JPH03124013A - Electric double layer capacitor - Google Patents
Electric double layer capacitorInfo
- Publication number
- JPH03124013A JPH03124013A JP1261365A JP26136589A JPH03124013A JP H03124013 A JPH03124013 A JP H03124013A JP 1261365 A JP1261365 A JP 1261365A JP 26136589 A JP26136589 A JP 26136589A JP H03124013 A JPH03124013 A JP H03124013A
- Authority
- JP
- Japan
- Prior art keywords
- solid
- polarizable
- polarizable electrode
- activated carbon
- double layer
- 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 description 11
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005470 impregnation Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010220 ion permeability Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 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
本発明は、含浸材を具えた電気二重層コンデンサに関す
るものである。The present invention relates to an electric double layer capacitor provided with an impregnating material.
電気二重層コンデンサにおいて、セパレータ付近のイオ
ン透過性を良くし、内部抵抗を小にするために、セパレ
ータに隣接して電解液をよく浸み込ませる含浸材を配設
したものがある（特開平１１３６３２５号公報参照）。
第３図に、そのような従来の電気二重層コンデンサを示
す、第３図において、１０．１１は集電体、１２．１３
は金属ネット、１４．１５は有機導電性プラスチック、
１６．１７は分極性電極、１８は含浸材、１９はセパレ
ータ、２０はパツキンである。
分極性電極１６．１７は活性炭繊維で構成されており、
これには電解液が含浸させである。セパレータ１９に隣
接して配設する含浸材１日としては、ポリプロピレン製
の不織布が用いられる。
金属ネット１２．１３は、集電体ｉｏ、ｚと有機導電性
プラスチック１４．１５に弾性的に接触し、両者の間の
電気的接続を媒介する。
有機導電性プラスチック１４，１５は、金属ネッ）１２
．１３と分極性電極１６．１７との電気的接触を良くす
るためのものであり、これには分極性ｆｆ＃！ｉ１６．
１７に用いる活性炭繊維がラミネートされている。In some electric double layer capacitors, in order to improve ion permeability near the separator and reduce internal resistance, an impregnating material is placed adjacent to the separator to allow the electrolyte to penetrate well (Japanese Patent Laid-Open No. (See Publication No. 1136325). FIG. 3 shows such a conventional electric double layer capacitor. In FIG. 3, 10.11 is a current collector, and 12.13 is a current collector.
is metal net, 14.15 is organic conductive plastic,
16 and 17 are polarizable electrodes, 18 is an impregnation material, 19 is a separator, and 20 is a packing. The polarizable electrodes 16.17 are composed of activated carbon fibers,
This is impregnated with an electrolyte. As the impregnating material disposed adjacent to the separator 19, a nonwoven fabric made of polypropylene is used. The metal net 12.13 elastically contacts the current collectors io, z and the organic conductive plastic 14.15 and mediates the electrical connection between them. The organic conductive plastics 14 and 15 are metal nets) 12
．． 13 and the polarizable electrodes 16 and 17, and includes the polarizability ff#! i16.
The activated carbon fiber used in No. 17 is laminated.
（問題点）
しかしながら、前記した従来の電気二重層コンデンサに
は、次のような問題点があった。
第１の問題点は、含浸材に含浸された電解液が分極性電
極の対向間隙を通って周囲に漏れて行き易いという点で
ある。
第２の問題点は、含浸材およびセパレータに撓みが生じ
、分極性電極と集電体との間の電気的接続が悪くなると
いう点である。
（問題点の説明）
まず、第１の問題点について説明する。従来の電気二重
層コンデンサでは、含浸材が分極性電極の外周より外に
はみ出るところまで配設されている。従って、含浸材に
含浸されている電解液は、分極性電極より外に漏れて行
き易かった。
次に、第２の問題点について説明する。当初、含浸材や
セパレータが水平に張設されていても、上部の分極性電
極の重みがかかっているので、年月を経るにつれ、分極
性電極の沈降等によりどうしても撓んで来る。
僅かの撓みのうちは、弾性を有する金属ネットにより吸
収され、集電体と分極性電極間の電気的接続は、それほ
ど悪くはならない。しかし、撓みが大きくなるにつれ吸
収しきれなくなり、電気的接続は悪くなる。従って、接
触抵抗が増加し、電気二重層コンデンサの内部抵抗が増
加することになる。
本発明は、以上のような問題点を解決することを課題と
するものである。(Problems) However, the conventional electric double layer capacitor described above has the following problems. The first problem is that the electrolytic solution impregnated with the impregnating material tends to leak into the surroundings through the opposing gap between the polarizable electrodes. The second problem is that the impregnating material and the separator are bent, resulting in poor electrical connection between the polarizable electrode and the current collector. (Description of Problem) First, the first problem will be explained. In conventional electric double layer capacitors, the impregnating material is disposed to the extent that it protrudes beyond the outer periphery of the polarizable electrode. Therefore, the electrolytic solution impregnated into the impregnating material was likely to leak out from the polarizable electrode. Next, the second problem will be explained. Even if the impregnating material and separator are initially stretched horizontally, because of the weight of the polarizable electrodes on top, over time they will inevitably become warped due to settling of the polarizable electrodes. A slight amount of deflection is absorbed by the elastic metal net, and the electrical connection between the current collector and the polarizable electrode is not deteriorated so much. However, as the deflection increases, it becomes impossible to absorb it, and the electrical connection deteriorates. Therefore, the contact resistance increases and the internal resistance of the electric double layer capacitor increases. An object of the present invention is to solve the above-mentioned problems.
前記課題を解決するため、本発明の電気二重層コンデン
サでは、セパレータを境えて対向する面の中央部に凹部
を存する固形分極性電極を具え、該凹部に電解液を含浸
した含浸材を充填することとした。In order to solve the above problems, the electric double layer capacitor of the present invention includes a solid polarizable electrode having a recess in the center of the opposing surfaces with a separator in between, and the recess is filled with an impregnating material impregnated with an electrolyte. I decided to do so.
分極性電極が固形状であるので分極性電極は沈降せず、
年月を経ても集電体と分極性電極との間の電気的接続が
悪くなることはない。
また、該固形分極性電極同士の対向面の中央部に凹部を
設け、そこに含浸材を充填したので、含浸材は周囲の閉
じられた空間に充填されることになる。そのため、分極
性電極の周囲に漏れ出る電解液の量を極めて少なくする
ことが可能となる。Since the polarizable electrode is solid, the polarizable electrode does not settle.
The electrical connection between the current collector and the polarizable electrode does not deteriorate over time. Furthermore, since a recess was provided in the center of the opposing surfaces of the solid polarizable electrodes and filled with the impregnating material, the surrounding closed space was filled with the impregnating material. Therefore, it becomes possible to extremely reduce the amount of electrolyte leaking around the polarizable electrode.
以下、本発明の実施例を図面に基づいて詳細に説明する
。
第１図に、本発明の実施例にかかわる電気二重層コンデ
ンサを示し、第２図に、それに使用する固形分極性電極
を示す。これらの図において、１．２は集電体、３，４
は固形分極性電極、３−１．４−１は凹部、５は含浸材
、６はセパレータ、７はガスケットである。
集電体１．２としては、導電性ゴム等が用いられる。固
形分極性電極３．４は、活性炭粒子を焼結成型して固形
と成した分極性電極であるが、それらのセパレーク６を
境えて対向する面の中央部には、浅い凹部３−１．４−
１が、それぞれ設けられる。これらの凹部には、含浸材
５が充填される。
含浸材５としては、活性炭粒子や活性炭繊維等を用い、
これらと電解液を混合してペースト状にしたものを充填
する。
ガスケット７は、分極性電極を周囲のものから絶縁する
ためのものであり、例えば、絶縁性ゴムが用いられる。
上記のような構成にすると、分極性電極は固形状のもの
であるから、年月を経ても沈降しない。
従って、集電体との間に隙間が出来ることはなく、電気
的接続が悪くなることはない。それに伴い、電気的接続
を媒介する金属ネットのような弾性導電体も不要となる
。
更に、含浸材５は、固形分極性電極３，４を対向するこ
とによって形成されるところの周囲が閉じられた薄い凹
部に収容されるので、周囲に漏れ出る電解液の量は、著
しく低減される。従って、長期間にわたってイオン透過
性を良好に保つと共に、内部抵抗を小に保つ。Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an electric double layer capacitor according to an embodiment of the present invention, and FIG. 2 shows a solid polarizable electrode used therein. In these figures, 1.2 is the current collector, 3, 4
3-1.4-1 is a recessed portion, 5 is an impregnating material, 6 is a separator, and 7 is a gasket. As the current collector 1.2, conductive rubber or the like is used. The solid polarizable electrode 3.4 is a polarizable electrode made into a solid by sintering activated carbon particles, and a shallow recess 3-1. 4-
1 are provided respectively. These recesses are filled with impregnating material 5. As the impregnating material 5, activated carbon particles, activated carbon fibers, etc. are used,
A paste made by mixing these and electrolyte is filled. The gasket 7 is for insulating the polarizable electrode from surrounding things, and is made of, for example, insulating rubber. With the above configuration, since the polarizable electrode is solid, it will not settle over time. Therefore, no gap will be formed between the current collector and the electrical connection will not deteriorate. Accordingly, an elastic conductor such as a metal net that mediates electrical connection is also unnecessary. Further, since the impregnating material 5 is accommodated in a thin recess with a closed circumference formed by opposing the solid polarizable electrodes 3 and 4, the amount of electrolyte leaking out to the surroundings is significantly reduced. Ru. Therefore, good ion permeability is maintained over a long period of time, and internal resistance is kept low.
以上述べた如く、本発明によれば、次のような効果を奏
する。
■ 含浸材は、固形分極性電極を対向した時に出来ると
ころの周囲が閉しられた凹部に充填されるので、固形分
極性電極の周囲に漏れ出る電解液の量を極めて少なくす
ることが出来る。
■ 分極性電極が固形状であるので撓みを生ぜず、年月
を経ても集電体と分極性電極との間の電気的接続が悪く
なることはない。
■ 集電体と分極性電極との電気的接続を媒介する金属
ネットのような弾性導電体が不要となる。
第２図・・・固形分極性電極
第３図・・・従来の電気二重層コンデンサ図において、
１，２は集電体、３，４は固形分極性電極、３−１．４
−１は凹部、５は含浸材、６はセパレータ、７はガスケ
ット、ｉｏ、１ｉは集電体、１２．１３は金属ネット、
１４．１５は有機導電性プラスチック、１６．１７は分
極性電極、１８は含浸材、Ｉ９はセパレータ、２０はパ
ツキンである。As described above, the present invention provides the following effects. (2) Since the impregnating material is filled into the closed recess formed when the solid polarizable electrodes are faced, the amount of electrolyte leaking around the solid polarizable electrodes can be extremely reduced. - Since the polarizable electrode is solid, it does not bend, and the electrical connection between the current collector and the polarizable electrode does not deteriorate even over time. ■ There is no need for an elastic conductor such as a metal net that mediates the electrical connection between the current collector and the polarizable electrode. Figure 2: Solid polarizable electrode Figure 3: In the diagram of a conventional electric double layer capacitor,
1 and 2 are current collectors, 3 and 4 are solid polarizable electrodes, 3-1.4
-1 is a recess, 5 is an impregnation material, 6 is a separator, 7 is a gasket, io, 1i are current collectors, 12.13 is a metal net,
14.15 is an organic conductive plastic, 16.17 is a polarizable electrode, 18 is an impregnating material, I9 is a separator, and 20 is a packing.
Claims (1)
固形分極性電極を具え、該凹部に電解液を含浸した含浸
材を充填したことを特徴とする電気二重層コンデンサ。An electric double layer capacitor comprising a solid polarizable electrode having a concave portion in the center of opposing surfaces with a separator in between, the concave portion being filled with an impregnating material impregnated with an electrolytic solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1261365A JPH03124013A (en) | 1989-10-06 | 1989-10-06 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1261365A JPH03124013A (en) | 1989-10-06 | 1989-10-06 | Electric double layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03124013A true JPH03124013A (en) | 1991-05-27 |
Family
ID=17360829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1261365A Pending JPH03124013A (en) | 1989-10-06 | 1989-10-06 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03124013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6324049B1 (en) | 1996-12-09 | 2001-11-27 | Nec Corporation | Electric double layer capacitor |
| JP2011044746A (en) * | 2010-11-29 | 2011-03-03 | Mitsubishi Electric Corp | Electric double-layer capacitor |
| KR101673960B1 (en) * | 2015-10-21 | 2016-11-08 | 주식회사 성조파인세라믹 | Ceramic ball-maker with parallel measurement fuction |
-
1989
- 1989-10-06 JP JP1261365A patent/JPH03124013A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6324049B1 (en) | 1996-12-09 | 2001-11-27 | Nec Corporation | Electric double layer capacitor |
| JP2011044746A (en) * | 2010-11-29 | 2011-03-03 | Mitsubishi Electric Corp | Electric double-layer capacitor |
| KR101673960B1 (en) * | 2015-10-21 | 2016-11-08 | 주식회사 성조파인세라믹 | Ceramic ball-maker with parallel measurement fuction |
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