Electric auxiliary air-assisted hydraulic brake system of electromobile

Abstract

The invention provides an electric auxiliary air-assisted hydraulic brake system of an electromobile. The electric auxiliary air-assisted hydraulic brake system comprises wheel hubs, a brake actuating component, a pedal braking component, an electric braking component, a wheel driving motor and a power battery, and further comprises a braking gear, wherein the brake actuating component comprises brake pads, brake cylinders, a brake valve, an air compressor, a gas storage tank, a pressure adjustor, a power gas chamber and a braking master cylinder; the braking gear is rotationally connected onto a push rod of the brake valve; the pedal braking component comprises a pedal, a pedal rotating shaft, a driving gear, a gearbox, a first guide rail and a first double-side rack slide block; the electric braking component comprises a second guide rail, a second double-side rack slide block, a worm, an electromagnet, a turbine, a reset spring and a travel switch; a control end of the travel switch is arranged on the pedal. The braking force of the motor and the braking force of the pedal are continuously adjusted through coordination in real time within a certain range by adopting a mechanical structure, the structure is relatively simple, the cost is reduced greatly, and the working reliability is remarkably improved.

Description

technical field [0001] The invention relates to a braking system of an electric vehicle, in particular to a braking system operated by electric auxiliary air pressure, belonging to the technical field of vehicle braking. Background technique [0002] At present, with the increasing emphasis on energy conservation and environmental protection, the use of electric vehicles is gradually increasing. The braking system is one of the vital systems of a car. Traditional automobile braking generally adopts hydraulic and pneumatic braking systems, which cannot realize the recovery of braking energy, and the friction loss of brake pads is relatively fast. At present, the braking system of electric vehicles, in addition to some traditional braking systems, also uses electric braking and mechanical combination (or hybrid) braking systems. Charge to realize energy recovery and save energy. For example, the Chinese patent document whose publication number is CN1986272A and whose invent...

AI Technical Summary

Problems solved by technology

[0003] Most of the control methods for electric braking and mechanical braking of electric vehicles in the above-mentioned prior art use integrated controllers (or similar single-chip control circuits, etc.) to determine the control according to the preset control logic and the signal of the sensor Time, the way the control actuator works, the number of times or frequency of control, etc. However, the entire process of controlling the relevant actuators needs to include steps such as collecting signals, judging, calculating, and executing, and it takes a certain amount of time in this process Delay, the size of the mechanical braking force cannot be adjusted in real time according to the size of the motor braking force; moreover, the control process in the prior art needs to meet certain conditions before controlling the action of the actuator, and then control the actuator to proceed when the next condition is met. In the next step, the control process is discontinuous and discontinuous; in addition, the structure of the control system is relatively complex, the use of more electronic components is more expensive and the work reliability is reduced

Images