The invention provides a torque control method and device for an electric drive system of an electric vehicle. The torque control method for the electric drive system of the electric automobile comprises the steps that according to an efficiency curve of the electric drive system, the maximum efficiency torque corresponding to the maximum efficiency of the electric drive system at the current rotating speed is obtained; the efficiency curve represents the rotating speed, the torque and the corresponding efficiency of the electric drive system; the request torque of the electric drive system at the current rotating speed is obtained; if the request torque is smaller than the maximum efficiency torque, controlling the electric drive system to output the request torque; and if the request torque is greater than the maximum efficiency torque, controlling the electric drive system to output torque greater than or equal to the maximum efficiency torque and less than the request torque. The electric vehicle can run at the high-efficiency point of the electric drive system as much as possible, energy consumption is reduced, and the cruising ability of the electric vehicle is improved.
本公开提供一种电动汽车的电驱系统的扭矩控制方法、装置。电动汽车的电驱系统的扭矩控制方法包括:根据电驱系统的效率曲线,获取电驱系统在当前转速下的最高效率对应的最高效率扭矩;效率曲线表示电驱系统的转速、扭矩和对应的效率;获取电驱系统在当前转速下的请求扭矩;若请求扭矩小于最高效率扭矩,控制电驱系统输出请求扭矩;若请求扭矩大于最高效率扭矩,控制电驱系统输出大于等于最高效率扭矩且小于请求扭矩的扭矩。本公开可以使电动汽车尽量运行在电驱系统的高效率点,节省能耗,提高电动汽车的续航能力。
Torque control method and device of electric drive system
电驱系统的扭矩控制方法、装置
26.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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