The invention relates to the technical field of electric vehicle control, in particular to an electric vehicle energy recovery torque exit speed control method and system. The problem that safety and smoothness of an electric vehicle cannot be considered simultaneously when driving wheels of the electric vehicle are locked and energy recovery is quitted is solved, the sliding rate of the driving wheels is calculated by monitoring the wheel speed, and the torque return-to-zero slope is obtained by looking up a table according to the sliding rate. Energy recovery is not stopped when slight slippage occurs, energy recovery is slowly stopped when light and medium slippage occurs, energy recovery is quickly stopped when heavy slippage occurs, and therefore both safety and smoothness are achieved.
本发明涉及电动汽车控制技术领域,尤其是涉及一种电动汽车能量回收扭矩退出速度控制方法及系统。解决电动车在发生驱动轮抱死退出能量回收时无法同时兼顾安全性及平顺性的问题,本发明通过监测轮速计算驱动轮滑移率,并根据滑移率查表得出扭矩归零斜率。在发生轻微滑移时不退出能量回收,在发生轻中度滑移时缓慢退出能量回收,在发生重度滑移时快速退出能量回收,从而达到了安全性和平顺性的兼顾。
Electric vehicle energy recovery torque exit speed control method and system
电动汽车能量回收扭矩退出速度控制方法及系统
2023-09-22
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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