The invention discloses a torque distribution method for a four-wheel-drive vehicle. The torque distribution method comprises the steps that operation information of the four-wheel-drive vehicle is obtained; if the operation information meets the requirements of the preset parameters, the actual required torque of the four-wheel drive is calculated based on the initial torque requirement of the user; according to the operation information of the four-wheel-drive vehicle and the actual demand torque, the demand torque of a rear axle of the four-wheel-drive vehicle is determined through table look-up; and the final output torque of the rear axle is determined according to the required torque of the rear axle and the maximum output torque and the maximum bearing torque of the motor of the rear axle, and the difference value between the actual required torque and the final output torque is determined as the front axle torque of the four-wheel drive. The invention further discloses a torque distribution system of the four-wheel-drive vehicle. The torque distribution system comprises an identification module and a torque distribution module. The final output torque of the rear axle is determined according to the required torque of the rear axle and the maximum output torque and the maximum bearing torque of the motor of the rear axle, so that the influence of motor performance and load transfer on front and rear axle torque distribution is considered, and the accuracy degree of front and rear axle torque distribution is improved.

    本申请公开了一种四驱车的扭矩分配方法,包括获取四驱车的运行信息;若运行信息满足预设参数的要求,基于用户的初始扭矩需求计算四驱车的实际需求扭矩;根据四驱车的运行信息与实际需求扭矩,查表确定四驱车的后轴的需求扭矩;根据后轴的需求扭矩、后轴的电机最大输出扭矩和最大承受扭矩确定后轴的最终输出扭矩,将实际需求扭矩与最终输出扭矩之间差值确定为四驱车的前轴扭矩。本申请还公开了一种四驱车的扭矩分配系统,其包括识别模块和扭矩分配模块。由于根据后轴的需求扭矩、后轴的电机最大输出扭矩和最大承受扭矩确定后轴的最终输出扭矩,从而兼顾电机性能与载荷转移对前后轴扭矩分配的影响,提高前后轴扭矩分配的精准程度。


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    Title :

    Torque distribution method and system for four-wheel-drive vehicle


    Additional title:

    一种四驱车的扭矩分配方法和系统


    Contributors:
    YU JUN (author) / PENG HAO (author) / LI SHICHENG (author) / CHEN WEIFANG (author)

    Publication date :

    2022-10-11


    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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