JPS62202454A - Manufacture of flat type battery - Google Patents
Manufacture of flat type batteryInfo
- Publication number
- JPS62202454A JPS62202454A JP61043182A JP4318286A JPS62202454A JP S62202454 A JPS62202454 A JP S62202454A JP 61043182 A JP61043182 A JP 61043182A JP 4318286 A JP4318286 A JP 4318286A JP S62202454 A JPS62202454 A JP S62202454A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- insulating gasket
- terminal plate
- positive
- negative
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 abstract description 12
- 238000002788 crimping Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- 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
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、コイン形リチウム電池やボタン形アルカリ
電池などの偏平形電池の製造方法に関するもので必る。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for manufacturing flat batteries such as coin-shaped lithium batteries and button-shaped alkaline batteries.
〈従来の技術〉
上記のような偏平形電池では、円盤状の端子板と有底短
円筒状の電池缶とを組合せてなる電池ケース内に発電要
素を収納し、端子板外周部と電池缶間口部との間に介在
させた６−６ナイロンやポリプロピレンなどの合成樹脂
製の絶縁ガスケットによって電池ケースの封口を行なう
構造が取られている。例えばコイン形リチウム電池の場
合、正極缶の底面に正極合剤、セパレータを順次載置し
て正極部を形成し、また、周縁に折返し部を形成した円
盤状の負極端子板の底面にリチウム負極を圧着して負極
部を作った後、正極部に電解液を注入し、断面が略り字
状の絶縁ガスケットを負極端子板の外周に嵌挿し、次い
で絶縁ガスケット外周と電池缶内周面とが対向するよう
に正極部と負極部とを組合せ、最後に電池缶間口部を内
側にクリンプして絶縁ガスケツ！・を外側から締付ける
といった手順で作製される。<Prior art> In a flat battery as described above, a power generating element is housed in a battery case which is a combination of a disc-shaped terminal plate and a short cylindrical battery can with a bottom, and the outer periphery of the terminal plate and the battery can are The battery case is sealed with an insulating gasket made of synthetic resin such as 6-6 nylon or polypropylene interposed between the battery case and the opening. For example, in the case of a coin-shaped lithium battery, the positive electrode part is formed by sequentially placing a positive electrode mix and a separator on the bottom of a positive electrode can, and the lithium negative electrode is placed on the bottom of a disc-shaped negative terminal plate with a folded part on the periphery. After creating a negative electrode part by crimping, electrolyte is injected into the positive electrode part, an insulating gasket with an abbreviated cross-section is fitted onto the outer periphery of the negative electrode terminal plate, and then the outer periphery of the insulating gasket and the inner circumferential surface of the battery can are connected. Combine the positive and negative electrode parts so that they are facing each other, and finally crimp the front part of the battery can inside to form an insulating gasket!・It is manufactured by tightening it from the outside.
〈発明か解決しようとする問題点〉
しかしながら、偏平形電池では、電池内部に発電要素が
詰め込まれていて各要素間の相対空間が少なく、このた
め、上述のように正極部と負極部とを組合せた状態にお
いて、組合せ時の押圧力によってセパレータなどに含有
されていた電解液が押出され、その一部が端子板と絶縁
ガスケットとの間を介して、端子板外周側（端子板外周
部と絶縁ガスケット内周部との間隙、端子板周縁の折返
し部の環状凹溝なと）に漏出する結果、次工程でのクリ
ンプ時に電池外部に電解液が液出することがおるという
問題がある。<Problem to be solved by the invention> However, in a flat battery, the power generating elements are packed inside the battery, and there is little relative space between each element, so as mentioned above, the positive electrode part and the negative electrode part are separated. In the assembled state, the electrolytic solution contained in the separator etc. is pushed out by the pressing force at the time of assembly, and a part of it passes between the terminal board and the insulating gasket to the outer peripheral side of the terminal board (the outer peripheral part of the terminal board). As a result of the electrolyte leaking into the gap with the inner peripheral part of the insulating gasket and the annular groove in the folded part of the terminal plate periphery, there is a problem that the electrolyte may leak out to the outside of the battery during crimping in the next process.
そして、■電解液の一部が漏出し、所定伍の電解液が電
池内に充填されないので、内部抵抗が上昇したり電池放
電性能が低下し、電気的特性が低調となる、■クリンプ
後において端子板付近に残っている電解液が電池保存中
または使用中における漏液の原因となる、またこのため
、■クリンプした後に電池を洗浄する工程を要する、等
といった数々の不都合がでてくる。Then, ■ some of the electrolyte leaks out, and the specified level of electrolyte is not filled into the battery, resulting in an increase in internal resistance, a decrease in battery discharge performance, and poor electrical characteristics; ■ after crimping. The electrolyte remaining near the terminal board causes leakage during battery storage or use, and this causes a number of inconveniences, such as (1) requiring a step to clean the battery after crimping.
〈問題点を解決するための手段〉
この発明の偏平形電池の製造方法は、円盤状の端子板の
外周に断面が略り字状で環状の絶縁−ガスケットを嵌挿
した後、これらを有底短円筒状の電池缶内に収納し、電
池缶間口部を内側にクリンプして絶縁ガスケットを外側
から締（＝ｆけることにより内部に発電要素を密封入す
る電池ケースを形成するようにした偏平形電池の製造方
法において、端子板と絶縁ガスケットとの嵌挿後からこ
れらを電池缶に収納するまでの間に、端子板と絶縁ガス
ケットとの対向面の少なくとも一部を環状に溶着または
接着することを要旨とする。<Means for Solving the Problems> The method for manufacturing a flat battery of the present invention involves fitting an annular insulating gasket with an abbreviated cross section to the outer periphery of a disc-shaped terminal plate, and then inserting the annular insulating gasket into the outer periphery of a disc-shaped terminal plate. The battery is housed in a cylindrical battery can with a short bottom, the opening of the battery can is crimped inward, and an insulating gasket is tightened from the outside to form a battery case that seals the power generation element inside. In the method of manufacturing a flat battery, at least a portion of the opposing surfaces of the terminal plate and insulating gasket are welded or bonded in a ring shape after the terminal plate and insulating gasket are inserted and before they are stored in a battery can. The gist is to do so.
上記のように端子板と絶縁ガスケットとを溶着する手段
としては、例えば、端子板に絶縁ガスケットを嵌挿した
後に絶縁ガスケットが変形しない程度の温度（２００’
Ｃ程度）に加熱して両者を溶着したり、嵌挿後に超音波
溶接やインパルス溶接などによって溶着するといった方
法を用いればよい。また接着する手段としては、例えば
ポリエチレン系ボットメルト樹脂を加熱して溶かした状
態で、端子板必るいは絶縁ガスケットの少なくともいず
れか一方に塗布しておき、その後両者を組合せるといっ
た方法を用いればよい。As a means for welding the terminal board and the insulating gasket as described above, for example, the temperature (200'
The two may be welded together by heating to a temperature of about C), or by ultrasonic welding, impulse welding, or the like after insertion. In addition, as a means of adhesion, for example, a method may be used in which polyethylene-based Botmelt resin is heated and melted and applied to at least either the terminal board or the insulating gasket, and then the two are combined. .
〈作 用〉
上記手段を用いることにより、電池製造工程において、
正極部と負極部とを組合せた状態あるいは組合せ後にク
リンプした時にも、端子板と絶縁ガスケットとの間の環
状の溶着面おるいは接着面によって電解液の漏出が阻止
される。<Function> By using the above means, in the battery manufacturing process,
Even when the positive electrode part and the negative electrode part are combined or crimped after being combined, leakage of the electrolyte is prevented by the annular welding surface or adhesive surface between the terminal plate and the insulating gasket.
尚、以上のような端子板と絶縁ガスケットとの溶着また
は接着は、電池缶のクリンプ終了時点までの間にあける
液密を保つ程度のもので必要十分でおる。The welding or adhesion between the terminal board and the insulating gasket as described above is necessary and sufficient to maintain liquid tightness until the end of crimping of the battery can.
〈実施例〉
以上、添付図面を用いて、この発明をコイン形リチウム
電池に適用した実施例について説明する。<Example> Hereinafter, an example in which the present invention is applied to a coin-shaped lithium battery will be described using the accompanying drawings.
第１図（Ａ）において、周縁に折返し部１ｂが形成され
た円盤状の負極端子板１の底面にはそれより小径のコイ
ン状のリチウム負極２が圧着されて負極部が構成されて
いる。そして、負極端子板１の外周部１ａと、断面が略
り字状で環状の絶縁ガスケット３の内周部３ａは、負極
端子板１の外周に絶縁ガスケット３を図のように嵌挿し
た後に、超音波溶接によって環状に溶着（図中■の範囲
の少なくとも一部を環状に溶着）されている。次いで、
有底短円筒状の正極缶４の底面に、コイン状に加圧成形
された正極合剤５を載置し、更に正極合剤５の上面にセ
パレータ６を載置して構成した正極部に電解液を所定量
注入した後、第１図（Ｂ）のように、この正極部と上記
負極部並びに絶縁ガスケット３とを組合せる。組合せ後
は、第１図（Ｃ）のように、正極缶４の開口部４ａを内
側にクリンプして絶縁ガスケット３を外側から締（＝Ｊ
けて正極缶開口部と負極端子板外周部との間で挟持する
。In FIG. 1(A), a coin-shaped lithium negative electrode 2 having a smaller diameter is crimped onto the bottom surface of a disk-shaped negative electrode terminal plate 1 with a folded portion 1b formed on the periphery to form a negative electrode portion. The outer circumferential portion 1a of the negative electrode terminal plate 1 and the inner circumferential portion 3a of the insulating gasket 3, which has an annular cross-section and an oval shape, are formed after the insulating gasket 3 is fitted onto the outer circumference of the negative electrode terminal plate 1 as shown in the figure. , are welded in a ring shape by ultrasonic welding (at least a part of the area marked ■ in the figure is welded in a ring shape). Then,
A positive electrode mixture 5 press-molded into a coin shape is placed on the bottom of a short cylindrical positive electrode can 4 with a bottom, and a separator 6 is further placed on the top of the positive electrode mixture 5. After injecting a predetermined amount of electrolyte, the positive electrode part, the negative electrode part, and the insulating gasket 3 are combined as shown in FIG. 1(B). After assembling, as shown in FIG.
and sandwich it between the positive electrode can opening and the outer periphery of the negative electrode terminal plate.
尚、この発明をボタン形アルカリ電池の場合にも同様に
適用できることは言うまでもない。It goes without saying that the present invention can be similarly applied to button-type alkaline batteries.
〈発明の効果〉
以上のように閏成されるこの発明の偏平形電池の製造方
法によれば、電池製造工程において正極部と負極部とを
組合せた時あるいは組合せ後にクリンプした時にも端子
板と絶縁ガスケットとの間の環状の溶着面あるいは接着
面によって電池内部の電解液の漏出が阻止されることか
ら、電解液漏出による電池の電気的特性の低下がなくな
り、電池保存中または使用中における漏液を防ぐことが
でき、更にクリンプ後の電池洗浄工程が不要となるので
、電池性能向上並びに電池製造時の工数低減を図れると
いった効果を奏する。<Effects of the Invention> According to the method for manufacturing a flat battery of the present invention, which is carried out as described above, the terminal plate and the negative electrode part are not connected to each other even when the positive electrode part and the negative electrode part are combined in the battery manufacturing process or when crimped after the combination. The annular welded or bonded surface between the insulating gasket prevents leakage of the electrolyte inside the battery, eliminating deterioration of the battery's electrical characteristics due to electrolyte leakage and preventing leakage during battery storage or use. Since liquid can be prevented and furthermore, a battery cleaning step after crimping is unnecessary, it is possible to improve battery performance and reduce the number of man-hours during battery manufacturing.
第１図（八）〜（Ｃ）はこの発明の実施例の製造工程を
示した説明図でおる。
１・・・負極端子板、３・・・絶縁ガスケット、４・・
・正極缶、１ａ・・・外周部、３ａ・・・内周部。
第１ 図（Ａ）
ど
笛 １図（Ｂ）
第１図（Ｃ）FIGS. 1(8) to 1(C) are explanatory diagrams showing the manufacturing process of an embodiment of the present invention. 1... Negative terminal plate, 3... Insulating gasket, 4...
- Positive electrode can, 1a...outer periphery, 3a...inner periphery. Figure 1 (A) Dobue Figure 1 (B) Figure 1 (C)
Claims (1)
縁ガスケットを嵌挿した後、これらを有底短円筒状の電
池缶内に収納し、電池缶間口部を内側にクリンプして絶
縁ガスケットを外側から締付けることにより内部に発電
要素を密封入する電池ケースを形成するようにした偏平
形電池の製造方法において、端子板と絶縁ガスケットと
の嵌挿後からこれらを電池缶に収納するまでの間に、端
子板と絶縁ガスケットとの対向面の少なくとも一部を環
状に溶着または接着することを特徴とする偏平形電池の
製造方法。1. After fitting an annular insulating gasket with a roughly L-shaped cross section to the outer periphery of the disc-shaped terminal plate, place these into a short cylindrical battery can with a bottom, and crimp the front part of the battery can inside. In this method of manufacturing a flat battery, a battery case is formed in which a power generating element is sealed inside by tightening an insulating gasket from the outside. 1. A method for manufacturing a flat battery, which comprises welding or bonding at least a portion of opposing surfaces of a terminal plate and an insulating gasket in a ring shape until the battery is stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61043182A JPS62202454A (en) | 1986-02-28 | 1986-02-28 | Manufacture of flat type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61043182A JPS62202454A (en) | 1986-02-28 | 1986-02-28 | Manufacture of flat type battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62202454A true JPS62202454A (en) | 1987-09-07 |
Family
ID=12656753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61043182A Pending JPS62202454A (en) | 1986-02-28 | 1986-02-28 | Manufacture of flat type battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62202454A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6456520A (en) * | 1987-08-28 | 1989-03-03 | Toshiba Machine Co Ltd | Control system of injection molding machine |
| JPS6456519A (en) * | 1987-08-28 | 1989-03-03 | Toshiba Machine Co Ltd | Control system of injection molding machine |
| JPH06349479A (en) * | 1993-06-11 | 1994-12-22 | Murata Mfg Co Ltd | Manufacture of flat power source element |
| WO1995010124A1 (en) * | 1993-10-04 | 1995-04-13 | Eveready Battery Company, Inc. | Process for ultrasonic sealing an anode cup into a gasket for electrochemical cells |
| WO1998013888A1 (en) * | 1996-09-27 | 1998-04-02 | Eveready Battery Company, Inc. | Galvanic cell having optimum internal volume for active components |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5795064A (en) * | 1980-12-03 | 1982-06-12 | Fuji Elelctrochem Co Ltd | Button-type alkaline battery |
-
1986
- 1986-02-28 JP JP61043182A patent/JPS62202454A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5795064A (en) * | 1980-12-03 | 1982-06-12 | Fuji Elelctrochem Co Ltd | Button-type alkaline battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6456520A (en) * | 1987-08-28 | 1989-03-03 | Toshiba Machine Co Ltd | Control system of injection molding machine |
| JPS6456519A (en) * | 1987-08-28 | 1989-03-03 | Toshiba Machine Co Ltd | Control system of injection molding machine |
| JPH06349479A (en) * | 1993-06-11 | 1994-12-22 | Murata Mfg Co Ltd | Manufacture of flat power source element |
| WO1995010124A1 (en) * | 1993-10-04 | 1995-04-13 | Eveready Battery Company, Inc. | Process for ultrasonic sealing an anode cup into a gasket for electrochemical cells |
| US5641367A (en) * | 1993-10-04 | 1997-06-24 | Eveready Battery Company | Process for ultrasonic sealing an anode cup into a gasket for electrochemical cells |
| WO1998013888A1 (en) * | 1996-09-27 | 1998-04-02 | Eveready Battery Company, Inc. | Galvanic cell having optimum internal volume for active components |
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