CN107845742A - Power battery and battery module thereof - Google Patents
Power battery and battery module thereof Download PDFInfo
- Publication number
- CN107845742A CN107845742A CN201610836507.XA CN201610836507A CN107845742A CN 107845742 A CN107845742 A CN 107845742A CN 201610836507 A CN201610836507 A CN 201610836507A CN 107845742 A CN107845742 A CN 107845742A
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- CN
- China
- Prior art keywords
- battery
- electrokinetic cell
- flame retardant
- retardant coating
- cell according
- 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
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- 239000003063 flame retardant Substances 0.000 claims abstract description 85
- 238000000576 coating method Methods 0.000 claims abstract description 61
- 239000011248 coating agent Substances 0.000 claims abstract description 60
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000000839 emulsion Substances 0.000 claims description 8
- 229920000877 Melamine resin Polymers 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- DEIGXXQKDWULML-UHFFFAOYSA-N 1,2,5,6,9,10-hexabromocyclododecane Chemical compound BrC1CCC(Br)C(Br)CCC(Br)C(Br)CCC1Br DEIGXXQKDWULML-UHFFFAOYSA-N 0.000 claims description 2
- WFLOTYSKFUPZQB-UHFFFAOYSA-N 1,2-difluoroethene Chemical group FC=CF WFLOTYSKFUPZQB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 2
- 229930195725 Mannitol Natural products 0.000 claims description 2
- 229920000388 Polyphosphate Polymers 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical group [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical group C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- STIAPHVBRDNOAJ-UHFFFAOYSA-N carbamimidoylazanium;carbonate Chemical compound NC(N)=N.NC(N)=N.OC(O)=O STIAPHVBRDNOAJ-UHFFFAOYSA-N 0.000 claims description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 2
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 2
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 claims description 2
- CDMADVZSLOHIFP-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 CDMADVZSLOHIFP-UHFFFAOYSA-N 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- HANVTCGOAROXMV-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine;urea Chemical compound O=C.NC(N)=O.NC1=NC(N)=NC(N)=N1 HANVTCGOAROXMV-UHFFFAOYSA-N 0.000 claims description 2
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 2
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 2
- 239000000594 mannitol Substances 0.000 claims description 2
- 235000010355 mannitol Nutrition 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- ZTFZSHLWORMEHO-UHFFFAOYSA-A pentaaluminum;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O ZTFZSHLWORMEHO-UHFFFAOYSA-A 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000001205 polyphosphate Substances 0.000 claims description 2
- 235000011176 polyphosphates Nutrition 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 2
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 claims description 2
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims 2
- HBGPNLPABVUVKZ-POTXQNELSA-N (1r,3as,4s,5ar,5br,7r,7ar,11ar,11br,13as,13br)-4,7-dihydroxy-3a,5a,5b,8,8,11a-hexamethyl-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1h-cyclopenta[a]chrysen-9-one Chemical compound C([C@@]12C)CC(=O)C(C)(C)[C@@H]1[C@H](O)C[C@]([C@]1(C)C[C@@H]3O)(C)[C@@H]2CC[C@H]1[C@@H]1[C@]3(C)CC[C@H]1C(=C)C HBGPNLPABVUVKZ-POTXQNELSA-N 0.000 claims 1
- PFRGGOIBYLYVKM-UHFFFAOYSA-N 15alpha-hydroxylup-20(29)-en-3-one Natural products CC(=C)C1CCC2(C)CC(O)C3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 PFRGGOIBYLYVKM-UHFFFAOYSA-N 0.000 claims 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims 1
- SOKRNBGSNZXYIO-UHFFFAOYSA-N Resinone Natural products CC(=C)C1CCC2(C)C(O)CC3(C)C(CCC4C5(C)CCC(=O)C(C)(C)C5CCC34C)C12 SOKRNBGSNZXYIO-UHFFFAOYSA-N 0.000 claims 1
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 claims 1
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims 1
- 239000000395 magnesium oxide Substances 0.000 claims 1
- MEFUMNTZTUDUBG-UHFFFAOYSA-N oxalonitrile 1,3,5-triazine-2,4,6-triamine Chemical group N#CC#N.N1=C(N)N=C(N)N=C1N MEFUMNTZTUDUBG-UHFFFAOYSA-N 0.000 claims 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims 1
- GNHOJBNSNUXZQA-UHFFFAOYSA-J potassium aluminium sulfate dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GNHOJBNSNUXZQA-UHFFFAOYSA-J 0.000 claims 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims 1
- 229910000368 zinc sulfate Inorganic materials 0.000 claims 1
- 239000011686 zinc sulphate Substances 0.000 claims 1
- 235000009529 zinc sulphate Nutrition 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 238000004880 explosion Methods 0.000 abstract description 4
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- 230000000694 effects Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
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- 230000005611 electricity Effects 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000004079 fireproofing Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000011076 safety test Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910001290 LiPF6 Inorganic materials 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
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- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
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- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
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- 238000010998 test method Methods 0.000 description 3
- 239000002937 thermal insulation foam Substances 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 229910013188 LiBOB Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
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- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 1
- 239000006245 Carbon black Super-P Substances 0.000 description 1
- 208000032953 Device battery issue Diseases 0.000 description 1
- 239000005955 Ferric phosphate Substances 0.000 description 1
- DJOWTWWHMWQATC-KYHIUUMWSA-N Karpoxanthin Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C1(O)C(C)(C)CC(O)CC1(C)O)C=CC=C(/C)C=CC2=C(C)CC(O)CC2(C)C DJOWTWWHMWQATC-KYHIUUMWSA-N 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- ZXRRHFSTAFVGOC-UHFFFAOYSA-N [AlH3].[K] Chemical compound [AlH3].[K] ZXRRHFSTAFVGOC-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 239000011258 core-shell material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- VCSZKSHWUBFOOE-UHFFFAOYSA-N dioxidanium;sulfate Chemical compound O.O.OS(O)(=O)=O VCSZKSHWUBFOOE-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001386 lithium phosphate Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 238000009783 overcharge test Methods 0.000 description 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
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- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
- 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
- H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
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- 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
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Abstract
The invention discloses a power battery which comprises a battery shell, a battery accommodated in the battery shell and a battery top cover arranged on the battery shell, wherein a flame-retardant coating is arranged on the battery shell and comprises a flame retardant and a binder. Compared with the prior art, the battery shell of the power battery is coated with the flame-retardant coating, when the power battery is out of control due to overhigh local temperature, the flame-retardant coating can absorb heat quickly and decompose, on one hand, a large amount of heat is absorbed to reduce the temperature of the power battery, and on the other hand, a large amount of non-combustible gas is generated by decomposition to dilute the oxygen concentration and extinguish fire, so that the risks of fire and explosion of the power battery can be avoided, and the safety performance of the power battery and the battery module is remarkably improved.
Description
Technical field
The invention belongs to field of batteries, it is more particularly related to a kind of power electric with desired Safety performance
Pond and its battery modules.
Background technology
It is right as application of the lithium ion battery in fields such as portable electric appts, energy storage, electric automobiles is more and more extensive
The energy density and power density requirements of lithium ion battery also more and more higher.With the energy of the field such as electric automobile, energy storage battery
The raising of metric density and power density, the risk that thermal runaway occurs for lithium ion battery is also increasing, in recent years, lithium ion battery
Fire explosion accident constantly occurs.Therefore, how while lithium ion battery high-energy-density is ensured, lithium-ion electric is ensured again
The security and stability in pond turns into a major challenge of lithium electricity industry.
At present, the method that prior art has revealed that a variety of improvement lithium ion battery safety performances, for example, CN
104779377 A disclose a kind of method for improving ternary battery safety, by ternary material and LiFePO4 or ferric phosphate
The mixing of manganese lithium is used as positive pole, and graphite and lithium titanate are mixed as negative pole, although the material tool being blended in ternary or graphite
There is more preferable heat endurance, but the method sacrifices the energy density of battery.And for example, the A of CN 103779608 are disclosed from electrolysis
The angle of liquid improves the security performance of battery, has used new lithium salts electrolyte LiBOB and some functional form additives, LiBOB
Although having good heat endurance, it is below LiPF6 in the solubility and electrical conductivity of carbonates electrolyte solvent, because
This, can deteriorate the high rate performance of battery.For another example, the A of CN 103840213 disclose a kind of method for improving battery safety,
Be passed through inert gas in the cell housing, battery system by inert gas when destroying can prevent extraneous air enter so as to
Avoid on fire, still, the method has two defects：First, high-nickel material or nickelic ternary material itself can be released at high temperature
Oxygen is put, causes inner pressure of battery to raise second, battery can produce gas when being used under storage or hot conditions, causes housing to break
The leakage of bad and electrolyte, causes potential safety hazard.
In battery modules, when thermal runaway occurs for any one battery abnormal heating, the battery closed on is as heat passes
Lead so that internal temperature to be persistently increased to the concurrent heat of certain temperature out of control, it is chain out of control to ultimately result in a series of battery, this
The main reason for severe fire explosion accident occurs for electrokinetic cell.To solve in battery modules caused by battery abnormal heating
Chain problem out of control, the method used at present mainly add heat insulation foam to prevent the thermal diffusion between battery between battery.But
Limited by coefficient of heat insulation and battery modules length limit, between battery plus the thickness of heat insulation foam can not be blocked up, cause every
Thermal effect is had a greatly reduced quality, and can not prevent the thermal diffusion between battery, and the accident of battery modules Fire explosion is still difficult to avoid that.
In view of this, it is necessory to provide a kind of electrokinetic cell and its battery modules with desired Safety performance.
The content of the invention
It is an object of the invention to：Overcome the shortcomings of existing electrokinetic cell and its battery modules, there is provided one kind has ideal
The electrokinetic cell and its battery modules of security performance.
In order to realize foregoing invention purpose, the invention provides a kind of electrokinetic cell, and it includes battery container, is contained in electricity
Battery in the housing of pond, and the battery cap being installed on battery container, wherein, battery container is provided with flame retardant coating, resistance
Combustion coating includes fire retardant and binding agent.
As electrokinetic cell of the present invention one kind improve, the fire retardant account for flame retardant coating gross weight 80%~
99.9%, binding agent accounts for the 0.1%~20% of flame retardant coating gross weight.
One kind as electrokinetic cell of the present invention is improved, and the flame retardant coating also contains auxiliary agent, and it is total that auxiliary agent accounts for flame retardant coating
The 0%~5% of weight.
One kind as electrokinetic cell of the present invention is improved, and the auxiliary agent is selected from methylcellulose, carboxymethyl cellulose, hydroxyl second
One or more in base cellulose, sodium carboxymethylcellulose, polyacrylate.
One kind as electrokinetic cell of the present invention is improved, and it is polynary common that the binding agent is selected from butadiene-styrene rubber (SBR), acrylonitrile
Polymers (LA133), Kynoar (PVDF), poly- difluoroethylene, pure-acrylic emulsion, silicone acrylic emulsion, styrene-acrylic emulsion, acrylate and vinyl acetate emulsion,
One or more in epoxy resin.
One kind as electrokinetic cell of the present invention is improved, and the fire retardant is selected from heat absorbing type fire retardant, aerogenesis type fire retardant.
One kind as electrokinetic cell of the present invention is improved, and the heat absorbing type fire retardant is selected from aluminium hydroxide, magnesium hydroxide, ten
Sulfate dihydrate aluminium potassium, washing soda, sal glauberi, borax decahydrate, cupric sulfate pentahydrate, ferrous sulfate heptahydrate, seven water sulfuric acid
One or more in zinc, epsom salt, calcium sulphate dihydrate；The aerogenesis type fire retardant be selected from melamine cyanurate,
Melamine, melamine polyphosphate, aluminium triphosphate, melamine urea-formaldehyde resin, APP, ammonium oxalate, bicarbonate
Salt, ammonium borate, urea, guanidine carbonate, ammonium chloride, chlorinated paraffin, decabromodiphenyl oxide, HBCD, hexabromo ring hexadecane, season
One or more in penta tetrol, sorbierite, mannitol, Firebrake ZB.
As electrokinetic cell of the present invention one kind improve, the flame retardant coating coated on battery container inner surface and/or
Outer surface.When flame retardant coating is coated on the inner surface of battery container, internal temperature of battery can be absorbed when battery is out of control, simultaneously
Caused gas can dilute the oxygen concentration of inside battery release, reach the fire-retardant purpose that cools.Flame retardant coating is coated on battery
During the outer surface of housing, during battery thermal runaway, battery surface temperature quickly raises, coated on the flame retardant coating on the outside of battery container
Due to being in close contact, energy fast endothermic reaction produces a large amount of non-flammable compressive gases, reaches insulation and fire-retardant purpose.When flame retardant coating is same
When surfaces externally and internally coated on battery container when, the coating thickness of the coating thickness of outer surface more preferably greater than inner surface.So set
Put, by improving the dosage of flame retardant coating, while from inside battery and outside heat absorption and fire-retardant.
One kind as electrokinetic cell of the present invention is improved, and the flame retardant coating is coated on four side external surfaces of battery container
Two larger side external surfaces of middle relative area.Contact area is big, and applying fire retardant is more, and reaction is fast, the non-flammable gases of release
More.
One kind as electrokinetic cell of the present invention is improved, and the thickness of the flame retardant coating is 0.1~10mm, and this thickness is fitted
In, it is suitably applied in power battery module；The granular size of flame retardant coating is 0.1~100 μm, and this granular size is adapted to stir material
And coating, contact area are big；The porosity of flame retardant coating is 1%~50%, and this porosity can ensure that fire-retardant in flame retardant coating
Agent is relatively compact, and contact is close, can fast reaction heat absorption.
One kind as electrokinetic cell of the present invention is improved, and the thickness of the flame retardant coating is 0.2~3mm, flame retardant coating
Granular size is 0.1~10 μm, and the porosity of flame retardant coating is 1%~10%.
In order to realize foregoing invention purpose, present invention also offers a kind of battery modules, battery modules include multiple foregoing
Electrokinetic cell.
Relative to prior art, electrokinetic cell of the present invention has advantages below：
It is electric when electrokinetic cell is because abnormal heated or when being influenceed to occur thermal runaway by extreme condition (pierce through, overcharge, extrude)
The temperature on inside pond and surface raises rapidly, and the flame retardant coating being arranged on battery container is direct because being in close contact with battery container
Heated, temperature can be climbed to the operative temperature of fire retardant, and fire retardant meeting fast reaction heat absorption or decomposition produce a large amount of non-ignitable
Property gas：On the one hand, flame retardant coating absorbs amount of heat to reduce the temperature of dead battery, avoids adjacent cell persistently by high temperature
Scorch and out of control, thermal diffusion when can effectively suppress any of battery modules battery abnormal heating to adjacent cell, prevent electricity
The risk of chain thermal runaway occurs because of external high temperature heat conduction for pond, improves the security performance of battery modules；On the other hand, fire retardant
The oxygen concentration of battery ambient can be diluted, prevent batteries caught fire by decomposing a large amount of non-flammable gases of generation, therefore, can avoid battery mould
Group is on fire, the risk of blast, improves the security performance of electrokinetic cell and battery modules.
Brief description of the drawings
With reference to the accompanying drawings and detailed description, electrokinetic cell of the present invention and its battery modules are described in detail.
Fig. 1 is the schematic diagram of an embodiment of electrokinetic cell of the present invention, wherein, flame retardant coating is coated on battery container
The larger inner surface of two relative areas.
Fig. 2 is the schematic diagram of the further embodiment of electrokinetic cell of the present invention, wherein, flame retardant coating is coated on battery case
The larger outer surface of two relative areas of body.
Fig. 3 is the schematic diagram of the yet another embodiment of electrokinetic cell of the present invention, wherein, flame retardant coating is coated on battery case
The whole outer surface of body.
Fig. 4 is the structural representation of battery modules of the present invention.
The reference table of comparisons：
1- battery containers；2- batteries；3- flame retardant coatings；4- connection sheets (Busbar).
Embodiment
In order that goal of the invention, technical scheme and the advantageous effects of the present invention become apparent from, below in conjunction with accompanying drawing and
Embodiment, the present invention is described in more detail.It should be appreciated that the embodiment described in this specification is just for the sake of solution
The present invention is released, being not intended to limit the present invention, the formula of embodiment, ratio etc. can suit measures to local conditions to make a choice and have no result
Substantial effect.
Embodiment 1
Electrokinetic cell is prepared using following steps：
1) electrolyte is prepared：It is 50 to take mass ratio：50 EC：Mixing nonaqueous solvents of the PC as electrolyte, add hexafluoro
Lithium phosphate (LiPF6), form the electrolyte that lithium hexafluoro phosphate (LiPF6) concentration is 1mol/L；
2) negative plate is prepared：Make 97wt% graphite as negative active core-shell material, 2wt% Kynoar (PVDF)
It is added to for binding agent and 1wt% carbon black as conductive agent in 1-METHYLPYRROLIDONE (NMP) solvent and mixes, is uniformly divided
Scattered black cathode size.It is 8 μm that black cathode size is coated in into thickness by way of roller coat, intaglio printing or spraying
The positive and negative of Cu paper tinsels, form the negative electrode active material layer that thickness is 60 μm after drying respectively on two sides, you can obtain electrokinetic cell
Negative plate.
3) positive plate is prepared：Using 96wt% NCM ternary materials as positive electrode active materials, 2wt% Kynoar
(PVDF) it is added to as binding agent and 2wt% Super-P as conductive agent in 1-METHYLPYRROLIDONE (NMP) solvent and mixes
Close, obtain dispersed black anode sizing agent.Black anode sizing agent is coated onto by way of roller coat, intaglio printing or spraying
Thickness is 12 μm of Al collectors two sides, forms the positive electrode active material layer that thickness is 60 μm after drying respectively on two sides, i.e.,
Obtain the positive plate of electrokinetic cell.
4) flame retardant coating is prepared：Using melamine as heat absorption fire proofing, according to melamine：SBR：CMC matter
Measure percentage 97%：2%：1% ratio mixing, using water as solvent, aluminum production cell housing is coated in after stirring into slurry
Whole outer surface, natural air drying, obtains the flame retardant coating that thickness is 2mm at room temperature.
5) electrokinetic cell is made：By the positive plate of above-mentioned preparation, negative plate by cold pressing, trimming, cut-parts, slitting, welding electrode
The processes such as ear, it is 4.2mm to be fabricated to thickness by winding process together with polyethylene separators (PE), width 34mm, length
For 82mm lithium rechargeable battery, toast 10 hours, injection electrolyte, after standing 24 hours, use in lower 75 DEG C of vacuum
Then 0.1C (160mA) constant current charge drops to 0.05C (80mA), so to 4.2V with 4.2V constant-voltage charges to electric current
2.8V is discharged to 0.1C (160mA) constant current afterwards, is repeated 2 times discharge and recharge, finally again with 0.1C (160mA) constant electricity
Battery is charged to 3.82V by stream, completes the making of electrokinetic cell.
The electrokinetic cell of the embodiment of the present invention 2~13, the electrokinetic cell of comparative example 1~2 and the electrokinetic cell of the embodiment of the present invention 1
Prepare essentially identical, the difference is that only the fire retardant used in the preparation of flame retardant coating, the parameter of flame retardant coating and battery
Housing parameter, it is specific as shown in table 1.
The electrokinetic cell of 1 embodiment of table 1~13 and the electrokinetic cell parameter of comparative example 1~2
Electrokinetic cell safety test standard
The testing standard of the electrokinetic cell of embodiment 1~13 and the electrokinetic cell of comparative example 1~2 is as follows：
1. according to《GBT31485-2015 power accumulator safety requirements used for electric vehicle and test method》In
6.3.8 the lancing test of bar：
(1) under the conditions of 20 ± 5 DEG C, battery is expired with 1C electric currents and is charged to 4.2V；
(2) Φ 6mm~Φ 10mm high temperature resistant draw point is used, with 25 ± 5mm/s speed, from perpendicular to battery pole plates direction
3 batteries are sequentially passed through, are preferably stopped in the battery close to the geometric center in face of piercing, draw point through position；
(3) 1h is observed；
(4) battery should not be on fire, does not explode.
2. according to《GBT31485-2015 power accumulator safety requirements used for electric vehicle and test method》In
6.3.3 bar overcharges test：
(1) under the conditions of 20 ± 5 DEG C, battery is expired with 1C electric currents and is charged to 4.2V；
(2) battery is charged with 1C constant current, until reach its end of charge voltage 1.5 times (6.3V) or
Charging interval stops charging after reaching 1h；
(3) 1h is observed；
(4) battery should not be on fire, does not explode.
3. according to《GBT31485-2015 power accumulator safety requirements used for electric vehicle and test method》In
6.3.7 the extruding test of bar：
(1) under the conditions of 20 ± 5 DEG C, battery is expired with 1C electric currents and is charged to 4.2V；
(2) with radius 75mm semicylinder stripper plate, (length of semicylinder, which is more than, is squeezed the size but not of piezoelectric battery
More than 1m), pressed with 5 ± 1mm/s speed perpendicular to battery orientation；
(3) battery module deflection reach 30% or extruding force reach 1000 times of battery module weight after stop extruding,
Keep 10min；
(4) 1h is observed, battery should not be on fire, does not explode.
Battery modules safety test result
The electrokinetic cell of embodiment 1~13 and the power battery pack of comparative example 1~2 are dressed up to 1P5S simple battery modules, and
Following specific test is carried out with reference to the national testing standard of above-mentioned items, and records each battery modules and passes through every national testing standard
Percent of pass：
(1) lancing test：3 batteries are pierced through according to national standard 6mm pins, 25mm/s speed, limit the gap between battery
For 5mm, coating layer thickness is inadequate or is filled without coating using heat insulation foam, and monitoring battery surface temperature and record video, checking are each
The drift bolt effect of individual group.
(2) test is overcharged：Battery is charged with 1C constant current, until reaching 1.5 times of its end of charge voltage
(6.3V) or charging interval stop charging after reaching 1h, observe 1h, monitor cell voltage and temperature, record video, and checking is each
The squeezing effect of individual group.
(3) extruding test：With radius 75mm semicylinder stripper plate with 5 ± 1mm/s speed perpendicular to accumulator pole
Plate pressuring direction (the big face of battery just squeeze), when battery tension reach 0V or deflection reach 30% or extruding reach 200kN after
Stop extruding, observe 1h, monitor cell voltage and temperature, record video, verify the squeezing effect of each group.
Shown in the safety test result table 2 finally given.
The battery modules safety test result of table 2
| Parameter | Drift bolt tests percent of pass | Overcharge test percent of pass | Extruding test percent of pass |
| Embodiment 1 | 10/10 | 10/10 | 9/10 |
| Embodiment 2 | 8/10 | 10/10 | 9/10 |
| Embodiment 3 | 9/10 | 10/10 | 10/10 |
| Embodiment 4 | 7/10 | 10/10 | 8/10 |
| Embodiment 5 | 8/10 | 10/10 | 8/10 |
| Embodiment 6 | 7/10 | 9/10 | 7/10 |
| Embodiment 7 | 8/10 | 9/10 | 8/10 |
| Embodiment 8 | 6/10 | 9/10 | 8/10 |
| Embodiment 9 | 7/10 | 9/10 | 9/10 |
| Embodiment 10 | 7/10 | 8/10 | 8/10 |
| Embodiment 11 | 6/10 | 7/10 | 6/10 |
| Embodiment 12 | 5/10 | 7/10 | 5/10 |
| Embodiment 13 | 9/10 | 9/10 | 9/10 |
| Comparative example 1 | 0/10 | 3/10 | 1/10 |
| Comparative example 2 | 1/10 | 5/10 | 3/10 |
The percent of pass for can be seen that the drift bolt of embodiment 1~13 from the test result of table 2, overcharging and extrude test is obvious
Higher than the drift bolt of comparative example 1 and 2, overcharge and extrude test percent of pass because：In the battery modules of embodiment 1~13, electricity
Pond hull outside or internal coat have flame retardant coating, battery drift bolt, overcharge popped with compression failure explosion-proof valve when, battery
Temperature rises therewith.On the one hand, flame retardant coating can quickly absorb heat so as to reduce the temperature of battery modules internal failure battery
Degree, it is therefore prevented that the thermal diffusion between battery；On the other hand, flame retardant coating react at high temperature decomposition produce a large amount of non-flammable gases can
Suppress batteries caught fire burning, so as to effectively suppress the burning thermal diffusion out of control between battery of battery.Therefore, embodiment 1~
The security performance of 13 battery modules is substantially better than the battery modules of comparative example 1 and 2.
In embodiment 1~6, flame retardant coating is coated in the whole outer surface of battery container, because case surface product is larger, because
The amount that this adds fire proofing is also very big, and when battery failure, the temperature of housing can rise quickly, coated in the fire-retardant of its surface
By heated fast, fast reaction absorbs heat, decomposes the oxygen concentration for producing a large amount of non-flammable gases dilution battery ambients coating,
Have the function that to prevent batteries caught fire from burning, therefore the percent of pass that battery is extremely tested is maximum, security highest.In addition, compare
Embodiment 1~3 understands that embodiment 1~3 is substantially better than embodiment 4~6, mainly due to aerogenesis type fire retardant with embodiment 4~6
During being thermally decomposed, on the one hand caused gas can take away partial heat, and on the other hand the gas is non-flame properties, can
To dilute the concentration of the oxygen of battery ambient and fuel gas, collective effect, which reaches, to be reduced battery surface temperature and prevents battery from firing
The purpose of burning.Heat absorbing type fire retardant reduces the effect of the temperature of battery mainly by battery surface heat is absorbed, fire-retardant without aerogenesis
The so obvious flame retardant effect of agent.
Contrasted with embodiment 1~3, embodiment 7~9 keeps other conditions constant, only flame retardant coating thickness by original
2mm is thinned to 1mm, and electrokinetic cell has declined in the percent of pass that extreme condition is tested, and reason is that the amount of fire proofing reduces one
Half, absorbed heat is reduced when electrokinetic cell fails, and the non-flammable gases of release are reduced, electrokinetic cell occur thermal diffusion and
The probability of fire burning is increased slightly compared with embodiment 1~3.
Contrasted with embodiment 7, embodiment 10~12 keeps coating layer thickness 1mm constant, and flame retardant coating is coated in into different positions
Put, embodiment 10 coats the thick flame retardant coatings of 1mm in battery container inner surface, and fire retardant is placed on naked in battery by embodiment 11
Between battery and top cover, flame retardant coating is coated in the top of battery cap by embodiment 12.From the point of view of test result, embodiment 7
Fire proofing is coated in the best results of battery container outer surface, next to that embodiment 10 is coated in battery container inner surface, resistance
The oxygen concentration that combustible material is absorbed heat from inside battery, dilution inside battery is discharged due to ternary material pyrolytic, but exist
Oxygen concentration around outside batteries cannot rapid dilution situation；Embodiment 11 and 12 is empty by inside battery cap and top
Between limitation, the amount that fire retardant can be placed is less, thus improve battery modules safety effect be not particularly evident.Therefore, when
When flame retardant coating is coated on the diverse location of housing, the surface area of relevant position is bigger, and it is more to coat the amount of flame retardant coating, resistance
Fuel efficiency fruit is better, and the security of battery is higher.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, the invention is not limited in embodiment disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.In addition, although this specification
In used some specific terms, but these terms are merely for convenience of description, do not form any restrictions to the present invention.
Claims (12)
1. a kind of electrokinetic cell, including battery container, the battery that is contained in battery container, and be installed on battery container
Battery cap, it is characterised in that：The battery container is provided with flame retardant coating, and flame retardant coating includes fire retardant and binding agent.
2. electrokinetic cell according to claim 1, it is characterised in that：The fire retardant accounts for the 80% of flame retardant coating gross weight
~99.9%, binding agent accounts for the 0.1%~20% of flame retardant coating gross weight.
3. electrokinetic cell according to claim 2, it is characterised in that：The flame retardant coating also contains auxiliary agent, and auxiliary agent accounts for resistance
Fire the 0%~5% of total coating weight.
4. electrokinetic cell according to claim 3, it is characterised in that：It is fine that the auxiliary agent is selected from methylcellulose, carboxymethyl
Tie up the one or more in element, hydroxyethyl cellulose, sodium carboxymethylcellulose, polyacrylate.
5. electrokinetic cell according to claim 1, it is characterised in that：It is more that the binding agent is selected from butadiene-styrene rubber, acrylonitrile
In membered copolymer, Kynoar, poly- difluoroethylene, pure-acrylic emulsion, silicone acrylic emulsion, styrene-acrylic emulsion, acrylate and vinyl acetate emulsion, epoxy resin
One or more.
6. electrokinetic cell according to claim 1, it is characterised in that：The fire retardant is selected from heat absorbing type fire retardant, aerogenesis
Type fire retardant.
7. electrokinetic cell according to claim 6, it is characterised in that：The heat absorbing type fire retardant is selected from aluminium hydroxide, hydrogen
Magnesia, Potassium aluminum sulfate dodecahydrate, washing soda, sal glauberi, borax decahydrate, cupric sulfate pentahydrate, ferrous sulfate heptahydrate,
One or more in white vitriol, epsom salt, calcium sulphate dihydrate；The aerogenesis type fire retardant is selected from melamine cyanogen
Lithate, melamine, melamine polyphosphate, aluminium triphosphate, melamine urea-formaldehyde resin, APP, ammonium oxalate,
Bicarbonate, ammonium borate, urea, guanidine carbonate, ammonium chloride, chlorinated paraffin, decabromodiphenyl oxide, HBCD, hexabromo ring ten
One or more in six alkane, pentaerythrite, sorbierite, mannitol, Firebrake ZB.
8. electrokinetic cell according to claim 1, it is characterised in that：The flame retardant coating is coated on the interior table of battery container
Face and/or outer surface.
9. electrokinetic cell according to claim 8, it is characterised in that：The flame retardant coating is coated on four of battery container
Two larger side external surfaces of relative area in side external surface.
10. electrokinetic cell according to claim 1, it is characterised in that：The thickness of the flame retardant coating is 0.1~10mm,
The granular size of flame retardant coating is 0.1~100 μm, and the porosity of flame retardant coating is 1%~50%.
11. electrokinetic cell according to claim 1, it is characterised in that：The thickness of the flame retardant coating is 0.2~3mm, resistance
The granular size for firing coating is 0.1~10 μm, and the porosity of flame retardant coating is 1%~10%.
A kind of 12. battery modules, it is characterised in that：The battery modules are included any one of multiple claims 1~11
Electrokinetic cell.
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| CN201610836507.XA CN107845742A (en) | 2016-09-21 | 2016-09-21 | Power battery and battery module thereof |
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|---|---|---|---|
| CN201610836507.XA CN107845742A (en) | 2016-09-21 | 2016-09-21 | Power battery and battery module thereof |
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| CN112234245A (en) * | 2020-10-20 | 2021-01-15 | 天津市捷威动力工业有限公司 | Internal heat insulation lithium ion battery |
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| CN110739413A (en) * | 2019-09-30 | 2020-01-31 | 深圳君耀投资合伙企业(有限合伙) | flame-retardant heat-insulation battery and battery module |
| CN112751075A (en) * | 2019-10-31 | 2021-05-04 | 苏州微木智能系统有限公司 | Lithium ion battery and preparation method thereof |
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| CN112234245A (en) * | 2020-10-20 | 2021-01-15 | 天津市捷威动力工业有限公司 | Internal heat insulation lithium ion battery |
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