The invention belongs to the technical field of mechanical transmission, and particularly provides a multi-motor electric drive axle braking energy recovery torque distribution method and device and a vehicle. The method comprises the following steps that electric drive axle braking energy demand torque and electric drive axle output end rotating speed are obtained; the braking energy recovery rate of the electric drive axle under different motor braking torque distribution proportions is calculated according to the obtained electric drive axle braking energy demand torque and the electric drive axle output end rotating speed in combination with the rotating speed of a motor; and according to the calculated braking energy recovery rates of the electric drive axle under different motor braking torque distribution proportions, the motor braking torque distribution proportion enabling the braking energy recovery rate of the electric drive axle to be the maximum is selected as the braking torque distribution proportion of the electric drive axle under the current working condition. And under the condition that the braking requirement of the vehicle is guaranteed, the braking energy recovery rate of the vehicle is increased through braking torque coordination and transfer among the multiple motors, and the cruising ability of the vehicle can be improved.
本发明属于机械传动技术领域,具体提供一种多电机电驱桥制动能量回收扭矩分配方法、装置及车辆,所述方法包括如下步骤:获取电驱桥制动能量需求扭矩和电驱桥输出端转速;依据获取的电驱桥制动能量需求扭矩和电驱桥输出端转速结合电机的转速,计算电驱桥在不同的电机制动扭矩分配比例下的制动能量回收率;依据计算得到的电驱桥在不同的电机制动扭矩分配比例下的制动能量回收率,选择使电驱桥制动能量回收率最大的电机制动扭矩分配比例,作为电驱桥在当前工况下的制动扭矩分配比例。在保障车辆制动需求的情况下,通过多个电机间的制动扭矩协调与转移,提升车辆制动能量回收率,有助于提升车辆的续航能力。
Multi-motor electric drive axle braking energy recovery torque distribution method and device and vehicle
多电机电驱桥制动能量回收扭矩分配方法、装置及车辆
2024-02-23
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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