JPS5842947B2 - battery - Google Patents
batteryInfo
- Publication number
- JPS5842947B2 JPS5842947B2 JP53129574A JP12957478A JPS5842947B2 JP S5842947 B2 JPS5842947 B2 JP S5842947B2 JP 53129574 A JP53129574 A JP 53129574A JP 12957478 A JP12957478 A JP 12957478A JP S5842947 B2 JPS5842947 B2 JP S5842947B2
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene
- polypropylene
- batteries
- battery
- rubber
- 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
- -1 polyethylene Polymers 0.000 claims description 23
- 239000004698 Polyethylene Substances 0.000 claims description 12
- 229920000573 polyethylene Polymers 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 229920000554 ionomer Polymers 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 238000005336 cracking Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- YBDACTXVEXNYOU-UHFFFAOYSA-N C(F)(F)(F)F.[Li] Chemical compound C(F)(F)(F)F.[Li] YBDACTXVEXNYOU-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002798 polar solvent Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QDDVNKWVBSLTMB-UHFFFAOYSA-N [Cu]=O.[Li] Chemical compound [Cu]=O.[Li] QDDVNKWVBSLTMB-UHFFFAOYSA-N 0.000 description 1
- DUCFBDUJLLKKPR-UHFFFAOYSA-N [O--].[Zn++].[Ag+] Chemical compound [O--].[Zn++].[Ag+] DUCFBDUJLLKKPR-UHFFFAOYSA-N 0.000 description 1
- FBDMJGHBCPNRGF-UHFFFAOYSA-M [OH-].[Li+].[O-2].[Mn+2] Chemical compound [OH-].[Li+].[O-2].[Mn+2] FBDMJGHBCPNRGF-UHFFFAOYSA-M 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic material
-
- 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
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
-
- 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)
Description
【発明の詳細な説明】
本発明は、電池とくにボタン型電池、扁平形電池の封口
ガスケットに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing gasket for batteries, particularly button-type batteries and flat-type batteries.
従来より、一方の活物質を収納した金属製封口板と、他
方の活物質を収納した金属缶とを絶縁性の封口ガスケッ
トを介して封口一体化して構成されるボタン型電池の代
表的なものには、例えば二酸化マンガン−リチウム、酸
化銅−リチウム、フッ化カーボン−リチウム等のリチウ
ム電池、酸化銀−亜鉛、ニッケルー亜鉛等のアルカリ−
亜鉛系電池がある。Conventionally, a typical button-type battery is constructed by integrating a metal sealing plate containing one active material and a metal can containing the other active material through an insulating sealing gasket. For example, lithium batteries such as manganese dioxide-lithium, copper oxide-lithium, carbon fluoride-lithium batteries, alkaline batteries such as silver-zinc oxide, nickel-zinc, etc.
There are zinc-based batteries.
これらの電池の問題点としては、封口部分における絶縁
性ガスケットの気密力の低下であり、これに伴なう内蔵
電解液の外部漏液である。Problems with these batteries include a decrease in the airtightness of the insulating gasket at the sealing portion, and the consequent leakage of the built-in electrolyte to the outside.
特にこれ等の諸問題を解決するため、従来よりガスケッ
トの素材として、合成ゴム、合成樹脂が用いられて来た
が、一般にブチルゴム、フッ素ゴム、ネオプレンゴム、
エチレンプロピレンゴム等のゴム材料は極めて高い弾性
を有するが、この弾性のため金属缶と、金属封目板とに
よって挾持された時、いわゆる伸びすぎによる「逃げ」
の現象により圧接封口している意味がなくなり、かつま
たこれを防止しようとしてざらに圧接を強めると、その
機掛的特性の脆弱化により切断、破断などを生じ、ガス
ケットとしての要をなさないという欠点があった。In particular, to solve these problems, synthetic rubber and synthetic resin have traditionally been used as materials for gaskets, but generally butyl rubber, fluoro rubber, neoprene rubber,
Rubber materials such as ethylene propylene rubber have extremely high elasticity, but due to this elasticity, when they are sandwiched between a metal can and a metal sealing plate, they may "escape" due to overextension.
Due to this phenomenon, the meaning of pressure sealing becomes meaningless, and if the pressure welding is roughly strengthened in an attempt to prevent this, the mechanical properties will become weaker and the gasket will break or break, making it useless as a gasket. There were drawbacks.
一方、ポリエチレン、ポリプロピレン、ポリアミド、フ
ッ素樹脂等の合成樹脂は機械的物性に優れるが、ポリエ
チレン、ポリプロピレンは応力負荷の状態にあって、界
面活性剤等の極性溶媒に接した場合、応力割れ、いわゆ
るストレスクラッキングがあるためガスケットの要をな
さない。On the other hand, synthetic resins such as polyethylene, polypropylene, polyamide, and fluororesin have excellent mechanical properties, but polyethylene and polypropylene are under stress, and when they come into contact with polar solvents such as surfactants, they can cause stress cracking. Due to stress cracking, it is not essential for gaskets.
反面ポリアミド樹脂は適当な粘りがありそのようなスト
レスクラッキングはないが、高極性溶媒に接した時に溶
解してしまい要をなさない。On the other hand, polyamide resin has a suitable viscosity and does not suffer from such stress cracking, but it dissolves when it comes into contact with highly polar solvents, making it useless.
フッ素樹脂は上記２つの問題はないが、コスト的に高価
であり、スケールメリットで戒り立っ電池用部品の素材
としては採算がとれないのが実状である。Although fluororesin does not have the above two problems, it is expensive and, due to economies of scale, is not profitable as a material for battery parts.
本発明はかような問題をポリエチレン、ポリプロピレン
に対し、アイオノマーを１０重量係〜３０重量多（以後
幅という）以下、好ましくは１７〜２３φ添加すること
により、ポリエチレン、ポリプロピレンに柔軟性を付与
させて、ストレスクラツキング性を解消するものである
。The present invention solves this problem by adding an ionomer of 10 to 30 weight parts (hereinafter referred to as width) to polyethylene or polypropylene, preferably 17 to 23 φ, thereby imparting flexibility to polyethylene or polypropylene. , which eliminates stress cracking.
また添加量を１０〜３０ｏ；ｂとしたのは、ｔｏ％未満
の場合ストレスクラツキング性を１００％完全防止する
ことが不可能であり、３０％を越えるとゴム状弾性体に
類似した特性が顕著となり、前記の如き逃げの現象が生
じて好ましくないからである。In addition, the addition amount was set to 10 to 30o;b because it is impossible to completely prevent stress cracking property 100% if it is less than 10%, and if it exceeds 30%, it has properties similar to those of a rubber-like elastic material. This is because the phenomenon of run-off as described above occurs, which is undesirable.
アイオノマーはエチレンを主成分とするポリマーで、分
子間の結合に関与する陰イオン成分は共重合によってポ
リエチレン分子中に導入されたカルボキシル基であり、
陽イオン成分は、Ｎａ、に、Ｍｇなどの金属であり、ポ
リマー分子中に分布している陰イオンが分子間にある陽
イオンと結合しているので、常温ではゴム状弾性体の挙
動であるが、加熱することによりイオン間の静電的引力
は極度に弱められるため、ポリエチレン、ポリプロピレ
ンと均一に相溶し、射出成形が可能となり、ポリエチレ
ン、ポリプロピレンのストレスクラツキング性を解消し
、適度な粘弾性を付与せしめることができ、封口板や金
属缶に対する密着性の強化を図ることができる。Ionomer is a polymer whose main component is ethylene, and the anionic component involved in intermolecular bonding is a carboxyl group introduced into the polyethylene molecule through copolymerization.
The cation component is a metal such as Na, Mg, etc., and the anion distributed in the polymer molecule is bonded to the cation between the molecules, so it behaves like a rubber-like elastic body at room temperature. However, as the electrostatic attraction between ions is extremely weakened by heating, it becomes uniformly compatible with polyethylene and polypropylene, making injection molding possible, eliminating the stress cracking properties of polyethylene and polypropylene, and producing a moderate It is possible to impart strong viscoelasticity, and it is possible to strengthen the adhesion to sealing plates and metal cans.
次に本発明の外径２３．０ｍ／ｍ。高さ２．０ ｍ ／
ｍのフッ化カーボンーリチウム電池について、ガスケ
ットとして本発明のものＡ、Ｂ従来の如き、ポリエチレ
ン単独のものＣ１ポリプロピレン単独のものＤを各々２
００個構威構成。Next, the outer diameter of the present invention is 23.0 m/m. Height 2.0 m/
For the carbon fluoride-lithium battery of m, gaskets of the present invention A, B, conventional one made of polyethylene alone, C1, one made of polypropylene alone, D were used, respectively.
00 pieces configuration.
尚ポリエチレンはメルトインデックスが約２のもの、ポ
リプロピレンはメルトインデックスが約１のものを使用
、Ａはポリエチレンにアイオノマーを１５係添加、Ｂは
ポリプロピレンにアイオノマーを２０φ添加したもので
ある。The polyethylene used has a melt index of about 2, and the polypropylene has a melt index of about 1.A is polyethylene with 15 parts of ionomer added, and B is polypropylene with 20 parts of ionomer added.
これ等ガスケットをもった電池Ａ−Ｄを温度２０°Ｃ１
相対湿度４０〜５０φの雰囲気に１２時間、温度４５°
Ｃ相対湿度８０〜９０咎の雰囲気に１２時間の２つの条
件が１２時間サイクルで変換する雰囲気中に放置し、漏
液の発生数を調査した結果を次表に示す。Batteries A-D with these gaskets at a temperature of 20°C1
12 hours in an atmosphere with a relative humidity of 40 to 50φ and a temperature of 45°
The following table shows the results of investigating the number of leaks by leaving the sample in an atmosphere with a relative humidity of 80 to 90 degrees C and changing the two conditions in a 12-hour cycle for 12 hours.
表中の数字は漏液電池の累積個数を示す。The numbers in the table indicate the cumulative number of leaking batteries.
Ｕ上の如く、本発明のガスケットはポリエチレンあるい
はポリプロピレンの耐ストレスクラツキング性を高める
ことができ、かつ、適度な粘弾性を付与せしめることが
可能となり、気密封口状態を示現できる。As mentioned above, the gasket of the present invention can improve the stress cracking resistance of polyethylene or polypropylene, and can also impart appropriate viscoelasticity, thereby providing an airtight seal.
また上記の実施例ではリチウム電池について述べたが、
他の電池系にも適用可能である。In addition, although the above embodiment described a lithium battery,
It is also applicable to other battery systems.
Claims (1)
饅のアイオノマーとの混合物からなる封口ガスケットを
備えたことを特徴とする電池。1. A battery comprising a sealing gasket made of a mixture of polyethylene or polypropylene and an ionomer weighing 10 to 30 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53129574A JPS5842947B2 (en) | 1978-10-20 | 1978-10-20 | battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53129574A JPS5842947B2 (en) | 1978-10-20 | 1978-10-20 | battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5556361A JPS5556361A (en) | 1980-04-25 |
| JPS5842947B2 true JPS5842947B2 (en) | 1983-09-22 |
Family
ID=15012829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53129574A Expired JPS5842947B2 (en) | 1978-10-20 | 1978-10-20 | battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5842947B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996020878A1 (en) * | 1994-12-29 | 1996-07-11 | Alcoa Closure Systems International, Inc. | A substantially linear polyethylene sealing liner for a closure |
-
1978
- 1978-10-20 JP JP53129574A patent/JPS5842947B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5556361A (en) | 1980-04-25 |
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