Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.)

Subclass of:

320 - Electricity: battery or capacitor charging or discharging

320127000 - BATTERY OR CELL DISCHARGING

320128000 - With charging

Patent class list (only not empty are listed)

Deeper subclasses:

Entries
DocumentTitleDate
20090218988METHOD AND APPARATUS FOR PROVIDING SUPPLEMENTAL POWER TO AN ENGINE - A method and apparatus provides supplemental power to an engine. The method and apparatus includes a pair of conductive leads for connecting the supplemental power to an engine electrical system, a battery, a relay connected to the conductive leads, a shunt cable connecting the battery to the relay and a processor for controlling the relay to selectively apply electrical power to the engine electrical system. The method and apparatus includes safety features to reduce the risk of injury to the operator and damage to the apparatus and/or engine electrical system.09-03-2009
20130026997BATTERY PACK - In a battery pack, an overcharge detecting circuit compares a voltage between a positive electrode and a negative electrode of a secondary battery with a threshold voltage to detect an overcharge of the secondary battery, and turns off a switching element. A series circuit including a thermistor and a resistor is arranged near the secondary battery and connected in parallel to the secondary battery. A comparator compares a voltage at a junction point of the thermistor and the resistor with a reference voltage corresponding to a predetermined temperature. In response to an output signal of the comparator, a changing unit changes the threshold voltage to a first value when a temperature of the secondary battery is below the predetermined temperature, and changes the threshold voltage to a second smaller value when the temperature of the secondary battery is above the predetermined temperature.01-31-2013
20130026996CHARGE/DISCHARGE CONTROL METHOD FOR ALKALINE STORAGE BATTERY, AND POWER SUPPLY SYSTEM - A charge/discharge control method for an alkaline storage battery (01-31-2013
20090195210BATTERY TEMPERATURE REGULATOR WITH SUITABLE ARRANGEMENT OF TEMPERATURE SENSOR - A temperature regulator is provided for a battery which includes an electrode body, a terminal electrically connected to the electrode body, and a casing that receives the electrode body and supports the terminal with an end portion of the terminal protruding outside of the casing. The casing is electrically and thermally insulated from the terminal. The temperature regulator includes a flow producer, a temperature sensor, and a controller. The flow producer produces a flow of a heat transfer medium for exchanging heat between the heat transfer medium and one of the terminal and casing. The temperature sensor senses the temperature of the other of the terminal and casing. The controller controls, based on the temperature sensed by the temperature sensor, the flow producer to adjust the flow rate of the heat transfer medium, thereby regulating the temperature of the electrode body to fall within a predetermined range.08-06-2009
20090195209Radiation conversion device - A radiation conversion device, which is driven by an on-board battery, detects radiation that has passed through a subject and converts the radiation into image information. The radiation conversion device includes a battery residual charge amount detector for detecting a residual charge amount of the battery, a transmission rate setting unit for setting a transmission rate of the image information corresponding to the residual charge amount of the battery, and a transmitting unit for transmitting the image information to an external apparatus by means of wireless communications at the set transmission rate.08-06-2009
20100141213POWER SUPPLY APPARATUS FOR VEHICLE - A power supply apparatus for a vehicle includes first and second batteries provided electrically in parallel to main loads, a boost converter provided between the first battery and the main loads, a boost converter provided between the second battery and the main loads, an auxiliary battery, a DC/DC converter, and an auxiliary load driven by power from the auxiliary battery or DC/DC converter. The controller determines charging currents or discharging currents for the batteries reflecting variations in a current flowing through the auxiliary load. Accordingly, a power supply apparatus for a vehicle can thus be provided in which imbalance between charging/discharging currents for a plurality of power storage devices is reduced.06-10-2010
20130026995BATTERY PROTECTION IC AND BATTERY DEVICE - Provided are a battery protection IC and a battery device, which are capable of ensuring safety even when a charger is connected in a reverse direction. The battery protection IC includes a first switch element provided between an overcurrent detection terminal and a VDD terminal so that, when the charger is connected with reverse polarity, the first switch element interrupts a current path between the overcurrent detection terminal and the VDD terminal. The battery protection IC further includes a second switch element provided between a charge control terminal and the VDD terminal so that, when the charger is connected with reverse polarity, the second switch element interrupts a current path between the charge control terminal and the VDD terminal.01-31-2013
20130026994BATTERY CELL MONITORING CIRCUIT, BATTERY CELL MODULE, AUTOMOBILE WITH BATTERY CELL MODULE - According to one embodiment, a battery cell monitoring circuit detects an abnormity in the cell balancing and terminals of each battery cell. One end of the first switch is connected to the first cell balancing terminal, and the other end of the first switch is connected to the second cell balancing terminal, so that the first switch is turned on/off based on a first control signal to perform cell balancing. The current source and the second switch are arranged in parallel with the first switch, and are connected in series between the one end and the other end of the first switch. The current source supplies a current. The second switch is turned on/off based on a second control signal. The first detection unit receives a first cell voltage measuring terminal voltage and a first cell balancing terminal voltage, and detects a terminal open state. The second detection unit receives a second cell voltage measuring terminal voltage and a second cell balancing terminal voltage, and detects a terminal open state.01-31-2013
20080258686Method for Detecting Removal of a Battery from a Battery Charger - A method for detecting removal of a battery from a battery charger includes 1) incrementing an event counter and resetting an interval counter each time the voltage present at the output node exceeds a predetermined voltage; 2) resetting the event counter each time the interval counter exceeds a predetermined maximum time between events; and 3) asserting a signal indicating the absence of a battery connected between the positive and negative output nodes each time event counter exceeds a predetermined number of events.10-23-2008
20110193530RECHARGEABLE BATTERY PACK - A battery pack comprising a power cell for providing power to a load or for receiving a charge from a charger, a first protection circuit for protecting from overvoltage and/or overcurrent conditions, and a second protection circuit for protecting from overtemperature conditions. The protection circuits independently control one or more electronic switching devices, through which passes substantially all of the current supplied by the power cell. When overvoltage and/or overcurrent conditions exist, the first protection circuit causes at least one of the switching devices to move to a non-conducting condition. Similarly, when an overtemperature condition exists, the second protection circuit causes at least one of the switching devices to move to a non-conducting condition.08-11-2011
20110193529Lithium-Ion Secondary Battery System - A lithium-ion secondary battery system is provided which can improve the cycle life and the storage property of a lithium-ion secondary battery and can decrease a discharge capacity which cannot be recharged. The lithium-ion secondary battery system includes a lithium-ion secondary battery having a cathode, an anode including carbon, and a non-aqueous electrolyte; a charge/discharge circuit for putting the lithium-ion secondary battery on charge according to a charge control parameter; and an arithmetic processing section for controlling the charge/discharge circuit. The arithmetic processing section obtains battery characteristics of the lithium-ion secondary battery, changes a value of the charge control parameter when the arithmetic processing section determines that the battery characteristics satisfies a condition for changing the charge control parameter, and restores the value of the charge control parameter to the value before the change when the charge for the lithium-ion secondary battery is finished.08-11-2011
20110193528 BATTERY MANAGEMENT - Apparatus and method for battery calibration and state of charge determination(SoC) within battery packs by detecting charge levels in a cell or cells, sending the charge level information to a controller which controls the movement of charge in the battery wherein, the controller initiates the discharge of a sub-unit to a predetermined level into the other sub-units and the charging of said sub-unit in the battery to a predetermined level from the charge held on the other sub-units to improve the accuracy and reliability of battery calibration and provide an accurate State of Charge indication from battery first use to end of life.08-11-2011
20120176097METHOD FOR CHARGING/DISCHARGING POSITIVE ELECTRODE ACTIVE MATERIAL IN A LITHIUM SECONDARY BATTERY, CHARGING/DISCHARGING SYSTEM PROVIDED WITH LITHIUM SECONDARY BATTERY AND VEHICLE, ELECTRONIC DEVICE, BATTERY MODULE, BATTERY PACK - In a charge/discharge method for a positive-electrode active material in a lithium secondary battery, the lithium secondary battery includes a positive electrode containing a positive-electrode active material capable of occluding and releasing lithium ions, a negative electrode containing a negative-electrode active material capable of occluding and releasing lithium ions, a separator located between the positive electrode and the negative electrode, and an electrolyte having a lithium ion conductivity; and the positive-electrode active material contains a nickel-type lithium-containing complex oxide. The positive electrode, which has been charged, is discharged until having a first potential VDp07-12-2012
20120176095ELECTRIC POWER MANAGEMENT SYSTEM - An electric power management system is provided which executes charge and discharge control by detecting a state of charge of a storage battery pack with a high precision and controls charging and discharging of a storage battery system comprising a plurality of storage battery units. A total storage battery unit manager calculates an SOC of all storage battery packs in the storage battery system, and controls charging and discharging based on the calculated SOC. When a wait state, where the storage battery system is not charging or discharging, continues for a predetermined period, the SOC is calculated using a correlation relationship between an electromotive force and the SOC, to remove the influence of hysteresis.07-12-2012
20090140696Apparatus and method for correcting residual capacity measurement of battery pack - A device and method of calibrating a residual capacity measurement for a battery pack uses the charging and discharging mechanism to reset the capacity to zero every time when the battery pack is completely discharged, so as to precisely measure and display the real capacity. The device includes a battery pack and a battery protection unit electrically connected to the battery pack. The battery protection unit resets the minimal capacity when the battery pack is completely discharged. The device further includes a charging switch used to control the timing of the charging unit to charge the battery pack; a discharging switch used to control the timing of the discharging unit to discharge the battery pack; a microcontroller used to detect whether the device is connected to the charging unit and capacity messages are generated; and a discharging switch used to control the battery pack to be completely discharged.06-04-2009
20100072950ASSEMBLED BATTERY SYSTEM - In an assembled battery system, parallel battery blocks are connected in series. Each of the battery blocks includes battery unit modules connected in parallel, and each of the modules includes a battery unit and a fuse connected in series. The battery block is provided with a common connection line connected to a fuse monitoring module, and MOS-FETs each having a gate, source and drain, wherein the fuse is connected between the gate and source, and the drain is connected to the connection line. The FET is turned on and a voltage is applied to the connection line through the FET from the battery unit, when the fuse is blown out. Thus, the fuse monitoring module can detects the blowout of the fuse, and a control module can turn off a control switch to stop charging/discharging of the assembled battery in accordance with the control signal from the fuse monitoring module.03-25-2010
20100072949Charging/Discharging Control Unit for Lithium Secondary Battery - In a charging/discharging unit provided with: a lithium secondary battery, a voltage detecting sensor for detecting a voltage and a current detecting sensor; the charging/discharging control unit is further provided with a controller, and a discharging element for performing a constant voltage discharging operation of 3 V. A voltage, V03-25-2010
20100072947Multi-Cell Battery Pack Charge Balance Circuit - A multi-cell battery pack charge balance circuit is connected to a recharge-discharge circuit to charge battery cells. The charge balance circuit includes a first balance circuit, a second balance circuit and a protection circuit. The first balance circuit is connected to a first node of the recharge-discharge circuit. The first balance circuit includes a plurality of controlling units, each of the controlling units includes a switch element and a resistor element connected with the switch element. The second balance circuit is connected to a second node of the recharge-discharge circuit and the first balance circuit. The second balance circuit has a first and second branch. The first branch includes a switch element. The second branch includes a switch element and a resistor element connected with each other. The protection circuit has a plurality of controlling points. The controlling points connect with the corresponding switch elements of the first and second balance circuits.03-25-2010
20100072948CHARACTERISTIC TRACKING METHOD AND CIRCUIT FOR A BATTERY MODULE - A characteristic tracking method for a battery module including at least one battery is disclosed. A look-up table is provided according to a primary characteristic of the battery. It is determined whether a battery has satisfied a preset condition when the battery module is operated from a usage state to an idling state. The battery is measured to have obtained a first voltage and a real capacity when the battery satisfies the preset condition. The measured first voltage is utilized to locate a table capacity of the battery from the look-up table. The look-up table is updated according to the real capacity and the table capacity. A peripheral circuit of characteristic tracking method has been exhibited.03-25-2010
20130207612BATTERY MODULE WITH A FLEXIBLE BUS - A battery module includes a plurality of battery cells and a flexible bus. Each of the battery cells has a main body, a first terminal disposed on the main body, and a second terminal disposed on the main body. The main body includes active material configured to generate power from an electrochemical reaction. The bus includes an electrical current harness configured to conduct an electrical current through the battery module and a battery management system configured to detect and transmit status information, as well as selectively control a charging and a discharging of at least one of the battery cells.08-15-2013
20130076311System for Actively Managing Energy Banks During Energy Transfer and Related Method - According to one embodiment, a system for actively managing energy banks during an energy transfer process comprises a plurality of energy banks configured for use as a group of energy banks and characterized by a desired state-of-charge (SOC), and a power management system coupled across each of the energy banks. The power management system is configured to selectively drive at least one of the energy banks to a modified SOC different from the desired SOC without interrupting the energy transfer process. In one embodiment, the power management system is further configured to return the energy bank or banks driven to the modified SOC to the desired SOC of the group of energy banks.03-28-2013
20130033233BATTERY PACK FOR ELECTRIC POWER TOOL, CONTROL CIRCUIT, AND PROGRAM - A battery pack for electric power tool is provided with a battery and a control circuit. The circuit includes a condition satisfaction determination unit, a continua lion satisfaction determination unit, and a sleep-mode transition unit. The condition satisfaction determination unit determines whether each of at least one predetermined sleep-mode transition condition is satisfied, and determines whether an all-condition satisfaction state is present, which is a state wherein all of the at least one sleep-mode transition condition are satisfied. The continuation satisfaction determination unit determines whether the all-condition satisfaction state has continued for a predetermined. period of time when the condition satisfaction determination unit determines that the all-condition satisfaction state is present, The transition unit stops part of operation of the circuit to shift the circuit to a sleep mode when the continuation satisfaction determination. unit determines that the all-condition satisfaction state has continued for the predetermined period of time.02-07-2013
20130038294BATTERY PACK - A battery pack is constructed with a rechargeable battery, a protection circuit part that protects the battery when the battery is charged and discharged, and a switching unit that turns on or off a power source of the protection circuit part. Also, the battery pack may be constructed with a rechargeable battery, a protection circuit part that protects the battery when the battery is charged and discharged, and electric wiring lines constructed so that the power source of the protection circuit part may be turned on and off. When the battery pack is not connected to a charger or a load by the switching unit or the electric wire lines, the power source of the circuit is blocked to prevent the battery pack from being shorted and to reduce the idle power. When the battery pack is connected to the charger or the load, the power source is applied to the circuit so that the circuit operates.02-14-2013
20130038293Cell Monitoring And Balancing - A method for monitoring the voltage of each of a plurality of cells of a battery pack is provided. The method may include monitoring a voltage potential for each of a plurality of cells in a battery pack utilizing a single channel of battery control unit within the battery pack. If, during discharge of the battery, e.g., the battery is being used to power a hand tool, the voltage potential of any cell is determined by the battery control unit to be below a predetermined minimum voltage, the battery control unit discontinues a current flow from battery pack to the tool.02-14-2013
20130038292MANAGEMENT OF BATTERY CHARGING THROUGH COULOMB COUNTING - A battery charge management method and device operable to perform that method. The battery charge management method comprises the steps of determining charge delivered to or from a battery based on Coulomb counting and updating an estimated battery state of charge based on the amount of delivered charge and measuring the battery current. Then comparing the updated estimated battery state of charge with a predetermined state of charge value of less than 100%, such that each predetermined state of charge value being associated with an expected battery current for that predetermined state of charge value. The method also includes modifying the updated estimated battery state of charge when the updated estimated state of charge is greater than the predetermined state of charge value and the measured battery current is greater than the expected battery current associated with the predetermined state of charge.02-14-2013
20090160403BATTERY TESTING DEVICE AND BATTERY TESTING METHOD - The present invention applies load to a portable telephone by charging and discharging a secondary battery conforming to the actual way of use of the portable telephone, so that the performance of the secondary battery in a portable telephone connected for charging can be accurately tested. A battery testing device of the present invention has: a charge control circuit for controlling input power which is input to a lithium ion battery via an AC adapter; and a radio circuit for controlling output power which is output from the lithium ion battery and discharging the lithium ion battery, wherein when the lithium ion battery reaches a fully charged state, the radio circuit starts discharging while the charge control circuit stops charge of the lithium ion battery using the AC adapter, and when the lithium ion battery reaches a predetermined charged state, the charge control circuit starts charge of the lithium ion battery using the AC adapter while the radio circuit stops discharge of the lithium ion battery.06-25-2009
20100109611ELECTRIC FACILITY OPERATING ACCORDING TO GALVANIC PRINCIPLES, SUCH AS A LITHIUM-ION CELL, COMPRISING A CONTROL FOR THE OPERATING CONDITIONS - A facility which operates according to galvanic principles, such as in particular a lithium-ion accumulator, and a method for monitoring and controlling an electric operating condition of the facility. The facility comprises at least one galvanic cell and an operating management system for monitoring and controlling the electric operating condition of the facility and for monitoring a representative temperature of the facility. The operating management system is designed to control the electric operating condition of the facility as a function of the temperature. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.05-06-2010
20130082662CIRCUITS, DEVICES, METHODS AND SYSTEMS TO SECURE POWER-UP FOR BATTERY OPERATING DEVICES EVEN WITH LOW CURRENT CHARGERS AND TO EXECUTE OTHER PERFORMANCES - An electronic power control circuit includes a power conditioner circuit (04-04-2013
20130082661Mobile Power Systems for High Power Applications - Some embodiments relate to a mobile power system. The system includes a first battery module including a number of rechargeable cells. A first battery module current limiter is configured to monitor a current flowing to or from the plurality of rechargeable cells of the first battery module. The battery module current limiter is further configured to selectively limit the current flowing to a non-zero current that is less than a predetermined current threshold, wherein the selectively limiting is based on whether the monitored current is approaching the predetermined current threshold.04-04-2013
20130082660BATTERY LIFECYCLE MANAGEMENT OF A DUAL BATTERY HANDSET - Portable electronic devices, systems and methods are provided for managing battery usage of a dual-battery handset including a embedded battery and for receiving a replaceable battery operatively connected to the embedded battery. An embedded battery of a portable electronic device is monitored and in response to detection of a battery deterioration event, controlling a discharge rate of the embedded battery and a discharge rate of the replaceable battery.04-04-2013
20100007310BATTERY PACK, INFORMATION PROCESSING APPARATUS, CHARGE CONTROL SYSTEM, CHARGE CONTROL METHOD BY BATTERY PACK, AND CHARGE CONTROL METHOD BY CHARGE CONTROL SYSTEM - A battery pack includes: an obtaining unit for obtaining computation information for calculating a charge current including temperature information of a battery; a computation unit for computing a charge current for the battery based on the computation information; and a notification unit for notifying a computer of the charge current computed by the computation unit. The notification unit uses a dedicated command to notify the computer of the charge current. The battery pack includes: a storage unit for storing therein a first threshold value and a second threshold value relating to the temperature information, and the computation unit may compute the optimal charge current depending on which of ranges divided by the first threshold value and the second threshold value the temperature information belongs to.01-14-2010
20090134843METHOD AND APPARATUS FOR DETECTING INTERNAL ELECTRIC STATE OF IN-VEHICLE SECONDARY BATTERY - In a proposed apparatus and method, constant-voltage charge is performed with an in-vehicle secondary battery immediately after start of a vehicle or during running of the vehicle. A quantity relevant to polarization caused in the battery immediately after start of the constant-voltage charge is calculated using data of the charge current. It is determined whether or not a change rate of the calculated polarization-relevant quantity is less than a given threshold. When the change rate is less than the given threshold, a plurality of data of the charge current sampled and held during a predetermined period of time are acquired. A value of the charge current to be accumulated until the charge current reaches a given final value is calculated using the plurality of data of the charge current. The internal electric state of the battery is estimated based on the accumulated value of the charge current.05-28-2009
20100026244POWER SOURCE SYSTEM, POWER SUPPLY CONTROL METHOD FOR THE POWER SOURCE SYSTEM, POWER SUPPLY CONTROL PROGRAM FOR THE POWER SOURCE SYSTEM, AND COMPUTER-READABLE RECORDING MEDIUM WITH THE POWER SUPPLY CONTROL PROGRAM RECORDED THEREON - The present invention provides a power source system that increases the power supply capacity of a power source device and continuously supplies the power necessary for a load device when a power source device stops. A control unit has a state quantity setting unit that sets a first target state quantity indicating a state of charge of the power storage device that is to be a target value when charge and discharge of the power storage device are controlled. When the power source device stops, the state quantity setting unit can change the first target state quantity to a second target state quantity that is to be a target value exceeding the first target state quantity and can increase the target state quantity of the power storage device. As a result, when the power source device stops, charge and discharge of the power storage device are controlled on the basis of the target state quantity exceeding that during the operation of the power source device. Therefore, the state of charge of the power storage device can be improved over that during the operation of the power source device. As a result, the power supply capacity of the power source device can be increased and the power necessary for the load device can be continuously supplied, in place of the power source device.02-04-2010
20100066307PROTECTION CIRCUIT MODULE AND SECONDARY BATTERY INCLUDING THE PROTECTION CIRCUIT MODULE - A protection circuit module (PCM) for a secondary battery including a bare cell is provided. The PCM includes: a flexible printed circuit board (FPCB); and control circuitry mounted on the FPCB via adhesive material and configured for electrical coupling to the bare cell through the FPCB. The control circuitry is adapted to control charging and discharging of the bare cell.03-18-2010
20090045777Intelligent Battery Module for Multimedia Device - An intelligent battery module for a multimedia device includes a device housing, a battery unit and an intelligent circuit arrangement. The intelligent circuit arrangement is provided within the device housing for electrically communicating a multimedia battery and the battery unit with a battery terminal of the multimedia device, in such a manner that when the multimedia battery is mounted onto a battery slot, the intelligent circuit arrangement is adapted to electrically connect the multimedia battery with the battery terminal so as to allow the multimedia battery to initially activate the multimedia device, and when the multimedia device is initially activated by the multimedia battery, the intelligent circuit arrangement is arranged to electrically connect the battery unit with the battery terminal so as to allow the multimedia device to be continuously operated by the battery unit without electrically further recourse to electricity supply of the multimedia battery.02-19-2009
20100327812CHARGING SYSTEM AND METHOD FOR MANAGING ELECTRIC QUANTITY OF BATTERY - A method for managing electric quantity of a battery is disclosed. The method includes charging a battery normally with a 4.2V voltage when a temperature of the battery is lower than a first threshold temperature; charging the battery continuously when the temperature of the battery is higher than the first threshold temperature and lower than a second threshold temperature and the electric quantity of the battery is lower than a first threshold voltage. On the contrary, the battery is not charged any more when the temperature of the battery is between the first threshold temperature and the second threshold temperature and the electric quantity of the battery is higher than the first threshold voltage or a first capacity. If the temperature of the battery is higher than a second threshold temperature, the battery is not charged any more regardless of the battery voltage.12-30-2010
20130049696Series/parallel connection scheme for energy storage devices - A battery pack has series-parallel connected battery cells. An inrush current limiting circuit has current limiting devices and a current limiting tracking means limits inrush current from shorted battery cells. Each current limiting tracking means is coupled to the current limiting devices such that they limit an inrush current from parallel neighbor battery cells when one battery cell on the column shorts. The current limiting devices are variable buffer resistors with a positive temperature coefficient. The current limiting tracking means are heat sinks that thermally couples the buffer resistors together such that the buffer resistors increase in resistance with a temperature increase caused by current flowing through the buffer resistor associated with the shorted battery cell. Current regulating elements are in series with columns of battery cells for preventing inrush current to the columns of the battery cells.02-28-2013
20100060236Method for Determining the End-of-Discharge Threshold of a Rechargeable Battery - The method for determining the end-of-discharge voltage threshold of a rechargeable battery comprises discharging the battery up to a predefined end-of-discharge voltage threshold, at least partial charging of the battery, determining, during said charging, an electrical parameter representative of a coup de fouet effect on charging, comparing said parameter with a predetermined characteristic and updating, if necessary, the end-of-discharge voltage threshold to be used for subsequent discharging according to the result of said comparison.03-11-2010
20130088204METHOD AND SYSTEM FOR MAGNETIC FIELD PROBING FOR SEALED-ACID BATTERY DIAGNOSIS - A system and method for determining the health of a battery. A primary coil may be positioned along a first portion of a battery and a secondary coil may be positioned along a second portion of the battery. The primary coil may then be excited with a signal, and an electromagnetic field induced in the secondary coil by the excited primary coil may be measured. A state of health of the battery may thus correlate to the measured electromagnetic field during operation of the battery. This state of health may be determined as a function of electrolyte stratification, current profile, electrode structure, electrode surface degradation, and combinations thereof.04-11-2013
20130069598Lithium Ion Battery Control System and Assembled Battery Control System - A lithium ion battery control system includes a degradation rate calculating unit, a degradation rate storage unit, a degradation rate comparing unit, a charging and discharging control circuit, and a rechargeable battery. The degradation rate calculating unit calculates a degradation rate when receiving a trigger for starting the check of the degradation rate of the battery. The degradation rate comparing unit receives a present degradation rate from the degradation rate calculating unit and a previous degradation rate from the degradation rate storage unit and compares both degradation rates. As a result, when the present degradation rate is greater than the previous degradation rate by a predetermined value, a charging and discharging condition is limited.03-21-2013
20110006737BATTERY CHARGING METHOD AND APPARATUS - Disclosed are methods for charging batteries utilizing a charge balance approach, and charger systems using those methods. In one example, a method for charging a battery includes monitoring an amount of charge released by the battery while in a discharge state, recording the amount of charge released while in the discharge state, applying a voltage which results in current in reverse direction to the battery at a first voltage level for a time sufficient to introduce an amount of charge substantially equal to the recorded amount of charge released by the battery while in the discharge state, and maintaining the battery in a stand-by mode by applying a voltage which results in current in reverse direction to the battery at a second voltage level, the second voltage level being in a range sufficient to prevent self-discharge of the battery and insufficient to induce evaporation of electrolyte in the battery.01-13-2011
20130057222HYBRID BATTERY AND ITS CHARGING/DISCHARGING METHOD - A hybrid battery and its charging/discharging method automatically charges/discharges batteries having different capacities. The hybrid battery includes a plurality of rechargeable batteries; switching elements which are electrically connected to the plurality of rechargeable batteries having high current paths for electrically connecting to one of the high current paths; and a hybrid battery protection circuit electrically connected to the plurality of rechargeable batteries and driven by power supplied by one of the plurality of rechargeable batteries, the hybrid battery protection circuit charging/discharging the plurality of rechargeable batteries in sequence by transmitting an on/off signal to the switching element.03-07-2013
20130057221SEMICONDUCTOR INTEGRATED CIRCUIT, PROTECTION CIRCUIT AND BATTERY PACK - A semiconductor integrated circuit that protects a secondary battery by controlling an on/off status of a discharge control switch and a charge control switch includes an over discharge detection part configured to detect an over discharge condition based on a battery voltage of the secondary battery, a load removal detection part to detect whether a load connected to the secondary battery is removed based on a voltage of a load removal detection terminal connected to a negative electrode side of at least one of the load connected to the secondary battery and a battery charger through a resistor, an over discharge return part to return to a normal condition from the over discharge condition, and a control part to output a control signal for returning the over discharge condition to the normal condition to the over discharge return part upon detecting the load being removed in the over discharge condition.03-07-2013
20090091296BATTERY WITH CHARGE AND DISCHARGE MANAGEMENT - A method to manage charge and/or discharge of a rechargeable battery comprising at least one electrochemical cell having predetermined maximum continuous charge current (IMR_C) and/or discharge current (IMD_C) allowed, the method comprising the steps of: 04-09-2009
20090091297Battery voltage adjusting device - The battery voltage adjusting device includes: a voltage detecting means provided corresponding to a block including at least one unit cell of an on-vehicle high voltage battery consisting of a plurality of the unit cells connected in series and detecting a terminal voltage of the unit cell in the block; a charge-discharge means charging or discharging the unit cell in the block on the basis of the terminal voltage of the unit cell detected by the voltage detecting means; a temperature detecting means detecting a temperature of the unit cell; and a changing means changing a time period, from a time point when the charge-discharge means finishes to charge or discharge the unit cell to a time point when the voltage detecting means detects the terminal voltage of the unit cell, on the basis of the temperature of the unit cell detected by the temperature detecting means.04-09-2009
20090267567SYSTEMS AND METHODS FOR SUPPLYING POWER TO AN ELECTRONIC DEVICE - A method which supplies power to an electronic device from a power supply device. The method includes setting a minimum power level of a power supply battery of a power supply device, detecting a current power level of the power supply battery and determining a current supply of the power supply battery, determining if the current supply exceeds a preset minimum power level, setting a required power level for extracting power from the power supply battery, extracting the power from the power supply battery according to a preset required power level, and transferring the power to a power charging battery of the electronic device. A related system is also provided.10-29-2009
20130063095POWER SUPPLY DEVICE - Provided is a power supply device integrally combined with an electrical device body including a motor, comprising a rechargeable battery for supplying power to the motor, a microcomputer for detecting a residual capacity and a battery voltage of the battery, and a switching element provided between the battery and the microcomputer. The microcomputer stops charging the battery when the detected residual capacity has become 100%, and when the detected value of the battery voltage has become lower than a peak value after the value of the battery voltage passes the peak value, making it possible to prevent overcharging of the battery. The microcomputer also controls to turn off the switching element to stop the power supply from the battery to the microcomputer when the residual capacity becomes less than a predetermined threshold value, making it possible to reduce power consumption.03-14-2013
20130063096METHOD FOR CONTROLLING THE MAXIMUM CHARGE RATE OF AN ELECTROCHEMICAL ENERGY STORAGE DEVICE - A method for controlling the maximum charge rate during a charging process or discharging process of an electrochemical energy store device is generally characterised by current intensity. Said current intensity is dependent on the operating state of the electrochemical energy store device and on a group of boundary conditions. Said group typically comprises, for example, the temperature of at least one region of the electrochemical energy store device. The maximum charge rate may crucially depend on the mode of operation of the electrochemical energy store device, and therefore a distinction should be made in particular as to whether energy is being supplied to or withdrawn from said device. The electrochemical energy store device can heat up during charging or discharging processes, and therefore in particular the duration of the energy withdrawal and/or energy supply can influence the level of the current intensity which can be withdrawn and/or which can be supplied. The current intensity which can be withdrawn and/or supplied depends in particular upon the state of charge of the electrochemical energy store unit and is therefore controlled in particular on the basis of said state of charge. When in a critical temperature range, the electrochemical energy store cell is particularly difficult to control. Therefore, the current intensity which can be withdrawn or supplied is set to zero when a maximum temperature is reached and/or a minimum temperature is reached.03-14-2013
20130063094METHOD AND SYSTEM FOR USE WITH A VEHICLE BATTERY - A method and system for use with a vehicle battery pack having a number of individual battery cells, where the method estimates, extrapolates or otherwise determines individual cell resistances. According to an exemplary embodiment, the method and system use a voltage and temperature reading for each of the individual battery cells, as well as a voltage and current reading for the overall battery pack to determine one or more cell resistance values, such as a minimum and maximum cell resistance for the battery pack. This approach relies upon temperature deviations in the battery pack to make assumptions or estimates regarding individual battery cell resistances. By having individual cell resistance values—instead of using an overall pack resistance value and building in a buffer to account for cell variations—better and more accurate cell-level data can be obtained that, in turn, can improve charging, discharging, cell balancing and/or other battery-related processes.03-14-2013
20130063093Cold End Switch Battery Management Control Method - In one embodiment of the cold end switch battery management control method, a battery generates an output voltage at a positive terminal thereof. A first control voltage is also generated by an integrated circuit. A gate of a field effect transistor (FET) receives the first control voltage, wherein the FET comprises a drain and a source with the source coupled to a negative terminal of the battery. The FET transmits current towards the battery in response to the gate receiving the first control voltage, wherein the first control voltage is greater than the output voltage, and wherein the first control voltage is less than a breakdown voltage of the integrated circuit.03-14-2013
20090237033BATTERY DRIVING DEVICE, LOAD CONTROL METHOD, INTEGRATED CIRCUIT AND LOAD CONTROL PROGRAM - The present invention aims to provide a battery-driven device that is capable of extending an operating time of a battery (a secondary battery). A battery control unit 09-24-2009
20090085518Protective circuit board and battery pack using the same - A protective circuit board and a battery pack using the same, which includes a groove formed at one side and receives an external connection terminal in the groove, is provided. The protective circuit board for a battery, which is formed by mounting a number of electrical devices on a board on which a wiring pattern is formed and which is connected to a bare cell so as to protect a battery, comprises a groove formed on a surface of the protective circuit board, and an external connection terminal formed inside the groove.04-02-2009
20090009136RECHARGEABLE BATTERY WITH INTERNAL DISCHARGER - To shift a rechargeable battery into a lower load state that is ideal with regard to storage and aging, it is proposed that a Zener diode connected in series with a resistor and a switch. The rechargeable battery voltage, which corresponds to the predetermined, lower load state, is selected as the breakdown voltage of the Zener diode. On being started manually, the rechargeable battery is shifted to a lower load state, if the current load state is higher than the predetermined, lower load state. A digital version by means of a manually switched-on digital circuit is also proposed.01-08-2009
20130162217PROTECTIVE CIRCUIT FOR A RECHARGEABLE BATTERY PACK - The invention is directed to a protective circuit for a multiplicity of individual Cells arranged in a rechargeable battery pack, wherein a predefined number of individual cells forms a cell network. A monitoring circuit for the state of charge of the individual cells in the cell network is provided. Wherein the voltage at an individual cell is detected and the detected voltages of a plurality of individual cells are compared among one another to output a signal when an unbalancing limit is exceeded unbalancing limit indicates a permissible voltage difference between two selected individual cells of the cell network. The unbalancing limit of the cell network is provided as a characteristic curve variable over its state of charge. To alter the unbalancing limit, the characteristic curve is altered in dependence on a correction value.06-27-2013
20130162218APPARATUS AND METHOD FOR VARYING USABLE BAND RANGE OF BATTERY - The present invention discloses an apparatus and method for varying a usable band range of a battery. The apparatus for varying a usable band range of a battery according to the present invention comprises a sensor for measuring and outputting an electrical characteristic value of the battery; and a controller for calculating the amount of charged or discharged energy of the battery from the electrical characteristic value and varying a usable band range of the battery that is charged and discharged, to maintain the pre-established amount of usable energy depending on the degradation degree of the battery. In accordance with the present invention, a usable band range of a battery can be established depending on the degradation degree of the battery, thereby improving the life time thereof.06-27-2013
20110279088BATTERY PACK, DISCHARGE SYSTEM, CHARGE AND DISCHARGE SYSTEM, AND DISCHARGE CONTROL METHOD OF LITHIUM ION SECONDARY BATTERY - A battery pack includes at least a lithium ion secondary battery, a voltage sensor, and a control unit. The control unit controls discharge of the battery by a relatively high end-of-discharge voltage when the use frequency of the battery is relatively low during discharge of the battery. On the other hand, the control unit controls discharge of the battery by a relatively low end-of-discharge voltage when the use frequency of the battery is relatively high. Consequently, it is possible to prevent the utilizable capacity from decreasing more than a practical decrease in the capacity due to increase in the use frequency.11-17-2011
20110279087METHOD FOR AUTOMATIC BATTERY CONTROLLER IDENTIFICATION AND CELL INDEXING VIA A MULTI-PURPOSE SIGNAL LINE - A method and system for identifying individual cell monitoring controllers in an electric vehicle battery pack. Several cell monitoring controllers are serially connected to each other and to a master battery pack controller via a signal line, which is also used for communicating alarm signals between the controllers. The master battery pack controller sends a wake-up signal on the signal line. The first cell monitoring controller in the signal line wiring route receives the wake-up signal and receives an identification number from the master battery pack controller. Only then does the first cell monitoring controller allow the wake-up signal to be passed along to the second cell monitoring controller, which activates and receives its identification number, and so forth. In this way, identical cell monitoring controllers can be used in a battery pack, yet each cell monitoring controller can be uniquely identified by the master battery pack controller.11-17-2011
20110140670BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided are a battery state monitoring circuit and a battery device that are capable of reliably controlling charge by a charger even if a voltage of a secondary battery drops to around 0 V. The battery state monitoring circuit includes a minimum operating voltage monitoring circuit for detecting that the voltage of the secondary battery is lower than a minimum operating voltage of the battery state monitoring circuit. When the voltage of the secondary battery is lower than the minimum operating voltage of the battery state monitoring circuit, an output of an overdischarge detection circuit is set to an overdischarge detected state.06-16-2011
20110140668Method For Managing Power Limits For A Battery - A method for managing power limits for a battery includes the step of increasing a minimum operating state of charge after an initial power capability has decreased to the point where a predefined full discharge power is not available at an initial minimum operating state of charge. The increased minimum operating state of charge can be chosen such that the full discharge power is available. The increased minimum state of charge may not be chosen to provide the full discharge power if the increased minimum state of charge is greater than a maximum low limit state of charge.06-16-2011
20110140667Apparatus for Storing Power and Method of Controlling the Same - Provided are a power storage apparatus and a method of controlling the power storage apparatus. The power storage apparatus stores power supplied from a power generation system or a power grid. The power storage apparatus supplies stored power to a load during an electric failure, and supplies stored power to the power grid. The power storage apparatus includes at least one battery cell, a battery management unit coupled to the battery cell, a bi-directional converter coupled to the battery management unit, a bi-directional inverter coupled between the bi-directional converter and the power grid, and a central controller controlling the operations of the bi-directional converter, the bi-directional inverter, and the battery management unit. An uninterruptible power supply (UPS) function may be performed to stabilize the power storage system including the power storage apparatus.06-16-2011
20120112701TELECOMMUNICATION SYSTEM - What is provided is a telecommunication system including: a master unit; and05-10-2012
20120187914CONTROL METHOD OF BATTERY-SYSTEM FOR IMPROVING SAFETY - Disclosed herein are a method of controlling the operation of battery modules in a battery system, which includes two or more battery modules or battery module assemblies, wherein the battery system further includes energy consuming loads for consuming charged energy, and the method includes, when a specific battery module or a specific battery module assembly is abnormally operated, connecting the abnormally operated battery module or the abnormally operated battery module assembly to the corresponding energy consuming load to forcibly discharge the charged energy, and a battery system that is capable of performing the battery system control method.07-26-2012
20090309547CHARGING METHOD, BATTERY PACK AND CHARGER FOR BATTERY PACK - A charging method includes a constant-current charging step wherein a constant charge current is supplied to a secondary battery to be charged to a predetermined end voltage; and a constant-voltage charging step wherein the predetermined end voltage is maintained by reducing the charge current after said secondary battery is charged to the end voltage, wherein: said constant-current charging step includes the charging step to be carried out with the end voltage set to OCV which is a voltage when no current is flowing, and with a voltage of a charge terminal of said battery pack set to an overvoltage above said OCV, and said constant-voltage charging step includes the step of reducing the voltage across the charge terminals to the after the voltage across the charge terminals is increased to the overvoltage or after the charge current of the charge terminal is reduced to or below a predetermined current level.12-17-2009
20120032645BATTERY PACK FOR PRACTICAL LOW-POWER MODE CURRENT DETECTION AND METHOD OF DETECTING EXCESSIVE CURRENT - In a battery pack 02-09-2012
20120032643BATTERY PACK, CHARGING SYSTEM INCLUDING THE BATTERY PACK, AND METHOD OF CONTROLLING THE CHARGING SYSTEM - A battery pack, a charging system including the battery pack, and a method of controlling the charging system are disclosed. The battery pack includes a plurality of rechargeable battery cells and a protection circuit for protecting the battery cells. The protection circuit includes an analog front end (AFE) integrated circuit (IC) and a microcomputer. The AFE IC is for supplying an operating voltage of a microcomputer to the microcomputer and to a charging device. Thus, when the battery pack is charged, an abnormal operation of the AFE IC can be detected by the charging device and the charging of the battery pack stopped, thereby preventing an explosion of the battery pack.02-09-2012
20120013305CHARGING/DISCHARGING DEVICE WITH LOW RESISTANCE CONDUCTOR SANDWICHED BETWEEN ELECTRODE PLATES - The present invention relates to one or more electrode plates, which are installed with current collecting terminals at two or more sides thereof, sandwiching a low resistance conductor made of the material with conductivity better than that of the electrode plates; in which current collecting terminals are installed at two or more sides of the low resistance conductor, for connecting with the current collecting terminals installed at two or more sides of the electrode plates, and at least one of which are used to be the general current collecting terminal to output current to the external part or to receive the input current from the external part to constitute an electrode unit.01-19-2012
20120098497BATTERY CHARGE/DISCHARGE CONTROL APPARATUS - A battery charge/discharge control apparatus for a vehicle capable of driving an electric motor by a battery is provided. Temperature of the battery is detected, temperature history distribution of the battery after start of temperature detection is calculated, and a lifetime workload of the battery is calculated on the basis of this temperature history distribution of the battery. A permissible value of a workload increase rate indicating a workload to increase per unit distance is calculated on the basis of the lifetime workload of the battery and a travel distance of the vehicle. An actual workload increase rate of the battery is compared with the permissible value of the workload increase rate. In the case where the actual workload increase rate is larger than the permissible value of the workload increase rate, an output is restricted from the output of the battery restricted in a normal driving mode if necessary by a restricted value based upon a difference between the actual workload increase rate and the permissible value of the workload increase rate. This makes it possible to carry out lifetime prolonging control for the battery more accurately by setting up an appropriate charge/discharge permissible amount in accordance with temperature change of the battery in the past.04-26-2012
20090066293VOLTAGE COMPARISON CIRCUIT - A voltage comparison circuit makes a comparison between a first voltage and a second voltage. A resistor and a constant current source are provided in series between the first voltage and the ground voltage. A comparator receives the second voltage via one input terminal (non-inverting input terminal), and the voltage at a connection node between the aforementioned resistor and the constant current source via the other input terminal (inverting terminal). The first voltage is preferably used as the power supply voltage for the comparator.03-12-2009
20090160402Quick Conditioning Memory Backup Battery - A quick conditioning cycle system to avoid performance degradation at the end of calibrating cycle. The quick conditioning cycle system discharges a battery to a level where battery remaining capacity is still high enough to backup memory at a guaranteed period of time. During the quick learning cycle, the battery pack is discharged from a full charge. If measured capacity exceeds a predetermined threshold (Cpc), calibration stops. Otherwise, the quick conditioning cycle system reports a defected battery when measured capacity is less than Cpc and continues discharging to a full conditioning cycle, if desired.06-25-2009
20100033131PORTABLE DEVICE AND CONTROL METHOD THEREOF - Disclosed is a portable device which includes: a battery, a temperature determining unit which determines a temperature of the portable device, a temperature of the battery and a temperature of external air; a power unit which receives power from the battery and applies the power to the portable device; and a central processing unit which controls the power unit to cut off power to the portable device, based on at least one of the temperatures determined by the temperature determining unit, thereby preventing accidents when using the portable device.02-11-2010
20110215763SERIAL CHARGING AND DISCHARGING SYSTEM, AND METHOD OF DISCONNECTING CELL IN SERIAL CHARGING AND DISCHARGING SYSTEM - According to one embodiment, a serial charging and discharging system includes a cell connected in series to a power source for charging and discharging the cell, a diode provided upstream of the cell, a first switch connected in parallel to the diode, a second switch connected in series between the diode and the cell, a bypass circuit which bypasses the upstream of the diode and the downstream of the cell, a third switch connected to the bypass circuit; and a controller which controls the make and break of the first switch, the second switch, and the third switch.09-08-2011
20110215762RECHARGEABLE POWER SUPPLY SYSTEM ARRANGED BETWEEN EXTERNAL POWER SUPPLY AND LOAD - A power supply system includes a power storage module including first and second power storage units spaced by a predetermined distance from each other, and a power generating unit being capable of contacting with both of the first and second power storage units concurrently, and formed of a thermoelectric converting element; and a control unit for controlling charging and discharging of said first and second power storage units. In the first and second power storage units, different thermal reactions occur depending on whether charging or discharging operations is performed. The thermal reactions are a heat absorbing reaction and a heat generating reaction. The control unit renders one of the first and second power storage units dischargeable, and renders the other power storage unit chargeable.09-08-2011
20090189568ELECTRONIC SYSTEM FOR A BATTERY - An electronic system for a battery designed to supply electrical power to an application, such as in an aircraft, that includes a main power supply, comprises a charging circuit (07-30-2009
20120187912METHOD FOR USING A STAND-ALONE SYSTEM CONNECTED TO A BATTERY - A method for using a stand-alone system, provided with an actuator connected to a battery, comprises during a discharging phase of the battery at a predetermined current the measurement of a temperature representative of the battery temperature and the determination of a first voltage threshold depending upon the measured temperature. Then, a voltage is measured at the battery terminals. An operating mode, selected at least between a normal and deteriorated mode, is determined, said stand-alone system being in the normal operating mode when the measured voltage is higher than the first voltage threshold, and in the deteriorated operating mode when the measured voltage is lower that the first voltage threshold, the current provided by the battery during an actuation being reduced when going from the normal mode to the deteriorated mode.07-26-2012
20120187911OUTPUT CIRCUIT, TEMPERATURE SWITCH IC, AND BATTERY PACK - An output circuit has a smaller area and restrains outputs from becoming unstable even if a power supply voltage is lower than an operating voltage. A supply terminal of an inverter circuit is provided with switch circuit, and the switch circuit stops the operation of the inverter circuit when the power supply voltage is lower than the operating voltage of the circuit. Further, the output terminal of the inverter circuit is provided with a current source to fix the output to the power supply voltage when the operation of the inverter circuit is stopped.07-26-2012
20090212740On-board battery supervisor - An on-board battery supervisor that monitors the state-of-charge (SOC) of a lead-acid vehicle battery and automatically disconnects loads from the battery to prevent over-discharging of the battery, is disclosed. As the battery is being discharged, the on-board battery supervisor disconnects loads at an SOC level that leaves enough energy in the battery to reliably start the vehicle engine, while providing as much energy as possible to accessory loads. The loads are automatically reconnected as the battery is charged. Some preferred embodiments of the invention are designed specifically for use in watercraft and a dual output version of the invention simplifies the electrical system. All embodiments have circuit breaker outputs, high peak current capability, a low quiescent current drain and a dual timer that allows accurate determination of the SOC of the battery.08-27-2009
20080315837Remotely controlled multiple battery system - A remotely controllable multiple battery system for reliably supplying electrical energy to an electrical system, the remotely controllable multiple battery system receiving control signals from a remote control device, the remotely controllable multiple battery system having a remotely controlled controller. An at least one sensor that senses the condition of a main battery and an at least one controlled switching device coupled remotely to the controller and responding to a signal from the remote control device to the controller thereby switching from the main battery to an at least one auxiliary battery.12-25-2008
20080315836BATTERY CHARGE MANAGEMENT USING A SCHEDULING APPLICATION - According to some embodiments, battery charge management using a scheduling application is disclosed. A first parameter may be received from a scheduling application running on a mobile computing device having a battery pack. Based on at least the first parameter and battery pack data, a required charge percentage for the battery pack may be determined and the remaining capacity of the battery pack may be determined. If the remaining capacity of the battery pack is less than the required charge percentage, a charge termination voltage may be determined and the battery pack may be charged to the charge termination voltage.12-25-2008
20100085012SIGNAL FOR PRE-CHARGE SELECTION IN LITHIUM CHARGING AND DISCHARGE CONTROL/PRE-CHARGE FUNCTION - A rechargeable battery pack for a power tool can have a data terminal that provides a signal that is indicative of whether the voltage is below a threshold and can serve as both a pre-charge signal for a charger and as a stop-discharge signal for a power tool. A charger can include a power supply circuit and a voltage detection circuit. A charger control module can receive a signal indicative of the voltage of the battery pack and determine a pre-charge time based on the voltage and can monitor a change in the voltage of the battery pack during the pre-charge operation and stop the pre-charge operation based on the change in voltage and the time period.04-08-2010
20100085014BATTERY UNIT, BATTERY SYSTEM, ELECTRONIC DEVICE, CHARGING CONTROL METHOD OF BATTERY, AND DISCHARGING CONTROL METHOD OF BATTERY - A battery unit includes: a battery having cell units connected in parallel, in which one or a plurality of battery cells is connected in series; an external terminal provided for the battery; a switching element provided between each internal terminal and the external terminal of the cell unit; a protection circuit monitoring whether or not a fault occurs in each of the plurality of cell units and cutting off, through the switching element, a connection between the internal terminal and the external terminal of the cell unit with the fault detected; and an informing signal output terminal notifying an external device that the connection with the external terminal with respect to at least one of the cell units is cut off.04-08-2010
20110062918Method and device for monitoring the operating state of a battery - In a method for monitoring the operating state of a battery, preferably a Ni metal hydride or a Li-ion battery, formed of consisting of one or several interconnected battery cells, during the charging and discharging of the battery a low-frequency alternating current signal or voltage signal is applied to the battery. The resulting voltage or current signal is measured and the operating state of the battery or its battery cells is determined from at least one change in the harmonic distortion content of the measured voltage or current signal.03-17-2011
20110148360ENERGY STORAGE SYSTEM AND METHOD OF CONTROLLING THE SAME - A grid-connected energy storage system and a method of controlling the same are disclosed. The energy storage system operates in accordance with a priority order of loads for utilization of power stored in a battery at improved efficiency even in case of an abnormal operation of a grid.06-23-2011
20100085015BATTERY SYSTEM, VEHICLE, AND BATTERY MOUNTED DEVICE - A battery system (SV04-08-2010
20100079112Battery controller, battery control method, and battery - A battery controller includes: a temperature detecting section including at least one temperature detecting element whose resistance changes with changes in the temperature of a battery cell and/or a charge/discharge control switch connecting the cell with an external apparatus; first and second voltage divider circuits respectively including first and second resistive elements connected with the temperature detecting element; and a control section applying a reference voltage to the first or second voltage divider circuit while switching it such that the value of a voltage applied to the temperature detecting element according to a voltage dividing ratio between the resistive element and the voltage divider circuit changes proportionally to the temperature of the cell and/or the switch, and controlling the switch such that the external apparatus is connected to the cell when the temperature of the cell and/or the switch detected based on a voltage division output of the voltage divider circuit is between first and second temperatures.04-01-2010
20100079111METHOD AND APPARATUS FOR CHARGE DISCHARGE POWER CONTROL - Limit values of battery charging and discharging power are set by a battery charge discharge control apparatus, based on the estimation of the internal resistance of a battery according to a detected battery temperature and the sampling of a battery current and a battery voltage respectively detected by a current sensor and a voltage sensor. The limit values are used to control the battery current and the battery voltage to be within a current use range and a voltage use range of the battery, according to conditions of the battery in a vehicle.04-01-2010
20090206794LINEARLY REGULATED BATTERY CHARGER - A battery charger for an electronic device receives current limited power from an external power source, such as a Universal Serial Bus power interface. The battery charger can linearly regulate a charging current to an internal battery and limit the charging current so as not to demand current in excess of what the external power source can provide. A bi-directional pass element coupled between a system power terminal and the internal battery controls the charging current and effectively isolates the internal battery from a system load during charging of the battery while providing a low impedance path from the internal battery to the system load during discharging of the battery.08-20-2009
20100090652Battery Pack Having Protection Circuit for Secondary Battery - A battery pack has first through third external terminals connected to positive and negative power supply terminals and a voltage detection terminal, respectively. A secondary battery is connected between the first external terminal and the third external terminal. A protection circuit controls ON/OFF of first and second switching elements provided on a wiring between the secondary battery and a load or a charge device by detecting an overcharge, an overdischarge and an overcurrent of the secondary battery. A first thermistor is connected between the second external terminal and the third external terminal. A series circuit containing a second thermistor and a resistor is provided in parallel to the secondary battery. A third switching element is connected between the second external terminal and the third external terminal. The protection circuit turns on the third switching element and short-circuits between the second external terminal and the third external terminal when a detection is made by the second thermistor that a temperature of the secondary battery exceeds a predetermined temperature.04-15-2010
20110169457BATTERY PACK - Provided is a battery pack capable of implementing temperature protection with ease. Regardless of whether or not a battery protection IC (07-14-2011
20090256525Power storage apparatus - A power storage apparatus mounted with a plurality of connected power storage modules and capable of charging or discharging an electric power, and in which a housing is partitioned by a partition plate to be divided into a power storage area and a control device area; in the power storage area, an opening is formed, and the power storage modules are contained; in the control device area, an opening is formed, and a switching protective device section to switch and protect the power storage modules is contained; a main circuit wiring from the power storage modules is led out of the control device area via the switching protective device section; the opening of the power storage area is covered with a detachable cover; and the opening of the control device area is covered with a detachable cover independent of the cover of the opening of the power storage area.10-15-2009
20110169458BATTERY PACK - Provided is a battery pack capable of reducing the number of terminals of a battery protection IC. When a battery (07-14-2011
20110169456SWITCH EMBEDDED INTEGRATED CIRCUIT AND METHOD FOR BATTERY PROTECTION - A switch embedded integrated circuit for battery protection includes a MOSFET having a body diode, and a control logic circuit for switching the MOSFET and the direction of the body diode to control the charge current to and the discharge current from a battery. The control logic circuit turns off the MOSFET once any abnormal operation such as over-voltage and under-voltage happens, and turns on the MOSFET according to an OVPR threshold, an OVPR delay time, an UVPR threshold and an UVPR delay time. The OVPR threshold and the OVPR delay time are determined depending on the battery being coupled to a load or a charger, or floating.07-14-2011
20080211459BATTERY MANAGEMENT SYSTEM AND DRIVING METHOD THEREOF - A battery management system is provided for managing a battery that supplies power to a vehicle. The battery includes a plurality of cells. The battery management system includes a sensing unit for measuring a voltage of each of the plurality of cells. The battery management system detects at least one first cell among the plurality of cells that needs to be balanced according to the measured voltage of each of the plurality of cells. In addition, the battery management system performs a cell balancing operation on said at least one first cell by using different methods according to a driving state of the vehicle.09-04-2008
20090115371System and method for battery control of hybrid locomotives - A system and method are provided for battery control of hybrid vehicles such as, but not limited to, hybrid locomotives. The system and method are implemented to sense a present state of charge (SoC) of one or more batteries and generate present SoC data there from, sense a present excursion defined by a relationship represented as maximum SoC−minimum SoC for a desired cycle and generate present excursion data there from, and control the one or more battery power/current charging limits in response to the present SoC data and the present excursion data.05-07-2009
20090315519CONTROL DEVICE FOR A SECONDARY BATTERY AND VEHICLE - A control device for a secondary battery includes an offset addition unit (12-24-2009
20090278500AUTOMOTIVE POWER SUPPLY SYSTEM AND METHOD OF OPERATING SAME - A battery control module monitors discharge voltages associated with a traction battery of an automotive vehicle. The battery control module cycles the traction battery at a discharge-voltage dependent charge/discharge profile to generate heat within the traction battery.11-12-2009
20090278501Smart battery protector with impedance compensation - A battery protector with internal impedance compensation comprises: a logic circuit and delay module, an overcharge comparator, and an over-discharge comparator. The overcharge comparator has a positive terminal connected with a first adjustable reference signal and the over-discharge comparator has a negative terminal connected with a second adjustable reference signal and both of the other terminals of comparator are fed by the same partial voltage of the same voltage divider, which has two terminals, respectively, connected with the two electrodes of the battery. The first adjustable reference signal and the second adjustable reference are varied with the charging current or discharging current and the internal impedance of the battery.11-12-2009
20090284225INFORMATION PROCESSING EQUIPMENT AND THE INTEGRATED CIRCUIT - Information processing equipment is provided that can be operated continuously and stably for a long time due to improved stability during alternately switching between the batteries being used and, therefore, can maintain the reliability of the operation of switching the batteries being used over a long period. The information processing equipment includes battery housing portions configured to individually house a plurality of batteries; battery lids that are provided corresponding respectively to the plurality of batteries, that are opened and closed independently during attachment or removal of the batteries, and that are provided with magnets serving as magnetic-field-generating portions; magnetic-field-detecting elements that detect the strength of a magnetic field from the magnetic-field-generating portions; and a control microcomputer that controls a power-drawing portion based on a detection result obtained by the magnetic-field-detecting elements so as to change the switch.11-19-2009
20090289600Motor-driven vehicle with electric generation capability - A motor-driven vehicle includes a driving system and a power supplying system. The driving system includes a motor for driving rotation of a wheel unit, and a generator for generating electric power in response to a mechanical rotary power output outputted by the motor. A control unit of the power supplying system provides electric power from one of first and second rechargeable batteries to the motor, and charges the other one of the first and second rechargeable batteries with the electric power from the generator. The control unit provides electric power from the other one of the first and second rechargeable batteries to the motor, and charges said one of the first and second rechargeable batteries upon detecting that residual power of said one of the first and second rechargeable batteries detected by a detector is less than a predetermined value.11-26-2009
20090295336Individual-Charge and Merged-Discharge Battery Set - A battery set composed of multiple cells is assembled in a way of individual-charge/merged-discharge. The battery set assembled in the way of the present invention can achieve the highest charge efficiency and maintain balance among multiple cells such that the whole battery set has the largest discharge capacity, and the operating life of the battery set is prolonged. The terminal of the charge tip of the battery set assembled in the way of the present invention is a multi-pin charge terminal.12-03-2009
20090295335BATTERY PACK AND CHARGING METHOD FOR THE SAME - A battery pack and charging method for the same are disclosed. The battery pack automatically regulates the full-charge voltage of a battery according to the temperature of the battery. The battery pack includes: a battery being rechargeable and having a positive electrode and negative electrode; a switching module having a charge switching device and discharge switching device electrically connected to a high-current path of the battery; and a battery management unit electrically connected to the switching module to control the charge switching device and discharge switching device, and changing a full-charge voltage of the battery according to temperature of the battery.12-03-2009
20090295334Battery pack and charging method for the same - A battery pack includes a battery including a positive electrode and a negative electrode, a switching module including a charge switching device and a discharge switching device, the charge switching device and discharge switching device being electrically connected to a high current path of the battery, a battery management unit (BMU) electrically connected to the switching module, the BMU being configured to adjust a limit value for a charging current supplied by the charge switching device and to set a magnitude of the charging current supplied by the charge switching device to be equal to or less than the adjusted.12-03-2009
20090295333METHOD OF DETERMINING STATE OF CHARGE OF BATTERY OF VEHICLE - The State Of Charge (SOC) of a battery of a vehicle is determined using the value of current input to the battery through a generator and the value of current output from the battery to a vehicle side. When the voltage of the battery is increased by a predetermined level or higher for a predetermined time period but the battery is not in the state of being charged through the generator, it is determined as an externally charged state attributable to an external charging device. The value of a charging current flowing through the battery is obtained during the externally charged state, and the SOC of the battery is compensated based on the value of the charging current.12-03-2009
20090261785METHOD FOR MANAGING A MODULAR POWER SOURCE - Disclosed is a method for management of a modular power source including the steps of setting a first operation threshold, selecting a module 10-22-2009
20130099753HIERARCHICAL BATTERY MANAGEMENT SYSTEM - A hierarchical battery-management system mainly comprises a monitoring and equalizing module, an intermediary module, and a decision and communication module. The monitoring and equalizing module electrically couples with the battery cells, the intermediary modules electrically couple with the monitoring and equalizing module and the decision and communication module. The decision and communication module electrically couples with a power system or an electronic/electrical apparatus, and a hierarchical management structure constructed by the intermediary module to screen data and to transmit meaningful cell data to meet real time managing requirements of the large battery set.04-25-2013
20080218127Battery management systems with controllable adapter output - A battery management system comprises a control circuit and an adapter. The control circuit can be used to generate a control signal according to a status of each cell of a plurality of cells in a battery pack. The adapter receives the control signal and charges the battery pack. An output power of the adapter is adjusted according to the control signal.09-11-2008
20120293130SYSTEM AND METHOD FOR MANAGING PARALLEL-CONNECTED BATTERY CELLS - The present system and method manage a rechargeable battery comprising two or more battery cells or series stacks of cells. The system includes a set of switches, each of which connects a cell or stack of cells between positive and negative nodes when actuated, or connects one cell in a stack of cells to another cell in the stack when actuated, such that when all the switches in a given stack are actuated, it is connected between the positive and negative nodes. An electrical load is directly connected to the positive and negative nodes. A controller determines the state of each cell or stack of cells by measuring and/or calculating one or more predetermined characteristics, and selectively actuates the switches based on the states of the cells or stacks of cells so as to enhance the life of the battery.11-22-2012
20120293131SECONDARY BATTERY STATE OF CHARGE DETERMINATION APPARATUS, AND METHOD OF DETERMINING STATE OF CHARGE OF SECONDARY BATTERY - A technology described herein is for accurately determining the SOC of a secondary battery. An open-circuit-voltage-to-state-of-charge (OCV-SOC) characteristic has a capacity decrease estimation OCV region in which a relationship between the OCV and the SOC is assumed not to change due to degradation of the secondary battery 11-22-2012
20100102779System and method for controlling charging of battery of portable terminal - A portable terminal includes a charging control system. The system supplies electric power to the battery. If the battery is charged completely, the system stops charging the battery temporarily, adjusts the termination current, and then charges the battery to the preset second charge capacity. The system can recharge the battery if the battery of the second charge capacity under goes a natural discharge for a certain time period by a certain rate of the second charge capacity, for example, 1%, or if the maximum voltage corresponding to the second charge capacity drops by 1% of the maximum voltage. Therefore, the system can retail the maximum charged state of the battery.04-29-2010
20080246437Electronic Timepiece with Generator Function - An electronic timepiece with a generator function according to a first aspect of the invention has a generator, a storage unit that stores electrical energy produced by the generator, a timekeeping controller that is driven by the electrical energy stored in the storage unit, a time display that is controlled by the timekeeping controller and displays time, a voltage detector that detects the voltage of the storage unit, and a discharge unit that discharges the charge stored in the storage unit when the voltage of the storage unit detected by the voltage detector reaches a preset first setting.10-09-2008
20110267008Single-Power-Transistor Battery-Charging Circuit Using Voltage-Boosted Clock - A charge/discharge protection circuit protects a battery from inadvertent shorting on a charger node that can connect to a charger or to a power supply of a portable electronic device. A single n-channel power transistor has a gate that controls a channel between the battery and the charger node. The gate is connected to the charger node by a gate-coupling transistor to turn off the power transistor, providing battery isolation. The gate is driven by a voltage-boosted clock through a switch activated by an enable signal. The enable signal also activates a grounding transistor to ground a gate of the gate-coupling transistor. A comparator compares voltages of the charger and battery nodes, and the compare output is latched to generate the enable signal. An inverse enable signal activates a second switch that drives the voltage-boosted clock to the gate of the gate-coupling transistor to turn off the power transistor.11-03-2011
20080278116Battery protective device and semiconductor integrated circuit device - A battery protective device that protects against battery damage and semiconductor destruction from overdischarge and overcharge of the battery. Resistance across switching elements is controllable to prevent current leakage through parasitic dipole elements in the integrated circuit. Current is detected with an overdischarge detecting circuit and an overcharge detecting circuit. Direction of the current to/from the battery is detected by discharge overcurrent and charge overcurrent detecting circuits. Switching discharge FETs and charge FETs are enabled as independently controlled, ON-OFF parallel switching elements, interposed in series in the charge/discharge current path of the battery. Only a part of the discharge or charge switching FETs can be turned ON and OFF for accurate current control in accordance with the detected current and its direction.11-13-2008
20080284376ENERGY STORAGE TYPE FEEDER VOLTAGE COMPENSATION APPARATUS AND METHOD OF CONTROLLING FEEDER VOLTAGE - An energy saving type feeder voltage compensation apparatus improved in availability at low temperatures, wherein when a electric energy storage apparatus is lower in temperature than a predetermined value, an output voltage output to a feeder side is made equal to or higher than a no-load output voltage of a substation connected in parallel. Power is supplied to a power running rolling stock preferentially from the electric energy storage apparatus. The heating value of the secondary battery is increased and the battery temperature is raised by this discharging, whereby internal resistance of the electric energy storage apparatus is lowered, and the charging and discharging loss is suppressed, and the efficiency and availability of the energy saving type feeder voltage compensation apparatus as a whole are improved.11-20-2008
20080303484System For Controlling Voltage Balancing In a Plurality of Lithium-Ion Cell Battery Packs and Method Thereof - Disclosed is a system for adjusting a voltage balancing of cells in a lithium ion multicell battery pack. The system comprises a vertical interface outputting inputs of a reading balance signal defining a voltage reading period and a balance period and a reading hold signal holding a cell voltage when reading a voltage; an interface outputting an address clock for designating an address of a cell to be controlled and an input of a balance hold signal for independently reading a cell voltage within a voltage balance period; and a control section of a cell balancing adjusting circuit connected to the vertical interface and the interface and receiving signal outputs therefrom to adjust a balancing of cells.12-11-2008
20100127664METHOD FOR OPERATING AN ENERGY STORAGE SYSTEM - The present disclosure is concerned with operation of an energy storage system (ESS) connectable to an electric power system. The charging-discharging schedule of the ESS can be determined through application of a time-dependent forecast of ESS and power system states based on historical data. Exemplary embodiments can include ESSs which have been historically activated with a certain periodicity, for example, for power system load leveling, frequency regulation, arbitrage, peak load shaving and/or integration of renewable power generation.05-27-2010
20090315518Power supply device and vehicle - A power supply device mounted to a hybrid vehicle includes: a capacitor that is chargeable/dischargeable; an electric power input/output unit for inputting/outputting electric power between the capacitor and a charge/discharge device installed external to the hybrid vehicle; a temperature sensor detecting a temperature of the capacitor; and a control device increasing the temperature of the capacitor by performing at least one of charging from the charge/discharge device to the capacitor and discharging from the capacitor to the charge/discharge device when the control device determines based on a detection result of the temperature sensor that the temperature of the capacitor is required to be increased. Thereby, the temperature of the capacitor can be increased without causing a load such as an inverter to consume electric power.12-24-2009
20080278115Battery Management System - A battery management system for use with one or more cells comprising the system having one or more battery monitor and programmable logic which is connected to the one or more battery monitor to modify its battery operation and report battery status. The programmable logic may be configured to analyse physical data relating to the effect of temperature on battery capacity and/or the effect of temperature on battery self discharge current. Implementation is applicable to all electrical energy storage systems that comprise series or parallel connected electro chemical storage elements. This includes Super or Ultra Capacitor's, fuel cells, NiMH, NiCd, Pb & Lithium Chemistry battery packs.11-13-2008
20100201324BATTERY CHARGING AND DISCHARGING APPARATUS AND METHOD - The invention provides a battery charging and discharging apparatus and method. The battery charging and discharging apparatus comprises a power source and a plurality of charging and discharging module. The charging and discharging module comprises a current-limiting transistor, a current-limiting resistor, a charging controlling unit, and a discharging controlling unit, wherein both the charging controlling unit and the discharging controlling unit are of battery voltage tracking types. When the charging and discharging module charges a battery, the voltage across two ends of the current-limiting transistor and the current-limiting resistor connected in series is limited to a fixed value by the charging controlling unit. When the battery discharges, the voltage across two ends of the current-limiting transistor and the current-limiting resistor connected in series is limited to a fixed value by the discharging controlling unit. Besides, the discharging controlling unit feedbacks the discharging energy from the battery to the power source.08-12-2010
20100201323BATTERY PACK AND BATTERY CAPACITY CALCULATING METHOD - A battery pack includes: at least one secondary battery; a first terminal and a second terminal to perform charge and discharge; a discharge control switch controlled by a first control signal, for turning on/off a discharge current; a charge control switch controlled by a second control signal, for turning on/off a charging current; and a control section to detect a voltage, a current, and a temperature of the secondary battery, control the charge control switch and the discharge control switch by outputting the first control signal and the second control signal in accordance with the voltage, the current, and the temperature of the secondary battery, and calculate a battery capacity of the secondary battery. The control section calculates the battery capacity of the secondary battery by different methods in accordance with respective cases where the secondary battery is being charged, being discharged, and in a fully charged state.08-12-2010
20080290837ELECTRONIC SYSTEM FOR A BATTERY - An electronic system for a battery comprises a charging circuit (11-27-2008
20080272739BATTERY MONITORING ARRANGEMENT HAVING AN INTEGRATED CIRCUIT WITH LOGIC CONTROLLER IN A BATTERY PACK - A battery monitoring device of a battery pack configured for powering a cordless power tool may include an integrated circuit connected to a microprocessor of the pack that is external to the integrated circuit, and which is connected to each of N battery cells of the pack. The integrated circuit may be configured to take, singly or sequentially, a sampled reading comprising one of an individual cell voltage or a total pack voltage for all cells in the pack. The sampled reading is filtered in the integrated circuit prior to being read by the microprocessor.11-06-2008
20110006738ELECTROLYTE ADDITIVES FOR LITHIUM BATTERIES AND RELATED METHODS - The present invention relates generally to electrochemical cells, and more specifically, to additives for electrochemical cells which may enhance the performance of the cell. In some cases, the additive may advantageously reduce or prevent formation of impurities and/or depletion of active components of the cell during operation, to increase the efficiency and/or lifetime of the cell. The incorporation of certain additives within the electrolyte of the cell may improve the cycling lifetime and/or performance of the cell.01-13-2011
20110006736Battery and Energy Management Circuit with Temporal Storage Mode - An energy management circuit (01-13-2011
20090085520STATE OF CHARGE OPTIMIZING DEVICE AND ASSEMBLED BATTERY SYSTEM INCLUDING SAME - A state of charge optimizing device according to the present invention optimizes a state of charge of each of a plurality of cells which are connected in series to form an assembled battery, and conducts the optimization by discharging or charging a part or all of the plurality of cells so that the differences between the amount of charge after the optimization and the amount of charge in a predetermined state of charge become uniform.04-02-2009
20130119938CIRCUIT AND SYSTEM AND METHOD FOR CONTROLLING BATTERY - A battery control circuit for balancing a battery includes a voltage detector, a controller, a balancing device, and a switch. The voltage detector is configured to detect a voltage difference of the battery so as to generate a detecting signal. The controller is configured to generate a control signal according to the detecting signal. The switch is coupled between the battery and the balancing device, and is opened or closed according to the control signal, wherein if the voltage difference is greater than a threshold value, the switch is closed and the balancing device draws a load current from the battery, and if the voltage difference is smaller than or equal to the threshold value, the switch is opened and the balancing device is not capable of drawing any current.05-16-2013
20130119939CHARGE/DISCHARGE SCHEDULING SYSTEM AND CHARGE/DISCHARGE SCHEDULING METHOD - There is provided a charge/discharge scheduling system in which a measurer measures temperature of a battery unit, a current/voltage measurer measures a voltage and a current at the battery unit, an estimating unit estimates an internal resistance of the battery unit, a scheduler creates, based on a charge/discharge instruction specifying charge amount or discharge amount, a charging schedule or a discharging schedule for the battery unit, a temperature estimating unit estimates time-transition of temperature of the battery unit, based on the internal resistance of the battery unit, the load estimator estimates a load amount applied to the battery unit based on the temperature time-transition of the battery unit provided that the charging schedule or the discharging schedule is carried out, the charge/discharge scheduler creates the charge schedule or the discharge schedule so that the load amount applied to the battery unit is a minimum or smaller than a threshold value.05-16-2013
20130119940LITHIUM SECONDARY BATTERY AND CONTROL SYSTEM THEREFOR, AND METHOD FOR DETECTING STATE OF LITHIUM SECONDARY BATTERY - There is provided a control system for a lithium secondary battery that can quantitatively sense a deterioration state inherent in a lithium secondary battery using silicon oxide as a negative electrode active material, that is, the nonuniform reaction state of a negative electrode. A control system for a lithium secondary battery including a positive electrode, a negative electrode using silicon oxide as a negative electrode active material, and a lithium reference electrode having a reference potential with respect to the negative electrode includes measurement means for measuring a voltage V of the negative electrode with respect to the lithium reference electrode and a discharge capacity Q of the lithium secondary battery during discharge of the lithium secondary battery; generation means for generating a V-dQ/dV curve representing a relationship between dQ/dV, which is a proportion of an amount of change dQ in the discharge capacity Q to an amount of change dV in the voltage V, and the voltage V; calculation means for calculating an intensity ratio of two peaks appearing on the V-dQ/dV curve for two voltage values in the voltage V; and sensing means for sensing a state of the negative electrode utilizing the intensity ratio.05-16-2013
20130214741DISCHARGE TYPE BATTERY MANAGEMENT SYSTEM AND METHOD THEREOF - In a discharge type battery management system and a method thereof, a monitoring unit is used to monitor a plurality of battery units, and if there is a change of electric potential, current and temperature of the battery units, a control unit controls a plurality of separate energy storage units, so that when the battery pack is charged, at least one of the battery units with a relatively high potential is discharged to equalize the overall electric potential of the battery pack, so as to enhance the energy conversion efficiency.08-22-2013
20110204852POWER STORAGE SYSTEM - A power storage system is provided. A control apparatus controls the power storage system to perform a charging mode in which an assembled battery is charged in a first predetermined time period and a discharging mode in which the assembled battery is discharged in a second predetermined time period. A residual electric power amount determination unit detects an amount of one of electric current and electric power currently remaining in the assembled battery. A discharged electric power amount determination unit detects an amount of one of electric current and electric power discharged from the assembled battery during the second predetermined time period. The control apparatus estimates an amount of one of electric current and electric power discharged from the assembled battery during a next second predetermined time period based on amounts of one of electric current and electric power having been discharged from the assembled battery during past second predetermined time periods to obtain an estimated value. A correction control unit controls the power storage system not to perform the charging mode in a next first predetermined time period if the estimated value is less than the amount of one of electric current and electric power currently remaining in the assembled battery.08-25-2011
20100141214POWER SWITCHING MODULE FOR BATTERY MODULE ASSEMBLY - Disclosed herein is a power switching module for a battery module assembly constructed in a structure in which a plurality of rectangular battery modules, each having a plurality of battery cells or unit modules connected in series to each other, are stacked in the width direction (the longitudinal direction) and the height direction (the transverse direction) by at least twos such that the rectangular battery modules generally constitute a hexahedral structure (hexahedral stack), outer edges of the hexahedral stack are fixed by a frame member, and input and output terminals of the rectangular battery modules are oriented such that the input and output terminals of the rectangular battery modules are directed toward one surface (a) of the hexahedral stack, wherein the power switching module comprises an insulative substrate mounted to the surface (a) of the hexahedral stack in a coupling fashion, elements mounted on the insulative substrate for controlling voltage and current during the charge and discharge of the rectangular battery modules, and connection members mounted on the insulative substrate for interconnecting the control elements.06-10-2010
20120105009SYSTEMS AND METHODS FOR DETERMINING BATTERY STATE OF CHARGE05-03-2012
20120105008POWER TOPOLOGY WITH BATTERY CHARGING AND DISCHARGE CURRENT PROTECTION CAPABILITIES - Generally, a system includes a control circuitry configured to detect a current wherein the detected current is one of a battery discharge current or a battery charging current; a first transistor configured to disconnect a load from at least one of a battery and a DC/DC converter if the battery discharge current exceeds a maximum battery discharge current setting; and a second transistor configured to adjust the charging current to maintain the charging current at or near a charge current setting.05-03-2012
20090128094Alarm-including protection apparatus for lithium-ion battery and method thereof - An alarm-including protection apparatus and method thereof are used to protect a lithium-ion battery with a plurality of series cells. The protection apparatus includes a voltage balance controller for detecting the terminal voltage of each cell and correcting the terminal voltage of each cell. A protection unit and the lithium-ion battery are connected in series. A microprocessor connects to the voltage balance controller and the protection unit for receiving the terminal voltage of each cell and figuring out a voltage difference between the maximum terminal voltage and the minimum terminal voltage of the series cells. According to the comparison result of the voltage difference and a plurality of critical voltage differences, the microprocessor is used to correct the terminal voltage of each cell, generate an alarm signal or stop charging to the lithium-ion battery.05-21-2009
20110215764CHARGE CONTROL SYSTEM - An in-vehicle charge control system includes a vehicle-state detector that detects a running state of a vehicle, a battery-state detector that detects a charge level of an in-vehicle battery, a fuel-efficiency-enhancement controller that predicts a discharge amount to be discharged by the battery under a discharge condition, sets a lower limit of the battery charge level on the basis of the battery charge level detected by the detector such that the lower limit of the battery charge level is higher than a battery charge level at which the battery begins to degrade by the predicted discharge amount, and controls a power generation amount of a vehicle generator according to the vehicle state detected by the detector. The system with this configuration can maintain the battery charge level and enhance the fuel efficiency simultaneously under practical use conditions.09-08-2011
20090174367METHOD AND SYSTEM FOR OPERATING A PORTABLE ELECTRONIC DEVICE IN A POWER-LIMITED MANNER - Improved techniques to manage operation of a portable electronic device having a substantially depleted battery when power is available from an external, power-limited source are disclosed. In one embodiment of the invention, the substantially depleted battery can be initially charged while a power-intensive operation is delayed. Once the battery has adequate charge to assist the external, power-limited source in powering the portable electronic device, the power-intensive operation can be performed. In this manner, power consumption of a portable electronic device can be managed so that reliable operation is achieved without exceeding limits on power being drawn from an external, power-limited source.07-09-2009
20090184683Vehicle control system for controlling charging and discharging control of a battery - A vehicle control system has a battery mounted to a vehicle, a vehicle alternator charging the battery, a battery current detection device detecting a charging/discharging current of the battery, a voltage regulation device regulating an output voltage of the vehicle alternator to a specified output voltage, and a temperature sensor mounted to the inside of the battery current detection device. One terminal of a shunt resistance is connected to a negative terminal of the battery through a battery clump, and the other terminal of the shunt resistance is grounded. The temperature sensor is placed close to the shunt resistance. This structure enables the temperature sensor to detect the temperature of the battery with a high accuracy while considering the temperature characteristics of the shunt resistance.07-23-2009
20090085521SAFETY CIRCUIT AND BATTERY PACK USING THE SAME - A safety circuit includes a thermal fuse electrically connected in a main current path so that an electric current flowing in the main current path flows through the thermal fuse; a switching element electrically connected to the thermal fuse to cause the thermal fuse to open and interrupt the electric current flowing in the main current path when the switching element is turned on; a microcontroller electrically connected to the switching element and the main current path to turn on the switching element when an overcurrent flows in the main current path; and a noise removing unit electrically connecting the microcontroller to the switching element.04-02-2009
20090273313CAPACITY FADE ADJUSTED CHARGE LEVEL OR RECHARGE INTERVAL OF A RECHARGEABLE POWER SOURCE OF AN IMPLANTABLE MEDICAL DEVICE, SYSTEM AND METHOD - System and method for estimating the time before recharging the rechargeable power source of an implantable medical device. In a method, the present charge level of the power source is determined by determining the percentage of total charge consumed over a period of time. The present charge level is then divided by the expected power use to determine time remaining before recharging. Another method utilizes a model to determine the faded capacity of the rechargeable power source based on the number of times the rechargeable power source has been charged and the duration of the rechargeable power source's life.11-05-2009
20090184682BATTERY PACK - A plurality of cells are housed in a metal case with positive (+) terminals and negative (−) terminals thereof connected through a connection member. The metal case includes positive-side and negative-side external terminals, and the external terminals and terminals of respective cells are connected to each other by a lead wire. In the metal case, there are provided a protective circuit for preventing the respective cells from being overcharged or overdischarged and a battery output control switch interlocking with a power switch of the protective circuit. The power switch of the protective circuit is provided outside the metal case to permit turning-on/off operations from the outside of the metal case.07-23-2009
20090184685BATTERY PACK AND METHOD OF CHARGING THE SAME - A method of charging a battery pack including at least one secondary battery includes charging the secondary battery using a constant current-constant voltage method, measuring a charging voltage applied to the secondary battery, interrupting the charging the secondary battery when the charging voltage of the secondary battery is equal to or higher than a first set voltage, measuring an open circuit voltage (OCV) of the battery pack in during or after a second time period after the charging has been interrupted, and terminating the charging of the battery pack when the measured OCV is equal to or higher than a second set voltage.07-23-2009
20090015206CELL MONITORING AND BALANCING - A method for monitoring the voltage of each of a plurality of cells of a battery pack is provided. The method may include monitoring a voltage potential for each of a plurality of cells in a battery pack utilizing a single channel of battery control unit within the battery pack. If, during discharge of the battery, e.g., the battery is being used to power a hand tool, the voltage potential of any cell is determined by the battery control unit to be below a predetermined minimum voltage, the battery control unit discontinues a current flow from battery pack to the tool. Additionally, during charging of the battery pack, if a voltage differential between any one of the cells and any other one of the cells is determined to be above a predetermined maximum differential, the battery control unit reduces the voltage potential stored in the cell having the higher voltage potential.01-15-2009
20090015204Method and apparatus for managing operations associated with a backup power source at a network terminal - A method and apparatus provide for managing operations associated with a backup power source at a network terminal. A network terminal includes a battery port that, when enabled, is configured to monitor status of a battery coupled to the battery port and provide a status indicator for the battery. The network terminal also includes an interface with selectable states. A control circuit detects the state of the interface and presence of a battery at the battery port. In response to the interface being in a given state in an absence of a battery coupled to the battery port, the control circuit causes the battery port to enter or remain in a disabled state. The battery port substantially maintains the disabled state over reset, loss of power and reconfiguration of the network terminal. If the battery port detects the presence of a battery, it responds by entering an enabled state to monitor the status of the battery and provide battery status indicators.01-15-2009
20110140669SECONDARY BATTERY DEVICE AND VEHICLE - A battery device includes secondary battery cells, a detector configured to detect respective voltages of the cells, a first circuit configured to output an overvoltage alarm signal for notifying whether each of the voltage values of the cells is an overvoltage equal to or more than a threshold. value, a second circuit configured to output a first level shutdown signal to an upper controller when any of the secondary battery cells is judged to be overvoltage by the overvoltage alarm signal, and a third circuit configured to be supplied with the shutdown signal and to control operations of the first circuit and the second circuit. The second circuit assumes the shutdown signal at a second level when making self-diagnosis on the first circuit, and outputs an alarm signal for notifying the third circuit of, when the overvoltage alarm signal noticing an overvoltage is supplied, the overvoltage.06-16-2011
20090051323BATTERY PACK - A protecting circuit monitors a voltage of a secondary battery and supplies the signal to permit a discharge to a gate terminal of a discharge control FET when the voltage is equal to or more than a lower limit value in a rated voltage range. When the discharge control FET receives this signal, it is connected and passes a discharge current. In the other cases, it shuts off the discharge current. Further, when the voltage is equal to or more than a predetermined value, a signal of a voltage of a battery voltage or more is supplied from a voltage converter to the gate terminal. When the voltage is equal to or less than an upper limit value in the rated voltage range, the protecting circuit supplies the signal to permit a charge to a gate terminal of a charge control FET. Further, when the voltage is equal to or more than a predetermined value, the voltage output from the voltage converter is supplied to the gate terminal. A battery pack in which by applying the voltage of the battery voltage or more to the gate terminal, the discharge control FET and the charge control FET are controlled and an energy loss is suppressed to the minimum is provided.02-26-2009
20090051324BATTERY PACK AND METHOD FOR DETECTING DISCONNECTION OF SAME - The battery pack includes an assembled battery including a plurality of secondary battery cells connected at least in series; a voltage detector which detects a terminal voltage of each of the plurality of secondary battery cells; a charge/discharge controller which controls charge/discharge of the assembled battery based on the terminal voltage of each cell detected by the voltage detector; a short-circuiting section which short-circuits a node between cells to the high voltage side or the low voltage side of a power line, or which short-circuits nodes between the cells to each other; and a disconnection detector which controls conduction/non-conduction of the short-circuiting section and which detects a disconnection of the connection line from the voltage detector to the node between the cells, based on a state of controlling the conduction/non-conduction, and at least one of a voltage at the node between the cells detected by the voltage detector, a voltage of the high voltage side or the low voltage side of the power line, and a terminal voltage of each cell. The floating (disconnection) of intermediate taps of the secondary battery cells can be reliably detected without causing losses in regular processes.02-26-2009
20090184684NO DRAIN POWER SAVER - A battery protection device for disconnecting a plurality of batteries from an inverter to avoid excessive discharge. The device comprises at least one battery connector for connecting to the plurality of batteries, at least one inverter cable for connecting to the inverter, and a plurality of wires for connecting to an AC input. The device gets activated when the AC input to the inverter cuts off and continuously monitors a voltage level of the batteries. Further, the device automatically disconnects the batteries from the inverter at a preset voltage level and shuts itself off to achieve a protection mode wherein the device does not draw any current to avoid further drainage of the batteries. A voltage level of the device is set above a preset voltage for recharging batteries and when the AC input is restored, the device reconnects the batteries to the inverter.07-23-2009
20110227539BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided is a battery state monitoring circuit including: a charge/discharge control circuit for detecting and controlling a state of a secondary battery; an automatic recovery circuit; a temperature sensor circuit; and a comparator for comparing a voltage of an output terminal of the automatic recovery circuit and a voltage of the secondary battery, and outputting a signal indicative of a result of the comparison to the temperature sensor circuit, to control an operation of the temperature sensor circuit. The temperature sensor circuit operates only when the output of the automatic recovery circuit is larger, that is, only when a charger is connected between external terminals.09-22-2011
20110227538CIRCUITS FOR GENERATING REFERENCE SIGNALS - A circuit for generating a reference signal can include a first resistor string and a second resistor string substantially identical to the first resistor string, a trim circuit, and a resistor controller. The trim circuit coupled to the first resistor string is operable for generating the reference signal according to a terminal voltage at a terminal in the first resistor string. The resistor controller coupled to the first resistor string and the second resistor string is operable for selectively shorting out a resistor in the first resistor string and a corresponding resistor in the second resistor string.09-22-2011
20090051322Battery Control Device And Hybrid Forklift Truck Equipped With The Device - A battery control device and a hybrid forklift truck provided with an engine and battery-driven motor generator and equipped with the device with which control is performed so that excessive exhaustion or charging of the battery does not occur in operation of the forklift truck.02-26-2009
20090009134METHOD AND DEVICE FOR MEASURING INTERNAL RESISTANCE OF BATTERY - A device for measuring an internal resistance of a battery includes a charging unit, a switch, a measuring unit, and a calculating unit. The charging unit is used for respectively charging the battery through a first resistor (R01-08-2009
20090200987CHARGING APPARATUS AND CHARGING/DISCHARGING APPARATUS - Charging apparatus 08-13-2009
20090200986Protective circuit for energy-storage device - A method and apparatus for protecting an energy-storage device (ESD), such as a rechargeable battery, is provided. A protective circuit protects an ESD from adverse charging and loading conditions including overcharging, overdischarging, charging at an excessive rate and discharging at an excessive rate. The protective circuit selectively disables charging and discharging based on the present terminal conditions. A plurality of ESDs and protective circuits can be interconnected to protect a multi-cell ESD device. Embodiments of the protective circuit are adapted to protect a lithium cell operating around 2 volts. The protective circuit may also protect the ESD from adverse temperature conditions.08-13-2009
20090001935Battery Charging System - A battery charging system is disclosed. The battery charging system includes a battery cell, a voltage measurement circuit and an overvoltage protection circuit. The voltage measurement circuit measures a cell voltage of the battery cell. The overvoltage protection circuit is configured to stop charging the battery cell when a reading voltage measured by the voltage measurement circuit reaches an overvoltage setting value. The battery charging system also includes a battery charger for charging the battery cell, and a control unit for supplying a control voltage to the battery charger to perform feedback control of an output voltage of the battery charger. The battery charger includes a voltage feedback input for receiving a feedback voltage and a setting value input for receiving a setting voltage. The control voltage is generated based on the reading voltage and the setting voltage.01-01-2009
20090021217METHOD AND DEVICE FOR SAFETY PROTECTION OF SECONDARY BATTERY - A method and device for safety protection of a secondary battery capable of preventing smoking and ignition thereof. A lithium cell 01-22-2009
20090212742Lithium Ion Battery and Method of Power Conservation for the Same - A lithium ion battery and a method of power conservation for the same are provided. A bare cell including an electrode assembly with a plurality of electrodes and a protective circuit are coupled together via the plurality of electrodes. The protective circuit includes a remaining charge control circuit that internally detects a long-term nonuse state of the lithium ion battery and blocks current between the bare cell and the protective circuit when the long-term nonuse state is detected. The method includes: detecting whether the battery is used as a power source for an external instrument; determining and recording a value of an accumulated nonuse time when the lithium ion battery was not used as a power source; and blocking an internal current and converting the battery to a long-term nonuse mode when the value of the accumulated nonuse time is above a value indicative of a predetermined time.08-27-2009
20090243546CHARGE AND DISCHARGE CONTROL CIRCUIT AND BATTERY DEVICE - Provided are a charge and discharge control circuit capable of reducing a circuit size, and a battery device. In a charger reverse connection detection circuit (10-01-2009
20090243545Battery pack - A battery pack includes a status detection unit for detecting a status of a battery; a switch unit for interrupting a discharging path of the battery; a notification unit for notifying a user of the status of the battery; an operation unit operable by the user; and control unit for opening and closing the switch unit. The control unit is configured to have the switch unit interrupt the discharging path of the battery when the status of the battery detected by the status detection unit is abnormal. Further, the control unit is configured to have the notification unit notify the user of the availability to restart a discharging operation and close the switch unit in response to an operation signal inputted from the operation unit to make the battery pack dischargeable when the status of the battery detected by the status detection unit is recovered from the abnormal status.10-01-2009
20100148727Single-Power-Transistor Battery-Charging Circuit Using Voltage-Boosted Clock - A charge/discharge protection circuit protects a battery from inadvertent shorting on a charger node that can connect to a charger or to a power supply of a portable electronic device. A single n-channel power transistor has a gate that controls a channel between the battery and the charger node. The gate is connected to the charger node by a gate-coupling transistor to turn off the power transistor, providing battery isolation. The gate is driven by a voltage-boosted clock through a switch activated by an enable signal. The enable signal also activates a grounding transistor to ground a gate of the gate-coupling transistor. A comparator compares voltages of the charger and battery nodes, and the compare output is latched to generate the enable signal. An inverse enable signal activates a second switch that drives the voltage-boosted clock to the gate of the gate-coupling transistor to turn off the power transistor.06-17-2010
20120194140SYSTEM AND METHODS OF USING A SODIUM METAL HALIDE CELL - An energy storage system can comprise: an energy storage device and a temperature management device and controller configured for establishing an intra-cell temperature gradient along the axis when the energy storage device is in an idle state. The energy storage device can have an axis and comprise a housing having an axis and an interior surface defining a volume; a separator disposed in the volume and having a first surface that defines at least a portion of a first chamber and a second surface that defines at least a portion of a second chamber; a cathodic material in ionic communication with the separator; and an electrolyte in ionic communication with the cathodic material and the separator. The first chamber can be in ionic communication with the second chamber through the separator.08-02-2012
20100148728Power Control Unit - A power control apparatus for controlling charging and discharging of a plurality of storage devices, including a voltage measuring device for measuring voltages of the storage devices, a current measuring device for measuring currents flowing through the storage devices, a status detecting device for detecting the operating status of each of the storage devices from values measured by the voltage measuring device and the current measuring device, and a charging/discharging controlling device for controlling currents, voltages, or power according to the operating status of each storage device detected by the status detecting device to charge or discharge the storage devices.06-17-2010
20090315520BATTERY PACK AND CONTROL METHOD THEREFOR - A battery pack includes one or more cell blocks in which one or more secondary battery cells are connected in series and/or in parallel, and a control section for measuring a voltage of the one or more cell blocks to detect an abnormality of a cell block on the basis of a measurement result. The control section calculates a time differential of the voltage for the one or more cell blocks on the basis of the measured voltage, extracts a first time differential which is maximum and a second time differential which is minimum from the time differentials of the voltage for the one or more cell blocks, and determines that a cell block corresponding to the second time differential is abnormal in a case where a difference between the first time differential and the second time differential is less than a prescribed value.12-24-2009
20090315517PROTECTIVE CIRCUITS FOR SECONDARY BATTERY PACKS - This invention discloses a charging/discharging protective circuit for a secondary battery pack, having an over-charging/discharging voltage comparator, a reference voltage source and a battery status decision circuit. There is also a sampling circuit having a sequential pulse generator for generating pulses for selecting one of the batteries in the battery pack for testing purposes. The pulse generator provides M-channel gating pulses to the selection circuit of the battery under test and provides sampling pulses to the over-charging/discharging voltage comparators. The reference voltage source has a regulated output circuit. This invention uses time division inspection methods to provide a cost-effective solution for inspecting batteries in a battery pack.12-24-2009
20100176765ELECTRICITY STORAGE DEVICE AND HYBRID DISTRIBUTED POWER SUPPLY SYSTEM - It is an object to effectively output electrical energy of a storage battery to an electrical power system serving as a whole distributed power supply system by effectively utilizing the electrical energy within a charging ratio range that does not cause overcharging or overdischarging of the storage battery. In a hybrid distributed power supply system, the target supply electrical power is set based on the electrical power generation output of the electrical power generator and the charging state of the storage battery, and the target supply electrical power is restricted within a predetermined permissible supply electrical power range when the target supply electrical power deviates from the predetermined permissible supply electrical power range.07-15-2010
20090121682SEMICONDUCTOR UNIT FOR PROTECTING SECONDARY BATTERY, BATTERY PACK HAVING THE SEMICONDUCTOR UNIT BUILT-IN AND ELECTRONIC APPARATUS USING IT - A semiconductor unit for protecting a secondary battery has a current detecting terminal converting a charging current to a negative voltage with respect to a negative electrode potential (ground potential) of the secondary battery when the secondary battery is charged, converting the charging current to a positive voltage with respect to the negative electrode potential (ground potential) of the secondary battery when the secondary battery is discharged, and detecting the charging/discharging current; and a test signal generating circuit generating a first test signal when the voltage of the current detecting terminal lowers to a first negative voltage which does not occur in a normal operation state of the semiconductor unit, and generating a second test signal when the voltage of the current detecting terminal lowers to a second negative voltage lower than the first negative voltage.05-14-2009
20100156352Controller and Control Method for Charging of the Secondary Battery - A charging/discharging controller (06-24-2010
20100188049CURRENT TO FREQUENCY CONVERSION, APPARATUS AND METHODS - Electronic apparatus, methods of forming the electronic apparatus, and methods of operating the electronic apparatus include features of current to frequency conversion that may be implemented in a variety of applications. Additional apparatus, systems, and methods are disclosed.07-29-2010
20120139498BATTERY POLARITY DETECTION SYSTEM - The battery polarity detection system contains multiple detection terminals, a control unit, and a charging/discharging circuit. Each detection terminal is connected to a terminal of a battery. The control unit has an internal default voltage and is capable of measuring voltage differences between the detection terminals and comparing the voltage differences with the internal default voltage. If a voltage difference between a first detection terminal and a second detection terminal is greater than the internal default voltage, the control unit makes said first detection terminal of a greater voltage connected to a positive terminal of the charging/discharging circuit; and the control unit makes the second detection terminal of zero voltage connected to a negative terminal of the charging/discharging circuit, thereby forming a complete loop. The battery polarity detection system can correctly identify the polarity of a battery, avoiding burning down the battery's control or password IC.06-07-2012
20100259222Battery protection circuit, method for protecting battery, power supply device and program - A reusable period of a battery can be maintained for a long time by recharging while avoiding abnormal heating of the battery due to over discharge. A battery protection circuit comprises a control part that cuts off a discharge switch which is a discharge path to a load for a battery when a voltage value of the battery is equal to or less than a first threshold value, or when the voltage value of the battery is less than the first threshold value, wherein the control part cuts off a power switch as a power supply path to the control part itself when the voltage value of the battery is equal to or less than a second threshold value, or when the voltage value of the battery is less than the second threshold value which is lower than the first threshold value.10-14-2010
20100171466Lithium-ion batteries and methods of operating the same - The methods and devices described herein generally relate to lithium-ion batteries, methods of preparing, and methods of operating such batteries. The lithium-ion batteries described herein have an improved cycle life. In one exemplary variation, the lithium-ion battery includes an anode including carbon-coated Li07-08-2010
20090079394SYSTEM AND METHOD FOR CHARGING A RECHARGEABLE BATTERY - The present invention includes a system and method of charging a rechargeable battery. The system can further include a processor that is adapted to control one of the high power charger or the low power charger to charge the battery in response to the high power input voltage relative to a predetermined high power voltage value and the low power input voltage relative to a predetermined low power voltage value. The method can include the steps of determining a high power input voltage of the high power source, determining a low power input voltage of the low power source, causing a high power charger to charge the battery in response to a sufficient high power input voltage, and causing a low power charger to charge the battery in response to an insufficient high power input voltage and a sufficient low power input voltage.03-26-2009
20090079396Disconnection detection device of assembled battery system and disconnection detection method of same - Upon detecting a disconnection, a current detection circuit supplies a detection current to connection lines between each cell and the corresponding voltage monitoring circuit. The detection current is larger than a consumption current flowing via each voltage monitoring circuit in a normal state. When the disconnection occurs, a diode changes a route in which the detection current flows so as to reverse an electric potential relation between a positive-side power line and a negative-side power line of the corresponding cell and a reverse detection circuit detects the reverse of the electric potential relation to output a disconnection detection signal.03-26-2009
20090079395Charge and discharge control circuit and rechargeable power supply device - A charge and discharge control circuit which accommodates pulsed charge and pulsed discharge and can control charge and discharge of a secondary battery with safety, and a rechargeable power supply device having the same built therein are provided. The charge and discharge control circuit includes a delay time switching circuit for shortening a delay time of overcharge detection after charge inhibition is canceled. When overcharge is detected after the charge inhibition is canceled, the charge is inhibited in a delay time which is shorter than a normal delay time of the overcharge detection.03-26-2009
20100001694CONTROL SIGNAL GENERATION CIRCUIT AND BATTERY MANAGEMENT SYSTEM USING THE SAME - A control signal generating circuit used in a battery management system may stably generate a control signal. The control signal generating circuit includes a first signal line transmitting a first control signal having an on-level or an off-level, a second signal line transmitting a second control signal having an on-level or an off-level, and a third signal line transmitting a third control signal having an on-level or an off-level. In addition, the control signal generating circuit includes a transistor including a first electrode coupled to the first signal line and a second electrode applied with the off-level. The transistor electrically connects the first and second electrodes and converts the first control signal into a fourth control signal by being turned on based on the second and third control signals. Finally, the control signal generating circuit includes a circuit unit generating a fifth control signal having the on-level when the second and third control signals are input and have the off-level.01-07-2010
20100001693DETERIORATION DETERMINATION CIRCUIT, POWER SUPPLY APPARATUS, AND DETERIORATION DETERMINATION METHOD OF SECONDARY BATTERY - Provided is a deterioration determination circuit configuring by including: an SOC detection unit for detecting an SOC of a secondary battery; an internal resistance detection unit for detecting an internal resistance value of the secondary battery; a first determination unit for determining the status of deterioration of the secondary battery based on the internal resistance value detected by the internal resistance detection unit when the SOC detected by the SOC detection unit is within a range of a pre-set first range; a second determination unit for determining the status of deterioration of the secondary battery based on the internal resistance value detected by the internal resistance detection unit when the SOC detected by the SOC detection unit is within a range of a pre-set second range as a range of an SOC, in which a variation of the internal resistance of the second battery in relation to a variation of the SOC of the secondary battery is different from the first range; and a final determination unit for ultimately determining that the secondary battery is deteriorated when the first determination unit determines that the secondary battery is of the deteriorated status and the second determination unit additionally determines that the secondary battery is of the deteriorated status.01-07-2010
20120032644BATTERY SYSTEM, VEHICLE, AND BATTERY-MOUNTING DEVICE - Disclosed is a battery system that, in a laminated part of a power generating element in a lithium ion rechargeable battery, can properly detect a temperature and the distribution of a temperature change occurring in a positive-negative extending direction and can utilize the detected data in the control of the battery. Also disclosed are a vehicle and a battery-mounting device comprising the battery system. A battery system comprises a lithium ion rechargeable battery. The lithium ion rechargeable battery comprises a power generating element comprising a laminated part, a positive electrode extended part, and a negative electrode extended part. The battery system further comprises a control means and a central temperature detecting means that detects the temperatures of a central laminated part in the laminated part, and at least one of a positive-side temperature detecting means that detects the temperatures of a positive-side laminated part in the laminated part and a negative-side temperature detecting means that detects the temperatures of a negative-side laminated part in the stacked part. The control means controls the lithium ion rechargeable battery using the temperature of the central laminated part, and at least one of the temperature of the positive-side laminated part and the temperature of the negative-side laminated part.02-09-2012
20100259221BATTERY MONITORING AND CONTROL SYSTEM AND METHOD OF USE - A battery monitoring and control system and method of monitoring and controlling provides a redundant and independent symmetric secondary serial bus in addition to a primary serial bus within a battery monitoring and control system that includes a plurality of battery monitoring modules and associated IC battery monitor chips in serial communication with a system controller. Additionally, no two serial communication pins from an interface in operative communication with an associated one of a primary or a secondary serial bus are directly adjacent thereby allowing for continuous battery operation when a single pin in a series of battery monitoring modules becomes non operational failed. Additionally, the battery system remains operational when an open or short circuit occurs in only one of either the primary or secondary serial bus.10-14-2010
20090045778METHOD FOR UPDATING MINIMUM AND MAXIMUM ENERGY STORAGE VALUES - A battery control system comprises a battery control module, an averaging module, and a supervisor module. The battery control module measures voltages of N energy storage blocks, wherein N is an integer greater than one, and determines a first voltage of the voltages at a first rate. The first voltage is one of a maximum voltage and a minimum voltage. The averaging module calculates an average voltage at a second rate that is greater than the first rate. The average voltage is based on a measured total voltage of an energy storage pack including the N energy storage blocks. The supervisor module generates an updated voltage based on the first voltage and the average voltage and controls a vehicle system based on the updated voltage.02-19-2009
20100207582Multi-Cell Protection Circuit and Method - A multi-cell protection circuit and method. The multi-cell protection circuit comprises one or more multi-cell protection chips, a charge control switch (M08-19-2010
20100237831DEVICE, IN PARTICULAR CHARGING DEVICE, FOR CHARGING AN ACCUMULATOR - Charging devices which can be operated in a plurality of manually selectable charging modes and which have a discharging device are known. According to the invention, a storage charge mode which is optimized for storage of the accumulator is proposed. For this purpose, a device for determining the charge state of the accumulator is provided. When the storage charge mode is activated, the accumulator is charged only up to a predefined, optimized partially charged state, in which case the discharging device discharges the accumulator as far as the predefined partially charged state if the charge state which is determined at the start of the storage charge mode is higher than the predefined partially charged state.09-23-2010
20120139496MULTI-MODE CHARGING OF HIERARCHICAL ANODE - One aspect of the present invention provides an electrochemical cell system comprising at least one electrochemical cell configured to be connected to a power supply to recharge the cell. The electrochemical cell system comprises a plurality of electrodes and electrode bodies therein. The electrochemical cell system further comprises a switching system configured to permit modifications of the configuration of anodes and cathodes during charging of the electrochemical cell, and a controller configured to control the switching system. The controller is configured to selectively apply the electrical current to a different number of said electrode bodies based on at least one input parameter so as to adjust a rate and density of the growth of the electrodeposited metal fuel06-07-2012
20100207583CHARGING METHOD AND CHARGING/DISCHARGING METHOD OF LITHIUM ION SECONDARY BATTERY - The present invention relates to a charging method of a lithium ion secondary battery including, as a positive electrode active material, a lithium-containing composite oxide containing nickel and cobalt and having a layered crystal structure. The charging method includes a first step of charging the battery at a first current of 0.5 to 0.7 It until the charge voltage of the battery reaches a first upper limit voltage of 3.8 to 4.0 V; a second step of charging the battery, upon completion of the first step, at a second current smaller than the first current until the charge voltage of the battery reaches a second upper limit voltage greater than the first upper limit voltage; and a third step of charging the battery, upon completion of the second step, at the second upper limit voltage. This provides a charging method of a lithium ion secondary battery, the method capable of achieving both a shortened charging time and an improvement in charge/discharge cycle life characteristics.08-19-2010
20110057621METHOD OF CHARGING BATTERY PACK AND BATTERY PACK - A method of charging a battery pack that can prevent a battery or an external power source from being damaged due to a trickle charge current in order to improve battery safety, and the battery itself. The method of charging the battery pack includes determining whether a charge current exists, determining whether the charge current and a charge voltage are changed if determined that the charge current exists, determining whether the charge current is changed from a first current level to a second current level less than the first current level, and a present voltage level of the battery is less than a former voltage level if determined that the charge current and the charge voltage are changed, and maintaining the charge current at the second current level for a predetermined maintenance time if determined that the present voltage level of the battery is less than the former voltage level.03-10-2011
20110057620CHARGE/DISCHARGE PROTECTION CIRCUIT AND DISCHARGING PROTECTION METHOD - A charge/discharge protection circuit adapted in an electronic apparatus and a discharge protection method are provided. The charge/discharge protection circuit comprises a positive electrode, a ground for discharging, a switch module, a battery module, a negative electrode for charging, a sensing device and a control module. The battery module is electrically connected to the switch module and the ground to form a discharging path. The switch module is electrically connected to the positive electrode. The sensing device is electrically connected to the battery module and the negative electrode to form a charging path. The sensing device passively disconnects the charging path when the charging path is abnormal. The control module actively turns the switch open when the discharging path, the charging path or the battery module is abnormal.03-10-2011
20090251104CHARGE/DISCHARGE PROTECTION CIRCUIT, BATTERY PACK EMBEDDING THE CHARGE/DISCHARGE PROTECTION CIRCUIT, ELECTRONIC APPARATUS USING THE BATTERY PACK - A charge/discharge protection circuit that protects a secondary battery from overcharge, over-discharge, charge over-current, and discharge over-current is disclosed. The charge/discharge protection circuit includes an overcharge detection circuit, an over-discharge detection circuit, a charge over-current detection circuit, a discharge over-current detection circuit, a charge control FET that is turned off when overcharge is detected and when charge over-current is detected, a discharge control FET that is turned off when over-discharge is detected and when discharge over-current is detected, and a charger connection recovery circuit that controls on/off operations of the discharge control FET. When connection with a charger is established at a time over-discharge is detected and the discharge control FET is turned off, the discharge control FET is forcefully turned on after a first predetermined time elapses.10-08-2009
20100127663BATTERY SYSTEM WITH RELAYS - The battery system is provided with a battery 05-27-2010
20100194347BATTERY METHOD OF CHARGING AND DISCHARGING THE BATTERY AND CHARGE-DISCHARGE CONTROL DEVICE FOR THE BATTERY - A method of charging and discharging a battery that includes an anode. The anode includes silicon and is capable of inserting and extracting lithium. At the time of charge, the potential of the anode vs. lithium metal as a reference potential is 0.04 V or more. At the time of discharge, the potential of the anode vs. lithium metal as a reference potential is 1.4 V or less.08-05-2010
20110127966BATTERY ASSEMBLY - A battery assembly includes a bare cell; a protection circuit module electrically connected to the bare cell and having a first terminal portion; a holder case between the bare cell and the protection circuit module, the holder case having a second terminal portion, a terminal connection portion connected to the second terminal portion and an insulating support, wherein the protection circuit module is coupled to the holder case such that the first terminal portion is electrically coupled to the terminal connection portion.06-02-2011
20090273314BATTERY PACK AND CONTROL METHOD - A battery pack includes at least one secondary battery, a fuse, and a control section. The fuse is configured to cut off charge or discharge current of the secondary battery upon detection of an abnormality of the secondary battery. The control section is configured to detect the abnormality of the secondary battery, and to perform a fusion-cutting process of fusion-cutting the fuse in accordance with the result of the detection. Upon detection of the abnormality, the control section measures a first potential being the potential of a subsequent stage of the fuse and a second potential being the potential of the secondary battery. If it is found from the result of the measurement that the first potential and the second potential are equal, the control section determines that the fuse has not been fusion-cut by the fusion-cutting process, and stops the fusion-cutting process.11-05-2009
20090212741BATTERY CHARGING AND DISCHARGING BY USING A BI-DIRECTIONAL TRANSISTOR - A battery charger for an electronic device receives current limited power from an external power source, such as a Universal Serial Bus power interface. The battery charger can linearly regulate a charging current to an internal battery and limit the charging current so as not to demand current in excess of what the external power source can provide. A bi-directional pass element coupled between a system power terminal and the internal battery controls the charging current and effectively isolates the internal battery from a system load during charging of the battery while providing a low impedance path from the internal battery to the system load during discharging of the battery.08-27-2009
20090322283Method for battery capacity estimation - An embodiment contemplates a method for estimating a capacity of a battery. A state of charge is determined at a first instant of time and at a second instant of time. A difference in the state of charge is determined between the first instant of time and the second instant of time. A net coulomb flow is calculated between the first instant of time and the second instant of time. The battery capacity is determined as a function of the change in the state of charge and the net coulomb flow.12-31-2009
20090039832Mems based battery monitoring technical field - A battery protection and monitoring system includes a plurality of MAFET (Mechanically Actuated Field Effect Transistor) switches, wherein each MAFET switch among the MAFET switches is capable of switching from an open switch condition to a closed switch condition or vice versa, such that the plurality of MAFET switches are connectable to a battery. Such a system further includes one or more transistors associated with and which communicate electrically with at least one MAFET switch among the MAFET switches. A PPTC (Polymeric Positive Temperature Coefficient) device is also associated with the transistors and the MAFET switches, such that the PPTC device, the MAFET switches and the transistors operate in association with one another and the open switch condition or the closed switch condition of the plurality of MAFET switches to identify, monitor and thus prevent at least one dangerous condition associated with the battery.02-12-2009
20090039834Voltage Control System and Vehicle Comprising Voltage Control System - This voltage control system includes a power supply, an accumulator device which is capable of accumulating and discharging electrical power, a voltage control device which is constituted so as, when the electrical power supplied from the power supply is insufficient, to supplement it by discharging electrical power from the accumulator device, so as to keep a system voltage a predetermined value, and a control device which, when it has been recognized that the amount of electrical power required by one electrical power consumption device which is included in the system has decreased, reduces the rate of increase of the system voltage by implementing supply of electrical power from the power supply to the accumulator device.02-12-2009
20090039833Battery pack and connection system thereof - In a battery pack (02-12-2009
20090072792INTERNAL STATE ESTIMATING DEVICE OF SECONDARY BATTERY - An internal-state estimating device of a secondary battery has an electric current detecting means, a secondary-battery terminal voltage detecting means, a running state judging means, an electric-current random-noise impressing means and a secondary-battery internal-state estimating means. The electric current detecting means detects an electric current for a vehicle drive motor and a load-motor as one of a total current thereof and each current thereof. The running state judging means judges a substantially constant vehicle-speed running state of a motor vehicle. The electric-current random-noise impressing means superimposes a random noise on a load-motor electric current when the running state judging means judges the substantially constant vehicle-speed running state. The secondary-battery internal-state estimating means estimates an internal-state based on the terminal voltage and the current including the load-motor current and superimposed with the random noise at the substantially constant vehicle-speed running state.03-19-2009
20090072793Rechargeable battery assembly and power system using same - A rechargeable battery, battery set or battery pack having a circuit or a plurality of circuits for providing self-discharging thereof electrically connected in parallel are used to form rechargeable battery assemblies and electric power supply systems for use in electric and hybrid vehicles and the like.03-19-2009
20090072791Electric Storage Device - Electric storage device is provided which is capable of smoothly charging storage elements and reliably detecting an overvoltage of each of the storage elements. Electric storage device includes charging/discharging limiting circuit. Charging/discharging limiting circuit includes charge element, discharge element, control unit, charging current detection unit, voltage detection unit, valuable reference voltage source, and voltage comparison unit. A magnitude of valuable reference voltage source that is connected to an input terminal on a first side of voltage comparison unit is adjusted by charging current detection unit. Detection signal from the voltage detection unit is given to an input terminal on a second side of voltage comparison unit.03-19-2009
20110031932METHOD FOR RECOVERING AN ACCUMULATOR BATTERY AND APPARATUS FOR PERFORMING THEREOF - A method for recovering the accumulator battery, according to which method performed are the steps of: charging the accumulator battery that is carried out by passing therethrough the sequence of the rectangular current pulses which have a magnitude in the range of 400 to 480 A and a duty factor of 100 to 400; discharging the accumulator battery that is carried out in the pauses between the actions of the rectangular pulses for charging; and ceasing the cycles of charging with the rectangular pulses and discharging in the pauses therebetween when the measured amounts reach the values of the parameters defining the end of the process for charging the battery and recorded preliminary into the memory; then measuring the battery capacity by using the control discharge of the battery, and ceasing the control discharge when the voltage amount of the battery reaches the maximum permissible value set for this battery.02-10-2011
20090108808Battery Protection Mechanism - The present invention teaches methods and systems for detecting internal battery abnormalities during charging and discharging states. The embodiments of the invention includes a circuit for determining charging and/or discharging state of the battery, a circuit for sampling the battery voltage at sequential time points, a circuit for measuring the decline of the voltage, a counter for counting T04-30-2009
20110121787Battery Pack Capable of Preventing Battery Cell From High-Temperature Swelling and Method Thereof - A method for protecting a battery cell from high-temperature swelling, the method includes: sensing a temperature and a voltage of the battery cell; determining whether the sensed temperature of the battery cell exceeds a reference temperature; determining whether the sensed voltage of the battery cell exceeds a reference voltage, when the sensed temperature of the battery cell exceeds the reference temperature; and self-discharging the battery cell in a charge/discharge/standby mode when the sensed voltage of the battery cell exceeds the reference voltage.05-26-2011
20110241624HYSTERESIS SWITCH AND ELECTRICITY CHARGING MODULE USING THE SAME - An electricity charging module using a hysteresis switch includes a storage capacitor that preliminarily stores electrical energy supplied from an external power source, a charging unit for preventing over-charging or over-discharging through monitoring of the charging state of the rechargeable battery, and a hysteresis switch that has a larger turn-on voltage level than the turn-off voltage level, and located between the storage capacitor and the charging unit, thereby electrically connecting or disconnecting the storage capacitor with the charging unit. The hysteresis switch includes a first voltage dividing resistor pair that divides the voltage of an external power source by the resistance ratio of the first voltage dividing resistor pair, a second voltage dividing resistor pair whose one end is connected to a positive electrode terminal of the external power source, a first switching device whose control terminal is connected to the junction of the voltage dividing resistors of the second voltage dividing resistor pair, a second switching device whose control terminal is connected to the junction of the voltage dividing resistors of the first voltage dividing resistor pair, and a resistor that is connected to the junction between the first electrode terminal of the second switching device and the junction of the voltage dividing resistors of the first voltage dividing resistor pair.10-06-2011
20110109274CHARGE AND DISCHARGE CONTROL APPARATUS AND CHARGE AND DISCHARGE CONTROL METHOD FOR SECONDARY BATTERY - A charge and discharge control apparatus for a secondary battery, which uses feedforward control and feedback control in combination to execute charge and discharge control over the secondary battery, includes: a feedforward control unit that executes the feedforward control; a feedback control unit that executes the feedback control; and a control mode changing unit that changes a control mode between the feedforward control and the feedback control. The feedforward control unit controls at least one of a charging electric power and a discharging electric power on the basis of a predetermined permissible electric power value. When the permissible electric power value is lower than or equal to a predetermined value, the control mode changing unit prohibits the feedforward control, and changes the control mode so as to control at least one of the charging electric power and the discharging electric power through the feedback control.05-12-2011
20110115437BATTERY PACK - A battery pack includes a plurality of battery modules that house a plurality of unit cells in a case; and a protection circuit board that controls the charge and discharge of a plurality of the battery modules at once. The battery pack is highly flexible in series and parallel connection, high in assembly productivity and excellent in energy density.05-19-2011
20110084664METHOD AND APPARATUS OF STORED ENERGY MANAGEMENT IN BATTERY POWERED VEHICLES - A secondary battery and charging system are provided within an electric car or other electric drive vehicle. The secondary battery may, e.g., be owned by the electric utility. The battery is removable and can be charged and discharged independently of the primary car battery system. The utility can use the secondary battery to implement vehicle-to-grid functionality.04-14-2011
20090085519Protection circuit for battery pack, battery pack including the protection circuit, and method of operating the battery pack - A protection circuit controls charging/discharging of a battery pack in both a high temperature region and a low temperature region. The battery pack is protected from the risk of firing, burning or explosion which occurs in a high temperature region, to secure its safety. Furthermore, the charging and discharging of the battery pack is controlled in a low temperature region, to prevent incomplete charging and to increase the battery capacity efficiency.04-02-2009
20100164436Control Electronics for Li-ion Batteries - A storage voltage of a battery pack is controlled with control electronics. The storage voltage of a battery pack is sensed, and a discharge mechanism is triggered if the storage voltage is within a predetermined range of voltage, to thereby adjust the storage voltage of the battery pack to below the predetermined range of voltage, or if the storage voltage is at or above a predetermined voltage, to thereby adjust the storage voltage of the battery pack to below the predetermined voltage. Control electronics sense a storage voltage of a battery pack and trigger a discharge mechanism if the storage voltage is within a predetermined range of voltage, to thereby adjust the storage voltage of the battery pack to below the predetermined range of voltage, or if the storage voltage is at or above a predetermined voltage, to thereby adjust the storage voltage of the battery pack to below the predetermined voltage. The control electronics are coupled to an electronic device and a battery pack. The control electronics are either implemented into the electronic device or the battery pack, or in a separate control electronic device.07-01-2010
20090218987BATTERY MANAGEMENT CONTROL SYSTEM - A battery management control system includes: a battery, including: a battery cell; a battery cell monitor, detecting information on the battery cell; and a manager, controlling input/output of electric power to/from the battery cell based on the information; and a controller. One of the manager and the controller includes a first map specifying a first upper limit of the electric power and a second map specifying a second limit lower than the first limit. The controller calculates a first electric power value based on the first map and requests the first electric power value. When the manager controls the input/output of the electric power to/from the battery cell based on the first electric power value, and the information satisfies a deterioration determination condition, the manager determines that the battery cell is deteriorated, and the controller calculates a second electric power value based on the second map.09-03-2009
20100013437REDUNDANT BATTERY PROTECTION SYSTEM AND METHOD - An enhanced battery pack having an enhanced protection system addresses a potential weakness of the conventional protection system of a conventional battery pack. The enhanced protection system includes both the convention protection circuit and a redundant protection circuit. The redundant protection circuit is either a duplicate copy of the conventional protection circuit or is at least a functional equivalent of the conventional protection circuit. The components of the redundant protection circuit are electrically coupled into the enhanced battery pack in a parallel fashion with the corresponding components of the conventional protection circuit. Consequently, if one or more components of the conventional protection circuit fail due to defective conditions of the one or more components of the conventional protection circuit, the redundant protection circuit will still be operable to allow the enhanced battery pack to function while the enhanced protection system continues to protect the enhanced battery pack.01-21-2010
20090033285APPARATUS FOR ESTIMATING STATE OF CHARGE OF RECHARGEABLE BATTERY CHARGED BY VEHICLE-MOUNTED POWER GENERATION APPARATUS - The apparatus is for estimating a state of charge of a rechargeable battery charged by a vehicle-mounted power generation apparatus capable of generating a variable output voltage. The estimating apparatus includes a detecting function of detecting a charging/discharging current of the rechargeable battery, and an estimating function of making an estimation of the state of charge on the basis of relationship data defining the relationship among the output voltage, the state of charge, and a convergence value to which the charging/discharging current converges through transient behavior thereof in a state where variation of the output voltage is below a predetermined value after the output voltage is changed.02-05-2009
20120187913METHOD FOR CONTROLLING SECONDARY BATTERY AND POWER STORAGE DEVICE - An energy amount required for charging from the remaining capacity management value to the vicinity of a charge end and an energy amount required for discharging from the remaining capacity management value to the vicinity of a discharge end are calculated. A charge/discharge energy amount available for the secondary battery is predicted. A time required to complete the correction in the vicinity of the charge end and a time required to complete the correction in the vicinity of the discharge end are predicted based on the calculated energy amount and the predicted energy amount. A correction method having the shorter predicted time of the predicted times is selected. A state of charge of the secondary battery is controlled in such a manner that the remaining capacity management value of the secondary battery is corrected by the selected correction method.07-26-2012
20110101922CONTROL CIRCUIT OF SECONDARY BATTERY - A control circuit for a secondary battery is disclosed. The control circuit level shifts a voltage corresponding to charge or discharge current so that the level shifted voltage can be provided to an A/D converter.05-05-2011
20110101921BATTERY PACK - Battery pack circuits are provided. In one embodiment, the invention relates to a battery pack including a rechargeable battery including a first battery terminal and a second battery terminal coupled to a common terminal, a discharge control switch coupled between the first battery terminal and a first discharging terminal, a charge control switch coupled between the first discharging terminal and a first charging terminal, wherein the battery pack is configured to provide a current to a load coupled between the first discharging terminal and the common terminal, and a processing circuitry configured to charge and discharge the battery by controlling the discharge control switch and the charge control switch.05-05-2011
20110074356Charge and Discharge Circuit of Secondary Battery and Battery Pack - A charge and discharge circuit and a battery pack, both capable of voluntarily perform proper switching between a charge operation and a discharge operation of a secondary battery according to various situations, are provided. The charge and discharge circuit of a secondary battery is one capable of charging the secondary battery E03-31-2011
20110074357CONTROL SYSTEM FOR A FLOW CELL BATTERY - A controller for controlling a flow cell battery system is provided. The controller operates the flow cell battery system in a plurality of states including a plating state, a charging state and a discharge state.03-31-2011
20090027008Battery module and charge and discharge method thereof - A battery module and a charge/discharge method thereof are provided. The battery module comprises a cell, a charge/discharge circuit, a temperature sensing circuit and a charge/discharge speed controlling circuit. The charge/discharge circuit is coupled to the cell. The temperature sensing circuit further comprises a temperature coefficient (PTC) device used for sensing a temperature of the cell, so that the temperature sensing circuit outputs a first analog signal according to the temperature of the cell. The charge/discharge speed controlling circuit, according to the first analog signal, outputs a control signal to the charge/discharge circuit to adjust a charge/discharge speed of the cell.01-29-2009
20110025273MONITORING AND CONTROL SYSTEM FOR AN ELECTRICAL STORAGE SYSTEM OF A VEHICLE - A method of monitoring an electrical storage system. The method includes providing an electrical storage element defining a total storage capacity and having a state of charge cooperatively defining a total stored charge of the electrical storage element, determining a total stored charge value representative of the total stored charge of the electrical storage element, varying the total stored charge by charging the electrical storage element from the power source via an electrical charge or discharging the electrical storage element to the load via an electrical discharge, and updating the total stored charge value after varying the total stored charge.02-03-2011
20090015205HYBRID CONTROL DEVICE - In a hybrid control device performing cooling control of a secondary battery of a hybrid vehicle, the hybrid control device limiting the amount of charge/discharge of the secondary battery based on an air volume flow of a cooling fan cooling the secondary battery, an operation control mode of the secondary battery cooling fan is changed from an ordinary control mode to a power mode in which an air volume flow of the cooling fan is larger than in the ordinary control mode, whereby a limiting value of the amount of charge/discharge of the secondary battery is varied to expand the usable range of the secondary battery. Accordingly, when improvement of drive power performance is desired by an operator more than low noise within the vehicle, the amount of charge/discharge of the secondary battery is not limited by the cooling fan, and larger drive power performance is thus achieved.01-15-2009
20100295513BACKUP POWER SYSTEM MANAGEMENT - Systems and methods for management of a backup power system are described herein. At least one illustrative embodiment includes a backup power system configured to couple to a power source including a plurality of batteries, each comprising one or more cells, used to provide power if the power source fails, and processing logic coupled to the batteries and configured to monitor the state of each of the plurality of batteries and control the charging and discharging of each of the plurality of batteries. If the power source has not failed, the processing logic repeatedly and sequentially causes each battery to discharge while at least one of the remaining batteries remains fully charged, and monitors the power provided by the discharging battery. The processing logic determines the available energy stored in each fully charged battery based upon the power provided by the discharging battery during the time it takes to discharge.11-25-2010
20100085013EQUIPMENT SYSTEM COMPRISING A BATTERY-OPERATED ELECTRICAL DEVICE, A RECHARGEABLE BATTERY UNIT, AND A BATTERY CHARGER - An equipment system includes a battery unit (04-08-2010
20120169291CONTROLLER, CONTROLLER NETWORK AND CONTROL METHOD - A controller, a controller network and a method for controlling a charging/discharging that easily make SOC of secondary batteries close to a target value are provided. An ordering index including difference ΔSOCm=SOCt−SOCm between the target value SOCt of SOC (state of charge) and a calculated value SOCm of SOC as a main factor is reflected to an order of charging priority and an order of discharging priority of NaS battery. In addition, charging power is allocated to secondary batteries in descending manner of order of discharging priority and discharging power is allocated to the secondary batteries in descending manner order of discharging priority.07-05-2012
20120169289BATTERY MODULE - A battery module is disclosed. According to one aspect, the battery module includes: a plurality of batteries, and at least one thermistor inserted and fixed into a gap region between the plurality of batteries. The thermistor may be configured to have a variable width along an inserted direction where a size of the gap region changes. According to another aspect, a controller electrically connected to the at least one thermistor is disclosed. The controller is configured to control a charging and discharging operation of the plurality of batteries by receiving an output signal of the at least one thermistor. Accordingly, a temperature sensor is prevented from deviating its location, stability of the temperature sensor is improved, and installation of the temperature sensor is simplified.07-05-2012
20080203971Battery state monitoring circuit and battery device - An object of the present invention is to provide a battery state monitoring circuit and a battery device which are capable of normally operating when a charger (08-28-2008
20100320971Portable charging power system for battery-powered devices - A portable power system which contains a battery, which is intended for use as a power source for charging the batteries of portable electronics devices or for powering other electrical systems. It contains a USB connection for power input and a myriad of adapters for connecting the power system with the proprietary connectors of portable devices, as well as a screen to output system information to the user. The power system also contains a microcontroller which controls internal systems, input and output current and voltage, such that the power system may operate with any portable device as well as any type of USB port.12-23-2010
20110163722VEHICLE AND METHOD OF CHARGING BATTERY OF SAME - A method for charging a battery may include determining a degradation condition of the battery based on impedance parameters of the battery, altering a default charge profile for the battery based on the degradation condition, and charging the battery with the altered charge profile.07-07-2011
20110163723BATTERY PACK AND METHOD OF BATTERY PACK POWER MANAGEMENT - A battery pack and a method of power management for a battery pack, the battery pack comprising a rechargeable power source; a protection circuit electrically isolated from the rechargeable power source in a shutdown mode of the battery pack; and a kickstart circuit for electrically connecting the protection circuit to the rechargeable power source for providing electrical protection when the battery pack is in any one of a plurality of operating states.07-07-2011
20100283430SYSTEM AND METHOD FOR CHARGING AND DISCHARGING A Li-ION BATTERY PACK - An electrochemical battery system in one embodiment includes a plurality of first electrochemical cells, a memory in which command instructions are stored, and a processor configured to execute the command instructions to (i) evaluate each of the plurality of first electrochemical cells, and (ii) selectively connect a first of the plurality of first electrochemical cells to a power provider based upon the evaluation while selectively isolating a second of the plurality of first electrochemical cells from the power provider based upon the evaluation.11-11-2010
20110080141BATTERY CHARGE MANAGEMENT USING A SCHEDULING APPLICATION - According to some embodiments, battery charge management using a scheduling application is disclosed. A first parameter may be received from a scheduling application running on a mobile computing device having a battery pack. Based on at least the first parameter and battery pack data, a required charge percentage for the battery pack may be determined and the remaining capacity of the battery pack may be determined. If the remaining capacity of the battery pack is less than the required charge percentage, a charge termination voltage may be determined and the battery pack may be charged to the charge termination voltage.04-07-2011
20120262123Circuit Module and Battery Pack Including the Same - A circuit module of a battery pack includes a pattern resistor having conductivity; a temperature sensor that is adjacent to the pattern resistor and that senses a temperature of the pattern resistor; and a current detecting unit that is electrically connected to both ends of the pattern resistor, that is electrically connected to the temperature sensor, and that detects a current flowing in the pattern resistor based on a voltage across the ends of the pattern resistor and a temperature of the pattern resistor.10-18-2012
20120262124RESIDENTIAL ELECTRIC POWER STORAGE SYSTEM - A controller includes a data accumulation unit that obtains data of an amount of electric power consumed in a residence and accumulates the obtained data a representative pattern creation unit that creates a representative pattern based on the data accumulated in the data accumulation unit, the pattern representatively indicating how the electric power storage device varies in state of charge for its discharging period and a limit value determination unit that determines a limit value to correspond to the pattern.10-18-2012
20120062180POWER SUPPLY UNIT - A power supply unit includes: (A) a housing having a shape like a polygonal column; (B) a secondary battery cell contained in the housing; (C) charge/discharge control means contained in the housing and connected to the secondary battery cell; (D) at least one power input section disposed on the housing and connected to the charge/discharge control means; and (E) at least one power output section disposed on the housing and connected to the charge/discharge control means.03-15-2012
20110260691BATTERY CONTROLLER, BATTERY CONTROL METHOD AND PROGRAM - There is provided a battery controller including a storing unit which stores an upper limit voltage and a lower limit voltage, each defining a first voltage range in which a battery is charged/discharged, and a second upper limit voltage and a second lower limit voltage, each defining a second voltage range which is wider than the first voltage range, and a charge/discharge regulation unit which temporarily changes, when charge/discharge is performed in the first voltage range and permission for charge/discharge in the second voltage is received, setting of the battery such that charge/discharge is performed in the second voltage range.10-27-2011
20110260690ELECTRIC ACCUMULATORS HAVING SELF REGULATED BATTERY WITH INTEGRATED BI-DIRECTIONAL POWER MANAGEMENT AND PROTECTION - A power management system may comprise a generative power source, a main bus between the generative power source and electrical loads, a energy accumulator and a main bi directional power converter interposed between the main bus and the energy accumulator unit. The energy accumulator may comprise a plurality of energy storage blocks. The energy storage blocks may individually comprise energy storage units and control units with dedicated DC/DC bidirectional power converters.10-27-2011
20120146586BATTERY PACK AND CONTROL METHOD THEREFOR - A battery pack includes one or more cell blocks in which one or more secondary battery cells are connected in series and/or in parallel, and a control section for measuring a voltage of the one or more cell blocks to detect an abnormality of a cell block on the basis of a measurement result. The control section calculates a time differential of the voltage for the one or more cell blocks on the basis of the measured voltage, extracts a first time differential which is maximum and a second time differential which is minimum from the time differentials of the voltage for the one or more cell blocks, and determines that a cell block corresponding to the second time differential is abnormal in a case where a difference between the first time differential and the second time differential is less than a prescribed value.06-14-2012
20110080139Batteries, Battery Systems, Battery Submodules, Battery Operational Methods, Battery System Operational Methods, Battery Charging Methods, and Battery System Charging Methods - Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule-terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.04-07-2011
20100213900BATTERY PACK FOR CORDLESS POWER TOOLS - A battery pack which includes a battery pack electronic control circuit adapted to control an attached power tool and/or an attached charger. The battery pack includes additional protection circuits, methodologies and devices to protect against fault conditions within the pack, as the pack is operatively attached to and providing power to the power tool, and/or as they pack is operatively attached to and being charged by the charger.08-26-2010
20110187328WIRELESS POWER STORAGE DEVICE, SEMICONDUCTOR DEVICE INCLUDING THE WIRELESS POWER STORAGE DEVICE, AND METHOD FOR OPERATING THE SAME - To simplify charging of a battery in a power storage device which includes the battery. Further, to provide a wireless power storage device which can transmit and receive information without the task of replacing a battery for drive power supply, which becomes necessary when the battery depletes over time, being performed. An antenna circuit, a battery which is electrically connected to the antenna circuit via a rectifier circuit, and a load portion which is electrically connected to the battery are provided. The battery is charged when an electromagnetic wave received by the antenna circuit is input to the battery via the rectifier circuit, and discharged when electrical power which has been charged is supplied to the load portion. The battery is charged cumulatively, and the battery is discharged in pulses.08-04-2011
20110148359BATTERY, BATTERY SYSTEM AND METHOD FOR DETECTING ABNORMAL STATE OF BATTERY - There is provided a battery system including a battery having a luminescent layer on surfaces of an exterior member thereof, the luminescent layer containing a stress luminescent material that emits light in response to application of mechanical stress, a photodetector device that detects light emission by the stress luminescent material, and abnormality detection means for monitoring the light emission detected by the photodetector device and thus detecting an abnormality in the battery.06-23-2011
20100019729POWER SUPPLY SYSTEM AND VEHICLE WITH THE SYSTEM - A vehicle includes a charging unit receiving electric power from an external power source and externally charging a power storage unit. When a connector unit is coupled to the vehicle and a state ready for charging by the external power source is attained, a controller predicts degradation ratio of the power storage unit at the time point of completion of external charging based on degradation characteristic of the power storage unit in connection with SOC and battery temperature obtained in advance, and sets target state of charge of each power storage unit based on the battery temperatures so that the predicted degradation ratio does not exceed tolerable degradation ratio at the time point of completion of external charging. Then, the controller controls corresponding converters such that SOCs of power storage units attain the target states of charge.01-28-2010
20100019728Power supply system and vehicle including the same - A converter ECU Obtains a temperature increase start signal indicating start of temperature increase of a power storage unit from each sensor and ECU provided in a vehicle. In addition, the converter ECU obtains allowable electric power of the power storage unit from a battery ECU and obtains a power storage unit temperature from a temperature detection unit. When any of the obtained power storage unit temperatures is lower than a corresponding temperature lower limit value, the converter ECU generates a temperature increase instruction for the power storage unit of which temperature is lower than the corresponding temperature lower limit value, based on the temperature increase start signal. In addition, the converter ECU selects one control mode from among a plurality of control modes set in advance, based on the generated temperature increase instruction, and sets that mode as the control mode for a converter.01-28-2010
20110084665Method and apparatus of stored energy management in battery powered vehicles - A secondary battery and charging system are provided within an electric car or other electric drive vehicle. The secondary battery may, e.g., be owned by the electric utility. The battery is removeable and can be charged and discharged independently of the primary car battery system. The utility can use the secondary battery to implement vehicle-to-grid functionality.04-14-2011
20090167247VOLTAGE BALANCE CIRCUIT FOR RECHARGEABLE BATTERIES - Voltage balance circuit for dual cell rechargeable battery having a balancing circuit coupled to an integrated control circuit. The balancing circuit can be configured to charge and discharge current during a voltage balancing process allowing a higher charged cell to discharge or dissipate excess capacity to a lower charged cell. The integrated control circuit, having a plurality of modules, can be configured to output balancing directional and timing control signals for signaling the activation and deactivation of the voltage balancing process.07-02-2009
20100264881Battery Protection Circuit - A battery protection circuit with quickly testable design is disclosed. According to one embodiment, the battery protection circuit includes a battery voltage detection circuit configured to detect a battery voltage, output an effective trigger signal if the battery voltage reaches a voltage protection threshold, and output an ineffective trigger signal otherwise; a delay circuit configured to receive the trigger signal, output an effective status signal if the trigger signal is maintained effective continuously over a period of time, and outputs an ineffective status signal otherwise; a protection driver configured to receive the trigger signal and the status signal, enter a driving state when both the trigger signal and the status signal are effective, enter a non-driving state when both the trigger signal and the status signal are ineffective, and enter a ready driving state when the trigger signal is effective and the status signal is ineffective.10-21-2010
20090072790LOW SIDE N-CHANNEL FET PROTECTION CIRCUIT - The present invention relates to a battery protection circuit for protecting a plurality of batteries connected in series. The battery protection circuit includes: a controller for monitoring the batteries and outputting control signals based on predetermined conditions associated with the batteries; a first N-channel MOSFET and a second N-channel MOSFET coupled in a common-drain configuration in a low-side path, wherein at least one of the first and second N-channel MOSFETs turns off in response to the control signal received from the controller when at least one of the predetermined conditions is detected; and a gate protection circuit for preventing gate-to-source voltages of the first and second N-channel MOSFETs from exceeding a predetermined gate-to-source voltage level.03-19-2009
20110115436ACTIVE CELL AND MODULE BALANCING FOR BATTERIES OR OTHER POWER SUPPLIES - A system includes multiple power modules, each having multiple power cells coupled in series. Each power module has a charge that is based on charges of the power cells in that power module. The system also includes multiple active cell balancing circuits, each configured to substantially balance the charges of the power cells in an associated one of the power modules. The system further includes an active module balancing system configured to substantially balance the charges of the power modules by charging a first subset of the power modules and/or discharging a second subset of the power modules. The active module balancing system could include multiple module balancing circuits, each associated with one of the power modules and configured to charge or discharge its associated power module. A direct current (DC) bus can be configured to transport DC power between the module balancing circuits.05-19-2011
20120098498BATTERY PACK, SEMICONDUCTOR DEVICE, PORTABLE APPARATUS AND METHOD OF REPORTING FULL CHARGE - Disclosed is a battery pack including a secondary battery chargeable and dischargeable and providing a power from the secondary battery to an apparatus body that contains the battery pack, including, a residual capacity detecting unit that detects a residual capacity of the secondary battery; a full charge detecting unit that detects a full charge of the secondary battery based on the residual capacity; and a full charge reporting unit that reports that the full charge is detected to the apparatus body.04-26-2012
20100097035Life safety device with extended shelf life - A life safety device includes a battery assembly with a rechargeable battery. Extended shelf life is achieved by annually initiating an over-discharge protection mode in which a battery protection circuit prevents current flow from the battery. The life safety device remains in the over-discharge protection mode until the device is connected to a charging power source at the time of installation. The battery assembly then exits the protection mode and enters its normal mode of operation.04-22-2010
20090091295BALANCED CHARGING/DISCHARGING CIRCUIT FOR LITHIUM BATTERY SET - A balanced charging/discharging circuit for a lithium battery set, including a plurality of serially connected lithium batteries each having a positive electrode controlled by a corresponding control signal to selectively establish connection with a positive electrode of a battery charging circuit, and a negative electrode controlled by a corresponding control signal to selectively establish connection with a negative electrode of the battery charging circuit. Voltage of the positive and negative electrodes of each of the serially connected lithium batteries is transmitted to a corresponding terminal of a control circuit respectively so that the control circuit generates a corresponding transfer signal to the battery charging circuit and supplies the control signal to establish connection of a corresponding series of lithium batteries for charging. Battery sets arranged in series or in parallel can be charged with the maximum current and the service life is extended and charging time is shortened.04-09-2009
20090167249Method for verifying smart battery failures by measuring input charging voltage and associated systems - A method and associated system are disclosed for verifying charging failures for smart batteries by measuring input charging voltage and associated systems. In one embodiment, a determination is made whether or not a charging current is indicative of a battery failure by utilizing an analog-to-digital (A/D) port to measure the input charging voltage. As long as the measured input charging voltage is below the cell pack voltage or some set voltage value, whichever is higher, the BMU considers a charging current detection to be a false failure indication. If the measured charging voltage is above the cell pack voltage or a set voltage value, whichever is lower, the BMU considers the charging current detection to be a positive failure indication. The BMU can then disable the battery or implement other verification steps before disabling the battery, as desired.07-02-2009
20090021216Dual-Battery Charging And Discharging Method And Device And Portable Electronic Device Containing The Same - The device contains a first switch and a third switch for the charging and discharging of a main battery, and a second switch and a fourth switch for the charging and discharging of an auxiliary battery. The first switch or the second switch is turned on so as to connect and discharge the main battery or the auxiliary battery to a load circuit. The third switch or the fourth switch is turned on so as to charge the main battery or the auxiliary battery by an external power source. The present invention further provides a portable electronic device incorporating such a dual-battery charging and discharging method or device.01-22-2009
20110304302BATTERY PROTECTION CIRCUIT AND METHOD OF CONTROLLING THE SAME - A battery protection circuit and a method of controlling the same are disclosed. The battery protection circuit includes a first current path that includes a charge control switch and a discharge control switch, and a second current path in parallel to the first current path and has an electric resistance less than that of the first current path.12-15-2011
20090009135CHARGE PROTECTION CIRCUIT WITH TIMING FUNCTION - A charge protection circuit with a timing function is disclosed. The circuit includes a charge protection module constituting of a second switch, a second capacitor and a control integrated circuit (IC). The second switch Q01-08-2009
20120306451SECONDARY CELL PROTECTION CIRCUIT AND BATTERY - A secondary cell protection circuit configured to protect plural secondary cells connected in series is disclosed that includes plural switching parts configured to be connected in parallel with the secondary cells respectively; and a charge controller configured to turn on the switching part connected to the secondary cell of which cell voltage is greater than or equal to a return voltage, and to turn off the switching part when all cell voltages of the secondary cells become greater than or equal to the return voltage, when the secondary cells are being charged.12-06-2012
20120306450Semiconductor Integrated Circuit Having Battery Control Function and Operation Method Thereof - A semiconductor integrated circuit is capable of being supplied with battery current information and battery voltage information. The semiconductor integrated circuit includes a memory function, a current integrating function, a voltage-based state of charge operating function, a current-based state of charge operating function, a comparison determination function, a correcting function, and a resistance deterioration coefficient output function. The memory function stores the relation between a state of charge of a battery and an internal resistance deterioration coefficient thereof. The full charge capacity outputted from the correcting function and the internal resistance deterioration coefficient outputted from the resistance deterioration coefficient output function are stored in the memory function when a voltage-based state of charge and a current-based state of charge compared by the comparison determination function are determined to substantially coincide with each other.12-06-2012
20080315838METHOD OF MEASURING THE BATTERY LEVEL IN A MOBILE TELEPHONE - Measuring the voltage level of a mobile telephone battery during a charging operation involves disabling the charge temporarily so that the battery rapidly enters discharge mode. The discharge mode voltage is more representative of the true battery charge level, so that the present invention can be implemented to provide a battery charge level display that is accurate even when the telephone is being charged.12-25-2008
20110050176BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided are a battery state monitoring circuit and a battery device that are capable of reliably controlling charge by a charger even if a voltage of a secondary battery drops to around 0 V. In the battery device provided with the battery state monitoring circuit, respective gate voltages of a P-type metal oxide semiconductor (PMOS) transistor and an N-type metal oxide semiconductor (NMOS) transistor, which together form a voltage detection circuit for detecting a voltage of around 0 V of the secondary battery, are applied by a voltage dividing resistor circuit that is connected across terminals of the secondary battery.03-03-2011
20110050175Battery Pack - A battery pack that can avoid an abnormal condition caused by heat generation associated with water adhesion to a connector part and a function stopping method of the battery pack are provided. A battery controller determines an abnormality and executes an operation of interrupting a charge/discharge path for a battery set formed by a charge/discharge circuit, when a detected temperature of a connector is equal to or more than a first threshold, and also a discharge current is equal to or more than a second threshold and/or a difference between the detected temperature of the connector and a detected temperature of another part (a discharge protection switch, a charge protection switch, and the battery set) is equal to or more than a third threshold.03-03-2011
20110050174APPARATUS FOR TRANSFERRING ENERGY USING ONBOARD POWER ELECTRONICS AND METHOD OF MANUFACTURING SAME - An apparatus includes an energy storage device, a bi-directional DC-to-DC voltage converter coupled to the energy storage device, and an input device. A voltage bus is coupled to the bi-directional DC-to-DC voltage converter and to the input device. The apparatus also includes a controller configured to control the bi-directional DC-to-DC voltage converter to convert a charging energy on the voltage bus into a charging energy suitable for charging the energy storage device during a charging operation and to monitor a voltage of the energy storage device during the charging operation. The controller is also configured to compare the monitored voltage with a threshold value during the charging operation and, after the threshold value has been crossed, control the bi-directional DC-to-DC voltage converter to convert the charging energy into a charging energy configured to maintain the voltage of the energy storage device at a pre-determined value.03-03-2011
20090027009System and method for battery management - A method and system for managing a plurality of batteries and useable by way of example with a partially or completely electrically powered vehicle (EV) includes a plurality of monitor modules each coupled to at least one of the plurality of batteries and configured to monitor the voltage and temperature thereof, a master controller, and a non-conductive fiber optic network coupling the plurality of monitor modules to one another and to the master controller. The master controller commands the transmission of battery voltage and temperature information from the plurality of monitor modules over the network, receives battery voltage and temperature information from the monitor modules over the network, and perform calculations based on the received information to determine if any of the plurality of batteries require balancing measures, and based thereon, commands the corresponding monitor modules to implement balancing measures over the network.01-29-2009
20120043941AUTOMATIC BATTERY SAFETY PROTECTION SYSTEM - The present invention provides an automatic battery safety protection system, which includes at least one battery pack, a Micro-Electro-Mechanical System (MEMS), a battery management system and a power supply management system. The MEMS controls the battery pack to put it in a charge mode, a discharge mode or a sleep mode, and detects an environmental situation and transfers a detection result as an electronic signal. The battery management system is connected to the battery pack and supplies power to the battery pack. The power supply management system supplies power to the battery management system according to the electronic signal and controls the battery management system to make the battery pack take a corresponding action. The protection system of the present invention can achieve practical improvements such as protecting the battery pack system, extending the lifespan of the battery, and avoiding a false action.02-23-2012
20110156655BATTERY PACK AND METHOD OF CHARGING BATTERY PACK - A battery pack and a method of charging the same are disclosed. The battery pack is chargeable by a variety of chargers which have different output voltages.06-30-2011
20110156657Method For Managing Power Limits For A Battery - A method for managing power limits for a battery includes the step of increasing a minimum operating state of charge after an initial power capability has decreased to the point where a predefined full discharge power is not available at an initial minimum operating state of charge. The increased minimum operating state of charge can be chosen such that the full discharge power is available. The increased minimum state of charge may not be chosen to provide the full discharge power if the increased minimum state of charge is greater than a maximum low limit state of charge.06-30-2011
20110156656OVERCHARGE PROTECTION CIRCUIT, BATTERY PACK, AND CHARGING SYSTEM - An overcharge protection circuit includes: a voltage detection portion which detects a terminal voltage of a secondary battery; and a control portion, having a normal state in which the secondary battery can be charged, a judgment execution state in which judgement as to whether the secondary battery is in an overcharged state is performed, and a first charging prohibition state in which charging of the secondary battery is prohibited, wherein in the normal state, when a terminal voltage detected by the voltage detection portion exceeds a first overcharge detection voltage set in advance as a voltage at which charging of the secondary battery is to be prohibited, the control portion transitions to the judgment execution state, in the judgment execution state, when an accumulated value, after the judgment execution state is established, of a time interval during which the terminal voltage detected by the voltage detection portion exceeds the first overcharge detection voltage, exceeds a first reference time set in advance, the control portion transitions to the first charging prohibition state, and in the judgment execution state, when the terminal voltage detected by the voltage detection portion falls below a judgment cancellation voltage lower than the first overcharge detection voltage, the control portion transitions to the normal state and enables charging of the secondary battery.06-30-2011
20110156654PROTECTION CIRCUIT FOR BATTERY PACK - A protection circuit of a battery pack capable of detecting the error of a charging device from the battery pack. The protection circuit of the battery pack having a battery cell charged by a charging device, the protection circuit including a charge switch coupled to a high current path (HCP), the charge switch disposed between the battery cell and the charging device charging the battery cell and a controller sensing a voltage or a current of the charging device during a charge stop period stopping a charging of the battery cell and determining whether an error of the charging device occurs according to the voltage or the current of the charging device.06-30-2011
20110156653SOLAR POWER SUPPLY SYSTEM AND DRIVING METHOD OF SAME - A solar power supply system includes a load device, a solar panel that converts light energy into electrical energy, an energy storage device storing the electrical energy from the solar panel, a charge/discharge control device, and a transformer device. The charge/discharge control device selects one of the energy storage device and the solar panel as an operation power supply to the charge/discharge control device and generates an output voltage. The transformer device transforms the output voltage of the charge/discharge control device into a driving voltage to drive the load device. A feedback circuit generates a feedback signal according to an actual power consumption of the load device. A power detector detects an instant output power of the charge/discharge control device. A power regulator minimizes the output power of the charge/discharge control device according to the instant output power of the charge/discharge control device and the actual power consumption of the load device.06-30-2011
20120056596REMAINING BATTERY POWER CALCULATION CIRCUIT - A remaining battery power calculation circuit includes: a detection unit configured to detect an output voltage of a battery; a data storage unit configured to store data in an associated manner with each of a plurality of current values for charge or discharge of the battery, the data indicating a relationship between the output voltage and a ratio of remaining power of the battery to a capacity of the battery in a case where the battery is charged or discharged with each of the plurality of current values; and a first calculation unit configured to calculate a charging/discharging current of the battery based on the data and the output voltage.03-08-2012
20120176096Method for Controlling at Least One Operating Parameter that Influences the Aging State of an Electrical Energy Store in an Open-Loop or Closed-Loop Manner - A method is provided for the open-loop or closed-loop control of at least one operating parameter of an electric energy accumulator influencing the aging state of the electric energy accumulator. The method determines the actual aging state of the electric energy accumulator, compares the actual aging state with a target aging state predefined for the momentary age of the energy accumulator, and restricts an operating parameter range permitted for the at least one operating parameter if the actual aging state is worse than the target aging state.07-12-2012
20100194345MULTI-CELL BATTERY PACK PROTECTION CIRCUIT - A voltage detection circuit can include a status sensing network and a comparing network. The status sensing network can simultaneously detect a cell voltage for each battery cell of a plurality of battery cells. The comparing network can simultaneously compare the detected cell voltages with a predetermined voltage threshold by comparing the maximum of the cell voltages with a first (high-voltage) threshold, and by comparing the minimum of the cell voltages with a second (low-voltage) threshold. The comparing network can also generate an indication signal when a cell voltage does not satisfy the respective voltage threshold.08-05-2010
20120056593CHARGE/DISCHARGE CONTROL CIRCUIT AND BATTERY DEVICE - Provided is a battery device including, in a charge/discharge protection circuit for controlling charge/discharge of a secondary battery by a single bidirectionally conductive field effect transistor, a charge/discharge control circuit with which the layout area is reduced and a leakage current of the bidirectionally conductive field effect transistor is reduced to perform stable operation. The charge/discharge control circuit includes: a switch circuit for controlling a gate of the bidirectionally conductive field effect transistor based on an output of a control circuit for controlling the charge/discharge of the secondary battery; and two Schottky barrier diodes for preventing back-flow of a charge current and a discharge current. The first Schottky barrier diode has a cathode connected to a drain of the bidirectionally conductive field effect transistor, and the second Schottky barrier diode has a cathode connected to a source of the bidirectionally conductive field effect transistor.03-08-2012
20120056592CHARGE/DISCHARGE CONTROL CIRCUIT AND BATTERY DEVICE - Provided is a battery device for controlling charge/discharge of a secondary battery by a single bidirectionally conductive field effect transistor, a charge/discharge control circuit with which a leakage current of the bidirectionally conductive field effect transistor is reduced to perform stable operation. The charge/discharge control circuit includes: a switch circuit for controlling a gate of the bidirectionally conductive field effect transistor based on an output of a control circuit for controlling the charge/discharge of the secondary battery; and two MOS transistors for preventing back-flow of a charge current and a discharge current. The first MOS transistor has a drain and a back gate which are connected to each other, and a source connected to a drain of the bidirectionally conductive field effect transistor. The second MOS transistor has a drain and a back gate which are connected to each other, and a source connected to a source of the bidirectionally conductive field effect transistor.03-08-2012
20120056595ELECTRIC CIRCUIT, CHARGE CONTROL DEVICE, CHARGE SYSTEM, AND CONTROL METHOD - There is provided an electric circuit including a semiconductor switch that is inserted in a positive side power line; and converting means for converting an input voltage input to an input side terminal to a predetermined output voltage and for outputting the output voltage from an output side terminal, wherein the output side negative terminal of the converting means is connected to the positive side power line, and the output side positive terminal of the converting means is connected to a terminal that controls an opening and closing of the semiconductor switch.03-08-2012
20120056594CONTROL DEVICE AND METHOD AND POWER SUPPLY DEVICE - A control device includes a controller causing a plurality of cell blocks each configured of one or plurality of secondary battery cells and connected in series to be charged with a cell balance, and the controller includes a detector detecting a voltage of each of the cell blocks, an updater sequentially updating a maximum voltage of the detected voltage of each of the cell blocks, and a discharger discharging a cell block among the plurality of cell blocks, the cell block with a voltage range between the detected voltage and the updated maximum voltage within a discharge target voltage range defined in advance.03-08-2012
20090121683BACK-GATE VOLTAGE GENERATOR CIRCUIT, FOUR-TERMINAL BACK GATE SWITCHING FET, AND CHARGE AND DISCHARGE PROTECTION CIRCUIT USING SAME - A back-gate voltage generator circuit generating a back-gate voltage of a four-terminal back gate switching MOSFET for charge and discharge control is disclosed. The back-gate voltage generator circuit includes first and second n-type MOSFETs connected in series through a common source electrode. A voltage at the common source electrode of the first and second n-type MOSFETS connected in series serves as the back-gate voltage of the four-terminal back gate switching MOSFET, and the back-gate voltage is used as a reference voltage for generating signals for controlling the first and second n-type MOSFETS.05-14-2009
20090167248State of Charge Equalizing Device and Assembled Battery System Including Same - A state-of-charge equalizing device equalizes the state of charge of each of cells connected in series to form an assembled battery, and comprises charging/discharging circuits connected in parallel to the respective cells to discharge and/or charge the respective cells, voltage measurement circuits connected to the respective charging/discharging circuits to measure the voltages across the respective cells, and a control circuit. The control circuit comprises a unit calculating an equalization target voltage based on the measured voltages before the charge or discharge starts, a unit starting discharging/charging the cells having a voltage thereacross different from the target voltage, a unit correcting the target voltage to thereby calculate a corrected equalization target voltage for each of those cells based on the difference between the measured voltages before and at a certain time period after the charging/discharging, and a unit ending the discharging/charging when the measured voltage reaches the corrected target voltage.07-02-2009
20120013306ELECTRICAL ENERGY STORAGE SYSTEMS AND METHODS - Systems and methods for determining a state of charge (SOC) of an electrical energy storage device are disclosed. In one embodiment, a system is provided for determining the SOC of an electrical energy storage device comprises at least one memristor coupled in series with the electrical energy storage device to monitor charge current and discharge current of the electrical energy storage device. The system also includes a readout controller configured to determine the SOC of the electrical energy storage device based on the resistance of the memristor.01-19-2012
20120206105CHARGE-DISCHARGE CONTROL CIRCUIT, SEMICONDUCTOR INTEGRATED CIRCUIT, METHOD OF CONTROLLING CHARGING AND DISCHARGING, AND CHARGING AND DISCHARGING CONTROL PROGRAM - A charge-discharge control circuit includes a cell balance detection circuit that detects that a voltage of a cell reaches a predetermined voltage; a memory circuit that stores the cell that reaches the predetermined voltage first among plural of the cells; bypass circuits respectively connected to the plural cells in parallel, each of the bypass circuits including a switch unit for bypassing the current that flows through the corresponding cell when charging; and a control circuit that controls the switch units, wherein the control circuit controls the switch unit based on the cell stored in the memory circuit so that an ON/OFF status of the switch unit is maintained from a start to an end of a next charging operation subsequent to a charging operation during which the cell is stored in the memory circuit.08-16-2012
20120206104ELECTRIC POWER SUPPLY SYSTEM - An alternating-current power line is wired in a building for supplying alternating-current electricity to an electric load. A bidirectional power converter converts bilaterally between alternating-current electricity and direct-current electricity. A power storage unit is connected to the alternating-current power line through the bidirectional power converter. The power storage unit is charged with electricity from the alternating-current power line and discharges direct-current electricity into the alternating-current power line. A charge-and-discharge unit charges a vehicular power accumulating device with alternating-current electricity supplied from the alternating-current power line through a connecting terminal and discharges electricity outputted as alternating-current electricity from the vehicle to the connecting terminal. A power converter converts alternating-current electricity outputted from the vehicle through the connecting terminal into direct-current electricity and discharges the converted direct-current electricity through the bidirectional power converter into the alternating-current power line.08-16-2012
20120025784Advanced Charge Balancing System for Lithium Batteries - A method of balancing the terminal voltage across individual and multiple battery cells is described. To employ the method a lithium ion battery having at least two battery cells is provided along with an energy dispersing unit capable of taking energy from individual cells, stepping down individual voltages, and redirecting the voltage to the lowest voltage battery cell. The terminal voltage of individual cells is then monitored during discharge, and discharging cells having a greater terminal voltage are discharged in advance of cells having less terminal voltage. Thereafter establishing a charge algorithm wherein a differential curve is established under specific conditions, and charging current is applied complimentary to the differential curve.02-02-2012
20110080140BATTERY PACK - A battery pack includes a current control device that has a thermostat and a positive temperature coefficient device whose resistance increases as the temperature rises connected in parallel, the current control device being inserted into a discharge current path of a battery cell and a protection circuit that detects a voltage of the battery cell, detects an overcharge and over-discharge of the battery cell, and generates an overcharge detection signal and an over-discharge detection signal. In a normal state, a discharge current of the battery cell flows through the thermostat of the current control device. When the discharge current is large enough to damage the battery cell, the thermostat turns off and the discharge current flows through the positive temperature coefficient device. When the positive temperature coefficient device produces heat, a resistance of the positive temperature coefficient device increases and the discharge current is limited or interrupted.04-07-2011
20110089906BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided are a battery state monitoring circuit with a small number of terminals and a battery device including the battery state monitoring circuit. An output of an overcharge detection circuit (04-21-2011
20120249078BATTERY SYSTEM AND ENERGY STORAGE SYSTEM INCLUDING THE SAME - A battery system and an energy storage system including a battery module. The battery system includes at least one battery module that may perform charging and discharging, and a battery management unit that controls the charging and the discharging of the battery module. The battery management unit varies a charge limit value for stopping the charging of the battery module and a discharge limit value for stopping the discharging of the battery module. Accordingly, a lifetime of the battery module is extended.10-04-2012
20120249077BATTERY SYSTEM FOR ELECTRICITY TRANSPORT VESSEL - A battery or plurality of batteries adapted for to be installed in a transport vessel used as a method of transporting a large quantity of electricity. The battery system can be one rechargeable battery, or plurality placed rechargeable batteries installed for the life of the batteries. The vessel may include one battery, or many batteries, integrated into a ship, boat, or any other floating device, and, in case of more than one battery, are electrically connected to each other by wire or cable. There are one or more inlet/outlets that allow charging/discharging of the batteries. The batteries can be of any size, from the size of a shipping crate battery to larger batteries, the size of a cargo ship or larger. The electricity could be used for the same purposes as electricity transported through electric wires.10-04-2012
20120161713VEHICLE ENERGY HARVESTING APPARATUS AND ENERGY MANAGEMENT METHOD THEREOF - Disclosed herein is a vehicle energy harvesting apparatus. The vehicle energy harvesting apparatus includes a battery unit, an energy collection unit, an external charging interface, and an energy management unit. The battery unit is formed in a vehicle. The energy collection unit is provided on one side of the vehicle, and configured to generate renewable power by collecting renewable energy. The external charging interface is formed on one side of the vehicle in order to exchange power between the battery unit and a smart grid. The energy management unit is configured to perform control such that the renewable power of the energy collection unit is stored in the battery unit, and such that power is exchanged between the battery unit and the smart grid using the external charging interface.06-28-2012
20100207581Charging controller - A charging controller connected to at least one of secondary cells and detachably connected to a charger or a cell driver, the charging controller including: a charging amount control circuit detecting a cell voltage of each secondary cell and outputting a charging control signal for instructing the charger to reduce a charging current when the detected cell voltage exceeds the target voltage; and a protection circuit detecting a cell voltage of each secondary cell and cutting off a current path from the charger to the secondary cell when the detected cell voltage exceeds the upper limit voltage, the protection circuit operating by using the secondary cell as a power source while at least the charger is not connected. In the charging controller, while neither the charger nor the cell driver are connected, the charging amount control circuit does not operate.08-19-2010
20120133332STORAGE CAPACITY MANAGEMENT SYSTEM - A storage capacity management system includes an upper limit terminal voltage inducing part for inducing an upper limit terminal voltage which is a terminal voltage when the storage capacity of the battery is an upper limit storage capacity, a lower limit terminal voltage inducing part for inducing a lower limit terminal voltage which is a terminal voltage when the storage capacity of the battery is a lower limit storage capacity, an upper and lower limit voltage width calculating part for calculating an upper and lower limit voltage width by subtracting the lower limit terminal voltage from the upper limit terminal voltage, an intermediate voltage difference calculating part for calculating an intermediate voltage difference by subtracting the lower limit terminal voltage from a terminal voltage of the battery, an upper and lower limit voltage ratio calculating part for calculating an upper and lower limit voltage difference which is a ratio of the intermediate voltage difference to the upper and lower limit voltage width, an intermediate determination voltage ratio inducing part for inducing an intermediate determination voltage ratio according to upper and lower limit capacities of the battery, a voltage ratio comparing part for comparing the upper and lower voltage ratio with the intermediate determination voltage ratio, and an intermediate storage capacity inducing part for inducing an intermediate storage capacity based on the upper limit storage capacity, the lower limit storage capacity and the intermediate determination voltage ratio when the results of the comparison by the voltage ratio comparing part satisfy a predetermined condition. Consequently, the storage capacity of the battery can be managed with high accuracy.05-31-2012
20120133333ENERGY SYSTEM - An energy system having a plurality of storage batteries and renewable power supplies includes an information processor. Each of the storage batteries is individually set to a maximum SOC representing a charging limit and a minimum SOC representing a discharging limit. Each of the storage batteries is chargeable and dischargeable under the control of an external device and is capable of measuring SOC values. The information processor controls charging and discharging processes of the storage batteries individually to keep the storage batteries charged until SOC values acquired from the storage batteries reach the maximum SOC when the storage batteries are charged and to keep the storage batteries discharged until SOC values acquired from the storage batteries reach the minimum SOC when the storage batteries are discharged.05-31-2012
20090058365Secondary battery protection semiconductor device - A disclosed secondary battery protection semiconductor device protects the secondary battery by detecting values of at least plural detection items corresponding to the secondary battery including the detection items of overcharge, overdischarge, charge overcurrent, discharge overcurrent, short-circuit current, and overheat; comparing the detected values with corresponding detection levels that are determined beforehand for each of the detection items; and based on the comparison results, turning on/off a discharge control transistor and a charge control transistor that are series-connected to the secondary battery. Among the plural detection items, a first value of a first detection item is detected, and a detection level of a second detection item is changed in accordance with the first value.03-05-2009
20090058364Electric power supply control system for vehicle - An electric power supply control system has a battery, a vehicular alternator, large electric power systems, operation limitation target systems, and a battery condition management device. Each large electric power system generates a rush current when initiating its operation by electric power supplied. Each operation limitation target system is capable of limiting its operation for a demand during the operation of the large electric power systems. The large electric power systems and the operation limitation target systems change their operation conditions based on an allowable electric power (or an allowable electric current) supplied from the battery condition management device in order to maintain a terminal voltage of the battery which is not less than a limitation voltage.03-05-2009
20090058363BATTERY CHARGE CONTROL CIRCUIT - A DC-DC voltage down-converter for an electronic device supplied by a battery and having a bus interface for the interconnection with another electronic device capable of supplying electric power is provided. The DC-DC voltage down-converter includes a terminal coupled to a voltage supply line of the bus interface and operable to receive a input current from the another electronic device. The DC-DC voltage down-converter further includes an electric energy storage element coupled between the battery and the terminal, the electric energy storage element being operable to storage/release electric energy and a drive circuit arranged to control the storage/release of the electric energy storage element, so as to cause an electric power generated by the input current supplied by the another electronic device through the voltage supply line to re-charge the battery. The DC-DC voltage down-converter still further includes a input current feedback control circuit coupled to the terminal and arranged to monitor a value of the input current and generate a corresponding input current indication; the drive circuit configured to control the storage/release of the electric energy storage element according to the input current indication.03-05-2009
20090058362PROTECTION CIRCUIT FOR BATTERY PACK AND BATTERY PACK HAVING THE SAME - A protection circuit for a battery pack is provided in which a positive temperature coefficient device is electrically connected in a current path of the battery pack to control current flowing through the current path in response to an internal temperature of the battery pack. The protection circuit for a battery pack includes a charging and discharging control unit located on a current path of the battery pack. A first protection circuit controls the charging and discharging control unit in response to a charged state of the battery pack. A second protection circuit prevents overcurrent from flowing through the current path of the battery pack. A positive temperature coefficient is electrically connected in the current path of the battery pack. The battery pack may include a bare cell or battery group including one or more secondary batteries.03-05-2009
20120169290ELECTRICITY STORAGE SYSTEM - There is provided an electricity storage system which comprises an electricity storage device, a charge and discharge switch device placed to be connected to the electricity storage device, a control block which is a charge and discharge control device which controls charging from a power supply and discharging from the electricity storage device to an external load, an electricity storage device breaker provided between the electricity storage device and the charge and discharge switch device, storage battery state detection units which detect the storage battery state information at a connection point between the electricity storage device and the electricity storage device breaker, and the detection units which detect the state information at a connection point between the electricity storage device breaker and the charge and discharge switch device.07-05-2012
20120169288SECONDARY BATTERY SYSTEM - A secondary battery system includes a secondary battery containing a positive electrode active material configured from lithium manganate having a spinel crystal structure and a negative electrode active material which undergoes a phase change when charging or discharging. The secondary battery system includes a dQ/dV calculation means (battery controller) for calculating dQ/dV, which is the ratio of the change (dQ) in the accumulated energy (Q) in the secondary battery with respect to the change (dV) in the voltage (V) of the secondary battery when charging or discharging the secondary battery, so as to determine the state of the secondary battery system on the basis of the peaks appearing on the V−dQ/dV curve, which expresses the relationship between the voltage (V) and dQ/dV.07-05-2012
20120212184METHOD FOR CHARGING OR DISCHARGING A BATTERY IN ORDER TO DETERMINE THE END OF CHARGING OR DISCHARGING ON THE BASIS OF MEASUREMENTS OF CURRENT AND TEMPERATURE - The method for charging or discharging a battery comprises measurement of the voltage at the terminals of the battery and comparison of the measured voltage with an end of charging or discharging voltage threshold. The method also comprises measurement of a temperature representative of the temperature of the battery and measurement of the current flowing in the battery to form a pair of measurements. The voltage threshold is then determined according to the pair of measurements. Charging or discharging of the battery is stopped when the voltage threshold is reached.08-23-2012
20100052618BATTERY CAPACITY CONTROLLER - A battery capacity controller includes a battery capacity estimating part that estimates the battery capacity of a battery in which an internal resistance is increased in accordance with the decrease of the battery capacity in the vicinity of a prescribed lower limit battery capacity and a battery capacity correcting part that changes, during the discharge of the battery, an estimated battery capacity estimated by the battery capacity estimating part to a proper value in a lower limit side when an internal resistance difference as a difference between the internal resistance value of the battery and the internal resistance value of the battery at the time of the lower limit battery capacity is a prescribed value or lower.03-04-2010
20120176094BATTERY CHARGE AND DISCHARGE CONTROL APPARATUS AND METHOD FOR CONTROLLING BATTERY CHARGE AND DISCHARGE - A master controller of a battery charge and discharge control apparatus is a device performing charge and discharge control on a group of a predetermined number of battery arrays, the battery arrays being connected together in parallel. The master controller acquires an entire charge or discharge instruction intended for the entire battery array group, starts charging or discharging each of the battery arrays at a uniform charge or discharge power value, acquires a charge or discharge status of each of the battery arrays after the beginning of the charge or discharge and compares the charge or discharge status with a predetermined charge or discharge set value for the entire battery array group, and changes the charge or discharge power value of each of the battery arrays based on a result of the comparison.07-12-2012
20120176092BATTERY CAPACITY DETECTION DEVICE OF LITHIUM ION RECHARGEABLE BATTERY - A device detects a battery capacity of a lithium ion rechargeable battery having at least one inflection point or more within a range of 10% to 90% of the SOC thereof. The inflection point indicates a change of a correlation between a battery voltage and the SOC of the battery. The device fetches a battery capacity corresponding to an inflection point from a capacity table, and sets the fetched battery-capacity as a first battery capacity when an inflection point detection section detects the inflection point. A current integration section integrates a current from the time to detect the inflection point to the time when the battery voltage detected by a voltage detection section reaches a full charging voltage. The integrated current is used as a second battery capacity. The device adds the first and second battery capacities, and uses the added result as a full charging capacity of the battery.07-12-2012
20120176093METHOD FOR CONTROLLING THE CHARGING OR DISCHARGING PROCESS OF A SECONDARY BATTERY WITH AUXILIARY ELECTRODE - The present invention includes three-dimensional secondary battery cells comprising an electrolyte, a cathode, an anode, and an auxiliary electrode. The cathode, the anode, and the auxiliary electrode have a surface in contact with the electrolyte. The anode and the cathode are electrolytically coupled. The auxiliary electrode is electrolytically coupled and electrically coupled to at least one of the anode or the cathode. Electrically coupled means directly or indirectly connected in series by wires, traces or other connecting elements. The average distance between the surface of the auxiliary electrode and the surface of the coupled cathode or the coupled anode is between about 1 micron and about 10,000 microns. The average distance means the average of the shortest path for ion transfer from every point on the coupled cathode or anode to the auxiliary electrode.07-12-2012
20120074911STATE OF CHARGE OPTIMIZING DEVICE AND ASSEMBLED BATTERY SYSTEM INCLUDING SAME - A state of charge optimizing device according to the present invention optimizes a state of charge of each of a plurality of cells which are connected in series to form an assembled battery, and conducts the optimization by discharging or charging a part or all of the plurality of cells so that the differences between the amount of charge after the optimization and the amount of charge in a predetermined state of charge become uniform.03-29-2012
20100007311BATTERY MODULE, PACK OF MODULES - The application concerns a battery module, comprising cells, two external terminals, a message communication infrastructure, a module control unit comprising a message processing unit, connected to the infrastructure to send and receive messages. According to the application, at least two of the message systems chosen from among: 01-14-2010
20120313588OCCUPANCY SENSOR WITH CONDITIONAL ENERGY TRANSFER FROM LOAD - An occupancy sensor may control a load in response to its own operating conditions. In some embodiments, the occupancy sensor may include an energy storage device to operate the occupancy sensor when a load it controls is not energized. The occupancy sensor may energize the load to transfer energy from the load to the occupancy sensor when the amount of energy stored at the occupancy sensor reaches a threshold level. In some other embodiments, the occupancy sensor may include two sensing circuits and a connection to transfer energy from a load it controls to the occupancy sensor when the load is energized. The occupancy sensor may disable one of the sensing circuits when the load is not energized.12-13-2012
20120181988SECONDARY BATTERY SYSTEM AND CHARGING SYSTEM FOR SECONDARY BATTERY - A secondary battery system includes a secondary battery, an abnormality detecting unit OC which detects whether the secondary battery has become abnormal, and a signal generating circuit which outputs a signal to an externally connected device based on detection information of the abnormality detecting unit OC. The signal generating circuit includes a circuit element that can be held at least in a first state and in a second state. The signal generating circuit is configured to change an output state of a signal to the externally connected device based on whether the circuit element is in the first state or in the second state. The signal generating circuit is configured to switch the circuit element from the first state to the second state when the abnormality detecting unit OC has detected the abnormal state, and not to return the circuit element to the first state.07-19-2012
20100194346PROTECTION CIRCUIT FOR BATTERY PACK AND BATTERY PACK INCLUDING THE SAME - A protection circuit for a battery pack including a rechargeable battery cell having a positive electrode and a negative electrode is disclosed. The protection circuit includes a self-discharge switching device electrically connected to the positive electrode and the negative electrode of the battery cell, and a control unit electrically connected to the battery cell and the self-discharge switching device to turn-on or turn-off the self-discharge switching device according to a temperature of the battery cell.08-05-2010
20120256594SYSTEM AND METHOD FOR DETERMINING BATTERY CAPACITY IN AN ELECTRIC VEHICLE - In accordance with exemplary embodiments, battery capacity of an electric vehicle can be automatically determined. In an exemplary method, an instruction is received to determine a battery capacity value and one or more vehicle accessories are activated to discharge the battery to a first charge level. When the first charge level is reached, a generator in the vehicle is started and used to charge the battery to a second charge level, after which the battery capacity value can be determined and stored. In accordance with the exemplary embodiments, the vehicle comprises a controller adapted to cause a battery to be discharged and charged to determine a capacity value of the battery. A plurality of accessories are configured to activate and deactivate responsive to the controller to discharge the battery, while a generator is responsive to the controller to charge the battery so that the controller can determine the battery capacity value.10-11-2012
20120187910METHOD OF ACTIVATING A BATTERY - A method of activating a battery is applied to an electronic device having a controller that keeps counting system time to acquire a system date. The method includes: (1) acquiring data of the battery, including states, an activation number and a last activation date; (2) performing an activation process and setting the battery in an activation state when determining, based on the data, that the battery is in an inactivation state, the activation number is smaller than a predetermined activation number, and an interval between the last activation date and the system date is greater than a predetermined activation interval; (3) discharging the battery, and charging the battery when determining that a battery power level is less than a predetermined power level; and (4) setting the battery in the inactivation state after the activation process is finished. Therefore, a curing problem of the battery is overcome.07-26-2012
20120229093ELECTRICAL CHARGE AND DISCHARGE SYSTEM, METHOD OF CONTROLLING ELECTRICAL CHARGE AND DISCHARGE OF A BATTERY, AND COMPUTER-READABLE RECORDING MEDIUM - This electrical charge and discharge system comprises a battery configured to store electric power generated by a power generator using renewable energy, a power output device configured to output power generated by the power generator and power discharged by the battery and a controller configured to control charge and discharge of the battery and to terminate the charge and discharge control of the battery when determined that a fluctuation in power generated by the power generator is less than a standard in continuity for not less than a first period.09-13-2012
20080297114Charging Device Capable of Providing Backflow Current and Inrush Current Protection - A charging device capable of providing backflow current and inrush current protection includes a reception end for receiving a charging voltage, a rechargeable battery, and a dynamic protection unit coupled between the reception end and the rechargeable battery for controlling connection between the reception end and the rechargeable battery according to a control signal and connection condition between the reception end and the charging voltage.12-04-2008
20100327813POWER MANAGEMENT TOPOLOGIES - A power supply topology according to one embodiment includes a first path coupled to a controllable DC power source, a second path coupled to a rechargeable battery, and a third path coupled to a system load, the three paths coupled to a common node. The topology may further include a unidirectional switch coupled to the first path and a selectively unidirectional switch coupled to the second path. The topology may further include a power management control circuit including a wake up circuit having a comparison circuit and an output decision circuit. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.12-30-2010
20120319658MODULE BYPASS SWITCH WITH BYPASS CURRENT MONITORING - A battery pack system module may include a module bypass switch for allowing charge current to bypass the battery pack system module. The module bypass switch may be activated to divert charging current from the battery pack system module to other battery pack system modules. The charging current may be diverted to bring other battery pack system modules into balance with the battery pack system module. That is, to bring the state of charge of all battery pack system modules into coarse balance. When the module bypass switch is activated, charging current through the module bypass switch may be monitored by a current sensing device such as a current sensing resistor. A microprocessor may receive information about the bypass current level and use the information to determine when to de-activate the module bypass switch. Sensing current through a module bypass switch allows more accurate and quicker inter-module balancing.12-20-2012
20110037434METHOD OF CONTROLLING BATTERY CHARGE LEVEL OF HYBRID ELECTRIC VEHICLE - A method of controlling a battery charge level of a hybrid electric vehicle includes: monitoring a quantity of current accumulated for a predetermined time based on a battery charge/discharge current value; calculating a regenerative charge derating constant; calculating a correction coefficient based on the quantity of current accumulated and a battery state of charge; multiplying the regenerative charge derating constant by the correction coefficient to calculate a final regenerative charge derating constant; and multiplying the final regenerative charge derating constant by a charge power to calculate a final charge power, and selectively restricting the battery charge level based on the final charge power.02-17-2011
20130169233CHARGING METHOD AND CHARGING SYSTEM - Use start date-and-time is input by use of U07-04-2013
20120326672Reversible polarity operation and switching method for ZnBr flow battery when connected to common DC bus - An improved electrolyte battery is provided that includes a tank assembly adapted to hold an amount of an anolyte and a catholyte, a number of cell stacks operably connected to the tank assembly, each stack formed of a number of flow frames disposed between end caps and a number of power converters operatively connected to the cell stacks. The cell stacks are formed with a number of flow frames each including individual inlets and outlets for anolyte and catholyte fluids and a separator disposed between flow frames defining anodic and cathodic half cells between each pair of flow frames. The power converter is configured to connect the battery with either forward or reverse polarity to a DC power source, such as a DC bus. The anodic and cathodic half cells switch as a function of the polarity by which the battery is connected to the Dc power source.12-27-2012
20120319657BATTERY MANAGEMENT SYSTEM - A battery system and method is disclosed The battery system includes a plurality of battery modules configured to receive a current from a power supply and further configured to store and provide electrical energy from the power supply to a load. Each of the plurality of battery modules includes at least one battery and battery management circuitry (BMC) configured to monitor and detect data received from the at least one battery. The battery system further includes central control circuitry (CCC) configured to receive the data from each BMC. The control circuitry is configured to balance each of the plurality of the battery modules, wherein the control circuitry is configured to independently charge or discharge the at least one battery of each of the plurality of battery modules based on the data received from the BMC of each of the plurality of battery modules.12-20-2012
20120319659SYSTEM AND METHOD FOR CONTROLLING CHARGE/DISCHARGE OF NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND BATTERY PACK - A charge/discharge control system for controlling charge/discharge of a non-aqueous electrolyte secondary battery having a positive electrode including a composite oxide containing lithium and nickel. This system includes a charge/discharge circuit for discharging the secondary battery and charging the secondary battery with power from an external power source; and a control unit for controlling the charge/discharge circuit such that the voltage of the secondary battery is within a voltage range having a predetermined end-of-discharge voltage as a lower limit value and a predetermined end-of-charge voltage as an upper limit value. The control unit is configured to change at least the end-of-discharge voltage according to a variable related to deterioration of the secondary battery.12-20-2012
20120319656POWER CONTROL APPARATUS AND POWER CONTROL METHOD - According to one embodiment, a power control apparatus includes a power supply module and a controller. The power supply module is configured to supply, to a power supply destination, externally supplied external power or battery power from a battery which is configured to be chargeable by the external power. The controller is configured to supply the battery power in response to a battery-drive instruction, stop, upon detecting that a voltage of the battery power is less than a reference voltage, supply of battery power, and control supply of the external power and charging of the battery by the external power according to a control condition.12-20-2012
20090267568CURRENT BREAKING METHOD FOR RECHARGEABLE BATTERY AND BATTERY PACK USING THE SAME - A current breaking method of a rechargeable battery and a battery pack using the same. The current breaking method includes: measuring a current value of a current flowing through a high current path of a rechargeable battery; measuring a duration time of the current flowing through the high current path; setting a permission time for which the current is permitted to flow; and interrupting the current flow when the duration time exceeds the permission time. Thus, the timing for interrupting the current flowing through the high current path of the rechargeable battery is accurately calculated, thereby preventing overheating and explosion of the rechargeable battery.10-29-2009
20120081078BATTERY CHARGE MANAGEMENT USING A SCHEDULING APPLICATION - According to some embodiments, battery charge management using a scheduling application is disclosed. A first parameter may be received from a scheduling application running on a mobile computing device having a battery pack. Based on at least the first parameter and battery pack data, a required charge percentage for the battery pack may be determined and the remaining capacity of the battery pack may be determined. If the remaining capacity of the battery pack is less than the required charge percentage, a charge termination voltage may be determined and the battery pack may be charged to the charge termination voltage.04-05-2012
20120081077Rechargeable Battery System - A rechargeable battery system that controls charge/discharge of a lithium ion rechargeable battery, includes: an internal resistance detection unit that detects or estimates an internal resistance value indicating an internal resistance at the lithium ion rechargeable battery; and a discharge control unit that executes control so as to set a discharge suspension period while the lithium ion rechargeable battery is discharged if the internal resistance value detected via the internal resistance detection unit during discharge of the lithium ion rechargeable battery exceeds a first threshold value.04-05-2012
20120081076Secondary Battery System for Detecting Distribution of Heat Generation - A secondary battery system capable of controlling charge/discharge of a secondary battery that includes a core winding: calculates a change quantity ΔTT indicating an extent of change in the temperature difference ΔT between the temperatures in the central area and in the outer circumferential area of the core winding represented by a difference between a temperature difference ΔT1 calculated at a start of use of the secondary battery and a temperature difference ΔT2 calculated after a predetermined length of time elapses following the start of use of the secondary battery; and executes detection of a heat generation distribution at the core winding based upon the change quantity ΔTT.04-05-2012
20100231169AUTOMOTIVE VEHICLE AND METHOD FOR CHARGING/DISCHARGING A POWER STORAGE UNIT THEREIN - An automotive vehicle includes an electrical circuit capable of being electrically connected with an electrical grid, a propulsion electrical bus electrically connected with the circuit, a power conversion module electrically connected with the propulsion electrical bus, and a power storage unit electrically connected with the power conversion module.09-16-2010
20120280660BATTERY WARMING CIRCUIT AND BATTERY WARMING APPARATUS - A battery warming circuit is a circuit installed in a vehicle provided with an inverter circuit, which is supplied with direct current electrical power from a secondary battery, and a 3-phase alternating current motor, and this circuit includes: a switch control unit, which has first and second terminals connected to control terminals of first and second switching elements, and controls turning the first and second switching elements on and off; an accumulation unit which has a third terminal connected to the other end of a specific coil, and accumulates back electromotive force generated in the specific coil by turning the second switching element on and off, with the first switching element being turned on; and a charging control unit which is provided between the positive electrode of the secondary battery and the accumulation unit, and supplies electrical power accumulated in the accumulation unit to the secondary battery.11-08-2012
20120091967POWER STABILIZATION SYSTEM AND POWER STABILIZING METHOD - According to one embodiment, a power stabilization system includes a first power converter which is connected to a power system and performs bidirectional conversion between AC power and DC power. The power stabilization system includes a plurality of battery modules each including a secondary battery. The power stabilization system includes a second power converter which is connected between the first power converter and the battery module, converts DC power from the first power converter and charges a secondary battery of the battery module, and converts electric power charged in the battery module and discharges the converted electric power to the first power converter. The power stabilization system includes a controller which controls charge or discharge of each of the plurality of battery modules in accordance with a state of the power system.04-19-2012
20120091966CHARGING CONTROL METHOD AND BATTERY PACK FOR SECONDARY BATTERY - A charge control method of secondary batteries including measuring a charge current value when charging ends with regard to an assembled battery where a plurality of secondary batteries are connected in series, in parallel, or in series-parallel, storing the charge current value, and performing charging of the secondary batteries at the stored charge current value when starting the next charging with regard to the secondary batteries.04-19-2012
20120286738EMERGENCY POWER SUPPLY MECHANISM AND PROCEDURE FOR THE EMERGENCY POWER SUPPLY - An emergency power supply device is provided to supply emergency power to a direct voltage circuit. The direct voltage circuit has a first potential tap and a second potential tap, comprising an energy storage unit. The energy storage unit has a plus pole and a minus pole, and one of the poles is connected to the first potential tap via a first connection. The other pole is connected to the second potential tap via a second connection. At least one of the connections has a directional electric current meter and at least one of the connections has an interrupter. The directional electric current meter can measure a flow of charging current. The interrupter can prevent a flow of charging current, and the interrupter can be controlled as a function of the flow of charging current that has been measured.11-15-2012
20120286739System and Method for Estimating a State of a Battery Pack - A method for estimating the state of a battery having multiple cells is disclosed. In one embodiment, strain gauges are coupled to battery binding bands that hold cells of the battery together. The strain measured by the gauges may be related to the electrical charge stored by the battery. The method may improve estimates of battery state of charge during conditions when battery voltage changes little and the battery continues to accept charge.11-15-2012
20120286737ELECTRONIC DEVICE USING RECHARGEABLE BATTERIES AND BATTERY STATUS CONTROL METHOD APPLICABLE THERETO - An electronic device includes: a plurality of parallel-connection battery groups; and a plurality of battery balance circuits, respectively coupled to the parallel-connection battery groups, when the parallel-connection battery group has a temperature over a predetermined temperature range, the battery balance circuit performs a thermal balance operation on the parallel-connection battery group so that the temperature of the parallel-connection battery group returns into the predetermined temperature range.11-15-2012
20100201322BATTERY ANALYSIS SYSTEM - A battery analysis system includes a control module, a measurement module, and a pulse power module. The control module controls current to a battery to one of charge and discharge the battery. The measurement module determines N voltages across the battery at N times during a period when the control module controls the current and when the battery is at a predetermined temperature and a predetermined state of charge. N is an integer greater than 1. The pulse power module determines N resistances corresponding to the current and the N voltages across the battery and determines a pulse power value of the battery based on the N resistances. The pulse power value indicates a dynamic power of the battery to one of charge and discharge.08-12-2010
20120139499SUPPLY AND DEMAND CONTROL APPARATUS FOR ELECTRIC POWER SYSTEM, AND STORAGE MEDIUM STORING SUPPLY AND DEMAND CONTROL PROGRAM - According to one embodiment, the economical load dispatcher calculates a discharging threshold value and a charging threshold value based on a discharging unit price of and a charging and discharging efficiency of the secondary battery and further calculates output allocations of the generators and secondary battery such that the secondary battery is discharged when incremental fuel costs of the generators are higher than the discharging threshold value, whereas the secondary battery is charged when incremental fuel costs of the generators are lower than the charging threshold value.06-07-2012
20120139497EQUIPMENT SYSTEM COMPRISING A BATTERY-OPERATED ELECTRICAL DEVICE, A RECHARGEABLE BATTERY UNIT, AND A BATTERY CHARGER - An equipment system includes a battery unit (06-07-2012
20130009604USING REFERENCE ELECTRODES TO MANAGE BATTERIES FOR PORTABLE ELECTRONIC DEVICES - The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system uses a reference electrode in the battery to monitor an anode potential of an anode in the battery during charging of the battery in the portable electronic device. If the anode potential falls below an anode potential threshold, the system modifies a charging technique for the battery to extend a cycle life of the battery. For example, the system may reduce a charge current of the battery if the anode potential falls below the anode potential threshold to prevent degradation caused by a negative anode potential during charging of the battery.01-10-2013
20130009605CHARGING AND DISCHARGING METHOD FOR LITHIUM ION SECONDARY BATTERIES AND CHARGING AND DISCHARGING SYSTEM FOR THE SAME - A first threshold that is lower than a progressively deteriorating SOC that is an SOC in which a battery performance of the lithium ion secondary battery deteriorates when the lithium ion secondary battery is stored and a second threshold that is greater than the progressively deteriorating SOC are preset. A computer controls a switch provided between electric wires and the lithium ion secondary battery, an electric power supply source that supplies electric power necessary to charge the lithium ion secondary battery and a load that consumes electric power discharged from the lithium ion secondary battery are connected to the electric wires, such that a charging operation for the lithium ion secondary battery is continued from the first threshold to the second threshold when the lithium ion secondary battery is charged based on value of the SOC of the lithium ion secondary battery, the value of the SOC is transmitted from a monitor device that detects the value of the SOC of the lithium ion secondary battery and that controls the switch such that a discharging operation for the lithium ion secondary battery is continued from the second threshold to the first threshold when the lithium ion secondary battery is discharged.01-10-2013
20120242293ELECTRIC POWER MANAGEMENT APPARATUS, SYSTEM AND METHOD - According to one embodiment, an electric power management apparatus is for controlling electric power of at least one home appliance using at least one rechargeable battery. The apparatus includes an analysis unit, a first generating unit, and a second generating unit. The analysis unit analyzes a charge residue of the rechargeable battery. The first generating unit generates a control schedule used to control the electric power of the home appliance in accordance with the charge residue. The second generating unit generates a charge/discharge schedule used to control charge and discharge of the rechargeable battery in accordance with the charge residue.09-27-2012
20080238371Fully-charged battery capacity detection method - A fully-charged battery capacity detection method includes a capacity variation detection step, an open-circuit voltage detection step, a remaining capacity determination step, a remaining capacity variation rate calculation step, and a fully-charged capacity calculation step. The capacity variation detection step calculates a capacity variation value (δAh) of a battery between first detection timing and second detection timing. The open-circuit voltage detection step detects first and second open-circuit voltages (VOCV10-02-2008
20080238370BATTERY PACK FOR CORDLESS POWER TOOLS - A battery pack which includes a battery pack electronic control circuit adapted to control an attached power tool and/or an attached charger. The battery pack includes additional protection circuits, methodologies and devices to protect against fault conditions within the pack, as the pack is operatively attached to and providing power to the power tool, and/or as the pack is operatively attached to and being charged by the charger.10-02-2008
20080231232Battery pack - A battery pack is constructed with a plurality of secondary batteries or a plurality of battery assemblies, each having a plurality of unit batteries, and at least one safety switch, which can facilitate precise measurement of the voltages of the plurality of secondary batteries or battery assemblies. The battery pack is constructed with a plurality of secondary batteries, at least one safety switch electrically connected between two adjacent batteries among the plurality of secondary batteries, and a plurality of sensing lines for measuring voltages of the plurality of secondary batteries. The quantity of the sensing lines is equals to a sum of the number of the secondary batteries, and the number of the safety switches, and plus one.09-25-2008
20130169232METHODS AND SYSTEMS FOR MONITORING AND USING AN ELECTRICAL ENERGY-STORAGE DEVICE - One disclosed embodiment relates to a method of estimating a state of health of an electrical energy-storage device. The method may include receiving information indicative of a history of a voltage level of the electrical energy-storage device during a history of charging and discharging of the electrical energy-storage device. The method may also include using the received information to estimate at least one peak or valley in the history of the voltage level. Additionally, the method may include using at least one information-processing device to generate an estimate of a state of health of the electrical energy-storage device based on the at least one estimated peak or valley.07-04-2013
20080224665Current detection apparatus for a car power source - The current detection apparatus is provided with a current detection section (09-18-2008
20080224664Charging and discharging control circuit and charging type power supply device - An overcharge detecting comparator (09-18-2008
20110273141HYBRID WORKING MACHINE AND ELECTRIC POWER ACCUMULATION CONTROLLER - A hybrid working machine includes a first electric motor performing a power running operation of being driven with supplied electric power and a regenerative operation of generating electric power; a first electric circuit controlling the output of the first electric motor; a battery supplying the first electric motor with the electric power and storing the regenerated electric power from the first electric motor; a charge and discharge circuit controlling the charging current and the discharge current of the battery; and a controller controlling the charge and discharge of the battery for driving the machine. The controller calculates a level representing a proportion by which the output of the battery is limited with respect to each of multiple conditions related to the output of the battery. The controller limits the charging current and the discharge current of the battery based on the calculated levels.11-10-2011
20130175996CHARACTERIZING BATTERY DISCHARGE UNDER DIFFERENT LOADS - A storage battery may be characterized from measurements of voltage versus time for different loads. Each measurement for a given load value may be fitted to a corresponding discharge function. The corresponding discharge functions may be applied to specific end voltage values to determine discharge time data for given loads. The discharge data may be interpolated to provide additional data points for discharge time to a particular voltage as a function of load. The resulting set of discharge time data may be fit to a discharge time function. The discharge time function may be used to fill in voltage versus time curves for intermediate load values to produce a computer model for time to a particular voltage.07-11-2013
20130134944BATTERY PACK - A battery pack having a battery management system is disclosed. In some embodiments, the battery pack includes a battery management system, which includes a detector detecting a voltage and a current of each of the battery cells, a current monitor receiving current information detected by the detector, and a controller receiving voltage and current information from the detector and current information from the current monitor, and calculating capacities of the battery cells based on the receive information.05-30-2013
20130113433STORAGE CAPACITY MANAGEMENT SYSTEM - A storage capacity management system for a battery provided in a vehicle having an electric motor as a drive source includes a deteriorated state estimating unit that estimates a deteriorated state of the battery, a zone setting unit that sets a storage capacity where the battery can be used into a plurality of zones in accordance with a deteriorated state of the battery, a charged state calculating unit that calculates a charged state of the battery, a zone determination unit that determines to which zone of the plurality of zones set by the zone setting unit the charged state of the battery belongs, and a control instructing unit that instructs to execute a control associated with the charge or discharge of the battery in accordance with the zone determined by the zone determination unit.05-09-2013
20130113430BATTERY PACK AND METHOD OF CONTROLLING THE SAME - A battery pack and a method of controlling the same are disclosed. According to one aspect, when a voltage of a battery pack or a terminal voltage is greater than a predetermined voltage when the battery pack returns from an over-discharge state, an input voltage switch of a direct current (DC/DC) converter is switched on, whereby power is stably supplied to a control unit of the battery pack. When the voltage of the battery pack is less than a predetermined voltage during discharging, a leakage of current to the DC/DC converter from a battery cell is reduced or avoided and consumption of power of the battery cell is reduced or avoided.05-09-2013
20130113435System and Method for Extending the Physical Life of Batteries in Mobile Devices - Disclosed is a method and device 05-09-2013
20130113434ELECTRICITY STORAGE DEVICE, ELECTRICITY STORAGE CONTROL METHOD, MANAGEMENT DEVICE, MANAGEMENT METHOD, AND ELECTRICITY STORAGE SYSTEM - An electricity storage control device that transmits a charging rate of at least one of electricity storage devices to a management device that manages electric power interchange between the electricity storage devices, the electricity storage control device including: a charge information acquisition unit that acquires the charging rate of the at least one electricity storage device as a first charging rate; a communication unit that transmits the first charging rate to the management device; and a control unit that causes the communication unit to transmit, instead of the first charging rate, a second charging rate that charge and discharge determining information defines as the charging rate at which the charge and discharge are prohibited, when the charge and discharge determining information defines the first charging rate as the charging rate at which the charge and discharge are permitted.05-09-2013
20130113432APPARATUS AND METHOD FOR BATTERY EQUALIZATION - There is provided an apparatus for equalization of a battery pack that is composed of plural battery cells. The apparatus includes: a cell balancing device equalizing the voltages of the plural battery cells; a battery cell monitor monitoring the voltage and/or current of each battery cell; a correction voltage calculator calculating correction voltage for a subject battery cell that needs to be equalized, based on the monitored voltage and/or current of the subject battery cell, wherein the correction voltage depends on internal resistance of the subject battery cell; and a cell balancing controller determining the subject battery cell. The cell balancing controller corrects target voltage for equalization of the subject battery cell by the calculated correction voltage, and causes the cell balancing device to execute equalization of the subject battery cell so that the monitored voltage of the subject battery cell reaches the corrected target voltage.05-09-2013
20130113431Nickel-Zinc Flow Battery - A nickel-zinc battery includes a battery housing, a nickel oxide positive electrode supported in the battery housing, a metal substrate negative electrode supported in the battery housing, a spacer disposed between the positive and negative electrodes, an electrolyte contained within the battery housing and a means for circulating electrolyte in fluid communication with the housing for circulating the electrolyte between the positive and negative electrodes. The electrolyte contains zinc and the metal substrate is adapted for deposition of the zinc during charging of the battery. The spacer maintains the positive electrode in a spaced relationship apart from the negative electrode.05-09-2013
20130099756BACKUP POWER SUPPLY SYSTEMS AND METHODS - Backup power supply systems and methods are disclosed. An exemplary method includes providing at least one battery module having a first register with at least one battery parameter. The method also includes coupling an intelligent interface converter (IIC) between the at least one battery module and an electrical load, the IIC having a second register with at least one battery parameter. The method also includes communicating the at least one battery parameter to a user for reporting and management operations.04-25-2013
20130099755LITHIUM BATTERY PROTECTION CIRCUITRY - A lithium battery protection circuit coupled to a lithium battery is provided. The lithium battery protection circuit includes an over-charge protection circuit and a logic circuit coupled to over-charge protection circuit. The logic circuit has a first logic output and a second logic output. The lithium battery protection circuit also includes a level shift circuit coupled to the logic circuit through the first logic output and the second logic output, and the level shift circuit is configured to convert the first logic output and the second logic output to high voltage levels in an over-charge protection state. Further, the lithium battery protection circuit includes a substrate switching circuit coupled to the level shift circuit and a power transistor coupled between a negative end of the lithium battery and an external circuit negative electrode. The level shift circuit includes a first inverter coupled to the second logic output, a plurality of PMOS transistors, at least one of which has high source-drain voltage and low gate-source voltage, and a plurality of NMOS transistors, at least one of which is a low-voltage NMOS transistor.04-25-2013
20130099754BATTERY MANAGEMENT SYSTEM AND BATTERY MANAGEMENT METHOD - The present invention relates to a battery management system and a battery management method. The battery management system for managing a battery including at least one cell comprises: an SOH (State of charge) estimating unit for determining estimation parameters for estimating an SOC of the battery; and a controller for updating a pattern table for estimating a pattern of use on a charge and discharge cycle of the battery, based on the estimation parameters. The pattern table includes a plurality of pattern counters, and the plurality of pattern counters correspond to a plurality of estimation ranges, respectively. The controller determines to which estimation range from among the plurality of estimation ranges the estimation parameters correspond, and updates a value of a pattern counter corresponding to the determined estimation range from among the plurality of pattern counters.04-25-2013
20130175997SECONDARY BATTERY SYSTEM AND CHARGE AND DISCHARGE METHOD FOR THE SAME - A secondary battery has a progressively degrading SOC that is an SOC at which the battery performance degrades during storage, and is charged and discharged by a controller. An information processor holds a first threshold value set in advance and lower than the progressively degrading SOC of the secondary battery, and a second threshold value set in advance and higher than the progressively degrading SOC, makes the controller continue an operation to charge the secondary battery from the first threshold value to the second threshold value at the time of charging the secondary battery based on the value of the SOC of the secondary battery detected by the controller, and makes the controller continue an operation to discharge the secondary battery from the second threshold value to the first threshold value at the time of discharging the secondary battery based on the value of the SOC of the secondary battery detected by the controller.07-11-2013
20130141051ENERGY STORAGE SYSTEM AND METHOD FOR CONTROLLING THE SAME - An energy storage system configured to be coupled to at least one of a power generation system, a grid, or a load, the energy storage system including a battery system including at least one rack, the at least one rack including a rack controller, and a system controller configured to control a charging operation and a discharging operation of at least one battery on the at least one rack in accordance with a temperature of the at least one battery.06-06-2013
20110215765PROTECTION CIRCUIT AND BATTERY PACK - A protection circuit includes a detector to detect an overcharging or an excessive discharging of a battery, from a voltage of a power terminal coupled to the battery, a controller to generate a control signal to stop the charging or the discharging of the battery when a detection of the overcharging or the excessive discharging is continuously detected by the detector for a predetermined time, and a current varying circuit to vary a current flowing through the power terminal only for a certain time when the detector detects the overcharging or the excessive discharging of the battery.09-08-2011
20130147438COMBINED PI FEEDBACK AND FEEDFORWARD CELL BALANCING METHOD - A method and system for battery pack cell state of charge balancing using a proportional-integral feedback control combined with a feedforward control. The proportional-integral feedback control acts on the difference between the average discharge for all cells over a previous driving cycle and the discharge of a specific cell over the previous driving cycle. Thus, the feedback term is based on whether an individual cell discharges more quickly or less quickly than the battery pack average during driving. A cell which discharges more quickly will receive decreased resistive discharge balancing. The feedforward control acts on the difference between an individual cell's state of charge and the battery pack average state of charge at the beginning of a current driving cycle. The overall control effort, which determines the resistive discharge balancing on-time duty cycle for each cell, is the sum of the feedback control signal and the feedforward control signal.06-13-2013
20110210702BATTERY SYSTEM - A battery system including an assembled battery, a charge mode for charging the assembled battery and a discharge mode for converting electric energy charged in the assembled battery to AC power having the same or substantially the same frequency as a grid and supplying the AC power to a power supply line through which the grid and a load are connected further including a current detector for detecting current supplied to the load, and a control device for calculating an average power usage of past several days based on current being detected by the current detector, and converting the amount of electric power corresponding to the difference between the average power usage and a power usage based on the current value from the current detector to the AC power from the assembled battery to the load in the discharge mode to supply the AC power to the power supply line.09-01-2011
20080197809Configurable Battery Management System with Embedded SRAM in Chip Architecture - A battery management system includes an external non-volatile memory and a battery management chip with embedded SRAM, CPU, ROM, and ROM_RAM encoder. The chip communicates with the non-volatile memory via standard protocols. While the battery management system is powered on or reset, a battery management program stored in the non-volatile memory is loaded to the embedded SRAM and the executed by CPU. As turning off this system, the program in the SRAM is then restored back the non-volatile memory. A battery protection IC is optionally embedded in the chip or externally connected with this chip to protect the battery from over-/under-voltage, over-current and short-circuit in both charge and discharge.08-21-2008
20080197808Method and apparatus for battery-backed power supply and battery charging - Apparatuses, systems, and methods for providing battery-backed power to movable partitions are disclosed. A power converter generates a DC output from an AC input. The DC output may be selectively decoupled from an enabled DC output such that the DC output can be monitored for acceptable operation in-situ. The enabled DC output may be selectively coupled to a battery output terminal. A charge current may be sensed between the enabled DC output and the battery output to control charging of the battery with a pulse-width modulation operation by controlling the selective coupling of the enabled DC output to the battery output. The enabled DC output and the battery output are coupled in a logical-or configuration to generate a supply output providing current from the enabled DC output and the battery. The supply output may drive a movable partition controller and a motor configured for opening and closing a movable partition.08-21-2008
20130147439ELECTRODE, BATTERY, BATTERY PACK, ELECTRONIC APPARATUS, ELECTRIC VEHICLE, ELECTRICAL STORAGE APPARATUS AND ELECTRICITY SYSTEM - An electrode includes a current collector and an electrode layer provided on the current collector. The electrode layer includes first particles containing an active material and second particles harder than the current collector. The second particles are present at least at an interface between the current collector and the electrode layer.06-13-2013
20100308771SYSTEM AND METHOD FOR PROTECTION OF BATTERY PACK - A battery system includes a battery pack, an electrical interface and a load discharging the battery pack. The battery pack is used to provide a power supply and includes a monitor which is configured to monitor a battery status of the battery pack. The electrical interface is coupled to the battery pack for transmitting the power supply and the battery status. The load is coupled to the battery pack through the electrical interface, and receives the power supply to discharge the battery pack and receives the battery status via a first communication bus to control the discharging of the battery pack based on the battery status.12-09-2010
20110234170CIRCUITS, SYSTEMS AND METHODS FOR BALANCING BATTERY CELLS - A circuit for balancing a plurality of battery cells includes a controller and an electronic control unit (ECU) coupled to the controller. The controller samples multiple discharging cell voltages of the battery cells respectively at a predetermined time during a discharging state of the battery cells, and samples multiple charging cell voltages of the battery cells respectively during a charging state of the battery cells. The ECU processes the charging cell voltages and the discharging cell voltages, thereby providing control commands for the controller to control the battery cells to achieve a balance.09-29-2011
20110234169BATTERY STATE MONITORING CIRCUIT AND BATTERY DEVICE - Provided is a battery state monitoring circuit including: a charge/discharge control circuit for detecting and controlling a state of a secondary battery; a temperature sensor circuit connected to an overcurrent detection terminal; an amplifier for comparing a reference voltage and a divided voltage of the over-current detection terminal; and a transistor that receives an output signal of the amplifier, for controlling a charge control output terminal. When a charger is connected in a state in which the secondary battery has an ultra-low voltage, a charge control FET is controlled so that a constant voltage may appear between output terminals, to thereby ensure an operating voltage of the temperature sensor circuit to enable an overheat protection function.09-29-2011
20100315043FAULT TOLERANT MODULAR BATTERY MANAGEMENT SYSTEM - A modular battery management system for managing a plurality of batteries and driving a load includes a plurality of battery management control modules; a plurality of bi-directional voltage converter modules respectively connected to the batteries and connected to the battery management control modules, the bi-directional voltage converter modules being connected to each other in parallel; and a plurality of energy storage modules respectively connected with the bi-directional voltage converter modules in parallel and connected to the load. The bi-directional voltage converter modules are configured to transfer electric energy from the batteries to the load or from the energy storage modules to the batteries. The battery management control modules are configured to execute a predetermined program based on the state information of each battery and control the bi-directional voltage converter modules. The batteries, the bi-directional voltage converter modules, the energy storage modules, and the battery management control modules are arranged in a redundant topology so that if any one of the components fails, the other components resume the functions of the failing component.12-16-2010
20100315042INTELLIGENT LITHIUM-BATTERY-ACTIVATING CHARGING DEVICE - An intelligent lithium-battery-activating charging device is connectable between a charging power source and an application electrical device and contains an internal circuit that builds up a charging/discharging mode to correspond the charging power source to a lithium battery accommodated in the application electrical device. After a short time period of charging, which is short enough that the voltage detection circuit inside the application electrical device cannot properly respond, a time period of discharging follows and then discharging is stopped, so that the detection performed by the voltage detection circuit is delayed until the cycles of short time period charging and discharging are completed. If the detection shows the battery is not fully charged, then the charging operation starts again. During the charging process, ions are moved in one direction in one moment and then reversed in the next moment so that built up of deposition on electrodes can be avoided.12-16-2010
20130154571POWER CONTROL SYSTEM AND METHOD - A power control system includes a power control unit, a processing unit, and a power storage unit. The power storage unit supplies power to an electronic device when the electronic device experiences a sudden power failure from an external power source. The power control unit obtains a discharge voltage, a discharge current value and a discharge temperature of the power storage unit. The processing unit determines whether a protection voltage of the power storage unit should be changed or not according to the discharge temperature and the discharge current value. The power control system controls operation of the power storage unit according to a comparison between the discharge voltage and the protection voltage. The disclosure further provides a power control method.06-20-2013
20130181679PASSENGER BUS WITH ON-BOARD CHARGER - The disclosure describes systems, devices and methods relating to the charging of electrical energy storage devices on passenger buses. The disclosure also describes a passenger bus (07-18-2013
20130181681CHARGING/DISCHARGING CONTROL DEVICE, BATTERY PACK, ELECTRICAL EQUIPMENT, AND CHARGING/DISCHARGING CONTROL METHOD - A charging/discharging control device that can protect a chargeable/dischargeable battery cell from an excess current state while preventing the device from being increased in scale and from being complex. The charging/discharging control device includes: switches that are connected in parallel on current paths between a battery and a positive terminal of a battery pack; a switching control unit that switches between a charging current path and a discharging current path; a protective element that fuses the charging current path when a current value of the charging current path flowing through the switch exceeds a first fusing current value; and a protective element that fuses the discharging current path when a current value of the discharging current path flowing through the switch exceeds a second fusing current value higher than the first fusing current value.07-18-2013
20130181682CHARGE/DISCHARGE DEVICE AND CHARGE/DISCHARGE CONTROLLING METHOD - A charge/discharge device that controls charge/discharge of an electric-power storage apparatus comprises a heating determination unit that determines whether to heat the electric-power storage apparatus based on a temperature of the electric-power storage apparatus at a time of starting up the electric-power storage apparatus, and a heating control unit that, when it is determined to heat the electric-power storage apparatus, obtains a frequency characteristic of a resistance value of an internal resistance of the electric-power storage apparatus corresponding to a temperature and a charge level of the electric-power storage apparatus and performs control of alternately repeating charge and discharge of the electric-power storage apparatus in a charge/discharge period specified based on the frequency characteristic.07-18-2013
20130181680FAULT TOLERANT MODULAR BATTERY MANAGEMENT SYSTEM - A modular battery management system for managing a plurality of batteries and driving a load includes a plurality of battery management control modules; a plurality of bi-directional voltage converter modules respectively connected to the batteries and connected to the battery management control modules, the bi-directional voltage converter modules being connected to each other in parallel; and a plurality of energy storage modules respectively connected with the bi-directional voltage converter modules in parallel and connected to the load. The bi-directional voltage converter modules are configured to transfer electric energy from the batteries to the load or from the energy storage modules to the batteries. The batteries, the bi-directional voltage converter modules, the energy storage modules, and the battery management control modules are arranged in a redundant topology so that if any one of the components fails, the other components resume the functions of the failing component.07-18-2013
20110279089PORTABLE AUXILIARY POWER-SOURCE DEVICE FOR A VEHICLE - The present invention relates to a portable auxiliary power-source device for a vehicle, and more specifically to a portable auxiliary power-source device which incorporates a rechargeable battery and is able to temporarily charge while the vehicle's battery is discharging, and is able to effect ignition of the vehicle and charge portable, personal digital devices.11-17-2011
20110298427BATTERY HEATING APPARATUS FOR VEHICLE - In an apparatus for heating a battery of a vehicle, having an electric rotating machine and buck-boost converter between the battery and rotating machine to step up/down voltage outputted from the battery to be supplied to the rotating machine and step up/down voltage generated by the rotating machine to be supplied to the battery, it is configured to have a first capacitor interposed between wires connecting the battery to the converter, a second capacitor interposed between wires connecting the converter to the rotating machine, and a heating controller to control operation of the converter to generate current similar to rectangular wave current and input/output the current between the battery and the second capacitor through the first capacitor so as to heat the battery. With this, it becomes possible to efficiently heat the battery so that the battery can output expected power, without adversely affecting the size of the apparatus.12-08-2011
20110309799System and Method for Extending the Usable Capacity of a Battery Pack - Systems and methods for extending the useable capacity of a battery pack are disclosed. In one example, flyback transformers supply charge to lower capacity battery cells to extend battery output.12-22-2011
20110309798LITHIUM ION SECONDARY BATTERY, BATTERY PACK, HYBRID ELECTRIC VEHICLE, BATTERY PACK SYSTEM, AND CHARGE-DISCHARGE CONTROL METHOD - A lithium ion secondary battery (12-22-2011
20130187614CHARGING TECHNIQUES FOR SOLID-STATE BATTERIES IN PORTABLE ELECTRONIC DEVICES - The disclosed embodiments provide a system that manages use of a solid-state battery in a portable electronic device. During operation, the system monitors a temperature of the solid-state battery during use of the solid-state battery with the portable electronic device. Next, the system modifies a charging technique for the solid-state battery based on the monitored temperature to increase a capacity or a cycle life of the solid-state battery. To modify the charging technique based on the monitored temperature, the system may increase a charge rate of the solid-state battery if the temperature exceeds a first temperature threshold. On the other hand, the system may maintain the charge rate of the solid-state battery if the temperature does not exceed the first temperature threshold.07-25-2013
20130187615BATTERY PROTECTING CIRCUIT, BATTERY PROTECTING DEVICE, AND BATTERY PACK - A disclosed battery protecting circuit includes a battery protecting IC powered by a voltage of a secondary battery; another battery protecting IC powered by a voltage of another secondary battery connected to the secondary battery in series; and a constant voltage output unit which receives a maximum voltage obtained by adding voltages of the secondary battery and the other secondary battery in series and outputs a constant voltage upon receipt of a control signal from an output terminal of the battery protecting IC or the other battery protecting IC.07-25-2013
20120013307ELECTRIC TOOL BATTERY - In an electric tool battery, even in a case where poor connection or the like is generated in the wiring between one voltage monitoring element and the cells, it is possible to monitor the voltages of the cells by another voltage monitoring element, so that it is possible to achieve an improvement in terms of the reliability of the electric tool battery against overcharge etc. The electric tool battery includes a plurality of cells connected in series and a plurality of voltage monitoring elements capable of doubly monitoring of the voltages of the individual cells at the time of charging and discharging, and a lead plate electrically connecting an electrode of the cell and an electrode of the cell has voltage signal extraction portions respectively corresponding to the voltage monitoring elements with the voltage signal extraction portions and the voltage monitoring elements being respectively connected to each other by different conductors.01-19-2012
20120019210DC POWER SUPPLY SYSTEM AND OUTPUT CONTROL METHOD - Suppliable power per unit time from a secondary battery (01-26-2012
20130200852Circuit for Balancing Cells - A cell balancing circuit controlling balanced discharge of a plurality of battery cells, the cell balancing circuit having a balancing part sensing voltages of the battery cells, a controller responsive to an output of the balancing part to select one of the battery cells for discharge of the cell, and a resistance controller controlling discharge of the selected cell. The resistance controller includes at least one discharge circuit connected to the battery cells; and a plurality of resistors connected to output signal channels of the discharge circuit, the resistors being selectively connected in series according to a control signal of the controller to discharge the selected cell.08-08-2013
20130200854BATTERY, BATTERY SYSTEM AND METHOD FOR DETECTING ABNORMAL STATE OF BATTERY - There is provided a battery system including a battery having a luminescent layer on surfaces of an exterior member thereof, the luminescent layer containing a stress luminescent material that emits light in response to application of mechanical stress, a photodetector device that detects light emission by the stress luminescent material, and abnormality detection means for monitoring the light emission detected by the photodetector device and thus detecting an abnormality in the battery.08-08-2013
20130200853ELECTRIC TOOL WITH CONTROLLER OF BATTERY PACK AND THE CONTROL METHOD THEREOF - An Electric tool with a controller for a battery pack and a control method thereof. The electric tool includes a battery pack, an operator and a controller The battery pack includes a plurality of battery cells and a protection circuit module detects and controls a state of charge and discharge of a plurality of battery cells. The operator receives power from the battery pack and converts the received power into physical energy. The controller controls the protection circuit module so as to perform a protection process of the battery pack in a state similar to over-discharge caused in the case in which the power is transferred from the battery pack to the operator and at the same time, the operator does not continuously operate.08-08-2013
20120074910BATTERY CHARGE MANAGEMENT - An electronic device comprises at least one battery coupled to the electronic device by a switchable electrical connection and logic to place the battery charge level within a predetermined charge range and to disconnect the battery from the electronic device when the battery is within the predetermined charge range. Other embodiments may be described.03-29-2012
20130207614Battery Management System for an Electrical Device Working in Accordance with Galvanic Principles, for Example a Lithium-Ion Cell - A battery management system for monitoring and controlling a lithium-ion accumulator with at least one lithium-ion cell includes a central control device connected to a program storage device, a data storage device and a sensor interface device to monitor parameters of the lithium-ion cell. The system is configured to connect with at least one external sensor device for measuring at least one function parameter of a respective lithium-ion cell and includes an import device for importing an operation parameter of an assigned lithium-ion cell.08-15-2013
20130207611SYSTEM AND METHOD OF MANAGING A LITHIUM ION BATTERY PACK IN A WALK MOWER - A walk mower comprises a traction frame having a reel cutting unit and a traction drum which are both driven from an electric motor carried on the traction frame. The electric motor is powered by a lithium ion battery pack carried on the traction frame. A charger is provided for recharging the battery pack. Once a fully charged level of the battery pack is reached, a battery management system initiates a sleep period countdown. At the conclusion of the countdown, the charger discharges the battery pack if the mower has not been used during the countdown period to a reduced state of charge level. The state of charge is maintained at this reduced level during a plurality of successive sleep periods in a storage state of charge range.08-15-2013
20130207613BATTERY MANAGEMENT SYSTEM - A method and apparatus are disclosed for a Battery Management System (BMS) for the controlling of the charging and discharging of a plurality of battery cells (08-15-2013

Patent applications in class With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.)