The coaxial type double-motor electric drive axle comprises a drive axle shell and two electric power assemblies which are symmetrically and coaxially arranged, each electric power assembly comprises a drive motor, a first planetary reducer, a gear shifting assembly, a second planetary reducer and a drive wheel, and the first planetary reducer comprises a first planet row and a second planet row; the driving motor is sequentially in transmission connection with the first planet row and the second planetary reducer through a half shaft, and the gear shifting assembly is connected with the second planet row. The two electric power assemblies are symmetrically arranged and coaxially arranged, so that the distribution of the drive axle is more reasonable, the theoretical mass center is coaxial with the axis of the drive axle shell, and the stress and vibration conditions are improved; by arranging the two driving motors and the two gear shifting assemblies, distributed driving can be achieved, a differential mechanism is omitted, the weight of the drive axle is greatly reduced, the structure is simplified, gear shifting can be achieved through the gear shifting assemblies, and the requirements of an automobile for the high speed and large torque of the drive axle are met.
本申请涉及一种同轴式双电机电驱动桥,包括驱动桥壳体及两对称设置、且同轴设置的电动力总成,每一电动力总成均包括驱动电机、第一行星减速器、换挡组件、第二行星减速器及驱动轮,第一行星减速器包括第一行星排及第二行星排;驱动电机通过半轴依次与第一行星排、第二行星减速器传动连接,换挡组件与第二行星排连接。通过将两电动力总成对称设置,且两电动力总成同轴设置,使得驱动桥分布更加合理,理论质心与驱动桥壳体轴线同轴,改善受力与振动状况;通过设置两驱动电机及两换挡组件,能够实现分布式驱动,且省去了差速器机构,极大地降低了驱动桥的重量,简化了结构,且换挡组件能够实现切换挡位,满足汽车对驱动桥高速及大扭矩的要求。
Coaxial double-motor electric drive axle
同轴式双电机电驱动桥
2023-08-11
Patent
Electronic Resource
Chinese
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