The invention belongs to the technical field of vehicle transmission, and particularly relates to a compact-layout two-gear coaxial electric drive axle. The coaxial electric drive axle is provided with two speed reduction planet rows, a drive motor drives a first planet row sun gear, and meanwhile, a first planet row gear ring is connected with a box body to achieve power output of a first planet row frame; first-stage speed reduction of a transmission system is completed; the first planet row frame is connected with a second planet row sun wheel; a second planet row gear ring is connected with the box body through a brake; a second planet row frame is connected with the gear ring through a clutch; the second planet row frame outputs to a differential mechanism; and the differential mechanism is respectively connected with a left half axle and a right half axle. Different speed ratios of a speed changer are achieved by controlling the brake and the clutch, and the output working rotating speed requirements under different vehicle speed conditions can be met. Continuous change of the output speed can be achieved through coordination control of a motor, and the economical efficiency of the vehicle is improved.
本发明属于车辆传动技术领域,具体涉及一种紧凑布局的两档同轴电驱动桥。所述同轴电驱动桥具有两个减速行星排,驱动电机驱动第一行星排的太阳轮,同时第一行星排齿圈和箱体连接,实现第一行星排框架动力输出;完成传动系统一级减速;第一行星排框架和第二行星排太阳轮连接;第二行星排齿圈通过制动器和箱体连接;第二行星排框架和齿圈通过离合器连接;第二行星排框架输出到差速器,所述差速器分别连接左半轴和右半轴。通过控制制动器和离合器实现变速器的不同速比,可以适应不同车速情况下输出的工作转速需求。配合电机的协调控制可以实现输出速度的连续变化,实现车辆经济性的提高。
Compact-layout two-gear coaxial electric drive axle
一种紧凑布局的两档同轴电驱动桥
2021-04-09
Patent
Electronic Resource
Chinese