The invention discloses a control method and device for a pure electric vehicle, the pure electric vehicle and a storage medium, and the method comprises the steps that under the condition that the pure electric vehicle runs, the rotating speed of a motor is obtained and recorded as the current rotating speed of the motor; and executing a preset overspeed protection strategy according to the interval to which the current rotating speed of the motor belongs, so as to realize staged overspeed protection of the motor, wherein the preset overspeed protection strategy comprises at least one of a zero torque control protection strategy, a three-phase active short circuit protection strategy and an open circuit protection strategy. According to the scheme, the corresponding protection strategy is adopted according to the rotating speed of the motor, loss of the motor controller and the motor under the condition that the rotating speed of the pure electric vehicle is overspeed or out of control is reduced, power imbalance of the whole vehicle caused by sudden change of motor torque is avoided, and safety is improved.

    本发明公开了一种纯电动汽车的控制方法、装置、纯电动汽车和存储介质,该方法包括:在所述纯电动汽车行驶的情况下,获取所述电机的转速,记为所述电机的当前转速;根据所述电机的当前转速所属区间,执行预设的超速保护策略,以实现对所述电机的分阶段的超速保护;其中,预设的超速保护策略,包括:零扭矩控制保护策略、三相主动短路保护策略和开路保护策略中的至少之一。该方案,通过根据电机转速采用对应的保护策略,降低纯电动汽车的转速超速或失控的情况下对电机控制器和电机的损耗,避免电机扭矩突变导致整车动力不平衡,提升安全性。


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    Title :

    Control method and device of pure electric vehicle, pure electric vehicle and storage medium


    Additional title:

    纯电动汽车的控制方法、装置、纯电动汽车和存储介质


    Contributors:
    ZHONG GUOXIANG (author) / CHEN GUANGHUI (author) / CHENG XINQING (author) / ZHU HAI (author)

    Publication date :

    2023-08-29


    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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