JPH10255773A - Manufacture of flat-type lithium battery and its positive electrode ring - Google Patents
Manufacture of flat-type lithium battery and its positive electrode ringInfo
- Publication number
- JPH10255773A JPH10255773A JP5739497A JP5739497A JPH10255773A JP H10255773 A JPH10255773 A JP H10255773A JP 5739497 A JP5739497 A JP 5739497A JP 5739497 A JP5739497 A JP 5739497A JP H10255773 A JPH10255773 A JP H10255773A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- electrode ring
- lithium battery
- flat
- ring
- 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
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、扁平型リチウム電
池に関し、さらに該扁平型リチウム電池に使用する断面
略Ｌ字状の正極リングの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat lithium battery, and more particularly, to a method for manufacturing a positive electrode ring having a substantially L-shaped cross section for use in the flat lithium battery.
【０００２】[0002]
【従来の技術】偏平型リチウム電池の構造の一例を図３
に示す。図３において、１１はステンレス鋼などの導電
材料で構成されている正極容器、１２は二酸化マンガン
を正極活物質とする正極合剤、１３はステンレス鋼など
の導電材で構成される正極リングである。１４は正極合
剤１２の上に積層されるセパレーターで例えばポリプロ
ピレン不織布から成り、ここに所定の電解液が保持され
ている。１５は負極活物質で例えばリチウム箔から成
り、セパレーター１４の上に積層されている。１６は負
極容器である。2. Description of the Related Art An example of the structure of a flat lithium battery is shown in FIG.
Shown in In FIG. 3, reference numeral 11 denotes a positive electrode container formed of a conductive material such as stainless steel, 12 denotes a positive electrode mixture using manganese dioxide as a positive electrode active material, and 13 denotes a positive electrode ring formed of a conductive material such as stainless steel. . Reference numeral 14 denotes a separator laminated on the positive electrode mixture 12, which is made of, for example, a polypropylene nonwoven fabric, and holds a predetermined electrolytic solution. Reference numeral 15 denotes a negative electrode active material made of, for example, a lithium foil, and is laminated on the separator 14. Reference numeral 16 denotes a negative electrode container.
【０００３】扁平型リチウム電池は、反応に伴い正極活
物質中へリチウムイオンが侵入することにより、正極合
剤の体積が膨張するという特性をもっている。放電によ
り負極活物質が消耗すると負極１５の厚さが減少する。
一方、正極合剤の膨張は厚さ方向ばかりでなく径方向へ
も膨張するので、負極厚さの減少に対して正極合剤の厚
さ方向の膨張が不十分であることがあり、そうすると極
間距離が拡大することになる。その結果、電池の内部抵
抗が上昇し、放電電圧の低下による放電容量の減少が生
ずる。[0003] The flat type lithium battery has the characteristic that the volume of the positive electrode mixture expands when lithium ions enter the positive electrode active material during the reaction. When the negative electrode active material is consumed by the discharge, the thickness of the negative electrode 15 decreases.
On the other hand, since the expansion of the positive electrode mixture expands not only in the thickness direction but also in the radial direction, the expansion of the positive electrode mixture in the thickness direction may be insufficient with respect to the decrease in the negative electrode thickness. The distance between them will increase. As a result, the internal resistance of the battery increases, and the discharge capacity decreases due to the decrease in the discharge voltage.
【０００４】そこで従来は、図３に示すように断面略Ｌ
字状の正極リング１３を使用することにより、正極合剤
の径方向への膨張を規制して厚さ方向への膨張を促し、
それによって放電時の内部抵抗上昇による放電電圧の低
下を防いできた。Therefore, conventionally, as shown in FIG.
By using the letter-shaped positive electrode ring 13, the radial expansion of the positive electrode mixture is regulated to promote the expansion in the thickness direction,
As a result, a decrease in discharge voltage due to an increase in internal resistance during discharge was prevented.
【０００５】従来の正極リングの製造は、次のような手
順で行われていた。これを図２によって説明する。最初
に位置決めのパイロット穴あけ１を行い、次に内側ラン
ス６を行う。次に外側のランス７を行った後、絞り８を
行って凹状にする。次に断面略Ｌ字状になるように凹の
中心に正極リングの内径になる穴あけ２を行い、最後に
トリム５を行って金属箔板から取り外し、正極リングと
する。A conventional positive electrode ring has been manufactured in the following procedure. This will be described with reference to FIG. First, a pilot hole 1 for positioning is made, and then an inner lance 6 is made. Next, after the outer lance 7 is formed, the aperture 8 is formed to make a concave shape. Next, a hole 2 having an inner diameter of the positive electrode ring is formed at the center of the concave so as to have a substantially L-shaped cross section, and finally trim 5 is performed and removed from the metal foil plate to obtain a positive electrode ring.
【０００６】しかし、この絞り方式で製造した正極リン
グは表面が平滑なため、この正極リングを使用した場
合、正極活物質と接触抵抗が高く、これが原因で電池内
部抵抗が高くなるという問題が生じた。そこで、これを
改善するために正極リング表面にニッケルメッキを行っ
て接触抵抗を低減させ、これによって導電性の向上を図
っていた。However, since the positive electrode ring manufactured by this drawing method has a smooth surface, when this positive electrode ring is used, there is a problem that the contact resistance with the positive electrode active material is high, which causes the internal resistance of the battery to increase. Was. Therefore, in order to improve this, nickel plating is performed on the surface of the positive electrode ring to reduce the contact resistance, thereby improving the conductivity.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、正極リ
ングと正極活物質の導電性を向上させるために表面にニ
ッケルメッキを施すと、電池貯蔵中にＮｉが電解液中に
溶出し、これが負極活物質表面に析出して反応性の低い
皮膜を形成し、電池の反応性が低下するという問題が発
生する。However, when nickel plating is applied to the surface of the positive electrode ring and the positive electrode active material in order to improve the conductivity thereof, Ni elutes into the electrolyte during storage of the battery, and this elutes in the negative electrode active material. A problem arises in that the film is deposited on the surface to form a film with low reactivity, and the reactivity of the battery is reduced.
【０００８】また、従来の正極リングの製造方法では、
位置決めのパイロット穴あけ１を行った後に、内側ラン
ス６，外側ランス７を行い、凹状に絞り出すため、金属
箔板のスリット幅が正極リング外径の１．５倍〜２倍必
要であり、歩留まりの向上が望まれる。In the conventional method for manufacturing a positive electrode ring,
After the pilot drilling 1 for positioning is performed, the inner lance 6 and the outer lance 7 are performed to squeeze out in a concave shape. Therefore, the slit width of the metal foil plate is required to be 1.5 to 2 times the outer diameter of the positive electrode ring. Improvement is desired.
【０００９】本発明は上記問題に対処してなされたもの
で、接触抵抗を低減させた正極リングの製造方法を提供
し、それによって導電性の向上した扁平型リチウム電池
を提供することを目的とする。The present invention has been made in view of the above problems, and has as its object to provide a method of manufacturing a positive electrode ring with reduced contact resistance, thereby providing a flat lithium battery having improved conductivity. I do.
【００１０】[0010]
【課題を解決するための手段】すなわち本発明は、正極
合剤に隣接して断面略Ｌ字状の正極リングを備えた扁平
型リチウム電池において、該断面略Ｌ字状の正極リング
の表面粗さが平均粗さ５μｍ〜５０μｍであることを特
徴とする。また本発明は上記扁平型リチウム電池の断面
略Ｌ字状の正極リングの製造方法に関するもので、金属
箔板を上面又は下面から突出させた後、断面略Ｌ字状に
成形することを特徴とする。That is, the present invention relates to a flat lithium battery provided with a positive electrode ring having a substantially L-shaped cross-section adjacent to a positive electrode mixture, wherein the surface roughness of the positive electrode ring having a substantially L-shaped cross section is provided. Has an average roughness of 5 μm to 50 μm. The present invention also relates to a method for producing a positive electrode ring having a substantially L-shaped cross section of the flat lithium battery, wherein the metal foil plate is formed into a substantially L-shaped cross section after protruding from an upper surface or a lower surface. I do.
【００１１】本発明の正極リングの製造方法はバーリン
グ方式であり、位置決めの穴あけを行った後の、内側ラ
ンス６，外側ランス７の工程は不要となる。すなわち、
本発明では位置決めの穴あけを行った後、金属箔板の上
面、又は下面から板を突出させるバーリングを行い、金
属箔板を突出させる。この時金属箔板が伸ばされ、表面
に凹凸が発生する。この凹凸の大きさ、すなわち表面粗
さは、バーリング時の突出量により制御することが可能
である。その後断面略Ｌ字状に成形を行い金属箔板から
切り外す。The method of manufacturing the positive electrode ring of the present invention is a burring method, and the steps of the inner lance 6 and the outer lance 7 after the positioning holes are made unnecessary. That is,
In the present invention, after drilling holes for positioning, burring is performed to project the plate from the upper surface or the lower surface of the metal foil plate, and the metal foil plate is projected. At this time, the metal foil plate is stretched, and irregularities are generated on the surface. The size of the unevenness, that is, the surface roughness can be controlled by the amount of protrusion during burring. Then, it is formed into a substantially L-shaped cross section and cut off from the metal foil plate.
【００１２】このバーリング方式では内側ランス６，外
側ランス７の工程を省き、バーリングで金属箔板を突出
させているため、金属箔板のスリット幅を狭くすること
ができ、歩留まりの向上も図れる。金属箔板のスリット
幅は正極リング外径の１．１倍程度まで狭くすることが
可能である。In this burring method, the steps of the inner lance 6 and the outer lance 7 are omitted, and the metal foil plate is projected by burring, so that the slit width of the metal foil plate can be narrowed and the yield can be improved. The slit width of the metal foil plate can be reduced to about 1.1 times the outer diameter of the positive electrode ring.
【００１３】本発明の製造方法により正極リングの表面
粗さを平均粗さ５μｍ〜５０μｍにすることにより、正
極リングの表面が粗面化して正極合剤との接触面積が大
きくなり、電池の内部抵抗を低下させることができる。
したがってかかる正極リングを用いることによって、偏
平型リチウム電池の放電容量を向上させることができ
る。By making the surface roughness of the positive electrode ring average roughness of 5 μm to 50 μm by the production method of the present invention, the surface of the positive electrode ring is roughened and the contact area with the positive electrode mixture is increased, so that the internal Resistance can be reduced.
Therefore, by using such a positive electrode ring, the discharge capacity of the flat type lithium battery can be improved.
【００１４】[0014]
（実施例１）本発明の正極リングの製造方法を図面を参
照して説明する。図１は本発明の正極リングの製造方法
の工程を順次説明する図で、（ａ）は上から見た図、
（ｂ）は側面から見た図である。(Example 1) A method for manufacturing a positive electrode ring according to the present invention will be described with reference to the drawings. FIG. 1 is a view for sequentially explaining the steps of a method for manufacturing a positive electrode ring according to the present invention, wherein FIG.
(B) is the figure seen from the side.
【００１５】板厚０．１５ｍｍのステンレス鋼箔板を用
い、図１に示すように、最初に位置決めの穴あけ工程に
よりパイロット穴あけ１を行う。次に断面略Ｌ字状の内
径部分にあたる位置に穴あけ２を行う、次にバーリング
工程３により金属箔板を突出させる、次に断面略Ｌ字状
に成形４を行う、最後にトリム５を行い正極リングを金
属箔板から切断する。Using a stainless steel foil plate having a thickness of 0.15 mm, pilot drilling 1 is first performed in a positioning drilling step as shown in FIG. Next, a hole 2 is formed at a position corresponding to an inner diameter portion of a substantially L-shaped cross section, then a metal foil plate is protruded by a burring step 3, a molding 4 is performed to have a substantially L-shaped cross section, and finally a trim 5 is performed. Cut the positive electrode ring from the metal foil plate.
【００１６】以上の工程により、外径１６ｍｍ，表面粗
さが平均粗さ５μｍの正極リングを製造し、この正極リ
ングを使用して、以下のようにして偏平型リチウム電池
を製作した。Through the above steps, a positive electrode ring having an outer diameter of 16 mm and an average surface roughness of 5 μm was manufactured, and a flat lithium battery was manufactured as follows using this positive electrode ring.
【００１７】正極活物質としてＭｎＯ2 をこの正極リン
グに充填し、負極活物質として金属リチウム、電解液と
してプロピレンカーボネートおよび１，２−ジメトキシ
エタンの混合溶媒にＬｉＣｌＯ4 を溶解させたものをそ
れぞれ使用し、外径２０ｍｍ、高さ３．２ｍｍの電池を
組み立てた。この電池を実施例１の電池とする。The positive electrode ring is filled with MnO 2 as a positive electrode active material, and a material obtained by dissolving LiClO 4 in a mixed solvent of metallic lithium as a negative electrode active material, propylene carbonate and 1,2-dimethoxyethane as an electrolytic solution is used. Then, a battery having an outer diameter of 20 mm and a height of 3.2 mm was assembled. This battery is referred to as the battery of Example 1.
【００１８】（実施例２）次に、上記した正極リング製
造方法によって、外径１６ｍｍ，表面粗さが平均粗さ２
５μｍの正極リングを製造し、この正極リングを使用し
て実施例１と同様な条件で電池組立を行った。この電池
を実施例２とする。(Example 2) Next, according to the above-described method for manufacturing a positive electrode ring, the outer diameter was 16 mm, and the surface roughness was 2 mm.
A 5 μm positive electrode ring was manufactured, and a battery was assembled using the positive electrode ring under the same conditions as in Example 1. This battery is referred to as Example 2.
【００１９】（実施例３）さらに、同様にして、外径１
６ｍｍ，表面粗さが平均粗さ５０μｍの正極リングを製
造し、実施例１と同様な条件で電池組立を行った。この
電池を実施例３とする。なお、表面粗さの測定はＪＩＳ
Ｂ００６５１に規定する触針式表面粗さ測定器を用い
て行った。(Embodiment 3) Further, in the same manner,
A positive electrode ring having a thickness of 6 mm and an average surface roughness of 50 μm was manufactured, and a battery was assembled under the same conditions as in Example 1. This battery is referred to as Example 3. The measurement of surface roughness is based on JIS
The measurement was carried out using a stylus type surface roughness measuring instrument specified in B00651.
【００２０】（比較例１）図２は従来の正極リングの製
造方法の工程を順次説明する図で、（ａ）は上から見た
図、（ｂ）は側面から見た図である。(Comparative Example 1) FIGS. 2A and 2B are views for sequentially explaining the steps of a conventional method for manufacturing a positive electrode ring, wherein FIG. 2A is a view from the top, and FIG. 2B is a view from the side.
【００２１】図２に示されるように、従来の方法は、位
置決めの穴あけ工程によりパイロット穴あけ１を行い、
次に内側ランス６を行い、次に外側ランス７を行う。次
に絞り工程８により凹状に絞り上げ、次に断面略Ｌ字状
になるように内径の穴あけ２を行い、最後にトリムを行
って正極リングを母材から切断する。この工程により製
造したものを比較例とする。As shown in FIG. 2, the conventional method performs pilot drilling 1 in a positioning drilling step,
Next, the inner lance 6 is performed, and then the outer lance 7 is performed. Next, it is squeezed up into a concave shape by a squeezing step 8, and then a hole 2 having an inner diameter is made so as to have a substantially L-shaped cross section, and finally trimming is performed to cut the positive electrode ring from the base material. The one manufactured by this step is a comparative example.
【００２２】この製造方法によって、外径１６ｍｍ，表
面粗さが平均粗さ０．２μｍの正極リングを製造し、こ
の正極リングを用いて実施例１と同様な条件で電池組立
を行った。この電池を比較例１の電池とする。According to this manufacturing method, a positive electrode ring having an outer diameter of 16 mm and a surface roughness of 0.2 μm in average roughness was manufactured, and a battery was assembled using this positive electrode ring under the same conditions as in Example 1. This battery is referred to as a battery of Comparative Example 1.
【００２３】（比較例２）さらに、Ｎｉメッキを施した
金属箔板を使用し、上記比較例の製造方法で製造した正
極リングを、正極リング以外の条件を実施例１と同様な
条件で電池組立を行った。この電池を比較例２とする。(Comparative Example 2) Further, using a metal foil plate plated with Ni, a positive electrode ring manufactured by the manufacturing method of the above comparative example was replaced with a battery under the same conditions as in Example 1 except for the positive electrode ring. Assembled. This battery is referred to as Comparative Example 2.
【００２４】正極リング製造方法の違いによる、必要な
金属箔板のスリット幅は、図１および図２に示すよう
に、本発明では１８．０ｍｍ、比較例では２４．０ｍｍ
である。すなわち、外径１６．０ｍｍの正極リングを作
成するには、図２の比較例の方式を使用すると２４．０
ｍｍの材料スリット幅が必要であったのに対して、図１
の本発明の製造方法では１８．０ｍｍのスリット幅で実
施することができ、歩留まりが向上する。次に、上記し
た実施例および比較例の各電池を用いて初度の内部抵抗
を測定した結果を表１に示す。As shown in FIGS. 1 and 2, the required slit width of the metal foil plate due to the difference in the method of manufacturing the positive electrode ring is 18.0 mm in the present invention and 24.0 mm in the comparative example.
It is. That is, in order to produce a positive electrode ring having an outer diameter of 16.0 mm, the method of the comparative example in FIG.
mm material slit width was required.
According to the manufacturing method of the present invention, the slit width can be reduced to 18.0 mm, and the yield is improved. Next, Table 1 shows the results of the initial measurement of the internal resistance using the batteries of the above-described Examples and Comparative Examples.
【００２５】[0025]
【表１】 [Table 1]
【００２６】表１に示すように、表面粗さが粗いほど内
部抵抗は減少していく方向にある。また、Ｎｉメッキを
行ったものも表面を粗くしたものと同様に内部抵抗が減
少している。次に、実施例および比較例の各電池を６０
℃に１００日間貯蔵したときの内部抵抗を表２に示す。As shown in Table 1, the internal resistance tends to decrease as the surface roughness increases. Also, the internal resistance of Ni-plated metal is reduced as in the case of roughened metal. Next, each of the batteries of Examples and Comparative Examples was
Table 2 shows the internal resistance when stored at 100C for 100 days.
【００２７】[0027]
【表２】 [Table 2]
【００２８】表１に示す初度の内部抵抗では、表面粗さ
を粗くした本発明の実施例１〜３と、Ｎｉメッキを施し
た比較例２とでは、同等の内部抵抗であったが、表２に
示すように、貯蔵を行った場合には、比較例２の電池は
内部抵抗が著しき上昇している。これは、貯蔵したこと
によりＮｉが電解液中に溶出し、負極活物質表面に析出
して内部抵抗が上昇したものと考えられる。また、表面
粗さが粗いほど、貯蔵後も内部抵抗が低い結果になって
いる。In the initial internal resistance shown in Table 1, the same internal resistance was obtained in Examples 1 to 3 of the present invention in which the surface roughness was increased and Comparative Example 2 in which Ni plating was performed. As shown in FIG. 2, when storage was performed, the internal resistance of the battery of Comparative Example 2 was significantly increased. This is considered to be due to the fact that Ni was eluted into the electrolytic solution due to the storage and precipitated on the surface of the negative electrode active material to increase the internal resistance. Also, the higher the surface roughness, the lower the internal resistance after storage.
【００２９】さらに、内部抵抗を低下させるために伸延
度を上げて平均粗さ８０μｍ，１００μｍの表面粗さの
正極リングの製造を行ったが、平均粗さ５０μｍ以上の
表面粗さでは、正極リングの肉厚が薄くなり、強度が低
下して、正極活物質を充填したときに正極リングが割れ
てしまうという問題が発生した。また、表面粗さが平均
粗さ５μｍ以下の正極リングを作成するには、本発明の
製造方法では金属箔板を突出させるため非常に困難であ
った。よって、表面粗さは平均粗さ５μｍ〜５０μｍが
最も望ましい。Further, in order to reduce the internal resistance, the elongation was increased to produce a positive electrode ring having an average roughness of 80 μm and a surface roughness of 100 μm. Of the positive electrode ring is thinned, the strength is reduced, and the positive electrode ring is broken when filled with the positive electrode active material. In addition, it was very difficult to produce a positive electrode ring having a surface roughness of 5 μm or less on average because the metal foil plate was projected by the production method of the present invention. Therefore, the average surface roughness is most desirably 5 μm to 50 μm.
【００３０】[0030]
【発明の効果】以上説明したように、本発明の製造方法
で製造した正極リングを使用すれば、正極合剤との接触
面積が大きくなるので、電池内部抵抗が減少し、導電性
の向上した偏平型リチウム電池を得ることができる。ま
た、本発明の製造方法によれば、スリット幅の狭い金属
箔板で正極リングを製造することが可能なので、歩留ま
りの向上が図れる。As described above, when the positive electrode ring manufactured by the manufacturing method of the present invention is used, the contact area with the positive electrode mixture is increased, so that the internal resistance of the battery is reduced and the conductivity is improved. A flat lithium battery can be obtained. Further, according to the manufacturing method of the present invention, it is possible to manufacture the positive electrode ring with a metal foil plate having a narrow slit width, so that the yield can be improved.
【図１】本発明の正極リングの製造方法を示す図で、
（ａ）は上面図、（ｂ）は側面図。FIG. 1 is a view showing a method for manufacturing a positive electrode ring of the present invention,
(A) is a top view, (b) is a side view.
【図２】従来の正極リングの製造方法を示す図で、
（ａ）は上面図、（ｂ）は側面図。FIG. 2 is a view showing a conventional method for manufacturing a positive electrode ring,
(A) is a top view, (b) is a side view.
【図３】従来の扁平型リチウム電池の部分断面図。FIG. 3 is a partial cross-sectional view of a conventional flat lithium battery.
１…パイロット穴あけ、２…内径穴あけ、３…バーリン
グ、４…成形、５…トリム、６…内側ランス、７…外側
ランス、８…絞り、１１…正極容器、１２…正極合剤、
１３…正極リング、１４…セパレーター、１５…負極活
物質、１６…負極容器。DESCRIPTION OF SYMBOLS 1 ... Pilot drilling, 2 ... Inner diameter drilling, 3 ... Burring, 4 ... Molding, 5 ... Trim, 6 ... Inner lance, 7 ... Outer lance, 8 ... Squeezing, 11 ... Positive container, 12 ... Positive electrode mixture,
13: positive electrode ring, 14: separator, 15: negative electrode active material, 16: negative electrode container.
Claims (2)
リングを備えた扁平型リチウム電池において、該断面略
Ｌ字状の正極リングの表面粗さが平均粗さ５μｍ〜５０
μｍであることを特徴とする扁平型リチウム電池。In a flat lithium battery provided with a positive electrode ring having a substantially L-shaped cross section adjacent to a positive electrode mixture, the surface roughness of the positive ring having a substantially L-shaped cross section has an average roughness of 5 μm to 50 μm.
A flat-type lithium battery having a thickness of μm.
後、断面略Ｌ字状に成形することを特徴とする扁平型リ
チウム電池の正極リングの製造方法。2. A method for manufacturing a positive electrode ring of a flat lithium battery, comprising: projecting a metal foil plate from an upper surface or a lower surface, and then forming the metal foil plate into a substantially L-shaped cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5739497A JP3410319B2 (en) | 1997-03-12 | 1997-03-12 | Flat lithium battery and method for manufacturing positive electrode ring thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5739497A JP3410319B2 (en) | 1997-03-12 | 1997-03-12 | Flat lithium battery and method for manufacturing positive electrode ring thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10255773A true JPH10255773A (en) | 1998-09-25 |
| JP3410319B2 JP3410319B2 (en) | 2003-05-26 |
Family
ID=13054417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5739497A Expired - Fee Related JP3410319B2 (en) | 1997-03-12 | 1997-03-12 | Flat lithium battery and method for manufacturing positive electrode ring thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3410319B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005347154A (en) * | 2004-06-04 | 2005-12-15 | Matsushita Electric Ind Co Ltd | Coin-shaped lithium primary battery |
| US7521151B2 (en) * | 2003-09-26 | 2009-04-21 | Samsung Sdi Co., Ltd. | Rechargeable lithium battery with specific surface roughness of positive electrode and/or negative electrode |
| JP2012256571A (en) * | 2011-06-10 | 2012-12-27 | Hitachi Maxell Energy Ltd | Flat battery |
-
1997
- 1997-03-12 JP JP5739497A patent/JP3410319B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7521151B2 (en) * | 2003-09-26 | 2009-04-21 | Samsung Sdi Co., Ltd. | Rechargeable lithium battery with specific surface roughness of positive electrode and/or negative electrode |
| JP2005347154A (en) * | 2004-06-04 | 2005-12-15 | Matsushita Electric Ind Co Ltd | Coin-shaped lithium primary battery |
| JP2012256571A (en) * | 2011-06-10 | 2012-12-27 | Hitachi Maxell Energy Ltd | Flat battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3410319B2 (en) | 2003-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5543250A (en) | Electrode for storage battery and method for producing the same | |
| US6979517B2 (en) | Electrode plate for cell and method for manufacturing the same | |
| US6333124B1 (en) | Metal outer can for a battery and method of manufacturing same | |
| US6444366B1 (en) | Non-sintered electrode and method of manufacturing same | |
| JP3410319B2 (en) | Flat lithium battery and method for manufacturing positive electrode ring thereof | |
| US6180285B1 (en) | Exposed conductive core battery | |
| JP2000048823A (en) | Non-sintering type electrode and manufacture thereof | |
| JP4873862B2 (en) | Nonaqueous electrolyte secondary battery and manufacturing method thereof | |
| CN112753121B (en) | All-solid battery | |
| JP2798753B2 (en) | Non-aqueous electrolyte secondary battery | |
| JP3749010B2 (en) | Method for producing non-aqueous electrolyte battery | |
| JP2001135308A (en) | Flat battery and method for preparing pellet ring of flat battery | |
| JPH1074538A (en) | Lithium ion secondary battery | |
| JPH0412610Y2 (en) | ||
| US20220190412A1 (en) | Holder for an electrode of a button battery and a battery provided therewith | |
| JPH10199502A (en) | Separator and battery using the same | |
| JPH10334878A (en) | Alkaline battery and its manufacture | |
| JPS6247945A (en) | Cell | |
| JPS6125172Y2 (en) | ||
| JP3151971B2 (en) | Manufacturing method of battery and electrode plate | |
| JP2754773B2 (en) | Manufacturing method of cylindrical lithium battery | |
| JPH10162815A (en) | Sealed nickel hydrogen battery | |
| JPS6247944A (en) | Sealed type battery | |
| JPH04328276A (en) | Manufacture of lithium alloy negative electrode for nonaqueous electrolyte secondary battery | |
| JPH10116621A (en) | Base of electrode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090320 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100320 Year of fee payment: 7 |
|
| LAPS | Cancellation because of no payment of annual fees |