JPS6262451B2 - - Google Patents
Info
- Publication number
- JPS6262451B2 JPS6262451B2 JP14375582A JP14375582A JPS6262451B2 JP S6262451 B2 JPS6262451 B2 JP S6262451B2 JP 14375582 A JP14375582 A JP 14375582A JP 14375582 A JP14375582 A JP 14375582A JP S6262451 B2 JPS6262451 B2 JP S6262451B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- electrolytic
- electrolytic paper
- density
- double
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 23
- 239000011888 foil Substances 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims 2
- 239000000123 paper Substances 0.000 description 46
- 239000002655 kraft paper Substances 0.000 description 15
- 239000003792 electrolyte Substances 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 238000004049 embossing Methods 0.000 description 6
- 238000010294 electrolyte impregnation Methods 0.000 description 5
- 239000008151 electrolyte solution Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004816 paper chromatography Methods 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 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
- 230000006866 deterioration Effects 0.000 description 1
- CKKXWJDFFQPBQL-UAIGNFCESA-N diazanium;(z)-but-2-enedioate Chemical compound [NH4+].[NH4+].[O-]C(=O)\C=C/C([O-])=O CKKXWJDFFQPBQL-UAIGNFCESA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 229940085991 phosphate ion Drugs 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Electrophonic Musical Instruments (AREA)
- Primary Cells (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
本発明は電解コンデンサに関するものであり、
その目的とするところは、電解液の含浸性や電気
特性などが改善された電解コンデンサを提供せん
とするものである。
一般的に言つて、電解コンデンサは陽極箔と陰
極箔との間に、電解紙を介在させて構成されてお
り、例えば陰極アルミ箔の上に電解紙、この電解
紙の上に陽極アルミ箔、この陽極アルミ箔の上に
電解紙と順々に積層し、これを巻回してコンデン
サ素子となし、このコンデンサ素子に電解液例え
ばエチレングリコールやジメチルホルムアミドに
硼酸やアジピン酸、リン酸などを溶解した電解液
を含浸させ、封口して構成されるものである。と
ころが、電解液の含浸工程においては、電解液は
コンデンサ素子の両端からのみ浸透するので、こ
れがために種々のトラブルが発生しているのであ
る。例えば、電解紙は電解液にて含浸されて膨潤
するために、電解液の浸入する空隙が減少し、コ
ンデンサ素子の中央部まで含浸するのに非常に時
間がかかること、またこのために、電解紙のペー
パークロマト現象が発生し、電解液中のリン酸塩
類のような極性の強い薬品が、コンデンサ素子の
両端部分に局部的に吸着され、エージング中のシ
ヨート不良が発生したり、電気特性が悪くなるこ
とが知られており、例えば特開昭57−76825号公
報にも記述されている。
このような問題を解決するために、種々の方法
が提案されており、例えば電解液の粘度の低下を
計ること、加圧や真空含浸を行うこと、電解液の
温度の上昇を計ること、或は二枚の電解紙を重ね
合せて二重紙タイプの電解紙となすことなどが提
案されているが、完全に満足し得る解決方法はい
まだ見い出されていない実情である。
本発明は、前述するような諸問題を解決し且つ
前述する本発明の目的を達成するために提供せん
とするものであり、本発明における第一番目の発
明に係る電解コンデンサにおいては、電解紙が一
重電解紙であり、該一重電解紙の片面にのみ、幅
方向の凹状溝が形成され、しかもこの凹状溝の深
さが一重電解紙の厚さの1/4〜3/4であるように調
節されている電解紙が使用されているのである。
また、本発明における第二番目の発明に係る電
解コンデンサにおいては、電解紙が0.30〜0.60グ
ラム／立方糎の密度を有する低密度紙と、0.70〜
0.90グラム／立方糎の密度を有する高密度紙とが
重ね合された二重紙であり、該二重電解紙の低密
度紙側にのみ、幅方向の凹状溝が形成されている
電解紙が使用されているのである。
本発明に係る電解コンデンサによれば、使用さ
れる電解紙に特別な改善が加えられているので、
電解液の含浸時間は従来よりも大幅に短縮される
ので、ペーパークロマト現象も無くなり、リン酸
などの極性の大きい薬品が局部的に吸着される現
象も無くなるので、従来から未解決の諸問題は完
全に解決することができることが判明した。
本発明において、一重電解紙及び二重電解紙に
形成される凹状溝は、通常のエンボス加工による
のが適当であり、エンボス加工機は通常のもので
も良いし、抄紙機のウエツトパート又はドライパ
ート上に取り付けることができる。エンボスロー
ルの凸部の数は10〜50本／糎が適当である。
本発明の電解コンデンサに使用されたクラフト
一重電解紙及びクラフト二重電解紙並びに従来か
ら使用されているクラフト一重電解紙及びクラフ
ト二重電解紙について、それぞれ電解液の含浸試
験を行つた。この場合、コンデンサ素子の大きさ
は、長さが18ミリメートル、外径が10ミリメート
ルであつた。電解液の組成はエチレングリコール
47.5％、ジメチルホルムアミド47.5％、マレイン
酸アンモニウム4.5％、リン酸成分0.5％であつ
た。含浸時間は、コンデンサ素子を、その下端が
約２ミリメーターぐらい電解液に浸漬するように
なしたる後、コンデンサ素子の上端にまで完全に
電解液が浸透してくるまでの時間を測定した。ま
た、電解紙中のリン酸イオン濃度はJIS−K0102
によつて測定した。
本発明の電解コンデンサに使用されたクラフト
一重電解紙及びクラフト二重電解紙について行つ
た電解液の含浸試験の結果は、下記の第１表に示
す通りであつた。
The present invention relates to an electrolytic capacitor,
The purpose is to provide an electrolytic capacitor with improved electrolyte impregnability and electrical characteristics. Generally speaking, an electrolytic capacitor is constructed by interposing electrolytic paper between an anode foil and a cathode foil. For example, electrolytic paper is placed on the cathode aluminum foil, anode aluminum foil is placed on the electrolytic paper, Electrolytic paper is sequentially laminated on top of this anode aluminum foil and wound to form a capacitor element, and this capacitor element is coated with an electrolyte such as ethylene glycol or dimethylformamide dissolved in boric acid, adipic acid, phosphoric acid, etc. It is constructed by impregnating it with an electrolyte and sealing it. However, in the electrolytic solution impregnation process, the electrolytic solution permeates only from both ends of the capacitor element, which causes various problems. For example, electrolytic paper swells when it is impregnated with electrolyte, which reduces the number of voids that the electrolyte can penetrate, and it takes a very long time to impregnate the center of the capacitor element. A paper chromatography phenomenon occurs, and highly polar chemicals such as phosphates in the electrolyte are locally adsorbed at both ends of the capacitor element, causing short circuit defects during aging and poor electrical characteristics. It is known that this can cause deterioration, and is also described in, for example, Japanese Patent Application Laid-open No. 76825/1983. Various methods have been proposed to solve these problems, such as measuring the decrease in the viscosity of the electrolyte, applying pressure or vacuum impregnation, measuring the increase in the temperature of the electrolyte, or Although it has been proposed to overlap two sheets of electrolytic paper to make double-layered electrolytic paper, a completely satisfactory solution has not yet been found. The present invention is intended to be provided in order to solve the above-mentioned problems and achieve the above-mentioned object of the present invention.In the electrolytic capacitor according to the first invention, electrolytic paper It is single-layer electrolytic paper, and a concave groove in the width direction is formed only on one side of the single-layer electrolytic paper, and the depth of this concave groove is 1/4 to 3/4 of the thickness of the single-layer electrolytic paper. Electrolytic paper that has been regulated is used. Further, in the electrolytic capacitor according to the second invention of the present invention, the electrolytic paper is a low density paper having a density of 0.30 to 0.60 grams/cubic glue, and a low density paper having a density of 0.70 to 0.60 grams/cubic glue.
It is a double-layered paper in which high-density paper having a density of 0.90 g/cubic glue is laminated, and the electrolytic paper has concave grooves in the width direction only on the low-density paper side of the double-layered electrolytic paper. It is being used. According to the electrolytic capacitor according to the present invention, special improvements have been made to the electrolytic paper used.
The electrolyte impregnation time is significantly shorter than before, eliminating the paper chromatography phenomenon and the local adsorption of highly polar chemicals such as phosphoric acid, which eliminates various previously unresolved problems. It turns out that it can be completely solved. In the present invention, it is appropriate for the concave grooves to be formed on the single-electrolytic paper and the double-electrolytic paper to be formed by ordinary embossing, and the embossing machine may be a conventional embossing machine, or it may be formed on the wet part or dry part of the paper machine. It can be attached to. The appropriate number of embossing rolls is 10 to 50 protrusions/glue. Electrolyte impregnation tests were conducted on the kraft single electrolytic paper and kraft double electrolytic paper used in the electrolytic capacitor of the present invention, as well as the kraft single electrolytic paper and kraft double electrolytic paper that have been conventionally used. In this case, the capacitor element had a length of 18 mm and an outer diameter of 10 mm. The composition of the electrolyte is ethylene glycol
47.5% dimethylformamide, 4.5% ammonium maleate, and 0.5% phosphoric acid component. The impregnation time was determined by immersing the capacitor element so that the lower end of the capacitor element was about 2 mm into the electrolytic solution, and then measuring the time until the electrolytic solution completely penetrated to the upper end of the capacitor element. In addition, the phosphate ion concentration in electrolytic paper is JIS-K0102
Measured by. The results of an electrolyte impregnation test conducted on the kraft single electrolytic paper and the kraft double electrolytic paper used in the electrolytic capacitor of the present invention are as shown in Table 1 below.
【表】
また、比較のために、従来から使用されている
クラフト一重電解紙及びクラフト二重電解紙につ
いて行つた電解液の含浸試験の結果を示すと、下
記の第２表に示す通りであつた。[Table] For comparison, the results of an electrolyte impregnation test conducted on conventionally used kraft single electrolytic paper and kraft double electrolytic paper are shown in Table 2 below. Ta.
【表】
第１表に示す試験番号(1)及び(2)のクラフト一重
電解紙には、エンボス加工による凹状溝が形成さ
れているものであり、何れも凹状溝の深さは電解
紙の厚さの1/3であつた。また、第１表に示す試
験番号(3)、(4)、(5)及び(6)のクラフト二重電解紙
は、厚さが15〜20μで、密度が0.70〜0.90グラ
ム／立方糎である高密度クラフト紙に、抄紙機上
で、密度が0.30〜0.60グラム／立方糎である低密
度クラフト紙を抄き合せて、第１表に示された厚
さの二重電解紙となしたものである。また、第１
表に示す試験番号(3)及び(4)のクラフト二重電解紙
には、エンボス加工による凹状溝が形成されてい
るものであり、何れも凹状溝の深さは電解紙の厚
さの1/3であつた。また、試験番号(5)及び(6)のク
ラフト二重電解紙には、試験番号(3)及び(4)のクラ
フト二重電解紙と同様に凹状溝が形成されてい
て、凹状溝の深さは電解紙の厚さの1/2であつ
た。
第１表及び第２表に示された試験結果を比較し
て明らかな通り、本発明の電解コンデンサに使用
された一重電解紙及び二重電解紙は、電解液の含
浸性が非常に良好であり、また電解紙にリン酸イ
オンの局部的吸着が無いのであるから、本発明に
係る電解コンデンサは電気特性が改善され、また
エージング中のシヨート不良率も減少したもので
あること明白である。[Table] The kraft single-ply electrolytic papers of test numbers (1) and (2) shown in Table 1 have concave grooves formed by embossing, and in both cases, the depth of the concave grooves is the same as that of the electrolytic paper. It was 1/3 of the thickness. In addition, the kraft double electrolytic paper of test numbers (3), (4), (5) and (6) shown in Table 1 has a thickness of 15 to 20μ and a density of 0.70 to 0.90 grams/cubic starch. A certain high-density kraft paper was combined with a low-density kraft paper having a density of 0.30 to 0.60 g/cubic starch on a paper machine to make double electrolytic paper with the thickness shown in Table 1. It is something. Also, the first
The kraft double electrolytic papers of test numbers (3) and (4) shown in the table have concave grooves formed by embossing, and in both cases the depth of the concave grooves is 1 of the thickness of the electrolytic paper. It was /3. In addition, similar to the kraft double electrolytic papers of test numbers (3) and (4), the kraft double electrolytic papers of test numbers (5) and (6) had concave grooves formed, and the depth of the concave grooves was The thickness was 1/2 the thickness of electrolytic paper. As is clear from comparing the test results shown in Tables 1 and 2, the single electrolytic paper and double electrolytic paper used in the electrolytic capacitor of the present invention have very good electrolyte impregnation properties. Since there is no local adsorption of phosphate ions on the electrolytic paper, it is clear that the electrolytic capacitor according to the present invention has improved electrical characteristics and also has a reduced shot defect rate during aging.
Claims (1)
る電解コンデンサにおいて、電解紙が一重紙であ
り、且つ該一重電解紙の片面にのみ、幅方向の凹
状溝が形成され、該凹状溝の深さが一重電解紙の
厚さの1/4〜3/4であることを特徴とする電解コン
デンサ。 ２ 陽極箔と陰極箔との間に電解紙が介在して成
る電解コンデンサにおいて、電解紙が0.30〜0.60
グラム／立方糎の密度を有する低密度紙と、0.70
〜0.90グラム／立方糎の密度を有する高密度紙と
が重ね合された二重紙であり、且つ該二重電解紙
の低密度紙側にのみ、幅方向の凹状溝が形成され
ていることを特徴とする電解コンデンサ。[Claims] 1. In an electrolytic capacitor in which electrolytic paper is interposed between an anode foil and a cathode foil, the electrolytic paper is a single-layer paper, and only one side of the single-layer electrolytic paper has concave grooves in the width direction. An electrolytic capacitor characterized in that the depth of the concave groove is 1/4 to 3/4 of the thickness of the single-layer electrolytic paper. 2 In an electrolytic capacitor in which electrolytic paper is interposed between an anode foil and a cathode foil, the electrolytic paper has a thickness of 0.30 to 0.60.
Low density paper with density of g/cubic glue and 0.70
It is a double-layer paper in which high-density paper with a density of ~0.90 g/cubic glue is layered, and concave grooves in the width direction are formed only on the low-density paper side of the double-layer electrolytic paper. An electrolytic capacitor featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57143755A JPS5932121A (en) | 1982-08-17 | 1982-08-17 | Electrolytic condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57143755A JPS5932121A (en) | 1982-08-17 | 1982-08-17 | Electrolytic condenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5932121A JPS5932121A (en) | 1984-02-21 |
| JPS6262451B2 true JPS6262451B2 (en) | 1987-12-26 |
Family
ID=15346261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57143755A Granted JPS5932121A (en) | 1982-08-17 | 1982-08-17 | Electrolytic condenser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5932121A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6129118A (en) * | 1984-07-19 | 1986-02-10 | ニツポン高度紙工業株式会社 | Electrolytic condenser |
| JPS62295604A (en) * | 1986-06-16 | 1987-12-23 | 株式会社クラレ | Shoes and method for molding the same |
| JPH03127508U (en) * | 1990-04-06 | 1991-12-24 | ||
| DE19843467C2 (en) | 1998-09-22 | 2001-01-04 | Epcos Ag | Aluminum electrolytic capacitor with a spacer with an embossed line structure |
| JP4496580B2 (en) * | 1999-12-28 | 2010-07-07 | 日本ケミコン株式会社 | Electrolytic capacitor |
| JP4617529B2 (en) * | 1999-12-28 | 2011-01-26 | 日本ケミコン株式会社 | Electrolytic capacitor |
-
1982
- 1982-08-17 JP JP57143755A patent/JPS5932121A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5932121A (en) | 1984-02-21 |
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