The invention discloses a relay detection circuit of a power battery and a battery control unit, the circuit comprises a battery power supply unit, a voltage division unit, a voltage detection unit and a control unit, one end of the voltage division unit is connected with the battery power supply unit; one end of the voltage detection unit is connected with the other end of the voltage division unit through a detection port, a first node is arranged between the voltage detection unit and the voltage division unit, and the other end of the voltage detection unit is connected with a cathode relay and an anode relay of the power battery respectively; the other end of the cathode relay is connected with the other end of the anode relay and then grounded; the control unit is connected with the first node and used for detecting the voltage value of the first node and determining the working state of the positive relay and/or the negative relay of the power battery according to the voltage value of the first node. The circuit can determine the working states of the two relays of the power battery at the same time, and the purpose of saving detection resources of the battery control unit is achieved.

    本发明公开了一种动力电池的继电器检测电路和电池控制单元,电路包括:电池供电单元、分压单元、电压检测单元和控制单元,其中,分压单元的一端与电池供电单元相连;电压检测单元的一端通过检测端口与分压单元的另一端相连,电压检测单元与分压单元之间具有第一节点,电压检测单元的另一端与动力电池的负极继电器和正极继电器分别相连,负极继电器的另一端与正极继电器的另一端相连后接地;控制单元与第一节点相连,用于检测第一节点的电压值,并根据第一节点的电压值确定动力电池的正极继电器和/或负极继电器的工作状态。该电路可以同时确定动力电池的两个继电器的工作状态,达到节约电池控制单元检测资源的目的。


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    Title :

    Relay detection circuit of power battery and battery control unit


    Additional title:

    动力电池的继电器检测电路和电池控制单元


    Contributors:
    TANG ZHONGYUAN (author) / MA JIANSHENG (author) / LI ZHIFANG (author) / LEI LEI (author) / ZHAO LIPENG (author)

    Publication date :

    2022-11-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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