JPS61232561A - Button type alkaline battery - Google Patents
Button type alkaline batteryInfo
- Publication number
- JPS61232561A JPS61232561A JP7297185A JP7297185A JPS61232561A JP S61232561 A JPS61232561 A JP S61232561A JP 7297185 A JP7297185 A JP 7297185A JP 7297185 A JP7297185 A JP 7297185A JP S61232561 A JPS61232561 A JP S61232561A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- positive
- separator
- supporting ring
- pressed
- 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
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】
産業上の利用分野
本発明は、アルカリ電解液を用いるボタン形電池の改良
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improvements in button batteries using alkaline electrolytes.
従来の技術
ボタン形アルカリ電池の一般的構成を酸化銀電池につい
て第2図により説明する。The general structure of a conventional button-type alkaline battery will be explained with reference to FIG. 2 for a silver oxide battery.
図中1は酸化銀粉末と、電導性付与剤としてリン状黒鉛
さらに成型性を高めるため二酸化マンガンを混合した正
極合剤であり、鉄にニッケルメッキをした正極ケース2
内に充填成型されている。1 in the figure is a positive electrode mixture made of silver oxide powder, phosphorous graphite as a conductivity imparting agent, and manganese dioxide to improve moldability. Positive electrode case 2 is made of iron plated with nickel.
It is filled and molded inside.
3は鉄にニッケルメッキしたものか、あるいは鉄合金よ
りなる正極台座、4はポリエチレン等よりなる微孔性フ
ィルムとセロハンからなるセパレータ層とナイロン不織
布等によりなる含液層、6は負極で、氷化亜鉛粉末とカ
ルボキシメチルセルローズ等の造粘剤及びアルカリ電解
液とから構成されている。6はナイロンよりなるガスケ
ット、7は負極封目板である。上記構成を有する酸化銀
電池において、3で示す正極台座は電池の封口カシメ時
に、正極部へ加わる圧力を均一に受は止め、正極部の崩
壊を防ぐとともに、セパレータ層4が直接酸化力の強い
正極合剤1に押し当てられて劣化すること、ならびに内
部短絡を防ぐ等の重要な働きがある。3 is a positive electrode pedestal made of nickel-plated iron or iron alloy; 4 is a microporous film made of polyethylene, etc., a separator layer made of cellophane, and a liquid-containing layer made of nylon nonwoven fabric, etc.; 6 is a negative electrode; It is composed of zinc chloride powder, a thickening agent such as carboxymethyl cellulose, and an alkaline electrolyte. 6 is a gasket made of nylon, and 7 is a negative electrode sealing plate. In the silver oxide battery having the above configuration, the positive electrode pedestal indicated by 3 uniformly receives the pressure applied to the positive electrode part when the battery is sealed and caulked, thereby preventing the positive electrode part from collapsing. It has important functions such as preventing deterioration when pressed against the positive electrode mixture 1 and preventing internal short circuits.
しかしながら、従来より使用されている正極台座3は第
3図に示す通り、その中央打抜部が正極から負極方向に
向けて打抜かれ、その口縁であるa部にバリが出たり、
バIJ−1でに至らなくても非常に鋭利な刃物状となっ
ている。However, as shown in FIG. 3, in the conventionally used positive electrode pedestal 3, the center punched part is punched from the positive electrode toward the negative electrode, and burrs appear on part a, which is the edge of the opening.
Even if it does not reach IJ-1, it has a very sharp blade shape.
発明が解決しようとする問題点
しかしこの台座口縁のa部が電池構成後、第2図中4の
セパレータ層に当接し、セパレータを損傷させて電池の
保存性能を低下させる原因となっていた。Problems to be Solved by the Invention However, after the battery is assembled, part a of the edge of the pedestal comes into contact with the separator layer 4 in Figure 2, damaging the separator and causing a decrease in the storage performance of the battery. .
従って過去にも、このような現象を解決するために、正
極台座の中央打抜部を負極から正極方向に向けて打ち抜
き、バリをセパレータ側に突出させずに正極側に突出さ
せる方法や、中央打抜部が正極から負極方向に向けて打
ち抜かれ、さらにこの打抜きにより生じたバリあるいは
鋭利な断面部を押圧することにより、丸みのある状態と
した正極台座を使用したシしていた。Therefore, in the past, in order to solve this phenomenon, methods were proposed in which the central punched part of the positive electrode pedestal was punched out from the negative electrode toward the positive electrode, so that the burrs did not protrude toward the separator side, but toward the positive electrode side, and A positive electrode pedestal was used in which a punched portion was punched from the positive electrode toward the negative electrode, and the burrs or sharp cross-sections generated by the punching were pressed to give a rounded shape.
しかしこれらの方法においては、正極ケース2に正極合
剤1と正極台座3とを固定圧着する工程で、正極側に出
たバリにより正極部が割れて正極部を正常な状態で構成
することがむつかしかった。However, in these methods, during the process of fixing and crimping the positive electrode mixture 1 and the positive electrode pedestal 3 to the positive electrode case 2, the positive electrode part may crack due to burrs appearing on the positive electrode side, and the positive electrode part may not be configured in a normal state. It was difficult.
又正極台座3の厚みが薄く、寸法的に小型になるに従っ
て打抜きにより生じたバリあるいは、鋭利な断面部を均
一に押圧することが困難となり、実用に適さなかった。Furthermore, as the positive electrode pedestal 3 becomes thinner and smaller in size, it becomes difficult to uniformly press burrs or sharp cross-sections caused by punching, making it unsuitable for practical use.
本発明は以上のような問題点を解消するものであり、正
極台座のバリによるセパレータの損傷をなくし、安定し
た正極部を供給することを目的としたものである。The present invention solves the above-mentioned problems, and aims to eliminate damage to the separator due to burrs on the positive electrode pedestal and provide a stable positive electrode section.
問題点を解決するだめの手段
本発明は正極ケースに正極合剤と正極台座とを固定圧着
し、正極台座の水平面中央打抜部に正極から負極方向に
向けて発生したバリ、あるいは鋭利な断面先端部を環状
溝部のある状態に固定圧着したことである。Means to Solve the Problems The present invention fixes and presses the positive electrode mixture and the positive electrode pedestal to the positive electrode case, and eliminates burrs or sharp cross-sections generated from the positive electrode toward the negative electrode in the horizontal central punched part of the positive electrode pedestal. The tip is fixed and crimped to the annular groove.
作 用
このようにバリあるいは断面先端部を環状溝部状に固定
圧着とすれば、正極合剤を破損することなく、正極の成
型性に優れ、さらに正極台座の中央打抜部とセパレータ
層との直接の当接も防いでセパレータの損傷も防止でき
、保存信頼性に優れたボタン形電池を提供できる。Function If the burr or cross-sectional tip is fixed and crimped in the shape of an annular groove in this way, the positive electrode mixture will not be damaged, the positive electrode will have excellent moldability, and the connection between the central punched part of the positive electrode pedestal and the separator layer will be excellent. It is possible to prevent damage to the separator by preventing direct contact, and to provide a button-shaped battery with excellent storage reliability.
実施例 以下、本発明を実施例で詳述する。Example Hereinafter, the present invention will be explained in detail with reference to Examples.
第1図は本発明の実施例であり正極台座のバリあるいは
断面先端部を環状溝部状に固定圧着した状態を示すもの
である。これを説明するとその口縁a部と正極合剤1と
の接点部が負極方向から正極部方向に、環状溝部状に押
圧され、断面先端部に生じていたバリや鋭利な刃状端部
がセパレータに当接するのを防いでいる。又圧着と同時
に環状溝部状に加圧するため、正極の成型性にも優れる
。FIG. 1 shows an embodiment of the present invention, in which the burr or cross-sectional tip of the positive electrode pedestal is fixed and crimped into an annular groove shape. To explain this, the contact point between the mouth edge a and the positive electrode mixture 1 is pressed from the negative electrode direction toward the positive electrode part in an annular groove shape, and the burrs and sharp blade-like ends that have occurred at the tip of the cross section are removed. This prevents it from coming into contact with the separator. In addition, since pressure is applied to the annular groove at the same time as crimping, the moldability of the positive electrode is also excellent.
以上のような形状を有する正極部をボタン形アルカリ電
池、例えば第2図に示す酸化銀電池に使用すると、セパ
レータに当接する部分の正極台座の中央打抜部が環状溝
部状になっているために、セパレータ層に損傷を与える
恐れが全たくなく、優れた保存信頼性の電池を得ること
が出来る。When a positive electrode part having the above shape is used in a button-type alkaline battery, for example, a silver oxide battery shown in Fig. 2, the central punched part of the positive electrode pedestal in the part that contacts the separator is shaped like an annular groove. Furthermore, there is no risk of damaging the separator layer, and a battery with excellent storage reliability can be obtained.
本発明の正極部を用いて酸化銀電池5kt44を作成し
、これと第2図で示した同形の従来品とのなお*1の形
状の大きさは環状溝部状に固定圧着後測定したものであ
る。また*2の保存容量残存率(放電個数はそれぞれ1
0個)は、放電抵抗15にΩ、終止電圧1.4vまでの
放電時間について製造直後の放電時間を1oo%とし、
これに対して各保存日数経過後の放電時間をパーセント
表示したものである。さらに前述の従来品として使用し
たララット状に固定圧着された成型品は、大量生産の途
中においては、電池構成時の圧力でセパレータを切断す
る危険性が常にある。又薄型になるにつれ成型性が悪く
なる。しかし本発明はバリや鋭利な刃状端部が環状溝部
状に固定圧着されているため、これらの問題を解決でき
る。A silver oxide battery 5kt44 was made using the positive electrode part of the present invention, and the size of the shape *1 between this and the conventional product of the same shape shown in Fig. 2 was measured after fixing and crimping in the annular groove shape. be. In addition, *2 storage capacity remaining rate (the number of discharged units is 1 each)
0 pieces), the discharge resistance 15 is Ω, the discharge time immediately after manufacture is 1oo% for the discharge time up to the final voltage 1.4V,
On the other hand, the discharge time after each storage day is expressed as a percentage. Furthermore, in the case of the molded product fixed and crimped in a Larrat shape used as the conventional product mentioned above, there is always a risk that the separator may be cut due to the pressure during battery construction during mass production. Furthermore, as the thickness becomes thinner, the moldability deteriorates. However, in the present invention, these problems can be solved because the burrs and sharp blade-like ends are fixed and crimped in the annular groove shape.
以上のとおり、本発明によるボタン9アルカリ電池は保
存信頼性に優れ量産性にも適したものである。As described above, the button 9 alkaline battery according to the present invention has excellent storage reliability and is suitable for mass production.
第1図は本発明のボタン形アルカリ電池に用いた正極成
型部の一例を示す断面図、第2図は正極台座を用いた酸
化銀電池の断面図、第3図は従来の正極成型部を示す断
面図である。
1・・・・・・正極合剤、2・・・・・・正極ケース、
3・・・・・・正極台座、a・・・・・・口縁。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図
I
第3図Figure 1 is a cross-sectional view showing an example of a positive electrode molding part used in the button-type alkaline battery of the present invention, Figure 2 is a cross-sectional view of a silver oxide battery using a positive electrode pedestal, and Figure 3 is a cross-sectional view of a conventional positive electrode molding part. FIG. 1... Positive electrode mixture, 2... Positive electrode case,
3... Positive electrode pedestal, a... Mouth rim. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure I Figure 3
Claims (1)
負極に向けて打抜かれたものであり、かつこの打抜きに
より生じたバリあるいは鋭利な断面先端部を、正極に押
圧して環状溝部状に固定圧着したことを特徴とするボタ
ン形アルカリ電池。The horizontal central punching part of the positive electrode pedestal with an inverted L-shaped cross section is punched out from the positive electrode toward the negative electrode, and the burr or sharp cross-sectional tip produced by this punching is pressed against the positive electrode to form an annular groove. A button-shaped alkaline battery characterized by being fixed and crimped in a shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7297185A JPS61232561A (en) | 1985-04-05 | 1985-04-05 | Button type alkaline battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7297185A JPS61232561A (en) | 1985-04-05 | 1985-04-05 | Button type alkaline battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61232561A true JPS61232561A (en) | 1986-10-16 |
Family
ID=13504780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7297185A Pending JPS61232561A (en) | 1985-04-05 | 1985-04-05 | Button type alkaline battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61232561A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016170909A (en) * | 2015-03-11 | 2016-09-23 | 日立マクセル株式会社 | Flat battery |
-
1985
- 1985-04-05 JP JP7297185A patent/JPS61232561A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016170909A (en) * | 2015-03-11 | 2016-09-23 | 日立マクセル株式会社 | Flat battery |
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