KR100587102B1 - High voltage electrolyte of aluminium electrolytic condenser - Google Patents
High voltage electrolyte of aluminium electrolytic condenser Download PDFInfo
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- KR100587102B1 KR100587102B1 KR1020040059076A KR20040059076A KR100587102B1 KR 100587102 B1 KR100587102 B1 KR 100587102B1 KR 1020040059076 A KR1020040059076 A KR 1020040059076A KR 20040059076 A KR20040059076 A KR 20040059076A KR 100587102 B1 KR100587102 B1 KR 100587102B1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
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Abstract
본 발명은 알루미늄 전해콘덴서 고압용 전해액에 관한 것이다.The present invention relates to an aluminum electrolytic capacitor high pressure electrolyte.
본 발명은 알루미늄 전해콘덴서 고압용 전해액에 있어서, 용매인 에틸렌글리콜 78중량%에 암모늄1.6데칸디카르복실레이트 10.5중량%를 첨가하고 피발릭산 4.5중량%을 첨가하며 암모니아가스 1.5중량%, 붕산암모늄 2.5중량%, 마니톨 2.5중량%, 파라니트로벤질알콜 0.5중량%를 혼합하여 구성되는 것을 특징으로 한다.The present invention is an aluminum electrolytic capacitor high pressure electrolyte, 10.5% by weight of ammonium 1.6 decane dicarboxylate is added to 78% by weight of ethylene glycol as a solvent, 4.5% by weight of pivalic acid, 1.5% by weight of ammonia gas, ammonium borate 2.5 It is characterized by consisting of mixing by weight, 2.5% by weight of mannitol, 0.5% by weight of paranitrobenzyl alcohol.
본 발명은 충분한 내전압을 가지면서 전해액의 전도도가 향상되어 하이리플(HIGH RIPPLE)용 소형화 제품에 적용가능하며 고온에서 특성이 안정하고 사용온도 범위가 확대됨은 물론 장시간 사용 가능한 장점이 있다.The present invention has a sufficient withstand voltage, and the conductivity of the electrolyte is improved, so that it can be applied to a miniaturized product for HIGH RIPPLE.
Description
본 발명은 알루미늄 전해콘덴서 고압용 전해액에 관한 것이다.The present invention relates to an aluminum electrolytic capacitor high pressure electrolyte.
본 발명은 충분한 내전압을 가지면서 전해액의 전도도가 향상되어 하이리플(HIGH RIPPLE)용 소형화 제품에 적용 가능하며 고온에서 특성이 안정하여 사용온도 범위가 확대됨은 물론 장시간 사용 가능하도록 한 것이다.The present invention is to improve the conductivity of the electrolyte while having a sufficient withstand voltage, and can be applied to miniaturized products for high ripple (Stable for high RIPPLE) and stable at high temperature, so as to extend the use temperature range, as well as to use for a long time.
알루미늄 전해콘덴서 중고압용 전해액은 일반적으로 에틸렌글리콜을 주체로한 용매에 붕산계 전해질을 용해시켜 사용하거나 에틸렌글리콜을 주체로한 용매에 아제라인산, 세바틴산 등과 같은 이염기성의 유기산 또는 상기산의 암모늄염을 용해시켜 사용하였다.A high pressure electrolytic solution for aluminum electrolytic capacitors is 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 an ammonium salt of the acid in a solvent mainly composed of ethylene glycol. It was used by dissolving.
상기 붕산계 전해액은 에스테르화 반응에 의해 다량의 수분이 생성되고 전극박의 열화를 촉진 TANδ 등 특성의 악화와 100℃ 이상의 전해콘덴서에는 수분이 증발되어 콘덴서의 내압을 상승시켜 케이스 방폭변이 작동되어 파양이 되는 결점이 있다.The boric acid-based electrolyte generates a large amount of water by the esterification reaction, promotes deterioration of the electrode foil, deteriorates characteristics such as TANδ, and evaporates moisture to the electrolytic capacitor at 100 ° C. or higher, thereby increasing the internal pressure of the condenser to operate the case. There is a drawback to this.
또한 이염기성산 등의 전해액은 필요한 내전압이 충분치 않고 전해액의 전도 도가 좋지 않아 저손실, LOW ESR용 전해액으로 사용이 어렵고 또한 사용온도범위가 작은 결점이 있다.In addition, electrolytes such as dibasic acids have the disadvantages that the required withstand voltage is not sufficient and the conductivity of the electrolyte is poor, making it difficult to use as a low loss, low ESR electrolyte, and having a small operating temperature range.
이와같은 문제점을 해결하기 위해 디에틸렌글리콜과 같은 다가알콜을 혼합용매로 사용하여 내전압은 다소 향상이 되나 450WV급 이상의 콘덴서에 적용하기에는 내전압이 충분하지 못한 결점이 있다.In order to solve this problem, polyhydric alcohols such as diethylene glycol are used as a mixed solvent, so that the breakdown voltage is somewhat improved, but there is a drawback that the breakdown voltage is not sufficient to be applied to a capacitor of 450WV or more.
본 발명은 충분한 내전압을 가지면서 전해액의 전도도가 향상되어 하이리플(HIGH RIPPLE)용 소형화 제품에 적용가능하며 고온에서 특성이 안정하여 사용온도 범위가 확대됨은 물론 장시간 사용 가능한 알루미늄 전해콘덴서 고압용 전해액을 제공하는데 목적을 두고 있다.The present invention has a sufficient withstand voltage and improves the conductivity of the electrolyte, which can be applied to miniaturized products for high ripple. The purpose is to provide.
이를 위해 본 발명은 알루미늄 전해콘덴서 고압용 전해액에 있어서, 용매인 에틸렌글리콜 78중량%에 암모늄1.6데칸디카르복실레이트 10.5중량%를 첨가하고 피발릭산 4.5중량%을 첨가하며 암모니아가스 1.5중량%, 붕산암모늄 2.5중량%, 마니톨 2.5중량%, 파라니트로벤질알콜 0.5중량%를 혼합하여 구성되는 알루미늄 전해콘덴서 고압용 전해액을 제공하고자 한다. To this end, the present invention is an aluminum electrolytic capacitor high pressure electrolyte, 10.5% by weight of ammonium 1.6 decane dicarboxylate is added to 78% by weight of the solvent ethylene glycol, 4.5% by weight of pivalic acid, 1.5% by weight of ammonia gas, boric acid It is to provide an aluminum electrolytic capacitor high pressure electrolyte consisting of a mixture of 2.5% by weight of ammonium, 2.5% by weight of mannitol, 0.5% by weight of paranitrobenzyl alcohol.
본 발명은 알루미늄 전해콘덴서 고압용 전해액에 있어서, 용매인 에틸렌글리콜 78중량%에 암모늄1.6데칸디카르복실레이트 10.5중량%를 첨가하고 피발릭산 4.5중량%을 첨가하며 암모니아가스 1.5중량%, 붕산암모늄 2.5중량%, 마니톨 2.5중량%, 파라니트로벤질알콜 0.5중량%를 혼합하여 구성되는 것을 특징으로 한다.The present invention is an aluminum electrolytic capacitor high pressure electrolyte, 10.5% by weight of ammonium 1.6 decane dicarboxylate is added to 78% by weight of ethylene glycol as a solvent, 4.5% by weight of pivalic acid, 1.5% by weight of ammonia gas, ammonium borate 2.5 It is characterized by consisting of mixing by weight, 2.5% by weight of mannitol, 0.5% by weight of paranitrobenzyl alcohol.
본 발명은 에틸렌글리콜용매에 LONG CHAIN의 측쇄 이염기성산인 1.6데칸디카르복실산 또는 그 암모늄염의 용액에 발레릭산(Valeric acid)을 용해시켜 전해액의 전도도와 내전압을 향상시켰다.The present invention dissolved valeric acid in a solution of 1.6 decane dicarboxylic acid or its ammonium salt, which is a side chain dibasic acid of LONG CHAIN, in an ethylene glycol solvent to improve conductivity and breakdown voltage.
또한 발레릭산의 용해도를 증가시키기 위해 암모니아가스를 주입하였으며 전해액의 내전압과 난연성(難燃性)을 개선하기 위해 붕산암모늄과 마니톨, 파라니트로벤질알콜 등을 첨가하여 전해액을 완성하였다.In addition, ammonia gas was injected to increase the solubility of valeric acid, and ammonium borate, mannitol, and paranitrobenzyl alcohol were added to improve the voltage and flame resistance of the electrolyte.
본 발명 알루미늄 전해콘덴서 고압용 전해액의 구성요소인 에틸렌글리콜은 50~85중량%, 암모늄1.6데칸디카르복실레이트는 6~8중량%, 발레릭산은 1~18중량%, 암모니아가스는 1~6중량%, 붕산암모늄은 0.1~5중량%, 파라니트로벤질알콜은 0.1~2중량%, 마니톨은 0.1~5중량%의 조성범위를 갖도록 하는 것이 바람직하다.Ethylene glycol is a component of the high pressure electrolytic solution of the aluminum electrolytic capacitor of the present invention 50 to 85% by weight, ammonium 1.6 decane dicarboxylate 6 to 8% by weight, valeric acid 1 to 18% by weight, ammonia gas 1 to 6 By weight, ammonium borate is 0.1 to 5% by weight, paranitrobenzyl alcohol is 0.1 to 2% by weight, mannitol is preferably to have a composition range of 0.1 to 5% by weight.
종래기술과 본 발명에 의한 전해액의 구성 및 콘덴서의 적용 예를 (105℃용 450V/470㎌ : 35Ψ×50ℓ)와 같은 조건으로 실험하여 [표 1]에서와 같은 결과를 나타내었다. The configuration of the electrolytic solution and the application example of the capacitor according to the prior art and the present invention were tested under the same condition as (450 V / 470 kV for 35 ° C: 35Ψ × 50 L), and the results shown in [Table 1] were shown.
[표 1]TABLE 1
이상에서는 본 발명의 바람직한 실시예에 대하여 설명하였으나 본 발명은 상기한 실시예에 한정되지 아니하며 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이고 그와 같은 변경은 기재된 청구범위 내에 있게 된다.In the above description of the preferred embodiment of the present invention, but the present invention is not limited to the above-described embodiment and those skilled in the art without departing from the gist of the present invention claimed in the claims Anyone may make various modifications, as well as such modifications fall within the scope of the appended claims.
본 발명은 충분한 내전압을 가지면서 전해액의 전도도가 향상되어 하이리플(HIGH RIPPLE)용 소형화 제품에 적용가능하며 고온에서 특성이 안정하고 사용온도 범위가 확대됨은 물론 장시간 사용 가능한 장점이 있다.
The present invention has a sufficient withstand voltage, and the conductivity of the electrolyte is improved, so that it can be applied to a miniaturized product for HIGH RIPPLE.
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