The invention discloses an electric vehicle braking energy recovery torque processing method and device, and the method comprises the steps: obtaining the opening degree of a brake pedal of an electric vehicle, and calculating the maximum energy recovery torque of a power system of the electric vehicle according to the parameters of the power system of the electric vehicle and the vehicle running speed of the electric vehicle if the opening degree of the brake pedal of the electric vehicle is at a preset opening degree upper limit; if the brake pedal of the electric vehicle is not located at the preset opening upper limit, the actual opening value k of the brake pedal of the electric vehicle and the brake pedal coefficient # imgabs0 # of the brake pedal of the electric vehicle under the actual opening value k are obtained; according to the maximum energy recovery torque of a power system of the electric automobile and the brake pedal coefficient # imgabs 1 #, the driver expected torque # imgabs 2 # under the actual opening value k is calculated; and calculating the expected braking torque of the motor by using the obtained expected torque # imgabs3 # of the driver and the specified gear speed ratio of the gearbox of the electric vehicle. The braking energy recovery efficiency of the electric commercial vehicle can be improved, the endurance mileage is increased, and the driving comfort is improved.
一种电动汽车制动能量回收扭矩处理方法及装置,获取电动汽车的制动踏板开度,若电动汽车的制动踏板在预设开度上限,根据电动汽车的动力系统参数以及电动汽车的车辆行驶速度,计算电动汽车的动力系统最大能量回收扭矩;若电动汽车的制动踏板未处在预设开度上限,获取电动汽车的制动踏板的实际开度值k,及电动汽车的制动踏板在实际开度值k下的制动踏板系数#imgabs0#;根据电动汽车的动力系统最大能量回收扭矩,以及制动踏板系数#imgabs1#,计算实际开度值k下的驾驶员期望力矩#imgabs2#;利用得到的驾驶员期望力矩#imgabs3#和电动汽车的变速箱指定挡位速比,计算电机期望制动扭矩。本发明能够提高电动商用车制动能量回收效率,提升续航里程,提高驾驶舒适性。
Electric vehicle braking energy recovery torque processing method and device
一种电动汽车制动能量回收扭矩处理方法及装置
2024-05-10
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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