A method for exhausting the braking system of an electric vehicle

Abstract

The invention discloses an exhaust method for brake systems of electric vehicles. The exhaust method includes treading brake pedals, gathering air in brake circuits at air bleed screw mounting holes,increasing the pressures of the brake circuits, switching on vacuum pumps at the moment and vacuumizing detection cavities; drawing air in the brake circuits into the detection cavities; driving pressure plungers in the detection cavities and gradually increasing the internal pressures of the detection cavities; terminating exhaust programs at the moment if the pressures of the detection cavitiesare higher than set values and extracting brake fluid in the detection cavities to a fluid storage cavity; repeatedly carrying out previous programs until the brake circuits are sufficiently exhaustedif the pressures of the detection cavities are not higher than the set values. The air which is about to be drawn into the detection cavities is mixed with the brake fluid. The fact that the brake fluid in the detection cavities accounts for a high proportion is illustrated if the pressures of the detection cavities are higher than the set values, and the fact that the brake circuits are sufficiently exhausted is further proved. The method has the advantages that the method can be implemented by the aid of a single person, and accordingly the efficiency can be improved; the exhaust programs can be accurately controlled, the brake circuits can be assuredly thoroughly exhausted, and excessive exhaust can be prevented.

Description

technical field [0001] The invention relates to the technical field of electric vehicle manufacturing, in particular to an exhaust method for a braking system of an electric vehicle. Background technique [0002] The braking system of an electric vehicle is usually a brake fluid tank that is filled with brake fluid, a brake master cylinder, a front brake wheel cylinder that controls the front brakes, a rear brake wheel cylinder that controls the rear brakes, a A closed system consisting of hydraulic regulators for hydraulic fluid, brake lines connected between the two components, and other components. When working, the basically incompressible brake fluid moves in the circuit of the system, stepping on the brake pedal, and through the boosting effect of the vacuum booster, the brake master cylinder pushes the brake fluid to move in the circuit, and then pushes the front brake The moving wheel cylinder and the rear brake wheel cylinder move, and the front and rear brakes wor...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of low efficiency and difficult to control accurately in the existing exhaust method of the electric vehicle braking system, and to provide an exhaust method for the electric vehicle braking system, which can realize single-person operation, thereby improving efficiency, and can accurately control the exhaust program to ensure thorough exhaust and avoid excessive exhaust

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