JPH03116709A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JPH03116709A JPH03116709A JP25326789A JP25326789A JPH03116709A JP H03116709 A JPH03116709 A JP H03116709A JP 25326789 A JP25326789 A JP 25326789A JP 25326789 A JP25326789 A JP 25326789A JP H03116709 A JPH03116709 A JP H03116709A
- Authority
- JP
- Japan
- Prior art keywords
- electrode elements
- electrode
- separator
- active carbon
- electrode body
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000008151 electrolyte solution Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 239000003792 electrolyte Substances 0.000 abstract description 6
- 238000005245 sintering Methods 0.000 abstract description 6
- 239000010419 fine particle Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 230000001788 irregular Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal 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
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003466 welding 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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電気二重層原理を用いた大静電容量の電気二重
層コンデンサに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a large capacitance electric double layer capacitor using the electric double layer principle.
（従来の技術）
近年、電子装置の半導体メモリのバックアップ用の電源
として電気二重層原理を用いた大容量のコンデンサが開
発され、マイクロコンピュータやＩＣメモリなどに組込
まれて広く使用されている。(Prior Art) In recent years, large-capacity capacitors using the electric double layer principle have been developed as backup power supplies for semiconductor memories in electronic devices, and are widely used by being incorporated into microcomputers, IC memories, and the like.
第４図はこのようなコンデンサの従来の一例を示した断
面図であり、１０は導電性ゴムを用いた集電板、４０は
非導電性ゴムを用いたガスケット、２０は分極性電極で
活性炭に希硫酸を含浸させたペースト状電極で、セパレ
ータ３０によって上下に２分されたガスケット４０の空
間に収納されている。FIG. 4 is a cross-sectional view showing an example of a conventional capacitor of this kind, where 10 is a current collector plate made of conductive rubber, 40 is a gasket made of non-conductive rubber, and 20 is a polarizable electrode made of activated carbon. A paste-like electrode impregnated with dilute sulfuric acid is housed in a space of a gasket 40 divided into upper and lower halves by a separator 30.
そして、このようなペースト状の電極では、大型の大静
電容量のコンデンサにするには、電極の内部抵抗を下げ
たり集電板との接触抵抗を減するため加圧したり、ペー
スト状電極の片寄りや、ひび割れが生じて電気的特性が
不安定となる欠点がある。In order to make a large capacitor with a large capacitance from such a paste-like electrode, it is necessary to apply pressure to lower the internal resistance of the electrode and reduce the contact resistance with the current collector plate. It has the disadvantage that it becomes uneven and cracks occur, making the electrical characteristics unstable.
このため、電極に焼結材を用いた大容量コンデンサとし
て、比表面積の大きいカーボンを含んだ電解液に対し、
不活性な金属粉末を主体とした焼結材よりなる分極性電
極をセパレータを介して配置し、これを電解液を内蔵し
た外装缶に封入した提案が特開昭４９−８７５３号公報
に開示されている。For this reason, as a high-capacity capacitor using sintered material for the electrode, it is difficult to use an electrolyte containing carbon with a large specific surface area.
JP-A-49-8753 discloses a proposal in which a polarizable electrode made of a sintered material mainly composed of inert metal powder is arranged with a separator interposed therebetween, and the electrode is sealed in an outer can containing an electrolyte. ing.
（発明が解決しようとする課題）
このような分極性電極に焼結体を用いたものにおいては
、集電板と平行に複数の電極体を並列接続することによ
り、静電容量を増大させたコンデンサが得られるが、焼
結による電極体の成形では、均一な厚みの電極体を複数
個揃えることが困難で、第２図に示すように集電板と電
極体との間に隙間がおいて接触不良が生ずる欠点がある
。また第３図のようにガスケットの寸法に基づいて設定
した電極体では、厚みが不安定でガスケットより厚みの
大きい電極体が生ずる虞がある。(Problem to be solved by the invention) In such a polarizable electrode using a sintered body, the capacitance can be increased by connecting a plurality of electrode bodies in parallel with the current collector plate. A capacitor is obtained, but when forming electrode bodies by sintering, it is difficult to prepare multiple electrode bodies with uniform thickness, and as shown in Figure 2, there is a gap between the current collector plate and the electrode body. This has the disadvantage of causing poor contact. Further, in the case of an electrode body set based on the dimensions of the gasket as shown in FIG. 3, there is a possibility that the thickness of the electrode body is unstable, resulting in an electrode body that is thicker than the gasket.
さらに、集電板と電極体との接触抵抗を減するため、集
電板を電極体方向に加圧すると、この加圧力や電極体の
変形で、セパレータなどに破損を生じて生産の歩留りが
悪化するという問題が生じている。Furthermore, in order to reduce the contact resistance between the current collector plate and the electrode body, if pressure is applied to the current collector plate in the direction of the electrode body, this pressing force and deformation of the electrode body will cause damage to the separator, etc., reducing production yield. The problem is getting worse.
本発明はこのような問題に鑑みてなされたものであり、
その目的は焼結による電極体の寸法の不揃いを調節しよ
うとする電気二重層コンデンサを提供することにある。The present invention was made in view of such problems,
The purpose is to provide an electric double layer capacitor in which irregularities in the dimensions of electrode bodies due to sintering are to be controlled.
（課題を解決するための手段）
本発明によれば、活性炭微粉末を焼結した複数の電極体
を電解液に浸漬し、これら複数の電極体を集電板に接触
せしめた電気二重層コンデンサにおいて、前記電極体と
集電板との間に、電極体の厚み調整用の活性炭層を介在
せしめた電気二重層コンデンサが提供される。(Means for Solving the Problems) According to the present invention, an electric double layer capacitor includes a plurality of electrode bodies made of sintered fine activated carbon powder, which are immersed in an electrolytic solution, and the plurality of electrode bodies are brought into contact with a current collector plate. An electric double layer capacitor is provided in which an activated carbon layer for adjusting the thickness of the electrode body is interposed between the electrode body and the current collector plate.
（作用）
本発明では、焼結成形による電極体の厚みをガスケット
の寸法に対して、例えば６０％〜７０％程度の寸法に設
定して焼結させ、電極体とセパレータとの間にその間隔
の不揃いの寸法に応じて粒状や繊維状活性炭などを介在
させたので、集電板による加圧のために電極体との接触
抵抗が良好になるとともに、セパレータへの圧力も介在
させた活性炭のため平均化されて破損が防止される。(Function) In the present invention, the thickness of the electrode body formed by sintering is set to, for example, about 60% to 70% of the size of the gasket, and the electrode body is sintered so that there is a gap between the electrode body and the separator. Since granular or fibrous activated carbon is interposed according to the irregular dimensions of the activated carbon, the contact resistance with the electrode body is good due to the pressure applied by the current collecting plate, and the activated carbon also acts as an intervening pressure to the separator. Therefore, it is averaged and damage is prevented.
（実施例）
つぎに本発明の実施例について図面を用いて詳細に説明
する。(Example) Next, an example of the present invention will be described in detail using the drawings.
第１図は本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
１は集電板で導電性の微粒子を混合して導電性を持たせ
るとともに、弾力性を有するものである。Reference numeral 1 is a current collector plate which is made to have conductivity by mixing conductive fine particles and has elasticity.
２は電極体で、活性炭微粒子を例えばプラズマ焼結によ
って多孔性に焼結成形したもので、その厚さはガスケッ
ト４の収納寸法に対して、例えば、６０％〜７０％程度
に成形されるように設定されており、所定の電解液が浸
漬されて電荷を蓄える電極となるものである。Reference numeral 2 denotes an electrode body, which is formed by sintering activated carbon fine particles into a porous form by, for example, plasma sintering. The electrode is immersed in a predetermined electrolytic solution and stores electric charge.
３はセパレータで、電極体２および後述する厚み調整用
の活性炭層を分離するもので、例えば微孔性のポリプロ
ピレン膜が用いられ、該セパレータ３の全周囲の部分は
ガスケット４．４との間に挟まれて電解液が外部に洩れ
出ぬように接着されている。3 is a separator that separates the electrode body 2 and an activated carbon layer for thickness adjustment, which will be described later. For example, a microporous polypropylene membrane is used, and the entire periphery of the separator 3 is separated from the gasket 4.4. It is sandwiched between and bonded to prevent the electrolyte from leaking outside.
ガスケット４は例えば絶縁性を有するゴム材からなり、
接着されたセパレータ３との空間に分極性電極となる複
数の電極体２を収納するものである。そして焼成された
電極体２は厚さが不揃いのため、電極体２のセパレータ
３側には粒状や繊維状、またはシート状の活性炭の層５
を、電極体２のそれぞれの厚さに応じて敷設し、複数の
電極体２の集電板１に当接する面が一つの平面となるよ
うに調節した後、電解液を電極体２および上述の活性炭
の層に含浸させ、集電板１を複数の電極体２の面に載置
して集電板１の全周縁とガスケット４との当接面を熱溶
着や接着剤によって接着して構成したものである。The gasket 4 is made of an insulating rubber material, for example,
A plurality of electrode bodies 2 serving as polarizable electrodes are housed in a space between the bonded separators 3. Since the thickness of the fired electrode body 2 is uneven, there is a layer of activated carbon in the form of particles, fibers, or sheets on the separator 3 side of the electrode body 2.
are laid according to the thickness of each electrode body 2, and adjusted so that the surfaces of the plurality of electrode bodies 2 that contact the current collector plate 1 become one plane, and then the electrolyte is applied to the electrode bodies 2 and the above-mentioned The current collector plate 1 is placed on the surface of the plurality of electrode bodies 2, and the contact surface between the entire periphery of the current collector plate 1 and the gasket 4 is bonded by heat welding or adhesive. It is composed of
このように構成された本実施例においては、活性炭微粒
子の焼結体からなる電極体２の厚さ、をガスケット４の
深さ寸法に応じて所定の比率により厚さを減するととも
に、セパレータ３と電極体２との接触する部分には、活
性炭の粒状、繊維状またはシート形状の層５を電極体の
厚さ方向の不揃いの形状に応じてセパレータ３との間に
介在させ、集電板１とはそれぞれ十分に接触するように
形成したので、その接触抵抗は十分に低い値が得られる
ことになり、さらに、セパレータ３と電極え電極体２に
鋭角の部分があっても緩衝されて、セパレータ３の破損
は免れることになる。In this embodiment configured in this way, the thickness of the electrode body 2 made of a sintered body of activated carbon fine particles is reduced by a predetermined ratio according to the depth dimension of the gasket 4, and the thickness of the electrode body 2 made of a sintered body of activated carbon particles is reduced by a predetermined ratio. A granular, fibrous, or sheet-shaped layer 5 of activated carbon is interposed between the separator 3 and the electrode body 2 according to the irregular shape in the thickness direction of the electrode body, and the current collector plate Since the electrodes 1 and 1 are formed in sufficient contact with each other, a sufficiently low contact resistance can be obtained, and even if there is an acute angle between the separator 3 and the electrode body 2, it is buffered. , damage to the separator 3 can be avoided.
以上、本発明を上述の実施例を用いて説明したが、本発
明の主旨の範囲内で種々の変形が可能であり、これらの
変形を本発明の範囲から排除するものではない。Although the present invention has been described above using the above-mentioned embodiments, various modifications are possible within the scope of the gist of the present invention, and these modifications are not excluded from the scope of the present invention.
（発明の効果）
本発明によれば、焼結体よりなる電極体の形状が不揃い
であっても、セパレータとの間に活性炭の粒状、繊維状
、シート状などの層を、電極体の形状に応じて設け、集
電板とは十分に接触するように構成したので、集電板と
電極体との接触抵抗は十分に低い値が得られる効果が生
ずるとともに、集電板を内側方向に加圧しても、セパレ
ータには活性炭の層が接触しているため、緩衝材となっ
てセパレータの破損が防止でき、生産歩留りが良好とな
る利点がある。(Effects of the Invention) According to the present invention, even if the shape of the electrode body made of a sintered body is irregular, a layer of activated carbon in the form of particles, fibers, sheets, etc., can be inserted between the separator and the shape of the electrode body. Since the current collector plate is configured to have sufficient contact with the current collector plate, it is possible to obtain a sufficiently low contact resistance between the current collector plate and the electrode body. Even when pressurized, since the activated carbon layer is in contact with the separator, it acts as a buffer and prevents damage to the separator, which has the advantage of improving production yield.
第１図は本発明の一実施例を示す断面図、第２図は不揃
いな電極体を用い接触不良の状態を示す断面図、第３図
はガスケットの厚みに対し電極体の厚み不同の説明図、
第４図は従来のコンデンサの一例を示す断面図である。
１・・・集電板、２・・・電極体、３・・・セパレータ
、４・・・ガスケット、５・・・層状活性炭。Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a sectional view showing a state of poor contact using uneven electrode bodies, and Fig. 3 is an explanation of the uneven thickness of the electrode body with respect to the thickness of the gasket. figure,
FIG. 4 is a sectional view showing an example of a conventional capacitor. DESCRIPTION OF SYMBOLS 1... Current collector plate, 2... Electrode body, 3... Separator, 4... Gasket, 5... Layered activated carbon.
Claims (1)
し、これら複数の電極体を集電板に接触せしめた電気二
重層コンデンサにおいて、前記電極体と集電板との間に
、電極体の厚み調整用の活性炭層を介在せしめたことを
特徴とする電気二重層コンデンサ。In an electric double layer capacitor in which a plurality of electrode bodies made of sintered activated carbon fine powder are immersed in an electrolytic solution and brought into contact with a current collector plate, an electrode is placed between the electrode body and the current collector plate. An electric double layer capacitor characterized by interposing an activated carbon layer for body thickness adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25326789A JP2800307B2 (en) | 1989-09-28 | 1989-09-28 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25326789A JP2800307B2 (en) | 1989-09-28 | 1989-09-28 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03116709A true JPH03116709A (en) | 1991-05-17 |
| JP2800307B2 JP2800307B2 (en) | 1998-09-21 |
Family
ID=17248904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25326789A Expired - Fee Related JP2800307B2 (en) | 1989-09-28 | 1989-09-28 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2800307B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041912A (en) * | 2001-07-30 | 2003-02-13 | Honda Motor Co Ltd | Rocker arm with hydraulic tappet |
| JP2009074508A (en) * | 2007-09-25 | 2009-04-09 | Honda Motor Co Ltd | Lubricating structure of valve gear |
| US8563260B2 (en) | 2008-12-19 | 2013-10-22 | Osaka Prefecture University Publication Corpoaration | Capillary for immunoassay, and capillary immunoassay method using same |
-
1989
- 1989-09-28 JP JP25326789A patent/JP2800307B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041912A (en) * | 2001-07-30 | 2003-02-13 | Honda Motor Co Ltd | Rocker arm with hydraulic tappet |
| JP2009074508A (en) * | 2007-09-25 | 2009-04-09 | Honda Motor Co Ltd | Lubricating structure of valve gear |
| US8563260B2 (en) | 2008-12-19 | 2013-10-22 | Osaka Prefecture University Publication Corpoaration | Capillary for immunoassay, and capillary immunoassay method using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2800307B2 (en) | 1998-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |