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JPS644308B2 - - Google Patents
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JPS644308B2 - - Google Patents

Info

Publication number
JPS644308B2
JPS644308B2 JP56011872A JP1187281A JPS644308B2 JP S644308 B2 JPS644308 B2 JP S644308B2 JP 56011872 A JP56011872 A JP 56011872A JP 1187281 A JP1187281 A JP 1187281A JP S644308 B2 JPS644308 B2 JP S644308B2
Authority
JP
Japan
Prior art keywords
gasket
negative electrode
button
manufacturing
liquid sealant
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
Application number
JP56011872A
Other languages
Japanese (ja)
Other versions
JPS57126063A (en
Inventor
Masatoshi Komatsu
Iwao Kishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP56011872A priority Critical patent/JPS57126063A/en
Publication of JPS57126063A publication Critical patent/JPS57126063A/en
Publication of JPS644308B2 publication Critical patent/JPS644308B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/147Lids or covers
    • H01M50/166Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy 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】[Detailed description of the invention]

本発明は、負極缶とガスケツトとを予め一体化
した後組立てるボタン型電池の製造方法に関する
ものである。 近年、ボタン型電池は、腕時計をはじめとする
各種小型電子機器の発達に伴い、ますます注目さ
れその需要が高まつてきている。これらの電池
は、正極に酸化銀、2価酸化銀、酸化水銀、二酸
化マンガン、酸化ニツケル、負極にアマルガム亜
鉛、インジウム、カドミウム、等のうち、それぞ
れ1種または複数種の活物質を有し、電解液とし
ては、苛性カリ、または苛性ソーダ水溶液等を使
用したものである。これらの電池は、アルカリ電
解液を用いているために耐漏液性の点で完全では
ない。特に、使用電子機器の小型薄型化に伴う電
池の小型薄型化、またはこれらの機器の低消費電
流化に伴う電池の長寿命化の傾向は、ますます電
池の耐漏液性の向上を要求することになる。 従来のボタン型電池の製造法を、第1図に示す
断面図をもとに説明する。 液体シール剤8を介して負極缶3とガスケツト
7とを予め一体化し、負極合剤4を充てんして負
極ユニツトとする。正極缶1に正極合剤2を充て
んして加圧成形し、正極ユニツトとする。正極ユ
ニツトにセパレータ5、電解液を含浸させた含浸
材6を介して前述の負極ユニツトを押し込み、正
極缶の開口部を内方にかしめて封口する。 このような従来方法で作つたボタン型電池は、
第2図のAに示すように、ガスケツトと負極缶の
喰い合いが大きいため、ガスケツトと負極缶の一
体化に際し、ガスケツトの底部7aと負極缶の底
部3aとの密着が悪く、電池とした場合の耐漏液
性が充分ではなかつた。 本発明は、ガスケツトと負極缶の一体化時の喰
い合いを小さくして、かかる欠点を改善する目的
で為されたものである。 以下、実施例に基づき本発明の製造方法を詳細
に説明する。 実施例 1 シンナーで希釈した液体シール剤を塗布したナ
イロン66よりなるガスケツトを、80%以上の相対
湿度中に放置して膨張させると共に、シンナーを
蒸発させた後、負極缶を押し込み一体化する。そ
の後、湿度30%の雰囲気中に放置してガスケツト
を収縮させたガスケツト付負極缶を、従来方法と
同一の方法で第1図に示した構造のボタン型電池
に組立てた。尚、電池は、正極活物質として酸化
銀、負極活物質として亜鉛、電解液として苛性カ
リ水溶液を用いた直径11.6mm、厚み2.0mmのボタ
ン型酸化銀電池である。 実施例 2 シンナーで希釈した液体シール剤を塗布したナ
イロン66より成るガスケツトを、80%以上の相対
湿度中に放置して膨張させると共に、シンナーを
蒸発させた後、負極缶を押し込み一体化する。高
湿状態のまま温度を60℃に上昇させて液体シール
剤を硬化させ、その後、湿度30%中でガスケツト
を収縮させる。このようにして得られたガスケツ
ト付負極缶を、実施例1と同様にして、実施例1
と同サイズのボタン型酸化銀電池を組み立てた。 このようにして得られた電池と、従来方法によ
つて製造した電池との耐漏液性を比較したのが、
第1表である。第1表は、40℃、相対湿度95%雰
囲気中に500時間、あるいは1000時間放置した場
合の漏液不良発生率を示すもので、サンプル数は
それぞれ100個×3ロツト、合計300個である。
The present invention relates to a method for manufacturing a button type battery in which a negative electrode can and a gasket are integrated in advance and then assembled. In recent years, with the development of various small electronic devices such as wristwatches, button-type batteries have been attracting more and more attention, and the demand for them has been increasing. These batteries each have one or more types of active materials among silver oxide, divalent silver oxide, mercury oxide, manganese dioxide, nickel oxide, etc. in the positive electrode, and amalgam zinc, indium, cadmium, etc. in the negative electrode, As the electrolyte, caustic potash, caustic soda aqueous solution, or the like is used. Since these batteries use an alkaline electrolyte, they are not perfect in terms of leakage resistance. In particular, the tendency for batteries to become smaller and thinner due to the smaller and thinner electronic devices used, and for longer battery life due to the lower current consumption of these devices, increasingly demands improved leakage resistance of batteries. become. A conventional method for manufacturing a button-type battery will be explained based on the cross-sectional view shown in FIG. The negative electrode can 3 and the gasket 7 are integrated in advance through a liquid sealant 8, and the negative electrode mixture 4 is filled to form a negative electrode unit. A positive electrode can 1 is filled with a positive electrode mixture 2 and press-molded to form a positive electrode unit. The aforementioned negative electrode unit is pushed into the positive electrode unit through the separator 5 and the impregnated material 6 impregnated with an electrolytic solution, and the opening of the positive electrode can is caulked inward to seal it. Button batteries made using this conventional method are
As shown in A of Fig. 2, the gasket and the negative electrode can have a large interlocking relationship, so when the gasket and the negative electrode can are integrated, the bottom 7a of the gasket and the bottom 3a of the negative electrode can have poor adhesion, and when used as a battery. The leakage resistance was not sufficient. The present invention was made for the purpose of improving this drawback by reducing the meshing between the gasket and the negative electrode can when they are integrated. Hereinafter, the manufacturing method of the present invention will be explained in detail based on Examples. Example 1 A gasket made of nylon 66 coated with a liquid sealant diluted with thinner is left to expand in a relative humidity of 80% or higher, and after the thinner has evaporated, a negative electrode can is pushed in and integrated. Thereafter, the gasketed negative electrode can, which was left in an atmosphere with a humidity of 30% to cause the gasket to shrink, was assembled into a button-type battery having the structure shown in FIG. 1 in the same manner as the conventional method. The battery is a button-type silver oxide battery with a diameter of 11.6 mm and a thickness of 2.0 mm, using silver oxide as a positive electrode active material, zinc as a negative electrode active material, and a caustic potassium aqueous solution as an electrolyte. Example 2 A gasket made of nylon 66 coated with a liquid sealant diluted with thinner is left to expand in a relative humidity of 80% or higher, and after the thinner has evaporated, a negative electrode can is pushed in and integrated. The liquid sealant is cured by raising the temperature to 60°C in a highly humid state, and then the gasket is contracted in a humidity of 30%. The gasketed negative electrode can thus obtained was prepared in the same manner as in Example 1.
A button-shaped silver oxide battery of the same size was assembled. A comparison of the leakage resistance between the battery obtained in this way and a battery manufactured by a conventional method revealed that:
This is Table 1. Table 1 shows the leakage failure rate when left in an atmosphere of 40℃ and 95% relative humidity for 500 hours or 1000 hours.The number of samples is 100 pieces each x 3 lots, a total of 300 pieces. .

【表】 第1表で明らかなように、本発明の製造方法に
よる電池は、高温多湿中での耐漏液性が非常に良
い。 次に、本発明の作用効果について説明する。 ガスケツトと負極缶を一体化する場合、第2図
のAに示したように、ガスケツトと負極缶の喰い
合いが大きいと、押し込み時の抵抗が大きく、完
全に押し込まれたとしても、押し込み時に生じた
ガスケツトの残留応力のために、短時間のうち
に、負極缶はガスケツトから押し出されてしま
う。従つて、従来の製造方法では、負極缶底部3
aとガスケツト底部7aとの間にスキ間が生じ、
電池組立時に、そのスキ間を通つて内部の電解液
が漏れ出し易く、耐漏液性が悪いものである。そ
れに対し本発明の方法では、予めガスケツトを加
湿処理によつて膨張させるので、組込時のガスケ
ツトと負極缶の喰い合いが小さく、押し込み時の
残留応力も非常に小さい。従つてガスケツトと負
極缶は完全に一体化され、第2図のCのように、
負極缶底部とガスケツト底部にスキマが生じな
い。更に一体化後、乾燥処理により除湿してガス
ケツトを収縮させると、第2図のDに示すよう
に、負極缶の開口端部3bがガスケツトの内面7
bに喰い込み、その後の加工中にも容易にはガス
ケツト底部と負極缶底部にスキマが生ずることが
なく、耐漏液性が良いのである。 電池用ガスケツト材料としては、ナイロン66等
のポリアミド樹脂、ポリエチレン樹脂、ポリプロ
ピレン樹脂等があるが、加湿時の膨張が特に大き
いポリアミド樹脂製ガスケツトを用いれば、本発
明の効果が更に顕著になる。 また、耐漏液性改善のために、ガスケツトと負
極缶の間に液体シール剤を塗布することが近年提
案され、一部実施されているが、従来方法では、
液体シール剤を塗布すると、ガスケツトと負極缶
の摩擦抵抗が小となり、液体シール剤なしの場合
よりも負極缶はガスケツトから押し出され易くな
る。本発明は、このような場合にも、実施例1に
示したように有効である。 エポキシ樹脂等の接着効果を有する物質を含む
液体シール剤を用いる場合は、加湿状態でシンナ
ーを除いて、一体化後そのまま加湿状態で温度を
上げて、液体シール剤を硬化させ、負極缶とガス
ケツトを接着する。前述したように、高湿状態で
は負極缶とガスケツトは喰い合いの小さい状態な
のであるから、ガスケツトの負極缶を上方に押し
上げようとする力は働き得ない。その状態で液体
シール剤が硬化し負極缶とガスケツトが接着され
るために、高湿状態より取り出し除湿による乾燥
処理を施して、ガスケツトが収縮した後も、液体
シール剤の接着力により負極缶の浮きは生じ得な
いのである。そのために、耐漏液性の信頼度は増
し、実施例2に示したように有効な結果を得られ
るのである。 以上述べたように、本発明によれば、負極缶と
ガスケツトを一体化する場合、ガスケツトを予め
加湿し、一体化後の負極缶の浮きをなくすことが
でき、耐漏液性を改善できるのである。
[Table] As is clear from Table 1, the battery manufactured by the manufacturing method of the present invention has very good leakage resistance in high temperature and high humidity environments. Next, the effects of the present invention will be explained. When integrating the gasket and negative electrode can, as shown in A in Figure 2, if the gasket and negative electrode can have a large amount of interlock, there will be a large resistance when pushing in, and even if the gasket is pushed in completely, there will be a problem when pushing in. Due to the residual stress in the gasket, the negative electrode can is pushed out of the gasket within a short time. Therefore, in the conventional manufacturing method, the negative electrode can bottom 3
A gap is created between a and the gasket bottom 7a,
When the battery is assembled, the internal electrolyte tends to leak through the gaps, resulting in poor leakage resistance. In contrast, in the method of the present invention, since the gasket is expanded in advance by humidification treatment, the meshing between the gasket and the negative electrode can during assembly is small, and the residual stress during pushing is also very small. Therefore, the gasket and negative electrode can are completely integrated, as shown in C in Figure 2.
There is no gap between the bottom of the negative electrode can and the bottom of the gasket. Furthermore, after the integration, when the gasket is shrunk by dehumidifying it through a drying process, the open end 3b of the negative electrode can is brought into contact with the inner surface 7 of the gasket, as shown in FIG. 2D.
Even during subsequent processing, a gap does not easily form between the bottom of the gasket and the bottom of the negative electrode can, resulting in good leakage resistance. Gasket materials for batteries include polyamide resins such as nylon 66, polyethylene resins, polypropylene resins, etc., but the effects of the present invention will be even more pronounced if a gasket made of polyamide resin, which has a particularly large expansion during humidification, is used. In addition, in recent years, it has been proposed and partially implemented to apply a liquid sealant between the gasket and the negative electrode can in order to improve leakage resistance.
When the liquid sealant is applied, the frictional resistance between the gasket and the negative electrode can is reduced, and the negative electrode can is more easily pushed out of the gasket than in the case without the liquid sealant. The present invention is effective even in such cases as shown in Example 1. When using a liquid sealant containing a substance that has an adhesive effect such as epoxy resin, remove the thinner in a humidified state, and after integrating, raise the temperature in a humidified state to harden the liquid sealant and bond the anode can and gasket. Glue. As mentioned above, in high humidity conditions, the negative electrode can and the gasket are in a state where there is little interlocking, so the force of the gasket to push the negative electrode can upward cannot work. In this state, the liquid sealant hardens and the negative electrode can and gasket are bonded together, so even after the gasket shrinks after being taken out from the high humidity and dried by dehumidification, the adhesive force of the liquid sealant will keep the negative electrode can intact. No floating can occur. Therefore, the reliability of leakage resistance increases, and as shown in Example 2, effective results can be obtained. As described above, according to the present invention, when the negative electrode can and the gasket are integrated, the gasket is humidified in advance, and the floating of the negative electrode can after integration can be eliminated, and leakage resistance can be improved. .

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明で製造したボタン型電池の全
体構成を示す縦断面図である。 1……正極缶、2……正極合剤、3……負極
缶、4……負極合剤、5……セパレータ、6……
含浸材、7……ガスケツト、8……液体シール
剤。 第2図は、本発明の実施例を示す負極缶とガス
ケツトの図であり、Aはガスケツト加湿前、Bは
ガスケツト加湿後、一体化直前、Cは一体化直
後、Dは一体化後乾燥してガスケツトを収縮させ
た状態を示す断面図である。
FIG. 1 is a longitudinal cross-sectional view showing the overall structure of a button-type battery manufactured according to the present invention. 1...Positive electrode can, 2...Positive electrode mixture, 3...Negative electrode can, 4...Negative electrode mixture, 5...Separator, 6...
Impregnation material, 7... gasket, 8... liquid sealant. FIG. 2 is a diagram of a negative electrode can and gasket showing an embodiment of the present invention, where A is before gasket humidification, B is after gasket humidification and immediately before integration, C is immediately after integration, and D is after drying after integration. FIG. 3 is a sectional view showing a state in which the gasket is contracted.

Claims (1)

【特許請求の範囲】 1 ガスケツトを加湿処理して負極缶に組み込み
乾燥処理を施した後、正極缶に組み込んだことを
特徴とするボタン型電池の製造方法。 2 前記ガスケツトが、ポリアミド樹脂である特
許請求の範囲第1項記載のボタン型電池の製造方
法。 3 前記ガスケツトが、予め有機溶媒で希釈した
液体シール一剤が塗布され、前記有機溶媒を前記
加湿処理で蒸発させた特許請求の範囲第1項もし
くは第2項記載のボタン型電池の製造方法。 4 前記乾燥処理にさきだつて高湿状態で温度を
あげて液体シール剤を硬化させる特許請求の範囲
第3項記載のボタン型電池の製造方法。
[Scope of Claims] 1. A method for manufacturing a button-type battery, characterized in that a gasket is humidified, assembled into a negative electrode can, dried, and then assembled into a positive electrode can. 2. The method for manufacturing a button battery according to claim 1, wherein the gasket is made of polyamide resin. 3. The method of manufacturing a button-type battery according to claim 1 or 2, wherein the gasket is coated with a liquid sealing agent diluted in advance with an organic solvent, and the organic solvent is evaporated in the humidification process. 4. The method for manufacturing a button-type battery according to claim 3, wherein the liquid sealant is cured by raising the temperature in a high humidity state prior to the drying process.
JP56011872A 1981-01-29 1981-01-29 Manufacture of button type battery Granted JPS57126063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56011872A JPS57126063A (en) 1981-01-29 1981-01-29 Manufacture of button type battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56011872A JPS57126063A (en) 1981-01-29 1981-01-29 Manufacture of button type battery

Publications (2)

Publication Number Publication Date
JPS57126063A JPS57126063A (en) 1982-08-05
JPS644308B2 true JPS644308B2 (en) 1989-01-25

Family

ID=11789809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56011872A Granted JPS57126063A (en) 1981-01-29 1981-01-29 Manufacture of button type battery

Country Status (1)

Country Link
JP (1) JPS57126063A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001222983A (en) * 2000-02-08 2001-08-17 Toshiba Battery Co Ltd Button type battery and method of applying sealing material to gasket thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713101B2 (en) * 1974-05-29 1982-03-15

Also Published As

Publication number Publication date
JPS57126063A (en) 1982-08-05

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