The invention provides a battery-changing power battery electrical system, comprising: a BDU assembly which is in high-voltage connection with a power battery and a quick-changing connector and comprises a main contactor, a pre-charging contactor, a pre-charging resistor and a fuse which are electrically connected in sequence; the quick-change electric connector is used for realizing high-voltage connection between the power battery and the vehicle and low-voltage connection with a low-voltage wire harness on the vehicle; the BMS is in communication connection with the VCU, and is used for detecting the voltage and current of the power battery and the temperature of a high-voltage terminal of the quick-change electric connector, detecting whether the quick-change electric connector is matched in place or not, and performing fault diagnosis; the locking mechanism monitoring sensor is used for detecting whether a lock hook of the power battery locking mechanism is locked in place or not; the VCU is used for carrying out fault processing according to the fault information provided by the BMS and the unlocking in-place signal provided by the locking mechanism monitoring sensor; according to the invention, the driving safety can be well ensured, and the battery replacement and safe and reliable operation of the vehicle can be realized.

    本发明提供了一种换电动力电池电气系统,其包括:BDU总成,与动力电池、快换连接器分别高压连接,包括依次电连接的主接触器、预充接触器、预充电阻、熔断器;快换电连接器,用于实现动力电池与车辆之间的高压连接,同时与车辆上的低压线束低压连接;BMS,与VCU通讯连接,用于检测动力电池的电压、电流、快换电连接器的高压端子的温度,同时检测快换电连接器是否配合到位,并做故障诊断;锁止机构监测传感器,用于检测动力电池锁止机构的锁钩是否锁止到位;VCU,用于根据BMS提供的故障信息、锁止机构监测传感器提供的未锁止到位信号进行故障处理;本发明能够较好地保证行车安全,有利于实现车辆的换电和安全可靠运行。


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    Title :

    Electric system of battery-replacing power battery


    Additional title:

    一种换电动力电池电气系统


    Contributors:
    QIN LIWEI (author) / HE QINGDONG (author) / JIANG DIANSHUANG (author) / WEN QINGYUN (author)

    Publication date :

    2023-03-10


    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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