JPH0558219B2 - - Google Patents
Info
- Publication number
- JPH0558219B2 JPH0558219B2 JP60292922A JP29292285A JPH0558219B2 JP H0558219 B2 JPH0558219 B2 JP H0558219B2 JP 60292922 A JP60292922 A JP 60292922A JP 29292285 A JP29292285 A JP 29292285A JP H0558219 B2 JPH0558219 B2 JP H0558219B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- wax
- present
- sealing
- sealing material
- 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 - Lifetime
Links
- 239000001993 wax Substances 0.000 claims description 17
- 239000003566 sealing material Substances 0.000 claims description 16
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 13
- 229920000642 polymer Polymers 0.000 claims description 10
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical group 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- -1 polyethylene Polymers 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 235000019809 paraffin wax Nutrition 0.000 description 4
- 235000019271 petrolatum Nutrition 0.000 description 4
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical group CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229920002367 Polyisobutene Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229920001083 polybutene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000705989 Tetrax Species 0.000 description 1
- 239000012164 animal wax Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000012165 plant wax Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 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
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
［発明の利用分野］
本発明は、シール材でシールしてなる電池に関
し、さらに詳しくはワツクスを含むイソブチレン
系重合体からなるシール材で電池封口部の間隙を
封止してなる電池に関する。
［従来技術とその問題点］
アルカリ電解液を使用するいわゆるアルカリ電
池は、水酸化ナトリウム、水酸化カリウムなどの
アルカリ水溶液特有のクリープ特性のために、従
来より種々のシール材の利用が提案されている。
たとえば特公昭46−16449号公報には、合成ゴ
ム製のガスケツトおよび封口蓋により封口せしめ
るアルカリ電池においてｎ−ブチレンとイソブチ
レンとの共重合体を主とする塗布剤を開口部の間
隙にシールする技術が開示されている。
さらに特開昭55−59655号公報には有機電解質
を用いるリチウム電池のシール材としてもポリイ
ソブチレンが応用されている。
しかしながら、これらのｎ−ブチレンとイソブ
チレンの共重合体や、ポリイソブチレンなどは必
ずしもその耐漏液性が十分とはいえずさらに改良
が望まれていた。
本発明は、上記従来技術の問題点を解消するた
めになされたもので、耐漏液性の良好な電池を提
供することを目的とする。
［発明の構成］
前述の目的を達成するために、本発明の電池
は、ワツクスを１〜30重量％含む平均分子量700
〜10000のイソブチレンを主とする重合体からな
るシール材で電池封口部の間隙をシールしてなる
ことを特徴とする。
以下、本発明を添付図面に基づいてさらに詳し
く説明する。
第１図は本発明の一実施例に係る電池の封口部
を示す。
同図に示す電池では、鉄製の陰極端子を兼ねる
電池ケース１に、水酸化ニツケルを陽極、カドミ
ウムを陰極とした発電要素を収納し、30％の水酸
化カリウム水溶液からなる電解液を適量注入して
いる。そして通常の電池と同様に、ガスケツト２
および封口板３により電池ケース１の開口部を封
口している。
本発明の特徴部分であるシール材４は、電池の
封口部の間隙部５に封入される。シール材４は適
宜の流動性を有しているので、塗布、浸漬、ハケ
塗り、注入などのいずれの充填方法によつても上
記間隙部５を封止することができる。
なお、本発明の封口部の間隙には、場合により
ガスケツト２と電極（第２図）との間隙も含まれ
る。
上記シール材４はイソブチレンを主たるモノマ
ーとして重合してなる重合体であつて、イソブチ
レンのホモポリマーまたはイソブチレンとｎ−ブ
テンのコポリマーなどがある。これらは日本石油
化学株式会社の商品名：日石ポリブテン、テトラ
ツクスなどとして容易に入手できる。またその平
均分子量は700〜10000のものが好ましい。700未
満のものは低粘度のために、シール性が不十分で
ある。また平均分子量が10000を越えると、高粘
度となり過ぎて塗布などの取扱い作業が困難とな
るので好ましくない。
本発明においては、上記イソブチレン系重合体
にワツクスを添加しシール材として使用する。
本発明に使用するワツクスとしては、動植物ワ
ツクスも挙げられるが、好ましくはパラフインワ
ツクス、マイクロクリスタリンワツクス、ポリエ
チレンワツクス、アタクチツクポリプロピレン
（APP）ワツクスなどの炭化水素ワツクスが挙げ
られる。特に好ましくはパラフインワツクスであ
る。たとえばパラフインワツクスは、石油留分の
脱剤による脱ロウ処理により得られる。また、ポ
リエチレンワツクスは、ポリエチレン製造時の低
分子量成分である副生品として得られる。また、
APPワツクスはポリプロピレン樹脂の製造時の
副生品として得られる。
上記ワツクスは、イソブチレン系重合体に対し
て１〜30重量％添加する。この範囲より少ないワ
ツクスの量では本発明の効果が得られず、またこ
の範囲を越えて多量に添加する場合は、イソブチ
レン系重合体のゴム弾性が損われ、ひいてはシー
ル効果が不十分となるのでいずれも好ましくな
い。
イソブチレン系重合体とワツクスの混合は、適
宜の混合方法、たとえば、ミキサー、バンバリー
ミキサー、エクストルーダーなどを利用して混合
する方法などによることができる。
本発明は、上記したように電池ケースと該ケー
スに発電要素を収納して該電池ケースの開口部を
封口してなる電池に適用でき、特にアルカリ電
池、またはジメトキシエタン、プロピレンカーボ
ネート、テトラハイドロフランなどのアプロチツ
クな極性溶媒を用いるリチウム電池と称される電
池およびマンガン電池などに好適である。
［実施例および比較例］
以下、本発明を実施例および比較例に基づいて
具体的に説明する。
第１図に示す構造の本発明に係る電池（実施
例）と、従来のシール材を使用した電池（比較
例）とを作製し、比較を行なつた。
作製した電池は単２型（サイズ：径25mm、高さ
50mm、1.5Ah）のものをそれぞれ25個である。
これらの電池を、通常の方法で充放電を繰返し
た後に、温度40℃、湿度95％の雰囲気下で保存し
た。その後封口部からの漏液の状態を観察した。
結果は漏液した電池の数として第１表に示す。
[Field of Application of the Invention] The present invention relates to a battery sealed with a sealing material, and more particularly to a battery sealed with a sealing material made of an isobutylene polymer containing wax. [Prior art and its problems] In so-called alkaline batteries that use alkaline electrolytes, the use of various sealing materials has been proposed due to the creep characteristics peculiar to alkaline aqueous solutions such as sodium hydroxide and potassium hydroxide. There is. For example, Japanese Patent Publication No. 46-16449 describes a technique for sealing a coating agent mainly made of a copolymer of n-butylene and isobutylene into the gap between openings in an alkaline battery that is sealed with a synthetic rubber gasket and a sealing lid. is disclosed. Further, in JP-A-55-59655, polyisobutylene is applied as a sealing material for lithium batteries using organic electrolytes. However, these copolymers of n-butylene and isobutylene, polyisobutylene, etc. do not necessarily have sufficient leakage resistance, and further improvements have been desired. The present invention has been made to solve the problems of the prior art described above, and an object of the present invention is to provide a battery with good leakage resistance. [Structure of the Invention] In order to achieve the above-mentioned object, the battery of the present invention contains wax with an average molecular weight of 700% and contains 1 to 30% by weight of wax.
It is characterized in that the gap in the battery sealing part is sealed with a sealing material made of a polymer mainly composed of isobutylene of ~10,000. Hereinafter, the present invention will be explained in more detail based on the accompanying drawings. FIG. 1 shows a sealed portion of a battery according to an embodiment of the present invention. In the battery shown in the figure, a power generation element with a nickel hydroxide anode and a cadmium cathode is housed in a battery case 1, which also serves as an iron cathode terminal, and an appropriate amount of electrolyte consisting of a 30% potassium hydroxide aqueous solution is injected. ing. Then, as with a normal battery, gasket 2
The opening of the battery case 1 is sealed by a sealing plate 3. A sealing material 4, which is a feature of the present invention, is sealed in a gap 5 in a sealing part of a battery. Since the sealing material 4 has appropriate fluidity, the gap 5 can be sealed by any filling method such as coating, dipping, brushing, or injection. Incidentally, the gap between the sealing portion of the present invention includes the gap between the gasket 2 and the electrode (FIG. 2) as the case may be. The sealing material 4 is a polymer formed by polymerizing isobutylene as a main monomer, such as an isobutylene homopolymer or a copolymer of isobutylene and n-butene. These are easily available under the trade names of Nippon Petrochemicals Co., Ltd., such as Nippon Oil Polybutene and Tetrax. Moreover, the average molecular weight is preferably 700 to 10,000. If it is less than 700, the sealing performance is insufficient due to low viscosity. Moreover, if the average molecular weight exceeds 10,000, the viscosity becomes too high and handling operations such as coating become difficult, which is not preferable. In the present invention, wax is added to the isobutylene polymer and used as a sealing material. Waxes used in the present invention include animal and plant waxes, but preferably include hydrocarbon waxes such as paraffin waxes, microcrystalline waxes, polyethylene waxes, and atactic polypropylene (APP) waxes. Particularly preferred is paraffin wax. For example, paraffin wax is obtained by dewaxing treatment of petroleum fractions. Furthermore, polyethylene wax is obtained as a by-product that is a low molecular weight component during polyethylene production. Also,
APP wax is obtained as a by-product during the production of polypropylene resin. The above wax is added in an amount of 1 to 30% by weight based on the isobutylene polymer. If the amount of wax is less than this range, the effect of the present invention cannot be obtained, and if it is added in a large amount beyond this range, the rubber elasticity of the isobutylene polymer will be impaired, and the sealing effect will be insufficient. Both are unfavorable. The isobutylene polymer and wax can be mixed by any suitable mixing method, such as a mixing method using a mixer, a Banbury mixer, an extruder, or the like. As described above, the present invention is applicable to a battery including a battery case, a power generation element housed in the case, and an opening of the battery case sealed, and particularly to alkaline batteries, or dimethoxyethane, propylene carbonate, tetrahydrofuran. It is suitable for batteries called lithium batteries and manganese batteries that use approach polar solvents such as. [Examples and Comparative Examples] The present invention will be specifically described below based on Examples and Comparative Examples. A battery according to the present invention having the structure shown in FIG. 1 (Example) and a battery using a conventional sealing material (Comparative Example) were manufactured and compared. The fabricated battery is AA type (size: diameter 25mm, height
50mm, 1.5Ah), 25 pieces each. These batteries were repeatedly charged and discharged in the usual manner and then stored in an atmosphere at a temperature of 40° C. and a humidity of 95%. Thereafter, the state of leakage from the sealing part was observed.
The results are shown in Table 1 as the number of batteries that leaked.
【表】
備考：
＊１：商品名 日石ポリブテンHV−300(日本石
油化学株式会社製)
＊２：140°パラフインワツクス
［発明の効果］
以上説明したように、本発明に使用するシール
材は、イソブチレン系重合体特有の性質であるい
わゆるコールドフローが少ないので、本発明の電
池は長期間の保存においても耐漏液性が良好であ
る。また、このシール材はアルカリ電解液にも不
活性であるので、本発明の電池はアルカリ電解液
を用いたものであつても耐漏液性がよい。さらに
本発明に使用するシール材は、加熱時には従来の
イソブチレン系重合体のシール材よりも低い粘度
を有しているので、注入、塗布などの取扱い作業
が容易であり、したがつて本発明の電池はその製
造が容易である。[Table] Notes:
*1: Product name Nisseki Polybutene HV-300 (manufactured by Nippon Petrochemical Co., Ltd.)
*2: 140° paraffin wax [Effects of the invention] As explained above, the sealing material used in the present invention has little so-called cold flow, which is a property unique to isobutylene polymers, so the battery of the present invention has a long lifespan. It has good leakage resistance even during storage. Further, since this sealing material is also inert to alkaline electrolyte, the battery of the present invention has good leakage resistance even when using alkaline electrolyte. Furthermore, the sealing material used in the present invention has a lower viscosity when heated than conventional isobutylene polymer sealing materials, so handling operations such as injection and coating are easier. Batteries are easy to manufacture.
第１〜２図は本発明の一実施例に係る電池の封
入口部を示す断面図である。
１……ケース、２……ガスケツト、３……封口
板、４Ａ，４Ｂ……シール材、５……封口部の間
隙部。
1 and 2 are cross-sectional views showing the sealing opening of a battery according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Case, 2... Gasket, 3... Sealing plate, 4A, 4B... Sealing material, 5... Gap part of the sealing part.
Claims (1)
〜10000のイソブチレンを主とする重合体からな
るシール材で電池封口部をシールしてなることを
特徴とする電池。 ２ 前記ワツクスが、炭化水素ワツクスである前
記特許請求の範囲第１項記載の電池。 ３ 前記炭化水素ワツクスが、パラフインワツク
スである前記特許請求の範囲第２項記載の電池。[Claims] 1. Average molecular weight 700 containing 1 to 30% by weight of wax.
A battery characterized in that a battery sealing part is sealed with a sealing material made of a polymer mainly composed of isobutylene. 2. The battery according to claim 1, wherein the wax is a hydrocarbon wax. 3. The battery according to claim 2, wherein the hydrocarbon wax is paraffin wax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60292922A JPS62154555A (en) | 1985-12-27 | 1985-12-27 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60292922A JPS62154555A (en) | 1985-12-27 | 1985-12-27 | Battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62154555A JPS62154555A (en) | 1987-07-09 |
| JPH0558219B2 true JPH0558219B2 (en) | 1993-08-26 |
Family
ID=17788140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60292922A Granted JPS62154555A (en) | 1985-12-27 | 1985-12-27 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62154555A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4862213B2 (en) * | 2000-10-18 | 2012-01-25 | 株式会社Ｇｓユアサ | Lead acid battery |
| US6891353B2 (en) | 2001-11-07 | 2005-05-10 | Quallion Llc | Safety method, device and system for an energy storage device |
| US6586912B1 (en) | 2002-01-09 | 2003-07-01 | Quallion Llc | Method and apparatus for amplitude limiting battery temperature spikes |
| US7592776B2 (en) | 2001-11-07 | 2009-09-22 | Quallion Llc | Energy storage device configured to discharge energy in response to unsafe conditions |
| US7443136B2 (en) | 2002-01-09 | 2008-10-28 | Quallion Llc | Method and device employing heat absorber for limiting battery temperature spikes |
| DE10256699A1 (en) * | 2002-12-04 | 2004-06-24 | Basf Ag | Wax formulations and their use for the care and preservation of surfaces |
| JP2005100761A (en) * | 2003-09-24 | 2005-04-14 | Matsushita Electric Ind Co Ltd | Alkaline dry battery |
| JP5153113B2 (en) * | 2006-10-11 | 2013-02-27 | パナソニック株式会社 | Alkaline primary battery |
| CN109738803B (en) * | 2018-12-21 | 2020-12-01 | 无锡职业技术学院 | Hot dry detecting system of battery terminal surface wax sealing |
| DE102018010001A1 (en) * | 2018-12-27 | 2020-07-02 | FRÖTEK Vermögensverwaltung GmbH | Plug of a battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5225133A (en) * | 1975-08-14 | 1977-02-24 | Toyo Boseki | Method of producing nep spun yarn |
-
1985
- 1985-12-27 JP JP60292922A patent/JPS62154555A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5225133A (en) * | 1975-08-14 | 1977-02-24 | Toyo Boseki | Method of producing nep spun yarn |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62154555A (en) | 1987-07-09 |
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