Brake energy recovery system with pedal travel simulator, and control method of brake energy recovery system

Abstract

The invention discloses a brake energy recovery system with a pedal travel simulator, and a control method of the brake energy recovery system and aims to solve the problem that pedals are felt different from conventional vehicles when brake energy recovery systems of electric and blade electric vehicles recover energy. A hydraulic brake subsystem comprises a brake pedal, a vacuum booster, a main brake cylinder, a liquid storage cup, a normally-open electromagnetic valve, a normally-closed electromagnetic valve, the pedal travel simulator, a hydraulic adjusting unit, a vacuum pump and a one-way valve. The vacuum pump is connected with the vacuum booster, the pedal travel simulator is connected with the liquid storage cup through the one-way valve, the upper end of the brake pedal is in ball joint riveting with the vacuum booster, the main brake cylinder is connected with the liquid storage cup,, a front cavity of the main brake cylinder is connected with an A port of the normally-open electromagnetic valve, a port B of the normally-open electromagnetic valve is connected with a port C of the normally-closed electromagnetic valve and a port E of the hydraulic adjusting unit, a port D of the normally-closed electromagnetic valve is connected with the pedal travel simulator, and a rear cavity of the main brake cylinder is connected with a port F of the hydraulic adjusting unit. The invention further provides the control method of the brake energy recovery system.

Description

technical field [0001] The invention relates to a braking energy recovery system for a hybrid electric vehicle and a pure electric vehicle, more precisely, the invention relates to a braking energy recovery system with a pedal stroke simulator and a control method thereof. Background technique [0002] The regenerative braking system is one of the most important links in hybrid electric vehicles and pure electric vehicles. In the braking process, it is necessary to reasonably distribute the regenerative braking force on the basis of ensuring the braking feeling, and accurately control the braking force. However, the original braking system cannot guarantee the pedal feel during the regenerative braking process, and for domestic automakers, it is difficult to fully develop a new braking system to meet the needs of regenerative braking due to the relative lack of component resources and technology accumulation. Therefore, it is of practical significance to develop an independ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the problem that the pedal feeling is inconsistent with that of traditional vehicles when the braking energy recovery system of electric vehicles and pure electric vehicles recovers energy, and to provide a braking energy recovery system with a pedal stroke simulator and its control method

Images