The invention discloses a vehicle, a safety protection method and device after collision of the vehicle and a battery management system. The safety protection method comprises the steps that a collision signal sent by an air bag restraint system controller is received; controlling a positive contactor and a negative contactor to be in a disconnected state based on the collision signal so as to carry out collision power-off protection on the vehicle, and judging whether the collision power-off protection fails or not; and if the collision power-off protection fails, controlling the high-voltage circuit breaker to be in a disconnected state. Therefore, after the vehicle is collided, the high-voltage circuit of the vehicle can be cut off in time through the high-voltage circuit breaker under the condition that the vehicle has a safety fault, and the electric shock risk and the harm generated by collision are prevented from being further expanded.

    本发明公开了一种车辆及其碰撞后的安全保护方法、装置和电池管理系统,安全保护方法包括:接收安全气囊控制器发送的碰撞信号;基于碰撞信号控制正极接触器和负极接触器处于断开状态以对车辆进行碰撞断电保护,并判断碰撞断电保护是否失效;如果碰撞断电保护失效,则控制高压断路器处于断开状态。由此,在车辆产生碰撞后,能够在车辆存在安全故障的情况下,通过高压断路器及时切断车辆的高压回路,避免触电风险及碰撞产生的危害进一步扩大。


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    Title :

    Vehicle, safety protection method and device after collision of vehicle and battery management system


    Additional title:

    车辆及其碰撞后的安全保护方法、装置和电池管理系统


    Contributors:
    ZHOU KAN (author) / JIN QIQIAN (author) / SHEN YUANLIANG (author)

    Publication date :

    2022-07-01


    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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