The invention relates to a new energy automobile collision protection quick response circuit, and belongs to the technical field of automobile safety. The circuit comprises an RC filtering module, anoperational amplifier module and a driving module. A safety air bag ECU is connected with the RC filtering module through a cable. The RC filtering module, the operational amplifier module and the driving module are connected in sequence; the MCU, the driving module and the high-voltage side driver in the BMS are also connected in sequence, the output end of the high-voltage side driver is connected with a relay, the high-voltage side driver controls closing and opening of the relay, and an AD sampling port of the MCU in the BMS is connected with the high-voltage side driver to read back an output voltage signal of the high-voltage side driver. The safety air bag ECU, the vehicle control unit VCU and the BMS are in interconnection communication through a vehicle CAN network, and after therelay is disconnected, the BMS controls the VCU to request the accessory to work so as to release residual current. In addition, the BMS also sends a signal to the high-voltage side driver to drive the relay to be disconnected after receiving the collision fault state bit signal.

    本发明涉及一种新能源汽车碰撞保护快速反应电路,属于汽车安全技术领域,包括RC滤波模块、运算放大器模块、驱动模块,安全气囊ECU通过线缆连接RC滤波模块,RC滤波模块、运算放大器模块、驱动模块顺次相连,BMS中的MCU、驱动模块、高压侧驱动器亦顺次相连,高压侧驱动器的输出端连接继电器,高压侧驱动器控制继电器的闭合和断开,BMS中的MCU的AD采样口接高压侧驱动器以回读其输出电压信号。安全气囊ECU、整车控制器VCU、BMS通过整车CAN网络互联通信,在继电器断开后通过BMS控制VCU请求附件工作以释放残余电流。此外,BMS接收到碰撞故障状态位信号后也发送信号给高压侧驱动器以驱动继电器断开。


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    Title :

    New energy automobile collision protection quick response circuit


    Additional title:

    一种新能源汽车碰撞保护快速反应电路


    Contributors:
    WANG KAI (author) / YAO HONGJIE (author)

    Publication date :

    2020-10-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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