JPH10340737A - Manufacture of cylindrical closed-type battery - Google Patents
Manufacture of cylindrical closed-type batteryInfo
- Publication number
- JPH10340737A JPH10340737A JP9148803A JP14880397A JPH10340737A JP H10340737 A JPH10340737 A JP H10340737A JP 9148803 A JP9148803 A JP 9148803A JP 14880397 A JP14880397 A JP 14880397A JP H10340737 A JPH10340737 A JP H10340737A
- Authority
- JP
- Japan
- Prior art keywords
- electrode plate
- current collector
- welding
- intermediate current
- edge
- 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
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)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、円筒密閉型電池の
製造方法に関する。[0001] The present invention relates to a method for manufacturing a sealed cylindrical battery.
【０００２】[0002]
【従来の技術】セパレータを挟んで正極板および負極板
を渦巻状に巻装してなる電極アセンブリを電解液ととも
に円筒缶状のケ−スに密閉してなる従来の円筒密閉型電
池では、ケ−スの上端面中央部に保持されて外部に突出
する正極端子（タ−ミナル）と、正極板の上縁部とを接
続するために、円盤状集電体を用いている。2. Description of the Related Art In a conventional cylindrical sealed battery in which an electrode assembly formed by spirally winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween is sealed together with an electrolytic solution in a cylindrical can-shaped case, A disc-shaped current collector is used to connect the positive terminal (terminal), which is held at the center of the upper end surface of the case and protrudes to the outside, to the upper edge of the positive plate.
【０００３】この円盤状集電体は、正極板各部の電位ば
らつきを抑止するために、正極板の上縁部のほぼ全部分
にわたって円盤状集電体の円形の下端面に電気溶接され
る。従来の円盤状集電体の例を図８に示す。溝部１００
ａでほとんど半割された円盤状集電体１００の外周縁に
は、突起１００ｂが形成されており、突起１００ｂは、
円盤状集電体１ＯＯの２つの半円板部１００ｃ、１００
ｄを結合している。上記円盤状集電体１００の溶接工程
を図９に示す。[0003] This disc-shaped current collector is electrically welded to the circular lower end surface of the disc-shaped current collector over substantially the entire upper edge portion of the positive electrode plate in order to suppress potential variations in each part of the positive electrode plate. FIG. 8 shows an example of a conventional disk-shaped current collector. Groove 100
A protrusion 100b is formed on the outer peripheral edge of the disc-shaped current collector 100 that is almost halved by a.
Two semi-disk portions 100c, 100 of the disk-shaped current collector 1OO
d. FIG. 9 shows a welding process of the disc-shaped current collector 100.
【０００４】１０１は正極板、１０２は溶接部分、１０
４、１０５は溶接棒、矢印は電流通電方向である。溶接
棒１０４、１０５は円盤状集電体１００の２つの半円板
部１００ｃ、１００ｄの外周部に別々に接触される。こ
の状態で、通電を行うと、一部は突起１００ｂを流れ、
残部は一方の半円板部１００ｃから正極板１０１を通じ
て他方の半円板部１００ｄに流れ、この時、比較的大き
な電圧損失が生じる正極板と円盤状集電体との接触部分
（溶接部分）１０２で抵抗溶接が行われる。[0004] 101 is a positive electrode plate, 102 is a welded portion, 10
Reference numerals 4 and 105 indicate welding rods, and arrows indicate directions of current supply. The welding rods 104 and 105 are separately brought into contact with the outer peripheral portions of the two semi-disk portions 100c and 100d of the disc-shaped current collector 100. When electricity is supplied in this state, a part of the current flows through the protrusion 100b,
The remainder flows from one semi-circular portion 100c to the other semi-circular portion 100d through the positive electrode plate 101, and at this time, a contact portion (weld portion) between the positive electrode plate and the disc-shaped current collector, where a relatively large voltage loss occurs. At 102, resistance welding is performed.
【０００５】[0005]
【発明が解決しようとする課題】上述した従来の円盤状
集電体構造では、以下の問題があった。まず、電池抵抗
および正極板各部の電位ばらつきの増大を抑止しつつ電
池の大径化による大容量化を実現するには、電流が集中
する円盤状集電体１００の電気抵抗を低減する必要があ
り、そのために集電体を厚くすることが必須となる。The above-mentioned conventional disk-shaped current collector structure has the following problems. First, in order to suppress the increase in the battery resistance and the potential variation of each part of the positive electrode plate and to increase the capacity by increasing the diameter of the battery, it is necessary to reduce the electric resistance of the disc-shaped current collector 100 on which current is concentrated. Therefore, it is necessary to increase the thickness of the current collector.
【０００６】しかしながら、円盤状集電体１００を厚く
すると、円盤状集電体１００の各部の電気抵抗が減少
し、これにより突起１００ｂを通じての突起側電流経路
の電気抵抗が低下する。これに対して、正極板１０１を
通過する正極板側電流経路の電気抵抗は、正極板１０１
と円盤状集電体１００との間の接触抵抗が介在するこ
と、円盤状集電体１００の外周部間の電流経路は長くな
ることなどの理由で、全体としてそれほど低下しない。[0006] However, when the disk-shaped current collector 100 is made thicker, the electric resistance of each part of the disk-shaped current collector 100 decreases, and as a result, the electric resistance of the projection-side current path through the projection 100b decreases. On the other hand, the electric resistance of the current path on the positive electrode side passing through the positive electrode 101 is
Due to the interposition of contact resistance between the current collector 100 and the disk-shaped current collector 100, the current path between the outer peripheral portions of the disk-shaped current collector 100 becomes longer, and the like, so that it does not decrease much as a whole.
【０００７】これらの結果、電池の大径化による充放電
電流の増大や電池抵抗の低減や正極板１０１の各部の電
位ばらつきの低減を図るために円盤状集電体１００の厚
さを増大すると、従来の抵抗溶接では円盤状集電体１０
０と正極板との間の溶接品質が低下するという問題が生
じた。なお、正極板１０１の各部の電位ばらつきの低減
は、特に局部的な過充電、過放電の発生による容量およ
びサイクル寿命の低下を抑止する点で重要である。As a result, when the thickness of the disk-shaped current collector 100 is increased in order to increase the charge / discharge current due to the increase in the diameter of the battery, to reduce the battery resistance, and to reduce the potential variation of each part of the positive electrode plate 101. In the conventional resistance welding, the disk-shaped current collector 10 is used.
There was a problem that the welding quality between 0 and the positive electrode plate deteriorated. It is important to reduce the variation in potential of each part of the positive electrode plate 101, particularly in terms of suppressing a decrease in capacity and cycle life due to local overcharge and overdischarge.
【０００８】本発明は上記問題に鑑みなされたものであ
り、極板と中間集電体との溶接品質の低下を回避しつ
つ、電池抵抗の低減や極板各部の電位ばらつきの低減を
実現し、低損失大容量の円筒密閉型電池の製造方法を提
供することをその解決すべき課題としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made to achieve a reduction in battery resistance and a reduction in potential variation in each part of an electrode plate while avoiding a decrease in welding quality between the electrode plate and the intermediate current collector. It is an object of the present invention to provide a method for manufacturing a low-loss, large-capacity cylindrical sealed battery.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
の請求項１記載の円筒密閉型電池の製造方法によれば、
電極端子と極板の端縁部との接続のために、中間集電体
が極板の渦巻状の端縁部に沿って略径方向に延設され
る。厚さ方向に貫通する溶接用スリットを中間集電体に
形成し、この溶接用スリットに極板の端縁部を嵌挿し、
反極板側に露出した極板の端縁部を中間集電体に溶接し
て両者を一体化する。According to a first aspect of the present invention, there is provided a method for manufacturing a sealed cylindrical battery.
For connection between the electrode terminal and the edge of the electrode plate, an intermediate current collector extends substantially radially along the spiral edge of the electrode plate. A welding slit that penetrates in the thickness direction is formed in the intermediate current collector, and the edge of the electrode plate is inserted into the welding slit,
The edge portion of the electrode plate exposed to the opposite electrode plate side is welded to the intermediate current collector to integrate them.
【００１０】このようにすれば、極板と中間集電体との
溶接性の低下を回避しつつ、電池抵抗の低減や極板各部
の電位ばらつきの低減を実現し、低損失大容量の円筒密
閉型電池を実現することができる。更に説明すれば、こ
の構成では、中間集電体の溶接用スリットに嵌挿された
極板の端縁部が中間集電体の反極板側に露出する状態と
なるので、中間集電体の反極板側からのたとえばレ−ザ
−光やア−ク放電などの溶接エネルギ−の供給より、溶
接すべき各部を同一の溶接条件で、良好、確実、簡単に
溶接することができる。With this configuration, it is possible to reduce the battery resistance and the potential variation of each part of the electrode plate while avoiding a decrease in the weldability between the electrode plate and the intermediate current collector, and realize a low-loss large-capacity cylinder. A sealed battery can be realized. More specifically, in this configuration, since the edge of the electrode plate inserted into the welding slit of the intermediate current collector is exposed to the opposite electrode plate side of the intermediate current collector, the intermediate current collector By supplying welding energy such as laser light or arc discharge from the opposite electrode plate side, each part to be welded can be welded well, reliably and easily under the same welding conditions.
【００１１】また、上述した極板を迂回する電流が生じ
る電気溶接法（抵抗溶接法）を採用する必要がないの
で、上述したその問題を回避することができる。特に、
上記した従来の電気溶接法では、極板の端縁部各部を高
度に平坦化することが困難であるので、中間集電体を薄
くすることにより、それを厚さ方向（電池の軸方向）に
変形させて極板の端縁部各部と中間集電体との接触の度
合を均一化し、これにより電流分布のばらつきを低減
し、局部的な溶接不良を低減する必要もあった。この理
由からも、従来は中間集電体を厚くすることが難しかっ
た。これに対し、この製造方法によれば、中間集電体の
厚さを溶接性の全体的または局部的な不良を招くことな
く自由に厚くすることができるという優れた効果を奏す
る。In addition, since it is not necessary to employ an electric welding method (resistance welding method) in which a current bypassing the electrode plate is generated, the above-described problem can be avoided. Especially,
In the above-described conventional electric welding method, it is difficult to highly flatten the edge portions of the electrode plate. Therefore, the intermediate current collector is made thinner in the thickness direction (axial direction of the battery). Therefore, it is necessary to make the degree of contact between each end portion of the electrode plate and the intermediate current collector uniform, thereby reducing variations in current distribution and reducing local welding defects. For this reason, it has conventionally been difficult to increase the thickness of the intermediate current collector. On the other hand, according to this manufacturing method, there is an excellent effect that the thickness of the intermediate current collector can be freely increased without causing overall or local defects in weldability.
【００１２】請求項２記載の製造方法によれば請求項１
記載の方法において更に、溶接にはレ−ザ−溶接が採用
される。このようにすれば、所定の狭小部位に溶接エネ
ルギ−を集中できるので、良好な溶接を行うことができ
る。請求項３記載の製造方法によれば請求項１記載の方
法において更に、円筒缶形状のケ−スから外部に突出す
る電極端子と中間集電体とを同一素材の加工により一体
に形成する。According to the manufacturing method of the second aspect, the first aspect is provided.
Further, in the method described, laser welding is employed. In this way, welding energy can be concentrated on a predetermined narrow portion, so that good welding can be performed. According to the manufacturing method of the third aspect, in the method of the first aspect, the electrode terminal and the intermediate current collector projecting to the outside from the cylindrical can-shaped case are integrally formed by processing the same material.
【００１３】このようにすれば、両者の溶接を必要とし
ないので、製造工程を簡素化し、信頼性を向上すること
ができる。すなわち、上述したように請求項１記載の方
法によれば、極板の端縁部各部の軸方向寸法のばらつき
を中間集電体の変形で吸収する必要がないので、中間集
電体の厚さはそれに制約されることなく自由に成形する
ことができる。したがって、たとえば厚いＮｉ板の打ち
抜き、プレスなどにより、容易に３次元形状をもつ中間
集電体、電極端子一体品を作製することができる。[0013] In this case, since welding of both is not required, the manufacturing process can be simplified and the reliability can be improved. That is, as described above, according to the method of the first aspect, it is not necessary to absorb variations in the axial dimension of each edge portion of the electrode plate by deformation of the intermediate current collector. The shape can be freely formed without being restricted by it. Therefore, an intermediate current collector and an electrode terminal integrated product having a three-dimensional shape can be easily manufactured by, for example, punching or pressing a thick Ni plate.
【００１４】請求項４記載の方法によれば請求項１記載
の方法において更に、極板の端縁部各部に形成された耳
部を櫛形の中間集電体の溝部に嵌挿するので、嵌挿が容
易となる。すなわち、中間集電体を極板の端縁部に対し
て電池軸心と直角の方向に相対変位すればよいので、挿
入は極めて容易となる。請求項５記載の方法によれば、
請求項２記載の方法において更に、複数の耳部をまとめ
て一対の櫛歯間の溝部に嵌挿する。このようにすれば、
嵌挿が更に容易となる。According to the method described in claim 4, in the method described in claim 1, furthermore, the ear formed at each end of the electrode plate is inserted into the groove of the comb-shaped intermediate current collector. Insertion becomes easy. That is, since the intermediate current collector may be displaced relative to the edge of the electrode plate in a direction perpendicular to the battery axis, the insertion becomes extremely easy. According to the method of claim 5,
The method according to claim 2, wherein the plurality of ears are collectively inserted into the groove between the pair of comb teeth. If you do this,
The insertion becomes easier.
【００１５】請求項６記載の方法によれば請求項１記載
の円筒密閉型電池の製造方法において更に、溶接用スリ
ットを渦巻状に形成する。このようにすれば、極板の端
縁部をその全長にわたって嵌挿することができ、極板の
電位分布のばらつきを低減する事ができる。またなお、
好適な態様において、極板の渦巻状の端縁部はその一
部、好ましくは内周端または外周端が他の部分より軸方
向に突出するように形成され、次第に軸方向に後退する
形状に形成される。According to a sixth aspect of the present invention, in the method for manufacturing a cylindrical sealed battery according to the first aspect, the welding slit is further formed in a spiral shape. With this configuration, the end portion of the electrode plate can be fitted over the entire length thereof, and variation in the potential distribution of the electrode plate can be reduced. Again,
In a preferred embodiment, the spiral end portion of the electrode plate is formed so that a part thereof, preferably an inner peripheral end or an outer peripheral end, protrudes in the axial direction from other parts, and has a shape gradually retreating in the axial direction. It is formed.
【００１６】このようにすれば、この突出部分を中間集
電体の渦巻状の溶接用スリットに嵌挿した後、中間集電
体を極板に対して相対回転させることにより、極板の端
縁部は、上記突出部分に近接する部分から徐々に溶接用
スリットに嵌挿されるので、嵌挿工程を簡素化すること
ができる。According to this configuration, after inserting the protruding portion into the spiral welding slit of the intermediate current collector, the intermediate current collector is rotated relative to the electrode plate, whereby the end of the electrode plate is rotated. Since the edge is gradually inserted into the welding slit from a portion adjacent to the protruding portion, the insertion process can be simplified.
【００１７】[0017]
【発明の実施の形態】円筒密閉型電池としては、たとえ
ばニッケル水素電池が採用できる。ニッケル水素電池の
正の極板（正極板）としては、発泡ニッケルなどを素材
とする金属多孔体やパンチングメタル、エキスパンドメ
タルなどに水酸化ニッケル粉末を含むペーストを充填し
たものが採用できる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As a sealed cylindrical battery, for example, a nickel hydrogen battery can be adopted. As the positive electrode plate (positive electrode plate) of the nickel-metal hydride battery, a material in which a paste containing nickel hydroxide powder is filled in a porous metal body made of foamed nickel or the like, a punching metal, an expanded metal, or the like can be used.
【００１８】ニッケル水素電池の負の極板（負極板）と
しては、発泡ニッケルなどを素材とする金属多孔体やパ
ンチングメタル、エキスパンドメタルなどに水素吸蔵合
金粉末を含むペーストを充填したものが採用できる。電
極端子や中間集電体としてはＮｉを素材としたものが好
適である。水素吸蔵合金粉末としては、ミッシュメタル
系材料が好適であるが、それ以外の材料例えばＺｒ系や
Ｔｉ−Ｍｎ系材料を用いることができる。水素吸蔵合金
粉末の平均粒径は１０〜１５０μｍとすることが好まし
い。As the negative electrode plate (negative electrode plate) of the nickel-metal hydride battery, a porous metal body made of foamed nickel or the like, a punched metal, an expanded metal, or the like filled with a paste containing a hydrogen storage alloy powder can be used. . As the electrode terminal and the intermediate current collector, a material made of Ni is preferable. As the hydrogen storage alloy powder, a misch metal-based material is preferable, but other materials such as a Zr-based material and a Ti-Mn-based material can be used. The hydrogen storage alloy powder preferably has an average particle size of 10 to 150 μm.
【００１９】[0019]
【実施例】以下、本発明の円筒密閉型電池の製造方法を
適用したニッケル水素電池を図面を参照して以下に説明
する。 （実施例１）図１はニッケル水素電池の正極側の半部の
軸方向部分断面図を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A nickel-metal hydride battery to which the method for manufacturing a sealed cylindrical battery according to the present invention is applied will be described below with reference to the drawings. (Example 1) FIG. 1 is an axial partial cross-sectional view of a half portion on the positive electrode side of a nickel metal hydride battery.
【００２０】１は円筒ケ−スであり、その両端開口は電
気絶縁用の樹脂リング２を介して円盤状の蓋板（一方の
みを図示）３で密閉されている。４は安全弁である。５
は電極アセンブリであり、図示しないセパレ−タを介し
て正極板６と負極板（図示せず）とを重ねて渦巻状に巻
装して円筒状に形成されている。ただし、図１におい
て、電極アセンブリ５は模式的に図示されており、セパ
レータおよび負極板の図示は省略されている。６１は正
極板６の正側の端縁部を示し、破線ｂは負極板（図示せ
ず）の正側の端縁部の位置を示す。なお、セパレ−タの
正側の端縁部は両極間の電気絶縁のために正極板６の端
縁部６１に近い位置まで設けられている。Reference numeral 1 denotes a cylindrical case, the openings at both ends of which are sealed by a disk-shaped cover plate (only one is shown) 3 via a resin ring 2 for electrical insulation. 4 is a safety valve. 5
Reference numeral denotes an electrode assembly, which is formed in a cylindrical shape by stacking a positive electrode plate 6 and a negative electrode plate (not shown) via a separator (not shown) and spirally winding them. However, in FIG. 1, the electrode assembly 5 is schematically illustrated, and the separator and the negative electrode plate are not illustrated. Reference numeral 61 indicates a positive edge of the positive electrode plate 6, and a broken line b indicates a position of the positive edge of the negative electrode plate (not shown). The positive edge of the separator is provided to a position near the edge 61 of the positive electrode plate 6 for electrical insulation between the two electrodes.
【００２１】正極板６の部分斜視図を図４に示す。６２
は正極板６の端縁部６１からその各半周ごとに略方向へ
突出する耳部であって、各耳部６２は、略周方向、正確
には接線方向に所定幅を有して径方向に直線的に重なっ
ている。７は、本発明でいう正極端子および中間集電体
を兼ねる＋タ−ミナルであって、＋タ−ミナル７は、正
極板６の端縁部６１に対して軸方向に所定間隔を隔てて
径方向へ延設される中間集電体部７１と、中間集電体部
７１の径方向中心位置から蓋板３を貫いて軸方向外側に
突出する正極端子部７２とからなる。FIG. 4 is a partial perspective view of the positive electrode plate 6. 62
Are lugs projecting from the edge 61 of the positive electrode plate 6 in substantially the same direction every half circumference thereof. Each lug 62 has a predetermined width in a substantially circumferential direction, more precisely, a tangential direction, and has a radial width. Overlaps linearly. Reference numeral 7 denotes a + terminal which also serves as a positive electrode terminal and an intermediate current collector according to the present invention. The + terminal 7 is spaced apart from the edge 61 of the positive electrode plate 6 by a predetermined distance in the axial direction. It comprises an intermediate current collector 71 extending in the radial direction, and a positive electrode terminal 72 projecting axially outward through the cover plate 3 from the radial center of the intermediate current collector 71.
【００２２】更に説明すると、中間集電体部７１は、左
右それぞれ４つの溝部７３をもち、溝部７３は中間集電
体部７１を厚さ方向に貫通している。溝部７３は、それ
ぞれ略周方向、正確には接線方向に伸びる直線溝であっ
て、中間集電体部７１は全体として櫛形に形成されてい
る。＋タ−ミナル７の断面図を図３に示す。ただし、図
３においては、＋タ−ミナル７とケ−ス１とだけが図示
されている。More specifically, the intermediate current collector 71 has four grooves 73 on each of the left and right sides, and the grooves 73 penetrate the intermediate current collector 71 in the thickness direction. The groove portions 73 are linear grooves extending substantially in the circumferential direction, more precisely, in the tangential direction, and the intermediate current collector portion 71 is formed in a comb shape as a whole. FIG. 3 is a cross-sectional view of the + terminal 7. However, in FIG. 3, only the + terminal 7 and the case 1 are shown.
【００２３】これら溝部７３には、所定枚数（図１では
各５枚）の耳部６２が嵌挿されており、各耳部６２の上
端部はレ−ザ−溶接により溝部７３にて中間集電体部７
１に溶接されている。７４は溶接部である。なお、図１
における耳部６２および溝部７３の図示は右半部だけで
あり、それらの左半部の図示は省略されている。中間集
電体部７１は、電気絶縁用のスペ−サ８を介してケ−ス
１の内周により保持されている。A predetermined number (five in FIG. 1) of ears 62 are fitted into these grooves 73, and the upper ends of the ears 62 are intermediately collected at the grooves 73 by laser welding. Electric part 7
1 is welded. 74 is a welding part. FIG.
The illustration of the ear part 62 and the groove part 73 is only the right half, and the illustration of the left half thereof is omitted. The intermediate current collector 71 is held by the inner periphery of the case 1 via a spacer 8 for electrical insulation.
【００２４】負極板（図示せず）は、上述した正極板６
とまったく同じようにそれと反対側へ突出しており、そ
の耳部（図示せず）は、上述した＋タ−ミナル７と同一
構造の−タ−ミナル（図示せず）の中間集電体部の溝部
（図示せず）に、上記したと全く同じようにレ−ザ−溶
接されている。電池の軸方向断面図を図２に示す。ただ
し、図２の図示状態は図１の図示状態と９０度異なる。The negative electrode plate (not shown) is connected to the positive electrode plate 6 described above.
The ears (not shown) have the same structure as the above-mentioned + terminal 7 of the -terminal (not shown) of the intermediate current collector part. Laser welded to the groove (not shown) exactly as described above. FIG. 2 shows an axial sectional view of the battery. However, the illustrated state of FIG. 2 differs from the illustrated state of FIG. 1 by 90 degrees.
【００２５】この電池の組み立て方法を以下に説明す
る。正極板６の端縁部６１に耳部６２を溶接し、同様に
その負極板の端縁部に耳部を溶接する。次に、正極板
６、セパレータおよび負極板を巻装して電極アセンブリ
５を形成し、＋タ−ミナル７の中間集電体部７１および
−タ−ミナルの中間集電体部にそれぞれ耳部６２を取り
付ける。すなわち、電極アセンブリ５の正極板６の耳部
６２を、＋タ−ミナル７の中間集電体部７１の溝部７３
に差し入れ、正極板６の反対側からレ−ザ−溶接により
両者を溶接する。次に、負極板側も同様に処理する。次
に、ケ−ス１に正極側の蓋板３を取り付け、＋タ−ミナ
ル７の正極端子部７２と蓋板３とを溶接する。次に、ケ
−ス１内に電解液を入れ、反対側の蓋板３を取り付け、
それに−タ−ミナルの負極端子部を溶接する。A method for assembling this battery will be described below. A lug 62 is welded to the edge 61 of the positive electrode plate 6, and a lug is similarly welded to the edge of the negative electrode plate. Next, the positive electrode plate 6, the separator, and the negative electrode plate are wound to form the electrode assembly 5, and the intermediate current collector portion 71 of the + terminal 7 and the intermediate current collector portion of the-terminal have ears respectively. Attach 62. That is, the ear 62 of the positive electrode plate 6 of the electrode assembly 5 is inserted into the groove 73 of the intermediate collector 71 of the + terminal 7.
And weld them together by laser welding from the opposite side of the positive electrode plate 6. Next, the same process is performed on the negative electrode plate side. Next, the cover plate 3 on the positive electrode side is attached to the case 1, and the positive electrode terminal portion 72 of the + terminal 7 and the cover plate 3 are welded. Next, the electrolytic solution is put into the case 1 and the cover plate 3 on the opposite side is attached.
Then, the negative terminal of the terminal is welded.
【００２６】このようにすれば、上述した本発明の作用
効果を奏することができる。 （実施例２）他の実施例を図５を参照して説明する。こ
の実施例は、実施例１の正極板６の耳部６２を４列、十
字状に増設したものであり、当然、中間集電体部７１の
溝部７３も図示省略するがそれに応じて増設されてい
る。このようにすれば、更に、電極抵抗の低減を図るこ
とができる。 （実施例３）他の実施例を図６を参照して説明する。た
だし、実施例１の電池の構成要素と主要な機能が共通す
る構成要素には同一符号を付すものとする。In this way, the above-described effects of the present invention can be obtained. (Embodiment 2) Another embodiment will be described with reference to FIG. In this embodiment, the lugs 62 of the positive electrode plate 6 of the first embodiment are added in four rows in a cross shape. Of course, the groove 73 of the intermediate current collector 71 is also omitted, although not shown. ing. With this configuration, the electrode resistance can be further reduced. (Embodiment 3) Another embodiment will be described with reference to FIG. However, components having the same main functions as those of the battery of the first embodiment are denoted by the same reference numerals.
【００２７】この実施例は、実施例１における＋タ−ミ
ナル７の中間集電体部７１の形状を変更するとともに、
正極板６の耳部６２を省略したものである。詳細に説明
すると、この実施例の＋タ−ミナル７の中間集電体部７
１は、図７に示すように円盤形状に形成されており、そ
の溝部７３は正極板６の端縁部６２の形状に合わせて渦
巻状に形成されている。In this embodiment, the shape of the intermediate current collector 71 of the + terminal 7 in the first embodiment is changed.
The ear 62 of the positive electrode plate 6 is omitted. More specifically, the intermediate current collector 7 of the + terminal 7 of this embodiment will be described.
1 is formed in a disk shape as shown in FIG. 7, and its groove 73 is formed in a spiral shape in conformity with the shape of the edge 62 of the positive electrode plate 6.
【００２８】この実施例では、正極板６の端縁部６２を
渦巻状の溝部７３に嵌挿した後、その全長にわたってレ
−ザ−溶接を行ったものである。もちろん、図示しない
−タ−ミナル側も同じ構造とされる。このようにすれ
ば、電極抵抗の一層の低減を図ることができる。なお、
配線接続のために、＋タ−ミナル７の正極端子部７２の
先端部を雄ねじを形成することは当然、可能である。In this embodiment, after the edge 62 of the positive electrode plate 6 is inserted into the spiral groove 73, laser welding is performed over the entire length thereof. Of course, the -terminal side (not shown) has the same structure. In this case, the electrode resistance can be further reduced. In addition,
It is, of course, possible to form a male screw at the tip of the positive terminal 72 of the + terminal 7 for wiring connection.
【図１】実施例１の電池における正極側の半部の軸方向
部分断面図である。FIG. 1 is an axial partial cross-sectional view of a half part on the positive electrode side in a battery of Example 1.
【図２】図１の円筒密閉型電池を９０度異なる角度から
図示した軸方向部分断面図である。FIG. 2 is a partial axial sectional view showing the cylindrical sealed battery of FIG. 1 at an angle different from 90 degrees.
【図３】図１の電池における電極アセンブリ５を省略し
た場合のＡ−Ａ線矢視断面図である。FIG. 3 is a cross-sectional view taken along line AA of FIG. 1 when an electrode assembly 5 is omitted.
【図４】図１の電池における電極アセンブリ５の部分斜
視図である。FIG. 4 is a partial perspective view of an electrode assembly 5 in the battery of FIG.
【図５】実施例２の電池における電極アセンブリ５の部
分斜視図である。FIG. 5 is a partial perspective view of an electrode assembly 5 in the battery of Example 2.
【図６】実施例３の電池における正極板６の端縁部６２
と＋タ−ミナル７の中間集電体部７１との接続状態を示
す径方向部分断面図である。FIG. 6 is an edge 62 of a positive electrode plate 6 in the battery of Example 3.
FIG. 9 is a radial partial cross-sectional view showing a connection state between the positive terminal 7 and an intermediate current collector 71.
【図７】図６の＋タ−ミナル７の平面図である。FIG. 7 is a plan view of the + terminal 7 of FIG. 6;
【図８】従来の円筒密閉型電池の斜視図である。FIG. 8 is a perspective view of a conventional cylindrical sealed battery.
【図９】図８の電池における正極板の端縁部と＋タ−ミ
ナルの中間集電体部との接続状態を示す径方向部分断面
図である。9 is a partial radial sectional view showing a connection state between an edge portion of a positive electrode plate and a + terminal intermediate current collector portion in the battery of FIG. 8;
１はケ−ス、 ５は電極アセンブリ、 ６は正極板、 ７は＋タ−ミナル、 ６１は正極板６の正側の端縁部 ６２は正極板６の耳部 ７１は＋タ−ミナル７の中間集電体部（中間集電体） ７２は＋タ−ミナル７の正極端子部 ７３は中間集電体部７１の溝部（溶接用スリット） 1 is a case, 5 is an electrode assembly, 6 is a positive electrode plate, 7 is a + terminal, 61 is a positive edge of the positive electrode plate 62 is a lug 71 of the positive electrode plate 71 is a + terminal 7 72 is a positive terminal portion of the + terminal 7 73 is a groove (a welding slit) of the intermediate current collector portion 71
Claims (6)
略径方向に延設した中間集電体を前記極板の端縁部に溶
接し、前記中間集電体を通じて前記極板の端縁部を電極
端子に接続する円筒密閉型電池の製造方法において、 厚さ方向に貫通する溶接用スリットを前記中間集電体に
形成し、前記溶接用スリットに前記極板の端縁部を嵌挿
し、前記中間集電体の反極板側から溶接エネルギ−を供
給して、前記極板の端縁部を前記中間集電体に溶接する
ことを特徴とする円筒密閉型電池の製造方法。An intermediate current collector extending substantially radially along an edge of a spirally formed electrode plate is welded to an edge of the electrode plate, and the intermediate current collector is passed through the intermediate current collector. In a method for manufacturing a cylindrical sealed battery in which an edge portion of an electrode plate is connected to an electrode terminal, a welding slit penetrating in a thickness direction is formed in the intermediate current collector, and an edge of the electrode plate is formed in the welding slit. A cylindrical sealed battery, wherein an edge is inserted, welding energy is supplied from the opposite electrode side of the intermediate current collector, and an edge of the electrode plate is welded to the intermediate current collector. Manufacturing method.
において、 前記溶接はレ−ザ−溶接によりなされることを特徴とす
る円筒密閉型電池の製造方法。2. The method for manufacturing a sealed cylindrical battery according to claim 1, wherein said welding is performed by laser welding.
において、 円筒缶形状のケ−スから外部に突出する電極端子と前記
中間集電体とを、同一素材からの加工により一体に形成
することを特徴とする円筒密閉型電池の製造方法。3. The method for manufacturing a sealed cylindrical battery according to claim 1, wherein the electrode terminal protruding outside from a cylindrical can-shaped case and the intermediate current collector are integrally formed by processing from the same material. A method for producing a cylindrical sealed battery, characterized by being formed.
において、 前記極板の端縁部各部は略周方向に所定幅を有して径方
向に束ねられつつ軸方向へ突出する耳部を有し、 前記中間集電体は、前記耳部が櫛歯間に嵌挿される櫛形
の形状を有することを特徴とする円筒密閉型電池の製造
方法。4. The method for manufacturing a cylindrical sealed battery according to claim 1, wherein each end portion of said electrode plate has a predetermined width in a substantially circumferential direction and is radially bundled and protrudes in an axial direction. A method for manufacturing a sealed cylindrical battery, wherein the intermediate current collector has a comb-like shape in which the ears are inserted between comb teeth.
において、 複数の前記耳部が一対の前記櫛歯間に嵌挿されることを
特徴とする円筒密閉型電池の製造方法。5. The method for manufacturing a sealed cylindrical battery according to claim 3, wherein the plurality of ears are inserted between a pair of the comb teeth.
において、 前記溶接用スリットは、渦巻状に形成されることを特徴
とする円筒密閉型電池の製造方法。6. The method according to claim 1, wherein the welding slit is formed in a spiral shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9148803A JPH10340737A (en) | 1997-06-06 | 1997-06-06 | Manufacture of cylindrical closed-type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9148803A JPH10340737A (en) | 1997-06-06 | 1997-06-06 | Manufacture of cylindrical closed-type battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10340737A true JPH10340737A (en) | 1998-12-22 |
Family
ID=15461065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9148803A Pending JPH10340737A (en) | 1997-06-06 | 1997-06-06 | Manufacture of cylindrical closed-type battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10340737A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6653013B2 (en) | 2000-11-17 | 2003-11-25 | Japan Storage Battery Co., Ltd. | Current collecting lugs in a cylindrical battery |
| WO2005117196A1 (en) * | 2004-05-26 | 2005-12-08 | CHUNG, Hai | Winding type dynamical type lithium-ion. secondary battery |
| KR100709884B1 (en) | 2005-09-23 | 2007-04-20 | 삼성에스디아이 주식회사 | A rectangular rechargeable battery |
| KR101361193B1 (en) * | 2007-04-25 | 2014-02-11 | 삼성에스디아이 주식회사 | Secondary battery |
| CN115051120A (en) * | 2021-03-09 | 2022-09-13 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method and manufacturing system thereof, battery and electric equipment |
| WO2022210138A1 (en) * | 2021-03-30 | 2022-10-06 | パナソニックＩｐマネジメント株式会社 | Power storage device |
| US11955665B2 (en) | 2019-11-01 | 2024-04-09 | Lg Energy Solution, Ltd. | Secondary battery and method for manufacturing the same |
-
1997
- 1997-06-06 JP JP9148803A patent/JPH10340737A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6653013B2 (en) | 2000-11-17 | 2003-11-25 | Japan Storage Battery Co., Ltd. | Current collecting lugs in a cylindrical battery |
| WO2005117196A1 (en) * | 2004-05-26 | 2005-12-08 | CHUNG, Hai | Winding type dynamical type lithium-ion. secondary battery |
| KR100709884B1 (en) | 2005-09-23 | 2007-04-20 | 삼성에스디아이 주식회사 | A rectangular rechargeable battery |
| KR101361193B1 (en) * | 2007-04-25 | 2014-02-11 | 삼성에스디아이 주식회사 | Secondary battery |
| US11955665B2 (en) | 2019-11-01 | 2024-04-09 | Lg Energy Solution, Ltd. | Secondary battery and method for manufacturing the same |
| CN115051120A (en) * | 2021-03-09 | 2022-09-13 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method and manufacturing system thereof, battery and electric equipment |
| WO2022188484A1 (en) * | 2021-03-09 | 2022-09-15 | 宁德时代新能源科技股份有限公司 | Battery cell and manufacturing method and manufacturing system therefor, battery, and powered device |
| CN115051120B (en) * | 2021-03-09 | 2024-05-28 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method and manufacturing system thereof, battery and electric equipment |
| WO2022210138A1 (en) * | 2021-03-30 | 2022-10-06 | パナソニックＩｐマネジメント株式会社 | Power storage device |
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