Electric automobile, and electric automobile body stabilizing method and system

Abstract

The invention discloses an electric automobile, and an electric automobile body stabilizing method and system. The electric automobile comprises a power battery, a super-capacitor and wheel side motors, wherein the super-capacitor is connected with the power battery and the wheel side motors are correspondingly arranged on wheels. The electric automobile body stabilizing method comprises the following steps of obtaining the electric quantity of the power battery after receiving a brake control instruction of the electric automobile; judging whether the electric quantity of the power battery isless than a preset electric quantity threshold or not; if the electric quantity of the power battery is larger than or equal to the preset electric quantity threshold, discharging the power battery by using the super-capacitor; and when the electric quantity of the power battery is less than the preset electric quantity threshold, carrying out feedback braking control on the wheel side motors. Therefore, by using the super-capacitor to discharge the power battery, the wheel side motors can provide feedback braking functions under any condition, a characteristic of rapid feedback braking responses of the motors is sufficiently utilized and a purpose of efficient and rapid braking is achieved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for stabilizing an electric vehicle body, a system for stabilizing an electric vehicle body and an electric vehicle with the system. Background technique [0002] With the development of electric vehicle technology and its supporting active safety technology, the decoupling active braking technology is gradually favored by the majority of automobile manufacturers, and the technology of using electric motors for regenerative braking is increasingly being pursued by automobiles Adopted by economical manufacturers. [0003] Since the related technology is only based on the traditional hydraulic or electro-hydraulic braking system for braking control, the fast response characteristics of the motor feedback braking have not been fully applied. For example, the current mass-produced models are mainly based on hydraulic braking. , supplemented by motor feedback braking, th...

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Problems solved by technology

[0003] Since the related technology is only based on the traditional hydraulic or electro-hydraulic braking system for braking control, the fast response characteristics of the motor feedback braking have not been fully applied. For example, the current mass-produced models are mainly based on hydraulic braking. , supplemented by motor feedback braking, the rapid response and efficiency of braking and body stability cannot meet the ultimate pursuit of users

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