JPH0558218B2 - - Google Patents
Info
- Publication number
- JPH0558218B2 JPH0558218B2 JP60292921A JP29292185A JPH0558218B2 JP H0558218 B2 JPH0558218 B2 JP H0558218B2 JP 60292921 A JP60292921 A JP 60292921A JP 29292185 A JP29292185 A JP 29292185A JP H0558218 B2 JPH0558218 B2 JP H0558218B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- present
- sealing
- isobutylene
- 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
- 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 12
- 239000003349 gelling agent Substances 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 10
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 3
- 239000000600 sorbitol Substances 0.000 claims description 3
- FMZUHGYZWYNSOA-VVBFYGJXSA-N (1r)-1-[(4r,4ar,8as)-2,6-diphenyl-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol Chemical group C([C@@H]1OC(O[C@@H]([C@@H]1O1)[C@H](O)CO)C=2C=CC=CC=2)OC1C1=CC=CC=C1 FMZUHGYZWYNSOA-VVBFYGJXSA-N 0.000 claims description 2
- 229940087101 dibenzylidene sorbitol Drugs 0.000 claims description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical group CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 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
- 238000004519 manufacturing process Methods 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
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000001879 gelation Methods 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
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920001083 polybutene Polymers 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 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
- 150000003934 aromatic aldehydes Chemical class 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
- 230000000694 effects Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000203 mixture Substances 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
- 239000002798 polar solvent Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 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 of a single cell or a single battery
- 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 of a single cell or a single battery
- 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
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、さらに詳しくはゲル化剤でゲル化してなるイ
ソブチレン系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。また、従来シール材に用いられ
てきたイソブチレン系重合体は高粘度であるため
に取扱いが困難であり、そのようなシール材で電
池封口部をシールしてなる電池の製造は容易では
なかつた。
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、耐漏液性が良好で、製造が
容易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、0.05〜５重量％含まれるゲル化剤でゲル化さ
れた平均分子量約200〜3000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：日石ポリブテンなどとし
て容易に入手できる。またその平均分子量は200
〜3000のものが好ましい。200未満のものは低粘
度のために、ゲル化させてもシール性が不十分で
ある。また平均分子量が3000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。
本発明において用いるゲル化剤は、油ゲル化剤
として用いられ、かつアルカリ電解液などの電解
液に対して安定なものならばいずれのものも使用
できる。
たとえば、このようなゲル化剤としては芳香族
アルデヒドとソルビトールとの脱水縮合物または
その誘導体であるジベンジリデンソルビトールま
たはトリジベンジリデンソルビトールがある。こ
れらは、新日本理化株式会社からゲルオールＤあ
るいはゲルオールＴの商品名で得られる。
上記ゲル化剤は、イソブチレン系重合体に対し
て0.05〜５重量％添加する。0.05％より少ないと
ゲル化が不十分であり、また５重量％より多い場
合ではゲル化は十分であるものの不経済となり好
ましくない。
本発明に使用するシール材は、イソブチレン系
重合体にゲル化剤を添加し、適宜のニーダーによ
り混合する。混合時には加熱し、ゲル化剤をイソ
ブチレン系重合体に溶解させる。このようにして
得られたシール材は、冷却すればゲル化する。
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 gelled with a gelling agent. . [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. In addition, isobutylene polymers conventionally used as sealants have a high viscosity and are difficult to handle, and it has not been easy to manufacture batteries with battery seals sealed with such sealants. 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 that has good leakage resistance and is easy to manufacture. [Structure of the Invention] In order to achieve the above-mentioned object, the battery of the present invention is made of a polymer mainly composed of isobutylene having an average molecular weight of about 200 to 3000 gelled with a gelling agent containing 0.05 to 5% by weight. The gap between the battery sealing portions is sealed with a sealing material of 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 as Nippon Petrochemical Co., Ltd.'s trade name: Nisseki Polybutene. Also, its average molecular weight is 200
~3000 is preferred. If it is less than 200, it has a low viscosity and therefore has insufficient sealing properties even if it is gelled. Moreover, if the average molecular weight exceeds 3000, the viscosity becomes too high and handling operations such as coating become difficult, which is not preferable. As the gelling agent used in the present invention, any gelling agent can be used as long as it is used as an oil gelling agent and is stable against electrolytes such as alkaline electrolytes. For example, such a gelling agent includes a dehydrated condensate of an aromatic aldehyde and sorbitol, or a derivative thereof, dibenzylidene sorbitol or tridibenzylidene sorbitol. These are obtained from Shin Nippon Rika Co., Ltd. under the trade name Gelol D or Gelol T. The gelling agent is added in an amount of 0.05 to 5% by weight based on the isobutylene polymer. If it is less than 0.05%, gelation will be insufficient, and if it is more than 5% by weight, although gelation will be sufficient, it will be uneconomical and undesirable. The sealing material used in the present invention is prepared by adding a gelling agent to an isobutylene polymer and mixing the mixture with an appropriate kneader. Heat is applied during mixing to dissolve the gelling agent in the isobutylene polymer. The sealing material obtained in this manner gels when cooled. As described above, the present invention can be applied 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−100(日本石
油化学株式会社製)
［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。また本発明に使用するシール材は、従来のイ
ソブチレン系重合体からなるシール材よりも塗布
時等において粘度が低いので、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-100 (manufactured by Nippon Petrochemical Co., Ltd.)
[Effects of the Invention] As explained above, since the sealing material used in the present invention has little so-called cold flow, which is a property unique to isobutylene polymers, the battery of the present invention has leakage resistance even during long-term storage. is good. Furthermore, the sealing material used in the present invention has a lower viscosity during application than conventional sealing materials made of isobutylene-based polymers, so handling operations such as injection and coating are easier. is 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)
れた平均分子量200〜3000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 前記ゲル化剤が、ジベンジリデンソルビトー
ルまたはトリベンジリデンソルビトールである前
記特許請求の範囲第１項記載の電池。[Scope of Claims] 1. The battery sealing part is sealed with a sealing material made of a polymer mainly composed of isobutylene with an average molecular weight of 200 to 3000 and gelled with a gelling agent containing 0.05 to 5% by weight. Characteristic batteries. 2. The battery according to claim 1, wherein the gelling agent is dibenzylidene sorbitol or tribenzylidene sorbitol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60292921A JPS62154554A (en) | 1985-12-27 | 1985-12-27 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60292921A JPS62154554A (en) | 1985-12-27 | 1985-12-27 | Battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62154554A JPS62154554A (en) | 1987-07-09 |
| JPH0558218B2 true JPH0558218B2 (en) | 1993-08-26 |
Family
ID=17788126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60292921A Granted JPS62154554A (en) | 1985-12-27 | 1985-12-27 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62154554A (en) |
-
1985
- 1985-12-27 JP JP60292921A patent/JPS62154554A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62154554A (en) | 1987-07-09 |
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