Novel full decoupling electronic hydraulic power-assisted brake system

Abstract

The invention discloses a novel full decoupling electronic hydraulic power-assisted brake system, comprising a main power source, a pedal feeling simulation mechanism, and a failure backup operating mechanism which acts on a main cylinder. A motor of the main power source slows down through a worm and a wormwheel, and rotation motion of the motor is converted to translation of a rack through a gear and the rack. Through a first section spring A, a first section spring B, and a second section spring of the pedal feeling simulation mechanism, pedal driving feeling is simulated. A failure protective jacket, a busing, and a locking sleeve of the failure backup operating mechanism control movement of a piston in the main cylinder, so as to act on a wheel brake through a vehicle body stability control system / anti-lock braking system, so as to generate corresponding braking force. The system has pedal simulation modular design, providing convenience for realizing adjustable pedal feeling, and providing convenience for system actual vehicle arrangement and maintenance. Combined with conventional ABS / ESC, active brake, and recovery of brake energy and failure protection are realized. The system is suitable to be used for blade electric vehicles and hybrid vehicles.

Description

technical field [0001] The invention relates to the field of vehicle braking systems, in particular to a decoupled electronic hydraulic power-assisted braking system for new energy vehicles. Background technique [0002] Since oil is a non-renewable energy source, energy conservation and environmental protection have become very important issues in the development of the automobile industry as energy shortages and environmental issues become increasingly prominent. This also makes electric vehicles become the main direction of the future development of the automotive industry. While developing electric vehicles, the automobile industries of various countries are trying their best to improve energy efficiency, save resources and protect the environment. In urban working conditions, the braking of the car is quite frequent, and the energy consumed by this part accounts for a large part of the total energy consumed by the car. Therefore, how to recycle this part of energy has...

AI Technical Summary

Problems solved by technology

Therefore, the electro-hydraulic composite braking system is widely used at this stage, and one of the common forms is the non-decoupled electro-hydraulic braking system. The regenerative braking force is provided by the driving motor during the idle stroke. After overcoming this idle stroke, the hydraulic brake intervenes to provide the total braking force together with the regenerative braking. This composite braking system retains the mechanical connection between the pedal and the hydraulic system, and is reliable. High performance and safety, but its recyclable braking energy is less, which deviates from the traditional brake pedal feeling

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