JP3122207B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP3122207B2 JP3122207B2 JP03352129A JP35212991A JP3122207B2 JP 3122207 B2 JP3122207 B2 JP 3122207B2 JP 03352129 A JP03352129 A JP 03352129A JP 35212991 A JP35212991 A JP 35212991A JP 3122207 B2 JP3122207 B2 JP 3122207B2
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- electrolytic solution
- solution
- electrolytic capacitors
- electrolytic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電解コンデンサの駆動
用電解液（以下電解液という）に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as an electrolytic solution).
【０００２】[0002]
【従来の技術】従来より電解コンデンサの電解液にはエ
チレングリコ−ルおよび水を主体とした溶液に、有機酸
あるいはその塩を溶解した電解液が多用されていたが、
従来のエチレングリコ−ルおよび水を主体とした電解液
を使用した電解コンデンサは高温度雰囲気中での信頼性
が低いため、広温度範囲において使用可能な電解液の溶
媒としてγ−ブチロラクトンが使用されるようになっ
た。2. Description of the Related Art Conventionally, an electrolytic solution of an electrolytic capacitor in which an organic acid or a salt thereof is dissolved in a solution mainly composed of ethylene glycol and water has been frequently used.
Conventional electrolytic capacitors using an electrolyte mainly composed of ethylene glycol and water have low reliability in a high-temperature atmosphere, and therefore γ-butyrolactone is used as a solvent for the electrolyte that can be used in a wide temperature range. It became so.
【０００３】[0003]
【発明が解決しようとする課題】しかし、γ−ブチロラ
クトンは高温雰囲気中における蒸気圧が高いため、面実
装品へ使用した場合、半田リフロ−炉中の熱（約260
℃）によって電解液が気化してしまい、外観膨張を発生
してしまうという問題を有していた。However, since γ-butyrolactone has a high vapor pressure in a high-temperature atmosphere, when it is used for a surface mount product, heat (about 260 ° C.) in a solder reflow furnace is required.
C.), the electrolyte is vaporized, which causes a problem of expanding the appearance.
【０００４】[0004]
【課題を解決するための手段】これらの問題を解決する
には、使用する溶媒を高沸点かつ低凝固点のものにすれ
ば良い。すなわち、２，２，４−トリメチル−１，３−
ペンタンジオ−ルモノイソブチレ−トを主体とした溶液
中へ有機酸あるいはその塩を溶解したことを特徴とする
電解液である。In order to solve these problems, the solvent used should have a high boiling point and a low freezing point. That is, 2,2,4-trimethyl-1,3-
An electrolytic solution comprising an organic acid or a salt thereof dissolved in a solution mainly composed of pentanediole monoisobutylate.
【０００５】[0005]
【作用】本発明の電解液に使用した２，２，４−トリメ
チル−１，３−ペンタンジオ−ルモノイソブチレ−ト
は、高沸点・低凝固点であるため、電解液の気化による
外観異常が発生せず、また、低温においても電解液の凝
固が起こりにくいため、低温特性が向上する。The 2,2,4-trimethyl-1,3-pentanediole monoisobutyrate used in the electrolyte of the present invention has a high boiling point and a low freezing point, so that no abnormal appearance occurs due to vaporization of the electrolyte. In addition, the solidification of the electrolytic solution hardly occurs even at a low temperature, so that the low-temperature characteristics are improved.
【０００６】[0006]
【実施例】以下、本発明の実施例について説明する。表
１は、各種溶媒の沸点および凝固点を示す。表２は、表
中に示した本発明の電解液と従来の電解液を用いて試作
した、定格10WV 330μF の面実装品を実装した基板を半
田リフロ−炉に通した後の外観膨張発生率を示した。表
３は、表１中に示した本発明の電解液と従来の電解液を
用いて試作した、定格 10V 330μF の面実装品による、
105℃高温負荷試験結果を示す。なお、表中電解液試料
記号Ａは従来例Ｂ，Ｃは本発明例であり、また、エチレ
ングリコ−ルはＥＧ、γ−ブチロラクトンはＧＢＬ、
Ｎ，Ｎ−ジメチルホルムアミドはＤＭＦ、２，２，４−
トリメチル−１，３−ペンタンジオールモノイソブチレ
−トはＰＤＯと略した。Embodiments of the present invention will be described below. Table 1 shows the boiling points and freezing points of the various solvents. Table 2 shows the rate of appearance expansion after passing through a solder reflow furnace a board mounted with a 10WV 330μF rated surface mount product that was prototyped using the electrolyte of the present invention and the conventional electrolyte shown in the table. showed that. Table 3 shows the results of trial production using the electrolytic solution of the present invention and the conventional electrolytic solution shown in Table 1 and a surface mount product rated at 10 V and 330 μF.
The results of the 105 ° C high temperature load test are shown. In the table, electrolyte sample symbol A is a conventional example B and C is an example of the present invention, ethylene glycol is EG, γ-butyrolactone is GBL,
N, N-dimethylformamide is DMF, 2,2,4-
Trimethyl-1,3-pentanediol monoisobutyrate was abbreviated as PDO.
【０００７】[0007]
【表１】 [Table 1]
【０００８】[0008]
【表２】 [Table 2]
【０００９】[0009]
【表３】 [Table 3]
【００１０】表から明らかなように、本発明に係る試料
記号Ｂ，Ｃの電解液は従来の電解液に比べ、高温雰囲気
中での電解液の気化による外観膨張が見られず、また、
信頼性の低下も見られない。なお、２，２，４−トリメ
チル−１，３−ペンタンジオ−ルモノイソブチレ−トの
配合量が5重量％未満の場合は改良の効果がみられず、
また、電解液の低比抵抗化のためには最低10重量％以上
の溶質を必要とするため、最大配合量は90重量％であ
る。As is clear from the table, the electrolytes of sample symbols B and C according to the present invention do not show any external expansion due to the vaporization of the electrolyte in a high-temperature atmosphere as compared with the conventional electrolytes.
There is no decrease in reliability. When the amount of 2,2,4-trimethyl-1,3-pentanediole monoisobutyrate is less than 5% by weight, no improvement effect is obtained.
In addition, since a solute of at least 10% by weight is required for lowering the specific resistance of the electrolyte, the maximum blending amount is 90% by weight.
【００１１】[0011]
【発明の効果】以上のように、２，２，４−トリメチル
−１，３−ペンタンジオ−ルモノイソブチレ−トの溶液
中へ、有機酸あるいはその塩を溶解した事を特徴とする
電解液は、高沸点・低凝固点であるため、この電解液を
用いた電解コンデンサは、低温での特性が良好であり、
また、半田リフロ−炉などでの高温雰囲気中においても
外観膨張が発生しないため、工業的ならびに実用的価値
の大なるものである。As described above, an electrolytic solution characterized by dissolving an organic acid or a salt thereof in a solution of 2,2,4-trimethyl-1,3-pentanediole monoisobutyrate is high. Because of its boiling point and low freezing point, electrolytic capacitors using this electrolyte have good characteristics at low temperatures,
Further, since the appearance does not expand even in a high-temperature atmosphere in a solder reflow furnace or the like, it is of great industrial and practical value.
Claims (2)
タンジオ−ルモノイソブチレ−トを主体とした溶液中
へ、有機酸あるいはその塩を溶解したことを特徴とする
電解コンデンサの駆動用電解液。An electrolytic solution for driving an electrolytic capacitor, characterized in that an organic acid or a salt thereof is dissolved in a solution mainly composed of 2,2,4-trimethyl-1,3-pentanediole monoisobutyrate. .
ペンタンジオ−ルモノイソブチレ−トは、混合溶液中に
5重量％〜90重量％存在することを特徴とする請求項1の
電解コンデンサの駆動用電解液。2. The above 2,2,4-trimethyl-1,3-
Pentandiole monoisobutyrate is contained in the mixed solution.
2. The electrolytic solution for driving an electrolytic capacitor according to claim 1, wherein the electrolytic solution is present in an amount of 5% by weight to 90% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03352129A JP3122207B2 (en) | 1991-12-13 | 1991-12-13 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03352129A JP3122207B2 (en) | 1991-12-13 | 1991-12-13 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05166680A JPH05166680A (en) | 1993-07-02 |
| JP3122207B2 true JP3122207B2 (en) | 2001-01-09 |
Family
ID=18421974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03352129A Expired - Fee Related JP3122207B2 (en) | 1991-12-13 | 1991-12-13 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3122207B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659137A (en) * | 2018-12-17 | 2019-04-19 | 湖南艾华集团股份有限公司 | A kind of low-temperature electrolytes and preparation method thereof |
-
1991
- 1991-12-13 JP JP03352129A patent/JP3122207B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05166680A (en) | 1993-07-02 |
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