KR20000025184A - Electrolyte for driving an al electrolytic capacitor - Google Patents
Electrolyte for driving an al electrolytic capacitor Download PDFInfo
- Publication number
- KR20000025184A KR20000025184A KR1019980042159A KR19980042159A KR20000025184A KR 20000025184 A KR20000025184 A KR 20000025184A KR 1019980042159 A KR1019980042159 A KR 1019980042159A KR 19980042159 A KR19980042159 A KR 19980042159A KR 20000025184 A KR20000025184 A KR 20000025184A
- Authority
- KR
- South Korea
- Prior art keywords
- electrolyte
- electrolytic capacitor
- ethylene glycol
- butyrolactone
- gamma
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 32
- 239000003792 electrolyte Substances 0.000 title abstract description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 54
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000008151 electrolyte solution Substances 0.000 claims description 14
- 239000002904 solvent Substances 0.000 abstract description 5
- 150000003839 salts Chemical class 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 239000004327 boric acid Substances 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- -1 boric acid ester Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000002798 polar solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004804 winding Methods 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
Landscapes
- 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)
Abstract
Description
본 발명은 Al 전해캐패시터의 전해액에 관한 것으로, 보다 상세하게는 Al 전해캐패시터에 주입되는 구동용 전해액의 스파크 전압을 향상시키고, 낮은 비저항과 넓은 온도특성을 갖는 Al 전해캐패시터의 구동용 전해액에 관한 것이다.The present invention relates to an electrolytic solution of an Al electrolytic capacitor, and more particularly, to an electrolytic solution for driving an Al electrolytic capacitor, which improves the spark voltage of a driving electrolytic solution injected into an Al electrolytic capacitor, and has a low specific resistance and a wide temperature characteristic. .
일반적으로 알루미늄(Al) 전해캐패시터는 알루미늄을 전극으로 사용하여 대향되는 두 전극판 사이에 유전체를 개재시켜 직류전압을 인가하면 에너지(전하)를 축적하는 기능을 갖는다. 상기 Al 전해캐패시터(electrolytic capacitor)는 알루미늄박막을 이용하여 제조되며, 에칭공정, 화성공정, 절단공정, 권취공정, 함침공정, 조립공정 및 재화성공정을 통해 Al 전해캐패시터가 제조된다. 즉, 상기 Al 전해캐패시터를 구성하는 양극박(+)과 음극박(-)의 사이에는 절연막이 삽설되어 Al 전해캐패시터를 구성하는 캔에 삽입된다. 상기 Al 전해캐패시터의 캔에 양극박, 절연막, 및 음극박을 삽입한 후 캔의 내부에 전해액을 주입하게 된다. 상기 전해액은 여러가지 화공약품을 조성해서 만든 액체로서 실질적인 음극역할을 한다. 특히, 중고압용 알루미늄 전해캐패시터의 구동용 전해액은 에틸렌 글리콜/붕산 에스테르계의 전해액이 사용되고 있다. 이러한 전해액은 가열에 의해 에틸렌 글리콜과 붕산의 에스테르화 반응이 진행되고, 이때 생성수가 생겨나며, 이 물이 전해캐패시터 중의 캐패시터소자의 재료인 알루미늄박과 반응하여 이것을 용해하고, 또한 수소가스를 발생하여 콘덴서의 내압상승을 초래하기 때문에 이 전해액을 사용한 전해캐패시터는 보다 고온의 목적에 대해서는 사용할 수 없다.In general, an aluminum (Al) electrolytic capacitor has a function of accumulating energy (charge) by applying a DC voltage through a dielectric between two opposite electrode plates using aluminum as an electrode. The Al electrolytic capacitor is manufactured using an aluminum thin film, and an Al electrolytic capacitor is manufactured through an etching process, a chemical conversion process, a cutting process, a winding process, an impregnation process, an assembly process, and a regeneration process. That is, an insulating film is inserted between the positive electrode foil (+) and the negative electrode foil (-) constituting the Al electrolytic capacitor and inserted into the can constituting the Al electrolytic capacitor. After the positive electrode foil, the insulating film, and the negative electrode foil are inserted into the can of the Al electrolytic capacitor, the electrolyte is injected into the can. The electrolyte is a liquid made by forming various chemicals and serves as a substantial cathode. In particular, an electrolytic solution of ethylene glycol / boric acid ester is used as a driving electrolyte of a high pressure aluminum electrolytic capacitor. The electrolytic solution undergoes an esterification reaction of ethylene glycol and boric acid by heating, and at this time, generated water is generated. The electrolytic capacitor using this electrolytic solution cannot be used for higher temperature purposes because it causes an increase in the internal pressure.
따라서, 전해캐패시터를 보다 고온의 목적에 대해 사용할 수 있도록 같은 계열로 에스테르화를 촉진하여 생성수를 제거한 전해액도 제안되어 있으나, 물과의 반응은 억제되지만 전해액의 점도가 증대되고, 비저항이 현저하게 높아지며, 이 전해액을 사용한 전해캐패시터에서는 손실각의 정접 및 고주파에서의 임피던스가 현저하게 증대되어 고특성에는 사용할 수 없다. 이러한 이유로부터 고온도용 전해 캐패시터에는 에틸렌 글리콜/붕산 에스테르계의 전해액은 사용되지 않고, 비교적 분자량이 큰 유기산 또는 그 염을 용질로 하는 유기산계 전해액이 사용 및 검토되고 있다. 중고압용 유기산계 전해액의 용질로는 1.6-데칸 디카르본산이 공지되어 있으나, 1.6-데칸 디카르본산을 포함하는 전해액을 사용한 전해캐패시터는 용질 그 자체가 캐패시터소자를 형성하는 알루미늄박과 반응하기 때문에 초기 정전용량이 낮고, 또한, 고온부하시험 또는 고온무부하시험에 있어서, 정전용량의 극단적인 감소 및 현저한 누설전류의 증대가 나타나서 보다 성능이 높은 전해캐패시터에 사용하기에는 적절하지 않다.Therefore, an electrolytic solution is also proposed to promote the esterification in the same series to remove the produced water so that the electrolytic capacitor can be used for higher temperature purposes, but the reaction with water is suppressed but the viscosity of the electrolytic solution is increased and the specific resistance is remarkably increased. In the electrolytic capacitor using this electrolyte, the loss angle tangent and the impedance at high frequency are remarkably increased and cannot be used for high characteristics. For this reason, an ethylene glycol / boric acid ester-based electrolyte is not used for a high temperature electrolytic capacitor, and an organic acid-based electrolyte solution using a relatively high molecular weight organic acid or a salt thereof is used and examined. 1.6-decane dicarboxylic acid is known as a solute of the medium-pressure organic acid-based electrolyte, but the electrolytic capacitor using the electrolyte containing 1.6-decane dicarboxylic acid reacts with the aluminum foil forming the capacitor element itself. The initial capacitance is low, and in the high temperature load test or the high temperature no load test, an extreme decrease in the capacitance and a significant increase in the leakage current appear, which is not suitable for use in a higher performance electrolytic capacitor.
또한, 종래 Al 전해캐패시터에 사용되는 에틸렌글리콜(ethylene glycol)은 폴라 솔벤트(polar solvent)로 염(salt)의 용해는 좋으나 온도특성(mp -10℃)이 나쁜 문제점이 있고, 감마-뷰티로락톤(γ-Butyrolactone)은 넓은 온도범위(mp -40℃, bp 200℃)에서 사용이 가능한 특성을 가지나 기본 용매(Basic Solvent)이므로 전해액의 비저항값을 낮추는 염의 용해가 용이하지 않은 문제점이 있다.In addition, the ethylene glycol (ethylene glycol) used in the conventional Al electrolytic capacitor is a polar solvent (polar solvent) is good solubility of the salt (salt), but the temperature characteristics (mp -10 ℃) has a problem that is bad, gamma-butyrolactone (γ-Butyrolactone) has a property that can be used in a wide temperature range (mp -40 ℃, bp 200 ℃), but because it is a basic solvent (Basic Solvent) there is a problem that it is not easy to dissolve the salt to lower the specific resistance value of the electrolyte.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 Al 전해캐패시터에 주입되는 구동용 전해액의 스파크 전압을 향상시키고, 낮은 비저항의 특성을 갖으며, 넓은 온도영역에서 사용이 가능한 Al 전해캐패시터의 구동용 전해액을 제공하는데 있다.The present invention has been made to solve the above problems, an object of the present invention is to improve the spark voltage of the driving electrolyte injected into the Al electrolytic capacitor, has a characteristic of low specific resistance, and can be used in a wide temperature range It is possible to provide an electrolytic solution for driving an Al electrolytic capacitor.
상기 목적을 달성하기 위하여 본 발명은 160WV이상의 고압에서 사용되는 에틸렌글리콜(ethylene glycol)과 160WV이하의 저압에서 사용되는 감마-뷰티로락톤(γ-Butyrolactone)을 일정한 비율로 혼합한 Al 전해캐패시터의 구동용 전해액을 제공한다.In order to achieve the above object, the present invention drives Al electrolytic capacitors in which ethylene glycol (ethylene glycol) used at a high pressure of 160WV or higher and gamma-butyrolactone (γ-Butyrolactone) used at a low pressure of 160WV or less are mixed at a constant ratio. Provide a solution electrolyte.
본 발명에 의하면, Al 전해캐패시터의 구동용 전해액을 제공하기 위하여 전해액을 구성하는 용매로는 에틸렌글리콜과 감마-뷰티로락톤을 일정한 비율로 혼합하여 사용함으로써 에틸렌글리콜에 의해 염의 용해가 좋아지고, 감마-뷰티로락톤에 의해 온도특성이 좋아지며, 스파크전압이 높고, 비저항이 낮은 전해액을 얻을 수 있다.According to the present invention, in order to provide an electrolytic solution for driving an Al electrolytic capacitor, the solvent constituting the electrolytic solution is used by mixing ethylene glycol and gamma-butyrolactone in a constant ratio to improve salt dissolution by ethylene glycol and gamma. -Beautirolactone gives better temperature characteristics, high spark voltage, and low electrolyte resistance.
이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
먼저, Al 전해캐패시터에 사용되는 전해액은 Al 전해캐패시터의 특성을 잘 구현할 수 있어야 하며, Al 전해캐패시터가 정격전압에 잘 견딜 수 있도록 하는데 많은 비중을 차지하므로 Al 전해캐패시터는 스파크전압(spark voltage)값이 높아지고, 낮은 비저항값을 갖으며, 넓은 온도범위에서 사용할 수 있는 전해액을 사용해야 한다. 따라서, 상기와 같은 특성을 실현할 수 있도록 Al 전해캐패시터의 전해액은 160WV이상의 고압에서 사용되고 염의 용해력이 좋은 에틸렌글리콜(ethylene glycol)과, 160WV이하의 저압에서 사용되고 넓은 온도범위에서 사용되는 감마-뷰티로락톤(γ-Butyrolactone)을 60∼90 : 40∼10의 비율로 혼합하게 된다. 상기 에틸렌글리콜과 감마-뷰티로락톤을 일정한 비율로 혼합하여 전해액을 제조하면 에틸렌글리콜에 의해 염이 많이 용해되므로 비저항값이 낮아지고, 스파크전압이 높아진다.First, the electrolyte used in the Al electrolytic capacitor should be able to implement the characteristics of the Al electrolytic capacitor well, and the Al electrolytic capacitor has a spark voltage value because it takes up a lot of weight to make the Al electrolytic capacitor withstand the rated voltage well. Should be used, the electrolyte has a low specific resistance and can be used over a wide temperature range. Therefore, in order to realize the above characteristics, the electrolyte of Al electrolytic capacitor is used at high pressure of 160WV or higher, ethylene glycol having good solubility of salt, and gamma-butyrolactone used at low pressure of 160WV or lower and used in a wide temperature range. (γ-Butyrolactone) is mixed at a ratio of 60 to 90:40 to 10. When the electrolyte is prepared by mixing the ethylene glycol and gamma-butyrolactone in a constant ratio, since the salt is dissolved by ethylene glycol a lot, the specific resistance is lowered and the spark voltage is increased.
이상 설명에서 알 수 있는 바와 같이, 본 발명은 Al 전해캐패시터의 구동용 전해액을 제공하기 위하여 전해액을 구성하는 용매로는 에틸렌글리콜과 감마-뷰티로락톤을 일정한 비율로 혼합하여 사용함으로써 에틸렌글리콜에 의해 염의 용해가 좋아지고, 감마-뷰티로락톤에 의해 온도특성이 좋아지며, 스파크전압이 높고, 비저항이 낮은 전해액을 얻을 수 있다.As can be seen from the above description, the present invention provides ethylene glycol and gamma-butyrolactone by mixing ethylene glycol and gamma-butyrolactone as a solvent to form an electrolyte in order to provide an electrolytic solution for driving an Al electrolytic capacitor. The salt dissolution is improved, and the gamma-butyrolactone improves the temperature characteristic, and the electrolyte having high spark voltage and low specific resistance can be obtained.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980042159A KR20000025184A (en) | 1998-10-09 | 1998-10-09 | Electrolyte for driving an al electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980042159A KR20000025184A (en) | 1998-10-09 | 1998-10-09 | Electrolyte for driving an al electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20000025184A true KR20000025184A (en) | 2000-05-06 |
Family
ID=19553430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980042159A KR20000025184A (en) | 1998-10-09 | 1998-10-09 | Electrolyte for driving an al electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20000025184A (en) |
-
1998
- 1998-10-09 KR KR1019980042159A patent/KR20000025184A/en not_active Application Discontinuation
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR910003216B1 (en) | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor prepared by using it | |
| JPS61239617A (en) | Solid electrolytic capacitor | |
| KR20000025184A (en) | Electrolyte for driving an al electrolytic capacitor | |
| KR100448584B1 (en) | An electrolyte for high voltage Al capacitor | |
| KR20000025185A (en) | Electrolyte for driving an al electrolytic capacitor | |
| KR0169779B1 (en) | An electrolyte for al electrolytic condenser | |
| JPH03291909A (en) | Solid-state electrolytic capacitor | |
| KR20000025183A (en) | Eletrolyte for driving al electrolytic capacitor | |
| KR0169778B1 (en) | An electrolyte for al electrolytic condenser | |
| JP2572021B2 (en) | Electrolyte for electrolytic capacitors | |
| KR0169781B1 (en) | An electroyte for al electrolytic condenser | |
| CN1009141B (en) | Electrolyte for electrolytic capacitor | |
| KR20020081746A (en) | Electrolyte of a aluminum condenser | |
| JPS63175412A (en) | Electrolyte for electrolytic capacitor | |
| JP2701876B2 (en) | Electrolyte for electrolytic capacitors | |
| JPH0342693B2 (en) | ||
| KR20030028099A (en) | Electrolyte of a aluminum condenser | |
| JPH0254511A (en) | Electrolyte solution for electrolytic capacitor | |
| KR20030028098A (en) | Electrolyte of a aluminum condenser | |
| JP3979104B2 (en) | Electrolytic solution for electrolytic capacitor driving and electrolytic capacitor using the same | |
| KR20030028097A (en) | Electrolyte of a aluminum condenser | |
| JPH0351285B2 (en) | ||
| KR20030034977A (en) | Electrolyte for aluminium electrolysis condenser of low voltage and electrolysis condenser having the same | |
| JPH0412512A (en) | Driving electrolyte of aluminum electrolytic capacitor | |
| JPH0381291B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |