Brake control system and control method of electric vehicle

Abstract

The invention provides a brake control system of an electric vehicle, wherein, a motor controller (11) is used for receiving electric signals which can indicate the brake depth to obtain the value of brake depth, calculating brake velocity value according to the added value of the brake depth in the monitoring time period, determining whether the electric vehicle is in the normal brake working condition or the emergent brake working condition according to the brake depth value and the calculated brake velocity value and outputting the electric signals used for controlling the output of the motive power of a motor (1) according to the determined working condition. The brake control method of the electric vehicle in the invention comprises the following steps: calculating the brake velocityvalue according to the added value of the brake depth in the monitoring time period; determining whether the electric vehicle is in the normal brake working condition or the emergent brake working condition according to the brake depth value and the calculated brake velocity value; and controlling the motive power output of the motor (1) correspondingly according to the determined working condition. The brake control system and control method in the invention can reach faster brake effects and improve brake safety.

Description

technical field [0001] The invention relates to an electric vehicle, in particular to a braking control system and a control method for the electric vehicle. Background technique [0002] The braking system of traditional fuel vehicles has evolved from the early mechanical braking system to the later hydraulic braking system to the recent electromechanical braking system and electronic hydraulic braking system. The safety and stability have been improving. The basic principle of braking is through Make the brake lining and the brake disc or brake drum close to each other to generate friction, and convert the kinetic energy of the vehicle forward or backward into heat energy generated by friction and dissipate it in the atmosphere. [0003] At present, due to people's increasing emphasis on environmental protection and effective and rational use of energy, electric vehicles with high-efficiency, energy-saving, and environmentally friendly models have become the development tr...

AI Technical Summary

Problems solved by technology

The existing electric vehicle braking system is still unable to quickly judge the normal braking and emergency braking of electric vehicles, and take correct measures for normal braking and emergency braking respectively to achieve faster braking effect and improve braking safety.

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