Vacuum brake boosting control system and vacuum brake boosting control method for electric cars

Abstract

The invention provides a vacuum brake boosting control system and a vacuum brake boosting control method for electric cars. The vacuum brake boosting control system comprises a brake device, a vacuumizing device and a vacuum brake boosting controller connected with the vacuumizing device. The brake device comprises a brake pedal, a booster cylinder assembly, a brake oilway and an oil storage tank which are sequentially connected. The vacuumizing device comprises a vacuum pump and a vacuum gas storage tank which are connected, and the vacuum gas storage tank is connected with the booster cylinder assembly and provided with a pressure sensor which is connected with the vacuum brake boosting controller so as to transmit gas pressure value measured in the vacuum gas storage tank to the vacuum brake boosting controller. When the measured gas pressure value is lower than the lower limit set gas pressure value, the vacuum brake boosting controller transmits vacuumizing control commands and drives a vacuumizing pump to vacuumize the vacuum gas storage tank.

Description

technical field [0001] The invention relates to brake control technology, in particular to a vacuum brake booster control system and control method for an electric vehicle. Background technique [0002] With the increasing awareness of environmental protection, traditional fuel vehicles are gradually being replaced by new electric vehicles. The traditional electric vehicle vacuum brake booster system is composed of a pressure switch, a vacuum pump controller and a vacuum pump. This system has no real-time control and related fault diagnosis functions, such as: air leakage, motor failure, sensor failure and other failures, causing the car to stop during the journey. The driver cannot monitor the situation of the vacuum brake control system in real time, and unfavorable things occur, which is not conducive to the development and promotion of electric vehicles. So in order to achieve this goal, we have developed a new type of vacuum brake booster control system for electric ve...

AI Technical Summary

Problems solved by technology

The traditional electric vehicle vacuum brake booster system is composed of a pressure switch, a vacuum pump controller and a vacuum pump. This system has no real-time control and related fault diagnosis functions, such as: air leakage, motor failure, sensor failure and other failures, causing the car to stop during the journey. The driver cannot monitor the situation of the vacuum brake control system in real time, and unfavorable things happen, which is not conducive to the development and promotion of electric vehicles

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