Supercapacitor three-stage charging circuit and supercapacitor quick charging method thereof

Abstract

The invention discloses a supercapacitor three-stage charging circuit comprising a Buck converter circuit, a current sampling circuit, a charging mode control circuit and a charging driving circuit. A supercapacitor is connected with the output end of the Buck converter circuit. The current sampling circuit is connected with the Buck converter circuit. The charging mode control circuit is connected with the output end of the current sampling circuit, the supercapacitor and the reference voltage output end of the charging driving circuit. The charging driving circuit is connected with the output end of the charging mode control circuit and the output end of the current sampling circuit. The Buck converter circuit is connected with the PWM signal output end of the charging driving circuit. The invention also discloses a supercapacitor quick charging method of the supercapacitor three-stage charging circuit. The supercapacitor three-stage charging circuit is convenient to implement and low in cost so that charging speed of the supercapacitor can be enhanced, working stability and reliability are high, the charging and discharging performance of the supercapacitor can be effectively protected and practicality is high.

Description

Technical field [0001] The invention belongs to the technical field of super capacitor charging circuits, and specifically relates to a super capacitor three-stage charging circuit and a method for quickly charging the super capacitor. Background technique [0002] With the development of society and economy, people are paying more and more attention to green energy and ecological environment. As a new type of energy storage device, supercapacitors have attracted more and more attention due to their irreplaceable advantages. Supercapacitors have many advantages such as large storage energy, fast charging speed, long cycle life, high power density, good ultra-low temperature characteristics, and environmental protection. Compared with batteries, it has the advantages of lower series equivalent resistance, longer service life, wider temperature operating range, wider voltage variation range, maintenance-free and sealable. At present, the charging methods of supercapacitors mainly ...

AI Technical Summary

Problems solved by technology

However, there is still a lack of a supercapacitor charging circuit in the current technology that has a simple circuit structure, a reasonable design, and high operating reliability, can solve the disadvantages of supercapacitors in a single charging mode, and can effectively protect the charging and discharging performance of supercapacitors.

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