The invention provides an electric drive axle transmission system which realizes power output by matching double motors with different speed ratios, so that the motors fully work in a high-efficiency area, the driving feeling is improved, and the whole vehicle is simple in arrangement and low in cost. The device comprises two motors, specifically an EM-A motor and an EM-B motor, the EM-A motor is a driving motor of a main box, and the EM-B motor is a driving motor of an auxiliary box; a reduction gear assembly; a group of two-gear gear assemblies; the planet row assembly comprises a main reduction gear, a sun gear shaft, a sun gear, a planet gear and a planet carrier, the sun gear shaft is a hollow shaft, the input end of the sun gear shaft is sleeved with the main reduction gear, and the output end of the sun gear shaft is fixedly sleeved with the sun gear; a differential mechanism; the two half shafts are respectively a left half shaft and a right half shaft; the output end of the EM-B motor is connected with input teeth of the reduction gear assembly, output teeth of the reduction gear assembly are connected with the main reduction teeth in a meshed mode, and a planet carrier is fixedly installed on the outer circumference of the non-half-shaft output end of a shell of the differential mechanism.
本发明提供了电驱桥传动系统,其由双电机配合不同速比实现动力输出,使得电机在高效区充分工作、提升了驾驶感受,且整车布置简单、成本低。其包括:两电机,具体为EM‑A电机和EM‑B电机,EM‑A电机为主箱的驱动电机,EM‑B电机为副箱驱动电机;一减速齿轮组件;一组两档齿轮组件;一组行星排组件,其包括主减齿、太阳轮轴、太阳轮、行星轮、行星架,所述太阳轮轴为空心轴,所述太阳轮轴的输入端套装有所述主减齿,所述太阳轮轴的输出端固套有太阳轮;一差速器;以及两半轴,分别为左半轴、右半轴;所述EM‑B电机的输出端连接所述减速齿轮组件的输入齿,所述减速齿轮组件的输出齿啮合连接所述主减齿,所述差速器的壳体的非半轴输出端的外环周固装有行星架。
Electric drive axle transmission system
电驱桥传动系统
2023-04-28
Patent
Elektronische Ressource
Chinesisch
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