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Charging / discharging voltage equilibrium device of super capacitor module

A technology of supercapacitor and voltage equalization, which is applied in the direction of electrical components and electric energy storage systems, etc., to achieve the effects of improving energy utilization and reliability, prolonging service life, and preventing overcharging

Inactive Publication Date: 2009-10-07
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a supercapacitor module charging and discharging voltage equalization device to solve the voltage equalization problem of the supercapacitor module under high voltage and high current charging and discharging

Method used

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  • Charging / discharging voltage equilibrium device of super capacitor module
  • Charging / discharging voltage equilibrium device of super capacitor module
  • Charging / discharging voltage equilibrium device of super capacitor module

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] figure 2 Shown is the voltage equalization device used in the charging and discharging process of a supercapacitor module according to the present invention. Such as figure 2 As shown, the supercapacitor C 1 、C 2 、C 3 、C 4 、C 5 、C 6 、C 7 、C 8 、C 9 connected in series in sequence to form a supercapacitor module, in which the supercapacitor C 1 The positive pole of the charger or the positive pole of the discharge load 500 is connected, C 9 The negative pole of the battery is connected to the ground of the charger or discharge load 500 . Supercapacitor C 1 、C 2 、C 3 The energy storage unit 100 is formed in series, and the output terminal M of the energy storage unit 100 1 , N 1 respectively with the supercapacitor C 1 positive electrode of the supercapacitor C 3 the negative connection. Supercapacitor C 4 、C 5 、C 6...

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Abstract

A supercapacitor module charging and discharging voltage equalization device is formed by electrically connecting a supercapacitor module, a voltage equalization controller, several inductance voltage equalizers and flying capacitor voltage equalizers. The supercapacitor module is composed of several energy storage units connected in series, and each energy storage unit is composed of several supercapacitors connected in series. An inductive voltage equalizer is used for voltage equalization between two adjacent energy storage units, and a flying capacitor voltage equalizer is used for voltage equalization in each energy storage unit. Under the action of the flying capacitor voltage equalizer and the inductance voltage equalizer, all the super capacitors in the super capacitor module can achieve voltage balance. The invention has high working efficiency, can effectively improve the voltage imbalance between supercapacitors, the voltage difference between each supercapacitor does not exceed a certain set range, prevents overcharging and overdischarging, and prolongs the use of supercapacitors Life, improving the energy utilization and reliability of the energy storage system.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J15/00
Inventor 李海冬齐智平冯之钺
Owner IND TECH RES INST
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