JPH0411335Y2 - - Google Patents
Info
- Publication number
- JPH0411335Y2 JPH0411335Y2 JP1987004428U JP442887U JPH0411335Y2 JP H0411335 Y2 JPH0411335 Y2 JP H0411335Y2 JP 1987004428 U JP1987004428 U JP 1987004428U JP 442887 U JP442887 U JP 442887U JP H0411335 Y2 JPH0411335 Y2 JP H0411335Y2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- insulating plate
- spiral
- plate
- hollow cylindrical
- 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.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010248 power generation Methods 0.000 description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- Y02E60/12—
Landscapes
- Cell Separators (AREA)
Description
【考案の詳細な説明】
＜産業上の利用分野＞
この考案は、正極と負極とをセパレータを介し
て重ね合せ且つ渦巻状に巻回してなる発電要素を
用いて構成される渦巻形電池に関するものであ
る。[Detailed description of the invention] <Industrial application field> This invention relates to a spiral battery constructed using a power generation element formed by stacking a positive electrode and a negative electrode with a separator in between and winding them in a spiral shape. It is.
＜従来の技術＞
このような渦巻形電池としては、スパイラル形
リチウム電池や円筒形ニツケル−カドミウム蓄電
池などが知られている。例えばスパイラル形リチ
ウム電池では、セパレータ、正極、セパレータ、
負極を順次重ね合せた４層の積層シート物を、巻
芯を中心として渦巻状に巻回して発電要素を形成
し、次いでこの発電要素をその底部に絶縁板を配
して有底円筒状の電池缶に収納し、巻芯を抜き、
発電要素の一方の電極を電池缶に、また他方の電
極は電池缶開口部に設けた端子板に、それぞれリ
ード板によつて電気的に接続する構成としてい
る。そして、従来電池においては、第３図Ａに例
示したような中央孔１５ｂを有する合成樹脂製の
絶縁板１５を用い、一方の電極の下部に接続した
リード板をこの絶縁板１５の周縁を通つて電池缶
内底面に導出し、またリード板の絶縁板中央孔か
ら露出した部分に一方の抵抗溶接用の電極棒を当
て、また他方の電極棒は電池缶外面上に当接さ
せ、スポツト溶接によつてリード板を電池缶に電
気的に接続している。<Prior Art> As such spiral-shaped batteries, spiral-shaped lithium batteries, cylindrical nickel-cadmium storage batteries, and the like are known. For example, in a spiral lithium battery, the separator, positive electrode, separator,
A power generation element is formed by spirally winding four layers of laminated sheets with negative electrodes stacked one on top of the other around a winding core, and then this power generation element is placed in a bottomed cylindrical shape with an insulating plate placed at the bottom. Store it in a battery can, remove the core,
One electrode of the power generation element is electrically connected to the battery can, and the other electrode is electrically connected to a terminal plate provided at the opening of the battery can, respectively, by a lead plate. In the conventional battery, an insulating plate 15 made of synthetic resin having a central hole 15b as shown in FIG. Place one electrode rod for resistance welding on the part exposed from the center hole of the insulating plate of the lead plate, and place the other electrode rod on the outside surface of the battery can to perform spot welding. The lead plate is electrically connected to the battery can.
＜考案が解決しようとする問題点＞
しかしながら、上述の絶縁板はその厚さが0.2
〜0.5mm程度とかなり薄いことから、これを発電
要素底部に配して電池缶内に挿入する際に位置ず
れが生じ易く、極端な場合には第３図Ｂに示した
ように絶縁板１５の半分以上が電池缶４の内周側
にずれてしまい、このため、発電要素とリード
板、あるいは発電要素と電池缶との絶縁が不十分
となり、リード板が発電要素の他極に接触するな
どして電池の内部短絡が発生するという問題があ
る。<Problems to be solved by the invention> However, the thickness of the above-mentioned insulating plate is 0.2
Since it is quite thin at ~0.5 mm, it is easy to misalign when placing it at the bottom of the power generation element and inserting it into the battery can, and in extreme cases, the insulating plate 15 as shown in Figure 3B More than half of the battery case 4 shifts toward the inner circumferential side of the battery can 4, and as a result, the insulation between the power generation element and the lead plate, or between the power generation element and the battery can becomes insufficient, and the lead plate comes into contact with the other pole of the power generation element. There is a problem in that an internal short circuit occurs in the battery.
また、このような大きな位置ずれがなくとも、
絶縁板をかなり正確にセンター取りしないと、絶
縁板中央孔の僅かなずれによつてリード板を中央
孔から正しく露出させることが困難となり、これ
が原因で電池缶とリード板とのスポツト不良を招
くという問題もある。 Moreover, even without such a large positional shift,
If the insulating plate is not centered very accurately, the slight deviation of the center hole of the insulating plate will make it difficult to correctly expose the lead plate from the center hole, which will cause a spot failure between the battery can and the lead plate. There is also the problem.
＜問題点を解決するための手段＞
この考案の渦巻形電池は、電池缶の内面底部に
絶縁板を配し、前記絶縁板の上に、正極と負極と
をセパレータを介して重ね合せ且つ渦巻状に巻回
してなる発電要素を設けてなり、前記絶縁板が、
前記巻回の中央に形成される孔に挿着される中空
筒部をその片面に有してなり、また前記発電要素
の一方から導出したリード板が、前記中空筒部の
中央孔において、前記電池缶に溶接されているこ
とを要旨とする。<Means for solving the problem> The spiral battery of this invention has an insulating plate disposed at the bottom of the inner surface of the battery can, and a positive electrode and a negative electrode are superimposed on the insulating plate with a separator interposed therebetween. A power generating element is provided which is wound in a shape, and the insulating plate is
It has a hollow cylindrical part on one side thereof, which is inserted into a hole formed in the center of the winding, and a lead plate led out from one side of the power generation element is inserted into the center hole of the hollow cylindrical part. The gist is that it is welded to the battery can.
＜作用＞
上記のように絶縁板に形成した中空筒部を発電
要素の中央孔に挿着する構成とすれば、この中空
筒部によつて絶縁板がしつかりと位置決めされる
ので、そのセンター取りが容易且つ確実に行なわ
れるし、また電池缶挿入時の前記位置ずれがなく
なる。<Function> If the hollow cylindrical part formed on the insulating plate is inserted into the center hole of the power generating element as described above, the insulating plate will be firmly positioned by the hollow cylindrical part, so that the center of the insulating plate will be firmly positioned. The battery can be removed easily and reliably, and the positional shift when inserting the battery can is eliminated.
＜実施例＞
以下にこの考案をスパイラル形リチウム電池に
適用した実施例を説明する。<Example> An example in which this invention is applied to a spiral lithium battery will be described below.
金属リチウムをシート状に圧延して作つたリチ
ウム負極５と二酸化マンガンを活物質とするシー
ト状の正極合剤７とをポリプロピレン不織布シー
ト製のセパレータ６を介して交互に重ね合せた後
に渦巻状に巻回して構成される発電要素２の底面
に、ポリエチレンやポリプロピレンなどのオレフ
イン系樹脂で作つた肉厚が0.2〜0.5mm程度の絶縁
板１をその中空筒部１ａを上に向けて第１図Ａの
ように配した。例えば単１形では、この絶縁板１
は、その周縁に切欠き１ｃを有する直径31mm程度
で円盤状の基部の略中央に高さが８mm程度の上記
の中空筒部１ａを形成してなり、その中央には上
下に連通した直径４mm程度の中央孔１ｂを有して
いる。 A lithium negative electrode 5 made by rolling metallic lithium into a sheet and a sheet-like positive electrode mixture 7 made of manganese dioxide as an active material are alternately stacked on top of each other with a separator 6 made of a polypropylene nonwoven sheet interposed therebetween, and then formed into a spiral shape. An insulating plate 1 made of an olefin resin such as polyethylene or polypropylene and having a wall thickness of about 0.2 to 0.5 mm is placed on the bottom surface of the power generation element 2 which is formed by winding the winding, with its hollow cylindrical portion 1a facing upward as shown in FIG. Arranged like A. For example, in the single type, this insulating plate 1
The hollow cylindrical portion 1a has a diameter of about 31 mm and a height of about 8 mm at approximately the center of a disc-shaped base having a notch 1c on its periphery, and a hollow cylinder portion 1a with a diameter of 4 mm communicating vertically in the center. It has a central hole 1b of about 100 mm.
次いで、この中空筒部１ａを発電要素２の巻回
の中央に形成される孔２ａに挿着しつつ絶縁板１
を発電要素底面に密着し、また、発電要素２を構
成する一方の電極であるリチウム負極５から導出
したリード板３を、絶縁板１の周縁に形成した切
欠き１ｃを通つて絶縁板側に第１図Ｂのように折
曲した。その後、第１図Ｃのように、これらを一
体に電池缶４に挿入して収納した。そして収納後
は、電池缶４の開口部４ａ、発電要素２の孔２
ａ、絶縁板１の中央孔１ｂを介して、この中央孔
１ｂ内に位置したリード板３に抵抗溶接用電極棒
の一方を当接すると共に、電池缶４の底部外面に
は他方の電極棒を当て、リード板３を電池缶４に
スポツト溶接した。その後は非水電解液８を注入
し、合成樹脂製で環状の封口ガスケツト９及び金
属製で円盤状の端子板１０を夫々電池缶開口部に
位置させ、この開口部４ａを絞りかしめて密閉す
るなどして、第１図Ｄに示すスパイラル形リチウ
ム電池を作製した。 Next, while inserting this hollow cylindrical portion 1a into the hole 2a formed in the center of the winding of the power generating element 2, the insulating plate 1 is
is in close contact with the bottom surface of the power generation element, and the lead plate 3 led out from the lithium negative electrode 5, which is one electrode constituting the power generation element 2, is passed through the notch 1c formed on the periphery of the insulating plate 1 to the insulating plate side. It was bent as shown in Figure 1B. Thereafter, as shown in FIG. 1C, these were inserted into the battery can 4 and stored. After storage, the opening 4a of the battery can 4 and the hole 2 of the power generation element 2 are
a. One of the resistance welding electrode rods is brought into contact with the lead plate 3 located in the center hole 1b through the center hole 1b of the insulating plate 1, and the other electrode rod is attached to the bottom outer surface of the battery can 4. Then, the lead plate 3 was spot welded to the battery can 4. After that, the non-aqueous electrolyte 8 is injected, and a synthetic resin annular sealing gasket 9 and a metal disk-shaped terminal plate 10 are respectively positioned at the opening of the battery can, and the opening 4a is squeezed and sealed. In this way, a spiral-shaped lithium battery shown in FIG. 1D was manufactured.
以上のように構成されるこの考案のスパイラル
形リチウム電池では、絶縁板１の位置ずれは殆ん
ど生じることがなく、また、そのセンター取りも
うまくできた。 In the spiral-shaped lithium battery of this invention constructed as described above, there is almost no displacement of the insulating plate 1, and the centering of the insulating plate 1 can be done well.
尚、この考案に係る絶縁板としては以上説明し
たものの他、種々のものがあり、例えば第２図Ａ
に例示した絶縁板１２のように、上記の切欠きに
代えて絶縁板周縁部にスリツト状の小孔１２ｃを
形成したものを用い、発電要素底部から導出した
リード板をこの小孔１２ｃを通した後に絶縁板底
面側に折曲するように構成してもよい。また、例
えば第２図Ｂに示したように、絶縁板１３の中空
筒部１３ａの先端部をその発電要素挿着方向へテ
ーパー状としたものでもよく、これによつて発電
要素中央の孔への挿着が容易且つ確実に行なえる
ようになる。このようなテーパーは先端部のみで
もよいが、第２図Ｃのように中空筒部全体に亘つ
てテーパー状とすればより効果的である。 In addition to the above-described insulating plates according to this invention, there are various other insulating plates, such as those shown in Fig. 2A.
As in the case of the insulating plate 12 shown in FIG. The structure may be such that the insulating plate is bent toward the bottom side after the insulating plate is bent. Alternatively, as shown in FIG. 2B, for example, the tip of the hollow cylindrical portion 13a of the insulating plate 13 may be tapered in the direction in which the power generating element is inserted, thereby allowing the hole in the center of the power generating element to be inserted into the hole. can be inserted easily and reliably. Such a taper may be applied only to the tip, but it is more effective if the entire hollow cylinder is tapered as shown in FIG. 2C.
また、絶縁板に形成する中空筒部の外径は、発
電要素の中央の孔の内径と略同じとすることは言
うまでもない。そして、この外径を孔の内径より
やや大きくした場合には上記挿着により絶縁板を
発電要素底面に固着できるので工程上有利とな
る。 Furthermore, it goes without saying that the outer diameter of the hollow cylinder formed in the insulating plate is approximately the same as the inner diameter of the central hole of the power generating element. If this outer diameter is made slightly larger than the inner diameter of the hole, the insulating plate can be fixed to the bottom surface of the power generation element by the above-described insertion, which is advantageous in terms of the process.
＜考案の効果＞
以上のように、この考案の渦巻電池によれば、
絶縁板の位置ずれがなくなつて従来仕様のような
内部短絡が防止できるし、また、絶縁板がしつか
りと位置決めされてそのセンター取りが容易且つ
確実に行なえるので、センター取り不良に起因す
るリード板と電池缶とのスポツト溶接不良をなく
すことができるといつた効果を奏する。<Effects of the invention> As mentioned above, according to the spiral battery of this invention,
This eliminates the misalignment of the insulating plate, which prevents internal short circuits that occur in conventional specifications.Also, the insulating plate is firmly positioned and its centering can be done easily and reliably, which can prevent problems caused by poor centering. This has the effect of eliminating spot welding defects between the lead plate and the battery can.
また、絶縁板に設けた上記の筒状突起によつ
て、リード板を電池缶に溶接する際に発生するス
パツターによつてセパレータが損傷することがな
く、セパレータ損傷による内部短絡が防止され
る。更に、この中空筒部が溶接用の電極（電極
棒）の案内用として作用するので溶接作業が容易
になるなどの効果もある。 Furthermore, the cylindrical projection provided on the insulating plate prevents the separator from being damaged by spatter generated when welding the lead plate to the battery can, and prevents internal short circuits due to damage to the separator. Furthermore, since this hollow cylindrical portion acts as a guide for a welding electrode (electrode rod), there is an effect that welding work becomes easier.
また、絶縁板に上記のような切欠きや小孔を設
け、リード板をこれらに通して折り曲げるように
すれば、リード板の曲げ位置のずれによるリード
板と電池缶との溶接不良をも防止することができ
る。 In addition, by making notches and small holes in the insulating plate and bending the lead plate through these, it is possible to prevent welding defects between the lead plate and the battery can due to misalignment of the bending position of the lead plate. can do.
第１図Ａ〜Ｄはこの考案の実施例の電池の製造
工程を示した説明図、第２図Ａ〜Ｃはそれぞれ絶
縁板の他例を示した説明図、第３図Ａは従来電池
に用いる絶縁板の斜視図、第３図Ｂは従来電池に
おける底部の断面図である。
１，１２〜１５……絶縁板、２……発電要素、
３，１１……リード板、４……電池缶。
Figures 1A to D are explanatory diagrams showing the manufacturing process of a battery according to an embodiment of this invention, Figures 2A to C are explanatory diagrams each showing other examples of insulating plates, and Figure 3A is an explanatory diagram showing the manufacturing process of a battery according to an embodiment of this invention. FIG. 3B, a perspective view of the insulating plate used, is a sectional view of the bottom of a conventional battery. 1, 12-15... Insulating plate, 2... Power generation element,
3, 11...Lead plate, 4...Battery can.
Claims (1)
板の上に、正極と負極とをセパレータを介して
重ね合せ且つ渦巻状に巻回してなる発電要素を
設けてなり、 前記絶縁板が、前記巻回の中央に形成される
孔に挿着される中空筒部をその片面に有してな
り、 また前記発電要素の一方から導出したリード
板が、前記中空筒部の中央孔において、前記電
池缶に溶接されていることを特徴とする渦巻形
電池。 ２ 前記中空筒部の少なくとも先端部を前記挿着
方向にテーパー状としたことを特徴とする実用
新案登録請求の範囲第１項記載の渦巻形電池。 ３ 前記絶縁板の周縁に切欠きを設け、前記リー
ド板をこの切欠きを通つて絶縁板底面側に導出
したことを特徴とする実用新案登録請求の範囲
第１項または第２項記載の渦巻形電池。 ４ 前記絶縁板の周縁部に小孔を設け、前記リー
ド板をこの小孔を通つて絶縁板底面側に導出し
たことを特徴とする実用新案登録請求の範囲第
１項または第２項記載の渦巻形電池。[Claims for Utility Model Registration] 1. A power generating element comprising an insulating plate disposed on the bottom of the inner surface of a battery can, and a positive electrode and a negative electrode superimposed on the insulating plate with a separator interposed therebetween and spirally wound. The insulating plate has a hollow cylindrical part on one side thereof to be inserted into a hole formed in the center of the winding, and the lead plate led out from one of the power generating elements is A spiral battery, characterized in that the spiral battery is welded to the battery can at the center hole of the hollow cylindrical part. 2. The spiral shaped battery according to claim 1, wherein at least the tip of the hollow cylindrical portion is tapered in the insertion direction. 3. The spiral coil according to claim 1 or 2 of the utility model registration, characterized in that a notch is provided at the periphery of the insulating plate, and the lead plate is led out to the bottom side of the insulating plate through the notch. shaped battery. 4. A utility model according to claim 1 or 2, characterized in that a small hole is provided in the peripheral edge of the insulating plate, and the lead plate is led out to the bottom side of the insulating plate through the small hole. spiral battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987004428U JPH0411335Y2 (en) | 1987-01-16 | 1987-01-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987004428U JPH0411335Y2 (en) | 1987-01-16 | 1987-01-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63112760U JPS63112760U (en) | 1988-07-20 |
| JPH0411335Y2 true JPH0411335Y2 (en) | 1992-03-19 |
Family
ID=30785086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987004428U Expired JPH0411335Y2 (en) | 1987-01-16 | 1987-01-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411335Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5574254B2 (en) * | 2014-01-24 | 2014-08-20 | 株式会社Ｇｓユアサ | battery |
| JP6972583B2 (en) * | 2017-03-07 | 2021-11-24 | 株式会社Ｇｓユアサ | Power storage element |
| JP7070596B2 (en) * | 2020-03-26 | 2022-05-18 | 株式会社Ｇｓユアサ | Power storage element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49143721U (en) * | 1973-04-11 | 1974-12-11 |
-
1987
- 1987-01-16 JP JP1987004428U patent/JPH0411335Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63112760U (en) | 1988-07-20 |
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