JPH04330708A - Electrolytic solution for driving electrolytic capacitor - Google Patents
Electrolytic solution for driving electrolytic capacitorInfo
- Publication number
- JPH04330708A JPH04330708A JP33595690A JP33595690A JPH04330708A JP H04330708 A JPH04330708 A JP H04330708A JP 33595690 A JP33595690 A JP 33595690A JP 33595690 A JP33595690 A JP 33595690A JP H04330708 A JPH04330708 A JP H04330708A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic solution
- electrolytic
- water
- added
- mannite
- 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.)
- Granted
Links
- 239000008151 electrolyte solution Substances 0.000 title claims abstract description 22
- 239000003990 capacitor Substances 0.000 title claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims abstract description 7
- 150000007524 organic acids Chemical class 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 235000010355 mannitol Nutrition 0.000 claims abstract description 5
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims abstract description 4
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 2
- 229930195725 Mannitol Natural products 0.000 claims description 2
- 239000000594 mannitol Substances 0.000 claims description 2
- 239000000600 sorbitol Substances 0.000 claims description 2
- 239000011888 foil Substances 0.000 abstract description 3
- 239000012046 mixed solvent Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、高温度において安定した特性を有する電解
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。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as electrolytic solution) having stable characteristics at high temperatures.
従来の技術
従来より低圧用電解液としては、エチレングリコール
および水を主溶媒とし、有機酸あるいはその塩を溶解し
てなる電解液が用いられてきた。BACKGROUND ART Conventionally, as a low-pressure electrolytic solution, an electrolytic solution prepared by using ethylene glycol and water as main solvents and dissolving an organic acid or a salt thereof has been used.
発明が解決しようとする課題
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、広温度範囲で安定な電解液が要求されている。Problems to be Solved by the Invention In recent years, as aluminum electrolytic capacitors have become lower in impedance, smaller in size, and more reliable, there has been a demand for electrolytic solutions that have low specific resistance and are stable over a wide temperature range.
エチレングリコールおよび水を主溶媒とし、有機酸ある
いはその塩を溶解してなる電解液においては、比抵抗を
低くするために、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するなど問題があった。In some electrolytic solutions made by dissolving organic acids or their salts in ethylene glycol and water as main solvents, the proportion of water in the electrolytic solution is increased in order to lower the resistivity. When the blending ratio was increased, there were problems such as a significant decrease in reliability under high temperature atmosphere.
課題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
コールおよび水を主溶媒とし、有機酸あるいはその塩を
溶解してなる電解液に、マンニット、ソルビット、ズル
シットのうち１種以上を添加したことを特徴とする電解
液である。なお、添加量としては混合溶媒１００ｇに対
し０．１ｇ以上が望ましい。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention uses ethylene glycol and water as main solvents and dissolves an organic acid or its salt in an electrolytic solution. This is an electrolytic solution characterized by adding one or more kinds of electrolytes. The amount added is preferably 0.1 g or more per 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
量の水分配合においてもアルミニウム電極箔の水和を防
止し、高温雰囲気中においての信頼性を著しく向上する
。Effects The electrolytic solution according to the present invention prevents hydration of the aluminum electrode foil even when a large amount of water is added due to the reduction in specific resistance of the electrolytic solution, and significantly improves reliability in a high-temperature atmosphere.
実施例 以下、本発明の実施例について説明する。Example Examples of the present invention will be described below.
第１表は本発明の電解液と従来の電解液の組成、比抵抗
および火花発生電圧についての比較例を示す。第１表中
電解液試料記号Ａ、Ｂは従来例、ＣＤ、Ｅ、Ｆ、Ｇ、Ｈ
、Ｉ、Ｊ、Ｋ、Ｌ、Ｍ、Ｎは本発明例である。Table 1 shows comparative examples of the composition, resistivity, and spark generation voltage of the electrolytic solution of the present invention and a conventional electrolytic solution. Electrolyte sample symbols A and B in Table 1 are conventional examples, CD, E, F, G, and H.
, I, J, K, L, M, and N are examples of the present invention.
第１表から明らかなように、本発明に係る試料記号Ｃ、
Ｄ、Ｅ、Ｆ、Ｇ、Ｈ、Ｉ、Ｊ、Ｋ、Ｌ、Ｍ、Ｎの電解液
は従来の電解液に比べ、低比抵抗化に伴う多量の水分配
合においても耐電圧の低下がみられない。第２表は、第
１表に示す電解液を用いて試作した定格１００ＷＶ ３
３０μＦのアルミニウム電解コンデンサの１０５℃ ２
０００時間 高温負荷試験を行なった結果を示す。As is clear from Table 1, sample code C according to the present invention,
Compared to conventional electrolytes, D, E, F, G, H, I, J, K, L, M, and N electrolytes show a decrease in withstand voltage even when mixed with a large amount of water due to the lower specific resistance. I can't do it. Table 2 shows the rated 100WV 3 prototype manufactured using the electrolyte shown in Table 1.
30μF aluminum electrolytic capacitor at 105℃ 2
The results of a high temperature load test for 000 hours are shown.
第１表から明らかなように、本発明に係る試料記号Ｃ、
Ｄ、Ｅ、Ｆ、Ｇ、Ｈ、Ｉ、Ｊ、Ｋ、Ｌ、Ｍ、Ｎ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電解
コンデンサに比べ、多量の水分配合においても相当な信
頼性向上が見られる。As is clear from Table 1, sample code C according to the present invention,
Electrolytic capacitors using D, E, F, G, H, I, J, K, L, M, and N electrolytes are more stable even when mixed with a large amount of water than electrolytic capacitors using conventional electrolytes. A significant improvement in reliability can be seen.
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
および水を主溶媒とし、有機酸あるいはその塩を溶解し
てなる電解液に、マンニット、ソルビット、ズルシット
等のうち１種以上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は、低比抵抗化に伴う多量の水分
配合においてもアルミニウム電極箔の水和反応を防止し
、広温度範囲において優れた特性を示し、工業的ならび
に実用的価値の大なるものである。Effects of the invention As is clear from the above results, one or more of mannitol, sorbitol, dulcit, etc. was added to an electrolytic solution prepared by dissolving an organic acid or its salt in ethylene glycol and water as main solvents. The electrolytic solution for driving electrolytic capacitors, which is characterized by this, prevents the hydration reaction of aluminum electrode foil even when a large amount of water is mixed in with the reduction in resistivity, and exhibits excellent characteristics over a wide temperature range, making it suitable for industrial and industrial applications. It has great practical value.
特許出願人 ニチコン株式会社patent applicant Nichicon Co., Ltd.
Claims (1)
るいはその塩を溶解してなる電解液に、マンニット、ソ
ルビット、ズルシットのうち１種以上を添加したことを
特徴とする電解コンデンサの駆動用電解液。An electrolytic solution for driving an electrolytic capacitor, characterized in that one or more of mannitol, sorbitol, and dulcit is added to an electrolytic solution prepared by dissolving an organic acid or its salt in ethylene glycol and water as main solvents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02335956A JP3100395B2 (en) | 1990-11-29 | 1990-11-29 | Electrolyte for driving electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02335956A JP3100395B2 (en) | 1990-11-29 | 1990-11-29 | Electrolyte for driving electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04330708A true JPH04330708A (en) | 1992-11-18 |
| JP3100395B2 JP3100395B2 (en) | 2000-10-16 |
Family
ID=18294215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02335956A Expired - Fee Related JP3100395B2 (en) | 1990-11-29 | 1990-11-29 | Electrolyte for driving electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3100395B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007081138A (en) * | 2005-09-14 | 2007-03-29 | Nichicon Corp | Electrolyte for driving electrolytic capacitor |
-
1990
- 1990-11-29 JP JP02335956A patent/JP3100395B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007081138A (en) * | 2005-09-14 | 2007-03-29 | Nichicon Corp | Electrolyte for driving electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3100395B2 (en) | 2000-10-16 |
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