JPS60211775A - Manufacture of non-aqueous electrolyte battery - Google Patents
Manufacture of non-aqueous electrolyte batteryInfo
- Publication number
- JPS60211775A JPS60211775A JP59066648A JP6664884A JPS60211775A JP S60211775 A JPS60211775 A JP S60211775A JP 59066648 A JP59066648 A JP 59066648A JP 6664884 A JP6664884 A JP 6664884A JP S60211775 A JPS60211775 A JP S60211775A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- metal plate
- negative electrode
- cylindrical
- negative metal
- 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
-
- 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
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/16—Cells with non-aqueous electrolyte with organic electrolyte
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
- H01M50/469—Separators, membranes or diaphragms characterised by their shape tubular or cylindrical
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】
この発明は、外周にセパレータを巻いた円筒状負極を円
筒状正極の孔内に挿入する構造の非水電解液電池の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a non-aqueous electrolyte battery having a structure in which a cylindrical negative electrode with a separator wrapped around its outer periphery is inserted into a hole in a cylindrical positive electrode.
周知のように筒形の非水電解液電池は、円筒状負極を用
いるインサイドアウト型と称される構造を採用したもの
が多い。この種の非水電解液電池の従来の代表的な構造
を第１図に示し′Ｃいる。この電池では、正極端子を兼
ねる円筒形の電池ケース１２内に円筒状負極１４．セパ
レータ１６２円筒状正極１８からなる発電要素が中心か
らこの順に同軸上に配置され、また円筒状負極１４の中
空部１４ａ内に非水電解液２２が注液されている。As is well known, many cylindrical nonaqueous electrolyte batteries employ a so-called inside-out structure that uses a cylindrical negative electrode. A typical conventional structure of this type of non-aqueous electrolyte battery is shown in FIG. In this battery, a cylindrical negative electrode 14. A power generation element consisting of a separator 162 and a cylindrical positive electrode 18 is arranged coaxially in this order from the center, and a non-aqueous electrolyte 22 is poured into the hollow portion 14a of the cylindrical negative electrode 14.
電池ケース１２の開口端部は、皿状に形成された負極端
子板２６と、この負極端子板２６の内側にあてがわれた
金属薄板３０と、これらの周囲に嵌着するガスケット２
８とによって封目されている。The open end of the battery case 12 has a negative terminal plate 26 formed in a dish shape, a thin metal plate 30 applied to the inside of the negative terminal plate 26, and a gasket 2 fitted around these.
It is sealed by 8.
なお、負極端子板２６にはガス抜孔２６ｂを伴って切り
起こし形成された切刃片２６ａが設けられており、この
切刃片２６ａの先端が金属薄板３０の中央部に突出して
いる。これは電池の内部ガス圧が異常に高まったときに
作動する破裂防止構造である。Note that the negative electrode terminal plate 26 is provided with a cutting edge piece 26a formed by cutting and raising a gas vent hole 26b, and the tip of this cutting edge piece 26a projects into the center of the thin metal plate 30. This is a burst-prevention structure that activates when the internal gas pressure of the battery increases abnormally.
負極１４はリチウム等の金属板を円筒状に巻いたもので
、その内面側には集電体２４が接合されこの集電体２４
と上記金属薄板３０とがリード板３２によって接続され
ている。これで円筒状負極１４と負極端子板２６が電気
的に接続されている。The negative electrode 14 is a metal plate made of lithium or the like wound into a cylindrical shape, and a current collector 24 is bonded to the inner surface of the negative electrode 14.
and the metal thin plate 30 are connected by a lead plate 32. The cylindrical negative electrode 14 and the negative electrode terminal plate 26 are now electrically connected.
セパレータ１６はポリプロピレン製の不織布等からなり
、円筒状負極１４の外周に１回以上巻き付けられている
。The separator 16 is made of a nonwoven fabric made of polypropylene or the like, and is wrapped around the outer periphery of the cylindrical negative electrode 14 one or more times.
この種の電池の製造工程は、まず電池ケース１２の内部
に円筒状正極１８を装填し、セパレータ１６を外周に巻
き付けた円筒状負極１４を正極１８の孔内に装填する順
番となっている。図のように、セパレータ１６の幅は円
筒状負極１４の高さより充分に大きく、セパレータ１６
が負極１６の上下に大きくはみ出している。これは負極
１４と正極１８を確実に隔離して内部短絡を防ぐためで
ある。In the manufacturing process of this type of battery, first, a cylindrical positive electrode 18 is loaded inside a battery case 12, and then a cylindrical negative electrode 14 with a separator 16 wrapped around the outer periphery is loaded into a hole in the positive electrode 18. As shown in the figure, the width of the separator 16 is sufficiently larger than the height of the cylindrical negative electrode 14, and the separator 16
are largely protruding above and below the negative electrode 16. This is to ensure that the negative electrode 14 and the positive electrode 18 are separated from each other to prevent internal short circuits.
従来、円筒状負極１４の外周にセパレータ１６を巻き付
け、その下端側にはみ出したセパレータ１６を図中の符
号１６ａで示すように内側に折込んでいる。このように
セパレータ１６の下端縁１６ａを内側へ折畳んで負極１
４の下端部を包み込むことにより、セパレータの巻きく
ずれをなくし、負極１４の下端が電池ケース１２に直接
接触するのを防ぎ、内部短絡を確実に防止することがで
きる。Conventionally, a separator 16 is wrapped around the outer periphery of a cylindrical negative electrode 14, and the separator 16 protruding from the lower end is folded inward as shown by reference numeral 16a in the figure. In this way, the lower edge 16a of the separator 16 is folded inward and the negative electrode 1
By wrapping the lower end of the negative electrode 14, the separator can be prevented from unwinding, the lower end of the negative electrode 14 can be prevented from coming into direct contact with the battery case 12, and internal short circuits can be reliably prevented.
しかしながら、セパレータ１６を円筒状負極１４に巻き
付けた後にその下端縁１６ａを整然と中空部１４ａ側に
折畳む作業は非常に面倒であり、生産性の阻害要因の一
つであった。特に、セパレータ１６を負極１４の下端に
大きくはみ出させた場合、その下端１６ａの整然とした
折畳みは面倒 ゛である。そのためにセパレータ１６の
はみ出し量はそれほど大きくできない。セパレータ１６
のはみ出し量があまり多くなく、またその下端縁１６ａ
の負極１４内側への折畳みが良好になされていないと、
負極１４および［パレータ１６を円筒状正極１８の孔内
に挿入する際に、セパレータ１６に働く上方への引張り
力により下端縁１６ａが解れやすく、負極１４の下端部
分が露出してしまうことがある。これは内部短絡が生じ
やすい不良品の発生につながる。However, the work of wrapping the separator 16 around the cylindrical negative electrode 14 and then neatly folding its lower edge 16a toward the hollow portion 14a is extremely troublesome and is one of the factors that hinder productivity. Particularly, when the separator 16 protrudes significantly from the lower end of the negative electrode 14, it is troublesome to neatly fold the lower end 16a. Therefore, the amount of protrusion of the separator 16 cannot be increased so much. Separator 16
The amount of protrusion is not very large, and the lower edge 16a
If the negative electrode 14 is not properly folded inward,
When inserting the negative electrode 14 and the separator 16 into the hole of the cylindrical positive electrode 18, the lower edge 16a tends to unravel due to the upward pulling force acting on the separator 16, and the lower end portion of the negative electrode 14 may be exposed. . This leads to the generation of defective products that are prone to internal short circuits.
また従来、セパレータ１６の下端縁１６ａが解れないよ
うにするために、下端縁１６ａを円筒状負極１４の内側
へ折曲げた状態で、これを負極１４に加熱融着で接合す
ることも行なわれた。これによれば負極１４の下端部分
からセパレータ１６が外れて露出することはないが、セ
パレータ１６を負極１４に接合する際の熱が問題となる
。リチウム等の軽金属からなる負極１４に熱が加わると
、その表面の酸化や窒化がおこりやすく、電池性能を低
下させてしまう。Conventionally, in order to prevent the lower edge 16a of the separator 16 from unraveling, the lower edge 16a has been bent inside the cylindrical negative electrode 14 and then joined to the negative electrode 14 by heat fusion. Ta. According to this, the separator 16 does not come off and be exposed from the lower end portion of the negative electrode 14, but the heat generated when joining the separator 16 to the negative electrode 14 becomes a problem. When heat is applied to the negative electrode 14 made of a light metal such as lithium, its surface tends to be oxidized or nitrided, resulting in a decrease in battery performance.
この発明は前述した従来の問題点に鑑みなされたもので
あり、その目的は、前述のような構造の非水電解液電池
において、負極およびセパレータの部分の組立作業性を
よくし、しかもセパレータの装着不良による内部短絡が
生じないようにした製造方法を提供することにある。This invention was made in view of the above-mentioned conventional problems, and its purpose is to improve the ease of assembly of the negative electrode and separator parts in a non-aqueous electrolyte battery having the above-mentioned structure, and to improve the ease of assembly of the separator. It is an object of the present invention to provide a manufacturing method that prevents internal short circuits from occurring due to poor mounting.
上記の目的を達成するために、この発明番よ、長方形状
の負極金属板の外面にこれより大きな長方形状のセパレ
ータを重ね合わせ、前記セパレータの下端縁を前記負極
金属板の内面側に折曲げて前記負極金属板の下端部分を
前記セパレータで包み込み、その後前記負極金属板を内
側にして前記セパレータとともにこれらを円筒状に変形
させ、この円筒状物を曲記円筒状正極孔内に挿入するこ
とを特徴とする。In order to achieve the above object, in this invention, a larger rectangular separator is superimposed on the outer surface of a rectangular negative electrode metal plate, and the lower edge of the separator is bent toward the inner surface of the negative electrode metal plate. wrapping the lower end portion of the negative electrode metal plate with the separator, then turning the negative electrode metal plate inside and deforming them together with the separator into a cylindrical shape, and inserting this cylindrical object into the curved cylindrical positive electrode hole. It is characterized by
以下、この発明を図面に基づいて詳細に説明する。Hereinafter, the present invention will be explained in detail based on the drawings.
第２図はこの発明による非水電解液電池の製造方法の一
実施例を示す工程図である。同図におし１て、４０は長
方形状の負極金属板を示し、５０番よ負極金属板４０よ
り充分大きな寸法の長方形状のセパレータを示す。負極
金属板４０はリチウム等の軽金属からなり、後に円筒状
に巻かれるが、その際の内面に当たる部分にリード板４
１が集電体４２とともに接合されている。セパレータ５
０１．ｔポリプロピレン不織布等からなり、まず第２図
（Ａ）に示すように、セパレータ５ｏを広げてその上に
負極金属板４０を重ねる。この時、負極金属板４０は円
筒状に巻いた時の外面側をセパレータ５０に当てる。セ
パレータ５０と負極金属板４０を重ねた状態では、負極
金属板４ｏの４辺側にそれぞれ所定量ずつセパレータ５
ｏがはみ出している。FIG. 2 is a process diagram showing an embodiment of the method for manufacturing a non-aqueous electrolyte battery according to the present invention. In the figure, numeral 1 indicates a rectangular negative electrode metal plate, and numeral 50 indicates a rectangular separator having a size sufficiently larger than that of the negative electrode metal plate 40. The negative electrode metal plate 40 is made of a light metal such as lithium, and is later wound into a cylindrical shape, with a lead plate 4 attached to the inner surface.
1 is joined together with the current collector 42. Separator 5
01. First, as shown in FIG. 2(A), a separator 5o is spread out and a negative electrode metal plate 40 is placed thereon. At this time, the outer surface of the negative electrode metal plate 40 when wound into a cylindrical shape is brought into contact with the separator 50 . When the separator 50 and the negative metal plate 40 are stacked, a predetermined amount of separator 5 is placed on each of the four sides of the negative metal plate 4o.
The o is sticking out.
次に第２図（Ｂ）に示すように、負極金属板４０の下端
４０ａ側にはみ出すセパレータ５ｏの下端縁５０ａを上
方に折曲げ、負極金属板４ｏの下端４０ａ部分をこの折
曲げたセパレータ５０ａで包み込む。Next, as shown in FIG. 2(B), the lower edge 50a of the separator 5o protruding from the lower end 40a side of the negative electrode metal plate 40 is bent upward, and the lower end 40a portion of the negative electrode metal plate 4o is bent into the separator 50a. Wrap it in.
次に第２図（Ｃ）に示すように、セパレータ５０が負極
金属板４０の両側にはみ出した部分において、前記折曲
げによって重なった２枚のセパレータを加熱融着して接
合する。図中の符号５１が加熱鑵首部である。ここで注
目ずべきことは、セパレータ４０の折曲げられた下端縁
５０ａはその両側部において直接セパレータ５ｏの主面
に接し−Ｃいて、セパレータ同志が加熱融着で接合され
ている点である。このことは、加熱融着時の熱を負極金
属板４０にほとんど与えないですむことを意味する。従
って、負極金属板４０の表面の酸化や窒化等にはつなが
らない。Next, as shown in FIG. 2(C), the two separators overlapped by the bending are heat-fused and bonded at the portions where the separator 50 protrudes to both sides of the negative electrode metal plate 40. Reference numeral 51 in the figure is a heating chisel neck. What should be noted here is that the bent lower edge 50a of the separator 40 is in direct contact with the main surface of the separator 5o on both sides, and the separators are joined together by heat fusion. This means that almost no heat needs to be applied to the negative electrode metal plate 40 during heat fusion. Therefore, the surface of the negative electrode metal plate 40 will not be oxidized or nitrided.
次に第２図（Ｄ）に示すように、負極金属板４０を内側
にしてセパレータ５０とともにこれらを円筒状に巻いて
変形させる。円筒状に巻かれる負極金属板４０の両側は
一つのスリット４３を形成する。負極金属板４０の両側
にはみ出たセパレータ５０を、図のようにスリット４３
から円筒の内部側へ折込む。図中の符号５０ｂは負極金
属板４０の円筒の内部に折込んだセパレータ５０の両側
端を示している。Next, as shown in FIG. 2(D), these are rolled and deformed together with the separator 50 into a cylindrical shape with the negative electrode metal plate 40 inside. One slit 43 is formed on both sides of the negative electrode metal plate 40 wound into a cylindrical shape. The separator 50 protruding from both sides of the negative electrode metal plate 40 is inserted into the slit 43 as shown in the figure.
Fold it into the inside of the cylinder. Reference numeral 50b in the figure indicates both ends of the separator 50 folded into the cylindrical interior of the negative electrode metal plate 40.
以上の工程でセパレータが外周に巻かれた円筒状の負極
が完成する。一方、図示していないが、従来と同様に金
属ケース内に円筒状正極を装填しておき、その円筒状正
極の孔内に第２図（Ｄ）に示夛°円筒状物を挿入する。Through the above steps, a cylindrical negative electrode with a separator wrapped around the outer periphery is completed. On the other hand, although not shown, a cylindrical positive electrode is loaded in a metal case as in the conventional case, and a cylindrical object is inserted into the hole of the cylindrical positive electrode as shown in FIG. 2(D).
、以下は従来と同じ工程で非水電解液電池が組立てられ
る。The non-aqueous electrolyte battery is assembled using the same steps as conventional methods.
この発明の製造方法では、負極金属板４０を円筒状に変
形させる前に、平らな板の状態でセパレータ５０と重ね
合わされ、セパレータ５０の■端縁５０ａを折畳んで負
極金属板４０の下端４０８部分を包み込む。従って、非
常に簡単な作業で負極金属板４０の下端部分を整然とし
かも確実に覆うことができる。また上記の実施例のよう
に、折畳んだセパレータの両側を加熱融着て接合１れば
、セパレータによる負極金属板４０の被覆はほとんど完
璧なものとなり、負極金属板４０の位置ずれも起きない
。従って第２図（Ｄ＞のように円筒状に変形させた後も
、負極金属板４０の下端部分は確実にセパレータ５０で
被覆された状態に保たれ、これを筒状折曲内に挿入する
時、セパレータ５０に引張力が働いても、これの下端の
折曲部分は容易には解れない。このため負極金属板４０
の下端部の露出は生じ難くなり、内部短絡を生ずる不良
品の発生はきわめて少なくなる。In the manufacturing method of the present invention, before deforming the negative electrode metal plate 40 into a cylindrical shape, the negative electrode metal plate 40 is overlapped with the separator 50 in a flat plate state, and the lower end 408 of the negative electrode metal plate 40 is folded over the edge 50a of the separator 50. Wrap the part. Therefore, the lower end portion of the negative electrode metal plate 40 can be covered neatly and reliably with a very simple operation. Further, as in the above embodiment, if both sides of the folded separator are heated and fused to join 1, the negative electrode metal plate 40 is almost completely covered by the separator, and the position of the negative electrode metal plate 40 does not occur. . Therefore, even after deforming into a cylindrical shape as shown in FIG. Even when a tensile force is applied to the separator 50, the bent portion at the lower end of the separator 50 is not easily unraveled.
The lower end of the product is less likely to be exposed, and the occurrence of defective products that cause internal short circuits is extremely reduced.
なお、負極金属板４０の下端側にはみ出ずセパレータ５
０の下端縁５０ａの長さを充分に大きく取っても、これ
を第２図（Ｂ）に示すように折畳む際の作業性は全く損
われない。このことからも負極金属板４０の下端部分の
セパレータ５０による被覆は確実になる。Note that the separator 5 does not protrude to the lower end side of the negative electrode metal plate 40.
Even if the length of the lower edge 50a of 0 is made sufficiently large, the workability when folding it as shown in FIG. 2(B) is not impaired at all. This also ensures that the lower end portion of the negative electrode metal plate 40 is covered with the separator 50.
以上詳細に説明したように、この発明によれば、従来よ
り作業性の良い合理的な製造方法で、内部短絡の少ない
優れた性能の非水電解液電池を歩留りよく作ることがで
きる。As described in detail above, according to the present invention, a non-aqueous electrolyte battery with excellent performance and less internal short circuits can be manufactured with a high yield by a rational manufacturing method that is easier to work with than conventional methods.
第１図はインサイドアウト型の非水電解液電池の従来の
代表的な構造を示す断面図、第２図はこの発明による非
水電解液電池の製造方法の一実施例を示す工程図である
。
１２・・・電池ケース １４・・・円筒状負極１６・・
・セパレータ １８・・・円筒状正極４０・・・負極金
属板 ４１・・・リード板４２・・・集電体 ４３・・
・スリット５０・・・セパレータ ５０ａ・・・下端縁
特許出願人 富士電気化学株式会社
代 理 人 弁理士 −色健輔FIG. 1 is a sectional view showing a conventional typical structure of an inside-out type non-aqueous electrolyte battery, and FIG. 2 is a process diagram showing an embodiment of the method for manufacturing a non-aqueous electrolyte battery according to the present invention. . 12...Battery case 14...Cylindrical negative electrode 16...
・Separator 18... Cylindrical positive electrode 40... Negative electrode metal plate 41... Lead plate 42... Current collector 43...
・Slit 50...Separator 50a...Lower edge Patent applicant Fuji Electrochemical Co., Ltd. Representative Patent attorney - Kensuke Shiro
Claims (2)
極の孔内に挿入する構造の非水電解液電池の製造方法で
あって、長方形状の負極金属板の外面にこれより大きな
長方形状のセパレータを重ね合わせ、前記［パレータの
下端縁を前記負極金属板の内面側に折曲げて前記負極金
属板の下端部分を前記セパレータで包み込み、その後前
記負極金属板を内側にして前記セパレータとともにこれ
を円筒状に変形させ、この円筒状物を前記円筒状正極の
孔内に挿入することを特徴とする非水電解液電池の製造
方法。(1) A method for manufacturing a non-aqueous electrolyte battery in which a cylindrical negative electrode with a separator wrapped around the outer periphery is inserted into a hole in a cylindrical positive electrode, in which a larger rectangular shape is inserted into the outer surface of a rectangular negative electrode metal plate. The lower edge of the separator is folded toward the inner surface of the negative metal plate to wrap the lower end portion of the negative metal plate with the separator, and then the negative metal plate is turned inside and the separator is folded together with the separator. A method for manufacturing a non-aqueous electrolyte battery, comprising: deforming a cylindrical object into a cylindrical shape, and inserting the cylindrical object into a hole of the cylindrical positive electrode.
部分において、前記折曲げによって重なった２枚の前記
セパレータを加熱融着で接合したことを特徴とする特許
請求の範囲第１項記載の非水電解液電池のＩＩ造方法。(2) The nonaqueous non-aqueous material according to claim 1, wherein the two overlapping separators are joined by heat fusion in a portion where the separator protrudes from the negative electrode metal plate. II manufacturing method of electrolyte battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59066648A JPS60211775A (en) | 1984-04-05 | 1984-04-05 | Manufacture of non-aqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59066648A JPS60211775A (en) | 1984-04-05 | 1984-04-05 | Manufacture of non-aqueous electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60211775A true JPS60211775A (en) | 1985-10-24 |
| JPH0374466B2 JPH0374466B2 (en) | 1991-11-27 |
Family
ID=13321926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59066648A Granted JPS60211775A (en) | 1984-04-05 | 1984-04-05 | Manufacture of non-aqueous electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60211775A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202461A (en) * | 1986-02-28 | 1987-09-07 | Fuji Elelctrochem Co Ltd | Manufacture of bobbin type lithium battery |
| JPS62202460A (en) * | 1986-02-28 | 1987-09-07 | Fuji Elelctrochem Co Ltd | Manufacture of bobbin type lithium battery |
| JP2009283208A (en) * | 2008-05-20 | 2009-12-03 | Fdk Energy Co Ltd | Bobbin type lithium battery and method of manufacturing the same |
-
1984
- 1984-04-05 JP JP59066648A patent/JPS60211775A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202461A (en) * | 1986-02-28 | 1987-09-07 | Fuji Elelctrochem Co Ltd | Manufacture of bobbin type lithium battery |
| JPS62202460A (en) * | 1986-02-28 | 1987-09-07 | Fuji Elelctrochem Co Ltd | Manufacture of bobbin type lithium battery |
| JP2009283208A (en) * | 2008-05-20 | 2009-12-03 | Fdk Energy Co Ltd | Bobbin type lithium battery and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0374466B2 (en) | 1991-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |