Electric vehicle brake power recovering device

Abstract

The braking energy recovering device for electromobile consists of one small DC generator, one stepless speed changing friction wheel clutch, one braking handle, and one energy recovering and monitoring circuit. The device brakes through turning the handle, raises speed with the elastic ball with high friction coefficient to mesh with the wheel, and generates electricity with the DC generator. Changing the force to the handle can realize the stepless control of the braking speed. The braking generated electric energy is stored in the capacitor, converted in a chopping and boosting circuit to proper level and charged to the accumulator, and the electric energy is fed back under the control of a monolithic computer, with the energy recovering state being output to the man-machine interface. The present invention can save energy and reduce braking noise.

Description

technical field [0001] The invention relates to a braking energy recovery device, in particular to a braking energy recovery device for an electric vehicle. Background technique [0002] Behind the vigorous development of my country's electric vehicle industry, the energy and environmental problems brought about by electric vehicles have become increasingly prominent. The lead-acid batteries commonly used at present can generally charge and discharge 300 cycles, and the normal service life is only more than one year. At the same time, the frequent starting and stopping of vehicles caused by urban traffic congestion will consume a lot of power, and also greatly shorten the life of the battery. [0003] In addition, we have also seen many disadvantages of traditional brakes, such as the complete conversion of braking energy into heat energy dissipation, the brakes are fragile, easy to wear, unstable, become a hidden danger of accidents, a lot of noise pollution and so on. ...

AI Technical Summary

Problems solved by technology

If it is forced to charge, not only the energy utilization rate is low, but also the battery may be damaged, which will lead to a shortened service life.

[0005] Looking at the existing electrical energy recovery schemes for electric vehicles, the existing problems are: suitable for large motor vehicles, it is too complicated, expensive, and difficult to miniaturize; lack of energy buffer and feedback control system, the energy recovery rate is not high; Traditional brakes freely control the braking speed; lack of convenient operating mechanism or do not conform to the braking method people are used to; traditional braking acceleration is not high, and cannot be compatible with traditional brakes

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