SECONDARY BATTERY PROTECTION CIRCUIT, SECONDARY BATTERY PROTECTION INTEGRATED CIRCUIT, AND BATTERY PACK

    公开(公告)号:US20190020074A1

    公开(公告)日:2019-01-17

    申请号:US16016836

    申请日:2018-06-25

    IPC分类号: H01M10/44 H02J7/00

    摘要: A secondary battery protection circuit for protecting a secondary battery with multiple connected-in-parallel cells, includes a charging fault detection unit for each cell for prohibiting charging of the corresponding cell when overcharging and/or charging over-current for the corresponding cell is detected; a charging control element for each cell for cutting off a charging path for the corresponding cell when the charging of the corresponding cell is prohibited; a detection resistor for each cell inserted in series in the charging path; and a balance control unit for, in order to balance a first charging current flowing in a first charging path for a first cell with a second charging current flowing in a second charging path for a second cell, controlling a difference between the first and second charging currents in a saturation region of the charging control element based on a detection voltage generated by the detection resistor.

    Secondary battery protecting integrated circuit, secondary battery protecting circuit, charge control circuit, and battery pack

    公开(公告)号:US10516276B2

    公开(公告)日:2019-12-24

    申请号:US15454164

    申请日:2017-03-09

    IPC分类号: H02J7/00

    摘要: A secondary battery protecting integrated circuit protects a secondary battery by controlling a switch circuit inserted in series on a path connected to a first electrode of the secondary battery. The secondary battery protecting integrated circuit includes: a sense terminal connected to a monitor terminal provided so that a first electric potential of the first electrode is monitorable; a first power supply terminal connected to the path; a second power supply terminal connected to a second electrode of the secondary battery; an internal wiring line configured to connect the first power supply terminal and the sense terminal; an internal switch on the internal wiring line; an abnormality detecting circuit configured to detect a predetermined abnormality; and a switch control circuit configured to turn on the internal switch when the predetermined abnormality is not detected, and configured to turn off the internal switch when the predetermined abnormality is detected.

    SECONDARY BATTERY PROTECTION CIRCUIT, BATTERY PACK, BATTERY SYSTEM, AND METHOD FOR PROTECTING SECONDARY BATTERY

    公开(公告)号:US20220368141A1

    公开(公告)日:2022-11-17

    申请号:US17660868

    申请日:2022-04-27

    IPC分类号: H02J7/00

    摘要: A secondary battery protection circuit includes a potential-difference control circuit. The potential-difference control circuit provides, when overcharge is detected by an overcharge detection circuit, a control terminal of a charge control transistor with feedback on a potential-difference detection signal to control a potential difference between an electrode of a secondary battery and a terminal for a load and charger. The potential-difference control circuit provides, when overdischarge is detected by an overdischarge detection circuit, a control terminal of each of the charge control transistor and a discharge control transistor with feedback on the potential-difference detection signal to control the potential difference.

    CHARGING CONTROL CIRCUIT FOR SECONDARY BATTERY AND CHARGING CONTROLLER USING SAME
    5.
    发明申请
    CHARGING CONTROL CIRCUIT FOR SECONDARY BATTERY AND CHARGING CONTROLLER USING SAME 有权
    充电用于二次电池的控制电路和使用相同的充电控制器

    公开(公告)号:US20100176768A1

    公开(公告)日:2010-07-15

    申请号:US12664125

    申请日:2008-07-02

    IPC分类号: H02J7/04

    摘要: A charging control circuit for a secondary battery includes a temperature detection terminal for detecting the temperature of a secondary battery from an input detected voltage; a temperature comparison part having four threshold voltages corresponding to four reference temperatures, the temperature comparison part being configured to compare the four threshold voltages with the detected voltage input to the temperature detection terminal and to output a temperature range signal indicating the temperature range of the detected voltage; and a control part configured to control a charging current and/or a charging voltage based on the temperature range signal output from the temperature comparison part.

    摘要翻译: 二次电池的充电控制电路包括:温度检测端子,用于从输入检测电压检测二次电池的温度; 温度比较部分具有对应于四个参考温度的四个阈值电压,所述温度比较部分被配置为将四个阈值电压与输入到温度检测端子的检测电压进行比较,并输出指示检测到的温度范围的温度范围信号 电压; 以及控制部,被配置为基于从所述温度比较部输出的温度范围信号来控制充电电流和/或充电电压。

    Secondary battery protection circuit for causing a desired current to flow in each of the cells, secondary battery protection integrated circuit, and battery pack

    公开(公告)号:US11165261B2

    公开(公告)日:2021-11-02

    申请号:US16016836

    申请日:2018-06-25

    IPC分类号: H02J7/00 H01M10/44

    摘要: A secondary battery protection circuit for protecting a secondary battery with multiple connected-in-parallel cells, includes a charging fault detection unit for each cell for prohibiting charging of the corresponding cell when overcharging and/or charging over-current for the corresponding cell is detected; a charging control element for each cell for cutting off a charging path for the corresponding cell when the charging of the corresponding cell is prohibited; a detection resistor for each cell inserted in series in the charging path; and a balance control unit for, in order to balance a first charging current flowing in a first charging path for a first cell with a second charging current flowing in a second charging path for a second cell, controlling a difference between the first and second charging currents in a saturation region of the charging control element based on a detection voltage generated by the detection resistor.

    Semiconductor integrated circuit device, electronic apparatus, and charging controller for secondary battery
    7.
    发明授权
    Semiconductor integrated circuit device, electronic apparatus, and charging controller for secondary battery 有权
    半导体集成电路器件,电子设备和二次电池充电控制器

    公开(公告)号:US08860376B2

    公开(公告)日:2014-10-14

    申请号:US12664125

    申请日:2008-07-02

    IPC分类号: H02J7/04 H01M10/44 H02J7/00

    摘要: A charging control circuit for a secondary battery includes a temperature detection terminal for detecting the temperature of a secondary battery from an input detected voltage; a temperature comparison part having four threshold voltages corresponding to four reference temperatures, the temperature comparison part being configured to compare the four threshold voltages with the detected voltage input to the temperature detection terminal and to output a temperature range signal indicating the temperature range of the detected voltage; and a control part configured to control a charging current and/or a charging voltage based on the temperature range signal output from the temperature comparison part.

    摘要翻译: 二次电池的充电控制电路包括:温度检测端子,用于从输入检测电压检测二次电池的温度; 温度比较部分具有对应于四个参考温度的四个阈值电压,所述温度比较部分被配置为将四个阈值电压与输入到温度检测端子的检测电压进行比较,并输出指示检测到的温度范围的温度范围信号 电压; 以及控制部,被配置为基于从所述温度比较部输出的温度范围信号来控制充电电流和/或充电电压。

    CONTROL SYSTEM, CONTROL METHOD AND INTEGRATED CIRCUIT FOR SECONDARY BATTERY PROTECTION

    公开(公告)号:US20220069592A1

    公开(公告)日:2022-03-03

    申请号:US17445777

    申请日:2021-08-24

    IPC分类号: H02J7/00

    摘要: A control system includes a secondary battery protection apparatus and a device. The secondary battery protection apparatus includes one or more monitoring terminals each provided in a path different from power paths, each monitoring terminal being operable for monitoring a potential at a negative electrode of a given secondary battery cell among a plurality of the secondary battery cells. The secondary battery protection apparatus includes one or more internal switches each of which is provided in an internal line between the negative electrode of a given secondary battery cell and a given monitoring terminal. The device includes a balance control circuit that adjusts, based on potentials monitored by the monitoring terminals, a current flowing into a line path that includes a corresponding internal line. The balance control circuit controls balance among the cell voltages for the secondary battery cells, based on the adjusted current.

    SECONDARY BATTERY PROTECTING INTEGRATED CIRCUIT, SECONDARY BATTERY PROTECTING CIRCUIT, CHARGE CONTROL CIRCUIT, AND BATTERY PACK

    公开(公告)号:US20180183247A1

    公开(公告)日:2018-06-28

    申请号:US15454164

    申请日:2017-03-09

    IPC分类号: H02J7/00

    摘要: A secondary battery protecting integrated circuit protects a secondary battery by controlling a switch circuit inserted in series on a path connected to a first electrode of the secondary battery. The secondary battery protecting integrated circuit includes: a sense terminal connected to a monitor terminal provided so that a first electric potential of the first electrode is monitorable; a first power supply terminal connected to the path; a second power supply terminal connected to a second electrode of the secondary battery; an internal wiring line configured to connect the first power supply terminal and the sense terminal; an internal switch on the internal wiring line; an abnormality detecting circuit configured to detect a predetermined abnormality; and a switch control circuit configured to turn on the internal switch when the predetermined abnormality is not detected, and configured to turn off the internal switch when the predetermined abnormality is detected.