The invention provides a torque distribution method and device of an electric vehicle and the electric vehicle. The electric vehicle comprises a first motor and a second motor, and the first motor and the second motor are jointly used for driving the electric vehicle. The torque distribution method comprises the steps that the expected torque of the electric vehicle, the first rotating speed of a first motor and the second rotating speed of a second motor are obtained; substituting the expected torque, the first rotating speed and the second rotating speed into a torque distribution table to obtain a corresponding torque distribution coefficient as a current torque distribution coefficient; the torque distribution table is the corresponding relation among the expected torque, the first rotating speed, the second rotating speed and the torque distribution coefficient when the efficiency of the first motor and the second motor is optimal; the torque distribution table is obtained through a genetic algorithm; and determining a first torque of the first motor and a second torque of the second motor according to the current torque distribution coefficient and the expected torque. Torque distribution can be rapidly carried out on the double motors, meanwhile, the total efficiency of the double motors is the highest, and the cruising ability of the vehicle is improved.

    本申请提供一种电动汽车的扭矩分配方法、装置及电动汽车。电动汽车包括第一电机和第二电机,第一电机和第二电机共同用于驱动电动汽车。扭矩分配方法包括:获取电动汽车的期望力矩,第一电机的第一转速以及第二电机的第二转速;将期望力矩、第一转速和第二转速代入力矩分配表,得到对应的力矩分配系数,作为当前力矩分配系数;力矩分配表为第一电机和第二电机的效率最优时,期望力矩、第一转速、第二转速和力矩分配系数之间的对应关系;力矩分配表是通过遗传算法得到的;根据当前力矩分配系数和期望力矩,确定第一电机的第一力矩和第二电机的第二力矩。本申请可以快速对双电机进行力矩分配,同时使双电机的总效率最高,提高车辆续航能力。


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    Title :

    Torque distribution method and device of electric automobile and electric automobile


    Additional title:

    电动汽车的扭矩分配方法、装置及电动汽车


    Contributors:
    WANG MANRONG (author) / YU PEIJIN (author) / PAN QIWEI (author) / DING SHENGYUE (author)

    Publication date :

    2025-04-11


    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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