The invention relates to the technical field of new energy automobiles, in particular to a motor mode switching method and device of an electric automobile and the electric automobile, and the motor mode switching method of the electric automobile comprises the following steps that whether a driving motor meets a mode switching condition or not is detected; if the mode switching condition is met, the actual torque of the driving motor is detected, and the driving motor is controlled to conduct torque unloading according to the unloading gradient value corresponding to the actual torque; and when the actual torque is unloaded to the preset torque, the driving motor is controlled to output the target meshing torque, so that gear meshing of the gearbox is completed, and when the actual torque is equal to the target meshing torque, the driving motor is controlled to carry out torque loading according to the loading gradient value corresponding to the actual torque. Therefore, the problems that in the prior art, when motor modes are frequently switched, gears of a gearbox are prone to impact, torque unloading and loading are fast, consequently, a vehicle is prone to shaking, stability is poor, and driving comfort and driving experience are reduced are solved.
本申请涉及新能源汽车技术领域,特别涉及一种电动汽车的电机模式切换方法、装置及电动汽车,其中,电动汽车的电机模式切换方法包括以下步骤:检测驱动电机是否满足模式切换条件;如果满足模式切换条件,则检测驱动电机的实际扭矩,控制驱动电机按照实际扭矩对应的卸载梯度值进行扭矩卸载;在实际扭矩卸载至预设扭矩时,控制驱动电机输出目标啮合扭矩,使得变速箱完成齿轮啮合,并在实际扭矩与目标啮合扭矩相等时,控制驱动电机按照实际扭矩对应的加载梯度值进行扭矩加载。由此,解决了相关技术中电机模式频繁切换时变速箱的齿轮易产生冲击、且扭矩卸载与加载较快,导致车辆易产生抖动、且平稳性较差,降低驾驶的舒适性及驾驶体验等问题。
Motor mode switching method and device of electric automobile and electric automobile
电动汽车的电机模式切换方法、装置及电动汽车
2021-11-16
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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