JPH0425008A - Energy reserving device - Google Patents
Energy reserving deviceInfo
- Publication number
- JPH0425008A JPH0425008A JP2126226A JP12622690A JPH0425008A JP H0425008 A JPH0425008 A JP H0425008A JP 2126226 A JP2126226 A JP 2126226A JP 12622690 A JP12622690 A JP 12622690A JP H0425008 A JPH0425008 A JP H0425008A
- Authority
- JP
- Japan
- Prior art keywords
- case
- case member
- current collector
- energy storage
- storage device
- 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
- 238000004146 energy storage Methods 0.000 claims description 9
- 239000000615 nonconductor Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 14
- 239000000853 adhesive Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 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
- 239000002131 composite material Substances 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はコインセル状をなず電気二重層コンデンサやリ
チウム二次電池などのエネルギー貯蔵装置に関し、さら
に詳しく言えば、そのセルケースに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an energy storage device such as a coin cell-shaped electric double layer capacitor or a lithium secondary battery, and more specifically, to a cell case thereof. .
第４図のコイン型セルとして形成された電気二重層コン
デンサを例にとって説明すると、同コンデンサ１は底の
浅い皿状のケース本体２と、同ケ−ス本体２に被せられ
るキャップ３とを備えている。ケース本体２とキャップ
３は、ともにステンレス材からなり、その各底部には分
極性電極４゜５が導電性接着材６，６を介して取付けら
れている。ケース本体２とキャップ３とを組合せるにあ
たって、各分極性電極４，５間にセパレータ７が配置さ
れるとともに、ケース本体２内にガスケット８が装着さ
れる。キャップ３をケース本体２に被せたのち、同ケー
ス本体２の周縁部がガスケラ１〜８を介してキャップ３
の周縁部を包み込むように内側に向けてかしめられる。Taking the electric double layer capacitor formed as a coin-shaped cell shown in FIG. 4 as an example, the capacitor 1 includes a dish-shaped case body 2 with a shallow bottom and a cap 3 that is placed over the case body 2. ing. The case body 2 and the cap 3 are both made of stainless steel, and polarizable electrodes 4.5 are attached to the bottoms of each of them via conductive adhesives 6, 6. In assembling the case body 2 and the cap 3, a separator 7 is placed between each polarizable electrode 4, 5, and a gasket 8 is installed inside the case body 2. After the cap 3 is placed on the case body 2, the peripheral edge of the case body 2 is attached to the cap 3 through the gas keras 1 to 8.
It is caulked inward so as to wrap around the periphery of the
上記のようにしてコイン型もしくはボタン型のコンデン
サセルが形成されるのであるが、これにはいくつかの欠
点がある。すなわち、ケース本体２とキャップ３の接合
をかしめによって行なっているため、その周縁に電気的
に何等寄与しないフランジ部（かしめ代）９が形成され
ることになり、その分径が大きくならざるを得ない。ま
た、その接合部にはガスケット８が介在されるもののそ
の一
信頼性に難があり、気密性や漏液などが問題とされる。Although coin- or button-shaped capacitor cells are formed as described above, they have several drawbacks. That is, since the case body 2 and the cap 3 are joined by caulking, a flange portion (caulking margin) 9 is formed on the periphery of the flange portion (caulking margin) that does not contribute electrically in any way, and the diameter of the flange portion (caulking margin) is inevitably increased. I don't get it. Further, although a gasket 8 is interposed at the joint, its reliability is poor, and problems such as airtightness and liquid leakage arise.
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」二の特徴は、金属製のケース内に一対の
電極をセパレータを挟んで対向させた状態で収納してな
るエネルギー貯蔵装置において、互いに組合せられその
接合部がレーザーによリシーム溶接されて上記ケースを
構成する第１および第２のケースメンバーを有し、電極
の一方は第１のケースメンバーに電気的に接続され、他
方の電極には第２のケースメンバーに対して電気的にｔ
ｅ縁された集電体が取付けられるとともに、同第２のケ
ースメンバーには集電体を外部に引出すための透孔が穿
設されていることにある。The present invention has been made to solve the above-mentioned conventional drawbacks, and its second feature is an energy storage system in which a pair of electrodes are housed in a metal case facing each other with a separator in between. The apparatus includes first and second case members that are combined with each other and their joints are reseam-welded by laser to constitute the case, one of the electrodes being electrically connected to the first case member, The other electrode is electrically connected to the second case member.
An edged current collector is attached to the second case member, and a through hole is formed in the second case member to draw the current collector to the outside.
第１および第２のケースメンバーはその端面同士が突き
合わせられてシーム溶接されてもよいし、その一方が他
方に嵌合した状態でシーム溶接されてもよい。また、第
２のケースメンバー内には、同ケースメンバーと集電体
とを電気的に絶縁するとともに、透孔を気密的に閉塞す
る合成樹脂製の電気絶縁体が設けられる。さらに、集電
体には透孔を貫通してケース外に引出されるリード端子
を形成することが好ましい。The end surfaces of the first and second case members may be butted against each other and seam welded, or one of them may be seam welded while being fitted into the other. Furthermore, an electrical insulator made of synthetic resin is provided within the second case member to electrically insulate the case member and the current collector and to airtightly close the through hole. Furthermore, it is preferable to form a lead terminal on the current collector so as to pass through the through hole and be drawn out from the case.
上記構成によると、第１のケースメンバーと第２のケー
スメンバーとがシーム溶接により接合されるため、全体
の径寸法が小さくなるとともに、気密性が高められ、漏
液などが生ずるおそれは殆どない。一方の例えば陰極側
の電極は直接的もしくは導電性接着材を介してケースに
接続され、他方の例えば陽極側の電極は集電体より外部
に引出される。According to the above configuration, since the first case member and the second case member are joined by seam welding, the overall diameter is reduced, airtightness is improved, and there is almost no risk of liquid leakage. . One electrode, for example on the cathode side, is connected to the case directly or via a conductive adhesive, and the other electrode, for example on the anode side, is drawn out from the current collector.
以下、本発明の実施例を第１図および第３図を参照しな
がら詳細に説明する。Embodiments of the present invention will be described in detail below with reference to FIGS. 1 and 3.
この実施例は電気二重層コンデンサについてのもので、
第１図と第２図に示されているように、同コンデンサＩ
Ｏは、互いに組み合わされて−っのケース１１を構成す
る第１および第２のケースメンバー１１ａ、Ｉｌｂとを
備えている。各ケースメンバーｌｌａ、Ｉｌｂはともに
同種のステンレス材（例えば５ＵＳ３０４．５ＩＪＳ３
１６Ｌなど）からなり、この実施例においては、双方と
もに底の浅い皿状をなす同じ大きさに形成されている。This example is about an electric double layer capacitor.
As shown in FIGS. 1 and 2, the same capacitor I
O includes first and second case members 11a and Ilb which are combined with each other to constitute a case 11 of -. Each case member lla, Ilb is made of the same type of stainless steel (for example, 5US304.5IJS3).
16L, etc.), and in this embodiment, both are formed to have the same size and form a shallow dish shape.
なお、第２のケースメンバー１１ｂの底部のほぼ中央に
は所定の大きさの透孔】２が穿設されている。Note that a through hole 2 of a predetermined size is bored approximately in the center of the bottom of the second case member 11b.
第１のケースメンバー１１ａの底部には、導電性接着材
１３を介して一方の分極性電極１４が取付けられる。ま
た、第２のケースメンバー１１ｂ側には、他方の分極性
電極１５が設けられるのであるが、この場合、同分極性
電極１５には集電体１６が添設される。この集電体１６
はステンレス材、アルミニウム材、ニッケル材などの単
体もしくは複合体がらなり、第２のケースメンバー１１
ｂ側には、同ケースメンバー１１ｂと集電体１６とを電
気的に絶縁する電気絶縁層１７が設けられる。すなわち
、分極性電極１５は集電体１６とともに電気絶縁層１７
を介して第２のケースメンバー１１ｂの底部に取付けら
れる。集電体１６には第２のケースメンバー１１ｂに穿
設されている透孔１２を貫通して外部に引出されるリー
ド端子１６ａが形成されている。なお、リード端子１６
ａが貫通された透孔１２は電気絶縁層１７にて気密的に
閉塞される。One polarizable electrode 14 is attached to the bottom of the first case member 11a via a conductive adhesive 13. Further, the other polarizable electrode 15 is provided on the second case member 11b side, and in this case, a current collector 16 is attached to the same polarizable electrode 15. This current collector 16
The second case member 11 is made of a single material or a composite material such as stainless steel, aluminum, or nickel.
On the b side, an electrical insulating layer 17 that electrically insulates the case member 11b and the current collector 16 is provided. That is, the polarizable electrode 15 is connected to the electrically insulating layer 17 together with the current collector 16.
It is attached to the bottom of the second case member 11b via. A lead terminal 16a is formed in the current collector 16 and extends to the outside through a through hole 12 formed in the second case member 11b. Note that the lead terminal 16
The through hole 12 through which a is penetrated is hermetically closed with an electrically insulating layer 17.
この電気二重層コンデンサ１０を組み立てるにあたって
、各分極性電極１４．１５に所定の電解液が含浸される
とともに、それらの間にセパレータ１８が配置される。In assembling this electric double layer capacitor 10, each polarizable electrode 14, 15 is impregnated with a predetermined electrolytic solution, and a separator 18 is placed between them.
次に、第１および第２のケースメンバー１］、ａ 、
１．１ｂの端面同士を突合せて、その接合部１９を図示
しないレーザー、好ましくはＹＡＧレーザーにてシーム
溶接する。Next, the first and second case members 1], a,
The end faces of 1.1b are butted against each other, and the joint 19 is seam-welded using a laser (not shown), preferably a YAG laser.
このようにして、例えばケース１１側がマイナス電極で
、リード端子１６ａがプラス電極とされたコイン状のコ
ンデンサセルが得られる。なお、第１および第２のケー
スメンバー１１ａ、ｌｌｂの高さ（ケース１１の軸方向
長さ）をそれぞれＡ、Ｂとすると、この例ではＡ：Ｂ＝
１：１であるが、Ａ：Ｂ＝１：３〜３：１までの範囲で
任意に選択することができる。In this way, for example, a coin-shaped capacitor cell is obtained in which the case 11 side is a negative electrode and the lead terminal 16a is a positive electrode. Note that if the heights of the first and second case members 11a and llb (the axial lengths of the case 11) are A and B, respectively, then in this example, A:B=
Although the ratio is 1:1, it can be arbitrarily selected within the range of A:B = 1:3 to 3:1.
また、第３図に変形例として示されているように、例え
ば第１．のケースメンバー１１ａ′をその内部に第２の
ケースメンバー１１ｂが嵌合し得るような大きさに形成
し、同ケースメンバー１１ａ′の端面２０の部分をシー
ム溶接するようにしてもよい。Further, as shown in FIG. 3 as a modification, for example, the first. The case member 11a' may be formed in a size such that the second case member 11b can fit therein, and the end surface 20 of the case member 11a' may be seam welded.
この電気二重層コンデンサ１０においては、一方の例え
ば陰極側の分極性電極１４は直接的もしくは導電性接着
材１３を介してケース１１に電気的に接続され、他方の
例えば陽極側の分極性電極１５は直接的もしくは図示省
略の導電性接着材を介して集電体１６に接続され、同集
電体Ｉ６より外部に引出される。なお、上記実施例では
集電体１６にそれと一体にリード端子１６ａを形成して
いるが、集電体１６を単なる一枚板とし、外部からそれ
にリード端子を接触できるようにしてもよい。また、電
極引出し用の透孔１２をケースメンバー１１ｂの底部側
方に配置してもよい。In this electric double layer capacitor 10, one polarizable electrode 14 on the cathode side, for example, is electrically connected to the case 11 either directly or via a conductive adhesive 13, and the other polarizable electrode 15, for example on the anode side, is electrically connected to the case 11 directly or via a conductive adhesive 13. is connected to the current collector 16 directly or via a conductive adhesive (not shown), and is drawn out from the current collector I6. In the above embodiment, the lead terminals 16a are formed integrally with the current collector 16, but the current collector 16 may be a single plate so that the lead terminals can be contacted from the outside. Further, the through hole 12 for drawing out the electrode may be arranged on the bottom side of the case member 11b.
本発明は上記実施例の電気二重層コンデンサに限定され
るものではなく、冒頭にも述べたように例えばリチウム
二次電池などにも適用可能である。The present invention is not limited to the electric double layer capacitor of the above embodiment, but is also applicable to, for example, a lithium secondary battery, as mentioned at the beginning.
以上説明したように、本発明によれば、シーム溶接より
なるケースを用いたことにより、径寸法がより小さく、
しかも気密性が高いことから、漏液などが生ずることの
ないエネルギー貯蔵装置が提供される。As explained above, according to the present invention, by using a case made of seam welding, the diameter dimension is smaller.
Moreover, since it is highly airtight, an energy storage device that does not cause liquid leakage is provided.
第１図は本発明が適用された電気二重層コンデンサにつ
いての一実施例を示した断面図、第２図は同実施例の平
面図、第３図は変形例を示した断面図、第４図は従来例
を示した断面図である。
図中、１０は電気二重層コンデンサ、１１はケース、１
１ａ、ｌｌｂはケースメンバー、１２は透孔、１３は導
電性接着材、１４．１５は分極性電極、１６は集電体、
１７は電気絶縁体、１８はセパレータ。FIG. 1 is a sectional view showing one embodiment of an electric double layer capacitor to which the present invention is applied, FIG. 2 is a plan view of the same embodiment, FIG. 3 is a sectional view showing a modified example, and FIG. The figure is a sectional view showing a conventional example. In the figure, 10 is an electric double layer capacitor, 11 is a case, 1
1a and llb are case members, 12 is a through hole, 13 is a conductive adhesive, 14.15 is a polarizable electrode, 16 is a current collector,
17 is an electrical insulator, and 18 is a separator.
Claims (5)
んで対向させた状態で収納してなるエネルギー貯蔵装置
において、互いに組合せられその接合部がレーザーによ
りシーム溶接されて上記ケースを構成する第１および第
２のケースメンバーを有し、上記電極の一方は上記第１
のケースメンバーに電気的に接続され、上記他方の電極
には上記第２のケースメンバーに対して電気的に絶縁さ
れた集電体が取付けられるとともに、同第２のケースメ
ンバーには上記集電体を外部に引出すための透孔が穿設
されていることを特徴とするエネルギー貯蔵装置。(1) In an energy storage device in which a pair of electrodes are housed in a metal case facing each other with a separator in between, the electrodes are combined with each other and their joints are seam welded by a laser to form the case. and a second case member, wherein one of the electrodes is connected to the first case member.
A current collector electrically insulated from the second case member is attached to the other electrode, and the second case member is electrically connected to the current collector. An energy storage device characterized by having a through hole for drawing the body to the outside.
面同士が突き合わせられてシーム溶接される請求項１に
記載のエネルギー貯蔵装置。(2) The energy storage device according to claim 1, wherein the first and second case members are seam-welded with their end surfaces butted against each other.
方が他方に嵌合した状態でシーム溶接される請求項１に
記載のエネルギー貯蔵装置。(3) The energy storage device according to claim 1, wherein the first and second case members are seam-welded with one fitted to the other.
バーと上記集電体とを電気的に絶縁するとともに、上記
透孔を気密的に閉塞する合成樹脂製の電気絶縁体が設け
られる請求項１に記載のエネルギー貯蔵装置。(4) A synthetic resin electrical insulator is provided in the second case member to electrically insulate the case member and the current collector and to airtightly close the through hole. Item 1. Energy storage device according to item 1.
引出されるリード端子が形成されている請求項１に記載
のエネルギー貯蔵装置。(5) The energy storage device according to claim 1, wherein the current collector is formed with a lead terminal that penetrates the through hole and is drawn out of the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2126226A JPH0425008A (en) | 1990-05-16 | 1990-05-16 | Energy reserving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2126226A JPH0425008A (en) | 1990-05-16 | 1990-05-16 | Energy reserving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0425008A true JPH0425008A (en) | 1992-01-28 |
Family
ID=14929884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2126226A Pending JPH0425008A (en) | 1990-05-16 | 1990-05-16 | Energy reserving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0425008A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244226A (en) * | 1998-03-04 | 1999-09-14 | Fuji Photo Optical Co Ltd | Treatment tool insertion channel for slant-view endoscope |
| JP2018045901A (en) * | 2016-09-15 | 2018-03-22 | 三洋化成工業株式会社 | Lithium ion battery and method for manufacturing the same |
| JP2020072061A (en) * | 2018-11-02 | 2020-05-07 | セイコーインスツル株式会社 | Electrochemical cell and manufacturing method thereof |
| WO2021149644A1 (en) * | 2020-01-20 | 2021-07-29 | 株式会社村田製作所 | Secondary battery and manufacturing method for same |
-
1990
- 1990-05-16 JP JP2126226A patent/JPH0425008A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244226A (en) * | 1998-03-04 | 1999-09-14 | Fuji Photo Optical Co Ltd | Treatment tool insertion channel for slant-view endoscope |
| JP2018045901A (en) * | 2016-09-15 | 2018-03-22 | 三洋化成工業株式会社 | Lithium ion battery and method for manufacturing the same |
| JP2020072061A (en) * | 2018-11-02 | 2020-05-07 | セイコーインスツル株式会社 | Electrochemical cell and manufacturing method thereof |
| WO2021149644A1 (en) * | 2020-01-20 | 2021-07-29 | 株式会社村田製作所 | Secondary battery and manufacturing method for same |
| JPWO2021149644A1 (en) * | 2020-01-20 | 2021-07-29 |
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