WO2016167602A1 - 전해액 누액 감지용 와셔 및 이를 포함하는 이차 전지 - Google Patents
전해액 누액 감지용 와셔 및 이를 포함하는 이차 전지 Download PDFInfo
- Publication number
- WO2016167602A1 WO2016167602A1 PCT/KR2016/003949 KR2016003949W WO2016167602A1 WO 2016167602 A1 WO2016167602 A1 WO 2016167602A1 KR 2016003949 W KR2016003949 W KR 2016003949W WO 2016167602 A1 WO2016167602 A1 WO 2016167602A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- washer
- secondary battery
- polymer resin
- electrolyte
- present
- Prior art date
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 45
- 230000008859 change Effects 0.000 claims abstract description 20
- 239000002952 polymeric resin Substances 0.000 claims description 43
- 229920003002 synthetic resin Polymers 0.000 claims description 37
- 239000010410 layer Substances 0.000 claims description 31
- 239000000853 adhesive Substances 0.000 claims description 22
- 230000001070 adhesive effect Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 22
- 239000012790 adhesive layer Substances 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 15
- -1 polyethylene terephthalate Polymers 0.000 claims description 15
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims description 8
- 229920000515 polycarbonate Polymers 0.000 claims description 8
- 239000004417 polycarbonate Substances 0.000 claims description 8
- ZPLCXHWYPWVJDL-UHFFFAOYSA-N 4-[(4-hydroxyphenyl)methyl]-1,3-oxazolidin-2-one Chemical compound C1=CC(O)=CC=C1CC1NC(=O)OC1 ZPLCXHWYPWVJDL-UHFFFAOYSA-N 0.000 claims description 6
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003522 acrylic cement Substances 0.000 claims description 6
- 229920001903 high density polyethylene Polymers 0.000 claims description 6
- 239000004700 high-density polyethylene Substances 0.000 claims description 6
- 229920001684 low density polyethylene Polymers 0.000 claims description 6
- 239000004702 low-density polyethylene Substances 0.000 claims description 6
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 claims description 6
- 229940012189 methyl orange Drugs 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- BELBBZDIHDAJOR-UHFFFAOYSA-N Phenolsulfonephthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2S(=O)(=O)O1 BELBBZDIHDAJOR-UHFFFAOYSA-N 0.000 claims description 4
- LDKDGDIWEUUXSH-UHFFFAOYSA-N Thymophthalein Chemical compound C1=C(O)C(C(C)C)=CC(C2(C3=CC=CC=C3C(=O)O2)C=2C(=CC(O)=C(C(C)C)C=2)C)=C1C LDKDGDIWEUUXSH-UHFFFAOYSA-N 0.000 claims description 4
- UDSAIICHUKSCKT-UHFFFAOYSA-N bromophenol blue Chemical compound C1=C(Br)C(O)=C(Br)C=C1C1(C=2C=C(Br)C(O)=C(Br)C=2)C2=CC=CC=C2S(=O)(=O)O1 UDSAIICHUKSCKT-UHFFFAOYSA-N 0.000 claims description 4
- KHLVKKOJDHCJMG-QDBORUFSSA-L indigo carmine Chemical compound [Na+].[Na+].N/1C2=CC=C(S([O-])(=O)=O)C=C2C(=O)C\1=C1/NC2=CC=C(S(=O)(=O)[O-])C=C2C1=O KHLVKKOJDHCJMG-QDBORUFSSA-L 0.000 claims description 4
- 229960003988 indigo carmine Drugs 0.000 claims description 4
- 235000012738 indigotine Nutrition 0.000 claims description 4
- 239000004179 indigotine Substances 0.000 claims description 4
- CEQFOVLGLXCDCX-WUKNDPDISA-N methyl red Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1C(O)=O CEQFOVLGLXCDCX-WUKNDPDISA-N 0.000 claims description 4
- 229960003531 phenolsulfonphthalein Drugs 0.000 claims description 4
- 229920001083 polybutene Polymers 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 4
- PRZSXZWFJHEZBJ-UHFFFAOYSA-N thymol blue Chemical compound C1=C(O)C(C(C)C)=CC(C2(C3=CC=CC=C3S(=O)(=O)O2)C=2C(=CC(O)=C(C(C)C)C=2)C)=C1C PRZSXZWFJHEZBJ-UHFFFAOYSA-N 0.000 claims description 4
- VADKRMSMGWJZCF-UHFFFAOYSA-N 2-bromophenol Chemical compound OC1=CC=CC=C1Br VADKRMSMGWJZCF-UHFFFAOYSA-N 0.000 claims description 3
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical group OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 claims description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- XJRPTMORGOIMMI-UHFFFAOYSA-N ethyl 2-amino-4-(trifluoromethyl)-1,3-thiazole-5-carboxylate Chemical compound CCOC(=O)C=1SC(N)=NC=1C(F)(F)F XJRPTMORGOIMMI-UHFFFAOYSA-N 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 229920000306 polymethylpentene Polymers 0.000 claims description 3
- 239000011116 polymethylpentene Substances 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 229920005672 polyolefin resin Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- 239000011574 phosphorus Substances 0.000 claims 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 13
- 239000008151 electrolyte solution Substances 0.000 description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 8
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 6
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 229910013870 LiPF 6 Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 2
- CUXGDKOCSSIRKK-UHFFFAOYSA-N 7-methyloctyl prop-2-enoate Chemical compound CC(C)CCCCCCOC(=O)C=C CUXGDKOCSSIRKK-UHFFFAOYSA-N 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 229920001407 Modal (textile) Polymers 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229910017008 AsF 6 Inorganic materials 0.000 description 1
- 229910020366 ClO 4 Inorganic materials 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920006222 acrylic ester polymer Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4228—Leak testing of cells or batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
-
- 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
- H01M50/147—Lids or covers
-
- 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
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/668—Means for preventing spilling of liquid or electrolyte, e.g. when the battery is tilted or turned over
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a washer for a secondary battery and a secondary battery having the same. More specifically, the present invention relates to a leaky washer for detecting leakage and a secondary battery including the same, so that the leakage of the electrolyte solution can be easily confirmed from the outside of the battery.
- a secondary battery is composed of an electrode assembly composed of a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode in a laminated or wound state in a battery case of a metal can or laminate sheet, and then injecting or impregnating an electrolyte solution.
- Recently developed lithium secondary batteries are widely used in electronic devices such as cellular phones, notebook computers, electric vehicles.
- the secondary battery is classified into a liquid electrolyte battery and a polymer electrolyte battery according to the type of electrolyte, and a battery using a liquid electrolyte is generally called a lithium ion battery, and a battery using a polymer electrolyte is called a lithium polymer battery.
- secondary batteries are manufactured in various shapes, and typical shapes include cylindrical, square, and pouch types.
- a secondary battery in general, includes a can, which is a battery case, an electrode assembly accommodated inside the can, a cap assembly coupled to an upper opening of the can, and a lead and an upper portion of the cap plate for electrically connecting a negative or positive terminal to a protection circuit. It is configured to include a washer coupled to. However, since the washer is located above the cap plate, the electrolyte injection hole is covered by the washer. Accordingly, there is an inconvenience in that the washer must be removed to check whether the electrolyte is leaked. In addition, when a small amount of electrolyte leaks, such leakage from the outside of the battery may not be easily confirmed with the naked eye, which may cause leakage of the electrolyte.
- an object of the present invention is to provide a washer and a secondary battery including the same, the structure of which has been devised to solve the above problems, so that the leakage of the electrolyte can be quickly confirmed. Also, it will be readily appreciated that other objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.
- the present invention provides a washer for a secondary battery for solving the above technical problem.
- the first aspect of the present invention is for the washer, the washer is a polymer resin film layer; It includes; the adhesive layer formed on one side of the film layer.
- the adhesive layer includes an adhesive component and an indicator component, and the color is changed by contact with an electrolyte solution.
- the third aspect of the present invention is any one of the first to second aspects, wherein the polymer resin film layer is a transparent material or a translucent material that can be observed with the naked eye from the color change of the adhesive layer.
- the fourth aspect of the present invention is any one of the first to third aspects, wherein the polymer resin film layer is a polyolefin polymer resin, acrylic polymer resin, polycarbonate polymer resin, vinyl polymer resin, ABS (Acrylonitrile, Butadiene , Styrene) resin, polystyrene-based polymer resin, polycarbonate-based polymer resin, tetrafluoroethylene, Teflon, polybutyl terephthalate and polyethylene terephthalate selected from the group consisting of one or two or more.
- the polymer resin film layer is a polyolefin polymer resin, acrylic polymer resin, polycarbonate polymer resin, vinyl polymer resin, ABS (Acrylonitrile, Butadiene , Styrene) resin, polystyrene-based polymer resin, polycarbonate-based polymer resin, tetrafluoroethylene, Teflon, polybutyl terephthalate and polyethylene terephthalate selected from
- the polyolefin resin is low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), ultra high molecular weight polyethylene (UHMWPE) , At least one selected from the group consisting of polypropylene, polybutene, polymethylpentene, and copolymers thereof.
- LDPE low density polyethylene
- LLDPE linear low density polyethylene
- HDPE high density polyethylene
- UHMWPE ultra high molecular weight polyethylene
- the adhesive component is one or more selected from the group consisting of an acrylic adhesive compound, a rubber-based adhesive compound, a silicone-based adhesive compound and a vinyl ether-based adhesive compound It is to include.
- the acrylic adhesive compound is a single aggregate or copolymer of acrylic ester monomers such as butyl acrylate, isononyl acrylate, and 2-ethylhexyl acrylate, or such acrylic acid. It is a copolymer of ester monomer and other monomers, such as acrylic acid, 2-hydroxyethyl acrylate, and vinyl acetate.
- the indicator component is thymol blue (Thymol blue), bromophenol blue (Bromophenol blue), methyl orange (broken phenol) Bromophenol green, methyl red, bromocresol purple, bromothymol blue (BTB), phenolphthalein, thymolphthalein, indigo carmine ), And one or more selected from the group consisting of phenol red.
- the present invention also relates to a secondary battery.
- a ninth aspect of the present invention relates to the secondary battery, wherein the battery includes an electrode assembly having a cathode / membrane / cathode structure in a metal can, and an upper end of a cap assembly mounted on an open top of the metal can in which the electrode assembly is embedded.
- a secondary battery equipped with a washer wherein the washer has the above-mentioned characteristics.
- a tenth aspect of the present invention is that in the ninth aspect, the washer is fixed to the top surface of the cap assembly by adhesive or mechanical coupling.
- the thickness of the washer is in the range of 0.05 to 2 mm.
- the leakage of the electrolyte may be easily confirmed with the naked eye through the color change of the washer.
- FIG. 1A schematically illustrates a configuration of a washer according to one specific embodiment of the present invention.
- FIG. 1B is a cross-sectional view of the AA ′ portion of FIG. 1A.
- 5a and 5b are photographs confirming the corrosion degree of the battery after leaving the secondary battery prepared in Examples and Comparative Examples of the present invention for several days in a high temperature and high humidity environment.
- 6A and 6B are photographs showing the results of inducing the color change of the washer after intentionally leaking the electrolyte solution for the secondary batteries manufactured in Examples and Comparative Examples of the present invention.
- the present invention relates to a secondary battery washer including a polymer resin film layer and a pressure-sensitive adhesive layer formed on one side of the film layer, and a secondary battery including the washer.
- FIG. 1A and 1B schematically show the configuration of a washer according to one specific embodiment of the present invention.
- FIG. 1B shows the layered structure of the washer as a sectional view taken along the line AA ′ of FIG. 1A.
- the washer mounted on the cap assembly of the secondary battery basically serves to supplement the electrical insulation state, to protect the battery cell from external shock, and to compensate for the mechanical strength of the members mounted on the top of the battery cell. Play a role.
- the washer according to the present invention includes an indicator component in the pressure-sensitive adhesive layer, and in addition to the basic role of the washer, when the leakage of the electrolyte occurs, the color of the pressure-sensitive adhesive layer is changed by the electrolyte, so that leakage of the electrolyte is easily visually observed from the outside. There is a characteristic which can be confirmed.
- the washer 10 includes a polymer resin film layer 11; And an adhesive layer 12 formed on one side of the film layer.
- the adhesive layer includes an adhesive component and an indicator component, and the indicator component may change color due to contact with the electrolyte solution to detect leakage of the electrolyte solution.
- the transparent resin or translucent material is used in the polymer resin film layer so that the color change of the adhesive layer can be easily observed with the naked eye.
- the polymer resin film layer comprises a polymer resin
- the polymer resin is not particularly limited, polyolefin-based polymer resin, acrylic polymer resin, polycarbonate-based polymer resin, vinyl polymer resin, ABS ( Acrylonitrile, Butadiene, Styrene) resins, polystyrene-based polymer resins, polycarbonate-based polymer resins, tetrafluoroethylene, Teflon, polybutyl terephthalate and polyethylene terephthalate may be included at least one.
- polystyrene-based polymer resin examples include, but are not limited to, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), ultra high molecular weight polyethylene (UHMWPE), polypropylene, polybutene, polymethylpentene, and the like. Copolymers and the like.
- the polymer resin film layer includes one, or two or more selected from the group consisting of polypropylene, polycarbonate-based polymer resin, polyethylene terephthalate.
- the method for producing the polymer resin film layer is not particularly limited, and for example, the polymer resin and the additive selected above may be sufficiently mixed by any suitable mixing method to prepare a resin composition, and then may be manufactured by film molding the resin composition. .
- molding methods such as the solution casting method (solution casting method), the melt extrusion method, the calender method, the compression molding method, are mentioned, for example.
- a solution cast method (solution casting method) and a melt extrusion method are preferable.
- the polymer resin film layer may include an unstretched film and / or a stretched film.
- a stretched film it may be a uniaxial stretched film or a biaxially stretched film, and in the case of a biaxially stretched film, it may be either a simultaneous biaxially stretched film or a successive biaxially stretched film.
- the mechanical strength is improved and the film performance is improved.
- the film layer may be subjected to heat treatment (annealing) or the like after the stretching treatment in order to stabilize the optical isotropy or mechanical properties.
- the heat treatment conditions are not particularly limited and may employ any suitable conditions known in the art.
- the adhesive layer includes an adhesive component and an indicator component, and is formed on one side of the polymer resin film layer.
- the adhesive layer serves to help seal the cap assembly and the battery can as well as to fix the washer to the top cap or cap plate which will be described later to fix the position of the washer.
- the adhesive component may include a pressure sensitive adhesive component.
- the pressure-sensitive adhesive component may include an acrylic adhesive compound, a rubber adhesive compound, a silicone adhesive compound, a vinyl ether adhesive compound, and the like, but is not limited thereto. Since the pressure-sensitive adhesive component can be used as the adhesive component, it is advantageous in terms of process efficiency since adhesion can be performed by a simple process of applying a predetermined pressure in bonding the washer to the top cap or the cap plate.
- Non-limiting examples of the acrylic pressure-sensitive adhesive compound is a single aggregate or copolymer of acrylic ester monomers such as (meth) acrylate resin, butyl acrylate, isononyl acrylate, 2-ethylhexyl acrylate, or such acrylic ester And copolymers of other monomers such as acrylic acid, 2-hydroxyethyl acrylate, and vinyl acetate.
- acrylic ester monomers such as (meth) acrylate resin, butyl acrylate, isononyl acrylate, 2-ethylhexyl acrylate, or such acrylic ester And copolymers of other monomers such as acrylic acid, 2-hydroxyethyl acrylate, and vinyl acetate.
- the rubber-based adhesive compound may be used synthetic polyisoprene rubber, styrene-isoprene-styrene block copolymer, natural rubber, polyisobutylene, polybutene and the like.
- the (meth) acrylate-based resin is a resin containing a (meth) acrylate-based unit as a main component, as well as a homopolymer resin consisting of (meth) acrylate-based units, as well as (meth) acrylic It is a concept that the copolymer resin copolymerized with the other monomer unit other than the rate type unit, and the blend resin in which another resin was blended with the above-mentioned (meth) acrylate type resin are also included.
- the (meth) acrylate-based unit may be, for example, an alkyl (meth) acrylate-based unit.
- the alkyl (meth) acrylate-based unit means both an alkyl acrylate-based unit and an alkyl methacrylate-based unit
- the alkyl group of the alkyl (meth) acrylate-based unit is preferably 1 to 10 carbon atoms, It is more preferable that it is C1-C4.
- the indicator component may be used as long as it indicates a change in color by contact with the electrolyte, and is not limited to a specific component.
- the indicator component is thymol blue, bromophenol blue, methyl orange, bromophenol green, methyl red (Methyl). red, bromocresol purple, bromothymol blue (BTB), phenolphthalein, thymolphthalein, indigo carmine, phenol red It may be used, but is not particularly limited thereto.
- the electrolyte is Li +, Na +, alkaline metal cation such as K + and PF 6 -, BF 4 -, Cl -, Br -, I -, ClO 4 -, AsF 6 -, CH 3 CO 2 -, CF 3 SO 3 -, N (CF 3 SO 2) 2 -, C (CF 2 SO 2) 3 - salts containing anions such as propylene carbonate (PC), ethylene carbonate (EC), diethyl carbonate (DEC) , Dimethyl carbonate (DMC), dipropyl carbonate (DPC), dimethyl sulfoxide, acetonitrile, dimethoxyethane, diethoxyethane, tetrahydrofuran, N-methyl-2-pyrrolidone (NMP), ethyl methyl carbonate ( EMC), gamma butyrolactone ( ⁇ -butyrolactone) or a mixture thereof, or the like dissolved or dissociated in a weak acidity of
- the adhesive layer may be included in the range of 1% to 10% by weight of the indicator component relative to 100% by weight of the adhesive layer, but is not particularly limited to the above range.
- the indicator component does not significantly fall within the above range, it may not be easy to detect the naked eye because the color change due to electrolyte leakage is not large.
- the indicator component exceeds the above range, on the contrary, the content of the adhesive component may be insufficient, and thus the adhesive force with the top cap or the cap plate may be lowered.
- Figure 6a and 6b is a photograph showing a secondary battery equipped with a washer according to a specific embodiment and comparative example of the present invention after intentionally applying a pressure to the secondary battery so that the electrolyte leaks out of the battery can leak the electrolyte and the electrolyte and By contacting the washer induces a color change of the washer.
- Figure 6a is a photograph showing a secondary battery according to the embodiment, the outermost layer of the washer is made of a polymer resin film of a transparent material, it is easy to see the color change of the adhesive layer containing the indicator component, the comparative example shown in Figure 6b In contrast, no corrosion occurred in the secondary battery.
- the washer may further include a hygroscopic material capable of absorbing the leakage of the electrolyte.
- the hygroscopic material may be composed of one or two or more materials selected from the group consisting of rayon, mixed spinning, polyviscose and polynosic, and preferably, may be made of polynosic.
- the thickness of the washer may vary depending on its material, but is not particularly limited, and may preferably be 0.05 to 2 mm, or 0.1 to 1.5 mm, or 0.1 to 1 mm or 0.1 to 0.8 mm. Since the thickness of the washer affects its mechanical rigidity, elasticity, etc., if the washer thickness is too thin, it does not exhibit the desired mechanical rigidity and can be destroyed by a weak external impact. On the contrary, if the washer thickness is too thick, The increase in size of the battery is remarkable, which is undesirable. Therefore, these points can be considered in combination, and can be appropriately determined within the above range.
- the washers mounted on the cap assembly can be fixed to the site in various ways. For example, during the crimping of the cap assembly, the washers are fixed together or the heat-shrinkable tube mounted on the outside of the can is contracted. A mechanical coupling method for fixing the outer circumferential surface together, an adhesive method for adding an adhesive to the lower surface of the washer or the upper surface of the cap assembly, and the like may be used.
- the metal can may be a cylindrical can or a rectangular can.
- the cap assembly may have a positive electrode protruding terminal connected to an electrode assembly in the center, and the cylindrical can and the cap plate may have a structure of forming a negative electrode terminal in an insulated state from the positive electrode terminal.
- the cap assembly may have a cathode protruding terminal connected to an electrode terminal at a center thereof, and the rectangular can and the cap plate may have a structure of forming an anode terminal in an insulated state from the cathode terminal.
- FIG. 2 is a partial cross-sectional view schematically showing an upper structure of a cylindrical secondary battery according to an embodiment of the present invention.
- the battery 100 inserts an electrode assembly 300 as a power generator inside a can 200, injects electrolyte therein, and inserts it into the top opening of the can 200.
- the cap assembly 400 is mounted and manufactured by inserting the can 200 into the heat shrinkable tube 220 while applying the predetermined heat while the cap assembly 400 is mounted.
- the cap assembly 400 includes a PTC device 420 for preventing overcurrent and a safety vent 430 for lowering internal pressure. Specifically, inside the hermetic gasket 450 mounted on the upper beading portion 210 of the can 200, a PTC element 420 for blocking an overcurrent to the upper cap 410, and the internal pressure drop. Safety vent for 430 is installed in close contact. The upper cap 410 protrudes upward, and serves as a positive electrode terminal by connection with an external circuit. The safety vent 430 has a lower end thereof connected to the anode of the power generator 300 through the current blocking member 440 and the anode lead 310.
- the safety vent 430 is a conductive thin plate, the center of which forms a downward indentation 432, and two notches having different depths are formed in the upper and lower bending portions of the indentation 432. It is.
- the washer 500 is formed of a disc structure as a whole so as to be mounted on the bead 210 while surrounding the top cap 410 of the cap assembly 400, and when the heat shrinkable tube 220 is contracted, The washer 500 is mounted to the cap assembly 400 while surrounding the outer circumferential surface of the washer 500.
- the washer 500 prevents an internal short circuit from occurring while the top cap 410 as the positive terminal contacts the can 200 as the negative terminal.
- the washer 500 is made of an electrolyte hygroscopic material, and serves to absorb the electrolyte when the electrolyte leaks along the interface between the beading portion 210 and the gasket 450 while the cylindrical can is damaged by an external impact. do.
- the secondary battery 101 may include a cap 201 at an upper end thereof, an electrode assembly 301 accommodated in the can 201, and a cap plate 610 coupled to an open upper end of the can 201. It includes a cap assembly 600, and a washer 501 is installed on the upper side of the cap plate 610.
- the can 201 is a substantially rectangular metal material and may itself serve as a terminal.
- the cap assembly 600 includes a cap plate 610, an insulating member 640, a terminal plate 650, and an electrode terminal 620.
- the cap plate 610 is formed of a metal plate having a size and a shape corresponding to the open top of the can 201, and a first terminal opening 611 into which the electrode terminal 620 is inserted is formed at the center thereof.
- the electrode terminal 620 is connected to the first electrode tab 311 or the second electrode tab 321 to serve as a negative electrode terminal.
- a tubular gasket 630 is coupled to the outer surface of the electrode terminal 620 to insulate the electrode terminal 620 from the cap plate 610. Is inserted.
- the cap plate 610 On one side of the cap plate 610, when the pressure inside the battery rises or explodes, a groove having a predetermined depth is formed so as to rupture at a pressure lower than the pressure of the dangerous level and the thickness thereof is thinned or a hole is formed in the thin plate in the hole. A safety vent is formed by welding it.
- the electrolyte injection hole 612 of a predetermined size is formed at the other side, and the electrolyte injection hole 612 is a passage for injecting the electrolyte solution after the cap assembly 600 is assembled to the opening of the can 101, and the metal ball ( 615).
- the insulating member 640 is formed of an insulating material such as the gasket 630 and is coupled to the bottom surface of the cap plate 610.
- a second terminal opening 641 is formed at a position corresponding to the first terminal opening 611 of the cap plate 610.
- the terminal plate 650 is coupled to the lower surface of the insulating member 640, and a third terminal opening 651 into which the electrode terminal 620 is inserted is positioned at a position corresponding to the first terminal opening 611 of the cap plate 610. Formed. Accordingly, the electrode terminal 620 is electrically insulated from the cap plate 610 by the gasket 630 and is electrically connected to the terminal plate 630.
- a top insulator 660 is mounted on an upper surface of the electrode assembly 301 to cover the top of the electrode assembly 301 to electrically insulate the electrode assembly 301 from the cap assembly 600.
- the terminal 620 is connected to an electrode lead wire (not shown) and to an external terminal.
- the cap plate 610 is connected to the first electrode tab 311, so that the cap plate 610 is insulated from the cap plate 610 connected to the electrode terminal 620. Should be. Therefore, a washer 501 is installed above the cap plate 610, that is, between the cap plate 610 and the electrode terminal 620.
- the washer 501 is made of an electrically insulating material and an inhalable material capable of absorbing an electrolyte, and an electrode terminal hole 511 is formed at the center thereof to expose an electrode terminal 620 connected to an electrode lead wire (not shown).
- One side of the washer 501 is a safety vent hole 521 is formed as an exposed portion to expose the safety vent, the other side is formed with an injection hole 531 to open the electrolyte injection hole 612.
- the electrode assembly 300 is configured in such a manner that the positive electrode plate and the negative electrode plate are disposed with the separator interposed therebetween.
- the electrode assembly 300 may have a structure in which one positive electrode plate and one negative electrode plate are wound with separators interposed therebetween, or a plurality of positive electrode plates and a plurality of negative electrode plates may be stacked with separators interposed therebetween.
- the positive electrode plate and the negative electrode plate may be formed as a structure in which an active material slurry is coated on an electrode current collector, respectively, and the slurry is typically formed by stirring a granular active material, an auxiliary conductor, a binder, and a plasticizer in a state where a solvent is added. Can be.
- the electrode assembly 300 there may be a non-coating portion that is not applied to the slurry on the electrode plate, the non-coating portion may be provided with an electrode tab corresponding to each electrode plate. That is, a positive electrode tab (not shown) may be attached to the positive electrode plate of the electrode assembly 200, and a negative electrode tab (not shown) may be attached to the negative electrode plate of the electrode assembly 300, and each of the tabs may be attached to another electrode such as an electrode lead. Is connected to the component.
- the secondary battery according to the present invention may preferably be a lithium secondary battery.
- the present invention also provides a battery pack or a medium-large battery module including the secondary battery as a unit cell.
- the secondary battery according to the present invention can be suitably used for a high output large capacity battery requiring long life and excellent durability, or a medium and large battery module including a plurality of such cells as a unit cell.
- the medium-large battery module may be used as a power source for, for example, an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, an electric motorcycle, and an electric bicycle.
- the battery pack according to the present invention may further include various protection devices for controlling charge and discharge of a secondary battery such as a battery management system (BMS).
- BMS battery management system
- a transparent polyethylene terephthalate film having a thickness of 105 ⁇ m and a cloudiness of 15% or less was prepared in the form.
- an acrylic adhesive (AKITACK® P-Series) and a methyl orange indicator were mixed in an amount of 97: 3 parts by weight, and then coated on the film to a thickness of 100 ⁇ m and dried to prepare a washer with an adhesive layer.
- Ni-plated SPCE cold rolled steel sheet
- An electrode assembly was mounted on the cylindrical can, followed by pouring the electrolyte solution.
- the electrolyte was mixed with LiPF 6 in a concentration of 1 M in an organic solvent in which ethylene carbonate and ethyl propionate were mixed at a 5: 5 weight ratio.
- the washer prepared in Example 1 was appropriately cut to mount and adhere to the top of the bead while covering the top cap of the cap assembly, and to seal the top of the cap assembly while wrapping the outer surface of the can with a heat shrinkable tube to seal the cylindrical secondary battery. Prepared. In the state in which the secondary battery was inverted, the leakage of the electrolyte was generated by applying a pressure of 30 kgf to the inside of the cell, and then the color change of the washer was confirmed.
- Litmus paper was prepared.
- An acrylic adhesive (AKITACK® P-Series) was applied to a surface of one side of the litmus paper in a thickness of 100 ⁇ m and dried to prepare a washer in which an adhesive layer was formed.
- Ni-plated SPCE cold rolled steel sheet
- An electrode assembly was mounted on the cylindrical can, followed by pouring the electrolyte solution.
- the electrolyte was mixed with LiPF 6 in a concentration of 1 M in an organic solvent in which ethylene carbonate and ethyl propionate were mixed at a 5: 5 weight ratio.
- the washer prepared in Comparative Example 1 was appropriately cut to mount and adhere to the top of the bead while covering the top cap of the cap assembly, and to seal the top of the cap assembly while wrapping the outer surface of the can with a heat shrinkable tube to seal the cylindrical secondary battery.
- the washers produced in Example 1 and Comparative Example 1 were prepared, and an electrolyte solution was added dropwise to the pressure-sensitive adhesive layer portion (rear) of each washer.
- the electrolyte solution was a mixture of LiPF 6 in a concentration of 1 M in an organic solvent in which ethylene carbonate and ethyl propionate were mixed at a 5: 5 weight ratio. After the dropping of the electrolyte solution, the color change of the washer was observed at the opposite side portion (front side) of the adhesive layer.
- Figure 4a is a photograph showing that the electrolyte was dropped into the washer prepared in Example 1.
- the electrolyte solution dropped on the adhesive layer portion at the back of the washer was changed to red color in response to the methyl orange, which is a component of the drug contained in the adhesive layer, and the color change was clearly seen through the polymer film layer at the front of the washer.
- Figure 4b is to drop the electrolyte to the washer prepared in Comparative Example 1 to confirm the change. According to FIG. 4B, the color change due to the electrolyte dropped on the adhesive layer portion (rear) was not clearly observed when observed through the litmus paper layer (front).
- reference numerals A and A ' denote front surfaces, and B and B' denote rear surfaces.
- Example 2 The batteries prepared in Example 2 and Comparative Example 2 were left to stand for 7 days at a temperature of 65 ° C. and a relative humidity of 90%, and the degree of battery corrosion was confirmed.
- Figure 5b shows the experimental results for the battery produced in Comparative Example 2. According to FIG. 5B, the litmus paper absorbed moisture, and thus, the battery was left in a high temperature / humidity environment.
- Example 2 a polymer resin film layer was used instead of litmus paper, and the film layer exhibited a water barrier effect, so that corrosion did not occur (see FIG. 5A).
- reference numeral (A) is a photograph showing that color changes before electrolyte leakage, (B), (C) and (D) after electrolyte leakage.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (11)
- 고분자 수지 필름층;상기 고분자 수지 필름층의 일측면에 형성된 점착층;을 포함하며,상기 점착층은 점착 성분 및 지시약 성분이 포함되며 전해액과의 접촉에 의해 색상이 변화되는 것인 이차 전지용 와셔.
- 제1항에 있어서,상기 고분자 수지 필름층은 점착층의 색상 변화가 외부에서 육안으로 관찰될 수 있는 투명 재질 또는 반투명 재질인 것인 이차 전지용 와셔.
- 제2항에 있어서,상기 고분자 수지 필름층은 폴리올레핀계 고분자 수지, 아크릴계 고분자 수지, 폴리카보네이트계 고분자 수지, 비닐계 고분자 수지, ABS(Acrylonitrile, Butadiene, Styrene) 수지, 폴리스티렌계 고분자 수지, 폴리카보네이트계 고분자 수지, 테트라플루오르에틸렌, 테플론, 폴리부틸테레프탈레이트 및 폴리에틸렌테레프탈레이트로 이루어진 군에서 선택된 1종 또는 2종 이상의 고분자 수지를 포함하는 것인 이차 전지용 와셔.
- 제3항에 있어서,상기 폴리올레핀계 수지는 저밀도 폴리에틸렌(LDPE), 선형 저밀도 폴리에틸렌(LLDPE), 고밀도 폴리에틸렌(HDPE), 초고분자량 폴리에틸렌(UHMWPE), 폴리프로필렌, 폴리부텐, 폴리메틸펜텐 및 이들의 코폴리머로 이루어진 군에서 선택된 1종 이상인 이차 전지용 와셔.
- 제1항에 있어서,상기 고분자 수지 필름층은 폴리프로필렌, 폴리카보네이트계 고분자 수지, 폴리에틸렌테레프탈레이트로 이루어진 그룹에서 선택된 1종, 또는 2종 이상이 포함되는 것인, 이차 전지용 와셔.
- 제1항에 있어서,상기 점착 성분은 아크릴계 점착성 화합물, 고무계 점착성 화합물, 실리콘계 점착성 화합물 및 비닐 에테르계 점착성 화합물로 이루어진 군에서 선택된 1종 이상을 포함하는 것인, 이차 전지용 와셔.
- 제6항에 있어서,상기 아크릴계 점착성 화합물은 아크릴산 에스테르계 모노머의 단독 집합체 또는 공중합체, 또는 상기 아크릴산 에스테르계 모노머와 아크릴산, 아크릴산 2-히드록시 에틸, 초산비닐 중 선택된 모노머와의 공중합체를 포함하는 것인, 이차 전지용 와셔.
- 제1항에 있어서,상기 지시약 성분은 티몰 블루(Thymol blue), 브로모페놀 블루(Bromophenol blue), 메틸오렌지(Methyl orange), 브로모페놀 그린(Bromophenol green), 메틸레드(Methyl red), 브로모크레졸 퍼플(Bromocresol purple), 브로모티몰 블루(Bromothylmol blue, BTB), 페놀프탈레인(Phenolphthalein), 티몰페탈레인(Thymolphthalein), 인디고 카민(indigo carmine), 페놀레드(phenol red) 로 이루어진 그룹에서 선택된 1종 이상을 포함하는 것인, 이차 전지용 와셔.
- 양극/분리막/음극 구조의 전극조립체가 금속 캔에 내장되어 있는 이차 전지로서, 전극 조립체가 내장된 금속 캔의 개방 상단에 장착되는 캡 어셈블리의 상단에 와셔(washer)가 탑재되어 있으며, 상기 와셔는 제 1 항에 따른 와셔를 포함하는 것을 특징으로 하는 이차 전지.
- 제9항에 있어서,상기 와셔는 점착 방식 또는 기계적 결합 방식으로 캡 어셈블리의 상단면에 고정되는 것을 특징으로 하는 이차 전지.
- 제9항에 있어서,상기 와셔의 두께는 0.05 내지 2mm인 것인, 이차 전지.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680017730.XA CN107431253B (zh) | 2015-04-15 | 2016-04-15 | 用于检测电解质泄漏的垫圈和包含该垫圈的二次电池 |
EP16780325.3A EP3258534B1 (en) | 2015-04-15 | 2016-04-15 | Washer for detecting electrolyte leakage, and secondary battery comprising same |
US15/554,311 US10497992B2 (en) | 2015-04-15 | 2016-04-15 | Washer for detecting electrolyte leakage, and secondary battery comprising same |
JP2017547987A JP6431619B2 (ja) | 2015-04-15 | 2016-04-15 | 電解液漏れ感知用ワッシャー及びそれを含む二次電池 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20150053158 | 2015-04-15 | ||
KR10-2015-0053158 | 2015-04-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016167602A1 true WO2016167602A1 (ko) | 2016-10-20 |
Family
ID=57125936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2016/003949 WO2016167602A1 (ko) | 2015-04-15 | 2016-04-15 | 전해액 누액 감지용 와셔 및 이를 포함하는 이차 전지 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10497992B2 (ko) |
EP (1) | EP3258534B1 (ko) |
JP (1) | JP6431619B2 (ko) |
KR (1) | KR101770699B1 (ko) |
CN (1) | CN107431253B (ko) |
WO (1) | WO2016167602A1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10897066B2 (en) | 2017-01-03 | 2021-01-19 | Lg Chem, Ltd. | Battery cell capable of measuring inner temperature thereof |
JP2021504884A (ja) * | 2017-12-22 | 2021-02-15 | エルジー・ケム・リミテッド | 二次電池用ワッシャー、これを含む二次電池、及び前記二次電池用ワッシャーの製造方法 |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102450147B1 (ko) * | 2017-12-13 | 2022-10-04 | 삼성에스디아이 주식회사 | 이차 전지 |
CN108303413A (zh) * | 2017-12-30 | 2018-07-20 | 惠州亿纬锂能股份有限公司 | 一种热缩套管及其制备方法和用途 |
CN108593210A (zh) * | 2017-12-30 | 2018-09-28 | 惠州亿纬锂能股份有限公司 | 一种绝缘面垫及其制备方法和用途 |
US11365763B2 (en) * | 2018-12-06 | 2022-06-21 | Danfoss Power Solutions Inc. | Cover plate and seal carrier that eliminates bearing endplay |
USD926500S1 (en) | 2019-07-22 | 2021-08-03 | Walker Edison Furniture Company Llc | Cabinet |
USD973399S1 (en) | 2020-01-15 | 2022-12-27 | Walker Edison Furniture Company Llc | Console |
USD958566S1 (en) | 2020-01-15 | 2022-07-26 | Walker Edison Furniture Company Llc | Console |
USD963381S1 (en) | 2020-01-16 | 2022-09-13 | Walker Edison Furniture Company Llc | Console |
USD970266S1 (en) | 2020-01-16 | 2022-11-22 | Walker Edison Furniture Company Llc | Console |
USD957850S1 (en) | 2020-01-16 | 2022-07-19 | Walker Edison Furniture Company Llc | Buffet |
USD982331S1 (en) | 2020-01-17 | 2023-04-04 | Walker Edison Furniture Company Llc | Bench |
KR20220010384A (ko) | 2020-07-17 | 2022-01-25 | 주식회사 엘지에너지솔루션 | 버튼형 이차전지 및 그의 제조방법 |
USD966757S1 (en) | 2020-07-20 | 2022-10-18 | Walker Edison Furniture Company Llc | Console |
USD941614S1 (en) * | 2020-07-20 | 2022-01-25 | Walker Edison Furniture Company Llc | Console |
USD954475S1 (en) | 2020-07-21 | 2022-06-14 | Walker Edison Furniture Company Llc | Console |
EP3982473A1 (de) * | 2020-10-12 | 2022-04-13 | Andreas Stihl AG & Co. KG | Akkupack, bearbeitungssystem und verfahren zur herstellung eines akkupacks |
USD979295S1 (en) | 2021-01-26 | 2023-02-28 | Walker Edison Furniture Company Llc | Sideboard |
USD979294S1 (en) | 2021-01-26 | 2023-02-28 | Walker Edison Furniture Company Llc | Cabinet |
USD978581S1 (en) | 2021-01-27 | 2023-02-21 | Walker Edison Furniture Company Llc | Console |
USD985972S1 (en) | 2021-06-14 | 2023-05-16 | Walker Edison Furniture Company Llc | Sideboard |
USD988036S1 (en) | 2021-06-28 | 2023-06-06 | Walker Edison Furniture Company Llc | Cabinet |
USD1005747S1 (en) | 2021-06-29 | 2023-11-28 | Walker Edison Furniture Company Llc | Sideboard |
USD1023639S1 (en) | 2021-07-14 | 2024-04-23 | Walker Edison Furniture Company Llc | Console |
USD1027509S1 (en) | 2021-07-27 | 2024-05-21 | Walker Edison Furniture Company Llc | Console |
USD1027505S1 (en) | 2021-09-08 | 2024-05-21 | Walker Edison Furniture Company Llc | Console |
USD1010362S1 (en) | 2021-11-03 | 2024-01-09 | Walker Edison Furniture Company Llc | Cabinet |
CN114243202B (zh) * | 2021-11-13 | 2023-12-01 | 成都新英能基科技有限公司 | 一种电极盖板、电极、锂电池及生产工艺 |
USD1013424S1 (en) | 2021-12-07 | 2024-02-06 | Walker Edison Furniture Company Llc | Console |
USD1010367S1 (en) | 2021-12-09 | 2024-01-09 | Walker Edison Furniture Company Llc | Console |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980035077U (ko) * | 1996-12-12 | 1998-09-15 | 손욱 | 이차전지의 누액 감지수단 |
KR100614399B1 (ko) * | 2004-11-29 | 2006-08-21 | 삼성에스디아이 주식회사 | 리튬이온 이차전지 |
KR100696782B1 (ko) * | 2005-04-27 | 2007-03-19 | 삼성에스디아이 주식회사 | 리튬이온 이차전지 |
KR101006883B1 (ko) * | 2006-12-23 | 2011-01-12 | 주식회사 엘지화학 | 전해액 흡입성 와셔를 포함하고 있는 전지 |
KR20140136245A (ko) * | 2013-05-20 | 2014-11-28 | 주식회사 엘지화학 | 이차 전지용 와셔 및 그 제조 방법 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5569956A (en) * | 1978-11-22 | 1980-05-27 | Citizen Watch Co Ltd | Alkali cell |
JP2001338698A (ja) | 2000-05-30 | 2001-12-07 | Yuasa Corp | 密閉形鉛蓄電池 |
KR100948848B1 (ko) * | 2003-01-18 | 2010-03-22 | 삼성에스디아이 주식회사 | 전지부 유니트와, 이를 채용한 리튬 이차 전지 |
JP5051644B2 (ja) * | 2007-10-03 | 2012-10-17 | Necエナジーデバイス株式会社 | リチウムイオン二次電池 |
JP5110132B2 (ja) | 2009-08-07 | 2012-12-26 | 大日本印刷株式会社 | 電気化学セル用包装材 |
KR101213482B1 (ko) * | 2010-12-14 | 2012-12-20 | 삼성에스디아이 주식회사 | 이차 전지 |
CN103208598B (zh) * | 2012-01-16 | 2016-06-29 | 微宏动力系统(湖州)有限公司 | 电池组及其漏液检测方法 |
JP5949130B2 (ja) * | 2012-05-16 | 2016-07-06 | 株式会社豊田自動織機 | リチウムイオン二次電池及びリチウムイオン二次電池の製造方法 |
-
2016
- 2016-04-15 EP EP16780325.3A patent/EP3258534B1/en active Active
- 2016-04-15 KR KR1020160046425A patent/KR101770699B1/ko active IP Right Grant
- 2016-04-15 JP JP2017547987A patent/JP6431619B2/ja active Active
- 2016-04-15 US US15/554,311 patent/US10497992B2/en active Active
- 2016-04-15 CN CN201680017730.XA patent/CN107431253B/zh active Active
- 2016-04-15 WO PCT/KR2016/003949 patent/WO2016167602A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980035077U (ko) * | 1996-12-12 | 1998-09-15 | 손욱 | 이차전지의 누액 감지수단 |
KR100614399B1 (ko) * | 2004-11-29 | 2006-08-21 | 삼성에스디아이 주식회사 | 리튬이온 이차전지 |
KR100696782B1 (ko) * | 2005-04-27 | 2007-03-19 | 삼성에스디아이 주식회사 | 리튬이온 이차전지 |
KR101006883B1 (ko) * | 2006-12-23 | 2011-01-12 | 주식회사 엘지화학 | 전해액 흡입성 와셔를 포함하고 있는 전지 |
KR20140136245A (ko) * | 2013-05-20 | 2014-11-28 | 주식회사 엘지화학 | 이차 전지용 와셔 및 그 제조 방법 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3258534A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10897066B2 (en) | 2017-01-03 | 2021-01-19 | Lg Chem, Ltd. | Battery cell capable of measuring inner temperature thereof |
US11557795B2 (en) | 2017-08-29 | 2023-01-17 | Lg Energy Solution, Ltd. | Washer for secondary battery, secondary battery including same, and method for manufacturing washer for secondary battery |
JP2021504884A (ja) * | 2017-12-22 | 2021-02-15 | エルジー・ケム・リミテッド | 二次電池用ワッシャー、これを含む二次電池、及び前記二次電池用ワッシャーの製造方法 |
JP7014373B2 (ja) | 2017-12-22 | 2022-02-01 | エルジー・ケム・リミテッド | 二次電池用ワッシャー、これを含む二次電池、及び前記二次電池用ワッシャーの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20180053974A1 (en) | 2018-02-22 |
CN107431253A (zh) | 2017-12-01 |
US10497992B2 (en) | 2019-12-03 |
CN107431253B (zh) | 2020-07-03 |
KR20160123259A (ko) | 2016-10-25 |
KR101770699B1 (ko) | 2017-08-23 |
JP6431619B2 (ja) | 2018-11-28 |
JP2018514899A (ja) | 2018-06-07 |
EP3258534B1 (en) | 2020-03-11 |
EP3258534A1 (en) | 2017-12-20 |
EP3258534A4 (en) | 2018-08-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016167602A1 (ko) | 전해액 누액 감지용 와셔 및 이를 포함하는 이차 전지 | |
WO2014062016A1 (ko) | 전극 리드 및 이를 포함하는 이차 전지 | |
WO2017039126A1 (ko) | 전지셀 및 그의 제조방법 | |
KR100864694B1 (ko) | 파우치 전지용 형상기억 튜브로 구성된 고온 안전변 | |
WO2013002608A2 (ko) | 이차전지용 전극조립체 및 이를 포함한 리튬 이차전지 | |
WO2013009148A2 (ko) | 원통형 이차 전지 | |
WO2012102548A2 (ko) | 원통형 이차전지 | |
WO2021210908A1 (ko) | 파우치 형 전지 케이스 및 파우치 형 이차 전지 | |
WO2015072753A1 (ko) | 젤리-롤형 전극 조립체 및 이를 구비한 이차전지 | |
WO2021112655A1 (ko) | 배터리 모듈, 배터리 팩, 및 자동차 | |
WO2022039442A1 (ko) | 단열 부재를 포함하는 배터리 모듈 | |
WO2021206418A1 (ko) | 이차전지 및 이를 포함하는 디바이스 | |
WO2019125057A1 (ko) | 이차 전지용 와셔, 이를 포함하는 이차 전지, 및 상기 이차 전지용 와셔의 제조 방법 | |
WO2022220627A1 (ko) | 이차전지 | |
WO2019088524A1 (ko) | 이차 전지 및 이차 전지용 절연판 | |
WO2021153922A1 (ko) | 이차전지 및 이차전지의 제조 방법 | |
WO2021235717A1 (ko) | 이차 전지 및 그의 보수 방법 | |
WO2019004545A1 (ko) | 과충전 방지부재를 가지는 배터리 셀 | |
WO2017188563A1 (ko) | 보호부재를 갖는 이차 전지 | |
WO2011115392A2 (ko) | 이차 전지 | |
WO2022220655A1 (ko) | 이차전지 | |
WO2023063689A1 (ko) | 이차전지 | |
WO2018186601A1 (ko) | 배터리 팩 | |
WO2023121373A1 (ko) | 가스켓, 이를 포함하는 이차전지용 캡 조립체 및 이를 포함하는 이차전지 | |
WO2017217603A1 (ko) | 전극 조립체 및 이를 포함하는 이차 전지 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16780325 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15554311 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2017547987 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2016780325 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |