Voltage balance circuit of super-capacitor module

Abstract

The invention discloses a voltage balance circuit of a super-capacitor module. The voltage balance circuit of the super-capacitor module comprises a voltage monitoring circuit, an over-voltage discharging circuit and an over-voltage alarm circuit, wherein the voltage monitoring circuit is connected with a single super-capacitor, and monitors the voltage of the single super-capacitor in real time; when the voltage of the single super-capacitor exceeds a preset value, the voltage monitoring circuit triggers the over-voltage discharging circuit which is connected with the voltage monitoring circuit to discharge the single super-capacitor, and triggers the over-voltage alarm circuit which is connected with the voltage monitoring circuit to give an alarm; and when the over-voltage discharging circuit discharges the voltage of the single super-capacitor until the voltage is within the preset value, the voltage monitoring circuit triggers the over-voltage discharging circuit to stop discharging the single super-capacitor. According to the voltage balance circuit of the super-capacitor module, when the super-capacitor module is discharged, the charging voltage of each single super-capacitor cannot exceed the preset value, and the safety and the reliability of the application of the super-capacitor module are further ensured.

Description

technical field [0001] The present invention relates to the technical field of supercapacitors, and more specifically, relates to a supercapacitor module voltage equalization circuit. Background technique [0002] Supercapacitor is a new type of energy storage element, which can manufacture a variety of energy storage devices. Supercapacitor is a supercapacity obtained by using a double-layer structure composed of activated carbon porous electrodes and electrolytes. Its performance is between traditional capacitors and batteries, with high power density and appropriate energy density. It has huge application value and market potential in electric power, lifting equipment, railway, communication, national defense, consumer electronics, etc., and has been widely concerned by countries all over the world. [0003] Since the working voltage of a single supercapacitor is generally not higher than 3V, it is necessary to combine multiple supercapacitors in series and parallel to f...

AI Technical Summary

Problems solved by technology

However, it is difficult to ensure that the capacity of each supercapacitor in the module is exactly the same, and it is also difficult to ensure that the leakage of each supercapacitor is also the same, so the charging voltage of each supercapacitor will be different. It is easy to cause overvoltage damage to the capacitor during the process

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