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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.

Inactive Publication Date: 2007-05-09
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] Fig. 2 shows the voltage equalization device used in the charging and discharging process of a supercapacitor module according to the present invention. As shown in Figure 2, 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 The energy st...

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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.

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 Applications(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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