JPH0766899B2 - Electric double layer capacitor - Google Patents
Electric double layer capacitorInfo
- Publication number
- JPH0766899B2 JPH0766899B2 JP1054283A JP5428389A JPH0766899B2 JP H0766899 B2 JPH0766899 B2 JP H0766899B2 JP 1054283 A JP1054283 A JP 1054283A JP 5428389 A JP5428389 A JP 5428389A JP H0766899 B2 JPH0766899 B2 JP H0766899B2
- Authority
- JP
- Japan
- Prior art keywords
- conductive
- electric double
- double layer
- layer capacitor
- rubber sheet
- 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 - Lifetime
Links
- 239000003990 capacitor Substances 0.000 title claims description 22
- 229920001971 elastomer Polymers 0.000 claims description 31
- 239000005060 rubber Substances 0.000 claims description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229920005549 butyl rubber Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 239000005062 Polybutadiene Substances 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229920002857 polybutadiene Polymers 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004073 vulcanization 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)
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、特に低抵抗電気
二重層コンデンサに関する。The present invention relates to an electric double layer capacitor, and more particularly to a low resistance electric double layer capacitor.
電気二重層現象を利用して大容量コンデンサを得る手段
の一つとして米国特許第3536963号明細書に開示されて
いるように、カーボン粉末と電解液とを接触させて電気
二重層を発生させることを利用したものがある。As disclosed in U.S. Pat. No. 3,536,963, one of means for obtaining a large-capacity capacitor by utilizing the electric double layer phenomenon, by contacting carbon powder with an electrolytic solution to generate an electric double layer. There is one that uses.
第４図は従来の電気二重層コンデンサ素子（以下素子と
称す）の断面図である。FIG. 4 is a sectional view of a conventional electric double layer capacitor element (hereinafter referred to as an element).
第４図において14は電子伝導性でかつイオン不浸透性の
導電性セパレータとなる導電性ゴムシート、６は粉末活
性炭と電解質溶液からなるペースト電極、８はペースト
電極６−６間の導通を防止するために設けたイオン透過
性で、かつ非電子伝導性を有する多孔性セパレータ、７
はペースト電極を保持しかつ外界から遮断するために設
けた非導電性ガスケットである。この素子はリング状に
打ち抜いた非導電性ガスケットと導電性ゴムシートを貼
り合せてできた凹部にペースト電極をドクターナイフ工
法等で充填した２枚のシートを多孔性セパレータを介し
て貼り合せ、加硫接着して得られる。In FIG. 4, 14 is a conductive rubber sheet that serves as a conductive separator that is electron-conductive and ion-impermeable, 6 is a paste electrode composed of powdered activated carbon and an electrolyte solution, and 8 is a conductive electrode between the paste electrodes 6-6. An ion-permeable and non-electroconductive conductive porous separator,
Is a non-conductive gasket provided to hold the paste electrode and shield it from the outside world. In this device, a non-conductive gasket punched out in a ring shape and a conductive rubber sheet are stuck together, and two sheets of paste electrodes filled with a paste electrode by a doctor knife method are stuck together through a porous separator, and then added. Obtained by vulcanization.
第５図は従来の電気二重層コンデンサの断面図である。
ここで15bは素子15aを積層した積層体、13は導電性金属
ケース、12は金属ケース13の内側面の積層体15の短絡を
防止する絶縁ケース11cの上下面にリード端子を有する
第１の電極板11aと第２の電極板11bを配置した組立電極
である。電気二重層コンデンサは、ペースト電極６内の
接触抵抗等を減らすために積層体15bに上下から１〜100
kg/cm2の圧力を加えこれを保持した状態で金属ケース13
の開口端を内側に折曲げてかしめ封口している。FIG. 5 is a sectional view of a conventional electric double layer capacitor.
Here, 15b is a laminated body in which elements 15a are laminated, 13 is a conductive metal case, 12 is a first case having lead terminals on the upper and lower surfaces of an insulating case 11c for preventing a short circuit of the laminated body 15 on the inner side surface of the metal case 13. It is an assembled electrode in which an electrode plate 11a and a second electrode plate 11b are arranged. The electric double layer capacitor is formed by stacking 1 to 100 layers from above and below the laminated body 15b in order to reduce the contact resistance in the paste electrode 6.
With the pressure of kg / cm 2 applied and held, the metal case 13
The open end of is bent inward to caulk and seal.
上述した従来の電気二重層コンデンサにおいて、導電性
ゴムシート14はブチル系ゴム等のゴム材料に導電性カー
ボンを分散させ、第６図（ａ）に示すようなカレンタン
ロール16に通して引き出された導電性ゴムシート17を、
円筒状の打抜き刃18で打抜いたものを用いていたが、こ
の導電性ゴムシートは第６図（ｃ）に示したようにカレ
ダーロールでの引き出しにより、リン片状の導電性カー
ボンが面方向に整列しており、この結果面方向の比抵抗
は低いが、厚み方向の比抵抗は面方向の比抵抗の10〜20
倍高くなっており、そのために製品の抵抗値である透過
直列抵抗を低くすることが困難であった。In the above-mentioned conventional electric double layer capacitor, the conductive rubber sheet 14 is obtained by dispersing conductive carbon in a rubber material such as butyl rubber and passing it through a carentan roll 16 as shown in FIG. 6 (a). Conductive rubber sheet 17,
What was punched out with a cylindrical punching blade 18 was used, but this conductive rubber sheet, as shown in FIG. 6 (c), was pulled out by a calender roll so that the flaky carbonaceous surface was removed. As a result, the specific resistance in the surface direction is low, but the specific resistance in the thickness direction is 10 to 20 of the specific resistance in the surface direction.
It is twice as high, which makes it difficult to reduce the transmission series resistance, which is the resistance value of the product.
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、前述一対のペースト電極層の周辺部で前述導電
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を積層してなる電気
二重層コンデンサにおいて、前述導電性セパレータとし
て、ブチル系ゴム，ブタジエン系ゴム，ポリイソプレン
あるいはこれらの共重合体，誘導体を主成分とするゴム
材料にリン片状の導電性カーボンを導電性ゴムシートの
厚み方向に整列させた導電性ゴムシートを用いたという
特徴を有している。The present invention is an ion-impermeable and electron-conductive conductive separator disposed via a pair of paste electrode layers separated via an ion-permeable and non-electron-conductive porous separator, and a pair of the aforementioned In an electric double layer capacitor formed by laminating electric double layer capacitor elements composed of a non-conductive gasket interposed between the conductive separators in the periphery of the paste electrode layer, the conductive separator is butyl rubber, Features of using a conductive rubber sheet in which flaky conductive carbon is aligned in the thickness direction of the conductive rubber sheet in a rubber material containing butadiene rubber, polyisoprene or a copolymer or derivative thereof as a main component have.
次に、本発明について図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
第１図（ａ），（ｂ）は本発明に用いる導電性ゴムシー
トを得るための工程図、第２図，第３図は本発明の一実
施例の断面図である。1 (a) and 1 (b) are process drawings for obtaining a conductive rubber sheet used in the present invention, and FIGS. 2 and 3 are cross-sectional views of an embodiment of the present invention.
まず第１図（ａ），（ｂ）のように未加硫のブチルゴム
に導電性カーボンを分散させたものを、押し出し型２に
入れ、スクリュー３を回転させて直径11mmの円柱状導電
性ゴム１を押し出す。この円柱状導電性ゴム１を回転式
のスライス刃５にて厚さ0.2mmにスライスして導電性ゴ
ムシート４を得る。First, as shown in FIGS. 1 (a) and 1 (b), an unvulcanized butyl rubber in which conductive carbon is dispersed is put into an extrusion mold 2 and a screw 3 is rotated to rotate a cylindrical conductive rubber having a diameter of 11 mm. Push 1 out. The cylindrical conductive rubber 1 is sliced with a rotary slicing blade 5 to a thickness of 0.2 mm to obtain a conductive rubber sheet 4.
次に第２図において内径6mm,外径11mmに打抜き成形した
リング状シートからなる厚さ0.5mmで未加硫ブチルゴム
製の非導電性ガスケット７の下面に前述の導電性ゴムシ
ート４を同心円上に配置・圧着させて凹部を形成する。
さらに前述の凹部に、粉末活性炭と30重量％硫酸との混
合からなるカーボンペースト電極６をドクターナイフ工
法で充填し、ペースト充填シート（図示省略）を得る。
このペースト充填シートの一対を、カーボンペースト電
極６面が相対する方向で、厚さ0.025mm,直径8mmのポリ
プロピレン製の多孔性セパレータ８を介して同心円上に
配置・合体した後、4kg/cm2の圧力の合体方向に加圧・
保持した状態で125±５℃の温度雰囲気で３時間放置
し、未加硫ブチルゴム間を共加硫接着させて本発明の電
気二重層コンデンサ素子10aを得た。Next, in FIG. 2, the conductive rubber sheet 4 is concentrically formed on the lower surface of a non-conductive gasket 7 made of unvulcanized butyl rubber and having a thickness of 0.5 mm, which is made of a ring-shaped sheet punched and formed to have an inner diameter of 6 mm and an outer diameter of 11 mm. It is arranged and pressed to form a concave portion.
Furthermore, a carbon paste electrode 6 made of a mixture of powdered activated carbon and 30% by weight sulfuric acid is filled in the above-mentioned recess by a doctor knife method to obtain a paste filling sheet (not shown).
A pair of the paste-filled sheets are concentrically arranged and united in a direction in which the surfaces of the carbon paste electrodes 6 face each other through a polypropylene porous separator 8 having a thickness of 0.025 mm and a diameter of 8 mm, and then 4 kg / cm 2 Pressing in the direction of coalescing of pressure
The held state was left for 3 hours in a temperature atmosphere of 125 ± 5 ° C., and unvulcanized butyl rubber was co-vulcanized and adhered to obtain an electric double layer capacitor element 10a of the present invention.
次に第３図に示すように、本発明の素子10aを６枚積層
して積層体10bを形成し、導電性金属ケース13内に組立
電極12と共に収納し、積層体10bの上から30kg/cm2の圧
力を加えたまま金属ケース13の開口端部をかしめ封口し
て電気二重層コンデンサを得た。さらに従来の導電性ゴ
ムシート17を外径11mmに打抜いて用いる以外は本実施例
と同一の製造条件で製作して、従来例の電気二重層コン
デンサを得た。Next, as shown in FIG. 3, six layers of the element 10a of the present invention are laminated to form a laminated body 10b, which is housed in a conductive metal case 13 together with the assembled electrode 12 and is placed on the laminated body 10b at a rate of 30 kg / With the pressure of cm 2 still applied, the open end of the metal case 13 was caulked and sealed to obtain an electric double layer capacitor. Further, an electric double layer capacitor of the conventional example was obtained by manufacturing under the same manufacturing conditions as this example except that the conventional conductive rubber sheet 17 was punched out to have an outer diameter of 11 mm and used.
本発明例と従来例の電気二重層コンデンサ各100個の電
気的特性の平均値を第１表に示す。 Table 1 shows average values of electrical characteristics of 100 electric double layer capacitors of the present invention example and the conventional example.
本実施例で明らかなように、同一製造条件でありなが
ら、本実施例の等価直列抵抗は従来例の約1/2と小さく
することができた。As is apparent from this example, the equivalent series resistance of this example could be reduced to about half that of the conventional example under the same manufacturing conditions.
以上説明したように本発明は、押し出し成型により円柱
状に押し出された導電性ゴムを押し出し方向の面と直角
方向に薄くスライスして得られた導電性ゴムシートを用
いることにより、導電性ゴムシートの厚み方向の比抵抗
を低減でき、製品の等価直列抵抗を下げることができ
る。As described above, the present invention uses a conductive rubber sheet obtained by thinly slicing a conductive rubber extruded into a columnar shape by extrusion molding in a direction perpendicular to the surface in the extrusion direction, thereby forming a conductive rubber sheet. The specific resistance in the thickness direction can be reduced, and the equivalent series resistance of the product can be reduced.
このように本発明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。Thus, the electric double layer capacitor of the present invention has great industrial value.
第１図（ａ）は押し出し成型の断面図、第１図（ｂ）は
円柱状導電性ゴムをスライスする工程の断面図、第１図
（ｃ）は本発明による導電性ゴムシートの断面図、第２
図は本発明による電気二重層コンデンサ素子の断面図、
第３図は本発明による電気二重層コンデンサの断面図、
第４図は従来例の電気二重層コンデンサ素子の断面図、
第５図は従来例の電気二重層コンデンサの断面図、第６
図（ａ）はカレンタンロールによる導電性ゴム引き出し
工程の断面図、第６図（ｂ）は導電性ゴムシートの打抜
き工程の断面図、第６図（ｃ）は従来例の導電性ゴムシ
ートの断面図。 １……押し出された円柱状の導電性ゴム、２……押し出
し型、３……スクリュー、４……スライスされた導電性
ゴムシート、５……スライス刃、６……ペースト電極、
７……非導電性ガスケット、８……多孔性セパレータ、
９……本発明による導電性ゴムシート、10a……本発明
による素子、10b……本発明による素子の積層体、11a…
…第１の電極板、11b……第２の電極板、11c……絶縁ケ
ース、12……組立電極、13……金属ケース、14……従来
の導電性ゴムシート、15a……従来の素子、15b……従来
の素子の積層体、16……カレンタンロール、17……カレ
ンタンロールにより引き出された導電性ゴムシート、18
……打抜き刃、4a……リン片状の導電性カーボン。1 (a) is a cross-sectional view of extrusion molding, FIG. 1 (b) is a cross-sectional view of a step of slicing a cylindrical conductive rubber, and FIG. 1 (c) is a cross-sectional view of a conductive rubber sheet according to the present invention. , Second
FIG. 1 is a sectional view of an electric double layer capacitor element according to the present invention,
FIG. 3 is a sectional view of an electric double layer capacitor according to the present invention,
FIG. 4 is a cross-sectional view of a conventional electric double layer capacitor element,
FIG. 5 is a sectional view of a conventional electric double layer capacitor, FIG.
FIG. 6A is a sectional view of a conductive rubber drawing step using a carentan roll, FIG. 6B is a sectional view of a conductive rubber sheet punching step, and FIG. 6C is a conventional conductive rubber sheet. Sectional view. 1 ... Extruded cylindrical conductive rubber, 2 ... Extrusion type, 3 ... Screw, 4 ... Sliced conductive rubber sheet, 5 ... Slice blade, 6 ... Paste electrode,
7: Non-conductive gasket, 8: Porous separator,
9 ... Conductive rubber sheet according to the present invention, 10a ... Element according to the present invention, 10b ... Laminated body of element according to the present invention, 11a ...
... first electrode plate, 11b ... second electrode plate, 11c ... insulating case, 12 ... assembled electrode, 13 ... metal case, 14 ... conventional conductive rubber sheet, 15a ... conventional element , 15b …… Layered body of conventional elements, 16 …… Carentan roll, 17 …… Conductive rubber sheet pulled out by the carentan roll, 18
...... Punching blade, 4a ...... Flake shaped conductive carbon.
Claims (1)
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より
構成される電気二重層コンデンサ素子を積層してなる電
気二重層コンデンサにおいて、前記導電性セパレータと
して、ブチル系ゴム，ブタジエン系ゴム，ポリイソプレ
ンあるいはこれらの共重合体，誘導体を主成分とするゴ
ム材料にリン片状の導電性カーボンを導電性ゴムシート
の厚み方向に整列させた導電性ゴムシートを用いたこと
を特徴とする電気二重層コンデンサ。1. An ion-impermeable, electron-conductive conductive separator disposed via a pair of paste electrode layers separated by an ion-permeable, non-electroconductive conductive porous separator; In an electric double layer capacitor formed by stacking electric double layer capacitor elements composed of a non-conductive gasket interposed between the conductive separators in the peripheral portion of the paste electrode layer, a butyl rubber is used as the conductive separator. Conductive rubber sheet in which flaky conductive carbon is aligned in the thickness direction of the conductive rubber sheet in a rubber material mainly composed of butadiene rubber, polyisoprene or a copolymer or derivative thereof Electric double layer capacitor characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1054283A JPH0766899B2 (en) | 1989-03-06 | 1989-03-06 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1054283A JPH0766899B2 (en) | 1989-03-06 | 1989-03-06 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02232916A JPH02232916A (en) | 1990-09-14 |
| JPH0766899B2 true JPH0766899B2 (en) | 1995-07-19 |
Family
ID=12966235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1054283A Expired - Lifetime JPH0766899B2 (en) | 1989-03-06 | 1989-03-06 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0766899B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997025728A1 (en) * | 1996-01-12 | 1997-07-17 | Nippon Zeon Co., Ltd. | Collector for electrical double-layer capacitor |
-
1989
- 1989-03-06 JP JP1054283A patent/JPH0766899B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02232916A (en) | 1990-09-14 |
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