Electric vehicle rear axle drive assembly

Abstract

The invention discloses a rear axle drive assembly of an electric vehicle. The power output end of a geared transmission cooperates with the power input end of a differential. The wheel shaft and the right wheel shaft; the drive transmission assembly of the present invention directly inputs power to the differential, the transmission system and the drive assembly are installed on the rear axle, the structure is simple and compact, and the transmission efficiency is obviously improved due to the shortened transmission chain. And it has a strong integrity, avoiding transmission interference caused by vibration, and can be directly applied to three-wheel electric vehicles and four-wheel electric vehicles after forming a product. It has better integration performance and is better suitable for small electric vehicles; at the same time, The transmission system with gears is adopted, so that the electric vehicle can reasonably allocate the power output when it is flat and climbing. Compared with the existing technology, it can reduce the power consumption when climbing, and make full use of the power of the electric motor when it is flat, so as to achieve energy saving and environmental protection. Reduce the cost of use.

Description

technical field [0001] The invention relates to a motor vehicle component, in particular to an electric vehicle rear axle drive assembly. Background technique [0002] Electric vehicles (two-wheel, three-wheel and electric vehicles) are powered by on-board power batteries to drive electric vehicles. Because electric vehicles have the characteristics of energy saving, environmental protection, lightness, and low cost of use, more and more attention has been paid to them. [0003] Electric vehicles generally include power supply, motor, transmission, walking assembly and control system. Due to the operating characteristics of the electric motor, the transmission of electric vehicles generally does not use gear shifting, and directly controls the speed of the vehicle by adjusting the motor speed; while the output torque is relatively small. For large uphill roads, using the existing single transmission structure, only the power output can be increased to achieve the purpose of ...

AI Technical Summary

Problems solved by technology

[0003] Electric vehicles generally include power supply, motor, transmission, walking assembly and control system. Due to the operating characteristics of the electric motor, the transmission of electric vehicles generally does not use gear shifting, and directly controls the speed of the vehicle by adjusting the motor speed; while the output torque is relatively small. For large uphill road sections, using the existing single transmission structure, only increase the power output to achieve the purpose of climbing, which will cause a lot of waste of power, and, because the transmission structure is more concerned with driving on flat ground, therefore, The effect of increasing the power output for climbing is not ideal, and sometimes even the motor stall phenomenon occurs

[0004] However, in the existing electric vehicle transmission drive structure, the transmission chain is long and the structural layout is not compact enough, which makes the transmission efficiency of the whole vehicle low, and is not suitable for small electric vehicles, especially three-wheel electric vehicles.

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