KR100455017B1 - An electrolyte for high voltage Al capacitor - Google Patents
An electrolyte for high voltage Al capacitor Download PDFInfo
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- KR100455017B1 KR100455017B1 KR10-2001-0088779A KR20010088779A KR100455017B1 KR 100455017 B1 KR100455017 B1 KR 100455017B1 KR 20010088779 A KR20010088779 A KR 20010088779A KR 100455017 B1 KR100455017 B1 KR 100455017B1
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- electrolyte
- added
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- capacitor
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 23
- 239000003990 capacitor Substances 0.000 title claims abstract description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims abstract description 6
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims abstract description 5
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims abstract description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical compound CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- -1 ether compound Chemical class 0.000 abstract description 2
- 150000002828 nitro derivatives Chemical class 0.000 abstract description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 150000003863 ammonium salts Chemical class 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- NWCWSZOXIYDIOU-UHFFFAOYSA-N 8-butoxy-8-oxooctanoic acid Chemical compound CCCCOC(=O)CCCCCCC(O)=O NWCWSZOXIYDIOU-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
본 발명은 충분한 내전압을 가지면서 전해액의 전도도값이 향상되어 하이리플(High Ripple)용 소형화 제품에 사용가능하며, 고온에서 특성이 안정하여 사용온도 범위가 확대되고 장시간 사용가능한 전해 콘덴서 고압용 전해액에 관한 것으로서, 알루미늄 전해 콘덴서의 전해액에 있어서, 용매인 에틸렌 글리콜 60W%에 2부틸옥탄디오에이트 10W%와 암모늄세바케이트 3W%를 첨가하고, 전해질의 용해도를 향상시키고, 전해액의 내전압을 증가시키기 위해 보조 용매로서 에테르계 화합물인 디에틸렌글리콜 모노부틸에테르 25W%를 첨가하며, 용매와 용질의 과도한 중합을 방지하기 위해 메틸니트로소아니졸 1W%을 첨가하였으며, 전해액의 내전압 방지와 콘덴서의 수명 특성을 향상시키기 위해 니트로 화합물인 파라니트로페놀 1W%를 첨가하여 구성되는 것을 특징으로 한다.The present invention has a sufficient withstand voltage, and the conductivity value of the electrolyte is improved, so that it can be used in a miniaturized product for high ripple. In the electrolytic solution of an aluminum electrolytic capacitor, in order to improve the solubility of the electrolyte and to increase the withstand voltage of the electrolyte, 10W% of 2butyloctanedioate and 3W% of ammonium sebacate are added to 60W% of ethylene glycol as a solvent. As a solvent, 25W% of diethylene glycol monobutyl ether, an ether compound, was added, and 1% of methylnitrosoanizol was added to prevent excessive polymerization of the solvent and solute. In order to make a nitro compound paranitrophenol 1W% of the do.
Description
본 발명은 알루미늄 전해 콘덴서의 고압용 전해액에 관한 것으로, 특히 충분한 내전압을 가지면서 전해액의 전도도값이 향상되어 하이리플(High Ripple)용 소형화 제품에 사용가능하며, 고온에서 특성이 안정하여 사용온도 범위가 확대되고 장시간 사용가능한 전해 콘덴서 고압용 전해액에 관한 것이다.The present invention relates to an electrolytic solution for high pressure of an aluminum electrolytic capacitor, and in particular, having a sufficient withstand voltage, the conductivity value of the electrolytic solution is improved, so that it can be used in a miniaturized product for high ripple, and its characteristics are stable at a high temperature, and thus it is used in a temperature range. The present invention relates to an electrolytic capacitor for a high pressure which is expanded and can be used for a long time.
종래 고압용 콘덴서 중고압용 전해액은 일반적으로 에틸렌 글리콜을 주체로한 용매에 붕산계 전해질을 용해시켜 사용하거나 에틸렌 글리콜을 주체로 하는 용매에 아제라인산, 세바틴산등과 같은 이염기성의 유기산 또는 상기 산의 암모늄염을 용해시켜 사용하였다.Conventional high-pressure condenser medium pressure electrolytes are generally used by dissolving a boric acid-based electrolyte in a solvent mainly composed of ethylene glycol or a dibasic organic acid such as azeline acid, sebacic acid, or the like in a solvent mainly composed of ethylene glycol. Ammonium salt was used by dissolving.
상기의 붕산계 전해액은 에스테르화 반응에 의해 콘덴서 내부에 다량의 수분이 생성되고 전극박의 열화를 촉진시켜 tan δ등과 같은 특성의 악화가 발생되고, 사용중 발생하는 열이 콘덴서에 인가되어 100 ℃ 이상의 온도에 이를 경우 전해 콘덴서의 내부에서는 수분이 증발되어 콘덴서의 내압을 상승시키게 되며 이에 따라 케이스 방폭변이 작동되어 콘덴서가 파양이 되는 문제점이 있었다.In the boric acid-based electrolyte solution, a large amount of water is generated inside the condenser by the esterification reaction, and deterioration of the electrode foil is promoted, resulting in deterioration of characteristics such as tan δ and the like. When the temperature reaches the inside of the electrolytic capacitor, moisture is evaporated to increase the internal pressure of the capacitor. Accordingly, the explosion-proof case is operated, thereby causing the capacitor to be broken.
또한 이염기성산등의 전해액은 얻을 수 있는 내전압이 충분치 않고, 전해액의 전도도가 좋지 않아 저손실, low ESR 용 전해액으로 사용이 어려웠다. 또한 콘덴서의 사용 온도 범위가 작아지는 결점이 있다.In addition, electrolytes such as dibasic acids have insufficient withstand voltages and have poor conductivity, making it difficult to use as low loss, low ESR electrolytes. In addition, there is a drawback that the operating temperature range of the capacitor becomes small.
이와 같은 문제점을 해결하기 위해 디에틸렌글리콜과 같은 다가 알콜을 혼합 용매로 사용하였다. 이러한 경우 전해액의 내전압의 향상을 얻을 수는 있으나, 전도도가 약화되는 문제점이 있었다.In order to solve this problem, a polyhydric alcohol such as diethylene glycol was used as a mixed solvent. In this case, it is possible to obtain an improvement in the breakdown voltage of the electrolyte, but there is a problem in that the conductivity is weakened.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 전해액의 내전압을 높이고 전해액의 전도도를 향상시키며 고온에서의 특성을 안정화시킬 수 있는 알루미늄 전해 콘덴서용 전해액을 제공하는 것을 목적으로 한다.The present invention is to solve the above problems, an object of the present invention is to provide an electrolytic solution for an aluminum electrolytic capacitor that can increase the withstand voltage of the electrolyte, improve the conductivity of the electrolyte and stabilize the properties at high temperatures.
본 발명에 의한 실시예에 의한 알루미늄 전해 콘덴서용 전해액의 구성에 대해 알아보기로 한다.The structure of the electrolyte solution for aluminum electrolytic capacitors according to the embodiment of the present invention will be described.
본 발명에 의한 알루미늄 전해 콘덴서 전해액을 제조하기 위해서, 기존의 알루미늄 전해액에서 용매로 사용하는 에틸렌 글리콜에 Long chain 의 측쇄 이염기성산과 직쇄의 이염기성산 또는 그 암모늄염을 혼합하여 전해질로 사용하여 전해액의 전도도를 향상시키도록 한다.In order to prepare the aluminum electrolytic capacitor electrolyte according to the present invention, the conductivity of the electrolyte by mixing a long chain side chain dibasic acid and a straight chain dibasic acid or its ammonium salt with ethylene glycol used as a solvent in a conventional aluminum electrolytic solution To improve it.
본 발명의 실시예에서는 에틸렌글리콜이 40~70W% 사용되고, 2부틸옥탄디오에이트 6~15W% 와 암모늄세바케이트 2~6W%를 사용한다.In the embodiment of the present invention, 40 to 70 W% of ethylene glycol is used, and 6 to 15 W% of 2-butyloctanedioate and 2 to 6 W% of ammonium sebacate are used.
전해질의 용해도를 향상시키고 전해액의 내전압을 증가시키기 위해 보조 용매로서 에테르계 화합물인 디에틸렌글리콜모노부틸 에테르 10~40W%를 사용한다.To improve the solubility of the electrolyte and to increase the withstand voltage of the electrolyte, an ether compound of diethylene glycol monobutyl ether 10 to 40 W% is used.
또한, 용매와 용질의 과도한 중합을 방지하기 위해 메틸니트로소아니졸 0.1~2W%을 추가하고, 전해액의 내전압 저하 방지와 콘덴서의 수명 특성을 향상시기 위해 니트로 화합물인 파라니트로페놀 0.1~2W%를 추가하여 전해액을 완성시킨다.In order to prevent excessive polymerization of solvents and solutes, 0.1 to 2 W% of methylnitrosoanizol is added, and 0.1 to 2 W% of nitro compound paranitrophenol is used to prevent the decrease of the breakdown voltage of the electrolyte and improve the life characteristics of the condenser. In addition, the electrolyte is completed.
상기와 같이 여러 물질이 첨가되어 제조된 본 발명에 의한 전해액의 실시예와 종래의 기술을 다음과 같이 비교하였다.Examples of the electrolyte according to the present invention prepared by adding various materials as described above and the prior art were compared as follows.
[표 1]TABLE 1
[표 1]에 도시되어 있는 바와 같이 본 발명에 의한 실시예에서는 에틸렌 글리콜 60W%, 디에틸렌글리콜모노부틸 에테르 20W%, 2부틸옥탄디오에이트 10W%, 암모늄세바케이트 3W%, 메티니트로소아니졸 1W%, 파라니트로페놀 1W%를 각각 사용하였다.As shown in Table 1, in the embodiment according to the present invention, ethylene glycol 60W%, diethylene glycol monobutyl ether 20W%, 2butyloctanedioate 10W%, ammonium sebacate 3W%, methinitrosoanisol 1W% and paranitrophenol 1W% were used, respectively.
비교시 조건은 105℃ 용 450V/47㎌ 이고, 사용되는 콘덴서의 지름과 높이는 각각 16mm 와 35.5mm 이다.The comparison condition is 450V / 47 / for 105 ℃, and the diameter and height of the capacitor used are 16mm and 35.5mm, respectively.
동일 실험 조건에서 본 발명에 의한 실시예와 종래의 기술을 서로 비교하였을 때, 본 발명에 의한 전해액을 사용한 콘덴서가 기존의 전해액을 사용한 콘덴서와 비교하여 전도도와 내전압이 증가됨을 확인 할 수 있다.When comparing the embodiment according to the present invention and the prior art under the same experimental conditions, it can be seen that the capacitor using the electrolyte according to the present invention increases the conductivity and withstand voltage compared with the capacitor using the conventional electrolyte.
상기한 구성으로 되어 있는 본 발명은 알루미늄 전해 콘덴서의 전해액으로 사용되어 고온에서도 특성이 안정되어 사용온도 범위가 확대되고 사용 시간이 연장되는 효과를 갖는다.The present invention having the above-described configuration is used as an electrolytic solution of an aluminum electrolytic capacitor, so that its properties are stable even at high temperatures, thereby extending the use temperature range and extending the use time.
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2001-0088779A KR100455017B1 (en) | 2001-12-31 | 2001-12-31 | An electrolyte for high voltage Al capacitor |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2001-0088779A KR100455017B1 (en) | 2001-12-31 | 2001-12-31 | An electrolyte for high voltage Al capacitor |
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| Publication Number | Publication Date |
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| KR20030058358A KR20030058358A (en) | 2003-07-07 |
| KR100455017B1 true KR100455017B1 (en) | 2004-11-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100561264B1 (en) * | 2004-03-25 | 2006-03-14 | 파츠닉(주) | Ultrahigh voltage electrolyte of aluminium electrolytic condenser |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0169779B1 (en) * | 1995-12-29 | 1999-01-15 | 서두칠 | An electrolyte for al electrolytic condenser |
| JP2000188240A (en) * | 1998-10-13 | 2000-07-04 | Matsushita Electric Ind Co Ltd | Aluminum electrolytic capacitor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0169779B1 (en) * | 1995-12-29 | 1999-01-15 | 서두칠 | An electrolyte for al electrolytic condenser |
| JP2000188240A (en) * | 1998-10-13 | 2000-07-04 | Matsushita Electric Ind Co Ltd | Aluminum electrolytic capacitor |
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