Electric vehicle hydraulic brake system

Abstract

The invention discloses an electric vehicle hydraulic brake system. The electric vehicle hydraulic brake system comprises an oil tank, a hydraulic brake valve and an energy storage mechanism, whereinthe hydraulic brake valve and the energy storage mechanism are arranged on the oil tank; the hydraulic brake valve is connected to the energy storage mechanism through a pipeline, the energy storage mechanism is separately connected to a front axle brake, a rear axle brake and a parking brake commutator through pipelines, the front axle brake, the rear axle brake and the parking brake commutator are separately connected to the hydraulic brake valve through a brake oil return pipe, the hydraulic brake valve is disposed on the top of the oil tank and extends downward into the oil tank, the energy storage mechanism is disposed on the front surface or back surface of the oil tank, the hydraulic brake valve is connected to the energy storage mechanism through a pipeline, one end of the brake oil return pipe is connected to the hydraulic brake valve, and the other end of the brake oil return pipe is connected to the front axle brake, the rear axle brake and the parking brake commutator through pipelines. The electric vehicle hydraulic brake system is high in brake control precision and response speed and excellent in anti-interference capability, the vehicle speed is reduced smoothly ina braking process, the braking direction is stable, and the operation is quiet.

Description

technical field [0001] The invention belongs to the technical field of automobile hydraulic braking, and in particular relates to an electric automobile hydraulic braking system with strong anti-interference ability, stable working performance and quiet operation. Background technique [0002] With the increasing scarcity of oil resources in the world, the increasingly intensified conflict with the dependence of traditional fuel vehicles on oil, and the increasingly serious large-scale smog, the automotive industry, which is a large energy-consuming and emission-intensive industry, plays an important role in the energy-saving and emission-reduction strategy. choose. Facing the ensuing energy and environmental problems, China has listed the energy-saving, environmentally friendly, intelligent, and safe electric vehicle industry as an emerging strategy for key development. [0003] The pump station in the electric vehicle hydraulic braking system is a kind of electric motor i...

AI Technical Summary

Problems solved by technology

The steering, braking, and parking execution systems of automobiles in the prior art mostly use a combination of hydraulic power steering and pneumatic braking. Since the pneumatic braking needs to be filled with the air pump every time before it can be used, it takes a lot of time to start the car. It takes a long time to charge the air pump, which increases the start-up time of the vehicle, and the reliability of the pneumatic brake system is relatively poor compared with hydraulic brakes. It cannot maintain stable working performance under high-speed motion or bumpy conditions, thus affecting the safe driving of the car.

The existing hydraulic braking device has a large volume, complex structure, low control accuracy and low response speed. On the other hand, the installation space on the vehicle is limited, which increases the manufacturing and maintenance costs of electric buses. The hydraulic braking device is made of electric vehicles. The power provided by the dynamic control system is an important guarantee for the braking safety performance of new energy buses

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