JPH02276222A - Aperture-sealing material for electrolytic capacitor and manufacture thereof - Google Patents
Aperture-sealing material for electrolytic capacitor and manufacture thereofInfo
- Publication number
- JPH02276222A JPH02276222A JP9823689A JP9823689A JPH02276222A JP H02276222 A JPH02276222 A JP H02276222A JP 9823689 A JP9823689 A JP 9823689A JP 9823689 A JP9823689 A JP 9823689A JP H02276222 A JPH02276222 A JP H02276222A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- aperture
- electrolytic capacitor
- sealing body
- main material
- 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 description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000003566 sealing material Substances 0.000 title description 2
- 229920001971 elastomer Polymers 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000004073 vulcanization Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 238000009503 electrostatic coating Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 230000008020 evaporation Effects 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 7
- 239000003792 electrolyte Substances 0.000 abstract description 4
- 239000011521 glass Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000004593 Epoxy Substances 0.000 abstract description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052731 fluorine Inorganic materials 0.000 abstract description 2
- 239000011737 fluorine Substances 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000013013 elastic material Substances 0.000 abstract 1
- 238000007610 electrostatic coating method Methods 0.000 abstract 1
- 239000008151 electrolyte solution Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は電解コンデンサ用封口体及びその製造方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sealing body for an electrolytic capacitor and a method for manufacturing the same.
従来の技術
従来の電解コンデンサは、第２図に示すように陽極箔と
陰極箔とをセパレータを介して巻回し、電解液を含浸し
た内部素子１をアルミケース２に収納した後、ゴム弾性
体３で蓋をした後、アルミケース２の開口部を変形させ
、ゴム弾性体３に圧縮応力を与えることで密封している
。４はリード線である。しかしこのようにして封口した
電解コンデンサは、長時間にわたって内部電解液がゴム
分子中に膨油・拡散・蒸発することで外部に放出され、
やがてはドライアップに至り、容量減少・損失面の正接
が大きくなり、コンデンサの機能を消失させる。2. Description of the Related Art A conventional electrolytic capacitor is constructed by winding an anode foil and a cathode foil with a separator in between, as shown in FIG. 3, the opening of the aluminum case 2 is deformed and compressive stress is applied to the rubber elastic body 3 to seal it. 4 is a lead wire. However, in an electrolytic capacitor sealed in this way, the internal electrolyte swells, diffuses, and evaporates into the rubber molecules over a long period of time, causing it to be released to the outside.
Eventually, dry-up occurs, and the capacitance decreases and the tangent on the loss side increases, causing the capacitor to lose its function.
発明が解決しようとする課題 電解液の蒸発量ΔＷ ／ Ｈｒは０式で示される。Problems that the invention aims to solve The amount of evaporation of the electrolytic solution ΔW/Hr is expressed by the formula 0.
ΔＷ／Ｈｒ＝ｋＸ （Ｓｔ −８２）／１ｘＴＳＩ ；
π×（封口ゴムの半径ｒ＋） ２８２：２ＸπＸ（リー
ド穴径の半径ｒ２）２ｔ ：封口ゴムの厚み
ｋ ：封口ゴム材質によって決定される係数
Ｓｔ −ｓ２ 、開口実面積
Ｔ ；一定温度下での放置時間
内部電解液が０式によって一定温度の下で、減少しやが
て電解液が消失すると、電解コンデンサの寿命がつきる
。一般に電解コンデンサは寿命を使用温度と使用時間で
示し、その条件以下で使用されているが、できる限り寿
命を延ばす方法として封目方法としてはゴムの透過性を
おさえた材料の選定がなされてきたが、ゴムを使う限り
現在使われてきたブチルゴム以外に大幅に寿命延長はで
きない。ゴム以外で透過性が小さい材料としてテフロン
をはじめとする樹脂・ガラス・金属などがあるが、これ
らはゴムに比べ弾性が小さ（、温度サイクル評価におい
て封口体とケースとの密着性が悪く、電解液もれに至る
ため、現在までこれらの材料単体では実用化に到ってな
い。ΔW/Hr=kX (St -82)/1xTSI;
π×(Radius of sealing rubber r+) 282:2 The life of the electrolytic capacitor ends when the internal electrolytic solution decreases and eventually disappears at a constant temperature due to the standing time. Generally, the lifespan of electrolytic capacitors is determined by the operating temperature and operating time, and they are used under these conditions.However, in order to extend the lifespan as much as possible, materials that suppress the permeability of rubber have been selected as a sealing method. However, as long as rubber is used, it is not possible to significantly extend the life of the product other than the currently used butyl rubber. Materials other than rubber that have low permeability include resins such as Teflon, glass, and metals, but these have lower elasticity than rubber (and poor adhesion between the sealing body and the case in temperature cycle evaluations, and electrolytic Until now, these materials alone have not been put to practical use because they cause liquid leakage.
課題を解決するための手段
このような課題を解決するために本発明は、封口本体の
ケース嵌合部分のみに、ゴム弾性体を１．０閤以内の厚
さで塗布したものである。Means for Solving the Problems In order to solve the above problems, the present invention is such that a rubber elastic body is applied to a thickness of 1.0 coat or less only on the case fitting portion of the sealing body.
作用
この構成により、電解液の蒸発経路が少なくなるため、
電解コンデンサの寿命を大幅に延ばすことが可能となる
。Effect This configuration reduces the number of evaporation paths for the electrolyte, so
It becomes possible to significantly extend the life of electrolytic capacitors.
実施例 以下、本発明の一実施例について説明する。Example An embodiment of the present invention will be described below.
電解コンデンサにおいて、封口体とケースの密着性が十
分でかつ蒸発量を低下させる方法として、従来法の蒸発
量を示す０式より次の方法が考えられる。In an electrolytic capacitor, as a method for achieving sufficient adhesion between the sealing body and the case and reducing the amount of evaporation, the following method can be considered based on the formula 0 representing the amount of evaporation in the conventional method.
１） ｋが小さい封口材を用いる
２） ＳＩ ８２を小さ（する
３） ｔを太き（する
本発明は以上の３方法の組合せとして、封口本体として
、ｋがほとんど零と考えられる、フェノール、エポキシ
、フッ素等の樹脂、ガラスあるいは金属を用い、ケース
嵌合時の接面部分、即ち封口本体の側面部に密着性を完
全なものとするための弾性ゴムを１．０＋ｍ以内の厚さ
で介在させたものである。1) Use a sealing material with a small k value 2) Make the SI 82 small (3) Make the t thick (the present invention is a combination of the above three methods, and uses phenol, which is thought to have a k value of almost zero, Using resin such as epoxy or fluorine, glass or metal, apply elastic rubber with a thickness of 1.0+m or less to the contact surface when the case is fitted, i.e. the side surface of the sealing body, to ensure complete adhesion. It is something that has been mediated.
次に、本発明の封口体の製造方法について説明すると、
具体的方法としては、あらかじめ加硫し弾性をもたせた
ゴムを粉砕し、非ゴムの封口本体に静電塗装法により付
着させるものである。この方法ではゴム弾性体に圧縮応
力を加える前はゴムは粉末片ごとに分れているが、圧縮
応力を加えると個々の粉末片はゴム弾性をもっており、
かつ同物質のため、よ（密着し、液体の封止上は何ら実
用上問題ない。また付着量を加減することで必要な厚み
範囲を決定できる。Next, the method for manufacturing the sealing body of the present invention will be explained.
A specific method involves crushing rubber that has been previously vulcanized to give it elasticity, and then adhering it to a non-rubber sealing body by electrostatic coating. In this method, before compressive stress is applied to the rubber elastic body, the rubber is separated into powder pieces, but when compressive stress is applied, the individual powder pieces have rubber elasticity.
Moreover, since it is the same material, it adheres well and there is no practical problem in terms of liquid sealing.Also, the required thickness range can be determined by adjusting the amount of adhesion.
また別の方法としては、非ゴムの封口本体を液状ゴム中
に浸漬した後、取り出し、その後加熱加硫する方法であ
る。加熱加硫時は封口本体の側面にのみゴム弾性体が付
着しておればよく、底面部で保持した状態で高温中に放
置すれば大量に加硫ができる。ゴム弾性体の粘度を加減
することで必要な厚み範囲を決定できる。Another method is to immerse a non-rubber sealing body in liquid rubber, take it out, and then heat and vulcanize it. During heating and vulcanization, it is sufficient that the rubber elastic body is attached only to the side surfaces of the sealing body, and a large amount can be vulcanized by leaving it in a high temperature state while holding it at the bottom. The required thickness range can be determined by adjusting the viscosity of the rubber elastic body.
第１図に本発明の封口体を用いた電解コンデンサを示し
ており、図において封口本体５の外周面にゴム弾性体６
を塗布により付着させたものである。すなわち、ゴム弾
性体６は最少限封口本体５の外周面についておればよ（
、電解液の蒸発はゴム弾性体６の部分のみの経路であり
、その断面積に反比例して小さ（なり、大幅に寿命を延
ばすことができる。FIG. 1 shows an electrolytic capacitor using the sealing body of the present invention, in which a rubber elastic body 6 is attached to the outer peripheral surface of the sealing body 5.
is attached by coating. In other words, the rubber elastic body 6 should be attached to the outer peripheral surface of the sealing body 5 at the minimum (
The evaporation of the electrolytic solution occurs only through the rubber elastic body 6, and is small in inverse proportion to the cross-sectional area of the rubber elastic body 6, so that the life can be significantly extended.
発明の効果
以上のように本発明によれば、ゴム弾性体の厚みが１．
０−以下に薄（できるため、極めて小さいケース変形で
もってゴム弾性体に大きい圧縮応力を与えることができ
、また内外部からの機械的ストレスに対しては封口本体
の強い保持力でもって信頼性の高い封口ができる。しか
も、ゴム弾性体の厚みに反比例して電解液の蒸発量を小
さくでき、封口の質・量を大幅に向上させることができ
る。Effects of the Invention As described above, according to the present invention, the thickness of the rubber elastic body is 1.
Since it is thin (below 0-0), it is possible to apply a large compressive stress to the rubber elastic body with extremely small case deformation, and the sealing body has a strong holding force against mechanical stress from inside and outside, making it reliable. Furthermore, the amount of evaporation of the electrolyte can be reduced in inverse proportion to the thickness of the rubber elastic body, and the quality and quantity of the seal can be greatly improved.
【図面の簡単な説明】
第１図は本発明例の一実施例による電解コンデンサを示
す断面図、第２図は従来の電解コンデンサを示す断面図
である。
ｌ・・・・・・内部素子、２・・・・・・アルミケース
、５・・・・・・封口本体、６・・・・・・ゴム弾性体
。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an electrolytic capacitor according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional electrolytic capacitor. l...Internal element, 2...Aluminum case, 5...Sealing body, 6...Rubber elastic body.
Claims (3)
１．０ｍｍ以内の厚さで付着した電解コンデンサ用封口
体。(1) A sealing body for an electrolytic capacitor in which a rubber elastic body is attached to a thickness of 1.0 mm or less only on the case fitting part of the sealing body.
た請求項（１）記載の電解コンデンサ用封口体の製造方
法。(2) The method for manufacturing a sealing body for an electrolytic capacitor according to claim (1), wherein the rubber elastic powder is applied to the sealing body by electrostatic coating.
施し、弾性をもたせた請求項（１）記載の電解コンデン
サ用封口体の製造方法。(3) The method for manufacturing a sealing body for an electrolytic capacitor according to claim (1), wherein the liquid rubber is applied to the sealing body and then subjected to a vulcanization treatment to impart elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9823689A JPH02276222A (en) | 1989-04-18 | 1989-04-18 | Aperture-sealing material for electrolytic capacitor and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9823689A JPH02276222A (en) | 1989-04-18 | 1989-04-18 | Aperture-sealing material for electrolytic capacitor and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02276222A true JPH02276222A (en) | 1990-11-13 |
Family
ID=14214326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9823689A Pending JPH02276222A (en) | 1989-04-18 | 1989-04-18 | Aperture-sealing material for electrolytic capacitor and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02276222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000019467A1 (en) * | 1998-09-30 | 2000-04-06 | Cardiac Pacemakers, Inc. | Smaller electrolytic capacitors for implantable defibrillators |
-
1989
- 1989-04-18 JP JP9823689A patent/JPH02276222A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000019467A1 (en) * | 1998-09-30 | 2000-04-06 | Cardiac Pacemakers, Inc. | Smaller electrolytic capacitors for implantable defibrillators |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0241085A1 (en) | Post seal and method of manufacture for lead-acid batteries | |
| JPH0380517A (en) | Electric double layer capacitor | |
| BR0206606B1 (en) | electrode and method to do the same. | |
| US3990782A (en) | Seal for liquid crystal display cell | |
| JPH01192546A (en) | Laminated steel plate having two-layer film structure and preparation thereof | |
| US3248613A (en) | Hermetic seal for electrical device | |
| US2178686A (en) | Condenser vent | |
| US2776467A (en) | Method of making a closure and terminal construction for electrolytic devices | |
| JPH02276222A (en) | Aperture-sealing material for electrolytic capacitor and manufacture thereof | |
| JPS60157155A (en) | Battery with sealed gasket saturation hydrocarbon perfluoride plasma-treated | |
| JP2006520079A (en) | Bipolar battery partition, bipolar battery and method of manufacturing the partition | |
| CN101383229A (en) | Solid electrolytic capacitor and production method thereof | |
| KR20200077240A (en) | Anode-integrated cell pouch and method for preparation the same | |
| JPS6122563A (en) | Sealed battery | |
| JPS5630251A (en) | Manufacture of sealant for cell | |
| CA1129948A (en) | Double seal for sodium sulfur battery | |
| JPS6413714A (en) | Manufacture of solid electrolytic capacitor | |
| JPS58154164A (en) | Sealed battery | |
| JPS56128569A (en) | Fabrication of battery | |
| JP4790205B2 (en) | Battery electrode | |
| JPS5946086B2 (en) | Electrolytic capacitor | |
| US4056306A (en) | Liquid crystal display device and method of manufacturing the same | |
| JPS5935356A (en) | Sealed alkaline battery | |
| JPH0384869A (en) | Manufacture of solid secondary cell | |
| JP2541642B2 (en) | Sodium-sulfur battery and method of manufacturing the same |