The invention provides an electric vehicle sliding energy recovery grade control method and system. The method comprises the following steps that the energy recovery grade state is calculated based on the actual voltage of an energy recovery grade switch; smooth processing is carried out on energy recovery level state switching; calculating a sliding torque correction coefficient by using the processed sliding energy recovery grade and the actual vehicle speed; calculating a corrected sliding feedback torque by using the sliding torque correction coefficient; and the corrected sliding feedback torque is converted into the wheel side required torque through the speed ratio and the tire radius. According to the control method for the sliding energy recovery grade of the electric automobile, the sliding energy recovery grade state switching is smoothed according to the torque jump problem of the whole automobile, so that the torque response does not have obvious jump, the smoothness of the whole automobile is improved, and better driving experience is provided for a user. In addition, the invention further provides an electric vehicle sliding energy recovery grade control system for implementing the method.

    本发明提供了一种电动汽车滑行能量回收等级控制方法及系统,包括以下步骤:基于采集能量回收等级开关的实际电压计算能量回收等级状态;对能量回收等级状态切换进行平滑处理;利用处理后的滑行能量回收等级和实际整车车速计算滑行扭矩修正系数;利用滑行扭矩修正系数计算修正后的滑行回馈扭矩;将修正后滑行回馈扭矩通过速度比与轮胎半径转换为轮边需求扭矩。本发明提供的电动汽车滑行能量回收等级控制方法针对整车扭矩跳变问题,对滑行能量回收等级状态切换进行平滑处理,使扭矩响应无明显跳变,提高整车平顺性,给用户提供更好的驾驶体验。此外本发明还提供了一种电动汽车滑行能量回收等级控制系统用于实施上述方法。


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    Title :

    Electric vehicle sliding energy recovery grade control method and system


    Additional title:

    一种电动汽车滑行能量回收等级控制方法及系统


    Contributors:
    LI HAIMU (author) / YU WENTONG (author) / WEI GUANGJIE (author)

    Publication date :

    2024-08-16


    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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