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JPS56132765A - Manufacture of sealing body for battery - Google Patents

Manufacture of sealing body for battery

Info

Publication number
JPS56132765A
JPS56132765A JP3531380A JP3531380A JPS56132765A JP S56132765 A JPS56132765 A JP S56132765A JP 3531380 A JP3531380 A JP 3531380A JP 3531380 A JP3531380 A JP 3531380A JP S56132765 A JPS56132765 A JP S56132765A
Authority
JP
Japan
Prior art keywords
sealing body
thin part
battery
resin
metal mold
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
Application number
JP3531380A
Other languages
Japanese (ja)
Inventor
Nobuharu Koshiba
Fumio Oo
Tomokazu Mitamura
Akira Oota
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3531380A priority Critical patent/JPS56132765A/en
Publication of JPS56132765A publication Critical patent/JPS56132765A/en
Pending legal-status Critical Current

Links

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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/154—Lid or cover comprising an axial bore for receiving a central current collector
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

PURPOSE:To increase the explosion resistance and enhance the mass production capability of a sealing body having a circular-arclike thin part which serves for the safety of a battery by breaking, by providing a resin-pouring gate, from which a resin subjected to injection molding is poured, at a symmetrical position relative to the thin part about the center of the sealing body. CONSTITUTION:A sealing body of an explosion-proof battery is provided with a thin part 22 which breaks when the internal pressure of the battery becomes unusually high, thereby any gases being discharged toward outside the battery. The sealing body is manufactured by pouring a thermoplastic resin into an injection- molding metal mold. Here, the shape of the former thin part 22 is a circular arc 5 which extends in the direction of the concentric circle of the sealing body, and a resin-pouring gate 3 provided in the molding metal mold is located at a symmetrical position relative to the former circular-arclike thin part 5 about the center of the sealing body. Owing to the above constitution of the metal mold, the welded surface of the poured resin coincides with the thin part 5. Consequently, the thin part 5 has less strength than any other part of the sealing body and efficiently works for the prevention of the battery explosion.
JP3531380A 1980-03-19 1980-03-19 Manufacture of sealing body for battery Pending JPS56132765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3531380A JPS56132765A (en) 1980-03-19 1980-03-19 Manufacture of sealing body for battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3531380A JPS56132765A (en) 1980-03-19 1980-03-19 Manufacture of sealing body for battery

Publications (1)

Publication Number Publication Date
JPS56132765A true JPS56132765A (en) 1981-10-17

Family

ID=12438307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3531380A Pending JPS56132765A (en) 1980-03-19 1980-03-19 Manufacture of sealing body for battery

Country Status (1)

Country Link
JP (1) JPS56132765A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518821A1 (en) * 1981-12-23 1983-06-24 Duracell Int IMPROVEMENTS ON GALVANIC BATTERIES
FR2529016A1 (en) * 1982-06-16 1983-12-23 Duracell Int IMPROVEMENT TO GALVANIC BATTERIES
JPS6142057U (en) * 1984-08-20 1986-03-18 三洋電機株式会社 Sealed alkaline storage battery
JPS61133552A (en) * 1984-12-03 1986-06-20 Fuji Elelctrochem Co Ltd Sealed gasket for explosion-proof cell
JPS6199967U (en) * 1984-12-06 1986-06-26
WO2004077592A1 (en) * 2003-02-25 2004-09-10 Fdk Energy Corporation Alkaline battery sealing gasket, and enclosed type alkaline battery
WO2008139749A1 (en) * 2007-05-09 2008-11-20 Panasonic Corporation Alkaline battery

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518821A1 (en) * 1981-12-23 1983-06-24 Duracell Int IMPROVEMENTS ON GALVANIC BATTERIES
FR2529016A1 (en) * 1982-06-16 1983-12-23 Duracell Int IMPROVEMENT TO GALVANIC BATTERIES
JPS6142057U (en) * 1984-08-20 1986-03-18 三洋電機株式会社 Sealed alkaline storage battery
JPS61133552A (en) * 1984-12-03 1986-06-20 Fuji Elelctrochem Co Ltd Sealed gasket for explosion-proof cell
JPS6199967U (en) * 1984-12-06 1986-06-26
WO2004077592A1 (en) * 2003-02-25 2004-09-10 Fdk Energy Corporation Alkaline battery sealing gasket, and enclosed type alkaline battery
US7144656B2 (en) 2003-02-25 2006-12-05 Fdk Energy Co., Ltd. Alkaline battery sealing gasket and sealed alkaline battery
WO2008139749A1 (en) * 2007-05-09 2008-11-20 Panasonic Corporation Alkaline battery

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