The invention discloses an active discharge control method and system for an electric vehicle. The control method comprises the steps that after a whole vehicle is normally powered off, a whole vehicle controller sends a power-off request to a battery manager and sends a first active discharge request to a motor controller; the battery manager controls the whole vehicle to be unloaded when receiving a power-off request, controls the main positive contactor and the main negative contactor to be disconnected when unloading is completed, and feeds off state information of the main positive contactor and the main negative contactor back to the motor controller and the whole vehicle controller; the motor controller unloads the motor when receiving the first active discharge request, carries out first discharge if the disconnection state information is received, carries out second discharge if the first discharge fails, and prohibits discharge and sends failure fault information if the second discharge fails. Therefore, according to the control method, the reliability of active discharging of the vehicle can be guaranteed, and the high-voltage safety of the whole vehicle and the use safety of a user are improved.

    本发明公开了一种电动车辆的主动放电控制方法与系统,其中,控制方法包括,在整车正常下电后,整车控制器向电池管理器发送下电请求和向电机控制器发送第一次主动放电请求;电池管理器在接收到下电请求时控制整车卸载,在完成卸载时控制主正、主负接触器断开,并将主正、主负接触器的断开状态信息反馈给电机控制器和整车控制器;电机控制器在接收到第一次主动放电请求时进行电机卸载,在卸载完成时,如果上述断开状态信息,则进行第一次放电,如果第一次放电失败则进行第二次,如果第二次放电也失败,则禁止放电并发出失败故障信息。由此,本实施例的控制方法,能够保证车辆主动放电的可靠性,提高整车高压安全和用户的使用安全。


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    Titel :

    Active discharge control method and system for electric vehicle


    Weitere Titelangaben:

    电动车辆的主动放电控制方法与系统


    Beteiligte:
    HU MIN (Autor:in) / DAI MIN (Autor:in) / DU CHENGRUN (Autor:in)

    Erscheinungsdatum :

    2021-11-09


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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