Rear axle driving assembly for electrocar

Abstract

The invention discloses a rear axle driving assembly for an electrocar. The power output end of a gear transmission is in transmission fit with the power input end of a differential mechanism, and the differential mechanism correspondingly outputs power to a left wheel axle and a right wheel axle by the left half axle and the right half axle of the differential mechanism. According to the rear axle driving assembly for the electrocar, a speed shift assembly is driven to directly input the power into the differential mechanism, and a speed shift system and a driving assembly are installed to a rear axle. The rear axle driving assembly for the electrocar has a simple and compact structure. Because a transmission chain is shortened, the transmission efficiency is more obviously improved, and stronger integrity is provided so as to avoid transmission interference caused by vibration. After a product is formed, the product is directly applied to a three-wheel electrocar and a four-wheel electrocar, has a better integration performance and is better favorable for a small electrocar. Meanwhile, the gear speed shift system is adopted, and power output is reasonably blended when the electrocar is driven on a flat ground and climbs. Compared with the prior art, the rear axle driving assembly for the electrocar is characterized in that power consumption for climbing is reduced, engine power is fully utilized on the flat ground, and the use cost is lowered while purposes of energy saving and environment protection are achieved.

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. Due to the characteristics of energy saving, environmental protection and lightness, and low cost of use, electric vehicles have attracted more and more attention. [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 climbing, ...

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 roads, using the existing single transmission structure, only the power output can be increased to achieve the purpose of climbing, which will cause a lot of waste of power. Moreover, 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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