Samsung Sdi Co., Inc.

Se-Sub Sim

Jin-Wan Kim

Susumu Segawa

Han-Seok Yun

Eui-Jeong Hwang

Jong-Woon Yang

Beom-Gyu Kim

Segawa Susumu

Masami Omagari

Young-Shin Cho

Yong-Dai Lee

A battery pack includes at least one battery cell, a microcomputer having a first voltage measuring terminal, a second voltage measuring terminal, and a reference voltage output terminal, the microcomputer being configured to control recharge and discharge of the at least one battery cell by detecting an abnormality of a reference voltage at the reference voltage output terminal in accordance with first and second voltages at respective first and second voltage measuring terminals, a voltage distribution unit connected between the reference voltage output terminal and a ground, the voltage distribution unit being configured to distribute voltage and to output to the microcomputer a medium voltage as the first voltage, and a voltage measuring unit connected between the reference voltage output terminal and the ground, the voltage measuring unit being configured to output to the microcomputer a forwarding direction voltage of a diode as the second voltage.

Battery pack and method of controlling the same

A battery pack includes a secondary battery; and a protection device including: a measurement unit coupled to the secondary battery and configured to measure a temperature and a voltage of the secondary battery; a temperature estimation unit coupled to the measurement unit and configured to estimate a future temperature of the secondary battery; and a charging/discharging unit coupled to the secondary battery and configured to adjust a current or an input voltage applied to the secondary battery based on the future temperature and the voltage of the secondary battery.

Protection apparatus for secondary battery

A controller of a power storage system includes a voltage measuring device configured to be electrically coupled to at least one cell and to generate first voltage data, the first voltage data comprising a first voltage value and a first voltage measurement time of a voltage of the at least one cell, and a current measuring device configured to be electrically coupled to the at least one cell and to generate first current data, the first current data comprising a first current value and a first current measurement time of a current through the at least one cell, the first voltage measurement time corresponding to the first current measurement time in a first measuring period, a battery management system configured to generate a clock signal transmitted to the voltage measuring device and the current measuring device to synchronize the first voltage data and the first current data in a first transmission period of the first measuring period.

Battery management system and method for synchronizing voltage and current of battery

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.

Secondary battery pack

A battery pack and a power generation circuit in the battery pack are disclosed. The battery pack includes a battery cell unit including battery cells connected in series, a charge/discharge switch connected between the battery cell unit and charge/discharge terminals, a charge/discharge controller controlling the charge/discharge switch to charge or discharge the battery cell unit, and a voltage converter electrically connected in parallel to the charge/discharge switch and dropping a voltage of the battery cell unit, and outputting the dropped voltage as power of the charge/discharge controller.

Battery pack and power generation circuit in battery pack

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.

Battery system, controlling method of the same, and energy storage system including the battery system

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.

Secondary battery

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.

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.

Battery pack and eletrical transfer apparatus including same

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.

Battery protecting circuit, method of controlling the same, and 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.

Protection circuit for battery pack

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.

Power supply apparatus

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.

Battery pack, charger, and charging system that protects rechargeable batteries against a malfunctioning protection circuit

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.

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.

Growing community of inventors

Yongin-si, South Korea

Se-Sub Sim