JPH0722084B2 - Electrolytic solution for driving electrolytic capacitors - Google Patents
Electrolytic solution for driving electrolytic capacitorsInfo
- Publication number
- JPH0722084B2 JPH0722084B2 JP7500287A JP7500287A JPH0722084B2 JP H0722084 B2 JPH0722084 B2 JP H0722084B2 JP 7500287 A JP7500287 A JP 7500287A JP 7500287 A JP7500287 A JP 7500287A JP H0722084 B2 JPH0722084 B2 JP H0722084B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- electrolytic
- salt
- driving
- electrolytic 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 - Lifetime
Links
- 239000008151 electrolyte solution Substances 0.000 title claims description 15
- 239000003990 capacitor Substances 0.000 title claims description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 24
- 150000003839 salts Chemical class 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 8
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 3
- 229940114055 beta-resorcylic acid Drugs 0.000 claims description 2
- 229930188620 butyrolactone Natural products 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- CHCFOMQHQIQBLZ-UHFFFAOYSA-N azane;phthalic acid Chemical compound N.N.OC(=O)C1=CC=CC=C1C(O)=O CHCFOMQHQIQBLZ-UHFFFAOYSA-N 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- VRUJCFSQHOLHRM-UHFFFAOYSA-L phthalate;tetramethylazanium Chemical compound C[N+](C)(C)C.C[N+](C)(C)C.[O-]C(=O)C1=CC=CC=C1C([O-])=O VRUJCFSQHOLHRM-UHFFFAOYSA-L 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical class CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 1
- -1 γ-butyrolactone Chemical compound 0.000 description 1
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。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 従来のアルミニウム電解コンデンサの電解液はエチレン
グリコール、プロピレングリコールなどの多価アルコー
ル類あるいはさらに水を加えたものを溶媒として、ほう
酸、モノカルボン酸、ジカルボン酸、りん酸またはこれ
らの塩類を溶解した電解液が多用されている。2. Description of the Related Art Conventional electrolytic solutions for aluminum electrolytic capacitors use boric acid, monocarboxylic acid, dicarboxylic acid, phosphoric acid or salts thereof with polyhydric alcohols such as ethylene glycol and propylene glycol, or those to which water is added as a solvent. Dissolved electrolyte is often used.
発明が解決しようとする問題点 一般にアルミニウム電解コンデンサは陽極となる電極に
誘電体酸化皮膜を形成したものが用いられている。Problems to be Solved by the Invention Generally, an aluminum electrolytic capacitor is used in which a dielectric oxide film is formed on an electrode serving as an anode.
この皮膜は性質上、微妙な漏れ電流は避けられないが、
さらにこれとは別に陽極電極の引出し用アルミニウムタ
ブとの接合部分の漏れ電流は、機械的ストレスを加えた
だけで著しく増大する。Due to the nature of this film, a subtle leakage current is unavoidable,
In addition to this, the leakage current at the joining portion of the anode electrode with the aluminum tab for drawing out significantly increases only by applying mechanical stress.
近年、電子部品の小形化に伴い、この陽極電極と引出し
用アルミニウムタブとの接合部分に対しては、プリント
基板にコンデンサのリード線端子を挿入するときにもス
トレスが加わり、またリード線端子を折り曲げ加工する
ときにストレスが加わり、漏れ電流が増大するといった
ことが問題となっている。この欠点を改善する方法とし
て、封口部へ樹脂を塗ることにより、リード線を固定す
る方法があるが、製造工程が増加してコスト上昇の原因
となる。With the recent miniaturization of electronic components, stress is applied to the joint between the anode electrode and the aluminum tab for extraction even when the lead wire terminal of the capacitor is inserted into the printed circuit board, and the lead wire terminal is There is a problem that stress is applied during bending and leakage current increases. As a method of remedying this drawback, there is a method of fixing the lead wire by applying a resin to the sealing portion.
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、エチレングリコールのモノエステル類、Ｎ、Ｎ−
ジメチルホルムアミド、γ−ブチロラクトンなどの有機
溶媒に、フタル酸または、これら無機、有機の塩類の一
種または二種以上を溶質として溶解した電解液におい
て、上記混合量に対して0.05〜5.0wt％のボロジレゾル
シル酸またはその塩を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。Means for Solving the Problems In order to solve the above problems, the present invention is directed to ethylene glycol, ethylene glycol monoesters, N, N-
In an organic solvent such as dimethylformamide and γ-butyrolactone, phthalic acid or one or more of these inorganic and organic salts is dissolved as a solute in an electrolyte solution, and 0.05 to 5.0 wt% of borodiresorcil is added to the mixed amount. An electrolytic solution for an electrolytic capacitor, which is characterized by adding an acid or a salt thereof.
作用 ボロジレゾルシル酸またはその塩は化成能力が高く、皮
膜欠陥をすばやく修復するという作用を有している。こ
のため、リード端子からのストレスをうけても皮膜欠陥
部がすぐに修復されるため、リード線加工前後の漏れ電
流の変化が少ない。Action Borodiresorcylic acid or its salt has a high chemical conversion ability, and has the action of quickly repairing film defects. For this reason, even if a stress is applied from the lead terminal, the film defect portion is immediately repaired, and the change in the leakage current before and after processing the lead wire is small.
実施例 次に本発明の具体的実施例について述べる。Example Next, a specific example of the present invention will be described.
表は、γ−ブチロラクトン70wt％、エチレングリコール
10wt％、フタル酸テトラメチルアンモニウム15wt％から
なる電解液（従来品）と、これにボロジレゾルシル酸の
添加量を変えて調合した電解液試料を製作し、この電解
液を用いて定格50WV 4.7μＦ（ケースサイズ直径4mm、
長さ7mm）のアルミニウム電解コンデンサを製作し、漏
れ電流抑制効果をリード線部の折り曲げ加工前および加
工後の漏れ電流値により評価した。表中の漏れ電流は常
温、定格電圧印加２分後の値で、いずれも試料数20個の
平均値を示す。The table shows γ-butyrolactone 70 wt%, ethylene glycol
An electrolyte solution (conventional product) consisting of 10 wt% and tetramethylammonium phthalate 15 wt% and an electrolyte solution sample prepared by changing the addition amount of borodiresorcylic acid to this solution were manufactured, and a rated power of 50 WV 4.7 μF ( Case size diameter 4mm,
An aluminum electrolytic capacitor with a length of 7 mm was manufactured, and the leakage current suppression effect was evaluated by the leakage current value before and after bending the lead wire. The leakage currents in the table are values at room temperature and 2 minutes after the rated voltage is applied, and all show the average value of 20 samples.
表中の添加剤Ｂ−γはボロジ−γ−レゾルシル酸、Ｂ−
βはボロジ−β−レゾルシル酸を示す。Additive B-γ in the table is borodi-γ-resorcylic acid, B-
β represents borodi-β-resorcylic acid.
上述の実施例から明らかなように、本発明のボロジレゾ
ルシル酸またはその塩を添加した電解液を用いた本発明
の試料群記号Ｃ、Ｄ、Ｅ、Ｇ、Ｈ、Ｉのアルミニウム電
解コンデンサは、漏れ電流の増加が著しく抑制されてい
る。 As is clear from the above-mentioned examples, the aluminum electrolytic capacitors of the sample group symbols C, D, E, G, H, and I of the present invention using the electrolytic solution to which the borodiresorcylic acid of the present invention or a salt thereof is added have no leakage. The increase in current is significantly suppressed.
なお、種々の実験の結果より、ボロジレゾルシル酸また
はその塩の添加量が0.05〜5.0wt％であれば、この効果
は有効且つ実用上十分である。ボロジレゾルシル酸また
はその塩は、駆動用電解液に対して5.0wt％を超える量
では、高温負荷試験において静電容量変化率、tanδ変
化率が大であり、また0.05wt％未満では、その効果は十
分ではない。From the results of various experiments, this effect is effective and practically sufficient if the addition amount of borodiresorcylic acid or its salt is 0.05 to 5.0 wt%. Borodiresorcylic acid or its salt has a large capacitance change rate and tan δ change rate in a high temperature load test when the amount exceeds 5.0 wt% with respect to the driving electrolyte solution, and when it is less than 0.05 wt%, its effect is low. Not enough.
また、上述の実施例の他エチレングリコール、エチレン
グリコールのモノエステル類、Ｎ、Ｎ−ジメチルホルム
アミド、γ−ブチロラクトンなどの有機溶媒または、さ
らに水を加えたものを溶媒とし、フタル酸アンモニウム
塩、トリエチルアンモニウム塩、テトラエチルアンモニ
ウム塩等、これらの無機、有機の塩類の一種または二種
以上を溶質として溶解した電解液についても、種々調合
比を変えてかつ、0.05〜5.0wt％の範囲内でボロジレゾ
ルシル酸を添加し、繰り返し実験したが同様な結果が得
られた。In addition to the above-mentioned examples, ethylene glycol, ethylene glycol monoesters, N, N-dimethylformamide, organic solvents such as γ-butyrolactone, or those to which water is added are used as a solvent, and ammonium phthalate salt, triethyl ester are used. Ammonium salts, tetraethylammonium salts, etc., such as electrolytic solutions in which one or more of these inorganic and organic salts are dissolved as solutes, various mixing ratios are varied, and borodiresorcylic acid is within the range of 0.05 to 5.0 wt%. Was repeated and repeated experiments were conducted with similar results.
発明の効果 以上のようにボロジレゾルシル酸またはその塩を加えた
本発明の駆動用電解液は、アルミニウム電解コンデンサ
においてリード線加工などのストレスを加えても漏れ電
流の極めて安定した特性を示し、工業的並びに実用的価
値の大なるものである。Effects of the Invention As described above, the driving electrolyte solution of the present invention to which borodiresorcylic acid or a salt thereof is added shows extremely stable characteristics of leakage current even when stress such as lead wire processing is applied to an aluminum electrolytic capacitor, It is also of great practical value.
Claims (2)
のモノエステル類、Ｎ、Ｎ−ジメチルホルムアミド、γ
−ブチロラクトンなどの有機溶媒に、フタル酸またはこ
れらの無機、有機の塩類の一種または二種以上を溶質と
して溶解した電解液に、0.05〜5.0wt％のボロジレゾル
シル酸またはその塩を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. Ethylene glycol, ethylene glycol monoesters, N, N-dimethylformamide, γ
-Characterized by adding 0.05 to 5.0 wt% of borodiresorcylic acid or its salt to an electrolytic solution prepared by dissolving phthalic acid or one or more of these inorganic and organic salts as a solute in an organic solvent such as butyrolactone. An electrolytic solution for driving an electrolytic capacitor.
が、ボロジ−γ−レゾルシル酸またはその塩もしくは、
ボロジ−β−レゾルシル酸またはその塩であることを特
徴とする特許請求の範囲第１項記載の電解コンデンサの
駆動用電解液。2. The borodiresorcylic acid or salt thereof is borodi-γ-resorcylic acid or salt thereof, or
The electrolytic solution for driving the electrolytic capacitor according to claim 1, which is borodi-β-resorcylic acid or a salt thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7500287A JPH0722084B2 (en) | 1987-03-27 | 1987-03-27 | Electrolytic solution for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7500287A JPH0722084B2 (en) | 1987-03-27 | 1987-03-27 | Electrolytic solution for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63240011A JPS63240011A (en) | 1988-10-05 |
| JPH0722084B2 true JPH0722084B2 (en) | 1995-03-08 |
Family
ID=13563562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7500287A Expired - Lifetime JPH0722084B2 (en) | 1987-03-27 | 1987-03-27 | Electrolytic solution for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722084B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08270567A (en) * | 1995-03-31 | 1996-10-15 | Iwaki:Kk | Diaphragm type fluid supply device |
-
1987
- 1987-03-27 JP JP7500287A patent/JPH0722084B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08270567A (en) * | 1995-03-31 | 1996-10-15 | Iwaki:Kk | Diaphragm type fluid supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63240011A (en) | 1988-10-05 |
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