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    BATTERY PROTECTION CHIP AND DEVICE FOR CONTROLLING BALANCE OF BATTERY PROTECTION CHIPS
    2.
    发明申请
    BATTERY PROTECTION CHIP AND DEVICE FOR CONTROLLING BALANCE OF BATTERY PROTECTION CHIPS 审中-公开
    用于控制电池保护器的平衡的电池保护芯片和装置

    公开(公告)号：WO2013097584A1

    公开(公告)日：2013-07-04

    申请号：PCT/CN2012/085877

    申请日：2012-12-04

    Applicant: SHENZHEN BYD AUTO R&D COMPANY LIMITED ,  BYD COMPANY LIMITED

    Inventor： WANG, Xiaoping ,  TU, Zailin ,  BAI, Qinggang

    IPC: H02H7/18 ,  H01M10/42

    CPC classification number: H02J7/0016 ,  H01M10/425 ,  H01M2010/4271

    Abstract: A battery protection chip may comprise: a first end, configured to output a strong pull up signal when a voltage of at least one battery in a battery pack protected does not reach a balance threshold, and to output a weak pull down signal when voltages of all batteries in the battery pack protected reach the balance threshold; and a second end, configured to output a strong pull down signal when a voltage of at least one battery in a battery pack protected does not reach a balance threshold, and to output a weak pull up signal when voltages of all batteries in the battery pack protected reach the balance threshold.

    Abstract translation: 电池保护芯片可以包括：第一端，被配置为当被保护的电池组中的至少一个电池的电压未达到平衡阈值时输出强上拉信号，并且当电压 保护电池组中的所有电池达到平衡阈值; 以及第二端，被配置为当所保护的电池组中的至少一个电池的电压未达到平衡阈值时输出强下拉信号，并且当所述电池组中的所有电池的电压被输出时输出弱上拉信号 受保护达到平衡阈值。

    VOLTAGE DETECTION AND DETERMINATION CIRCUIT AND POWER BATTERY SYSTEM HAVING SAME
    6.
    发明公开
    VOLTAGE DETECTION AND DETERMINATION CIRCUIT AND POWER BATTERY SYSTEM HAVING SAME 审中-公开

    公开(公告)号：EP3470860A1

    公开(公告)日：2019-04-17

    申请号：EP17809632.7

    申请日：2017-05-25

    Applicant: BYD Company Limited

    Inventor： BAI, Qinggang ,  WANG, Xiaoping

    IPC: G01R31/36 ,  G01R19/165

    Abstract: The present invention discloses a voltage detection and determination circuit and a power battery system having the same. The circuit includes: a detection processing module, connected to a voltage sampling end and configured to output a first detection voltage based on a voltage sampled by the voltage sampling end; a detection similarity processing module, configured to imitate the detection processing module, to generate a reference voltage corresponding to the first detection voltage; a current source module, configured to provide a bias current to the detection processing module and the detection similarity processing module; and a comparison processing module, configured to perform comparison processing on the first detection voltage and the reference voltage, to output a voltage detection signal. The circuit uses the detection similarity processing module to imitate the detection processing module, to generate reference voltage, does not need a reference voltage, and has a simple circuit structure. Moreover, there is no need to consider an influence caused by an offset voltage of a comparator. A voltage sampled by a sampling end may be accurately detected and determined, so that charging and discharging states of a battery pack are correctly identified.

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