Method and system for increasing brake kinetic energy recovery ratio

Abstract

The invention discloses a method for increasing brake kinetic energy recovery ratio, which is used for increasing the brake kinetic energy recovery ratio during braking of vehicles. The method includes: acquiring brake pedal displacement signals; determining the stroke of a brake pedal according to the brake pedal displacement signals; if the stoke of the brake pedal is larger than a first stroke and smaller than a third stroke, driving a motor to perform electric braking; and if the stroke of the brake pedal is larger than the second stroke, driving a brake system to perform mechanical braking, and driving the motor to perform electric braking. The invention further discloses a system for increasing the brake kinetic energy recovery ratio.

Description

technical field [0001] The invention relates to the technical field of hybrid power, in particular to a method and system for increasing the recovery ratio of braking kinetic energy. Background technique [0002] With the growth of the world's population and economy, the demand and usage of energy are also increasing, coupled with the emission of greenhouse gases leading to a large number of climate disasters, environmental pollution directly affects the quality of human life. Therefore, energy and environmental issues have prompted the development of new energy, energy-saving and environmentally friendly products. Hybrid vehicles are driven by two kinds of energy, which can save gasoline, reduce carbon dioxide and exhaust emissions, and are an important solution to energy conservation and emission reduction in transportation. Its energy-saving and environmental protection advantages are most prominent in cities, but in urban conditions, Vehicles need to start and brake fre...

AI Technical Summary

Problems solved by technology

[0004] However, when the brake pedal is under pressure, the brake system generates brake pressure, provides the braking torque acting on the wheels for braking, and consumes the kinetic energy of the vehicle, so the process of motor-assisted braking and power generation can only recover a relatively small part of kinetic energy , there is a problem that the braking kinetic energy recovery ratio is low

In addition, when the driver releases the accelerator pedal and slides with gears, the motor participates in the process of braking kinetic energy recovery, which will cause the vehicle to lose a deceleration zone, which is not conducive to the driver's control of the vehicle speed, and the braking kinetic energy of this part is uncontrollable

Images