The embodiment of the invention relates to the technical field of circuits, and discloses a collision detection circuit, a battery management system and a vehicle. The collision detection circuit comprises: a signal collector which is used for collecting a collision signal of a vehicle; a differential operational amplification circuit which is used for processing the collision signal and outputting a first signal; and a comparison circuit which is used for outputting a second signal according to the first signal and the reference voltage of the comparison circuit, wherein the second signal is used for controlling the disconnection of the high-voltage power supply loop, and the reference voltage is configured based on the amplitude of the collision signal and the amplification factor of the differential operational amplifier circuit. According to the invention, collision is detected through the collision detection circuit, the high-voltage loop can be controlled to be disconnected in time when collision occurs, the reliability is high, and the safety of the whole vehicle is improved.

    本发明实施例涉及电路技术领域,公开了一种碰撞检测电路、电池管理系统及车辆。碰撞检测电路包括:信号采集器,用于采集车辆的碰撞信号;差分运算放大电路,用于将碰撞信号进行处理并输出第一信号;比较电路,用于根据第一信号和比较电路的参考电压输出第二信号;其中,第二信号用于控制断开高压供电回路,参考电压基于碰撞信号的幅值和差分运算放大电路的放大倍数来配置。本发明中,通过碰撞检测电路对碰撞进行检测,能够在发生碰撞时及时控制断开高压回路,可靠性较高,提升了整车安全性。


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    Title :

    Collision detection circuit, battery management system and vehicle


    Additional title:

    碰撞检测电路、电池管理系统及车辆


    Contributors:
    LUO HUIXIU (author) / LIU CHANGJIAN (author) / LOU QIDONG (author) / WU GUOXIU (author)

    Publication date :

    2021-12-21


    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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