JP3425184B2 - Manufacturing method of cylindrical current collector - Google Patents
Manufacturing method of cylindrical current collectorInfo
- Publication number
- JP3425184B2 JP3425184B2 JP12663793A JP12663793A JP3425184B2 JP 3425184 B2 JP3425184 B2 JP 3425184B2 JP 12663793 A JP12663793 A JP 12663793A JP 12663793 A JP12663793 A JP 12663793A JP 3425184 B2 JP3425184 B2 JP 3425184B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical
- plate
- lath metal
- curved
- radius
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title description 14
- 229910052751 metal Inorganic materials 0.000 claims description 62
- 239000002184 metal Substances 0.000 claims description 62
- 230000000630 rising effect Effects 0.000 claims description 32
- 238000004804 winding Methods 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- SOZVEOGRIFZGRO-UHFFFAOYSA-N [Li].ClS(Cl)=O Chemical compound [Li].ClS(Cl)=O SOZVEOGRIFZGRO-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- FBDMJGHBCPNRGF-UHFFFAOYSA-M [OH-].[Li+].[O-2].[Mn+2] Chemical compound [OH-].[Li+].[O-2].[Mn+2] FBDMJGHBCPNRGF-UHFFFAOYSA-M 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Inorganic materials [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- -1 thionyl lithium chloride Chemical compound 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
- Cell Electrode Carriers And Collectors (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は板状ラスメタルを円筒形
集電体に製造する方法に関するものである。
【０００２】
【従来の技術】例えば円筒形の塩化チオニルリチウム電
池や、円筒形の二酸化マンガンリチウム電池は、内周面
に金属リチウムからなる筒形負極を圧着した有底円筒形
の外装缶内に、外周面に筒形多孔質炭素体を圧着した円
筒形集電体がセパレータを介して収納された構造を有す
る。前記円筒形集電体を保形性が高い板状ラスメタルか
ら製造する場合、まず巻芯に前記板状ラスメタルを巻き
始め部と巻き終わり部とが重なるように１周巻き付け、
更にこれを数回転がした後、捲回された板状ラスメタル
の重ね合せ部を溶接する。
【０００３】しかしながら、前述した方法において前記
板状ラスメタルを前記重ね合せ部が溶接機の直下に位置
するように前記巻芯に巻き付けても、前記板状ラスメタ
ルから形成された捲回物が転がされる回数は前記捲回物
ごとに異なるため、転がされた回数によっては前記捲回
物の重ね合せ部の位置が元の位置からずれる。従って、
溶接する前に前記捲回物の前記重ね合せ部を溶接機の直
下に移動させなければならないため、製造作業が繁雑に
なるという問題点がある。
【０００４】
【発明が解決しようとする課題】本発明は従来の問題を
解決するためになされたもので、板状ラスメタルから円
筒形集電体を簡便に製造することが可能な方法を提供し
ようとするものである。
【０００５】
【課題を解決するための手段】本発明は、両端付近が湾
曲され、それら湾曲部のアールの半径をそれぞれｒ1，
ｒ2 とした時、ｒ1 ＜ｒ2 を満たす板状ラスメタルを用
い、前記板状ラスメタルを上部に半円柱形溝を有する成
形型上に前記ラスメタルの湾曲部の辺が前記溝の長さ方
向と平行になるように載置する工程と、横置きにした円
柱形溶接用電極を前記板状ラスメタルを介して前記成形
型の半円柱形溝内に押し込むことにより前記板状ラスメ
タルを底部が半円筒形に湾曲されると共に、前記湾曲部
を含む両側が立上がった形状に成形する工程と、先端面
がその幅方向に沿って扇柱状に切除された角柱形の第１
カール金型を用い、前記成形されたラスメタルのアール
の半径がｒ1 である湾曲部を有する一方の立上がり部を
前記第１カール金型の先端面で押圧して前記立上がり部
を前記電極の曲面に沿って屈曲させて巻き付ける工程
と、先端面がその幅方向に沿って扇柱状に切除された角
柱形の第２カール金型を用い、前記成形されたラスメタ
ルのアールの半径がｒ2 である湾曲部を有する他方の立
上がり部を前記第２カール金型の先端面で押圧して前記
立上がり部を前記電極の曲面に沿って屈曲させて巻き付
けると共に、巻き付け先端側の辺（以下、巻き終り部と
称す）を前記第１カール金型で屈曲された前記一方の立
上がり部の巻き付け先端部の辺（以下、巻き始め部と称
す）に重ねる工程と、前記電極に巻かれた板状ラスメタ
ルの重ね合せ部を溶接する工程とを具備したことを特徴
とする円筒形集電体の製造方法である。
【０００６】本発明の製造方法により製造された円筒形
集電体を組み込んだ塩化チオニルリチウム電池について
図１を参照して説明する。負極端子を兼ねる有底円筒形
の外装缶１の内周面には、金属リチウムからなる円筒形
の負極２が圧着されている。円筒形アセチレンブラック
３が圧着された前記円筒形集電体４は、円筒形セパレー
タ５及び有底円筒形絶縁紙６を介して前記外装缶１内に
収納されている。中央に円形穴が開口された絶縁紙７
は、前記円筒形セパレータ５に支持されている。前記外
装缶１の上部開口部には中央に円形穴が開口されたメタ
ルトップ８が気密に取り付けられている。円筒形正極端
子９は、前記絶縁紙７の前記円形穴及び前記メタルトッ
プ８の前記円形穴の上下に突出した状態で前記メタルト
ップ８に絶縁材１０を介して気密に取り付けられてい
る。前記円筒形正極端子９の下端に取り付けられた正極
リード１１は、前記円筒形集電体４の上端に取り付けら
れている。中央に円形切欠部を有する封口材１２は、前
記メタルトップ８に嵌合されている。電解液は前記円筒
形正極端子９から注入されて前記外装缶１内に収納され
ている。前記外装缶１の外周及び底部周縁、前記メタル
トップ８の周縁、前記封口材１２の周縁は、外装被覆チ
ューブ１３により被覆されている。
【０００７】
【作用】本発明によれば、両端付近が湾曲され、それら
湾曲部のアールの半径をそれぞれｒ1 ，ｒ2 とした時、
ｒ1 ＜ｒ2 を満たす板状ラスメタルを用い、前記板状ラ
スメタルを上部に半円柱形溝を有する成形型上に前記ラ
スメタルの湾曲部の辺が前記溝の長さ方向と平行になる
ように載置し、横置きにした円柱形溶接用電極を前記板
状ラスメタルを介して前記成形型の半円柱形溝内に押し
込むことにより前記板状ラスメタルを底部が半円筒形に
湾曲されると共に、前記湾曲部を含む両側が立上がった
形状に成形する。このような状態で先端面がその幅方向
に沿って扇柱状に切除された角柱形の第１カール金型を
用い、前記成形されたラスメタルの一方の立上がり部を
前記第１カール金型の先端面で押圧すると、この立上が
り部はアールの半径が小さい（ｒ1 ）湾曲部を有するた
め、前記電極の曲面に沿って屈曲させて巻き付けること
ができる。ひきつづき、先端面がその幅方向に沿って扇
柱状に切除された角柱形の第２カール金型を用い、前記
他方の立上がり部を前記第２カール金型の先端面で押圧
すると、前記成形されたラスメタルの他方の立上がり部
はアールの半径が大きい（ｒ2 ）湾曲部を有するため、
前記電極の曲面に沿って屈曲させて巻き付けることがで
きると共に、巻き終わり部を巻き始め部に重ねることが
できる。その結果、前記板状ラスメタルから形成された
捲回物の重ね合せ部の位置を常に溶接機の直下に固定す
ることができるため、捲回する工程から溶接する工程ま
でを連続して行うことができる。従って、板状ラスメタ
ルを円筒形集電体に製造する作業を著しく簡便化するこ
とができる。
【０００８】
【実施例】本発明の実施例を前述した図１及び図２〜図
７を参照して詳細に説明する。まず、図２に示すように
両端付近が湾曲され、それら湾曲部２０ａ，２０ｂのア
ールの半径がそれぞれｒ1 （例えば２ｍｍ），ｒ2 （例
えば５ｍｍ）である板状ラスメタル２１を用意した。
【０００９】次いで、図３に示すように前記板状ラスメ
タル２１を上部に半円柱形溝２２を有する成形型２３上
に前記板状ラスメタル２１の湾曲部２０ａ，２０ｂの辺
が前記溝２２の長さ方向と平行になるように載置する。
つづいて、横置きにした円柱形溶接用電極２４を前記板
状ラスメタル２１を介して前記半円柱形溝２２内に押し
込むと、図４に示すように前記板状ラスメタル２１は底
部が半円筒形に湾曲されると共に、前記湾曲部２０ａ，
２０ｂを含む両側が立上がった形状に成形される。
【００１０】次いで、先端面２５がその幅方向に沿って
扇柱状に切除された角柱形の第１カール金型２６を前記
成形されたラスメタル２７の立上がり部２８ａの左側に
配置する。なお、前記立上がり部２８ａには、アールの
半径がｒ1 である湾曲部２０ａが設けられている。前記
第１カール金型２６を前記電極２４側へ移動させて前記
第１カール金型２６の先端面２５で前記立上がり部２８
ａを押圧し、図５に示すように前記立上がり部２８ａを
前記電極２４の曲面に沿って屈曲させて巻き付ける。
【００１１】次いで、アールの半径がｒ2 である湾曲部
２０ｂを有する立上がり部２８ｂの右側に、先端面２９
がその幅方向に沿って扇柱状に切除された角柱形の第２
カール金型３０を配置する。つづいて、前記第２カール
金型３０の先端面２９で前記立上がり部２８ｂを押圧し
て、前記立上がり部２８ｂを前記電極２４の曲面に沿っ
て屈曲させて巻き付けると共に、巻き終わり部を巻き始
め部に重ねる。この重ね合せを行う直前に前記第１カー
ル金型２６を前記板状ラスメタル２１の捲回物３１から
取り外す。
【００１２】前記ラスメタル２７の立上がり部２８ａ，
２８ｂを前記電極２４に巻き付ける工程において、前記
ラスメタル２７の前記立上がり部２８ａ，２８ｂの上端
はいずれも前記第１カール金型２６及び前記第２カール
金型３０で押圧して前記電極２４の曲面に沿って屈曲さ
せることができないため、予め前記湾曲部２０ａ，２０
ｂが設ける必要がある。前記立上がり部２８ａ，２８ｂ
のうちアールの半径が小さい前記湾曲部２０ａを有する
前記立上がり部２８ａを先に前記電極２４に巻き付ける
と、前記アールの半径が大きい場合に比べて前記電極２
４の曲面全体に密着させて巻き付けることができる。つ
づいて、前記立上がり部２８ｂを前記電極２４に巻き付
ける。前記立上がり部２８ｂの前記湾曲部２０ｂのアー
ルの半径は大きいため、前記立上がり部２８ｂを前記電
極２４の曲面全体に密着させて巻き付けることができる
と共に、前記巻き終わり部を前記巻き始め部に重ねるこ
とができる。これに対し、前記立上がり部２８ｂの前記
湾曲部２０ｂのアールの半径が小さいと、板状ラスメタ
ルの側辺は髭状の金属繊維が多数突き出しているため、
前記巻き始め部に前記巻き終わり部が突き刺さり前記板
状ラスメタルはハート形に成形される。
【００１３】次いで、図６に示すように前記第２カール
金型３０で前記板状ラスメタル２１から形成された捲回
物３１の重ね合せ部を押さえながら、前記重ね合せ部上
方に配置された抵抗溶接機３２により前記捲回物３１の
重ね合せ部を溶接する。この後、前記第２カール金型３
０及び前記成形型２３から図７に示す円筒形ラスメタル
３３を取り外す。
【００１４】次いで、金属リチウムからなる円筒形の負
極が圧着された有底円筒形外装缶内に、外周に円筒形ア
セチレンブラックが圧着された前記円筒形ラスメタルを
セパレータを介して収納した後、正極活物質を兼ねる電
解液を収容し、前述した図１に示す構造の円筒形塩化チ
オニルリチウム電池を組み立てた。
【００１５】このような製造方法によれば、前記板状ラ
スメタル２１を前記電極２４に巻き付けることにより形
成された捲回物３１の重ね合せ部の位置を常に前記溶接
機３２の直下に固定することができるため、前記板状ラ
スメタル２１の巻き付け工程後、前記捲回物３１の重ね
合せ部を溶接する工程を連続して行うことができる。従
って、前記板状ラスメタル２１から円筒形集電体を極め
て簡便に製造することができる。
【００１６】
【発明の効果】以上詳述したように本発明によれば、板
状ラスメタルから円筒形集電体を簡便に製造することが
可能な方法を提供することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a plate-shaped lath metal into a cylindrical current collector. 2. Description of the Related Art For example, a cylindrical lithium thionyl chloride battery and a cylindrical lithium manganese dioxide battery are provided in a bottomed cylindrical outer can in which a cylindrical negative electrode made of metallic lithium is crimped on the inner peripheral surface. In addition, a cylindrical current collector having a cylindrical porous carbon body crimped on the outer peripheral surface is housed via a separator. When the cylindrical current collector is manufactured from a plate-shaped lath metal having high shape retention, first, the plate-shaped lath metal is wound around the winding core one round so that a winding start portion and a winding end portion overlap with each other,
After several turns, the overlapped portion of the wound plate-shaped lath metal is welded. [0003] However, even when the plate-shaped lath metal is wound around the core in such a manner that the overlapped portion is located immediately below the welding machine in the above-described method, the roll formed from the plate-shaped lath metal is rolled. Since the number of times of winding differs for each wound product, the position of the overlapping portion of the wound product is shifted from the original position depending on the number of times of rolling. Therefore,
Before the welding, the overlapping portion of the wound product must be moved to a position directly below the welding machine, so that there is a problem that the manufacturing operation is complicated. SUMMARY OF THE INVENTION [0004] The present invention has been made to solve the conventional problems, and will provide a method capable of easily manufacturing a cylindrical current collector from a lath metal plate. It is assumed that. SUMMARY OF THE INVENTION According to the present invention, both ends are curved near each other, and the radius of the radius of the curved portions is set to r 1 and r 1 , respectively.
When r 2 is used, a plate-shaped lath metal satisfying r 1 <r 2 is used, and the side of the curved portion of the lath metal is placed in a longitudinal direction of the groove on a forming die having a semi-cylindrical groove on the plate-shaped lath metal. And placing the horizontally disposed cylindrical welding electrode into the semi-cylindrical groove of the molding die via the plate-shaped lath metal to thereby lower the plate-shaped lath metal to a half. A step of forming into a cylindrical shape with both sides including the curved portion rising, and a first prism-shaped first end face cut in a fan shape along the width direction thereof.
Using a curl mold, one of the rising portions having a curved portion in which the radius of the formed lath metal is r 1 is pressed by the tip end surface of the first curl mold to make the rising portion a curved surface of the electrode. Using a second curl mold in the form of a prism having a front end surface cut in a fan shape along the width direction thereof, and the radius of the radius of the formed lath metal is r 2 . The other rising portion having the curved portion is pressed by the tip end surface of the second curl mold to bend and wind the rising portion along the curved surface of the electrode, and a side on the winding tip side (hereinafter, winding end portion). (Hereinafter referred to as a winding start portion) of the one rising portion bent by the first curl mold (hereinafter referred to as a winding start portion), and a lamination of a plate-shaped lath metal wound on the electrode. Weld joint And a method for producing a cylindrical current collector. A lithium thionyl chloride battery incorporating a cylindrical current collector manufactured by the manufacturing method of the present invention will be described with reference to FIG. A cylindrical negative electrode 2 made of metallic lithium is pressure-bonded to the inner peripheral surface of a bottomed cylindrical outer can 1 also serving as a negative electrode terminal. The cylindrical current collector 4 to which the cylindrical acetylene black 3 is pressed is housed in the outer can 1 via a cylindrical separator 5 and a bottomed cylindrical insulating paper 6. Insulating paper 7 with a circular hole in the center
Are supported by the cylindrical separator 5. A metal top 8 having a circular hole opened in the center is hermetically attached to the upper opening of the outer can 1. The cylindrical positive electrode terminal 9 is hermetically attached to the metal top 8 via an insulating material 10 so as to protrude above and below the circular hole of the insulating paper 7 and the circular hole of the metal top 8. The positive electrode lead 11 attached to the lower end of the cylindrical positive electrode terminal 9 is attached to the upper end of the cylindrical current collector 4. A sealing material 12 having a circular notch at the center is fitted to the metal top 8. The electrolyte is injected from the cylindrical positive electrode terminal 9 and stored in the outer can 1. The outer periphery and bottom periphery of the outer can 1, the periphery of the metal top 8, and the periphery of the sealing material 12 are covered with an outer covering tube 13. According to the present invention, when both ends are curved and the radius of the radius of the curved portions is r 1 and r 2 respectively,
Using a plate-like lath metal satisfying r 1 <r 2 , the plate-like lath metal is placed on a forming die having a semi-cylindrical groove so that the side of the curved portion of the lath metal is parallel to the length direction of the groove. The plate-like lath metal is placed into a semi-cylindrical shape by pushing the cylindrical welding electrode placed and placed horizontally through the plate-like lath metal into the semi-cylindrical groove of the molding die, It is formed into a shape in which both sides including the curved portion are raised. In such a state, a first columnar curl mold whose tip end face is cut in a fan shape along the width direction is used, and one rising portion of the formed lath metal is connected to the tip of the first curl mold. When pressed by a surface, the rising portion has a curved portion with a small radius (r 1 ), so that the rising portion can be bent and wound along the curved surface of the electrode. Subsequently, using a prismatic second curl mold whose tip end face is cut off in a fan shape along the width direction, and pressing the other rising portion with the tip end face of the second curl mold, the molded product is formed. Since the other rising part of the lath metal has a curved part with a large radius (r 2 ),
The electrode can be wound while being bent along the curved surface of the electrode, and the winding end portion can be overlapped with the winding start portion. As a result, since the position of the overlapped portion of the wound material formed from the plate-shaped lath metal can be always fixed immediately below the welding machine, the steps from the winding step to the welding step can be continuously performed. it can. Therefore, the operation of manufacturing the plate-shaped lath metal into the cylindrical current collector can be remarkably simplified. An embodiment of the present invention will be described in detail with reference to FIG. 1 and FIGS. First, as shown in FIG. 2, a plate-like lath metal 21 was prepared in which the vicinity of both ends was curved, and the radius of the radius of the curved portions 20a and 20b was r 1 (for example, 2 mm) and r 2 (for example, 5 mm). Next, as shown in FIG. 3, the sides of the curved portions 20a and 20b of the plate-shaped lath metal 21 are the same as the length of the groove 22 on a forming die 23 having a semi-cylindrical groove 22 on the plate-shaped lath metal 21. Place so that it is parallel to the vertical direction.
Subsequently, when the horizontally placed cylindrical welding electrode 24 is pushed into the semi-cylindrical groove 22 through the plate-like lath metal 21, the plate-like lath metal 21 has a semi-cylindrical bottom as shown in FIG. And the bending portions 20a,
Both sides including 20b are formed in a raised shape. Next, the first curl mold 26 having a prismatic shape whose tip end face 25 is cut off in a fan shape along the width direction is disposed on the left side of the rising portion 28a of the molded lath metal 27. Incidentally, the rising portion 28a is bent portion 20a is provided rounded radius is r 1. The first curl mold 26 is moved to the electrode 24 side, and the rising portion 28 is formed on the tip end surface 25 of the first curl mold 26.
Then, the rising portion 28a is bent and wound along the curved surface of the electrode 24 as shown in FIG. Next, on the right side of a rising portion 28b having a curved portion 20b having a radius of r 2 , a tip surface 29 is provided.
Is a prismatic second cut along the width direction of the fan.
The curl mold 30 is arranged. Subsequently, the rising portion 28b is pressed by the tip end surface 29 of the second curl mold 30 to bend and wind the rising portion 28b along the curved surface of the electrode 24, and the winding end portion is wound at the winding start portion. Layer on. Immediately before the superposition, the first curl mold 26 is removed from the rolled material 31 of the lath metal 21. The rising portions 28a of the lath metal 27,
In the step of winding 28 b around the electrode 24, the upper ends of the rising portions 28 a and 28 b of the lath metal 27 are both pressed by the first curl mold 26 and the second curl mold 30 to form a curved surface of the electrode 24. Cannot be bent along the curved portions 20a, 20
b needs to be provided. The rising portions 28a, 28b
When the rising portion 28a having the curved portion 20a having a small radius is wound around the electrode 24 first, the electrode 2 has a larger radius than the case where the radius of the radius is large.
4 can be wound in close contact with the entire curved surface. Subsequently, the rising portion 28b is wound around the electrode 24. Since the radius of the curved portion 20b of the rising portion 28b is large, the rising portion 28b can be wound in close contact with the entire curved surface of the electrode 24, and the winding end portion is overlapped with the winding start portion. Can be. On the other hand, if the radius of the radius of the curved portion 20b of the rising portion 28b is small, a large number of whisker-shaped metal fibers protrude from the side of the plate-shaped lath metal.
The winding end portion is pierced by the winding end portion, and the plate-shaped lath metal is formed in a heart shape. Next, as shown in FIG. 6, while the overlapping portion of the wound material 31 formed of the plate-shaped lath metal 21 is pressed by the second curl mold 30, a resistor arranged above the overlapping portion is formed. The overlap portion of the wound material 31 is welded by a welding machine 32. Thereafter, the second curl mold 3
The cylindrical lath metal 33 shown in FIG. Then, the cylindrical lath metal having cylindrical acetylene black pressed on its outer periphery is housed in a bottomed cylindrical outer can to which a cylindrical negative electrode made of metallic lithium is pressed, via a separator. A cylindrical thionyl lithium chloride battery having the above-described structure shown in FIG. 1 and containing the electrolyte solution also serving as an active material was assembled. According to such a manufacturing method, the position of the overlapped portion of the wound material 31 formed by winding the plate-shaped lath metal 21 around the electrode 24 is always fixed immediately below the welding machine 32. Therefore, after the step of winding the plate-shaped lath metal 21, the step of welding the overlapped portion of the wound material 31 can be continuously performed. Therefore, a cylindrical current collector can be manufactured from the plate-shaped lath metal 21 extremely easily. As described above in detail, according to the present invention, it is possible to provide a method capable of easily manufacturing a cylindrical current collector from a lath metal plate.
【図面の簡単な説明】
【図１】本発明の方法により製造された円筒形集電体を
備えた塩化チオニルリチウム電池を示す断面図。
【図２】本発明の製造方法において用いられる板状ラス
メタルを示す断面図。
【図３】本発明の製造方法を示す斜視図。
【図４】本発明の製造方法を示す斜視図。
【図５】本発明の製造方法を示す斜視図。
【図６】本発明の製造方法を示す斜視図。
【図７】本発明の方法により製造された円筒形ラスメタ
ルを示す斜視図。
【符号の説明】
２０ａ，ｂ…湾曲部、２１…板状ラスメタル、２２…半
円柱形溝、２３…成形型、２４…円柱形溶接用電極、２
５…先端面、２６…第１カール金型、２７…成形された
ラスメタル、２８ａ，ｂ…立上がり部、２９…先端面、
３０…第２カール金型、３３…円筒形ラスメタル。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a lithium thionyl chloride battery provided with a cylindrical current collector manufactured by the method of the present invention. FIG. 2 is a sectional view showing a plate-shaped lath metal used in the manufacturing method of the present invention. FIG. 3 is a perspective view showing a manufacturing method of the present invention. FIG. 4 is a perspective view showing a manufacturing method of the present invention. FIG. 5 is a perspective view showing a manufacturing method of the present invention. FIG. 6 is a perspective view showing a manufacturing method of the present invention. FIG. 7 is a perspective view showing a cylindrical lath metal manufactured by the method of the present invention. [Description of Signs] 20a, b: curved portion, 21: plate-shaped lath metal, 22: semi-cylindrical groove, 23: molding die, 24: cylindrical welding electrode, 2
5: Tip surface, 26: First curl mold, 27: Molded lath metal, 28a, b: Rising portion, 29: Tip surface,
30: second curl mold; 33: cylindrical lath metal.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭47−16365（ＪＰ，Ａ) 実開 昭53−32846（ＪＰ，Ｕ) 特公 平３−1786（ＪＰ，Ｂ２) 実公 昭52−6666（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 4/64 - 4/84 B21C 37/08 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-47-16365 (JP, A) JP-A 53-32846 (JP, U) JP-B 3-1786 (JP, B2) JP-B Sho 52- 6666 (JP, Y1) (58) Field surveyed (Int. Cl. 7 , DB name) H01M 4/64-4/84 B21C 37/08
Claims (1)
ールの半径をそれぞれｒ1 ，ｒ2 とした時、ｒ1 ＜ｒ2
を満たす板状ラスメタルを用い、前記板状ラスメタルを
上部に半円柱形溝を有する成形型上に前記ラスメタルの
湾曲部の辺が前記溝の長さ方向と平行になるように載置
する工程と、 横置きにした円柱形溶接用電極を前記板状ラスメタルを
介して前記成形型の半円柱形溝内に押し込むことにより
前記板状ラスメタルを底部が半円筒形に湾曲されると共
に、前記湾曲部を含む両側が立上がった形状に成形する
工程と、 先端面がその幅方向に沿って扇柱状に切除された角柱形
の第１カール金型を用い、前記成形されたラスメタルの
アールの半径がｒ1 である湾曲部を有する一方の立上が
り部を前記第１カール金型の先端面で押圧して前記立上
がり部を前記電極の曲面に沿って屈曲させて巻き付ける
工程と、 先端面がその幅方向に沿って扇柱状に切除された角柱形
の第２カール金型を用い、前記成形されたラスメタルの
アールの半径がｒ2 である湾曲部を有する他方の立上が
り部を前記第２カール金型の先端面で押圧して前記立上
がり部を前記電極の曲面に沿って屈曲させて巻き付ける
と共に、巻き付け先端側の辺を前記第１カール金型で屈
曲された前記一方の立上がり部の巻き付け先端部の辺に
重ねる工程と、 前記電極に巻かれた板状ラスメタルの重ね合せ部を溶接
する工程とを具備したことを特徴とする円筒形集電体の
製造方法。(57) [Claims 1] When both ends are curved and the radius of the radius of these curved portions is r 1 and r 2 , respectively, r 1 <r 2
Using a plate-shaped lath metal that satisfies the following conditions, and placing the plate-shaped lath metal on a mold having a semi-cylindrical groove at the top such that the side of the curved portion of the lath metal is parallel to the length direction of the groove. The plate-shaped lath metal is pressed into the semi-cylindrical groove of the molding die via the plate-shaped lath metal by pressing the horizontally placed cylindrical welding electrode through the plate-shaped lath metal, so that the bottom portion is bent into a semi-cylindrical shape, and And a step of molding into a shape in which both sides are upright, using a first curl mold in the form of a prism whose tip end face is cut off in a fan shape along its width direction, wherein the radius of the radius of the molded lath metal is a step of winding by one of the rising portion having a curved portion is r 1 the rising portion is pressed is bent along the curved surface of the electrode at the distal end surface of the first curl die, the width direction of the distal end surface Cut along the fan With prismatic second curl die that is, the radius of the rounded of metal laths of the molded presses the tip surface of the second curl mold the other rising portion having a curved portion is r 2 A step of bending the rising portion along the curved surface of the electrode and winding the same, and overlapping a side of the leading end of the winding with a side of the leading end of the one rising portion bent by the first curl mold; Welding the overlapped portion of the plate-shaped lath metal wound on the cylindrical current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12663793A JP3425184B2 (en) | 1993-05-28 | 1993-05-28 | Manufacturing method of cylindrical current collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12663793A JP3425184B2 (en) | 1993-05-28 | 1993-05-28 | Manufacturing method of cylindrical current collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06338326A JPH06338326A (en) | 1994-12-06 |
| JP3425184B2 true JP3425184B2 (en) | 2003-07-07 |
Family
ID=14940130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12663793A Expired - Fee Related JP3425184B2 (en) | 1993-05-28 | 1993-05-28 | Manufacturing method of cylindrical current collector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3425184B2 (en) |
-
1993
- 1993-05-28 JP JP12663793A patent/JP3425184B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06338326A (en) | 1994-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8007549B2 (en) | Electric coupling of a connection to an electrochemical bundle | |
| US6190794B1 (en) | Prismatic storage battery or cell with coiled winding | |
| JPH0437549B2 (en) | ||
| JP2000040502A (en) | Electrochemical cell and manufacture of electrochemical cell | |
| US4476624A (en) | Method for making spirally wound cells | |
| JP2000003722A (en) | Battery and its manufacture | |
| JPH10162861A (en) | Electrode structure of lithium ion battery and method of manufacturing the same | |
| JP3324372B2 (en) | Cylindrical battery | |
| CN220138637U (en) | Full-lug folding pole piece, battery cell and cylindrical battery | |
| JP3425184B2 (en) | Manufacturing method of cylindrical current collector | |
| JPH0312410B2 (en) | ||
| JPH11162516A (en) | Lithium ion battery and its manufacture | |
| JP2002208380A (en) | Battery and manufacturing method thereof | |
| JP2001043844A (en) | Long electrode plates for cylindrical storage batteries | |
| CN214588966U (en) | Square winding button type lithium battery | |
| JP4977932B2 (en) | Lithium ion secondary battery and manufacturing method thereof | |
| CN116073086A (en) | Li-ion batteries, welding aids and battery production systems | |
| JP2979206B2 (en) | Manufacturing method of storage battery | |
| JPH03222257A (en) | Manufacture of lithium electrode for lithium battery | |
| CN116565294B (en) | Manufacturing method of multipolar lug cylindrical lithium ion battery cell and battery | |
| JP3402628B2 (en) | Organic electrolyte battery | |
| CN219759622U (en) | Battery current collecting structure, battery and rubbing device | |
| JP3558328B2 (en) | Non-aqueous electrolyte secondary battery and method of manufacturing the same | |
| JPH06215755A (en) | Thin battery and manufacturing method thereof | |
| JPS6119053A (en) | Cylindrical battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090502 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090502 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100502 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100502 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110502 Year of fee payment: 8 |
|
| LAPS | Cancellation because of no payment of annual fees |