JP3494464B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP3494464B2 JP3494464B2 JP03587694A JP3587694A JP3494464B2 JP 3494464 B2 JP3494464 B2 JP 3494464B2 JP 03587694 A JP03587694 A JP 03587694A JP 3587694 A JP3587694 A JP 3587694A JP 3494464 B2 JP3494464 B2 JP 3494464B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- electrolytic solution
- weight
- electrolytic
- salt
- 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
【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 electrolytic solution).
【０００２】[0002]
【従来の技術】従来より高圧用アルミニウム電解コンデ
ンサの電解液にはエチレングリコ−ルを主体とした溶液
にほう酸を溶解した電解液が多用されている。2. Description of the Related Art Conventionally, an electrolytic solution in which boric acid is dissolved in a solution mainly containing ethylene glycol is often used as an electrolytic solution for a high-voltage aluminum electrolytic capacitor.
【０００３】[0003]
【発明が解決しようとする課題】アルミニウム電解コン
デンサの高温度での使用においては、従来のエチレング
リコールを主体とした溶液にほう酸を溶解した電解液で
は、エステル化水の発生により、信頼性を十分確保でき
なかった。また炭素数の多い高級二塩基酸の使用も検討
されたが溶解度が低く実用には至っていない。さらに、
側鎖にアルキル基を有する高級二塩基酸の使用が、検討
されているが、高級二塩基酸は電解液中に水分が存在し
ている条件では、アルミニウムとの錯体形成能力が強い
ため、水分を含まない電解液として使用するか、電解液
に配合する高級二塩基酸の配合量を低く抑える必要があ
った。しかし、電解液中の水分を含まない条件での電解
コンデンサの製造は事実上、不可能であり、また電解液
に配合する高級二塩基酸の配合量を低く抑えることは結
果的には比抵抗の高い電解液しか得ることができないこ
とになる。またアルミニウムとの錯体形成は電解コンデ
ンサにおいては静電容量の著しい減少、損失の著しい増
加をもたらすため根本的な対策を必要としていた。When an aluminum electrolytic capacitor is used at high temperatures, the conventional electrolytic solution containing boric acid dissolved in a solution mainly composed of ethylene glycol has sufficient reliability due to the generation of esterified water. I couldn't secure it. Further, the use of higher dibasic acid having a large number of carbon atoms was also examined, but its solubility is low and it has not been put to practical use. further,
The use of a higher dibasic acid having an alkyl group on the side chain has been investigated, but since the higher dibasic acid has a strong ability to form a complex with aluminum under the condition that water is present in the electrolyte, It was necessary to use it as an electrolyte solution containing no or to keep the amount of higher dibasic acid compounded in the electrolyte solution low. However, it is virtually impossible to manufacture electrolytic capacitors under conditions that do not contain water in the electrolytic solution, and it is ultimately difficult to keep the amount of higher dibasic acid compounded in the electrolytic solution low. This means that only high electrolyte solution can be obtained. Further, complex formation with aluminum causes a drastic decrease in capacitance and a significant increase in loss in an electrolytic capacitor, and thus requires a fundamental measure.
【０００４】[0004]
【課題を解決するための手段】本発明は上記の問題を解
決するためエチレングリコ−ルを主体とした溶液に炭素
数１２〜２２で側鎖にアルキル基を有する高級二塩基酸
またはその塩の中より１種以上を溶解し、ヘキソン酸の
ほう酸エステルまたはその塩を０．１重量％〜１０．０
重量％添加したことを特徴とする電解コンデンサの電解
液である。また上記ヒキソン酸は、グルコン酸またはマ
ンノン酸またはガラクトン酸であることを特徴としてい
る。In order to solve the above problems, the present invention provides a solution of ethylene glycol as a main component of a higher dibasic acid having 12 to 22 carbon atoms and an alkyl group in the side chain, or a salt thereof. 0.1% by weight to 10.0% by weight of boric acid ester of hexonic acid or a salt thereof is dissolved.
It is an electrolytic solution of an electrolytic capacitor, which is characterized by being added by weight%. The above-mentioned hyxonic acid is characterized in that it is gluconic acid, mannonic acid or galactonic acid.
【０００５】[0005]
【作用】本発明の電解液は、配合したグルコン酸、マン
ノン酸、ガラクトン酸等のヘキソン酸のほう酸エステル
またはその塩により高級二塩基酸とアルミニウムの錯体
形成を完全に防止する作用を有し、電解コンデンサの静
電容量の著しい減少、損失の著しい増加を防止でき、高
級二塩基酸の優れた特性を損なうことなく、使用温度範
囲の広い電解液が得られる。The electrolytic solution of the present invention has a function of completely preventing the formation of a complex of a higher dibasic acid and aluminum by the compounded gluconic acid, mannonic acid, boric acid ester of hexonic acid such as galactonic acid or a salt thereof, It is possible to prevent a significant decrease in capacitance of the electrolytic capacitor and a significant increase in loss, and to obtain an electrolytic solution with a wide operating temperature range without impairing the excellent characteristics of the higher dibasic acid.
【０００６】[0006]
【実施例】以下、本発明の具体的実施例について説明す
る。表１は、エチレングリコールに１０重量％の１，６
−デカンジカルボン酸アンモニウムを配合した電解液総
重量に対し、グルコン酸、マンノン酸、ガラクトン酸等
のヘキソン酸のほう酸エステルまたはその塩を添加した
本発明にかかる電解液と従来の電解液を用いたアルミニ
ウム電解コンデンサ（定格４００Ｖ、２２０μＦ）を１
１５℃中で、定格電圧を２０００時間印加した高温負荷
試験結果を示すものである。各数値は試料数１０個の平
均値である。EXAMPLES Specific examples of the present invention will be described below. Table 1 shows 10% by weight of ethylene glycol in 1,6
Using the conventional electrolytic solution and the electrolytic solution according to the present invention to which the boric acid ester of hexonic acid such as gluconic acid, mannonic acid, galactonic acid or the salt thereof is added, based on the total weight of the electrolytic solution containing ammonium decanedicarboxylate. 1 aluminum electrolytic capacitor (rated 400V, 220μF)
The results of a high temperature load test in which a rated voltage is applied for 2000 hours at 15 ° C. are shown. Each numerical value is an average value of 10 samples.
【０００７】[0007]
【表１】 [Table 1]
【０００８】ヘキソン酸のほう酸エステルまたはその塩
を配合していない電解液を使用した電解コンデンサ（試
料群記号Ａ）と比較して、本発明の電解液を使用した電
解コンデンサ（試料群記号Ｂ，Ｃ，Ｄ，Ｅ，Ｆ）は静電
容量、損失いずれも安定な特性を示している。また、各
種高級二塩基酸においてヘキソン酸のほう酸エステルま
たはその塩について各種配合比において評価したが、い
ずれの組成においても同様な効果がみられた。しかし、
ヘキソン酸の添加量は０．１重量％未満ではその効果の
安定性が乏しく、０．１重量％以上の配合が必要であ
る。また１０．０重量％を超えるとヘキソン酸のほう酸
エステルの溶解性が著しく悪くなり望ましくない。Compared with an electrolytic capacitor (sample group symbol A) using an electrolytic solution containing no boric acid ester of hexonic acid or a salt thereof, an electrolytic capacitor using the electrolytic solution of the present invention (sample group symbol B, C, D, E, F) show stable characteristics in both capacitance and loss. Further, boric acid ester of hexonic acid or its salt was evaluated at various compounding ratios in various higher dibasic acids, and the same effect was observed in any composition. But,
If the amount of hexonic acid added is less than 0.1% by weight, the stability of the effect is poor and it is necessary to add 0.1% by weight or more. If it exceeds 10.0% by weight, the solubility of boric acid ester of hexonic acid is remarkably deteriorated, which is not desirable.
【０００９】[0009]
【発明の効果】以上のように、本発明のエチレングリコ
ールを主体とした溶液に炭素数１２〜２２で側鎖にアル
キル基を有する高級二塩基酸またはその塩のなかより１
種以上を溶解し、グルコン酸、マンノン酸、ガラクトン
酸からなるヘキソン酸のほう酸エステルを０．１重量％
〜１０．０重量％添加したことを特徴とする電解液の使
用は高温度において安定な高圧用電解コンデンサが得ら
れ、工業的ならびに実用的価値の大なるものである。INDUSTRIAL APPLICABILITY As described above, in the solution of the present invention containing ethylene glycol as a main component, a higher dibasic acid having 12 to 22 carbon atoms and an alkyl group in the side chain or a salt thereof
0.1% by weight of boric acid ester of hexonic acid consisting of gluconic acid, mannonic acid and galactonic acid
The use of the electrolytic solution characterized by being added by up to 10.0% by weight gives a stable high-voltage electrolytic capacitor at high temperature, which is of great industrial and practical value.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平６−5470（ＪＰ，Ａ) 特開 平４−26107（ＪＰ，Ａ) 特開 平３−225906（ＪＰ，Ａ) 特開 昭63−306612（ＪＰ，Ａ) 特開 昭62−272514（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01G 9/035 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-6-5470 (JP, A) JP-A-4-26107 (JP, A) JP-A-3-225906 (JP, A) JP-A-63- 306612 (JP, A) JP 62-272514 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) H01G 9/035
Claims (2)
炭素数１２〜２２で、側鎖にアルキル基を有する高級二
塩基酸またはその塩の中より１種以上を溶解し、ヘキソ
ン酸のほう酸エステルまたはその塩を０．１重量％〜１
０．０重量％添加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. Boric acid of hexonic acid is prepared by dissolving at least one of higher dibasic acids having 12 to 22 carbon atoms and an alkyl group in the side chain or a salt thereof in a solution mainly composed of ethylene glycol. 0.1% by weight of ester or salt thereof to 1
An electrolytic solution for driving an electrolytic capacitor, which is characterized by adding 0.0% by weight.
マンノン酸、またはガラクトン酸であることを特徴とす
る電解コンデンサの駆動用電解液。2. The electrolytic solution for driving an electrolytic capacitor, wherein the hexonic acid is gluconic acid, mannonic acid, or galactonic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03587694A JP3494464B2 (en) | 1994-03-07 | 1994-03-07 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03587694A JP3494464B2 (en) | 1994-03-07 | 1994-03-07 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07245247A JPH07245247A (en) | 1995-09-19 |
| JP3494464B2 true JP3494464B2 (en) | 2004-02-09 |
Family
ID=12454209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03587694A Expired - Fee Related JP3494464B2 (en) | 1994-03-07 | 1994-03-07 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3494464B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3551035B2 (en) | 1998-08-31 | 2004-08-04 | 松下電器産業株式会社 | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor using the same |
-
1994
- 1994-03-07 JP JP03587694A patent/JP3494464B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07245247A (en) | 1995-09-19 |
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