According to the electric vehicle anti-electric shock protection system and the electric vehicle, the SDM is further connected with the BMS and the DC/DC converter and sends the collision signal to the BMS and the DC/DC converter, so that even if the VCU breaks down or communication between the VCU and the BMS and communication between the VCU and the DC/DC converter breaks down, the BMS can directly open the main relay according to the collision signal, the DC/DC converter can directly discharge according to the collision signal, and the safety of the electric vehicle is improved. Personal safety protection of a driver, passengers and people around the vehicle is improved. When a collision sensor fails or SDM communication is lost, whether collision occurs or not is obtained by comprehensively analyzing the detected vehicle high-voltage insulation resistance value, and when collision occurs, a main relay is turned on and high-voltage discharge is performed; and a discharge device connected with a high-voltage loop of the electric vehicle is also arranged for reducing the voltage of the high-voltage end. Personal safety protection of the driver, passengers and people around the vehicle is further improved.

    本发明提供的电动车辆防触电保护系统及电动车辆,SDM还分别连接BMS、DC/DC转换器,并将碰撞信号分别发送至BMS、DC/DC转换器,这样即使在VCU故障,或VCU与BMS、DC/DC转换器间通信故障时,BMS可以直接根据碰撞信号打开主继电器,DC/DC转换器可以直接根据碰撞信号进行放电,实现对驾驶员、乘客及车辆周围人员的人身安全保护的提高。当碰撞传感器失效或SDM通信丢失时,结合对检测的车辆高压绝缘阻值进行综合分析,得出碰撞是否发生,并在碰撞发生时,打开主继电器和高压放电;以及还设置与电动车辆高压回路连接的放电器件,用于降低高压端电压。进一步提高对驾驶员、乘客及车辆周围人员的人身安全保护。


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    Title :

    Electric vehicle collision anti-electric shock protection system and electric vehicle


    Additional title:

    电动车辆碰撞防触电保护系统及电动车辆


    Contributors:
    ZHANG SHUMEI (author) / HUANG XIAOYAO (author) / REN QIANMENG (author) / WANG ZHIXIANG (author) / WANG LIN (author)

    Publication date :

    2022-06-28


    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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