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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

320135000 - Regulated discharging

Patent class list (only not empty are listed)

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Entries
DocumentTitleDate
20080297115Device Using Residual Energy of a Battery - Control means (12-04-2008
20090195213Conversion systems with balanced cell currents - A conversion system includes a conversion circuit coupled to multiple cells for generating multiple sampling signals indicative of the cell voltages of the cells respectively. Each sampling signal is with respect to the same reference level. In addition, the conversion system includes a compensation circuit coupled to the conversion circuit for generating a compensation current that flows through at least one cell of the multiple cells via the conversion circuit for balancing the currents respectively flowing through the cells.08-06-2009
20090195212Method and system for utilizing a memory control circuit for controlling data transfer to and from a memory system - Methods and systems are disclosed for utilizing a memory control circuit for controlling transfer of data to and from a memory system. A memory control circuit with a back up battery and control circuits is provided. Battery health is determined through a discharge cycle of the back up battery. A power supply generated from the back up battery is provided to circuitry of the memory control card during normal operations of the memory control circuit during a non-power loss state. The power supplied from the back up battery during the non-power loss state of the memory control circuit is utilized by at least a first circuit of the memory control circuit as part of normal memory controller card operations during the battery health discharge cycle. When the system is not performing a battery health cycle the first circuit receives normal system power. The memory control circuit may be a RAID card. The first circuit may be memory circuitry. The backup battery discharge rate may be regulated during the battery health discharge cycle by switching the power source for the circuitry of the memory control card between the backup battery and the normal system power.08-06-2009
20090195211Method and system for regulating current discharge during battery discharge conditioning cycle - Methods and systems are disclosed for utilizing a memory control circuit for controlling transfer of data to and from a memory system. A memory control circuit with a back up battery and control circuits is provided. Battery health is determined through a discharge cycle of the back up battery. A power supply generated from the back up battery is provided to circuitry of the memory control card during normal operations of the memory control circuit during a non-power loss state. The power supplied from the back up battery during the non-power loss state of the memory control circuit is utilized by at least a first circuit of the memory control circuit as part of normal memory controller card operations during the battery health discharge cycle. When the system is not performing a battery health cycle the first circuit receives normal system power. The memory control circuit may be a RAID card. The first circuit may be memory circuitry. The backup battery discharge rate may be regulated during the battery health discharge cycle by switching the power source for the circuitry of the memory control card between the backup battery and the normal system power.08-06-2009
20100141216BATTERY SYSTEM AND PROTECTION APPARATUS THEREOF - A battery system includes a battery and a battery protection apparatus. The battery protection apparatus protects the battery from over-discharge. The battery protection apparatus includes a voltage controlled switch, a start switch, and a voltage detecting unit. The voltage controlled switch establishes an electrical connection between the battery and the load. The start switch turns on the voltage controlled switch when actuated. The voltage detecting unit detects a battery voltage of the battery and generates a detecting voltage according to the battery voltage. The voltage controlled switch is turned off when the detecting voltage is lower than a predetermined value.06-10-2010
20120176098POWER SOURCE HAVING A PARALLEL CELL TOPOLOGY - A power source with multiple cells connected in parallel to a common node or power supply point. The individual cells within the power source may also have a dedicated controller for each of the individual cells. Additionally, a system controller is coupled to each controller in a feedback loop and is configured to selectively connect each cell of the plurality of cells to a power bus to control the discharge of each of the plurality of cells.07-12-2012
20130038295BACKUP BATTERY PROTECTION SYSTEM - A backup battery protection system for protecting a backup battery supplying power to a load includes a switch unit and an overdischarge protection module. The switch unit switches power supplied by the backup battery to the load. The overdischarge protection module shuts down the switch unit to stop the backup battery from discharging when voltage of the backup battery is lower than a first preset voltage and starts the switch unit when voltage of the backup battery increases to be higher than a second preset voltage after the discharging stop.02-14-2013
20130038296System For Storing Electric Energy - The invention relates to a system for storing electric energy, comprising a first and a second storage cell, each storage cell having an operating voltage, and a device is provided for reducing the energy content of a storage cell when a threshold voltage is exceeded or reached. The invention is characterized in that a control device which is designed to detect a parameter of the first and/or second storage cell, to identify a state of deterioration of the storage cell, and to change the threshold voltage of the first and/or the second storage cell is provided.02-14-2013
20100109612METHOD, APPARATUS, AND SYSTEM FOR POWER SOURCE FAILURE PREDICTION - Some embodiments of a method, apparatus, and system for power source failure prediction are described. According to some embodiments, the system may include, among other things, a display device to draw power from a direct current power source, two or more electrical lines positioned on either side of the direct current power source to determine a voltage across the direct current power source, and a power source management unit coupled to the two or more electrical lines to measure the voltage. In some embodiments, a cell monitoring unit may be coupled to the two or more electrical lines to measure the voltage for the power source management unit, where the cell monitoring unit is capable of converting the measured voltage to a digital signal, measuring the rate of change of the voltage over a period of time, and providing information to the power source management unit. Other embodiments are described.05-06-2010
20090309548Graphic State of Charge Indicator for a Battery Charging System and Method of Use - A graphic state of battery charge indicator is used to provide the user with a visual indication of state of battery charge, magnitude of current flow and direction of current flow by using displays such as multi-segment LCD or LED displays in the shape of a battery. The indicator is able to provide these parameters by sequencing the on/off operation of the segmented displays. A microcontroller is provided battery state data from a battery monitor and converts this information to on/off commands for the segmented displays. There may be up to 10 segmented displays in the indicator with each segment proportionally representing a percentage of the state of battery charge. State of charge is indicated by a single on display at the appropriate location in the display. Current flowing into the battery is represented by a ripple effect in the displays in the positive direction. Current flowing out of the battery is represented by a ripple effect in the display in the negative direction.12-17-2009
20090115372DISCHARGE CONTROL SYSTEM - A discharge control system of a electric storage pack has a plurality of electric rechargeable cells connected in series and a discharge line is connected from a electric rechargeable cell to a load driving feeding circuit. The discharge control system includes cell voltage detection units for detecting respective cell voltages of the plurality of cells, a switch group made up of a plurality of switches connected between the plurality of cells, and a control unit which designates a cell having a highest cell voltage in the plurality of electric rechargeable cells possessed by the electric storage pack in accordance with detection results by the cell voltage detection units and on/off controls the switches of the switch group individually so as to form a discharge line from a electric rechargeable cell of the group to the load driving feeding circuit.05-07-2009
20120217934Charging Management Method and Apparatus for Storage Battery - In order to reasonably adjust charging current of a storage battery according to temperature, realize quick, safe and reliable charging of the storage battery, and effectively prolong the service life of the storage battery, the present invention provides a charging management method and apparatus for a storage battery. The method comprises the following steps: monitoring discharge capacity of a storage battery, and determining discharge depth of the storage battery according to the discharge capacity and total capacity of the storage battery (S08-30-2012
20130057223BATTERY MANAGEMENT SYSTEM AND BATTERY MANAGEMENT METHOD - A battery management system (BMS) for managing discharging of a plurality of battery cells is disclosed. The battery management system comprises a battery monitoring unit, for monitoring statuses of the plurality of battery cells; and a discharge control unit, for controlling the plurality of battery cells to output a plurality of output powers to a load according to the statuses of the plurality of battery cells.03-07-2013
20130057224CONTROL SYSTEM OF BATTERY PACK AND METHOD OF CHARGING AND DISCHARGING USING THE SAME - A control system of a battery pack and a method of charging and discharging the battery pack using the method are disclosed. The control system includes a plurality of battery cells, a balancing unit that selectively balances the battery cells, and a controller that controls a balancing operation. The controller calculates an amount of charge current accumulation and measures voltages of the respective battery cells, and controls a balancing operation of at least one of the battery cells if the calculated amount of charge current accumulation is in a range of a reference capacity values.03-07-2013
20130063097MONITORING A BATTERY IN A PORTABLE ELECTRONIC DEVICE - The disclosed embodiments provide a system that monitors a battery in a portable electronic device. During operation, the system monitors a state of charge of the battery while the battery is powering the portable electronic device. Next, when the state of charge of the battery reaches a predetermined reserve capacity, the system monitors a voltage of the battery. Then, when the monitored voltage of the battery reaches a predetermined termination voltage, the system puts the portable electronic device into a low power usage state.03-14-2013
20090237034Battery operated device having power saving mode - A battery-powered electronic device comprises at least one functional circuit and a controller adapted to receive a signal representative of residual energy of a battery powering the device and to cut off operating power of the functional circuit if said residual energy is below a predetermined threshold. The controller is further adapted to detect whether a predetermined criterion is fulfilled or not, to cut off operating power of the functional circuit only if the predetermined criterion has been fulfilled for a given time interval, and to set the duration of the time interval depending on said residual energy.09-24-2009
20110127968Method Of Managing A Rechargeable Battery For An Electronic Device - A method for managing a rechargeable battery set coupled to an electronic device comprises steps of obtaining a temperature of the rechargeable battery set; obtaining a remainder capacity of the rechargeable battery set; sending a first signal to indicate the electronic device to receive power from the rechargeable battery set if the temperature of the rechargeable battery set exceeding a threshold of temperature and the remainder capacity of the rechargeable battery set exceeding a threshold of capacity. The method prevents the rechargeable battery 06-02-2011
20090309549MONITORING SYSTEM FOR MONITORING LOW VOLTAGE DISCONNECTING VALUE OF SECONDARY BATTERIES AND METHOD FOR THE SAME - A monitoring system for monitoring low voltage disconnecting value of a secondary battery includes a signal collection apparatus, an analogy-digital converter, a processor, a switch, and a controller. The signal collection is connected to a secondary battery to read voltage signals of the secondary battery at regular intervals. The analogy-digital converter is connected to the signal collection apparatus to receive the voltage signals and convert the voltage signals to digital signals. The processor is connected to the analogy-digital converter to determine whether the voltage of the secondary battery reach a low voltage disconnecting value. The switch is connected to the secondary battery to supply power to a functional unit. The controller is connected to the switch and the processor to determine status of the switch according to the determined result of the processor.12-17-2009
20120032647METHOD FOR DETERMINING COMPLETION OF CHARGE OF LITHIUM ION SECONDARY BATTERY, METHOD FOR DETERMINING TERMINATION OF DISCHARGE OF LITHIUM ION SECONDARY BATTERY, CHARGE CONTROL CIRCUIT, DISCHARGE CONTROL CIRCUIT, AND POWER SUPPLY - A method for determining completion of charge of a long-duration lithium ion secondary battery is provided.02-09-2012
20090128095CIRCUIT FOR MEASURING AND CONTROLLING DIFFERENTIAL VOLTAGES - The invention relates to circuits for managing differential voltages in series. To individually control the differential voltages of voltage sources in series, there is provided an integrated control circuit for a set of N sources in series. This circuit comprises N discharge control and measurement cells which are each produced in a separate well, insulated from the substrate and from the other wells. The cells are linked to the circuits formed in the substrate by level translation circuits having a part inside the well and a part outside the well. These circuits use transistors withstanding voltages of several tens of volts. The integrated circuits may be cascaded on an SPI bus if one wishes to control a group of k.N sources with k>1.05-21-2009
20100033135POWER STORAGE SYSTEM - An object is to improve safety. Provided is a power storage system including a battery apparatus 02-11-2010
20100033133SMALL ELECTRICAL DEVICE WITH CHARGING STATE INDICATOR - In one aspect, a handheld electric appliance includes: an oscillating electric motor or linear motor controlled by control circuitry; a battery connected to the oscillating electric or linear motor; and charge detection circuitry configured to determine a charging state of the battery. The charge detection circuitry is coupled to the control circuitry such that, in response to the charge detection circuitry determining that the charging state of the battery reaches a predetermined threshold, the control circuitry activates the oscillating electric motor or linear motor to cause noise generated by the motor to perceptibly change to indicate a threshold charging state.02-11-2010
20110215766Discharging of Batteries - Embodiments are disclosed that relate to devices for discharging batteries. For example, one disclosed embodiment provides a battery discharge device including a positive battery contact for forming an electrical contact with a positive battery terminal of a battery, a negative battery contact for forming an electrical contact with a negative battery terminal of the battery, and a battery discharge indicator including a resistive heating material in electrical communication with the positive battery contact and with the negative battery contact, and also including a reversible thermochromic indicator in thermal communication with the resistive heating material.09-08-2011
20110215767BATTERY PACK - A system and method for battery protection. In some aspects, a battery pack includes a housing, a cell supported by the housing, a circuit supported by a flexible circuit board. The circuit is operable to control a function of the battery pack.09-08-2011
20100085016METHOD AND APPARATUS FOR BATTERY GAUGING IN PORTABLE TERMINAL - A method and apparatus for battery gauging in a portable terminal are provided. In the battery gauging method, it is determined in a low-power mode whether a listening interval occurs for detecting the presence of a received signal. The remaining battery capacity is detected if the listening interval occurs. An interrupt signal is transmitted to the second processor, operating in a low-power mode, if the remaining battery capacity is less than or equal to a threshold. Upon receipt of the interrupt signal, the second processor wakes up to interrupt the power of the portable terminal.04-08-2010
20100079113BATTERY MANAGEMENT FOR OPTIMIZING BATTERY AND SERVICE LIFE - The provision of a mode in silver zinc batteries where a user can access extra capacity as an emergency reserve for times when extra capacity is needed. While this temporarily increases capacity, it does not detrimentally affect cycle life over the longer term, and it permits a silver zinc battery to essentially mimic the long term capacity and cycle life characteristics of a lithium ion battery while still affording inherent advantages associated with silver zinc batteries. In a variant embodiment, this ability to temporarily increase capacity is optimally employed at the end of a battery life cycle in a controlled “roll-off” that accords additional cycles of battery service life. In another variant embodiment, the general capability to control capacity is employed to gradually decrease the available capacity of a battery over the life of the battery, to thereby extend the battery service life.04-01-2010
20080315841Discharge State Indicator - A circuit for displaying the state of a battery that is almost discharged features a battery, an inductive load, and a controllable switch connected in series. The circuit also includes a display element connected in series with the inductive load and the battery. The controllable switch is opened when a voltage of the battery is lower than a first threshold level and is only closed again when the voltage of the battery is greater than a second threshold level. The circuit may also include a control circuit having a comparator which compares the voltage of the battery with the first threshold level and the second threshold level and triggers the controllable switch accordingly.12-25-2008
20080315840Electronic device and imaging apparatus - Disclosed herein is an electronic device having a display section, which may include, a housing section configured to house a plurality of batteries, a detection section configured to detect status of each of the plurality of batteries housed in the housing section, a selection section configured to select part of the plurality of batteries for use as a power supply of the electronic device in accordance with the status detected by the detection section, and a display control section configured to display on the display section an indication identifying the part of the plurality of batteries.12-25-2008
20100123437OVERCURRENT PROTECTION CIRCUIT OF A RECHARGEABLE BATTERY - An overcurrent protection circuit of a rechargeable battery includes a current detection terminal and an overcurrent return resistor connecting part. A voltage converted from a discharge current of the rechargeable battery is detected at the current detection terminal. The overcurrent return resistor connecting part connects the current detection terminal to overcurrent detection resistors having different resistances in accordance with a level of the voltage detected at the current detection terminal when the voltage detected at the current detection terminal is equal to or greater than a discharge overcurrent detection voltage and a discharge overcurrent state in which an overcurrent flows from the rechargeable battery is detected.05-20-2010
20110199053BATTERY PACK INPUT/OUTPUT CONTROL SYSTEM - A controller 08-18-2011
20090273315Method and apparatus for battery pre-check at system power-on - A system including at least one electronic component and a battery check circuit. When a power consumption level of the at least one electronic component is increased, the battery check circuit determines whether to provide power from a battery to the at least one electronic component by comparing a power level of the battery to a first power level.11-05-2009
20090278502Method for controlling the end of the discharge of a rechargeable battery - The method for controlling the end of discharge of a rechargeable battery according to the invention comprises determining (F11-12-2009
20090284226METHOD FOR EXCHANGING RECHARGEABLE BATTERIES - A rechargeable battery exchanging method which exchanges rechargeable batteries of an assembled battery to rebuild new assembled battery. The method includes discharging a rechargeable battery derived from an assembled battery until the rechargeable battery becomes a fully discharged state and storing the rechargeable battery in a storage region for a predetermined period of time or longer from when the rechargeable battery becomes the fully discharged state to prepare a reusable rechargeable battery. The method further includes rebuilding a regenerated assembled battery by combining the stored reusable rechargeable battery with a stored reusable rechargeable battery derived from other assembled batteries or combining the stored reusable rechargeable battery with a fresh rechargeable battery.11-19-2009
20090102425Vehicle-use power supply management apparatus - The vehicle-use power supply management apparatus includes a first function of detecting start of any of electrical loads mounted on a vehicle, a second function of detecting a battery voltage, a third function of determining whether or not load restriction should be performed on the basis of the battery voltage detected by the second function, a fourth function of making a determination of whether or not the detected electrical load can be applied with load restriction, and a fifth function of applying load restriction to the detected electrical load if a determination result of the third function and a determination result of the fourth function are affirmative. The third function is configured to make an affirmative determination if a drop of the battery voltage immediately after the start of the detected electrical load is larger than a predetermined value and the duration of the drop exceeds a predetermined time period.04-23-2009
20120293132REMAINING CAPACITY CALCULATION METHOD, BATTERY PACK PRE-SHIPMENT ADJUSTMENT METHOD, REMAINING CAPACITY CALCULATING DEVICE AND BATTERY PACK11-22-2012
20080309289Temperature and polarization voltage compensation system - A control module for a battery that powers a load includes a compensation module that adjusts a shutoff voltage based on voltage and impedance of the battery and current drawn by the load from the battery as time the load is drawing current increases. A discharge control module restricts power to the load based on the adjusted shutoff voltage.12-18-2008
20110006739MOBILE COMMUNICATION TERMINAL AND CONTROL METHOD THEREOF - A mobile communication terminal has a first wireless communication interface capable of detachably connecting an external apparatus, a determination unit for determining whether the external apparatus connected to the interface is a second wireless communication unit, a battery voltage detection unit for detecting battery voltage of a power supply unit, a charging detection unit, and a control unit for controlling, if the battery voltage detected by the battery voltage detection unit is lower than a first predetermined value while the charging detection unit detects the charging state, so as to prohibit concurrent use of the first wireless communication unit and the second wireless communication unit.01-13-2011
20130119941System and Method for Assessing ADC Operation and Voltage of a Battery Pack - Systems and methods for assessing operation of ADCs of a battery pack supplying power to a vehicle are disclosed. One example system comprises, a first ADC for determining the voltage of at least one battery cell; a second ADC for determining the voltage of a plurality of battery cells; and a controller performing an action in response to comparing an output of said first ADC to an output of said second ADC.05-16-2013
20100270975Dynamic Discharging To Detect Derated Battery Cells - A system for dynamic discharging to detected derated battery cells. In such a system, a battery cell capacity, cell voltage, as well as a time to discharge are used in combination to identify good or bad battery cells. More specifically, during a dynamic discharge cycle, an accumulated discharge capacity value is calculated and monitored by a charge level battery gas gauge via analog to digital (A/D) converters and an internal discharge time value is monitored. One of the values is assigned as a fixed value and the other value is used to identify good or bad batter cells.10-28-2010
20120105010LITHIUM ION SECONDARY BATTERY SYSTEM AND BATTERY PACK - A lithium ion secondary battery system includes: an assembled battery including a plurality of lithium ion secondary batteries; a SOC measuring unit for measuring the SOC of the lithium ion secondary battery, and a temperature sensing unit for sensing the temperature thereof; and a heating unit for heating the lithium ion secondary battery. When a SOC measured by the SOC measuring unit is lower than a preset SOC set in advance in association with discharge rate, and a temperature measured by the temperature sensing unit is lower than a preset temperature set in advance in association with discharge rate, then, a control unit sends a command to the heating unit to supply heat, so that the temperature of the lithium ion secondary battery becomes a predetermined temperature.05-03-2012
20090128096ELECTRONIC APPARATUS WITH REMAINING BATTERY POWER INDICATING FUNCTION - An electronic apparatus has a multiplicity of display units including an electronic viewfinder and a liquid crystal display (LCD) panel. The apparatus has various display modes. The remaining battery power, i.e., estimated amounts of remaining battery times relative to a current remaining battery capacity, are calculated for the respective display modes. The calculated remaining battery power is collectively displayed as the remaining battery power information on the respective display units. The remaining battery power can be obtained for all the display modes even when the battery is being charged, so that a user can always grasp the remaining battery power of any of the display modes.05-21-2009
20090184686BATTERY CONTROL SYSTEM AND METHOD - A battery control system and method for a battery of a vehicle includes a battery for supplying electrical power to a plurality of loads of the vehicle and a controller that receives a battery signal representative of a condition of the battery, an ignition key signal representative of a state of an ignition key of the vehicle, and an engine signal representative of a state of an engine in the vehicle. The controller selectively electrically connects/disconnects the plurality of loads of the vehicle and the battery based on at least one of the battery signal, the ignition key signal, and the engine signal. An interface provides information on at least one of the battery and a connection state between the plurality of loads and the battery.07-23-2009
20090045779Adjustable cut-off voltage for mobile device battery - A power management system for a mobile electronic device, including a microprocessor for continually monitoring a voltage of a battery within a mobile electronic device, wherein the device can operate in either a standalone mode powered by the battery, or in an externally powered mode, and wherein the battery is charged when the device is in external power mode, and a power manager coupled with said voltage meter, for controlling operation of the device according to the following logic: if the monitored voltage falls below an upper turn-on threshold, UTOT, during operation of the device in standalone mode, but is above a lower turn-on threshold, LTOT, then automatically turning the device off, and enabling the device to be turned on in an emergency mode, wherein at least one emergency action is enabled, and if the monitored voltage falls below LTOT during operation of the device in standalone mode, then automatically turning the device off, and preventing the device from being turned on. A method is also described and claimed.02-19-2009
20090051325AUTOMOTIVE POWER SYSTEM AND METHOD OF CONTROLLING SAME - A power source is electrically connected with a battery and an electrical load. The power source has an output voltage and provides current for the battery and electrical load. A charging voltage for the battery is determined based on temperature of the battery. An offset voltage is determined based on the provided current to the battery. The output voltage is determined based on the charging and offset voltages.02-26-2009
20090230923Battery management circuit - A non-rechargeable battery includes a housing with an opening and a cover that closes the opening in the housing. The housing and the cover define a volumetric region within the battery. The battery also includes at least one electrochemical cell and a management component, both located in the volumetric region. The management component includes programmable electrical circuitry that selectively interrupts electrical current output from the cell out of the battery based on an actively monitored state of the battery. The chemistry of the battery is Li—FeS09-17-2009
20090256527AMBULATORY MEDICAL DEVICE WITH ELECTRICAL ISOLATION FROM CONNECTED PERIPHERAL DEVICE - Methods and apparatus are provided for electrically isolating an ambulatory medical device for infusing treatment materials into a patient when the medical device is connected to a peripheral device via an active communication cable. In one embodiment, the ambulatory medical device include first circuitry controlling infusion of a medicament to the patient by a fluid conduit connectable to the patient and second circuitry controlling communications when an active communication cable is connected to the medical device. The first and second circuitry are electrically isolated using a pair of first and second isolation transceivers, where the first pair of isolation transceivers communicate a control signal and the second pair of isolation transceivers are giant magneto-resistive (GMR) transceivers that communicate at least one data signal.10-15-2009
20100033134POWER TOOL - To provide a power tool which can supply electric power again from a battery even in a case where the supply of electric power from the battery is stopped by an over-discharge detection means. A power tool 02-11-2010
20100148729BATTERY PACK - A system and method for battery protection. In some aspects, a battery pack includes a housing, a cell supported by the housing, a circuit supported by the housing and operable to control a function of the battery pack, and a heat sink in heat transfer relationship with the circuit and operable to dissipate heat from the circuit.06-17-2010
20090079397ANTI-SWELL PROTECTION CIRCUIT FOR BATTERY CELLS - The present invention provides a protection circuit and method for preventing a battery from swelling in one embodiment. The protection circuit includes: a voltage monitoring circuit that monitors a voltage across the battery; a control circuit that receives voltage information from the voltage monitoring circuit; and a discharge circuit that turns on to discharge the battery upon receiving a signal from the control circuit. The control circuit includes: a timer that sets predetermined time periods; a signaling section that outputs the signal to the discharge circuit after a first predetermined time period if the voltage stays above a first predetermined voltage threshold without charging or discharging to a load for the first predetermined time period; a sleep mode applying section that applies a sleep mode when the voltage falls below a second predetermined voltage threshold; and a load disconnecting section that disconnects the load if a wake-up command is not issued during the sleep mode for a third predetermined time period. Alternatively, the protection circuit may include a swell monitoring device that monitors a swell associated with the battery; a control circuit that receives swell information from the swell monitoring device; and a discharge circuit that turns on to discharge the battery upon receiving a signal from the control circuit.03-26-2009
20100194349ROUTER DEVICE - The router device acquires detected temperature T from a thermistor provided inside the battery box containing secondary battery that provide the power supply, and if the detected temperature T is not smaller than a threshold value Th08-05-2010
20100176766CONTROL METHOD FOR AN ACCUMULATOR BATTERY AND A HAND POWER TOOL - A control method for a system of a hand power tool and an accumulator battery is disclosed. The hand power tool is connectable to the accumulator battery via a current interface for supplying the hand power tool. The hand power tool features a data interface for communicating with the accumulator battery. Characterizing data of the hand power tool and/or data about an operating process of the hand power tool is transmitted to the accumulator battery via the interface.07-15-2010
20100181966BATTERY PACK - A cordless power tool system is provided which is driven by using a battery pack as a power source, and which has work performance equivalent to an AC power tool is driven by using a commercial power source as a power source. The cordless power tool system is configured to include: a battery pack in which DC voltage of battery modules is converted into AC voltage, to thereby output the AC voltage having a level which is comparable to that of the commercial power source; a cordless power tool which is driven by using the battery pack as a power source; an electrical cord adapter which allows power supply from the commercial power source to the battery pack for charging the battery pack; and an electrical cord adapter which allows power supply from the commercial power source to the cordless power tool for driving the cordless power tool.07-22-2010
20080315839Early detection of battery cell thermal event - A battery module for use in an electric vehicle is disclosed. The battery module includes a plurality of cells arranged in a predetermined pattern within the module. The battery module also includes an optical pyrometer arranged inside the module. The optical pyrometer is installed within the module after being tuned to detect a predetermined frequency or band of frequencies. The pyrometer will be used to detect an increase in short wave radiation density from one of the battery cells within the module wherein that battery cell has a temperature above a predetermined threshold. The optical pyrometer will be used to communicate an electric signal to a control system of the electric vehicle wherein that control system will implement a predetermined mitigation process to contain the thermal event of that one cell within the battery module.12-25-2008
20090322284BATTERY PROTECTION CIRCUIT AND PROTECTION METHOD - A battery protection circuit and protection method for a rechargeable battery is provided. The rechargeable battery includes a positive voltage pin, a negative voltage pin, and a temperature sensing pin. A resistance of the temperature sensing pin varies with the temperature of the rechargeable battery. The battery protection circuit includes a temperature and voltage detection unit and a discharging unit. The temperature and voltage detection unit is coupled between the positive voltage pin and the temperature sensing pin, and configured to determine the temperature of the rechargeable battery according to the resistance of the temperature sensing pin. The discharging unit discharges the rechargeable battery when the temperature of the rechargeable battery is higher than a predetermined temperature and stops discharging the rechargeable battery when a voltage of the positive voltage pin is lower than a first predetermined value.12-31-2009
20110037435POWER TOOL - A power tool 02-17-2011
20130134945BATTERY HEATING CIRCUITS AND METHODS USING VOLTAGE INVERSION BASED ON PREDETERMINED CONDITIONS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 05-30-2013
20110043170Secondary battery - A secondary battery that provides a usage voltage lower than a charged voltage. The secondary battery includes a chargeable/dischargeable battery cell, an external terminal electrically connected to the cell unit to charge and discharge the cell unit, and a protective circuit module including a current providing circuit. The protective circuit module electrically connects the cell unit to the external terminal. The current providing circuit includes a charge path and a discharge path that are separated from each other, a voltage drop unit dropping an output voltage of the cell unit to a usage voltage on the discharge path, and a reverse current preventing unit preventing reverse currents from flowing into the charge path and the discharge path.02-24-2011
20110115439BATTERY'S STATE-OF-CHARGE BALANCING CONTROL METHOD FOR HYBRID VEHICLE - A battery's state-of-charge (SOC) balancing control method for a hybrid vehicle is provided, in which the outside air temperature at a traveling destination is reflected to perform the control.05-19-2011
20100033132CONTROL SYSTEM OF SECONDARY BATTERY AND HYBRID VEHICLE EQUIPPED WITH THE SAME - A battery model unit includes an electrode reaction model unit based on the Butler_Volmer equation, an electrolyte lithium concentration distribution model unit analyzing a lithium ion concentration distribution in an electrolyte solution by a diffusion equation, an active material lithium concentration distribution model unit analyzing an ion concentration distribution in a solid state of an active material by a diffusion equation, a current/potential distribution model unit for obtaining a potential distribution according to the charge conservation law, a thermal diffusion model unit and a boundary condition setting unit. The boundary condition setting unit (02-11-2010
20090218989RECHARGEABLE SPLIT BATTERY SYSTEM - A battery system is split into first and second battery subsystems. When the first battery subsystem reaches a first discharge level, the first battery system is decoupled from output terminals of the battery system and the second battery subsystem is coupled to the output terminals of the battery system.09-03-2009
20100066308METHOD AND DEVICE FOR PROTECTING BATTERY OF ELECTRONIC DEVICE FROM OVERHEATING - A method for protecting a battery of an electronic device from overheating is provided. The method senses the temperature of the battery and conduct an unloading action when the temperature of the battery ascends to an unloading temperature. The method further halts the unloading action when the temperature of the battery descends to a lowest critical temperature, wherein the unloading temperature is not lower than the lowest critical temperature.03-18-2010
20100052619ENERGY SOURCE ISOLATION AND PROTECTION CIRCUIT FOR AN ELECTRONIC DEVICE - An energy source isolation and protection circuit is provided for an electronic device, such as a patient-worn or patient-carried medical device. The isolation and protection circuit includes a supply voltage rail, a reference voltage rail, an electrical load coupled across the supply voltage rail and the reference voltage rail, and an energy source for supplying a voltage to the electrical load via the supply voltage rail and the reference voltage rail. The isolation and protection circuit also includes a voltage-controlled switch architecture that is configured to detach and electrically isolate the energy source from the electrical load (and from itself) in response to the voltage of the energy source falling below a threshold voltage. The voltage-controlled switch architecture is also designed to maintain the energy source in the detached and electrically isolated state in the absence of operating voltage provided by the energy source to the voltage-controlled switch architecture.03-04-2010
20110074358Battery Protection Device which Utilizes Light Current to Control Heavy Current - A battery protection device which utilizes light current to control heavy current primarily uses an electronic control circuit of light current in combination with a large current control element, such as a relay, to protect large current recharging and discharging of a battery. The light current electronic control circuit includes three main circuits: a main control (micro control unit) circuit, a sampling circuit and a relay control circuit. The relay is primarily a latching relay, allowing the relay to have a self-locking function after operation, without continually supplying electricity to a solenoid.03-31-2011
20100090653BATTERY DEVICE - A battery device includes electric cells connected in series, resistors connected to respective electrodes of the electric cells, discharge switches for discharging voltages between the respective electrodes of each of the battery cells via the resistors, and a voltage detection and control circuit. When a detection voltage when the discharge switch is closed and not disconnected is defined as V, a detection voltage when a discharge switch is closed and disconnected is defined as V04-15-2010
20110210703Thermal Sensor Device With Average Temperature And Hot Spot Feedback - A battery system employs a plurality of PTC devices and an additional temperature sensor to provide safety and optimization features in a multi-cell battery system. The system provides both temperature fault detection and information that may be used for battery system performance optimization. A single negative temperature coefficient (NTC) thermistor and multiple PTC thermal protection devices are integrated into a battery block, and can be implemented as a single sensor package that is in thermal contact with each of the battery cells in the battery block.09-01-2011
20080252259Power supply unit and electric apparatus - Provided is a power supply unit that notifies the third person that the electric apparatus is in the state prohibiting introduction into vehicle and also make the electric apparatus in the state safely introducible into vehicle at the same time.10-16-2008
20120169292Circuit for Protecting a Thin-Layer Battery - A method for protecting a thin-layer battery, including the steps of: periodically operating the battery at a forced discharge current, which is a function of temperature; and disconnecting the battery as soon as the voltage across it reaches a threshold, said threshold being greater than its critical voltage for a maximum discharge current under a maximum temperature.07-05-2012
20110163724METHOD AND DEVICE FOR MONITORING A HYBRID VEHICLE POWER STORAGE SYSTEM - In a hybrid vehicle system comprising an electric power storage system and an electric motor, the method includes a first step of allowing the electric power storage system to be discharged: upon detecting a condition of a charge of the electric power storage system that is greater than a first threshold to optimize power consumption; and upon detecting a condition of the charge of the electric power storage system that is greater than a second threshold to increase performance.07-07-2011
20110095726Physical Key To Facilitate An Inactive Mode For A State-Of-Charge Indicator Within A Battery - The invention provides a system and battery including a state-of-charge indicator (SOCI) to monitor and display the amount of charge within the battery. The SOCI is capable of operating in a hibernate mode, an active mode, and/or a sleep mode. The battery may be manufactured, shipped and/or stored with the SOCI operating in a power-saving hibernate mode. The SOCI may exit the hibernate mode and begin operating in active mode if a physical key connected to the battery is removed. In addition, the SOCI may operate in a sleep mode while the battery is not being used to conserve power. Furthermore, the invention provides a method of making a battery including a SOCI to monitor and display the state of charge of the battery.04-28-2011
20100060237BATTERY DISCHARGE CIRCUIT AND DISCHARGE METHOD THEREOF - A battery discharge circuit, used to couple a battery to an electronic device, includes a battery protecting module and a voltage adjusting module. The battery protecting module detects an output voltage of the battery, compares the output voltage with an end voltage of the battery, and selectively discharges the battery or not in response to the comparison result. The voltage adjusting module compares the output voltage with a work voltage of the electronic device, and selectively directly outputs the output voltage or boosts the output voltage first and then outputs the boosted output voltage.03-11-2010
20100194348Systems and methods for waking up a battery system - Systems and methods for waking up a battery system (e.g., battery pack such as a smart battery pack) installed in an information handling system from a shipping mode in response to the occurrence of one of at least two detected events. The first of these of these at least two events is detection of the battery system being removed and reinstalled into operational electrical contact with the information handling system, and the second of these at least two events is the activation of a user input device provided for the battery system.08-05-2010
20110148361BATTERY SYSTEM AND METHOD FOR DETECTING CURRENT RESTRICTION STATE IN A BATTERY SYSTEM - A battery system includes a battery pack 06-23-2011
20100019733BATTERY MONITORING SYSTEM - A battery monitoring system (BMS) configured for use in measuring operating conditions of a battery or other source of electric current. The BMS may include a housing configured to include a dampening element between a shunt and connection arm in order to limit the likelihood of vibrations and other forces acting on the BMS shorting or otherwise disrupting electrical connections used to measure current through the shunt.01-28-2010
20100019732ELECTRIC CELLS FOR BATTERY PACK, BATTERY CONTROL SYSTEM, AND BATTERY CONTROL METHOD - There are provided a battery control system and a battery control method which can eliminate a management device controlling voltages of individual cells in a battery pack, resist the influence of noise, prevent an increase in size, and reduce the load on a management device. A cell for a battery pack will be interconnected with another cell to be used as a battery pack, the cell comprises unit cell 01-28-2010
20100019731Device and Method for Instantaneous Load Reduction Configuration to Prevent Under Voltage Condition - A device may include a battery and a plurality of components receiving power from the battery. A voltage of the battery is maintained above a threshold voltage by decreasing a current drawn by one of the components when the battery voltage approaches the threshold voltage.01-28-2010
20120306452SYSTEM AND METHOD FOR DISCHARGING A HIGH IMPEDANCE BATTERY - An electrochemical battery system in one embodiment includes a first electrochemical cell, a memory in which command instructions are stored, and a processor configured to execute the command instructions during a discharge cycle of the first electrochemical cell to (i) establish a first discharge voltage of the first electrochemical cell based upon a first sensed discharge voltage, and (ii) permit a second discharge voltage of the first electrochemical cell after establishing the first discharge voltage, wherein the second discharge voltage is greater than the first discharge voltage.12-06-2012
20090045780BATTERY CONTROL METHOD FOR HYBRID VEHICLES - A hybrid control module comprises a vehicle load module and a hybrid battery discharge module. The vehicle load module determines a first power based on power delivered to an accessory power module (APM). The hybrid battery discharge module determines a discharge power based on the first power and selectively controls power consumed by an inverter based on the discharge power when a state of charge of a hybrid battery is less than a first threshold and greater than a second threshold. The inverter and the APM selectively receive power from the hybrid battery.02-19-2009
20110050177Systems and methods for predicting remaining battery capacity - A system according to various aspects of the present invention predicts remaining battery capacity for a battery used by a device. The system includes a memory that stores indicia of remaining battery capacity and a plurality of predefined increments of battery capacity consumption. The system further includes a circuit that determines a duration of operating corresponding to one or more of the increments and stores in the memory a predicted remaining battery capacity, adjusted in accordance with the duration and the one or more increments. Other systems, according to various aspects of the present invention, further include a display indicating remaining battery capacity, for example, as a percentage of initial battery capacity, and/or temperature compensation.03-03-2011
20120043942SULFIDE-BASED ALL-SOLID-STATE LITHIUM SECONDARY BATTERY SYSTEM - In an all-solid-state lithium secondary battery provided with a sulfide-based electrolyte-containing layer, the production of hydrogen sulfide is effectively inhibited without deteriorating battery characteristics. A battery system (02-23-2012
20100060238Battery Management System And Method - A battery management system for managing a plurality of subsystem circuits and functions of a mobile communication device powered by a battery is disclosed. The battery management system includes a battery monitoring circuit, a user interface, and a battery management module. The battery monitoring circuit is operable to monitor a present battery capacity and generate a battery capacity signal based on the present battery capacity. The user interface is operable to receive a user-input allocation of battery capacity among the subsystem circuits and functions. The battery management module is operable to receive the user-input allocation and the battery capacity signal, and to selectively disable each subsystem circuit or function when each subsystem circuit or function has depleted its allocation of battery capacity.03-11-2010
20120056598BATTERY PACK AND METHOD OF CONTROLLING THE SAME - A battery pack including a plurality of battery cells and a method of controlling the battery pack are provided. The method includes: permanently cutting off charging and discharging paths of the battery pack; and discharging one or more of the battery cells when a condition of which satisfies a reference condition. Therefore, state of the battery pack changes from its failure state to a stable state.03-08-2012
20120206106Electrical Device and Battery Management Method Thereof - A battery management method of an electrical device, including an internal power source and a battery management unit, includes the following steps. The battery management unit detects whether the electrical device is electrically connected with an external power source. If the electrical device is electrically connected with the external power source, the battery management unit utilizes a timer to determine whether the electrical device has been electrically connected with the external power source for a predetermined time. If the electrical device has been electrically connected with the external power source for the predetermined time, the battery management unit resets the timer and controls the internal power source to discharge fast.08-16-2012
20120206107PROTECTION MODULE AND METHOD FOR MANAGING STATUS DATA OF THE PROTECTION MODULE - A protection module interposed between a chargeable/dischargeable secondary battery and a load, the protection module includes a first switching element connected to the chargeable/dischargeable secondary battery, a second switching element connected to the load, a protection unit configured to prevent over-charge and over-discharge of the chargeable/dischargeable secondary battery by switching on/off the first and the second switching elements, a storage unit configured to store status data of the chargeable/dischargeable secondary battery and threshold data pertaining to a status of the chargeable/dischargeable secondary battery, a status monitor unit configured to monitor the status of the chargeable/dischargeable secondary battery. The status monitor unit is configured to set plural storage areas in the storage unit and store the status data and a flag data indicating whether the status data is a latest status data in one of the plural storage areas.08-16-2012
20090039835BATTERY SHORT CIRCUIT MONITORING - A system measures a voltage of a battery of a user device, measures a temperature and an acceleration of the battery if a decrease in battery voltage is measured, and determines whether the battery is functioning properly based on one or more of the measured voltage, temperature, or acceleration of the battery.02-12-2009
20110089907IN-SITU BATTERY HEALTH DETECTOR AND END-OF-LIFE INDICATOR - Some embodiments provide a system that monitors a battery in a portable electronic device. During operation, the system applies a pulse load to the battery and determines an impedance of the battery by measuring a voltage of the battery during the pulse load. Next, the system assesses a health of the battery based on the impedance. Finally, the system uses the assessed health to manage use of the battery in the portable electronic device.04-21-2011
20120119707ELECTRIC CELLS FOR BATTERY PACK, BATTERY CONTROL SYSTEM, AND BATTERY CONTROL METHOD - There are provided a battery control system and a battery control method which can eliminate a management device controlling voltages of individual cells in a battery pack, resist the influence of noise, prevent an increase in size, and reduce the load on a management device. A cell for a battery pack will be interconnected with another cell to be used as a battery pack, the cell comprises unit cell 05-17-2012
20120249080AIR BATTERY SYSTEM - An air battery system that can inhibit production of hydrogen. The air battery system includes a battery cell which is provided with an air electrode, an anode containing an active material capable of releasing lithium ions, and a solid electrolyte layer and aqueous electrolytic solution layer having lithium ion conductivity which are disposed between the air electrode and the anode; a detecting device which is capable of detecting a voltage between the anode and the air electrode; and a signaling device which emits a signal when the voltage detected by the detecting device becomes 10-04-2012
20100289455BATTERY-POWERED APPARATUS, METHOD OF CONTROLLING THE APPARATUS, PROGRAM FOR IMPLEMENTING THE METHOD, AND STORAGE MEDIUM STORING THE PROGRAM - A battery-powered apparatus which makes it possible to perform battery check with accuracy irrespective of whether a battery is used as an internal battery or an external battery and make the end voltages of the internal battery and the external battery coincide with each other. It is determined whether the battery or an accessory having the battery incorporated therein has been attached to the apparatus, and a predetermined voltage threshold level is set based on the determination result. The voltage value of the battery or the accessory having the battery incorporated therein is detected, and the detected voltage value and the voltage threshold level are compared with each other to decide whether or not it is possible to drive the apparatus.11-18-2010
20120212185COMPOSITE DEVICE SYSTEM - A composite device system including: a first device including a nonvolatile memory; and a second device configured to supply a power to the first device, the second device including: a power supply circuit configured to stabilize a first power supplied from an external part into a second power lower than the first power, and to supply the second power to the first device; a communication circuit configured to receive control data from the first device; and a switch configured to switch between on and off based on the control data, and to supply the first power to the first device when the switch is on, wherein the second device receives the control data from the first device by the communication circuit when data is written into the nonvolatile memory so that the switch is turned on and the first power is supplied to the first device.08-23-2012
20120161715CELL BALANCING CIRCUIT, METHOD OF DRIVING THE SAME, AND BATTERY MANAGEMENT SYSTEM THAT INCLUDES THE CELL BALANCING CIRCUIT - A battery management system (BMS) includes a cell balancing circuit. The cell balancing circuit includes a reference voltage generator that is coupled in parallel to at least one battery and generates a reference voltage, a comparator that compares a voltage output from a terminal of the battery with the reference voltage output from the reference voltage generator, and a transistor that discharges a current from the battery, when turned-on in response to a signal outputted from the comparator, through a discharge resistor coupled in series to the battery.06-28-2012
20100207585RESERVING POWER FOR ELECTRONIC DEVICES - The present invention provides way to reserve power for electronic devices such as mobile devices. Specifically, under the present invention, a user can establish and/or change a setting/threshold corresponding to an amount of (battery) power available to the electronic device to be held in reserve. The setting can be a percentage of total available power (e.g., n %). Once set, this amount of power is held in reserve and is unavailable for use by the electronic device. Before to the total power available to the device is reduced to the amount of power set by the user (e.g., 1-n %), an alert will be issued. If the user wishes to use the power held in reserve, the user can input a previously established reserve power access code amount that will make the reserve power available to the electronic device.08-19-2010
20090058367ADAPTIVE BATTERY ESTIMATOR AND METHOD - An adaptive battery estimation control system includes a fixed and adaptive battery estimators effective for a battery parameter estimations across a wide range of dynamic battery operational conditions.03-05-2009
20100141215RECHARGEABLE BATTERY PROTECTION INTEGRATED CIRCUIT DEVICE, RECHARGEABLE BATTERY PROTECTION MODULE USING THE RECHARGEABLE BATTERY PROTECTION INTEGRATED CIRCUIT DEVICE, AND BATTERY PACK - A rechargeable battery protection integrated circuit device, includes a short circuit detecting circuit configured to convert a discharge electric current of a rechargeable battery to a voltage value and detect a short circuit state of the rechargeable battery when the converted voltage value is equal to or greater than a designated short circuit detecting voltage; a discharge control terminal configured to output a control signal when the short circuit state is detected by the short circuit detecting circuit, the control signal being configured to stop a discharge of the rechargeable battery; and an overcharge detecting circuit configured to detect an overcharge of the rechargeable battery, wherein the short circuit detecting circuit includes a short circuit detecting voltage change part, the short circuit detecting voltage change part being configured to change the short circuit detecting voltage when the overcharge is detected by the overcharge detecting circuit.06-10-2010
20100270976BATTERY SYSTEM FOR VEHICLE - A battery system for a vehicle warms up a battery, which is mounted to charge and discharge. A charge/discharge unit is located closer to a battery set than an inverter unit is. When the battery set cannot produce a required output power because of its low temperature, a control unit controls the charge/discharge unit to charge and discharge and also controls a blower to deliver heat transfer medium, which receives heat generated from the charge/discharge unit, to the battery set, so that the battery set is warmed up to produce the required output power at earlier time.10-28-2010
20120187916Virtual Charge for Electric Vehicles - The described method and system provides for dynamic adjustment of the lower charge threshold of an electrically-powered vehicle to allow a fuel-depleted vehicle also low on battery charge to continue to be operated. The vehicle's telematics unit monitors the fuel level and charge level via the vehicle bus or other vehicle resources to determine if the vehicle is running low on fuel and electric charge. If the telematics unit determines that the fuel is depleted and the charge level is approaching, meets or falls below the lower threshold, the telematics unit communicates the vehicle fuel status and vehicle position to a call center along with vehicle identification data. The call center determines the amount of charge required to reach one or more local fueling stations or other points of interests and propose destination recommendations to the driver. The driver may then select one of the recommendations, and the call center transmits a new lower charge threshold to the vehicle.07-26-2012
20120187917BATTERY CONDITION ESTIMATING METHOD AND POWER SYSTEM - The invention provides a battery condition estimating method and a power system permitting to estimate aging level or discharge ability of a battery in high precision by reducing transient changes of response voltages caused by repetitive discharges. A recovery time after a discharge is prolonged with a number of times of discharge and a relationship between the number of times of discharge and the recovery time is approximated by using an exponential function in the battery condition estimating method of the invention. A discharge pattern as shown in FIG. 07-26-2012
20120229095CONTROL APPARATUS, CONTROL METHOD, AND EXECUTION APPARATUS - A control apparatus includes: a detection section configured to detect whether a rechargeable battery is in a fully charged state or not, and if the detection section detects that the rechargeable battery is in the fully charged state, an execution control section configured to give an instruction to an execution apparatus to execute a holdable task using electric power supplied from the rechargeable battery.09-13-2012
20120229094BATTERY MONITORING CIRCUIT AND BATTERY MONITORING SYSTEM - The battery monitoring circuit includes a first switch element, a second switch element, a third switch element. The battery monitoring circuit includes a first output capacitor connected to the second end of the first switch element at a first end. The battery monitoring circuit includes a first output controlling switch element connected between a second end of the first output capacitor and the ground. The battery monitoring circuit includes an AD converter that analog-to-digital converts a signal responsive to a voltage at an output terminal between the second end of the first output capacitor and the first output controlling switch element. The battery monitoring circuit includes a controlling circuit that controls turning the first to third switch elements and the first output controlling switch element and controls the AD converter.09-13-2012
20100327815BATTERY PACK - A system and method for battery protection. In some aspects, a battery pack includes a housing, a cell supported by the housing, a circuit supported by a flexible circuit board. The circuit is operable to control a function of the battery pack.12-30-2010
20110001457Battery charge status indicator for user terminal device - The invention relates to an indicator device for displaying a battery charge status of an electronic battery powered user terminal device, which is adapted to provide a plurality of applications to a user. The user terminal device comprises a plurality of electric components performing the applications, a battery supplying power to the electric components and a power supply control deactivating the electric components of individual applications at a predetermined battery charge status respectively. The indicator device comprises a detection device for detecting the battery charge status of the user terminal device and a display for displaying the battery charge status. A charging state arrangement is provided for determining and displaying an application-specific battery charge state of at least one of the applications.01-06-2011
20120081079EMERGENCY DISCHARGE FEATURE - A system includes a channel over which to charge a battery, control circuitry, and a discharge circuit associated with the channel to discharge the battery. The discharge circuit is configured for discharging the battery at a current that exceeds an operational current through the channel. In response to a fault in the battery, the control circuitry is configured to disconnect the battery from a signal path in the channel and to produce an electrical connection to enable discharge of the battery through the discharge circuit.04-05-2012
20100231170ADAPTIVE LOW VOLTAGE DISCONNECT CONTROLLER, METHOD OF PROTECTING A BATTERY AND A POWER SYSTEM MANAGER - Provided herein is a controller for a low voltage disconnect (LVD), a method of protecting and providing a maximum or substantially maximum battery reserve coupled to a DC load bus and a power system manager. In one embodiment, the LVD controller includes an adaptive disconnect system configured to determine a variable LVD threshold voltage value and instruct the LVD to disconnect a battery reserve from a DC load bus based thereon. The variable LVD threshold voltage is determined based on a current of the battery reserve during a battery-discharge event.09-16-2010
20110260692Estimation Method for Residual Discharging Time of Batteries - An estimation method for residual discharging time of batteries includes the steps of: providing a set of battery-discharge-current intervals and a set of battery-discharge equations, setting discharge time of each battery-discharge-current intervals zero; detecting a discharge current, voltage and time of batteries; judging whether the discharge current exceeding all of the battery-discharge-current intervals; selecting one of the battery-discharge-current intervals and the associated battery-discharge equation according to the detected discharge current; calculating an estimation of residual discharging time; accumulating and recording the discharge time; judging whether the discharge voltage being lower than a predetermined value and calculating an estimation error of the residual discharging time; adjusting parameters of the battery-discharge equation for reducing the estimation error of the residual discharging time if the estimation error is greater than a predetermined error value.10-27-2011
20120280661BATTERY PROTECTION CIRCUIT AND METHOD OF CONTROLLING THE SAME - A battery protection circuit and a method of controlling the same is disclosed. The battery protection circuit includes: a battery management system for controlling charging and discharging of a battery; and a reset control circuit for controlling a reset operation of the battery management system. The battery management system includes: a reset terminal to which a first voltage for determining reset is applied; and a reset prevention terminal to which a second voltage for determining reset prevention of the battery management system is applied. The reset control circuit is connected between the reset terminal and the reset prevention terminal to control the applying of the first voltage to the reset prevention terminal. Accordingly, an unintended reset operation of the battery management system may be prevented.11-08-2012
20100188050BATTERY INTERNAL SHORT-CIRCUIT DETECTION APPARATUS AND METHOD, AND BATTERY PACK - A battery internal short-circuit detection apparatus includes: a voltage detection unit for detecting a terminal voltage of the battery; a current detection unit for detecting a discharging current of the battery; a voltage drop and recovery detection unit for detecting a momentary voltage drop of the battery and a recovery from the voltage drop, in response to a result of detection performed by the voltage detection unit; and a determination unit for determining that an internal short circuit has occurred, when a maximum value of the discharging current detected by the current detection unit between the voltage drop and the recovery is equal to or lower than a threshold current.07-29-2010
20130169234METHOD AND SYSTEM FOR CONTROLLING ENERGY STORAGE DEVICE - A system and method of use including a controller responsive to a deviation in absolute value or relative slope and operable to terminate a discharge operation in an energy storage device is provided. The absolute value or relative slope is determined at sampling frequency based upon a combination of measured operating parameters, for example, potential and current. Any deviation in the absolute value or relative slope indicates that a threshold limit in the available energy of the system has been reached, for example when active materials in the device are at a point of depletion, indicating a need to cease the discharge operation. The system and method operate on a real-time basis, providing instantaneous SOH information with regard to the device.07-04-2013
20080224666Electric Hand-Held Power Tool with a Shut-Off Delay Device - The invention relates to a handheld electrical machine tool having at least one electrical drive, at least one electrical device requiring electrical energy for its operation, a shut-off delay apparatus for the electrical drive and/or the electrical device and having at least one rechargeable battery for the electrical supply to the drive and the electrical device. Provision is made for the handheld electrical machine tool to have an exhaustive discharge protection apparatus (09-18-2008
20130169236ELECTRIC 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.07-04-2013
20120249079COMPLIANT TIP THERMISTOR FOR AN ENERGY STORAGE SYSTEM - An energy storage system comprising at least one energy storage module adapted to supply electrical energy to a hybrid vehicle. The energy storage module comprises an enclosure, at least one battery array located within the enclosure, and an energy storage controller module located within the enclosure and electrically connected to the battery array. The energy storage module further comprises a compliant tipped thermistor which may be installed within a flexible clip. The thermistor is positioned to monitor the temperature of one or more of the batteries within the energy storage system.10-04-2012
20130169235POWER PACK REMAINING CAPACITY LEVEL DETECTION - Systems and methods to detect particular levels of remaining battery capacities. A ratio of changes in battery output voltage over changes in battery capacity (ΔV/ΔC) is calculated. Detected rises in the value of this ratio are used to detect that a battery has a remaining capacity level that is near depletion. In a certain temperature range, the ΔV/ΔC ratio is used to provide an indication that the battery is approaching a low remaining capacity state. In another temperature range, an increase in the ΔV/ΔC ratio indicates that the battery has reached a mid-range remaining capacity level.07-04-2013
20130175999SYSTEMS AND METHODS FOR DE-ENERGIZING BATTERY PACKS - Systems and methods for de-energizing battery packs in vehicles that receive at least a portion of their motive power from electricity generated from a battery are provided. By way of example, one embodiment includes a battery de-energizer that is configured to electrically couple to a port or receptacle, such as the service disconnect receptacle, on the vehicle and discharge the electrical energy stored in the battery pack. Another embodiment includes a battery management unit (BMU) designed to monitor one or more sensors to determine if a crash has occurred. If a crash is determined, the BMU electrically couples a battery de-energizer circuit to the battery pack to discharge the electrical energy stored in the battery pack.07-11-2013
20130113436CHARGE CONTROLLING METHOD AND DISCHARGE CONTROLLING METHOD, CHARGING APPARATUS CONTROLLER AND DISCHARGING APPARATUS CONTROLLER, AND CHARGE CONTROLLING PROGRAM AND DISCHARGE CONTROLLING PROGRAM - Disclosed herein is a charge controlling method, wherein, when charging into at least one of a plurality of charging apparatus each including a battery is to be started, if it is detected that at least one of the charging apparatus is connected or disconnected, then charging into all of the charging apparatus is stopped.05-09-2013
20130113437CONTROL APPARATUS, CONTROL METHOD AND CONTROL SYSTEM - Disclosed herein is a control apparatus, including: a discrimination section configured to discriminate a plurality of battery units which are to share and output electric power required by a load; and a control section configured to carry out discharge control for the battery units in response to a situation of each of batteries which the battery units individually have.05-09-2013
20130127424DISCHARGE SYSTEM - A discharge system includes: a secondary battery pack; a discharge device; and an application software running on a personal computer connected to the discharge device. The application software receives total battery voltage information, temperature information, and over-discharge information of the secondary battery pack through the discharge device, determines deterioration of the secondary battery pack based on the informations, and displays results of the determination. Further, the application software instructs the discharge device to terminate the discharge when the temperature in the pack exceeds a predetermined value and/or an over-discharge is detected.05-23-2013
20130127423BATTERY PACK AND METHOD OF CONTROLLING CHARGE-AND-DISCHARGE OF BATTERY PACK BY ITS THERMOELECTRIC PROPERTY - A battery pack and a method for controlling charge-and-discharge of the battery pack by its thermoelectric property are provided, in which the battery pack has a plurality of thermal regions divided by different ranges of temperature. The battery pack includes a plurality of parallel-connected battery groups and a plurality of variable resistances. The parallel-connected battery groups are located in the thermal regions respectively, and each of the parallel-connected battery groups includes batteries connected in parallel. The variable resistances are disposed between two parallel-connected battery groups.05-23-2013
20130134946POWER CONTROL APPARATUS AND POWER CONTROL METHOD - A power control apparatus includes: a control unit that controls discharged power of a first battery and discharged power of a second battery; and a power acquisition unit that acquires a total power to be supplied from the first and second batteries to a load device connected to the first and second batteries. The control unit: in a first period, changes the discharged power of the first battery according to a change in the acquired total power, and changes the discharged power of the second battery toward a first direction in which the discharged power of the second battery approximates the discharged power of the first battery; and, in a second period after the first period, changes the discharged power of the second battery according to the change in the acquired total power, and changes the discharged power of the first battery toward a second direction opposite the first direction.05-30-2013
20110221396ENERGY CONSUMPTION OUTPUT DEVICE AND METHOD FOR OUTPUTTING A STILL REMAINING USABILITY - An energy consumption output device for outputting the still remaining usability of an electrical consumer which may be connected to an energy storage. The energy consumption output device has the following features: a unit for providing a residual capacity of the electrical energy storage; a power consumption ascertainment unit which is configured to ascertain a power consumption rate in an instantaneous operating mode of the electrical consumer; and an output unit which is configured to determine information concerning the maximum usability for a user of the energy consumption output device with regard to the instantaneous operating mode, using the provided residual capacity and the ascertained power consumption rate, and to output this information.09-15-2011
20110221395ELECTRONIC APPARATUS - When discharge power calculated based on a current value detected by a current detector is smaller than expected maximum power, which is the maximum power expected in an actual operation, a discharge efficiency at the expected maximum power is set as a discharge efficiency used for remaining capacity calculation. This ensures that a remaining capacity based on power required for a photographing operation can be detected.09-15-2011
20100315044System for Preventing Deep Battery Discharge - A battery management system for managing the voltage of a battery cell, such as a lithium ion battery, is disclosed. The battery management system comprises a semiconductor switch coupled to the battery cell, wherein the semiconductor switch is in an on condition when the voltage across the battery cell exceeds a first threshold voltage, and a microprocessor coupled to the semiconductor switch, wherein the microprocessor monitors the voltage across the battery cell when the semiconductor switch is on, and turns itself off when the when the monitored voltage is less than a second threshold voltage, thereby preventing further current drain from the battery cell.12-16-2010
20130154572POWER STORAGE SYSTEM - An integration control device of a power storage system obtains pieces of status information of power storage devices from control devices of unit modules, compares the obtained pieces of status information with one another, and performs driving control of an electrical load based on a worst value of the pieces of status information.06-20-2013
20110309800BATTERY MAINTENANCE DEVICE WITH THERMAL BUFFER - A battery maintenance device configured to maintain a storage battery. An electrical connection couples the battery maintenance device to the storage battery. Maintenance circuitry couples to the battery through the electrical connection and performs maintenance on the battery. The maintenance circuitry includes an electrical load configured to draw an electrical current from the battery. The electrical current causes the electrical load to heat. A phase change material is thermally coupled to the load. The phase change material has a specific heat index which has a non-linear relationship to temperature to thereby reduce a rate of change in temperature of the electrical load.12-22-2011
20130187616Battery Discharge System and Method of Operation thereof - A battery based power supply assembly is disclosed. The system comprises a discharge initiating device and a plurality of battery modules electrically connected with one another. Each of the battery modules comprises a plurality of battery cells, a discharge load connected in series with the battery cells, a switch coupled between the battery cells and the discharge load, a temperature sensor, and a controller adapted for placing the switch in its electrically connected state upon being driven by the discharge initiating device. The invention further provides a safe method of draining the energy from the power supply assembly disclosed herein.07-25-2013
20120019211PROTECTION OF A THIN-LAYER BATTERY - A method for protecting a thin-layer battery connected to an intermittent load including the steps of periodically operating the battery at its maximum discharge current, and disconnecting the battery as soon as the voltage across it reaches a threshold value greater than its critical voltage for the maximum discharge current.01-26-2012
20130193929Battery with at least two electrochemical energy converters and method of operating said battery - A battery with a converter including at least two electrochemical energy converters provided to convert chemical energy into electrical energy and to supply electrical energy particularly to a consumer has the energy converters electrically connected to one another. The converter arrangement includes two configuration connectors of different polarity at which a configuration voltage is present, and the configuration voltage corresponds to the electrical voltage of the converter. Two battery connectors of different polarity are also included and make the electrical connection to the consumer. The battery connectors are electrically connected to the configuration connectors The battery also includes a device connected at least indirectly to the configuration connectors which can be converted from a first state into a second state. In the first state, the configuration connectors are electrically insulated from one another and in the second state they are electrically connected to one another.08-01-2013
20120038322Rechargeable Battery Management - Systems and methods for adjusting sampling and switching rates of a battery management system are provided. For example, a rate at which different battery cells of a battery cell stack are in communication with an analog to digital converter may be adjusted in response to conditions of a battery cell.02-16-2012
20130200855System and Method for Discharging a Battery in a Vehicle after a Crash - In one embodiment, a discharge control system for a vehicle includes an energy storage device supported by the vehicle, a switch, a first load selectively connectable to the energy storage device by the switch, a memory in which program instructions are stored, and a controller operatively connected to the switch and the memory and configured to execute the program instructions to control the switch to a condition in which the energy storage device is operatively connected to the first load based upon a predetermined rate of heat generation of the energy storage device.08-08-2013
20130207616BATTERY SYSTEM, CONTROLLING METHOD OF THE SAME, AND POWER STORAGE SYSTEM INCLUDING THE BATTERY PACK - A battery system, a method of controlling the battery system, and an energy storage system including the battery system are disclosed. The method of controlling the battery system includes steps of selecting one of the plurality of batteries by using a multiplexer; measuring a voltage of the selected battery; and calculating a charging capacity of the battery based on the measured voltage. Accordingly, cell balancing may be efficiently performed.08-15-2013

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