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WO2009048199A1 - Boîtier métallique pour batteries - Google Patents

Boîtier métallique pour batteries Download PDF

Info

Publication number
WO2009048199A1
WO2009048199A1 PCT/KR2007/006247 KR2007006247W WO2009048199A1 WO 2009048199 A1 WO2009048199 A1 WO 2009048199A1 KR 2007006247 W KR2007006247 W KR 2007006247W WO 2009048199 A1 WO2009048199 A1 WO 2009048199A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
electrode
batteries
battery
central portion
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.)
Ceased
Application number
PCT/KR2007/006247
Other languages
English (en)
Inventor
Yong-Wook Lee
Du-Wan Ko
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.)
SMART THINKERS Inc
Original Assignee
SMART THINKERS 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 SMART THINKERS Inc filed Critical SMART THINKERS Inc
Publication of WO2009048199A1 publication Critical patent/WO2009048199A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H01G11/80—Gaskets; Sealings
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation
    • H01G9/10—Sealing, e.g. of lead-in wires
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/216—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for button or coin cells
    • 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

Definitions

  • the present invention relates, in general, to a metal casing for batteries and, more particularly, to a metal casing that is used to cover various types of batteries, such as a primary battery, a secondary battery or an electric double layer capacitor.
  • a metal casing which is used for various types of batteries, includes an upper casing and a lower casing, which are coupled together and insulated from each other via a gasket, thus forming a battery casing, and an anode electrode and a cathode electrode, which are configured so as to come into contact with the upper casing and the lower casing, respectively.
  • FIG. 1 shows a unit cell that constitutes a conventional electric double layer capacitor.
  • the unit cell is indicated by reference numeral 1.
  • the unit cell includes two polarized electrodes 2 and 3 into which electrolytic solution is impregnated, an insulating separator 4 which is material having an ion exchange characteristic and is disposed between the two electrodes 2 and 3, a gasket 5 which is disposed around the two electrodes 2 and 3 to thus prevent the electrolytic solution from leaking, and upper and lower casings 6 and 7 which are configured such that the elements 2, 3, 4 and 5 are mounted therein and the upper and lower casings 6 and 7 are insulated from each other via the gasket 5, thus constituting a casing body, and which are made of metal material.
  • the unit cell 1 may be used singly or may be configured such that two or more unit cells are arranged in the upper and lower directions thereof.
  • an anode electrode 8 and a cathode electrode 9 are bonded with the respective upper and lower casings 6 and 7, and thus a usable electric double layer capacitor is constructed.
  • the coupling between the upper and lower casings 6 and 7 and the electrodes 8 and 9 are made in a simple surface contact manner using a method such as welding.
  • the electric double layer capacitor including internal ionic exchange material
  • primary batteries or secondary batteries which use internal chemical reaction material instead of the ion exchange material, may have the same construction as the electric double layer capacitor, except for the reaction material in the battery.
  • the thicknesses d2 and d3 of the respective electrodes 8 and 9 are related to the total thickness d of the capacitor, in addition to the thickness dl of the unit cell 1. This unnecessarily increases the thickness of the capacitor and, as a result, causes a problem in which the range of use of the capacitor is limited.
  • the present invention has been made keeping in mind the above problems occurring in the prior art, and the present invention is intended to provide a metal casing for batteries, which enables the realization of a thinner battery. [13] Furthermore, the present invention is intended to provide a metal casing for batteries, which enables the realization of a thinner battery without reducing the capacity of the battery. [14] Furthermore, the present invention is intended to provide a metal casing for batteries, which can stably maintain both the state of a battery and the coupling between upper and lower casings and electrodes. [15]
  • the present invention provides a metal casing for batteries, including: a ring-shaped gasket, which is provided to prevent internal reaction material from leaking; an upper casing and a lower casing, which are coupled together and are insulated from each other via the gasket; and an anode electrode and a cathode electrode, which are provided on the upper and lower casings, wherein at least one of the upper casing and the lower casing comprises a protruding central portion and a stepped edge portion, heights of which are different from each other due to a step that is formed at the bottom of the corresponding casing, and an electrode, which is provided on the casing having the step, has a thickness equal to or less than the protrusion height of the central portion, and is bonded to the edge portion.
  • the step is formed in a portion in which the inner surface of the lower casing and the edge of the electrode come into contact with each other. It is preferred that the electrode be formed to surround the protruding central portion.
  • the battery can be thinner than a conventional battery.
  • the location of the step to be formed is appropriately adjusted, so that the battery of the present invention can be configured to have the same capacitance as a conventional battery. That is, according to the present invention, a design can be achieved such that the battery of the present invention is thinner than a conventional battery but the same capacitance is maintained.
  • At least one of the electrodes is formed to surround the protruding central portions of the casing, so that the secure coupling with the casing can be maintained. Furthermore, the casing, including the step, is bent, so that the shape of the battery can be reliably maintained.
  • FIG. 1 is a sectional view of a unit cell that constitutes a conventional electric double layer capacitor
  • FIG. 2 is a plan view of the electric double layer capacitor, which includes the unit cell of FIG. 1;
  • FIG. 3 is a front view of FIG. 2;
  • FIG. 4 is a bottom view of FIG. 2;
  • FIG. 5 is a partially enlarged view of the 'A' portion of FIG. 3;
  • FIG. 6 is a sectional view of a unit cell that constitutes an electric double layer capacitor according to the present invention.
  • FIG. 7 is a plan view of the electric double layer capacitor, which includes the unit cell of FIG. 6;
  • FIG. 8 is a front view of FIG. 7 ;
  • FIG. 9 is a bottom view of FIG. 7 ;
  • FIG. 10 is a partially enlarged view of the 'B' portion of FIG 8.
  • the term 'battery' used in the present invention, includes various types of batteries, such as a primary battery, a secondary battery and an Electric Double Layer Capacitor(EDLC).
  • EDLC Electric Double Layer Capacitor
  • the present invention is described with reference to an EDLC, which is a kind of battery. Furthermore, the same reference numerals are used for the same or similar elements as those of the conventional EDLC.
  • FIG. 6 shows the unit cell of an EDLC, including a metal casing according to the present invention.
  • the unit cell is indicated by reference numeral 11.
  • the unit cell includes two polarized electrodes 2 and 3 into which an electrolytic solution is impregnated, an insulating separator 4 which is material having an ion exchange characteristic and is disposed between the two electrodes 2 and 3, a gasket 5 which is disposed around the two electrodes 2 and 3 to thus prevent the electrolytic solution from leaking, and upper and lower casings 12 and 13 which are configured such that the elements 2, 3, 4 and 5 are mounted therein and the upper and lower casings 12 and 13 are insulated from each other via the gasket 5, thus constituting a casing body, and which are made of metal material.
  • the unit cell 11 may be used singly, or may be configured such that two or more unit cells are arranged in the upper and lower direction thereof. As shown in FIGS. 7 to 9, an anode (+) electrode 14 and a cathode (-) electrode 15 are bonded with the respective upper and lower casings 12 and 13, and thus a usable EDLC is constructed.
  • the metal casing of the present invention includes a ring-shaped gasket 5, which is provided so as to adhere closely to the inner wall of the lower casing 13, the upper and lower casings 12 and 13, which are coupled to be insulated from each other via the gasket 5, thus constituting a casing body for the EDLC, and the anode and cathode electrodes 14 and 15, which are provided so as to come into contact with the respective surfaces of the upper and lower casings 12 and 13.
  • the bottom of the lower casing 13 includes a protruding central portion 17 and a stepped edge portion 18, heights of which are different from each other due to the step l ⁇ that is formed for that purpose.
  • the thickness of the cathode electrode 15, which is bonded to the lower casing 13, is equal to or less than the protrusion height of the central portion 17, and this cathode electrode 15 is limitedly bonded to an outer surface of the edge portion 18. In this case, it is preferred that the cathode electrode 15 be formed so as to surround the protruding central portion 17.
  • the cathode electrode 15 has no relationship with the thickness of the EDLC, thus reducing the thickness of the EDLC compared with a conventional EDLC.
  • the thickness of the unit cell 11, including the protruding central portion 17 is set to "dl"
  • the anode thickness of the anode electrode 12 is set to "d2”
  • the thickness of the cathode electrode 13 is set to "d3" the total thickness D of the EDLC equals
  • the step 16 advantageously affects the thickness of the EDLC, and the size of the electrode 3, which is mounted in the unit cell 11, is changed according to the location at which the step 16 is formed, and thus the capacitance of the EDLC varies. Accordingly, it is necessary to reduce the thickness of the EDLC and, at the same time, maintain an appropriate capacitance.
  • the step 16 is formed in a portion in which the inner surface of the lower casing 13 and a corner portion of the electrode 3 come into contact with each other. Accordingly, the capacitance of the electrode 3 can be maintained unchanged regardless of the size thereof.
  • the step 16 is formed to be inclined at a predetermined angle ⁇ l, preferably, at an angle of 10 ⁇ 60°.
  • ⁇ l a predetermined angle
  • the presence and inclination of the step 16 enables the lower casing 13 in the unit cell 11 to be prevented from being bent or deformed when coupling with the upper casing 12 is achieved by curling the upper end of the sidewall of the lower casing 13 or when other impacts are applied thereto.
  • the cathode electrode 15 is limitedly bonded to the surface of the edge portion 18 of the lower casing 13. In this case, it is preferred that the cathode electrode 15 be formed to surround the protruding central portion 17. Accordingly, the cathode electrode 15 holds the lower casing 13 that is located inside the cathode electrode 15, thus increasing safety and resistance to external impact. In addition, the location of the cathode electrode 15 with respect to the lower casing 13 is adjusted, and thus there is an advantage in that a boding process, such as welding, can be easily performed.
  • the term 'surrounding' does not necessarily mean the form of being closed, as shown in the drawings, and includes the form of being open on one side.
  • the thickness of the cathode electrode 15, which is bonded to the lower casing 13 has no relationship with the total thickness of the EDLC when reducing the thickness of the EDLC has been described.
  • the thickness of the anode electrode 14, which is bonded to the upper casing 12 may have no relationship with the thickness of the EDLC, or that neither of the electrodes 14 and 15 may have any relationship with the thickness of the EDLC, in the same manner.
  • the EDLC including internal ionic exchange material
  • primary batteries or secondary batteries which use internal chemical reaction material instead of the ion exchange material, may have the same construction as the electric double layer capacitor, except for the reaction material in the battery. Accordingly, the present inventionmay be applied to the primary batteries or the secondary batteries in the same manner.
  • the battery can be thinner than a conventional battery.
  • the location of the step to be formed is appropriately adjusted, so that the battery of the present invention can be configured to have the same capacitance as a conventional battery. That is, according to the present invention, a design can be achieved such that the battery of the present invention is thinner than a conventional battery but the same capacitance is maintained.
  • At least one of the electrodes is formed to surround the protruding central portions of the casing, so that the secure coupling with the casing can be maintained. Furthermore, the casing, including the step, is bent, so that the shape of the battery can be reliably maintained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

L'invention concerne un boîtier métallique pour batteries. Le boîtier métallique comprend un joint annulaire, un boîtier supérieur et un boîtier inférieur ainsi qu'une électrode d'anode et une électrode de cathode. Le joint annulaire est prévu pour empêcher le matériau de réaction interne de fuir. Les boîtiers supérieur et inférieur sont couplés l'un à l'autre et sont isolés l'un de l'autre au moyen du joint. Les électrodes d'anode et de cathode sont fournies sur les boîtiers supérieur et inférieur. Le boîtier supérieur et/ou le boîtier inférieur comprend/comprennent une partie centrale saillante et une partie de bord étagée, dont les hauteurs sont différentes l'une de l'autre en raison d'un étage qui est formé dans la partie inférieure du boîtier correspondant. L'électrode, qui est fournie sur le boîtier présentant l'étage, a une épaisseur supérieure ou égale à la hauteur de saillie de la partie centrale, et est liée à la partie de bord.
PCT/KR2007/006247 2007-10-12 2007-12-04 Boîtier métallique pour batteries Ceased WO2009048199A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0102861 2007-10-12
KR1020070102861A KR100834775B1 (ko) 2007-10-12 2007-10-12 전지용 금속케이스

Publications (1)

Publication Number Publication Date
WO2009048199A1 true WO2009048199A1 (fr) 2009-04-16

Family

ID=39769885

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2007/006247 Ceased WO2009048199A1 (fr) 2007-10-12 2007-12-04 Boîtier métallique pour batteries

Country Status (2)

Country Link
KR (1) KR100834775B1 (fr)
WO (1) WO2009048199A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536596A (en) * 1995-10-16 1996-07-16 Micron Communications, Inc. Method of forming a button-type battery and button-type battery
US5952121A (en) * 1994-03-02 1999-09-14 Micron Communications, Inc. Button-type battery with improved separator and gasket construction
US6358645B1 (en) * 1997-09-30 2002-03-19 Sony Corporation Non-aqueous electrolyte secondary battery
US6365298B2 (en) * 1995-02-22 2002-04-02 Micron Technology, Inc. Thin profile batteries

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3548960B2 (ja) * 2001-08-10 2004-08-04 川崎重工業株式会社 廃ガラスびんの払い出し装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5952121A (en) * 1994-03-02 1999-09-14 Micron Communications, Inc. Button-type battery with improved separator and gasket construction
US6365298B2 (en) * 1995-02-22 2002-04-02 Micron Technology, Inc. Thin profile batteries
US5536596A (en) * 1995-10-16 1996-07-16 Micron Communications, Inc. Method of forming a button-type battery and button-type battery
US6358645B1 (en) * 1997-09-30 2002-03-19 Sony Corporation Non-aqueous electrolyte secondary battery

Also Published As

Publication number Publication date
KR100834775B1 (ko) 2008-06-05

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