Rear suspension for electric vehicle and vehicle body

Abstract

The invention discloses a rear suspension for an electric vehicle. By employing the rear suspension provided by the invention, space utilization ratio and crash safety can be improved. The rear suspension is a torsion beam type suspension and comprises two longitudinal supporting arms and a cross beam for connecting the two longitudinal supporting arms, wherein the front ends of the two longitudinal supporting arms are connected with a wheel bracket; and the back ends of the two longitudinal supporting arms are connected with a rear vehicle body through lining supports. The invention also provides a vehicle body. A battery box is additionally arranged at the vehicle bottom in front of the beam of the rear suspension. The vehicle body has the following beneficial effects that the conventional design is broken through, the longitudinal supporting arms are reversely arranged, a new space is made in a safety region in front of the cross beam of the rear suspension so as to place a battery, and about 35 percent regular space is added to place the battery, so that the endurance mileage of the electric vehicle is increased, and in addition, crash safety protection to the battery is added. The invention also discloses a reversely arranged multi-connecting-rod suspension. Longitudinal connecting rods of the multi-connecting-rod suspension are reversely arranged, the front ends of the longitudinal connecting rods are connected with wheels, and the back front ends of the longitudinal connecting rods are connected with an auxiliary vehicle frame after backward movement.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a rear suspension and a vehicle body of an electric vehicle capable of improving space utilization and collision safety. Background technique [0002] Non-independent suspension (axle) and semi-independent torsion beam suspension (axle) are widely used in small, medium and small passenger cars. [0003] Such as Figure 5 As shown, the common semi-independent torsion beam suspension consists of two longitudinal brackets 11 and a beam 12 connecting them. Such as Figure 5 and Figure 6 As shown, in the torsion beam suspension of the prior art, the rear end of the longitudinal support arm 11 (in this patent specification, the front end and the rear end all take the normal driving direction as the front) and the wheel bracket (not shown in the figure) ), at a position close to the end point, the longitudinal support arm 11 is also connected to the spring and shock absorbe...

AI Technical Summary

Problems solved by technology

[0008] Because fuel is a liquid, conventional car fuel tanks have complex geometries to take full advantage of the space between the body and suspension that batteries cannot use efficiently

[0009] In addition, for electric vehicles using traditional torsion beam suspension, it is also possible to add batteries in the space under the rear floor behind the cross member, but the disadvantage is that in the event of a rear collision, the batteries arranged in this way are almost useless. Protection, the battery may catch fire and explode if it is impacted, so this design cannot meet the crash safety requirements in practice

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