JPS60216446A - Flat enclosed type battery - Google Patents
Flat enclosed type batteryInfo
- Publication number
- JPS60216446A JPS60216446A JP7171784A JP7171784A JPS60216446A JP S60216446 A JPS60216446 A JP S60216446A JP 7171784 A JP7171784 A JP 7171784A JP 7171784 A JP7171784 A JP 7171784A JP S60216446 A JPS60216446 A JP S60216446A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- active material
- separator
- battery
- reinforcing ring
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/12—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with flat electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、非水雷vR液電池やアルカリ電池4I:ど
に多くみられる偏平型密閉式電池式電池に関し、特に、
その内部構造の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to non-torpedo vR liquid batteries and alkaline batteries 4I: flat sealed battery type batteries that are commonly found in
Regarding improvement of its internal structure.
ボタン型あるいはコイン型とよばれる偏平型密閉式電池
の従来の代表的な構造を第1図に示している。これは、
偏平な正極缶1内に正極活物質2・セパレータ3・負極
活物質4を積層した発電要素を収納し、かつ、正極缶1
の開口部内側に合成樹脂製の環状の封口ガスケット6を
介して皿状の0極端子板5を嵌合するとともに、正極缶
1の開目端縁を内側へカール成形することによって電池
内を密閉したものである。FIG. 1 shows a typical conventional structure of a flat sealed battery called a button type or coin type battery. this is,
A power generation element in which a positive electrode active material 2, a separator 3, and a negative electrode active material 4 are laminated is housed in a flat positive electrode can 1, and the positive electrode can 1
The inside of the battery is sealed by fitting the dish-shaped zero-electrode terminal plate 5 inside the opening of the battery via a synthetic resin annular sealing gasket 6, and by curling the open edge of the positive electrode can 1 inward. It is closed.
正極活物質2は予め円盤状に加圧成形されるが、ぞのと
き同時に、その周縁部に補強リング7が装着される。補
強リング7はステンレスなどからなり、断面L字状に形
成されていて、正極活物質2の周面から上面にかけてこ
れに密接している。この補強リング7は、正極缶1の開
口端縁を内側へ力ール成形して密閉する際に、その封口
力を補強リング7で均一に受けて、正極活物質2が封口
力によって崩れるのを防止するのを主目的に設けられた
ものである。また、セパレータ3番ま例えばボリプロピ
レンの不織布イjどから4fす、これに電解液が含浸さ
れている。The positive electrode active material 2 is press-molded in advance into a disk shape, and at the same time, a reinforcing ring 7 is attached to its peripheral edge. The reinforcing ring 7 is made of stainless steel or the like, has an L-shaped cross section, and is in close contact with the positive electrode active material 2 from its circumferential surface to its upper surface. This reinforcing ring 7 uniformly receives the sealing force when the opening edge of the positive electrode can 1 is molded inward and sealed, thereby preventing the positive electrode active material 2 from collapsing due to the sealing force. The main purpose was to prevent this. Separator number 3 is also impregnated with an electrolytic solution, for example, from polypropylene non-woven fabric 4f.
第1図に示すように、補強リング7を1゛1′つだ正極
活物質2の外径お」:びセパレータ3の外径は正極缶1
の内径にほぼ等しく、正極缶1内にはほとんど間隙なく
発電要素が充填されている。ぞのために、従来、次のよ
うな問題を生じていた。As shown in FIG.
The inside diameter of the positive electrode can 1 is approximately equal to the inner diameter of the positive electrode can 1, and the power generation elements are filled in the positive electrode can 1 with almost no gaps. Conventionally, this has caused the following problems.
上述のように正極缶1のカール成形で電池を密閉する工
程において、電池内部にはと7uど空間的余裕がないの
で、電池内は全体的に強< JT−縮される。そのとき
1?パレータ3も圧縮される。特に、補強リング7の」
二面部ど14 Elガスケツ1へ6の底面部の間に挟ま
れた【?パレータ30周辺部分が強く圧縮される。リ−
るどレバレータ3に含浸されている電解液が絞り出され
、揚台にJ:つてはJ’=I nガスケツ1へ6の外周
と正極缶1の間を通って外部へ漏れだすことがあつlJ
l、このJ、うに従来【よ、電池の密閉工程で電解液が
漏出リ−るという不良が2・〜・3%程度と化較的多く
発生していた。As described above, in the step of sealing the battery by curling the positive electrode can 1, there is not enough space inside the battery, so the inside of the battery is compressed as a whole. 1 then? Parator 3 is also compressed. Especially the reinforcement ring 7.
Two-sided part 14 El gasket 1 to 6 sandwiched between the bottom part [? The area around the palator 30 is strongly compressed. Lee
The electrolyte impregnated in the lever lever 3 may be squeezed out and leak to the outside through the space between the outer periphery of the gasket 1 and the positive electrode can 1. lJ
In the past, defects such as electrolyte leakage during the battery sealing process occurred relatively frequently, at about 2-3%.
この発明は前述した従来の問題点に鑑みなされたもので
あり、その目的は、簡単な改良手段で、電池の密閉工程
にお【プる電解液の漏出を確実に防1にできるj;うに
した偏平型密閉式電池を提供することにある。This invention was made in view of the above-mentioned conventional problems, and its purpose is to reliably prevent leakage of electrolyte during the battery sealing process by a simple improvement means. The object of the present invention is to provide a flat sealed battery.
上記の目的を達成するために、この発明は、上述しlこ
基本構造の偏平型密閉式電池において、補強リングの上
面部にその内周側部分の高さを外周側部分より一段低く
した窪み部を形成するとともに、I=パレータの外径を
上記窪み部の外径より若干小さくし、廿パレータの周縁
を上記窪み部上に配置したことを特徴どする。In order to achieve the above object, the present invention provides a flat sealed battery having the basic structure described above, in which a recess is provided on the upper surface of the reinforcing ring, the inner circumferential side of which is one step lower in height than the outer circumferential side. The outer diameter of the pallet is slightly smaller than the outer diameter of the recess, and the peripheral edge of the pallet is disposed on the recess.
以下、この発明の実施例を図面に1;↓づいて詳細にム
;2明覆る。Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
この発明の偏平型密閉式電池の一実施例としてのボタン
型非水電解液電池の構造を第2図に示し−(いる。これ
の基本構造は従来と同じで、偏平な正極缶1内に正極活
物質2・セパレータ3・負極活物質4を積層した発電要
素を収納し、かつ、正極缶1の開口部内側に封口ガスケ
ツ1−〇を介して負極端子板5を嵌合するとともに、正
極缶10聞−3−
口端縁を内側へカール成形づることにJ: =>て電池
内を密閉したしのCある。また、負極活物質4としては
リチウム雪の軽金属が使用され(いる。セパレータ3は
ボリプ11ピレンの不織布からシ【す、これに非水霜解
液が含浸されている。正極活物質2は二酸化マンガン等
を主体とする合剤を予め円盤状に加圧成形し7.ニーb
ので、その加圧成形11.1に、本発明の要部の一つで
ある補強リング7が周縁部に装着されている。The structure of a button-type non-aqueous electrolyte battery as an embodiment of the flat sealed battery of the present invention is shown in FIG. A power generation element in which a positive electrode active material 2, a separator 3, and a negative electrode active material 4 are laminated is housed, and a negative electrode terminal plate 5 is fitted inside the opening of the positive electrode can 1 via a sealing gasket 1-0, and the positive electrode The inside of the battery is sealed by curling the mouth edge inward.Furthermore, as the negative electrode active material 4, a light metal such as lithium snow is used. The separator 3 is made of a non-woven fabric of Volip 11 pyrene, which is impregnated with a non-aqueous frosting solution.The positive electrode active material 2 is made of a mixture mainly composed of manganese dioxide, etc., which is pressure-molded into a disc shape in advance. .knee b
Therefore, a reinforcing ring 7, which is one of the essential parts of the present invention, is attached to the peripheral edge of the press-formed material 11.1.
第3図は第2図における補強リング70萌細を示してい
る。この補強リング7はステンレス等からなり、正極活
物質2の周面および上面に密接Jる周面部71および上
面部72を右し、断面はぼL字型に形成されている。た
だし上面部72は平坦ではない。補強リング7の、に面
部72には、その内周側部分の高さを外周側部分にり一
段低くした窪み部73を形成している。この窪み部73
の段差は、圧縮した状態のセパレータ3の厚みとほぼ等
しい。FIG. 3 shows the elongation of the reinforcing ring 70 in FIG. 2. The reinforcing ring 7 is made of stainless steel or the like, and has a circumferential surface portion 71 and a top surface portion 72 that closely contact the circumferential surface and the top surface of the positive electrode active material 2, and has an L-shaped cross section. However, the upper surface portion 72 is not flat. A recessed portion 73 is formed in the face portion 72 of the reinforcing ring 7, with the height of the inner peripheral portion being lower than that of the outer peripheral portion. This depression 73
The step difference is approximately equal to the thickness of the separator 3 in a compressed state.
第2図に示づように、補強リング7を伴って加−4−
圧成形された正極活物質2の上面は、−上記窪み部 7
3の上面ど面一になっている。また、補強リング7を伴
う正極活物質2の外径は正極缶1の内径とほぼ等しく、
正極缶内にほぼ間隙なく装填されている。As shown in FIG. 2, the upper surface of the positive electrode active material 2, which has been pressure-formed together with the reinforcing ring 7, has the above-mentioned depression 7.
The top surface of 3 is flush. Further, the outer diameter of the positive electrode active material 2 with the reinforcing ring 7 is approximately equal to the inner diameter of the positive electrode can 1;
It is loaded into the positive electrode can with almost no gaps.
またこの発明の電池では、セパレータ3の外径は正極缶
1の内径より相当小ざい。詳述すると、セパレータ3の
外径は、第3図に示す補強リング7の窪み部73の内径
すより大ぎく、窪み部73の外径a 、lり若干小さく
なっている。そして第2図に示すように、セパレータ3
は正極活物質2の上面に重ねられ、その周縁部分が補強
リング7の窪み部73上に配置され、窪み部73の段差
部分より内側に収まっている。Further, in the battery of the present invention, the outer diameter of the separator 3 is considerably smaller than the inner diameter of the positive electrode can 1. Specifically, the outer diameter of the separator 3 is larger than the inner diameter of the recess 73 of the reinforcing ring 7 shown in FIG. 3, but slightly smaller than the outer diameter a of the recess 73. Then, as shown in Fig. 2, the separator 3
is superimposed on the upper surface of the positive electrode active material 2, and its peripheral portion is placed on the recessed portion 73 of the reinforcing ring 7, and is housed inside the stepped portion of the recessed portion 73.
以上の構成において、電池の密閉後の状態では、セパレ
ータ3の−に面は補強リング7の上面部72の上面とほ
ぼ面一になっている。特にここで注目すべきことは、セ
パレータ3の周縁が窪み部73に収まり、正極缶1の内
面近くまで達していないことと、正極缶1の内面近くで
は補強リング7の上面部72と封[1ガスケツト6の底
面が0“I接接し、この間にセパレータ30周縁部が挟
まれではいないことである。In the above configuration, when the battery is sealed, the - side of the separator 3 is substantially flush with the upper surface of the upper surface portion 72 of the reinforcing ring 7. Particularly noteworthy here is that the peripheral edge of the separator 3 fits into the recess 73 and does not reach close to the inner surface of the positive electrode can 1, and that near the inner surface of the positive electrode can 1, the upper surface 72 of the reinforcing ring 7 and the sealing 1. The bottom surfaces of the gaskets 6 are in 0"I contact, and the peripheral edge of the separator 30 is not sandwiched between them.
そのために、iT」41tri 1の聞[−I端縁をカ
ール成形する電池の密閉工程にJ3いて、レバレータ3
が圧縮されてそれに含浸されている電解液lメ絞り出さ
れても、補強リング7の上面部72とJ・ローIガスケ
ット6の底面部との密接部分が障害と<1って、絞り出
された電解液t、t if−極用1の内面にまC伝わら
ない。したがつζ、I]極ζ1,1どI:!I [11
ガス9ツ1−6の間を通って電解液が漏れ出るといった
不良はほとんど発生しなくイTる。For this purpose, J3 was involved in the battery sealing process of curling the edges of iT'41tri 1, and lever 3
Even if the electrolytic solution impregnated in it is compressed and squeezed out, the close contact between the top surface 72 of the reinforcing ring 7 and the bottom surface of the J.Roe I gasket 6 is an obstacle and prevents the squeezing out. Electrolyte solution t, t if C is not transmitted to the inner surface of electrode 1. However, ζ, I] pole ζ1, 1 and I:! I [11
Failures such as leakage of the electrolyte through the gap between the gas holes 1-6 rarely occur.
第4図は補強リング7の他の構成例を示している。この
例では、補強リング7の上面部72の厚みを薄くするこ
とで、−に述の窪み部73を形成している。この例でも
上記と同様な作用効果が19られるのは勿論である、。FIG. 4 shows another example of the structure of the reinforcing ring 7. In this example, by reducing the thickness of the upper surface portion 72 of the reinforcing ring 7, the recessed portion 73 described in - is formed. Of course, this example also provides the same effects as described above.
以上詳細に説明したように、この発明に係る偏平型密閉
式電池によれば、電池の密閉工程で電解液が外部に漏れ
出J“という不良をはとlυどなくJことができ、製品
の歩留りが向上する。As explained in detail above, according to the flat sealed battery according to the present invention, defects such as leakage of electrolyte to the outside during the battery sealing process can be completely avoided, and the product can be improved. Yield is improved.
第1図は従来の偏平型密閉式電池の断面図、第2図はこ
の発明の一実施例による偏平型密閉式電池の断面図、第
3図は第2図の電池における補強リングの部分詳細図、
第4図はこの発明の他の実施例を示す補強リングの部分
詳細図である。
1・・・正極缶1 2・・・正極活物質23・・・[パ
レータ3 4・・・負極活物質45・・・負極端子板5
6・・・封口ガスケット7・・・補強リング 71・
・・周囲面部72・・・上面部 73・・・窪み部
特許出願人 富士電気化学株式会社
代理人 弁理士 −色 健 輔Fig. 1 is a sectional view of a conventional flat sealed battery, Fig. 2 is a sectional view of a flat sealed battery according to an embodiment of the present invention, and Fig. 3 is a partial detail of the reinforcing ring in the battery of Fig. 2. figure,
FIG. 4 is a partially detailed view of a reinforcing ring showing another embodiment of the invention. 1... Positive electrode can 1 2... Positive electrode active material 23... [Parator 3 4... Negative electrode active material 45... Negative electrode terminal plate 5
6... Sealing gasket 7... Reinforcement ring 71.
...Surrounding surface portion 72...Top surface portion 73...Concave portion Patent applicant Fuji Electrochemical Co., Ltd. Agent Patent attorney - Kensuke Iro
Claims (1)
れた正極活物質を偏平な正極缶内に収納するとともに、
その」−にヒバ1ノータお、J、びイ1極桔物質を積層
し、かつ、上記正極缶の聞[1部内側に1・10ガスケ
ツ1〜を介して負極喘了椴を1べ含りるどどもに、上記
正極缶の開口端縁を内側へカール成形して電池内を密閉
してなる偏平型密閉式電池において、上記補強リングの
L内部にその内周側部分の高さを外周側部分より−・用
紙(1,/: )’1’み部を形成するとともに、−に
記しバレータの外径を上記住み部の外径より若干小さく
し、上記セパレータの周縁を上記住み部上に配量したこ
とを特徴とJる偏平型密閉式電池。(1) A reinforcing ring is attached to the periphery (the disk-shaped positive electrode active material is housed in a flat positive electrode can, and
Layer 1 electrode material on top of the above-mentioned positive electrode can, and include 1 negative electrode gasket inside the positive electrode can through a 1.10 gasket 1~. In a flat sealed battery in which the opening edge of the positive electrode can is curled inward to seal the inside of the battery, the height of the inner peripheral portion is set inside the L of the reinforcing ring. From the outer periphery side - form a paper (1, /: ) '1' recessed part, and make the outer diameter of the valet slightly smaller than the outer diameter of the above-mentioned living part, and make the outer diameter of the valet slightly smaller than the outer diameter of the above-mentioned living part, and the periphery of the separator is formed into the above-mentioned living part. A flat sealed battery that is characterized by its metering on the top.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7171784A JPS60216446A (en) | 1984-04-12 | 1984-04-12 | Flat enclosed type battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7171784A JPS60216446A (en) | 1984-04-12 | 1984-04-12 | Flat enclosed type battery |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60216446A true JPS60216446A (en) | 1985-10-29 |
JPH0474828B2 JPH0474828B2 (en) | 1992-11-27 |
Family
ID=13468553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7171784A Granted JPS60216446A (en) | 1984-04-12 | 1984-04-12 | Flat enclosed type battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60216446A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5493685A (en) * | 1990-02-23 | 1996-02-20 | Kabushiki Kaisha Toshiba | Display control apparatus capable of changing luminance depending on conditions of power supply circuit |
-
1984
- 1984-04-12 JP JP7171784A patent/JPS60216446A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5493685A (en) * | 1990-02-23 | 1996-02-20 | Kabushiki Kaisha Toshiba | Display control apparatus capable of changing luminance depending on conditions of power supply circuit |
Also Published As
Publication number | Publication date |
---|---|
JPH0474828B2 (en) | 1992-11-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |