The invention discloses an electric vehicle overcurrent protection method, a vehicle-mounted controller and an electric vehicle. The electric vehicle overcurrent protection method comprises the following steps executed by the vehicle-mounted controller: acquiring a current actually measured current corresponding to a high-voltage power utilization circuit in real time; updating the overcurrent duration according to the current actually measured current and the overcurrent current threshold; and if the overcurrent duration is greater than the protection time threshold, performing overcurrent protection on the high-voltage power utilization circuit. According to the technical scheme, before the branch fuse in the high-voltage fuse box is fused, over-current protection can be rapidly carried out on the high-voltage electric circuit, and the reliability and effectiveness of over-current protection on the high-voltage electric circuit are improved.

    本发明公开了一种电动车过流保护方法、车载控制器及电动车,该电动车过流保护方法包括车载控制器执行的步骤:实时采集高压用电电路对应的当前实测电流;根据当前实测电流与过流电流阈值,更新过流持续时间;若过流持续时间大于保护时间阈值,则对高压用电电路进行过流保护。本技术方案能够迅速地在高压保险盒中的支路保险熔断前,对高压用电电路进行过流保护,提高对高压用电电路进行过流保护的可靠性和有效性。


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    Title :

    Electric vehicle overcurrent protection method, vehicle-mounted controller and electric vehicle


    Additional title:

    电动车过流保护方法、车载控制器及电动车


    Contributors:
    YUE MING (author) / YU HAO (author) / ZHANG XUEBING (author) / LI MING (author) / YANG ZHI (author) / JIANG HAI (author)

    Publication date :

    2022-10-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen



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