JPS58158858A - Manufacturing method for sealed type battery - Google Patents
Manufacturing method for sealed type batteryInfo
- Publication number
- JPS58158858A JPS58158858A JP57041923A JP4192382A JPS58158858A JP S58158858 A JPS58158858 A JP S58158858A JP 57041923 A JP57041923 A JP 57041923A JP 4192382 A JP4192382 A JP 4192382A JP S58158858 A JPS58158858 A JP S58158858A
- Authority
- JP
- Japan
- Prior art keywords
- battery case
- cover
- welding
- section
- lid
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000003466 welding Methods 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 6
- SOZVEOGRIFZGRO-UHFFFAOYSA-N [Li].ClS(Cl)=O Chemical compound [Li].ClS(Cl)=O SOZVEOGRIFZGRO-UHFFFAOYSA-N 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- NJVHJTQSGGRHGP-UHFFFAOYSA-K [Li].[Al+3].[Cl-].[Cl-].[Cl-] Chemical compound [Li].[Al+3].[Cl-].[Cl-].[Cl-] NJVHJTQSGGRHGP-UHFFFAOYSA-K 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000243 solution 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はハーメチックシールを採用する密閉形電池の製
造法の改良に係シ、電池ケースと蓋との溶接を確実にし
て書間性の向上をはかることを目的とする。−
たとえば塩化チオニル−リチウム電池などのように高度
の密画性が要求される電池では密閉手段としてバー′メ
チツクシールが採用されている。このハーメチックシー
ルの場合、電池ケースと蓋との接合は溶接で行なわれる
が、この溶接に際して継手形状として線絡８図に示すよ
うに電池ケース（４）の開口部先端と蓋（Ｓ）のボディ
ー１１（６）の外周部上端の高さをそろえたヘリ継手が
採用される。ところで、ハーメチックシールの場合、蓋
はガラスまたはセラミックスよ〉なる絶縁部（７）を有
するので、変形による絶縁部（７）の割れを切上するた
め、ボディ一部（６）は強度以上の剛性を有することが
要求され、便用する板材の厚さが電池ケース（４）の材
厚より厚くなっている。その結果、前記のように電池ケ
ース（４）の開口部先端と蓋（５）のボディ一部（６）
の外周部上端の高さをそろえて溶接すると、材厚の薄い
電池ケース（４）の方が早く溶け、充分な溶接強度が得
られず、極端な場合には電池ケース（４）の方ばかシが
溶けて蓋（Ｓ）の方がまったく溶けず溶接ができないこ
とすらある。[Detailed Description of the Invention] The present invention relates to an improvement in the manufacturing method of a sealed battery that employs a hermetic seal, and an object of the present invention is to ensure welding between the battery case and the lid to improve the intercalation property. . - For example, in batteries that require a high degree of image density, such as thionyl chloride-lithium batteries, a bar mesh seal is used as a sealing means. In the case of this hermetic seal, the battery case and the lid are joined by welding. During this welding, the joint shape is such that the tip of the opening of the battery case (4) and the body of the lid (S) are connected as shown in Figure 8. 11 (6) A helical joint with the same height at the top of the outer periphery is adopted. By the way, in the case of a hermetic seal, the lid has an insulating part (7) made of glass or ceramics, so in order to cut out cracks in the insulating part (7) due to deformation, the part of the body (6) has a rigidity that exceeds the strength. Therefore, the thickness of the plate material used for convenience is thicker than that of the battery case (4). As a result, as mentioned above, the tip of the opening of the battery case (4) and the body part (6) of the lid (5)
When welding with the upper edges of the outer periphery aligned, the thinner battery case (4) will melt faster, and sufficient welding strength will not be obtained, and in extreme cases, the battery case (4) will melt faster. There are cases where the S is melted and the lid (S) is not melted at all and cannot be welded.
本発明はそのような事情に照らし、電池ケースと蓋とを
溶接するにあたヤ、電池ケースと蓋との嵌合を電池ケー
スの開口部先端が蓋の外周部上端よシ突出するように行
ない、その状態から溶接を開始する゛ことによって、電
池ケースと蓋との溶接を確実かつ強力にして密封性の高
い電池を提供できるようにしたものである。In light of such circumstances, the present invention has been proposed to weld the battery case and the lid so that the opening end of the battery case protrudes beyond the upper edge of the outer periphery of the lid. By doing so and starting welding from that state, it is possible to securely and strongly weld the battery case and the lid, thereby providing a highly sealed battery.
つぎに本発明の実施例を図面とともに説明する。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の実施例により製造された密閉形電池の
半裁断面図であシ、第２図は第１図に示す電池を製造す
る際の溶接開始前の状態を示す要部拡大断面図である。FIG. 1 is a half-cut cross-sectional view of a sealed battery manufactured according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of essential parts showing the state before welding is started when manufacturing the battery shown in FIG. It is a diagram.
なお第２図においては図面の繁雑化を避けるため後方の
輪郭線は省略されている。Note that in FIG. 2, the rear contour line is omitted to avoid complication of the drawing.
本発明の方法によシミ池を製造するには電池ケースに負
極、セパレータ、隔離紙、正極などを挿入したのち、電
池ケースと蓋とを第２図に示すように電池ケース（４）
の開口部先端が蓋（５）のボディ一部（６）の外周部上
端より突出した状態に嵌合する。To manufacture a stain pond by the method of the present invention, after inserting the negative electrode, separator, isolation paper, positive electrode, etc. into the battery case, the battery case and the lid are assembled into the battery case (4) as shown in FIG.
The end of the opening of the lid (5) is fitted in such a manner that it protrudes from the upper end of the outer peripheral portion of the body part (6) of the lid (5).
そして、その状態からたとえばプラズマアークなどの加
熱手段により加熱して溶接する。そうすると電池ケース
（４）の蓋（５）の上端よシ央出した部分はさきＫｉｌ
けてｌｉ （５）のボディ一部（６）の外周部上端を覆
い、その状態で電池ケース（４）とＩＥ （５）との溶
接が進行して第１図に示すような状態になる。そして電
池ケース（４）の開口部先端がさきに溶けて蓋（５）の
ボディ一部（・）の外周部上部を覆う結果、電池ケース
（４）と蓋（ｉ）との間に多少の隙間があっても先に溶
けた電池ケースの溶融池によシ堀まシ溶接が可能になる
。なお電池ケース（４）の蓋（５）の外周部上端よシ突
出させる量は電池ケース（４）と蓋（５）に入る入熱量
のバランスと電池ケース（４）の厚さとの比により決定
するのが好ましい。Then, from this state, welding is performed by heating using a heating means such as a plasma arc. Then, the part that sticks out from the top of the lid (5) of the battery case (4) will be removed.
Cover the upper edge of the outer periphery of part (6) of the body of li (5), and in this state welding between the battery case (4) and IE (5) progresses until the state shown in Figure 1 is reached. . As a result, the tip of the opening of the battery case (4) melts and covers the upper part of the outer periphery of the body part (.) of the lid (5), resulting in a slight gap between the battery case (4) and the lid (i). Even if there is a gap, welding can be performed by digging into the molten pool of the battery case that melted first. The amount by which the upper edge of the outer periphery of the lid (5) of the battery case (4) protrudes is determined by the balance between the amount of heat input into the battery case (4) and the lid (5) and the ratio of the thickness of the battery case (4). It is preferable to do so.
１８１図は上記のごとき溶接工程を経て製造され良書閉
形電池の半裁断面図であり、（１）ＦｉＩＪチウム、′
よりなる負極で、（２）はガジそ゛繊維不織布よりなる
セパレータであシ、（３）は炭素多孔質成形体よりなる
正極である。（４）は前記の電池ケースで、この電池ケ
ース（４）Ｌステンレス鋼でつくられていて負極端子を
兼ねている。（６）は前記の蓋で、この蓋（５）は。Figure 181 is a half-cut cross-sectional view of a good-quality closed battery manufactured through the welding process described above, in which (1) a negative electrode made of FiIJ lithium, (2) a separator made of a nonwoven fiber fabric, and ( 3) is a positive electrode made of a carbon porous molded body. (4) is the aforementioned battery case, which is made of L stainless steel and also serves as a negative electrode terminal. (6) is the aforementioned lid, and this lid (5) is.
環状で金属製のボディ一部（６）と該ボディ一部（６）
の内周側に位置しその外周面を上記ボディ一部（６）の
が上方に隆起し丸断面形状をしておシ、絶縁部（７）は
ガラスで形成されている。絶縁部（７）の内周側にはあ
らかじめ耐熱ステ／レス鋼製のパイプよシなる正極集電
体（８）が溶着されていて、電解液はこのパイプ状の正
極集電体から注入され、電解液の注入後、この正極集電
体（８）にステ／レス鋼製の細棒を挿入し、その頭部を
上記集電体（８）と溶接して正極端子（９）としている
。そして、ＱＯはセパレータ（２）と同質の材料で構成
された隔離紙である。Annular metal body part (6) and body part (6)
The body portion (6) is located on the inner circumferential side of the body, and its outer circumferential surface is upwardly raised to have a round cross-sectional shape, and the insulating portion (7) is made of glass. A positive electrode current collector (8) in the form of a pipe made of heat-resistant stainless steel is welded in advance to the inner circumferential side of the insulating part (7), and the electrolyte is injected through this pipe-shaped positive electrode current collector. After injecting the electrolyte, a thin stainless steel rod is inserted into the positive electrode current collector (8), and its head is welded to the current collector (8) to form a positive electrode terminal (9). . QO is a separator paper made of the same material as the separator (2).
この電池の電解液としては塩化チオニルに塩化アルミニ
ウムリチウムを溶解させたものが使用され、上記塩化チ
オニルは同時に正極活物質としての作用をはたすもので
ある。なお前記正極（３）はアセチレンブラックに結着
剤としてポリテトラフルオルエチレンを添加して成形し
たものである。The electrolytic solution for this battery is a solution in which lithium aluminum chloride is dissolved in thionyl chloride, and the thionyl chloride also functions as a positive electrode active material. The positive electrode (3) is formed by adding polytetrafluoroethylene as a binder to acetylene black.
つぎの第１表は本発明による場合と従来法すなわち第８
図に示す（ただし、後方の輪郭線は省略）ように電池ケ
ース（４）の開口部先端と１１（６）（Ｄボディ一部（
６）の外周部上端の高さをそろえて溶接したときの不良
発生率を示すものである。電池は上記のごとく塩化チオ
ニルを正極活物質および電解液とし、リチウムを負極活
物質とする直径１０ｍｍの密閉形電池で、電池ケース（
４）の厚さは８ｍｍであり、蓋（５）のボディ一部（６
）の厚さは６ｍｍである。The following Table 1 shows the case according to the present invention and the conventional method, i.e.
As shown in the figure (however, the rear outline is omitted), the tip of the opening of the battery case (4) and 11 (6) (a part of the D body (
6) shows the failure rate when welding is performed with the heights of the upper ends of the outer periphery aligned. As mentioned above, the battery is a sealed battery with a diameter of 10 mm, which uses thionyl chloride as the positive electrode active material and electrolyte, and lithium as the negative electrode active material.
4) has a thickness of 8 mm, and a part of the body (6) of the lid (5) has a thickness of 8 mm.
) has a thickness of 6 mm.
そして本発明の場合は電池ケース（４）と蓋（５）とを
電池ケース（４）の開口部先端が蓋（５）のボディ一部
（６）の外周部上端よｐ ８ ｍｍｍ出出せた状態に嵌
合し溶接を開始している。溶接はプラズマアークを１８
０Ｗで１２秒間通電することによって行なわれ、第１表
に示す不良にはＳ＊が行なえなかったものとＳ＊部分が
容易に剥がれたものの両方が含まれている。In the case of the present invention, the battery case (4) and the lid (5) are arranged so that the tip of the opening of the battery case (4) can protrude from the upper end of the outer periphery of the body part (6) of the lid (5) by 8 mm. It fits properly and welding has started. Welding uses plasma arc 18
This was done by applying current at 0 W for 12 seconds, and the defects shown in Table 1 include both cases in which S* could not be applied and cases in which the S* portion was easily peeled off.
第 １ 表 第１表に示すように本発明の場合は不良発生が少ない。Chapter 1 Table As shown in Table 1, in the case of the present invention, there are fewer defects.
上記実施例では塩化チオニル−リチウム電池の場合を例
にあげ九が、本発明はそれのみに限られるものではなく
、ハーメチックシールを採用するアルカリ電池、有機電
解質電池、さらには塩化チオニル−リチウム電池以外の
非水電解液電池など・の製造にも好適に適用されるもの
である。In the above embodiments, the case of a thionyl chloride-lithium battery is taken as an example, but the present invention is not limited to this, and includes alkaline batteries that employ a hermetic seal, organic electrolyte batteries, and even other than thionyl chloride-lithium batteries. It can also be suitably applied to the production of non-aqueous electrolyte batteries, etc.
第１図は本発明の実施例によシ製造した密閉形電池の半
裁断面図であり、第２図は第１図に示す電池を製造する
際の溶接開始前の状態を示す要部拡大断面図である。第
８図は従来法により電池を製造する際の溶接開始前の状
態を示す要部拡大断面図である。
（４）・・・電池ケース、（５）・・・蓋、（６）・・
・ボディ一部、（７）・・・絶縁部
特許出願人 日立マクセル株式会社７、’ｔ １図FIG. 1 is a half-cut sectional view of a sealed battery manufactured according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of essential parts showing the state before welding is started when manufacturing the battery shown in FIG. 1. It is a diagram. FIG. 8 is an enlarged sectional view of a main part showing a state before welding is started when manufacturing a battery by a conventional method. (4)... Battery case, (5)... Lid, (6)...
・Body part, (7)... Insulation section patent applicant Hitachi Maxell Co., Ltd. 7, 't 1 Figure
Claims (1)
（６）の内周側に位置しその外周面を上記ボディ一部（
６）の内周面に溶着し九ガラスま九はセラ（ツクスよ如
なる絶縁部（７）を有する肇（６）のｌディ一部（６）
の外周部と電池ケース（４）の開口部とを溶接−するに
あた〉、蓋（５）と電池ケース（４）とを電池ケース（
４）の開口部先端が蓋（！＆）のボディ一部（６）の外
周部上端よシ央出し良状態に嵌合してＩＩＩすることを
特徴とする密閉形電池の製造法。An ill-shaped metal body part (6) is located on the inner circumferential side of the cylindrical body part (6), and its outer circumferential surface is connected to the body part (6).
6) The l-di part (6) of the arm (6) has an insulating part (7) similar to a cera (tux) which is welded to the inner circumferential surface of the glass plate (6).
Before welding the outer periphery of the battery case (4) to the opening of the battery case (4), weld the lid (5) and the battery case (4) to the battery case (4).
4) A method for manufacturing a sealed battery, characterized in that the tip of the opening in step 3 is fitted with the upper end of the outer periphery of the body part (6) of the lid (!&) in a well-centered state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57041923A JPS58158858A (en) | 1982-03-17 | 1982-03-17 | Manufacturing method for sealed type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57041923A JPS58158858A (en) | 1982-03-17 | 1982-03-17 | Manufacturing method for sealed type battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58158858A true JPS58158858A (en) | 1983-09-21 |
| JPH0524622B2 JPH0524622B2 (en) | 1993-04-08 |
Family
ID=12621761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57041923A Granted JPS58158858A (en) | 1982-03-17 | 1982-03-17 | Manufacturing method for sealed type battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58158858A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005029611A1 (en) * | 2003-09-19 | 2005-03-31 | Korea Power Cell Inc. | Lithium ion secondary battery |
| JP2011228409A (en) * | 2010-04-16 | 2011-11-10 | Seiko Instruments Inc | Electrochemical cell and method for manufacturing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56107470A (en) * | 1980-01-30 | 1981-08-26 | Sanyo Electric Co Ltd | Battery |
-
1982
- 1982-03-17 JP JP57041923A patent/JPS58158858A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56107470A (en) * | 1980-01-30 | 1981-08-26 | Sanyo Electric Co Ltd | Battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005029611A1 (en) * | 2003-09-19 | 2005-03-31 | Korea Power Cell Inc. | Lithium ion secondary battery |
| JP2007506241A (en) * | 2003-09-19 | 2007-03-15 | コリア パワー セル インコーポレイティッド | Lithium ion secondary battery |
| US7998613B2 (en) | 2003-09-19 | 2011-08-16 | Korea Power Cell Inc. | Lithium ion secondary battery having enhanced weldability and sealing capability |
| JP2011228409A (en) * | 2010-04-16 | 2011-11-10 | Seiko Instruments Inc | Electrochemical cell and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0524622B2 (en) | 1993-04-08 |
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