JPH04152616A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JPH04152616A JPH04152616A JP27882690A JP27882690A JPH04152616A JP H04152616 A JPH04152616 A JP H04152616A JP 27882690 A JP27882690 A JP 27882690A JP 27882690 A JP27882690 A JP 27882690A JP H04152616 A JPH04152616 A JP H04152616A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- electrode
- width
- current
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000003566 sealing material Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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、大きな静電容量が得られる電気二重層コンデ
ンサに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric double layer capacitor that can obtain a large capacitance.
電気二重層コンデンサにおいては、例えば活性炭、カー
ボンおよびバインダーとしてのポリテトラフルオロエチ
レン（ＰＴＦＥ）を混練してシート状とした分極性電極
を備えている。高容量を得るため、従来ではこのシート
状分極性電極を板状もしくは網状の金属からなる集電体
に貼り合せるようにしている。An electric double layer capacitor includes a polarizable electrode formed into a sheet by kneading, for example, activated carbon, carbon, and polytetrafluoroethylene (PTFE) as a binder. In order to obtain high capacity, conventionally, this sheet-like polarizable electrode is bonded to a current collector made of a plate-like or mesh-like metal.
これによれば、例えば１５００Ｆ程度の高容量コンデン
サが得られるのであるが、その電荷を取り出すにあたっ
て、従来ではその集電体に通常のアルミ箔コンデンサと
同様にリード線を取付けるようにしている。しかしなが
ら、通常のリード線では電流許容値が小さいため、大電
流を取り出すことができないという欠点があった。According to this, a high capacitance capacitor of, for example, about 1500F can be obtained, but in order to take out the charge, conventionally, a lead wire is attached to the current collector in the same way as a normal aluminum foil capacitor. However, normal lead wires have a small current permissible value, so they have the drawback of not being able to extract large currents.
本発明は上記従来の欠点を解決するためになされたもの
で、その構成上の特徴は、金属の板状もしくは網体から
なるテープ状集電体の片面にシート状の分極性電極を取
付けて電極体とし、同電極体の一対をセパレータを挟ん
で巻回してなるコンデンサ素子を有する電気二重層コン
デンサにおいて、上記集電体の幅を上記分極性電極の叫
よりも大きくして、同分極性電極の片側にはみ出した状
態のリード部を形成し、同リード部を電極引出し端子と
したことにある。この場合、陰極電極体と陽極電極体と
では、そのリード部が反対側になるようにすることが好
ましい。The present invention was made to solve the above-mentioned conventional drawbacks, and its structural feature is that a sheet-like polarizable electrode is attached to one side of a tape-like current collector made of a metal plate or mesh. In an electric double layer capacitor having an electrode body and a capacitor element formed by winding a pair of the same electrode bodies with a separator in between, the width of the current collector is made larger than the width of the polarizable electrode, and the polarizability is increased. A lead portion protruding from one side of the electrode is formed, and the lead portion is used as an electrode extraction terminal. In this case, it is preferable that the lead portions of the cathode electrode body and the anode electrode body be on opposite sides.
上記構成によると、集電体の一部分がリード部として形
成されているため、その内部抵抗値が小さく大電流の取
り出しが可能になる。According to the above configuration, since a part of the current collector is formed as a lead portion, its internal resistance value is small and a large current can be taken out.
第１図はこの電気二重層コンデンサに用いられる一対の
電極体１，２を互いに分離して示した斜視図である。同
図において、ｌａ、２ａは例えばステンレスなどの金属
からなるテープ状（帯板状）をなす集電体である。この
集電体１ａ、２ａはメツシュメタルもしくはエキスバン
ドメタルなどと呼称されている網状体であってもよい。FIG. 1 is a perspective view showing a pair of electrode bodies 1 and 2 used in this electric double layer capacitor separated from each other. In the figure, la and 2a are tape-shaped (band plate-shaped) current collectors made of metal such as stainless steel, for example. The current collectors 1a and 2a may be a net-like body called mesh metal or expanded metal.
この集電体１ａ、２ａの各々に、シート状の分極性電極
３，３が導電性接着剤などを介して取付けられるのであ
るが、この場合、集電体１ａ。Sheet-like polarizable electrodes 3, 3 are attached to each of the current collectors 1a, 2a via a conductive adhesive, and in this case, the current collector 1a.
２ａの幅は分極性電極３，３の幅よりも大きくなされて
いて１分極性電極３，３の片側に、はみ出した状態のリ
ード部１ｂ、２ｂが形成されるようにしている。すなわ
ち本考案では、同リード部ｌｂ、２ｂを電極引出し端子
として用いるようにしている。なお、分極性電極３，３
には先に説明したのと同様に、例えば活性炭、カーボン
およびバインダーとしてのポリテトラフルオロエチレン
（ＰＴＦＥ）などを混練してシート状としたものが用い
られている。The width of the electrodes 2a is made larger than the width of the polarizable electrodes 3, 3, so that lead portions 1b, 2b protruding from one side of the polarizable electrodes 3, 3 are formed. That is, in the present invention, the lead parts lb and 2b are used as electrode lead terminals. In addition, the polarizable electrodes 3, 3
As described above, for example, a sheet formed by kneading activated carbon, carbon, and polytetrafluoroethylene (PTFE) as a binder is used.
各電極体１，２は、それらの分極性電極３，３が対向す
るように向き合わせられ、そして第２図に示されている
ように、それらの間およびいずれか一方の電極体１，２
の背面側にセパレータ４゜４を配置した状態で巻回され
、コンデンサ素子Ｃとされる。この場合、電極の取り出
しの都合上、第１図のように電極体１，２はそれらのリ
ード部ｌｂ、２ｂが反対側に位置するように対向させら
れることが好ましい。Each electrode body 1, 2 is oriented such that its polarizable electrodes 3, 3 face each other, and as shown in FIG.
It is wound with a separator 4°4 arranged on the back side of the capacitor element C. In this case, for convenience of taking out the electrodes, it is preferable that the electrode bodies 1 and 2 are opposed to each other so that their lead parts lb and 2b are located on opposite sides as shown in FIG.
次に、コンデンサ素子Ｃは所定の電解液（例えば、テト
ラエチルホスホニウム４フツ化ホウ酸）が含浸され、第
３図に示されているように１例えば有底筒状の金属ケー
ス５内に収納され、同ケース５の開口部が適当な電気絶
縁性の封口部材６にて封口される。この場合、例えば電
極体２が陰極側であるとすると、その渦巻状に巻回され
たリード部２ｂの端縁全面が広い接触面をもって金属ケ
ース５の底部に接触することになる。他方、陽極側の電
極体１のリード部１ｂには、封口部材６を貫通する電流
容量の大きな陽極リード棒７が取付けられる。Next, the capacitor element C is impregnated with a predetermined electrolytic solution (for example, tetraethylphosphonium tetrafluoroboric acid), and is housed in, for example, a bottomed cylindrical metal case 5, as shown in FIG. The opening of the case 5 is sealed with a suitable electrically insulating sealing member 6. In this case, for example, if the electrode body 2 is on the cathode side, the entire edge of the spirally wound lead portion 2b will come into contact with the bottom of the metal case 5 with a wide contact surface. On the other hand, an anode lead rod 7 having a large current capacity and passing through the sealing member 6 is attached to the lead portion 1b of the electrode body 1 on the anode side.
このように、集電体１ａ、２ａの一部をリード部１ｂ、
２ｂとしたことにより、同リード部１ｂ。In this way, parts of the current collectors 1a and 2a are connected to the lead parts 1b,
2b, the same lead part 1b.
２ｂの内部抵抗が小さくされ、大電流の取り出しが可能
となる。The internal resistance of 2b is reduced, making it possible to extract a large current.
ここで、直径７７ｍｍ、軸長１２０ｍｍで静電容量１５
００Ｆのコンデンサ素子を用い、その各集電体にリード
線を取付けた従来例と、上記のように各集電体にはみ比
し部を形成し、同部位をリード部とした本発明の実施例
とについて、その内部抵抗値と放この表から分かるよう
に、本発明によると、リード部の内部抵抗が約１／４程
度小さくなり、それに反比例して約４倍もの放電可能電
流が得られる。なお、上記実施例では各集電体の＋１み
出し部（リード部）を陽極側と陰極側で反対方向に配置
しているが、場合によっては、同方向に配置してもよい
。Here, the capacitance is 15 with a diameter of 77 mm and an axial length of 120 mm.
There is a conventional example in which a 00F capacitor element is used and a lead wire is attached to each current collector, and the present invention in which a comparison part is formed on each current collector as described above and the same part is used as a lead part. As can be seen from the table of internal resistance values and discharge for the embodiments, according to the present invention, the internal resistance of the lead portion is reduced by about 1/4, and inversely proportional to this, a dischargeable current of about 4 times is obtained. It will be done. In the above embodiment, the +1 protruding portions (lead portions) of each current collector are arranged in opposite directions on the anode side and the cathode side, but depending on the case, they may be arranged in the same direction.
以上説明したように、本発明によれば、集電体の幅を分
極性電極の幅よりも大きくし、そのはみ出し部を電極取
り出し用のリード部としたことにより、高容量でしかも
大電流の取り出しが可能な電気二重層コンデンサが得ら
れる。As explained above, according to the present invention, the width of the current collector is made larger than the width of the polarizable electrode, and the protruding part is used as the lead part for taking out the electrode, thereby achieving high capacity and large current. A removable electric double layer capacitor is obtained.
図はいずれも本発明の実施例に係るもので、第１図はコ
ンデンサ素子を構成する一対の電極体を分離して示した
斜視図、第２図はセパレータを挟みながら同電極体を巻
回する状態を示した説明図、第３図はコンデンサ素子を
金属ケース内に収納した最終製品状態の一例を示した断
面図である。
図中、１，２は電極体、ｌａ、２ａは集電体、ｌｂ、２
ｂはリード部、３は分極性電極、４はセパレータ、５は
金属ケース、６は封口部材、７は陽極リード棒、Ｃはコ
ンデンサ素子である。The figures are all related to embodiments of the present invention. Figure 1 is a perspective view showing a pair of electrode bodies that constitute a capacitor element separated, and Figure 2 is a perspective view of the electrode bodies being wound with a separator in between. FIG. 3 is a sectional view showing an example of a final product state in which a capacitor element is housed in a metal case. In the figure, 1 and 2 are electrode bodies, la and 2a are current collectors, and lb and 2
b is a lead portion, 3 is a polarizable electrode, 4 is a separator, 5 is a metal case, 6 is a sealing member, 7 is an anode lead rod, and C is a capacitor element.
Claims (2)
の片面にシート状の分極性電極を取付けて電極体とし、
同電極体の一対をセパレータを挟んで巻回してなるコン
デンサ素子を有する電気二重層コンデンサにおいて、上
記集電体の幅を上記分極性電極の幅よりも大きくして、
同分極性電極の片側にはみ出した状態のリード部を形成
し、同リード部を電極引出し端子としたことを特徴とす
る電気二重層コンデンサ。(1) A sheet-shaped polarizable electrode is attached to one side of a tape-shaped current collector made of a metal plate or mesh to form an electrode body;
In an electric double layer capacitor having a capacitor element formed by winding a pair of the same electrode bodies with a separator in between, the width of the current collector is larger than the width of the polarizable electrode,
An electric double layer capacitor characterized in that a lead portion protruding from one side of a homopolarizable electrode is formed, and the lead portion is used as an electrode extraction terminal.
反対側に配置されている請求項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 the lead portions are arranged on opposite sides of the cathode electrode body and the anode electrode body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27882690A JP3013047B2 (en) | 1990-10-17 | 1990-10-17 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27882690A JP3013047B2 (en) | 1990-10-17 | 1990-10-17 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04152616A true JPH04152616A (en) | 1992-05-26 |
| JP3013047B2 JP3013047B2 (en) | 2000-02-28 |
Family
ID=17602697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27882690A Expired - Lifetime JP3013047B2 (en) | 1990-10-17 | 1990-10-17 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3013047B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04286108A (en) * | 1991-03-14 | 1992-10-12 | Matsushita Electric Ind Co Ltd | Electric double layer capacitor |
| JP2006210960A (en) * | 1999-03-02 | 2006-08-10 | Matsushita Electric Ind Co Ltd | Process for manufacturing capacitor |
| JP2012174835A (en) * | 2011-02-21 | 2012-09-10 | Nec Tokin Corp | Electric double layer capacitor |
-
1990
- 1990-10-17 JP JP27882690A patent/JP3013047B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04286108A (en) * | 1991-03-14 | 1992-10-12 | Matsushita Electric Ind Co Ltd | Electric double layer capacitor |
| JP2006210960A (en) * | 1999-03-02 | 2006-08-10 | Matsushita Electric Ind Co Ltd | Process for manufacturing capacitor |
| JP2012174835A (en) * | 2011-02-21 | 2012-09-10 | Nec Tokin Corp | Electric double layer capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3013047B2 (en) | 2000-02-28 |
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