JP2000090939A - Alkaline dry battery - Google Patents
Alkaline dry batteryInfo
- Publication number
- JP2000090939A JP2000090939A JP25481498A JP25481498A JP2000090939A JP 2000090939 A JP2000090939 A JP 2000090939A JP 25481498 A JP25481498 A JP 25481498A JP 25481498 A JP25481498 A JP 25481498A JP 2000090939 A JP2000090939 A JP 2000090939A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- base paper
- positive electrode
- tensile strength
- dry battery
- 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
-
- Y02E60/12—
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Cell Separators (AREA)
- Primary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルカリ乾電池に
係り、特にセパレータ原紙に特徴を有するアルカリ乾電
池に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alkaline dry battery, and more particularly to an alkaline dry battery characterized by a base paper for a separator.
【０００２】[0002]
【従来の技術】通常、単３型その他のアルカリ乾電池１
は、たとえば、図１に示すように、有底円筒状の正極缶
２の内面にカーボン等からなる導電膜（図示せず）が形
成され、正極缶２内に円筒状に成形した３個の正極合剤
３が収納され、この正極合剤３の内側に有底円筒状のセ
パレータ４が挿入され、このセパレータ４および正極合
剤３中に電解液が浸潤され、セパレータ４の中空部にゲ
ル状亜鉛負極５が充填されている。2. Description of the Related Art Normally, AA or other alkaline batteries 1
For example, as shown in FIG. 1, a conductive film (not shown) made of carbon or the like is formed on an inner surface of a bottomed cylindrical positive electrode can 2, and three cylindrically formed positive electrode cans 2 are formed in the positive electrode can 2. The positive electrode mixture 3 is accommodated, a bottomed cylindrical separator 4 is inserted inside the positive electrode mixture 3, and an electrolytic solution is infiltrated into the separator 4 and the positive electrode mixture 3, and a gel is formed in a hollow portion of the separator 4. The zinc anode 5 is filled.
【０００３】正極缶２の開口部には、封口体６が装着さ
れている。すなわち、封口体６は、負極端子７の内側中
央部に集電子８がスポット溶接等により固着され、この
集電子８にガスケット９がシール剤１０を介在させて嵌
入され封口キャップ１１によって締め付けられて構成さ
れている。そして、集電子８がゲル状亜鉛負極５内に挿
入されるとともに、セパレータ４の先端部４Ａがガスケ
ット９により押圧され内側に折曲された状態で、正極缶
２の開口部側の端部が内側に加締められてガスケット９
の外周部が負極端子７の外周部と正極缶２の端部との間
で締め付けられることにより、封口体６により正極缶２
の開口部が封口される。[0003] A sealing body 6 is attached to the opening of the positive electrode can 2. That is, in the sealing body 6, the current collector 8 is fixed to the inner central portion of the negative electrode terminal 7 by spot welding or the like. It is configured. Then, while the current collector 8 is inserted into the gelled zinc negative electrode 5 and the tip 4A of the separator 4 is pressed by the gasket 9 and bent inward, the opening-side end of the positive electrode can 2 is Gasket 9 caulked inside
Is clamped between the outer peripheral portion of the negative electrode terminal 7 and the end of the positive electrode can 2 so that the sealing body 6
Opening is sealed.
【０００４】正極缶２の外側には、ラベル１２が巻き付
けられている。負極端子７の外側の外周部とラベル１２
との間には、環状の負極側ワッシャ１３が介在されてい
る。[0004] A label 12 is wound around the outside of the positive electrode can 2. Outer periphery of negative electrode terminal 7 and label 12
And an annular negative-side washer 13 is interposed therebetween.
【０００５】従来、上記セパレータ４は、図２に示すよ
うに、ロール状に巻回されたセパレータ原紙２１を垂直
方向に回転させて長手方向に引き出し所定寸法に裁断
し、その後セパレータ原紙２１をマンドレルにより水平
方向に回転させて円筒状に巻き、その後胴部および底部
を熱融着して有底円筒状に形成していた。このようなセ
パレータ４の製造方法は、裁断する工程から円筒状に巻
く工程に移るときにセパレータ原紙２の移動方向を９０
度方向転換する必要があるので時間がかかり、１分間に
１００個程度の製造速度でしか製造できなかった。Conventionally, as shown in FIG. 2, a separator base paper 21 wound in a roll is rotated in the vertical direction and drawn out in a longitudinal direction to cut the separator base paper 21 into a predetermined size. , And wound in a cylindrical shape by rotating in the horizontal direction, and then the body and the bottom are heat-sealed to form a bottomed cylindrical shape. The manufacturing method of such a separator 4 is such that the moving direction of the separator base paper 2 is set to 90 when the process is shifted from the cutting process to the cylindrical winding process.
Since it was necessary to change the direction, it took a long time, and it was possible to manufacture only at a manufacturing speed of about 100 pieces per minute.
【０００６】そのため、セパレータ４を１分間に６００
個程度製造する場合には、第３図に示すように、ロール
状に巻回されたセパレータ原紙２１を水平方向に回転さ
せて長手方向に引き出し所定寸法に裁断し、その後セパ
レータ原紙２１をマンドレルにより同じく水平方向回転
させて円筒状に巻き、その後、胴部および底部を熱融着
して有底円筒状に形成する。このようにすれば、裁断す
る工程から円筒状に巻く工程に移るときにセパレータ原
紙２１の移動方向を変える必要がないので、製造速度を
上げることができるのである。For this reason, the separator 4 is set at 600
In the case of manufacturing about pieces, as shown in FIG. 3, the separator base paper 21 wound in a roll is rotated in the horizontal direction and drawn out in the longitudinal direction, cut into a predetermined size, and then the separator base paper 21 is cut with a mandrel. Similarly, it is rotated in the horizontal direction and wound into a cylindrical shape, and then the body and the bottom are heat-sealed to form a bottomed cylindrical shape. In this way, it is not necessary to change the moving direction of the separator base paper 21 when moving from the cutting step to the cylindrical winding step, so that the production speed can be increased.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、セパレ
ータ原紙２１を水平方向に回転させて長手方向に引き出
し所定寸法に裁断し、そのまま同様に水平回転させて円
筒状に巻くと、円筒状のセパレータ４の軸心方向がセパ
レータ原紙２１の幅方向に一致するので、封口体６のガ
スケット９によりセパレータ４の先端部４Ａを押圧し半
径方向内側に折曲したときに、座屈してしまうことがあ
った。このような座屈が発生すると、アルカリ乾電池１
に振動や衝撃が加わった場合に、ゲル状亜鉛負極５がセ
パレータ４とガスケット９との間から正極合剤３側に移
動し内部短絡し易くなるという問題があった。However, when the separator base paper 21 is rotated in the horizontal direction, pulled out in the longitudinal direction, cut into a predetermined size, and then similarly horizontally rotated and wound into a cylindrical shape, the cylindrical separator 4 is formed. Since the axial direction matches the width direction of the separator base paper 21, when the gasket 9 of the sealing body 6 presses the distal end portion 4A of the separator 4 and bends inward in the radial direction, it may buckle. When such buckling occurs, the alkaline dry battery 1
However, when vibration or impact is applied, the gelled zinc negative electrode 5 moves from the space between the separator 4 and the gasket 9 to the positive electrode mixture 3 side, and there is a problem that an internal short circuit is easily caused.
【０００８】本発明は、上記事情に鑑みなされたもの
で、ロール状に巻回されたセパレータ原紙を水平方向に
回転させて引き出し所定寸法に裁断した後、このセパレ
ータ原紙を水平方向に回転させて形成した円筒部を有す
るセパレータの先端部が、封口体のガスケットにより半
径方向内側に折曲された構造においても、セパレータ先
端部の挫屈を防止することができて、振動や衝撃が加わ
った場合の内部短絡を防止することができるアルカリ乾
電池を提供することを目的とする。The present invention has been made in view of the above circumstances, and is configured to rotate a separator base paper wound in a roll shape in a horizontal direction, draw out the separator base paper to a predetermined size, and then rotate the separator base paper in a horizontal direction. Even when the tip of the separator having the formed cylindrical portion is bent inward in the radial direction by the gasket of the sealing body, buckling of the tip of the separator can be prevented, and vibration or impact is applied. It is an object of the present invention to provide an alkaline dry battery capable of preventing an internal short circuit from occurring.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、請求項１に記載の本発明に係るアルカリ乾電池は、
有底円筒状の正極缶内に円筒状に成形した正極合剤が収
納され、この正極合剤の内側に、ロール状に巻回された
セパレータ原紙を水平方向に回転させて引き出し所定寸
法に裁断した後、このセパレータ原紙を水平方向に回転
させて形成した円筒部を有するセパレータが挿入され、
このセパレータおよび上記正極合剤中に電解液が浸潤さ
れ、上記セパレータの中空部にゲル状亜鉛負極が充填さ
れ、上記正極缶の開口部に封口体が装着されてなり、か
つ上記封口体のガスケットにより上記セパレータの先端
部が半径方向内側に折曲されたアルカリ乾電池におい
て、上記セパレータ原紙の長手方向の引張り強さと幅方
向の引張り強さの比が２／１〜１／１であることを特徴
とするものである。In order to achieve the above object, an alkaline dry battery according to the present invention according to claim 1 comprises:
A positive electrode mixture formed into a cylindrical shape is housed in a bottomed cylindrical positive electrode can, and inside the positive electrode mixture, a separator base paper wound in a roll is rotated in a horizontal direction and pulled out to be cut into a predetermined size. After that, a separator having a cylindrical portion formed by rotating the separator base paper in the horizontal direction is inserted,
An electrolytic solution is infiltrated into the separator and the positive electrode mixture, the hollow portion of the separator is filled with a gelled zinc negative electrode, a sealing body is attached to an opening of the positive electrode can, and a gasket for the sealing body Wherein the ratio of the tensile strength in the longitudinal direction to the tensile strength in the width direction of the separator base paper is 2/1 to 1/1 in an alkaline dry battery in which the leading end of the separator is bent inward in the radial direction. It is assumed that.
【００１０】ここで、上記の円筒部を有するセパレータ
とは、円筒状のセパレータ、底部外周部を備えた円筒状
のセパレータおよび有底円筒状のセパレータを含む概念
である。すなわち、上記セパレータ４は、有底円筒状に
形成したが、これに代えて、セパレータ４を円筒状ある
いは底部外周部を備えた円筒状に形成し、底部あるいは
底部中央部は、底カップを用いたり、別体のセパレータ
を用いたり、あるいはホットメルト樹脂などを用いても
よい。Here, the above-mentioned separator having a cylindrical portion is a concept including a cylindrical separator, a cylindrical separator having a bottom outer peripheral portion, and a bottomed cylindrical separator. That is, although the separator 4 is formed in a bottomed cylindrical shape, the separator 4 is formed in a cylindrical shape or a cylindrical shape having a bottom outer peripheral portion, and a bottom cup is used in the bottom portion or the bottom central portion. Alternatively, a separate separator may be used, or a hot melt resin or the like may be used.
【００１１】請求項１に記載の発明においては、セパレ
ータ原紙の繊維の配向性を緩和し、長手方向の引張り強
さと幅方向の引張り強さの比が２／１〜１／１に規制さ
れることにより、ロール状に巻回されたセパレータ原紙
を水平方向に回転させて引き出し所定寸法に裁断した
後、このセパレータ原紙を水平方向に回転させて形成し
た円筒部を有するセパレータの先端部が、封口体のガス
ケットにより半径方向内側に折曲された構造において
も、セパレータ先端部が挫屈することがない。したがっ
て、振動や衝撃が加わった場合にも内部短絡が発生しな
い。その結果、製品不良を発生することなくセパレータ
の製造速度、ひいてはアルカリ乾電池の製造速度が向上
する。According to the first aspect of the present invention, the orientation of the fibers of the separator base paper is relaxed, and the ratio of the tensile strength in the longitudinal direction to the tensile strength in the width direction is regulated to 2/1 to 1/1. By rotating the separator base paper wound in a roll shape in the horizontal direction and pulling it out to cut it to a predetermined size, the separator base paper having a cylindrical portion formed by rotating the separator in the horizontal direction is closed. Even in the structure bent inward in the radial direction by the body gasket, the separator tip does not buckle. Therefore, even when vibration or impact is applied, no internal short circuit occurs. As a result, the production speed of the separator and, consequently, the production speed of the alkaline dry battery can be improved without causing product defects.
【００１２】[0012]
【実施例】以下、本発明の効果を確認するために行った
実施例について説明する。 （実施例１）まず、図１に示した単３型のアルカリ乾電
池１を次のようにして製造した。電解二酸化マンガン９
２重量％と黒鉛５重量％と４０％水酸化カリウム２．５
重量％とバインダー０．５重量％を混合した正極合剤粉
を整粒した後、円筒状に成形して正極合剤３を作製し、
有底円筒状の正極缶２内に３個収納した。次いで、この
正極合剤３内にセパレータ４を挿入した。EXAMPLES Examples performed to confirm the effects of the present invention will be described below. (Example 1) First, the AA alkaline battery 1 shown in FIG. 1 was manufactured as follows. Electrolytic manganese dioxide 9
2% by weight, 5% by weight of graphite and 2.5% of 40% potassium hydroxide
After the positive electrode mixture powder obtained by mixing 0.5% by weight of the binder and 0.5% by weight of the binder is sized, the mixture is molded into a cylindrical shape to produce a positive electrode mixture 3,
Three pieces were housed in the bottomed cylindrical positive electrode can 2. Next, the separator 4 was inserted into the positive electrode mixture 3.
【００１３】ここで、このセパレータ４は、図３に示す
ように、ビニロン繊維／レーヨン繊維／ビニロンバイン
ダーからなる厚さ１２０μｍ、幅５６ｍｍのロール状に
巻回されたセパレータ原紙２１を水平方向に回転させて
長手方向に引き出して長さ８１ｍｍ、幅５６ｍｍの四角
に裁断し、その後そのセパレータ原紙２１をマンドレル
により同じく水平方向回転させて円筒状に３重に巻き、
その後胴部および底部を熱融着して外形８．８ｍｍ、高
さ４８ｍｍの有底円筒状に形成した。上記セパレータ原
紙２１は、長手方向２００ｍｍ、幅１５ｍｍの四角片を
引張り試験した結果、長手方向の引張り強さおよび幅方
向の引張り強さが、それぞれ４．５ｋｇ、３．０ｋｇ
で、その比が、１．５／１のものを用いた。As shown in FIG. 3, the separator 4 is formed by rotating a separator base paper 21 formed of vinylon fiber / rayon fiber / vinylon binder and having a thickness of 120 μm and a width of 56 mm, in a horizontal direction. Then, it is pulled out in the longitudinal direction and cut into a square of 81 mm in length and 56 mm in width. Thereafter, the separator base paper 21 is similarly horizontally rotated by a mandrel and wound three times in a cylindrical shape.
Thereafter, the body and the bottom were heat-sealed to form a bottomed cylinder having an outer shape of 8.8 mm and a height of 48 mm. The separator base paper 21 was subjected to a tensile test of a rectangular piece having a longitudinal direction of 200 mm and a width of 15 mm. As a result, the tensile strength in the longitudinal direction and the tensile strength in the width direction were 4.5 kg and 3.0 kg, respectively.
The ratio was 1.5 / 1.
【００１４】次いで、このセパレータ４内に４０％水酸
化カリウム水溶液１．１ｍｌを注入し、セパレータ４お
よび正極合剤３中に湿潤させるために所定のエージング
時間を経過させた。次いで、亜鉛粉６８重量％、ポリア
クリル酸０．４重量％、酸化亜鉛１．１重量％、４０％
水酸化カリウム水溶液３０．５重量％により作製したゲ
ル状亜鉛負極５を、セパレータの中空部内に充填した。Next, 1.1 ml of a 40% aqueous solution of potassium hydroxide was injected into the separator 4 and a predetermined aging time was allowed to elapse in order to wet the separator 4 and the positive electrode mixture 3. Next, zinc powder 68% by weight, polyacrylic acid 0.4% by weight, zinc oxide 1.1% by weight, 40%
A gel zinc negative electrode 5 prepared from 30.5% by weight of an aqueous potassium hydroxide solution was filled in the hollow portion of the separator.
【００１５】次いで、集電子８をゲル状亜鉛負極５内に
挿入するとともに、セパレータ４の先端部４Ａ４ｍｍを
ガスケット９により押圧し内側に折曲した状態で、正極
缶２の開口部側の端部を内側に加締めてガスケット９の
外周部を負極端子７の外周部と正極缶２の端部との間で
締め付けることにより、封口体６により正極缶２の開口
部を封口した。次いで、正極缶２の外側に、負極端子７
の外側の外周部とラベル１２との間に環状の負極側ワッ
シャ１３が介在させてラベル１２を巻き付けた。Next, the current collector 8 is inserted into the gelled zinc negative electrode 5, and the end 4 A 4 mm of the separator 4 is pressed by the gasket 9 and bent inward. The inside of the positive electrode can 2 was sealed by the sealing body 6 by tightening the inner side of the gasket 9 between the outer periphery of the negative electrode terminal 7 and the end of the positive electrode can 2. Next, a negative electrode terminal 7 is provided outside the positive electrode can 2.
The label 12 was wound with an annular negative-side washer 13 interposed between the outer peripheral portion of the outer side and the label 12.
【００１６】次に、このようにして製造したアルカリ乾
電池１を、負極端子７側を下にして加速度５００Ｇで５
０個落下させ、落下後内部短絡の有無を調べた。その結
果、５０個中すべて内部短絡はなかった。Next, the alkaline dry battery 1 manufactured in this manner is loaded with the negative electrode terminal 7 side downward at an acceleration of 500 G.
After dropping 0 pieces, the presence or absence of an internal short circuit after dropping was examined. As a result, there was no internal short circuit in all 50 pieces.
【００１７】(実施例２)上記セパレータ原紙２１とし
て、長手方向２００ｍｍ、幅１５ｍｍの四角片を引張り
試験した結果、長手方向の引張り強さおよび幅方向の引
張り強さが、それぞれ４．５ｋｇ、２．２ｋｇで、その
比が、２．０／１のものを用いた以外は、実施例１と同
様に製造し、落下試験を行った。その結果、５０個中す
べて内部短絡はなかった。(Example 2) As a result of a tensile test of a square piece having a length of 200 mm and a width of 15 mm as the separator base paper 21, the tensile strength in the longitudinal direction and the tensile strength in the width direction were 4.5 kg, 2 kg, respectively. It was manufactured in the same manner as in Example 1 except that the weight was 0.2 kg and the ratio was 2.0 / 1, and a drop test was performed. As a result, there was no internal short circuit in all 50 pieces.
【００１８】（実施例３）上記セパレータ原紙２１とし
て、長手方向２００ｍｍ、幅１５ｍｍの四角片を引張り
試験した結果、長手方向の引張り強さおよび幅方向の引
張り強さが、それぞれ４．５Ｋｇ、３．６Ｋｇで、その
比が、１．１／１のものを用いた以外は、実施例１と同
様に製造し、落下試験を行った。その結果、５０個中す
べて内部短絡はなかった。(Example 3) As a result of a tensile test of a square piece having a length of 200 mm and a width of 15 mm as the separator base paper 21, the tensile strength in the longitudinal direction and the tensile strength in the width direction were 4.5 kg, 3 kg, respectively. It was manufactured in the same manner as in Example 1 except that a material having a ratio of 0.6 kg and a ratio of 1.1 / 1 was used, and a drop test was performed. As a result, there was no internal short circuit in all 50 pieces.
【００１９】（比較例１）比較例１として、図２に示す
ように、ロール状に巻回されたセパレータ原紙２１を垂
直方向に回転させて長手方向に引き出して裁断し、その
後セパレータ原紙２１をマンドレルにより水平方向に回
転させて円筒状に巻き、その後胴部および底部を熱融着
して有底円筒状にセパレータ４を製造する点、および上
記セパレータ原紙２１として、長手方向２００ｍｍ、幅
１５ｍｍの四角片を引張り試験した結果、長手方向の引
張り強さおよび幅方向の引張り強さが、それぞれ４．５
ｋｇ、１．７ｋｇで、その比が、２．７／１のものを用
いた以外は、実施例１と同様に製造し、落下試験を行っ
た。その結果、５０個中すべて内部短絡はなかった。(Comparative Example 1) As Comparative Example 1, as shown in FIG. 2, a separator base paper 21 wound in a roll is rotated in the vertical direction, drawn out in the longitudinal direction, cut, and then cut. The separator 4 is formed into a cylindrical shape with a bottom by rotating the mandrel in the horizontal direction and winding it into a cylindrical shape, and then by fusing the body and the bottom with heat, and the separator base paper 21 has a length of 200 mm and a width of 15 mm. As a result of the tensile test of the square piece, the tensile strength in the longitudinal direction and the tensile strength in the width direction were each 4.5.
kg, 1.7 kg, and a ratio of 2.7 / 1 was used in the same manner as in Example 1, except that a drop test was performed. As a result, there was no internal short circuit in all 50 pieces.
【００２０】（比較例２）また、上記セパレータ原紙２
１として、長手方向２００ｍｍ、幅１５ｍｍの四角片を
引張り試験した結果、長手方向の引張り強さおよび幅方
向の引張り強さが、それぞれ４．５ｋｇ、１．７ｋｇ
で、その比が、２．７／１のものを用いた以外は、実施
例１と同様に製造し、落下試験を行った。その結果、５
０個中７個に内部短絡が発生した。(Comparative Example 2) The above separator base paper 2
As a result, as a result of a tensile test of a square piece having a length of 200 mm and a width of 15 mm, the tensile strength in the longitudinal direction and the tensile strength in the width direction were 4.5 kg and 1.7 kg, respectively.
A drop test was performed in the same manner as in Example 1, except that the ratio was 2.7 / 1. As a result, 5
An internal short circuit occurred in seven of the 0 pieces.
【００２１】以上の結果、比較例１のように、図２に示
す方法によりセパレータ４を製造した場合には、セパレ
ータ原紙２１の長手方向の引張り強さと幅方向の引張り
強さの比が２より大きくても、内部短絡は発生しない
が、比較例２のように、図３に示す方法によりセパレー
タ４を製造した場合には、セパレータ原紙２１の長手方
向の引張り強さと幅方向の引張り強さの比が２より大き
いと内部短絡が発生してしまう一方、２以下の場合には
内部短絡が発生しないことが確認できた。As a result, when the separator 4 is manufactured by the method shown in FIG. 2 as in Comparative Example 1, the ratio of the tensile strength in the longitudinal direction to the tensile strength in the width direction of the separator base paper 21 is less than 2. Even if it is large, an internal short circuit does not occur, but when the separator 4 is manufactured by the method shown in FIG. 3 as in Comparative Example 2, the tensile strength in the longitudinal direction and the tensile strength in the width direction of the separator base paper 21 are reduced. It was confirmed that when the ratio was greater than 2, an internal short circuit occurred, whereas when the ratio was 2 or less, no internal short circuit occurred.
【００２２】[0022]
【発明の効果】以上説明したように、請求項１に記載の
本発明に係るアルカリ乾電池にあっては、セパレータ原
紙の長手方向の引張り強さと幅方向の引張り強さの比を
２／１〜１／１にしたから、ロール状に巻回されたセパ
レータ原紙を水平方向に回転させて引き出し所定寸法に
裁断した後、このセパレータ原紙を水平方向に回転させ
て形成した円筒部を有するセパレータの先端部が、封口
体のガスケットにより半径方向内側に折曲された構造に
おいても、セパレータ先端部の挫屈を防止することがで
きるので、振動や衝撃が加わった場合にも内部短絡が発
生するのを防止することができる。よって、製品不良を
発生することなくセパレータの製造速度、ひいてはアル
カリ乾電池の製造速度の向上を図ることができる。As described above, in the alkaline dry battery according to the first aspect of the present invention, the ratio of the tensile strength in the longitudinal direction to the tensile strength in the width direction of the separator base paper is 2/1 to 1. After being reduced to 1/1, the separator base paper wound in a roll shape is rotated in the horizontal direction, pulled out, cut into a predetermined size, and then the separator base paper is rotated in the horizontal direction to form a tip of a separator having a cylindrical portion formed. Even in the structure where the part is bent radially inward by the gasket of the sealing body, buckling of the tip of the separator can be prevented, so that an internal short circuit will not occur even if vibration or impact is applied. Can be prevented. Therefore, the production speed of the separator, and hence the production speed of the alkaline dry battery, can be improved without causing product defects.
【図１】本発明に係るアルカリ乾電池の縦断面図であ
る。FIG. 1 is a longitudinal sectional view of an alkaline dry battery according to the present invention.
【図２】従来のセパレータの製造方法を説明するための
工程図である。FIG. 2 is a process chart for explaining a conventional separator manufacturing method.
【図３】本発明に係るセパレータの製造方法を説明する
ための工程図である。FIG. 3 is a process chart for explaining a method of manufacturing a separator according to the present invention.
１ アルカリ乾電池 ２ 正極缶 ３ 正極合剤 ４ セパレータ ４Ａ セパレータの先端部 ５ ゲル状亜鉛負極 ６ 封口体 ９ ガスケット ２１ セパレータ原紙 REFERENCE SIGNS LIST 1 Alkaline battery 2 Positive electrode can 3 Positive electrode mixture 4 Separator 4 A Separator tip 5 Gelled zinc negative electrode 6 Sealing body 9 Gasket 21 Separator base paper
───────────────────────────────────────────────────── フロントページの続き (72)発明者 太田 廣彦 東京都港区新橋５丁目36番11号 富士電気 化学株式会社内 Ｆターム(参考） 5H011 AA09 DD06 FF02 KK00 KK01 KK02 5H021 AA04 BB04 BB05 CC14 CC17 HH01 HH06 5H024 AA03 AA14 BB09 CC02 CC07 DD09 HH00 HH01 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hirohiko Ota 5-36-11 Shimbashi, Minato-ku, Tokyo Fuji Electric Chemical Co., Ltd. F-term (reference) 5H011 AA09 DD06 FF02 KK00 KK01 KK02 5H021 AA04 BB04 BB05 CC14 CC17 HH01 HH06 5H024 AA03 AA14 BB09 CC02 CC07 DD09 HH00 HH01
Claims (1)
た正極合剤が収納され、この正極合剤の内側に、ロール
状に巻回されたセパレータ原紙を水平方向に回転させて
引き出し所定寸法に裁断した後、このセパレータ原紙を
水平方向に回転させて形成した円筒部を有するセパレー
タが挿入され、このセパレータおよび上記正極合剤中に
電解液が浸潤され、上記セパレータの中空部にゲル状亜
鉛負極が充填され、上記正極缶の開口部に封口体が装着
されてなり、かつ上記封口体のガスケットにより上記セ
パレータの先端部が半径方向内側に折曲されたアルカリ
乾電池において、 上記セパレータ原紙の長手方向の引張り強さと幅方向の
引張り強さの比が２／１〜１／１であることを特徴とす
るアルカリ乾電池。1. A cylindrical positive electrode mixture is accommodated in a bottomed cylindrical positive electrode can, and a separator base paper wound in a roll is rotated in a horizontal direction inside the positive electrode mixture. After being cut out to a predetermined size, a separator having a cylindrical portion formed by rotating the separator base paper in the horizontal direction is inserted, and the electrolytic solution is infiltrated into the separator and the positive electrode mixture, and into the hollow portion of the separator. An alkaline dry battery in which a gelled zinc negative electrode is filled, a sealing body is attached to an opening of the positive electrode can, and a tip end of the separator is bent inward in a radial direction by a gasket of the sealing body. An alkaline dry battery, wherein the ratio of the tensile strength in the longitudinal direction to the tensile strength in the width direction of the base paper is 2/1 to 1/1.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25481498A JP3475803B2 (en) | 1998-09-09 | 1998-09-09 | Alkaline batteries |
| US09/270,769 US6270833B1 (en) | 1998-05-28 | 1999-03-17 | Separator for an alkaline cell and a method of producing the separator |
| CNB991069153A CN1174503C (en) | 1998-05-28 | 1999-05-27 | Separator for alkaline cell and method of producing separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25481498A JP3475803B2 (en) | 1998-09-09 | 1998-09-09 | Alkaline batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000090939A true JP2000090939A (en) | 2000-03-31 |
| JP3475803B2 JP3475803B2 (en) | 2003-12-10 |
Family
ID=17270260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25481498A Expired - Lifetime JP3475803B2 (en) | 1998-05-28 | 1998-09-09 | Alkaline batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3475803B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002298803A (en) * | 2001-03-30 | 2002-10-11 | Toshiba Battery Co Ltd | Flat nonaqueous electrolyte secondary battery |
| US7544444B2 (en) | 2004-06-30 | 2009-06-09 | Panasonic Corporation | Alkaline dry battery and method for evaluating separator for use in alkaline dry battery |
| EP2071652A1 (en) | 2007-12-07 | 2009-06-17 | Panasonic Corporation | Alkaline battery and battery pack |
-
1998
- 1998-09-09 JP JP25481498A patent/JP3475803B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002298803A (en) * | 2001-03-30 | 2002-10-11 | Toshiba Battery Co Ltd | Flat nonaqueous electrolyte secondary battery |
| US7544444B2 (en) | 2004-06-30 | 2009-06-09 | Panasonic Corporation | Alkaline dry battery and method for evaluating separator for use in alkaline dry battery |
| EP2071652A1 (en) | 2007-12-07 | 2009-06-17 | Panasonic Corporation | Alkaline battery and battery pack |
| US7794874B2 (en) | 2007-12-07 | 2010-09-14 | Panasonic Corporation | Alkaline battery and battery pack |
| US8206850B2 (en) | 2007-12-07 | 2012-06-26 | Panasonic Corporation | Alkaline battery and battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3475803B2 (en) | 2003-12-10 |
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