JP3047024B2 - Solid electrolytic capacitors - Google Patents
Solid electrolytic capacitorsInfo
- Publication number
- JP3047024B2 JP3047024B2 JP2240324A JP24032490A JP3047024B2 JP 3047024 B2 JP3047024 B2 JP 3047024B2 JP 2240324 A JP2240324 A JP 2240324A JP 24032490 A JP24032490 A JP 24032490A JP 3047024 B2 JP3047024 B2 JP 3047024B2
- Authority
- JP
- Japan
- Prior art keywords
- anode body
- solid electrolyte
- solid electrolytic
- hole
- electrolytic capacitor
- 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
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は固体電解コンデンサの改良に関する。Description: TECHNICAL FIELD The present invention relates to improvements in solid electrolytic capacitors.
（従来の技術） 従来、固体電解コンデンサの電解質としては、二酸化
マンガン等の無機系電解質が使われてきた。しかし、最
近ではテトラシアノキノジメタン（TCNQ）、ポリピロー
ル等の有機半導体を使用したものが開発されている。(Prior Art) Conventionally, an inorganic electrolyte such as manganese dioxide has been used as an electrolyte of a solid electrolytic capacitor. However, recently, those using organic semiconductors such as tetracyanoquinodimethane (TCNQ) and polypyrrole have been developed.
（発明が解決しようとする課題） ポリピロール等の導電性高分子を使った固体電解コン
デンサにおいては、陽極引出し端子を接続し酸化皮膜を
形成した弁作用金属箔に化学重合、電解重合などにより
導電性高分子層を形成し、銀等の集電層および陰極引出
し端子を設けて構成される。(Problems to be solved by the invention) In a solid electrolytic capacitor using a conductive polymer such as polypyrrole, an anode lead terminal is connected, and a valve action metal foil having an oxide film formed thereon is electrically conductive by chemical polymerization or electrolytic polymerization. A polymer layer is formed, and a current collecting layer of silver or the like and a cathode lead terminal are provided.
この従来の構造においては、弁作用金属箔（陽極体）
の表裏に形成した導電性高分子層の導通を良好にするた
めに導電性高分子層上に銀ペースト等により集電層を形
成するようにしていた。しかし、ポリピロール等の導電
性高分子層は導電率において異方性を有しているため、
集電層を形成しても等価直列抵抗が高いという問題点が
あった。In this conventional structure, a valve action metal foil (anode body)
In order to improve the conductivity of the conductive polymer layers formed on the front and back of the above, a current collecting layer was formed on the conductive polymer layer by using a silver paste or the like. However, since a conductive polymer layer such as polypyrrole has anisotropy in conductivity,
Even when the current collecting layer is formed, there is a problem that the equivalent series resistance is high.
本発明は上述の問題点に鑑みてなされたものであり、
表裏の導通を良好にし、等価直列抵抗の低い固体電解コ
ンデンサを提供することを目的とする。The present invention has been made in view of the above problems,
It is an object of the present invention to provide a solid electrolytic capacitor having good front and back continuity and low equivalent series resistance.
（課題を解決するための手段） 上記目的による本発明に係る固体電解コンデンサで
は、表面に酸化皮膜が形成されると共に陽極引出し端子
が接続された弁作用金属箔を陽極体とし、該陽極体に形
成された酸化皮膜を介して陽極体に陰極引出し端子が取
り付けられ、陽極体の酸化皮膜上に固体電解質層が形成
された固体電解コンデンサにおいて、前記陽極体の少な
くとも１個所に陽極体の表裏に貫通する透孔が形成さ
れ、該透孔の内壁面が絶縁性樹脂で被覆され、前記透孔
内に、陽極体の表裏面の前記固体電解質層を導通させる
導電材が介そうされていることを特徴としている。(Means for Solving the Problems) In the solid electrolytic capacitor according to the present invention according to the above object, a valve action metal foil having an oxide film formed on the surface and connected to an anode lead terminal is used as an anode body, and the anode body is provided with: A cathode lead-out terminal is attached to the anode body via the formed oxide film, and in a solid electrolytic capacitor in which a solid electrolyte layer is formed on the oxide film of the anode body, at least one portion of the anode body is provided on both sides of the anode body. A through hole is formed, the inner wall surface of the through hole is coated with an insulating resin, and a conductive material for conducting the solid electrolyte layers on the front and back surfaces of the anode body is passed through the through hole. It is characterized by.
上記導電材は固体電解質と同一素材のものが好適であ
るが、他の素材、例えば固体電解質上に銀ペースト等に
より集電層を形成するときは集電層と同一の素材のもの
とすることができる。The conductive material is preferably made of the same material as the solid electrolyte.However, when a current collecting layer is formed on another material, for example, a silver paste on the solid electrolyte, the same material as the current collecting layer should be used. Can be.
固体電解質層はポリピロールで形成することができ
る。The solid electrolyte layer can be formed of polypyrrole.
（作用） 本発明によれば、弁作用金属箔の透孔内の導電材を通
じて表裏の固体電解質層を導通させることができるの
で、コンデンサの等価直列抵抗を低減させることができ
る。透孔内壁面を絶縁性樹脂により被覆することによっ
て、特に透孔を金属箔の化成後に形成する場合、露出し
た金属面が被覆されるので漏れ電流を低減することがで
きる。(Operation) According to the present invention, since the solid electrolyte layers on the front and back can be conducted through the conductive material in the through-hole of the valve action metal foil, the equivalent series resistance of the capacitor can be reduced. By coating the inner wall surface of the through-hole with the insulating resin, particularly when the through-hole is formed after the formation of the metal foil, the exposed metal surface is covered, so that the leakage current can be reduced.
なお、弁作用金属箔上に陰極引出し端子を先に取着
し、この陰極引出し端子を陽極にして、固体電解質を形
成させる場合は、陰極引出し端子部分から固体電解質の
形成が広がっていくので、陽極体に透孔があいていると
裏面への固体電解質の形成を容易にすることができる。In addition, when the cathode extraction terminal is attached first on the valve action metal foil, and this cathode extraction terminal is used as an anode to form a solid electrolyte, since the formation of the solid electrolyte spreads from the cathode extraction terminal portion, When the anode body has a through hole, it is possible to easily form a solid electrolyte on the back surface.
（実施例） 以下添付図面に基づいて本発明の好適な実施例を詳細
に説明する。Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
実施例 陽極体１として、エッチングおよび化成の施された50
WVのアルミニウム箔を使用した。２は酸化皮膜を示す。
このアルミニウム箔を四角形状に裁断し、円形の透孔９
を形成した後、陽極引出し端子３を超音波溶媒により接
続した。続いて、アルミニウム箔の４辺の裁断面、陽極
引出し端子３の接続部および透孔９の内壁面部分に紫外
線硬化型の絶縁性樹脂10を塗布して硬化させた。この状
態を第２図に示す。EXAMPLE As the anode body 1, 50 was subjected to etching and chemical conversion.
WV aluminum foil was used. 2 shows an oxide film.
This aluminum foil is cut into a square shape, and a circular through hole 9 is formed.
Was formed, the anode extraction terminal 3 was connected with an ultrasonic solvent. Subsequently, an ultraviolet-curable insulating resin 10 was applied to the four sides of the aluminum foil, the connection portion of the anode lead-out terminal 3 and the inner wall surface of the through-hole 9, and was cured. This state is shown in FIG.
陽極体１の表裏に電解重合によりポリピロール膜を生
成せしめて固体電解質層４を形成した。この固体電解質
層４は透孔９内壁面に形成した絶縁性樹脂10表面をも覆
って形成され、表裏の固体電解質層４を連絡する。次い
で固体電解質層４を覆って銀ペーストによる集電層５を
設け、陰極引出し端子６を導電性接着剤７により取着し
てから、絶縁性の外装樹脂８で外装して10WVのコンデン
サを試作した。なお本実施例では、透孔９内は固体電解
質層４の他に集電層５を形成する銀ペーストも充填され
ている。A polypyrrole film was formed on the front and back of the anode body 1 by electrolytic polymerization to form a solid electrolyte layer 4. The solid electrolyte layer 4 is also formed so as to cover the surface of the insulating resin 10 formed on the inner wall surface of the through hole 9 and connects the solid electrolyte layers 4 on the front and back. Next, a current collecting layer 5 made of silver paste is provided to cover the solid electrolyte layer 4, a cathode lead terminal 6 is attached with a conductive adhesive 7, and then a 10 WV capacitor is prototyped by packaging with an insulating resin 8. did. In the present embodiment, the inside of the through hole 9 is filled with a silver paste for forming the current collecting layer 5 in addition to the solid electrolyte layer 4.
従来例 陽極体として，エッチングおよび化成の施された50WV
のアルミニウム箔を使用した。このアルミニムウム箔に
陽極引出し端子を接続した後、アジピン酸アンモニウム
水溶液中に浸漬して50Vを印加し再化成処理を行った。
次に、電解重合によりポリピロール層を形成し、以下上
記実施例と同様にして10WVのコンデンサを作製した。Conventional example As an anode body, 50 WV etched and formed
Was used. After connecting the anode lead-out terminal to this aluminum foil, it was immersed in an aqueous solution of ammonium adipate and applied with 50 V to carry out re-chemical treatment.
Next, a polypyrrole layer was formed by electrolytic polymerization, and thereafter, a 10 WV capacitor was manufactured in the same manner as in the above example.
作製したコンデンサの特性を第１表に示した。 Table 1 shows the characteristics of the manufactured capacitors.
本発明による実施例では漏れ電流および等価直列抵抗
を低減することができる。In the embodiment according to the present invention, the leakage current and the equivalent series resistance can be reduced.
以上本発明につき好適な実施例をあげて種々説明した
が、本発明はこの実施例に限定されるものではなく、発
明の精神を逸脱しない範囲で多くの改変を施し得るのは
もちろんである。Although the preferred embodiments of the present invention have been described in various ways, the present invention is not limited to the embodiments, and it is needless to say that many modifications can be made without departing from the spirit of the invention.
（発明の効果） 本発明によれば、漏れ電流や等価直列抵抗の低い固体
電解コンデンサを提供することができる。(Effects of the Invention) According to the present invention, a solid electrolytic capacitor having low leakage current and low equivalent series resistance can be provided.
第１図は実施例のコンデンサの構造を示す断面図、第２
図はその製造の過程を示す説明図である。 １……陽極体、２……酸化皮膜、３……陽極引出し端
子、４……固体電解質層、５……集電層、６……陰極引
出し端子、７……導電性接着剤、８……外装樹脂、９…
…透孔、10……絶縁性樹脂。FIG. 1 is a sectional view showing the structure of a capacitor according to an embodiment, and FIG.
The figure is an explanatory view showing the manufacturing process. DESCRIPTION OF SYMBOLS 1 ... Anode body, 2 ... Oxide film, 3 ... Anode lead-out terminal, 4 ... Solid electrolyte layer, 5 ... Current collector layer, 6 ... Cathode lead-out terminal, 7 ... Conductive adhesive, 8 ... ... exterior resin, 9 ...
... through holes, 10 ... insulating resin.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−224315（ＪＰ，Ａ) 特開 昭61−40019（ＪＰ，Ａ) 特開 昭58−204523（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01G 9/04 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-224315 (JP, A) JP-A-61-40019 (JP, A) JP-A-58-204523 (JP, A) (58) Field (Int.Cl. 7 , DB name) H01G 9/04
Claims (3)
出し端子が接続された弁作用金属箔を陽極体とし、該陽
極体に形成された酸化皮膜を介して陽極体に陰極引出し
端子が取り付けられ、陽極体の酸化皮膜上に固体電解質
層が形成された固体電解コンデンサにおいて、 前記陽極体の少なくとも１個所に陽極体の表裏に貫通す
る透孔が形成され、該透孔の内壁面が絶縁性樹脂で被覆
され、前記透孔内に前記絶縁性樹脂を覆って、陽極体の
表裏面の前記固体電解質層を導通させる導電材が介そう
されていることを特徴とする固体電解コンデンサ。An anode body is provided with a valve action metal foil having an oxide film formed on the surface and connected to an anode lead terminal, and a cathode lead terminal is attached to the anode body via the oxide film formed on the anode body. And a solid electrolytic capacitor having a solid electrolyte layer formed on an oxide film of the anode body, wherein at least one portion of the anode body has a through hole formed on the front and back of the anode body, and the inner wall surface of the through hole is insulated. A solid electrolytic capacitor, which is covered with a conductive resin, covers the insulating resin in the through-hole, and passes through a conductive material for conducting the solid electrolyte layers on the front and back surfaces of the anode body.
り、陽極体表裏の固体電解質層を接続することを特徴と
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 conductive material is made of the same material as the solid electrolyte layer, and connects the solid electrolyte layers on the front and back of the anode body.
を特徴とする請求項１または２記載の固体電解コンデン
サ。3. The solid electrolytic capacitor according to claim 1, wherein the solid electrolyte layer is made of polypyrrole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2240324A JP3047024B2 (en) | 1990-09-10 | 1990-09-10 | Solid electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2240324A JP3047024B2 (en) | 1990-09-10 | 1990-09-10 | Solid electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04119624A JPH04119624A (en) | 1992-04-21 |
| JP3047024B2 true JP3047024B2 (en) | 2000-05-29 |
Family
ID=17057781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2240324A Expired - Fee Related JP3047024B2 (en) | 1990-09-10 | 1990-09-10 | Solid electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3047024B2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3924844B2 (en) * | 1997-05-30 | 2007-06-06 | 石川島播磨重工業株式会社 | Turbocharger thrust bearing structure |
| US6239965B1 (en) | 1998-05-22 | 2001-05-29 | Matsushita Electric Industrial Co., Ltd. | Electrolytic capacitor and method of producing the same |
| US6862169B2 (en) | 2002-02-21 | 2005-03-01 | Showa Denko Kabushiki Kaisha | Solid electrolytic capacitor and method for producing the same |
| DE602006020239D1 (en) | 2006-01-24 | 2011-04-07 | Ihi Corp | Motor powered charging |
| DE602006008264D1 (en) | 2006-01-26 | 2009-09-17 | Ihi Corp | Turbo-charger |
| US8157543B2 (en) | 2006-03-23 | 2012-04-17 | Ihi Corporation | High-speed rotating shaft of supercharger |
| JP4671177B2 (en) | 2006-06-02 | 2011-04-13 | 株式会社Ｉｈｉ | Electric turbocharger |
| JP4753033B2 (en) | 2006-06-02 | 2011-08-17 | 株式会社Ｉｈｉ | Electric turbocharger |
| JP4899114B2 (en) * | 2007-03-15 | 2012-03-21 | 富士通株式会社 | Solid electrolytic capacitor |
| JP4911611B2 (en) * | 2007-04-27 | 2012-04-04 | 三洋電機株式会社 | Solid electrolytic capacitor |
| JP2010171255A (en) * | 2009-01-23 | 2010-08-05 | Sanyo Electric Co Ltd | Solid electrolytic capacitor and method of manufacturing the same |
| JP2011258998A (en) * | 2011-10-03 | 2011-12-22 | Sanyo Electric Co Ltd | Solid electrolytic capacitor and manufacturing method of the same |
| JP2015043350A (en) * | 2011-12-20 | 2015-03-05 | ルビコン・カーリット株式会社 | Device and device manufacturing method |
-
1990
- 1990-09-10 JP JP2240324A patent/JP3047024B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04119624A (en) | 1992-04-21 |
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