JPH0457313A - Electric double layer capacitor - Google Patents
Electric double layer capacitorInfo
- Publication number
- JPH0457313A JPH0457313A JP2169134A JP16913490A JPH0457313A JP H0457313 A JPH0457313 A JP H0457313A JP 2169134 A JP2169134 A JP 2169134A JP 16913490 A JP16913490 A JP 16913490A JP H0457313 A JPH0457313 A JP H0457313A
- Authority
- JP
- Japan
- Prior art keywords
- laminate
- electric double
- double layer
- layer capacitor
- conductive
- 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 31
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011231 conductive filler Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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〕
本発明は電気二重層コンデンサに関し、特に接触抵抗を
低減させた電気二重層コンデンサに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric double layer capacitor, and particularly to an electric double layer capacitor with reduced contact resistance.
一般にカーボンペースト電極を用いた電気二重層コンデ
ンサの素子（以下基本セルと称す）は、第３図に示すよ
うにイオン透過性でかつ非電子伝導性の多孔性セパレー
タ１ｏを介して分離された一対の粉末活性炭と電解質溶
液から成るカーボンペースト電極９を介して配置された
一対のイオン不浸透性の導電性セパレータ７と、前記一
対のカ−ボンベースト電極９の周辺部で前記導電性セバ
レータフの間に介在するカーボンペースト電極９を保持
し、かつ外界から遮断するために設けられた非導電性ガ
スケット８よりなる構造を有する。Generally, an electric double layer capacitor element (hereinafter referred to as a basic cell) using carbon paste electrodes consists of a pair of cells separated by a porous separator 1o that is permeable to ions and non-electronic conductive, as shown in Fig. 3. A pair of ion-impermeable conductive separators 7 are disposed through a carbon paste electrode 9 made of powdered activated carbon and an electrolyte solution, and a conductive separator 7 is placed between the conductive separator 7 at the periphery of the pair of carbon-based electrodes 9. It has a structure consisting of a non-conductive gasket 8 provided to hold the intervening carbon paste electrode 9 and isolate it from the outside world.
さらに電気二重層コンデンサは第４図に示すように使用
電圧に応じて基本セル５ａを必要枚数積層した積層体５
と金属製の外装ケース４と、前記外装ケース４と基本セ
ル５ａの積層体５の側面との短絡を防ぐ為の絶縁ケース
３と、前記絶縁ケース３の上下面にそれぞれ配置された
リード端子を有する第１のリード電極板１と、第２のリ
ード電極板２とからなり、前記積層体５上面と２のリー
ド電極板２間、積層体５下面と外装ケース４底部内面の
間、及び第１のリード電極板１と外装ケース４の間がそ
れぞれ電気的に接続されてケーシングした構造を有する
。電気二重層コンデンサは、カーボンペースト電極９内
、基本セル５ａ間、外装ケース４と基本セル５ａの積層
体５の最下面間、および第２のリード電極板２と基本セ
ル５ａの積層体５の最上面間等の接触抵抗を減らす為に
基本セル５ａの積層体５に１〜１００ ｋｇ／ ｃｍ２
の圧力を加えこれを保持した状態で外装ケース４の開口
端を内側に折り曲げてかしめ封口している。Further, as shown in FIG. 4, the electric double layer capacitor is a laminate 5 in which a required number of basic cells 5a are laminated according to the working voltage.
and a metal outer case 4, an insulating case 3 for preventing a short circuit between the outer case 4 and the side surface of the laminate 5 of the basic cell 5a, and lead terminals arranged on the upper and lower surfaces of the insulating case 3, respectively. between the upper surface of the laminate 5 and the second lead electrode plate 2, between the lower surface of the laminate 5 and the bottom inner surface of the exterior case 4, and the second lead electrode plate 2. The lead electrode plate 1 and the exterior case 4 are electrically connected to each other and have a casing structure. The electric double-layer capacitor is formed between the carbon paste electrode 9, between the basic cells 5a, between the bottom surface of the laminate 5 of the outer case 4 and the basic cell 5a, and between the second lead electrode plate 2 and the laminate 5 of the basic cell 5a. 1 to 100 kg/cm2 is applied to the laminate 5 of the basic cell 5a in order to reduce contact resistance between the top surfaces, etc.
While applying and holding this pressure, the open end of the outer case 4 is bent inward and caulked to seal it.
上述した従来の電気二重層コンデンサは、積層体と外装
ケース間および積層体と第２のリード電極板間の接触抵
抗が大きい為に電気二重層コンデンサの等価直列抵抗（
以下ＥＳＲと称す）が大きくなってしまうという欠点が
ある。In the conventional electric double layer capacitor described above, the contact resistance between the laminate and the outer case and between the laminate and the second lead electrode plate is large, so the equivalent series resistance of the electric double layer capacitor (
There is a drawback that the ESR (hereinafter referred to as ESR) becomes large.
本発明の目的は、導電性セパレータと外装ケース開、あ
るいは導電性セパレータと第２のリード電極間の接触抵
抗を低減し、等価直列抵抗（ＥＳＲ）を小さくした電気
二重層コンデンサを提供することにある。An object of the present invention is to provide an electric double layer capacitor that has a reduced equivalent series resistance (ESR) by reducing the contact resistance between a conductive separator and an outer case opening, or between a conductive separator and a second lead electrode. be.
本発明はイオン透過性で非電子伝導性の多孔性セパレー
タを介して分離された一対のペースト電極層を介して配
置されたイオン不浸透性で電子伝導性の導電性セパレー
タと、前述の一対のペースト電極層の周辺部で前述の導
電性セパレータの間に介在する非導電性ガスケットより
構成される電気二重層コンデンサ素子の積層体を外装ケ
ースに収納して絶縁ケースの上下面にリード端子を有す
る第１のリード電極と第２のリード電極板を配置した組
立電極でケーシングして得られた電気二重層コンデンサ
において、外装ケースと積層体間、あるいは第２のリー
ド電極板と積層体間の少なくとも一方に導電性接着剤を
有している。The present invention includes an ion-impermeable, electronically conductive conductive separator disposed through a pair of paste electrode layers separated by an ion-permeable, electronically non-conductive porous separator; A laminate of electric double layer capacitor elements consisting of a non-conductive gasket interposed between the aforementioned conductive separators around the paste electrode layer is housed in an exterior case, and lead terminals are provided on the upper and lower surfaces of the insulating case. In an electric double layer capacitor obtained by casing with an assembled electrode in which a first lead electrode and a second lead electrode plate are arranged, there is at least one area between the outer case and the laminate, or between the second lead electrode plate and the laminate. One side has a conductive adhesive.
次に、本発明について図面を参照して説明する。第１図
は本発明の一実施例の縦断面図である。外径１１ｍ＋ｏ
、厚さ１．４ｍｍの基本セル５ａを６枚積層して積層体
５を形成後、積層体５の最下部にエポキシ系樹脂と導電
フィラー（銀粉）および硬化剤からなる導電性接着剤を
塗布し、導電性接着剤塗布面と外装ケース底面が接着す
るように積層体５を収納し、絶縁ケース３の上下面にリ
ード端子を有する第１のリード電極板１と第２のリード
！［！板２を配置した組立電極を介して積層体５に３０
ｋｇ／ｃｍ２の機械的圧力を加え、この状態を保持し
たまま外装ケース４の上端をがしぬ封口し、電気二重層
コンデンサを得た。得られた電気二重層コンデンサに塗
布した導電性接着剤を硬化させる為に１３０℃の恒温層
に３０分間放置し、本発明の電気二重層コンデンサを得
な。Next, the present invention will be explained with reference to the drawings. FIG. 1 is a longitudinal sectional view of an embodiment of the present invention. Outer diameter 11m+o
After forming a laminate 5 by stacking six basic cells 5a each having a thickness of 1.4 mm, a conductive adhesive consisting of an epoxy resin, a conductive filler (silver powder), and a hardening agent is applied to the bottom of the laminate 5. Then, the laminate 5 is housed so that the conductive adhesive coated surface and the bottom surface of the exterior case are adhered, and the first lead electrode plate 1 and the second lead electrode plate 1 having lead terminals on the upper and lower surfaces of the insulating case 3 are attached. [! 30 to the laminated body 5 via the assembled electrode on which the plate 2 is arranged.
A mechanical pressure of kg/cm2 was applied, and while this state was maintained, the upper end of the outer case 4 was sealed without peeling, to obtain an electric double layer capacitor. In order to cure the conductive adhesive applied to the obtained electric double layer capacitor, the capacitor was left in a constant temperature bath at 130° C. for 30 minutes to obtain the electric double layer capacitor of the present invention.
さらに導電性接着剤を塗布しない従来の電気二重層コン
デンサを本発明の実施例と同一製造条件にて得た。Further, a conventional electric double layer capacitor not coated with a conductive adhesive was obtained under the same manufacturing conditions as the examples of the present invention.
第１表
本発明の実施例と従来例の電気二重層コンデンサ各５０
個の電気的特性の平均値を第１表に示す０本発明の実施
例は従来例のものに比べ等価直列抵抗を約１８％小さく
することができた。Table 1 50 electric double layer capacitors each of the embodiment of the present invention and the conventional example
Table 1 shows the average values of the electrical characteristics of the 0.00000000000000000000000000000000000000000000000000000000000000000000000000000 0000000 00000000000000000000000000000000000000000000000000000000000100000000000100I EXAMPLES OF THE EMBODIMENT OF THE INVENTIONThe average values of the individual electrical characteristics are shown in Table 1.The embodiment of the present invention was able to reduce the equivalent series resistance by about 18% compared to the conventional example.
第２図は本発明の実施例２の縦断面図である。FIG. 2 is a longitudinal sectional view of Example 2 of the present invention.
外径１１＋＋ｍ、厚さ１．４ｍｍの基本セル５ａを６枚
積層して積層体５を形成後、積層体５の最上部および最
下部にエポキシ系樹脂と導電フィラー（銀粉）および硬
化剤からなる導電性接着剤を塗布し、積層体５の最下部
の導電性接着剤塗布面と外装ケース底面が接着するよう
に積層体５を収納し、絶縁ケース３の上下面にリード端
子を有する第１のリード電極板１と第２のリード電極板
２を配置した組立電極の第２のリード電極板２が、積層
体５の最上部の導電性接着剤塗布面に接着するようにか
ぶせ、組立電極を介して積層体５に３０ｋｇ／ｃｍ２の
機械的圧力を加え、この状態を保持したまま、外装ケー
ス４の上端をかしめ封口し、電気二重層コンデンサを得
た。得られた電気二重層コンデンサに塗布した導電性接
着剤を硬化させる為に、１３０℃の恒温槽に３０分間放
置し、本発明の実施例２の電気二重層コンデンサを得た
。さらに、導電性接着剤を塗布しない従来の電気二重層
コンデンサを本発明の実施例２と同一製造条件に第２表
本発明の実施例２と従来例の電気二重層コンデンサ各５
０個の電気的特性の平均値を第２表に示す。本発明の実
施例２は、従来例のものに比べ等価直列抵抗を約３４％
小さくすることができた。After forming a laminate 5 by stacking six basic cells 5a with an outer diameter of 11++ m and a thickness of 1.4 mm, the top and bottom of the laminate 5 are filled with an epoxy resin, a conductive filler (silver powder), and a curing agent. The laminate 5 is coated with a conductive adhesive, and the laminate 5 is housed so that the lowermost conductive adhesive coated surface of the laminate 5 adheres to the bottom surface of the outer case. The second lead electrode plate 2 of the assembled electrode, in which the lead electrode plate 1 and the second lead electrode plate 2 are arranged, is placed over the topmost conductive adhesive coated surface of the laminate 5 so as to adhere to the assembled electrode. A mechanical pressure of 30 kg/cm2 was applied to the laminate 5 through the laminate 5, and while this state was maintained, the upper end of the outer case 4 was caulked and sealed to obtain an electric double layer capacitor. In order to harden the conductive adhesive applied to the obtained electric double layer capacitor, it was left in a constant temperature bath at 130° C. for 30 minutes to obtain an electric double layer capacitor of Example 2 of the present invention. Furthermore, conventional electric double layer capacitors without conductive adhesive were manufactured under the same manufacturing conditions as Example 2 of the present invention.
The average values of 0 electrical characteristics are shown in Table 2. Embodiment 2 of the present invention has an equivalent series resistance of about 34% compared to the conventional example.
I was able to make it smaller.
以上説明したように本発明は、導電性セパレータと外装
ケースの底面間、あるいは導電性セパレータと第２のリ
ード電極板間の少なくとも一方に導電性接着剤を塗布す
ることで導電性セパレータと外装ケース間、あるいは導
電性セパレータと第２のリード電極板間の接触抵抗を低
減し、ＥＳＲを小さくする効果がある。このように本発
明例の電気二重層コンデンサは工業的価値大なるものが
ある。As explained above, the present invention provides a method for connecting the conductive separator and the exterior case by applying a conductive adhesive between the conductive separator and the bottom surface of the exterior case, or between the conductive separator and the second lead electrode plate. This has the effect of reducing ESR by reducing the contact resistance between the conductive separator and the second lead electrode plate. As described above, the electric double layer capacitor of the present invention has great industrial value.
第１図は本発明の一実施例における電気二重層コンデン
サの縦断面図、第２図は実施例２における電気二重層コ
ンデンサの縦断面図、第３図は電気二重層コンデンサの
基本セルの縦断面図、第４図は従来の電気二重層コンデ
ンサの縦断面図である。
１・・・第１のリード電極板、２・・・第２の電極板、
３・・・絶縁ケース、４・・・外装ケース、５ａ・・基
本セル、５・・・積層体、６・・・導電性接着剤、７・
・・導電性セパレータ、８・・・非導電性ガスケット、
９・・・カーボンペースト電極、１０・・・多孔性セパ
レータ。Fig. 1 is a longitudinal cross-sectional view of an electric double layer capacitor in an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of an electric double layer capacitor in Example 2, and Fig. 3 is a longitudinal cross-section of a basic cell of an electric double layer capacitor. The plan view and FIG. 4 are longitudinal cross-sectional views of a conventional electric double layer capacitor. 1... First lead electrode plate, 2... Second electrode plate,
3... Insulating case, 4... Exterior case, 5a... Basic cell, 5... Laminate, 6... Conductive adhesive, 7...
... Conductive separator, 8... Non-conductive gasket,
9... Carbon paste electrode, 10... Porous separator.
Claims (1)
て、分離された一対のペースト電極層を介して配置され
たイオン不浸透性で電子伝導性の導電性セパレータと、
前記一対のペースト電極層の周辺部で前記導電性セパレ
ータの間に介在する非導電性ガスケットにより、構成さ
れる電気二重層コンデンサ素子の積層体を外装ケース内
に収納し、前記外装ケースを経て、前記積層体の最下部
とを電気的に接続する突出したリード端子を有する第１
のリード電極板と、前記素子の最上部と電気的に接続す
る突出したリード端子を有する第２のリード電極板を第
２のリード電極板のリード端子が貫通する孔を設けた絶
縁ケースを介して一体化した組立電極を前記積層体に被
せ、所定の圧力を加えて、保持したまま前記外装ケース
の開口端部をカール状にかしめ封口して得られる電気二
重層コンデンサにおいて、前記積層体と外装ケース底面
間、あるいは積層体と第２のリード電極板間の少なくと
も一方に導電性接着剤を有することを特徴とする電気二
重層コンデンサ。an ion-impermeable, electronically-conductive conductive separator disposed through a pair of paste electrode layers separated by an ion-permeable, electronically non-conductive porous separator;
A laminate of electric double layer capacitor elements constituted by a non-conductive gasket interposed between the conductive separators at the periphery of the pair of paste electrode layers is housed in an exterior case, and passed through the exterior case, a first lead terminal having a protruding lead terminal electrically connecting the lowermost part of the laminate;
and a second lead electrode plate having a protruding lead terminal electrically connected to the top of the element through an insulating case provided with a hole through which the lead terminal of the second lead electrode plate passes. In the electric double layer capacitor obtained by covering the laminate with an assembled electrode integrated with the laminate, applying a predetermined pressure, and clinching the open end of the outer case in a curled shape while holding it, the laminate and An electric double layer capacitor characterized by having a conductive adhesive between the bottom surfaces of the outer case or between the laminate and the second lead electrode plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2169134A JPH0457313A (en) | 1990-06-27 | 1990-06-27 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2169134A JPH0457313A (en) | 1990-06-27 | 1990-06-27 | Electric double layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0457313A true JPH0457313A (en) | 1992-02-25 |
Family
ID=15880917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2169134A Pending JPH0457313A (en) | 1990-06-27 | 1990-06-27 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0457313A (en) |
-
1990
- 1990-06-27 JP JP2169134A patent/JPH0457313A/en active Pending
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