Super capacitance assistant power supply system of electric vehicle

Abstract

An auxiliary power supply system with super capacitors for the electrically driven vehicle is disclosed, which can store the regenerated and fed back braking energy and provide additional current to the motor when the vehicle is accelerating or climbing on slope. It is composed of the super capacitor module with high power density for releasing great current and the voltage regulator.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle drive control, and relates to an electric vehicle drive system using a supercapacitor as an auxiliary power supply. Background technique [0002] An important factor that restricts the wide application of electric vehicles is their short driving range, and regenerative braking is the key to saving energy and improving the driving range of electric vehicles. It has significant economic value and social benefits. At present, many test vehicles at home and abroad above has been realized. The regenerative braking on the existing electric vehicle is to make the motor work as a generator when the vehicle brakes, convert kinetic energy or gravitational potential energy into electric energy feedback and store it in the battery. [0003] The main disadvantage of this solution is that the battery will be charged and discharged frequently when the vehicle brakes frequently, which will cause certain...

AI Technical Summary

Problems solved by technology

[0003] The main disadvantage of this solution is that when the vehicle brakes frequently, the battery will be charged and discharged frequently, which will cause a certain loss to the battery and affect the life of the battery.

In addition, the battery is the only power source of the electric vehicle. When the vehicle accelerates or climbs a hill, the battery will be discharged with a large current, which is also detrimental to the battery life.

Images