JP3240066B2 - Electrolyte for driving electrolytic capacitors - Google Patents
Electrolyte for driving electrolytic capacitorsInfo
- Publication number
- JP3240066B2 JP3240066B2 JP33250291A JP33250291A JP3240066B2 JP 3240066 B2 JP3240066 B2 JP 3240066B2 JP 33250291 A JP33250291 A JP 33250291A JP 33250291 A JP33250291 A JP 33250291A JP 3240066 B2 JP3240066 B2 JP 3240066B2
- Authority
- JP
- Japan
- Prior art keywords
- solution
- electrolytic solution
- electrolyte
- electrolytic
- electrolytic 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
- 239000003990 capacitor Substances 0.000 title claims description 9
- 239000003792 electrolyte Substances 0.000 title description 5
- 239000008151 electrolyte solution Substances 0.000 claims description 18
- PWATWSYOIIXYMA-UHFFFAOYSA-N Pentylbenzene Chemical compound CCCCCC1=CC=CC=C1 PWATWSYOIIXYMA-UHFFFAOYSA-N 0.000 claims description 12
- FQYVVSNFPLKMNU-UHFFFAOYSA-N 1,2-dipentylbenzene Chemical compound CCCCCC1=CC=CC=C1CCCCC FQYVVSNFPLKMNU-UHFFFAOYSA-N 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 150000007524 organic acids Chemical class 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims 1
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (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る。2. Description of the Related Art Conventionally, as an electrolytic solution of an electrolytic capacitor, an electrolytic solution obtained by dissolving an organic acid or a salt thereof in a solution mainly containing ethylene glycol has been widely used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
エチレングリコ−ルを使用した電解コンデンサは低温で
の特性が悪いため、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
なったが、その電解液を用いても最低保証温度は−５５
℃までが限界であり、さらに低温特性を向上するために
は根本的な対策を必要としていた。また、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、特に
大型の面実装品へ使用した場合、半田リフロ−炉中の２
６０℃もの熱によって電解液が気化してしまうことによ
って電解コンデンサの内圧が上昇し、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 conventional electrolytic capacitors using ethylene glycol have poor characteristics at low temperatures, γ-butyrolactone is used as a solvent for an electrolytic solution usable in a wide temperature range. However, the minimum guaranteed temperature is -55 even when the electrolytic solution is used.
C is the limit, and fundamental measures were needed to further improve low-temperature characteristics. Further, since γ-butyrolactone has a high vapor pressure in a high-temperature atmosphere, especially when used for a large-sized surface mount product, γ-butyrolactone can be used in a solder reflow furnace.
There has been a problem that the internal pressure of the electrolytic capacitor increases due to the vaporization of the electrolytic solution by the heat of 60 ° C., and the appearance expansion occurs.
【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、アミルベンゼン，ジアミルベンゼン
あるいはトリアミルベンゼンから選ばれる１種類あるい
は２種類以上を混合した溶液を主体として、その溶液中
へ有機酸また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, an electrolytic solution characterized by comprising, as a main component, a solution in which one or two or more selected from amylbenzene, diamylbenzene, and triamylbenzene are mixed, and an organic acid or a salt thereof is dissolved in the solution. .
【０００５】[0005]
【作用】本発明の電解液に使用したアミルベンゼン，ジ
アミルベンゼンあるいはトリアミルベンゼンは、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 amylbenzene, diamylbenzene or triamylbenzene used in the electrolytic solution 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 electrolytic solution, and the electrolytic solution is used even at a low temperature. Since the solidification of the liquid does not easily occur, 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、本発明に使用した溶媒と従来使用されている溶媒
の沸点および凝固点の比較を示す。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１０Ｖ 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。な
お、表１および表２中の記号ＧＢＬはγ−ブチロラクト
ンを示し、表２中の電解液試料記号Ａは従来例、Ｂ，
Ｃ，Ｄ，Ｅは本発明例である。Embodiments of the present invention will be described below. Table 1 shows a comparison between the boiling point and the freezing point of the solvent used in the present invention and those conventionally used. Table 2 shows the rate of appearance expansion after passing through a solder reflow furnace a substrate on which a surface-mounted product with a rated voltage of 10 V and 330 μF was trial manufactured using the electrolyte solution of the present invention and the conventional electrolyte solution shown in the table. showed that. Note that the symbol GBL in Tables 1 and 2 indicates γ-butyrolactone, and the electrolyte sample symbol A in Table 2 is a conventional example,
C, D, and E are examples of the present invention.
【０００７】[0007]
【表１】 [Table 1]
【０００８】[0008]
【表２】 [Table 2]
【０００９】表２から明らかなように、本発明に係る試
料記号Ｂ，Ｃ，Ｄ，Ｅの電解液を用いた電解コンデンサ
は、従来の電解液を用いたものに比べ、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ない。なお、ア
ミルベンゼン，ジアミルベンゼンあるいはトリアミルベ
ンゼンの配合量が５ｗｔ％未満の場合は改良の効果がみ
られない。また比抵抗を下げるために少なくとも１０ｗ
ｔ％の有機酸を配合する必要があり、上記配合量の上限
は９０ｗｔ％となる。As is clear from Table 2, the electrolytic capacitors using the electrolytes of sample symbols B, C, D, and E according to the present invention have higher temperatures in a high-temperature atmosphere than those using conventional electrolytes. No external expansion due to vaporization of the electrolyte is observed. When the amount of amylbenzene, diamylbenzene or triamylbenzene is less than 5 wt%, no improvement effect is obtained. Also, at least 10w to reduce the specific resistance
It is necessary to mix t% of the organic acid, and the upper limit of the amount is 90 wt%.
【００１０】[0010]
【発明の効果】以上のように、アミルベンゼン，ジアミ
ルベンゼンあるいはトリアミルベンゼンから選ばれる１
種類あるいは２種類以上を混合した溶液を主体として、
その溶液中へ有機酸またはその塩を溶解したことを特徴
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, one selected from amylbenzene, diamylbenzene or triamylbenzene
Mainly composed of a mixture of two or more types,
Since an electrolytic solution characterized by dissolving an organic acid or a salt thereof in the solution has a high boiling point and a low freezing point, an electrolytic capacitor using this electrolytic solution has good characteristics at low temperatures, and Since the appearance expansion does not occur even in a high-temperature atmosphere in a solder reflow furnace or the like, it is of great industrial and practical value.
Claims (2)
いはトリアミルベンゼンから選ばれる１種類あるいは２
種類以上を混合した溶液を主体として、その溶液中へ有
機酸また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. One or two selected from amylbenzene, diamylbenzene or triamylbenzene
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 a mixture of two or more types.
あるいはトリアミルベンゼンから選ばれる１種類あるい
は２種類以上を混合した溶液は、混合溶液中に５ｗｔ％
〜９０ｗｔ％存在する事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. A solution prepared by mixing one or more selected from the group consisting of amylbenzene, diamylbenzene, and triamylbenzene in an amount of 5 wt% 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 about 90% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33250291A JP3240066B2 (en) | 1991-11-20 | 1991-11-20 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33250291A JP3240066B2 (en) | 1991-11-20 | 1991-11-20 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05144675A JPH05144675A (en) | 1993-06-11 |
| JP3240066B2 true JP3240066B2 (en) | 2001-12-17 |
Family
ID=18255655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33250291A Expired - Fee Related JP3240066B2 (en) | 1991-11-20 | 1991-11-20 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3240066B2 (en) |
-
1991
- 1991-11-20 JP JP33250291A patent/JP3240066B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05144675A (en) | 1993-06-11 |
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