JP2001185118A - Cylindrical cell and method of manufacturing the same - Google Patents
Cylindrical cell and method of manufacturing the sameInfo
- Publication number
- JP2001185118A JP2001185118A JP37426199A JP37426199A JP2001185118A JP 2001185118 A JP2001185118 A JP 2001185118A JP 37426199 A JP37426199 A JP 37426199A JP 37426199 A JP37426199 A JP 37426199A JP 2001185118 A JP2001185118 A JP 2001185118A
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- battery case
- electrode
- terminal plate
- lead wire
- 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.)
- Granted
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
- Primary Cells (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、非水電解液リチウ
ムイオン電池等に使用して好適な円筒形電池およびその
製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical battery suitable for use in a non-aqueous electrolyte lithium ion battery and the like, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】一般に、この種の円筒形電池には、正負
両極板間にセパレータが介在する積層体を巻回してなる
電極渦巻体を備えたものが知られており、その代表的な
ものとしてニッケル−カドミウム蓄電池，ニッケル−水
素蓄電池等のアルカリ蓄電池あるいは一次・二次リチウ
ム電池がある。2. Description of the Related Art In general, a cylindrical battery of this type is known which has an electrode spiral body formed by winding a laminate having a separator interposed between positive and negative electrode plates. There are alkaline storage batteries such as nickel-cadmium storage batteries and nickel-hydrogen storage batteries, and primary and secondary lithium batteries.
【０００３】従来、この種の円筒形電池としては、特開
平１０−１２５３３５号公報に開示され、図５に示すよ
うなものが採用されている。この円筒形電池につき、同
図を用いて説明すると、同図において、符号５１で示す
円筒形電池は、電池ケース５２，電極渦巻体５３，リー
ド片５４，絶縁体５５および端子板５６を備えている。Conventionally, as this kind of cylindrical battery, one disclosed in Japanese Patent Application Laid-Open No. 10-125335 and shown in FIG. 5 has been adopted. The cylindrical battery will be described with reference to the same figure. In the figure, the cylindrical battery denoted by reference numeral 51 includes a battery case 52, an electrode spiral body 53, a lead piece 54, an insulator 55, and a terminal plate 56. I have.
【０００４】電池ケース５２は、一方に開口し、この開
口内周面に円周方向に沿う環状の内フランジ５２ａを有
する金属製の有底円筒体によって形成されている。電池
ケース５２には、電極渦巻体５３を浸漬する電解液（図
示せず）が内封されている。電極渦巻体５３は、正極板
５３ａと負極板５３ｂとの間にセパレータ５３ｃが介在
する積層体を渦巻状に巻回してなり、電池ケース５２内
に収納されている。リード片５４は、正極板５３ａおよ
び端子板５６に接続されている。The battery case 52 is formed of a metal bottomed cylinder having an opening on one side and an annular inner flange 52a along the circumferential direction on the inner peripheral surface of the opening. An electrolyte (not shown) for immersing the electrode spiral body 53 is enclosed in the battery case 52. The electrode spiral body 53 is formed by spirally winding a laminate in which a separator 53c is interposed between a positive electrode plate 53a and a negative electrode plate 53b, and is housed in a battery case 52. The lead piece 54 is connected to the positive electrode plate 53a and the terminal plate 56.
【０００５】絶縁体５５は、第一絶縁板５７および第二
絶縁板５８を有している。第一絶縁板５７は、内フラン
ジ５２ａと電極渦巻体５３との間に配設されており、全
体が軸線両方向に開口するリング板によって形成されて
いる。第一絶縁板５７の渦巻体側外周面には円周方向に
沿う環状のフランジ５７ａが一体に設けられており、端
子板側内周面には円周方向に等間隔をもって突出する二
つの係止部５７ｂ，５７ｃが一体に設けられている。[0005] The insulator 55 has a first insulating plate 57 and a second insulating plate 58. The first insulating plate 57 is disposed between the inner flange 52a and the electrode spiral body 53, and is entirely formed by a ring plate that opens in both axial directions. An annular flange 57a along the circumferential direction is integrally provided on the outer peripheral surface of the spiral body of the first insulating plate 57, and two locking protrusions projecting at equal intervals in the circumferential direction are formed on the inner peripheral surface of the terminal plate side. Parts 57b and 57c are provided integrally.
【０００６】第二絶縁板５８は、第一絶縁板５７内に収
納され、かつ電極渦巻体５３上に配置され、全体が網状
の円形板によって形成されている。第二絶縁板５８の外
径は、第一絶縁板５７の内径より小さい寸法に設定され
ている。The second insulating plate 58 is housed in the first insulating plate 57 and is disposed on the electrode spiral body 53, and is formed entirely of a net-shaped circular plate. The outer diameter of the second insulating plate 58 is set smaller than the inner diameter of the first insulating plate 57.
【０００７】端子板５６は、内フランジ５２ａ上に載置
して電池ケース５２の開口部内にかしめ固定されてい
る。なお、同図中、符号５９は電池ケース５２の内周面
と端子板５６との間に介在するガスケットである。The terminal plate 56 is mounted on the inner flange 52a and caulked and fixed in the opening of the battery case 52. In the figure, reference numeral 59 denotes a gasket interposed between the inner peripheral surface of the battery case 52 and the terminal plate 56.
【０００８】[0008]
【発明が解決しようとする課題】しかし、従来の円筒形
電池においては、両絶縁板５７，５８のうち第一絶縁板
５７がリング板によって形成されているため、第一絶縁
板５７がリード片５４の撓み部分を押える部材として機
能せず、電池ケース５２の開口部に端子板５６を取り付
ける場合にリード片５４における撓み部分の復帰力が内
フランジ５２ａ上の端子板５６に内フランジ５２ａから
離間する方向に作用していた。However, in the conventional cylindrical battery, since the first insulating plate 57 of the two insulating plates 57, 58 is formed by a ring plate, the first insulating plate 57 is formed of a lead piece. When the terminal plate 56 is attached to the opening of the battery case 52 and does not function as a member for holding the bent portion of the battery case 52, the return force of the bent portion of the lead piece 54 is separated from the inner flange 52a by the terminal plate 56 on the inner flange 52a. It was acting in the direction you want.
【０００９】この結果、電池ケース５２への端子板５６
の取付時に内フランジ５２ａ上に端子板５６をリード片
５４における撓み部分の復帰力に抗して押し付ける作用
力を必要とし、その取付作業を煩雑にするばかりか、生
産性が低下するという問題があった。As a result, the terminal plate 56 to the battery case 52
Requires a force to press the terminal plate 56 on the inner flange 52a against the return force of the bent portion of the lead piece 54 at the time of mounting, which not only complicates the mounting work but also lowers productivity. there were.
【００１０】また、この種の円筒形電池においては、第
二絶縁板５８が第一絶縁板５７内に単に配設されている
に過ぎず、このため電池ケース５２の振動時に第二絶縁
体５８の移動によってリード片５４に電極渦巻体５３か
ら離間する方向の引張力が作用し、リード片５４の接続
部分が劣化したり、断線したりするという問題もあっ
た。Further, in this type of cylindrical battery, the second insulating plate 58 is merely disposed within the first insulating plate 57, and therefore, when the battery case 52 vibrates, the second insulating plate 58 is not provided. As a result, a tensile force acts on the lead piece 54 in a direction away from the electrode spiral body 53, and there is a problem that the connection portion of the lead piece 54 is deteriorated or disconnected.
【００１１】本発明はこのような事情にかんがみてなさ
れたもので、端子板の取付作業を簡単に行うことができ
るとともに、生産性を高めることができ、かつリード線
における接続部分の劣化・断線の発生を防止することが
できる円筒形電池およびその製造方法の提供を目的とす
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to easily carry out a work of attaching a terminal plate, to enhance productivity, and to deteriorate and break a connection portion of a lead wire. It is an object of the present invention to provide a cylindrical battery capable of preventing the occurrence of a battery and a method of manufacturing the same.
【００１２】[0012]
【課題を解決するための手段】前記目的を達成するため
に、本発明の請求項１記載の円筒形電池は、一方に開口
する有底円筒形状の電池ケースと、この電池ケース内に
収納され正負両極板間にセパレータが介在する積層体を
巻回してなる電極渦巻体と、この電極渦巻体の正負両極
板のうちいずれか一方の極板にリード線を介して接続さ
れ電池ケースの開口部を閉塞する端子板と、この端子板
と電極渦巻体との間に配設されリード線が挿通する絶縁
体とを備え、この絶縁体は、電極渦巻体を電池ケースの
底面に圧接する第一絶縁体と、この第一絶縁体を挿通す
るリード線の撓み部分を電極渦巻体側に押える第二絶縁
体とが一体化してなる構成としてある。したがって、第
一絶縁体を挿通するリード線における撓み部分の復帰力
を第二絶縁体が受ける。In order to achieve the above object, a cylindrical battery according to a first aspect of the present invention has a cylindrical battery case having a bottom and an opening on one side, and is housed in the battery case. An electrode spiral body formed by winding a laminate in which a separator is interposed between the positive and negative electrode plates; and an opening of the battery case connected to one of the positive and negative electrode plates of the electrode spiral body via a lead wire. A terminal plate that closes the electrode plate, and an insulator disposed between the terminal plate and the electrode spiral member and through which a lead wire is inserted. The insulator is configured to press the electrode spiral member against the bottom surface of the battery case. The insulator is integrated with a second insulator that presses a bent portion of a lead wire passing through the first insulator toward the electrode spiral body. Therefore, the second insulator receives the restoring force of the bent portion of the lead wire passing through the first insulator.
【００１３】請求項２記載の発明は、請求項１記載の円
筒形電池において、電池ケースの開口内周面に端子板を
載置する内フランジを形成し、この内フランジと電極渦
巻体との間に第一絶縁体を弾装した構成としてある。し
たがって、第一絶縁体が内フランジから受ける作用力が
電極渦巻体に押圧力として加わる。According to a second aspect of the present invention, in the cylindrical battery according to the first aspect, an inner flange for mounting a terminal plate is formed on the inner peripheral surface of the opening of the battery case, and the inner flange is connected to the electrode spiral body. It has a configuration in which the first insulator is mounted between them. Therefore, the acting force which the first insulator receives from the inner flange is applied as a pressing force to the electrode spiral body.
【００１４】請求項３記載の発明は、請求項１または２
記載の円筒形電池において、第一絶縁体の周縁に第二絶
縁体の端縁部を係止する爪部が形成されている構成とし
てある。したがって、第一絶縁体の爪部が第二絶縁体の
端縁部を係止することにより、第一絶縁体と第二絶縁体
とが一体化される。According to a third aspect of the present invention, there is provided the first or second aspect.
In the cylindrical battery described above, a claw portion for locking an edge of the second insulator is formed on a peripheral edge of the first insulator. Therefore, the first insulator and the second insulator are integrated by the claw portion of the first insulator locking the edge of the second insulator.
【００１５】請求項４記載の発明は、請求項１，２また
は３記載の円筒形電池において、第二絶縁体が平面円形
状の絶縁板からなる構成としてある。したがって、リー
ド線における撓み部分の復帰力を第二絶縁体が比較的広
い領域面にわたって受ける。According to a fourth aspect of the present invention, in the cylindrical battery according to the first, second or third aspect, the second insulator is formed of a plane circular insulating plate. Therefore, the second insulator receives the restoring force of the bent portion of the lead wire over a relatively large area surface.
【００１６】請求項５記載の発明は、請求項１，２また
は３記載の円筒形電池において、第二絶縁体が平面ほぼ
十字状の絶縁板からなる構成としてある。したがって、
第一絶縁体と第二絶縁体との一体化が、第二絶縁体の端
縁一部を第一絶縁体に接触させて行われる。According to a fifth aspect of the present invention, in the cylindrical battery according to the first, second or third aspect, the second insulator is formed of an insulating plate having a substantially cross-shaped planar shape. Therefore,
The integration of the first insulator and the second insulator is performed by bringing a part of the edge of the second insulator into contact with the first insulator.
【００１７】請求項６記載の発明（円筒形電池の製造方
法）は、正負両極板間にセパレータが介在する積層体を
予め巻回してなる電極渦巻体を有底円筒形状の電池ケー
ス内に収納し、次にこの電極渦巻体の正負両極板のうち
いずれか一方の極板を電池ケースの内面に接続した後、
電池ケースの開口部を閉塞する端子板に他方の極板をリ
ード線によって接続し、電池ケース内に電解液を注入し
てから、端子板を電池ケースの開口部に装着することに
より、円筒形電池を製造する方法において、端子板を装
着する前に、電極渦巻体をケース底面側に圧接する第一
絶縁体を電池ケース内に弾装した後、この第一絶縁体と
リード線の撓み部分を渦巻体側に押える第二絶縁体とを
一体化する工程を含ませる方法としてある。したがっ
て、電池ケースに対する端子板の装着が、リード線にお
ける撓み部分の復帰力を第二絶縁体によって受けた状態
で行われる。According to a sixth aspect of the invention (a method of manufacturing a cylindrical battery), an electrode spiral body formed by previously winding a laminate having a separator interposed between positive and negative electrode plates is housed in a bottomed cylindrical battery case. Then, after connecting one of the positive and negative electrode plates of this electrode spiral body to the inner surface of the battery case,
The other electrode plate is connected to the terminal plate that closes the opening of the battery case by a lead wire, the electrolytic solution is injected into the battery case, and then the terminal plate is attached to the opening of the battery case to form a cylindrical shape. In the method for manufacturing a battery, before mounting the terminal plate, after the first insulator for pressing the electrode spiral body against the case bottom side is elastically mounted in the battery case, the bent portion of the first insulator and the lead wire And a step of integrating the second insulator with the second insulator pressed toward the spiral body. Therefore, the mounting of the terminal plate to the battery case is performed in a state where the return force of the bent portion of the lead wire is received by the second insulator.
【００１８】[0018]
【発明の実施の形態】以下、本発明の実施形態につき、
図面を参照して説明する。図１は本発明の第一実施形態
に係る円筒形電池の要部を示す断面図、図２（ａ）およ
び（ｂ）は同じく本発明の第一実施形態に係る円筒形電
池における第一絶縁体を示す断面図と平面図、図３
（ａ）および（ｂ）は本発明の第一実施形態に係る円筒
形電池における第二絶縁体を示す断面図と平面図であ
る。図１〜図３において、符号１で示す円筒形電池は、
電池ケース２，電極渦巻体３，リード線４，絶縁体５お
よび端子板６を備えている。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a main part of a cylindrical battery according to a first embodiment of the present invention, and FIGS. 2A and 2B are first insulating parts of the cylindrical battery according to the first embodiment of the present invention. Sectional view and plan view showing the body, FIG.
(A) and (b) are the sectional view and the top view showing the 2nd insulator in the cylindrical battery concerning a first embodiment of the present invention. 1 to 3, the cylindrical battery denoted by reference numeral 1 is:
The battery includes a battery case, an electrode spiral body, a lead wire, an insulator, and a terminal plate.
【００１９】電池ケース２は、一方に開口し、この開口
内周面に円周方向に沿う環状の内フランジ２ａを有する
金属製の有底円筒体によって形成されている。電池ケー
ス２には、電極渦巻体３を浸漬する電解液（図示せず）
が内封されている。電極渦巻体３は、正極板３ａと負極
板３ｂとの間にセパレータ３ｃが介在する積層体を段付
き巻芯７の回りに渦巻状に巻回してなり、電池ケース２
内に収納されている。リード線４は、複数のリード線か
らなり、一方側の各端部が正極板３ａに接続され、かつ
他方側の各端部を巻芯７の軸線上で束ねて端子板６に接
続されている。The battery case 2 is formed of a metal bottomed cylinder having an opening on one side and an annular inner flange 2a along the circumferential direction on the inner surface of the opening. Electrolyte (not shown) for immersing electrode spiral body 3 in battery case 2
Is enclosed. The electrode spiral body 3 is formed by spirally winding a laminate in which a separator 3c is interposed between a positive electrode plate 3a and a negative electrode plate 3b around a stepped core 7.
Is housed inside. The lead wire 4 is composed of a plurality of lead wires, one end of which is connected to the positive electrode plate 3a, and the other end of which is bundled on the axis of the core 7 and connected to the terminal plate 6. I have.
【００２０】絶縁体５（下部絶縁体は図示せず）は、第
一絶縁体８および第二絶縁体９を有している。第一絶縁
体８は、内フランジ２ａと電極渦巻体３（巻芯７の段
部）との間に配設（弾装）されており、全体が平面円形
状の絶縁板によって形成されている。第一絶縁体８に
は、巻芯７が挿通する位置決め孔８ａおよびこの位置決
め孔８ａを中心として円周方向に沿う内外二組の貫通孔
８ｂ，８ｃが設けられている。The insulator 5 (the lower insulator is not shown) has a first insulator 8 and a second insulator 9. The first insulator 8 is provided (elastic) between the inner flange 2a and the electrode spiral body 3 (the step portion of the core 7), and is entirely formed by a plane circular insulating plate. . The first insulator 8 is provided with a positioning hole 8a through which the core 7 is inserted, and two sets of inner and outer through holes 8b and 8c extending in the circumferential direction around the positioning hole 8a.
【００２１】位置決め孔８ａは、第一絶縁体８の中心部
に配置されている。これにより、第一絶縁体８がケース
径方向に位置決めされる。各組の貫通孔８ｂ，８ｃは、
互いに異なる円周上に配置されている。これにより、リ
ード線４が第一絶縁体８の各貫通孔８ｂ，８ｃに挿通さ
れる。また、各組の貫通孔８ｂ，８ｃを利用してガス抜
きと電解液の注入が行われる。The positioning hole 8a is arranged at the center of the first insulator 8. Thereby, the first insulator 8 is positioned in the case radial direction. Each set of through holes 8b and 8c
They are arranged on different circumferences. Thereby, the lead wire 4 is inserted into each of the through holes 8 b and 8 c of the first insulator 8. In addition, degassing and injection of the electrolytic solution are performed using the through holes 8b and 8c of each set.
【００２２】第一絶縁体８の周縁には、第二絶縁体９の
端縁部を係止する弾性変形可能な環状の爪部８ｄが一体
に形成されている。これにより、第一絶縁体９が爪部８
ｄを弾性変形させて内フランジ２ａと段付き巻芯７との
間に装着されると、電極渦巻体３が電池ケース２の底面
側に圧接される。An elastically deformable annular claw 8d for locking the edge of the second insulator 9 is formed integrally with the periphery of the first insulator 8. As a result, the first insulator 9 is
When d is elastically deformed and mounted between the inner flange 2 a and the stepped core 7, the electrode spiral body 3 is pressed against the bottom side of the battery case 2.
【００２３】第二絶縁体９は、爪部８ｄの周縁部への係
止によって第二絶縁体８に一体化されており、全体が弾
性変形可能な平面円形状の皿体によって形成されてい
る。これにより、第一絶縁体８と第二絶縁体９とが一体
化すると、第一絶縁体８を挿通するリード線４の撓み部
分が電極渦巻体側に押えられる。すなわち、第二絶縁体
９の周縁部を第一絶縁体８の爪部８ｄが係止すると、リ
ード線４におけるばね性を有する撓み部分の復帰力を比
較的広い領域面にわたって第二絶縁体９が受ける。第二
絶縁体９には、中心部にリード線４が挿通する貫通孔９
ａおよびこの貫通孔９ａの周囲に所定の間隔をもって並
列する複数のガス抜き（電解液注入）用の貫通孔９ｂが
設けられている。The second insulator 9 is integrated with the second insulator 8 by engaging the claw portion 8d with the peripheral edge portion, and is entirely formed of a flat circular dish that can be elastically deformed. . As a result, when the first insulator 8 and the second insulator 9 are integrated, the bent portion of the lead wire 4 passing through the first insulator 8 is pressed toward the electrode spiral body. That is, when the claw portion 8d of the first insulator 8 locks the peripheral portion of the second insulator 9, the return force of the spring-like flexible portion of the lead wire 4 is applied to the second insulator 9 over a relatively wide area surface. Receive. The second insulator 9 has a through hole 9 through which the lead wire 4 is inserted at the center.
a and a plurality of gas vent (electrolyte injection) through holes 9b arranged in parallel around the through hole 9a at predetermined intervals.
【００２４】端子板６は、正極端子として機能する頂部
６ａを中央部に有し、内フランジ２ａ上にガスケット１
０とともに載置して電池ケース２の開口部内にかしめ固
定されており、全体が平面円形状の封止板によって形成
されている。The terminal plate 6 has a top portion 6a functioning as a positive electrode terminal at a central portion, and a gasket 1 on the inner flange 2a.
The battery case 2 is mounted together with the battery case 0 and caulked and fixed in the opening of the battery case 2, and is entirely formed by a flat circular sealing plate.
【００２５】次に、本実施形態における円筒形電池の製
造方法について説明する。すなわち、円筒形電池の製造
は、「下部絶縁体の収納」，「電極渦巻体の収納」，
「負極板の溶接」「上部絶縁体の取り付け」，「正極
板（リード線）の溶接」，「電解液の注入」，「上部絶
縁体の取り付け」および「端子板の装着」の工程を順
次経て行われる。Next, a method of manufacturing the cylindrical battery according to the present embodiment will be described. That is, the manufacture of the cylindrical battery includes “storage of the lower insulator”, “storage of the electrode spiral body”,
Steps of "welding of negative electrode plate", "attachment of upper insulator", "welding of positive electrode plate (lead wire)", "injection of electrolyte", "attachment of upper insulator", and "attachment of terminal plate". Done through.
【００２６】「下部絶縁体の収納」内フランジ形成前の
電池ケース２（外径３０ｍｍ×高さ１００ｍｍ）内に軸
線方向の端面がケース底部内面に当接するように平面円
形状の下部絶縁体（図示せず）を収納する。 「電極渦巻体の収納」予め形成された電極渦巻体３を内
フランジ形成前の電池ケース２内に収納する。このと
き、電極渦巻体３がケース底部内面上に下部絶縁体を介
して積層される。[Storing of Lower Insulator] A flat circular lower insulator (inside of the case) (an outer diameter of 30 mm × a height of 100 mm) is formed in the battery case 2 (outer diameter 30 mm × height 100 mm) before the inner flange is formed so that the end face in the axial direction abuts the inner surface of the case bottom. (Not shown). "Storing of the electrode spiral body" The electrode spiral body 3 formed in advance is housed in the battery case 2 before the inner flange is formed. At this time, the electrode spiral body 3 is laminated on the inner surface of the bottom of the case via the lower insulator.
【００２７】「負極板の溶接」次に、内フランジ形成前
における電池ケース２の内周面に最外周の負極板３ｂを
溶接する。 「上部絶縁体の取り付け」第一絶縁体８を内フランジ
形成前の電池ケース２内に位置決め挿入した後、内フラ
ンジ２ａをプレス成形して電池ケース２内に第一絶縁体
８を取り付ける。このとき、第一絶縁体８の位置決め孔
８ａに電極渦巻体３の巻芯７が挿通され、また第一絶縁
体８の爪部８ｄおよび電極渦巻体３がそれぞれ内フラン
ジ２ａと下部絶縁体に圧接される。Next, the outermost negative electrode plate 3b is welded to the inner peripheral surface of the battery case 2 before the inner flange is formed. "Attaching the upper insulator" The first insulator 8 is positioned and inserted into the battery case 2 before the inner flange is formed, and then the inner flange 2a is press-formed to attach the first insulator 8 into the battery case 2. At this time, the core 7 of the electrode spiral 3 is inserted into the positioning hole 8a of the first insulator 8, and the claw 8d of the first insulator 8 and the electrode spiral 3 are respectively connected to the inner flange 2a and the lower insulator. It is pressed.
【００２８】「正極板の溶接」正極板３ａ付きのリード
線４を第一絶縁体８の貫通孔８ｂ，８ｃに挿通させて端
子板６に溶接する。 「電解液の注入」乾燥後に第一絶縁体８の貫通孔８ｂ，
８ｃから電池ケース２内に電解液を注入する。なお、電
池ケース２に対する電解液の注入は、第一絶縁体８と第
二絶縁体９とを一体化した後に行ってもよい。[Welding of Positive Electrode Plate] The lead wire 4 with the positive electrode plate 3 a is inserted into the through holes 8 b and 8 c of the first insulator 8 and welded to the terminal plate 6. After the “injection of electrolyte” drying, the through holes 8b of the first insulator 8
The electrolyte is injected into the battery case 2 from 8c. The injection of the electrolyte into the battery case 2 may be performed after the first insulator 8 and the second insulator 9 are integrated.
【００２９】「上部絶縁体の取り付け」第一絶縁体８
の爪部８ａに第二絶縁体９の周縁部を弾性変形させなが
ら係止して両絶縁体８，９を一体化する。このとき、リ
ード線４の撓み部分が両絶縁体８，９間に配置される。
「端子板の装着」電池ケース２の内フランジ２ａ上に端
子板６をガスケット１０とともに載置し、次にケース開
口端部をかしめてケース開口部内に端子板６を装着した
後、初期充電を施す。このようにして、円筒形電池（外
径３０ｍｍ×高さ９８ｍｍ）を製造することができる。"Mounting of upper insulator" first insulator 8
The two insulators 8 and 9 are integrated by locking the peripheral portion of the second insulator 9 with the claw portion 8a while elastically deforming the same. At this time, the bent portion of the lead wire 4 is disposed between the insulators 8 and 9.
[Installation of Terminal Plate] The terminal plate 6 is placed together with the gasket 10 on the inner flange 2 a of the battery case 2, and then the end portion of the case opening is caulked to mount the terminal plate 6 in the case opening portion. Apply. In this way, a cylindrical battery (outer diameter 30 mm × height 98 mm) can be manufactured.
【００３０】したがって、本実施形態においては、電池
ケース２に対する端子板６の装着が、リード線４におけ
る撓み部分の復帰力を第二絶縁体９によって受けた状態
で行われるから、電池ケース２への端子板６の取付時に
従来必要とした内フランジ２ａ上に端子板６を押し付け
る作用力が不要になる。Therefore, in this embodiment, the terminal plate 6 is attached to the battery case 2 in a state where the return force of the bent portion of the lead wire 4 is received by the second insulator 9. When the terminal plate 6 is mounted, the force required to press the terminal plate 6 on the inner flange 2a, which is conventionally required, is not required.
【００３１】また、本実施形態において、リード線撓み
部分の復帰力を第二絶縁体９によって受けることは、ケ
ース振動時に撓み部分が移動しないから、リード線４の
他の部位への接触による短絡発生を防止することができ
る。さらに、本実施形態において、第一絶縁体８に第二
絶縁体９を一体化したことは、電池ケース２が振動して
も、第二絶縁体９によってリード線４に電極渦巻体３か
ら離間する方向の引張力が作用することがない。In the present embodiment, receiving the restoring force of the bent portion of the lead wire by the second insulator 9 means that the bent portion does not move when the case is vibrated. Generation can be prevented. Furthermore, in the present embodiment, the integration of the second insulator 9 with the first insulator 8 means that the lead wire 4 is separated from the electrode spiral body 3 by the second insulator 9 even when the battery case 2 vibrates. The direction of the pulling force does not act.
【００３２】なお、本実施形態においては、第二絶縁体
９が平面円形状である場合について説明したが、本発明
はこれに限定されず、第二実施形態として図４（ａ）お
よび（ｂ）に示すように第二絶縁体４１が平面十字状で
あってもよく、この場合に第一絶縁体８の爪部８ｄに対
する第二絶縁体４１の端縁（四箇所）の係止が第一実施
形態の場合と比較して簡単に行われる。同図において、
第二絶縁体４１の中心部には、リード線４が挿通する貫
通孔４１ａが設けられている。In the present embodiment, the case where the second insulator 9 has a plane circular shape has been described. However, the present invention is not limited to this, and FIGS. 4A and 4B show the second embodiment. ), The second insulator 41 may have a plane cross shape, and in this case, the locking of the edges (four places) of the second insulator 41 with the claw portions 8d of the first insulator 8 is performed. It is easier than in the case of one embodiment. In the figure,
In the center of the second insulator 41, a through hole 41a through which the lead wire 4 is inserted is provided.
【００３３】[0033]
【発明の効果】以上説明したように本発明によれば、リ
ード線が挿通する絶縁体は、電極渦巻体を電池ケースの
底面に圧接する第一絶縁体と、この第一絶縁体を挿通す
るリード線の撓み部分を電極渦巻体側に押える第二絶縁
体とが一体化してなるので、電池ケースに対する端子板
の装着が、リード線における撓み部分の復帰力を第二絶
縁体によって受けた状態で行われる。As described above, according to the present invention, the insulator through which the lead wire is inserted is a first insulator which presses the electrode spiral body against the bottom surface of the battery case, and the first insulator is inserted. Since the second insulator that presses the bent portion of the lead wire toward the electrode spiral body is integrated, the mounting of the terminal plate to the battery case is performed in a state where the return force of the bent portion of the lead wire is received by the second insulator. Done.
【００３４】したがって、電池ケースへの端子板の取付
時に従来必要とした内フランジ上に端子板を押し付ける
作用力が不要になるから、端子板の取付作業を簡単に行
うことができるとともに、生産性を高めることができ
る。また、第一絶縁体と第二絶縁体とを一体化したこと
は、電池ケースが振動しても、第二絶縁体が移動しない
から、第二絶縁体によってリード線に電極渦巻体から離
間する方向の引張力が作用せず、リード線における接続
部分の劣化・断線の発生を防止することができる。Therefore, when the terminal plate is mounted on the battery case, the force required to press the terminal plate onto the inner flange, which is conventionally required, becomes unnecessary, so that the operation of mounting the terminal plate can be performed easily and the productivity can be improved. Can be increased. Also, the fact that the first insulator and the second insulator are integrated means that even if the battery case vibrates, the second insulator does not move, so that the lead wire is separated from the electrode spiral by the second insulator. Since no tensile force acts in the direction, deterioration and disconnection of the connection portion of the lead wire can be prevented.
【図１】本発明の第一実施形態に係る円筒形電池の要部
を示す断面図である。FIG. 1 is a sectional view showing a main part of a cylindrical battery according to a first embodiment of the present invention.
【図２】（ａ）および（ｂ）は同じく本発明の第一実施
形態に係る円筒形電池における第一絶縁体を示す断面図
と平面図である。FIGS. 2A and 2B are a cross-sectional view and a plan view showing a first insulator in the cylindrical battery according to the first embodiment of the present invention.
【図３】（ａ）および（ｂ）は本発明の第一実施形態に
係る円筒形電池における第二絶縁体を示す断面図と平面
図である。FIGS. 3A and 3B are a cross-sectional view and a plan view showing a second insulator in the cylindrical battery according to the first embodiment of the present invention.
【図４】（ａ）および（ｂ）は本発明の第二実施形態に
係る円筒形電池における第二絶縁体を示す断面図と平面
図である。FIGS. 4A and 4B are a cross-sectional view and a plan view showing a second insulator in a cylindrical battery according to a second embodiment of the present invention.
【図５】従来の円筒形電池を示す断面図である。FIG. 5 is a sectional view showing a conventional cylindrical battery.
１ 円筒形電池 ２ 電池ケース ２ａ 内フランジ ３ 電池渦巻体 ３ａ 正極板 ３ｂ 負極板 ３ｃ セパレータ ４ リード線 ５ 絶縁体 ６ 端子板 ７ 段付き巻芯 ８ 第一絶縁体 ８ａ 位置決め孔 ８ｂ，８ｃ 貫通孔 ８ｄ 爪部 ９ 第二絶縁体 ９ａ，９ｂ 貫通孔 DESCRIPTION OF SYMBOLS 1 Cylindrical battery 2 Battery case 2a Inner flange 3 Battery spiral body 3a Positive electrode plate 3b Negative electrode plate 3c Separator 4 Lead wire 5 Insulator 6 Terminal plate 7 Stepped core 8 First insulator 8a Positioning holes 8b, 8c Through holes 8d Claw part 9 Second insulator 9a, 9b Through hole
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H022 AA09 AA18 CC08 CC12 CC16 KK03 5H024 CC02 CC12 DD11 EE00 5H029 AJ11 BJ02 BJ14 DJ05 EJ00 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H022 AA09 AA18 CC08 CC12 CC16 KK03 5H024 CC02 CC12 DD11 EE00 5H029 AJ11 BJ02 BJ14 DJ05 EJ00
Claims (6)
スと、 この電池ケース内に収納され、正負両極板間にセパレー
タが介在する積層体を巻回してなる電極渦巻体と、 この電極渦巻体の正負両極板のうちいずれか一方の極板
にリード線を介して接続され、前記電池ケースの開口部
を閉塞する端子板と、 この端子板と前記電極渦巻体との間に配設され、前記リ
ード線が挿通する絶縁体とを備え、 この絶縁体は、前記電極渦巻体を前記電池ケースの底面
側に圧接する第一絶縁体と、この第一絶縁体を挿通する
前記リード線の撓み部分を電極渦巻体側に押える第二絶
縁体とが一体化してなることを特徴とする円筒形電池。1. A battery case having a bottomed cylindrical shape, which is open on one side, an electrode spiral body which is housed in the battery case, and is formed by winding a laminate having a separator interposed between positive and negative electrode plates; A terminal plate connected to one of the positive and negative bipolar plates of the body via a lead wire to close an opening of the battery case; and a terminal plate disposed between the terminal plate and the electrode spiral body. And an insulator through which the lead wire passes. The insulator comprises a first insulator that presses the electrode spiral body against the bottom side of the battery case, and a lead wire that passes through the first insulator. A cylindrical battery comprising a second insulator that presses a bent portion toward an electrode spiral body, and is integrated with the second insulator.
板を載置する内フランジを形成し、この内フランジと前
記電極渦巻体との間に前記第一絶縁体を弾装したことを
特徴とする請求項１記載の円筒形電池。2. A battery according to claim 1, wherein an inner flange for mounting the terminal plate is formed on an inner peripheral surface of the opening of the battery case, and the first insulator is elastically mounted between the inner flange and the electrode spiral body. The cylindrical battery according to claim 1, wherein:
体の端縁部を係止する爪部が形成されていることを特徴
とする請求項１または２記載の円筒形電池。3. The cylindrical battery according to claim 1, wherein a claw portion for locking an edge of the second insulator is formed on a peripheral edge of the first insulator.
からなることを特徴とする請求項１，２または３記載の
円筒形電池。4. The cylindrical battery according to claim 1, wherein the second insulator comprises a flat circular insulating plate.
縁板からなることを特徴とする請求項１，２または３記
載の円筒形電池。5. The cylindrical battery according to claim 1, wherein the second insulator is formed of a substantially cross-shaped insulating plate in a plane.
層体を予め巻回してなる電極渦巻体を有底円筒形状の電
池ケース内に収納し、 次に、この電極渦巻体の正負両極板のうちいずれか一方
の極板を前記電池ケースの内面に接続した後、 前記電池ケースの開口部を閉塞する端子板に他方の極板
をリード線によって接続し、 前記電池ケース内に電解液を注入してから、 前記端子板を前記電池ケースの開口部に装着することに
より、円筒形電池を製造する方法において、 前記端子板を装着する前に、前記電極渦巻体をケース底
面側に圧接する第一絶縁体を前記電池ケース内に弾装し
た後、 この第一絶縁体と前記リード線の撓み部分を渦巻体側に
押える第二絶縁体とを一体化する工程を含ませることを
特徴とする円筒形電池の製造方法。6. An electrode spiral formed by previously winding a laminate in which a separator is interposed between the positive and negative electrode plates is housed in a bottomed cylindrical battery case. After connecting one of the electrode plates to the inner surface of the battery case, the other electrode plate is connected to a terminal plate that closes an opening of the battery case by a lead wire, and an electrolyte is injected into the battery case. Then, by attaching the terminal plate to the opening of the battery case, in a method of manufacturing a cylindrical battery, before attaching the terminal plate, pressing the electrode spiral body against the case bottom side. A step of integrating the first insulator into the battery case and then integrating the first insulator with a second insulator that presses the bent portion of the lead wire toward the spiral body. Manufacturing method of the shape battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37426199A JP3574772B2 (en) | 1999-12-28 | 1999-12-28 | Cylindrical battery and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37426199A JP3574772B2 (en) | 1999-12-28 | 1999-12-28 | Cylindrical battery and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001185118A true JP2001185118A (en) | 2001-07-06 |
| JP3574772B2 JP3574772B2 (en) | 2004-10-06 |
Family
ID=18503542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37426199A Expired - Lifetime JP3574772B2 (en) | 1999-12-28 | 1999-12-28 | Cylindrical battery and method of manufacturing the same |
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| Country | Link |
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| JP (1) | JP3574772B2 (en) |
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| JP2009289683A (en) * | 2008-05-30 | 2009-12-10 | Hitachi Vehicle Energy Ltd | Sealed-type secondary battery |
| JP2010009841A (en) * | 2008-06-25 | 2010-01-14 | Panasonic Corp | Cylindrical sealed battery |
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- 1999-12-28 JP JP37426199A patent/JP3574772B2/en not_active Expired - Lifetime
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| JP4556428B2 (en) * | 2003-12-24 | 2010-10-06 | 株式会社Ｇｓユアサ | battery |
| JP2005183332A (en) * | 2003-12-24 | 2005-07-07 | Japan Storage Battery Co Ltd | Battery |
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| CN105870393B (en) * | 2015-01-22 | 2024-05-28 | 松下新能源(无锡)有限公司 | Insulating plate for battery and battery with same |
| CN105870393A (en) * | 2015-01-22 | 2016-08-17 | 松下能源(无锡)有限公司 | Insulating plate for battery and battery with insulating plate |
| KR20160137218A (en) * | 2015-05-22 | 2016-11-30 | 주식회사 엘지화학 | Secondary battery |
| KR101865996B1 (en) * | 2015-05-22 | 2018-06-08 | 주식회사 엘지화학 | Secondary battery |
| CN113711404A (en) * | 2019-01-30 | 2021-11-26 | 株式会社Lg新能源 | Cylindrical secondary battery and method for manufacturing the same |
| JP2022513137A (en) * | 2019-01-30 | 2022-02-07 | エルジー エナジー ソリューション リミテッド | Cylindrical secondary battery and its manufacturing method |
| US20220069334A1 (en) * | 2019-01-30 | 2022-03-03 | Lg Energy Solution, Ltd. | Cylindrical Secondary Battery and Manufacturing Method Thereof |
| WO2021230014A1 (en) * | 2020-05-15 | 2021-11-18 | パナソニックＩｐマネジメント株式会社 | Hermetically sealed battery |
| CN115516706A (en) * | 2020-05-15 | 2022-12-23 | 松下知识产权经营株式会社 | Sealed battery |
| JP7398719B2 (en) | 2020-05-15 | 2023-12-15 | パナソニックＩｐマネジメント株式会社 | sealed battery |
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