Charging / discharging voltage equilibrium device of super capacitor module

A supercapacitor, voltage equalization technology, applied in electrical components, systems that store electrical energy, etc., to improve energy utilization and reliability, improve voltage imbalance, and prevent overcharging.
CN1960121AInactive Publication Date: 2007-05-09IND TECH RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
IND TECH RES INST
Publication Date
2007-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The device consists of the connecting electrically parts of a super capacitor module (SCM), the voltage balance controller, several inductance voltage eveners (IVE) and the fly-over capacitor voltage evener (FCVE). SCM consists of several serial energy storage units (ES). Each ES consists of several serial super capacitors (SC). IVE is used to even the voltage between the adjacent ESs. FCVE is used to even the voltage in each ES. Under the function of FCVE and IVE, all SC in SCU reaches an even voltage. The invention possesses a high working efficiency. It can effectively improve the uneven voltages between SCs. The voltage difference between all SC will not exceed a certain defined range. The invention avoids overcharging and over discharging so as to extend the capacitor life. The invention raises the energy use ratio and the reliability of the energy storage system.
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Description

technical field

[0001] The invention relates to a charging and discharging voltage equalization device for a supercapacitor module. Background technique

[0002] A supercapacitor is a new type of energy storage element that uses the principle of an electric double layer to directly store electrical energy. Its capacity can reach tens of thousands of farads, and its energy density is significantly higher than that of traditional electrostatic capacitors, while its power density maintains the advantages of electrostatic capacitors. Supercapacitors have the advantages of long cycle life, wide operating temperature range, high power density, fast charge and discharge, and environmental friendliness. In recent years, supercapacitors, as instantaneous and high-power energy storage devices, have been widely used in electric locomotive starting, backup power supply and other occasions. With the development of supercapacitor technology, supercapacitor energy storage technology is ex...

Claims

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