JPS60105165A - Manufacture of battery having wound electrode - Google Patents
Manufacture of battery having wound electrodeInfo
- Publication number
- JPS60105165A JPS60105165A JP58212704A JP21270483A JPS60105165A JP S60105165 A JPS60105165 A JP S60105165A JP 58212704 A JP58212704 A JP 58212704A JP 21270483 A JP21270483 A JP 21270483A JP S60105165 A JPS60105165 A JP S60105165A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- current collector
- electrode
- electrodes
- positive
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、渦巻電極体を備えた電池の製造法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a battery with a spiral electrode body.
従来例の構成とその問題点
渦巻電極体を備えた電池の代表例である密閉形ニッケル
・カドミウム蓄電池において、正極又は負極からの集電
方法は通常法のようにして行なわれている。その一つは
第１図に示すように、正極９の中央部から正極り−ド１
０を取り出し、負極１１も同様に負極リード１２を取り
出して、正極り一部１０は正極端子を兼ねるキャップ１
３と電気的導通を有する封口板１４に、又負極リード１
２は負極端子を兼ねる電池容器１５に各々溶接によって
固定したものである。この構造でｌ−１：１本のリード
ｆ：通して極板の１ケ所から電流が流ねるため、強負荷
０１時の電圧降下が大きくなり、電池の出力が低下する
という欠点を有していた。そこで前記の欠点を改良する
方法として第２図に示すように、正極１６、負極１７の
極端として各々の極板を構成する導電性芯材の一部を突
出σせて、これを正極突出部１８、負椿突１１ｆ ｇｌ
＋ １９とし、この突出部上に第３図のＡ、Ｈに示すご
とくの集電体２０を当接させ、溶接により突出部と集電
体とを固定するものが提案きれた。第２図で２０は前記
の正極集電体、２１は同構成の負極集電体で、各々その
集電体の一部が封口板２２および電池容器２３に溶接に
よシ固定される。第３図の集電体でＡの構造の場合、１
対の溶接電極が、それぞれ二股に分かれた脚部２０’上
におかれて溶接されるだめ、溶接時の電流は二股に分か
れた脚部２０’上を流れる電流（溶接時の無効電流）が
大きくなり、集電体から芯材突出部に流れる電流は小は
くなって、溶接強度は低くなる。また集電体自体の形状
を断面逆Ｕ字状の脚をもつ二股に加工するため、加工が
複雑となり、コスト的にも高くなる。Conventional Structure and Problems In a sealed nickel-cadmium storage battery, which is a typical example of a battery equipped with a spiral electrode body, current is collected from the positive or negative electrode in a conventional manner. One of them is as shown in FIG.
0, take out the negative electrode lead 12 of the negative electrode 11 in the same way, and connect the positive electrode part 10 to the cap 1 which also serves as the positive electrode terminal.
3 and the sealing plate 14 having electrical continuity with the negative electrode lead 1.
2 are each fixed by welding to a battery container 15 which also serves as a negative electrode terminal. With this structure, current flows from one place on the electrode plate through the l-1:1 lead f:, which has the disadvantage that the voltage drop during heavy loads increases and the battery output decreases. Ta. Therefore, as a method to improve the above-mentioned drawbacks, as shown in FIG. 18, Netsubakitsu 11f gl
+19, a current collector 20 as shown in A and H in FIG. 3 is brought into contact with this protrusion, and the protrusion and the current collector are fixed by welding. In FIG. 2, reference numeral 20 denotes the above-mentioned positive electrode current collector, and 21 denotes a negative electrode current collector having the same structure. Parts of each of the current collectors are fixed to the sealing plate 22 and the battery container 23 by welding. In the case of structure A in the current collector shown in Figure 3, 1
Since the pair of welding electrodes are placed on each of the forked leg parts 20' for welding, the current during welding is the current flowing on the forked leg parts 20' (reactive current during welding). As the current becomes larger, the current flowing from the current collector to the protrusion of the core material becomes smaller, and the welding strength becomes lower. Furthermore, since the shape of the current collector itself is processed into a bifurcated shape with legs having an inverted U-shaped cross section, the processing becomes complicated and the cost becomes high.
第３図のＢに示す構造ｕＡに比べて集電体がエキスパン
デッドメタルのような凸ｉ’ｉｌ（を有する開孔体であ
るため、溶接時の無効電流が少なく、従って溶接強度は
比較的太であるが、その反面、開孔体の凸部を主体に溶
接てれるため、人よりは溶接強度が強いがまだ不十分で
ある。また集電体自体にエキスパンデッドメタル、パリ
を有するパンチングメタルやネットのごとき比較的高価
な材料を使用するため、コスト的に高くなるという欠点
があった。そこで前記第３図のＡ、Ｂに示す集電体に代
って安価な集電体として平板状を用い、かつ溶接時に集
電体を溶断する方法が提案てれた（特開昭５６−６７１
６６号）。第４図にその一例を示す。Compared to the structure uA shown in Fig. 3B, the current collector is a perforated body with a convex i'il (like an expanded metal), so the reactive current during welding is small, and the welding strength is therefore comparatively low. However, on the other hand, since the convex parts of the open-hole body are mainly welded, the welding strength is stronger than that of humans, but it is still insufficient.Also, the current collector itself is made of expanded metal and Paris. Since relatively expensive materials such as punched metal and net are used, the cost is high.Therefore, in place of the current collectors shown in A and B in Fig. 3, an inexpensive current collector is used. A method was proposed in which a flat plate was used as the body and the current collector was fused during welding (Japanese Patent Laid-Open No. 56-671).
No. 66). An example is shown in FIG.
２４は正極突出部、２５はセパレータ、２６は負極、２
７は正極集電体である。この突出部２４に当接された集
電体２７上に一対の溶接電極を配設し、溶接電流を流す
。なお２８．２８’は一対の溶接電極である。この方法
によると一対の溶接電極間の集電体は赤熱溶融され、部
分的に溶断される。したがって集電体と芯材突出部とは
強固に溶接がなされ、溶接強度は十分なものが得られる
。24 is a positive electrode protrusion, 25 is a separator, 26 is a negative electrode, 2
7 is a positive electrode current collector. A pair of welding electrodes are disposed on the current collector 27 that is in contact with the protrusion 24, and a welding current is applied to the current collector 27. Note that 28 and 28' are a pair of welding electrodes. According to this method, the current collector between a pair of welding electrodes is red-hot melted and partially fused. Therefore, the current collector and the core protrusion are firmly welded, and sufficient welding strength can be obtained.
しかしながらこの方法では溶断された集電体の溶断くず
が正、負極間に介在しやすくなるだめに、電池組立時に
微少短絡が発生しやすくなること、ならびに溶断部を有
することから溶接面積が少なくなり、溶接強度がばらつ
くことなどの欠点があった。However, with this method, the fusing debris of the fused current collector tends to get interposed between the positive and negative electrodes, which makes it easier for minute short circuits to occur during battery assembly, and since there is a fused part, the welding area becomes smaller. However, there were drawbacks such as variations in welding strength.
寸だ、集電体の開孔部を介して対向してなる一対の溶接
電極を用いて集電体を各突出部に溶接させる方法におい
て、先端形状が平伏を有する溶接電極では、電流が溶接
電極の鋭端部に集中し、溶接面積は少なくなり溶接強度
が低くなるという欠点があった。In a method of welding a current collector to each protrusion using a pair of welding electrodes facing each other through an aperture in the current collector, if the welding electrode has a flattened tip, the current will There was a drawback that the welding was concentrated at the sharp end of the electrode, the welding area was small, and the welding strength was low.
発明の目的
本発明は、上記従来の欠点を克服したもので、電池組立
時に微少短絡を生じることなく、集電体と各種の芯材突
出部との溶接強度の十分な渦巻電極体を提供することを
目的とする。Purpose of the Invention The present invention overcomes the above-mentioned conventional drawbacks, and provides a spiral electrode body that does not cause minute short circuits during battery assembly and has sufficient welding strength between the current collector and various protrusions of the core material. The purpose is to
発明の構成
本発明は、セパレータを間に介在させた帯状の正、負極
をその各極端を上下に突出でせて渦巻状１に巻回した極
板群を備え、中心部に開孔部を有する平板状の集電体を
正、負電極の芯拐突出部に当接させ集電体の開孔部を介
して対向し先端が球状を含む凸形状からなる電極により
前記集電体上から溶接電流を流して、集電体と各種の極
端とを溶接してなる渦巻電極体において、溶接時に加圧
式れた溶接電極当接部の集電体部分乏内側へ凹状に変形
埒ぜ、溶接面ｆｆｔを大きくしたことを特徴とする。こ
れにより溶接強度が高くなり、寸た集電体を溶断させな
いだめ、微少短絡がなくなるものである。Structure of the Invention The present invention comprises a group of electrode plates in which band-shaped positive and negative electrodes with a separator interposed therebetween are wound in a spiral shape with each end thereof protruding upward and downward, and an opening is formed in the center. A flat plate-shaped current collector having a spherical shape is brought into contact with the core protrusions of the positive and negative electrodes, and an electrode having a convex shape with a spherical tip faces the current collector through the opening of the current collector. In a spiral electrode body made by welding a current collector and various ends by applying a welding current, the current collector part of the welding electrode contact area that is pressurized during welding is deformed in a concave shape inward, and welding is performed. It is characterized by a large surface fft. This increases the welding strength and eliminates minute short circuits, which prevent the small current collector from fusing.
実施例の説明
以下本発明の一実施例を図面を参照して説明する。第６
図は極板群の上下における集電体の当接状況を示し、１
は正極芯利突出部、２はセパレータ、３は負極芯材突出
部、４は負極、５ｉｄ正極集電体、６は負極集電体、７
は群外周固定テープ、８は集電体の開孔部、９は正極で
ある。こねらにより渦巻電極体を構成している。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 6th
The figure shows the state of contact between the current collectors above and below the electrode plate group.
is a positive electrode core protrusion, 2 is a separator, 3 is a negative electrode core protrusion, 4 is a negative electrode, 5id positive electrode current collector, 6 is a negative electrode current collector, 7
8 is an aperture of the current collector; 9 is a positive electrode; A spiral electrode body is formed by the kneads.
具体的には厚さ０．５ｎｌＨの焼結式ニッケル正極９と
、厚さ０，５ｉｆｆのペースト式カドミウム負極４を用
い、それぞれの極端の一方に芯材突出部１．３を設け、
芯材突出部が各々上下に突するようにセパレータ２を間
に介在はせて、この正、負極板を渦巻状に巻回する。巻
回式れた極板群の外周は粘着性かっ血１アルカリ性の合
成樹脂テープ７で固定する。この極板群の上下に厚さ０
．５７１１Ｗ以下、好捷しくけ０．２ｍｍの平板状のニ
ッケルめっき鋼板からなる集電体５．６を当接する。と
の集電体の開孔部を介して対向する先端がＲ形状を有す
る一対の溶接電極Ｗを配設し、加圧のもとに溶接電流を
流す。Specifically, a sintered nickel positive electrode 9 with a thickness of 0.5nlH and a paste-type cadmium negative electrode 4 with a thickness of 0.5iff are used, and a core protrusion 1.3 is provided at one of the extremes of each.
The positive and negative electrode plates are spirally wound with the separator 2 interposed between them so that the core protrusions project upward and downward. The outer periphery of the wound electrode plate group is fixed with adhesive tape 1 and alkaline synthetic resin tape 7. There is a thickness of 0 above and below this electrode group.
．． A current collector 5.6 made of a flat nickel-plated steel plate with a power of 5711 W or less and a diameter of 0.2 mm is brought into contact. A pair of welding electrodes W having rounded tips facing each other through the aperture of the current collector are disposed, and a welding current is passed under pressure.
この方法で溶接された部分は集電体、芯材突出部の両方
が溶接電極Ｗの先端形状に応じたＲ形状に内側へ溶融、
変形し、溶接面積が広くなり溶接強度は高くなる。第６
図は溶接型４ｉｆｘ Ｗと、溶接後の極板群の断面形状
を示す。又第７図に溶接電極の先端形状Ｒと溶接の引張
り強度との関係を示す。In the part welded by this method, both the current collector and the core protrusion melt inward into an R shape that corresponds to the tip shape of the welding electrode W.
It deforms, the weld area becomes wider, and the weld strength increases. 6th
The figure shows the welding type 4ifx W and the cross-sectional shape of the electrode plate group after welding. Further, FIG. 7 shows the relationship between the tip shape R of the welding electrode and the tensile strength of welding.
発明の詳細
な説明したように不発ψｌの渦巻電極体を備えた電池の
製造法では集電体と芯材突出部との溶接面積が広くなり
、溶接強度が高くなる。まだ集電体が溶断されないため
、溶断くずによる微少短絡がなくなる。嘔らに集電体が
平板形状なので加工が単純でコスト的に安価である。As described in detail of the invention, in the method of manufacturing a battery equipped with a spiral electrode body of non-explosion ψl, the welding area between the current collector and the protrusion of the core material becomes large, and the welding strength becomes high. Since the current collector is not yet fused, there will be no slight short circuit caused by fused debris. Moreover, since the current collector has a flat plate shape, processing is simple and the cost is low.
第１図、第２図はこれ寸での渦巻電極体を備えだ電池の
半断面図、第３図Ａ、Ｂは従来用いられていた集電体を
示す斜視図、第４図は従来の集電体を一対の溶接電極に
より電極の極端に溶接する際の斜視図、第５図は本発明
の製造法における極板群極端における集電体の当接状態
を示す斜視図第６図は本発明の実施例における溶接電極
及び溶接後の渦巻状極板群を示す断面図、第７図は溶接
電極先端のＲ形状と引張強度との関係を示す図である。
１・・・・・・正極芯材突出部、２・・・セパレータ、
３・・・・・・負極芯材突出部、４・・・・・・負極、
５・・・・・正極集電体、６・・・・・・負極集電体、
８・・・・・・集電体の開孔部、９・・・・・・正極、
Ｗ・・・・・・溶接電極。
代理人の氏名 弁理士 中 尾 敏 男 ほか１化第を
図 第２図
（Ａ） （８）
第４図 ＠５図Figures 1 and 2 are half-sectional views of a battery equipped with a spiral electrode body of this size, Figures 3A and B are perspective views showing a conventionally used current collector, and Figure 4 is a half-sectional view of a battery equipped with a spiral electrode body of this size. FIG. 5 is a perspective view of a current collector being welded to the extreme end of the electrode by a pair of welding electrodes. FIG. FIG. 7 is a cross-sectional view showing a welding electrode and a spiral electrode plate group after welding in an embodiment of the present invention, and FIG. 7 is a diagram showing the relationship between the R shape of the tip of the welding electrode and the tensile strength. 1... Positive electrode core material protrusion, 2... Separator,
3... Negative electrode core material protrusion, 4... Negative electrode,
5... Positive electrode current collector, 6... Negative electrode current collector,
8...Opening part of current collector, 9...Positive electrode,
W...Welding electrode. Name of agent Patent attorney Toshio Nakao et al. Figure 2 (A) (8) Figure 4 @ Figure 5
Claims (2)
の各極端を上下に突出させて渦巻状に巻回した極板群を
備え、中心部に開孔８１３を有する平板状の集電体を正
、負電極の極端に当接でせ、集電体の開孔部を介して対
向してなる一対の溶接電極により前記集電体上から溶接
電流を流して、集電体と電極の極端とを溶接してなる渦
巻電極体を備えた電池の製造法であって、溶接時に加圧
された溶接電極当接部の集電体部分を凹状に内側へ変形
させることを！１冒改とする渦巻電極体を備えた電池の
製造法。(1) A flat current collector with an opening 813 in the center, which is equipped with a group of electrode plates in which band-shaped positive and negative electrodes are spirally wound with each end protruding upward and downward, with a separator interposed between them. The body is brought into contact with the extremes of the positive and negative electrodes, and a welding current is applied from above the current collector using a pair of welding electrodes facing each other through the aperture of the current collector, so that the current collector and the electrodes are connected to each other. A method of manufacturing a battery having a spiral electrode body formed by welding the extreme ends of the electrode body, in which the current collector part of the welding electrode abutting part that is pressurized during welding is deformed inward into a concave shape. 1. A method for manufacturing a battery having a spiral electrode body.
メッキ鋼板からなり、かつ溶接電極の先端が球状を含む
凸形状を有している’ｌ’Ｆ ｉｔ’Ｆ請求の範囲第１
項記載の渦巻電極体を備えた電池の製造法。(2) The flat current collector is made of a nickel-plated steel plate with a thickness of 0511 m or less, and the tip of the welding electrode has a convex shape including a spherical shape.Claim 1
A method for manufacturing a battery equipped with a spiral electrode body as described in 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58212704A JPS60105165A (en) | 1983-11-11 | 1983-11-11 | Manufacture of battery having wound electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58212704A JPS60105165A (en) | 1983-11-11 | 1983-11-11 | Manufacture of battery having wound electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60105165A true JPS60105165A (en) | 1985-06-10 |
Family
ID=16627043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58212704A Pending JPS60105165A (en) | 1983-11-11 | 1983-11-11 | Manufacture of battery having wound electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60105165A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62127667U (en) * | 1986-02-04 | 1987-08-13 | ||
| US7867644B2 (en) * | 2007-01-31 | 2011-01-11 | Hitachi Vehicle Energy, Ltd. | Secondary battery and secondary battery manufacturing method |
| US7989107B2 (en) | 2007-06-11 | 2011-08-02 | Hitachi Vehicle Energy, Ltd. | Lithium-ion secondary battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5667166A (en) * | 1979-11-07 | 1981-06-06 | Matsushita Electric Ind Co Ltd | Manufacture of battery equipped with rolled electrodes |
-
1983
- 1983-11-11 JP JP58212704A patent/JPS60105165A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5667166A (en) * | 1979-11-07 | 1981-06-06 | Matsushita Electric Ind Co Ltd | Manufacture of battery equipped with rolled electrodes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62127667U (en) * | 1986-02-04 | 1987-08-13 | ||
| JPH0312212Y2 (en) * | 1986-02-04 | 1991-03-22 | ||
| US7867644B2 (en) * | 2007-01-31 | 2011-01-11 | Hitachi Vehicle Energy, Ltd. | Secondary battery and secondary battery manufacturing method |
| US7989107B2 (en) | 2007-06-11 | 2011-08-02 | Hitachi Vehicle Energy, Ltd. | Lithium-ion secondary battery |
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