Voltage balance circuit of super-capacitor module

A technology of voltage equalization circuit and supercapacitor module, which is applied in battery circuit devices, measuring current/voltage, circuit devices, etc. It can solve the problems of different charging voltages, difficulty in ensuring the same, capacitor overvoltage damage, etc., to ensure safety Effects on Sex and Reliability
CN103187776AActive Publication Date: 2013-07-03ZHUZHOU ELECTRIC LOCOMOTIVE CO
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUZHOU ELECTRIC LOCOMOTIVE CO
Publication Date
2013-07-03

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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.
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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...

Claims

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