WO2012121051A1 - 電気部品、非水電解質電池およびそれに用いるリード線及び封入容器 - Google Patents
電気部品、非水電解質電池およびそれに用いるリード線及び封入容器 Download PDFInfo
- Publication number
- WO2012121051A1 WO2012121051A1 PCT/JP2012/054854 JP2012054854W WO2012121051A1 WO 2012121051 A1 WO2012121051 A1 WO 2012121051A1 JP 2012054854 W JP2012054854 W JP 2012054854W WO 2012121051 A1 WO2012121051 A1 WO 2012121051A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lead conductor
- heat
- electrolyte battery
- electrical component
- layer
- Prior art date
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- 239000011255 nonaqueous electrolyte Substances 0.000 title claims abstract description 37
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 title abstract description 27
- 239000004020 conductor Substances 0.000 claims abstract description 67
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims abstract description 23
- 230000004927 fusion Effects 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 57
- 239000012793 heat-sealing layer Substances 0.000 claims description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 239000003792 electrolyte Substances 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 239000011342 resin composition Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 abstract description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 21
- 229920005989 resin Polymers 0.000 description 18
- 239000011347 resin Substances 0.000 description 18
- 229910052782 aluminium Inorganic materials 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- -1 phosphorus compound Chemical class 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 5
- 229920005672 polyolefin resin Polymers 0.000 description 5
- 235000019832 sodium triphosphate Nutrition 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 239000005001 laminate film Substances 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 4
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 3
- 229910013870 LiPF 6 Inorganic materials 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QPLNUHHRGZVCLQ-UHFFFAOYSA-K aluminum;[oxido(phosphonooxy)phosphoryl] phosphate Chemical compound [Al+3].OP([O-])(=O)OP([O-])(=O)OP(O)([O-])=O QPLNUHHRGZVCLQ-UHFFFAOYSA-K 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 125000003011 styrenyl group Chemical class [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical group COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Chemical group OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- UEQSFRGFGPJOFQ-UHFFFAOYSA-N F.O=C1OCCO1 Chemical compound F.O=C1OCCO1 UEQSFRGFGPJOFQ-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical group CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- GSGAZHKISLVTJR-UHFFFAOYSA-H [Al+3].[Al+3].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O Chemical compound [Al+3].[Al+3].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O GSGAZHKISLVTJR-UHFFFAOYSA-H 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- DHAHRLDIUIPTCJ-UHFFFAOYSA-K aluminium metaphosphate Chemical compound [Al+3].[O-]P(=O)=O.[O-]P(=O)=O.[O-]P(=O)=O DHAHRLDIUIPTCJ-UHFFFAOYSA-K 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- UQOULBWSWCWZJC-UHFFFAOYSA-N ethene;methyl hydrogen carbonate Chemical compound C=C.COC(O)=O UQOULBWSWCWZJC-UHFFFAOYSA-N 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000000524 functional group Chemical class 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 150000002681 magnesium compounds Chemical class 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid group Chemical group C(\C=C/C(=O)O)(=O)O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011356 non-aqueous organic solvent Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- 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
- H01G9/15—Solid electrolytic capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
-
- 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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
-
- 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
- H01M50/183—Sealing members
-
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- 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
- H01M50/543—Terminals
- H01M50/562—Terminals characterised by the material
-
- 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 to an electrical component used as a power source for a small electronic device, a non-aqueous electrolyte battery such as a lithium ion secondary battery, and a lead wire and a sealed container which are members constituting these.
- a nonaqueous electrolyte battery in which a bag body is used as an enclosure and a nonaqueous electrolyte (electrolyte), a positive electrode, and a negative electrode are enclosed therein is employed.
- a nonaqueous electrolyte an electrolytic solution in which a lithium salt containing fluorine such as LiPF 6 or LiBF 4 is dissolved in a non-aqueous organic solvent such as propylene carbonate, ethylene carbonate, dimethyl carbonate, or ethylene methyl carbonate is used.
- a bag-like shape is usually obtained by heat-sealing a laminated film in which a metal layer such as an aluminum foil is coated with a resin.
- the enclosed container is used.
- One end of the enclosure is an opening, and a lead conductor connected to one end of the positive electrode plate and the negative electrode plate enclosed in the container extends from the inside of the enclosure to the outside through the opening.
- the opening is heat-sealed (heat-sealed) to bond the enclosure and the lead conductor to seal the opening. This last part to be heat-sealed is called a seal part.
- the sealed container and the lead conductor are bonded (heat-sealed) via a heat-sealing layer, and the heat-sealing layer is previously provided in a portion corresponding to the seal portion of the lead conductor, or It may be provided in a portion corresponding to the seal portion of the enclosure.
- the seal portion is required to maintain a sealing property (sealing property) without causing a short circuit between the metal layer and the lead conductor.
- Patent Document 1 discloses a battery encapsulating bag and a lead wire used in such a non-aqueous electrolyte battery.
- a heat-fusible layer a maleic acid-modified polyolefin layer is provided directly on the conductor of the lead conductor and heat-sealed. It is described that the sealing performance of the seal portion can be improved by using a layer.
- Patent Document 2 discloses an aminated phenol polymer on the surface and side surfaces of a lead conductor whose surface is nickel.
- a battery tab in which a composite film layer of a trivalent chromium compound and a phosphorus compound is formed has been proposed. It is described that by forming a composite coating layer, corrosion of the nickel layer by hydrofluoric acid generated by the electrolyte and moisture can be prevented, and elution of the nickel layer can be prevented.
- Patent Document 3 it is proposed to provide a layer made of an acid-modified styrene elastomer at a portion of the seal portion that contacts the lead conductor.
- the present invention has been made in view of such a problem, and an object of the present invention is to provide an electrical component, a nonaqueous electrolyte battery, and a non-aqueous electrolyte battery having improved sealing performance (sealing performance) and resistance to electrolytic solution at the sealing section. It is to provide a lead wire and a sealed container.
- An electrical component includes an enclosing container having a metal layer and a lead conductor extending from the inside of the enclosing container to the outside, and the electricity formed by thermally sealing the enclosing container and the lead conductor at a seal portion. It is a component, and at least a part of the seal portion has a heat-sealing layer containing condensed aluminum phosphate at a portion between the metal layer and the lead conductor and in contact with the lead conductor.
- the heat fusion layer is preferably composed of a resin composition containing 1 to 33 parts by mass of condensed aluminum phosphate per 100 parts by mass of the acid-modified polyolefin. It is preferably 1 to 10 ⁇ m.
- the nonaqueous electrolyte battery of the present invention includes an enclosing container having a metal layer, a lead conductor extending from the inside of the enclosing container, a nonaqueous electrolyte encapsulated in the enclosing container, and the inside of the enclosing container
- a non-aqueous electrolyte battery comprising an electrode connected to an end portion of the lead conductor, wherein the sealed container and the lead conductor are heat-sealed at a seal portion, and at least a part of the seal portion
- a heat-sealing layer containing condensed aluminum phosphate is contained in a portion between the metal layer and the lead conductor and in contact with the lead conductor.
- the lead wire of the present invention is a lead wire used in the electric component or non-aqueous electrolyte battery of the present invention, and covers the lead conductor and at least a portion corresponding to the seal portion of the lead conductor, and the lead conductor A heat-bonding layer in contact with the heat-bonding layer, wherein the heat-bonding layer contains condensed aluminum phosphate.
- the lead conductor is preferably made of nickel or a metal plated with nickel on the surface.
- the encapsulated container of the present invention is an encapsulated container used for the electric component or the nonaqueous electrolyte battery of the present invention, and includes a metal layer and a heat fusion layer that covers at least a portion of the metal layer corresponding to the seal portion. And the heat-fusible layer contains condensed aluminum phosphate in a portion in contact with the lead conductor.
- the heat-fusible layer constituting the seal portion is excellent in hydrogen fluoride acid resistance, so that it is used for an electrical component having a seal portion excellent in electrolytic solution resistance, a non-aqueous electrolyte battery, and these. Lead wires and enclosures can be provided.
- FIG. 1 is a front view schematically showing one embodiment of a nonaqueous electrolyte battery such as a lithium ion battery
- FIG. 2 is a partial cross-sectional view taken along the line AA ′ of FIG.
- a nonaqueous electrolyte battery 1 shown in FIG. 1 has a substantially rectangular enclosure 2 and a lead conductor 3 extending from the inside of the enclosure 2 to the outside.
- the encapsulating container 2 has two laminated films 8 each composed of a metal layer 5 and resin layers 6 and 7 covering the metal layer 5, and the lead conductor 3 passes therethrough.
- the resin layers 7 are bonded to each other at three sides (periphery) other than the sides by heat sealing or the like to form a bag shape.
- positive and negative electrode current collectors 10 and 11 a nonaqueous electrolyte 13, and a separator 12 connected to the end of the lead conductor 3 are enclosed.
- the lead conductor 3 is made of a metal such as aluminum, nickel, copper, or nickel-plated copper.
- a metal such as aluminum, nickel, copper, or nickel-plated copper.
- aluminum is often used for the positive electrode
- nickel or nickel-plated copper is often used for the negative electrode.
- an aluminum foil or the like is used as the metal layer 5
- a polyamide resin such as 6,6-nylon or 6-nylon is used as the resin layer 6 located outside the enclosing container 2.
- Polyester resin, polyimide resin, or the like can be used.
- an insulating resin that does not dissolve in the non-aqueous electrolyte and melts when heated.
- a polyolefin resin, an acid-modified polyolefin resin, an acid-modified styrene Examples are based on elastomers.
- the lead conductor 3 extends from the inside of the sealed container 2 to the outside, and the lead conductor 3 and the sealed container (laminate film 8) are bonded (heat-sealed) via the heat-sealing layer 4. Is sealed (sealed).
- a resin containing condensed aluminum phosphate is used as the heat fusion layer 4.
- the base resin constituting the heat-sealing layer 4 may be any resin that can be melted by heat at the time of heat sealing so that the sealed container 2 and the lead conductor 3 can be bonded.
- polyolefin resin acid-modified Styrenic elastomers
- the polyolefin resin include polyethylene, polypropylene, ionomer resin, and acid-modified polyolefin.
- an acid-modified polyolefin having an adhesive functional group modified with maleic acid, acrylic acid, methacrylic acid, maleic anhydride or the like is preferable.
- maleic anhydride-modified polyolefin resin is excellent in adhesion to metal and sealing properties.
- Condensed aluminum phosphate is a phosphate produced by polymerization of two or more PO 4 tetrahedra sharing an oxygen atom, specifically, aluminum triphosphate, aluminum tetraphosphate, depending on the degree of polymerization. And the like include aluminum polyphosphate having a linear structure such as: cyclic or long linear aluminum metaphosphate; and aluminum ultraphosphate in which linear and cyclic are bonded to each other.
- Condensed aluminum phosphate is a layered compound in which plate-like crystals overlap with each other in a powder hardly soluble in water. Crystal water may have or may be an anhydride.
- the average particle diameter of the condensed aluminum phosphate used in the present invention is not particularly limited, but is preferably 0.1 to 10 ⁇ m, more preferably 0.5 to 7.0 ⁇ m, and still more preferably 1.0 to 5.0 ⁇ m. .
- the average particle size was measured after the sample was dispersed in a 0.1% aqueous solution of sodium hexametaphosphate using a device “Coulter Multisizer II” manufactured by Beckman Coulter Co., Ltd. and subjected to ultrasonic treatment for 5 minutes. It is. *
- These condensed aluminum phosphates may be surface-treated with silica, zinc compound, magnesium compound, calcium compound or the like, or may be added.
- the acidity can be controlled by surface treatment with these metal compounds or by adding these metal compounds.
- the content of the condensed aluminum phosphate is appropriately selected depending on the configuration of the non-aqueous electrolyte battery, the application, and the type of the base resin.
- the amount is preferably 3 to 30 parts by mass.
- it exists in the tendency for the adhesive force with a conductor to fall and for sealing performance to fall.
- it is less than 1 part by mass, it is too little and the effect of containing condensed aluminum phosphate hardly appears.
- various additives such as a flame retardant, an ultraviolet absorber, a light stabilizer, a heat stabilizer, a lubricant, and a colorant are mixed in the heat-fusible layer as necessary. It is possible.
- the content of these additives is preferably 30% by mass or less based on the entire resin composition.
- a film-like heat-sealing layer is prepared by extrusion molding or the like.
- the thickness of the heat-sealing layer 4 depends on the thickness of the lead conductor 3, it is usually preferably 30 ⁇ m to 200 ⁇ m.
- the heat sealing layer 4 can also be used after being crosslinked by irradiation with ionizing radiation such as an accelerated electron beam or ⁇ -ray.
- ionizing radiation such as an accelerated electron beam or ⁇ -ray.
- the entire heat fusion layer 4 may be crosslinked, or the heat fusion layer 4 may have a multilayer structure, and a non-crosslinked layer and a crosslinked layer may be laminated.
- the heat sealing layer 4 may be provided in advance so as to cover a portion corresponding to the seal portion of the lead conductor 3, or may be provided in a portion in contact with the lead conductor 3 of the laminate film constituting the enclosure 2. .
- FIG. 3 shows a case where the portions (both sides) corresponding to the seal portion of the lead conductor 3 are covered with a heat-sealing film serving as a heat-sealing layer, and the lead thus covered with the heat-sealing film.
- the conductor may be referred to as a lead wire.
- the lead wire is sometimes called a tab lead.
- FIG. 4 shows a case where the heat-sealing layer is provided in advance on the sealed container side.
- the nonaqueous electrolyte battery of the present invention is not limited to the case where the heat-sealing layer is provided in the seal portion with the lead conductor.
- Substituted forms are also included.
- fusion layer 4 are included.
- heat fusion layer may be sandwiched between the lead conductor and the enclosure. Even in these cases, the heat fusion layer may have a multilayer structure.
- the lead conductor is corroded by the resistance to the electrolyte solution, specifically, hydrofluoric acid generated by the reaction with moisture, and the lead conductor metal and the heat fusion layer are sealed at the seal portion. Is prevented, and the durability of the nonaqueous electrolyte battery is improved.
- a passive film is formed on the metal surface of the lead conductor 3 by the action of the condensed aluminum phosphate contained in the heat-sealing layer, and corrosion caused by hydrofluoric acid caused by reaction with moisture is prevented. It is thought to be for suppression.
- the nonaqueous electrolyte battery of this invention is not limited to this.
- the above description has been given by taking a non-aqueous electrolyte battery typified by a lithium ion battery as an example.
- the electronic component of the present invention is not limited to a non-aqueous electrolyte battery.
- Other electrical components that require adhesiveness and are required to have acid resistance to hydrogen fluoride are also included.
- Ethylene carbonate (EC), diethyl carbonate (DEC), and dimethyl carbonate (DMC) are mixed at a volume ratio of 1: 1: 1, and lithium hexafluorophosphate (LiPF 6 ) is used as an electrolyte.
- An electrolyte solution was prepared by dissolving 1.0 mol / l.
- the lead wires of Examples 1 to 3 were immersed in this electrolytic solution, adjusted so that the moisture content of the electrolytic solution was 900 to 1000 ppm, and left in a thermostatic bath at 65 ° C. for 2 weeks, Whether the insulating film and the lead conductor were peeled off was visually observed.
- One of the aluminum trihydrogen phosphate (aluminum triphosphate) 1 to 3 is blended in 50 ⁇ m thick maleic anhydride-modified polypropylene in the amount shown in Table 1, melted and kneaded with a twin-screw mixer, and then melted with a T-die.
- a film having a thickness of 100 mm was produced by extrusion.
- Nickel-plated copper having a thickness of 0.1 mm, a width of 20 mm, and a length of 40 mm was prepared as a negative electrode lead conductor.
- the film produced above was coated on both sides of the lead conductor and pressed at 200 ° C. for 5 seconds to produce a lead wire having the film as a heat-sealing layer.
- initial adhesive force and hydrogen fluoride acid resistance were measured and evaluated. The evaluation results are shown in Table 1.
- the used aluminum dihydrogen tripolyphosphates 1 to 3 are as follows. ⁇ Tripolyaluminum dihydrogen phosphate 1: “K-WHITE # 105” (average particle diameter 1.6 ⁇ m) manufactured by Teika Co., Ltd. ⁇ Tripolyaluminum dihydrogen phosphate 2: “K-WHITE G105” manufactured by Teika Co., Ltd. (average particle size 2.3 ⁇ m) ⁇ Tripolyaluminum dihydrogen phosphate 3: “K-FRESH # 100P” manufactured by Teika Co., Ltd. (average particle size: 1.0 ⁇ m)
- Lead wire No. 1 having a heat-sealing layer containing 5 to 25 parts by mass of aluminum dihydrogen tripolyphosphate.
- the initial adhesive strength was 10 N / cm or more, and the heat-sealing layer was destroyed in the peel test (material destruction).
- peeling was not recognized and the hydrofluoric acid resistance was satisfied.
- no. No. 5 is a case where aluminum dihydrogen tripolyphosphate is not contained. Although it was satisfactory as in 1-4, in the hydrofluoric acid resistance test, peeling was observed after one week, and the acid resistance to hydrogen fluoride was insufficient. In addition, when 35 parts by mass of aluminum dihydrogen tripolyphosphate was contained (No.
- the initial adhesive strength was as small as 5 N / cm, and it was difficult to ensure the adhesiveness required for sealing. Therefore, in order to ensure high sealing performance and acid resistance to hydrogen fluoride by blending aluminum dihydrogen tripolyphosphate, it is preferable that the amount is about 1 to 33 parts by mass per 100 parts by mass of the resin component. Recognize.
- Nonaqueous electrolyte battery 2 Enclosed container 3 Lead conductor 4 Thermal fusion layer 5 Metal layer 6 Resin layer 7 Resin layer 8 Laminate film 9 Seal part 10 Positive electrode current collector 11 Negative electrode current collector 12 Separator 13 Nonaqueous electrolyte 15 Other Resin layer
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Abstract
Description
また、特許文献3の方法では、耐電解液性の評価として、エチレンカーボネートとジエチルカーボネートを1:1の体積比率で混合し、電解質としてLiPF6を1.0mol/lとなるように溶解した電解質にリード線を浸漬した状態で80℃恒温槽内に4週間放置した後の剥がれを評価している。しかしながら、近年、自動車用途に用いられる電気部品等においては、長期間の耐久性が求められるようになっていることから、シール部の耐電解液性をさらに向上することが課題となっている。
図1は、リチウムイオン電池などの非水電解質電池の一実施形態を模式的に表す正面図であり、図2は図1のA-A’部における部分断面図である。
封入容器2は、図2に示されるように、金属層5と、金属層5を被覆する樹脂層6、7とからなる3層のラミネートフィルム8を2枚重ね合わせ、リード導体3が貫通する辺以外の3辺(周縁)をヒートシール等により樹脂層7同士を接着して袋状としたものである。
本発明の非水電解質電池は、熱融着層をリード導体とのシール部に設けた場合に限定せず、さらに、図5に示すように、樹脂層7の全部を熱融着層4に置き換えた形態も包含する。また、図6に示すように、絶縁樹脂層7の一部(シール部に対応する部分)を熱融着層4に置き換えた形態等も包含する。
(1)初期接着力
作製したリード線を10mm幅に切断し、熱融着層とリード導体との接着力を180°剥離試験で測定した。なお引張速度は100mm/分とした。
エチレンカーボネート(EC)、ジエチルカーボネート(DEC)、炭酸ジメチル(DMC)を1:1:1の体積比率で混合し、電解質として六フッ化リン酸リチウム(LiPF6)を1.0mol/lとなるように溶解した電解液を準備した。この電解液に実施例1~3のリード線を浸漬し、電解液の水分率が900~1000ppmになるように調整して65℃の恒温槽内に2週間放置した後、熱融着層となる絶縁フィルムとリード導体との剥がれがないかどうかを目視で観察した。
厚み50μmの無水マレイン酸変性ポリプロピレンに、トリポリリン酸2水素アルミニウム(トリリン酸アルミニウム)1~3のいずれかを表1に示す量だけ配合し、二軸混合機で溶融混練した後、Tダイで溶融押出することにより、厚み100mmのフィルムを作成した。
負極用のリード導体として厚さ0.1mm、幅20mm、長さ40mmのニッケルめっき銅を準備した。上記で作製したフィルムをリード導体の両面に被覆して200℃で5秒プレスすることにより、上記フィルムを熱融着層とするリード線を作製した。
作製したリード線について、上記評価方法に基づいて、初期接着力、耐フッ化水素酸性を測定評価した。評価結果をあわせて表1に示す。
・トリポリリン酸2水素アルミニウム1:テイカ株式会社製の「K-WHITE #105」(平均粒径1.6μm)
・トリポリリン酸2水素アルミニウム2:テイカ株式会社製の「K-WHITE G105」(平均粒径2.3μm)
・トリポリリン酸2水素アルミニウム3:テイカ株式会社製の「K-FRESH #100P」(平均粒径1.0μm)
一方、No.5はトリポリリン酸2水素アルミニウムを含有しない場合であり、初期接着力はNo.1-4と同様に満足することができたが、耐フッ化水素酸試験において、1週間後には剥がれが認められ、耐フッ化水素酸性が不十分であった。
また、トリポリリン酸2水素アルミニウムを35質量部含有させた場合(No.6)では、初期接着力が5N/cmと小さく、密封に必要な接着性を確保することが困難であった。従って、トリポリリン酸2水素アルミニウムを配合させることにより、高度な密封性、耐フッ化水素酸性を確保するためには、樹脂成分100質量部あたり、1~33質量部程度とすることが好ましいことがわかる。
2 封入容器
3 リード導体
4 熱融着層
5 金属層
6 樹脂層
7 樹脂層
8 ラミネートフィルム
9 シール部
10 正極集電体
11 負極集電体
12 セパレータ
13 非水電解質
15 他の樹脂層
Claims (7)
- 金属層を有する封入容器と、前記封入容器の内部から外部に延びるリード導体とを有し、前記封入容器と前記リード導体とがシール部で熱融着されてなる電気部品であって、
前記シール部の少なくとも一部において、前記金属層と前記リード導体との間であって前記リード導体と接する部分に、縮合リン酸アルミニウムを含有する熱融着層を有することを特徴とする電気部品。 - 前記熱融着層は、酸変性ポリオレフィン100質量部あたり縮合リン酸アルミニウム1~33質量部含有する樹脂組成物で構成されている請求項1に記載の電気部品。
- 前記縮合リン酸アルミニウムの平均粒径は、0.1~10μmである請求項1又は2に記載の電気部品。
- 金属層を有する封入容器、前記封入容器の内部から外部に延びるリード導体、並びに、前記封入容器の内部に封入された非水電解質及び前記封入容器の内部に封入され、前記リード導体の端部に接続される電極を有し、前記封入容器と前記リード導体とがシール部で熱融着されてなる非水電解質電池であって、
前記シール部の少なくとも一部において、前記金属層と前記リード導体との間であって前記リード導体と接する部分に、縮合リン酸アルミニウムを含有する熱融着層を有することを特徴とする非水電解質電池。 - 請求項1~3のいずれか1項に記載の電気部品、又は請求項4に記載の非水電解質電池に用いられるリード線であって、
リード導体と、前記リード導体の少なくとも前記シール部に対応する部分を被覆し、前記リード導体と接する熱融着層とを有し、該熱融着層が縮合リン酸アルミニウムを含有することを特徴とするリード線。 - 前記リード導体は、ニッケル又はニッケルを表面にめっきした金属からなる、請求項5に記載のリード線。
- 請求項1~3のいずれか1項に記載の電気部品、又は請求項4に記載の非水電解質電池に用いられる封入容器であって、
金属層と、前記金属層の少なくとも前記シール部に対応する部分を被覆する熱融着層を有し、前記リード導体と接する部分において、前記熱融着層が縮合リン酸アルミニウムを含有することを特徴とする封入容器。
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US13/806,412 US9585276B2 (en) | 2011-03-04 | 2012-02-28 | Electrical part, nonaqueous electrolyte cell, and lead wire and sealable container for use therein |
KR1020137000172A KR101427541B1 (ko) | 2011-03-04 | 2012-02-28 | 전기 부품, 비수 전해질 전지 및 그것에 이용하는 리드선 및 봉입 용기 |
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JP2015170464A (ja) * | 2014-03-06 | 2015-09-28 | 旭化成株式会社 | 非水電解質二次電池 |
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JP6759970B2 (ja) * | 2016-10-24 | 2020-09-23 | 住友電気工業株式会社 | リード部材 |
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