JP6988933B2 - 電池用包装材料 - Google Patents
電池用包装材料 Download PDFInfo
- Publication number
- JP6988933B2 JP6988933B2 JP2020018606A JP2020018606A JP6988933B2 JP 6988933 B2 JP6988933 B2 JP 6988933B2 JP 2020018606 A JP2020018606 A JP 2020018606A JP 2020018606 A JP2020018606 A JP 2020018606A JP 6988933 B2 JP6988933 B2 JP 6988933B2
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- Japan
- Prior art keywords
- layer
- battery
- packaging material
- base material
- metal 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.)
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- 239000005022 packaging material Substances 0.000 title claims description 116
- 239000010410 layer Substances 0.000 claims description 315
- 229910052751 metal Inorganic materials 0.000 claims description 117
- 239000002184 metal Substances 0.000 claims description 117
- 239000000463 material Substances 0.000 claims description 94
- 239000000565 sealant Substances 0.000 claims description 78
- 239000012790 adhesive layer Substances 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 36
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 7
- 229920006284 nylon film Polymers 0.000 claims description 5
- 239000002585 base Substances 0.000 description 73
- -1 fluororesin Polymers 0.000 description 41
- 238000011282 treatment Methods 0.000 description 33
- 239000000853 adhesive Substances 0.000 description 30
- 230000001070 adhesive effect Effects 0.000 description 30
- 229920005989 resin Polymers 0.000 description 30
- 239000011347 resin Substances 0.000 description 30
- 229920000098 polyolefin Polymers 0.000 description 25
- 239000011247 coating layer Substances 0.000 description 18
- 239000000126 substance Substances 0.000 description 18
- 238000011156 evaluation Methods 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 16
- 125000004122 cyclic group Chemical group 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 239000008151 electrolyte solution Substances 0.000 description 10
- 238000010030 laminating Methods 0.000 description 10
- 239000006224 matting agent Substances 0.000 description 10
- 238000000465 moulding Methods 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 8
- 229920001225 polyester resin Polymers 0.000 description 8
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- 239000004743 Polypropylene Substances 0.000 description 7
- 239000002253 acid Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 125000000217 alkyl group Chemical group 0.000 description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 244000144972 livestock Species 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 239000004925 Acrylic resin Substances 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
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- 239000000178 monomer Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229920002292 Nylon 6 Polymers 0.000 description 4
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- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000009820 dry lamination Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
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- 239000011651 chromium Substances 0.000 description 3
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- 238000004140 cleaning Methods 0.000 description 3
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- 239000005011 phenolic resin Substances 0.000 description 3
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 3
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- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
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- 229920000573 polyethylene Polymers 0.000 description 3
- 239000011112 polyethylene naphthalate Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
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- 239000000243 solution Substances 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 229920000299 Nylon 12 Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 2
- 229920006223 adhesive resin Polymers 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000005576 amination reaction Methods 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 238000006757 chemical reactions by type Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 229910021563 chromium fluoride Inorganic materials 0.000 description 2
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
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- 229920001084 poly(chloroprene) Polymers 0.000 description 2
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- 150000003141 primary amines Chemical class 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
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- 239000005060 rubber Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
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- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 125000004066 1-hydroxyethyl group Chemical group [H]OC([H])([*])C([H])([H])[H] 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
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical compound NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 125000003504 2-oxazolinyl group Chemical group O1C(=NCC1)* 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 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
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 description 1
- GVNWZKBFMFUVNX-UHFFFAOYSA-N Adipamide Chemical compound NC(=O)CCCCC(N)=O GVNWZKBFMFUVNX-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 229910021555 Chromium Chloride Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101000576320 Homo sapiens Max-binding protein MNT Proteins 0.000 description 1
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- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
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- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
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- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 1
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- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
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- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 235000010237 calcium benzoate Nutrition 0.000 description 1
- 239000004301 calcium benzoate Substances 0.000 description 1
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- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- HZQXCUSDXIKLGS-UHFFFAOYSA-L calcium;dibenzoate;trihydrate Chemical compound O.O.O.[Ca+2].[O-]C(=O)C1=CC=CC=C1.[O-]C(=O)C1=CC=CC=C1 HZQXCUSDXIKLGS-UHFFFAOYSA-L 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 description 1
- ZGDGIUMTVRHHKI-UHFFFAOYSA-K chromium(3+);hydrogen carbonate Chemical compound [Cr+3].OC([O-])=O.OC([O-])=O.OC([O-])=O ZGDGIUMTVRHHKI-UHFFFAOYSA-K 0.000 description 1
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Description
項1. 少なくとも、基材層、金属層、及びシーラント層が順次積層された積層体からなり、
前記積層体の総厚みが50〜80μmの範囲にあり、
前記積層体の総厚みに対する、前記基材層及び前記金属層の厚みの和の比率が、0.380〜0.630の範囲にある、電池用包装材料。
項2. 前記積層体の総厚みに対する、前記シーラント層の厚みの比率が、0.300〜0.570の範囲にある、項1に記載の電池用包装材料。
項3. 前記基材層の厚みが9〜25μmの範囲にあり、
前記金属層の厚みが15〜30μmの範囲にあり、
前記シーラント層の厚みが、22〜35μmの範囲にある、
項1または2に記載の電池用包装材料。
項4. 前記基材層が、2軸延伸ナイロンフィルムまたは2軸延伸PETフィルムである、項1〜3のいずれかに記載の電池用包装材料。
項5. 前記金属層が、アルミニウム箔により形成されている、項1〜4のいずれかに記載の電池用包装材料。
項6. 少なくとも正極、負極、及び電解質を備えた電池素子が、項1〜5のいずれかに記載の電池用包装材料内に収容されている、電池。
項7. 電池の製造方法であって、
少なくとも正極、負極、及び電解質を備えた電池素子を電池用包装材料で収容する工程を含み、
前記電池用包装材料は、少なくとも、基材層、金属層、及びシーラント層が順次積層された積層体からなり、
前記積層体の総厚みが50〜80μmの範囲にあり、
前記積層体の総厚みに対する、前記基材層及び前記金属層の厚みの和の比率が、0.380〜0.630の範囲にある、電池の製造方法。
項8. 少なくとも、基材層、金属層、及びシーラント層が順次積層された積層体からなり、
前記積層体の総厚みが50〜80μmの範囲にあり、
前記積層体の総厚みに対する、前記基材層及び前記金属層の厚みの和の比率が、0.380〜0.630の範囲にある積層体の、電池用包装材料としての使用。
電池用包装材料は、図1に示すように、少なくとも、基材層1、金属層3、及びシーラント層4が順次積層された積層体からなる。本発明の電池用包装材料において、基材層1が最外層になり、シーラント層4は最内層になる。即ち、電池の組み立て時に、電池素子の周縁に位置するシーラント層4同士が熱溶着して電池素子を密封することにより、電池素子が封止される。
本発明の電池用包装材料を構成する積層体の総厚みは、50〜80μmの範囲にある。電池用包装材料において、総厚みが80μm以下というものは、極めて薄く、通常の設計であれば、成形時のピンホールが非常に発生しやすく、突き刺し強度も小さくなる。これに対して、本発明の電池用包装材料においては、積層体の厚みを50〜80μmの範囲に設定した上で、積層体の総厚みに対する、基材層及び金属層の厚みの和の比率を0.380〜0.630の範囲に設定することにより、成形性及び突き刺し強度に優れた電池用包装材料となる。なお、本発明において、電池用包装材料を構成する積層体の総厚みは、電池用包装材料の中央部分において、マイクロゲージを用いて測定した値である。
(成形性)
本発明の電池用包装材料は、積層体の総厚みを上記の範囲に設定するとともに、積層体の総厚みに対する基材層と金属層の厚みの和の比を上記の範囲に設定することにより、厚みが非常に薄いにも拘わらず、優れた成形性を備えている。具体的には、成形深さ6mm、0.1MPaの押え圧(面圧)で押えて、冷間成形するという厳しい条件で成形性した場合にも、成形された電池用包装材料における金属層のピンホール及びクラックが効果的に抑制されている。なお、成形性の評価は、より具体的には、実施例に記載の方法により行うことができる。
本発明の電池用包装材料は、積層体の総厚みを上記の範囲に設定するとともに、積層体の総厚みに対する基材層と金属層の厚みの和の比を上記の範囲に設定することにより、厚みが非常に薄いにも拘わらず、優れた突き刺し強度を備えている。より具体的には、例えば、JIS 1707:1997の規定に準拠し、電池用包装材料に対して、直径1.0mm、先端形状半径0.5mmの半円形の針を毎分50±5mm速度で突き刺し、針が貫通するまでの最大応力を測定した場合の最大応力を10N以上、好ましくは12〜15Nとすることができる。なお、突き刺し強度の評価は、より具体的には、実施例に記載の方法により行うことができる。
本発明の電池用包装材料は、積層体の総厚みを上記の範囲に設定するとともに、積層体の総厚みに対する基材層と金属層の厚みの和の比を上記の範囲に設定することにより、厚みが非常に薄いにも拘わらず、優れたコシ(折れ曲がりやすさ)を有している。より具体的には、例えば、東洋精機株式会社製のLOOP STIFFNESS TESTERによって測定したループステフィネス値(測定条件:サンプル幅15mm、ループ円周 100mm、押しつぶし残り距離 15mm)を、好ましくは5.0g〜15.0gの範囲、より好ましくは5.5〜12.0gの範囲とすることができる。なお、コシの評価は、より具体的には、実施例に記載の方法により行うことができる。
本発明の電池用包装材料は、積層体の総厚みと、当該積層体の総厚みに対する基材層と金属層の厚みの和の比とを上記特定の範囲に設定し、さらに積層体の総厚みに対するシーラント層の厚みの比率を上記の範囲にすることにより、厚みが非常に薄いにも拘わらず、優れた絶縁性を備えている。具体的には、例えば、アルミニウムタブを挟み込むようにしてシーラント層同士をヒートシールし、両側の基材層の表面にテスターの端子をそれぞれ接続して、テスター間にDC25Vの電圧を15秒間印加した場合の抵抗値を1MΩ以上、好ましくは1〜10MΩとすることができる。なお、絶縁性の評価は、より具体的には、実施例に記載の方法により行うことができる。
本発明の電池用包装材料は、積層体の総厚みと、当該積層体の総厚みに対する基材層と金属層の厚みの和の比とを上記特定の範囲に設定し、さらに積層体の総厚みに対するシーラント層の厚みの比率を上記の範囲にすることにより、厚みが非常に薄いにも拘わらず、優れたシール強度を備えている。具体的には、例えば、電池用包装材料のシーラント層同士を、シール温度190℃、面圧1.0MPa、シール時間3.0秒でヒートシールし、ヒートシール部を引張り機で300mm/分の速度で引張り、シール強度を測定した場合に、シール強度を40N/15mm以上、好ましくは60〜75N/15mmとすることができる。なお、シール強度の評価は、より具体的には、実施例に記載の方法により行うことができる。
本発明の電池用包装材料は、積層体の総厚みと、当該積層体の総厚みに対する基材層と金属層の厚みの和の比とを上記特定の範囲に設定し、さらに積層体の総厚みに対するシーラント層の厚みの比率を上記の範囲にすることにより、厚みが非常に薄いにも拘わらず、優れた耐電解液性を備えている。具体的には、例えば、電池用包装材料をシーラント層側に凹部が形成されるように成形し、この凹部に電解液(1MのLiPF6と、エチレンカーボネート、ジエチルカーボネート及びジメチルカーボネート(容量比1:1:1)の混合液とからなる)を充填し、もう1枚の電池用包装材料をシーラント層同士が対向するように凹部の上から重ね、周縁部をヒートシールして、これを85℃で1日間保存した後、開封して、金属層とシーラント層の間のおけるデラミネーションの有無を目視で確認した場合に、デラミネーションが発生しない。なお、耐電解液性の評価は、より具体的には、実施例に記載の方法により行うことができる。
[基材層1]
本発明の電池用包装材料において、基材層1は最外層を形成する層である。基材層1を形成する素材については、絶縁性を備えるものであることを限度として特に制限されるものではない。基材層1を形成する素材としては、例えば、ポリエステル樹脂、ポリアミド樹脂、エポキシ樹脂、アクリル樹脂、フッ素樹脂、ポリウレタン樹脂、珪素樹脂、フェノール樹脂、及びこれらの混合物や共重合物等の樹脂フィルムが挙げられる。これらの中でも、好ましくはポリエステル樹脂、ポリアミド樹脂が挙げられ、より好ましくは2軸延伸ポリエステル樹脂、2軸延伸ポリアミド樹脂が挙げられる。ポリエステル樹脂としては、具体的には、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート、ポリブチレンナフタレート、共重合ポリエステル、ポリカーボネート等が挙げられる。また、ポリアミド樹脂としては、具体的には、ナイロン6、ナイロン6,6、ナイロン6とナイロン6,6との共重合体、ナイロン6,10、ポリメタキシリレンアジパミド(MXD6)等が挙げられる。
本発明の電池用包装材料において、接着層2は、基材層1と金属層3を強固に接着させるために、これらの間に必要に応じて設けられる層である。
電池用包装材料において、金属層3は、電池用包装材料の強度向上の他、電池内部に水蒸気、酸素、光などが侵入することを防止するためのバリア層として機能する層である。金属層3を構成する金属としては、具体的には、アルミニウム、ステンレス、チタンなどが挙げられ、好ましくはアルミニウムが挙げられる。金属層3は、金属箔や金属蒸着などにより形成することができ、金属箔により形成することが好ましく、アルミニウム箔により形成することがさらに好ましい。電池用包装材料の製造時に、金属層3にしわやピンホールが発生することを防止する観点からは、例えば、焼きなまし処理済みのアルミニウム(JIS A8021P−O、JIS A8079P−O)など軟質アルミニウム箔により形成することがより好ましい。
本発明の電池用包装材料において、シーラント層4は、最内層に該当し、電池の組み立て時にシーラント層同士が熱溶着して電池素子を密封する層である。
本発明の電池用包装材料において、接着層5は、金属層3とシーラント層4を強固に接着させために、これらの間に必要に応じて設けられる層である。
本発明の電池用包装材料においては、意匠性、耐電解液性、耐擦過性、成形性の向上などを目的として、必要に応じて、基材層1の上(基材層1の金属層3とは反対側)に、必要に応じて、コーティング層(図示しない)を設けてもよい。コーティング層は、電池を組み立てた時に、最外層に位置する層である。
本発明の電池用包装材料の製造方法については、所定の組成の各層を積層させた積層体が得られる限り、特に制限されないが、例えば、以下の方法が例示される。
本発明の電池用包装材料は、正極、負極、電解質等の電池素子を密封して収容するための包装材料として使用される。
<電池用包装材料の製造>
基材層1/接着層2/金属層3が順に積層された積層体に対して、押出しラミネーション法でシーラント層4を積層させることにより、基材層1/接着層2/金属層3/シーラント層4が順に積層された積層体からなる電池用包装材料を製造した。なお、実施例4,10−13,24−26の電池用包装材料においては、基材層1の金属層とは反対側にコーティング層を設けた。電池用包装材料の具体的な製造条件は、以下に示す通りである。
上記で得られた電池用包装材料を裁断して、120×80mmの短冊片を作製して試験片とし、当該試験片の中央部分において、ダイアルゲージ(ミツトヨ社製の547-401)を用いて積層体の総厚みを測定した。結果を表1に示す。
上記で得られた各電池用包装材料を裁断して、120×80mmの短冊片を作製し、これを試験サンプルとした。30×50mmの矩形状の雄型とこの雄型とのクリアランスが0.5mmの雌型からなるストレート金型を用い、雄型側に熱接着性樹脂層側が位置するように雌型上に上記試験サンプルを載置し、それぞれ、成形深さ5.5mmとなるように当該試験サンプルを0.1MPaの押え圧(面圧)で押えて、冷間成形(引き込み1段成形)した。成形された電池用包装材料における金属層のピンホール及びクラックの発生の有無を確認し、ピンホール及びクラックの発生率(%)を算出した。ピンホール及びクラックの発生率は、上記成形を行った後に1カ所でもピンホール又はクラックが認められるものを成形不良品として判別し、30個の試験サンプルを上記条件で成形した際に発生した成形不良品の割合として求めた。結果を表2に示す。
JIS 1707:1997の規定に準拠し、上記で得られた各電池用包装材料に対して、直径1.0mm、先端形状半径0.5mmの半円形の針を毎分50±5mm速度で突き刺し、針が貫通するまでの最大応力を測定した。それぞれの試験片の数は、5個として、最大応力の平均値を求めた。評価基準は、12N以上である場合を〇、12N未満である場合を×とした。結果を表2に示す。
上記で得られた各電池用包装材料を幅40mm、長さ100mmのサイズに切り取り試験片を得た。次に、この試験片を短辺同士が対向するように折り返し、試験片のシーラント層の表面が互いに対向するように配置した。次に、互いに対向するシーラント層の表面の間に厚さ100μm、幅5mmのアルミニウム製の電極タブを挿入した。次に、この状態で電池用包装材料の長さ方向に直交する方向に上下共に7mm幅の平板状熱板からなるヒートシール機でシーラント層同士をヒートシールした。次に、電池用包装材料のアルミニウムタブが挟まれた部分が中央になるようにして、両側の基材層の表面にテスターの端子をそれぞれ接続した。次に、テスター間にDC25Vの電圧を15秒間印加し、その間の抵抗値を測定した。絶縁性の評価基準は、抵抗値が1MΩ以上であった場合を○、1MΩ未満であった場合を×とした。結果を表2に示す。
上記で得られた各電池用包装材料を60mm(MD方向)×120mm(TD方向)の短冊片に裁断した。各短冊片をTD方向に二つ折りにし、対向する2辺を7mm巾でヒートシールして一方に開口を有する袋を作製した。次に、得られた袋の開口部を7mm巾、シール温度190℃、面圧1.0MPa、シール時間3.0秒でヒートシールした。次に、開口部におけるヒートシール部を15mm巾の短冊状に切り取り、これを引張り機(島津製作所製、AGS−50D(商品名))で300mm/分の速度で引張り、シール強度を測定した。単位はN/15mm巾である。シール強度の評価基準は、シール強度が60N/15mm以上である場合を○、60N/15mm未満である場合を×とした、結果を表2に示す。
上記で得られた各電池用包装材料のループステフィネス値によって、電池用包装材料のコシ(折れ曲がりやすさ)を評価した。東洋精機株式会社製のLOOP STIFFNESSTESTERによってループステフィネス値(測定条件:サンプル幅15mm、ループ円周 100mm、押しつぶし残り距離 15mm)を測定した。測定はN=5で行い、その平均値求めた。評価基準は、ループステフィネス値が5.5g〜12.0gである場合を○、5.0g未満である場合及び15.0g以上を×とした。結果を表2に示す。
上記で得られた各電池用包装材料を80mm×150mmに裁断した後、35mm×50mmの口径の成型金型(メス型)とこれに対応した成型金型(オス型)にて、0.4MPaで3.0mmの深さに冷間成型し、その中心部分に凹部を形成した。この凹部に上記の電解液(1MのLiPF6と、エチレンカーボネート、ジエチルカーボネート及びジメチルカーボネート(容量比1:1:1)の混合液とからなる)3gを充填し、もう1枚の電池用包装材料をシーラント層同士が対向するように凹部の上から重ね、周縁部をヒートシールした。ヒートシールの条件は、190℃、面圧1.0MPaで3秒間とした。これを、85℃で1日間保存した後、開封して、金属層とシーラント層の間のおけるデラミネーションの有無を目視で確認した。結果を表2示す。
上記で得られた電池用包装材料を構成する基材層と金属層の厚み下限値が、カタログなどに掲載されており、一般に入手可能な厚みであるか否かによって、経済性・汎用性を評価した。評価基準は、経済性・汎用性の高いものを○、やや低いものを△、低いものを×とした。結果を表2に示す。
2 接着層
3 金属層
4 シーラント層
5 接着層
Claims (9)
- 少なくとも、基材層、接着層、金属層、及びシーラント層が順次積層された積層体からなり、
前記シーラント層は、前記積層体の最内層であり、かつ、前記金属層の表面に形成されており、
前記積層体の総厚みが50μm以上80μm以下の範囲にあり、
前記シーラント層の厚みが、22μm以上35μm以下の範囲にあり、
前記基材層は、2軸延伸ナイロンフィルムにより構成されており、
前記積層体の総厚みに対する、前記基材層及び前記金属層の厚みの和の比率が、0.380以上0.692以下の範囲にある、電池用包装材料。 - 前記積層体の総厚みに対する、前記シーラント層の厚みの比率が、0.262以上0.570以下の範囲にある、請求項1に記載の電池用包装材料。
- 前記基材層及び前記金属層の厚みの和に対する前記基材層の厚みの比率が、0.324以上0.444以下の範囲にある、請求項1または2に記載の電池用包装材料。
- 前記金属層の厚みに対する前記基材層1の厚みの比率が、0.450以上1.700以下の範囲にある、請求項1〜3のいずれかに記載の電池用包装材料。
- 前記基材層の厚みが9μm以上25μm以下の範囲にあり、
前記金属層の厚みが15μm以上30μm以下の範囲にあり、
前記シーラント層の厚みが、22μm以上35μm以下の範囲にある、
請求項1〜4のいずれかに記載の電池用包装材料。 - 前記金属層が、アルミニウム箔により形成されている、請求項1〜5のいずれかに記載の電池用包装材料。
- 少なくとも正極、負極、及び電解質を備えた電池素子が、請求項1〜6のいずれかに記載の電池用包装材料内に収容されている、電池。
- 電池の製造方法であって、
少なくとも正極、負極、及び電解質を備えた電池素子を電池用包装材料で収容する工程を含み、
前記電池用包装材料は、少なくとも、基材層、接着層、金属層、及びシーラント層が順次積層された積層体からなり、
前記シーラント層は、前記積層体の最内層であり、かつ、前記金属層の表面に形成されており、
前記積層体の総厚みが50μm以上80μm以下の範囲にあり、
前記シーラント層の厚みが、22μm以上35μm以下の範囲にあり、
前記基材層は、2軸延伸ナイロンフィルムにより構成されており、
前記積層体の総厚みに対する、前記基材層及び前記金属層の厚みの和の比率が、0.380以上0.692以下の範囲にある、電池の製造方法。 - 少なくとも、基材層、接着層、金属層、及びシーラント層が順次積層された積層体からなり、
前記シーラント層は、前記積層体の最内層であり、かつ、前記金属層の表面に形成されており、
前記積層体の総厚みが50μm以上80μm以下の範囲にあり、
前記シーラント層の厚みが、22μm以上35μm以下の範囲にあり、
前記基材層は、2軸延伸ナイロンフィルムにより構成されており、
前記積層体の総厚みに対する、前記基材層及び前記金属層の厚みの和の比率が、0.380以上0.692以下の範囲にある積層体の、電池用包装材料としての使用。
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