The invention relates to the technical field of electric driving systems of electric automobiles, in particular to a motor torque control method and device for an electric four-wheel-drive automobile, and the method comprises the steps that when an electric driving differential mechanism of any shaft enters an active protection mode, the difference value between the actual torque of any shaft and the current required torque is obtained; according to superposition of the difference value and the initial torque demand value, final demand torques of other shafts except any shaft are obtained; and when the motor differential mechanisms of the other shafts do not enter the active protection mode, the motors of the other shafts are controlled to output torque according to the final required torque. According to the embodiment of the invention, when the electric drive differential mechanism of any shaft enters the active protection mode, the final demand torque of the other shafts can be obtained, and when the motor differential mechanisms of the other shafts do not enter the active protection mode, the motors of the other shafts are controlled to output the torque according to the final demand torque, so that the electric drive output torque meets the driver demand torque; therefore, the driving experience of the user is improved, and the safety of the vehicle is improved.

    本申请涉及电动汽车电驱动系统技术领域,特别涉及一种电动四驱汽车的电机扭矩控制方法及装置,其中,方法包括:在任一轴的电驱差速器进入主动保护模式时,获取任一轴的实际扭矩和当前需求扭矩之间的差值;根据差值和初始扭矩需求值叠加,得到除任一轴之外的其余轴的最终需求扭矩;在其余轴的电机差速器未进入主动保护模式时,控制其余轴的电机根据最终需求扭矩输出扭矩。本申请实施例可以在任一轴的电驱差速器进入主动保护模式时,获取其余轴的最终需求扭矩,并且在其余轴的电机差速器未进入主动保护模式时,控制其余轴的电机根据最终需求扭矩输出扭矩,使得电驱输出扭矩满足驾驶员需求扭矩,从而提升用户的驾驶体验,并且提升车辆的安全性。


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    Title :

    Motor torque control method and device for electric four-wheel-drive automobile


    Additional title:

    电动四驱汽车的电机扭矩控制方法及装置


    Contributors:
    XU PENG (author) / ZHANG YANG (author) / PENG QIANLEI (author) / CHEN FU (author) / LUAN WENYUE (author)

    Publication date :

    2023-04-18


    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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