MY120740A - Closed battery and closing member. - Google Patents

Closed battery and closing member.

Info

Publication number
MY120740A
MY120740A MYPI98002001A MYPI9802001A MY120740A MY 120740 A MY120740 A MY 120740A MY PI98002001 A MYPI98002001 A MY PI98002001A MY PI9802001 A MYPI9802001 A MY PI9802001A MY 120740 A MY120740 A MY 120740A
Authority
MY
Malaysia
Prior art keywords
battery
valve element
internal pressure
lead wire
metal foil
Prior art date
Application number
MYPI98002001A
Inventor
Akiyoshi Takada
Kinji Saijo
Kazuo Yoshida
Nobuyuki Yoshimoto
Takehiko Isobe
Original Assignee
Fukuda Metal Foil Powder
Toyo Kohan 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 Fukuda Metal Foil Powder, Toyo Kohan Co Ltd filed Critical Fukuda Metal Foil Powder
Publication of MY120740A publication Critical patent/MY120740A/en

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
    • H01M50/30—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
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/578—Devices or arrangements for the interruption of current in response to pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/20—Pressure-sensitive devices
    • 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)
  • Gas Exhaust Devices For Batteries (AREA)
  • Secondary Cells (AREA)

Abstract

THE OBJECT OF THE PRESENT INVENTION IS TO PROVIDE A CLOSED BATTERY CAPABLE OF RAPID RELEASING THE INTERNAL PRESSURE THEREOF AND AT THE SAME TIME DISCONNECTING THE CURRENT TO EFFECTIVELY PREVENT ITSELF FROM TEMPERATURE RISING AND EXPLOSION SO THAT IT MAY ASSURE THE SAFETY AND RELIABILITY THEREOF, WHEN THE INTERNAL PRESSURE IS ELEVATED DUE TO SHORT CIRCUIT, OVERCHARGE, REVERSE CHARGE OR THE LIKE IN SUCH A COMPLETELY CLOSED BATTERY.@[ MEANS OF SOLUTION ] THE FORMATION OF A VALVE ELEMENT 5 WHOSE CENTER IS ECCENTRIC TO THE CENTER OF A METAL SUBSTRATE 1 PRODUCES A SLIT 3 HAVING A LARGE WIDTH PORTION AROUND THE CIRCUMFERENCE OF VALVE ELEMENT 5. WHEN THE INTERNAL PRESSURE OF A BATTERY IS ELEVATED, THE VALVE ELEMENT 5 IS SMOOTHLY RAISED UP TOGETHER WITH A METAL FOIL 2 FROM THE BENDING FULCRUM PORTION 4 TO THEREBY CUT A LEAD WIRE 6 OR PERMIT A BRAZE PORTION 8 TO DETACH FROM THE LEAD WIRE 6, THUS RELIABLY DISCONNECTING THE CURRENT. THEN, THE METAL FOIL IS ALLOWED TO BURST STABLY AND ACCURATELY AT A PRESCIBED PRESSURE TO THEREBY FORM A VALVE OPENING PORTION 7 SO THAT THE INTERNAL GAS OF THE BATTERY CAN BE DISCHARGED. THUS, THE BATTERY CAN PREVIOUSLY BE PREVENTED FROM EXPLODING.
MYPI98002001A 1997-05-09 1998-05-05 Closed battery and closing member. MY120740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13447697 1997-05-09

Publications (1)

Publication Number Publication Date
MY120740A true MY120740A (en) 2005-11-30

Family

ID=15129223

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI98002001A MY120740A (en) 1997-05-09 1998-05-05 Closed battery and closing member.

Country Status (8)

Country Link
US (1) US6303246B1 (en)
JP (1) JP3433326B2 (en)
KR (1) KR100502787B1 (en)
CN (1) CN1142600C (en)
AU (1) AU7235198A (en)
MY (1) MY120740A (en)
TW (1) TW373348B (en)
WO (1) WO1998052238A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3693844B2 (en) * 1999-03-01 2005-09-14 アルプス電気株式会社 Battery-sensitive piezoelectric path blocking mechanism
JP2001229903A (en) * 2000-02-15 2001-08-24 Sony Corp Non-aqueous electrolyte battery and method of manufacturing the same
US7195839B2 (en) * 2003-02-11 2007-03-27 Eveready Battery Company, Inc. Battery cell with improved pressure relief vent
US7687189B2 (en) * 2004-04-28 2010-03-30 Eveready Battery Company, Inc. Housing for a sealed electrochemical battery cell
GB2555638B (en) * 2016-11-07 2021-12-08 Rheon Labs Ltd Electronic devices
CN207134411U (en) * 2017-08-16 2018-03-23 深圳市瑞德丰精密制造有限公司 Rupture disk
KR102479450B1 (en) * 2018-03-16 2022-12-21 주식회사 엘지에너지솔루션 Secondary battery and manufacture method for the same
EP4071920A4 (en) * 2019-12-04 2024-08-07 Murata Manufacturing Co., Ltd. SECONDARY BATTERY

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR8604254A (en) * 1985-09-30 1987-04-28 Emerson Electric Co SAFETY BREATHING PROCESS IN HERMETICALLY SEALED CONTAINER LID, SAFETY BREATHING MANUFACTURE PROCESS IN METAL COVERS FOR HERMETICALLY SEALED BATTERY CONTAINERS, HERMOTICALLY HERMITICALLY SEALED CONTAINER
JP3233679B2 (en) 1992-05-14 2001-11-26 旭化成株式会社 Manufacturing method of battery safety valve device
JPH0729557A (en) * 1993-07-12 1995-01-31 Fuji Photo Film Co Ltd Nonaqueous battery
JPH07105933A (en) 1993-10-06 1995-04-21 Hitachi Maxell Ltd Explosion-proof sealed battery
JPH07254402A (en) * 1994-03-15 1995-10-03 Toshiba Battery Co Ltd Sealed battery
JP3014293B2 (en) * 1995-04-18 2000-02-28 インターナショナル・ビジネス・マシーンズ・コーポレイション Battery pack
JP3557748B2 (en) * 1995-09-21 2004-08-25 宇部興産株式会社 Sealed non-aqueous secondary battery

Also Published As

Publication number Publication date
AU7235198A (en) 1998-12-08
TW373348B (en) 1999-11-01
CN1255242A (en) 2000-05-31
KR20010012400A (en) 2001-02-15
CN1142600C (en) 2004-03-17
US6303246B1 (en) 2001-10-16
JP3433326B2 (en) 2003-08-04
KR100502787B1 (en) 2005-07-22
WO1998052238A1 (en) 1998-11-19

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