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A kind of supercapacitor matching method

A supercapacitor and voltage technology, applied in multiple hybrid/electric double-layer capacitors, etc., can solve problems affecting the life of supercapacitor modules, abnormal operation of supercapacitor modules, bursting of supercapacitor monomers, etc. Group efficiency, prolonging service life, and optimizing the effect of combination

Active Publication Date: 2017-01-25
山东精工能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although supercapacitors have many advantages, there are also many technical difficulties in application. Supercapacitors need to be used in series to form a supercapacitor module. Since each supercapacitor has certain differences, once the supercapacitors are connected If the difference exceeds a certain range, it may cause the entire supercapacitor module to work abnormally.
It not only affects the life of the supercapacitor module, but also easily causes extreme phenomena such as bursting of the supercapacitor monomer

Method used

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  • A kind of supercapacitor matching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1. 6 supercapacitors of 50F are connected in series:

[0028] (1) Classification of internal resistance: Use an AC internal resistance tester with a minimum resolution of 1μΩ to test the internal resistance of the 2.7V / 50F supercapacitor, and classify the product according to the internal resistance of 1mΩ;

[0029] (2) Series charging: Connect 40 2.7V / 50F supercapacitors in the same internal resistance range in (1) in series, charge them at a constant voltage to 80V with a regulated power supply, and charge them at a voltage of 80V Constant voltage charging for 1h;

[0030] (3) Voltage classification: After constant voltage charging for 1 hour, remove the supercapacitor cells connected in series with the fixture, and use a multimeter with a resolution of 1mV to measure the voltage of the 40 2.7V / 50F supercapacitor cells connected in series in (2). Divide 40 supercapacitors into categories according to 0.1V;

[0031] (4) Open circuit shelving: put the super...

Embodiment 2

[0034] Example 2. 6 2.7V / 300F supercapacitors are connected in series:

[0035] (1) Classification of internal resistance: Use an AC internal resistance tester with a minimum resolution of 1μΩ to test the internal resistance of the 2.7V / 300F supercapacitor, and classify the product according to the internal resistance of 0.5mΩ;

[0036] (2) Series charging: Connect 40 2.7V / 300F supercapacitors in the same internal resistance range in (1) in series, charge them at a constant voltage to 70V with a regulated power supply, and charge them at a voltage of 70V Constant voltage charging for 2h;

[0037] (3) Voltage classification: After 2 hours of constant voltage charging, remove the supercapacitor cells connected in series with the fixture, and use a multimeter with a resolution of 1mV to measure the voltage of the 40 2.7V / 300F supercapacitor cells connected in series in (2). Divide 40 supercapacitors into categories according to 0.1V;

[0038] (4) Open circuit shelving: put the ...

Embodiment 3

[0041] Embodiment 3. 18 2.7V / 1500F supercapacitors are connected in series:

[0042] (1) Classification of internal resistance: Use an AC internal resistance tester with a minimum resolution of 1μΩ to test the internal resistance of the 2.7V / 1500F supercapacitor, and classify the product according to the internal resistance of 0.1mΩ;

[0043] (2) Series charging: connect 50 2.7V / 1500F supercapacitors in the same internal resistance range in (1) in series, charge them to 75V with a regulated power supply, and charge them at a voltage of 75V Constant voltage charging for 5h;

[0044] (3) Voltage classification: After constant voltage charging for 5 hours, remove the supercapacitor cells connected in series with the fixture, and use a multimeter with a resolution of 1mV to measure the voltage of 50 2.7V / 1500F supercapacitor cells connected in series in (2). Divide 40 supercapacitors into categories according to 0.1V;

[0045] (4) Open circuit shelving: put the supercapacitor mo...

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Abstract

A distribution and assembly method for supercapacitors comprises the first step of grading according to internal resistance, wherein the supercapacitors of which the internal resistance difference is smaller than 5 percent in all monomer supercapacitors are distributed as one grade, the second step of performing series connection and charging, wherein the monomer supercapacitors in the same internal resistance grade are in series connection through clamps and then are charged in a constant-voltage mode under technological voltage UR for more than 30 min, the third step of grading voltage, the fourth step of placing open circuits, wherein open circuits of the monomer supercapacitors after voltage grading are placed at room temperature for 1 h-24 h, the fifth step of grading for the second time, wherein according to the monomer supercapacitors, after the placement, of the same voltage grade, the supercapacitors of which the voltage difference does not exceed 0.05 V in all the monomer supercapacitors are distributed as one grade, and the sixth step of performing series connection for assembly, wherein the supercapacitors, after grading for the second time, of the same voltage grade are welded to a voltage-sharing circuit board and are in series connection according to technological requirements to form a supercapacitor module.

Description

technical field [0001] The invention relates to a supercapacitor, in particular to a supercapacitor matching method. Background technique [0002] Supercapacitor is a new type of green energy storage device that can charge / discharge quickly. It has the dual functions of traditional electrolytic capacitors and batteries, its power density is much higher than that of batteries, and its charging and discharging speed is much faster than that of batteries; its energy density is much higher than that of traditional electrolytic capacitors. Compared with traditional electrolytic capacitors and batteries, supercapacitors have small size, high energy density, fast charge and discharge speed, long cycle life, high discharge power, wide operating temperature range (-40°C~85°C), good reliability and low cost. Advantages such as low cost. Therefore, supercapacitors have become a new, efficient, practical, green and environmentally friendly fast charge and discharge energy storage devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/10
CPCY02E60/13
Inventor 关成善宗继月王勇张敬捧李蜜蜜
Owner 山东精工能源科技有限公司