Patent application number | Description | Published |
20110117396 | Battery Pack and Method of Preventing Cap Disassembly or Cell Replacement in the Battery Pack - A battery pack having a function for preventing operation of the battery pack when an abnormal replacement of a battery cell is detected or preventing a use of the battery pack in which a cap has been removed. The battery pack generates an encryption code and writes the encryption code to data flash when a battery cell is normally discharged according to a first voltage, and if an abnormal power-on reset is detected on the battery cell, the battery pack may check the stored encryption code to a second encryption code generated upon power-on reset. If the codes do not match, firmware of the battery pack is deleted and/or a fuse is blown, making it is possible to prevent the battery pack from being re-used when the battery cell has been replaced or in which a cap has been removed. | 05-19-2011 |
20110121789 | Battery pack and method of controlling charging of battery pack - A battery pack includes a battery cell, a charge-blocking unit, a voltage sensing and balancing circuit, and a microcomputer, the microcomputer including a controller that detects at least one selected from the group of abnormal analog-to-digital conversion, abnormal voltage, and abnormal temperature of the battery cell, the controller outputting a charge control signal to the charge-blocking unit to inhibit charging of the battery cell. | 05-26-2011 |
20110129697 | SECONDARY BATTERY - A secondary battery includes a protection circuit module (PCM) electrically connected to a bare cell. The bare cell is wrapped with a first sheet, a water permeable second sheet placed on the first sheet, and a submergence label placed between the first sheet and the water permeable second sheet. The submergence label indicates if the bare cell has been exposed to moisture. The label sheet further has a stacking structure, wherein the second sheet is placed on top of the first sheet and the submergence label is interposed between the first sheet and the second sheet. Accordingly, it is possible to determine whether a user has disassembled, modified, or reused the battery and it is possible to easily verify whether or not the secondary battery has been submerged in a liquid due to a user's carelessness or mistake. | 06-02-2011 |
20110156654 | PROTECTION 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 |
20110305926 | BATTERY PROTECTING CIRCUIT, METHOD OF CONTROLLING THE SAME, AND BATTERY PACK - A battery pack is disclosed. The battery pack has an analog front end which senses if a failure occurs in a microcontroller, and interrupts charging and discharging of the battery in response to the failure. | 12-15-2011 |
20120025615 | POWER SUPPLY APPARATUS - A power supply apparatus is disclosed. The power supply apparatus includes a rechargeable battery and a battery management system (BMS) for managing charging and discharging of the battery. The power supply apparatus is configured to supply an operating power to the BMS from an external power of an external power source when the external power source is in a normal state and is capable of supplying the external power to a load through the power supply apparatus. The power supply apparatus is further configured to supply the operating power to the BMS from electric energy stored in the battery when the external power source is in a state different from the normal state and not capable of supplying the external power to the load through the power supply apparatus. | 02-02-2012 |
20120025744 | BATTERY PACK AND ELETRICAL TRANSFER APPARATUS INCLUDING SAME - A battery pack includes: a first battery cell group including at least one high capacity battery cell; and a second battery cell group including at least one high output battery cell and being coupled in parallel to the first battery cell group, wherein the high output battery cell is configured to output a greater current than the high capacity battery cell, the high capacity battery cell is configured to store a greater amount of electric energy compared to the high output battery cell, and the battery pack is configured to operate in one of operational modes including: a high capacity mode for outputting electric energy stored in the first battery cell group; a high output mode for outputting electric energy stored in the second battery cell group; and a mutual charge mode for charging the first battery cell group or the second battery cell group. | 02-02-2012 |
20120025963 | VEHICLE USING MOTOR AND METHOD OF CONTROLLING THE SAME - A vehicle using a motor, and a method of controlling the vehicle. The vehicle includes a battery for providing electric energy to the motor, a remaining energy-amount detector for detecting an amount of remaining energy of the battery, a distance calculator for calculating an available moving distance of the vehicle corresponding to the amount of remaining energy and a weight applied to the vehicle, and a display unit for displaying the available moving distance. | 02-02-2012 |
20120029744 | ELECTRIC VEHICLE AND METHOD OF CONTROLLING THE SAME - An electric vehicle and a method of controlling the electric vehicle are disclosed. In one embodiment, the electric vehicle includes i) a battery configured to provide electric energy to the motor, ii) a remaining energy-amount detector configured to detect a remaining energy-amount of the battery and iii) a manipulation unit configured to receive target information from a user. The vehicle also includes a guide information generator configured to generate driving guide information based at least in part on the remaining energy-amount of the battery and the target information and a display unit configured to display the driving guide information. | 02-02-2012 |
20120032639 | BATTERY PACK, CHARGER, AND CHARGING SYSTEM - A battery pack, a charger, and a charging system. The battery pack includes a rechargeable battery, and a protection circuit to control charging and discharging of the battery, wherein the protection circuit includes a micom to output an operating state signal representing an operating state of the micom and a malfunction transferring unit to transfer information on whether the battery is malfunctioning based on the operating state signal. Accordingly, when an error is detected by the protection circuit of the battery pack, charging is stopped, and thus the battery pack may be stably charged. | 02-09-2012 |
20120032641 | BATTERY PACK AND METHOD OF CONTROLLING THE SAME - A battery pack and a method of controlling the same is disclosed. The battery pack determines a cell deviation after the battery pack is fully charged or over-discharged, and thus the battery pack can reduce the cell deviation by performing cell balancing. | 02-09-2012 |
20120032643 | BATTERY 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 |
20120035874 | BATTERY PACK AND METHOD OF CONTROLLING THE SAME - A battery pack includes a battery cell; a protective circuit for protecting the battery cell; a first analog/digital (A/D) converter for converting a voltage of the battery cell into a digital value and outputting the digital value as a first voltage value; a second A/D converter for converting the voltage of the battery cell into another digital value and outputting the another digital value as a second voltage value; and a comparator for comparing the first voltage value with the second voltage value and determining whether A/D conversion of the battery pack is normal or defective according to the comparison. | 02-09-2012 |
20120056586 | SECONDARY BATTERY PACK - A secondary battery pack is described that is rechargeable and has a large capacity. The secondary pack has multiple battery units and at least one controller. Each battery unit of the battery pack includes a cell unit and a cell balancing system. In one embodiment, the cell balancing system has at least three detachable connections for connecting the cell balancing system to the cell unit, the controller or to other cell balancing units. The connections allow the cell balancing systems to be detached from the battery units and reused. | 03-08-2012 |
20120056598 | BATTERY 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 |
20120179399 | BATTERY SYSTEM AND ENERGY STORAGE SYSTEM INCLUDING THE SAME - A battery system having components with reduced maximum voltage tolerance requirements is disclosed. The battery system includes a battery pack with battery modules, and measuring units, which are connected to the battery modules. The measuring units have first analog front ends (AFEs) for monitoring the at least two battery modules. Each first AFE is configured to transmit information related to the monitored characteristic via an isolator to a processor configured to control the battery pack based on the transmitted information. The isolator receives the transmitted information from an AFE which is not connected to the battery module having the least electric potential or to the battery module having the greatest electric potential. | 07-12-2012 |
20120228946 | BATTERY SYSTEM, CONTROLLING METHOD OF THE SAME, AND ENERGY STORAGE SYSTEM INCLUDING THE BATTERY SYSTEM - A battery system includes a rack having a plurality of battery tray positions, a battery tray in a corresponding battery tray position among the battery tray positions, and a system management unit electrically coupled to the battery tray. Each of the battery tray positions is associated with position information, and the battery tray has an identifier. The system management unit is configured to receive and store the position information and the identifier, and to determine the corresponding battery tray position of the battery tray in accordance with the identifier and the position information. | 09-13-2012 |
20120280661 | BATTERY 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 |
20120280694 | BATTERY SYSTEM - A battery system is disclosed. In one embodiment, the system includes i) a plurality of battery modules each of which is configured to store power, wherein each battery module is electrically connected to at least one other battery module and ii) a plurality of management units configured to monitor states of the battery modules. Each management unit is electrically connected to at least one other management unit and one or more of the battery modules. Each management unit may include: at least one measuring unit configured to perform the monitoring and a receiving unit configured to i) receive measurement data including the monitoring results from the measuring unit via a first communication protocol and ii) receive measurement data from another receiving unit included in another management unit via a second communication protocol different from the first communication protocol. | 11-08-2012 |
20120306453 | SECONDARY BATTERY CHARGING METHOD AND DEVICE - A method of charging a secondary battery and a charging device that can improve stability and extend the life span of the battery. When the secondary battery includes a plurality of cells, the charging method is changed when a voltage imbalance from 100 mV to 300 mV occurs among the cells. In that range, the charging method changes from a constant current-constant voltage charging method to a pulse-charging method. When the voltage imbalance is 300 mV or more, the electricity path is blocked, shutting down the battery. When the voltage imbalance is 100 mV or less, the constant current-constant voltage charging method is maintained. The method and device also stop charging when the battery reaches full charge. | 12-06-2012 |
20130069429 | BATTERY MANAGING APPARATUS, BATTERY PACK, AND ENERGY STORAGE SYSTEM - An energy storage system having a number of trays with each tray having a number of battery cells in which power is controllably stored and discharged. A first Battery Management System (BMS) is electrically coupled to a tray contained in a rack of trays. A second BMS is electrically coupled to and controls the first BMS. The first BMS includes a control unit electrically coupled to and controlling the battery cells. It further includes a switch unit electrically coupled to the control unit and selectively applying driving power according to a control signal from the second BMS. | 03-21-2013 |
20130113280 | APPARATUS AND METHOD FOR MANAGING BATTERY CELL, AND ENERGY STORAGE SYSTEM - An energy storage system which balances cell voltages and a method of balancing cell voltages are disclosed. The system and method use a temperature of balancing resistors to determine a time for the balancing resistors to be selectively connected across battery cells so as to balance the battery cells. | 05-09-2013 |
20130130068 | BATTERY SYSTEM, METHOD OF CONTROLLING THE BATTERY SYSTEM, AND ENERGY STORAGE SYSTEM INCLUDING THE SAME - A battery system, a method of controlling the battery system, and an energy storage system including the battery system. The battery system includes: a plurality of tray battery management systems (BMSs) controlling at least one battery tray formed of a plurality of battery cells; and a rack BMS transmitting a synchronization signal to the tray BMSs to measure monitoring data, wherein the tray BMSs transmit the synchronization signal to a next tray BMS, measure monitoring data of the at least one battery tray via the transmitted synchronization signal, and transmit the measured monitoring data to the rack BMS. Accordingly, measurement accuracy of battery voltages and battery charging/discharging currents may be improved, and also, calculation accuracy of state of charge (SOC) and state of health (SOH) may be improved. | 05-23-2013 |
20130141106 | CIRCUIT FOR MEASURING VOLTAGE OF BATTERY AND POWER STORAGE SYSTEM USING THE SAME - A circuit for measuring voltage of a battery and a power storage system using the same are disclosed. According to one aspect, the circuit includes a switching element connected to the battery and configured to output a first signal at a first voltage level. The switching element is configured to be turned-on in response to a voltage measuring control signal. The circuit also includes a voltage conversion circuit connected to the switching element. The voltage conversion circuit is configured to output a second signal at a second voltage level that is proportional to the first voltage level. An analog-digital converter is configured to receive the second signal and convert the received second signal into a digital signal. A controller is configured to transfer the voltage measurement control signal to the switching element, and receive the digital signal from the analog-digital converter. | 06-06-2013 |
20130144547 | APPARATUS FOR CONTROLLING BATTERY PACK, AND ENERGY STORAGE SYSTEM INCLUDING THE APPARATUS - An apparatus for controlling a battery pack and an energy storage system including the apparatus are disclosed. In one embodiment, the battery pack includes at least one battery tray each including one or more battery cells. The apparatus may include an open circuit voltage (OCV) calculator and a state of charge (SOC) estimator. The OCV calculator may receive OCV measurement values of the battery cells of each battery tray when the power of the battery pack is turned on, and calculate a final OCV of the battery cells based at least in part on the OCV measurement values. The SOC estimator may extract an SOC value corresponding to the final OCV from an SOC table and estimate the extracted SOC value as an initial SOC. | 06-06-2013 |
20130151227 | APPARATUS FOR SIMULATING BATTERY SYSTEM - A battery system simulation apparatus that enables a battery system to be stably driven by using simulation data. The battery system simulation apparatus includes a voltage simulator that outputs an imaginary simulation voltage corresponding to a battery included in a battery system, to a battery management unit for controlling the battery, and a simulation verification unit that receives control results of the battery which is generated in dependence upon the imaginary simulation voltage. The control results are transmitted by the battery management unit. | 06-13-2013 |