Double-wishbone independent suspension device of rear-drive electric vehicle

Abstract

The invention provides a double-wishbone independent suspension device of rear-drive electric vehicle, which comprises two brake component assemblies, two rear hub supports, a right drive shaft, an auxiliary frame, a two-in-one drive axle, a motor controller, a left drive shaft, two suspension mechanisms and two shock absorber strut assemblies, and the brake component assemblies, the rear hub supports and the suspension mechanisms are installed on one side of the auxiliary frame. The brake component assembly is connected with the suspension mechanism through a rear hub support, and a shock absorber supporting column assembly is installed on the suspension mechanism. The other side of the auxiliary frame is provided with the other brake component assembly, the other rear hub support and the other suspension mechanism, the other brake component assembly is connected with the other suspension mechanism through the other rear hub support, and the other suspension mechanism is provided with the other shock absorber supporting column assembly. The double-wishbone independent suspension device has the beneficial effects that a complex double-wishbone independent suspension system, a brake system, a transmission system, an electric drive system and a motor control system are compactly arranged, and high-density integration of functions is achieved.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a double-wishbone independent suspension device for a rear-drive electric vehicle. Background technique [0002] Small electric vehicles have small vehicle size, insufficient space layout, and strict control of vehicle weight and cost. In order to meet the needs of space, weight, and cost, relatively simple suspension methods are often used, such as the front MacPherson independent suspension , non-independent rear suspension (that is, the overall bridge), torsion beam semi-independent suspension, single-arm independent suspension. This determines that the chassis and vehicle performance of small electric vehicles are limited to a certain extent, and poses great challenges to chassis performance design and debugging. Users report that the main pain points of driving small electric vehicles are large pitch before and after driving, strong roll feeling, and subjective ride experience. U...

AI Technical Summary

Problems solved by technology

This determines that the chassis and vehicle performance of small electric vehicles are limited to a certain extent, and poses great challenges to chassis performance design and debugging. Users report that the main pain points of driving small electric vehicles are large pitch before and after driving, strong roll feeling, and subjective ride experience. Uncomfortable and unstable handling problems are common

[0003] In order to make the car have better chassis and vehicle performance, the suspension system usually chooses multi-link independent suspension or double wishbone independent suspension, but these two suspension systems need to occupy a large space for layout.

In addition, the motor, electric drive reducer, motor controller, high-voltage control system, low-voltage control system, charging system and other electric-related components of electric vehicles are mostly arranged on the chassis. Therefore, it is necessary to carry out overall planning of the chassis space. The design of components is the only way to arrange the complex suspension system, electric drive system, electric control system, braking system, etc. reasonably. In addition to the space layout, it is also necessary to provide foreign object or anti-collision protection for the battery and electric drive system. , more functional requirements, and a greater challenge to the layout

[0004] Suspension system, braking system, drive system, and electric related systems have many types of parts, and the number of parts reaches hundreds. When assembling on the vehicle line, the assembly process is complicated and the assembly time is long. How to integrate these parts offline Modularization, reducing the time and cost of the vehicle assembly line, is also a problem that needs to be fully considered when designing a car

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