JPH01290216A - Electric double layer capacitor - Google Patents

Electric double layer capacitor

Info

Publication number
JPH01290216A
JPH01290216A JP63121351A JP12135188A JPH01290216A JP H01290216 A JPH01290216 A JP H01290216A JP 63121351 A JP63121351 A JP 63121351A JP 12135188 A JP12135188 A JP 12135188A JP H01290216 A JPH01290216 A JP H01290216A
Authority
JP
Japan
Prior art keywords
conductive
carbon
double layer
electric double
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.)
Pending
Application number
JP63121351A
Other languages
Japanese (ja)
Inventor
Koichi Watanabe
浩一 渡辺
Shunjiro Imagawa
今川 俊次郎
Toru Kasatsugu
笠次 徹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP63121351A priority Critical patent/JPH01290216A/en
Publication of JPH01290216A publication Critical patent/JPH01290216A/en
Pending legal-status Critical Current

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors

Abstract

PURPOSE:To lower an equivalent series resistance(ESR) as a whole by attaching a carbon-based powder to the surface of a conductive sheet composed of a resin sheet or a rubber sheet whose conductivity has been given by containing a carbon-based material. CONSTITUTION:Conductive sheets 13, 14 are constituted of a sheet formed by mixing a powder of carbon black, graphite or the like as a conductive carbon- based material with a comparatively soft synthetic resin or rubber such as, e.g., polyisobytylene or butyl rubber and by kneading them. In addition, a conductive carbon-based powder such as carbon black, graphite or the like is attached to the surface of the sheet by a spraying operation, a rubbing operation or the like. Accordingly, even when the conductive sheets are softened under a high temperature, a conductive route at an interface of contact with other conductors is secured by the carbon-based powder which has been attached to the surface. By this setup, an increase in a contact resistance between this and other conductors is prevented; an ESR is hardly raised even under high- temperature surroundings.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、複数個の電気二重層コンデンサ素子を積層し
てなる積層体を導電性ケース内に収納した電気二重層コ
ンデンサの改良に関し、特に、積層体の両側に配置され
る導電板が改良されたものに関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an improvement of an electric double layer capacitor in which a laminate formed by laminating a plurality of electric double layer capacitor elements is housed in a conductive case, and particularly relates to , relates to an improved conductive plate disposed on both sides of the laminate.

〔従来の技術〕[Conventional technology]

例えば、実開昭60−167329号に開示されている
ように、複数の電気二重層コンデンサ素子を重ねてなる
積層体を導電性ケース内に収納した構造の電気二重層コ
ンデンサが公知である。このような電気二重層コンデン
サでは、積層体の積層方向外側から該積層体を挟持する
ように、一対の導電板が配置されている。
For example, as disclosed in Japanese Utility Model Application Publication No. 60-167329, an electric double layer capacitor having a structure in which a laminate formed by stacking a plurality of electric double layer capacitor elements is housed in a conductive case is known. In such an electric double layer capacitor, a pair of conductive plates are arranged to sandwich the laminate from the outside in the stacking direction of the laminate.

導電板は、通常、ポリイソブチレンやブチルゴムなどの
比較的軟質の合成樹脂またはゴムからなる基材に、カー
ボンブラックや黒鉛などの導電性炭素系材料を分散させ
た厚み0.1〜0.31のシートにより構成されている
A conductive plate is usually made of a base material made of relatively soft synthetic resin or rubber such as polyisobutylene or butyl rubber, with a thickness of 0.1 to 0.31 mm, in which a conductive carbon material such as carbon black or graphite is dispersed. It is made up of sheets.

上記導電板は、その軟質性により、外側に配置される電
極板等の表面の微細な凹凸に密着される。
Due to its softness, the conductive plate is brought into close contact with minute irregularities on the surface of an electrode plate or the like disposed on the outside.

従って、接触される他の導体との接触抵抗を低めること
により、装置全体の等個直列抵抗を低下させる機能を果
たす、また、外部とのはんだ付等の取扱作業を行うに際
し、内部の電気二重層コンデンサ素子への熱的な衝撃を
緩和する機能も果たす。
Therefore, by lowering the contact resistance with other conductors that are contacted, it serves the function of lowering the equal series resistance of the entire device. It also functions to alleviate thermal shock to multilayer capacitor elements.

さらに、積層体の積層方向外側表面から、電解液が揮散
することを抑制する働きも有する。′〔発明が解決しよ
うとする技術的課題]しかしながら、上記のような導電
板を用いて構成された電気二重層コンデンサでは、高温
環境の下に放置された場合、等価直列抵抗(ESR)が
著しく大きくなるという問題があった。
Furthermore, it also has the function of suppressing volatilization of the electrolytic solution from the outer surface in the stacking direction of the laminate. [Technical problem to be solved by the invention] However, when an electric double layer capacitor constructed using a conductive plate as described above is left in a high-temperature environment, the equivalent series resistance (ESR) decreases significantly. There was a problem with getting bigger.

よって、本発明の目的は、前述したような導電板の種々
の機能を果たし得るだけでなく、全体としての等価直列
抵抗を効果的に低め得る導電板を備えた電気二重層コン
デンサを提供することにある。
Therefore, an object of the present invention is to provide an electric double layer capacitor equipped with a conductive plate that can not only perform the various functions of the conductive plate as described above, but also effectively reduce the overall equivalent series resistance. It is in.

〔技術的課題を解決するための手段〕[Means for solving technical problems]

本発明の電気二重層コンデンサは、複数個の電気二重層
コンデンサ素子を重ねてなる積層体と、この積層体の積
層方向外側から該積層体を挟持するように配置された一
対の導電板とを有する。−対の導電板で挟持された積層
体は、導電性ケースに収納されている。
The electric double layer capacitor of the present invention includes a laminate formed by stacking a plurality of electric double layer capacitor elements, and a pair of conductive plates arranged to sandwich the laminate from the outside in the stacking direction of the laminate. have - The laminate sandwiched between the pair of conductive plates is housed in a conductive case.

導電板は、炭素系材料を含むことにより導電性が付与さ
れた樹脂シートまたはゴムシートからなる。そして、そ
の表面に炭素系粉末が付着されていることを特徴とする
The conductive plate is made of a resin sheet or a rubber sheet that is imparted with conductivity by containing a carbon-based material. It is characterized in that carbon-based powder is adhered to its surface.

〔作用〕[Effect]

本願発明者は、上述した高温環境の下における等価直列
抵抗の増大現象を種々の実験に基づき検討した結果、導
電板と、電気二重層コンデンサ素子あるいは電極板等と
の接触界面における抵抗が増大することが原因であると
考え、導電板を改良することにより高温環境の下におけ
る等価直列抵抗の増大を防止しようと試み、本発明を成
すに至った。
The inventor of the present application investigated the phenomenon of increase in equivalent series resistance under the above-mentioned high temperature environment based on various experiments, and found that the resistance increases at the contact interface between the conductive plate and the electric double layer capacitor element or electrode plate, etc. Thinking that this was the cause, they attempted to prevent the increase in equivalent series resistance in a high-temperature environment by improving the conductive plate, and came up with the present invention.

すなわち、熱可塑性合成樹脂やブチルゴム中に微粉状の
炭素系材料を充填した導電板では、表面層に露出してい
る炭素系粒子の一部が、電気二重層コンデンサ素子等の
他の接触されている導体部分との間の導電経路を構成し
ている。しかしながら、高温環境の下に置かれた場合に
は、表面層で露出している炭素系粒子が、高温の下で軟
化した基材中に埋没し、それによって接触界面における
抵抗を増大するものと考えた。
In other words, in a conductive plate made of thermoplastic synthetic resin or butyl rubber filled with finely powdered carbon-based material, some of the carbon-based particles exposed on the surface layer may be exposed to other objects such as electric double layer capacitor elements. It constitutes a conductive path between the conductor part and the other conductor part. However, when placed in a high-temperature environment, the carbon-based particles exposed in the surface layer become embedded in the base material that has softened under the high temperature, thereby increasing the resistance at the contact interface. Thought.

本発明では、炭素系材料を含むことにより導電性が付与
された合成樹脂やゴムからなる導電板の表面に、炭素系
粉末を、吹付けまたは擦込み等により付着させることに
より、高温下における導電板の軟化にもかかわらず、そ
の表面に付着された炭素系粉末により他の導体と接触界
面における導電路が確保されている。
In the present invention, by attaching carbon-based powder to the surface of a conductive plate made of synthetic resin or rubber that has been imparted with conductivity by containing a carbon-based material by spraying or rubbing, conductivity under high temperatures is achieved. Despite the softening of the plate, the carbon-based powder attached to its surface ensures a conductive path at the contact interface with other conductors.

〔実施例の説明〕[Explanation of Examples]

第1図および第2図を参照して、本発明の一実施例が適
用される電気二重層コンデンサの構造を説明する。
The structure of an electric double layer capacitor to which an embodiment of the present invention is applied will be described with reference to FIGS. 1 and 2.

第1図に示した電気二重層コンデンサでは、略図的に位
置のみを示した複数個の電気二重層コンデンサ素子1が
、定格電圧に応じて必要数積層されて、積層体11が構
成されている。
In the electric double layer capacitor shown in FIG. 1, a plurality of electric double layer capacitor elements 1 whose positions are only schematically shown are laminated in the required number according to the rated voltage to form a laminate 11. .

単一の電気二重層コンデンサ素子lば、第2図に示すよ
うに、開口を有するガスケット2の開口内にセパレータ
3を介して分極性電極4.5を収納した構造を有する。
As shown in FIG. 2, a single electric double layer capacitor element 1 has a structure in which a polarizable electrode 4.5 is housed in an opening of a gasket 2 with a separator 3 interposed therebetween.

ここでは、開口内で分極性電極4.5が移動して相互に
接触することを防止するために、各分極性電極4.5は
接着剤6によりセパレータ3に固定されている。なお、
7.8は集電体を示し、ガスケット2表面に形成された
合成樹脂層9.10に貼り付けられている。
Here, each polarizable electrode 4.5 is fixed to the separator 3 with an adhesive 6 in order to prevent the polarizable electrodes 4.5 from moving within the opening and coming into contact with each other. In addition,
Reference numeral 7.8 indicates a current collector, which is attached to the synthetic resin layer 9.10 formed on the surface of the gasket 2.

第1図に戻り、積層体11は、熱収縮チューブ12によ
り一体化されており、かつその両側に積層体11を挟持
するように一対の導電板13.14が配置されている。
Returning to FIG. 1, the laminate 11 is integrated by a heat shrink tube 12, and a pair of conductive plates 13, 14 are arranged on both sides of the laminate 11 so as to sandwich the laminate 11 therebetween.

上方の導電板13の上には、電気二重層コンデンサ素子
1を外部と電気的に接続するための電極部15が配置さ
れている。電極部15は、絶縁板16を介して相互に電
気的に絶縁された電極板17.18を有する。この内、
下方に位置された電極板18が導電板13と面接触して
電気的に接続されている。他方、上側の電極板17は、
導電性ケース19を介して、下側の導電板14と電気的
に接続されている。
An electrode section 15 for electrically connecting the electric double layer capacitor element 1 to the outside is arranged on the upper conductive plate 13. The electrode section 15 has electrode plates 17 and 18 that are electrically insulated from each other via an insulating plate 16. Of these,
An electrode plate 18 located below is in surface contact with the conductive plate 13 and electrically connected. On the other hand, the upper electrode plate 17 is
It is electrically connected to the lower conductive plate 14 via the conductive case 19 .

なお、20は熱収縮チューブを示し、導電性ケース19
の側面を外部に対して電気的に絶縁するために設けられ
ている。また、21は封止樹脂を示す。
Note that 20 indicates a heat shrink tube, and conductive case 19
This is provided to electrically insulate the side surface of the device from the outside. Further, 21 indicates a sealing resin.

本実施例は、上記した導電板13.14に特徴を有する
ものである。すなわち、導電板13.14は、例えばポ
リイソブチレンやブチルゴムのような比較的軟質の合成
樹脂またはゴム中に、導電性の炭素系材料としての、カ
ーボンブラックや黒鉛等の粉末を混練してなるシートに
より構成されている。さらに、このシートの表面には、
カーボンブラックや黒鉛粉末等の導電性の炭素系粉末が
、吹付けまたは擦込み等により、表面に付着されている
This embodiment is characterized by the conductive plates 13 and 14 described above. That is, the conductive plates 13 and 14 are sheets made by kneading powder such as carbon black or graphite as a conductive carbon-based material into a relatively soft synthetic resin or rubber such as polyisobutylene or butyl rubber. It is made up of. Furthermore, on the surface of this sheet,
Conductive carbon-based powder such as carbon black or graphite powder is attached to the surface by spraying or rubbing.

なお、炭素系粉末の付着は、樹脂シートまたはゴムシー
トの切断の前に行ってもよく、あるいは切断後に行って
もよい、すなわち、図示の形状の導電板13.14を用
意し、しかる後吹付けや擦込み等により炭素系粉末を付
着させてもよく、あるいは導電板を構成するための比較
的大きなシートの表面に吹付けあるいは擦込み等により
付着させておき、しかる後に導電板13.14の形状に
打抜いてもよい。
The carbon-based powder may be attached before or after cutting the resin sheet or rubber sheet. In other words, a conductive plate 13, 14 having the shape shown in the figure is prepared, and then blown. Carbon-based powder may be attached by spraying, rubbing, etc., or it may be attached by spraying, rubbing, etc. to the surface of a relatively large sheet for forming the conductive plate, and then the conductive plate 13.14 It may also be punched out in the shape of

本実施例では、導電板の表面に導電性炭素系粉末が付着
されているので、高温環境下におかれた場合に導電板1
3.14の表面層に露出していた炭素系材料が樹脂やゴ
ムの軟化により内部に埋没してとしても、表面に付着さ
れている炭素系粉末により導電路が確保される。よって
、導電板13゜14と、電極板18や導電性ケース19
との接触部分の抵抗の増大が防止される。
In this example, since conductive carbon powder is attached to the surface of the conductive plate, the conductive plate
Even if the carbonaceous material exposed on the surface layer 3.14 is buried inside due to softening of the resin or rubber, a conductive path is ensured by the carbonaceous powder attached to the surface. Therefore, the conductive plates 13 and 14, the electrode plate 18 and the conductive case 19
This prevents an increase in resistance at the contact portion.

以下、具体的な実施例につき説明する。Hereinafter, specific examples will be described.

上記した電気二重層コンデンサ素子1として、直径9.
0■、厚み0.8mのものを6偏積層して積層体11を
得、熱収縮チューブ12により一体化した。
The electric double layer capacitor element 1 described above has a diameter of 9.
A laminate 11 was obtained by laminating 6 pieces of laminate 11 having a thickness of 0.0 mm and a thickness of 0.8 m, which were then integrated using a heat shrink tube 12.

次に、後述する実施例1.実施例2.実施例3並びに比
較例1.比較例2および比較例3を構成するために種々
の導電板を用意し、各導電板間に積層体11を挟持した
状態で導電性ケース19内に収納した。
Next, Example 1, which will be described later. Example 2. Example 3 and Comparative Example 1. Various conductive plates were prepared to constitute Comparative Examples 2 and 3, and were housed in a conductive case 19 with the laminate 11 sandwiched between each conductive plate.

次に、電極部15を載置し、内部を上方から加圧した状
態で導電性ケース19の開口部をかしめ付け、紫外線硬
化型の封止樹脂21により封止して、定格電圧5.5L
容量0.047F17)電気二重層コンデンサを作成し
た。
Next, the electrode part 15 is placed, the opening of the conductive case 19 is caulked with the inside pressurized from above, and the opening of the conductive case 19 is sealed with an ultraviolet curable sealing resin 21, and the rated voltage is 5.5L.
An electric double layer capacitor with a capacity of 0.047F17) was created.

なお、実施例および比較例を作成するための各種導電板
は、厚み0.2踵の下記の各種のシートを、直径9■の
円板状に打抜くことにより作成した。
Incidentally, various conductive plates for producing Examples and Comparative Examples were produced by punching out the following various sheets having a thickness of 0.2 mm into a disc shape with a diameter of 9 cm.

実施例および比較例の導電板を作成するのに用いたシー
トの構造; 実施例1;ポリイソブチレンに黒鉛およびカーボンブラ
ックを充填剤として混入・混練し、カレンダ成形した後
に鱗片状の黒鉛粉末を両面に擦込み、実施例1の導電板
を構成するシートを得た。
Structure of the sheet used to create the conductive plates of Examples and Comparative Examples; Example 1: Polyisobutylene was mixed and kneaded with graphite and carbon black as fillers, and after calendering, flaky graphite powder was coated on both sides. A sheet constituting the conductive plate of Example 1 was obtained.

実Mi例2;ブチルゴム・コンパウンドに、黒鉛および
カーボンブラックを充填剤として混入・混練し、カレン
ダ成形した後に鱗片状黒鉛粉末を両面に擦込んだ状態で
加硫処理し、実施例2の導電板を構成するためのシート
を得た。
Practical Mi Example 2: Graphite and carbon black were mixed and kneaded as fillers into a butyl rubber compound, calender molded, and then vulcanized with flaky graphite powder rubbed on both sides to produce the conductive plate of Example 2. I got the sheet to compose.

実施例3;ブチルゴム・コンパウンドに!鉛およびカー
ボンブラックを充填剤として混入・混練し、カレンダ成
形した後に加硫処理を施した。しかる後に、得られたシ
ートの両面に鱗片状の黒鉛粉末を両面に擦込んだ。
Example 3: For butyl rubber compound! Lead and carbon black were mixed and kneaded as fillers, calender molded, and then vulcanized. Thereafter, flaky graphite powder was rubbed onto both sides of the obtained sheet.

比較例1; 実施例1において、カレンダ成形した段階で留め、鱗片
状の黒鉛粉末を擦込まない状態のシートを用意した。
Comparative Example 1; In Example 1, a sheet was prepared in which the sheet was fixed at the stage of calender molding and the scale-like graphite powder was not rubbed into it.

比較例2; 実施例2においてカレンダ成形した段階で留めて得られ
たシートを、比較例2の導電板を構成するために用意し
た。
Comparative Example 2: A sheet obtained by fixing the sheet at the stage of calender molding in Example 2 was prepared to constitute a conductive plate of Comparative Example 2.

比較例3; 比較例3としては、特にシートを用意しなかった。すな
わち、比較例3は第1図の構造において導電板13.1
4を省略した構造を有するものである。
Comparative Example 3; In Comparative Example 3, no particular sheet was prepared. That is, in Comparative Example 3, the conductive plate 13.1 in the structure shown in FIG.
4 is omitted.

上記した各導電板を用いて構成された電気二重層コンデ
ンサにつき、85°C,500時間の高温放置試験を行
った。この高温放置試験の前後における等個直列抵抗(
IKHz、1mAの電流を印加した場合の抵抗値)を第
1表に示す。
Electric double layer capacitors constructed using each of the conductive plates described above were subjected to a high temperature storage test at 85° C. for 500 hours. Equal series resistance before and after this high temperature storage test (
Table 1 shows the resistance values when applying a current of IKHz and 1 mA.

また、参考のために、各導電板を使用したシートの体積
固有抵抗を、日本ゴム協会標準規格 5RIS−230
1r導電性ゴムおよびプラスチックの体積抵抗率の試験
方法」に従って測定した結果を、第1表に併せて示す。
Also, for reference, the volume resistivity of sheets using each conductive plate is determined by the Japan Rubber Association standard 5RIS-230.
Table 1 also shows the results of measurement according to 1R Test Method for Volume Resistivity of Conductive Rubber and Plastics.

第   1   表 第1表から明らかなように、実施例1〜3では、高温放
置試験前のESRが低いだけでなく、高温放置試験後に
おけるESRの上昇も小さくなっていることがわかる。
Table 1 As is clear from Table 1, in Examples 1 to 3, not only the ESR before the high temperature storage test was low, but also the increase in ESR after the high temperature storage test was small.

これに対して、比較例1および2では、高温放置試験前
と後においてESRがかなり上昇していることがわかる
On the other hand, in Comparative Examples 1 and 2, it can be seen that the ESR significantly increases before and after the high temperature storage test.

また、導電板を設は久かった比較例3では、高温放置試
験前後ではESHの値はさほど変わらなかったが、もと
もとのESRが非常に高く、従って電気二重層コンデン
サ素子と電極板や導電性ケースとの間の接触抵抗が非常
に高いことがわかる。
In addition, in Comparative Example 3, in which the conductive plate was installed for a long time, the ESH value did not change much before and after the high temperature storage test, but the original ESR was very high, and therefore the electric double layer capacitor element and the electrode plate and conductive It can be seen that the contact resistance with the case is extremely high.

よって、実施例1〜3によれば、通常の環境下における
ESRを低め得るだけでなく、高温放置されてもESR
がさほど変化しないことがわかる。
Therefore, according to Examples 1 to 3, not only can the ESR be lowered under normal environments, but also the ESR can be lowered even when left at high temperatures.
It can be seen that there is not much change.

なお、実施例1〜3の導電板には、鱗片状の黒鉛粉末が
表面に擦込まれて付着されていたが、カーボンブラック
を用いても同様の効果を得ることができる。もっとも、
黒鉛粉末の方が一次粒径が大きいため、作業性に優れる
In addition, although the scale-like graphite powder was rubbed into the surface and adhered to the conductive plates of Examples 1 to 3, the same effect can be obtained by using carbon black. However,
Graphite powder has a larger primary particle size, so it is easier to work with.

〔発明の効果〕〔Effect of the invention〕

以上のように、本発明では、導電板の表面に炭素系粉末
が付着されているので、導電板内の炭素系材料が高温放
置された場合に合成樹脂またはゴムからなるシート内に
埋設したとしても、表面に付着された炭素系粉末が、接
触配置される他の導体との間の接触抵抗の増大を効果的
に防止する。
As described above, in the present invention, since the carbon-based powder is attached to the surface of the conductive plate, if the carbon-based material in the conductive plate is left at high temperature, it may be buried in a sheet made of synthetic resin or rubber. Also, the carbon-based powder attached to the surface effectively prevents an increase in contact resistance with other conductors placed in contact with each other.

よって、高温環境の下におかれてもESRがほとんど上
昇しない、耐環境特性に優れた安定な電気二重層コンデ
ンサを実現することが可能となる。
Therefore, it is possible to realize a stable electric double layer capacitor with excellent environmental resistance and whose ESR hardly increases even when placed in a high-temperature environment.

また、導電板は、通常、接触抵抗を下げるために設けら
れているものであるため、比較的軟質の合成樹脂やゴム
により構成されている。このような軟質材料は、粘着性
を有するので、ロール状に巻回された場合、層間で粘着
し、ロールからの引出しが困難となりがちであった。そ
こで、シート表面にエンボス加工や布目加工を施して凹
凸を形成したり、離型紙を間に挟んで巻回していた。
Further, since the conductive plate is usually provided to reduce contact resistance, it is made of relatively soft synthetic resin or rubber. Such soft materials have adhesive properties, so when wound into a roll, they tend to stick between layers, making it difficult to pull them out from the roll. Therefore, the surface of the sheet was embossed or textured to form irregularities, or the sheet was wound with release paper in between.

しかしながら、本発明によれば、炭素系材料が表面に付
着されているので、該炭素系材料の離型作用により、ロ
ールからの引出しが容易となる。
However, according to the present invention, since the carbon-based material is attached to the surface, the release action of the carbon-based material makes it easy to pull out from the roll.

従って、凹凸の形成や離型紙の挿入を省略することがで
きるので、電気二重層コンデンサの製造工程の簡略化お
よび製造装置の簡略化をも期待することができる。
Therefore, since the formation of irregularities and the insertion of release paper can be omitted, it is possible to expect simplification of the manufacturing process and manufacturing equipment of electric double layer capacitors.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明が適用される電気二重層コンデンサの一
例を示す断面図、第2図は第1図電気二重層コンデンサ
に用いられる電気二重層コンデンサ素子を示す断面図で
ある。 図において、1は電気二重層コンデンサ素子、11は積
層体、13.14は導電板、19は導電性ケースを示す
FIG. 1 is a sectional view showing an example of an electric double layer capacitor to which the present invention is applied, and FIG. 2 is a sectional view showing an electric double layer capacitor element used in the electric double layer capacitor shown in FIG. In the figure, 1 is an electric double layer capacitor element, 11 is a laminate, 13 and 14 are conductive plates, and 19 is a conductive case.

Claims (1)

【特許請求の範囲】 複数個の電気二重層コンデンサ素子を重ねてなる積層体
と、 前記積層体を積層方向外側から挟持するように配置され
ており、かつ炭素系材料を含むことにより導電性が付与
された樹脂シートまたはゴムシートからなる一対の導電
板と、 前記導電板で挟持された積層体を収納する導電性ケース
とを備える電気二重層コンデンサにおいて、 前記導電板の表面に炭素系粉末が付着されていることを
特徴とする、電気二重層コンデンサ。
[Scope of Claims] A laminate formed by stacking a plurality of electric double layer capacitor elements, the laminate being arranged to sandwich the laminate from the outside in the stacking direction, and containing a carbon-based material to provide electrical conductivity. An electric double layer capacitor comprising a pair of conductive plates made of a resin sheet or a rubber sheet, and a conductive case housing a laminate sandwiched between the conductive plates, wherein carbon-based powder is coated on the surface of the conductive plates. An electric double layer capacitor characterized in that:
JP63121351A 1988-05-18 1988-05-18 Electric double layer capacitor Pending JPH01290216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63121351A JPH01290216A (en) 1988-05-18 1988-05-18 Electric double layer capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63121351A JPH01290216A (en) 1988-05-18 1988-05-18 Electric double layer capacitor

Publications (1)

Publication Number Publication Date
JPH01290216A true JPH01290216A (en) 1989-11-22

Family

ID=14809125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63121351A Pending JPH01290216A (en) 1988-05-18 1988-05-18 Electric double layer capacitor

Country Status (1)

Country Link
JP (1) JPH01290216A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115378A (en) * 1990-02-09 1992-05-19 Isuzu Motors Limited Electric double layer capacitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115378A (en) * 1990-02-09 1992-05-19 Isuzu Motors Limited Electric double layer capacitor

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