JPH04280063A - Manufacture of flat type cell - Google Patents
Manufacture of flat type cellInfo
- Publication number
- JPH04280063A JPH04280063A JP3041554A JP4155491A JPH04280063A JP H04280063 A JPH04280063 A JP H04280063A JP 3041554 A JP3041554 A JP 3041554A JP 4155491 A JP4155491 A JP 4155491A JP H04280063 A JPH04280063 A JP H04280063A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- positive
- manufacturing
- heat
- window frame
- 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 18
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000007773 negative electrode material Substances 0.000 abstract description 5
- 239000007774 positive electrode material Substances 0.000 abstract description 4
- 239000003792 electrolyte Substances 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000003566 sealing material Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 6
- -1 polypropylene Polymers 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000010248 power generation Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、薄形機器、例えばＩＣ
カード，電卓等の電源となる偏平形電池の製造法に関す
るものであり、詳しくは正，負極ケースをレーザー光を
用いてシート材料を窓枠状に切断して形成し、その内部
に発電要素を収納して構成される偏平形電池の製造法に
関するものである。[Industrial Application Field] The present invention is applicable to thin devices, such as ICs.
This relates to a method for manufacturing flat batteries that serve as power sources for cards, calculators, etc. Specifically, the positive and negative electrode cases are formed by cutting a sheet material into a window frame shape using laser light, and a power generating element is placed inside the case. The present invention relates to a method of manufacturing a flat battery configured to be housed.
【０００２】0002
【従来の技術】この種の電池は、代表的には図１の半断
面図に示す構造をもち、図３に示す方法で製造されてい
た。すなわち、有機溶媒電解液を含浸させたポリプロピ
レン不織布からなるセパレーター１と、金属ハロゲン化
物，金属酸化物などからなる正極活物質２と、リチウム
からなる負極活物質３とで発電要素を構成する。一方こ
れとは別に金型を用いて帯状のステンレス鋼板、あるい
はステンレス鋼板上にニッケルメッキを施したシート材
料から、中央部を膨出させた正極ケース５と、平板状の
負極ケース６をそれぞれ所定の寸法より大きめに打ち抜
き、その周縁部に前もって窓枠状に打ち抜かれたポリエ
チレン，ポリプロピレン，テフロンなどからなるシール
材４を加熱溶着する。中央部を膨出させた正極ケース５
側に前記の発電要素を納めた後、負極ケース６を所定の
電池寸法に打ち抜き、正極ケース５にシール側を重ね合
わせた後、負極ケース６の周縁部を１５０〜２５０℃で
加熱しシール材を溶着することにより発電要素を密封口
する。そして最後に正極ケース５を金型を用い所定の電
池寸法を打ち抜いていた。次に、図３に具体的な構成の
手順を示す。帯状の正，負極ケース５，６はその厚みが
０．０２〜０．０５ｍｍと極めて薄いため、金型により
図３のイに示すシート材料から前もって設けた２箇所の
位置規制用の穴７を含め予め電池寸法よりも大きい原板
Ａを同図ロのように打ち抜いた後、マガジン１０の内部
にこれを重ねて収納し（同図ハ）、一枚毎に取り出し同
図ニに示すホルダー９の上面に設けた位置規制用のピン
８を穴７に挿入しセットする。しかし原板Ａをマガジン
１０の内部より取り出す場合、積み重ね圧力が加わって
密着していると、数枚が重なって取り出されることがあ
る。このためピン８を穴７に正しく挿入できず、製造ト
ラブルが発生していた。2. Description of the Related Art This type of battery typically has a structure shown in the half-sectional view of FIG. 1, and has been manufactured by the method shown in FIG. 3. That is, a power generation element is composed of a separator 1 made of a polypropylene nonwoven fabric impregnated with an organic solvent electrolyte, a positive electrode active material 2 made of a metal halide, a metal oxide, etc., and a negative electrode active material 3 made of lithium. Separately, using a mold, a positive electrode case 5 with a bulging center and a flat negative electrode case 6 are formed from a belt-shaped stainless steel plate or a sheet material made of nickel plating on a stainless steel plate. A sealing material 4 made of polyethylene, polypropylene, Teflon, etc. previously punched out into the shape of a window frame is heat-welded to the peripheral edge of the die. Positive electrode case 5 with a bulged center part
After storing the above-mentioned power generation element on the side, the negative electrode case 6 is punched out to the predetermined battery dimensions, and the sealed side is overlapped with the positive electrode case 5.The peripheral edge of the negative electrode case 6 is heated at 150 to 250°C to form a sealing material. The power generation element is sealed by welding. Finally, the positive electrode case 5 was punched out to a predetermined battery size using a mold. Next, FIG. 3 shows a specific configuration procedure. Since the band-shaped positive and negative electrode cases 5 and 6 are extremely thin, with a thickness of 0.02 to 0.05 mm, two position regulating holes 7 are formed in advance from the sheet material shown in FIG. 3A using a mold. After punching out original sheets A larger than the battery dimensions in advance as shown in FIG. Insert and set the position regulating pin 8 provided on the top surface into the hole 7. However, when taking out the original sheets A from the inside of the magazine 10, if stacking pressure is applied and the sheets are in close contact with each other, several sheets may be taken out in a pile. For this reason, the pin 8 could not be inserted correctly into the hole 7, leading to manufacturing troubles.
【０００３】さらに、前記正，負極ケース５，６をピン
８にセットした後、前もって所定の形状に打ち抜かれた
シール材４を同図ホのように配してその上部より加熱溶
着し、その後負極ケース６を金型を用いて所定寸法に打
ち抜き（同図へ）、シール材４に重ね合わせて正極ケー
ス５に配備し、負極ケース６の周縁部を加熱溶着してい
た。ところが負極ケース６を所定寸法に打ち抜き、正極
ケース５に配備すると負極ケース６に位置ズレが生じ、
前記発電要素を組み込んで密封口した後、電気特性を確
認すると内部短絡が発生することが判明した。Furthermore, after the positive and negative electrode cases 5 and 6 are set on the pin 8, a sealing material 4 previously punched into a predetermined shape is arranged as shown in FIG. The negative electrode case 6 was punched out to a predetermined size using a mold (see the same figure), placed on the sealing material 4 and placed in the positive electrode case 5, and the peripheral edge of the negative electrode case 6 was heat-welded. However, when the negative electrode case 6 is punched out to a predetermined size and placed in the positive electrode case 5, a positional shift occurs in the negative electrode case 6.
After the power generation element was assembled and sealed, the electrical characteristics were checked and it was found that an internal short circuit occurred.
【０００４】以上のように従来の製造方法では、電池の
構成および電気特性に悪影響を与えるという問題があっ
た。さらに、金型を用いた加工方法であるため形状変化
への対応が困難であった。As described above, the conventional manufacturing method has the problem of adversely affecting the structure and electrical characteristics of the battery. Furthermore, since the processing method uses a mold, it is difficult to respond to changes in shape.
【０００５】[0005]
【発明が解決しようとする課題】上記のように従来の方
法では、正，負極ケースが０．０２〜０．０５ｍｍと薄
く窓枠状に打ち抜いた後、単品毎の構成方法を用いてい
るためマガジンよりケース取り出し時における工程トラ
ブル、あるいは、負極ケースを所定の形状に打ち抜き正
極ケースに重ねる工程において負極ケースにズレが発生
し、電気特性に悪影響を与えていた。この種の電池は、
ＩＣカードのメモリー保持電源として使用されるため、
高品質とくに長期信頼性が要求され、加えて多岐にわた
る電池の外径形状が要望されている。[Problems to be Solved by the Invention] As mentioned above, in the conventional method, the positive and negative electrode cases are punched out into window frame shapes as thin as 0.02 to 0.05 mm, and then constructed individually. There were process problems when removing the case from the magazine, or misalignment of the negative electrode case occurred during the process of punching the negative electrode case into a predetermined shape and stacking it on the positive electrode case, which adversely affected the electrical characteristics. This type of battery is
Because it is used as a memory retention power source for IC cards,
High quality, especially long-term reliability, is required, and in addition, a wide variety of battery outer diameter shapes are required.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記問題点を
解消するために帯状の金属製正，負極ケースの平面部を
レーザー光を用いて、一部に未切断部を残して窓枠状に
任意の形状に切断するものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention uses a laser beam to cut the flat parts of the band-shaped metal positive and negative electrode cases, leaving some uncut parts and cutting them into the window frame. It can be cut into any desired shape.
【０００７】[0007]
【作用】この構成を用いれば、多岐にわたる形状に対し
て簡単に対応が可能となる。また、正，負極ケース５，
６を帯状で加工，構成が可能となり電池製造において安
定化が図れる。これは、従来の方法では帯状の正，負極
ケース５，６を金型を用いて窓枠状に打ち抜き、マガジ
ン１０の内部に積み上げ収納し、吸着チップを介し取り
出すと同時に数枚取り出され製造トラブルが発生してい
た。さらに、負極ケース６を正極ケース５に重ねる工程
で負極ケース６のズレによる不良が発生していた。[Operation] Using this configuration, it is possible to easily handle a wide variety of shapes. In addition, positive and negative electrode cases 5,
6 can be processed and constructed in the form of a strip, which can stabilize battery manufacturing. In the conventional method, the strip-shaped positive and negative electrode cases 5 and 6 are punched out into a window frame shape using a mold, stacked and stored inside the magazine 10, and taken out through a suction chip at the same time, which causes manufacturing problems. was occurring. Furthermore, in the process of stacking the negative electrode case 6 on the positive electrode case 5, defects occurred due to misalignment of the negative electrode case 6.
【０００８】ところが、本発明ではレーザー光による切
断を用いることにより、帯状の正，負極ケース５，６に
は位置規制用の穴７を前もって開けておきこの穴７をホ
ルダー９に設けた位置規制用のピン８に挿入することに
より精度の高い位置規制を確保できる。このようにして
配備した正，負極ケース５，６を一部未切断部Ｂを数箇
所残し所定の窓枠状に切断加工する。その後次工程にお
いてシール材４を正，負極ケース５，６の平面部に配備
し加熱溶着した後、負極ケース６を取り出し正極ケース
５のピン８に挿入することによりズレが発生しない信頼
性の高い電池の製造が可能となり、内部短絡の問題が解
消された。尚、レーザー光を用いた窓枠状の切断におい
て未切断部Ｂを数箇所残す必要性は、上記で述べたよう
に正，負極ケース５，６を精度よく重ね合わすためであ
る。However, in the present invention, by using cutting with a laser beam, holes 7 for position regulation are made in advance in the band-shaped positive and negative electrode cases 5 and 6, and the holes 7 are provided in the holder 9 for position regulation. By inserting it into the pin 8 for use, highly accurate position regulation can be ensured. The positive and negative electrode cases 5 and 6 thus arranged are cut into a predetermined window frame shape, leaving several uncut portions B. After that, in the next process, the sealing material 4 is placed on the flat surfaces of the positive and negative electrode cases 5 and 6 and heated and welded, and then the negative electrode case 6 is taken out and inserted into the pin 8 of the positive electrode case 5, which is highly reliable and does not cause misalignment. It became possible to manufacture batteries, and the problem of internal short circuits was solved. The reason why it is necessary to leave several uncut portions B in cutting into a window frame shape using a laser beam is to accurately overlap the positive and negative electrode cases 5 and 6 as described above.
【０００９】[0009]
【実施例】以下、図面とともに本発明の実施例を示す。
図１は電池の半断面図で有機溶媒としてプロピレンカー
ボネートに１モル／ｌの過塩素酸リチウムを含有した電
解液を包浸させたポリプロピレン不織布からなるセパレ
ーター１の上面に二酸化マンガンとカーボンと結着剤を
混練してシート状にした正極活物質２を配備し、下面に
はリチウムからなる負極活物質３を配備し、中央部を外
側へ膨出させたステンレス鋼板からなる正極ケース５と
、平板状からなる負極ケース６で包含し、正極ケース５
と負極ケース６の周縁部をポリプロピレンからなるシー
ル材４を重ね合わせて、その正極ケース５と負極ケース
６に熱を加え加圧溶着し密封口した電池外形が２３×２
３ｍｍ，厚み０．５ｍｍを有した偏平形電池である。図
２で、炭酸ガスレーザー光を用いた製造方法について説
明する。図２のイで示すように帯状で板幅が５０ｍｍ，
厚みが０．０３ｍｍのステンレス鋼板からなる正，負極
ケース５，６の長手方向の片側に前もって位置規制用の
穴７を一定のピッチ間隔で設け、同図ロに示す次工程の
ホルダー９の上面に設けた位置規制用のピン８に挿入す
る。[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Figure 1 is a half-sectional view of a battery, in which manganese dioxide and carbon are bonded to the upper surface of a separator 1 made of a polypropylene nonwoven fabric immersed in an electrolytic solution containing 1 mol/l of lithium perchlorate in propylene carbonate as an organic solvent. A positive electrode active material 2 made of a sheet formed by kneading an agent is provided, a negative electrode active material 3 made of lithium is provided on the lower surface, a positive electrode case 5 made of a stainless steel plate with a central part bulged outward, and a flat plate. It is enclosed in a negative electrode case 6 consisting of a shape, and a positive electrode case 5
A sealing material 4 made of polypropylene is overlapped on the peripheral edge of the negative electrode case 6 and the positive electrode case 5 and the negative electrode case 6 are welded under heat and sealed to form a sealed battery with an external size of 23×2.
It is a flat battery with a diameter of 3 mm and a thickness of 0.5 mm. A manufacturing method using carbon dioxide laser light will be explained with reference to FIG. As shown in Fig. 2 A, the plate is strip-shaped and has a width of 50 mm.
Holes 7 for position regulation are provided in advance at a constant pitch on one side in the longitudinal direction of the positive and negative electrode cases 5 and 6 made of stainless steel plates with a thickness of 0.03 mm, and the upper surface of the holder 9 for the next process shown in FIG. Insert it into the position regulating pin 8 provided at.
【００１０】その後、炭酸ガスレーザー光を用いて未切
断部Ｂを２箇所残し、窓枠状に切断する。この場合のレ
ーザー光源の出力は４０Ｗで切断スピード４ｍ／分を用
いて行った。次に、同図ハに示すポリプロピレンからな
る帯状で窓枠状に加工した厚みが０．０７〜０．１ｍｍ
のシール材４を正，負極ケース５，６に配備し圧力を加
え熱溶着した後、負極ケース６を取り出し正極側のピン
８にシール面を重ね合わせて挿入する。その後前記中央
部を外側へ窓枠状に膨出させた周縁部の一辺を加熱溶着
する。このようにして構成した後、同図ニに示すように
正極ケース５の凹部に正極活物質２とセパレーター１と
負極活物質３を順次配備した後、加熱溶着した一辺を座
とし、左右二辺を加熱溶着し電解液を注入後、残る一辺
を加熱溶着し密封口して電池を連続的に製造した。尚、
正，負極ケース５，６の未切断部Ｂは金型を用いて最後
に切断した。以下に厚み０．０３ｍｍの正，負極ケース
５，６を窓枠状に切断しバリが生じない領域を確認する
ため、炭酸ガスレーザーを用いて光源出力と切断スピー
ドを組合せて得た結果を（表１）に示す。[0010] Thereafter, the film is cut into a window frame shape using a carbon dioxide gas laser beam, leaving two uncut portions B. In this case, the output of the laser light source was 40 W and the cutting speed was 4 m/min. Next, a strip made of polypropylene shown in Figure C is processed into a window frame shape with a thickness of 0.07 to 0.1 mm.
After the sealing material 4 is arranged in the positive and negative electrode cases 5 and 6 and heat-welded by applying pressure, the negative electrode case 6 is taken out and inserted into the positive electrode side pin 8 with the sealing surfaces overlapped. Thereafter, one side of the peripheral portion of the central portion bulged outward in the shape of a window frame is heat welded. After constructing in this way, as shown in Figure D, the positive electrode active material 2, the separator 1, and the negative electrode active material 3 are sequentially placed in the recessed part of the positive electrode case 5, and then one heat-welded side is used as a seat, and the left and right sides are After heat welding and injecting electrolyte, the remaining side was heat welded and the opening was sealed to continuously manufacture batteries. still,
The uncut portions B of the positive and negative electrode cases 5 and 6 were finally cut using a mold. The following shows the results obtained by cutting the positive and negative electrode cases 5 and 6 with a thickness of 0.03 mm into a window frame shape, and combining the light source output and cutting speed using a carbon dioxide laser in order to confirm the area where no burrs occur. Table 1) shows the results.
【００１１】[0011]
【表１】[Table 1]
【００１２】レーザー光源出力（Ｗ），切断スピード（
ｍ／分）を用いて行った。[0012] Laser light source output (W), cutting speed (
m/min).
【００１３】（表１）の実験により次のことが判明した
。
（１）バリ発生に対しては、レーザー光源出力と切断ス
ピードに相関性があることが判明した。The experiment shown in Table 1 revealed the following. (1) It was found that there is a correlation between laser light source output and cutting speed with respect to burr generation.
【００１４】（２）（表１）の印をつけた範囲において
は、切断部においてバリ発生のないことが確認された。(2) In the range marked in Table 1, it was confirmed that no burrs were generated at the cut portion.
【００１５】（３）レーザー光源出力が１２０Ｗを超え
る領域においては、切断面に茶褐色の焼け現象が生じる
ことが確認された。(3) It was confirmed that in a region where the laser light source output exceeds 120 W, a brownish burn phenomenon occurs on the cut surface.
【００１６】（４）正，負極ケースの厚みを０．０２，
０．０４，０．０５ｍｍを用いて上記と同様の実験を行
った。その結果、薄いものは切断スピードを速く、厚い
ものは切断スピードを遅くすることにより切断バリが生
じないことが確認されている。尚、ＹＡＧレーザーを用
いた実験も合わせて行った。その結果、炭酸ガスレーザ
ーと比較すると正，負極ケースの厚みが０．０２〜０．
０３ｍｍの領域において切断部においてバリ発生がわず
かではあるが認められたが問題になる範囲ではない。(4) The thickness of the positive and negative electrode cases is 0.02,
An experiment similar to the above was conducted using 0.04 and 0.05 mm. As a result, it has been confirmed that cutting burrs do not occur by cutting at a faster cutting speed for thinner pieces and slower cutting speed for thicker pieces. Incidentally, an experiment using a YAG laser was also conducted. As a result, compared to a carbon dioxide laser, the thickness of the positive and negative electrode cases is 0.02~0.
A slight amount of burr was observed at the cut portion in the 0.03 mm range, but this was not a problem.
【００１７】以上のことから総合的に判断すると薄物の
金属加工においては炭酸ガスレーザーが最適である。Judging from the above, a carbon dioxide laser is most suitable for processing thin metals.
【００１８】[0018]
【発明の効果】このように本発明によれば、レーザー光
を用いた正，負極ケースの切断において、従来の金型を
用いた切断と比較しても遜色のない切断面が得られた。
また、レーザー光を用いることにより簡単に任意の形状
を得ることが可能となった。さらに、従来は各部品を単
品ごとに構成していたため量産性が極端に悪く効率の悪
い作り方であったが、レーザー光を用いることにより、
高信頼性の電池を連続的に製造できるという効果が得ら
れた。As described above, according to the present invention, when cutting the positive and negative electrode cases using a laser beam, a cut surface comparable to cutting using a conventional mold was obtained. Furthermore, by using laser light, it has become possible to easily obtain any shape. Furthermore, in the past, each part was configured individually, which made mass production extremely difficult and inefficient, but by using laser light,
The effect was that highly reliable batteries could be manufactured continuously.
【図１】本発明の実施例における電池の半断面図FIG. 1: Half cross-sectional view of a battery in an embodiment of the present invention
【図２
】本発明による電池の組立過程を示す図であり、（イ）
シート材料からケースを切断する図、（ロ）位置規制用
ピンをもつホルダーの上面図、（ハ）窓枠状シール材を
示す図、（ニ）偏平形電池の組立状態を示す断面図[Figure 2
] It is a diagram showing the assembly process of the battery according to the present invention, (a)
(b) A top view of the holder with position regulating pins, (c) A view showing the window frame-shaped sealing material, (d) A cross-sectional view showing the assembled state of the flat battery.
【図３】従来の電池の組立過程を示す図であり、（イ）
シート材料を示す図、（ニ）原板Ａをマガジンに収納し
た図、（ニ）ピンをもつホルダーを示す図、（ホ）シー
ル材を示す図、（ヘ）シール材を重ね合わせた正極ケー
スを示す図FIG. 3 is a diagram showing the assembly process of a conventional battery, (a)
Diagram showing sheet material, (d) Diagram showing original plate A stored in a magazine, (d) Diagram showing holder with pin, (e) Diagram showing sealing material, (f) Diagram showing positive electrode case with overlapping sealing material. Diagram shown
【符号の説明】 １ セパレーター ２ 正極活物質 ３ 負極活物質 ４ シール材 ５ 正極ケース ６ 負極ケース ７ 位置規制用穴 ８ 位置規制用ピン ９ ホルダー １０ マガジン Ａ 窓枠状 Ｂ 未切断部[Explanation of symbols] 1 Separator 2 Cathode active material 3 Negative electrode active material 4 Sealing material 5 Positive electrode case 6 Negative electrode case 7 Position regulation hole 8 Position regulation pin 9 Holder 10 Magazine A Window frame shape B Uncut part
Claims (6)
ースを、レーザー光を用いてシート材料から窓枠状に切
断することを特徴とする偏平形電池の製造法。1. A method for manufacturing a flat battery, which comprises cutting a band-shaped metal case, which also serves as positive and negative electrode terminals, from a sheet material into a window frame shape using laser light.
ーザーを用いる請求項１記載の偏平形電池の製造法。2. The method for manufacturing a flat battery according to claim 1, wherein a YAG or carbon dioxide laser is used as the laser light source.
０Ｗの範囲である請求項２記載の偏平形電池の製造法。Claim 3: The irradiation output of the laser light is from 10W to 10W.
3. The method for manufacturing a flat battery according to claim 2, wherein the power is in the range of 0W.
スの厚みが０．０２〜０．０５ｍｍである請求項１記載
の偏平形電池の製造法。4. The method for manufacturing a flat battery according to claim 1, wherein the strip-shaped metal case serving as both the positive and negative electrode terminals has a thickness of 0.02 to 0.05 mm.
スの材質が、ステンレス鋼板、あるいはステンレス鋼板
にニッケルメッキを施したものである請求項４記載の偏
平形電池の製造法。5. The method for manufacturing a flat battery according to claim 4, wherein the material of the band-shaped metal case that serves as both the positive and negative electrode terminals is a stainless steel plate or a nickel-plated stainless steel plate.
ースをシート材料から切断する際、少なくとも窓枠状の
切断部に１箇所以上未切断部分を残すことを特徴とする
請求項５記載の偏平形電池の製造法。6. The method according to claim 5, wherein when cutting the band-shaped metal case serving as the positive and negative electrode terminals from the sheet material, one or more uncut portions are left in at least the window frame-shaped cut portion. A manufacturing method for flat batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3041554A JPH04280063A (en) | 1991-03-07 | 1991-03-07 | Manufacture of flat type cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3041554A JPH04280063A (en) | 1991-03-07 | 1991-03-07 | Manufacture of flat type cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04280063A true JPH04280063A (en) | 1992-10-06 |
Family
ID=12611648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3041554A Pending JPH04280063A (en) | 1991-03-07 | 1991-03-07 | Manufacture of flat type cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04280063A (en) |
-
1991
- 1991-03-07 JP JP3041554A patent/JPH04280063A/en active Pending
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