JP2567445B2 - Electrolytic solution for driving electrolytic capacitors - Google Patents
Electrolytic solution for driving electrolytic capacitorsInfo
- Publication number
- JP2567445B2 JP2567445B2 JP63057211A JP5721188A JP2567445B2 JP 2567445 B2 JP2567445 B2 JP 2567445B2 JP 63057211 A JP63057211 A JP 63057211A JP 5721188 A JP5721188 A JP 5721188A JP 2567445 B2 JP2567445 B2 JP 2567445B2
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic
- electrolytic solution
- driving
- salt
- capacitors
- 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)
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）に係り、特にエチレングリコールを主体とした
溶媒に高級多塩基酸あるいはその塩と、硼酸あるいはそ
の塩とを主たる溶質とした電解液の改良に関するもので
ある。TECHNICAL FIELD The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as an electrolytic solution), and particularly to a solvent mainly composed of ethylene glycol, a higher polybasic acid or a salt thereof, and boric acid. Alternatively, it relates to improvement of an electrolytic solution containing a salt thereof as a main solute.
従来の技術 従来の中高圧用アルミニウム電解コンデンサには、エ
チレングリコールを主体とした溶媒に炭素数12〜22の高
級多塩基酸あるいはその塩と、硼酸あるいはその塩とを
含んだ電解液をコンデンサ素子に含浸し、密閉し構成さ
れていた。2. Description of the Related Art A conventional medium- and high-voltage aluminum electrolytic capacitor has a capacitor element including an electrolytic solution containing a higher polybasic acid having 12 to 22 carbon atoms or a salt thereof and boric acid or a salt thereof in a solvent mainly composed of ethylene glycol. It was impregnated into and sealed.
発明が解決しようとする問題点 しかし上述のような電解液を用いた電解コンデンサ
は、電解液の酸化皮膜形成能力が良好でないため、漏れ
電流が大きくなる欠点があった。Problems to be Solved by the Invention However, the electrolytic capacitor using the electrolytic solution as described above has a drawback that leakage current becomes large because the oxide film forming ability of the electrolytic solution is not good.
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消するため、エチレングリ
ールを主体とした溶媒に炭素数12〜22の高級多塩基酸あ
るいはその塩と、硼酸あるいはその塩とを含有する電解
液に２−エチル−１、３−ヘキサンジオールを添加して
溶解したことを特徴とする電解コンデンサの電解液であ
る。Means for Solving the Problems The present invention solves the above problems by adding a higher polybasic acid having 12 to 22 carbon atoms or a salt thereof and a boric acid or a salt thereof to a solvent mainly composed of ethylene glycol. An electrolytic solution for an electrolytic capacitor, wherein 2-ethyl-1,3-hexanediol is added to and dissolved in the contained electrolytic solution.
作用 ２−エチル−１、３−ヘキサンジオールを電解液に溶
解することにより、アルミニウム電極箔の酸化形成能力
を高め、広い温度範囲でコンデンサを使用できる作用を
有する。Action By dissolving 2-ethyl-1,3-hexanediol in the electrolytic solution, the ability of the aluminum electrode foil to form oxidation is enhanced, and the capacitor can be used in a wide temperature range.
実施例 以下、本発明の具体的実施例について説明する。EXAMPLES Hereinafter, specific examples of the present invention will be described.
第１表に本発明の実施例に用いた電解液の組成、比抵
抗および火花発生電圧について従来品との比較を示し
た。Table 1 shows a comparison of the composition, specific resistance and spark generation voltage of the electrolytic solution used in the examples of the present invention with the conventional product.
第２表に第１表の従来例の試料No.1、２の電解液と本
発明の実施例の試料No.3、４の電解液を用いて製作した
定格400WV、220μＦのアルミニウム電解コンデンサを周
囲温度105℃で500時間高温無負荷放置試験した結果を示
す。 Table 2 shows aluminum electrolytic capacitors with a rating of 400 WV and 220 μF manufactured by using the electrolytic solutions of Sample Nos. 1 and 2 of the conventional example of Table 1 and the electrolytic solutions of Samples Nos. 3 and 4 of the examples of the present invention. The results of a high temperature no-load storage test at an ambient temperature of 105 ° C for 500 hours are shown.
第２表中の値は何れも試料数20個の平均値を示す。 The values in Table 2 are all average values of 20 samples.
本発明の実施例の電解液を使用したものは、全て高温
無負荷放置試験における容量変化率、tanδ、漏れ電
流、外観の全てに問題なく、改良効果が実証された。All of the electrolytic solutions using the electrolytic solution of the present invention were proved to have an improvement effect without any problems in the rate of change in capacity, tan δ, leakage current, and appearance in a high temperature unloaded test.
発明の効果 以上のように本発明の電解コンデンサの電解液は高温
で長時間放置しても漏れ電流値が極めて小さく、かつ信
頼性の高いアルミニウム電解コンデンサが得られる効果
がある。 EFFECTS OF THE INVENTION As described above, the electrolytic solution of the electrolytic capacitor of the present invention has an effect of obtaining a highly reliable aluminum electrolytic capacitor having a very small leakage current value even when left at high temperature for a long time.
Claims (1)
素数12〜22の高級多塩基酸あるいはその塩と、硼酸ある
いはその塩とを含有する電解液に２−エチル−１、３−
ヘキサンジオールを添加して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 containing a higher polybasic acid having 12 to 22 carbon atoms or a salt thereof and boric acid or a salt thereof in a solvent containing ethylene glycol as a main component, and 2-ethyl-1,3-
An electrolytic solution for driving an electrolytic capacitor, wherein hexanediol is added and dissolved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63057211A JP2567445B2 (en) | 1988-03-10 | 1988-03-10 | Electrolytic solution for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63057211A JP2567445B2 (en) | 1988-03-10 | 1988-03-10 | Electrolytic solution for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01230217A JPH01230217A (en) | 1989-09-13 |
| JP2567445B2 true JP2567445B2 (en) | 1996-12-25 |
Family
ID=13049183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63057211A Expired - Fee Related JP2567445B2 (en) | 1988-03-10 | 1988-03-10 | Electrolytic solution for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567445B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017228738A (en) * | 2016-06-24 | 2017-12-28 | ニチコン株式会社 | Electrolytic solution and electrolytic capacitor |
-
1988
- 1988-03-10 JP JP63057211A patent/JP2567445B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01230217A (en) | 1989-09-13 |
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