Integrated uncoupling type electric power-assisted braking system applicable to regenerative braking

Abstract

The invention discloses an integrated uncoupling type electric power-assisted braking system applicable to regenerative braking, which aims at overcoming the problem of complex pedal uncoupling when in pedal feeling simulation and regenerative braking. The integrated uncoupling type electric power-assisted braking system comprises a braking pedal, an integrated electric power-assisted mechanism, a braking main cylinder, a liquid storage cylinder, a hydraulic system, four wheel cylinders and a liquid storage tank, wherein the integrated electric power-assisted mechanism comprises a braking pedal push rod and a braking push rod; a liquid-storage piston rod of the liquid storage cylinder is connected with a liquid-storage ball screw; the liquid storage cylinder is connected with a port A of a reversing valve of the hydraulic system; the braking pedal push rod is connected with the braking pedal; the braking push rod is connected with the braking main cylinder which is connected with the liquid storage tank; an oil port of a second chamber of the braking main cylinder is connected with a port P of a front-shaft isolating valve in the hydraulic system; an oil port of a first chamber of the braking main cylinder is connected with a port P of a rear-shaft isolating valve of the hydraulic system; a left-front-wheel pressure reducing valve and a right-front-wheel pressure reducing valve of the hydraulic system are connected with the wheel cylinders of two front wheels; and a right-rear-wheel pressure reducing valve and a left-rear-wheel pressure reducing valve of the hydraulic system are connected with the wheel cylinders of two rear wheels.

Description

technical field [0001] The invention relates to an electric power-assisted braking system belonging to the technical field of automobile engineering, more precisely, the invention relates to an integrated decoupling electric power-assisted braking system suitable for regenerative braking. Background technique [0002] 1. Brake booster [0003] At present, the hydraulic braking system of most automobiles uses vacuum boosting. When applied to new energy vehicles, a vacuum pump needs to be equipped separately to extract the vacuum. This solution adds a vacuum pump, which increases the cost and is not conducive to space layout. Another part of the car adopts motor-assisted braking, and the size of the assist is controllable. It does not require a vacuum pump and saves layout space. [0004] 2. Regenerative braking technology [0005] Automobile regenerative braking can realize the recovery of automobile braking energy and increase the utilization rate of the total energy of th...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the pedal feeling simulation and the complex problem of pedal decoupling during regenerative braking in the prior art, and to provide an integrated decoupling electric power-assisted braking system suitable for regenerative braking

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