JP2765079B2 - Sealed battery - Google Patents
Sealed batteryInfo
- Publication number
- JP2765079B2 JP2765079B2 JP1203304A JP20330489A JP2765079B2 JP 2765079 B2 JP2765079 B2 JP 2765079B2 JP 1203304 A JP1203304 A JP 1203304A JP 20330489 A JP20330489 A JP 20330489A JP 2765079 B2 JP2765079 B2 JP 2765079B2
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- battery
- electrode
- sealing plate
- lead
- 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.)
- Expired - Lifetime
Links
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
- Y02E60/10—Energy storage using batteries
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、密閉型電池の集電体に関するものである。Description: TECHNICAL FIELD The present invention relates to a current collector for a sealed battery.
従来の技術 一般にニッケルカドミウム蓄電池等の密閉型電池にお
いて、正極集電体の構成は、第５図に示すように極板端
縁を覆うように溶接される集電部51とそれから導出され
るリード部52とからなる。2. Description of the Related Art Generally, in a sealed battery such as a nickel cadmium storage battery, the configuration of a positive electrode current collector includes a current collector 51 welded so as to cover an edge of an electrode plate and a lead derived therefrom as shown in FIG. And 52.
発明が解決しようとする課題 しかしながら上記の従来の構成では、リード部の幅を
広くとることができないこと、封口板までの距離が長く
なることのため、リード部の内部抵抗が大きく、また、
リード部のねじれにより封口板への溶接ができにくくな
る様な不具合が発生するという欠点を有していた。Problems to be Solved by the Invention However, in the above-described conventional configuration, the width of the lead cannot be widened, and the distance to the sealing plate is long, so that the internal resistance of the lead is large, and
There was a drawback that the twisting of the lead portion caused a problem that welding to the sealing plate became difficult.
本発明は上記従来の問題点を解決するもので、電池内
部抵抗を低減化し、リード部のねじれによる封口板への
溶接不良を減少させた密閉型電池を提供することを目的
とする。An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a sealed battery in which the internal resistance of the battery is reduced and welding defects to the sealing plate due to torsion of the lead are reduced.
課題を解決するための手段 この目的を達成するために本発明の密閉型電池は、
陽，陰極板とこれら極板間に介挿された接セパレータと
よりなる電極体と、この電極体を収容する電池外装缶
と、外装缶の溝入部に絶縁パッキングを対して設置され
る封口板と、前記電極体と封口板との間を電気的に接続
する集電体とを備えた電池であって、前記集電体は、円
板の一部に中央に向け切り込みを入れて切り起こした、
前記封口板に溶接させるリード部と、前記電極体の一端
面に設けた突出する極板端縁に溶接される集電部とを有
し、前記外装缶の溝入部の内径の中心からリード部の立
ち上がり部までの距離ｌが、前記溝入部内径の半径r1に
対して、 であり、かつ前集電体におけるリード部の幅Ｗを としたものである。Means for Solving the Problems In order to achieve this object, the sealed battery of the present invention comprises:
An electrode body comprising a positive electrode plate, a cathode plate and a contact separator interposed between these electrode plates; a battery outer can housing the electrode body; and a sealing plate installed in a grooved portion of the outer can with an insulating packing. And a current collector for electrically connecting the electrode body and the sealing plate, wherein the current collector is cut and raised by cutting a part of the disk toward the center. Was
A lead portion to be welded to the sealing plate, and a current collecting portion welded to a protruding electrode plate edge provided on one end surface of the electrode body, and a lead portion extending from the center of the inner diameter of the grooved portion of the outer can. the distance l to the rising part of, with respect to the radius r 1 of the groove join the club inner diameter, And the width W of the lead portion in the current collector is It is what it was.
作用 この構成によって、リード部を集電体の中央部から立
ち上げることにより、封口板までの距離r2を短くし、か
つリード部の幅Ｗを広くすることで密閉型電池の内部抵
抗の低減及びリード部のねじれによる封口板溶接不良を
削減することができる。Act by this configuration, by raising the lead from the central portion of the current collector, by shortening the distance r 2 to the sealing plate, and reduction of the internal resistance of the sealed battery by increasing the width W of the lead portion In addition, welding failure of the sealing plate due to the twist of the lead portion can be reduced.
実施例 以下本発明の実施例について、図面を参照しながら説
明する。第１図は本発明において用いる集電体の一例を
示す図面であり、この集電体は集電部11とリード部12と
を備えている。第２図は、前記集電体を用いた密閉型電
池の縦断面図であり、電極体22は陽，陰極板とこれら極
板間に介挿されたセパレータとより構成されたもので、
電極体22の一端面に設けた上方へ突出する極板端縁に前
記集電体の集電部11が溶接される。この電極体22は、電
池外装缶23に収容され、外装缶23に溝入加工25がなさ
れ、集電体のリード部12が、封口板21の裏面に溶接さ
れ、絶縁パッキング24を介して封口板21を外装缶23で締
付けることにより閉塞される。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a drawing showing an example of a current collector used in the present invention. The current collector includes a current collector 11 and a lead 12. FIG. 2 is a longitudinal sectional view of a sealed battery using the current collector. The electrode body 22 is composed of a positive electrode, a negative electrode, and a separator interposed between these electrodes.
The current collector 11 of the current collector is welded to the edge of the electrode plate provided on one end surface of the electrode body 22 and protruding upward. The electrode body 22 is housed in a battery outer can 23, a groove 25 is formed in the outer can 23, and the lead 12 of the current collector is welded to the back surface of the sealing plate 21, and is sealed via an insulating packing 24. The plate 21 is closed by tightening it with an outer can 23.
第３図a,bは本発明の集電体の各寸法を示したもので
ある。ｌは、外装缶の溝入部25の内径の中心からリード
部12の立ち上がり部までの距離である。r1は外装缶23の
溝入部25の内径の半径、r2はリード部12の立ち上がり部
から先端までの距離であり、Ｗはリード部12の幅であ
る。これら集電体の各部の寸法関係を第４図に示した。FIGS. 3a and 3b show the dimensions of the current collector of the present invention. 1 is a distance from the center of the inner diameter of the grooved portion 25 of the outer can to the rising portion of the lead portion 12. r 1 is the radius of the inner diameter of the grooved portion 25 of the outer can 23, r 2 is the distance from the rising portion of the lead portion 12 to the tip, and W is the width of the lead portion 12. FIG. 4 shows the dimensional relationship of each part of the current collector.
以下にこの集電体をニッケルカドミウム蓄電池に適用
した例を説明する。An example in which this current collector is applied to a nickel cadmium storage battery will be described below.
公称容量1200mAhのSCサイズ （r1＝10mm）のニッケルカドミウム蓄電池に本発明の集
電体を適用して作製した。ここで使用した集電体の各部
の寸法および各集電体により作製された電池の内部抵
抗、12A放電時の放電電圧、溶接不良数を第１表に示し
た。内部抵抗は、電池作製後、1200mAで１時間30分充電
した後に測定した。その後、12Aで放電を行った。溶接
不良数は、各々10000個の電極体を溶接した際に発生し
た不良数を測定した。The current collector of the present invention was applied to a nickel-cadmium storage battery having a nominal capacity of 1200 mAh and an SC size (r 1 = 10 mm). Table 1 shows the dimensions of each part of the current collector used herein, the internal resistance, the discharge voltage at the time of 12 A discharge, and the number of defective weldings of the battery produced by each current collector. The internal resistance was measured after charging the battery at 1200 mA for 1 hour and 30 minutes after the battery was manufactured. Thereafter, discharge was performed at 12A. The number of defective weldings was determined by measuring the number of defectives generated when 10,000 electrode bodies were welded.
この結果、従来電池に対して、特性上優れる本発明の
電池は、ｌが よりも短い集電体をもつ電池であることがわかった。As a result, the battery of the present invention, which is superior in characteristics to the conventional battery, It was found that the battery had a shorter current collector.
また、リードの幅Ｗは、第３図における寸法関係か
ら、 とする。 The width W of the lead is determined from the dimensional relationship in FIG. And
のとき、つまり、第１表の本発明電池Ｆ（Ｗ＝19）のと
きは、内部抵抗は最小となるが、外装缶の溝入部に集電
体リード部が接触して短絡するという不具合が発生し
た。 In other words, when the battery F of the present invention in Table 1 (W = 19), the internal resistance is minimized, but the current collector lead contacts the grooved portion of the outer can and short-circuits. Occurred.
発明の効果 以上のように本発明は、密閉型電池の集電体における
外装缶の溝入部の内径の中心からリード部の立上がり部
までの距離ｌを、溝入部の内径の半径r1に対して、 ０≦ｌ＜r1/2 とし、また集電体のリード部の幅Ｗを、 とすることにより、リード部の立上がり部から封口板ま
での距離r2を短くし、かつリード部の幅Ｗを広くしたの
で電池内部抵抗の低減ならびにリード部のねじれによる
封口板溶接不良を減少させることができる。The present invention as described above the effect of the invention, the distance l from the center of the inner diameter of the groove join the club of the outer can to the rising portion of the lead portion of the current collector of the sealed battery, with respect to the radius r 1 of the inner diameter of the groove join the club Te, and 0 ≦ l <r 1/2 , also the width W of the lead portion of the current collector, By shortening the distance r 2 from the rising portion of the lead portion to the sealing plate, and increasing the width W of the lead portion, the internal resistance of the battery is reduced and the sealing plate welding failure due to the twisting of the lead portion is reduced. be able to.
第１図は本発明の実施例における集電体の斜視図、第２
図は第１図の集電体を用いた密閉型電池の縦断面図、第
３図a,bおよび第４図は集電体の各部の寸法関係を示し
た図、第５図は従来の集電体の斜視図である。 11……集電部、12……リード部、21……封口板、22……
電極体、23……外装缶、24……絶縁パッキング、25……
溝入部。FIG. 1 is a perspective view of a current collector according to an embodiment of the present invention, and FIG.
FIG. 3 is a longitudinal sectional view of a sealed battery using the current collector of FIG. 1, FIGS. 3a, 4b and 4 show the dimensional relationships of various parts of the current collector, and FIG. It is a perspective view of a current collector. 11 ... current collector, 12 ... lead, 21 ... sealing plate, 22 ...
Electrode body, 23 ... outer can, 24 ... insulating packing, 25 ...
Groove entry.
フロントページの続き (72)発明者 丸山 弘美 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭52−16640（ＪＰ，Ａ) 実開 昭57−17067（ＪＰ，Ｕ) 実開 昭55−40970（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 2/22 - 2/26Continuation of the front page (72) Inventor Hiromi Maruyama 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A 52-16640 (JP, A) , U) Actual opening 1980-40970 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H01M 2/22-2/26
Claims (1)
パレータとよりなる電極体と、該電極体を収容する電池
外装缶と、該外装缶の溝入部に絶縁パッキングを介して
設置される封口板と、前記電極体と封口板との間を電気
的に接続する集電体とを備えた電池であって、前記集電
体は、円板の一部を中央に向け切り込みを入れて切り起
こした、前記封口板に溶接されるリード部と、前記電極
体の一端面に設けた極板端縁に溶接される集電部とを有
し、前記外装缶の溝入部の内径の中心から前記リード部
の立ち上がり部までの距離ｌが、前記溝入部内径の半径
r1に対して、 であり、かつ前記集電体のリード部の幅Ｗは、 であることを特徴とする密閉型電池。1. An electrode assembly comprising a positive electrode plate, a cathode plate, and a separator interposed between these electrode plates, a battery outer can housing the electrode body, and an insulating packing in a groove of the outer can. A battery provided with a sealing plate to be installed, and a current collector for electrically connecting the electrode body and the sealing plate, wherein the current collector cuts a part of the disk toward the center. A lead portion welded to the sealing plate, and a current collecting portion welded to the edge of the electrode plate provided on one end surface of the electrode body, and a grooved portion of the outer can The distance l from the center of the inner diameter to the rising portion of the lead portion is the radius of the inner diameter of the grooved portion.
For r 1 , And the width W of the lead portion of the current collector is A sealed battery characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1203304A JP2765079B2 (en) | 1989-08-04 | 1989-08-04 | Sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1203304A JP2765079B2 (en) | 1989-08-04 | 1989-08-04 | Sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0367459A JPH0367459A (en) | 1991-03-22 |
| JP2765079B2 true JP2765079B2 (en) | 1998-06-11 |
Family
ID=16471818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1203304A Expired - Lifetime JP2765079B2 (en) | 1989-08-04 | 1989-08-04 | Sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2765079B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7138205B2 (en) * | 2001-10-02 | 2006-11-21 | Matsushita Electric Industrial Co., Ltd. | Battery with proportional collectors, straps, and plates |
| JP5441316B2 (en) | 2007-04-05 | 2014-03-12 | ローム株式会社 | Semiconductor light emitting device |
-
1989
- 1989-08-04 JP JP1203304A patent/JP2765079B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0367459A (en) | 1991-03-22 |
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