CN105144423A - Battery packaging material - Google Patents
Battery packaging material Download PDFInfo
- Publication number
- CN105144423A CN105144423A CN201480024239.0A CN201480024239A CN105144423A CN 105144423 A CN105144423 A CN 105144423A CN 201480024239 A CN201480024239 A CN 201480024239A CN 105144423 A CN105144423 A CN 105144423A
- Authority
- CN
- China
- Prior art keywords
- layer
- housing material
- resin
- battery housing
- barrier layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000005022 packaging material Substances 0.000 title claims abstract description 9
- 230000004888 barrier function Effects 0.000 claims abstract description 60
- 229920005989 resin Polymers 0.000 claims abstract description 52
- 239000011347 resin Substances 0.000 claims abstract description 52
- 239000000565 sealant Substances 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 64
- -1 olefin hydrocarbons Chemical class 0.000 claims description 35
- 239000000758 substrate Substances 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 22
- 238000007493 shaping process Methods 0.000 claims description 14
- 229930195733 hydrocarbon Natural products 0.000 claims description 12
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 6
- 229920005672 polyolefin resin Polymers 0.000 claims description 5
- 229920002799 BoPET Polymers 0.000 claims description 2
- 239000005041 Mylar™ Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 239000011888 foil Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 170
- 239000011148 porous material Substances 0.000 description 28
- 239000004743 Polypropylene Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 22
- 229920001971 elastomer Polymers 0.000 description 16
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 15
- 239000005030 aluminium foil Substances 0.000 description 15
- 229920001577 copolymer Polymers 0.000 description 15
- 229910001416 lithium ion Inorganic materials 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- 239000012528 membrane Substances 0.000 description 13
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 13
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 12
- 239000004677 Nylon Substances 0.000 description 12
- 229920001778 nylon Polymers 0.000 description 12
- 229920001155 polypropylene Polymers 0.000 description 12
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000009740 moulding (composite fabrication) Methods 0.000 description 11
- 239000000470 constituent Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 239000004711 α-olefin Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- 239000004411 aluminium Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229920000098 polyolefin Polymers 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 5
- 239000000806 elastomer Substances 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 229920006267 polyester film Polymers 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000010306 acid treatment Methods 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 4
- 238000000137 annealing Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical class O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- QLZJUIZVJLSNDD-UHFFFAOYSA-N 2-(2-methylidenebutanoyloxy)ethyl 2-methylidenebutanoate Chemical compound CCC(=C)C(=O)OCCOC(=O)C(=C)CC QLZJUIZVJLSNDD-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 2
- 229920006223 adhesive resin Polymers 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910001593 boehmite Inorganic materials 0.000 description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006015 heat resistant resin Polymers 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000005001 laminate film Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920005606 polypropylene copolymer Polymers 0.000 description 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 2
- RRKODOZNUZCUBN-CCAGOZQPSA-N (1z,3z)-cycloocta-1,3-diene Chemical compound C1CC\C=C/C=C\C1 RRKODOZNUZCUBN-CCAGOZQPSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical class CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- RYPKRALMXUUNKS-UHFFFAOYSA-N 2-Hexene Natural products CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 1
- YHQXBTXEYZIYOV-UHFFFAOYSA-N 3-methylbut-1-ene Chemical compound CC(C)C=C YHQXBTXEYZIYOV-UHFFFAOYSA-N 0.000 description 1
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 description 1
- PMZBHPUNQNKBOA-UHFFFAOYSA-N 5-methylbenzene-1,3-dicarboxylic acid Chemical compound CC1=CC(C(O)=O)=CC(C(O)=O)=C1 PMZBHPUNQNKBOA-UHFFFAOYSA-N 0.000 description 1
- 229920005789 ACRONAL® acrylic binder Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 101000576320 Homo sapiens Max-binding protein MNT Proteins 0.000 description 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920006121 Polyxylylene adipamide Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001399 aluminium compounds Chemical class 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- FYIBGDKNYYMMAG-UHFFFAOYSA-N ethane-1,2-diol;terephthalic acid Chemical compound OCCO.OC(=O)C1=CC=C(C(O)=O)C=C1 FYIBGDKNYYMMAG-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006213 ethylene-alphaolefin copolymer Polymers 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 229920006225 ethylene-methyl acrylate Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- DPUXQWOMYBMHRN-UHFFFAOYSA-N hexa-2,3-diene Chemical compound CCC=C=CC DPUXQWOMYBMHRN-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- OJURWUUOVGOHJZ-UHFFFAOYSA-N methyl 2-[(2-acetyloxyphenyl)methyl-[2-[(2-acetyloxyphenyl)methyl-(2-methoxy-2-oxoethyl)amino]ethyl]amino]acetate Chemical compound C=1C=CC=C(OC(C)=O)C=1CN(CC(=O)OC)CCN(CC(=O)OC)CC1=CC=CC=C1OC(C)=O OJURWUUOVGOHJZ-UHFFFAOYSA-N 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical group CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 229920005653 propylene-ethylene copolymer Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- H01M50/116—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
- H01M50/124—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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
- H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only 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
- H01M50/136—Flexibility or foldability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a battery packaging material which is free from the formation of a pinhole in a barrier layer that is formed of a metal foil. [Solution] A battery packaging material is obtained by sequentially laminating a barrier layer and a sealant layer on one surface of a base layer, and wherein the sealant layer is composed of a metal bonding layer, an intermediate layer that is formed of a soft resin, and a thermal fusion bonding layer.
Description
Technical field
The present invention relates to the housing material of the battery such as lithium ion battery, lithium polymer battery class, particularly, relate to deep draw (deepdrawing) mouldability excellent, suppress pore (pinhole) to produce be shaped to possible battery housing material.
Background technology
As developing the housing material used in the thin battery and capacitor etc. that attract people's attention in recent years, by substrate layer, barrier layer, adhesive linkage, sealant are laminated successively, a lot of housing materials that are that obtain are known.Such as, in housing material, substrate layer is the biaxial stretch-formed rete of thermal endurance, barrier layer is aluminium foil, sealant is formed by acrylic resin, there is between barrier layer and sealant the adhesive linkage formed by the sour modified polypropylene resin with modifications such as maleic anhydrides, and give electrolyte resistance characteristic, solvent resistance (patent documentation 1) by this sour modified polypropylene resin.
In the past, by battery packaging material by shaping manufacture packing containers such as drawing and forming, deep draw are shaping time, the generation in visible pore, crack etc. sometimes, proposes many in order to suppress their scheme.Such as, by the physical property of exterior material is carried out specific suppress crack, pore time, propose following packing material: it is possess the skin, metal foil layer and the packing material of internal layer that formed by thermoplastic resin film that are formed by heat-resistant resin film, as above-mentioned outer field heat-resistant resin, employ the material (patent documentation 2) that impact strength is more than 30000J/m.
In addition, propose to obtain excellent housing material, the utilization of elastomer resin is effective.Such as, with by preventing the crack of heat sealability film from producing, fracture provides electrolyte resistance excellent, for the purpose of the lithium battery exterior material that whiting is suppressed simultaneously, propose and comprise aluminium foil layer, adhesive resin layer, the lamilated body that sealant is laminated successively and obtain, and adhesive resin layer contains the lithium battery exterior material (patent documentation 3) of modified polyolefin resin and thermoplastic elastomer (TPE), with by adding the fusing point propylene class elastomer resin high than 150 DEG C in the polyolefin layer of sealant, adhesive strength after making heat sealing is stable, the electrochemical cell (cell) that stripping between polyolefin layer is prevented packaging material (patent documentation 4).
In addition, as when using lamilated body to carry out cold forming, in soft alloy foil, do not produce pore etc. and keep excellent gas barrier, also the lithium ion battery exterior material of the leafing between soft alloy foil and sealant can not be produced when having packed the content containing strong permeable mass, propose and be coated with biaxial stretch-formed nylon membrane by vinylidene chloride, the biaxial stretch-formed nylon membrane of aluminium-vapour deposition, the biaxial stretch-formed nylon membrane of inorganic oxide evaporation, on the face of the side of the base material film that any film in multi-layer co-extruded biaxial stretch-formed nylon membrane is formed, laminated following layers and the battery exterior material obtained: binder course (anchorcoat) side is through the soft alloy foil of boehmite process, the binder course formed by isocyanate compound, the adhering resin layer formed by the hybrid resin of metallocene class straight linear polyethylene resin and ldpe resin, the sealant (patent documentation 5) formed by TPO multilayer film.
As illustrated in above, propose much about by the generation of pore of the aluminium lamination produced during battery housing material forming battery container, the solution of the generation, leafing etc. in the crack of hot sealing layer.
prior art document
patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2001-102011 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2005-22336 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2010-102935 publication
Patent documentation 4: Japanese Unexamined Patent Publication 2012-79481 publication
Patent documentation 5: Japanese Unexamined Patent Publication 2004-311227 publication
Patent documentation 6: Japanese Unexamined Patent Publication 2008-277274 publication
Patent documentation 7: Japanese Unexamined Patent Publication 2008-162653 publication.
Summary of the invention
the problem that invention will solve
The object of the invention is to, provide deep draw mouldability excellent, suppress pore to produce be shaped to possible lithium ion battery outer cover material.That is, the object of the invention is to, suppress the pore on the barrier layer produced when the shaping lithium ion battery outer cover material of deep draw.In addition, the object of the invention is to, by the housing material providing moisture block good, can the stable performance of long term maintenance, and not dangerous lithium ion battery is provided.
in order to solve the means of problem
The present invention makes to provide following housing material to become possibility: when the container of lithium ion battery is held in shaping manufacture, do not produce the housing material in pore, crack in container.Moisture block is one of important performance required by the housing material of lithium ion battery, if produce pore, crack, then moisture block step-down, moisture will penetrate into inside battery, may react with the electrolyte of inside and produce hydrofluoric acid.If produce hydrofluoric acid, press liter in battery, involution portion may peel off, and in addition, if hydrofluoric acid permeate sealant and metal adhesion layer and arrive barrier layer, then may corrode the surface on this barrier layer and the performance of battery is reduced.
The present inventor finds out, the problem that the performance of these lithium ion batteries reduces is, if to holding the container of lithium ion battery from housing material by the shaping deep draw carrying out 4 ~ 10mm degree of deep draw, then produce pore at barrier layer (aluminium), as essential factor more specifically, find that, along with form depth deepens, sealant will extend locally, therefore, the aluminium on barrier layer produces pore owing to cannot catch up with the elongation of this locality; By attentively making great efforts the research and development in its solution, thus reach the present invention.
Namely, find in the present invention, it is the laminate structures comprising metal adhesion layer, the intermediate layer formed by soft property resin, hot welding layer by making the sealant comprised in the battery housing material of substrate layer/barrier layer/sealant, the elongation of the locality of sealant can be suppressed, thus the pore on barrier layer can be suppressed to produce, to such an extent as to complete the present invention.
1st invention is battery housing material, and it is the one side at substrate layer successively laminated barrier layer, sealant and the packaging material obtained, and it is characterized in that, sealing layer comprises metal adhesion layer, with soft property resin be main component intermediate layer and hot welding layer.
2nd invention, is characterized in that, in the 1st invention, the soft property resin in described intermediate layer is olefin hydrocarbons thermoplasticity elastic body.
3rd invention, is characterized in that, in the 2nd invention, described metal adhesion layer take acid-modified polyolefin resin as main component.
4th invention, is characterized in that, in the 1st invention, the soft property resin in described intermediate layer be have deep draw shaping time the soft property resin of even autgmentability.
5th invention, is characterized in that, in the 1st invention, the resinous principle comprised in described intermediate layer is only the olefin hydrocarbons thermoplasticity elastic body for soft property resin.
6th invention, is characterized in that, in the 1st invention, described metal adhesion layer take acid-modified polyolefin resin as main component.
7th invention, is characterized in that, in the 1st invention, described substrate layer comprise with mylar be main component biaxial stretch-formed rete and/or take polyamide as the biaxial stretch-formed rete of main component.
8th invention, is characterized in that, from the 1 to the 7 any one invention in, be used as the battery case that deep draw is shaping.
invention effect
In deep draw is shaping, there is such problem: if carry out the deep draw of about 6mm, then will produce pore at barrier layer (aluminium lamination).As its essential factor, think that, along with form depth deepens, sealant will extend locally, therefore, barrier layer produces pore owing to catching up with.In the past, in order to improve mouldability, existing and making elastomer contain the method (patent documentation 3,6,7) in sealant.Can confirm in the present invention, when forming sealant, by using soft property resin, preferred alkenes class flexibility resin in intermediate layer, mouldability will improve, and be difficult to produce pore at barrier layer (aluminium foil).This is due to following reason: the sealant of conventional art extends locally when shaping, in contrast, uses the soft property resin with even autgmentability in the present invention, and therefore the extension of locality becomes and is difficult to produce.In the past, intermediate layer and hot welding layer used identical PP (random PP), and interpolation flexibility is material modified, and by using the soft property resin with even autgmentability to solve in the present invention.
Namely, confirm in the present invention, be the laminate structures of hot welding layer/intermediate layer/metal adhesion layer by making the sealant comprised in the battery housing material of outermost layer/barrier layer/sealant, and soft property resin, preferred alkenes class soft property resin is used in intermediate layer, mouldability will improve, and be difficult to produce pore at barrier layer (aluminium lamination).This is due to following reason: the sealant of conventional art extends locally when shaping, and in contrast, by using soft property resin, the preferred alkenes analog thermoplastic elastomer with even autgmentability, the extension of locality becomes and is difficult to produce.
Accompanying drawing explanation
Fig. 1 is the schematic section of housing material of the present invention.From a side surface to opposite side, substrate layer 1, barrier layer 2, sealant 3 are shown.In addition, illustrate that the laminate structures of sealant 3 comprises hot welding layer 33, intermediate layer 32, metal adhesion layer 31.
Embodiment
The present invention relates to battery housing material, it is the one side at substrate layer successively laminated barrier layer, sealant and the packaging material obtained, sealing layer comprises metal adhesion layer, the intermediate layer formed by soft property resin and hot welding layer, can suppress to produce pore in barrier layer in deep draw is shaping.
Finding can by carrying out specific improvement in the phenomenon of the metal level generation pores such as the aluminium forming barrier layer to the material of sealant, the present invention is based on the above-mentioned fact, from side, barrier layer, metal adhesion layer, the intermediate layer formed by soft property resin (preferred alkenes analog thermoplastic elastomer), hot welding layer is set gradually in sealant, not only thermal welding characteristic is good, after thermal welding the generation of the generation in the crack of sealant, the stripping from barrier layer etc. suppressed in also excellent.
Be described from the sealant of the characteristic point as battery housing material of the present invention.
[sealant]
Sealant of the present invention, by comprising metal adhesion layer 31, the intermediate layer 32 formed by soft resin and hot welding layer 33, not only can make the mouldability of housing material improve, suppress to produce pore on barrier layer, and can keep good heat sealability.
As sealant of the present invention, tensile modulus of elasticity is preferably below 300MPa, more preferably below 250MPa.In addition, the difference of upper yield point stress and lower yield point stress is preferably lower than 3.0MPa, preferred lower than 2.8MPa further.If the difference of this tensile modulus of elasticity and upper yield point stress and lower yield point stress is in above-mentioned scope, then diaphragm seal can not extend locally, therefore, the mouldability of housing material can be made to improve, suppress to produce pore on barrier layer.Still need explanation, the assay method of the difference of tensile modulus of elasticity, upper yield point stress and lower yield point stress is described in the hurdle of embodiment.
[intermediate layer formed by soft property resin]
The intermediate layer formed by soft property resin can use the intermediate layer formed by olefin hydrocarbons thermoplasticity elastic body (TPO), and it making mouldability improve by forming sealant, making to be difficult to produce pore in barrier layer (aluminium foil).
As for olefin hydrocarbons thermoplasticity elastic body of the present invention, tensile modulus of elasticity is preferably below 300MPa, more preferably below 250MPa.If be this tensile modulus of elasticity, then diaphragm seal can not extend locally, therefore, the mouldability of housing material can be made to improve, suppress to produce pore on barrier layer.Still need explanation, the assay method of tensile modulus of elasticity is described in the hurdle of embodiment.
As the olefin hydrocarbons thermoplasticity elastic body used in the present invention, preferably make the soft component of the hard component of olefin polymer and rubber constituent be polymerized, micro-resin being dispersed with rubber constituent equably in olefin polymer, above-mentioned resin is generally known as R-TPO (Reactor-TPO).
At this, as olefin polymer, be the homopolymers of propylene, or the copolymer composition of other alpha-olefin of propylene and carbon number 2 ~ 8, as other alpha-olefin, such as can enumerate ethene, 1-butylene, 3-methyl-1-butene, 1-amylene, 4-methyl-1-pentene, 1-hexene, 1-octenes etc., wherein optimal ethylene, the propylene content in this copolymer is preferably more than 85 % by weight.
As rubber constituent, for being must composition, the copolymer composition that formed by the copolymer of other alpha-olefin of propylene and carbon number 2 ~ 8 with propylene and ethene.As other alpha-olefin of carbon number 2 ~ 8, material similar to the above can be enumerated.In addition, also can with the amount combined polymerization 1 of 0.5 ~ 10 % by weight in rubber constituent, 4-hexadiene, 5-methyl isophthalic acid, the non-conjugated diene hydrocarbon such as 5-hexadiene, Isosorbide-5-Nitrae-octadiene, cyclohexadiene, cyclo-octadiene, dicyclopentadiene, 5-ethylidene-2-norborene, 5-butylidene-2-norborene, 2-isopropenyl-5-norborene.
Composition for olefin hydrocarbons thermoplasticity elastic body of the present invention comprises the above-mentioned rubber constituent of above-mentioned hard component and 50 ~ 90 % by weight of 10 ~ 50 % by weight.
What olefin hydrocarbons thermoplasticity elastic body was polymerized above-mentioned rubber constituent afterwards preferably by the polymerization in above-mentioned hard component is progressively polymerized manufactured composition.Include machine aluminium compound for this catalyst be progressively polymerized and be necessary solid constituent with titanium atom, magnesium atom, halogen atom and electron donating property compound.
In the manufacture method of olefin hydrocarbons thermoplasticity elastic body, other alpha-olefin of propylene or propylene and carbon number 2 ~ 8 is supplied in the first stage, under the existence of above-mentioned catalyst, with the condition of the dividing potential drop 0.5 ~ 4.5MPa (being preferably 1.0 ~ 3.5MPa) of temperature 50 ~ 150 DEG C (being preferably 50 ~ 100 DEG C), propylene, implement the polymerization of Noblen or propylene-alpha-olefin copolymers, thus manufacture hard component.Then in second stage, supply propylene and ethene, or the alpha-olefin of propylene, ethene and carbon number 4 ~ 8, under the existence of above-mentioned catalyst, with the condition of each 0.3 ~ 4.5MPa of dividing potential drop (being preferably 0.5 ~ 3.5MPa) of temperature 50 ~ 150 DEG C (being preferably 50 ~ 100 DEG C), propylene and ethene, implement the polymerization of propylene-ethylene copolymers or propylene-ethylene-alpha olefin copolymer, thus manufacture rubber constituent.
As the object lesson of olefin hydrocarbons thermoplasticity elastic body, Mitsubishi chemical Co., Ltd's system " ZELAS (ゼ ラ ス) ", Port リ プ ロ Co., Ltd. of JapanPolypropyleneCorporation(Japan can be illustrated) system " NEWCON(ニ ュ ー コ Application) ", PrimePolymerCo., Ltd(Co., Ltd. プ ラ イ system Port リ マ ー) system " PRIMETPO (プ ラ イ system TPO) " etc.
Preferably in the olefines soft property resin forming intermediate layer, do not mix other resinaes and use, its thickness is preferably 10 ~ 60 μm.
[metal adhesion layer]
Metal adhesion layer 31 of the present invention is formed by the material of the adhesive property excellence with the metal forming and intermediate layer or hot welding layer that form barrier layer, the bonding force of the metal on special needs and barrier layer.
Be preferably used in the main chain grafting acid modified resin of Determination of Organic Acids in metal adhesion layer, as long as the resin with the modification of unsaturated carboxylic acid or derivatives thereof, there is no particular restriction.As the example of unsaturated carboxylic acid, such as can enumerate maleic acid, itaconic acid, fumaric acid, as the example of its derivative, such as, can enumerate ester and the acid anhydrides such as maleic mono-ester, maleic acid diester, maleic anhydride, itaconic acid monoesters, itaconic acid diester, itaconic anhydride, fumaric monoalkylester, dimethyl ester, fumaric acid anhydride.As the above-mentioned resin for main chain, the polyvinyls such as straight linear polyethylene, ultra-low density polyethylene, high density polyethylene (HDPE), ethylene-vinyl acetate (VA) copolymer, ethylene-ethylacrylate (EA) copolymer, ethylene-methyl acrylate copolymer can be enumerated, and acronal.
In addition, if the thickness of metal adhesion layer is excessively thin, then adhesive linkage cannot play sufficient closing force, and therefore preferred thickness is more than 5 μm.
[hot welding layer]
As hot welding layer 33 of the present invention, can be selected from polyethylene, polypropylene etc. be representative, with intermediate layer can be bonding resin.Specifically, alpha-olefine polymers can be selected from, the copolymer of ethene and alpha-olefin, the copolymer of propylene and alpha-olefin, the copolymer etc. of the alpha-olefine polymers of metal ion crosslinked or ethene and alpha-olefin, such as, as alpha-olefine polymers or copolymer, low density polyethylene (LDPE) can be used, medium high density polyethylene, linear low density polyethylene (LLDPE), the glycerol polymerization polyethylene of unsaturated carboxylic acid, or homopolymerization type polypropylene, block type polypropylene, random polypropylene etc., the copolymer of ethene and propylene, ethene, the copolymer of propylene and butylene, or by employing their mixture and the layer etc. that formed of the single or multiple lift obtained.Though the thickness of hot welding layer of the present invention is not particularly limited, be preferably 2 ~ 20 μm.
[substrate layer]
Substrate layer 1 is the layer becoming outside when housing material of the present invention is used as the housing material of battery or capacitor, requires intensity to a certain degree and insulating properties.As substrate layer, such as, biaxially oriented polyester film, biaxial stretch-formed nylon membrane etc. can be used.Biaxially oriented polyester film is by being molded into membranaceous by known film-forming methods such as resin T die head extrusion moulding or blowing extrusion moulding such as polyester copolymerization such as PETG, polybutylene terephthalate (PBT), PEN, ethylene glycol terephthalate/ethylene isophthalate copolymer or mutual-phenenyl two acid bromide two alcohol ester/M-phthalic acid butanediol ester copolymers, and then carries out stretching manufacturing in two directions in length and breadth.In addition, as biaxial stretch-formed nylon membrane, by by nylon 6, nylon 6,6, nylon 6,6 and copolymer, the nylon 6 of nylon 6,10, the resin such as poly-meta-xylylene adipamide (MXD6) is molded into membranaceous by known method in the same manner as said method, and then carries out biaxial stretch-formed obtaining.
In addition, by biaxially oriented polyester film and the laminated and duplicature that obtains of biaxial stretch-formed nylon membrane, because the balance of intensity and percentage elongation is good, so be particularly suitable as substrate layer.Still need explanation, now nylon resin is apt to deteriorate when attached to electrolyte, therefore, the outermost layer becoming substrate layer can be set to biaxially oriented polyester film, and the side, barrier layer 2 of substrate layer is set to biaxial stretch-formed nylon membrane.In addition, in order to obtain the substrate layer of the bilayer formed by biaxially oriented polyester film and biaxial stretch-formed nylon membrane, after both can manufacturing each film respectively with said method, fitted by adhesive, also, after can making double-deck film by co-extrusion modling legal system in addition, carry out biaxial stretch-formed to this laminate film.
[barrier layer]
Barrier layer 2 prevents steam from the outside layer infiltrating inside battery.As barrier layer, the metal formings such as aluminium, nickel, stainless steel can be used, but consider that the words of economy preferably use aluminium foil.Still need explanation, known aluminium foil is by improving ductility containing some iron, and the generation of the pore caused by bending tails off.So when aluminium foil is used as barrier layer, it is desirable to the iron containing 0.3 ~ 9.0 % by weight, preferably 0.7 ~ 2.0 % by weight in this aluminium foil.In addition, by the aluminium foil of cold rolling manufacture under annealing (so-called annealing in process) condition, the intensity hardness of its soft property toughness will change, when but using aluminium foil in the present invention, compared with the hard item for disposal without annealing, that crosses through annealing in process a little or completely has the material of soft tendency better.From viewpoints such as moisture block, resistance to gas porosities, the thickness on barrier layer is preferably more than 15 μm, is particularly preferably more than 20 μm.
In addition, metal forming (particularly aluminium foil) surface is easily by corrosion such as acidic materials.It is therefore desirable that impose resistance to acid treatment to barrier layer.If implement resistance to acid treatment, even if then when producing hydrofluoric acid from the inside of battery etc. and when reaching barrier layer, also can prevent corrosion.And the effect of the closing force improving barrier layer and metal adhesion layer is also played in resistance to acid treatment.As resistance to acid-treated method, chromate process is general, but the non-chromate class process etc. such as boehmite process, phosphate antirust treatment, triazine thiol process are also fine.In addition, resistance to acid treatment both can only be implemented in the face of the metal adhesion layer side on barrier layer, also can implement on two sides.
[manufacture of housing material]
The manufacture of housing material 10 of the present invention can follow conventional art, such as there is following method: after substrate layer 1 of fitting on the face of the side on barrier layer 2, and then across the method fitted in intermediate layer 32 and hot welding layer 33 by metal adhesion layer 3 on the another side on barrier layer 2, or, as other method, on the face of the side on barrier layer 2 after fitting in intermediate layer 32 and hot welding layer 33 by metal adhesion layer 31, and then the method for substrate layer 1 of fitting on the another side on barrier layer 2.The excellent adhesion on metal adhesion layer 31 and barrier layer 2, therefore, also can be molded into membranaceous by metal adhesion layer and intermediate layer and hot welding layer coetrusion in advance, afterwards by barrier layer thermo-compressed on the face of the metal adhesion layer 31 of this lamilated body.
Then, enumerate object lesson with regard to battery housing material of the present invention to be described.
Embodiment
In the present embodiment, made and comprised housing material that following layer forms and test its mouldability, this layer of formation comprises substrate layer/barrier layer/sealant.
Outermost layer is the biaxial stretch-formed nylon membrane of thickness 25 μm, and barrier layer is the aluminium foil of thickness 40 μm, and sealant comprises thickness 45 μm.
[manufacture of housing material]
The one side not implementing chromate process on the barrier layer formed by the aluminium foil implementing chromate process at one side is overlapped with the biaxial stretch-formed nylon face of substrate layer, with adhesive by substrate layer and barrier layer laminated.Then, by the trilamellar membrane T die head coetrusion masking formed by the resin bed (intermediate layer) recorded in maleated polypropylene resin bed (metal adhesion layer) and table 1 and polypropylene resin layer (hot welding layer), obtain the trilamellar membrane as sealant.Then, in the mode making the face of the chromate process of aluminium foil contact with maleated polypropylene resin bed (metal adhesion layer), by the laminate film that formed by substrate layer/barrier layer and trilamellar membrane laminated, thus make housing material of the present invention.
[test method and result thereof]
After making housing material, deep draw is molded into battery (cell) shape of size 50mm × 50mm degree of depth 6mm at normal temperatures, evaluates mouldability.Mouldability is undertaken checking by the presence or absence of the pore of the aluminium foil on barrier layer.In the test of mouldability, be qualified not produce the situation of pore on barrier layer, to produce even the situation of a pore is defective, 6 or 10 tests carried out for the every example of each example.Result of the test is shown in the embodiment 1 ~ 6 of table 1.By these result of the tests, confirm that the generation of pore obtains suppression in barrier layer by soft property resin is used as intermediate layer.
Obtained film deep-draw platen press is molded into dish (tray) shape, then in this dish, inserts battery main body, make lithium ion battery.Even if this lithium ion battery Long-Time Service, also can not peel off between barrier layer and adhesive linkage, and the sign not having moisture to infiltrate.
Use following resin to make the sealant of the present embodiment.
Hot welding layer: random PP; Ethylene contents is the random polypropylene of 4.5wt%
Intermediate layer: TPO (1) (PP class): MRF (g/10 minute)=5.0, tensile modulus of elasticity (MPa)=100
TPO (2) (PP class): MRF (g/10 minute)=2.8, tensile modulus of elasticity (MPa)=190
TPO (3) (PP class): MRF (g/10 minute)=4.5, tensile modulus of elasticity (MPa)=190
Metal adhesion layer: sour MODIFIED PP; Maleic anhydride modified polypropylene
TPO described in embodiment refers to, the soft component of the hard component of polyolefin polymers and rubber constituent is polymerized, differential falls apart rubber constituent and the resin that obtains equably in polyolefin polymers.
Still need explanation, the evaluation of each characteristic is undertaken by following method.
(1) tensile modulus of elasticity
About the tensile modulus of elasticity of TPO, the TPO film of 100 μm is filmed, this film is carried out tension test based on JISZ1702, the stress-strain diagram that stress (MPa) makes the longitudinal axis, transverse axis is made in strain (%) is got in making, using the slope of the initial stage straight line portion of this curve as tensile modulus of elasticity.
In addition, about the tensile modulus of elasticity of sealant, to the test film (cross direction is the TD direction of film) of the sealant of the wide strip of 10mm, at normal temperatures, under chuck spacing 40mm, draw speed 50mm/ minute, tension test is carried out with cupping machine, the stress-strain diagram that stress (MPa) makes the longitudinal axis, transverse axis is made in strain (%) is got in making, using the slope of the initial stage straight line portion of this curve as tensile modulus of elasticity.
(2) difference of upper yield point stress and lower yield point stress
To the test film of the sealant (cross direction is the TD direction of film) of the wide strip of 10mm, at normal temperatures, under chuck spacing 40mm, draw speed 500mm/ minute, tension test is carried out with cupping machine, the stress-strain diagram that stress (MPa) makes the longitudinal axis, transverse axis is made in strain (%) is got in making, with the maximum stress of Hookean region for upper yield point, with exceed upper yield point and stress some decline, stress fixes and strains the mean stress of the part of temporarily carrying out for lower yield point, tried to achieve by following formula.
Formula: the stress value of the stress value-lower yield point of the difference=upper yield point of upper yield point stress and lower yield point stress.
[table 1]
[comparative test]
Be used as except intermediate layer except by following resin, the housing material of comparison test in the same manner as above-described embodiment, similarly tests mouldability.Result of the test is shown in Table 2.Through distinguishing, the mouldability of following housing material is non-good: as intermediate layer, only used the housing material of block PP, or employs the housing material that with the addition of the elastomeric resin of PP class as modifier in block PP or random PP.
The intermediate layer resin used: block PP
Random PP; Ethylene contents is the random polypropylene of 4.5wt%
PP class elastomer (1): propylene-ethylene-butene-1 copolymer rubber
PP class elastomer (2): ethylene-butene copolymer rubber
[table 2]
industry utilizes possibility
The present invention can be used as the housing material of the battery such as lithium ion battery or lithium polymer battery or capacitor.Battery housing material of the present invention is shaped to container by deep draw, in this container, inserts lithium ion battery and sealed by thermal welding.Due to when shaping, the formation of pore is suppressed must be low, therefore in the sealing system of battery without infiltrating from the anxiety of the moisture of outside, the possibility that the electrolytical hydrolysis of battery produces is extremely low.Therefore, do not exist and to be produced acid and heat by electrolytical hydrolysis, corrode the barrier layer be made up of metal the adhesive strength of interlayer is declined, or the situation of battery catches fire because of the heat produced, therefore, in the lithium ion battery held in container based on housing material of the present invention, just there is not the decline of the electromotive force caused that to be risen by temperature, the situation of the machine connected stopping, fault yet.
Therefore, the present invention is as the packaging material of the case for holding polymer battery, steam and other gas barriers excellence, and the mechanical strength that to have with thorn resistance etc. be representative, even if also can use at high temperature, electrolyte is also stablized, lithium ion battery all safe and stable under can be provided in any environment.
Symbol description
10: battery housing material
1: substrate layer
2: barrier layer
3: sealant
31: metal adhesion layer
32: the intermediate layer formed by soft property resin
33: hot welding layer.
Claims (8)
1. battery housing material, it is the one side at substrate layer successively laminated barrier layer, sealant and the packaging material obtained, and it is characterized in that, sealing layer comprises metal adhesion layer, with soft property resin be main component intermediate layer and hot welding layer.
2. the battery housing material described in claim 1, wherein, the soft property resin in described intermediate layer is olefin hydrocarbons thermoplasticity elastic body.
3. the battery housing material described in claim 2, wherein, described metal adhesion layer take acid-modified polyolefin resin as main component.
4. the battery housing material described in claim 1, wherein, the soft property resin in described intermediate layer be have deep draw shaping time the soft property resin of even autgmentability.
5. the battery housing material described in claim 1, wherein, the resinous principle comprised in described intermediate layer is only the olefin hydrocarbons thermoplasticity elastic body for soft property resin.
6. the battery housing material described in claim 1, wherein, described metal adhesion layer take acid-modified polyolefin resin as main component.
7. the battery housing material described in claim 1, wherein, described substrate layer comprise with mylar be main component biaxial stretch-formed rete and/or take polyamide as the biaxial stretch-formed rete of main component.
8. the battery housing material described in any one of claim 1 to 7, it is used as the shaping battery case of deep draw.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013096153 | 2013-05-01 | ||
| JP2013-096153 | 2013-05-01 | ||
| PCT/JP2014/061687 WO2014178343A1 (en) | 2013-05-01 | 2014-04-25 | Battery packaging material |
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|---|---|
| CN105144423A true CN105144423A (en) | 2015-12-09 |
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| CN201480024239.0A Pending CN105144423A (en) | 2013-05-01 | 2014-04-25 | Battery packaging material |
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| JP (1) | JP5763848B2 (en) |
| KR (1) | KR20160003694A (en) |
| CN (1) | CN105144423A (en) |
| WO (1) | WO2014178343A1 (en) |
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| CN105895833A (en) * | 2016-05-30 | 2016-08-24 | 苏州福斯特光伏材料有限公司 | Flexible package material of lithium ion battery |
| CN109671875A (en) * | 2017-10-16 | 2019-04-23 | 昭和电工包装株式会社 | Electric energy storage device housing material and electric energy storage device |
| JP2019117795A (en) * | 2017-07-19 | 2019-07-18 | 大日本印刷株式会社 | Battery packaging material, method for manufacturing battery packaging material, and battery |
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| WO2016153060A1 (en) * | 2015-03-26 | 2016-09-29 | 大日本印刷株式会社 | Battery packaging material |
| WO2016159233A1 (en) * | 2015-03-31 | 2016-10-06 | 大日本印刷株式会社 | Packaging material for cell, process for producing same, and cell |
| CN114725589B (en) * | 2016-05-31 | 2024-08-06 | 大日本印刷株式会社 | Packaging material for battery, method for producing same, battery, and polyester film |
| KR101736687B1 (en) * | 2016-09-23 | 2017-05-16 | 이강모 | Poly propylene multiple flim and manufacturing method thereof |
| CN108701780B (en) * | 2016-11-28 | 2022-08-30 | 大日本印刷株式会社 | Battery packaging material, method for producing same, and battery |
| JP7104137B2 (en) * | 2018-10-24 | 2022-07-20 | 大日本印刷株式会社 | Exterior materials for power storage devices, their manufacturing methods, and power storage devices |
| JP7163743B2 (en) * | 2018-12-04 | 2022-11-01 | 大日本印刷株式会社 | Electrical storage device packaging material, method for manufacturing electrical storage device packaging material, and electrical storage device |
| JP7525972B2 (en) | 2020-01-07 | 2024-07-31 | 株式会社レゾナック・パッケージング | Heat exchanger |
| KR20240121062A (en) * | 2023-02-01 | 2024-08-08 | 주식회사 엘지에너지솔루션 | Pouch film and secondary battery |
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| JP2008277274A (en) * | 2007-03-30 | 2008-11-13 | Dainippon Printing Co Ltd | Packaging material for flat electrochemical cell |
| JP2012238516A (en) * | 2011-05-12 | 2012-12-06 | Okura Ind Co Ltd | Outer packaging material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895833A (en) * | 2016-05-30 | 2016-08-24 | 苏州福斯特光伏材料有限公司 | Flexible package material of lithium ion battery |
| JP2019117795A (en) * | 2017-07-19 | 2019-07-18 | 大日本印刷株式会社 | Battery packaging material, method for manufacturing battery packaging material, and battery |
| JP7151538B2 (en) | 2017-07-19 | 2022-10-12 | 大日本印刷株式会社 | BATTERY PACKAGING MATERIAL, METHOD FOR MANUFACTURING BATTERY PACKAGING MATERIAL, AND BATTERY |
| CN109671875A (en) * | 2017-10-16 | 2019-04-23 | 昭和电工包装株式会社 | Electric energy storage device housing material and electric energy storage device |
| CN109671875B (en) * | 2017-10-16 | 2023-08-01 | 株式会社乐索纳克包装 | Outer packaging material for power storage device and power storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160003694A (en) | 2016-01-11 |
| JPWO2014178343A1 (en) | 2017-02-23 |
| WO2014178343A1 (en) | 2014-11-06 |
| JP5763848B2 (en) | 2015-08-12 |
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