Air brake energy supply pipeline system of pure electric truck and control method thereof

Abstract

The invention discloses an air brake energy supply pipeline system of a pure electric truck and a control method thereof, and relates to the technical field of air brake systems. The air brake energysupply pipeline system comprises the components of an electric air compressor; an air dryer which is communicated with the electric air compressor through a first air supply pipeline, and a pressure switch is mounted on the air dryer; a protective valve which is communicated with the air dryer through a second air supply pipeline, and a three-way joint and a pressure sensor are arranged on the second air supply pipeline; a pressure switch which is used for feeding on-off signals of the pressure switch back to the vehicle control unit; a pressure sensor which is used for detecting the pressurevalue of the second air supply pipeline and feeding back to the vehicle control unit; and a whole vehicle controller which is used for controlling starting and stopping of the electric air compressoraccording to the on-off signal and the pressure value. According to the air brake energy supply pipeline system, the air using safety of the whole vehicle can be guaranteed, frequent starting and stopping of the electric air compressor are avoided, the service life of the electric air compressor is prolonged, and electromagnetic interference caused by frequent starting of the electric air compressor to other systems can be avoided.

Description

technical field [0001] The present application relates to the technical field of air brake systems, in particular to a pure electric truck air brake energy supply pipeline system and a control method thereof. Background technique [0002] At present, the demand for electric trucks in the domestic automobile market is gradually increasing, but the braking system of electric trucks is different from conventional engine trucks. Engine trucks provide air source through engine-driven air compressors, while electric truck braking systems need to be equipped with electric air compressors to provide air. [0003] In the related technology, ECU (Electronic Control Unit, electronic control unit) converts the output pressure of the electronically controlled dryer into a voltage signal to control its unloading, backflow recoil and re-supply. When the electronically controlled dryer is unloaded, it directly controls The electric air compressor stops. However, this control strategy has ...

AI Technical Summary

Problems solved by technology

[0004] In view of one of the defects in the prior art, the purpose of this application is to provide a pure electric truck air brake energy supply pipeline system and its control method to solve the problem of single acquisition signal in the control strategy of the related technology and the inability to accurately control the electric air pressure. machine start-stop problem

Images