JPH11176394A - Manufacture of cylindrical battery - Google Patents
Manufacture of cylindrical batteryInfo
- Publication number
- JPH11176394A JPH11176394A JP9343032A JP34303297A JPH11176394A JP H11176394 A JPH11176394 A JP H11176394A JP 9343032 A JP9343032 A JP 9343032A JP 34303297 A JP34303297 A JP 34303297A JP H11176394 A JPH11176394 A JP H11176394A
- Authority
- JP
- Japan
- Prior art keywords
- drawing die
- opening end
- fitting
- open end
- cylindrical battery
- 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.)
- Withdrawn
Links
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Primary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は円筒型電池の製造方
法に係り、さらに詳しくはシールパッキンを圧縮・固定
する一次的な工程を有する円筒型電池の製造方法の改良
に関する。The present invention relates to a method of manufacturing a cylindrical battery, and more particularly to an improvement of a method of manufacturing a cylindrical battery having a primary step of compressing and fixing a seal packing.
【０００２】[0002]
【従来の技術】近年、携帯電話や携帯型ノートパソコン
などの電子機器類のコードレス化、高性能化、小形軽量
化が進められており、この種電子機器の電源として、円
筒型アルカリマンガン電池や円筒型二次電池の高容量化
が要求されている。そして、この高容量化の一手段と
し、円筒型電池外装缶の肉厚を0.25mmから、0.20mmと薄
くすることにより、電池外装缶の内容積を増大化し、発
電要素分の収納量を大きくすることが知られている。2. Description of the Related Art In recent years, cordless, high-performance, compact, and lightweight electronic devices such as mobile phones and portable notebook computers have been promoted. There is a demand for higher capacity cylindrical secondary batteries. As a means of increasing the capacity, the thickness of the cylindrical battery outer can is reduced from 0.25 mm to 0.20 mm, thereby increasing the internal volume of the battery outer can and increasing the storage capacity for the power generating element. It is known to
【０００３】ところで、上記円筒型電池は、一般的に、
次のような工程を径て製造されている。すなわち、先
ず、一端が開口する有底円筒形の金属製外装缶を用意
し、この金属製外装缶内に発電要素を収納・装着した
後、金属製外装缶の開口端側に、シールパッキングを介
して一方の電極端子を導出した封止板を位置決め配置す
る。次いで、前記封止板を位置決め配置した金属製外装
缶の開口端部をカール型に嵌合させ、カール型による圧
縮で金属製外装缶を縮径し、シールパッキングおよび封
止板を固定・支持する一方、開口端を内径方向に折り曲
げて気密に封止し、円筒型電池を製造している。なお、
前記開口端の内径方向への折り曲げ・気密封止に先立っ
て、金属製外装缶の開口端部に縮径加工を施し、一方の
電極端子を導出した封止板を位置決め支持する段部を内
壁面に設ける２段方式を採る場合もある。[0003] By the way, the above cylindrical battery is generally
It is manufactured by the following steps. That is, first, a metal outer can having a bottomed cylindrical shape having one end opened is prepared. After the power generation element is stored and mounted in the metal outer can, a seal packing is provided on the open end side of the metal outer can. The sealing plate from which one electrode terminal is led out is positioned and arranged. Then, the opening end of the metal outer can in which the sealing plate is positioned and arranged is fitted into a curl mold, the metal outer can is reduced in diameter by compression by the curl mold, and the seal packing and the sealing plate are fixed and supported. On the other hand, the open end is bent in the inner diameter direction and hermetically sealed to produce a cylindrical battery. In addition,
Prior to bending and hermetic sealing of the opening end in the inner diameter direction, the opening end of the metal outer can is subjected to diameter reduction processing, and a step portion for positioning and supporting a sealing plate from which one of the electrode terminals is led out is provided inside. In some cases, a two-stage system provided on a wall surface is employed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記円
筒型電池の製造方法の場合は、次ぎのような不都合があ
る。すなわち、円筒型金属製外装缶の肉厚が0.25mmの場
合は、上記カール型による折り曲げ・気密封止の点で、
特に、問題になることもないが、肉厚が0.20mmと薄い場
合は、金属製外装缶の開口端部が不正状な変形（軸方向
に交差する皺の発生や歪むなど）を招来し易く、結果的
に、気密な封止が困難となったり、あるいは封止部の整
形性などが劣ったりし、歩留まりが損なわれる恐れがあ
る。However, the method of manufacturing a cylindrical battery has the following disadvantages. That is, when the thickness of the cylindrical metal outer can is 0.25 mm, in terms of bending and hermetic sealing by the curl mold,
Although it does not cause any problem, if the wall thickness is as thin as 0.20 mm, the open end of the metal outer can is likely to be deformed irregularly (such as generation of wrinkles crossing in the axial direction or distortion). As a result, the hermetic sealing becomes difficult, or the shapeability of the sealing portion is deteriorated, and the yield may be impaired.
【０００５】また、２段方式を採る場合は、金属製外装
缶の開口端径が大きくなり易いので、結果的に、封口強
度の低下の招来、あるいは気密封止性の低下を招来し、
製造された円筒型電池の歩留まりないし信頼性が損なわ
れる恐れがある。In the case of adopting the two-stage method, the opening end diameter of the metal outer can is likely to be large, and as a result, the sealing strength is reduced or the hermetic sealing property is reduced.
The yield or reliability of the manufactured cylindrical battery may be impaired.
【０００６】本発明は、上記事情に対処してなされたも
ので、信頼性の高い円筒型電池を歩留まりよく製造でき
る円筒型電池の製造方法の提供を目的とする。The present invention has been made in view of the above circumstances, and has as its object to provide a method of manufacturing a cylindrical battery capable of manufacturing a highly reliable cylindrical battery with high yield.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、発電
要素を収納した有底円筒型の金属製外装缶の開口端内壁
面部にシールパッキングを介し、一方の電極端子を導出
した封止板を位置決め配置する工程と、前記金属製外装
缶の開口端部を導入テーパ付き絞り型に嵌合させ、開口
端を内径方向に折り曲げる工程と、前記折り曲げた金属
製外装缶の開口端部をカール型に嵌合させ、圧縮整形・
封止する工程とを有する円筒型電池の製造方法であっ
て、前記折り曲げ工程に使用する絞り型が、金属製外装
缶の外径をＤ、絞り型の嵌合内径をｄとしたとき、 0.985×Ｄ≦ｄ≦ 0.995×Ｄ を満たすことを特徴とする円筒型電池の製造方法であ
る。According to a first aspect of the present invention, there is provided a sealing method in which one electrode terminal is led out through a seal packing on an inner wall surface of an open end of a bottomed cylindrical metal outer can containing a power generating element. Positioning the plate, and fitting the open end of the metal outer can into an introduction tapered draw mold, bending the open end in the inner diameter direction, and opening the open end of the bent metal outer can. Fit to the curl type,
Sealing, wherein the drawing die used in the bending step is 0.985 when the outer diameter of the metal outer can is D and the fitting inner diameter of the drawing die is d. × D ≦ d ≦ 0.995 × D This is a method for producing a cylindrical battery.
【０００８】上記請求項１の発明は、次ぎのような知見
に基づいてなされたものである。すなわち、本発明者
は、側壁肉厚が0.20mm程度の有底円筒体を外装缶とした
場合において、開口端部を絞り加工によって、内径方向
に折り曲げ・圧縮して気密に封止する際の条件を種々検
討した。その結果、一次的に内径方向に折り曲げ、さら
に、二次的に圧縮・整形して気密に封止する２段工程に
分け、かつ折り曲げに使用する絞り型の絞り面の寸法
を、被加工体である外装缶の外径寸法に対して所定の範
囲内に設定した場合、信頼性の高い気密封止を再現性良
好に行えることを確認し、この発明に至ったものであ
る。[0008] The first aspect of the present invention has been made based on the following findings. That is, the present inventor considers that, when the bottomed cylindrical body having a side wall thickness of about 0.20 mm is used as the outer can, when the opening end is drawn and compressed in the inner diameter direction and hermetically sealed by drawing. Various conditions were examined. As a result, the process is divided into a two-stage process in which the workpiece is primarily bent in the inner diameter direction, and further compressed and shaped in a secondary manner, and hermetically sealed. It has been confirmed that when the outer diameter of the outer can is set within a predetermined range, highly reliable hermetic sealing can be performed with good reproducibility, and the present invention has been accomplished.
【０００９】請求項１の発明において、金属製外装缶
は、側壁肉厚が0.20mm程度の有底円筒型であり、一般的
に、底面側が他方の電極端子部となる構成を採ってい
る。ここで、他方の電極端子部は、一方の電極端子部に
対応して突起型に構成してもよいし、平坦面を成す構成
でもよい。According to the first aspect of the present invention, the metal outer can has a bottomed cylindrical shape with a side wall thickness of about 0.20 mm, and generally has a configuration in which the bottom side is the other electrode terminal portion. Here, the other electrode terminal portion may be configured to be a projection type corresponding to the one electrode terminal portion, or may be configured to form a flat surface.
【００１０】また、この発明に係る製造方法は、いわゆ
るカール型を使用して金属製外装缶の一端開口部を縮径
化・封止する工程を採る円筒型電池ならば、いずれの場
合にも適用できる。すなわち、円筒型ニッケルマンガン
一次電池、円筒型ニッケル水素二次電池など、電池の種
類や規格などによって制約されない。Further, the manufacturing method according to the present invention is applicable to any cylindrical battery that employs a step of reducing the diameter of one end opening of a metal outer can and sealing it using a so-called curl type. Applicable. That is, the battery is not limited by the type and standard of the battery, such as a cylindrical nickel manganese primary battery and a cylindrical nickel hydrogen secondary battery.
【００１１】請求項１の発明では、金属製外装缶の開口
端内壁面部に、シールパッキングを介して一方の電極端
子を導出した封止板を位置決め配置した状態で、前記外
装缶の開口端部を、導入テーパ付き絞り型に嵌合させ、
一次的に、開口端を内径方向に折り曲げる。このとき、
外装缶の開口端径に対して、嵌合折り曲げ径を所定の範
囲に設定した導入テーパ付き絞り型が嵌合されるため、
軸方向と交差する皺など発生することなく折り曲げ・縮
径が行われる。したがって、次段の（二次的な）カール
型に嵌合させた圧縮整形・封止もスムースに進行するだ
けでなく、外観良好で、信頼性の高い気密な封止が確実
に達成される。According to the first aspect of the present invention, with the sealing plate from which one of the electrode terminals is led through the seal packing positioned on the inner wall surface of the open end of the metal outer can, the open end of the outer can is opened. Is fitted to the draw-in type with an introduction taper,
First, the open end is bent in the radial direction. At this time,
For the opening end diameter of the outer can, the introduction tapered aperture type with the fitting bending diameter set in a predetermined range is fitted,
Bending and diameter reduction are performed without generating wrinkles crossing the axial direction. Therefore, the compression shaping / sealing fitted to the next (secondary) curl mold not only progresses smoothly, but also achieves a good appearance and highly reliable airtight sealing. .
【００１２】[0012]
【発明の実施の形態】以下、図１ (a)， (b)および図２
(a)， (b)を参照して実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (a), (b) and FIG.
An embodiment will be described with reference to (a) and (b).
【００１３】先ず、外径10mm、肉厚0.20mmの単４形アル
カリマンガン電池用の、有底円筒型外装缶を用意し、こ
の外装缶内に単４形アルカリマンガン電池用の発電要素
を収納・装着する。次いで、発電要素を収納・装着した
外装缶の開口端側の一部を縮径化した後、シールパッキ
ングを介して一方の電極端子を導出した封止板を位置決
め配置する。First, a cylindrical bottomed outer can for an AAA alkaline manganese battery having an outer diameter of 10 mm and a thickness of 0.20 mm is prepared, and a power generating element for the AAA alkaline manganese battery is housed in the outer can. ·Installing. Next, after reducing the diameter of a part of the outer end of the outer can in which the power generating element is housed and mounted, a sealing plate from which one electrode terminal is led out through a seal packing is positioned and arranged.
【００１４】図１ (a)は、一方の電極端子を導出した封
止板を位置決め配置したときの態様の要部を模式的に示
す断面図であり、１は開口端1a側の一部を縮径化1bした
外装缶、２は発電要素であり、前記外装缶１の側壁面に
接する陰極要素2a、セパレータ2bおよび陽極要素2cで構
成されている。また、３は一方の電極端子４、たとえば
発電要素２の陽極要素2cに接続する集電リード部4aを導
出した封止板、５は前記封止板３周辺部と外装缶１の開
口端1a側内壁面との間に介挿・配置されたシールパッキ
ングである。FIG. 1A is a cross-sectional view schematically showing a main part of an embodiment in which a sealing plate from which one electrode terminal is led out is positioned and arranged. Reference numeral 1 denotes a part of the opening end 1a side. The outer case 2 having a reduced diameter 1b is a power generating element, and includes a cathode element 2a, a separator 2b, and an anode element 2c which are in contact with the side wall surface of the outer can 1. Reference numeral 3 denotes a sealing plate from which one of the electrode terminals 4, for example, a current collecting lead 4a connected to the anode element 2c of the power generating element 2, is drawn. Reference numeral 5 denotes a peripheral portion of the sealing plate 3 and an opening end 1a of the outer can 1. It is a seal packing interposed and arranged between the inner side wall surface.
【００１５】ここで、封止板３は厚さ 0.8mm程度のSPCC
製薄板であり、集電リード部4aを絶縁的に導出した構成
を採ることもでき、また、封止板３および電極端子４部
は、いずれも外装缶１に対してシールパッキング５によ
って電気的な絶縁が行われている。つまり、シールパッ
キング５は、封止板３などの気密封止に寄与するととも
に、他方の電極端子を兼ねる外装缶１との間を電気的に
絶縁する。Here, the sealing plate 3 is made of SPCC having a thickness of about 0.8 mm.
The sealing plate 3 and the electrode terminal 4 can be electrically connected to the outer can 1 by the seal packing 5. Good insulation is provided. That is, the seal packing 5 contributes to hermetic sealing of the sealing plate 3 and the like, and electrically insulates the outer casing 1 from the other electrode terminal.
【００１６】上記、一方の電極端子を導出した封止板を
位置決め配置した後、図１ (b)に模式的に示すごとく、
前記外装缶１の開口端1a部を、導入テーパ6a付き絞り型
６に嵌合させ、開口端1aを内径方向に折り曲げる。ここ
で、開口端1a側が嵌合する絞り型６の内径ｄは9.85〜9.
95mm、導入テーパ6aは 2〜10°程度である。つまり、折
り曲げ工程に使用する絞り型は、外装缶１の外径をＤ、
絞り型６の嵌合内径をｄとしたとき、 0.985×Ｄ≦ｄ≦ 0.995×Ｄ を満たすように設定されている。After the sealing plate from which one of the electrode terminals has been drawn out is positioned and arranged, as schematically shown in FIG.
The open end 1a of the outer can 1 is fitted to the drawing die 6 having an introduction taper 6a, and the open end 1a is bent in the inner diameter direction. Here, the inner diameter d of the aperture die 6 to which the opening end 1a side is fitted is 9.85 to 9.
95 mm, the introduction taper 6a is about 2 to 10 °. In other words, the drawing die used in the bending step has an outer diameter of the outer can 1 of D,
When the fitting inner diameter of the drawing die 6 is d, the setting is such that 0.985 × D ≦ d ≦ 0.995 × D.
【００１７】また、前記図１ (b)において、７は絞り型
６の内径ｄを摺動可能に装着されたノックアウト機構
で、外装缶１の開口端1aを内径方向に折り曲げ加工後、
その外装缶１を絞り型６から押し出すようにしたもので
ある。なお、この絞り型６に嵌合する絞り加工（一次的
な加工）で、外径10mmの外装缶１の開口端1a部は、外径
9.85〜9.95mmに折り曲げられたが、絞り型６から外した
時点で、若干戻って外径9.87〜9.97mmとなった。In FIG. 1 (b), reference numeral 7 denotes a knock-out mechanism slidably mounted on the inner diameter d of the drawing die 6, which is formed by bending the open end 1a of the outer can 1 in the inner diameter direction.
The outer can 1 is extruded from a drawing die 6. In the drawing process (primary processing) to be fitted to the drawing die 6, the outer end 1a of the outer can 1 having an outer diameter of 10 mm has an outer diameter of 1 mm.
It was bent to 9.85 to 9.95 mm, but when it was removed from the drawing die 6, it returned slightly to an outer diameter of 9.87 to 9.97 mm.
【００１８】次に、前記一次的な加工（折り曲げ加工
を）施した外装缶１の開口端1a部に対し、図２ (a)に模
式的に示すごとく、上下方向に移動可能に装着・配置し
たカール型８を下降・嵌合させ、圧縮整形・封止を行
う。ここで、カール型８の内径Ｄ′は10mm、外装缶１の
開口端1aの折り曲げ部に係合（当接）するカールアール
Ｒが 1.1mm、カール型８の内径Ｄ′を摺動可能に装着さ
れたノックアウト機構９によって、圧縮整形・封止後に
カール型８を上昇させるとき、封止電池をカール型８か
ら押し出すようになっている。Next, as shown schematically in FIG. 2A, the outer can 1 is mounted and arranged so as to be movable in the vertical direction on the open end 1a of the outer can 1 which has been subjected to the primary processing (bending processing). The curled die 8 is lowered and fitted to perform compression shaping and sealing. Here, the inner diameter D 'of the curl mold 8 is 10 mm, the curl radius R engaging (contacting) with the bent portion of the opening end 1a of the outer can 1 is 1.1 mm, and the inner diameter D' of the curl mold 8 is slidable. When the curl mold 8 is lifted after compression shaping and sealing by the attached knockout mechanism 9, the sealed battery is pushed out of the curl mold 8.
【００１９】図２ (b)は、前記カール型８によって、外
装缶１の開口端1a部を圧縮整形・封止した円筒型電池要
部構成を示す断面図である。図２ (b)から分かるよう
に、外装缶１の一次的な折り曲げ加工で内径方向に折り
曲げられた開口端1a部は、二次的な圧縮加工によって、
高精度の整形および気密に封止された円筒型電池が容易
に得られる。たとえば、上記製造した円筒型電池は、耐
圧検査において、安全弁動作の120kgf／cm2 に対し、15
4kgf／cm2 で高品質なものであった。FIG. 2B is a cross-sectional view showing a main part of the cylindrical battery in which the opening end 1a of the outer can 1 is compressed, shaped and sealed by the curl mold 8. As shown in FIG. As can be seen from FIG. 2 (b), the opening end 1a portion bent in the inner diameter direction by the primary bending process of the outer can 1 is subjected to the secondary compression process.
A highly accurate shaped and hermetically sealed cylindrical battery is easily obtained. For example, in the pressure test, the manufactured cylindrical battery has a safety valve operation of 120 kgf / cm 2 , 15
It was of high quality at 4 kgf / cm 2 .
【００２０】上記では、単４形の円筒型アルカリマンガ
ン電池の製造例を説明したが、本発明は、この例示に限
定されるものでなく、発明の趣旨を逸脱しない範囲でい
ろいろの変形を採ることができる。たとえば単１形、単
２形、単３形の円筒型アルカリマンガン電池、あるいは
円筒型ニッケル水素電池の場合でも同様の作用・効果が
得られる。In the above, the production example of the AAA cylindrical alkaline manganese battery has been described. However, the present invention is not limited to this example, and various modifications may be made without departing from the spirit of the invention. be able to. For example, the same operation and effect can be obtained in the case of a single alkaline battery, a single alkaline battery, a single alkaline battery, or a single alkaline battery.
【００２１】[0021]
【発明の効果】請求項１の発明によれば、金属製外装缶
の開口端内壁面部に位置決め配置したシールパッキング
を介して一方の電極端子を導出した封止板が、一次的
に、固定する。このとき、外装缶の開口端径に対して、
嵌合折り曲げ径を所定の範囲に設定した導入テーパ付き
絞り型が嵌合されるため、軸方向と交差する皺など発生
することなく折り曲げ・縮径が行われる。したがって、
二次的な圧縮整形・封止もスムースに進行し、外観良好
で、信頼性の高い気密な封止が確実に達成され、信頼性
の高い円筒型電池が歩留まりよく提供できる。According to the first aspect of the present invention, the sealing plate from which one of the electrode terminals is led out via the seal packing positioned and arranged on the inner wall of the open end of the metal outer can is temporarily fixed. . At this time, with respect to the opening end diameter of the outer can,
Since the drawing die with an introduction taper whose fitting bending diameter is set within a predetermined range is fitted, bending and diameter reduction are performed without generation of wrinkles crossing the axial direction. Therefore,
The secondary compression shaping / sealing also proceeds smoothly, a reliable and airtight sealing with good appearance is reliably achieved, and a highly reliable cylindrical battery can be provided with good yield.
【図１】この発明の実施態様例を模式的に示すもので、
(a)は絞り型による一次的な加工前の状態を示す要部断
面図、 (b)は絞り型による一次的な加工の状態を示す要
部断面図。FIG. 1 schematically shows an embodiment of the present invention.
(a) is a sectional view of a main part showing a state before primary processing by a drawing die, and (b) is a sectional view of a main part showing a state of primary processing by a drawing die.
【図２】この発明の実施態様例を模式的に示すもので、
(a)はカール型による二次的な加工である圧縮整形・封
止後の状態を示す要部断面図。FIG. 2 schematically shows an embodiment of the present invention,
(a) is a principal part sectional view showing a state after compression shaping and sealing as secondary processing by a curl type.
１……金属製外装缶 1a……外装缶の開口端 1b……外装缶の縮径化部 ２……発電要素 2a……陰極要素 2b……セパレータ 2c……陽極要素 ３……封止板 ４……一方の電極端子 4a……集電リード部 ５……シールパッキング ６……絞り型 ７……絞り型のノックアウト機構 ８……カール型 ９……カール型のノックアウト機構 DESCRIPTION OF SYMBOLS 1 ... Metal outer can 1a ... Open end of outer can 1b ... Reduced diameter part of outer can 2 ... Power generating element 2a ... Cathode element 2b ... Separator 2c ... Anode element 3 ... Sealing plate 4 One electrode terminal 4a Current collecting lead part 5 Seal packing 6 Aperture type 7 Aperture type knockout mechanism 8 Curl type 9 Curl type knockout mechanism
Claims (1)
外装缶の開口端内壁面部にシールパッキングを介し、一
方の電極端子を導出した封止板を位置決め配置する工程
と、 前記金属製外装缶の開口端部を導入テーパ付き絞り型に
嵌合させ、開口端を内径方向に折り曲げる工程と、 前記折り曲げた金属製外装缶の開口端部をカール型に嵌
合させ、圧縮整形・封止する工程とを有する円筒型電池
の製造方法であって、 前記折り曲げ工程に使用する絞り型が、金属製外装缶の
外径をＤ、絞り型の嵌合内径をｄとしたとき、 0.985×Ｄ≦ｄ≦ 0.995×Ｄ を満たすことを特徴とする円筒型電池の製造方法。1. A step of positioning and positioning a sealing plate from which one electrode terminal is led out through a seal packing on an inner wall surface of an open end of a bottomed cylindrical metal outer can containing a power generating element; Fitting the open end of the outer can into an introduction tapered drawing die and bending the open end in the inner diameter direction; fitting the open end of the bent metal outer can into a curl mold; Stopping the step of stopping, wherein the drawing die used in the bending step, when the outer diameter of the metal outer can is D and the fitting inner diameter of the drawing die is d, 0.985 × A method for producing a cylindrical battery, wherein D ≦ d ≦ 0.995 × D is satisfied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9343032A JPH11176394A (en) | 1997-12-12 | 1997-12-12 | Manufacture of cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9343032A JPH11176394A (en) | 1997-12-12 | 1997-12-12 | Manufacture of cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11176394A true JPH11176394A (en) | 1999-07-02 |
Family
ID=18358418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9343032A Withdrawn JPH11176394A (en) | 1997-12-12 | 1997-12-12 | Manufacture of cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11176394A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6851165B2 (en) * | 2002-09-24 | 2005-02-08 | Siemens Vdo Automotive, Inc. | Apparatus for retaining a poppet seal |
| JP2006236604A (en) * | 2005-02-22 | 2006-09-07 | Matsushita Electric Ind Co Ltd | Cylindrical battery and its sealing method |
-
1997
- 1997-12-12 JP JP9343032A patent/JPH11176394A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6851165B2 (en) * | 2002-09-24 | 2005-02-08 | Siemens Vdo Automotive, Inc. | Apparatus for retaining a poppet seal |
| JP2006236604A (en) * | 2005-02-22 | 2006-09-07 | Matsushita Electric Ind Co Ltd | Cylindrical battery and its sealing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20050301 |