The invention belongs to the technical field of mechanical transmission, and particularly provides an electric drive axle braking torque distribution method and device and a vehicle. The method comprises the steps that the maximum braking torque characteristic provided by electric drive axle motor braking energy recovery energy and the maximum temperature information allowed by a motor are configured; establishing an electric drive axle braking torque distribution model according to the configured information; brake torque demand information of the electric drive axle, temperature information of a motor in the electric drive axle and output rotating speed information of the electric drive axle are collected; and based on the acquired braking torque demand information of the electric drive axle and the temperature information of the motor, substituting the acquired braking torque demand information and the acquired temperature information into the established braking torque distribution model of the electric drive axle, and calculating to obtain braking torque distribution information of the electric drive axle under the current working condition. The motor temperature is selected as a braking torque distribution reference index, the motor braking energy recovery torque is controlled according to the motor temperature condition, and the motor braking load is adjusted under the condition that the vehicle braking torque requirement is guaranteed.
本发明属于机械传动技术领域,具体提供一种电驱桥制动扭矩分配方法、装置及车辆,所述方法包括:配置电驱桥电机制动能量回收能提供的最大制动扭矩特性和电机允许的最高温度信息;依据配置的信息建立电驱桥制动扭矩分配模型;采集电驱桥的制动扭矩需求信息、电驱桥中电机的温度信息和电驱桥输出转速信息;基于采集得到的电驱桥的制动扭矩需求信息和电机的温度信息,代入建立的电驱桥制动扭矩分配模型,计算得到电驱桥在当前工况下的制动扭矩分配信息。选择电机温度作为制动扭矩分配参考指标,依据电机温度情况控制电机制动能量回收扭矩,实现在保证车辆制动扭矩需求的情况下,调整电机制动负荷。
Electric drive axle braking torque distribution method and device and vehicle
一种电驱桥制动扭矩分配方法、装置及车辆
2024-02-06
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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