Super capacitor large current equalization method based on single-chip microcomputer control

Abstract

The invention discloses a super capacitor large current equalization method based on single-chip microcomputer control. Provided is a super capacitor system. The super capacitor system comprises at least two super capacitors in series connection, a first contactor and a second contactor, the number of which is same with that of the super capacitors, a large current discharge resistor, a super capacitor voltage detection module, a single-chip microcomputer controller and a protection device. The single-chip microcomputer controller obtains voltage of each super capacitor through the super capacitor voltage detection module; and when the balance degree between super capacitors is larger than a set threshold value, the super capacitor, of which the voltage is the largest, is discharged through the large current discharge resistor according to the set time. The method adopts a single-chip microcomputer to serve as a main equalization controller, thereby reducing cost of the system; through a contactor matrix manner, large current discharge of the super capacitor is realized, thereby improving equalization reliability and realizing large current discharge; and the method is simple to operate, safe and reliable and good in equalization effect.

Description

technical field [0001] The invention belongs to the technical field of equalization of supercapacitors, in particular to a method for equalizing large currents of supercapacitors based on single-chip microcomputer control. Background technique [0002] The development of fuel vehicles has caused the deepening of the global energy crisis, the continuous reduction of oil resources, and at the same time exacerbated the harm of rising temperatures and air pollution. The governments of most countries in the world and the automobile industry generally recognize that energy saving and emission reduction is the direction of the future development of the automobile industry, and the development of electric vehicles will be the best way to solve this difficulty. Electric vehicles have the advantages of low noise, no exhaust emissions, environmental friendliness, high thermal efficiency, low emissions, recyclable utilization, and improved energy structure. Various automobile manufactu...

AI Technical Summary

Problems solved by technology

When the capacity of the supercapacitor is relatively large, the discharge current of the discharge resistor will hardly meet the requirements of fast equalization

If the power of the discharge resistor corresponding to each supercapacitor is increased, its volume and heat dissipation will face new challenges. Existing methods that use resistance equalization rarely have large current equalization methods

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