TW201703310A - Housing of electricity storage device and electricity storage device including a metal layer that is formed by a metal foil and a thermoplastic resin layer laminated on one side of the metal layer - Google Patents
Housing of electricity storage device and electricity storage device including a metal layer that is formed by a metal foil and a thermoplastic resin layer laminated on one side of the metal layer Download PDFInfo
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- TW201703310A TW201703310A TW105112140A TW105112140A TW201703310A TW 201703310 A TW201703310 A TW 201703310A TW 105112140 A TW105112140 A TW 105112140A TW 105112140 A TW105112140 A TW 105112140A TW 201703310 A TW201703310 A TW 201703310A
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- Prior art keywords
- layer
- metal
- metal layer
- storage device
- conductive
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 287
- 239000002184 metal Substances 0.000 title claims abstract description 287
- 239000011888 foil Substances 0.000 title claims abstract description 93
- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 56
- 238000003860 storage Methods 0.000 title claims description 66
- 230000005611 electricity Effects 0.000 title description 3
- 239000010410 layer Substances 0.000 claims abstract description 334
- 239000000853 adhesive Substances 0.000 claims abstract description 43
- 230000001070 adhesive effect Effects 0.000 claims abstract description 39
- 238000007747 plating Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000011247 coating layer Substances 0.000 claims abstract description 28
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 27
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 27
- 238000005253 cladding Methods 0.000 claims abstract description 13
- 239000003792 electrolyte Substances 0.000 claims description 69
- 229920005989 resin Polymers 0.000 claims description 54
- 239000011347 resin Substances 0.000 claims description 54
- 230000002093 peripheral effect Effects 0.000 claims description 39
- 239000007774 positive electrode material Substances 0.000 claims description 23
- 239000007773 negative electrode material Substances 0.000 claims description 22
- 239000012752 auxiliary agent Substances 0.000 claims description 19
- 239000007769 metal material Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 4
- 239000002344 surface layer Substances 0.000 claims 1
- 239000002482 conductive additive Substances 0.000 abstract 1
- 239000012790 adhesive layer Substances 0.000 description 27
- 238000005260 corrosion Methods 0.000 description 19
- 230000007797 corrosion Effects 0.000 description 19
- 239000011248 coating agent Substances 0.000 description 17
- 238000000576 coating method Methods 0.000 description 17
- -1 polypropylene Polymers 0.000 description 13
- 239000000126 substance Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 239000002041 carbon nanotube Substances 0.000 description 10
- 229910021393 carbon nanotube Inorganic materials 0.000 description 10
- 238000007789 sealing Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 8
- 239000005022 packaging material Substances 0.000 description 8
- 229920003048 styrene butadiene rubber Polymers 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- 239000006229 carbon black Substances 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 229920002239 polyacrylonitrile Polymers 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 239000002033 PVDF binder Substances 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 239000002174 Styrene-butadiene Substances 0.000 description 5
- 150000001336 alkenes Chemical class 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical class [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920001661 Chitosan Chemical class 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920006284 nylon film Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
- 229920000178 Acrylic resin Chemical class 0.000 description 2
- 239000004925 Acrylic resin Chemical class 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229920006184 cellulose methylcellulose Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical class [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011255 nonaqueous electrolyte Substances 0.000 description 2
- 229910052755 nonmetal Chemical class 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229920000831 ionic polymer Polymers 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
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- 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
-
- 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
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- 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
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- 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
- H01M50/121—Organic material
-
- 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
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/133—Thickness
-
- 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
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/145—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against corrosion
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
-
- 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
- H01M50/545—Terminals formed by the casing of the 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
本發明係關於一種用於行動用蓄電池、汽車用蓄電池、再生能源回收用之蓄電池、電容器(蓄電器)等所使用之蓄電裝置、及如此之蓄電裝置用之外裝體。 The present invention relates to a power storage device used for a battery for operation, a battery for an automobile, a battery for recycling renewable energy, a capacitor (storage device), and the like, and an external body for such a power storage device.
近年，伴隨著智慧型手機、平板電腦終端等之攜帶機器之薄型化、輕量化，作為此等設備所搭載之鋰離子充電電池和鋰聚合物充電電池之外裝材，目前正使用在金屬箔之兩面貼合樹脂薄膜所成層壓外裝材以取代傳統之金屬罐。相同地，目前亦檢討將電容器、蓄電器等使用層壓外裝材者，作為備用電源，而搭載於IC卡及電子機器。 In recent years, lithium-ion rechargeable batteries and lithium-polymer rechargeable batteries, which are equipped with these devices, are currently being used in metal foils, as they are thinner and lighter than portable devices such as smart phones and tablet terminals. The two sides are laminated with a resin film to form a laminated outer material to replace the conventional metal can. Similarly, the use of laminated external materials such as capacitors and electric storage devices has been reviewed and used as an emergency power source for IC cards and electronic devices.
金屬箔之兩面貼合樹脂薄膜之層壓外裝材內收容電池本體部者，例如，撓性薄膜所成之密閉外裝材內，積層之正極、隔膜、以及負極、且收容電解質構成之電池構成物質之卡電池，前述外裝材，使用依序積層熱可塑性樹脂、金屬箔、及熱可塑性樹脂所構成之層壓薄膜之電池為習知(參照專利文獻1)。 In the laminated outer casing in which the resin film is bonded to both sides of the metal foil, the battery body portion is housed in, for example, a sealed outer casing made of a flexible film, a laminated positive electrode, a separator, and a negative electrode, and a battery containing the electrolyte. In the card battery of the constituting material, a battery using a laminated film comprising a thermoplastic resin, a metal foil, and a thermoplastic resin in this order is known (see Patent Document 1).
【專利文獻1】日本特開2005-56854號公報 [Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-56854
然而，專利文獻1所記載之電池，必須設置從電極導出之接片線(接線)，因此有零件數量增加之問題。此外，此接片線，必須在層壓外裝材之周緣之熱密封部分固定，因此增加製造時之程序而耗費時間之問題。 However, in the battery described in Patent Document 1, it is necessary to provide a tab wire (wiring) derived from the electrode, and thus there is a problem that the number of components increases. In addition, the tab wire must be fixed at the heat-sealed portion of the periphery of the laminated exterior material, thereby increasing the time required for the manufacturing process.
本發明，係有鑑於該技術背景所成之物，提供一種不需接片便可通電，且同時提升有問題之構成外裝體之金屬層之露出部分之耐腐蝕性(耐電解質性等)之蓄電裝置及此種蓄電裝置用外裝體。 The present invention provides a corrosion resistance (electrolyte resistance, etc.) of an exposed portion of a metal layer constituting an exterior body which can be energized without requiring a tab, in view of the background of the present invention. The power storage device and the exterior body for such a power storage device.
為達成前述目的，本發明提供以下技術手段。 To achieve the foregoing objects, the present invention provides the following technical means.
〔1〕一種蓄電裝置用外裝體，其特徵係具備金屬層、及該金屬層之一側的面上積層之熱可塑性樹脂層；前述金屬層之一側的面之一部份，設置未覆蓋前述熱可塑性樹脂層之導電部，前述金屬層，係使用：(A)至少一面施有鍍覆處理之金屬箔、(B)包覆材所成金屬箔、(C)至少一面積層有導電性金屬氧化物之金屬箔，或 者，(D)至少一面積層有導電性被覆層之金屬箔，且前述導電性被覆層含有導電助劑及接著劑者。 [1] An exterior body for a power storage device, comprising: a metal layer; and a thermoplastic resin layer laminated on one side of the metal layer; and a portion of the surface on one side of the metal layer is provided Covering the conductive portion of the thermoplastic resin layer, the metal layer is made of (A) a metal foil to which at least one surface is plated, (B) a metal foil formed by the cladding material, and (C) at least one area layer is electrically conductive Metal foil of a metal oxide, or (D) A metal foil having a conductive coating layer on at least one area, and the conductive coating layer containing a conductive auxiliary agent and an adhesive.
〔2〕一種蓄電裝置用外裝體，其特徵係具備金屬層、及該金屬層之一側的面上積層之熱可塑性樹脂層；前述金屬層之一側的面之一部份，設置未覆蓋前述熱可塑性樹脂層之導電部：且前述金屬層，係使用：(A)至少於前述熱可塑性樹脂層側之面施有鍍覆處理之金屬箔、(B)包覆材所成金屬箔，且係至少於其之前述熱可塑性樹脂層側的面上配置有高耐電解質性的金屬材所成者、(C)至少於前述熱可塑性樹脂層側之面積層有導電性金屬氧化物之金屬箔，或者，(D)至少於前述熱可塑性樹脂層側之面積層有導電性被覆層，且前述導電性被覆層含有導電助劑及接著劑之金屬箔。 [2] An exterior body for an electrical storage device, comprising: a metal layer; and a thermoplastic resin layer laminated on one side of the metal layer; and a portion of the surface on one side of the metal layer is not provided Covering the conductive portion of the thermoplastic resin layer: (A) a metal foil to which a plating treatment is applied on at least the surface of the thermoplastic resin layer side, and (B) a metal foil formed by the cladding material Further, at least a metal material having high electrolyte resistance is disposed on a surface of the thermoplastic resin layer side, and (C) at least an area layer of the thermoplastic resin layer side is provided with a conductive metal oxide. The metal foil or (D) has a conductive coating layer on at least the area layer on the side of the thermoplastic resin layer, and the conductive coating layer contains a metal foil of a conductive auxiliary agent and an adhesive.
〔3〕如前項1或2所記載之蓄電裝置用外裝體，其中，前述金屬層之另一側的面積層有絕緣樹脂薄膜，且前述金屬層之另一側的面之一部分，設置未覆蓋前述絕緣樹脂薄膜之端子部。 The outer casing for a power storage device according to the above aspect, wherein the outer layer of the metal layer has an insulating resin film, and one of the surfaces of the other side of the metal layer is not provided. The terminal portion of the insulating resin film is covered.
〔4〕一種蓄電裝置，其特徵係具備如前項1~3所記載之蓄電裝置用外裝體2張、及裝置本體部；且前述蓄電裝置係將前述2張外裝體配置為兩者之熱可塑性樹脂層相互對向，並使前述裝置本體部收容於前述2張外裝體間之空間，且前述裝置本體部之電極與前述外裝體之導電部連接，前述2張外裝體之周緣部的各熱可塑性樹脂層相互接合密封者。 [4] A power storage device comprising: two outer casings for a power storage device according to the above items 1 to 3, and an apparatus main body portion; and the electric storage device is configured to arrange the two outer casings The thermoplastic resin layers face each other, and the apparatus main body portion is housed in a space between the two outer casings, and an electrode of the apparatus main body portion is connected to a conductive portion of the outer casing, and the two outer casings are Each of the thermoplastic resin layers in the peripheral portion is joined to each other by a sealer.
〔5〕一種蓄電裝置，其特徵係具備正極部，該正極部含有第一金屬層、及該第一金屬層之一側的面之一部份的區域所積層正極活性物質層；負極部，該負極部含有第二金屬層、及該第二金屬層之一側的面之一部份的區域所積層之負極活性物質層；及隔板，配置於前述正極部與前述負極部之間；且前述正極活性物質係配置於前述第一金屬層與前述隔板之間，前述負極活性物質係配置於前述第二金屬層及前述隔板之間；前述第一金屬層及前述第二金屬層，係使用：(A)至少於前述隔板側之面施有鍍覆處理之金屬箔、(B)包覆材所成金屬箔，且係至少於其之前述隔板側的面上配置有高耐電解質性的金屬材所成者、(C)至少於前述隔板側之面積層有導電性金屬氧化物之金屬箔，或者，(D)至少於前述隔板側之面積層有導電性被覆層，且前述導電性被覆層含有導電助劑及接著劑之金屬箔，前述正極部之第一金屬層的前述一側之面上未形成正極活性物質的周緣部區域，與前述負極部之第二金屬層的前述一側之面上未形成負極活性物質層的周緣部區域，係介有含有熱可塑性樹脂所成之周緣密封層而接合者。 [5] A power storage device comprising: a positive electrode portion including a first metal layer; and a positive electrode active material layer in a region of one of the surfaces on one side of the first metal layer; and a negative electrode portion; The negative electrode portion includes a second metal layer and a negative electrode active material layer in a region of a portion of the surface on one side of the second metal layer; and a separator disposed between the positive electrode portion and the negative electrode portion; And the positive electrode active material is disposed between the first metal layer and the separator, the negative electrode active material is disposed between the second metal layer and the separator; and the first metal layer and the second metal layer (A) a metal foil to which a plating treatment is applied on at least the surface of the separator side, and (B) a metal foil formed by the cladding material, and at least a surface on the separator side thereof is disposed (C) a metal foil having a conductive metal oxide in at least the area layer on the separator side, or (D) at least an area layer on the separator side having conductivity a coating layer, and the conductive coating layer contains a conductive aid The metal foil of the agent and the adhesive agent, the peripheral portion of the positive electrode active material is not formed on the surface of the first metal layer of the positive electrode portion, and the surface of the second metal layer of the negative electrode portion is not The peripheral portion region of the negative electrode active material layer is formed by interposing a peripheral sealing layer made of a thermoplastic resin.
〔6〕如前項5所記載之蓄電裝置，其中，前述第一金屬層之另一側之面積層有第一絕緣樹脂薄膜，且前述第一金屬層之另一側之面的一部分，設置未覆蓋前述第一絕緣樹脂薄膜之正極端子部，前述第二金屬層之另一側之面積層有第二絕緣樹脂薄膜，且前述第二 金屬層之另一側之面的一部分，設置未覆蓋前述第二絕緣樹脂薄膜之負極端子部。 [6] The electric storage device according to [5], wherein the first layer of the first metal layer has a first insulating resin film, and a part of the surface of the other side of the first metal layer is not provided. Covering the positive terminal portion of the first insulating resin film, the area layer on the other side of the second metal layer has a second insulating resin film, and the second A part of the surface of the other side of the metal layer is provided with a negative electrode terminal portion that does not cover the second insulating resin film.
〔1〕之發明，因連接裝置本體部之導電部(金屬層)作為外裝體之一部分而形成，故即使不使用接片亦可通電。藉由免除接片，對蓄電裝置之輕量化及小型化具有貢獻。此外，金屬層之至少單面，係形成有鍍覆處理部、包裝材中配置有高耐電解質性之金屬材的配置部、導電性金屬氧化物，或導電性被覆層，此等之層(部)，含有耐電解質性而耐腐蝕性優良，因此可提升作為屏障層之金屬層(導電部)的耐腐蝕性(耐電解質性等)。 According to the invention of [1], since the conductive portion (metal layer) of the main portion of the connecting device is formed as a part of the exterior body, the wiring can be energized without using a tab. By eliminating the tabs, it contributes to the weight reduction and miniaturization of the power storage device. Further, at least one side of the metal layer is formed with a plating treatment portion, an arrangement portion of a metal material having a high electrolyte resistance in the packaging material, a conductive metal oxide, or a conductive coating layer, and the like. In addition, since it has electrolyte resistance and is excellent in corrosion resistance, corrosion resistance (electrolyte resistance, etc.) of the metal layer (conductive part) which is a barrier layer can be improved.
〔2〕之發明，因連接裝置本體部之導電部(金屬層)係作為外裝體之一部分而形成，故不使用接片亦可通電。藉由去除接片，可貢獻對蓄電裝置之輕量化及小型化。此外，金屬層之熱可塑性樹脂層側，係形成鍍覆處理部、包裝材配置高耐電解質性之金屬材之配置部、導電性金屬氧化物，或導電性被覆層，此等之層(部)，包含耐電解質性之耐腐蝕性優良，因此可提升亦為防護層之金屬層(導電部)之特別係露出部之耐腐蝕性(耐電解質性等)。因此，例如，使用該外裝體構成之蓄電裝置，難以發生電解質漏出等情形。 According to the invention of [2], since the conductive portion (metal layer) of the main body of the connecting device is formed as a part of the outer casing, it is also possible to conduct electricity without using a tab. By removing the tabs, it is possible to contribute to weight reduction and miniaturization of the power storage device. Further, on the side of the thermoplastic resin layer of the metal layer, a plating treatment portion, an arrangement portion of a metal material having a high electrolyte resistance, a conductive metal oxide, or a conductive coating layer, and the like are formed. In addition, since the corrosion resistance including the electrolyte resistance is excellent, the corrosion resistance (electrolyte resistance, etc.) of the exposed portion of the metal layer (conductive portion) of the protective layer can be improved. Therefore, for example, in the power storage device including the exterior body, it is difficult to cause electrolyte leakage or the like.
〔3〕之發明，因金屬層之另一側之面上積層絕緣樹脂薄膜，(端子部除外)可足夠確保絕緣性，且亦可確保物理強度，同時因金屬層之另一側之面之一部分設置未覆蓋絕緣樹脂薄膜之露出部(端子部)，故 可藉由該露出部(端子部)進行通電。 In the invention of [3], since the insulating resin film is laminated on the other side of the metal layer, (except for the terminal portion), insulation can be sufficiently ensured, and physical strength can be ensured, and at the same time, the other side of the metal layer A part of the exposed portion (terminal portion) of the insulating resin film is not covered, so The exposure can be performed by the exposed portion (terminal portion).
〔4〕之發明(蓄電裝置)，因使用前述〔1〕~〔3〕之任一之外裝體所構成，故即使不使用接片亦可通電，其可達到輕量化及小型化，並抑制外裝體之金屬層(導電部)之腐蝕，難以發生電解質漏出等情形。 The invention (the power storage device) of the above [4] is configured by using any of the above-mentioned [1] to [3], and therefore can be energized without using a tab, thereby achieving weight reduction and miniaturization. The corrosion of the metal layer (conductive portion) of the exterior body is suppressed, and it is difficult to cause electrolyte leakage or the like.
〔5〕之發明，構成正極部之第一金屬層及構成負極部之第二金屬層，係發揮作為蓄電裝置之外裝材之機能者，亦即，第一、第二金屬層，係發揮電極(導電部)及外裝材之兩機能者，因此不使用接片亦可通電。藉由免除接片，可實現蓄電裝置之輕量化及小型化。此外，第一金屬層及第二金屬層係，在電解質接觸面(隔板側之面)配置鍍覆處理部、包裝材中配置有高耐電解質性之金屬材之配置部、導電性金屬氧化物，或導電性被覆層，此等之層(部)，係含有耐電解質性而耐腐蝕性優良，因此可提升亦為防護層之金屬層之特別係露出部之耐腐蝕性。因此，該蓄電裝置，難以發生電解質漏出等情形。 According to the invention of the fifth aspect, the first metal layer constituting the positive electrode portion and the second metal layer constituting the negative electrode portion function as a material other than the power storage device, that is, the first and second metal layers are used. Since the electrode (conducting part) and the external material are both functional, they can be energized without using a tab. By eliminating the tabs, it is possible to reduce the weight and size of the power storage device. In addition, in the first metal layer and the second metal layer, a plating treatment portion is disposed on the electrolyte contact surface (the surface on the separator side), and an arrangement portion of the metal material having high electrolyte resistance is disposed in the packaging material, and the conductive metal is oxidized. The material or the conductive coating layer, which has electrolyte resistance and is excellent in corrosion resistance, can improve the corrosion resistance of the exposed portion of the metal layer which is also the protective layer. Therefore, in this power storage device, it is difficult to cause electrolyte leakage or the like.
〔6〕之發明，因第一、二金屬層之另一側的面上個別積層有絕緣樹脂薄膜，(端子部除外)可充分地確保絕緣性，且亦可確保物理強度，同時因第一、二金屬層之另一側的面之一部分設置未覆蓋絕緣樹脂薄膜之露出部(端子部)，從而可藉由該露出部(端子部)進行通電。 In the invention of [6], since the insulating resin film is laminated on the other side of the first and second metal layers, (except for the terminal portion), the insulating property can be sufficiently ensured, and the physical strength can be ensured, and the first The exposed portion (terminal portion) of the insulating resin film is not covered in one of the faces on the other side of the two metal layers, and the exposed portion (terminal portion) can be energized.
1‧‧‧蓄電裝置 1‧‧‧Power storage device
2‧‧‧第一金屬層 2‧‧‧First metal layer
2A‧‧‧第一金屬箔 2A‧‧‧First metal foil
2B‧‧‧鍍覆處理部、高耐電解質性之金屬材配置部、導電性金屬氧化物層、導電性被覆層 2B‧‧‧ plating treatment unit, metal material arrangement portion with high electrolyte resistance, conductive metal oxide layer, and conductive coating layer
3‧‧‧正極活性物質層 3‧‧‧positive active material layer
4‧‧‧第一熱可塑性樹脂層 4‧‧‧First thermoplastic resin layer
5‧‧‧電解質 5‧‧‧ Electrolytes
8‧‧‧第一絕緣樹脂薄膜層 8‧‧‧First insulating resin film layer
9‧‧‧第一露出部(正極端子部) 9‧‧‧First exposed part (positive terminal part)
12‧‧‧第二金屬層 12‧‧‧Second metal layer
12A‧‧‧第二金屬箔 12A‧‧‧Second metal foil
12B‧‧‧鍍覆處理部、高耐電解質性之金屬材配置部、導電性金屬氧化物層、導電性被覆層 12B‧‧‧ plating treatment unit, metal material arrangement portion with high electrolyte resistance, conductive metal oxide layer, and conductive coating layer
13‧‧‧負極活性物質層 13‧‧‧Negative active material layer
14‧‧‧第二熱可塑性樹脂層 14‧‧‧Second thermoplastic resin layer
15‧‧‧電解質 15‧‧‧ Electrolytes
18‧‧‧第二絕緣樹脂薄膜層 18‧‧‧Second insulating resin film layer
19‧‧‧第二露出部(負極端子部) 19‧‧‧Second exposed part (negative terminal part)
21‧‧‧隔板 21‧‧‧Baffle
22‧‧‧正極部 22‧‧‧ positive part
23‧‧‧負極部 23‧‧‧Negative part
31‧‧‧周緣密封層 31‧‧‧perimeter seal
50‧‧‧外裝體 50‧‧‧Outer body
54‧‧‧負極導電部 54‧‧‧Negative Conductive Section
56‧‧‧正極導電部 56‧‧‧positive conductive part
60‧‧‧裝置本體部 60‧‧‧ device body
【圖1】表示第1發明之蓄電裝置之一實施型態的斷面圖； 【圖2】圖1之蓄電裝置之平面圖；【圖3】表示第2發明之蓄電裝置之一實施型態的斜視圖；【圖4】圖3中B-B線的斷面圖；【圖5】表示第2發明之蓄電裝置之其他實施型態的斷面圖。 Fig. 1 is a cross-sectional view showing an embodiment of a power storage device according to a first aspect of the invention; Fig. 2 is a plan view showing a power storage device of Fig. 1; Fig. 3 is a perspective view showing an embodiment of a power storage device according to a second aspect of the invention; Fig. 4 is a sectional view taken along line BB of Fig. 3; A cross-sectional view showing another embodiment of the electrical storage device according to the second aspect of the invention.
第1發明之蓄電裝置1的一實施型態以圖1、2表示。該蓄電裝置1係層壓外裝電池，且其具備：作為裝置本體部之裸電池60、及收納該裸電池60之外裝外殼45。 An embodiment of the electrical storage device 1 according to the first aspect of the invention is shown in Figs. The power storage device 1 is a laminated external battery, and includes a bare cell 60 as a device main body portion and an outer casing 45 that houses the bare cell 60.
如圖1、2所示，外裝外殼45，係將本體51與蓋體(底蓋)55組合製作而成者，前述本體51具有平面視角形之凹部52及從此凹部52之開口緣往外方延伸之凸緣53；前述蓋體(底蓋)55係與前述本體51之凸緣53的外圍尺寸相同者。前述凹部52係形成為裸電池60之收納用空間。 As shown in FIGS. 1 and 2, the outer casing 45 is formed by combining the main body 51 and the cover (bottom cover) 55. The main body 51 has a concave portion 52 having a planar viewing angle and an outward edge from the opening edge of the concave portion 52. The flange 53 is extended; the cover (bottom cover) 55 is the same as the outer circumference of the flange 53 of the body 51. The recess 52 is formed as a storage space for the bare cell 60.
作為前述本體51之構成材，係使用外裝體50，前述外裝體50具備：第二金屬層12、該第二金屬層12之一側之面(第一面)上積層之第二熱可塑性樹脂層14、前述該第二金屬層12之另一側之面(第二面)上積層之第二絕緣樹脂薄膜18。此外裝體50之前述第二金屬層12之一側之面之一部分，設有未被前述第二熱可塑性樹脂層覆蓋之負極導電部54。本實施型態，係前述第二金屬層12之一側之面之中央部形成前述負極導電部54。此外，前述第二金屬層12之另一側之面之一部分，設有未覆蓋前述第二絕緣樹脂薄膜之負極端子部19。本實施型 態，係前述第二金屬層12之另一側之面的中央部形成前述負極端子部19。 As the constituent material of the main body 51, an exterior body 50 is used, and the exterior body 50 includes a second heat of a second metal layer 12 and a surface (first surface) on one side of the second metal layer 12 The second insulating resin film 18 is laminated on the plastic resin layer 14 and the other surface (second surface) of the second metal layer 12. Further, a portion of the surface of the one side of the second metal layer 12 of the package 50 is provided with a negative electrode conductive portion 54 which is not covered by the second thermoplastic resin layer. In the present embodiment, the negative electrode conductive portion 54 is formed at a central portion of the surface on one side of the second metal layer 12. Further, a portion of the surface of the other side of the second metal layer 12 is provided with a negative electrode terminal portion 19 which is not covered with the second insulating resin film. This embodiment The negative electrode terminal portion 19 is formed at a central portion of the surface on the other side of the second metal layer 12.
作為前述蓋體55之構成材，係使用之外裝體50，前述外裝體50具備：第一金屬層2、該第一金屬層2之一側之面(第一面)上積層之第一熱可塑性樹脂層4、及前述第一金屬層2之另一側之面(第二面)上積層第一絕緣樹脂薄膜8。此外裝體50之前述第一金屬層2之一側之面之一部分，設有未覆蓋前述第一熱可塑性樹脂層之正極導電部56。本實施型態，係前述第一金屬層2之一側之面之中央部形成前述正極導電部56。前述第一金屬層2之另一側之面之一部分，設有未被前述第一絕緣樹脂薄膜覆蓋之正極端子部9。本實施型態，係前述第一金屬層2之另一側之面之中央部形成前述正極端子部9 As the constituent material of the lid body 55, the exterior body 50 is used, and the exterior body 50 includes a first metal layer 2 and a layer on the one side (first surface) of the first metal layer 2 A first insulating resin film 8 is laminated on the surface (second surface) of the other thermoplastic resin layer 4 and the other side of the first metal layer 2. Further, a portion of the surface of the one side of the first metal layer 2 of the package 50 is provided with a positive electrode conductive portion 56 which is not covered with the first thermoplastic resin layer. In the present embodiment, the positive electrode conductive portion 56 is formed at a central portion of the surface on the one side of the first metal layer 2. A portion of the surface of the other side of the first metal layer 2 is provided with a positive electrode terminal portion 9 which is not covered by the first insulating resin film. In the present embodiment, the positive electrode terminal portion 9 is formed at a central portion of the surface of the other side of the first metal layer 2.
此外，前述第一金屬層2係使用，第一金屬箔2A之至少電解質接觸側(裝置本體部60側、第一熱可塑性樹脂層4側)上配置， Further, the first metal layer 2 is used, and at least the electrolyte contact side (the apparatus main body portion 60 side and the first thermoplastic resin layer 4 side) of the first metal foil 2A is disposed.
i)鍍覆處理部2B i) Plating treatment unit 2B
ii)包裝材所成之金屬箔配置高耐電解質性之金屬之配置部2B Ii) Metal foil with packaging material is arranged with high electrolyte resistance metal arrangement part 2B
iii)導電性金屬氧化物2B Iii) Conductive metal oxide 2B
iv)含有導電助劑及接著劑之導電性被覆部2B Iv) Conductive coating portion 2B containing a conductive auxiliary agent and an adhesive
之任一者(參照圖1)。 Either (see Figure 1).
另外，本實施型態，係採用在前述第一金屬箔2A之兩面，配置前述鍍覆處理部2B、配置部2B、導電性金屬氧化物2B、導電性被覆部2B之任一個之構成(參照圖1)。此外，第1發明，亦可採用前述第一金屬層2，係僅在第一金屬箔2A之第一絕緣樹脂薄膜8側配置，前 述鍍覆處理部2B、配置部2B、導電性金屬氧化物2B、導電性被覆部2B之任一個之構成。 In the present embodiment, the plating treatment portion 2B, the arrangement portion 2B, the conductive metal oxide 2B, and the conductive coating portion 2B are disposed on both surfaces of the first metal foil 2A (see figure 1). Further, in the first aspect of the invention, the first metal layer 2 may be used, and the first metal foil 2 may be disposed only on the first insulating resin film 8 side of the first metal foil 2A. The plating treatment portion 2B, the arrangement portion 2B, the conductive metal oxide 2B, and the conductive coating portion 2B are configured.
此外，前述第二金屬層12，係使用第二金屬箔12A之至少電解質接觸側(裝置本體部60側、第二熱可塑性樹脂層14側)上配置， Further, the second metal layer 12 is disposed on at least the electrolyte contact side (the apparatus main body portion 60 side and the second thermoplastic resin layer 14 side) of the second metal foil 12A.
i)鍍覆處理部12B i) Plating treatment section 12B
ii)包裝材所成之金屬箔配置高耐電解質性之金屬之配置部12B Ii) Metal foil with packaging material is arranged with high electrolyte resistance metal arrangement part 12B
iii)導電性金屬氧化物12B Iii) Conductive metal oxide 12B
iv)含有導電助劑及接著劑之導電性被覆部12B Iv) Conductive coating portion 12B containing a conductive auxiliary agent and an adhesive
之任一者(參照圖1)。 Either (see Figure 1).
另外，本實施型態，採用在前述第二金屬箔12A之兩面，配置前述鍍覆處理部12B、配置部12B、導電性金屬氧化物12B、導電性被覆部12B之任一個之構成(參照圖1)。此外，第1發明，亦可採用前述第二金屬層12，係僅在第二金屬箔12A之第二絕緣樹脂薄膜18側配置，前述鍍覆處理部12B、配置部12B、導電性金屬氧化物12B、導電性被覆部12B之任一個之構成。 In the present embodiment, any one of the plating treatment portion 12B, the arrangement portion 12B, the conductive metal oxide 12B, and the conductive coating portion 12B is disposed on both surfaces of the second metal foil 12A (see FIG. 1). Further, in the first aspect of the invention, the second metal layer 12 may be disposed only on the second insulating resin film 18 side of the second metal foil 12A, and the plating treatment portion 12B, the arrangement portion 12B, and the conductive metal oxide may be used. 12B and any one of the conductive coating portions 12B.
此等第一金屬層2、第二金屬箔12之詳細構成等在之後詳述。 The detailed configuration of the first metal layer 2 and the second metal foil 12 will be described in detail later.
前述本體51，對於平面材之前述外裝體，進行膨脹成形、絞伸成形等之成形形成凹部52，並將凹部52之周圍之未變形部分裁剪成凸緣53之外圍尺寸。另一方面，前述蓋體55係平面材之前述外裝體裁斷成所需尺寸者。前述本體51之凹部52之底部之內面設置負極導電 部54、蓋體55之內面設置正極導電部56(參照圖1)。前述正極導電部56及負極導電部54，藉由露出外裝體50之金屬層之鍍覆處理部等12B之露出部形成。此外，前述正極端子部9及負極端子部19，藉由露出外裝體50之金屬層之露出部形成。 In the main body 51, the outer casing of the flat material is subjected to expansion molding, strand forming or the like to form the concave portion 52, and the undeformed portion around the concave portion 52 is cut into the outer size of the flange 53. On the other hand, the cover body 55 is the outer casing of the flat material cut into a desired size. The inner surface of the bottom of the recess 52 of the body 51 is provided with a negative electrode conductive The positive electrode conductive portion 56 (see FIG. 1) is provided on the inner surface of the portion 54 and the lid body 55. The positive electrode conductive portion 56 and the negative electrode conductive portion 54 are formed by exposing the exposed portion of the plating treatment portion 12B or the like of the metal layer of the outer casing 50. Further, the positive electrode terminal portion 9 and the negative electrode terminal portion 19 are formed by exposing the exposed portion of the metal layer of the exterior body 50.
前述裸電池60，係將片材狀之正極61與片材狀之負極62介有隔板63積層所成，此裸電池60收容於前述2張之外裝體50之間之空間，正極61之端部連接於外裝體50之正極導電部56，負極62之端部連接於外裝體50之負極導電部54(參照圖1)。 The bare cell 60 is formed by laminating a sheet-like positive electrode 61 and a sheet-shaped negative electrode 62 via a separator 63. The bare cell 60 is housed in a space between the two outer casings 50, and the positive electrode 61 The end portion is connected to the positive electrode conductive portion 56 of the outer casing 50, and the end portion of the negative electrode 62 is connected to the negative electrode conductive portion 54 of the outer casing 50 (see Fig. 1).
前述蓄電裝置1，係將裸電池60之正極61及負極62個別接合於正極導電部56、負極導電部54後，裸電池60收納於本體51之凹部52蓋上蓋體55，留下電解質注入口，熱密封本體51之凸緣53及蓋體55之接觸部之熱可塑性樹脂層4、14兩者，注入電解質後藉由熱密封前述電解質注入口達到密封。 In the power storage device 1, the positive electrode 61 and the negative electrode 62 of the bare cell 60 are individually bonded to the positive electrode conductive portion 56 and the negative electrode conductive portion 54, and the bare cell 60 is housed in the recess 52 of the body 51 to cover the lid body 55, leaving the electrolyte injection port. The thermoplastic resin layers 4 and 14 of the contact portion between the flange 53 of the heat-sealing body 51 and the lid body 55 are sealed by heat-sealing the electrolyte injection port after the electrolyte is injected.
上述蓄電裝置1，因在外裝體50設置正極端子部9及負極端子部19，藉由此等端子部可連接其他機器通電。 In the power storage device 1, the positive electrode terminal portion 9 and the negative electrode terminal portion 19 are provided in the exterior body 50, whereby the other terminal devices can be connected to each other to be energized.
前述正極61與正極導電部56之接合手段、前述負極62與負極導電部54之接合手段，雖無特別限定，但可例如，超音波接合、焊接、藉由導電性接著劑之接著等作為例示。 The bonding means of the positive electrode 61 and the positive electrode conductive portion 56 and the bonding means of the negative electrode 62 and the negative electrode conductive portion 54 are not particularly limited, but may be, for example, ultrasonic bonding, soldering, adhesion by a conductive adhesive, or the like. .
上述第1發明之蓄電裝置，因連接裸電池(裝置本體部)之導電部(金屬層)作為外裝體之一部分而形成，不須接片即可通電。藉由去除接片，可實現蓄電裝置之輕量化及小型化。此外，連接金屬層之電解質側之面，因包含耐電解質性之耐腐蝕性優良，由於設置有導電部，去除 具有耐電解質性之熱可塑性樹脂薄膜之金屬層之露出部(導電部)亦能維持提升耐腐蝕性(耐電解質性等)。因此，該蓄電裝置，難以發生電解質漏出等情形。 In the power storage device according to the first aspect of the invention, the conductive portion (metal layer) connected to the bare cell (device body portion) is formed as a part of the exterior body, and the battery can be energized without a tab. By removing the tabs, it is possible to reduce the weight and size of the power storage device. Further, the surface on the electrolyte side of the connection metal layer is excellent in corrosion resistance including electrolyte resistance, and is removed by providing a conductive portion. The exposed portion (conductive portion) of the metal layer of the thermoplastic resin film having electrolyte resistance can also maintain improved corrosion resistance (electrolyte resistance, etc.). Therefore, in this power storage device, it is difficult to cause electrolyte leakage or the like.
接著，第2發明之蓄電裝置之一實施型態如圖3、4所示。此蓄電裝置1具備正極部22、負極部23、及隔板21(參照圖4)。隔板21配置於前述正極部22與前述負極部23之間(參照圖4)。 Next, an embodiment of the power storage device according to the second aspect of the invention is shown in Figs. This power storage device 1 includes a positive electrode portion 22, a negative electrode portion 23, and a separator 21 (see Fig. 4). The separator 21 is disposed between the positive electrode portion 22 and the negative electrode portion 23 (see FIG. 4).
前述正極部22，含有第一金屬層2及該第一金屬層2之一側之面(隔板側之面)中一部分之區域上積層正極活性物質層3。本實施型態，前述第一金屬層2之一側之面(隔板側之面)之中央部(除去周緣部之區域)上積層正極活性物質層3。此外，本實施型態，圖所標示前述第一金屬層2為，施加鍍覆處理之金屬箔、或包覆材構成之金屬箔時，前述第一金屬層2之一側之面(隔板側之面)之全部積層黏著劑層7。亦即，本實施型態，前述第一金屬層2之一側之面(隔板側之面)介由前述黏著劑層7積層前述正極活性物質層3(參照圖4)。另外，第一金屬層2，使用積層含有導電助劑及接著劑之導電性被覆層的金屬箔時，可不設置前述黏著劑層7。 The positive electrode portion 22 includes a positive electrode active material layer 3 laminated on a portion of the surface of the first metal layer 2 and the surface of the first metal layer 2 (the surface on the separator side). In the present embodiment, the positive electrode active material layer 3 is laminated on the central portion (the region excluding the peripheral portion) on the surface (the surface on the separator side) on the one side of the first metal layer 2. Further, in the present embodiment, the first metal layer 2 is a surface on which one side of the first metal layer 2 is formed when a metal foil of a plating treatment or a metal foil made of a cladding material is applied. The entire side of the adhesive layer 7 is laminated. In other words, in the present embodiment, the surface of the first metal layer 2 (the surface on the separator side) is laminated with the positive electrode active material layer 3 via the adhesive layer 7 (see Fig. 4). Further, when the first metal layer 2 is formed by laminating a metal foil containing a conductive coating layer of a conductive auxiliary agent and an adhesive, the adhesive layer 7 may not be provided.
前述負極部23，含有第二金屬層12及該第二金屬層12之一側之面(隔板側之面)中一部分之區域上積層負極活性物質層13。本實施型態，前述第二金屬層12之一側之面(隔板側之面)之中央部(除去周緣部之區域)上積層負極活性物質層13。此外，本實施型態，圖所標示前述第二金屬層12為，施加鍍覆處理之金屬箔、或包覆材構成之金屬箔時，前述第二金屬層12之一側之面(隔板側之面)之全部積層黏著 劑層17。亦即，本實施型態，前述第二金屬層12之一側之面(隔板側之面)介由前述黏著劑層17積層前述負極活性物質層13(參照圖4)。另外，第二金屬層12，使用積層含有導電助劑及接著劑之導電性被覆層之金屬箔時，可不設置前述黏著劑層17。 The negative electrode portion 23 contains a layer of the negative electrode active material layer 13 on a portion of the surface of the second metal layer 12 and the surface of the second metal layer 12 (the surface on the separator side). In the present embodiment, the negative electrode active material layer 13 is laminated on the central portion (the region excluding the peripheral portion) on the surface (the surface on the separator side) on the one side of the second metal layer 12. In addition, in the present embodiment, the second metal layer 12 is a metal foil of a plating treatment or a metal foil made of a cladding material, and the surface of one side of the second metal layer 12 (separator) All sides of the side) Agent layer 17. In other words, in the present embodiment, the surface of the second metal layer 12 (the surface on the separator side) is laminated with the negative electrode active material layer 13 via the adhesive layer 17 (see Fig. 4). Further, when the second metal layer 12 is formed by laminating a metal foil containing a conductive coating layer of a conductive auxiliary agent and an adhesive, the adhesive layer 17 may not be provided.
前述第一金屬層2及前述隔板21之間配置前述正極活性物質層3，前述第二金屬層12與前述隔板21之間配置前述負極活性物質層13(參照圖4)。 The positive electrode active material layer 3 is disposed between the first metal layer 2 and the separator 21, and the negative electrode active material layer 13 is disposed between the second metal layer 12 and the separator 21 (see FIG. 4).
第2發明中，係前述第一金屬層2，使用第一金屬箔2A之至少電解質接觸側(裝置本體部側60)上配置， In the second aspect of the invention, the first metal layer 2 is disposed on at least the electrolyte contact side (the apparatus main body side 60) of the first metal foil 2A.
i)鍍覆處理部2B i) Plating treatment unit 2B
ii)包裝材所成之金屬箔配置高耐電解質性之金屬之配置部2B Ii) Metal foil with packaging material is arranged with high electrolyte resistance metal arrangement part 2B
iii)導電性金屬氧化物2B Iii) Conductive metal oxide 2B
iv)含有導電助劑及接著劑之導電性被覆部2B Iv) Conductive coating portion 2B containing a conductive auxiliary agent and an adhesive
之任一者(參照圖4)。 Either (see Fig. 4).
此外，前述第二金屬層12，使用第二金屬箔12A之至少電解質接觸側(裝置本體部60側)上配置， Further, the second metal layer 12 is disposed on at least the electrolyte contact side (the device body portion 60 side) of the second metal foil 12A,
i)鍍覆處理部12B i) Plating treatment section 12B
ii)包裝材所成之金屬箔配置高耐電解質性之金屬之配置部12B Ii) Metal foil with packaging material is arranged with high electrolyte resistance metal arrangement part 12B
iii)導電性金屬氧化物12B Iii) Conductive metal oxide 12B
iv)含有導電助劑及接著劑之導電性被覆部12B Iv) Conductive coating portion 12B containing a conductive auxiliary agent and an adhesive
之任一者(參照圖4)。 Either (see Fig. 4).
此等第一金屬層2、第二金屬層12之詳細構成等在之後詳 述。 The detailed composition of the first metal layer 2 and the second metal layer 12 will be detailed later. Said.
另外，如圖5所示，前述第一金屬層2，使用在第一金屬箔2A之兩面形成前述鍍覆處理部12B、配置部12B、導電性金屬氧化物12B或導電性被覆部12B者；前述第二金屬層12，亦可採用在第二金屬箔12A之兩面形成鍍覆處理部12B、配置部12B、導電性金屬氧化物12B或導電性被覆部12B者。 Further, as shown in FIG. 5, the first metal layer 2 is formed by forming the plating treatment portion 12B, the arrangement portion 12B, the conductive metal oxide 12B, or the conductive coating portion 12B on both surfaces of the first metal foil 2A; In the second metal layer 12, the plating treatment portion 12B, the arrangement portion 12B, the conductive metal oxide 12B, or the conductive coating portion 12B may be formed on both surfaces of the second metal foil 12A.
在前述正極部22之第一金屬層2之前述一側之面(隔板21側之面)之周緣部，存在未形成正極活性物質層之區域，在前述負極部23之第二金屬層12之前述一側之面(隔板21側之面)之周緣部，存在未形成負極活性物質層之區域。因此，前述正極部22之第一金屬層2之前述一側之面上未形成正極活性物質層之周緣部區域及前述負極部23之第二金屬層12之前述一側之面上未形成負極活性物質層之周緣部區域，介在含有熱可塑性樹脂之周緣密封層31而接合密封(參照圖4)。前述隔板21之周緣部，係於前述周緣密封層31之內周面之高方向(厚方向)之中間部侵入係合之態樣(參照圖4)。 In a peripheral portion of the surface (the surface on the separator 21 side) of the first metal layer 2 of the positive electrode portion 22, a region where the positive electrode active material layer is not formed is present, and the second metal layer 12 of the negative electrode portion 23 is present. The peripheral portion of the surface on the side (the surface on the separator 21 side) has a region where the negative electrode active material layer is not formed. Therefore, the surface of the first metal layer 2 on the side of the first metal layer 2 is not formed with a peripheral portion of the positive electrode active material layer and the surface of the second metal layer 12 of the negative electrode portion 23 is not formed with a negative electrode. The peripheral portion region of the active material layer is bonded and sealed via a peripheral sealing layer 31 containing a thermoplastic resin (see FIG. 4). The peripheral edge portion of the separator 21 is in a state in which the intermediate portion in the high direction (thickness direction) of the inner peripheral surface of the peripheral seal layer 31 is intrusive (see FIG. 4).
本實施型態，係前述正極部22之第一金屬層2之前述一側之面積層之黏著劑層7之未形成正極活性物質層之周緣部區域積層第一周緣接著劑層6；前述負極部23之第二金屬層12之前述一側之面積層之黏著劑層17之未形成負極活性物質層之周緣部區域積層第二周緣接著劑層16，此等兩接著劑層6、16，採用介由前述周緣密封層31接合密封之構成(參照圖4)。 In the present embodiment, the first peripheral edge layer 6 of the adhesive layer 7 of the area layer of the first metal layer 2 of the positive electrode portion 22 is not formed with the peripheral portion of the positive electrode active material layer; The adhesive layer 17 of the area layer of the one side of the second metal layer 12 of the negative electrode portion 23 is not formed with the peripheral portion of the negative electrode active material layer, and the second peripheral adhesive layer 16 is laminated. These two adhesive layers 6, 16 A configuration is adopted in which the peripheral sealing layer 31 is joined and sealed (see FIG. 4).
前述隔板21與前述正極活性物質層3之間封入電解質 5。此外，前述隔板21與前述負極活性物質層13之間封入電解質15(參照圖4)。因第一金屬層2之未形成正極活性物質層之周緣部區域，及第二金屬層12之未形成負極活性物質層之周緣部區域，介由前述周緣密封層31接合密封，可防止電解質5、15之漏出。亦即，前述第一金屬層2之內面側之黏著劑層7與第二金屬層12之內面側之黏著劑層17之間之前述周緣密封層31，以第一周緣接著劑層6及第二周緣接著劑層16包圍之密封空間內，在第一金屬層2側依序配置正極活性物質層3、電解質5、隔板21、電解質15、負極活性物質層13而密封(參照圖4)。 An electrolyte is sealed between the separator 21 and the positive electrode active material layer 3 5. Further, an electrolyte 15 is sealed between the separator 21 and the negative electrode active material layer 13 (see FIG. 4). The peripheral portion of the first metal layer 2 where the positive electrode active material layer is not formed, and the peripheral portion of the second metal layer 12 where the negative electrode active material layer is not formed are bonded and sealed by the peripheral sealing layer 31 to prevent the electrolyte 5 from being formed. , 15 leaked out. That is, the peripheral sealing layer 31 between the adhesive layer 7 on the inner surface side of the first metal layer 2 and the adhesive layer 17 on the inner surface side of the second metal layer 12 is a first peripheral adhesive layer In the sealed space surrounded by the second and second peripheral adhesive layers 16, the positive electrode active material layer 3, the electrolyte 5, the separator 21, the electrolyte 15, and the negative electrode active material layer 13 are sequentially disposed on the first metal layer 2 side to be sealed (refer to Figure 4).
本實施型態，係進一步具備如下構成。亦即，在前述第一金屬層2之另一側之面(隔板一側之面為相反側之面)，以留有該前述第一金屬層2露出之第一露出部(正極端子部)9之態樣，積層第一絕緣樹脂薄膜8且同時，在前述第二金屬層12之另一側之面(隔板一側之面為相反側之面)，以留有該第二金屬層露出之第二露出部(負極端子部)19之態樣，積層第二絕緣樹脂薄膜18。本實施型態，係在前述第一金屬層2之另一側之面(隔板一側之面為相反側之面)，以留有該前述第一金屬層2露出之第一露出部9之態樣，介由第三接著劑層41積層第一絕緣樹脂薄膜8且同時，前述第二金屬層12之另一側之面(隔板一側之面為相反側之面)，以留有該第二金屬層露出之第二露出部19之態樣，介由第四接著層42積層第二絕緣樹脂薄膜18。此外，本實施型態，係前述第一露出部(正極端子部)9，設置於第一金屬層2之另一側之面之中央區域；前述第二露出部(負極端子部)19，設置於第二金屬層12之另一側之面之中央區域(參照圖3、4)。 This embodiment further has the following configuration. That is, on the other side of the first metal layer 2 (the surface on the opposite side of the separator side), the first exposed portion (positive terminal portion) in which the first metal layer 2 is exposed is left. In the aspect of 9, the first insulating resin film 8 is laminated and at the same time, the other side of the second metal layer 12 (the surface on the opposite side of the separator side is the opposite side) to leave the second metal The second insulating resin film 18 is laminated in a state in which the second exposed portion (negative electrode terminal portion) 19 is exposed. In this embodiment, the surface of the other side of the first metal layer 2 (the surface opposite to the surface of the separator) is left to leave the first exposed portion 9 in which the first metal layer 2 is exposed. In this manner, the first insulating resin film 8 is laminated via the third adhesive layer 41, and the other side of the second metal layer 12 (the surface on the opposite side of the separator is the opposite side) is left. The second insulating resin film 18 is laminated via the fourth adhesive layer 42 in the form of the second exposed portion 19 in which the second metal layer is exposed. Further, in the present embodiment, the first exposed portion (positive electrode terminal portion) 9 is provided in a central region of the surface on the other side of the first metal layer 2, and the second exposed portion (negative terminal portion) 19 is provided. A central region of the surface on the other side of the second metal layer 12 (see FIGS. 3 and 4).
上述蓄電裝置1，係第一、二金屬層達成電極(導電部)及外裝材之兩種機能者，因此不用接片即可通電。藉由去除接片，蓄電裝置可實現輕量化及小型化。 In the above-described power storage device 1, since the first and second metal layers achieve the two functions of the electrode (conductive portion) and the exterior material, the power can be supplied without using a tab. By removing the tabs, the power storage device can be reduced in weight and size.
此外，因存在有與正極電導通之正極端子部9以及與負極電導通之負極端子部19，可藉由此等端子部9、19進行通電。 Further, since the positive electrode terminal portion 9 electrically connected to the positive electrode and the negative electrode terminal portion 19 electrically connected to the negative electrode are present, the terminal portions 9 and 19 can be energized by the terminals.
此外，第一金屬層及第二金屬層之中至少一個金屬層，使用金屬箔之至少電解質接觸側(裝置本體部60側)上配置， Further, at least one of the first metal layer and the second metal layer is disposed on at least the electrolyte contact side (the device body portion 60 side) of the metal foil.
i)鍍覆處理部 i) Plating treatment department
ii)包裝材所成之金屬箔配置高耐電解質性之金屬之配置部 Ii) Metal foil with packaging material and high-electrolyte-resistant metal configuration part
iii)導電性金屬氧化物 Iii) Conductive metal oxide
iv)含有導電助劑及接著劑之導電性被覆部 Iv) Conductive coating containing conductive aid and adhesive
之任一者，此等處理部等，因含有耐電解質性而耐腐蝕性優良，可提升前述金屬層之尤其係露出部之耐腐蝕性。因此，該蓄電裝置，難以發生電解質漏出等情形。 In any of these treatment parts, the corrosion resistance is excellent because it contains electrolyte resistance, and the corrosion resistance of the exposed portion of the metal layer is particularly enhanced. Therefore, in this power storage device, it is difficult to cause electrolyte leakage or the like.
此外，藉由在裝置兩側積層絕緣樹脂薄膜8、18，(端子部除外)可足夠確保絕緣性且同時，亦可足夠確保物理強度。因此，本發明之蓄電裝置1，可足夠對應要求具備絕緣性之部位或對有凹凸部位之搭載。 Further, by laminating the insulating resin films 8 and 18 on both sides of the device, (except for the terminal portion), it is possible to sufficiently ensure insulation and at the same time, it is sufficient to secure physical strength. Therefore, the power storage device 1 of the present invention can sufficiently support the mounting of the portion having the insulating property or the uneven portion.
更進一步，因不須傳統之接片線，不會產生蓄電裝置在充放電時之發熱集中於接片線周邊之現象，藉由構成正極部之第一金屬層2及構成負極部之第二金屬層12，可經過蓄電裝置1之兩面之全部擴散發熱，因此可延長蓄電裝置1之壽命(亦即可獲得長壽命之蓄電裝置)。此外， 藉由去除接片線，可減低其製造成本。 Furthermore, since the conventional patch wire is not required, the phenomenon that the heat generation of the power storage device is concentrated on the periphery of the patch wire during charging and discharging does not occur, and the first metal layer 2 constituting the positive electrode portion and the second electrode portion constituting the negative electrode portion are formed. Since the metal layer 12 can be diffused and heated through all of the both surfaces of the electrical storage device 1, the life of the electrical storage device 1 can be extended (it is also possible to obtain a long-life electrical storage device). In addition, By removing the tab line, the manufacturing cost can be reduced.
本發明，係前述第一金屬層2及前述第二金屬層12，使用至少金屬箔之單面上配置， In the present invention, the first metal layer 2 and the second metal layer 12 are disposed on one surface of at least a metal foil.
i)鍍覆處理部 i) Plating treatment department
ii)包裝材所成之金屬箔配置高耐電解質性之金屬之配置部 Ii) Metal foil with packaging material and high-electrolyte-resistant metal configuration part
iii)導電性金屬氧化物 Iii) Conductive metal oxide
iv)含有導電助劑及接著劑之導電性被覆部 Iv) Conductive coating containing conductive aid and adhesive
之任一者。此等i)~iv)之材料，任一者皆含有耐電解質性而耐腐蝕性優良。 Either. Any of the materials of i) to iv) contain electrolyte resistance and are excellent in corrosion resistance.
對於前述金屬層2、12進行詳細說明。首先，構成鍍覆層之金屬(鍍覆材)，雖無特別的限定，但可例舉例如，Ni、Al等。具體的組合，例如，作為金屬箔(2A、12A)/鍍覆層(2B、12B)，可例舉SUS(不鏽鋼)/Ni、Cu/Ni、SUS(不鏽鋼)/Al等。前述金屬箔之厚度為，15μm~155μm為佳。此外，鍍覆層之厚度為，0．5μm~5μm為佳。另外，上述例舉之鍍覆層，Al為正極側(2B)、Cu或SUS為負極側(12B)來使用為佳。 The metal layers 2 and 12 will be described in detail. First, the metal (plating material) constituting the plating layer is not particularly limited, and examples thereof include Ni, Al, and the like. Specific examples of the metal foil (2A, 12A) / plating layer (2B, 12B) include SUS (stainless steel) / Ni, Cu / Ni, SUS (stainless steel) / Al, and the like. The thickness of the metal foil is preferably 15 μm to 155 μm. Further, the thickness of the plating layer is preferably 0.5 μm to 5 μm. Further, in the plating layer exemplified above, it is preferred that Al is used as the positive electrode side (2B), Cu or SUS is the negative electrode side (12B).
前述金屬層2、12，使用「包覆材構成之金屬箔」時，此種包覆材(第1層(2A、12A)/第2層(2B、12B))，可例舉Cu/Ni、Cu/Al、Al/Ni、SUS(不鏽鋼)/Ni、SUS(不鏽鋼)/Al等。此外，Ni/Cu/Ni等之3層亦可。該情形中，包覆材構成之金屬箔之厚度，係15μm~155μm為佳。此時，包覆材之第2層部分為電解質接觸面為佳。亦即，上述例示者，第2層之 金屬比第1層之金屬之耐電解質性優良(耐電解質性較高)。前述第2層(包覆材之電解質接觸側之層)，比第1層之金屬材配置離子化傾向低之金屬材為佳，配置Al等在通常的狀態於表面可形成薄的氧化被膜並形成鈍化金屬材為更佳。離子化傾向低的金屬材之耐蝕性(耐電解質性)高。然而，「離子化傾向高的金屬」但「形成鈍化之金屬」，係比「離子化傾向低且未形成鈍化之金屬」之耐蝕性(耐電解質性)高。 When the metal layer 2 and 12 are formed of a "metal foil composed of a cladding material", such a cladding material (first layer (2A, 12A) / second layer (2B, 12B)) may, for example, be Cu/Ni. Cu/Al, Al/Ni, SUS (stainless steel)/Ni, SUS (stainless steel)/Al, and the like. Further, three layers of Ni/Cu/Ni or the like may be used. In this case, the thickness of the metal foil composed of the covering material is preferably 15 μm to 155 μm. At this time, the second layer portion of the covering material is preferably an electrolyte contact surface. That is, the above example, the second layer The metal is superior in electrolyte resistance to the metal of the first layer (high electrolyte resistance). The second layer (the layer on the electrolyte contact side of the cladding material) is preferably a metal material having a lower ionization tendency than the metal material of the first layer, and a thin oxide film is formed on the surface in the normal state by Al or the like. It is more preferable to form a passivated metal material. A metal material having a low ionization tendency has high corrosion resistance (electrolyte resistance). However, the "metal having a high ionization tendency" but "forming a passivated metal" is higher in corrosion resistance (electrolyte resistance) than "a metal having a low ionization tendency and not forming a passivation".
前述金屬層2、12，使用「積層導電性金屬氧化物之金屬箔」時，雖無特別限定，金屬箔2A、12A，可使用例如，Al、Cu、Ni、SUS、Ti等，導電性金屬氧化物2B、12B，可例舉例如，SnO2、TiO2、ZnO等。前述導電性金屬氧化物層，係以厚度0．1μm~1μm於金屬箔2A、12A塗工為佳。此外，金屬箔之厚度，係15μm~155μm為佳。 In the metal layers 2 and 12, the metal foil of the laminated conductive metal oxide is not particularly limited, and the metal foils 2A and 12A may be, for example, Al, Cu, Ni, SUS, or Ti, or a conductive metal. Examples of the oxides 2B and 12B include SnO 2 , TiO 2 , ZnO, and the like. The conductive metal oxide layer is preferably applied to the metal foils 2A and 12A with a thickness of 0.1 μm to 1 μm. Further, the thickness of the metal foil is preferably 15 μm to 155 μm.
前述金屬層2、12，使用「含有導電助劑及接著劑之導電性被覆層」時，金屬箔2A、12A，雖無特別限定，可使用例如，Al、Cu、Ni、SUS、Ti等，導電助劑，並無特別限定，可例舉例如，CB(碳黑)、CNT(奈米碳管)等。此外，接著劑(黏著劑)，並無特別限定，可例舉例如，PVDF(聚偏二氟乙烯)、SBR(丁苯橡膠)、CMC(羧甲基纖維素納鹽)、PAN(聚丙烯腈)、直鏈型多醣類等。前述導電助劑及接著劑，通常為，個別混合，藉由有機溶劑漿狀化後，藉由凹版法等於金屬箔塗工後，可藉由乾燥形成。前述導電性被覆層之厚度，係設定在0．1μm~20μm為佳。另外，使用導電助劑及接著劑時，因活性物質或電極之密著性夠高，亦可不設置前述黏著劑層7、17。 In the case of using the "conductive coating layer containing a conductive auxiliary agent and an adhesive agent" in the metal layers 2 and 12, the metal foils 2A and 12A are not particularly limited, and for example, Al, Cu, Ni, SUS, Ti, or the like can be used. The conductive auxiliary agent is not particularly limited, and examples thereof include CB (carbon black) and CNT (carbon nanotube). Further, the adhesive (adhesive) is not particularly limited, and examples thereof include PVDF (polyvinylidene fluoride), SBR (styrene-butadiene rubber), CMC (carboxymethylcellulose nano-salt), and PAN (polypropylene). Nitrile), linear polysaccharides, and the like. The conductive auxiliary agent and the adhesive agent are usually mixed separately, and after being slurried by an organic solvent, they are formed by drying after the gravure method is equal to the metal foil coating. The thickness of the conductive coating layer is preferably set to 0.1 μm to 20 μm. Further, when the conductive auxiliary agent and the adhesive are used, the adhesiveness of the active material or the electrode is sufficiently high, and the adhesive layers 7 and 17 may not be provided.
前述正極活性物質層3，雖無特別限定，但可例如，PVDF(聚偏二氟乙烯)、SBR(丁苯橡膠)、CMC(羧甲基纖維素納鹽)、PAN(聚丙烯腈)等之黏著劑中，添加鹽類(例如，鈷酸鋰、鎳酸鋰、磷酸鐵鋰、錳酸鋰等)之混合組成物等所形成。前述正極活性物質層3之厚度，係設定於2μm~300μm為佳。 The positive electrode active material layer 3 is not particularly limited, and may, for example, be PVDF (polyvinylidene fluoride), SBR (styrene-butadiene rubber), CMC (carboxymethylcellulose nano-salt), PAN (polyacrylonitrile), or the like. The adhesive is formed by adding a mixed composition of a salt (for example, lithium cobaltate, lithium nickelate, lithium iron phosphate, lithium manganate, or the like). The thickness of the positive electrode active material layer 3 is preferably set to 2 μm to 300 μm.
前述正極活性物質層3，亦可進一步含有碳黑、CNT(奈米碳管)等之導電補助劑。 The positive electrode active material layer 3 may further contain a conductive auxiliary agent such as carbon black or CNT (carbon nanotube).
前述黏著劑層7，雖無特別的限定，但可例舉例如，PVDF、SBR、CMC、PAN等所形成之層，例如，可藉由塗佈於第一金屬層2之前述一側之面(隔板21側之面)形成。 The pressure-sensitive adhesive layer 7 is not particularly limited, and may, for example, be a layer formed of PVDF, SBR, CMC, PAN or the like, and may be applied to the surface of the first metal layer 2, for example. (the surface on the side of the separator 21) is formed.
前述黏著劑層7，為使第一金屬層2與正極活性物質層3間之導電性提升，亦可進一步添加碳黑、CNT(奈米碳管)等之導電補助劑。 In order to improve the conductivity between the first metal layer 2 and the positive electrode active material layer 3, the pressure-sensitive adhesive layer 7 may further contain a conductive auxiliary agent such as carbon black or CNT (carbon nanotube).
前述黏著劑層7之厚度，係設定於0．2μm~10μm為佳。使其在10μm以下，可極力抑制黏著劑自身增大蓄電裝置1之內部電阻。 The thickness of the adhesive layer 7 is preferably set to 0.2 μm to 10 μm. When it is 10 μm or less, the adhesive itself can be suppressed as much as possible to increase the internal resistance of the electrical storage device 1.
前述黏著劑層7，雖可不設置，但為使第一金屬層2與正極活性物質層3之接著性提升，設置於第一金屬層2與正極活性物質層3之間為佳。 Although the adhesive layer 7 is not provided, it is preferable to provide the adhesion between the first metal layer 2 and the positive electrode active material layer 3 in order to improve the adhesion between the first metal layer 2 and the positive electrode active material layer 3.
前述第一周緣接著劑6，並無特別限定，藉由2液硬化型烯烴系接著劑所形成之層為佳。使用2液硬化型烯烴系接著劑時，可充分防止因電解質膨潤使接著性降低。前述第一周緣接著劑層6之厚度，係設定 於0．5μm~5μm為佳。 The first peripheral adhesive agent 6 is not particularly limited, and a layer formed of a two-liquid hardening type olefin-based adhesive is preferred. When a two-liquid hardening type olefin-based adhesive is used, it is possible to sufficiently prevent the adhesion from being lowered by the electrolyte swelling. The thickness of the first peripheral adhesive layer 6 is set It is preferably from 0.5 μm to 5 μm.
前述負極活性物質層13，雖無特別限定，但可例如，PVDF、SBR、CMC、PAN等之黏著劑中，添加添加物(例如，黑鉛、鈦酸鋰、Si系合金、錫系合金等)之混合組成物等所形成。前述負極活性物質層13之厚度，係設定於1μm~300μm為佳。 Although the negative electrode active material layer 13 is not particularly limited, for example, an additive such as black lead, lithium titanate, Si-based alloy, or tin-based alloy may be added to an adhesive such as PVDF, SBR, CMC or PAN. ) a mixed composition or the like is formed. The thickness of the negative electrode active material layer 13 is preferably set to 1 μm to 300 μm.
前述負極活性物質層13，亦可進一步含有碳黑、CNT(奈米碳管)等之導電補助劑。 The negative electrode active material layer 13 may further contain a conductive auxiliary agent such as carbon black or CNT (carbon nanotube).
前述黏著劑層17，雖無特別限定，但可例舉例如，PVDF(聚偏二氟乙烯)、SBR(丁苯橡膠)、CMC(羧甲基纖維素納鹽等)、PAN(聚丙烯腈)等所形成之層，例如，可藉由塗佈於第二金屬層12之前述一側之面(隔板側之面)形成。 The pressure-sensitive adhesive layer 17 is not particularly limited, and examples thereof include PVDF (polyvinylidene fluoride), SBR (styrene-butadiene rubber), CMC (carboxymethylcellulose nano-salt, etc.), and PAN (polyacrylonitrile). The layer formed by, for example, may be formed by being applied to the surface of the second metal layer 12 on the side (the surface on the separator side).
前述黏著劑層17，為使第二金屬層12與負極活性物質13間之導電性提升，亦可進一步添加碳黑、CNT(奈米碳管)等之導電補助劑。 In order to improve the conductivity between the second metal layer 12 and the negative electrode active material 13, the pressure-sensitive adhesive layer 17 may further contain a conductive auxiliary agent such as carbon black or CNT (carbon nanotube).
前述黏著劑層17之厚度，係設定於0．2μm~10μm為佳。使其在10μm以下，可極力抑制黏著劑自身增大蓄電裝置1之內部電阻。 The thickness of the adhesive layer 17 is preferably set to 0.2 μm to 10 μm. When it is 10 μm or less, the adhesive itself can be suppressed as much as possible to increase the internal resistance of the electrical storage device 1.
前述黏著劑層17，雖可不設置，但為使第二金屬層12與負極活性物質層13之接著性提升，設置於第二金屬層12與負極活性物質層13之間為佳。 The adhesive layer 17 may be omitted, but it is preferably provided between the second metal layer 12 and the negative electrode active material layer 13 in order to improve the adhesion between the second metal layer 12 and the negative electrode active material layer 13.
前述第二周緣接著劑層16，並無特別限定，藉由2液硬化型烯烴系接著劑所形成之層為佳。使用2液硬化型烯烴系接著劑時，可充 分防止因電解質膨潤使接著性降低。前述第二周緣接著劑層16之厚度，係設定於0．5μm~5μm為佳。 The second peripheral adhesive layer 16 is not particularly limited, and a layer formed of a two-liquid-curable olefin-based adhesive is preferred. When using a two-liquid hardening type olefin-based adhesive, it can be charged It is prevented from being lowered by the swelling of the electrolyte. The thickness of the second peripheral adhesive layer 16 is preferably set to 0.5 μm to 5 μm.
上述實施型態，前述周緣密封層(含有熱可塑性樹脂之周緣密封層)31，係第一金屬層2之一側之面之周緣部積層之第一熱可塑性樹脂層4，與第二金屬層12之一側之面之周緣部積層之第二熱可塑性樹脂層14重合，藉由熱來熔接形成者。前述第一熱可塑性樹脂層4，係熱可塑性樹脂未延伸薄膜所形成為佳。此外，前述第二熱可塑性樹脂層14，係熱可塑性樹脂未延伸薄膜所形成為佳。 In the above embodiment, the peripheral sealing layer (peripheral sealing layer containing a thermoplastic resin) 31 is a first thermoplastic resin layer 4 laminated on the peripheral portion of the surface on one side of the first metal layer 2, and the second metal layer. The second thermoplastic resin layer 14 which is laminated on the peripheral portion of the surface on one side of 12 is superposed, and is welded by heat. The first thermoplastic resin layer 4 is preferably formed of a thermoplastic resin unstretched film. Further, it is preferable that the second thermoplastic resin layer 14 is formed of a thermoplastic resin unstretched film.
前述熱可塑性樹脂未延伸薄膜4、14，並無特別限定，由聚乙烯、聚丙烯、烯烴系共聚合物、此等之酸變性物及離子聚合物所成群中選擇至少1種之熱可塑性樹脂構成之未延伸薄膜之構成為佳。 The thermoplastic resin unstretched films 4 and 14 are not particularly limited, and at least one selected from the group consisting of polyethylene, polypropylene, olefin-based copolymers, acid denatured materials, and ionic polymers is selected. The composition of the unstretched film composed of a resin is preferred.
前述熱可塑性樹脂未延伸薄膜4、14之厚度，個別地，係設定於20μm~150μm為佳。 The thickness of the thermoplastic resin unstretched films 4 and 14 is preferably set to be in the range of 20 μm to 150 μm.
前述隔板21、63，雖無特別限定，但可例舉例如， The separators 21 and 63 are not particularly limited, and examples thereof include, for example,
‧聚乙烯製隔板 ‧ Polyethylene separator
‧聚丙烯製隔板 ‧Polypropylene separator
‧聚乙烯薄膜及聚丙烯薄膜所構成之複層薄膜所形成之隔膜 ‧Separator formed by multi-layer film composed of polyethylene film and polypropylene film
‧塗佈上述之任一者陶瓷等之耐熱無機物之濕式或乾式之多孔質薄膜所構成之隔板等。 ‧ A separator made of a wet or dry porous film coated with a heat-resistant inorganic material such as ceramics.
前述隔板21、63之厚度，係設定於5μm~50μm為佳。 The thickness of the separators 21 and 63 is preferably set to 5 μm to 50 μm.
前述電解質5、15，並無特別限定，使用含有碳酸乙烯酯、 碳酸丙烯酯、碳酸二甲酯、碳酸甲乙酯、碳酸二乙酯、及乙二醇二甲醚所成群中選擇至少2種之電解質，與鋰鹽之混合非水系電解質為佳。前述鋰鹽，雖無特別限定，但可例舉例如，六氟磷酸鋰、四氟硼酸鋰等。前述電解質5、15，係前述混合非水系電解質亦可使用與PVDF、PEO(聚環氧乙烷)等凝膠化之物。 The electrolytes 5 and 15 are not particularly limited, and those containing ethylene carbonate are used. Among the propylene carbonate, dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate, and ethylene glycol dimethyl ether, at least two electrolytes are selected, and a nonaqueous electrolyte is preferably mixed with the lithium salt. The lithium salt is not particularly limited, and examples thereof include lithium hexafluorophosphate and lithium tetrafluoroborate. The electrolytes 5 and 15 may be gelled with PVDF or PEO (polyethylene oxide) or the like as the mixed nonaqueous electrolyte.
前述隔板21及前述電解質5、15，因前述第一金屬層2及前述第二金屬層12間之空間內之周圍以周緣密封層31等包圍，內部呈密封之密閉狀態(參照圖4、5)，可防止電解質之漏出。 The separator 21 and the electrolytes 5 and 15 are surrounded by a peripheral seal layer 31 or the like in a space between the first metal layer 2 and the second metal layer 12, and the inside thereof is sealed and sealed (see FIG. 4, 5) Prevent leakage of electrolyte.
前述第一絕緣樹脂薄膜8及第二絕緣樹脂薄膜18，並無特別限定，使用延伸聚醯胺薄膜(延伸尼龍薄膜等)或延伸聚酯薄膜為佳。其中，二軸延伸聚醯胺薄膜(二軸延伸尼龍薄膜等)、二軸延伸聚對苯二甲酸丁二酯(PBT)薄膜、二軸延伸聚對苯二甲酸乙二酯(PET)薄膜或二軸延伸聚萘二甲酸乙二酯(PEN)薄膜為特佳。另外，前述第一絕緣樹脂薄膜8及第二絕緣樹脂薄膜18，任一者皆可以單層形成，或者，例如亦可以延伸聚酯薄膜/延伸聚醯胺薄膜所構成之複層(延伸PET薄膜/延伸尼龍薄膜所構成之複層等)形成。 The first insulating resin film 8 and the second insulating resin film 18 are not particularly limited, and it is preferable to use an extended polyamide film (such as a stretched nylon film) or an extended polyester film. Among them, a biaxially stretched polyimide film (a biaxially stretched nylon film, etc.), a biaxially stretched polybutylene terephthalate (PBT) film, a biaxially oriented polyethylene terephthalate (PET) film or A biaxially extended polyethylene naphthalate (PEN) film is particularly preferred. In addition, any of the first insulating resin film 8 and the second insulating resin film 18 may be formed in a single layer, or, for example, a multi-layer (extended PET film) composed of a polyester film/extended polyamide film may be extended. / formed by a layer of a stretched nylon film, etc.).
前述第一絕緣樹脂薄膜8，一部分設有為確保第一金屬露出部9之開口部8X(參照圖4、5)。上述實施型態，雖開口部8X係設置於前述第一絕緣樹脂薄膜8之中央部，但並無特別限定於此種位置。前述開口部8X之平面視形狀亦無限定於矩形。 The first insulating resin film 8 is partially provided with an opening 8X for securing the first metal exposed portion 9 (see FIGS. 4 and 5). In the above embodiment, the opening portion 8X is provided in the central portion of the first insulating resin film 8, but is not particularly limited to such a position. The planar shape of the opening portion 8X is not limited to a rectangular shape.
相同地，前述第二絕緣樹脂薄膜18，一部分設有為確保第二金屬露出部19之開口部18X(參照圖4、5)。上述實施型態，雖開 口部18X係設置於前述第二絕緣樹脂薄膜18之中央部，但並無特別限定於此種位置。前述開口部18X之平面視形狀亦無限定於矩形。 Similarly, the second insulating resin film 18 is partially provided with an opening 18X for securing the second metal exposed portion 19 (see FIGS. 4 and 5). The above implementation form, although open The mouth portion 18X is provided in the central portion of the second insulating resin film 18, but is not particularly limited to such a position. The planar shape of the opening portion 18X is not limited to a rectangular shape.
前述第一絕緣樹脂薄膜8之厚度及前述第二絕緣樹脂薄膜18之厚度，係任一者皆設定於0．02mm~0．1mm為佳。 The thickness of the first insulating resin film 8 and the thickness of the second insulating resin film 18 are preferably set to 0.02 mm to 0.1 mm.
設置前述第三接著劑層41、前述第四接著劑層42之情形中，此等接著劑41、42，並無特別限定，使用聚酯胺基甲酸酯系接著劑及聚醚胺基甲酸酯系接著劑所成群中選擇至少1種之接著劑為佳。前述第三接著劑層41之厚度、前述第四接著劑層42之厚度，係任一者皆設定於0．5μm~5μm為佳。在前述第一金屬箔層2之另一側之面(與隔板側相反側之面)塗佈上述第三接著劑41後，貼合第一絕緣樹脂薄膜8接著兩者一體化即可。此外，在前述第二金屬箔層12之另一側之面(與隔板側相反側之面)塗佈上述第四接著劑42後，貼合第二絕緣樹脂薄膜18接著兩者一體化即可。 In the case where the third adhesive layer 41 and the fourth adhesive layer 42 are provided, the adhesives 41 and 42 are not particularly limited, and a polyester urethane-based adhesive and a polyether amine-based adhesive are used. It is preferred to select at least one of the groups of the acid ester-based adhesives. The thickness of the third adhesive layer 41 and the thickness of the fourth adhesive layer 42 are preferably set to 0.5 μm to 5 μm. After the third adhesive 41 is applied to the other surface of the first metal foil layer 2 (the surface opposite to the separator side), the first insulating resin film 8 is bonded and the two are integrated. Further, after the fourth adhesive 42 is applied to the other surface of the second metal foil layer 12 (the surface opposite to the separator side), the second insulating resin film 18 is bonded, and then the two are integrated. can.
本發明中，金屬層2、12，使用施加鍍覆處理之金屬箔、包覆材構成之金屬箔時，前述第一金屬箔中至少在配置前述隔板側之面形成化成皮膜為佳。此外，相同地，前述第二金屬箔中至少在配置前述隔板側之面形成化成皮膜為佳。前述化成皮膜，係藉由在金屬箔之表面施加化成處理而形成之皮膜，藉由施以如此之化成處理，可充分防止內容物(電解質等)所引起之金屬箔表面之腐蝕。例如，藉由進行下述處理，對金屬箔施以化成處理。亦即，例如可藉由在進行脫脂處理後之金屬箔之表面，塗工下述1)~3)之中任一之水溶液後使其乾燥，以實施化成處理。 In the present invention, when the metal foil to which the plating treatment is applied and the metal foil formed of the cladding material is used, it is preferable that at least the surface of the first metal foil is formed on the surface on which the separator is disposed. Further, in the same manner, it is preferable that at least the surface of the second metal foil is formed on the surface on which the separator side is disposed. The chemical conversion film is formed by applying a chemical conversion treatment to the surface of the metal foil, and by such a chemical conversion treatment, corrosion of the surface of the metal foil caused by the content (electrolyte or the like) can be sufficiently prevented. For example, the metal foil is subjected to a chemical conversion treatment by the following treatment. In other words, for example, an aqueous solution of any one of the following 1) to 3) can be applied to the surface of the metal foil after the degreasing treatment, and then dried to perform a chemical conversion treatment.
1)含有選自磷酸、 鉻酸、氟化物之金屬鹽及氟化物之非金屬鹽所構成群中至少1種之化合物的混合物之水溶液 1) containing a compound selected from phosphoric acid An aqueous solution of a mixture of at least one compound of a group consisting of a metal salt of chromic acid, a fluoride, and a non-metal salt of a fluoride
2)含有選自磷酸、丙烯酸系樹脂、殼聚醣衍生物樹脂(Chitosan derivative resins)及苯酚系樹脂所成群中至少1種之樹脂，與選自鉻酸及鉻(III)鹽所成群中至少1種之化合物的混合物之水溶液 2) a resin containing at least one selected from the group consisting of phosphoric acid, acrylic resin, chitosan derivative resins, and phenol resin, and a group selected from the group consisting of chromic acid and chromium (III) salt An aqueous solution of a mixture of at least one of the compounds
3)含有選自磷酸、丙烯酸系樹脂、殼聚醣衍生物樹脂及苯酚系樹脂所成群中至少1種之樹脂，與選自鉻酸及鉻(III)鹽所成群中至少1種之化合物，與選自氟化物之金屬鹽及氟化物之非金屬鹽所成群中至少1種之化合物的混合物之水溶液。 3) a resin containing at least one selected from the group consisting of phosphoric acid, an acrylic resin, a chitosan derivative resin, and a phenol resin, and at least one selected from the group consisting of chromic acid and chromium (III) salt. An aqueous solution of a compound, a mixture of at least one compound selected from the group consisting of a metal salt of a fluoride and a non-metal salt of a fluoride.
前述化成皮膜，鉻附著量(每單面)0．1mg/m2~50mg/m2為佳，2mg/m2~20mg/m2為特佳。 In the chemical conversion film, the amount of chromium adhesion (per side) is preferably 0.1 mg/m 2 to 50 mg/m 2 , and 2 mg/m 2 to 20 mg/m 2 is particularly preferable.
接著，說明本發明之具體實施例，惟本發明並非限定為此等實施例者。 Next, specific embodiments of the present invention will be described, but the present invention is not limited to the embodiments.
<實施例1> <Example 1>
厚度40μm之施予鎳鍍覆(鍍覆厚度1μm)之鋁箔之兩面上，塗佈含有聚丙烯酸、磷酸、鉻及氟化合物的化成處理液，以150℃進行乾 燥，使鉻附著量為3mg/m2，得到第一金屬層2。 A chemical conversion treatment liquid containing polyacrylic acid, phosphoric acid, chromium, and a fluorine compound was applied to both surfaces of an aluminum foil coated with nickel plating (plating thickness: 1 μm) having a thickness of 40 μm, and dried at 150 ° C to have a chromium adhesion amount of 3 mg/ m 2 , a first metal layer 2 is obtained.
接著，在前述第一金屬層2之一側之面，塗佈聚酯-胺基甲酸酯系接著劑。於此塗佈時，第一金屬層2之一側之面之中央部藉由遮蔽(貼覆遮蔽膠帶)成為接著劑未塗佈區域。之後，此聚酯-胺基甲酸酯系接著劑塗佈面上貼合厚度25μm二軸延伸聚醯胺薄膜(第一絕緣樹脂薄膜)8。接著，在前述第一金屬層2之另一側之面上，塗佈酸變性聚丙烯系接著劑。於此塗佈時，第一金屬層2之另一側之面之中央部藉由遮蔽(貼覆遮蔽膠帶)成為接著劑未塗佈區域。之後，此酸變性聚丙烯系接著劑塗布面上貼合厚度40μm之未延伸聚丙烯薄膜(第一熱可塑性樹脂層)4，得到積層體。 Next, a polyester-urethane-based adhesive is applied to one side of the first metal layer 2. At the time of this coating, the center part of the surface of the one side of the 1st metal layer 2 turns into the adhesive-uncoated area by masking (coating masking tape). Thereafter, a biaxially stretched polyimide film (first insulating resin film) 8 having a thickness of 25 μm was bonded to the surface of the polyester-urethane-based adhesive. Next, an acid-denatured polypropylene-based adhesive is applied to the other surface of the first metal layer 2. At the time of this coating, the center portion of the other side of the first metal layer 2 is covered (adhered to the masking tape) to form an adhesive uncoated region. Thereafter, an unstretched polypropylene film (first thermoplastic resin layer) 4 having a thickness of 40 μm was bonded to the acid-modified polypropylene-based adhesive application surface to obtain a laminate.
接著，雷射照射前述積層體中第一絕緣樹脂薄膜之接著劑未塗佈區域的周緣用以切斷第一絕緣樹脂薄膜，去除接著劑未塗佈區域之第一絕緣樹脂薄膜，形成正極端子部9。此外，雷射照射前述積層物中第一熱可塑性樹脂層之接著劑未塗佈區域的周緣用以切斷第一熱可塑性樹脂層，去除接著劑未塗佈區域之第一熱可塑性樹脂層，形成正極導電部56，得到平面材之外裝體50(圖1之蓋體55)。 Next, the laser irradiates the periphery of the uncoated region of the first insulating resin film in the laminate to cut the first insulating resin film, and removes the first insulating resin film in the uncoated region of the adhesive to form a positive terminal. Department 9. Further, the laser irradiates the periphery of the uncoated region of the first thermoplastic resin layer in the laminate to cut the first thermoplastic resin layer, and removes the first thermoplastic resin layer in the uncoated region of the adhesive. The positive electrode conductive portion 56 is formed to obtain a planar outer casing 50 (the cover 55 of Fig. 1).
<實施例2> <Example 2>
前述第一金屬層2，除了係使用對於包覆材(鋁-鎳箔)施予與實施例1相同之化成處理所成者以外，其他皆如同實施例1，從而得到平面材之外裝體50(圖1之蓋體55)。 The first metal layer 2 is the same as the first embodiment except that the same chemical treatment as in the first embodiment is applied to the covering material (aluminum-nickel foil), thereby obtaining a planar outer casing. 50 (cover 55 of Figure 1).
<實施例3> <Example 3>
前述第一金屬層2，除了使用與實施例1相同之化成處理後之鋁箔 (第一金屬箔)2A之兩面上，個別藉由塗工積層厚度0．5μm之SnO2層(導電性金屬氧化物)2B所成者以外，其他皆如同實施例1，從而得到平面材之外裝體50(圖1之蓋體55)。 The first metal layer 2 was oxidized by a coating layer of 0.5 μm thick SnO 2 layer on both sides of the aluminum foil (first metal foil) 2A after the same chemical treatment as in Example 1. Other than the one formed by 2B, as in the first embodiment, the outer casing 50 of the flat material (the cover 55 of Fig. 1) was obtained.
<實施例4> <Example 4>
前述第一金屬層2，除了使用與實施例1相同之化成處理後之鋁箔(第一金屬箔)2A之個別兩面上，積層厚度20μm之導電性被覆層2B所成者以外，其他皆如同實施例1，從而得到平面材之外裝體50(圖1之蓋體55)。前述導電性被覆層2B，用乙酸乙酯溶解殼聚醣及碳黑所成之漿料以凹版法塗佈前述鋁箔上後，以150℃乾燥而形成。 The first metal layer 2 is formed by using the conductive coating layer 2B having a thickness of 20 μm on the respective two surfaces of the aluminum foil (first metal foil) 2A after the chemical conversion treatment in the same manner as in the first embodiment. In Example 1, a planar outer casing 50 (the cover 55 of Fig. 1) was obtained. The conductive coating layer 2B was formed by dissolving a slurry of chitosan and carbon black in ethyl acetate by gravure coating of the aluminum foil, followed by drying at 150 ° C.
<比較例1> <Comparative Example 1>
前述第一金屬層，除了直接使用與實施例1相同之化成處理後之鋁箔(第一金屬箔)以外(亦即無積層導電性被覆層)，其他皆如同實施例1，從而得到平面材之外裝體。 The first metal layer is used in the same manner as in the first embodiment except that the aluminum foil (first metal foil) after the chemical conversion treatment is used in the same manner as in the first embodiment (other than the laminated conductive coating layer). Outer body.
基於下述評價法，對於根據上述所得到的各蓄電裝置用外裝材，進行耐電解質性之評估。 Based on the following evaluation method, the evaluation of the electrolyte resistance was performed on the exterior materials for the electrical storage devices obtained as described above.
<耐電解質性評價法> <Electrolyte resistance evaluation method>
將各實施例、比較例分別作成2張矩形狀之外裝體，使露出金屬箔之導電部位於內側(使熱可塑性樹脂層成為內側)，重合2張外裝體後，留下1部位而熱密封周緣之3邊。接著，從未密封部位向內部注入電解液5mL，在空氣進入之狀態下熱密封接合前述未密封部位而完成密封，在此狀態放置後，藉由目視觀察外裝體之正極導電部及負極導電部之腐蝕的有無。 Each of the examples and the comparative examples was formed into two rectangular outer casings, and the conductive portion exposing the metal foil was placed inside (the thermoplastic resin layer was placed inside), and the two outer casings were superposed, and one portion was left. Heat seal the 3 sides of the circumference. Then, 5 mL of the electrolytic solution was injected into the unsealed portion, and the unsealed portion was heat-sealed in a state where air was introduced to complete the sealing. After being placed in this state, the positive electrode conductive portion and the negative electrode of the exterior body were visually observed. The presence or absence of corrosion.
電解液，係使用碳酸乙烯酯(EC)、碳酸二甲酯(DMC)、 碳酸甲乙酯(EMC)以等量體積比調配所成之混合溶劑，將六氟磷酸鋰(LiPF6)溶解成濃度為1莫耳/L之電解質。 The electrolyte solution is prepared by dissolving a mixed solvent of ethylene carbonate (EC), dimethyl carbonate (DMC), and ethyl methyl carbonate (EMC) in an equal volume ratio to dissolve lithium hexafluorophosphate (LiPF 6 ) to a concentration of 1 Moor / L electrolyte.
其結果，本發明之實施例1~4之蓄電裝置用外裝體，未觀察到電解質所導致之金屬層(包含金屬箔)的腐蝕現象，具有優良之耐電解質性。 As a result, in the exterior body for an electrical storage device according to Examples 1 to 4 of the present invention, corrosion of a metal layer (including a metal foil) caused by an electrolyte was not observed, and excellent electrolyte resistance was obtained.
相對於此，比較例1之外裝體，稍微觀察到電解質所導致之金屬層的腐蝕。 On the other hand, in the outer casing of Comparative Example 1, corrosion of the metal layer caused by the electrolyte was slightly observed.
本發明之蓄電裝置，具體例可列舉例如： Specific examples of the power storage device of the present invention include, for example:
‧鋰充電電池(鋰離子電池、鋰聚合物電池等)等之電化學裝置 ‧Electrochemical devices such as lithium rechargeable batteries (lithium ion batteries, lithium polymer batteries, etc.)
‧鋰離子電容器 ‧Lithium ion capacitor
‧雙電層電容器 ‧Electric double layer capacitor
等。 Wait.
本申請案，係伴隨著在2015年4月28日提出申請的日本專利申請案的特願2015-89495號的優先權主張，其揭示內容直接構成本申請案的一部分。 The present application claims the priority of Japanese Patent Application No. 2015-89495, the entire disclosure of which is incorporated herein by reference.
在此所使用的用語及說明，係用以說明本發明的實施形態所使用，但本發明並不限定於此。在本發明所揭示且敘述的特徵事項的任何均等物皆不應被排除，且在本發明所請求的範圍內的各種變形亦應被理解為係可被接受的。 The terms and descriptions used herein are for describing embodiments of the invention, but the invention is not limited thereto. It is to be understood that any equivalents of the features disclosed and described herein are not to be construed as limited.
1‧‧‧蓄電裝置 1‧‧‧Power storage device
2‧‧‧第一金屬層 2‧‧‧First metal layer
2A‧‧‧第一金屬箔 2A‧‧‧First metal foil
2B‧‧‧鍍覆處理部、高耐電解質性之金屬材配置部、導電性金屬氧化物 層、導電性被覆層 2B‧‧‧ plating treatment unit, metal plated part with high electrolyte resistance, conductive metal oxide Layer, conductive coating
4‧‧‧第一熱可塑性樹脂層 4‧‧‧First thermoplastic resin layer
8‧‧‧第一絕緣樹脂薄膜層 8‧‧‧First insulating resin film layer
9‧‧‧第一露出部(正極端子部) 9‧‧‧First exposed part (positive terminal part)
12‧‧‧第二金屬層 12‧‧‧Second metal layer
12A‧‧‧第二金屬箔 12A‧‧‧Second metal foil
12B‧‧‧鍍覆處理部、高耐電解質性之金屬材配置部、導電性金屬氧化物層、導電性被覆層 12B‧‧‧ plating treatment unit, metal material arrangement portion with high electrolyte resistance, conductive metal oxide layer, and conductive coating layer
14‧‧‧第二熱可塑性樹脂層 14‧‧‧Second thermoplastic resin layer
18‧‧‧第二絕緣樹脂薄膜層 18‧‧‧Second insulating resin film layer
19‧‧‧第二露出部(負極端子部) 19‧‧‧Second exposed part (negative terminal part)
50‧‧‧外裝體 50‧‧‧Outer body
54‧‧‧負極導電部 54‧‧‧Negative Conductive Section
56‧‧‧正極導電部 56‧‧‧positive conductive part
60‧‧‧裝置本體部 60‧‧‧ device body
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015089495A JP2016207542A (en) | 2015-04-24 | 2015-04-24 | Exterior body for electricity storage device and electricity storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW201703310A true TW201703310A (en) | 2017-01-16 |
Family
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| TW105112140A TW201703310A (en) | 2015-04-24 | 2016-04-19 | Housing of electricity storage device and electricity storage device including a metal layer that is formed by a metal foil and a thermoplastic resin layer laminated on one side of the metal layer |
Country Status (4)
| Country | Link |
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| JP (1) | JP2016207542A (en) |
| KR (1) | KR20160126870A (en) |
| CN (2) | CN106067520A (en) |
| TW (1) | TW201703310A (en) |
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| JP2016207542A (en) * | 2015-04-24 | 2016-12-08 | 昭和電工パッケージング株式会社 | Exterior body for electricity storage device and electricity storage device |
| KR102256484B1 (en) * | 2017-06-13 | 2021-05-27 | 주식회사 엘지에너지솔루션 | Secondary battery, surface treatment apparatus and method the same |
| WO2019017029A1 (en) * | 2017-07-18 | 2019-01-24 | 株式会社村田製作所 | Secondary battery, battery pack, electric vehicle, electric power storage system, electric tool, and electronic device |
| WO2020066108A1 (en) * | 2018-09-25 | 2020-04-02 | パナソニックＩｐマネジメント株式会社 | Separator and nonaqueous electrolyte secondary battery |
| EP3904405A4 (en) * | 2018-12-28 | 2022-09-21 | Zeon Corporation | ALL SOLID SECONDARY BATTERY ELECTRODE CONDUCTIVE MATERIAL PASTE |
| KR102772416B1 (en) * | 2019-11-19 | 2025-02-25 | 주식회사 엘지에너지솔루션 | The Electrode Assembly And The Method For Thereof |
| CN111129366A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | Terminal of energy storage device and shell of energy storage device |
| CN111129367A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | Energy storage device and assembling method thereof |
| CN111129388A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | An energy storage device and an assembling method of the energy storage device |
| WO2023053322A1 (en) * | 2021-09-30 | 2023-04-06 | Tdk株式会社 | Current collector, electrode for electric storage device, and lithium-ion secondary battery |
| CN116031584A (en) * | 2023-03-27 | 2023-04-28 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
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| JPS55107225A (en) * | 1979-02-09 | 1980-08-16 | Matsushita Electric Industrial Co Ltd | Electric double layer capacitor and method of manufacturing same |
| JP4270599B2 (en) * | 1998-04-02 | 2009-06-03 | 大日本印刷株式会社 | Thin battery |
| JP3615491B2 (en) * | 2001-03-05 | 2005-02-02 | 松下電器産業株式会社 | Non-aqueous electrolyte secondary battery and manufacturing method thereof |
| JP2004031272A (en) * | 2002-06-28 | 2004-01-29 | Nissan Motor Co Ltd | Electrode stack type battery |
| JP2004342643A (en) * | 2003-05-13 | 2004-12-02 | Nec Tokin Corp | Electric double layer capacitor |
| JP4192869B2 (en) | 2004-09-10 | 2008-12-10 | ソニー株式会社 | Thin card battery and manufacturing method thereof |
| JP5558912B2 (en) * | 2010-05-18 | 2014-07-23 | 昭和電工パッケージング株式会社 | Laminated battery pack and laminated outer packaging material for battery pack |
| CN103190015A (en) * | 2010-09-03 | 2013-07-03 | 日本电气株式会社 | Non-aqueous secondary battery and method for manufacturing non-aqueous secondary battery |
| JP2013004563A (en) * | 2011-06-13 | 2013-01-07 | Aisin Seiki Co Ltd | Power storage device, manufacturing method therefor and power storage module |
| JP6459306B2 (en) * | 2013-08-30 | 2019-01-30 | 凸版印刷株式会社 | Exterior materials for lithium-ion batteries |
| CN103633264A (en) * | 2013-11-25 | 2014-03-12 | 昆山永翔光电科技有限公司 | Aluminium-plastic film for lithium battery flexible package and manufacturing method thereof |
| JP6629514B2 (en) * | 2014-05-08 | 2020-01-15 | 昭和電工パッケージング株式会社 | Manufacturing method of laminate exterior material |
| JP2016207542A (en) * | 2015-04-24 | 2016-12-08 | 昭和電工パッケージング株式会社 | Exterior body for electricity storage device and electricity storage device |
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2016
- 2016-04-14 KR KR1020160045472A patent/KR20160126870A/en not_active Withdrawn
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| CN106067520A (en) | 2016-11-02 |
| JP2016207542A (en) | 2016-12-08 |
| CN205960032U (en) | 2017-02-15 |
| KR20160126870A (en) | 2016-11-02 |
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