JP3165189B2 - Organic electrolyte battery - Google Patents
Organic electrolyte batteryInfo
- Publication number
- JP3165189B2 JP3165189B2 JP24853891A JP24853891A JP3165189B2 JP 3165189 B2 JP3165189 B2 JP 3165189B2 JP 24853891 A JP24853891 A JP 24853891A JP 24853891 A JP24853891 A JP 24853891A JP 3165189 B2 JP3165189 B2 JP 3165189B2
- Authority
- JP
- Japan
- Prior art keywords
- sealing plate
- battery
- organic electrolyte
- electrolyte battery
- thickness
- 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 - Fee Related
Links
Classifications
-
- Y02E60/12—
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Primary Cells (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はリチウムを負極とし、電
解液に有機溶媒を用いた有機電解液電池の放電電気容量
と耐漏液性の改良に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in discharge capacity and leakage resistance of an organic electrolyte battery using lithium as a negative electrode and an organic solvent as an electrolyte.
【０００２】[0002]
【従来の技術】従来の有機電解液電池の封口板は、材質
としてステンレススチールをニッケルメッキして用いら
れてきた。また、電池の内容積を大きくするため、電池
ケースと封口板の板厚を薄くしたり、中央平坦部と傾斜
部とを接続する曲部の内面半径Ｒ′を、小さくしてき
た。図２に示すように、Ｒ′＝０．１５ｍｍとＲ＝０．
５ｍｍでは、Ｒ′の方が電池内容積が大きくなってい
る。このため従来の封口板の曲部の内面半径Ｒ′は０．
１５ｍｍとして、その分電解液を封入していた。2. Description of the Related Art A conventional sealing plate of an organic electrolyte battery has been used by nickel-plating stainless steel as a material. Further, in order to increase the internal volume of the battery, the thickness of the battery case and the sealing plate has been reduced, and the inner surface radius R 'of the curved portion connecting the central flat portion and the inclined portion has been reduced. As shown in FIG. 2, R '= 0.15 mm and R = 0.
At 5 mm, R 'has a larger battery internal volume. For this reason, the radius R 'of the inner surface of the curved portion of the conventional sealing plate is set to 0.
It was 15 mm, and the electrolytic solution was sealed accordingly.
【０００３】[0003]
【発明が解決しようとする課題】しかし、近年電池の高
さ、外径が同一であっても、より放電高容量化が試みら
れてきた。このため電池ケース、封口板の板厚も徐々に
薄くなってきた。封口板のステンレススチール材の板厚
が０．２５ｍｍを越えていた時には、封口板の曲部の内
面半径Ｒ′が０．１５ｍｍ程度でも封口性に問題はなか
った。しかし板厚が０．２５ｍｍ以下になると、曲部の
内面半径Ｒ′を０．１５ｍｍで加工した封口板を用いて
電池を組立てると、板厚が薄くなった分だけ内容積は増
加するが、かしめ時にガスケットにより内方へ押された
断面Ｕ字状の周縁部が変形してしまい、曲部もより曲げ
られ、ガスケットの圧縮力が減少し、漏液が発生し易く
なる欠点が発生した。However, in recent years, attempts have been made to increase the discharge capacity even when the batteries have the same height and outer diameter. For this reason, the thicknesses of the battery case and the sealing plate have been gradually reduced. When the thickness of the stainless steel material of the sealing plate exceeded 0.25 mm, there was no problem in the sealing property even if the inner surface radius R 'of the curved portion of the sealing plate was about 0.15 mm. However, when the plate thickness becomes 0.25 mm or less, when the battery is assembled using a sealing plate processed with the inner surface radius R 'of the curved portion at 0.15 mm, the internal volume increases by an amount corresponding to the reduction in the plate thickness, At the time of caulking, the periphery of the U-shaped cross section pushed inward by the gasket was deformed, the curved portion was also bent, the compressive force of the gasket was reduced, and a problem that liquid leakage easily occurred occurred.
【０００４】本発明はこのような課題を解決するために
なされたもので、電池の封口板の板厚を薄くしても、曲
部の内面半径を０．５ｍｍ以上とすることで、高容量で
優れた耐漏液性を有する有機電解液電池を得ようとする
ものである。The present invention has been made to solve such a problem, and even if the thickness of the sealing plate of the battery is reduced, the inner radius of the curved portion is set to 0.5 mm or more to achieve high capacity. It is intended to obtain an organic electrolyte battery having excellent leakage resistance.
【０００５】[0005]
【課題を解決するための手段】本発明は、断面Ｕ字状の
周縁部と、中央平坦部と、該周辺部と中央平坦部との間
の傾斜部とを有するステンレススチール材からなる封口
板と、電池ケースとを、ガスケットを介して電池ケース
開口部を内方へかしめることにより封口してなる有機電
解液電池において、上記封口板の平坦部と傾斜部とを接
続する曲部が、内面半径０．５ｍｍ以上の曲線からな
り、かつ封口板の板厚が０．２５ｍｍ未満であることを
特徴とする。SUMMARY OF THE INVENTION The present invention is directed to a sealing plate made of stainless steel having a peripheral portion having a U-shaped cross section, a central flat portion, and an inclined portion between the peripheral portion and the central flat portion. And the battery case, in an organic electrolyte battery sealed by caulking the battery case opening inward via a gasket, a curved portion connecting the flat portion and the inclined portion of the sealing plate, From the curve with inner surface radius 0.5mm or more
And the plate thickness of the sealing plate is less than 0.25 mm .
【０００６】[0006]
【作用】本発明は曲部の内面半径Ｒを０．５ｍｍ以上と
しているので、板厚が０．２５ｍｍ未満の封口板であっ
ても、電池ケースの開口部を内方へ折曲して封口する時
に、曲部の内面半径が大きいことによって曲部が折れ曲
がることがない。そのため、強度が抜けず、ガスケット
を介して封口圧力を十分に支えることができ、封口板と
ガスケットとの間を強く密封することができる。これに
よって耐漏液性の優れた有機電解液電池を得ることがで
きる。According to the present invention, since the inner radius R of the curved portion is 0.5 mm or more, even if the sealing plate has a thickness of less than 0.25 mm, the opening of the battery case is bent inward to seal the battery. In this case, the curved portion does not bend due to the large inner radius of the curved portion. Therefore, the strength is not lost, the sealing pressure can be sufficiently supported via the gasket, and the gap between the sealing plate and the gasket can be strongly sealed. As a result, an organic electrolyte battery having excellent leakage resistance can be obtained.
【０００７】[0007]
【実施例】以下、図面により実施例の有機電解液電池を
説明する。図１は本発明の実施例電池の断面図である。
１は板厚０．２ｍｍのステンレススチール製の封口板、
２はステンレススチール製の電池ケース、３はポリプロ
ピレンからなるガスケット、４は二酸化マンガンと導電
材と結着剤からなる正極合剤、５は負極活物質であるリ
ウチム、６はポリプロピレン製の不織布からなるセパレ
ーターで、電解液は、プロピレンカーボネートと１，２
ジメトキシエタンとの等容積混合溶媒に、過塩素酸リチ
ウムを溶解させ、セパレーターに含浸させて電池内に封
入している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an organic electrolyte battery according to an embodiment will be described with reference to the drawings. FIG. 1 is a sectional view of a battery according to an embodiment of the present invention.
1 is a 0.2 mm thick stainless steel sealing plate,
2 is a battery case made of stainless steel, 3 is a gasket made of polypropylene, 4 is a positive electrode mixture made of manganese dioxide, a conductive material and a binder, 5 is a lithium active material that is a negative electrode active material, and 6 is a nonwoven fabric made of polypropylene. In the separator, the electrolyte is propylene carbonate and 1,2
Lithium perchlorate is dissolved in an equal volume mixed solvent with dimethoxyethane, impregnated in a separator, and sealed in a battery.
【０００８】次に、板厚０．２ｍｍのステンレスチール
製の封口板１の曲部の内面半径を、０．２ｍｍ、０．３
ｍｍ、０．４ｍｍ、０．５ｍｍ、０．６ｍｍとした以外
実施例と同じ電池Ａ，Ｂ，Ｃ，Ｄ，Ｅを各５０個組立
て、耐漏液試験を行なった。これらの電池Ａ，Ｂ，Ｃ，
Ｄ，Ｅ各５０個を、温度６０℃に１時間、−１０℃まで
の降温に１時間、−１０℃に１時間、６０℃までの昇温
に１時間とした温度サイクルを行ない、サイクル中の漏
液電池個数を表１にまとめた。Next, the inner surface radius of the curved portion of the sealing plate 1 made of stainless steel having a thickness of 0.2 mm is set to 0.2 mm, 0.3 mm.
The same 50 batteries A, B, C, D, and E as in the example except that the thicknesses were set to mm, 0.4 mm, 0.5 mm, and 0.6 mm were assembled and subjected to a liquid leakage test. These batteries A, B, C,
A temperature cycle was performed with 50 pieces each of D and E at a temperature of 60 ° C. for 1 hour, a temperature decrease to −10 ° C. for 1 hour, a temperature of −10 ° C. for 1 hour, and a temperature increase to 60 ° C. for 1 hour. Table 1 summarizes the number of leaked batteries.
【０００９】[0009]
【表１】 [Table 1]
【００１０】表１より、封口板の中央平坦部と傾斜部と
を接続する曲部の内面半径Ｒが、０．５ｍｍ以上の封口
板を用いた本発明の有機電解液電池Ｄ，Ｅは、耐漏液性
が優れていることがわかる。From Table 1, it can be seen that the organic electrolyte batteries D and E of the present invention using a sealing plate having an inner surface radius R of 0.5 mm or more in a curved portion connecting the central flat portion and the inclined portion of the sealing plate are as follows. It can be seen that the liquid leakage resistance is excellent.
【００１１】[0011]
【発明の効果】以上のように本発明によれば、有機電解
液電池において、封口板の曲部の内面半径を０．５ｍｍ
以上としたことにより機械的な強度を得ることができる
ので、かしめにより電池を密封する時に、変形が起こら
ず密封性を高めることができる。したがって、封口板や
電池ケースの板厚を薄くして電池容量の増加を図って
も、耐漏液特性が低下せず、放電容量と耐漏液性の優れ
た電池を得ることができる。As described above, according to the present invention, the organic electrolysis
In the liquid battery, the inner radius of the curved portion of the sealing plate is 0.5 mm.
Can Rukoto give mechanical strength by which the above
When the battery is sealed by caulking , deformation may occur.
The sealing performance can be improved. Therefore, sealing plates and
Reduce the thickness of the battery case to increase battery capacity
Also, the leakage resistance does not decrease, and the discharge capacity and leakage resistance are excellent.
It is possible to obtain a battery.
【図１】本発明のボタン型有機電解液電池の実施例の断
面図である。FIG. 1 is a sectional view of an embodiment of a button-type organic electrolyte battery according to the present invention.
【図２】本発明の封口板の要部拡大断面図である。FIG. 2 is an enlarged sectional view of a main part of the sealing plate of the present invention.
【符号の説明】 １ 封口板 ２ 電池容器 ３ ガスケット ７ 平坦部 ８ 傾斜部 ９ 曲部 Ｒ 内面半径[Description of Signs] 1 sealing plate 2 battery container 3 gasket 7 flat portion 8 inclined portion 9 curved portion R inner radius
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭55−9362（ＪＰ，Ａ) 特表 昭62−502181（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 2/02 - 2/08 B21D 51/26 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-9362 (JP, A) JP-T-62-502181 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 2/02-2/08 B21D 51/26
Claims (1)
該周辺部と中央平坦部との間の傾斜部とを有するステン
レススチール材からなる封口板と、電池ケースとを、ガ
スケットを介して電池ケース開口部を内方へかしめるこ
とにより封口してなる有機電解液電池において、上記封
口板の平坦部と傾斜部とを接続する曲部が、内面半径
０．５ｍｍ以上の曲線からなり、かつ封口板の板厚が
０．２５ｍｍ未満であることを特徴とする有機電解液電
池。1. A peripheral portion having a U-shaped cross section, a flat central portion,
A stainless steel having an inclined portion between the peripheral portion and the central flat portion.
A sealing plate made of a less steel material and a battery case, in an organic electrolyte battery sealed by caulking an opening of the battery case inward via a gasket, the flat portion and the inclined portion of the sealing plate. curved portions connecting the can, Ri Do from the above curve inner surface radius 0.5 mm, and the thickness of the sealing plate
An organic electrolyte battery having a thickness of less than 0.25 mm .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24853891A JP3165189B2 (en) | 1991-06-25 | 1991-06-25 | Organic electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24853891A JP3165189B2 (en) | 1991-06-25 | 1991-06-25 | Organic electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH053026A JPH053026A (en) | 1993-01-08 |
| JP3165189B2 true JP3165189B2 (en) | 2001-05-14 |
Family
ID=17179675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24853891A Expired - Fee Related JP3165189B2 (en) | 1991-06-25 | 1991-06-25 | Organic electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3165189B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102426533B1 (en) * | 2020-09-18 | 2022-07-29 | 주식회사 남영글로벌 | Apparatus for manufacturing disposable mask |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5152886B2 (en) * | 2006-02-01 | 2013-02-27 | 日立マクセルエナジー株式会社 | Coin battery |
| JP6066064B2 (en) * | 2013-02-18 | 2017-01-25 | セイコーインスツル株式会社 | Electrochemical cell and method for producing electrochemical cell |
-
1991
- 1991-06-25 JP JP24853891A patent/JP3165189B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102426533B1 (en) * | 2020-09-18 | 2022-07-29 | 주식회사 남영글로벌 | Apparatus for manufacturing disposable mask |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH053026A (en) | 1993-01-08 |
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