Integrated hydraulic pressure and mechanical force coupling electric power-assisted braking system

Abstract

The invention discloses an integrated hydraulic pressure and mechanical force coupling electric power-assisted braking system. The braking system comprises a first gear, a second gear, a power-assisted motor, a pedal push rod, a power-assisted pressure-building cylinder, a brake master cylinder, a hydraulic control unit and an electric control unit, wherein the first gear, the second gear, the power-assisted motor and the power-assisted pressure-building cylinder are assembled in a shell, the power-assisted motor is connected with the first gear and drives the first gear to rotate, the first gear is meshed with the second gear to drive the second gear to rotate synchronously, the middle of the second gear is connected with a screw rod in a threaded mode, the screw rod is of a hollow structure, and the screw rod is driven to move left and right in the rotating process of the second gear. The integrated hydraulic pressure and mechanical force coupling electric power-assisted braking system has the beneficial effects that the braking force of a driver and the braking force of the motor are simultaneously output and do not interfere with each other, the electric power-assisted brakingsystem can implement the functions of active braking, failure backup, braking energy recovery and the like, can achieve intelligent control of the vehicle, and can be used as a bottom layer actuator of an intelligent vehicle driving auxiliary system.

Description

[0001] The invention relates to an electric power-assisted braking system, in particular to an electric power-assisted braking system coupled with integrated hydraulic pressure and mechanical force. Background technique [0002] At present, the intelligentization and electrification of automobiles are the main development trends in the future, and the traditional vacuum-assisted hydraulic braking system can no longer meet the requirements. The development of electro-hydraulic brake (EHB) and electro-mechanical brake (EMB) is also restricted due to problems such as high energy consumption and no fail-safe backup. In recent years, the electric power-assisted braking system has become a research hotspot in the braking industry. The electric power-assisted braking system can realize partial decoupling or complete decoupling between the brake pedal and the master cylinder, ensuring that the vehicle has a good pedal feel while realizing braking energy recovery. At the same time, th...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an integrated electric power braking system coupled with hydraulic force and mechanical force in order to solve many problems existing in the use process of the existing vehicle electric power braking system

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