Back driving type electric automobile rear axle structure

Abstract

The invention discloses a back driving type electric automobile rear axle structure which comprises a transversely-arranged barrel-shaped rear axle shell. A power mechanism is arranged in the middle of the rear axle shell. The back driving type electric automobile rear axle structure further comprises a trailing arm and a damping and vibration reducing mechanism, wherein the front end of the trailing arm is connected with an automobile frame body located at the position of an automobile body chassis, and the rear end of the trailing arm is connected with the rear axle shell. The back driving type electric automobile rear axle structure is characterized in that the damping and vibration reducing mechanism comprises a barrel-shaped damper and a vibration reducing spring, the barrel-shaped damper and the vibration reducing spring are arranged at the positions, at the two ends of the power mechanism, of the rear axle shell, the lower end of the barrel-shaped damper and the lower end of the vibration reducing spring are connected with the rear axle shell, and the upper end of the barrel-shaped damper and the upper end of the vibration reducing spring are connected with an automobile frame. The back driving type electric automobile rear axle structure can adjust the vibration reducing performance and the damping performance so as to be applicable to an electric automobile, and has the advantages of being good in vibration reducing effect, convenient and fast to install, good in overall structure stability, convenient to install and overhaul and the like.

Description

technical field [0001] The invention relates to a rear-drive electric vehicle, in particular to a rear-axle structure of the rear-drive electric vehicle. Background technique [0002] An electric vehicle is a vehicle that uses a battery as an energy source, and converts electrical energy into mechanical energy through controllers, motors and other components to control the current and change the speed. The first electric car was produced in 1834 and it was driven by a DC motor. Today, electric vehicles have changed dramatically and come in many varieties. Among them, an electric vehicle (EV) refers to a vehicle powered by an on-board power supply, driven by a motor to drive the wheels, and conforms to the requirements of road traffic and safety regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely optimistic, but the current technology is still immature. [0003] In terms of electric vehicles, the "Development Plan for E...

AI Technical Summary

Problems solved by technology

[0005] Existing electric vehicles generally imitate the structure research and development of ordinary cars during research and development. For example, a kind of rear axle assembly disclosed by CN201410249550 belongs to this technology, and there are the following defects: 1. In the shock absorber, the shock absorber spring and The damper directly adopts the structure of the shock absorbing and damping device in the car, that is, the two are integrated together, but the existing shock absorbing and damping devices are all developed and designed for ordinary cars, and the matching degree of the shock absorbing performance and the damping performance is the same as Ordinary cars are suitable, and the weight of electric cars is much lower than that of ordinary cars, so the existing shock absorption and damping devices cannot adjust the shock absorption and damping performance separately. If the performance of the two does not match, the performance will affect each other. Integrated shock absorbers are not suitable for use in electric vehicles

2. The trailing arm is fixedly connected to the rear axle shell by welding or fastening with two bolts arranged in the same line, which has poor shock absorption effect and is inconvenient to install

3. The rear part of the car shell is an integral cover structure imitating the rear shell of an ordinary car, which is inconvenient for the installation and maintenance of the motor and the rear axle structure

Images