The invention discloses a torque control method and device for a four-wheel drive electric vehicle and the vehicle, relates to the technical field of electric vehicles, and mainly aims to synchronously optimize the problems of shaking abnormal sound and power hysteresis of the vehicle under the condition of torque zero crossing. According to the main technical scheme, the method comprises the steps: when the total torque of the vehicle is changed into feedback torque from driving torque, determining the total feedback power of the vehicle according to the total torque of the vehicle and the current vehicle speed; determining allowable feedback power of a front motor and a rear motor according to the real-time states of the front motor and the rear motor of the vehicle; determining a first motor for executing torque zero-crossing control by a preset torque control curve according to the allowable feedback power; determining a torque auxiliary control curve executed by a second motor according to the total feedback power and a preset torque control curve of the first motor, wherein the torque auxiliary control curve is used for executing non-zero-crossing control of the torque; and adjusting the output torque of the first motor and the output torque of the second motor according to the preset torque control curve and the torque auxiliary control curve.
本发明公开了一种四驱电动汽车的扭矩控制方法、装置以及车辆,涉及电动汽车技术领域,主要目的在于同步优化车辆在扭矩过零情况下产生的抖动异响与动力迟滞问题。本发明主要的技术方案为:在车辆总扭矩由驱动扭矩变为回馈扭矩时,根据车辆总扭矩以及当前车速确定车辆的总回馈功率;根据车辆前电机与后电机的实时状态分别确定前电机与后电机的允许回馈功率;根据允许回馈功率确定以预设扭矩控制曲线执行扭矩过零控制的第一电机;根据总回馈功率以及第一电机的预设扭矩控制曲线,确定第二电机所执行的扭矩辅助控制曲线,扭矩辅助控制曲线用于执行扭矩的非过零控制;根据预设扭矩控制曲线与扭矩辅助控制曲线分别调整第一电机与第二电机的输出扭矩。
Torque control method and device for four-wheel drive electric vehicle and vehicle
四驱电动汽车的扭矩控制方法、装置以及车辆
2021-04-09
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Torque control method of four-wheel drive electric vehicle
European Patent Office | 2020
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