JPS63108676A - Cylindrical battery - Google Patents
Cylindrical batteryInfo
- Publication number
- JPS63108676A JPS63108676A JP61252863A JP25286386A JPS63108676A JP S63108676 A JPS63108676 A JP S63108676A JP 61252863 A JP61252863 A JP 61252863A JP 25286386 A JP25286386 A JP 25286386A JP S63108676 A JPS63108676 A JP S63108676A
- Authority
- JP
- Japan
- Prior art keywords
- sealing plate
- current collector
- current collecting
- rod
- collecting rod
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000011810 insulating material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 150000002739 metals Chemical class 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/10—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with wound or folded electrodes
-
- 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
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
-
- 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
- H01M50/543—Terminals
- H01M50/562—Terminals characterised by the material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Primary Cells (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、円筒形電池に関し、特に電極端子の導電接続
を改良した円筒形電池に係わるものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cylindrical battery, and more particularly to a cylindrical battery with improved conductive connections of electrode terminals.
［従来の技術］
本出願人は、有底円筒形の容器内に、巻回芯体を兼ねた
１！電棒を中心して巻回した電極群を収納し、かつ前記
容器の開口部に絶縁材を介して封口板を密封配置すると
共に、前記集電棒の上端を前記封口板に圧接して導電接
続した構造の円筒形電池において、集電棒下端に配置し
た合成樹脂製絶縁板の弾性力により該集電棒上端を前記
封口板に圧接し、導電接続した円筒形電池（実願昭６０
−１７１９１４号）、並びに前記封口板の中央付近にコ
テ形の突起部を形成し、この突起部内に前記集電棒の上
端部を圧入して導電接続した円筒形電池（実願昭６１−
２５１５７号）を夫々既に提案した。[Prior Art] The present applicant has developed a 1! which also serves as a winding core in a cylindrical container with a bottom. A structure in which a group of electrodes wound around an electric rod is housed, a sealing plate is hermetically arranged in the opening of the container via an insulating material, and the upper end of the current collector rod is electrically connected by being pressed into contact with the sealing plate. In this cylindrical battery, the upper end of the current collector rod is pressed against the sealing plate by the elastic force of a synthetic resin insulating plate placed at the lower end of the current collector rod, and the cylindrical battery is conductively connected.
-171914), as well as a cylindrical battery in which a trowel-shaped protrusion is formed near the center of the sealing plate, and the upper end of the current collector rod is press-fitted into the protrusion for conductive connection (Utility Application No. 171914).
No. 25157) have already been proposed.
［発明が解決しようとする問題点］
しかしながら、前者の電池では集電棒の上端面と封口板
の上部内面、後者の電池では集電棒の上端側面と封口板
の突起部内側面、といずれも面同志の圧接である。その
結果、同じ圧接力でも単位面積当りの圧力が小さくなる
ため、接触抵抗を充分に小さくできない問題があった。[Problems to be Solved by the Invention] However, in the former battery, the upper end surface of the current collector rod and the upper inner surface of the sealing plate, and in the latter battery, the upper end surface of the current collector rod and the inner surface of the protrusion of the sealing plate are all flush with each other. This is pressure welding. As a result, even with the same pressing force, the pressure per unit area becomes smaller, so there is a problem that the contact resistance cannot be made sufficiently small.
また、圧接力を大きくすると、容器等の圧力を支える部
位に変形が生じたり、特に後者の電池では突起部が変形
したりして信頼性を著しく損う問題があった。In addition, when the pressure contact force is increased, there is a problem that deformation occurs in the pressure-supporting portion of the container or the like, and especially in the case of the latter battery, the protrusion portion is deformed, which significantly impairs reliability.
本発明は、上記従来の問題点を解決するためになされた
もので、小さい圧接力で集電棒と封口板とを充分に小さ
い接触抵抗で導電接続することが可能な円筒形電池を提
供しようとするものである。The present invention has been made in order to solve the above-mentioned conventional problems, and aims to provide a cylindrical battery that can conductively connect a current collector rod and a sealing plate with a sufficiently low contact resistance using a small pressure contact force. It is something to do.
［問題点を解決するための手段］
本発明は、有底円筒形の容器内に、巻回芯体を兼ねた集
電棒を中心として巻回した電極群を収納し、かつ前記容
器の開口部に絶縁材を介して封口板を密封配置すると共
に、前記集電棒の上端を前記封口板に圧接して導電接続
した構造の円筒形電池において、前記封口板の中央付近
に断面台形状の突出部を形成し、該突出部の傾斜した内
面に前記ｍｌ棒の上端部外周縁を圧接させて導電接続し
たことを特徴とする円筒形電池である。[Means for Solving the Problems] The present invention stores an electrode group wound around a current collector rod which also serves as a winding core in a cylindrical container with a bottom, and an opening of the container. In a cylindrical battery having a structure in which a sealing plate is disposed in a sealed manner through an insulating material, and the upper end of the current collector rod is electrically connected to the sealing plate by pressure contact, a protrusion having a trapezoidal cross section is provided near the center of the sealing plate. The cylindrical battery is characterized in that the outer periphery of the upper end of the ml rod is electrically connected to the slanted inner surface of the protrusion by being pressed into contact with the slanted inner surface of the protrusion.
［作用］
本発明によれば、封口板の中央付近に断面台形状の突出
部を形成し、該突出部の傾斜した内面に前記集電棒の上
端部外周縁を圧接させることによって、前記突出部の傾
斜した内面と前記集電棒の上端部外周縁が互いに擦れ合
って夫々の面に生成された酸化膜が除去され、集電棒、
封口板の構成金属そのもの同志の接触となるため、小さ
い圧接力により集電棒と封口板とを充分に小さい接触抵
抗で導電接続することが可能となる。[Function] According to the present invention, a protrusion having a trapezoidal cross section is formed near the center of the sealing plate, and the outer periphery of the upper end of the current collector rod is brought into pressure contact with the inclined inner surface of the protrusion. The slanted inner surface of the current collector rod and the outer periphery of the upper end of the current collector rod rub against each other, and the oxide film generated on each surface is removed, and the current collector rod,
Since the constituent metals of the sealing plate themselves are in contact with each other, it is possible to conductively connect the current collecting rod and the sealing plate with a sufficiently small contact resistance using a small pressure contact force.
［発明の実施例］
以下、本発明の実施例を図面を参照して詳細に説明する
。[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
図中の１は、一方の端子（負極端子）を兼ねる有底円筒
形のステンレス製容器である。この容器１内には、巻回
芯体を兼ねる他方の極性としてのステンレス製の正極集
電棒２に巻回された電極群３が収納されている。この電
極群３は、例えば前記集電棒２に帯状の正慟板４の一端
をスポット溶接した後、帯状のセパレータ５、負極とし
ての金属リチウム板６を重ね、渦巻き状に巻回すること
により作製した。なお、前記電極群３の底部側の前記容
器内面には合成樹脂からなる絶縁板７が配置されている
。前記容器１内には、非水電解液が収容されている。前
記容器１の開口部には、絶縁リング８が液密に配設され
ており、かつ該絶縁リング８には端子板を兼ねるステン
レス製の封口板９の外周縁が埋め込まれている。そして
、前記封口板９の中央には断面台形状の突出部１０が形
成されており、かつ該突出部１０の傾斜した内面には前
記集電棒２の上端外周縁が圧接して導電接続されている
。1 in the figure is a cylindrical stainless steel container with a bottom that also serves as one terminal (negative electrode terminal). This container 1 houses an electrode group 3 wound around a stainless steel positive electrode current collector rod 2 of the other polarity which also serves as a wound core. This electrode group 3 is fabricated, for example, by spot-welding one end of a band-shaped positive electrode plate 4 to the current collector rod 2, overlapping a band-shaped separator 5 and a metal lithium plate 6 as a negative electrode, and winding the plate in a spiral shape. did. Note that an insulating plate 7 made of synthetic resin is arranged on the inner surface of the container on the bottom side of the electrode group 3. The container 1 contains a non-aqueous electrolyte. An insulating ring 8 is disposed in a liquid-tight manner at the opening of the container 1, and the outer peripheral edge of a stainless steel sealing plate 9, which also serves as a terminal plate, is embedded in the insulating ring 8. A protruding part 10 having a trapezoidal cross section is formed in the center of the sealing plate 9, and the outer peripheral edge of the upper end of the current collecting rod 2 is pressed into contact with the inclined inner surface of the protruding part 10 and is electrically connected. There is.
このような構成によれば、絶縁リング８に固定された封
口板９の中央には断面台形状の突出部１０が形成され、
該突出部１０の傾斜した内面には電極群３を巻回した集
電棒歩の上端部外周縁が圧接させるため、前記突出部１
０の傾斜した内面と前記集電棒２の上端部外周縁が互い
に擦れ合って夫々の面に生成された酸化膜が除去され、
集電棒２、封口板９の構成金属（ステンレス）そのもの
同志の接触となる。従って、小さい圧接力により集電棒
２と封口板９とを充分に小さい接触抵抗で導電接続でき
るため、容器１等の変形のない高信頼性の円筒形電池を
得ることができる。According to such a configuration, a protrusion 10 having a trapezoidal cross section is formed at the center of the sealing plate 9 fixed to the insulating ring 8.
Since the outer peripheral edge of the upper end of the current collector rod around which the electrode group 3 is wound is brought into pressure contact with the inclined inner surface of the protrusion 10, the protrusion 1
The slanted inner surface of the current collector rod 2 and the outer periphery of the upper end of the current collector rod 2 rub against each other, and the oxide film formed on each surface is removed.
The constituent metals (stainless steel) of the current collecting rod 2 and the sealing plate 9 are in contact with each other. Therefore, since the current collecting rod 2 and the sealing plate 9 can be electrically connected with a sufficiently small contact resistance by using a small pressure contact force, a highly reliable cylindrical battery without deformation of the container 1 etc. can be obtained.
［発明の効果］
以上詳述した如く、本発明によれば小さい圧接力で集電
棒と封口板とを充分に小さい接触抵抗で導電接続された
高信頼性の円筒形電池を提供できる。[Effects of the Invention] As detailed above, according to the present invention, it is possible to provide a highly reliable cylindrical battery in which the current collector rod and the sealing plate are conductively connected with a sufficiently low contact resistance with a small pressing force.
図面は、本発明の一実論例を示す円筒形電池の断面図で
ある。
１・・・容器、２・・・集電棒、３・・・電極群、９・
・・封口板、１０・・・突出部。The drawing is a cross-sectional view of a cylindrical battery illustrating a practical example of the invention. DESCRIPTION OF SYMBOLS 1... Container, 2... Current collector rod, 3... Electrode group, 9...
... Sealing plate, 10... Protruding part.
Claims (1)
として巻回した電極群を収納し、かつ前記容器の開口部
に絶縁材を介して封口板を密封配置すると共に、前記集
電棒の上端を前記封口板に圧接して導電接続した構造の
円筒形電池において、前記封口板の中央付近に断面台形
状の突出部を形成し、該突出部の傾斜した内面に前記集
電棒の上端部外周縁を圧接させて導電接続したことを特
徴とする円筒形電池。In a cylindrical container with a bottom, an electrode group wound around a current collector rod which also serves as a wound core is housed, and a sealing plate is hermetically arranged in the opening of the container via an insulating material, In a cylindrical battery having a structure in which the upper end of the current collector rod is pressed against the sealing plate for conductive connection, a protrusion having a trapezoidal cross section is formed near the center of the sealing plate, and the collector is formed on the inclined inner surface of the protrusion. A cylindrical battery characterized by a conductive connection made by press-contacting the outer periphery of the upper end of an electric rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61252863A JPS63108676A (en) | 1986-10-24 | 1986-10-24 | Cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61252863A JPS63108676A (en) | 1986-10-24 | 1986-10-24 | Cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63108676A true JPS63108676A (en) | 1988-05-13 |
Family
ID=17243212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61252863A Pending JPS63108676A (en) | 1986-10-24 | 1986-10-24 | Cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63108676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168663B1 (en) | 1995-06-07 | 2001-01-02 | Eamon P. McDonald | Thin sheet handling system cross-reference to related applications |
| JP2010097732A (en) * | 2008-10-14 | 2010-04-30 | Toyota Motor Corp | Terminal member and method of manufacturing terminal member |
-
1986
- 1986-10-24 JP JP61252863A patent/JPS63108676A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168663B1 (en) | 1995-06-07 | 2001-01-02 | Eamon P. McDonald | Thin sheet handling system cross-reference to related applications |
| JP2010097732A (en) * | 2008-10-14 | 2010-04-30 | Toyota Motor Corp | Terminal member and method of manufacturing terminal member |
| JP4710954B2 (en) * | 2008-10-14 | 2011-06-29 | トヨタ自動車株式会社 | Terminal member and method of manufacturing terminal member |
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