JPS6212060A - Button-type battery - Google Patents
Button-type batteryInfo
- Publication number
- JPS6212060A JPS6212060A JP60151159A JP15115985A JPS6212060A JP S6212060 A JPS6212060 A JP S6212060A JP 60151159 A JP60151159 A JP 60151159A JP 15115985 A JP15115985 A JP 15115985A JP S6212060 A JPS6212060 A JP S6212060A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- battery case
- side wall
- distance
- sealing
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical group [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001923 silver oxide Inorganic materials 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011787 zinc oxide 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
-
- 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】
〔産業上の利用分野〕
この発明はボタン形電池に関する。さらに詳しくは、封
口金型からの取り出しが容易で、生産効率の向上が図り
得ると共に、封口金型からの取出時の押圧による電池変
形がなく、耐漏液性が優れたボタン形電池に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a button battery. More specifically, the present invention relates to a button-shaped battery that is easy to take out from the sealing mold, improves production efficiency, does not deform due to pressure when taken out from the sealing mold, and has excellent leakage resistance.
従来からも、ボタン形電池の形状については、図面上程
々の態様に描かれているが、現実に生産されているボタ
ン形電池は、第４図に示すように、電池ケース１の底部
１ｂと側壁１ｃとの間の折曲曲面部１ｄの側壁１ｃ側の
開始点Ｑが電池ケース１の底部１ｂの内面の高さより低
い位置にあった。Conventionally, the shape of button-type batteries has been drawn in a reasonable manner on drawings, but button-type batteries actually produced have a shape that is similar to that of the bottom 1b of the battery case 1, as shown in FIG. A starting point Q on the side wall 1c side of the bent surface portion 1d between the battery case 1 and the side wall 1c was located at a position lower than the height of the inner surface of the bottom portion 1b of the battery case 1.
このような電池では、封口金型から電池を取り出す際に
大きな力が必要となり、そのため封口金型からの電池取
出速度を速くすることができず、生産性を低下させる原
因になっていた。また、封口金型からの取り出しに大き
な力を要するということは、封口後の電池に大きな外力
を加えることになり、そのため、たとえ封口が正常かつ
適正に行われていたとしても、電池に変形を生じさせ、
耐漏液性を低下させる原因となっていた。In such a battery, a large force is required to remove the battery from the sealing mold, which makes it impossible to increase the speed of removing the battery from the sealing mold, which causes a decrease in productivity. In addition, the fact that a large force is required to remove the battery from the sealing mold means that a large external force is applied to the battery after sealing, which may cause deformation of the battery even if the sealing is done normally and properly. cause
This caused a decrease in leakage resistance.
すなわち、ボタン形電池の封口は、一般に第５図に示す
ように、周辺折り返し部に環状のガスケット６を嵌合し
、中央部の凹所に負極剤４と電解液の大半量を内填させ
た封口板２をノックアウトピン１１上にのせ、正極合剤
３と電解液の一部ならびにセパレータ５を内填した電池
ケース１の底部１ｂを電磁石などの適宜の保持機構を備
えた上ポンチ１２で保持し、上ポンチ１２を下降させて
、電池ケース１を下降させ、第６図に示すように、電池
ケース１をその開口部側から封口板２に嵌合しつつ封口
金型１３内に挿入する。That is, as shown in FIG. 5, button-type batteries are generally sealed by fitting an annular gasket 6 to the circumferential folded part and filling a recess in the center with most of the anode material 4 and electrolyte. The sealed sealing plate 2 is placed on the knockout pin 11, and the bottom part 1b of the battery case 1 containing the positive electrode mixture 3, part of the electrolyte, and the separator 5 is punched using an upper punch 12 equipped with an appropriate holding mechanism such as an electromagnet. 6, lower the upper punch 12 to lower the battery case 1, and insert the battery case 1 from the opening side into the sealing mold 13 while fitting it into the sealing plate 2. do.
封口金型１３の内面は、開口部側はラッパ状に広かって
おり、底部側は電池封口時の形状にあわせて曲線を陥き
つつ漸次小径となっており、中間部は電池の外周部に合
わせてほぼ直線になっている。The inner surface of the sealing mold 13 is wide in the shape of a trumpet on the opening side, and the bottom side is curved to match the shape when sealing the battery and gradually becomes smaller in diameter. Together they form an almost straight line.
上ポンチ１２をさらに下降させ、電池をさらに封口金型
１３内に押し込むと、第７図に示すように電池ケース１
の開口端部１ａは、封口金型１３の内面との接触によっ
て内方に締め付けられ、封口金型１３の内面形状にそっ
て折り曲げられて封口が行われる。つぎに、ノックアウ
トピン１１を上昇させて、第８図に示すように、電池１
４を上方に押し出すことにより、封口金型１３からの電
池取出が行われる。When the upper punch 12 is further lowered and the battery is further pushed into the sealing mold 13, the battery case 1 is removed as shown in FIG.
The open end 1a is tightened inward by contact with the inner surface of the sealing mold 13, and is bent along the inner surface shape of the sealing mold 13 to perform sealing. Next, raise the knock-out pin 11 and move the battery 1 as shown in FIG.
By pushing out the battery 4 upward, the battery is removed from the sealing mold 13.
この際、前述のように、電池ケース１の底部１ｂと側壁
１ｃとの間の折曲曲面部１ｄの側壁ｌｃ側の開始点Ｑが
電池ケース１の底部１ｂの内面の高さより低い位置にあ
ると、該開始点Ｑから電池ケース１の底部１ｂの内面の
高さと同じ高さになるまでの部分の封口金型１３の内面
を押圧する力が大きく、しかも該部分は電池ケースｌの
底部１ｂによって支えられているため、電池１４を封口
金型１３から取り出す際に大きな力を要する原因になっ
ている。たとえば封口金型１３から電池１４を１０ｍｍ
／ｍｉｎの取出速度で取り出すとき電池１個当たり２６
ｋｇの力を必要とした。At this time, as described above, the starting point Q on the side wall lc side of the bent surface portion 1d between the bottom portion 1b and the side wall 1c of the battery case 1 is located at a position lower than the height of the inner surface of the bottom portion 1b of the battery case 1. Then, the force pressing the inner surface of the sealing mold 13 is large in a portion from the starting point Q to the same height as the inner surface of the bottom 1b of the battery case 1, and furthermore, this portion is at the same height as the inner surface of the bottom 1b of the battery case 1. This causes a large amount of force to be required when taking out the battery 14 from the sealing mold 13. For example, the battery 14 is separated from the sealing mold 13 by 10 mm.
26 per battery when taken out at a removal speed of /min.
kg of force was required.
この発明は上述した従来技術の問題点を解決するもので
、電池ケース１の底部１ｂと側壁１ｃとの間の折曲曲面
部１ｄの側壁１ｃ側の開始点Ｑを底部１ｂの内面より高
い位置にし、かつ電池ケース１の底部１ｂの外面に接す
る水平線Ｈと電池ケース１の側壁１ｃの外周面に接する
垂直線Ｍとの交点Ｐから上記折曲曲面部１ｄの側壁１ｃ
側の開始点Ｑまでの距！＠１１を、上記交点Ｐから上記
折曲曲面部１ｄの底部１ｂ側の開始点Ｓまでの距Ｎ１２
の１．５倍以上にすることによって、締付力の低下を招
くことなく、封口金型からの取り出しを容易にし、生産
性を高めると共に、封口金型からの取出時の電池変形が
生じないようにして耐漏液性を向上させたものである。This invention solves the problems of the prior art described above, and sets the starting point Q on the side wall 1c side of the bent surface portion 1d between the bottom portion 1b and the side wall 1c of the battery case 1 to a position higher than the inner surface of the bottom portion 1b. and the side wall 1c of the bent surface portion 1d from the intersection point P of the horizontal line H that is in contact with the outer surface of the bottom portion 1b of the battery case 1 and the vertical line M that is in contact with the outer peripheral surface of the side wall 1c of the battery case 1.
Distance to side starting point Q! @11 as the distance N12 from the intersection P to the starting point S on the bottom 1b side of the bent surface portion 1d.
By making it 1.5 times or more of In this way, leakage resistance is improved.
すなわち、電池ケース１の折曲曲面部１ｄの側壁１ｃ側
の開始点Ｑを電池ケースｌの底部１ｂの内面の位置より
高くすることによって、封口後の電池取出時に、電池ケ
ース１の底部１ｂが封口金型１３の内面を強く押圧する
ことがなくなり、距ＲＩＢを距離ａ２の１．５倍以上と
することによって、封口時に電池ケース１の側壁１ｃが
封口金型１３の内面を押圧する力が小さくなり、上ポン
チ１２の下降する力が電池ケース１の開口端部１ａを締
め付ける力として効率よく働いて、締付力が従来にも増
して向上し、これが前述の開始点Ｑを電池ケース１の底
部１ｂの内面の位置より高くしたことと相乗的に働いて
、封口金型１３からの電池取出がさらに容易になり、生
産性が向上すると共に、封口金型からの電池取出時に電
池変形が生じなくなって耐４液性が向上するのである。That is, by making the starting point Q on the side wall 1c side of the bent surface portion 1d of the battery case 1 higher than the inner surface of the bottom portion 1b of the battery case l, the bottom portion 1b of the battery case 1 is By eliminating the need to forcefully press the inner surface of the sealing mold 13, and by setting the distance RIB to 1.5 times or more the distance a2, the force with which the side wall 1c of the battery case 1 presses against the inner surface of the sealing mold 13 during sealing is reduced. The lowering force of the upper punch 12 acts efficiently as a force to tighten the open end 1a of the battery case 1, and the tightening force is improved more than ever before, which causes the above-mentioned starting point Q to Working synergistically with the position of the bottom part 1b being higher than the inner surface of the bottom part 1b, it becomes easier to take out the battery from the sealing mold 13, improving productivity and preventing battery deformation when taking out the battery from the sealing mold. As a result, the four-liquid resistance is improved.
つぎに、本発明の実施例について説明する。 Next, examples of the present invention will be described.
第１図は本発明のボタン形電池の一実施例を示す断面図
であり、この実施例に示す電池は外径７゜８ｍ１１１、
高さ３．６ｍｍの酸化銀電池である。図中、１は電池ケ
ースで、この電池ケース１は正極端子を兼ねている。２
は封口板で、この封口板２は負極端子を兼ねている。３
は工種合剤で、酸化銀（Ａｇ２０）を活物質とし、これ
に少量の二酸化マンガンと早船を添加した混合物の粉末
を加圧成形して形成したものである。４は亜鉛を活物質
とする負極剤であり、５はセパレータで、微孔性ポリプ
ロピレンフィルムとセロハンとビニロン−レーヨン混抄
紙とを積み重ねてなるものである。６はナイロン製で環
状のガスケットであり、この電池の電解液としては酸化
亜鉛を溶解させた３５％水酸化カリウム水溶液が使用さ
れている。そして、この電池は電池ケース１の開口端部
１ａの内方への締め付けにより、ガスケット６を封口板
２に圧接させて電池内部を密閉構造にしている。FIG. 1 is a sectional view showing an embodiment of the button-shaped battery of the present invention, and the battery shown in this embodiment has an outer diameter of 7°8 m111,
It is a silver oxide battery with a height of 3.6 mm. In the figure, 1 is a battery case, and this battery case 1 also serves as a positive electrode terminal. 2
is a sealing plate, and this sealing plate 2 also serves as a negative electrode terminal. 3
This is a composite material prepared by pressure molding a powder of a mixture of silver oxide (Ag20) as an active material and a small amount of manganese dioxide and fast boat added to it. 4 is a negative electrode agent containing zinc as an active material, and 5 is a separator made by laminating microporous polypropylene film, cellophane, and vinylon-rayon mixed paper. 6 is a ring-shaped gasket made of nylon, and a 35% potassium hydroxide aqueous solution in which zinc oxide is dissolved is used as the electrolyte for this battery. In this battery, by tightening the open end 1a of the battery case 1 inward, the gasket 6 is brought into pressure contact with the sealing plate 2, so that the inside of the battery is sealed.
電池ケース１は厚さｏ、２５ｍｍの冷間圧延鋼板にニッ
ケルメッキを施してなり、第２図に詳示するように、底
部１ｂと側壁１ｃとの間の折曲曲面部１ｄの側壁１ｃ側
の開始点Ｑは、電池ケース１の底部１ｂの内面より高い
位置にあり、かつ電池ケース１の底部１ｂの外面に接す
る水平線Ｈと電池ケース１の側壁１ｃの外周面に接する
垂直線Ｍとの交点Ｐから前記折曲曲面部１ｄの側壁Ｉ
Ｃ１ｕ１１の開始点Ｑまでの距離Ｐ１が、上記交点Ｐか
ら上記折曲曲面部１ｄの底部１ｂ側の開始点Ｓまでの距
離１２の１．５倍以上になるようにされている。本実施
例では、上記交点Ｐから折曲曲面部１ｄの側壁１ｃ側の
開始点Ｑまでの距離１１が３．１１で、上記交点Ｐから
上記折曲曲面部１ｄの底部１ｂ側の開始点Ｓまでの距離
１２が１．７ｍｍであって、距離７！１は距ｍで２の約
１．８倍である。The battery case 1 is made of a nickel-plated cold-rolled steel plate with a thickness o and 25 mm, and as shown in detail in FIG. 2, the side wall 1c side of the bent surface 1d between the bottom 1b and the side wall 1c The starting point Q is located at a higher position than the inner surface of the bottom 1b of the battery case 1, and is located between a horizontal line H that is in contact with the outer surface of the bottom 1b of the battery case 1 and a vertical line M that is in contact with the outer peripheral surface of the side wall 1c of the battery case 1. From the intersection P to the side wall I of the bent surface portion 1d
The distance P1 from the starting point Q of C1u11 is set to be at least 1.5 times the distance 12 from the intersection P to the starting point S on the bottom 1b side of the bent surface portion 1d. In this embodiment, the distance 11 from the intersection P to the starting point Q on the side wall 1c side of the folded surface portion 1d is 3.11, and the distance 11 from the intersection P to the starting point S on the bottom portion 1b side of the bent surface portion 1d is 3.11. The distance 12 to 1 is 1.7 mm, and the distance 7!1 is about 1.8 times the distance 2 in m.
本発明において、交点Ｐから折曲曲面部１ｄの側壁ｌｃ
側の開始点Ｑまでの距離１１と、交点Ｐから折曲曲面部
１ｄの底部１ ｂ ｆｌ’Ｊの開始点Ｓまでの距離１２
との関係を、前記のごとく、１１≧１．５ＸＡ２にして
いるのは、交点Ｐから折曲曲面部１ｄの底部１ｂ側の開
始点Ｓまでの距離１２が上記関係より大きくなると、封
口時に電池ケース１の側壁１ｃが封口金型１３の内面を
押出する力が大きくなって上ポンチ１２の下降する力が
電池ケース１の開口端部１ａを締め付ける力に有効に生
かされなくなるからである。そして、交点Ｐから折曲曲
面部１ｄの側壁１ｃ側の開始点Ｑまでの距Ｍ１１と交点
Ｐから折曲曲面部１ｄの底部１ｂ側の開始点Ｓまでの距
離ｅ２との関係において、１１がβ２の１．８倍以上と
なるのが好ましい。In the present invention, the side wall lc of the bent surface portion 1d from the intersection P
Distance 11 to the side starting point Q, and distance 12 from the intersection P to the starting point S of the bottom 1 b fl'J of the bent surface section 1d.
As mentioned above, the reason why the relationship is set to 11≧1.5 This is because the force with which the side wall 1c of the case 1 pushes out the inner surface of the sealing mold 13 increases, and the downward force of the upper punch 12 cannot be effectively utilized as a force for tightening the open end 1a of the battery case 1. Then, in the relationship between the distance M11 from the intersection P to the starting point Q on the side wall 1c side of the bending surface section 1d and the distance e2 from the intersection P to the starting point S on the bottom 1b side of the bending surface section 1d, 11 is It is preferable that it is 1.8 times or more of β2.
封口板２は、厚さ０．３１の銅−ステンレス鋼−ニノケ
ルクランド板を絞り加工によって周辺折り返し部を有す
る形状に形成したもので、銅面側を電池内部側にして使
用されている。The sealing plate 2 is formed by drawing a copper-stainless steel-Nino Kerkland plate with a thickness of 0.31 mm into a shape having a peripheral folded portion, and is used with the copper side facing inside the battery.
上記実施例の電池を前述したように第５〜８図にしたが
って封口し、電池１４を封口金型１３から取出速度１０
ｍｍ／ｍｉｎで取り出したときに要した力は２０ｋｉｒ
であった。これは第４図に示すような従来構造の電池を
封口金型から取り出すのに要する力２６に、に比べて６
ｋｇも少なかった。The battery of the above embodiment was sealed as described above in accordance with FIGS. 5 to 8, and the battery 14 was removed from the sealing mold 13 at a speed of 10
The force required to take it out at mm/min is 20kir.
Met. This is compared to the force 26 required to take out a battery of conventional structure from the sealing mold as shown in Figure 4.
It was also less kg.
なお、上記封口により、電池ケース１の折曲曲面部１ｄ
の形状は若干変形し、折曲曲面部１ｄの半径いわゆるＲ
が封口後は封口前に比べて若干小さくなる。これを明ら
かにするために、第１〜２回に示す電池を作製するにあ
たって使用した電池ケースの封口前の快感を第３図に示
す。実施例に示すような距離β１が距離ａ２の約１．８
倍である電池ケース１の封口後のＲは０．３５ｍｍであ
るが、これを作るためには、封口前のＲは０．５ｍｍに
する必要があった。Note that due to the above-mentioned sealing, the bent surface portion 1d of the battery case 1
The shape of is slightly deformed, and the radius of the bent surface portion 1d is so-called R.
is slightly smaller after sealing than before sealing. In order to clarify this, FIG. 3 shows the pleasant feeling before sealing the battery case used in producing the batteries shown in the first and second tests. As shown in the example, the distance β1 is approximately 1.8 of the distance a2.
The R of the battery case 1 after sealing is 0.35 mm, which is double the size of the battery case 1, but in order to make this, the R before sealing had to be 0.5 mm.
上記知見やその他の実験の繰り返しから、封口後の電池
において、１１≧１．５×β２とするには、封口前の電
池ケース１の折曲曲面部１ｄのＲを電池ケース１の素材
厚さに対して２倍以上にしておくことが必要であること
が判明した。From the above findings and repeating other experiments, in order to satisfy 11≧1.5×β2 in the battery after sealing, the R of the bent surface portion 1d of the battery case 1 before sealing should be adjusted to the material thickness of the battery case 1. It has been found that it is necessary to increase the amount by at least twice the amount.
前述したように、第４図に示すような電池ケースｌの折
曲曲面部１ｄの側壁ｌｃ側の開始点Ｑが電池ケースｌの
底部１ｂの高さより低い位置にある電池は、封口後の封
口金型１３からの取り出しに取出速度１０ｍｍ／ｍｉｎ
で２６ｋｇの力を要し、前記実施例の場合より６ ｋｇ
大きい力を必要とした。なお、この電池における封口前
の電池ケース１の折曲曲面部１ｄのＲは０．４ｍｍで、
電池ケースｌの素材厚みは０．２５１であつたが、封口
により封口後の折曲曲面部１ｄのＲは０．３闘となって
いた。As mentioned above, a battery whose starting point Q on the side wall lc side of the bent surface portion 1d of the battery case l as shown in FIG. Take-out speed 10 mm/min for taking out from the mold 13
This requires a force of 26 kg, which is 6 kg more than in the case of the previous example.
It required a lot of force. Note that the R of the bent surface portion 1d of the battery case 1 before sealing in this battery is 0.4 mm,
The material thickness of the battery case l was 0.251, but the R of the bent surface portion 1d after sealing was 0.3 mm.
つぎに、前記実施例の電池と第４図に示すような従来電
池を各５０個ずつ４５℃、相対湿度９０％の雰囲気中に
６０日間貯蔵して耐漏液性を調べたところ、従来電池は
試験に供した５０個の電池のうち５（円に４液が発生し
たが、本発明の実施例の電池は、試験に供した５０個の
電池のうち漏液の発生したものは１個にすぎず、従来電
池に比べて耐漏液性が優れていた。Next, we stored 50 each of the batteries of the above example and the conventional battery as shown in Figure 4 in an atmosphere of 45°C and 90% relative humidity to examine their leakage resistance. Of the 50 batteries subjected to the test, 5 (4 times) leakage occurred; however, in the batteries of the embodiment of the present invention, only 1 out of the 50 batteries subjected to the test had leakage. However, the leakage resistance was superior to that of conventional batteries.
以上説明したように、本発明では、電池ケース１の底部
１ｂと側壁１ｃとの間の折曲曲面部１ｄの側壁１ｃ側の
開始点Ｑの位置を、電池ケース１の底部１ｂの内面の位
置より高くし、かつ電池ケース１の底部１ｂの外面に接
する水平線Ｈと電池ケース１の側壁１ｃの外周面に接す
る垂直線Ｍとの交点Ｐから上記折曲曲面部１ｄのＩＩＪ
璧ｌｃ側の開始点Ｑまでの距離１１を、上記交点Ｐから
上記折曲曲面部１ｄの底部１ｂ側の開始点Ｓまでの距離
β２に対して特定倍数以上にすることによって、電池ケ
ースの開口端部の締付力の低下を招くことなく、封口金
型から電池を取り出す際に要する力を小さくし、取出時
の作業性を改良すると共に、取出時に電池が変形を受け
るのを少なくして耐漏液性を向上させることができた。As explained above, in the present invention, the position of the starting point Q on the side wall 1c side of the bent surface portion 1d between the bottom portion 1b and the side wall 1c of the battery case 1 is set to the position of the starting point Q on the side wall 1c side. IIJ of the above-mentioned bent surface portion 1d from the intersection point P of the horizontal line H that is in contact with the outer surface of the bottom portion 1b of the battery case 1 and the vertical line M that is in contact with the outer peripheral surface of the side wall 1c of the battery case 1.
By making the distance 11 from the starting point Q on the side of the wall lc to a specific multiple of the distance β2 from the intersection P to the starting point S on the bottom 1b side of the bent surface portion 1d, the opening of the battery case is The force required to remove the battery from the sealing mold is reduced without reducing the clamping force at the end, improving workability during removal and reducing deformation of the battery during removal. We were able to improve leakage resistance.
第１図は本発明のボタン形電池の一実施例を示す断面図
、第２図は第１図の要部拡大図である。
第３図は第１図に示す電池に使用された電池ケースの封
口前の状態における要部拡大断面図である。第４図は従
来のボタン形電池の要部拡大断面図であり、第５〜８図
はボタン形電池の対日時の状態を工程順に示す断面図で
ある。
１・・・電池ケース、 １ａ・・・開口端部、 １ｂ・
・・底部、１ｃ・・・側壁、 １ｄ・・・折曲曲面部、
２・・・封口板、６・・・ガスケット、 Ｈ・・・水
平線、 Ｍ・・・垂直線、Ｐ・・・交点、 Ｑ・・・折
曲曲面部の側壁側の開始点、Ｓ・・・折曲曲面部の底部
側の開始点
特許出願人 日立マクセル株式会社
第 １ 図
第２図
第５図 第６ｔ２１
６１１、カ゛スデソト
１１・・・ノーｔ７ＴりＹビレ
１２・・・二ボ０ン七
１３・・・封口４！
１４・・・貨 ＳヒFIG. 1 is a sectional view showing an embodiment of the button-shaped battery of the present invention, and FIG. 2 is an enlarged view of the main part of FIG. 1. FIG. 3 is an enlarged sectional view of a main part of the battery case used in the battery shown in FIG. 1 in a state before being sealed. FIG. 4 is an enlarged cross-sectional view of a main part of a conventional button-type battery, and FIGS. 5-8 are cross-sectional views showing the state of the button-type battery in the order of steps. 1...Battery case, 1a...Opening end, 1b.
...bottom, 1c...side wall, 1d...bending curved surface part,
2... Sealing plate, 6... Gasket, H... Horizontal line, M... Vertical line, P... Intersection, Q... Starting point on the side wall side of the bent surface, S...・Starting point on the bottom side of the bent surface portion Patent applicant: Hitachi Maxell, Ltd. Figure 1 Figure 2 Figure 5 Figure 5 13... Sealing 4! 14... Currency S Hi
Claims (2)
電池ケース１と封口板２との間にガスケット６を配設し
て、電池ケース１の開口端部１ａの内方への締め付けに
よりガスケット６を封口板２に圧接させて封口するボタ
ン形電池において、電池ケース１の底部１ｂと側壁１ｃ
との間の折曲曲面部１ｄの側壁１ｃ側の開始点Ｑを電池
ケース１の底部１ｂの内面の位置より高くし、かつ電池
ケース１の底部１ｂの外面に接する水平線Ｈと電池ケー
ス１の側壁１ｃの外周面に接する垂直線Ｍとの交点Ｐか
ら前記折曲曲面部１ｄの側壁１ｃ側の開始点Ｑまでの距
離ｌ＿１が、上記交点Ｐから上記折曲曲面部１ｄの底部
１ｂ側の開始点Ｓまでの距離ｌ＿２の１．５倍以上であ
ることを特徴とするボタン形電池。(1) A power generation element is housed in the battery case 1 and the sealing plate 2,
In a button type battery, a gasket 6 is disposed between a battery case 1 and a sealing plate 2, and the gasket 6 is pressed against the sealing plate 2 by tightening the open end 1a of the battery case 1 inward to seal the battery. , the bottom 1b and side wall 1c of the battery case 1
The starting point Q on the side wall 1c side of the bent surface portion 1d between is set higher than the inner surface of the bottom 1b of the battery case 1, and the horizontal line H touching the outer surface of the bottom 1b of the battery case 1 and the horizontal line H of the battery case 1 The distance l_1 from the intersection point P with the vertical line M touching the outer peripheral surface of the side wall 1c to the starting point Q on the side wall 1c side of the bent curved surface portion 1d is the distance l_1 from the intersection point P to the bottom portion 1b side of the bent curved surface portion 1d. A button-shaped battery characterized in that the distance to the starting point S is 1.5 times or more the distance l_2.
Ｑまでの距離ｌ＿１が、交点Ｐから折曲曲面部１ｄの底
部１ｂ側の開始点Ｓまでの距離ｌ＿２の１．８倍以上で
ある特許請求の範囲第１項記載のボタン形電池。(2) The distance l_1 from the intersection P to the starting point Q on the side wall 1c side of the bent surface section 1d is 1.8 times the distance l_2 from the intersection P to the starting point S on the bottom 1b side of the bent surface section 1d. The button-shaped battery according to claim 1, which is as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60151159A JPH0665027B2 (en) | 1985-07-08 | 1985-07-08 | Button-type battery manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60151159A JPH0665027B2 (en) | 1985-07-08 | 1985-07-08 | Button-type battery manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6212060A true JPS6212060A (en) | 1987-01-21 |
| JPH0665027B2 JPH0665027B2 (en) | 1994-08-22 |
Family
ID=15512635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60151159A Expired - Lifetime JPH0665027B2 (en) | 1985-07-08 | 1985-07-08 | Button-type battery manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0665027B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751578A1 (en) * | 1995-05-05 | 1997-01-02 | Rayovac Corporation | Metal-air electrochemical cells |
| US5804327A (en) * | 1995-05-05 | 1998-09-08 | Rayovac Corporation | Thin walled electrochemical cell |
| US5904998A (en) * | 1995-05-05 | 1999-05-18 | Rayovac Corporation | Metal-air cathode can and electrochemical cell made therewith |
| US6205831B1 (en) | 1998-10-08 | 2001-03-27 | Rayovac Corporation | Method for making a cathode can from metal strip |
| US6248463B1 (en) | 1997-05-05 | 2001-06-19 | Rayovac Corporation | Metal-air cathode can and electrochemical cell made therewith |
| JP2005353339A (en) * | 2004-06-09 | 2005-12-22 | Matsushita Electric Ind Co Ltd | Flat electrochemical element |
-
1985
- 1985-07-08 JP JP60151159A patent/JPH0665027B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751578A1 (en) * | 1995-05-05 | 1997-01-02 | Rayovac Corporation | Metal-air electrochemical cells |
| US5658356A (en) * | 1995-05-05 | 1997-08-19 | Rayovac Corporation | Metal-air cathode can having reduced corner radius and electrochemical cells made therewith |
| US5804327A (en) * | 1995-05-05 | 1998-09-08 | Rayovac Corporation | Thin walled electrochemical cell |
| US5904998A (en) * | 1995-05-05 | 1999-05-18 | Rayovac Corporation | Metal-air cathode can and electrochemical cell made therewith |
| US5945234A (en) * | 1995-05-05 | 1999-08-31 | Rayovac Corporation | Metal-air cathode can having reduced corner radius and electrochemical cells made therewith |
| US6042957A (en) * | 1995-05-05 | 2000-03-28 | Rayovac Corporation | Thin walled electrochemical cell |
| US6248463B1 (en) | 1997-05-05 | 2001-06-19 | Rayovac Corporation | Metal-air cathode can and electrochemical cell made therewith |
| US6205831B1 (en) | 1998-10-08 | 2001-03-27 | Rayovac Corporation | Method for making a cathode can from metal strip |
| JP2005353339A (en) * | 2004-06-09 | 2005-12-22 | Matsushita Electric Ind Co Ltd | Flat electrochemical element |
| JP4701637B2 (en) * | 2004-06-09 | 2011-06-15 | パナソニック株式会社 | Flat electrochemical element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0665027B2 (en) | 1994-08-22 |
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