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Aluminium electrolytic capacitor specially used in LED driving power supply and manufacturing method thereof

An aluminum electrolytic capacitor, LED driving technology, applied in the direction of electrolytic capacitors, capacitors, capacitor terminals, etc., can solve the problems of LED driving power supply heating, poor product life characteristics, steam drum and other problems, to improve high temperature performance, long service life, Effect of high ripple current resistance

Active Publication Date: 2011-10-19
ZHAOQING BERYL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the miniaturized aluminum electrolytic capacitor technology dedicated to high temperature resistance and large ripple for LED drive power supply at home and abroad is not yet mature. Ordinary aluminum electrolytic capacitors used in LED drive power supply are prone to severe heat generation, steam drums, etc., which leads to poor product life characteristics.

Method used

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  • Aluminium electrolytic capacitor specially used in LED driving power supply and manufacturing method thereof
  • Aluminium electrolytic capacitor specially used in LED driving power supply and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] LED驱动电源专用铝电解电容器的制作方法,具体步骤如下

[0032] (1)选材并裁切:选用高耐压的阳极箔,选用高紧度低厚度的电解纸,选用添加有非活性金属的阴极箔,并对阳极箔、阴极箔和电解纸进行裁切;

[0033] (2)钉绕:在阴极箔与负导针的钉接处加贴有一片贴箔覆盖住钉接孔处不平整的凸起部分;

[0034] (3)循环式抽真空、加压含浸:将芯包浸入电解液,周期性对其加载负压和正压,使电解液充分浸渍到电解纸上;

[0035] 电解液包括主溶剂、辅助溶剂、主溶质、辅助溶质、闪火电压提升剂及消氢剂,所述主溶剂为乙二醇、γ-丁内酯、N,N-二甲基酰胺、乙二醇甲醚中的一种或任意多种;所述辅助溶剂为去离子水;所述主溶质为癸二酸铵、癸烷二羧酸或乙醇胺的一种或两种;所述辅助溶质为甲酸铵;所述闪电压提升剂为次亚磷酸,甘露醇,磷酸二氢铵的一种或任意多种;所述消氢剂为对硝基苯酚或对硝基苯甲醇。

[0036] 上述各组分按重量百分比的配方如下表所示:

[0037] main solvent

61.1％

Auxiliary solvent

15％

main solute

17.3％

Auxiliary solute

0.5％

Flash voltage booster

1.0％

Hydrogen remover

5.1％

[0038] (Table I)

[0039] (4)组装,将浸渍好的芯包与铝壳和盖体组成裸品电容器;

[0040] (5)套管,将裸品电容器套上绝缘套管;

[0041] (6)老化;

[0042] (7)特性测试。

Embodiment 2

[0044] LED驱动电源专用铝电解电容器的制作方法,具体步骤如下

[0045] (1)选用高耐压的阳极箔,选用高紧度低厚度的电解纸,选用添加有非活性金属的阴极箔,并对阳极箔、阴极箔和电解纸进行裁切;

[0046] (2)钉绕,在阴极箔与负导针的钉接处加贴有一片贴箔覆盖住钉接孔处不平整的凸起部分;

[0047] (3)循环式抽真空、加压含浸,将芯包浸入电解液,周期性对其加载负压和正压,使电解液充分浸渍到电解纸上;

[0048] 电解液包括主溶剂、辅助溶剂、主溶质、辅助溶质、闪火电压提升剂及消氢剂,所述主溶剂为乙二醇、γ-丁内酯、N,N-二甲基酰胺、乙二醇甲醚中的一种或任意多种;所述辅助溶剂为去离子水;所述主溶质为癸二酸铵、癸烷二羧酸或乙醇胺的一种或两种;所述辅助溶质为甲酸铵;所述闪电压提升剂为次亚磷酸,甘露醇,磷酸二氢铵的一种或任意多种;所述消氢剂为对硝基苯酚或对硝基苯甲醇。

[0049] 上述各组分按重量百分比的配方如下表所示:

[0050] main solvent

70.9％

Auxiliary solvent

5％

main solute

8.5％

Auxiliary solute

10％

Flash voltage booster

3.6％

Hydrogen remover

2.0％

[0051] (Table II)

[0052] (4)组装,将浸渍好的芯包与铝壳和盖体组成裸品电容器;

[0053] (5)套管,将裸品电容器套上绝缘套管;

[0054] (6)老化;

[0055] (7)特性测试。

Embodiment 3

[0057] LED驱动电源专用铝电解电容器的制作方法,具体步骤如下

[0058] (1)选用高耐压的阳极箔,选用高紧度低厚度的电解纸,选用添加有非活性金属的阴极箔,并对阳极箔、阴极箔和电解纸进行裁切;

[0059] (2)钉绕,在阴极箔与负导针的钉接处加贴有一片贴箔覆盖住钉接孔处不平整的凸起部分;

[0060](3) Cyclic vacuuming, pressurized impregnation, immersing the core pack in the electrolyte, periodically applying negative pressure and positive pressure to it, so that the electrolyte is fully impregnated on the electrolytic paper;

[0061] The electrolytic solution includes a main solvent, an auxiliary solvent, a main solute, an auxiliary solute, a flash voltage booster and a hydrogen remover, and the main solvent is ethylene glycol, γ-butyrolactone, N, N-dimethylamide, ethyl alcohol One or more of glycol methyl ethers; the auxiliary solvent is deionized water; the main solute is one or both of ammonium sebacate, decane dicarboxylic acid or ethanolamine; the auxiliary solute It is ammonium formate; the flash voltage raising agent is one or more of hypophosphorous acid, mannitol, and ammonium dihydrogen phosphate;...

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Abstract

The invention is directed to the technological field of electrolytic capacitor. The invention concretely discloses an aluminium electrolytic capacitor specially used in an LED driving power supply and a manufacturing method thereof. The aluminium electrolytic capacitor comprises an aluminium housing, a positive guide pin, an anode foil, a negative guide pin, a cathode foil and an electrolytic paper. The electrolytic paper is provided between the anode foil and the cathode foil and is reeled into a core bag with the anode foil and the cathode foil. A cover body is sleeved on the core bag and is arranged in the aluminium housing. A plaster foil is provided at the nailing position between the negative guide pin and the cathode foil. The paster foil covers the nailing hole of the cathode foil and the negative guide pin. The anode foil is highly overpressure resistant. The cathode foil is added with non-active metals. The electrolytic paper has a high tightness and a low thickness. The aluminium electrolytic capacitor is characterized by strong temperature resistance performance, long service life and miniaturized structure. The aluminium electrolytic capacitor uses a special-purpose high scintillation voltage electrolyte to ensure a long high temperature load life and a high temperature resistance wave current capability of the aluminium electrolytic capacitor.

Description

technical field [0001] 本发明属于电解电容器技术领域,特别涉及一种LED驱动电源专用铝电解电容器及其制作方法。 Background technique [0002] 随着节能理念的普及与深入,LED照明行业蓬勃发展,而LED照明的寿命主要取决于LED驱动电源内部铝电解电容的寿命、高温特性等。 [0003] 由于LED驱动电源朝着小型化、长寿命方向发展,这促使其对铝电解电容的要求也更为严苛。目前,国内外专用于LED驱动电源耐高温、大纹波的小型化铝电解电容技术尚未成熟,普通铝电解电容用于LED驱动电源易发生发热严重、汽鼓等现象,进而导致产品寿命特性差。 [0004] 为使LED驱动电源达到小型化、长寿命的要求,对LED驱动电源专用铝电解电容器的研发势在必行。 Contents of the invention [0005] 本发明的目的是克服现有技术的不足,提供一种LED驱动电源专用铝电解电容器,该铝电解电容器耐高温性能强,使用寿命长,且结构小型化。 [0006] 为了解决上述技术问题,本发明是按以下技术方案实现的: [0007] 本发明所述的LED驱动电源专用铝电解电容器,包括铝壳、正导针、阳极箔、负导针、阴极箔及电解纸,所述正导针与阳极箔钉接,负导针与阴极箔钉接,电解纸置于阳极箔和阴极箔之间并与阳极箔和阴极箔一起卷绕成芯包,芯包上套有盖体并置于铝壳内,所述负导针与阴极箔的钉接处设有一贴箔,该贴箔覆盖住阴极负导针的钉接孔,所述阳极箔为高耐压的阳极箔,所述电解纸为高紧度、低厚度的电解纸,所述阴极箔上添加有非活性金属Cu或Fe,且阴极箔表面经过化成处理,目前在行业内,采用的阴极箔是没有经过化成处理的。本发明中采用化成处理过的阴极箔,化成电压3~5V,可提高电容器的耐纹波性能。 [0008] 作为上述技术的进一步改进,所述阳极箔耐受的最高电压是1.5倍WV。 [0009] 本发明还公开了上述LED驱动电源专用铝电解电容器的制作方法,其具体制作步骤如下: [0010] (1)选材并裁切:选用高耐压的阳极箔,选用高紧度低厚度的电解纸,选用添加有非活性金属的阴极箔,并对阳极箔、阴极箔和电解纸进行裁切; [0011] (2)钉绕:在阴极箔与负导针的钉接处加贴有一片贴箔覆盖住钉接孔...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/008H01G9/04H01G9/042H01G9/07
Inventor 刘泳澎陈国燕包厚华黄建伟
Owner ZHAOQING BERYL ELECTRONICS TECH
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