JPH02236952A - Alkaline battery - Google Patents
Alkaline batteryInfo
- Publication number
- JPH02236952A JPH02236952A JP1058309A JP5830989A JPH02236952A JP H02236952 A JPH02236952 A JP H02236952A JP 1058309 A JP1058309 A JP 1058309A JP 5830989 A JP5830989 A JP 5830989A JP H02236952 A JPH02236952 A JP H02236952A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- crystallinity
- nylon
- gasket
- insulating gasket
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 229920002292 Nylon 6 Polymers 0.000 claims 1
- 229920002302 Nylon 6,6 Polymers 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 7
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229910001923 silver oxide Inorganic materials 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- 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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は，アルカリ電池の耐漏液特性の改良に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improving the leakage resistance of alkaline batteries.
従来の技術
一般に、アルカリ電池において耐漏液特性を向上させる
ために，封日時正極ケースと封口板の間にポリエチレン
，ポリプロピレン，ナイロンナト合成樹脂製の絶縁ガス
ケッｌ−ｉ介在させ正極ケースの周縁を締つけることで
，封口板一絶縁ガスケットー正極ケース間の緊迫度を増
加させ，界面からの電解液の流出を防止している。Conventional technology In general, in order to improve leakage resistance in alkaline batteries, an insulating gasket made of polyethylene, polypropylene, or nylon synthetic resin is interposed between the date-sealing positive electrode case and the sealing plate, and the periphery of the positive electrode case is tightened. This increases the tension between the sealing plate, insulating gasket, and positive electrode case to prevent electrolyte from flowing out from the interface.
しかるに，水酸化カリウムの様なアルカリ電解液を使用
する電池では電解液が負極集電体の表面をはい上がるク
リープ現象により漏液発生がしやすくなる。そのため，
従来の絶縁ガスケットでは，クリープ現象を防止するに
は圧縮応力は十分でなく，吸水により圧縮応力の低下を
引きおこすので，耐漏液性については十分とはいえなか
った。そこで，封口板−ガスケットー正極ケース間のカ
ン合の検討そして、ガスケットと封口板及びガスケット
と正極ケース間に液体シール剤を介在させる方法がとら
れているが必ずしも十分な効果は得られていない。However, in batteries that use an alkaline electrolyte such as potassium hydroxide, leakage is likely to occur due to the creep phenomenon in which the electrolyte creeps up the surface of the negative electrode current collector. Therefore,
With conventional insulating gaskets, the compressive stress is not sufficient to prevent the creep phenomenon, and the compressive stress decreases due to water absorption, so leakage resistance is not sufficient. Therefore, methods have been taken to examine the fit between the sealing plate, gasket, and positive electrode case, and to interpose a liquid sealant between the gasket and the sealing plate, and between the gasket and the positive electrode case, but these methods have not always achieved sufficient effects.
主にアルカリ電池の絶縁ガスケット材料には，ナイロン
６６が使用されており，これらのガスケット材の結晶化
度を高めた状態で使用する（結晶化度４０〜４６％）提
案がなされている。Nylon 66 is mainly used as an insulating gasket material for alkaline batteries, and proposals have been made to use these gasket materials with increased crystallinity (40-46% crystallinity).
上記、条件では結晶化度の上昇とともに引張強度，硬度
が高くなク圧縮応力も上昇し、吸水性も減少し，この面
では電池の耐漏液特性は向上する。Under the above conditions, as the degree of crystallinity increases, tensile strength and hardness increase, compressive stress also increases, water absorption also decreases, and in this respect, the leakage resistance of the battery improves.
しかし，結晶化度を高めるためにガスケットを高温で加
熱するため劣化し、ガスケットが硬くなりすぎ、封日時
ガスケットを締めつける際に割れが生じ、封口板と正極
ケースの接触による短絡、そして割れ部よｖ罰液発生と
いう問題がある。However, since the gasket is heated at high temperatures to increase its crystallinity, it deteriorates, the gasket becomes too hard, and cracks occur when the sealing gasket is tightened, causing short circuits due to contact between the sealing plate and the positive electrode case, and cracks. There is a problem with the generation of liquid.
発明が解決しようとする課題
本発明は，ガスケット材料としてナイロン６６を用いて
、最適な結晶化度の範囲を提供することによク耐潴液特
性にすぐれたアルカリ電池を提供することを目的とする
。Problems to be Solved by the Invention An object of the present invention is to provide an alkaline battery that uses nylon 66 as a gasket material and provides an optimal range of crystallinity, thereby exhibiting excellent water resistance. do.
課題を解決するための手段
前記の問題点を解決するため本発明は、絶縁ガスケット
に、結晶化度が２７〜３８％に調整されたナイロン６６
を用いたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention uses nylon 66 whose crystallinity is adjusted to 27 to 38% as an insulating gasket.
It uses
作用
この構成によク耐漏液特性にすぐれたアルカリ電池を得
ることができる。Function: With this configuration, an alkaline battery with excellent leakage resistance can be obtained.
実施例 以下、本発明の実施例を示す。Example Examples of the present invention will be shown below.
第１図は，本発明による直径９．５■，高さ２．０簡の
酸化銀電池ＳＲ９２０Ｗを示す。FIG. 1 shows a silver oxide battery SR920W having a diameter of 9.5 cm and a height of 2.0 cm according to the present invention.
酸化銀を活物質とする正極合剤２を正極ケース１内に正
極リング３とともに挿入して加圧成型し、正極に電解液
を注液する。A positive electrode mixture 2 containing silver oxide as an active material is inserted into a positive electrode case 1 together with a positive electrode ring 3 and molded under pressure, and an electrolyte is poured into the positive electrode.
そしてポリエチレンからなる微孔性フィルムとセロファ
ンからなるセパレータ−４とナイロン不織布などからな
る含液材５を打抜き，正極ケース内に挿入した。さらに
その上に氷化亜鉛粉末とゲル化剤としてポリアクリル酸
ナトリウムよりなるゲル状亜鉛負極７を封口板８に保持
させて配置し、ナイロン６６よりなる絶縁ガスケット６
を介して正極ケースの周縁を締つけることで構成した。Then, a microporous film made of polyethylene, a separator 4 made of cellophane, and a liquid-containing material 5 made of nylon nonwoven fabric were punched out and inserted into the positive electrode case. Furthermore, a gelled zinc negative electrode 7 made of frozen zinc powder and sodium polyacrylate as a gelling agent is placed on top of it, held by a sealing plate 8, and an insulating gasket 6 made of nylon 66 is placed thereon.
It was constructed by tightening the periphery of the positive electrode case through the
ナイロン６６を材料に用いた絶縁ガスケットは、射出成
形して作表するが、射出成形条件により，その結晶化度
は変化し、一般には２０〜２７％で、高い結晶化度をつ
くるのは、量産上むずかしい。Insulating gaskets using nylon 66 as a material are injection molded and tabulated, but the crystallinity varies depending on the injection molding conditions, and is generally 20 to 27%. Difficult to mass produce.
そこで結晶化度をあげるため，８０〜９０’Ｃの温水中
、あるいは、真空中で８０’Ｃ以上の温度で加熱処理す
る方法がある。Therefore, in order to increase the degree of crystallinity, there is a method of heat treatment at a temperature of 80 to 90'C in hot water or in a vacuum at a temperature of 80'C or higher.
結晶化度の測定は、ナイロン６６の密度を測定し、その
値より算出する。試料の密度をＸ，結晶質の密度をｄｃ
，非品質の密度をｄａ、試料の密度をｄとするとき結晶
化度Ｘは以下の式で表わされる。The degree of crystallinity is measured by measuring the density of nylon 66 and calculating from that value. The density of the sample is X, the density of the crystal is dc
, the density of the non-quality material is da, and the density of the sample is d, the crystallinity X is expressed by the following formula.
ｄ（ｄａ−ｄａ）
ナイロン６６の文献値では、ｄａ，ｄａは以下の値であ
る。d (da-da) According to the literature values of nylon 66, da and da are the following values.
１ｏｏ％結晶：１．２４
１００％非晶：１．ＯＳ
密度測定は浮沈法で、四塩化炭素にトルエンを滴下し、
試料ナイロン６６が、液中で浮きもせず、沈みもしない
溶液の密度を測定したものである。1oo% crystalline: 1.24 100% amorphous: 1. OS density measurement is carried out using the float-sink method, in which toluene is added dropwise to carbon tetrachloride.
The density of a solution in which sample nylon 66 neither floats nor sinks is measured.
上記測定法によクナイロン６６を射出成形してガスケッ
トを作製し、加熱処理により結晶化度を高めた一覧を表
１に示す。゛
上記ガスケットを用いて、その他の条件を同一にして、
電池ＳＲ９２０Ｗを構成し、４６℃、相対温度９０％雰
囲気中に保存し，漏液発生率を測定した。電池の評価数
は、それぞれ各６０個である。その結果を表２に示す。Table 1 shows a list of gaskets manufactured by injection molding Nylon 66 according to the above measurement method, and the crystallinity of which was increased by heat treatment.゛Using the above gasket and keeping other conditions the same,
A battery SR920W was constructed and stored in an atmosphere at 46° C. and a relative temperature of 90%, and the leakage rate was measured. The number of batteries evaluated was 60 each. The results are shown in Table 2.
（以下余白）
表２に示す様に，本発明の電池ａ，ｙＩＩｉ％耐漏液特
性にすぐれていた。結晶化度の低いガスケットを用いた
電池は，保存後の漏液発生率が増加している。(The following is a blank space.) As shown in Table 2, the batteries a and y of the present invention had excellent leakage resistance by IIi%. Batteries using gaskets with low crystallinity have an increased rate of leakage after storage.
一方，結晶化度の高い領域の０〜Ｘでは，組立直後にお
いて２漏液発生が見つけられた。これは，ガスケットの
結晶化度があがり，硬くなりすぎ，封日時ガスケットを
締めつける際に割れが生じたものである。On the other hand, in the high crystallinity region 0 to X, two leaks were found immediately after assembly. This is because the crystallinity of the gasket has increased and it has become too hard, causing cracks to occur when the sealing gasket is tightened.
発明の効果
以上のように、本発明品によれば、耐漏液特性に優れた
アルカリ電池が得られる。Effects of the Invention As described above, according to the product of the present invention, an alkaline battery with excellent leakage resistance can be obtained.
第１図は本発明の実施例による酸化銀電池の断面図であ
る。
１・・・・・・正極ケース、２・・・・・・正極合剤、
３・・・・・・正極リング．４・・・・・・セパレータ
ー、６・・・・・・含液材、６・・・・・・絶縁ガスケ
ット、７・・・・・・ゲル状亜鉛負極，８・・・・・・
封口板。
代理人の氏名 弁理士 粟 野 重 孝 ＃１か１名ト
ー正格ケース
２一 正箱合剤Ｊ
５−−−Ｚ壜坊
Ｈ＝−１色十１力”スケ，Ｙ
７・一費極
８−−一圭．ＴＩ］ｆｆＬFIG. 1 is a sectional view of a silver oxide battery according to an embodiment of the present invention. 1... Positive electrode case, 2... Positive electrode mixture,
3... Positive electrode ring. 4...Separator, 6...Liquid-containing material, 6...Insulating gasket, 7...Gelified zinc negative electrode, 8...
Sealing board. Agent's name Patent attorney Shigetaka Awano #1 or 1 person To Seikaku Case 21 Seiho Mixture J 5---Z Bottle H=-1 color 11 power'' Suke, Y 7・One expense Goku 8 --Ikkei.TI]ffL
Claims (1)
締つけて構成したアルカリ電池であって、絶縁ガスケッ
トに、結晶化度が２７〜３７％に調整されたナイロン６
６を用いたアルカリ電池。This is an alkaline battery constructed by tightening a sealing plate to the periphery of a positive electrode case via an insulating gasket, and the insulating gasket is made of nylon 6 with a crystallinity adjusted to 27 to 37%.
Alkaline battery using 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1058309A JPH02236952A (en) | 1989-03-10 | 1989-03-10 | Alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1058309A JPH02236952A (en) | 1989-03-10 | 1989-03-10 | Alkaline battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02236952A true JPH02236952A (en) | 1990-09-19 |
Family
ID=13080641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1058309A Pending JPH02236952A (en) | 1989-03-10 | 1989-03-10 | Alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02236952A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010153167A (en) * | 2008-12-25 | 2010-07-08 | Panasonic Corp | Flat type nonaqueous electrolyte battery |
| WO2014002847A1 (en) * | 2012-06-25 | 2014-01-03 | トヨタ自動車株式会社 | Battery sealing member |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58194252A (en) * | 1982-05-07 | 1983-11-12 | Hitachi Maxell Ltd | Button type alkaline battery |
| JPS599852A (en) * | 1982-07-07 | 1984-01-19 | Hitachi Maxell Ltd | Alkaline battery |
-
1989
- 1989-03-10 JP JP1058309A patent/JPH02236952A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58194252A (en) * | 1982-05-07 | 1983-11-12 | Hitachi Maxell Ltd | Button type alkaline battery |
| JPS599852A (en) * | 1982-07-07 | 1984-01-19 | Hitachi Maxell Ltd | Alkaline battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010153167A (en) * | 2008-12-25 | 2010-07-08 | Panasonic Corp | Flat type nonaqueous electrolyte battery |
| WO2014002847A1 (en) * | 2012-06-25 | 2014-01-03 | トヨタ自動車株式会社 | Battery sealing member |
| JP2014029839A (en) * | 2012-06-25 | 2014-02-13 | Toyota Motor Corp | Sealing member for battery |
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