The invention discloses an electric vehicle four-wheel-drive torque distribution method and system and a vehicle. The method comprises the steps that the total demand torque of the whole vehicle is obtained; determining a whole vehicle demand state according to the driving parameter information, and outputting a front and rear axle torque distribution coefficient corresponding to the whole vehicle demand state; wherein the demand state comprises the highest driving efficiency, and the output of the front and rear axle torque distribution coefficient corresponding to the demand state of the whole vehicle comprises a first front and rear axle torque distribution coefficient obtained according to a front and rear axle driving force mathematical model based on simultaneous slipping of front and rear wheels and the total demand torque of the whole vehicle; obtaining a front-rear axle torque distribution coefficient according to the first front-rear axle torque distribution coefficient; and obtaining the target torque of the front and rear driving systems according to the front and rear axle torque distribution coefficient and the whole vehicle total demand torque. By means of the electric vehicle four-wheel-drive torque distribution method, the best road adhesion performance and the highest driving efficiency of the vehicle can be achieved.
一种电动车四驱扭矩分配方法、系统及车辆,包括:获取整车总需求扭矩;根据行驶参数信息确定整车需求状态,并输出与整车需求状态对应的前后轴扭矩分配系数;其中,需求状态包括驱动效率最高,输出与整车需求状态对应的前后轴扭矩分配系数包括:根据基于前后轮同时打滑时的前后轴驱动力数学模型和整车总需求扭矩得到的第一前后轴扭矩分配系数;根据第一前后轴扭矩分配系数得到前后轴扭矩分配系数;根据前后轴扭矩分配系数和整车总需求扭矩得到前后驱动系统的目标扭矩。通过该电动车四驱扭矩分配方法,可以实现车辆路面附着性能最好、驱动效率最高。
Electric vehicle four-wheel-drive torque distribution method and system and vehicle
电动车四驱扭矩分配方法、系统及车辆
2023-07-25
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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