JP2812689B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP2812689B2 JP2812689B2 JP63266953A JP26695388A JP2812689B2 JP 2812689 B2 JP2812689 B2 JP 2812689B2 JP 63266953 A JP63266953 A JP 63266953A JP 26695388 A JP26695388 A JP 26695388A JP 2812689 B2 JP2812689 B2 JP 2812689B2
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- electrolytic solution
- salt
- electrolytic capacitors
- solution
- 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
- Secondary Cells (AREA)
Description
【発明の詳細な説明】 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。Description: TECHNICAL FIELD The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as an electrolytic solution).
従来の技術 従来、電解コンデンサ用電解液としてはエチレングリ
コールを主体とした溶媒に、低比抵抗化を目的にアジピ
ン酸などの有機酸あるいはその塩を多量に溶解した電解
液が用いられており、さらに電解液の比抵抗を低減する
ため多量の水を添加したものが用いられている。Conventional technology Conventionally, as an electrolytic solution for an electrolytic capacitor, an electrolytic solution in which a large amount of an organic acid such as adipic acid or a salt thereof is dissolved in a solvent mainly composed of ethylene glycol for the purpose of lowering the specific resistance has been used. Further, a material to which a large amount of water is added to reduce the specific resistance of the electrolyte is used.
発明が解決しようとする問題点 近年、アルミニウム電解コンデンサの低インピーダン
ス化、小型化、高信頼化に伴い、電解液としては比抵抗
が低く、広温度で安定な電解液が要求されている。エチ
レングリコールを主体とした溶媒に、硼酸および有機酸
あるいはその塩を溶解した電解液においては、比抵抗を
低くするために従来電解液中の水分の配合比を増大した
ものがあるが、水の配合比を増大すると高温度雰囲気下
における信頼性が著しく低下し、また溶解する有機酸量
を増加すると低温特性を悪化させるなどの問題を有して
いた。Problems to be Solved by the Invention In recent years, as the impedance of aluminum electrolytic capacitors has become lower, smaller, and more reliable, an electrolytic solution having low specific resistance and stable at a wide temperature has been required. In an electrolytic solution in which boric acid and an organic acid or a salt thereof are dissolved in a solvent mainly composed of ethylene glycol, there is a conventional electrolytic solution in which the mixing ratio of water in the electrolytic solution is increased to reduce the specific resistance. If the compounding ratio is increased, the reliability in a high temperature atmosphere is significantly reduced, and if the amount of the dissolved organic acid is increased, the low temperature characteristics are deteriorated.
また、溶解する有機酸として安息香酸を用いると、高
温度雰囲気下における信頼性が著しく向上することが知
られているが、安息香酸の溶解は火花電圧の低下が著し
いため、多量の添加が不可能であった。It is also known that the use of benzoic acid as a dissolving organic acid significantly improves the reliability under a high-temperature atmosphere. It was possible.
問題点を解決するための手段 本発明は、上述の問題点を解決するため、エチレング
リコールを主溶媒とし、硼酸および有機酸あるいはその
塩を溶解してなる溶液に、無水トリメリット酸あるいは
その塩を溶解したことを特徴とする電解液である。Means for Solving the Problems In order to solve the above problems, the present invention uses ethylene glycol as a main solvent and dissolves boric acid and an organic acid or a salt thereof in a solution obtained by dissolving trimellitic anhydride or a salt thereof. Is an electrolytic solution characterized by the following.
また、上記無水トリメリット酸は混合溶媒100gに対
し、0.1g以上添加することが望ましい。Further, it is desirable to add 0.1 g or more of the trimellitic anhydride to 100 g of the mixed solvent.
作用 本発明に係る電解液は、電解液の低比抵抗化に伴う多
量の溶質添加においても耐電圧の低下を抑制し、また、
熱的に非常に安定なため、高温度雰囲気下における比抵
抗上昇を著しく抑制することにより、製品の寿命特性を
著しく向上させる。Action The electrolytic solution according to the present invention suppresses a decrease in withstand voltage even when a large amount of solute is added due to low specific resistance of the electrolytic solution,
Since it is very thermally stable, the life characteristics of the product are remarkably improved by suppressing a rise in specific resistance under a high temperature atmosphere.
実施例 以下、本発明の実施例について説明する。Examples Hereinafter, examples of the present invention will be described.
第１表は本発明と従来の電解コンデンサに用いた電解
液の組成、比抵抗についての比較例を示す。第１表中電
解液試料記号Ａ、Ｂ、Ｃ、Ｄ、Ｅは従来例、Ｆ、Ｇ、Ｈ
は本発明例である。Table 1 shows a comparative example of the composition and specific resistance of the electrolytic solution used in the present invention and the conventional electrolytic capacitor. The electrolyte sample symbols A, B, C, D and E in Table 1 are conventional examples, F, G and H
Is an example of the present invention.
第１表から明らかなように、本発明に係る電解液（試
料記号Ｆ、Ｇ、Ｈ）は、多量の無水トリメリット酸を溶
質として使用しても耐電圧の低下が見られない。 As is clear from Table 1, the electrolyte solution (sample symbols F, G, H) according to the present invention does not show a decrease in withstand voltage even when a large amount of trimellitic anhydride is used as a solute.
第２表は、第１表に示す電解液を用いて試作した定格
250WV300μＦのアルミニウム電解コンデンサの105℃200
0時間高温負荷試験を行った結果を示す。Table 2 shows the ratings made using the electrolyte shown in Table 1.
105 ℃ 200 of 250WV300μF aluminum electrolytic capacitor
The result of performing a 0-hour high-temperature load test is shown.
第２表から明らかなように、本発明に係る電解液（試
料記号Ｆ、Ｇ、Ｈ）は、従来の電解液に比較して著しい
信頼性の向上がなされている。 As is evident from Table 2, the electrolyte solution (sample symbols F, G, H) according to the present invention has remarkably improved reliability as compared with the conventional electrolyte solution.
発明の効果 以上の結果から明らかなように、エチレングリコール
を主溶媒とし、硼酸および有機酸あるいはその塩を溶解
してなる電解液に、無水トリメリット酸あるいはその塩
を溶解したことを特徴とするアルミニウム電解コンデン
サの駆動用電解液は、高い耐電圧を有し、信頼性が高
く、広温度範囲で優れた特性を示し、工業的ならびに実
用的価値の大なるものである。EFFECT OF THE INVENTION As is clear from the above results, trimellitic anhydride or a salt thereof is dissolved in an electrolytic solution containing ethylene glycol as a main solvent and boric acid and an organic acid or a salt thereof dissolved. The electrolytic solution for driving an aluminum electrolytic capacitor has a high withstand voltage, is highly reliable, exhibits excellent characteristics in a wide temperature range, and has great industrial and practical value.
Claims (1)
あるいはその塩を溶解してなる溶液に、無水トリメリッ
ト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。1. An electrolytic solution for driving an electrolytic capacitor, characterized in that trimellitic anhydride or a salt thereof is dissolved in a solution of ethylene glycol as a main solvent and an organic acid or a salt thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63266953A JP2812689B2 (en) | 1988-10-21 | 1988-10-21 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63266953A JP2812689B2 (en) | 1988-10-21 | 1988-10-21 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02113515A JPH02113515A (en) | 1990-04-25 |
| JP2812689B2 true JP2812689B2 (en) | 1998-10-22 |
Family
ID=17437985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63266953A Expired - Fee Related JP2812689B2 (en) | 1988-10-21 | 1988-10-21 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2812689B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100499774B1 (en) * | 2002-08-16 | 2005-07-07 | 현대모비스 주식회사 | Engine mounting system with dynamic damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01289237A (en) * | 1988-05-17 | 1989-11-21 | Sanyo Electric Co Ltd | Electrolyte for electrolytic capacitor |
-
1988
- 1988-10-21 JP JP63266953A patent/JP2812689B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02113515A (en) | 1990-04-25 |
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