JPH03283523A - Electric double layer capacitor - Google Patents
Electric double layer capacitorInfo
- Publication number
- JPH03283523A JPH03283523A JP2083823A JP8382390A JPH03283523A JP H03283523 A JPH03283523 A JP H03283523A JP 2083823 A JP2083823 A JP 2083823A JP 8382390 A JP8382390 A JP 8382390A JP H03283523 A JPH03283523 A JP H03283523A
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- electrode plate
- electrode
- double layer
- electric double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 abstract description 2
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 2
- 229910052725 zinc Inorganic materials 0.000 abstract description 2
- 239000011701 zinc Substances 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract 3
- 239000003518 caustics Substances 0.000 abstract 1
- 231100001010 corrosive Toxicity 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 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
- 238000003466 welding Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電気二重層コンデンサにおける集電体と電極板
との間の接触抵抗を減少させようとする電気二重層コン
デンサに関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an electric double layer capacitor in which contact resistance between a current collector and an electrode plate is reduced.
（従来の技術）
近年、電子装置のメモリーのバックアップ用電源として
電気二重層原理を用いた大静電容量を有するコンデンサ
が採用され、マイクロコンピュータやＩＣメモリーなど
に組込まれて広く使用されている。(Prior Art) In recent years, capacitors with large capacitance based on the electric double layer principle have been adopted as backup power sources for memories in electronic devices, and are widely used by being incorporated into microcomputers, IC memories, and the like.
一方、この種の電気二重層コンデンサでは第５図に示す
ように、分極性電極となる電極体１の電荷を集電する集
電体２とその外部に電極板３が被着され、上下の電極板
３．３によって電気二重層コンデンサの端子が構成され
ている。On the other hand, in this type of electric double layer capacitor, as shown in FIG. The electrode plates 3.3 constitute the terminals of the electric double layer capacitor.
（発明が解決しようとする課題）
上述の第５図に示した電気二重層コンデンサでは集電体
と電極板とは接触しているが、両者の間の接触抵抗が大
のため、電気二重層コンデンサとしての内部抵抗が高く
なって十分な性能が得られず、このため電極板に内部方
向への荷重をかけて集電体との接触抵抗を減少させてい
る。(Problems to be Solved by the Invention) In the electric double layer capacitor shown in FIG. The internal resistance as a capacitor becomes high and sufficient performance cannot be obtained, so a load is applied inward to the electrode plate to reduce the contact resistance with the current collector.
一方、このような電気二重層コンデンサにおける内部抵
抗の減少のため、特開昭５５−９６６２３号公報に可撓
性グラファイトシートを挿入して多段に積層する提案が
なされているが、グラファイト自体の内部抵抗や、グラ
ファイトシートの厚味が増大して大型化するという問題
がある。On the other hand, in order to reduce the internal resistance of such electric double layer capacitors, Japanese Patent Application Laid-Open No. 55-96623 proposes inserting flexible graphite sheets and stacking them in multiple stages. There are problems in that resistance increases and the thickness of the graphite sheet increases, resulting in an increase in size.
本発明はこのような問題に鑑みてなされたものであり、
その目的は電気二重層コンデンサの寸法の増大を抑え、
また内部抵抗を減少させ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 has been made in view of such problems,
The purpose is to suppress the increase in the size of electric double layer capacitors,
Another object of the present invention is to provide an electric double layer capacitor whose internal resistance is reduced.
（ｆｆ題を解決するための手段）
上述の目的を達成するために本発明によれば、電解液が
含浸された電極体の電荷を集電する集電体と、該集電体
、に接触して端子となる電極板とを備えた電気二重層コ
ンデンサにおいて、前記電極板の集電体との接触面を粗
面に形成するとともに、該接触面に集電体を熱融着せし
めた電気二重層コンデンサが提供される。(Means for solving the ff problem) According to the present invention, in order to achieve the above-mentioned object, a current collector that collects the charge of an electrode body impregnated with an electrolytic solution, and a contact with the current collector are provided. In an electric double layer capacitor comprising an electrode plate serving as a terminal, the contact surface of the electrode plate with the current collector is formed into a rough surface, and the current collector is thermally fused to the contact surface. A double layer capacitor is provided.
（作用）
本発明では集電体に接触する電極板の面を腐食液を用い
て腐食させて粗面に形成し、ホットプレス機を使用して
電極板の粗面に集電体を熱融着させ、両者を緊密に密着
させてその間の接触抵抗を激減させる。(Function) In the present invention, the surface of the electrode plate that contacts the current collector is corroded using a corrosive liquid to form a rough surface, and a hot press machine is used to heat-fuse the current collector onto the rough surface of the electrode plate. The contact resistance between the two is drastically reduced by bringing them into close contact with each other.
（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図は本発明にかかる電気二重層コンデンサの一実施
例を示す断面図、第２図はその円内部分の拡大図である
。FIG. 1 is a cross-sectional view showing an embodiment of an electric double layer capacitor according to the present invention, and FIG. 2 is an enlarged view of the circular portion thereof.
これらの図面において、１は電極体であり、表面積の犬
ぎい活性炭粉末の例えば平均粒径２０μ程度のものを焼
結して多孔性としたもので、所定の電解液を含浸させて
分極性電極とするものである。In these drawings, reference numeral 1 denotes an electrode body, which is made porous by sintering activated carbon powder with a surface area of about 20 μm in average particle size, and is impregnated with a predetermined electrolyte to form a polarizable electrode. That is.
２は集電体で、例えばカーボンと柔軟性を有するゴムと
を混練してシート状に形成したもので、その片面は電極
体１に密着して電極体の電荷を集電するとともに、他面
は後述するように電極板３に熱融着されて、集電した電
荷を電極板３に導くものである。2 is a current collector, which is formed into a sheet by kneading, for example, carbon and flexible rubber; one side of the current collector is in close contact with the electrode body 1 to collect the electric charge of the electrode body; is thermally fused to the electrode plate 3 to guide the collected charges to the electrode plate 3, as will be described later.
電極板３は銅、アルミ、亜鉛またはカーボンシートなど
が薄板状に形成されたものであり、金属板の場合には集
電体２に接する面は、例えば金属を腐食させる硝酸や希
硫酸などの所定濃度の溶液に浸して表面をマットフェイ
スに形成し、水洗いして前処理を行ったものが使用され
る。The electrode plate 3 is a thin plate made of copper, aluminum, zinc, or carbon sheet, and in the case of a metal plate, the surface in contact with the current collector 2 is exposed to nitric acid, dilute sulfuric acid, etc. that corrode metals. The surface is pretreated by being immersed in a solution of a predetermined concentration to form a matte face, and then washed with water.
そして電極板３と集電体２との融着に際しては、ホット
プレス機を使用して第３図に示すように例えばアルミ板
の溶着防止板１１の上に集電体２と電極板３とを載置し
、所定の加圧、加温を行って両者を緊密に融着させる。When the electrode plate 3 and the current collector 2 are fused together, a hot press machine is used to fuse the current collector 2 and the electrode plate 3 onto a welding prevention plate 11 made of, for example, an aluminum plate, as shown in FIG. is placed, and a predetermined amount of pressure and heat is applied to tightly fuse the two.
なお、第４図はホットプレス機の概要を示す説明図であ
り、それぞれプレートヒータを有する上板ホットプレー
ト１２と下板ホットプレート１３との間に、溶着防止板
１１に載置した集電体２と電極板３を配置し、所定圧力
Ｐにて上下から押圧して前処理にて表面をマットフェイ
スにした粗面に、カーボンとゴムとの混練物からなる集
電体を熱融着させ・るものである。In addition, FIG. 4 is an explanatory diagram showing the outline of the hot press machine, in which a current collector placed on the welding prevention plate 11 is placed between the upper hot plate 12 and the lower hot plate 13, each having a plate heater. 2 and electrode plate 3 are arranged, and pressed from above and below at a predetermined pressure P, a current collector made of a mixture of carbon and rubber is thermally fused to the rough surface whose surface has been made matte by pretreatment.・It is something that
第１図における４はセパレータであり、微孔性の例えば
ポリプロピレンなどからなる不織布に電解液が含浸され
て使用され、電解液を含んだ一対の電極体１．１を分離
するように配置されている。Reference numeral 4 in FIG. 1 denotes a separator, which is used by impregnating a microporous non-woven fabric made of polypropylene or the like with an electrolyte, and is arranged to separate the pair of electrode bodies 1.1 containing the electrolyte. There is.
５はガスケットで、非導電性の合成樹脂素材からなる筒
状のもので、その中間部分にはセパレータ４の外縁部分
が埋設され、該セパレータ４を挟んだ電極体１．１を収
納するものである。そして′ｒＬ８ｉ体の電荷を集電す
る集電体２の外縁部分は、ガスケット５の両端面にそれ
ぞれ接触されているので、融着された電極板３．３とガ
スケット５との内部には電解液を含んだ一対の電極体１
．１が封止されていることになる。Reference numeral 5 denotes a gasket, which is made of a non-conductive synthetic resin material and has a cylindrical shape.The outer edge portion of the separator 4 is buried in the middle part of the gasket, and the electrode body 1.1 with the separator 4 sandwiched therein is housed. be. Since the outer edge portion of the current collector 2 that collects the charge of the 'rL8i body is in contact with both end surfaces of the gasket 5, there is no electrolysis inside the fused electrode plate 3.3 and the gasket 5. A pair of electrode bodies 1 containing liquid
．． 1 is sealed.
このように構成された本実施例においては、分極性電極
となる電極体１からの電荷は密接している集電体２に集
電され、さらに前述の熱融着された電極板３に電荷が導
かれるので、集電体２と電極板３間の接触抵抗が低い値
の電気二重層コンデンサが得られることになる。In this embodiment configured as described above, the charge from the electrode body 1 serving as a polarizable electrode is collected by the current collector 2 which is in close contact with it, and the charge is further transferred to the heat-sealed electrode plate 3 described above. As a result, an electric double layer capacitor with a low contact resistance between the current collector 2 and the electrode plate 3 can be obtained.
以上、本発明を上述の実施例によって説明したが、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 with reference to the above embodiments, various modifications can be made 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）
上述のように本発明によれば、電気二重層コンデンサの
集電体と電極板との接合に際し、電極板に前処理を行っ
て表面を粗面に形成し、ホットプレス機を使用して集電
体と熱融着させるので、粗面にされて広い面積となった
部分に集電体が融着され、両者間の接触抵抗は無荷重の
ままで大幅に減少することになり、したがって電気二重
層コンデンサとして内部抵抗値の低いものが得られる利
点がある。(Effects of the Invention) As described above, according to the present invention, when bonding the current collector and the electrode plate of an electric double layer capacitor, the electrode plate is pretreated to form a rough surface, and a hot press machine is used. Since the current collector is thermally fused to the current collector using a , the current collector is fused to the roughened and wide area, and the contact resistance between the two is significantly reduced without any load. Therefore, there is an advantage that an electric double layer capacitor having a low internal resistance value can be obtained.
また本発明によれば、単体にて内部抵抗値の低い電気二
重層コンデンサが得られるため、その積層時や、並列接
続の場合などでも全体としての内部抵抗が低く、性能の
良好なコンデンサを得ることができる。Further, according to the present invention, since an electric double layer capacitor with a low internal resistance value can be obtained as a single unit, a capacitor with a low overall internal resistance and good performance can be obtained even when stacked or connected in parallel. be able to.
第１図は本発明にかかる電気二重層コンデンサの一実施
例を示す断面図、第２図はその円内部分の拡大図、第３
図は電極板と集電体とを融着する際の説明図、第４図は
ホットプレス機の概要を示す説明図、第５図は従来の電
気二重層コンデンサの一例を示す断面図である。
１・・・電極体、２・・・集電体、３・・・電極板、１
０・・・ホットプレス機。FIG. 1 is a cross-sectional view showing one embodiment of the electric double layer capacitor according to the present invention, FIG. 2 is an enlarged view of the circular portion thereof, and FIG.
The figure is an explanatory diagram for fusing an electrode plate and a current collector, Fig. 4 is an explanatory diagram showing an outline of a hot press machine, and Fig. 5 is a sectional view showing an example of a conventional electric double layer capacitor. . DESCRIPTION OF SYMBOLS 1... Electrode body, 2... Current collector, 3... Electrode plate, 1
0...Hot press machine.
Claims (2)
体と、該集電体に接触して端子となる電極板とを備えた
電気二重層コンデンサにおいて、前記電極板の集電体と
の接触面を粗面に形成するとともに、該接触面に集電体
を熱融着せしめたことを特徴とする電気二重層コンデン
サ。(1) An electric double layer capacitor comprising a current collector that collects the electric charge of an electrode body impregnated with an electrolytic solution, and an electrode plate that comes into contact with the current collector and serves as a terminal. An electric double layer capacitor characterized in that a contact surface with an electric body is formed into a rough surface, and a current collector is thermally fused to the contact surface.
面に形成することを特徴とする請求項（１）記載の電気
二重層コンデンサ。(2) The electric double layer capacitor according to claim 1, wherein the surface of the electrode plate is corroded using a corrosive liquid to form a rough surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2083823A JPH03283523A (en) | 1990-03-30 | 1990-03-30 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2083823A JPH03283523A (en) | 1990-03-30 | 1990-03-30 | Electric double layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03283523A true JPH03283523A (en) | 1991-12-13 |
Family
ID=13813416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2083823A Pending JPH03283523A (en) | 1990-03-30 | 1990-03-30 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03283523A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7580243B2 (en) * | 2006-07-14 | 2009-08-25 | Maxwell Technologies, Inc. | Method of making and article of manufacture for an ultracapacitor electrode apparatus |
| US20160012978A1 (en) * | 2014-07-10 | 2016-01-14 | U.S. Army Research Laboratory Attn: Rdrl-Loc-I | Supercapacitor |
| US10269504B2 (en) | 2014-07-10 | 2019-04-23 | The United States Of America As Represented By The Secretary Of The Army | Supercapacitor having holes formed in carbonaceous electrodes for increasing the frequency of operation |
-
1990
- 1990-03-30 JP JP2083823A patent/JPH03283523A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7580243B2 (en) * | 2006-07-14 | 2009-08-25 | Maxwell Technologies, Inc. | Method of making and article of manufacture for an ultracapacitor electrode apparatus |
| US20160012978A1 (en) * | 2014-07-10 | 2016-01-14 | U.S. Army Research Laboratory Attn: Rdrl-Loc-I | Supercapacitor |
| US9466435B2 (en) * | 2014-07-10 | 2016-10-11 | The United States Of America As Represented By The Secretary Of The Army | Supercapacitor |
| US10269504B2 (en) | 2014-07-10 | 2019-04-23 | The United States Of America As Represented By The Secretary Of The Army | Supercapacitor having holes formed in carbonaceous electrodes for increasing the frequency of operation |
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