The embodiment of the invention discloses an active discharge control system and method for an electric vehicle. The system comprises a voltage converter, a communication unit and an air bag restraint system controller, the voltage converter comprises a first processor and a second processor, the first processor judges whether the voltage converter enters an active discharge working mode or not according to an active discharge instruction, bus capacitor voltage, a vehicle speed signal and an air bag restraint system collision signal, and the second processor judges whether the voltage converter enters the active discharge working mode. When the voltage converter enters the active discharge working mode, if the working state of the first processor is normal and the voltage state of the high-voltage input side is normal, the first processor executes active discharge operation; and if the working state of the first processor is abnormal or the voltage state of the high-voltage input side is abnormal, the second processor executes the active discharge operation, so that multiple protection of active discharge is realized, successful active discharge of the vehicle is ensured, unexpected active discharge of the vehicle is avoided, and the driving safety of the vehicle is further improved.

    本发明实施例公开了一种电动汽车主动放电控制系统及方法。该系统包括电压变换器、通信单元以及安全气囊控制器,电压变换器包括第一处理器、第二处理器,其中,第一处理器根据主动放电指令、母线电容电压以及车速信号,以及安全气囊碰撞信号,判断电压变换器是否进入主动放电工作模式,在电压变换器进入主动放电工作模式时,若第一处理器的工作状态正常、高压输入侧电压状态正常时,则由第一处理器执行主动放电操作;若第一处理器的工作状态异常或高压输入侧电压状态异常,则由第二处理器执行主动放电操作,实现了主动放电的多重保护,确保车辆主动放电成功,并且,避免了车辆发生非预期的主动放电,进一步的,提高了车辆的行驶安全性。


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    Title :

    Active discharge control system and method for electric vehicle


    Additional title:

    电动汽车主动放电控制系统及方法


    Contributors:
    JIANG TAO (author) / LIN HANDONG (author) / JIANG LEI (author) / GU JIAWEN (author)

    Publication date :

    2022-01-21


    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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