JP2003059783A - Electric double layer capacitor - Google Patents

Electric double layer capacitor

Info

Publication number
JP2003059783A
JP2003059783A JP2001250059A JP2001250059A JP2003059783A JP 2003059783 A JP2003059783 A JP 2003059783A JP 2001250059 A JP2001250059 A JP 2001250059A JP 2001250059 A JP2001250059 A JP 2001250059A JP 2003059783 A JP2003059783 A JP 2003059783A
Authority
JP
Japan
Prior art keywords
capacitor element
double layer
capacitor
electric double
outer case
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
JP2001250059A
Other languages
Japanese (ja)
Inventor
Tetsujiro Ota
哲二郎 太田
Akira Kawai
明良 川井
Megumi Hiramoto
恵 平本
Shigeyoshi Iwamoto
茂芳 岩元
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2001250059A priority Critical patent/JP2003059783A/en
Publication of JP2003059783A publication Critical patent/JP2003059783A/en
Pending legal-status Critical Current

Links

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

Landscapes

  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an electric double layer capacitor in which the internal resistance of the capacitor can be decreased while reducing the size and decreasing the number of components. SOLUTION: A pair of planar electrodes sandwiching a separator are wound such that the end faces of respective electrodes project in the opposite directions thus producing capacitor elements 1a, 1b and 1c. Connecting plates 5a, 5b, 5c and 5d are connected with the end face of respective electrodes of the capacitor elements 1a, 1b and 1c which are then contained, along with electrolyte, in a plurality of capacitor element containing sections 6a, 6b and 6c separated in an outer case 8 by means of barrier wall parts 7a and 7b, respectively. External connection terminals 11b and 11c of the connecting plates 5b and 5c are connected such that the capacitor elements 1a, 1b and 1c are connected in series.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は各種電子機器に使用
される電気二重層コンデンサに関するものである。
TECHNICAL FIELD The present invention relates to an electric double layer capacitor used in various electronic devices.

【0002】[0002]

【従来の技術】従来のこの種の電気二重層コンデンサに
ついて図面を用いて説明する。
2. Description of the Related Art A conventional electric double layer capacitor of this type will be described with reference to the drawings.

【0003】図11は従来の電気二重層コンデンサの構
成を示す断面図、図12は同電気二重層コンデンサに使
用されるコンデンサ素子の構成を示す展開斜視図であ
る。
FIG. 11 is a sectional view showing the structure of a conventional electric double layer capacitor, and FIG. 12 is a developed perspective view showing the structure of a capacitor element used in the electric double layer capacitor.

【0004】図12において、37aと37bは平板状
の一対の電極、38a〜38dは上記平板状の一対の電
極37a,37bに接続されたリード板、39はセパレ
ータであり、このようにリード板38a〜38dが接続
された平板状の一対の電極37a,37bをその間にセ
パレータ39を介在させた状態で巻回することによりコ
ンデンサ素子40が構成されている。
In FIG. 12, 37a and 37b are a pair of flat electrodes, 38a to 38d are lead plates connected to the pair of flat electrodes 37a and 37b, and 39 is a separator. A capacitor element 40 is formed by winding a pair of flat plate-shaped electrodes 37a and 37b to which 38a to 38d are connected with a separator 39 interposed therebetween.

【0005】また、図11において、40は上記リード
板38a〜38dが接続されたコンデンサ素子、42は
このコンデンサ素子40が収納された有底筒状のケー
ス、43はこのケース42の内底面に配設されたコンデ
ンサ素子40の位置決め部材、44は上記ケース42の
開口部を封止する端子板、45はこの端子板44に装着
され上記リード板38a〜38dと接続される外部接続
用の端子、46は上記端子板44に装着された圧力弁、
47はOリングであり、従来の電気二重層コンデンサは
このように構成されたものであった。
In FIG. 11, 40 is a capacitor element to which the lead plates 38a to 38d are connected, 42 is a cylindrical case having a bottom in which the capacitor element 40 is housed, and 43 is an inner bottom surface of the case 42. A positioning member for the capacitor element 40 disposed, 44 is a terminal plate for sealing the opening of the case 42, and 45 is a terminal for external connection which is mounted on the terminal plate 44 and connected to the lead plates 38a to 38d. , 46 are pressure valves mounted on the terminal board 44,
Reference numeral 47 is an O-ring, and the conventional electric double layer capacitor was constructed in this way.

【0006】[0006]

【発明が解決しようとする課題】しかしながら上記従来
の構成の電気二重層コンデンサでは、コンデンサの低抵
抗化、小形化に関する市場要求が近年さらに高まってい
る状況の中で、コンデンサの内部抵抗を下げようとした
場合、その手段として、リード板38a〜38dの枚数
を増す方法、リード板38a〜38dの接続位置を最適
化する方法等がある。
However, in the electric double layer capacitor having the above-mentioned conventional structure, the internal resistance of the capacitor should be lowered under the situation that the market demand for the resistance reduction and miniaturization of the capacitor is further increasing in recent years. In that case, as a means therefor, there are a method of increasing the number of lead plates 38a to 38d, a method of optimizing the connection position of the lead plates 38a to 38d, and the like.

【0007】ここで、前者におけるリード板38a〜3
8dの枚数を増す方法においては、(数1)に従ってリ
ード板38a〜38dの枚数を増加させるに従いコンデ
ンサ素子40を構成する一対の電極37a,37bの抵
抗は低減できるが、上記リード板38a〜38dを外部
接続用の端子45に接続する場合は、端子45のリード
板38a〜38dの接続部に複数枚のリード板38a〜
38dを積層して接続しなければならないため、端子4
5のリード接続部に接続できるリード板38a〜38d
の接続枚数はケース42内の寸法、接続作業性、信頼性
等の問題から限界があり、リード板38a〜38dの枚
数はむやみに増加させられないという課題があった。
Here, the lead plates 38a to 3 in the former case are used.
In the method of increasing the number of 8d sheets, the resistance of the pair of electrodes 37a and 37b forming the capacitor element 40 can be reduced as the number of lead plates 38a to 38d is increased according to (Equation 1). Is connected to the terminal 45 for external connection, a plurality of lead plates 38a to 38d are connected to the connecting portions of the lead plates 38a to 38d of the terminal 45.
Since 38d must be stacked and connected, terminal 4
Lead plates 38a to 38d that can be connected to the lead connecting portion of FIG.
There is a limit to the number of connected sheets due to problems such as the size of the case 42, connection workability, and reliability, and the number of lead plates 38a to 38d cannot be increased unnecessarily.

【0008】[0008]

【数1】 [Equation 1]

【0009】また、後者のリード板38a〜38dの接
続位置を最適化する方法においては、例えば、複数枚接
続されたリード板38a〜38dの距離を同じにし、か
つ電極37a,37bの端部とこの電極37a,37b
の端部に最も近いリード板38a,38cとの距離を複
数枚接続されたリード板38b,38dとの距離の1/
2にした場合は、コンデンサ素子40を構成する一対の
電極37a,37bの抵抗値は理想的なものとなるが、
それらを実際に巻回した場合においては、一対の電極3
7a,37bのそれぞれから引き出された複数枚のリー
ド板38a〜38dは中心から外側にいくにしたがって
リード板38a〜38dの位置がずれるものであった。
したがって、後者の方法においては、一対の電極37
a,37bの抵抗値は理想的なものより増大するという
課題を有するものであった。
In the latter method of optimizing the connecting positions of the lead plates 38a to 38d, for example, the lead plates 38a to 38d connected to each other are made to have the same distance, and the ends of the electrodes 37a and 37b are the same. These electrodes 37a, 37b
The distance from the lead plates 38a, 38c closest to the end of the
When the value is 2, the resistance values of the pair of electrodes 37a and 37b forming the capacitor element 40 are ideal,
When they are actually wound, a pair of electrodes 3
The plurality of lead plates 38a to 38d drawn out from each of 7a and 37b are such that the positions of the lead plates 38a to 38d are displaced from the center toward the outside.
Therefore, in the latter method, the pair of electrodes 37
There was a problem that the resistance values of a and 37b were larger than the ideal ones.

【0010】また、電気二重層コンデンサの低抵抗化お
よび耐圧を向上させる目的で、例えば特開2000−4
9057公報に開示された技術内容では、複数の陽極端
子が配置された陽極側の封口体と、複数の陰極端子が配
置された陰極側の封口体とにより両端の開口部がそれぞ
れ密封されている筒状の金属ケース内にコンデンサ素子
が収納された電気二重層コンデンサを複数個直列に接続
した構成にすることにより、高耐圧で等価直列抵抗を低
くすることができるということが記載されているが、構
成が複雑で部品点数が多いという課題を有している。
Further, for the purpose of lowering the resistance and improving the withstand voltage of the electric double layer capacitor, for example, Japanese Patent Laid-Open No. 2000-4
According to the technical content disclosed in the publication 9057, the openings at both ends are sealed by an anode-side sealing body in which a plurality of anode terminals are arranged and a cathode-side sealing body in which a plurality of cathode terminals are arranged. It is described that the equivalent series resistance can be lowered with a high breakdown voltage by configuring a configuration in which a plurality of electric double layer capacitors each having a capacitor element housed in a cylindrical metal case are connected in series. However, there is a problem that the structure is complicated and the number of parts is large.

【0011】本発明はこのような従来の課題を解決し、
コンデンサの内部抵抗と耐圧を向上させ、かつ小形化と
部品点数の削減が可能な電気二重層コンデンサを提供す
ることを目的とするものである。
The present invention solves these conventional problems,
It is an object of the present invention to provide an electric double layer capacitor capable of improving the internal resistance and withstand voltage of the capacitor and downsizing and reducing the number of parts.

【0012】[0012]

【課題を解決するための手段】上記課題を解決するため
に本発明の請求項1に記載の発明は、平板状の一対の電
極をその間にセパレータを介在させかつ各電極の端面が
互いに逆方向に突出するようにして巻回することにより
構成されたコンデンサ素子と、外部接続用の端子を備え
て上記コンデンサ素子の各電極端面に夫々接合された接
続板と、この接続板が接合されたコンデンサ素子を駆動
用電解液と共に収納するコンデンサ素子収納部が隔壁部
を介して複数個独立して設けられた上面開放の外装ケー
スと、上記コンデンサ素子収納部に収納されて隔壁部を
介して隣接するコンデンサ素子の接続板に設けられた外
部接続用の端子を夫々接続して各コンデンサ素子を直列
接続した状態で上記外装ケースの開口部を封止した封止
板からなる構成とするもので、コンデンサ素子の内部抵
抗を低くし、かつ高耐圧で信頼性の高い電気二重層コン
デンサを得ることができるという作用を有する。
In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention is such that a pair of flat-plate electrodes have a separator interposed therebetween and the end faces of the respective electrodes are in opposite directions. Capacitor element formed by winding so as to project to, a connecting plate provided with terminals for external connection and being joined to each electrode end surface of the capacitor element, and a capacitor to which this connecting plate is joined A plurality of capacitor element accommodating portions for accommodating the elements together with the driving electrolyte are independently provided through a partition wall portion, and an outer case having an open upper surface, which is accommodated in the capacitor element accommodating portion and adjoins through the partition wall portion. A structure comprising a sealing plate that seals the opening of the outer case in a state where the external connection terminals provided on the connection plate of the capacitor element are connected to each other and the respective capacitor elements are connected in series. Shall in has the effect that it is possible to lower the internal resistance of the capacitor element, and obtain a high electric double layer capacitor reliable high breakdown voltage.

【0013】請求項2に記載の発明は、請求項1に記載
の発明において、接続板のコンデンサ素子の電極端面と
の接合面に凹凸部を設けた構成とするもので、コンデン
サ素子の電極の端面と接続板とが確実に接合されるの
で、コンデンサ素子の電極の体積抵抗を減少させること
ができ、しかも小型化と部品点数の削減を図ることがで
きるという作用を有する。
According to a second aspect of the present invention, in the first aspect of the present invention, an uneven portion is provided on the joint surface of the connecting plate with the electrode end surface of the capacitor element. Since the end face and the connection plate are securely joined, the volume resistance of the electrode of the capacitor element can be reduced, and further, the size and the number of parts can be reduced.

【0014】請求項3に記載の発明は、請求項1に記載
の発明において、外部接続用の端子を備えてコンデンサ
素子の電極端面に夫々接合される接続板のうち、外装ケ
ースに設けたコンデンサ素子収納部に収納されて隔壁部
を介して隣接する2枚の接続板を1組としてこれらの接
続板に設けられた各外部接続用の端子を一体化した構成
とするもので、従来と比較して部品点数と生産工程数の
削減ができ、生産性の向上を図ることができるという作
用を有する。
According to a third aspect of the present invention, in the first aspect of the invention, the capacitor provided in the outer case is one of the connection plates that are provided with terminals for external connection and are respectively joined to the electrode end faces of the capacitor element. This is a structure in which two connection plates housed in the element storage unit and adjacent to each other via the partition wall are set as one set, and terminals for external connection provided on these connection plates are integrated, which is compared with the conventional one. As a result, the number of parts and the number of production steps can be reduced, and the productivity can be improved.

【0015】請求項4に記載の発明は、請求項1に記載
の発明において、外装ケースの底面部分を半円形状また
は多角形状とした構成とするもので、外装ケース内の空
隙率を最小限にすることができるので、信頼性の向上を
図ることができるという作用を有する。
According to a fourth aspect of the present invention, in the first aspect of the invention, the bottom portion of the outer case has a semicircular or polygonal shape, and the porosity in the outer case is minimized. Therefore, there is an effect that the reliability can be improved.

【0016】請求項5に記載の発明は、請求項1に記載
の発明において、コンデンサ素子を収納した外装ケース
の内部圧力が所定の圧力以上になると圧力を外部に逃が
すための自己復帰型の圧力調整弁を封止板に設けた構成
としたもので、外装ケース内部で発生したガスを外部へ
放出して外装ケース内部の圧力の上昇を防ぐことがで
き、また動作後、圧力調整弁は作動前の状態に復帰して
外装ケース内部の気密性を保持することができるため、
外装ケース内部のガス発生による圧力の上昇においても
電気二重層コンデンサの外観に異常をきたすことなく、
その特性を維持することができるという作用を有する。
According to a fifth aspect of the present invention, in the first aspect of the invention, when the internal pressure of the outer case accommodating the capacitor element exceeds a predetermined pressure, the pressure is a self-reset type pressure for releasing the pressure to the outside. The control valve is provided on the sealing plate, so that the gas generated inside the outer case can be released to the outside to prevent the pressure inside the outer case from rising, and the pressure control valve is activated after the operation. Since it is possible to return to the previous state and maintain the airtightness inside the outer case,
Even if the pressure rises due to the generation of gas inside the outer case, the appearance of the electric double layer capacitor is not abnormal.
It has the effect of maintaining its characteristics.

【0017】請求項6に記載の発明は、請求項1に記載
の発明において、外装ケースが有機樹脂または金属薄板
に有機樹脂を貼り合わせた複合材のいずれかからなる構
成とするものであり、有機樹脂を用いたものは外装ケー
スの加工性の自由度が有り、また金属薄板に有機樹脂を
貼り合わせた複合材は外装ケースから電解液が透過する
のを防ぐことができるという作用を有する。
According to a sixth aspect of the present invention, in the first aspect of the present invention, the outer case is made of an organic resin or a composite material obtained by laminating an organic resin on a thin metal plate. The one using the organic resin has flexibility in the workability of the outer case, and the composite material in which the organic resin is bonded to the metal thin plate has an effect that the electrolyte solution can be prevented from permeating from the outer case.

【0018】請求項7に記載の発明は、請求項1に記載
の発明において、外装ケースの内底部および/または封
止板内面にコンデンサ素子を固定する固定部材を配設し
た構成とするものであり、コンデンサ素子を外装ケース
内に固定することができるので、耐振動性や耐衝撃性を
向上させることができるという作用を有する。
According to a seventh aspect of the invention, in the first aspect of the invention, a fixing member for fixing the capacitor element is arranged on the inner bottom portion of the outer case and / or the inner surface of the sealing plate. Since the capacitor element can be fixed in the outer case, there is an effect that vibration resistance and impact resistance can be improved.

【0019】請求項8に記載の発明は、請求項1に記載
の発明において、平板状の一対の電極として、金属箔も
しくは導電性高分子からなる集電体上に集電体の一端に
集電体の露出部分が形成されるように活性炭と結着剤と
導電剤の混合物からなる分極性電極層を形成してなる電
極を用いた構成とするものであり、分極性電極層の界面
で形成される電気二重層を利用した電気二重層コンデン
サとして使用できるものであり、大容量でかつ低抵抗が
必要とされるモータ駆動用の二次電源としての利用が可
能となり、電気二重層コンデンサの内部抵抗の減少によ
り大電流で充電もしくは放電しても、充放電における電
圧の急激なダウン部分あるいはアップ部分の電圧範囲を
小さくすることができるため、コンデンサのより大電流
での充放電ができるという作用を有する。
According to an eighth aspect of the present invention, in the first aspect of the present invention, a pair of flat electrodes is provided on one end of the current collector on a current collector made of a metal foil or a conductive polymer. The electrode is formed by forming a polarizable electrode layer composed of a mixture of activated carbon, a binder and a conductive agent so that an exposed portion of the electric body is formed, and at the interface of the polarizable electrode layer. It can be used as an electric double layer capacitor that uses the formed electric double layer, and can be used as a secondary power source for driving a motor that requires a large capacity and low resistance. Even if the battery is charged or discharged with a large current due to the reduction of the internal resistance, the voltage range of the rapid down or up part of the voltage during charging / discharging can be reduced, so the capacitor can be charged / discharged with a larger current. It has the effect of.

【0020】請求項9に記載の発明は、請求項1に記載
の発明において、平板状の一対の電極の間に介在させる
セパレータと、このセパレータに含浸する電解液に代
え、機能性高分子もしくはセパレータと機能性高分子か
らなる複合部材を用いた構成とするものであり、機能性
高分子コンデンサとして使用できるものであり、従来の
巻回タイプの機能性高分子コンデンサより低インピーダ
ンスのコンデンサを提供でき、電解液を使用しないため
にドライアップが要因の寿命劣化モードがなく、コンデ
ンサの長寿命化を図ることができるという作用を有す
る。
According to a ninth aspect of the present invention, in the first aspect of the present invention, a functional polymer or a functional polymer or a separator interposed between a pair of flat-plate electrodes and an electrolytic solution impregnated in the separator is used. This is a structure that uses a composite member consisting of a separator and a functional polymer, and can be used as a functional polymer capacitor, providing a capacitor with lower impedance than conventional wound-type functional polymer capacitors. Since there is no electrolytic solution, there is no life deterioration mode due to dry-up, and the life of the capacitor can be extended.

【0021】[0021]

【発明の実施の形態】以下、本発明の実施の形態を添付
図面にもとづいて説明する。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

【0022】(実施の形態1)図1は本発明の実施の形
態1による電気二重層コンデンサの構成を示す断面図、
図2(a),(b)は同電気二重層コンデンサに使用さ
れるコンデンサ素子の展開斜視図と斜視図である。図1
において、1a,1b,1cはコンデンサ素子で電解液
(図示せず)が含浸されている。2a,2bはこのコン
デンサ素子1aの集電体の露出部分、5a,5b,5
c,5dはコンデンサ素子1a,1b,1cの各集電体
の露出部分の端面と接続される外部接続用の端子11
a,11b,11c,11dを備えた接続板、6a,6
b,6cは外装ケース8の内部に設けられた隔壁部7
a,7bにより分離されたコンデンサ素子収納部、9は
外装ケース8を封止する封止板、10は圧力調整弁であ
る。
(Embodiment 1) FIG. 1 is a sectional view showing the structure of an electric double layer capacitor according to Embodiment 1 of the present invention.
2A and 2B are a developed perspective view and a perspective view of a capacitor element used in the electric double layer capacitor. Figure 1
In the above, 1a, 1b and 1c are capacitor elements and are impregnated with an electrolytic solution (not shown). 2a and 2b are exposed portions of the current collector of the capacitor element 1a, 5a, 5b and 5
c and 5d are terminals 11 for external connection which are connected to the end faces of the exposed portions of the current collectors of the capacitor elements 1a, 1b and 1c.
connection plate provided with a, 11b, 11c, 11d, 6a, 6
b and 6c are partition walls 7 provided inside the outer case 8.
A capacitor element housing portion separated by a and 7b, 9 is a sealing plate for sealing the outer case 8, and 10 is a pressure adjusting valve.

【0023】図2(a)は上記コンデンサ素子1aの構
成を示す展開斜視図(コンデンサ素子1b,1cも同
じ)で、2は一対の電極であり、この一対の電極2は集
電体の露出部分2a,2bが互いに逆方向に突出するよ
うにして、活性炭と結着剤と導電性の混合物からなる分
極性電極層3a,3bを形成して構成され、このように
構成された一対の電極2間にセパレータ4を介在させた
状態で巻回することにより、同図2(b)に示すような
コンデンサ素子1aが構成されている。
FIG. 2 (a) is an exploded perspective view showing the structure of the capacitor element 1a (the same applies to the capacitor elements 1b and 1c), 2 is a pair of electrodes, and the pair of electrodes 2 is an exposed collector. The polarizable electrode layers 3a and 3b made of a mixture of activated carbon, a binder and a conductive material are formed so that the portions 2a and 2b project in mutually opposite directions, and a pair of electrodes thus configured. By winding with the separator 4 interposed between the two, a capacitor element 1a as shown in FIG. 2B is formed.

【0024】このように本発明の実施の形態1による電
気二重層コンデンサは、コンデンサ素子1aの一方の集
電体の露出部分2aの端面に外部接続用の端子11aを
備えた接続板5aを電気的に接合し、かつ上記コンデン
サ素子1aの他方の集電体の露出部分2bの端面に接続
板5bを電気的に接合すると共に、このコンデンサ素子
1aに電解液(図示せず)を含浸して、外装ケース8の
内部に隔壁板7aにより分離されたコンデンサ素子収納
部6a内に収納し、このコンデンサ素子収納部6a以外
のコンデンサ素子収納部6b,6c内にも上記コンデン
サ素子1aと同様のコンデンサ素子1b,1cを夫々収
納して、各コンデンサ素子1a,1b,1cが直列接続
になるように接続板5b,5cの外部接続用の端子11
b,11cを接合して、外装ケース8の開口部を封止板
9により蓋をして、その境界部を熱溶着して封止した構
成とするもので、この構成によれば、部品点数をより削
減することができるとともに、コンデンサ素子1a,1
b,1cの内部抵抗を低くし、かつ高耐圧の信頼性の高
い電気二重層コンデンサを得ることができるものであ
る。
As described above, in the electric double layer capacitor according to the first embodiment of the present invention, the connecting plate 5a having the terminal 11a for external connection is electrically connected to the end face of the exposed portion 2a of the one current collector of the capacitor element 1a. And the connection plate 5b is electrically connected to the end surface of the exposed portion 2b of the other current collector of the capacitor element 1a, and the capacitor element 1a is impregnated with an electrolytic solution (not shown). , A capacitor element housing portion 6a separated by a partition plate 7a inside the outer case 8, and a capacitor similar to the capacitor element 1a in the capacitor element housing portions 6b and 6c other than the capacitor element housing portion 6a. The terminals 1 for external connection of the connection plates 5b, 5c are arranged so that the elements 1b, 1c are respectively housed therein so that the respective capacitor elements 1a, 1b, 1c are connected in series.
b and 11c are joined together, the opening of the outer case 8 is covered with the sealing plate 9, and the boundary portion thereof is heat-welded and sealed. According to this configuration, the number of parts is increased. Can be further reduced, and the capacitor elements 1a, 1
It is possible to obtain a highly reliable electric double layer capacitor having a low internal resistance of b and 1c and a high breakdown voltage.

【0025】また、本発明の実施の形態1によるコンデ
ンサ素子1aは、平板からなる一対の電極2,2の間に
セパレータ4を介在させて巻回することにより構成さ
れ、かつこのコンデンサ素子1aの集電体の露出部分2
a,2bの端面の各々に接続板5a,5bをレーザー溶
接等で接合して構成したことによって、一対の電極2,
2の体積抵抗を減少させるようにしたものであり、例え
ば(数1)を用いて本発明品と従来品の電極の体積抵抗
を算出して比較してみると、一対の電極のサイズが各々
98mm×3600mmで厚みが0.022mmのアル
ミニウム箔(アルミニウムの抵抗率=0.0265)を
使用した場合、本発明の実施の形態1のコンデンサ素子
1aの集電体の露出部分2a,2bの端面の各々に接続
板5a,5bを接合した状態において、一対の電極を構
成するアルミニウム箔全体の体積抵抗を計算すると約
0.02mΩとなり、一方、同じサイズの一対の電極を
使用して従来のように一対の電極から各々4本のリード
板を等間隔で引き出した場合における一対の電極を構成
するアルミニウム箔全体の体積抵抗を同様に計算すると
約0.46mΩとなる。
Further, the capacitor element 1a according to the first embodiment of the present invention is constructed by winding a pair of flat electrodes 2 and 2 with a separator 4 interposed therebetween, and the capacitor element 1a Exposed part 2 of the current collector
By connecting the connection plates 5a and 5b to the respective end surfaces of a and 2b by laser welding or the like, the pair of electrodes 2,
2 is to reduce the volume resistance. For example, by using (Equation 1) to calculate and compare the volume resistances of the electrodes of the present invention product and the conventional product, the size of the pair of electrodes is When an aluminum foil (aluminum resistivity = 0.0265) having a thickness of 98 mm × 3600 mm and a thickness of 0.022 mm is used, the end faces of the exposed portions 2a and 2b of the current collector of the capacitor element 1a according to the first embodiment of the present invention. In the state where the connection plates 5a and 5b are bonded to each of them, the volume resistance of the entire aluminum foil forming the pair of electrodes is calculated to be about 0.02 mΩ, while using the pair of electrodes of the same size as in the conventional case. Similarly, the volume resistance of the entire aluminum foil forming the pair of electrodes when the four lead plates are drawn out at equal intervals from the pair of electrodes is approximately 0.46 mΩ.

【0026】この結果から明らかなように、本発明の実
施の形態1においては一対の電極の体積抵抗を低減でき
るもので、コンデンサの内部抵抗を減少させることがで
き、これを上記図2(a)の例で示したように、平板状
の一対の電極として、金属箔もしくは導電性高分子から
なる集電体上に、集電体の一端に集電体の露出部分2
a,2bが形成されるように活性炭と結着剤と導電剤の
混合物からなる分極性電極層3a,3bを形成してなる
電極2を用いた構成とすることにより、電気二重層コン
デンサの内部抵抗の減少により大電流で充電もしくは放
電しても充放電における電圧の急激なダウン部分あるい
はアップ部分の電圧範囲を小さくすることができるため
に電気二重層コンデンサのより大電流での充放電ができ
るものである。
As is clear from this result, in the first embodiment of the present invention, the volume resistance of the pair of electrodes can be reduced, and the internal resistance of the capacitor can be reduced. ), As a pair of flat plate-shaped electrodes, on a current collector made of a metal foil or a conductive polymer, one end of the current collector has an exposed portion 2 of the current collector.
By using the electrode 2 formed by forming the polarizable electrode layers 3a and 3b made of a mixture of activated carbon, a binder and a conductive agent so that a and 2b are formed, the inside of the electric double layer capacitor is formed. Even if the battery is charged or discharged with a large current due to the decrease in resistance, the voltage range of the rapid down or up part of the voltage during charging / discharging can be reduced, so charging / discharging with a larger current of the electric double layer capacitor is possible. It is a thing.

【0027】さらに、平板状の一対の電極の間に介在さ
せるセパレータ4とこのセパレータ4に含浸する電解液
に代え、機能性高分子もしくはセパレータと機能性高分
子からなる複合部材を用いた構成とすることにより、従
来の電解液を用いたものより低インピーダンスの電気二
重層コンデンサを提供することができ、かつドライアッ
プが要因の寿命劣化モードがなくなり、電気二重層コン
デンサの長寿命化を図ることができるものである。
Further, in place of the separator 4 interposed between a pair of flat electrodes and the electrolytic solution impregnated in the separator 4, a functional polymer or a composite member composed of a separator and a functional polymer is used. By doing so, it is possible to provide an electric double layer capacitor having a lower impedance than that using a conventional electrolytic solution, and to eliminate the life deterioration mode caused by dry-up, thereby extending the life of the electric double layer capacitor. Is something that can be done.

【0028】なお、図1において、コンデンサ素子1a
の集電体の露出部分2a,2bの端面と接続板5a,5
bを各々接合する手段としてはレーザー溶接および金属
溶射、ろう接、導電性接着剤を用いて接合することがで
きるが、特にレーザー溶接により集電体の露出部分2a
の端面と接続板5aを接合する場合には、接続板5aの
側から集電体の露出部分2aの端面の方向にレーザー光
を照射して接合を行うものであるが、この際、レーザー
光の吸収を高めるために接続板5aの表面を例えば化学
エッジングにて表面処理することによってレーザー光の
吸収を高めることができ、このような処理をした場合、
処理をしない場合と比較してレーザー光の吸収がよいた
めに低エネルギーでの溶接が可能となり、レーザー光の
照射間隔を短くすることができるために生産性を向上さ
せることができるものである。
In FIG. 1, the capacitor element 1a
End faces of exposed portions 2a, 2b of the current collectors of the above and connection plates 5a, 5
Laser welding, metal spraying, brazing, and a conductive adhesive can be used as a means for joining the respective b. The exposed portion 2a of the current collector is particularly formed by laser welding.
When joining the end surface of the connection plate 5a and the connection plate 5a, laser light is irradiated from the side of the connection plate 5a toward the end surface of the exposed portion 2a of the current collector to perform the connection. In order to enhance the absorption of the laser beam, the surface of the connecting plate 5a may be subjected to a surface treatment, for example, by chemical edging to enhance the absorption of the laser light.
Compared to the case where no treatment is performed, the absorption of laser light is good, so welding at low energy is possible, and the irradiation interval of laser light can be shortened, so that productivity can be improved.

【0029】また、外装ケース8および封止板9を金属
薄板に有機樹脂を貼り合わせた複合材の構成とすること
により、外装ケース8からの電解液の透過を防ぐことが
できる効果がある。
Further, by forming the outer case 8 and the sealing plate 9 as a composite material in which a thin metal plate and an organic resin are bonded together, it is possible to prevent the permeation of the electrolytic solution from the outer case 8.

【0030】また、図3に示すように、コンデンサ素子
の上下に固定部材12a,12b,12cを夫々配設し
てコンデンサ素子を固定することにより、耐衝撃性や耐
振動性に耐えることができるという効果がある。
Further, as shown in FIG. 3, fixing members 12a, 12b and 12c are respectively provided above and below the capacitor element to fix the capacitor element, thereby making it possible to withstand shock resistance and vibration resistance. There is an effect.

【0031】(実施の形態2)本実施の形態2は、上記
実施の形態1における外装ケース8の底面部の形状を図
4に示すような半円形状8aにした外装ケース8を用い
たもの、もしくは図5に示すような多角形状8bにした
外装ケース8を用いたものであり、これ以外は実施の形
態1と同様にして電気二重層コンデンサを構成した。
(Second Embodiment) The second embodiment uses the outer case 8 in which the shape of the bottom surface of the outer case 8 in the first embodiment is a semicircular shape 8a as shown in FIG. Alternatively, an outer case 8 having a polygonal shape 8b as shown in FIG. 5 is used, and the electric double layer capacitor is configured in the same manner as in the first embodiment except for this.

【0032】このような構成にすることにより、外装ケ
ース8内の空隙率を最小限にすることができるので、ま
た、コンデンサ素子1a〜1cの固定化を図ることもで
きるので信頼性が向上するという効果がある。
With such a structure, the void ratio in the outer case 8 can be minimized, and the capacitor elements 1a to 1c can be fixed, so that the reliability is improved. There is an effect.

【0033】(実施の形態3)図6は本発明の実施の形
態3におけるコンデンサ素子1aの断面図で、コンデン
サ素子1aの集電体の露出部分2a,2bの付近に導電
性材料31を付着させた後に硬化させ、この部分が平面
になるように加工し、かつ電極2の端面2c,2dが露
出するように構成したもので、この構成によれば、電極
2の集電体の露出部分2a,2bの付近が折れ曲がるこ
となく、しかもコンデンサ素子1aにおいて電極の端面
2c,2dが両端に突出しているため、コンデンサ素子
1aの集電体の露出部分2a,2bの端面と接続板5
a,5bをより確実に接合することができるものであ
る。
(Third Embodiment) FIG. 6 is a sectional view of a capacitor element 1a according to a third embodiment of the present invention, in which a conductive material 31 is attached in the vicinity of exposed portions 2a and 2b of a current collector of the capacitor element 1a. It is then cured and processed so that this portion becomes a flat surface, and the end faces 2c and 2d of the electrode 2 are exposed. According to this configuration, the exposed portion of the current collector of the electrode 2 is exposed. 2a and 2b are not bent, and the end faces 2c and 2d of the electrodes of the capacitor element 1a are projected at both ends. Therefore, the end faces of the exposed portions 2a and 2b of the current collector of the capacitor element 1a and the connecting plate 5 are connected.
It is possible to more reliably join the a and 5b.

【0034】(実施の形態4)図7および図8は本発明
の実施の形態4による電気二重層コンデンサの接続板を
示したものであり、図7において、20は接続板であ
り、20aはコンデンサ素子の端面部と接する側に波状
もしくは***状の凹凸部20bを設けた平面部、20c
は他の接続板と接合するための外部接続用の端子部分で
あり、この構成によれば、コンデンサ素子に対して接続
板20を接合した後の次の工程であるコンデンサ素子へ
の電解液の含浸の際、接続板20の波状もしくは***状
の凹凸部20bが電解液がコンデンサ素子へ浸入する一
つの浸入経路となるものである。
(Fourth Embodiment) FIGS. 7 and 8 show a connecting plate of an electric double layer capacitor according to a fourth embodiment of the present invention. In FIG. 7, 20 is a connecting plate and 20a is a connecting plate. A flat surface portion 20c provided with a wavy or raised uneven portion 20b on the side in contact with the end face portion of the capacitor element.
Is a terminal portion for external connection for joining to another connecting plate. According to this configuration, the electrolytic solution to the capacitor element, which is the next step after joining the connecting plate 20 to the capacitor element, is used. At the time of impregnation, the corrugated or ridged concave-convex portion 20b of the connection plate 20 serves as one infiltration path through which the electrolytic solution infiltrates into the capacitor element.

【0035】また、図8(a)〜(c)は接続板の他の
例を示したもので、図8において、21は接続板であ
り、同図のA−A断面を同図(b)にB−B断面を同図
(c)に示す。このように波状もしくは***状の凹凸部
21aをコンデンサ素子の電極の端面に押し当てて配設
することにより電極の端面が部分的にスエッジ加工さ
れ、このスエッジ加工された箇所に接続板21側からコ
ンデンサ素子の電極2の端面方向にレーザー光を照射し
て接続板21とコンデンサ素子の端面を接合することに
より、確実な接合が可能となる。
8 (a) to 8 (c) show another example of the connecting plate. In FIG. 8, reference numeral 21 denotes the connecting plate, and the cross section A--A of FIG. ) Shows a BB cross section in FIG. By thus disposing the corrugated or ridged concave-convex portion 21a against the end face of the electrode of the capacitor element, the end face of the electrode is partially edge-processed. By irradiating the end face of the electrode 2 of the capacitor element with laser light to join the connecting plate 21 and the end face of the capacitor element, reliable joining becomes possible.

【0036】また、この場合、コンデンサ素子の電極2
の端面に波状もしくは***状の凹凸部21aを押し当て
る際、完全に押し当てずに接続板21の凹凸部21aの
ない平面部がコンデンサ素子の端面に接触しないよう、
接続板21にコンデンサ素子の芯材と接触する突起21
bを設け、接続板21の凹凸部21aのない平面部とコ
ンデンサ素子の端面との間に隙間を設けることにより、
電解液がコンデンサ素子へ浸入する際の一つの浸入経路
となるものである。
In this case, the electrode 2 of the capacitor element
When the corrugated or ridged concave-convex portion 21a is pressed against the end surface of the contact plate, the flat surface of the connecting plate 21 without the concave-convex portion 21a does not contact the end surface of the capacitor element without being pressed completely.
The connection plate 21 has a protrusion 21 that comes into contact with the core of the capacitor element.
b is provided, and a gap is provided between the flat surface portion of the connection plate 21 without the uneven portion 21a and the end surface of the capacitor element,
It serves as one entry route when the electrolytic solution enters the capacitor element.

【0037】また、各コンデンサ素子1a,1b,1c
が直列接続になるようにする場合、外部接続用の端子2
1cを備えた接続板21をコンデンサ素子の各々の電極
の端面に接合するよりは、外部接続用の端子21cを共
通としてその両端に接続板をそれぞれ配設した構成のも
のをコンデンサ素子の電極の端面に接続することによ
り、コンデンサ素子間の抵抗をより低くすることがで
き、かつ部品点数を削減することができる効果がある。
Further, each capacitor element 1a, 1b, 1c
When connecting in series, terminals 2 for external connection
Rather than joining the connection plate 21 provided with 1c to the end faces of the respective electrodes of the capacitor element, the one having a configuration in which the terminals 21c for external connection are shared and the connection plates are arranged at both ends thereof is used as the electrode of the capacitor element. By connecting to the end faces, the resistance between the capacitor elements can be further lowered, and the number of parts can be reduced.

【0038】(実施の形態5)図9、図10は本発明の
実施の形態5によるコンデンサの圧力調整弁の構成を示
した断面図であり、これらの圧力調整弁はコンデンサの
内部圧力が所定以上の圧力になると圧力を外部に逃がす
ための自己復帰型のものである。
(Embodiment 5) FIGS. 9 and 10 are sectional views showing the structure of a pressure regulating valve for a condenser according to a fifth embodiment of the present invention. These pressure regulating valves have a predetermined internal pressure of the condenser. It is of a self-reset type for releasing the pressure to the outside when the above pressure is reached.

【0039】図9(a)において、封口板22Dは***
部分22eとコンデンサ内部と連通する連通孔22fを
設け、この連通孔22fに重なるように閉塞体24を配
設し、外部と連通する連通孔25cを有するキャップ2
5bで閉塞体24を覆い、閉塞体24を閉塞する前段階
の状態を示したもので、これを図9(b)に示すよう
に、閉塞体24をキャップ25bと封口板22Dで閉塞
するために、上記***部分22eをポンチなどによりカ
シメることにより変形させてキャップ25bを保持する
ことができ、この構成によると、キャップ25bを封口
板22D等に取り付ける際、短時間で取り付けができる
ために生産性を向上させることができる。
In FIG. 9 (a), the sealing plate 22D is provided with a communication hole 22f which communicates with the raised portion 22e and the inside of the capacitor, and a closing body 24 is arranged so as to overlap with the communication hole 22f and communicates with the outside. Cap 2 having hole 25c
5b shows the state of the previous stage of covering the closing body 24 with 5b and closing the closing body 24. As shown in FIG. 9B, the closing body 24 is closed with the cap 25b and the sealing plate 22D. In addition, the raised portion 22e can be deformed by crimping with a punch or the like to hold the cap 25b. With this configuration, when the cap 25b is attached to the sealing plate 22D or the like, it can be attached in a short time. Productivity can be improved.

【0040】また、別の圧力調整弁について図10を用
いて説明すると、同図において、26は封口板、27は
この封口板26の連通孔に取り付けられた弁座、28は
閉塞部材、29はバネ、30はキャップであり、このよ
うに封口板26に設けた外装ケースの内部と連通する連
通孔に対して、外装ケースの内部と連通する連通孔を備
えた弁座27を配設し、この弁座27の連通孔を覆うよ
うに連通孔を塞ぐ閉塞部材28と金属製のバネ29から
なる閉塞体を配設し、この閉塞体を弁座27とで挟む形
でキャップ30を配設することにより構成されたもので
ある。
Another pressure regulating valve will be described with reference to FIG. 10. In FIG. 10, 26 is a sealing plate, 27 is a valve seat attached to the communication hole of the sealing plate 26, 28 is a closing member, and 29 is a closing member. Is a spring, and 30 is a cap. The valve seat 27 having a communication hole communicating with the inside of the outer case is provided for the communication hole communicating with the inside of the outer case provided in the sealing plate 26 as described above. A closing member including a closing member 28 for closing the communication hole and a metal spring 29 is arranged so as to cover the communication hole of the valve seat 27, and the cap 30 is arranged so as to sandwich the closing body with the valve seat 27. It is configured by installing.

【0041】このように、外装ケースの内部圧力が所定
の圧力以上になると圧力を外部に逃がすための自己復帰
型の圧力調整弁を封口板26に設けることにより、外装
ケースの内部で発生したガスを外部へ放出して外装ケー
スの内部の圧力の上昇を防ぐことができ、また作動後に
圧力調整弁は作動前の状態に復帰して外装ケースの内部
の気密性を保持することができるため、外装ケースの内
部のガス発生による圧力の上昇においても電気二重層コ
ンデンサの外観に異常をきたすことはなく、その特性を
維持することができるものである。
As described above, by providing the sealing plate 26 with a self-reset type pressure regulating valve for releasing the pressure to the outside when the internal pressure of the external case becomes equal to or higher than a predetermined pressure, the gas generated inside the external case can be obtained. Can be released to the outside to prevent the pressure inside the outer case from rising, and after operation, the pressure control valve can return to the state before operation and maintain the airtightness inside the outer case. Even if the pressure rises due to the generation of gas inside the outer case, the appearance of the electric double layer capacitor is not abnormal, and the characteristics thereof can be maintained.

【0042】なお、上記実施の形態1〜5においては、
コンデンサ素子を3個直列に接続した構成のものについ
て記述したが、本発明はこれに限定されるものではな
く、電気二重層コンデンサの電圧の要望により、コンデ
ンサ素子を3個以上を直列接続したものや、コンデンサ
素子を2列に複数個並べて直列接続して外装ケースに収
納した電気二重層コンデンサも本発明の目的に適うこと
ができるものである。
In the above first to fifth embodiments,
Although the configuration in which three capacitor elements are connected in series has been described, the present invention is not limited to this, and three or more capacitor elements are connected in series according to the voltage demand of the electric double layer capacitor. Alternatively, an electric double layer capacitor in which a plurality of capacitor elements are arranged in two rows and connected in series and housed in an outer case can also serve the purpose of the present invention.

【0043】[0043]

【発明の効果】以上のように本発明の電気二重層コンデ
ンサは、平板状の一対の電極をその間にセパレータを介
在させかつ各電極の端面が互いに逆方向に突出するよう
にして巻回することにより構成されたコンデンサ素子
と、外部接続用の端子を備えて上記コンデンサ素子の各
電極端面に夫々接合された接続板と、この接続板が接合
されたコンデンサ素子を駆動用電解液と共に収納するコ
ンデンサ素子収納部が隔壁部を介して複数個独立して設
けられた上面開放の外装ケースと、上記コンデンサ素子
収納部に収納されて隔壁部を介して隣接するコンデンサ
素子の接続板に設けられた端子を夫々接続して各コンデ
ンサ素子を直列接続した状態で上記外装ケースの開口部
を封止した封止板からなる構成とすることにより、コン
デンサ素子の内部抵抗を低くし、かつ高耐圧で信頼性の
高い電気二重層コンデンサを得ることができるものであ
る。
As described above, in the electric double layer capacitor of the present invention, a pair of flat electrodes are wound with a separator interposed therebetween and the end faces of the electrodes project in opposite directions. And a connection plate having a terminal for external connection and being joined to each end face of each electrode of the capacitor element, and a capacitor for accommodating the capacitor element to which the connection plate is joined together with a driving electrolytic solution. An outer case having an open upper surface in which a plurality of element housings are independently provided via a partition wall, and terminals provided in the capacitor element housings and provided on a connecting plate of adjacent capacitor elements via a partition wall. Are connected to each other in series, and each capacitor element is connected in series, and a sealing plate that seals the opening of the outer case is used. It is capable of a lower, and obtain a high electric double layer capacitor reliable high breakdown voltage.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施の形態1による電気二重層コンデ
ンサの構成を示す断面図
FIG. 1 is a sectional view showing a configuration of an electric double layer capacitor according to a first embodiment of the present invention.

【図2】(a)同コンデンサ素子の構成を示す展開斜視
図 (b)同斜視図
FIG. 2A is a developed perspective view showing the configuration of the capacitor element, and FIG.

【図3】同コンデンサ素子を固定部材で固定した構成の
断面図
FIG. 3 is a sectional view of a structure in which the capacitor element is fixed by a fixing member.

【図4】本発明の実施の形態2による外装ケースの底面
部を半円形状にした構成を示す斜視図
FIG. 4 is a perspective view showing a configuration in which a bottom portion of an outer case according to Embodiment 2 of the present invention has a semicircular shape.

【図5】同外装ケースの底面部を多角形状にした構成を
示す斜視図
FIG. 5 is a perspective view showing a configuration in which a bottom surface portion of the same outer case is formed into a polygonal shape.

【図6】本発明の実施の形態3によるコンデンサ素子の
断面図
FIG. 6 is a sectional view of a capacitor element according to a third embodiment of the present invention.

【図7】本発明の実施の形態4による接続板の斜視図FIG. 7 is a perspective view of a connection plate according to a fourth embodiment of the present invention.

【図8】(a)同接続板の他の例を示す斜視図 (b)同A−A断面を示す断面図 (c)同B−B断面を示す断面図FIG. 8A is a perspective view showing another example of the connection plate. (B) Sectional drawing which shows the same AA cross section. (C) Sectional drawing which shows the BB cross section

【図9】(a)本発明の実施の形態5による圧力調整弁
の組立途上を示す断面図 (b)同圧力調整弁を示す断面図
FIG. 9A is a sectional view showing a process of assembling a pressure regulating valve according to a fifth embodiment of the present invention, and FIG. 9B is a sectional view showing the same pressure regulating valve.

【図10】同圧力調整弁の他の例を示す断面図FIG. 10 is a sectional view showing another example of the pressure regulating valve.

【図11】従来の電気二重層コンデンサの構成を示す断
面図
FIG. 11 is a sectional view showing the configuration of a conventional electric double layer capacitor.

【図12】同コンデンサ素子を示す展開斜視図FIG. 12 is an exploded perspective view showing the same capacitor element.

【符号の説明】[Explanation of symbols]

1a,1b,1c コンデンサ素子 2 電極 2a,2b 集電体の露出部分 3a,3b 分極性電極層 4 セパレータ 5a,5b,5c,5d 接続板 6a,6b,6c コンデンサ素子収納部 7a,7b 隔壁部 8,8a,8b 外装ケース 9 封止板 10 圧力調整弁 11a,11b,11c,11d 外部接続用の端子 12a,12b,12c 固定部材 31 導電性材料 1a, 1b, 1c Capacitor element 2 electrodes 2a, 2b Exposed part of current collector 3a, 3b Polarizing electrode layer 4 separator 5a, 5b, 5c, 5d connection plate 6a, 6b, 6c Capacitor element storage part 7a, 7b Partition wall 8,8a, 8b Exterior case 9 Sealing plate 10 Pressure control valve 11a, 11b, 11c, 11d External connection terminals 12a, 12b, 12c fixing member 31 Conductive material

───────────────────────────────────────────────────── フロントページの続き (72)発明者 平本 恵 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 岩元 茂芳 大阪府門真市大字門真1006番地 松下電器 産業株式会社内   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Megumi Hiramoto             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Shigeyoshi Iwamoto             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd.

Claims (9)

【特許請求の範囲】[Claims] 【請求項1】 平板状の一対の電極をその間にセパレー
タを介在させかつ各電極の端面が互いに逆方向に突出す
るようにして巻回することにより構成されたコンデンサ
素子と、外部接続用の端子を備えて上記コンデンサ素子
の各電極端面に夫々接合された接続板と、この接続板が
接合されたコンデンサ素子を駆動用電解液と共に収納す
るコンデンサ素子収納部が隔壁部を介して複数個独立し
て設けられた上面開放の外装ケースと、上記コンデンサ
素子収納部に収納されて隔壁部を介して隣接するコンデ
ンサ素子の接続板に設けられた外部接続用の端子を夫々
接続して各コンデンサ素子を直列接続した状態で上記外
装ケースの開口部を封止した封止板からなる電気二重層
コンデンサ。
1. A capacitor element formed by winding a pair of flat plate-shaped electrodes with a separator interposed therebetween and end faces of the electrodes projecting in mutually opposite directions, and a terminal for external connection. A plurality of connection plates each of which is joined to each electrode end surface of the capacitor element, and a plurality of capacitor element storage portions for storing the capacitor elements to which the connection plates are joined together with the driving electrolyte are independently provided via the partition wall portion. The external case provided on the upper surface and the external case provided in the connecting plate of the adjacent capacitor element housed in the capacitor element housing section and connected via the partition wall section are connected to each other to connect each capacitor element. An electric double layer capacitor comprising a sealing plate that seals the opening of the outer case in a state of being connected in series.
【請求項2】 接続板のコンデンサ素子の電極端面との
接合面に凹凸部を設けた請求項1に記載の電気二重層コ
ンデンサ。
2. The electric double layer capacitor according to claim 1, wherein a concavo-convex portion is provided on a joint surface of the connection plate with the electrode end surface of the capacitor element.
【請求項3】 外部接続用の端子を備えてコンデンサ素
子の電極端面に夫々接合される接続板のうち、外装ケー
スに設けたコンデンサ素子収納部に収納されて隔壁部を
介して隣接する2枚の接続板を1組としてこれらの接続
板に設けられた各外部接続用の端子を一体化した請求項
1に記載の電気二重層コンデンサ。
3. A connecting plate, which is provided with a terminal for external connection and is joined to an electrode end face of a capacitor element, respectively, and which are housed in a capacitor element housing portion provided in an outer case and are adjacent to each other via a partition wall portion. 2. The electric double layer capacitor according to claim 1, wherein the connection plates of 1 are set as one set and the terminals for external connection provided on these connection plates are integrated.
【請求項4】 外装ケースの底面部分を半円形状または
多角形状とした請求項1に記載の電気二重層コンデン
サ。
4. The electric double layer capacitor according to claim 1, wherein a bottom portion of the outer case has a semicircular shape or a polygonal shape.
【請求項5】 コンデンサ素子を収納した外装ケースの
内部圧力が所定の圧力以上になると圧力を外部に逃がす
ための自己復帰型の圧力調整弁を封止板に設けた請求項
1に記載の電気二重層コンデンサ。
5. The electric device according to claim 1, wherein the sealing plate is provided with a self-reset type pressure regulating valve for releasing the pressure to the outside when the internal pressure of the outer case accommodating the capacitor element exceeds a predetermined pressure. Double layer capacitor.
【請求項6】 外装ケースが有機樹脂または金属薄板に
有機樹脂を貼り合わせた複合材のいずれかからなる請求
項1に記載の電気二重層コンデンサ。
6. The electric double layer capacitor according to claim 1, wherein the outer case is made of an organic resin or a composite material obtained by laminating an organic resin on a thin metal plate.
【請求項7】 外装ケースの内底部および/または封止
板内面に、コンデンサ素子を固定する固定部材を配設し
た請求項1に記載の電気二重層コンデンサ。
7. The electric double layer capacitor according to claim 1, wherein a fixing member for fixing the capacitor element is arranged on the inner bottom portion of the outer case and / or the inner surface of the sealing plate.
【請求項8】 平板状の一対の電極として、金属箔もし
くは導電性高分子からなる集電体上に集電体の一端に集
電体の露出部分が形成されるように活性炭と結着剤と導
電剤の混合物からなる分極性電極層を形成してなる電極
を用いた請求項1に記載の電気二重層コンデンサ。
8. An activated carbon and a binder as a pair of flat plate electrodes, such that an exposed portion of the current collector is formed at one end of the current collector on the current collector made of a metal foil or a conductive polymer. The electric double layer capacitor according to claim 1, wherein an electrode formed by forming a polarizable electrode layer made of a mixture of a conductive agent and a conductive agent is used.
【請求項9】 平板状の一対の電極の間に介在させるセ
パレータと、このセパレータに含浸する電解液に代え、
機能性高分子もしくはセパレータと機能性高分子からな
る複合部材を用いた請求項1に記載の電気二重層コンデ
ンサ。
9. A separator interposed between a pair of flat plate electrodes and an electrolytic solution impregnated in the separator,
The electric double layer capacitor according to claim 1, wherein a functional polymer or a composite member composed of a separator and a functional polymer is used.
JP2001250059A 2001-08-21 2001-08-21 Electric double layer capacitor Pending JP2003059783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001250059A JP2003059783A (en) 2001-08-21 2001-08-21 Electric double layer capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001250059A JP2003059783A (en) 2001-08-21 2001-08-21 Electric double layer capacitor

Publications (1)

Publication Number Publication Date
JP2003059783A true JP2003059783A (en) 2003-02-28

Family

ID=19078952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001250059A Pending JP2003059783A (en) 2001-08-21 2001-08-21 Electric double layer capacitor

Country Status (1)

Country Link
JP (1) JP2003059783A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006210562A (en) * 2005-01-27 2006-08-10 Matsushita Electric Ind Co Ltd Capacitor
JP2006228858A (en) * 2005-02-16 2006-08-31 Matsushita Electric Ind Co Ltd Capacitor
KR100619281B1 (en) 2004-07-13 2006-09-01 (주) 아모센스 Winding Type Capacitor
US7417845B2 (en) 2004-01-20 2008-08-26 Japan Radio Co., Ltd. Electric double-layer capacitor, electric energy storage device including the same, and production method for electric double-layer capacitor
US7843680B2 (en) 2004-05-28 2010-11-30 Panasonic Corporation Capacitor and method of manufacturing the same
US8422198B2 (en) 2010-05-20 2013-04-16 Samsung Electro-Mechanics Co., Ltd. Electric double layer capacitor package and method of manufacturing the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7417845B2 (en) 2004-01-20 2008-08-26 Japan Radio Co., Ltd. Electric double-layer capacitor, electric energy storage device including the same, and production method for electric double-layer capacitor
US7843680B2 (en) 2004-05-28 2010-11-30 Panasonic Corporation Capacitor and method of manufacturing the same
KR100619281B1 (en) 2004-07-13 2006-09-01 (주) 아모센스 Winding Type Capacitor
JP2006210562A (en) * 2005-01-27 2006-08-10 Matsushita Electric Ind Co Ltd Capacitor
JP2006228858A (en) * 2005-02-16 2006-08-31 Matsushita Electric Ind Co Ltd Capacitor
US8422198B2 (en) 2010-05-20 2013-04-16 Samsung Electro-Mechanics Co., Ltd. Electric double layer capacitor package and method of manufacturing the same

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