JPH02181414A - Flat solid state electrolytic capacitor - Google Patents
Flat solid state electrolytic capacitorInfo
- Publication number
- JPH02181414A JPH02181414A JP1001440A JP144089A JPH02181414A JP H02181414 A JPH02181414 A JP H02181414A JP 1001440 A JP1001440 A JP 1001440A JP 144089 A JP144089 A JP 144089A JP H02181414 A JPH02181414 A JP H02181414A
- Authority
- JP
- Japan
- Prior art keywords
- electrode foil
- oxide film
- anode
- flat
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 15
- 239000007787 solid Substances 0.000 title claims abstract description 9
- 239000011888 foil Substances 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract description 5
- 229920002379 silicone rubber Polymers 0.000 abstract description 4
- 239000004945 silicone rubber Substances 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 229920006362 Teflon® Polymers 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000005030 aluminium foil Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 2
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Landscapes
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、偏平形固体電解コンデンサに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flat solid electrolytic capacitor.
従来の技術
固体電解コンデンサは、電解質として二酸化マンガンの
他、ＴＣＮＱ渚体、ポリピロール、二酸化鉛等を用いて
電極箔の酸化皮膜上に形成したものが種々検討されてい
る。Background Art Various types of solid electrolytic capacitors have been studied in which, in addition to manganese dioxide, TCNQ, polypyrrole, lead dioxide, etc. are used as the electrolyte and formed on the oxide film of the electrode foil.
発明が解決しようとする問題点
上述の電解質層を電極箔の酸化皮膜上に形成した後、巻
回して偏平状に形成すると、酸化皮１模を損傷させ、漏
れ電流が増大したりｔａｎδが増大するなどの問題があ
った。Problems to be Solved by the Invention If the above-mentioned electrolyte layer is formed on the oxide film of the electrode foil and then wound to form a flat shape, the oxide film 1 will be damaged, causing an increase in leakage current and an increase in tan δ. There were problems such as.
問題点を解決するための手段
本発明は、上述の問題を解消したもので、表面に酸化皮
膜を有する陽極用電極箔を巻回またはジグザグ状にして
偏平状に形成し、かつ上記酸化皮膜上に固体電解質層お
よび陰掻忠電層を形成してなる偏平形固体電解コンデン
サにおいて、上記偏平状に形成する陽極用電極箔の折り
曲げ部に絶縁性樹脂を塗布したことを特徴とする偏平形
固体電解コンデンサである。Means for Solving the Problems The present invention solves the above-mentioned problems by forming an anode electrode foil having an oxide film on the surface into a flat shape by winding or zigzag, and forming a flat shape on the oxide film. A flat solid electrolytic capacitor comprising a solid electrolyte layer and a negative conductive layer formed on the flat solid electrolytic capacitor, characterized in that an insulating resin is applied to the bent portion of the anode electrode foil formed in the flat shape. It is an electrolytic capacitor.
作用
偏平状に形成する陽極用電極箔の折り曲げ部に絶縁性樹
脂が塗布されているので、折り曲げ時に酸化皮膜の損傷
を低減し、また損傷した酸化皮膜に固体電解質が接触せ
ず、漏れ電流が著しく安定する。巻回前に電極箔上に固
体電解質層を形成できるので生産性が向上する。Function: An insulating resin is applied to the bent part of the anode electrode foil, which is formed into a flat shape, which reduces damage to the oxide film during bending, and prevents the solid electrolyte from coming into contact with the damaged oxide film, reducing leakage current. Significantly stable. Productivity is improved because a solid electrolyte layer can be formed on the electrode foil before winding.
実施例
以下、本発明を第１図〜第８図に示す実施例により説明
する。EXAMPLES Hereinafter, the present invention will be explained with reference to examples shown in FIGS. 1 to 8.
まずアルミニウム箔をエツチング処理し、続いて化成処
理を行って酸化皮膜を形成させる。続いて第１図のよう
に一定の幅および長さに裁断し、陽極用電極箔ｌを得る
。続いて該電極箔ｌの長さ方向の一端に厚さＱ 、 ５
ａｍ〜ｌ 、Ｑ 龍のアルミニウムからなる陽極リー
ド２を上記スポット溶接により接合する。First, the aluminum foil is etched and then chemically treated to form an oxide film. Subsequently, as shown in FIG. 1, the material is cut into a certain width and length to obtain an anode electrode foil 1. Subsequently, one end of the electrode foil l in the length direction has a thickness of Q, 5.
am~l, Q The anode lead 2 made of aluminum is joined by the spot welding described above.
ここで、陽極リード２は陽極用電極箔１の長さ方向に対
して直角になるように接合される。次に陽極用電極箔１
はリード接合部および切口部を修復化成される。続いて
陽極用電極箔１は第１図、第２図のようにコンデンサ素
子として偏平に巻回される際に、折り曲げ部となる箇所
および陽極リード接合部にシリコンゴム系の絶縁性樹脂
３で塗布される。この後、第３図のように固体電解質４
を含浸し、続いてカーボンペースト５を塗布した第４図
および第５図のように陽極リード２を回転軸として偏平
に巻回され最外周はテフロン製耐熱性テープ等により固
定する。６は巻回されたコンデンサ素子である。さらに
陽極リード２０片側（第５図では下側）を切断し、第６
図のようにシリコンゴム系の絶縁性樹脂３で塗布し、そ
の上に再度カーボンペースト５を塗布し、陰極部の導電
性を高めておく。次いで、銀ペーストにより陰極リード
７を上記カーボンペースト塗布、硬化した陰極導電層の
上に接合させる。８はモールド樹脂である。Here, the anode lead 2 is joined so as to be perpendicular to the length direction of the anode electrode foil 1. Next, electrode foil 1 for anode
The lead joints and cuts are repaired chemically. Next, when the anode electrode foil 1 is wound flatly as a capacitor element as shown in Figs. 1 and 2, silicone rubber-based insulating resin 3 is applied to the bending part and the anode lead joint part. applied. After this, as shown in Figure 3, the solid electrolyte 4
As shown in FIGS. 4 and 5, the anode lead 2 is wound flat around the anode lead 2 as a rotating shaft, and the outermost periphery is fixed with a Teflon heat-resistant tape or the like. 6 is a wound capacitor element. Furthermore, cut one side of the anode lead 20 (lower side in Fig. 5), and
As shown in the figure, a silicone rubber-based insulating resin 3 is applied, and then carbon paste 5 is applied again to increase the conductivity of the cathode part. Next, the cathode lead 7 is bonded with silver paste onto the cathode conductive layer coated with the carbon paste and cured. 8 is mold resin.
なお、外装はモールド樹脂の他、樹脂ケースや金属ケー
スに収納してもよく、既知の方法により行うことができ
、チップ形へも適用できるものである。It should be noted that the exterior may be housed in a resin case or a metal case in addition to a molded resin, and can be done by a known method, and can also be applied to a chip type.
また、陽極リード２と陽極用電極箔ｌの接合、該接合部
および電極箔の巻回折り曲げ部へのシリコンゴム系の絶
縁性樹脂３の被覆は、エツチング後の過程で行っても、
またエツチング前の過程で行っても良いのは言うまでも
ない。Furthermore, even if the bonding between the anode lead 2 and the anode electrode foil l and the coating of the silicone rubber-based insulating resin 3 on the bonded portion and the winding and bending portion of the electrode foil are performed in the process after etching,
It goes without saying that it may also be carried out during the process before etching.
折り曲げ部の機械的強度の面からは、エツチング前に行
うのが効果的とも言えるが、量産性の面からは前述の方
法が望ましい。From the viewpoint of mechanical strength of the folded portion, it can be said that it is effective to perform etching before etching, but from the viewpoint of mass production, the above-mentioned method is preferable.
また、陽極用電極箔ｌは巻回せず第９図のようにジグザ
ク状に折り曲げたものについても上述のように折り曲げ
部に絶縁性樹脂３を塗布し、同様な効果が得られる。Furthermore, even when the anode electrode foil 1 is not wound but is bent in a zigzag shape as shown in FIG. 9, the same effect can be obtained by applying the insulating resin 3 to the bent portion as described above.
発明の効果
本発明の偏平形固体電解コンデンサは以上のようにして
構成されるので、漏れ電流が著しく低減すると共に樹脂
３の塗布処理は電極箔を巻回する前にできるので生産性
の面でも極めて有利となり、工業的価値の大なるもので
ある。Effects of the Invention Since the flat solid electrolytic capacitor of the present invention is constructed as described above, leakage current is significantly reduced, and the coating process of the resin 3 can be performed before winding the electrode foil, which improves productivity. It is extremely advantageous and has great industrial value.
第１図〜第８図は本発明の偏平形電解コンデンサの一実
施例で、第１図は陽極用電極箔の展開平面図、第２図お
よび第３図は陽極用電極箔の要部断面図、第４図は陽極
用電極箔の折り曲げ説明図、第５図〜第８図は製造過程
における偏平形電解コンデンサの説明図、第９図は陽極
用電極箔の他の実施例の折り曲げ説明図である。
ｌ：陽極用電極箔 ３：絶縁性樹脂
４：固体電解質層Figures 1 to 8 show an embodiment of the flat electrolytic capacitor of the present invention. Figure 1 is a developed plan view of an anode electrode foil, and Figures 2 and 3 are cross-sections of essential parts of the anode electrode foil. Figure 4 is an explanatory diagram of folding the anode electrode foil, Figures 5 to 8 are explanatory diagrams of a flat electrolytic capacitor in the manufacturing process, and Figure 9 is an explanatory diagram of folding another example of the anode electrode foil. It is a diagram. 1: Electrode foil for anode 3: Insulating resin 4: Solid electrolyte layer
Claims (1)
グザグ状にして偏平状に形成し、かつ上記酸化皮膜上に
固体電解質層および陰極導電層を形成してなる偏平形固
体電解コンデンサにおいて、上記偏平状に形成する陽極
用電極箔の折り曲げ部に絶縁性樹脂を塗布したことを特
徴とする偏平形固体電解コンデンサ。A flat solid electrolytic capacitor comprising: an anode electrode foil having an oxide film on its surface; wound or zigzag to form a flat shape; and a solid electrolyte layer and a cathode conductive layer formed on the oxide film; A flat solid electrolytic capacitor characterized in that an insulating resin is applied to the bent part of an anode electrode foil formed into a flat shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1001440A JPH02181414A (en) | 1989-01-06 | 1989-01-06 | Flat solid state electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1001440A JPH02181414A (en) | 1989-01-06 | 1989-01-06 | Flat solid state electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02181414A true JPH02181414A (en) | 1990-07-16 |
Family
ID=11501501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1001440A Pending JPH02181414A (en) | 1989-01-06 | 1989-01-06 | Flat solid state electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02181414A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4868321U (en) * | 1971-12-07 | 1973-08-30 | ||
| JPS57113137U (en) * | 1980-12-27 | 1982-07-13 | ||
| JPS61196740U (en) * | 1985-05-31 | 1986-12-08 |
-
1989
- 1989-01-06 JP JP1001440A patent/JPH02181414A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4868321U (en) * | 1971-12-07 | 1973-08-30 | ||
| JPS57113137U (en) * | 1980-12-27 | 1982-07-13 | ||
| JPS61196740U (en) * | 1985-05-31 | 1986-12-08 |
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