The invention relates to the technical field of new energy vehicles, in particular to a motor torque limiting method and device, a vehicle control unit and a vehicle. The method comprises the steps that tire state information and motor state information are obtained, the tire state information indicates whether a tire slips or not, and the motor state information indicates whether the rotating speed of a motor fails or not; based on the tire state information and the motor state information, calculating a corresponding motor correction rotating speed, and updating the collected current rotating speed of the motor according to the motor correction rotating speed; determining a power distribution ratio according to the current rotating speed of the motor; and calculating a motor torque limit value according to the power distribution ratio, and limiting the obtained original output torque of the motor according to the motor torque limit value. By adopting the method, the problems of difficult power estimation, unreasonable power distribution and the like in the scenes of tire slipping, motor rotating speed failure and the like can be solved.

    本申请涉及新能源汽车技术领域,尤其是涉及一种电机扭矩限制方法、装置、整车控制器和车辆。所述方法包括:获取轮胎状态信息和电机状态信息,其中,所述轮胎状态信息表示轮胎是否打滑,所述电机状态信息表示电机转速是否失效;基于所述轮胎状态信息和所述电机状态信息,计算对应的电机修正转速,并根据所述电机修正转速对采集的电机当前转速更新;根据所述电机当前转速确定功率分配比;根据所述功率分配比计算电机扭矩限制值,并根据所述电机扭矩限制值对获取到的电机原始输出扭矩进行限制。采用本方法能够改善轮胎打滑、电机转速失效等场景中的功率难以估计、功率分配不合理等问题。


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    Title :

    Motor torque limiting method and device, vehicle control unit and vehicle


    Additional title:

    电机扭矩限制方法、装置、整车控制器和车辆


    Contributors:
    LI LIANGHAO (author) / TANG RUYI (author) / HUANG DAFEI (author) / LIU XIAOFEI (author) / TAN CHUNYAN (author) / CUI HUANYU (author)

    Publication date :

    2024-05-10


    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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