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Method for repairing short circuit in super capacitor

A supercapacitor and internal short-circuit technology, which is applied in the field of capacitors, can solve the problems of difficulty in repairing short-circuit products and low efficiency, and achieve the effects of solving short-circuit problems of finished and semi-finished products, easy operation, and avoiding the effects of overcharging hazards

Inactive Publication Date: 2010-05-05
NANJING SHUANGDENG SCI TECH DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new and efficient internal short-circuit repair method for supercapacitor products to solve the problems of difficulty in repairing short-circuit products and low efficiency in the production of existing supercapacitors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 40 1.5V3000F supercapacitor short-circuit products that have been injected with electrolyte, connect them to the Visual-LCN charge-discharge test system produced by Bitrode, and compile the charge-discharge program according to the following steps:

[0021] (1) Connect the positive and negative poles of the supercapacitor to the positive and negative poles of the charge and discharge power supply, then charge the supercapacitor with a constant current of 1A for 10S, then discharge the supercapacitor with a constant current of 1A for 10S, and repeat the above charge and discharge cycle 10 times. After each cycle of discharge, the electrostatic 0.1S monitors the voltage of the supercapacitor. If the voltage is greater than 0V, it means that the short circuit has been repaired. If the voltage is equal to 0V, it means that the short circuit is still there, and proceed to the next step.

[0022] (2) Charge the supercapacitor with a constant current of 5A for 5S, and then...

Embodiment 2

[0028] Take 40 1.5V80000F supercapacitor short-circuit products that have been injected with electrolyte, connect them to the Visual-LCN charge-discharge test system produced by Bitrode, and compile the charge-discharge program according to the following steps:

[0029] (1) Connect the positive and negative poles of the supercapacitor to the positive and negative poles of the charge and discharge power supply, then charge the supercapacitor with a constant current of 1.5A for 10S, then discharge the supercapacitor with a constant current of 1.5A for 10S, and repeat the above charge and discharge cycle 50 times. After each cycle of discharge, the electrostatic 0.1S monitors the voltage of the supercapacitor. If the voltage is greater than 0V, it means that the short circuit has been repaired. If the voltage is equal to 0V, it means that the short circuit is still there, and proceed to the next step.

[0030] (2) Charge the supercapacitor with a constant current of 10A for 20S, a...

Embodiment 3

[0036]Take 40 1.5V3000F semi-finished short-circuit products of supercapacitors in a dry state before liquid injection, connect them to the Visual-LCN charge-discharge test system produced by Bitrode, and compile the charge-discharge program according to the following steps:

[0037] (1) Connect the positive and negative poles of the supercapacitor to the positive and negative poles of the charge and discharge power supply, then charge the supercapacitor with a constant current of 0.5A for 10S, then discharge the supercapacitor with a constant current of 0.5A for 10S, and repeat the above charge and discharge cycle 5 times. Since the positive and negative poles of the supercapacitor semi-finished products that have been repaired have changed from a short circuit to an open circuit state, that is, the current value is 0. If the current value becomes 0 during the charging and discharging process, it means that the short circuit has been repaired. Proceed to the next step.

[003...

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PUM

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Abstract

The invention provides a method for repairing short circuit in a super capacitor, comprising the following steps: carrying out direct-current and constant-current charge and discharge on the super capacitor in short time, repairing the super capacitor by progressively improving current, thereby effectively solving the problem of short circuit in filled finished products and dry semi-finished products before filling in the process of producing the super capacitors. The method has obvious effect on repairing short circuit generated by direct connections of metal burr in the super capacitor, active carbon and active substance at septum breakage, can directly perform repairing operation on direct current charge and discharge equipment such as super capacitor formation equipment, and has no need of adding extra equipment, simple and feasible operation, therefore, production efficiency is greatly improved, and the repairing rate of short-circuit product can be up to more than 90%.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a method for repairing short-circuit products in the production process of super capacitors. Background technique [0002] Supercapacitor is a new type of energy storage product developed in recent years. It has excellent characteristics such as high power density, short charging time, and long service life. Compared with ordinary electrolytic capacitors, the capacity of supercapacitors is several orders of magnitude higher, reaching thousands to tens of thousands of farads. Compared with traditional secondary batteries, it has the characteristics of fast charging and discharging speed, high efficiency, no pollution to the environment, long cycle life, wide operating temperature range, and high safety performance. Supercapacitors do not undergo electrochemical reactions during charging and discharging, and their cycle life can reach more than 10,000 times. The charge-dischar...

Claims

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Application Information

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IPC IPC(8): H02J15/00
Inventor 苏迎东凌付冬佘沛亮张明
Owner NANJING SHUANGDENG SCI TECH DEV RES INST
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