The invention provides a coaxial electric drive bridge, a control method of the coaxial electric drive bridge and a coaxial electric drive bridge system. The coaxial electric drive axle comprises a first motor, a second motor, four planetary gear sets, a differential mechanism and a gear shifting mechanism. The electric drive axle is connected with the planetary gear set through the first motor and the second motor, and switching of power flow paths is achieved through the gear shifting sliding sleeve and the switching element set. Specifically, an output shaft of the first motor is connected with a sun gear shaft of the first planetary gear set, the second motor is connected with a planet carrier shaft of the first planetary gear set and a sun gear shaft of the second planetary gear set, an input shaft of the differential mechanism is connected with a planet carrier shaft of the second planetary gear set, and finally transmission is conducted to wheels through the third planetary gear set and the fourth planetary gear set. Through the design of the gear shifting mechanism, the power transmission path is optimized under different working conditions, the transmission ratio is dynamically adjusted, and the problem that an existing coaxial electric drive axle is difficult to adapt to complex and changeable working conditions of a new energy automobile is solved.
本申请提供了一种同轴电驱桥、同轴电驱桥的控制方法和同轴电驱桥系统。同轴电驱桥包含第一电机、第二电机、四个行星齿轮组、差速器和换挡机构。该电驱桥通过第一电机和第二电机分别与行星齿轮组连接,并通过换挡滑套和切换元件组实现动力流路径的切换。具体地,第一电机的输出轴与第一行星齿轮组的太阳轮轴连接,第二电机与第一行星齿轮组的行星架轴及第二行星齿轮组的太阳轮轴连接,差速器的输入轴与第二行星齿轮组的行星架轴相连,通过第三、第四行星齿轮组最终传递至车轮。本申请通过换挡机构设计,实现在不同工况下优化动力传输路径,动态调整传动比,解决现有的同轴电驱桥难以适用于新能源汽车的复杂多变的工况的问题。
Coaxial electric drive axle, control method of coaxial electric drive axle and coaxial electric drive axle system
同轴电驱桥、同轴电驱桥的控制方法和同轴电驱桥系统
2025-04-11
Patent
Electronic Resource
Chinese