JPH10112424A - Solid electrolytic capacitor - Google Patents
Solid electrolytic capacitorInfo
- Publication number
- JPH10112424A JPH10112424A JP8264420A JP26442096A JPH10112424A JP H10112424 A JPH10112424 A JP H10112424A JP 8264420 A JP8264420 A JP 8264420A JP 26442096 A JP26442096 A JP 26442096A JP H10112424 A JPH10112424 A JP H10112424A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor element
- tape
- wind
- winding
- solid electrolytic
- 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.)
- Pending
Links
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はＴＣＮＱ錯塩、導電
性高分子等の固体電解質を用いた固体電解コンデンサに
関する。The present invention relates to a solid electrolytic capacitor using a solid electrolyte such as a TCNQ complex salt, a conductive polymer and the like.
【０００２】[0002]
【従来の技術】化成皮膜を形成した弁作用金属部材を備
えるコンデンサ素子に電解質としてのＴＣＮＱ錯塩を含
浸した固体電解コンデンサは、特公昭６２−５１４８９
号等に開示されている。2. Description of the Related Art A solid electrolytic capacitor in which a TCNQ complex salt as an electrolyte is impregnated in a capacitor element having a valve action metal member formed with a chemical conversion film is disclosed in JP-B-62-51489.
And the like.
【０００３】上記従来技術による固体電解コンデンサの
構成の一例を図４（断面図）に示す。FIG. 4 (sectional view) shows an example of the configuration of the above-mentioned conventional solid electrolytic capacitor.
【０００４】この固体電解コンデンサは、有底筒状のア
ルミニウム製ケース９にＴＣＮＱ錯塩８の粉末を適量詰
め、これを２５０〜３５０℃に加熱してＴＣＮＱ錯塩を
融解液化させ、その中へコンデンサ素子７を浸漬してＴ
ＣＮＱ錯塩を含浸させた後、急冷してＴＣＮＱ錯塩を固
化させ、ケース９の開口部にエポキシ樹脂１０を充填し
て密封したものである。６はリードタブ端子、５はリー
ド線である。In this solid electrolytic capacitor, an appropriate amount of powder of TCNQ complex salt 8 is packed in a bottomed cylindrical aluminum case 9 and heated to 250 to 350 ° C. to melt and liquefy the TCNQ complex salt. 7 soaked in T
After impregnating with the CNQ complex salt, it is quenched to solidify the TCNQ complex salt, and the opening of the case 9 is filled with an epoxy resin 10 and sealed. 6 is a lead tab terminal and 5 is a lead wire.
【０００５】前記コンデンサ素子７は、図３に示すよう
に、化成皮膜を形成した陽極用エッチドアルミニウム箔
１と対向陰極箔２とをセパレータ紙３を介して巻回し、
その外周に巻き止めテープ４を巻き付けたものである。
巻き止めテープは、ポリエステル等を基材とし、巻き付
け面に粘着のりを被着し、背面に背面処理材を被着した
ものである。[0005] As shown in FIG. 3, the capacitor element 7 is formed by winding an etched aluminum foil 1 for an anode having a chemical conversion film formed thereon and an opposite cathode foil 2 via a separator paper 3.
The winding stopper tape 4 is wound around the outer periphery.
The anti-winding tape is made of polyester or the like as a base material, and has an adhesive glue applied to the winding surface and a back surface treatment material applied to the back surface.
【０００６】[0006]
【発明が解決しようとする課題】ところが、巻き止めテ
ープの粘着のりは、アルミニウム箔やセパレータ紙に対
する接着力は強いが、巻き止めテープの背面処理材に対
しては接着力が弱いため、図２（上面図）に示すよう
に、巻き止めテープ４の長さがコンデンサ素子７の外周
よりも長いと、以下のような問題が起こる。However, the adhesive glue of the wrapping tape has a strong adhesive strength to the aluminum foil or the separator paper, but has a weak adhesive strength to the back surface treatment material of the wrapping tape. As shown in (top view), when the length of the tape 4 is longer than the outer circumference of the capacitor element 7, the following problem occurs.
【０００７】(１)巻き止め後、室内に放置している間
に、湿気の影響で巻き止めテープの巻き終わり端がはが
れることがある。(1) After stopping the winding, the end of the winding tape may come off due to the influence of moisture while being left indoors.
【０００８】(２)巻き止め後、コンデンサ素子を再化成
液に浸漬する際、再化成液の水分が巻き止めテープの粘
着のりに悪影響を及ぼし、巻き止めテープの巻き終わり
端がはがれることがある。(2) After wrapping, when the capacitor element is immersed in the re-formation solution, the moisture of the re-formation solution has an adverse effect on the adhesion of the wrap-around tape, and the end-of-roll end of the wrap-around tape may come off. .
【０００９】(３)再化成後、コンデンサ素子を１００〜
３００℃に加熱する熱処理を行う際、熱の影響により巻
き止めテープの粘着のりと背面処理材との接着力がさら
に弱まり、巻き止めテープの巻き終わり端がはがれるこ
とがある。(3) After the re-chemical formation, the capacitor element is
When performing a heat treatment of heating to 300 ° C., the adhesion between the adhesive tape of the winding tape and the back surface treatment material is further reduced due to the influence of heat, and the winding end of the winding tape may come off.
【００１０】このように巻き止めテープの巻き終わり端
がはがれると、コンデンサ素子をアルミニウムケースに
挿入するときに完全に挿入できず、外観不良が発生す
る。If the end of the winding tape is peeled off as described above, the capacitor element cannot be completely inserted when inserted into the aluminum case, resulting in poor appearance.
【００１１】本発明は、固体電解コンデンサにおける上
述の如き問題点を解決するものである。The present invention solves the above-mentioned problems in a solid electrolytic capacitor.
【００１２】[0012]
【課題を解決するための手段】本発明による固体電解コ
ンデンサは、化成皮膜を形成した陽極箔と対向陰極箔と
をセパレータを介して巻回してなるコンデンサ素子に、
固体電解質を含浸した固体電解コンデンサにおいて、前
記コンデンサ素子を巻き止めるためのテープの長さを、
コンデンサ素子の外周の長さよりも短くしたことを特徴
とするものである。The solid electrolytic capacitor according to the present invention comprises a capacitor element formed by winding an anode foil having a chemical conversion film formed thereon and an opposing cathode foil via a separator.
In a solid electrolytic capacitor impregnated with a solid electrolyte, the length of the tape for stopping the capacitor element,
It is characterized in that it is shorter than the outer circumference of the capacitor element.
【００１３】[0013]
【発明の実施の形態】本発明の好ましい実施形態に従っ
た固体電解コンデンサは、以下のような工程を経て製造
される。DESCRIPTION OF THE PREFERRED EMBODIMENTS A solid electrolytic capacitor according to a preferred embodiment of the present invention is manufactured through the following steps.
【００１４】まず、高純度のアルミニウム箔に化学的な
エッチング処理を施して表面に凹凸を形成した後、電気
化学的な陽極酸化処理（化成処理）を施して前記凹凸表
面上に酸化皮膜（化成皮膜）を形成する。First, a high-purity aluminum foil is subjected to a chemical etching treatment to form irregularities on the surface, and then subjected to an electrochemical anodic oxidation treatment (chemical conversion treatment) to form an oxide film (chemical formation) on the irregular surface. Film).
【００１５】次に、前記アルミニウム箔を陽極とし、対
向陰極箔との間にマニラ麻等からなるセパレータ紙を介
して円筒状に巻き取り、その外周に巻き止めテープを巻
き付けてコンデンサ素子を完成させる。Next, the aluminum foil is used as an anode, and the aluminum foil is wound in a cylindrical shape between the aluminum foil and the opposing cathode foil via a separator paper made of, for example, Manila hemp, and a winding tape is wound around the outer circumference to complete the capacitor element.
【００１６】この時、図１（上面図）に示すように、巻
き止めテープ４の長さをコンデンサ素子７の外周の長さ
よりも短くする。巻き止めテープは、ポリプロピレン、
ポリエステル、ポリイミド、ポリフェニレンスルフィ
ド、ポリエチレンナフタレート、ポリエーテルイミド等
を基材とし、巻き付け面に粘着のりを被着し、背面に背
面処理材を被着したものである。At this time, as shown in FIG. 1 (top view), the length of the tape 4 is made shorter than the length of the outer periphery of the capacitor element 7. The winding tape is polypropylene,
It is made of polyester, polyimide, polyphenylene sulfide, polyethylene naphthalate, polyetherimide or the like as a base material, and is provided with an adhesive paste on the winding surface and a back surface treatment material on the back surface.
【００１７】その後、前記陽極アルミニウム箔の裁断時
や巻き取り時に発生する化成皮膜の欠損、欠陥を修復す
るために再化成処理をを行い、さらに、前記化成皮膜を
安定化させるために約２００℃で熱処理を行う。Thereafter, a re-chemical conversion treatment is performed to repair the defects and defects of the chemical conversion film generated when the anode aluminum foil is cut or wound, and further, at about 200 ° C. to stabilize the chemical conversion film. Heat treatment.
【００１８】一方で、有底筒状のアルミニウム製ケース
にＮ−ｎブチルイソキノリニウム（ＴＣＮＱ）2等のＴ
ＣＮＱ錯塩の粉末を適量詰め、これを２５０〜３５０℃
に加熱してＴＣＮＱ錯塩を融解液化させる。On the other hand, a bottomed cylindrical aluminum case is filled with T-n-butylisoquinolinium (TCNQ) 2 or other T
Pack an appropriate amount of CNQ complex salt powder,
To melt the TCNQ complex.
【００１９】そして、前記コンデンサ素子を前記ケース
内で融解液化させたＴＣＮＱ錯塩中に浸漬してＴＣＮＱ
錯塩を含浸させた後、急冷してＴＣＮＱ錯塩を固化さ
せ、前記ケースの開口部にエポキシ樹脂を充填し、エー
ジング処理を行って、所望の固体電解コンデンサが完成
する。Then, the capacitor element is immersed in a TCNQ complex salt melted and liquefied in the case to form a TCNQ.
After impregnation with the complex salt, the TCNQ complex salt is quenched by solidification, filled with an epoxy resin in the opening of the case, and subjected to aging treatment to complete a desired solid electrolytic capacitor.
【００２０】ここで、本発明に従って巻き止めテープの
長さをコンデンサ素子の長さよりも短くした実施例１、
２と、従来例に従って巻き止めテープの長さをコンデン
サ素子の長さよりも長くした従来例１、２について、仕
様を表１に、電気特性（試料数５０個の平均）及び外観
不良の発生率（試料数１０００個）を表２に示す。外観
不良とは、巻き止めテープの巻き終わり端がはがれたた
めに、コンデンサ素子がアルミケースに正常に挿入でき
ていない状態を意味する。Here, according to the first embodiment, the length of the wrapping tape is shorter than the length of the capacitor element according to the present invention.
Table 2 shows the electrical characteristics (average of 50 samples) and the incidence of appearance defects for Conventional Example 2 and Conventional Examples 1 and 2 in which the length of the tape was longer than the length of the capacitor element according to the conventional example. (Number of samples: 1000) is shown in Table 2. Inferior appearance means that the capacitor element cannot be properly inserted into the aluminum case because the end of the winding tape has come off.
【００２１】[0021]
【表１】 [Table 1]
【００２２】[0022]
【表２】 [Table 2]
【００２３】表１及び表２を見ればわかるように、本発
明実施例においては従来例に比べて外観不良率が著しく
低下している。As can be seen from Tables 1 and 2, the appearance defect rate of the embodiment of the present invention is significantly lower than that of the conventional example.
【００２４】なお、本発明においてコンデンサ素子に含
浸される固体電解質としては、前記ＴＣＮＱ錯塩の代わ
りに、ポリピロール、ポリチオフェン、ポリフラン、ポ
リアニリン、あるいはそれらの誘導体等の導電性高分子
を用いてもよい。In the present invention, as the solid electrolyte impregnated in the capacitor element, a conductive polymer such as polypyrrole, polythiophene, polyfuran, polyaniline, or a derivative thereof may be used instead of the TCNQ complex salt.
【００２５】[0025]
【発明の効果】以上のように、本発明による固体電解コ
ンデンサにおいては、従来例に比べて外観不良の発生が
抑制され、電気特性が損なわれることもない。また、巻
き止めテープの材料費も削減される。As described above, in the solid electrolytic capacitor according to the present invention, the appearance failure is suppressed as compared with the conventional example, and the electric characteristics are not impaired. Also, the material cost of the winding tape is reduced.
【図１】本発明実施例において用いられるコンデンサ素
子の上面図である。FIG. 1 is a top view of a capacitor element used in an embodiment of the present invention.
【図２】従来例において用いられるコンデンサ素子の上
面図である。FIG. 2 is a top view of a capacitor element used in a conventional example.
【図３】コンデンサ素子の部分分解斜視図である。FIG. 3 is a partially exploded perspective view of a capacitor element.
【図４】固体電解コンデンサの断面図である。FIG. 4 is a sectional view of a solid electrolytic capacitor.
１ 陽極箔 ２ 陰極箔 ３ セパレータ紙 ４ 巻き止めテープ ５ リード線 ６ リードタブ端子 ７ コンデンサ素子 ８ 固体電解質 ９ 外装ケース １０ 封口樹脂 DESCRIPTION OF SYMBOLS 1 Anode foil 2 Cathode foil 3 Separator paper 4 Anti-winding tape 5 Lead wire 6 Lead tab terminal 7 Capacitor element 8 Solid electrolyte 9 Outer case 10 Sealing resin
Claims (3)
とをセパレータを介して巻回してなるコンデンサ素子
に、固体電解質を含浸した固体電解コンデンサにおい
て、 前記コンデンサ素子を巻き止めるためのテープの長さ
を、コンデンサ素子の外周の長さよりも短くしたことを
特徴とする固体電解コンデンサ。1. A solid electrolytic capacitor in which a solid electrolyte is impregnated with a capacitor element formed by winding an anode foil having a chemical conversion film formed thereon and an opposite cathode foil via a separator, wherein a tape for winding the capacitor element is provided. A solid electrolytic capacitor characterized in that the length is shorter than the length of the outer periphery of the capacitor element.
導電性高分子からなることを特徴とする請求項１記載の
固体電解コンデンサ。2. The solid electrolytic capacitor according to claim 1, wherein the solid electrolyte is made of a TCNQ complex salt or a conductive polymer.
ピレンまたはポリエステルまたはポリイミドまたはポリ
フェニレンスルフィドまたはポリエチレンナフタレート
またはポリエーテルイミドからなることを特徴とする請
求項２記載の固体電解コンデンサ。3. The solid electrolytic capacitor according to claim 2, wherein the base material of the winding tape is made of polypropylene, polyester, polyimide, polyphenylene sulfide, polyethylene naphthalate, or polyetherimide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8264420A JPH10112424A (en) | 1996-10-04 | 1996-10-04 | Solid electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8264420A JPH10112424A (en) | 1996-10-04 | 1996-10-04 | Solid electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10112424A true JPH10112424A (en) | 1998-04-28 |
Family
ID=17402935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8264420A Pending JPH10112424A (en) | 1996-10-04 | 1996-10-04 | Solid electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10112424A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011187602A (en) * | 2010-03-08 | 2011-09-22 | Nippon Chemicon Corp | Electrolytic capacitor |
| JP2011216737A (en) * | 2010-03-31 | 2011-10-27 | Nippon Chemicon Corp | Electrolytic capacitor |
| WO2023101001A1 (en) * | 2021-12-03 | 2023-06-08 | 日本ケミコン株式会社 | Power storage device and method for manufacturing same |
-
1996
- 1996-10-04 JP JP8264420A patent/JPH10112424A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011187602A (en) * | 2010-03-08 | 2011-09-22 | Nippon Chemicon Corp | Electrolytic capacitor |
| JP2011216737A (en) * | 2010-03-31 | 2011-10-27 | Nippon Chemicon Corp | Electrolytic capacitor |
| WO2023101001A1 (en) * | 2021-12-03 | 2023-06-08 | 日本ケミコン株式会社 | Power storage device and method for manufacturing same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040217 |