The invention relates to the technical field of electric vehicle power distribution, in particular to a pure electric four-wheel drive vehicle energy recovery torque distribution control method and system and a vehicle. The method specifically comprises the steps of obtaining vehicle condition parameters when a target vehicle runs, obtaining torque required by a driver and calculating a dynamic vertical load; calculating road adhesion coefficients and grades of four wheels of the target vehicle according to the dynamic vertical load, adjusting to obtain corrected driver demand torque, calculating, adjusting and correcting front and rear axle torque distribution coefficients to obtain front and rear axle torques, and transmitting the front and rear axle torques to a motor controller to execute distribution. According to the method, the energy recovery torque can be actively adjusted under different road condition states by combining the road condition and the vehicle state, so that the vehicle can obtain better energy recovery performance and stability margin. And the torque distribution coefficients before, after and after are actively adjusted according to the road adhesion grade and the vehicle state, so that the vehicle obtains better energy recovery performance, maneuvering performance and stability performance.
本发明涉及及电动汽车动力分配技术领域,尤其是涉及一种纯电动四驱车能量回收扭矩分配控制方法、系统及车辆。具体包括获取目标车辆行驶时的车况参数,获取驾驶员需求扭矩及计算动态垂向载荷;根据动态垂向载荷计算目标车辆四轮的路面附着系数和等级,调整得到修正后的驾驶员需求扭矩,计算并调整修正前后轴扭矩分配系数,得到前后轴扭矩,传递给电机控制器执行分配。本发明结合路况和车辆状态,会在不同路况状态下主动调整能量回收扭矩,从而使车辆能够获得更好的能量回收性能和稳定裕度。会根据路面附着等级和车辆状态,主动调整前后之后扭矩分配系数,从而使车辆获得更好的能量回收性能、操纵性能和稳定性能。
Pure electric four-wheel drive vehicle energy recovery torque distribution control method and system and vehicle
纯电动四驱车能量回收扭矩分配控制方法、系统及车辆
2024-04-05
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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