WO2022158862A2 - 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 - Google Patents
전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 Download PDFInfo
- Publication number
- WO2022158862A2 WO2022158862A2 PCT/KR2022/001010 KR2022001010W WO2022158862A2 WO 2022158862 A2 WO2022158862 A2 WO 2022158862A2 KR 2022001010 W KR2022001010 W KR 2022001010W WO 2022158862 A2 WO2022158862 A2 WO 2022158862A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- uncoated
- electrode assembly
- winding
- section
- Prior art date
Links
- 238000004804 winding Methods 0.000 claims abstract description 322
- 238000003466 welding Methods 0.000 claims description 183
- 239000012634 fragment Substances 0.000 claims description 154
- 238000000034 method Methods 0.000 claims description 88
- 238000005452 bending Methods 0.000 claims description 75
- 239000011149 active material Substances 0.000 claims description 25
- 230000036961 partial effect Effects 0.000 claims description 23
- 238000005520 cutting process Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 17
- 230000007423 decrease Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 description 94
- 238000010168 coupling process Methods 0.000 description 94
- 238000005859 coupling reaction Methods 0.000 description 94
- 239000010410 layer Substances 0.000 description 93
- 230000008569 process Effects 0.000 description 21
- 229910052782 aluminium Inorganic materials 0.000 description 18
- 230000002093 peripheral effect Effects 0.000 description 16
- 239000003792 electrolyte Substances 0.000 description 13
- 239000011295 pitch Substances 0.000 description 13
- 239000011247 coating layer Substances 0.000 description 12
- 239000012212 insulator Substances 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 230000006378 damage Effects 0.000 description 11
- 238000003780 insertion Methods 0.000 description 11
- 230000037431 insertion Effects 0.000 description 11
- 230000002829 reductive effect Effects 0.000 description 11
- 238000000926 separation method Methods 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 239000011324 bead Substances 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 235000015110 jellies Nutrition 0.000 description 8
- 239000008274 jelly Substances 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 239000002585 base Substances 0.000 description 6
- 238000002788 crimping Methods 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 6
- 238000013022 venting Methods 0.000 description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 239000007774 positive electrode material Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 229910052720 vanadium Inorganic materials 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000010954 inorganic particle Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000002952 polymeric resin Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 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
- 230000008859 change Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000007773 negative electrode material Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920006254 polymer film Polymers 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910016467 AlCl 4 Inorganic materials 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
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910020213 PB(Mg3Nb2/3)O3-PbTiO3 Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910020210 Pb(Mg3Nb2/3)O3—PbTiO3 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 1
- 229910018286 SbF 6 Inorganic materials 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229910052789 astatine Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010294 electrolyte impregnation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/133—Thickness
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
-
- 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
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- 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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
- H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
- H01M50/477—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
- H01M50/48—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by the material
- H01M50/486—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/545—Terminals formed by the casing of the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/567—Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to an electrode assembly, a battery, and a battery pack and a vehicle comprising the same.
- Korean Patent Application No. 10-2021-0142196 filed on October 22, 2021, Korean Patent Application No. 10-2021-0153472, filed on November 9, 2021, November 2021 Korean Patent Application No. 10-2021-0160823 filed on March 19, Korean Patent Application No. 10-2021-0163809 filed on November 24, 2021 Korean Patent filed on November 26, 2021 Application No. 10-2021-0165866, Korean Patent Application No. 10-2021-0172446, filed on December 3, 2021, Korean Patent Application No. 10-2021-0177091, filed on December 10, 2021 No., Korean Patent Application No. 10-2021-0194593, filed on December 31, 2021, Korean Patent Application No. 10-2021-0194610, filed on December 31, 2021, December 31, 2021 Korean Patent Application No. 10-2021-0194572, filed on December 31, 2021, Korean Patent Application No.
- Secondary batteries that are easy to apply according to product groups and have electrical characteristics such as high energy density are not only portable devices, but also electric vehicles (EVs) or hybrid vehicles (HEVs) driven by an electric drive source, etc. It is universally applied.
- EVs electric vehicles
- HEVs hybrid vehicles
- the types of secondary batteries currently widely used include a lithium ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel hydrogen battery, a nickel zinc battery, and the like.
- the unit secondary battery that is, the operating voltage of the unit battery is about 2.5V ⁇ 4.5V. Accordingly, when a higher output voltage is required, a plurality of batteries may be connected in series to form a battery pack. In addition, a plurality of batteries may be connected in parallel to form a battery pack according to the charge/discharge capacity required for the battery pack. Accordingly, the number and electrical connection types of the batteries included in the battery pack may be variously set according to a required output voltage and/or charge/discharge capacity.
- cylindrical, prismatic, and pouch-type batteries are known as types of unit secondary batteries.
- a separator which is an insulator, is interposed between the positive electrode and the negative electrode and wound to form an electrode assembly in the form of a jelly roll, which is inserted into the battery housing to configure the battery.
- a strip-shaped electrode tab may be connected to each of the uncoated regions of the positive electrode and the negative electrode, and the electrode tab electrically connects the electrode assembly and the externally exposed electrode terminal.
- the positive electrode terminal is a cap of a sealing body sealing the opening of the battery housing
- the negative electrode terminal is the battery housing.
- a small cylindrical battery with a form factor of 1865 (diameter: 18 mm, height: 65 mm) or 2170 (diameter: 21 mm, height: 70 mm) is not a big issue with resistance and heat generation.
- a problem that the cylindrical battery ignites may occur as a lot of heat is generated around the electrode tab during the rapid charging process.
- FIG. 1 to 3 are views showing a manufacturing process of a tab-less cylindrical battery.
- 1 shows the structure of the electrode
- FIG. 2 shows the winding process of the electrode
- FIG. 3 shows the process in which the current collector is welded to the bent surface area of the uncoated part.
- the positive electrode 10 and the negative electrode 11 have a structure in which an active material 21 is coated on a sheet-shaped current collector 20, and on one long side along the winding direction (X). It includes an uncoated region 22 .
- the electrode assembly (A) is manufactured by sequentially stacking the positive electrode 10 and the negative electrode 11 together with two separators 12 as shown in FIG. 2 , and then winding them in one direction (X). In this case, the uncoated regions of the positive electrode 10 and the negative electrode 11 are disposed in opposite directions. The positions of the anode 10 and the cathode 11 may be changed opposite to those shown.
- the uncoated area 10a of the positive electrode 10 and the uncoated area 11a of the negative electrode 11 are bent toward the core to form a bent surface area. (30, 31) are joined by welding, respectively.
- a separate electrode tab is not coupled to the positive uncoated region 10a and the negative uncoated region 11a, the current collectors 30 and 31 are connected to external electrode terminals, and a current path is used to wind the electrode assembly A. Since it is formed with a large cross-sectional area along the axial direction (refer to the arrow), there is an advantage in that the resistance of the battery can be lowered. This is because resistance is inversely proportional to the cross-sectional area of the path through which the current flows.
- the uncoated region 32 adjacent to the core of the electrode assembly A is bent, thereby occluding all or a substantial portion of the cavity 33 in the core of the electrode assembly A.
- the electrolyte injector is inserted into the cavity 33 , it may interfere with the uncoated area 32 bent near the core, resulting in tearing of the uncoated area 32 .
- bent portions of the uncoated regions 10a and 11a to which the current collectors 30 and 31 are welded should be overlapped in multiple layers and there should be no empty space (gap). Only then, sufficient welding strength can be obtained, and even when the latest technology such as laser welding is used, the problem that the laser penetrates into the electrode assembly A and melts the separator or the active material can be prevented.
- the uncoated areas 10a and 11a In order for the uncoated areas 10a and 11a to overlap with the same number of layers, the uncoated areas 10a and 11a at the corresponding positions based on the position of each winding turn are bent toward the core and cover the top surface of the uncoated area bent in the inner winding turn. do.
- the bending length e when the interval between winding turns is d, and the bending length of the uncoated regions 10a and 11a of each winding turn is e, the bending length e must have a length of d*n (n is a natural number greater than or equal to 2). . Only then is an area in which the uncoated areas 10a and 11a overlap in multiple layers with the same amount.
- the uncoated regions 10a and 11a must be sufficiently long.
- the electrode assembly included in the small cylindrical battery has a small radius, it is difficult to conceive of a motivation for deriving a concept of designing a sufficiently long bending length of the uncoated regions 10a and 11a.
- An object of the present invention is to provide an electrode assembly having a non-coated part bent structure capable of preventing damage to a separator or an active material layer.
- Another technical object of the present invention is to provide an electrode assembly in which the electrolyte injection passage is not blocked even when the uncoated region is bent.
- Another technical object of the present invention is to provide an electrode assembly having improved energy density and reduced resistance.
- Another technical object of the present invention is to provide a battery including an electrode assembly having an improved structure, a battery pack including the same, and a vehicle including the battery pack.
- a first electrode and a second electrode and a separator interposed therebetween are wound around an axis to define a core and an outer circumferential surface
- the first electrode includes an uncoated portion exposed to the outside of the separator along a winding axis direction of the electrode assembly at a long side end, and a portion of the uncoated portion is bent in a radial direction of the electrode assembly to include overlapping layers of the uncoated portion
- a surface area may be formed, and the number of stacked portions of the uncoated portion may be 10 or more in a partial area of the bent surface area in a direction of a winding axis of the electrode assembly.
- the total number of winding turns of the first electrode is defined as n 1 , and a value obtained by dividing the winding turn index k (a natural number of 1 to n 1 ) at the kth winding turn position by the total number of winding turns n 1 is wound. If it is defined as the relative radial position R 1,k with respect to the turn index k, the length ratio of the radial section of R 1,k satisfying the condition that the number of stacks of the uncoated part is 10 or more is at least 30% compared to the relative radial position section where the uncoated part is bent may be more than
- the ratio of the length of the radial section of R 1,k satisfying the condition that the number of stacked parts of the uncoated part is 10 or more may be 30% to 85% of the relative radial position section in which the uncoated part is bent.
- the second electrode includes an uncoated portion exposed to the outside of the separator along a winding axis direction of the electrode assembly at a long side end, and a portion of the uncoated portion is bent in a radial direction of the electrode assembly to form an uncoated portion of the uncoated portion.
- a bent surface area including overlapping layers may be formed, and in some areas of the bent surface area, the number of stacks of the uncoated portion in a direction of a winding axis of the electrode assembly may be 10 or more.
- the total number of winding turns of the second electrode is defined as n 2 , and the calculated value obtained by dividing the winding turn index k (a natural number of 1 to n 2 ) at the kth winding turn position by the total number of winding turns n 2 If it is defined as the relative radial position R 2,k with respect to the winding turn index k, the length ratio of the radial section of R 2,k satisfying the condition that the number of stacks of the uncoated section is 10 or more is at least compared to the relative radial position section in which the uncoated section is bent It may be more than 30%.
- a length ratio of a radial section of R 2,k that satisfies the condition that the number of stacked parts of the uncoated part is 10 or more may be 30% to 85% compared to a relative radial position section in which the uncoated part is bent.
- the height of the uncoated area in the section from the relative radial position R 1,1 to the preset first relative radial position R 1,k* is the relative radius of the number of winding turns k*+1. It may be less than the height of the uncoated area of the section from the position R 1,k*+1 to the relative radial position 1 .
- the section from the relative radial position R 1,1 of the first winding turn to the first relative radial position R 1,k* of the k*th winding turn is set in advance.
- the height of the portion may be lower than the bent surface area formed by overlapping the bent uncoated portions.
- the section from the relative radial position R 1,1 in the first winding turn to the first relative radial position R 1,k* in the k*th winding turn is an electrode assembly may not be bent towards the core of
- the height of the uncoated area in the section from the relative radial position R 2,1 of the first winding turn to the first relative radial position R 2,k* of the k*th winding turn preset may be smaller than the height of the uncoated part of the section from the relative radial position R 2,k*+1 to the relative radial position 1 of the k*+1th winding turn.
- the uncoated region in the section from the relative radial position R 2,1 of the first winding turn to the first relative radial position R 2,k* of the k*th winding turn, is the uncoated region whose height is bent. It may be lower than the bent surface area formed by overlapping.
- the uncoated portion of the section from the relative radial position R 2,1 of the first winding turn to the first relative radial position R 2,k* of the k*th winding turn is not bent toward the core of the electrode assembly.
- the uncoated portion of the first electrode or the second electrode may be divided into a plurality of segments that can be bent independently of each other.
- each of the plurality of segments has a shape of a geometric figure in which the upper region of the bent line has the bent line as the base, and the geometric figure may be one or more straight lines, one or more curves, or a combination thereof.
- the geometric figure may decrease in width stepwise or continuously from the base to the top.
- the lower interior angle between the base of the geometric figure and the side that intersects it may be between 60 degrees and 85 degrees.
- the plurality of segments may increase stepwise or continuously along a direction in which the lower inner angle is parallel to a winding direction of the electrode assembly.
- each of the plurality of segments has a trapezoidal shape in which the upper region of the bending line has the bent line as the base, and the radius of the winding turn in which the segment is disposed based on the core center of the electrode assembly is r,
- the length of the arc of the winding turn corresponding to the lower part of the segment is L arc
- the inner angle of the lower segment of the segment when the assumption that the side sides of the pair of segments arranged adjacent to the winding turn with radius r are parallel to each other is applied
- ⁇ assumption is
- the actual lower interior angle ⁇ real of the pair of adjacent fragments may satisfy the following equation.
- ⁇ 1 90°- 360°*(L arc /2 ⁇ r)*0.5
- the circumferential angle corresponding to the arc length L arc of the winding turn corresponding to the lower portion of the segment with respect to the center of the core of the electrode assembly may be 45 or less.
- the overlap ratio of adjacent fragments disposed in a winding turn having a radius of r with respect to the center of the core of the electrode assembly is defined by the formula ( ⁇ real / ⁇ assumptoin -1)
- the overlap ratio of the fragments may be greater than 0 and less than or equal to 0.05.
- the overlap ratio of the fragments may be greater than 0 and less than or equal to 0.05.
- the uncoated portion of the section from the relative radial position R 1,1 of the first winding turn to the first relative radial position R 1,k* of the k*th winding turn is the height may be smaller than the height of the uncoated region of the section from the relative radial position R 1,k*+1 to the relative radial position 1 and may not be bent toward the core.
- the length of the first electrode corresponding to the relative radial positions R 1,1 to R 1,k* is the length of the first electrode corresponding to the relative radial positions R 1,k*+1 to 1. It may be 1% to 30% of the length.
- the uncoated area bending length fd 1,k*+1 of the relative radial position R 1,k*+1 of the k*+1th winding turn is the first winding turn may be shorter than the radial length from the relative radial position R 1,1 to the k*th relative radial position R 1,k* .
- a section 0.9r c from the center of the core is the relative radial position R of the k*+1th winding turn It may not be shielded by the bent part of the uncoated part located in the range of 1,k*+1 to 1.
- the uncoated part bending length fd 1,k*+1 of the relative radial position R 1,k*+1 of the k*+1th winding turn, the radius r c of the core, and the relative radial position R 1,k The distance d 1,k*+1 where *+1 is spaced apart from the center of the electrode assembly may satisfy the following equation.
- the uncoated portion of the section from the relative radial position R 2,1 of the first winding turn to the first relative radial position R 2,k* of the k*th winding turn is the height may be smaller than the uncoated area height of the section from the relative radial position R 2,k*+1 to the relative radial position 1 of the k*+1th winding turn and may not be bent toward the core.
- the length of the second electrode corresponding to the relative radial positions R 2,1 to R 2,k* is the length of the second electrode corresponding to the relative radial positions R 2,k*+1 to 1 It may be 1% to 30% of the length.
- the bending length fd 2,k*+1 of the uncoated region located at the relative radial position R 2,k*+1 of the k*+1-th winding turn is the first It may be shorter than the radial length from the relative radial position R 2,1 of the winding turn to the first relative radial position R 2,k* of the k*th winding turn.
- a section 0.90r c from the center of the core is the relative radial position R of the k*+1th winding turn It may not be shielded by the bent portion of the uncoated portion of the second electrode located in the range from 2,k*+1 to the relative radial position 1 .
- the uncoated area bending length fd 2,k*+1 of the relative radial position R 2,k*+1 of the k*+1th winding turn, the radius r c of the core, and the relative radial position R 2,k The distance d 2,k*+1 where *+1 is spaced apart from the center of the electrode assembly may satisfy the following equation.
- the relative radial position R 1,k*+1 of the k*+1 -th winding turn to the second relative radial position R 1,k of the preset k@-th winding turn R 1,k The uncoated part of the section up to @ is divided into a plurality of segment pieces, and the height thereof may be increased step by step along one direction parallel to the winding direction.
- the radial length of the section from the relative radial positions R 1,k*+1 to R 1,k@ may be 1% to 56% of the radius of the wound structure of the first electrode excluding the core.
- the uncoated portion of the first electrode from the relative radial position R 1,k@+1 of the preset k@+1-th winding turn to the relative radial position 1 is a plurality of segment segments.
- the heights of the plurality of segments may be substantially equal from the relative radial position R 1,k@+1 to the relative radial position 1 .
- the relative radial position R 2,k*+1 of the k*+ 1th winding turn to the second relative radial position R 2,k of the preset k@th winding turn R 2,k The uncoated portion of the section up to @ is divided into a plurality of segment pieces, and the height thereof may be increased stepwise or gradually along one direction parallel to the winding direction.
- the radial length of the section from the relative radial positions R 2,k*+1 to R 2,k@ may be 1% to 56% of the radius of the wound structure of the second electrode excluding the core.
- the uncoated portion of the second electrode from the second relative radial position R 2,k@+1 to the relative radial position 1 of the k@+1-th winding turn is a plurality of segment segments.
- the height of the plurality of segment segments may be substantially the same from the relative radial position R 2,k@+1 of the k@+1th winding turn to the relative radial position 1 .
- the uncoated portion bent in the radial direction of the electrode assembly is divided into a plurality of independently bendable segment pieces, and the height and winding direction of the plurality of segment segments in the winding axial direction At least one of the widths may be increased step by step along one direction parallel to the winding direction individually or in groups.
- the uncoated portion bent in the radial direction of the electrode assembly is divided into a plurality of independently bendable segment pieces, and the height and winding direction of the plurality of segment segments in the winding axial direction At least one of the widths may be increased step by step along one direction parallel to the winding direction individually or in groups.
- each of the plurality of fragments a width condition of 1 to 11 mm in the winding direction; height condition of 2 to 10 mm in the winding axis direction; And it may satisfy at least one condition from among the spacing conditions of 0.05 to 1 mm in the winding direction.
- a cutting groove may be interposed between the plurality of segment pieces, and a predetermined gap may be provided between a lower end of the cutting groove and the active material layer.
- the length of the gap may be 0.2 to 4 mm.
- the plurality of fragments form a plurality of fragment groups along the winding direction of the electrode assembly, and the fragments belonging to the same fragment group have a width in a winding direction, a height in a winding axial direction, and a winding direction. At least one or more of the spacing pitches may be substantially equal to each other.
- At least one of a width in a winding direction, a height in a winding axial direction, and a separation pitch in the winding direction increases step by step while going in a direction parallel to the winding direction of the electrode assembly. can do.
- At least some of the plurality of segment groups may be disposed in the same winding turn of the electrode assembly.
- the bent surface area formed by the uncoated portion of the first electrode includes a section for increasing the number of stacks and a section for increasing the number of stacks from the outer periphery to the core of the electrode assembly, and the section for increasing the number of stacks is uncoated.
- the uniform layering number section is defined as a section from a radial position where the maximum number of layers of the uncoated part is reached to a radial position where bending of the uncoated part starts,
- the radial length of the uniform number section may be 30% or more of the radial length from the winding turn at which the bending of the uncoated area starts to the winding turn at which the bending of the uncoated area ends.
- the bent surface area formed by the uncoated portion of the second electrode includes a section for increasing the number of stacks and a section for increasing the number of stacks from the outer periphery to the core of the electrode assembly, and the section for increasing the number of stacks is uncoated.
- the uniform layering number section is defined as a section from a radial position where the maximum number of layers of the uncoated part is reached to a radial position where bending of the uncoated part starts,
- the radial length of the uniform number section may be 30% or more of the radial length from the winding turn at which the bending of the uncoated area starts to the winding turn at which the bending of the uncoated area ends.
- the thickness of the first electrode and the second electrode may be 80 ⁇ m to 250 ⁇ m, and the interval between the uncoated regions positioned at the winding turns adjacent in the radial direction of the electrode assembly may be 200 ⁇ m to 500 ⁇ m.
- the thickness of the uncoated region of the first electrode may be 10 ⁇ m to 25 ⁇ m.
- the thickness of the uncoated region of the second electrode may be 5 ⁇ m to 20 ⁇ m.
- a total stacking thickness of the overlapping layers of the uncoated region may be 100 ⁇ m to 975 ⁇ m.
- the uncoated portion of the first electrode is divided into a plurality of segment pieces that are independent of each other, and the first electrode includes a height variable section in which the height of the segment is variable and a height uniform section in which the height of the segment is uniform, ,
- the ratio of the thickness of the uncoated part of the bent surface area to the height of the fragment is 1.0% to 16.3% in the area formed by bending the fragment included in the height uniformity section among the bent surface area along the radial direction of the assembly have.
- the total stacking thickness of the overlapping layers of the uncoated region may be 50 ⁇ m to 780 ⁇ m.
- the uncoated portion of the second electrode is divided into a plurality of segment pieces that are independent of each other, and the second electrode includes a height variable section in which the height of the segment is variable and a height uniform section in which the height of the segment is uniform, ,
- the ratio of the thickness of the uncoated part of the bent surface area to the height of the fragment is 0.5% to 13.0% have.
- a first electrode and a second electrode and a separator interposed therebetween are wound around an axis to define a core and an outer circumferential surface
- the first electrode includes a first uncoated portion at a long side end of the separator along a winding axis direction of the electrode assembly, and a portion of the first uncoated portion is bent in a radial direction of the electrode assembly to form a first bent surface area and a thickness of the first uncoated portion may be 100 ⁇ m to 975 ⁇ m in a partial region of the first bent surface area.
- the first uncoated portion of the first electrode is divided into a plurality of segment pieces that are independent of each other, and the first electrode includes a height variable section in which the height of the segment is variable and a height uniform section in which the height of the segment is uniform.
- the ratio of the thickness of the uncoated part of the bent surface area to the height of the fragments is 1.0% to 16.3%.
- the second electrode includes a second uncoated portion exposed to the outside of the separator along a winding axis direction of the electrode assembly at a long side end, and a portion of the second uncoated portion is bent in a radial direction of the electrode assembly to form a second bent surface area, and in some areas of the second bent surface area, a stacking thickness of the second uncoated part may be 50 ⁇ m to 780 ⁇ m.
- the second uncoated portion of the second electrode is divided into a plurality of segment pieces that are independent of each other, and the second electrode has a height variable section in which the height of the segment is variable and a section in which the height of the segment is uniform in height.
- the ratio of the thickness of the uncoated part of the bent surface area to the height of the fragment is 0.5% to 13.0% can be
- a battery according to another aspect of the present invention for achieving the above technical problem is an electrode assembly in which a first electrode and a second electrode and a separator interposed therebetween are wound around an axis to define a core and an outer circumferential surface, wherein the first At least one of the electrode and the second electrode includes an uncoated portion exposed to the outside of the separator along a winding axis direction of the electrode assembly at a long side end, and at least a portion of the uncoated portion is bent and bent in a radial direction of the electrode assembly an electrode assembly forming a surface area, wherein the number of stacked portions of the uncoated area is 10 or more in a portion of the bent surface area; a battery housing housing the electrode assembly and electrically connected to one of the first electrode and the second electrode to have a first polarity; a sealing body sealing the open end of the battery housing; a terminal electrically connected to the other of the first electrode and the second electrode, the terminal having a second polarity exposed to the outside; and a current
- the first electrode includes a first uncoated part exposed to the outside of the separator along a winding axis direction of the electrode assembly at a long side end, and the total number of turns of the first electrode is defined as n 1 , If the value obtained by dividing the winding turn index k (a natural number of 1 to n 1 ) by the total number of winding turns n 1 at the k-th winding turn position is defined as the relative radial position R 1,k with respect to the winding turn index k, the first A length ratio of a radial section of R 1,k that satisfies the condition that the number of layers of uncoated parts is 10 or more may be at least 30% or more compared to a section at a relative radial position in which the first uncoated part is bent.
- the second electrode includes a second uncoated portion exposed to the outside of the separator along the winding axis direction of the electrode assembly at the long side end, and the total number of turns of the second electrode is defined as n 2 , If the value obtained by dividing the winding turn index k (a natural number of 1 to n 2 ) by the total number of winding turns n 2 at the k-th winding turn position is defined as the relative radial position R 2,k with respect to the winding turn index k, the second The length ratio of the radial section of R 2,k satisfying the condition that the number of stacked parts of the uncoated part is 10 or more may be at least 30% or more of the relative radial position section in which the second uncoated part is bent.
- the welded area of the current collector may overlap the bent surface area in which the number of stacks of the uncoated area is 10 or more by 50% or more.
- the welding area of the current collector may have a welding strength of 2 kgf/cm 2 or more.
- the welding area may be spaced apart by a distance of 4 mm or more and 50% or less of the radius of the electrode assembly in a radial direction with respect to the center of the core of the electrode assembly.
- a battery according to another aspect of the present invention for achieving the above technical problem is an electrode assembly in which a first electrode and a second electrode and a separator interposed therebetween are wound around an axis to define a core and an outer circumferential surface, wherein the first The electrode includes a first uncoated portion at a long side end of the separator along a winding axis direction of the electrode assembly, and a portion of the first uncoated portion is bent in a radial direction of the electrode assembly to form a first bent surface area, , an electrode assembly in which a portion of the first bent surface region has a stacking thickness of the first uncoated portion of 100 ⁇ m to 975 ⁇ m; a battery housing housing the electrode assembly and electrically connected to one of the first electrode and the second electrode to have a first polarity; a sealing body sealing the open end of the battery housing; a terminal electrically connected to the other of the first electrode and the second electrode, the terminal having a second polarity exposed to the outside; and a first current
- the first uncoated portion of the first electrode is divided into a plurality of segment pieces that are independent of each other, and the first electrode has a height variable section in which the height of the segment is variable and a section in which the height of the segment is uniform in height.
- the area formed by bending the fragments included in the height uniformity section along the radial direction of the assembly has a ratio of the thickness of the uncoated part of the first bent surface area to the height of the fragments of 1.0 % to 16.3%.
- the welding region of the first current collector may have a welding strength of 2 kgf/cm 2 or more.
- the welding area of the first current collector may have a welding strength of 2 kgf/cm 2 or more.
- the second electrode includes a second uncoated portion exposed to the outside of the separator along a winding axis direction of the electrode assembly at a long side end, and a portion of the second uncoated portion is in a radial direction of the electrode assembly. is bent to form a second bent surface area, and a partial area of the second bent surface area has a stacking thickness of the second uncoated part of 50 ⁇ m to 780 ⁇ m, and is welded to the second bent surface area, the battery housing or the and a second current collector electrically connected to the other of the terminals, wherein the welding area of the second current collector overlaps with a partial area of the second bent surface area where the thickness of the second uncoated part is 50 ⁇ m to 780 ⁇ m.
- the second uncoated portion of the second electrode is divided into a plurality of segment pieces that are independent of each other, and the second electrode has a height variable section in which the height of the segment is variable and a section in which the height of the segment is uniform in height.
- the area formed by bending the segment included in the height uniformity section along the radial direction of the assembly has a ratio of the thickness of the uncoated part of the second bent surface area to the height of the segment of 0.5 % to 13%.
- the welding region of the second current collector may have a welding strength of 2 kgf/cm 2 or more.
- the welding region of the first current collector may overlap a partial region of the first bent surface region in which the thickness of the first uncoated portion is 100 ⁇ m to 975 ⁇ m by 50% or more.
- the welding area of the second current collector may overlap a partial area of the second bent surface area where the thickness of the second uncoated part is 50 ⁇ m to 780 ⁇ m by 50% or more.
- the welding region of the first current collector and the welding region of the second current collector plate extend in the radial direction of the electrode assembly from a position spaced apart by the same distance based on the core center of the electrode assembly.
- an extended length of the welding region of the first current collector may be longer than an extended length of the welding region of the second current collector.
- the technical problem may be achieved by a battery pack including the above-described battery and a vehicle including the same.
- a region where 10 or more uncoated areas overlap in the radial direction of the electrode assembly is sufficiently secured to increase welding output, but damage to the separator or active material layer is increased.
- the electrolyte injection process and welding of the battery housing and the current collector can be carried out easily.
- An electrode assembly having improved energy density and reduced resistance may be provided by directly welding the bent surface region of the uncoated region to the current collector instead of the strip-shaped electrode tab.
- a battery having a structure having a low internal resistance and improved welding strength between a current collector and an uncoated region, a battery pack including the same, and a vehicle.
- the present invention may have various other effects, which will be described in each embodiment, or the corresponding description will be omitted for effects that can be easily inferred by those skilled in the art.
- 1 is a plan view showing the structure of an electrode plate used for manufacturing a conventional tab-less cylindrical battery.
- FIG. 2 is a view showing the electrode plate winding process of the conventional tab-less cylindrical battery.
- FIG 3 shows a process in which a current collector is welded to a bent surface region of an uncoated region in a conventional tab-less cylindrical battery.
- FIG. 4 is a plan view showing the structure of an electrode plate according to an embodiment of the present invention.
- 5 is a view showing the definition of the width, height, and spacing pitch of the segment according to an embodiment of the present invention.
- FIG. 6 is a view for explaining the overlapping condition of the fragments according to an embodiment of the present invention.
- FIG. 7A and 7B are views illustrating an upper cross-sectional structure and a lower cross-sectional structure of an electrode assembly before the bent structure of the uncoated region is formed, respectively, according to an embodiment of the present invention.
- 8A and 8B are a cross-sectional view and a perspective view of an electrode assembly in which a bent surface area is formed while an uncoated region is bent, respectively, according to an embodiment of the present invention.
- FIG. 9A shows that, in an electrode assembly having a radius of 22 mm included in a cylindrical battery having a form factor of 4680, when the fragments of the first electrode do not overlap in the circumferential direction and are bent from the outer periphery to the core, the fragments overlap in the radial direction. It is a cross-sectional view showing the bent surface area formed while
- FIG. 9b shows the fragments in the radial and circumferential directions when the fragments of the first electrode overlap in the circumferential direction and are bent from the outer periphery to the core in an electrode assembly having a radius of 22 mm included in a cylindrical battery having a form factor of 4680; It is a cross-sectional view showing the bent surface area formed by overlapping.
- FIG. 10 is a cross-sectional view taken along the Y-axis direction of the cylindrical battery according to an embodiment of the present invention.
- FIG. 11 is a cross-sectional view taken along the Y-axis direction of a cylindrical battery according to another embodiment of the present invention.
- FIG. 12 is a plan view illustrating a structure of a first current collector according to an embodiment of the present invention.
- FIG. 13 is a perspective view illustrating a structure of a second current collector according to an embodiment of the present invention.
- FIG. 14 is a plan view illustrating a state in which a plurality of cylindrical batteries are electrically connected according to an embodiment of the present invention.
- FIG. 15 is a partially enlarged plan view illustrating in detail electrical connection of a plurality of cylindrical batteries in FIG. 14 .
- 16 is a view showing a battery pack including a cylindrical battery according to an embodiment of the present invention.
- 17 is a view showing a vehicle including a battery pack according to an embodiment of the present invention.
- substantially identical may include deviations considered to be low in the art, for example, deviations within 5%. Also, uniformity of a certain parameter in a predetermined region may mean uniformity in terms of an average.
- first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another, and unless otherwise stated, the first component may be the second component, of course.
- top (or bottom) of a component or “top (or below)” of a component means that any component is disposed in contact with the top (or bottom) surface of the component, as well as , may mean that other components may be interposed between the component and any component disposed on (or under) the component.
- each component when it is described that a component is “connected”, “coupled” or “connected” to another component, the components may be directly connected or connected to each other, but other components are “interposed” between each component. It is to be understood that “or, each component may be “connected”, “coupled” or “connected” through another component.
- a direction along the longitudinal direction of the winding axis of the electrode assembly wound in a jelly roll shape is referred to as an axial direction (Y).
- the direction surrounding the winding shaft is referred to as a circumferential direction or a circumferential direction (X).
- a direction close to or away from the take-up shaft is referred to as a radial direction.
- a direction closer to the take-up shaft is referred to as a centripetal direction
- a direction away from the take-up shaft is referred to as a centrifugal direction.
- the electrode assembly is a jelly roll type electrode assembly having a structure in which first and second electrodes having a sheet shape and a separator interposed therebetween are wound around one axis.
- the electrode assembly may include any winding structure well known in the art.
- At least one of the first electrode and the second electrode includes an uncoated region on which the active material is not coated at the long side end in the winding direction. At least a portion of the uncoated region is used as an electrode tab by itself.
- FIG. 4 is a plan view showing the structure of the electrode 40 according to the embodiment of the present invention.
- the electrode 40 includes a current collector 41 made of a metal foil and an active material layer 42 .
- the metal foil may be aluminum or copper, and is appropriately selected according to the polarity of the electrode 40 .
- the active material layer 42 is formed on at least one surface of the current collector 41 , and includes the uncoated portion 43 at the long side end of the current collector 41 .
- the uncoated area 43 is an area where the active material is not coated.
- An insulating coating layer 44 may be formed at a boundary between the active material layer 42 and the uncoated region 43 . At least a portion of the insulating coating layer 44 is formed to overlap the boundary between the active material layer 42 and the uncoated region 43 .
- the insulating coating layer 44 may include a polymer resin, and may include an inorganic filter such as Al 2 O 3 .
- the area of the uncoated area 43 on which the insulating coating layer 44 is formed also corresponds to the uncoated area 43 because there is no active material layer 42 .
- the bent portion of the uncoated portion 43 of the electrode 40 may include a plurality of segment pieces 61 .
- the height of the plurality of segment pieces 61 may be increased step by step from the core side to the outer circumference side.
- the section in which the height is gradually increased is an area remaining except for the uncoated area (Core-side uncoated area A) adjacent to the core side of the electrode assembly.
- the core-side uncoated portion A has a relatively lower height than the other portions.
- the fragment 61 may be notched with a laser.
- the segment 61 may be formed by a known metal foil cutting process such as ultrasonic cutting or punching.
- each segment 61 When the electrode 40 is wound, each segment 61 may be bent at the point of the bending line 62 in the radial direction of the electrode assembly, for example, toward the core.
- the core refers to the cavity at the center of the winding of the electrode assembly.
- Each segment 61 has the shape of a geometric figure with the bending line 62 as the base.
- the width of the lower part may be greater than the width of the upper part.
- the width of the lower part may increase gradually or stepwise (not shown) toward the upper part.
- the geometric figure may have a trapezoidal shape.
- the geometric figure may have a form in which at least one straight line, at least one curve, or a combination thereof is connected.
- the geometric figure may be a polygon, such as a triangle, a quadrilateral, or a balanced quadrilateral.
- the geometric figure may have an arc shape, such as a semicircle, a semiellipse, or the like.
- the lower end of the cut groove between the fragments 61 (the portion indicated by D4 in FIG. 5) and It is preferable to leave a predetermined gap between the active material layers 42 . This is because stress is concentrated near the lower end of the cutting groove when the uncoated region 43 is bent.
- the gap is preferably 0.2 to 4 mm.
- the plurality of segment pieces 61 may form a plurality of segment segments while going from the core side to the outer circumference side.
- the width, height, and spacing pitch of segments belonging to the same segment group may be substantially the same.
- FIG. 5 is a view showing the definition of the width, height, and spacing pitch of the segment 61 according to an embodiment of the present invention.
- a cutting groove 63 is formed between the segment pieces 61 .
- the lower edge of the cutting groove 63 has a round shape. That is, the cut groove 63 includes a substantially straight bottom portion 63a and a round portion 63c.
- the round portion 63c connects the bottom portion 63a and the lateral side 63b of the segment 61 .
- the bottom portion 63a of the cut groove 63 may be replaced with an arc shape. In this case, the side edges 63b of the segment 61 may be smoothly connected by the arc shape of the bottom portion 63a.
- the radius of curvature of the round portion 63c may be greater than 0 and less than or equal to 0.5 mm, more preferably greater than or equal to 0 and less than or equal to 0.1 mm. More preferably, the round portion 63c may have a radius of curvature of 0.01 mm to 0.05 m. When the radius of curvature of the round portion 63c satisfies the above numerical range, it is possible to prevent cracks from occurring in the lower portion of the cutting groove 63 while the electrode 40 is driven in a winding process or the like.
- the width (D1), height (D2), and spacing pitch (D3) of the segmental piece 61 prevent tearing of the uncoated area (43) during bending of the uncoated area (43) and improve the welding strength of the uncoated area (D3).
- 43) is designed to sufficiently increase the number of layers and prevent abnormal deformation of the uncoated area 43 as much as possible. Abnormal deformation means that the uncoated area below the bending point does not maintain a straight state and is deformed irregularly without hesitation.
- the bending point may be a point spaced apart from the lower end of the cutting groove 63 indicated by D4 by 2 mm or less, preferably by 1 mm or less.
- the width D1 of the segment 61 is a length between two points where two straight lines extending from both side sides 63b of the segment 61 and a straight line extending from the bottom 63a of the cut groove 63 meet. is defined as The height of the segment 61 is defined as the shortest distance between the uppermost side of the segment 61 and a straight line extending from the bottom 63a of the cut groove 63 .
- the spacing pitch D3 of the segment 61 is between two points where a straight line extending from the bottom 63a of the cutting groove 63 and a straight line extending from two sidewalls 63b connected to the bottom 63a meet. defined by length.
- the width D1 of the segment 61 may be adjusted in the range of 1 mm to 11 mm. If D1 is less than 1 mm, a region or an empty space (gap) that does not overlap enough to sufficiently secure welding strength when the fragment 61 is bent toward the core is generated. On the other hand, when D1 exceeds 11 mm, when the segment 61 is bent, there is a possibility that the uncoated area 43 near the bending point D4 is torn by stress. The bending point D4 may be spaced apart from the bottom 63a of the cutting groove 63 . The separation distance may be 2 mm or less, preferably 1 mm or less. In addition, the height of the segment 61 may be adjusted in the range of 2 mm to 10 mm.
- D2 When D2 is less than 2 mm, a region or an empty space (gap) that does not overlap enough to sufficiently secure welding strength when the fragment 61 is bent toward the core is generated.
- D2 exceeds 10 mm, it is difficult to manufacture an electrode plate while uniformly maintaining the flatness of the uncoated area in the winding direction (X). In other words, the height of the uncoated area increases and a swell occurs.
- the spaced pitch D3 of the segment 61 may be adjusted in the range of 0.05 mm to 1 mm. If D3 is less than 0.05 mm, cracks may occur in the uncoated region 43 near the lower end of the cut groove 63 due to stress when the electrode 40 is driven in a winding process or the like. On the other hand, when D3 exceeds 1 mm, a region or an empty space (gap) in which the fragments 61 do not overlap each other or an empty space (gap) may occur to sufficiently secure welding strength when the fragments 61 are bent.
- the spacing pitch D3 is more preferably set to 0.5mm or more.
- D3 is 0.5 mm or more, even if the electrode 40 travels at a speed of 100 mm/sec or more under a tension of 300 gf or more in a winding process, etc., it is possible to prevent cracks from occurring in the lower part of the cutting groove 63 .
- the width d A of the uncoated region A on the core side is designed by applying the condition that the core of the electrode assembly is not covered by 90% or more when the segment pieces 61 are bent toward the core side.
- the width d A of the uncoated region A on the core side may increase in proportion to the bending length of the segment 61 of the group 1 .
- the bending length corresponds to the height of the segment 61 with respect to the bending point (62 in FIG. 4 ).
- the width d A of the uncoated region A on the core side is 180 mm to 350 mm depending on the diameter of the electrode assembly core. can be set to
- the ratio d A /L e of the width d A of the core-side uncoated region A to the long side length L e of the electrode 40 may be 1% to 30%.
- the electrode 40 has a fairly long length of 3000 mm to 5000 mm, so that the core-side uncoated region A can be designed to be sufficiently long.
- Cylindrical batteries with a form factor of 1865 or 2170 have an electrode plate length of 600 mm to 1200 mm. In a typical cylindrical battery, it is difficult to design the ratio d A /L e within the above numerical range.
- the width of each segment group may be designed to constitute the same winding turn of the electrode assembly.
- each segment group may be designed to constitute a plurality of winding turns of the electrode assembly.
- the width and/or height and/or spacing pitch of the segments 61 belonging to the same segment group may increase or decrease gradually and/or stepwise and/or irregularly within or between groups.
- Groups 1 to 7 are only an example of a segment group.
- the number of groups and the number of segment pieces 61 included in each group can disperse stress as much as possible in the bending process of the uncoated area 43 and ensure sufficient welding strength, and between the side edges 63b of the segment piece 61 .
- the gap is minimized and the fragments 61 do not interfere with each other and may be adjusted to overlap in multiple layers along the radial direction of the electrode assembly.
- some groups of segments may be removed.
- the height of the uncoated region of the portion from which the fragment is removed may be the same as the height of the uncoated region A on the core side.
- the electrode 40 may be divided into a height variable section in which the height of the segment 61 changes along the long side and a uniform height section in which the height of the segment 61 is uniform.
- variable height section is a section corresponding to groups 1 to 7
- uniform height section is a section located on the outer periphery of the group 7 .
- the width d A of the core-side uncoated region A may be 180 to 350 mm.
- the width of the group 1 may be 35 to 55% of the width of the uncoated region A on the core side.
- the width of the group 2 may be 120 to 150% of the width of the group 1.
- the width of the group 3 may be 110 to 135% of the width of the group 2 .
- the width of the group 4 may be 75 to 90% of the width of the group 3.
- the width of the group 5 may be 120 to 150% of the width of the group 4.
- the width of group 6 may be 100 to 120% of the width of group 5.
- the width of the group 7 may be 90 to 120% of the width of the group 6.
- the reason that the width of groups 1 to 7 does not show a constant increase or decrease pattern is that the width of the fragments gradually increases from group 1 to group 7, but the number of fragments included in the group is limited to an integer number and the thickness of the electrode 40 This is because it has a deviation along the winding direction (X). Accordingly, the number of segments may be reduced in a particular segment group. Therefore, the width of the group may exhibit an irregular change pattern as in the above example from the core side to the outer peripheral side.
- Group 4 to Group 6 correspond to this.
- the width ratio of group 5 to group 4 is 120-150%, and the width ratio of group 6 to group 5 is 100-120%, and the value is less than 120-150%.
- the lower inner angle ⁇ of the plurality of segment pieces 61 may increase from the core side to the outer circumferential side.
- the lower inner angle ⁇ corresponds to an angle between a straight line passing through the bending line 62 in FIG. 4 and a straight line (or tangent line) extending from the side side 63b of the segment 61 .
- the left internal angle and the right internal angle may be different from each other.
- the radius of curvature increases.
- stress generated in the radial and circumferential directions when the segment 61 is bent may be relieved.
- the lower inner angle ⁇ increases, when the segment 61 is bent, the area overlapping with the inner segment 61 and the number of layers of the segment 61 are also increased, thereby welding in the radial and circumferential directions. It is possible to ensure uniform strength and form a flat bent surface area.
- the fragments 61 overlap not only in the radial direction of the electrode assembly but also in the circumferential direction.
- a pair of segment pieces 61 adjacent to a winding turn having a radius r with respect to the core center O of the electrode assembly is disposed.
- the width and height of the adjacent segment pieces 61 are substantially the same.
- the lower internal angle ⁇ assumption is an angle when it is assumed that the lateral sides of the segment 61 are substantially parallel.
- the lower interior angle ⁇ assumption is an angle that can be uniquely determined by the arc length L arc corresponding to the lower portion of the segment 61 .
- ⁇ real is an actual lower interior angle when the lateral sides of the adjacent segment pieces 61 intersect each other.
- the segment pieces 61 disposed in the winding turn located at a radius r based on the core center O may overlap each other in the circumferential direction.
- r is the radius of the winding turn in which the segment 61 is disposed with respect to the center of the core of the electrode assembly.
- L arc is the length of an arc (solid line) corresponding to the lower portion (dotted line) of the segment in a circle having r as the radius, and is uniquely determined from the width D1 of the segment 61 .
- the circumferential angle ⁇ of L arc at any winding turn radius r may be 45° or less.
- L arc is greater than 1 mm, which is the lower limit of D1, and has a length less than or equal to (45/360)*(2 ⁇ r).
- the circumferential angle ⁇ may vary depending on the radius of the winding turn in which the segment 61 is located.
- the circumferential angle ⁇ of the segment 61 may increase gradually or stepwise along the radial direction of the electrode assembly while satisfying the numerical range condition, or vice versa.
- the circumferential angle ⁇ of the segment 61 may increase gradually or stepwise along the radial direction of the electrode assembly while satisfying the above numerical range condition and then decrease gradually or stepwise, or vice versa.
- the circumferential angle ⁇ of the segment 61 may be maintained substantially the same along the radial direction of the electrode assembly while satisfying the numerical range condition.
- the circumferential angle ⁇ of the segment 61 is 45 degrees or less, and the width D1 in the winding direction of the segment 61 is 1 m to 11 mm.
- L arc is 10.5 mm, and the ⁇ assumption is about 75 degrees.
- L arc is 10.9 mm, and the ⁇ assumption is about 77.5 degrees.
- ⁇ real / ⁇ assumption ⁇ 1 can be defined as the overlap ratio of the segmental pieces 61 in the circumferential direction.
- the overlapping ratio of the fragments 61 is preferably greater than 0 and less than or equal to 0.05.
- the ⁇ assumption is the angle uniquely determined by the arc L arc at the turn radius r.
- the degree of overlap of the fragments 61 increases in proportion to the overlap ratio.
- the number of stacks of the segment pieces 61 may be further increased. Examples for this will be described later.
- the radius of the core is 4 mm
- the height of the segment closest to the core is 3 mm
- the radius of the electrode assembly is from 7 mm
- the lower inner angle of the segment 61 may be increased step by step in the range of 60 degrees to 85 degrees.
- the radius range and the lower inner angle range may be determined from design specifications of the form factor and the diameter of the core, the height of the segment closest to the core, the width D1 of the segment 61, and the overlap ratio.
- the condition for overlapping the fragments may be changed as follows. That is, when an imaginary circle passing through a pair of adjacent segments 61 with respect to the core center O of the electrode assembly 40 is drawn as shown in (b) of FIG. 6 , a circular arc e 1 passing through each segment When -e 2 and e 3 - e 4 - overlap each other, the pair of adjacent segments 61 may overlap each other.
- the overlap rate of the segment 61 is the maximum value among the ratios of the overlapping arcs e 2 - e 3 to the length of the arcs e 1 - e 2 (or e 3 - e 4 ) when a plurality of virtual circles with different radii are drawn. can be defined.
- the overlap ratio of the fragments 61 may be greater than 0 and less than or equal to 0.05.
- the section where the stress is concentrated applies a round shape (eg, semicircle, semi-ellipse, etc.) advantageous for stress distribution, and the section where the stress is relatively low is a polygonal shape (eg, a square, trapezoid, equilibrium) with a wide area as much as possible. quadrilateral, etc.) can be applied.
- a round shape eg, semicircle, semi-ellipse, etc.
- the section where the stress is relatively low is a polygonal shape (eg, a square, trapezoid, equilibrium) with a wide area as much as possible. quadrilateral, etc.) can be applied.
- the uncoated region segment structure can also be applied to the core-side uncoated region (A).
- the segmental structure is applied to the core-side uncoated area (A)
- the end of the core-side uncoated area (A) is bent toward the outer periphery. Reverse forming may occur. have. Accordingly, there is no segmental structure in the uncoated region A on the core side, or the width and/or height and/or spacing pitch of the segment 61 in consideration of the radius of curvature of the core even if the segmental structure is applied at a level at which reverse forming does not occur It is preferable to adjust to
- the electrode plate structure of the above-described embodiments (modified examples) may be applied to the first electrode and/or the second electrode having different polarities included in the jelly roll type electrode assembly.
- a conventional electrode plate structure may be applied to the other one.
- the electrode plate structures applied to the first electrode and the second electrode are not identical to each other and may be different.
- any one of the embodiments (modified examples) is applied to the first electrode and a conventional electrode structure (refer to FIG. 1 ) is applied to the second electrode can be applied.
- any one of the embodiments (modified examples) is selectively applied to the first electrode and the embodiments (modified examples) are applied to the second electrode Any one of them may be selectively applied.
- the positive active material coated on the positive electrode and the negative active material coated on the negative electrode may be used without limitation as long as the active material is known in the art.
- the positive active material has the general formula A[A x M y ]O 2+z (A includes at least one element of Li, Na, and K; M is Ni, Co, Mn, Ca, Mg, Al, at least one element selected from Ti, Si, Fe, Mo, V, Zr, Zn, Cu, Al, Mo, Sc, Zr, Ru, and Cr; x ⁇ 0, 1 ⁇ x+y ⁇ 2, 0.1 ⁇ z ⁇ 2; stoichiometric coefficients x, y and z are selected such that the compound remains electrically neutral).
- the positive active material includes an alkali metal compound xLiM 1 O 2 (1x)Li 2 M 2 O 3 (M 1 comprising at least one element having an average oxidation state 3; M; 2 includes at least one element having an average oxidation state 4; 0 ⁇ x ⁇ 1).
- the positive active material may have the general formula Li a M 1 x Fe 1x M 2 y P 1y M 3 z O 4z (M 1 is Ti, Si, Mn, Co, Fe, V, Cr, Mo, Ni, At least one element selected from Nd, Al, Mg and Al M 2 is Ti, Si, Mn, Co, Fe, V, Cr, Mo, Ni, Nd, Al, Mg, Al, As, Sb, Si , Ge, contains at least one element selected from V and S; M 3 contains a halogen element optionally including F; 0 ⁇ a ⁇ 2, 0 ⁇ x ⁇ 1, 0 ⁇ y ⁇ 1, 0 ⁇ z ⁇ 1; stoichiometric coefficients a, x, y and z are chosen such that the compound remains electrically neutral), or Li 3 M 2 (PO 4 ) 3 [M is Ti, Si, Mn, Fe, Co, V, Cr , Mo, Ni, Al, including at least one element selected from Mg
- the positive electrode active material may include primary particles and/or secondary particles in which the primary particles are aggregated.
- the negative active material may be a carbon material, lithium metal or a lithium metal compound, silicon or a silicon compound, tin or a tin compound.
- a metal oxide having a potential of less than 2V, such as TiO 2 and SnO 2 may also be used as the negative electrode active material.
- As the carbon material both low-crystalline carbon, high-crystalline carbon, and the like may be used.
- the separator is a porous polymer film, for example, a porous polymer film made of a polyolefin-based polymer such as an ethylene homopolymer, a propylene homopolymer, an ethylene/butene copolymer, an ethylene/hexene copolymer, or an ethylene/methacrylate copolymer. Or they can be used by laminating them.
- the separator may be a conventional porous nonwoven fabric, for example, a nonwoven fabric made of high melting point glass fiber, polyethylene terephthalate fiber, or the like.
- At least one surface of the separator may include a coating layer of inorganic particles. It is also possible that the separation membrane itself is made of a coating layer of inorganic particles. Particles constituting the coating layer may have a structure combined with a binder so that an interstitial volume exists between adjacent particles.
- the inorganic particles may be formed of an inorganic material having a dielectric constant of 5 or more.
- the inorganic particles are Pb(Zr,Ti)O 3 (PZT), Pb 1x La x Zr 1y Ti y O 3 (PLZT), PB(Mg 3 Nb 2/3 )O 3 PbTiO 3 ( PMNPT), BaTiO 3 , hafnia(HfO 2 ), SrTiO 3 , TiO 2 , Al 2 O 3 , ZrO 2 , SnO 2 , CeO 2 , MgO, CaO, ZnO and Y 2 O 3 At least one selected from the group consisting of material may be included.
- the electrode assembly according to the embodiment is a jelly roll type electrode assembly 80 in which the electrode 40 of the embodiment is applied to a first electrode (anode) and a second electrode (cathode).
- the present invention is not limited by the specific type of the electrode assembly.
- FIGS. 7A and 7B are views illustrating an upper cross-sectional structure and a lower cross-sectional structure of the electrode assembly 80 before the bent structure of the uncoated regions 43a and 43a' is formed, respectively, according to an embodiment of the present invention.
- FIGS. 8A and 8B are cross-sectional and perspective views of the electrode assembly 80 in which the uncoated regions 43a and 43a' are bent and the bent surface area F is formed, respectively, according to an embodiment of the present invention.
- the electrode assembly 80 may be manufactured by the winding method described with reference to FIG. 2 .
- the protrusion structure of the uncoated regions 43a and 43a' extending out of the separation membrane is illustrated in detail, and the detailed illustration of the winding structure of the separation membrane is omitted.
- the uncoated region 43a protruding upward of the electrode assembly 80 extends from the first electrode 40 .
- the uncoated region 43a ′ protruding downward of the electrode assembly 80 extends from the second electrode 40 ′.
- the end position of the separator is indicated by a dotted line.
- a pattern in which the height of the uncoated regions 43a and 43a' changes is schematically illustrated. That is, the height of the uncoated regions 43a and 43a' may vary irregularly depending on the position where the cross-section is cut. For example, when the sides of the fragment 61 having a trapezoidal shape are cut, the height of the uncoated region in the cross section is lower than the height of the fragment 61 (D2 in FIG. 4 ). In addition, the uncoated regions 43a and 43a' are not shown at the point where the cut groove (63 in FIG. 5) is cut.
- the uncoated region 43a ′ of the second electrode 40 ′ may have substantially the same characteristics as the uncoated region 43a of the first electrode 40 .
- the uncoated regions 43a and 43a' of the first electrode 40 and the second electrode 40' are bent in a radial direction to form a bent surface area (F). to form
- the number of winding turns index k (a natural number of 1 to n 1 ) of the k-th winding turn is the total number of winding turns.
- the radial length of the relative radial position R 1,k section in which the number of stacks of the uncoated area 43a is 10 or more in the radial direction is It is more than 30% of the radial length of the included winding turns.
- the relative radial position of the first winding turn is 1/n 1 because the number of winding turns index is 1.
- the relative radial position of the k-th winding turn is k/n 1 .
- the relative radial position of the last n 1st winding turn is 1. That is, the relative radial position increases from 1/n 1 to 1 from the core side to the outer periphery of the electrode assembly 80 .
- the number of winding turns index k (a natural number of 1 to n 2 ) at the position of the k-th number of winding turns is the total number of turns.
- the value calculated by dividing by the number of winding turns n 2 is defined as the relative radial position R 2,k of the k-th winding turn
- the radial length of the relative radial position R 2,k section in which the number of stacked parts of the uncoated area is 10 or more in the segmental direction It is 30% or more of the radial length of the winding turn in which they are arranged.
- the relative radial position of the first winding turn is 1/n 2 because the number of winding turns index is 1.
- the relative radial position of the k-th winding turn is k/n 2 .
- the relative radial position of the last n 2nd winding turn is 1. That is, the relative radial position increases from 1/n 2 to 1 from the core side to the outer periphery of the electrode assembly 80 .
- bent surface areas F are formed on the upper and lower portions of the electrode assembly 80 as shown in FIGS. 8A and 8B .
- the plurality of segment pieces 61 overlap in multiple layers along the radial direction while being bent toward the core C of the electrode assembly 80 .
- the number of stacked segments 61 may be defined as the number of segment segments 61 that intersect the imaginary line when an imaginary line is drawn in the winding axis direction Y at any radial point on the bending surface area F. .
- the number of stacked fragments 61 includes the fragments 61 in order to sufficiently increase the welding strength between the bent surface area F and the current collector and to prevent damage to the separator and the active material layer during the welding process.
- the radial length (R 1 ) of the wound turns there may be 10 or more in a radius of at least 30% or more.
- the current collector may be welded to the bent surface area F of the uncoated areas 43a and 43'a with a laser.
- a laser Alternatively, other known welding techniques such as resistance welding may be used.
- the laser penetrates through the overlapping regions of the uncoated regions 43a and 43a ′ and penetrates to the inside of the electrode assembly 80 to damage the separator and the active material layer. Therefore, in order to prevent laser penetration, it is preferable to increase the number of layers of the uncoated areas 43a and 43a' in the welding area to a certain level or more.
- the height of the segment 61 In order to increase the number of layers of the uncoated regions 43a and 43a', the height of the segment 61 must be increased. However, when the height of the segment 61 is increased, swell may occur in the uncoated regions 43a and 43a' during the manufacturing process of the electrode 40 . Accordingly, the height of the segment 61 is preferably adjusted to an appropriate level, preferably from 2 mm to 10 mm.
- a radius section in which the number of layers of the fragments 61 is 10 or more is designed to be 30% or more compared to R 1 , and the area in which the fragments 61 are overlapped by 10 or more and the current collector are laser welded. Even if the output of the coating is increased, the overlapping portion of the uncoated region sufficiently masks the laser to prevent damage to the separator and the active material layer by the laser. In addition, since the number of layers of the segment 61 is large in the area to which the laser is irradiated, the welding beads are formed with sufficient volume and thickness. Therefore, the welding strength can be sufficiently secured and the resistance of the welding interface can also be lowered.
- the output of the laser may be determined by a desired welding strength between the bending surface area F and the current collector.
- Weld strength increases in proportion to the number of layers of uncoated areas 43a and 43a'. This is because the volume of the welding beads formed by the laser increases as the number of stacks of the uncoated regions 43a and 43a' increases.
- the welding strength may be 2 kgf/cm 2 or more, more preferably 4 kgf/cm 2 or more.
- the welding strength meets the above numerical range, even if severe vibration is applied to the electrode assembly 80 along the winding axial direction and/or the radial direction, the physical properties of the welding interface are not deteriorated, and the volume of the welding beads is sufficient so that the welding interface resistance can also be reduced.
- the output of the laser for implementing the welding strength condition is different depending on the laser equipment, and may be appropriately adjusted in the range of 250W to 320W or 40% to 100% of the maximum laser output specification.
- Weld strength may be defined as the tensile force per unit area of the current collector (kgf/cm 2 ) when the current collector starts to separate from the bending surface area F (kgf/cm 2 ). Specifically, after welding of the current collector is completed, a tensile force is applied to the current collector, but the size thereof is gradually increased. When the tensile force increases, the uncoated regions 43a and 43a' begin to separate from the welding interface. At this time, a value obtained by dividing the tensile force applied to the current collector by the area of the current collector is the weld strength.
- the first electrode 40 includes a current collector plate (foil) 41 and an active material coating layer 42 formed on at least one surface thereof, and the electrode current collector 41 has a thickness of 10 ⁇ m to 25 ⁇ m, and an electrode assembly. (80) The interval between the adjacent winding turns in the radial direction may be 200um to 500um.
- the current collector plate 41 may be made of aluminum.
- the second electrode 40 ′ includes a current collector plate (foil) and an active material coating layer formed on at least one surface thereof, the thickness of the current collector plate is 5 to 20 ⁇ m, and between adjacent winding turns in the radial direction of the electrode assembly 80 .
- the interval may be 200 to 500um.
- the current collector plate may be copper.
- the first relative radial position R 1,k* preset from the relative radial position R 1,1 of the first electrode 40 The height of the uncoated part of the section to may be smaller than the height of the uncoated part of the section from the relative radial position R 1,k*+1 of the number of turns k*+1 to the relative radial position 1 .
- the height of the uncoated area in the section from the relative radial position R 1,1 to the preset first relative radial position R 1,k* corresponds to the uncoated area height of the uncoated area A on the core side (see FIG. 4 ).
- the relative radial position 1 is the relative radial position of the outermost wound turn including the segment 61 .
- the uncoated region in the section from the relative radial position R 1,1 to the first relative radial position R 1,k* is formed by overlapping uncoated regions whose heights are bent. It may be lower than the bending surface area (F).
- the uncoated region is not bent toward the core of the electrode assembly 80 . it may not be
- the uncoated region height of the section from the relative radial position R 2,1 to the preset first relative radial position R 2,k* is the winding structure. It may be smaller than the height of the uncoated part of the section from the relative radius position R 2,k*+1 to the relative radius position 1 of the turn k*+1.
- the relative radius position 1 is the relative radius of the outermost wound turn including the segment 61 . It can correspond to location.
- the uncoated area may have a height lower than the bent surface area F formed by overlapping the bent uncoated areas.
- the uncoated portion of the section from the relative radial position R 2,1 to the first relative radial position R 2,k* may not be bent toward the core of the electrode assembly.
- the height of the uncoated portion in the section from the relative radial position R 2,1 to the first relative radial position R 2,k* is the relative radial position R 2,k*+ It may be smaller than the uncoated part height of the section from 1 to the relative radial position 1 and may not be bent toward the core side.
- the uncoated region bending length fd 1,k*+1 of the relative radial position R 1,k*+1 is the relative radial position R 1,1 to the relative radial position R 1,k * can be shorter than the radial echo length up to . Accordingly, the core C of the electrode assembly 80 may not be shielded by the bent portion of the uncoated region 43a positioned in the range from the relative radial position R 1,k*+1 to the relative radial position 1 .
- the core C of the electrode assembly 80 has a non-woven fabric positioned in the range of the relative radial position R 1,k*+1 to the relative radial position 1 by 90% or more based on its radius r c . It may not be shielded by the bent portion of the portion 43a. That is, in the core C, a radius section corresponding to at least 0 to 0.9r c may not be shielded by the bent portion of the uncoated portion 43a.
- the bending length fd 1,k* +1 of the uncoated region 43a located at the relative radial position R 1,k*+ 1, the radius of the core (r c ), and the relative radial position R 1,k*+1 are The distance (d 1,k*+1 ) spaced apart from the center of the core (C) may satisfy Equation 2 below.
- the uncoated portion of the section from the relative radial position R 2,1 to the first relative radial position R 2,k* has a height of the relative radial position R 2,k*+ It may be smaller than the uncoated part height of the section 1 to the relative radius position 1 and may not be bent toward the core side.
- the bending length fd 2,k*+1 of the uncoated portion positioned at the relative radial position R 2 ,k*+1 is the relative radial position R 2,1 to the first relative radius. It may be shorter than the length to position R 2,k* . Accordingly, the core C of the electrode assembly 80 may not be shielded by the bent portion of the uncoated region positioned in the range from the relative radial position R 2,k*+1 to the relative radial position 1 .
- the core C of the electrode assembly 80 has a bending of the uncoated region 43a ′ located at a relative radial position R 2,k*+1 of 90% or more based on its radius r c . may not be shielded by wealth.
- the bending length fd 2,k* +1 of the uncoated region 43a' located at the relative radial position R 2,k* +1 , the radius of the core r c , and the relative radial position R 2,k*+1 may satisfy Equation 3 below.
- the first electrode 40 is uncoated from the second relative radial position R 1,k@+1 of the preset k@+1th winding turn to the relative radial position 1
- the segment is divided into a plurality of segment segments 61 , and the height of the plurality of segment segments 61 may be substantially equal from the relative radial position R 1,k@+1 to the relative radial position 1 .
- the uncoated portion 43a in the section from the relative radial position R 1,k*+1 to the second relative radial position R 1,k@ of the preset k@th winding turn. is divided into a plurality of segment pieces 61 and the height thereof may be increased step by step or gradually toward the outer periphery. Accordingly, the section from the relative radial position R 1,k*+1 to R 1,k@ corresponds to the variable height section.
- the radial length of the variable height section of the segment is defined as H 1
- the wound structure of the first electrode 40 excluding the core C is defined as H 1
- the height variable section ratio H 1 /(Rr c )
- R may be 22 mm
- the core radius r c may be 5 mm
- Rr c may be 17 mm.
- the height of the fragment 61 may be changed in 8 steps from 2 mm to 10 mm in a radius of 7 mm to 15 mm. After the radius of 15 mm, the height of the segment 61 is maintained at 10 mm. H 1 is 8mm, so the height variable section ratio may be 47% (8mm/17mm).
- Example 2 R and r c are the same as in Example 1.
- the height of the fragment 61 may be changed in 7 steps from 2 mm to 9 mm in a radius of 7 mm to 14 mm. After the radius of 14 mm, the height of the segment 61 is maintained at 9 mm. H 1 is 7mm, so the height variable section ratio may be 41% (7mm/17mm).
- Example 3 R and r c are the same as in Example 1.
- the height of the fragment 61 may be changed stepwise in 6 steps from 2 mm to 8 mm in a radius of 7 mm to 13 mm. After the radius of 13 mm, the height of the segment 61 is maintained at 8 mm. H 1 is 6mm, so the height variable section ratio may be 35% (6mm/17mm).
- Example 4 R and r c are the same as in Example 1.
- the height of the fragment 61 may be changed stepwise in 5 steps from 2 mm to 7 mm in a radius of 7 mm to 12 mm. After the radius of 12 mm, the height of the segment 61 is maintained at 7 mm. Since H 1 is 5 mm, the height variable section ratio may be 29% (5 mm/17 mm).
- Example 5 R and r c are the same as in Example 1.
- the height of the fragment 61 may be changed stepwise in 4 steps from 2 mm to 6 mm in a radius of 7 mm to 11 mm. After the radius of 11 mm, the height of the segment 61 is maintained at 6 mm. H 1 is 4mm, so the height variable section ratio may be 24% (4mm/17mm).
- Example 6 R and r c are the same as in Example 1.
- the height of the fragment 61 may be changed stepwise in three steps from 2 mm to 5 mm in a radius of 7 mm to 10 mm. After the radius of 10 mm, the height of the segment 61 is maintained at 5 mm. H 1 is 3mm, so the height variable section ratio may be 18% (3mm/17mm).
- Example 7 R and r c are the same as in Example 1.
- the height of the fragment 61 may be changed in two steps from 2 mm to 4 mm in a radius of 7 mm to 9 mm. After the radius of 9 mm, the height of the segment 61 is maintained at 4 mm. H 1 is 2mm, so the height variable section ratio may be 12% (2mm/17mm).
- Example 8 R and r c are the same as in Example 1.
- the height of the fragment 61 may be changed in stages from 2 mm to 3 mm in a radius of 7 mm to 8 mm in one step. After the radius of 8 mm, the height of the segment 61 is maintained at 3 mm. Since H 1 is 1 mm, the ratio of the height variable section may be 6% (1 mm/17 mm).
- the numerical range of the height variable section ratio may vary according to the size of the radius (r c ) of the core (C). Since the calculation method is similar to the above, only the results are disclosed.
- the height of the fragment in a radius of 6mm to 14mm is in the range of 2mm to 10mm
- the interval ratio may be 6% to 44%.
- the height variable section ratio may be 5% to 40%.
- the height variable section ratio is 5% to 47%.
- the radius of the electrode assembly 80 is constant, the lower and upper limits of the ratio of the height variable section decrease accordingly as the radius r c of the core C decreases.
- the upper and lower limits of the ratio of the height variable section may be changed by the height change width of the segment 61 and the number of height changes per 1 mm increase in radius.
- the lower and upper limits of the ratio height variable section ratio are 1% and 9%, respectively.
- the lower and upper limits of the height variable section ratio are 6% and 56%, respectively.
- the ratio of the height variable section is 1% to 56%.
- the radial length ratio of the relative radial position in which the number of stacks of the uncoated region 40 is 10 or more is the radius of the wound turns including the segment 61 .
- the direction length (R 1 ) may be at least 30% or more. As will be described later, such a configuration provides useful effects in terms of welding strength and resistance of the current collector.
- the relative radial position R 2,k*+1 to the second relative radial position R 2,k of the preset k@th winding turn R 2,k is divided into a plurality of segment pieces 61, and the height thereof may be increased step by step or gradually toward the outer periphery. Accordingly, the section from the relative radial position R 2,k*+1 to R 2,k@ corresponds to the variable height section.
- the radial length of the variable height section is defined as H 2 , and H compared to the radius Rr c of the wound structure of the second electrode 40 ′ except for the core C.
- the ratio of 2 is defined as the ratio of the variable height section (H 2 /(Rr c ))
- it is preferable that the ratio of the variable height section is 1% to 56% like the first electrode.
- the ratio of the relative radial position of the uncoated region 40 with 10 or more layers includes the segment 61 .
- the radial length (R 2 ) of the winding turns may be at least 30% or more.
- the uncoated portion of the second electrode 40' includes a plurality of segment segments. 61 , and the height of the plurality of segment segments 61 may be substantially equal from the relative radial position R 2,k@+1 to the relative radial position 1 .
- the uncoated region 43a bent toward the core is divided into a plurality of segment pieces 61 , and the height of the plurality of segment segments 61 in the winding axial direction and At least one of the widths in the winding direction may be increased gradually or stepwise from the core side to the outer circumferential side individually or in groups.
- the uncoated region 43a ′ bent toward the core is divided into a plurality of segment pieces 61 , and the plurality of segment segments 61 are wound in the direction of the winding axis. At least one of the height and the width in the winding direction may be increased gradually or stepwise from the core side to the outer circumferential side individually or in groups.
- each of the plurality of segment segments 61 has a width of 1 to 11 mm in the winding direction (D1 in FIG. 5).
- D1 in FIG. 5 A height of 2 to 10 mm in the direction of the winding axis (D2 in FIG. 5) condition;
- D3 A height of 2 to 10 mm in the direction of the winding axis
- a predetermined gap may be provided between the bottom of the cut groove of the segment 61 (the portion indicated by D4 in FIG. 5 ) and the active material layer 42 .
- the gap may be 0.2 to 4 mm.
- the plurality of fragments 61 form a plurality of fragment groups as they go from the core side to the outer periphery side. and at least one of a width in a winding direction, a height in a winding axial direction, and a spacing pitch in the winding direction of the fragments belonging to the same fragment group may be the same.
- the segment segments included in each group may constitute at least one winding turn in the winding structure of the electrode assembly 80 .
- the segment pieces included in each group may constitute at least two or more winding turns in the winding structure of the electrode assembly 80 .
- FIG. 9A shows that in the electrode assembly having a radius of 22 mm included in a cylindrical battery having a form factor of 4680, the uncoated portion 43a of the first electrode 40 divided into a plurality of segment pieces 61 is shown from the outer periphery of the core.
- the bent surface area F is formed while bending to the side, and 10 or more uncoated areas 43a are overlapped in a portion of the bent surface area F along the radial direction, and stacked along the radial direction of the electrode assembly 80 .
- the number of stacked uncoated regions 43a in the bent surface area F sequentially increases from the outer periphery of the electrode assembly 80 toward the core and reaches a maximum value, and the maximum value is in a predetermined radius section. It is maintained and decreases by 1 or 2 near the core.
- a radius section near the core may be referred to as a layer reduction section.
- a radial section in which the number of stacks of the uncoated area 43a sequentially increases from the outer periphery of the electrode assembly 80 to a maximum value is defined as a stacking number increase section, and the number of stacks of the uncoated area 43a becomes the maximum value.
- the section maintained and the remaining section near the core are defined as a section with a uniform number of layers. Since the section with a uniform number of stacks includes a section in which the number of stacks of the uncoated region 43a is maintained at the maximum value, the bent surface area F is flatter than the other portions and corresponds to the optimum welding area.
- the uncoated area 43a is divided into trapezoid-shaped segments as shown in FIG. 5, and the uncoated area 43a shows only the upper part of the cut groove 63 based on the bottom 63a. will be.
- the uncoated portion 43a is not shown in the portion corresponding to the cross-section of the cutting groove 63 .
- Points at which the segment pieces 61 are actually bent are not exactly the same, and are spaced apart from the lower end of the cutting groove 63 by a predetermined distance. As the number of overlapping portions of the uncoated region 43a increases toward the core, resistance to overlap occurs. Therefore, it is preferable to perform bending at a point spaced apart from the lower end of the cutting groove 63 by a predetermined distance.
- the separation distance is 2 mm or less, preferably 1 mm or less. If there is a separation distance, the overlap of the segment pieces 61 in the radial direction is better achieved.
- the bent surface area F is formed by overlapping the segment pieces positioned at different winding turns in the radial direction of the electrode assembly 80 .
- the segment pieces 61 do not overlap in the circumferential direction. That is, a gap exists between the lateral sides of the segment 61 as shown in FIG. 6A .
- the condition for the existence of the gap may be satisfied by adjusting the width, height, separation pitch, lower interior angle, and the like of the segment.
- the bent surface area F when the fragments overlap in the circumferential direction will be described later with reference to FIG. 9B .
- the radius r c of the core of the electrode assembly 80 is 4 mm. Also, the height of the fragments starts from 3 mm. No fragments are present in the uncoated region 43a from 4 mm to 7 mm based on the radius of the electrode assembly. That is, the segment is present in a section with a radius of 7 mm to 22 mm among the total radius of 22 mm of the electrode assembly, and the width of the radius section in which the segment 61 is present is 15 mm. If a maximum of 10% of the radius r c of the core is covered by the fragment, the point at which the fragment is placed may be moved toward the core.
- a segment having a height of 3 mm from the winding turn at a point of approximately 7 mm in radius is disposed.
- the height of the segment increases by 1 mm for every 1 mm increase in radius from the core side to the outer periphery from the radius of 7 mm of the wound structure.
- the period of increasing the height of the fragment can be changed in the range of 0.2 mm to 1.2 mm per unit radius (1 mm).
- 9A (a) is a case in which the maximum height of the fragment is 8 mm.
- the fragment is disposed from a point where the radius of the electrode assembly becomes 7 mm from the center of the core. Only then, when a fragment with a height of 3 mm is bent toward the core, it does not cover the core with a radius of 4 mm.
- the height of the segment increases in 5 steps from 3 mm to 8 mm as the radius increases from 7 mm to 12 mm.
- the height of the fragments is maintained at 8 mm with a radius of 12 mm to 22 mm.
- the variable height section of the segment has a radius of 7 mm to 12 mm, and the height variable section ratio is 28% (5/18, rounded off, hereinafter the same).
- 9A (b) is a case in which the maximum height of the fragment is 7 mm. Also in this case, the fragment is disposed from the point where the radius of the electrode assembly becomes 7 mm from the center of the core. Only then, when a fragment with a height of 3 mm is bent toward the core, it does not cover the core with a radius of 4 mm. The height of the segment increases in 4 steps from 3 mm to 7 mm as the radius increases from 7 mm to 11 mm. In addition, the height of the fragment is maintained at 7 mm with a radius of 11 mm to 22 mm. In this embodiment, the variable height section of the segment has a radius of 7 mm to 11 mm, and the height variable section ratio is 22% (4/18).
- 9A (c) is a case in which the maximum height of the fragment is 6 mm. Also in this case, the fragment is disposed from the point where the radius of the electrode assembly becomes 7 mm from the center of the core. Only then, when a fragment with a height of 3 mm is bent toward the core, it does not cover the core with a radius of 4 mm.
- the height of the segment increases in three steps from 3 mm to 6 mm as the radius increases from 7 mm to 10 mm.
- the height of the fragment is maintained at 6 mm with a radius of 10 mm to 22 mm.
- the variable height section of the segment has a radius of 7 mm to 10 mm, and the height variable section ratio is 17% (3/18).
- the height variable section of the segment starts from a radius of 7 mm.
- the ratio of the height variable section is 17% to 28%. This ratio range is included in the above-mentioned preferred range of 1% to 56%.
- the number of layers of the uncoated region 43a sequentially increases from the outer periphery to the core side, and the number of layers increases as the maximum length of the fragment increases to 6 mm, 7 mm, and 8 mm even though the minimum length of the fragment is the same as 3 mm. It can be seen that the maximum value of is increased to 12, 15 and 18. In addition, the thickness of the bent surface area F increases proportionally according to the number of layers.
- the number of stacks of the uncoated region 43a increases from the outer peripheral surface of the electrode assembly 80 toward the core to 18 sheets in a 7 mm radius section, and the radius point at which the increase in the number of stacks stops.
- the number of layers of the uncoated area 43a is uniformly maintained at the level of 18 sheets.
- the number of layers is at least 16 and the radial width is 8 mm.
- the width of the uniform number of stacked sections is 53% (8/15, rounded to one decimal place, hereinafter the same) compared to the radial length (15 mm) of the winding turns including the segment.
- the number of stacks of the uncoated region 43a increases from the outer peripheral surface of the electrode assembly 80 toward the core to 15 sheets in a 6 mm radius section, and the radius point at which the increase in the number of stacks stops.
- the number of layers of the uncoated area 43a is uniformly maintained at the level of 15 sheets.
- the radial width of the section with a uniform number of stacks is 9 mm, and the section with a uniform number of stacks has at least 13 or more layers.
- the width of the uniform number of layers is 60% (9/15) compared to the radial length (15 mm) of the wound turns including the segment.
- the number of stacks of the uncoated region 43a increases from the outer peripheral surface of the electrode assembly 80 toward the core to 12 sheets in a section with a radius of 5 mm, and the radius at which the increase in the number of stacks stops In a section with a radius of 10 mm from the point to the core, the number of layers of the uncoated area 43a is uniformly maintained at the level of 12 sheets. Therefore, the radial width of the section with a uniform number of layers is 10 mm, and the section with the number of layers with a uniform number of layers has at least 11 layers. The width of the uniform number of stacked sections is 67% (10/15) compared to the radial length (15 mm) of the wound turns including the segment.
- the length of the increasing number of lamination sections in which the number of laminations increases gradually increases to 5 mm, 6 mm and 7 mm, respectively, and the uncoated region ( 43a), it can be seen that the ratio of the section with the number of stacks equal to or greater than 10 is 53% to 67%.
- the thickness of the bent surface area F increases in proportion to the number of layers of the uncoated area 43a.
- the number of layers of the uncoated area 43a may be reduced to 10, and thus the number of layers of the uncoated area 43a is 10 to 18.
- the thickness of the bent surface area F may be 100 ⁇ m to 450 ⁇ m.
- the thickness of the bent surface area F may be 50 ⁇ m to 360 ⁇ m.
- the thickness of the bending surface area F satisfies the conditions in the above numerical range, when the current collector is welded to the bending surface area F using a laser, the bending surface area F sufficiently absorbs the energy of the laser. . As a result, welding beads are formed in a sufficient volume in the bent surface area F, thereby increasing welding strength. In addition, it is possible to prevent damage to the separator or the like located below the bent surface area F while the welding site is perforated by the laser.
- the current collector may be welded to the bent surface area (F). At least a part of the welding area of the current collector may overlap with the uniform number of stacked sections with respect to the radial direction.
- 50% to 100% of the welding area of the current collector in the radial direction of the electrode assembly may overlap the uniform number of layers.
- the overlap ratio of the weld area increases, it is preferable in terms of improving weld strength and increasing the weld bead volume.
- the remaining regions that do not overlap the uniform number of stacked sections may overlap with the increased number of stacked sections.
- the lower inner angle of the fragments included in each group of fragments is expressed in Equation 1 If the condition is satisfied, the side edges of the adjacent segment pieces 61 positioned in the same winding turn may cross each other and overlap each other in the circumferential direction. In this case, the number of stacked uncoated regions 43a in the radial direction of the electrode assembly may be further increased.
- 9B is a cross-sectional view of the bent surface area F exemplarily illustrating a section for increasing the number of layers and a section for uniform number of layers when the segments are overlapped in the circumferential direction.
- the number of overlapping uncoated regions 43a sequentially increases from the outer periphery to the core.
- the height variable section of the segment is from a radius of 7 mm, as in the embodiment of FIG. 9A .
- the height of the segment starts at 3 mm and increases by 1 mm for every 1 mm increase in radius.
- the maximum value of the fragment height increases to 6 mm, 7 mm, 8 mm, 9 mm, and 10 mm
- the number of laminates at the radial positions where the number of laminates uniformity section starts increases to 18, 22, 26, 30, and 34.
- the maximum values of the fragment height are 6 mm, 7 mm, and 8 mm
- the number of laminates is 6 to 8 more than in the example of FIG. 9A . This is because the fragments overlapped in the circumferential direction.
- the number of stacks of the uncoated region 43a increases from the outer peripheral surface of the electrode assembly 80 toward the core in a section with a radius of 9 mm (increasing the number of stacks) to 34 sheets, In a section with a radius of 6 mm toward the core from the radius at which the increase in the number of stacks stops, the number of stacks of the uncoated area 43a is maintained at 34, and then the number of stacks increases to 39 near the core.
- the increase in the number of layers near the core is because overlapping of the fragments in the circumferential direction becomes more severe toward the core.
- a radius section near the core in which the number of stacks is further increased may be defined as a section where the number of stacks is further increased.
- the number of stacks is at least 34 and the radial width is 6 mm.
- the uniform number of layers starts from a radius of 7mm and is 40% (6/15, rounded to one decimal place, the same below) compared to the radial length (15mm) of the winding turns including the segment.
- the number of stacks of the uncoated region 43a increases to 30 in a section with a radius of 8 mm from the outer peripheral surface of the electrode assembly 80 toward the core, and the increase in the number of stacks stops.
- the number of stacks of the uncoated area 43a is maintained at 30 and further increases to 36 sheets near the core.
- the radial width of the section with a uniform number of layers is 7 mm, and the section with the number of layers with a uniform number of layers has at least 30 or more layers.
- the section with a uniform number of stacks starts from a radius of 7 mm and is 47% (7/15) of the radial length (15 mm) of the winding turns including the segment.
- the number of stacks of the uncoated region 43a increases from the outer peripheral surface of the electrode assembly 80 toward the core to 26 sheets in a section with a radius of 7 mm, and the increase in the number of layers increases
- the radial width of the section with a uniform number of layers is 8 mm
- the section with the number of layers with a uniform number of layers has at least 26 layers.
- the section with a uniform number of stacks starts from a radius of 7 mm and is 53% (8/15) of the radial length (15 mm) of the winding turns including the segment.
- the number of overlapping uncoated regions 43a increases from the outer peripheral surface of the electrode assembly 80 toward the core to 22 sheets in a section with a radius of 6 mm, and the increase in the number of layers increases.
- the number of stacked uncoated areas 43a is maintained at 22, and then further increases to 23 near the core. Therefore, the radial width of the section with a uniform number of layers is 9 mm, and the section with the number of layers with a uniform number of layers has at least 22 sheets or more.
- the section with a uniform number of stacks starts from a radius of 7mm and is a section corresponding to 60% (9/15) of the radial length (15mm) of the winding turns including the segment.
- the number of overlapping uncoated regions 43a increases to 18 sheets from the outer peripheral surface of the electrode assembly 80 toward the core side with a radius of 5 mm, and the increase in the number of layers increases
- the radial width of the section with a uniform number of layers is 10 mm
- the section with the number of layers with a uniform number of layers has at least 18 layers.
- the section with a uniform number of stacks starts from a radius of 7mm and corresponds to 67% (10/15) of the radial length (15mm) of the winding turns including the segment.
- the length of the increase in the number of laminates in which the number of laminates is gradually increased is 5 mm, Increases to 6mm, 7mm, 8mm and 9mm.
- the ratio of the uniform number of layers of 10 or more layers is 40% to 67%.
- the thickness of the bent surface area F increases in proportion to the number of layers of the uncoated area 43a.
- the number of layers of the uncoated region 43a is 18 to 39.
- the thickness of the bent surface area F may be 180 ⁇ m to 975 ⁇ m.
- the thickness of the bent surface area F may be 90 ⁇ m to 780 ⁇ m.
- the thickness of the bending surface area F satisfies the conditions in the above numerical range, when the current collector is welded to the bending surface area F using a laser, the bending surface area F sufficiently absorbs the energy of the laser. . As a result, welding beads are formed in a sufficient volume in the bent surface area F, thereby increasing welding strength. In addition, it is possible to prevent damage to the separator or the like located below the bent surface area F while the welding site is perforated by the laser.
- the welding area of the current collector may overlap with the uniform number of stacked sections in the radial direction.
- 50% to 100% of the welding area of the current collector in the radial direction of the electrode current collector 80 may overlap the uniform number of stacked sections.
- the overlap ratio of the weld area increases, it is preferable in terms of weld strength.
- a region that does not overlap with the uniform number of stacks section may overlap with the section where the number of stacks increases.
- the radius R of the electrode assembly in the section where the number of layers of the uncoated region 43a is uniform, the radius r c of the core, and the minimum value of the height of the fragment in the section in which the height of the fragment is variable. It will be apparent to those skilled in the art that it can be increased or decreased by the maximum value, and the height increase width of the segment in the radial direction of the electrode assembly.
- the ratio of the uniform number of layers is inversely proportional to the radius of the core (r c ).
- the ratio of the uniform number of stacked sections increases as the width of the variable height section decreases when the minimum heights of the segments are the same.
- the ratio of the section with a uniform number of layers increases as the width of the variable height section is smaller when the maximum height of the segment is the same.
- the diameter (R) of the electrode assembly is 22 mm
- the radius (r c ) of the core is 2 mm
- the height of the fragment is varied from 9 mm to 12 mm, from 7 mm to 10 mm in the segment height variable section. The percentage can be reduced to the level of 30%.
- the diameter (R) of the electrode assembly is 22 mm
- the radius (r c ) of the core is 2 mm
- the height of the fragment is varied from 5 mm to 6 mm, from 3 mm to 4 mm in the segment height variable section. The percentage can be increased up to the 85% level.
- the radial length of the uniform number of stacked sections may be 30% or more, preferably 30% to 85%, compared to the radial length of the wound turns including the segment.
- the number of layers in the uniform height section of the fragment is 6 mm to 10 mm
- the number of layers is uniform by changing the minimum height of the fragment and the amount of increase in the height of the fragment in the radial direction.
- the number of layers of the uncoated area 43a in the section may be adjusted in the range of 10 to 39.
- the section with a uniform number of layers of the bent surface area F includes a section formed by bending the fragments included in the section with a uniform height.
- the thickness of the bent surface area F depends on the thickness of the material constituting the uncoated area 43a.
- the thickness of the uncoated region of the bent surface area F is 100 ⁇ m (0.1 mm) to 975 ⁇ m (0.975 mm).
- the ratio of the thickness of the uncoated part of the bent surface area (F) to the height of the fragment is 1.0% ( 0.1 mm/10 mm) to 16.3% (0.975 mm/6 mm).
- the lamination thickness of the uncoated region of the bent surface area F is 50 ⁇ m (0.05 mm) to 780 ⁇ m (0.780 mm).
- the ratio of the thickness of the uncoated part of the bent surface area (F) to the height of the fragment is 0.5% ( 0.05 mm/10 mm) to 13.0% (0.780 mm/6 mm).
- Various electrode assembly structures according to an embodiment (modified example) of the present invention may be applied to a jelly roll type cylindrical battery or any battery known in the art.
- the cylindrical battery may be, for example, a cylindrical battery in which the ratio of the form factor (defined as the diameter of the cylindrical battery divided by the height, i.e. the ratio of the height H to the diameter ⁇ ) is greater than approximately 0.4. .
- the form factor means a value indicating the diameter and height of the cylindrical battery.
- the form factor of the cylindrical battery according to an embodiment of the present invention may be, for example, 46110, 4875, 48110, 4880, 4680, or the like.
- the first two numbers represent the diameter of the battery, and the remaining numbers represent the height of the battery.
- the battery according to an embodiment of the present invention may be a cylindrical battery having a substantially cylindrical shape, a diameter of about 46 mm, a height of about 110 mm, and a form factor ratio of 0.418.
- the battery according to another embodiment may be a cylindrical battery having a substantially cylindrical shape, a diameter of about 48 mm, a height of about 75 mm, and a form factor ratio of 0.640.
- a battery according to another embodiment may be a cylindrical battery having a substantially cylindrical shape, a diameter of about 48 mm, a height of about 110 mm, and a form factor ratio of 0.436.
- the battery according to another embodiment may be a cylindrical battery having a substantially cylindrical shape, a diameter of about 48 mm, a height of about 80 mm, and a form factor ratio of 0.600.
- the battery according to another embodiment may be a cylindrical battery having a substantially cylindrical shape, a diameter of about 46 mm, a height of about 80 mm, and a form factor ratio of 0.575.
- batteries having a form factor ratio of about 0.4 or less have been used. That is, conventionally, for example, an 1865 battery, a 2170 battery, or the like has been used. For an 1865 battery, its diameter is approximately 18 mm, its height is approximately 65 mm, and the form factor ratio is 0.277. For a 21700 battery, its diameter is approximately 21 mm, its height is approximately 70 mm, and the form factor ratio is 0.300.
- FIG. 10 is a cross-sectional view taken along the Y-axis direction of the cylindrical battery 190 according to an embodiment of the present invention.
- a cylindrical battery 190 includes an electrode assembly 110 including a first electrode, a separator, and a second electrode, and a battery housing 142 accommodating the electrode assembly 110 . ) and a sealing body 143 for sealing the open end of the battery housing 142 .
- the battery housing 142 is a cylindrical container in which an opening is formed at the upper side.
- the battery housing 142 is made of a metal material having conductivity, such as aluminum or steel.
- the battery housing 142 accommodates the electrode assembly 110 in the inner space through the upper opening and also accommodates the electrolyte.
- the electrolyte may be a salt having a structure such as A + B -- .
- a + includes an ion composed of an alkali metal cation such as Li + , Na + , K + or a combination thereof.
- B - is F - , Cl - , Br - , I - , NO 3 - , N(CN) 2 - , BF 4 - , ClO 4 - , AlO 4 - , AlCl 4 - , PF 6 - , SbF 6 - , AsF 6 - , BF 2 C 2 O 4 - , BC 4 O 8 - , (CF 3 ) 2 PF 4 - , (CF 3 ) 3 PF 3 - , (CF 3 ) 4 PF 2 - , (CF 3 ) 5 PF - , (CF 3 ) 6 P - , CF 3 SO 3 - , C 4 F 9 SO 3 - , CF 3
- the electrolyte can also be used by dissolving it in an organic solvent.
- organic solvent 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 (N-methyl- 2-pyrrolidone, NMP), ethyl methyl carbonate (EMC), gamma butyrolactone ( ⁇ -butyrolactone), or a mixture thereof may be used.
- PC propylene carbonate
- EC ethylene carbonate
- DEC diethyl carbonate
- DMC dimethyl carbonate
- DPC dipropyl carbonate
- dimethyl sulfoxide acetonitrile, dimethoxyethane, diethoxyethane, tetrahydrofur
- the electrode assembly 110 may have a jelly roll shape or any shape known in the art. As shown in FIG. 2 , the electrode assembly 110 is wound around a winding center (C) of a laminate formed by sequentially stacking a lower separator, a first electrode, an upper separator, and a second electrode at least once. It can be manufactured by
- the first electrode and the second electrode have different polarities. That is, if one has positive polarity, the other has negative polarity.
- At least one of the first electrode and the second electrode may have an electrode structure according to the above-described embodiments (modified examples).
- the other one of the first electrode and the second electrode may have a conventional electrode structure or an electrode structure according to embodiments (modified examples).
- An uncoated area 146a of the first electrode and an uncoated area 146b of the second electrode protrude from the upper and lower portions of the electrode assembly 110 , respectively.
- the sealing body 143 provides airtightness between the cap 143a, the cap 143a, and the battery housing 142 and is electrically and mechanically coupled to the first gasket 143b and the cap 143a having insulation. It may include a connection plate (143c).
- the cap 143a is a component made of a conductive metal material and covers the upper opening of the battery housing 142 .
- the cap 143a is electrically connected to the uncoated portion 146a of the first electrode, and is electrically insulated from the battery housing 142 through a first gasket 143b. Accordingly, the cap 143a may function as the first electrode terminal of the cylindrical battery 140 .
- the cap 143a is seated on the beading portion 147 formed in the battery housing 142 , and is fixed by the crimping portion 148 .
- a first gasket 143b may be interposed between the cap 143a and the crimping part 148 to secure airtightness of the battery housing 142 and to electrically insulate the battery housing 142 and the cap 143a.
- the cap 143a may include a protrusion 143d protruding upward from the center thereof.
- the battery housing 142 is electrically connected to the uncoated region 146b of the second electrode. Accordingly, the battery housing 142 has the same polarity as the second electrode. If the second electrode has a negative polarity, the battery housing 142 also has a negative polarity.
- the battery housing 142 has a beading part 147 and a crimping part 148 at the top.
- the beading portion 147 is formed by press-fitting the outer peripheral surface of the battery housing 142 .
- the beading part 147 prevents the electrode assembly 110 accommodated in the battery housing 142 from escaping through the upper opening of the battery housing 142, and may function as a support part on which the sealing body 143 is seated. .
- the crimping portion 148 is formed on the beading portion 147 .
- the crimping part 148 has an extended and bent shape so as to surround a portion of the outer peripheral surface of the cap 143a disposed on the beading part 147 and the upper surface of the cap 143a.
- the cylindrical battery 140 may further include a first current collector 144 and/or a second current collector 145 and/or an insulator 146 .
- the first current collector 144 has a plate shape and is coupled to the upper portion of the electrode assembly 110 .
- the first current collector 144 is made of a conductive metal material such as aluminum, copper, nickel, or the like, and is electrically connected to the bent surface area F 1 formed by bending the uncoated portion 146a of the first electrode.
- a lead 149 may be connected to the first current collector 144 .
- the lead 149 may extend upwardly of the electrode assembly 110 and may be coupled to the connection plate 143c or may be directly coupled to the lower surface of the cap 143a.
- the lead 149 and other components may be coupled through welding.
- the first current collector 144 may be integrally formed with the lead 149 .
- the lead 149 may have an elongated plate shape extending outward from the center of the first current collector 144 .
- the coupling between the bent surface area F 1 of the uncoated region 146a and the first current collector 144 may be performed, for example, by laser welding.
- Laser welding may be performed by partially melting the current collector base material.
- Laser welding can be replaced by resistance welding, ultrasonic welding, or the like.
- the uncoated region 146a is divided into a plurality of fragments, and the bent surface area F 1 is formed while the plurality of fragments are bent toward the core C.
- the radial length of the uncoated region 146a in the number of stacks of 10 or more is 30% or more, more preferably 30% to 85%, compared to the radial length of the wound turns including the segment piece. have.
- the welding area between the bent surface area F 1 of the uncoated area 146a and the first current collector 144 may overlap the bent surface area F 1 with the uniform number of stacked sections W 1 of at least 50% or more. And, the higher the overlap ratio, the more preferable.
- the welding strength is preferably 2 kgf/cm 2 or more, more preferably 4 kgf/cm 2 may be more than
- the upper limit of the welding strength may be determined by the specifications of the laser welding equipment.
- the weld strength may be 8 kgf/cm 2 or less, or 6 kgf/cm 2 or less.
- the laser power for realization of welding strength depends on the laser equipment. As an example, the laser power may be 250W to 320W. As another example, the laser power may be appropriately adjusted in the range of 40% to 100% of the maximum output specification of the laser welding equipment.
- the welding strength satisfies the above numerical range, even if severe vibration is applied to the electrode assembly 110 along the winding axial direction and/or the radial direction, the physical properties of the welding interface are not deteriorated, and the volume of the welding beads is sufficient to ensure the welding interface. resistance can also be reduced.
- a second current collector 145 having a plate shape may be coupled to a lower surface of the electrode assembly 110 .
- One surface of the second current collector 145 is welded to the bent surface area F 2 formed while the uncoated region 146b of the second electrode is bent, and the opposite surface is the inner bottom surface of the battery housing 142 . may be joined by welding.
- the uncoated region 146b is divided into a plurality of fragments, and the bent surface area F 2 is formed while the plurality of fragments are bent toward the core C.
- the radial length of the uncoated region 146b is 10 or more, 30% or more, more preferably 30% to 85%, compared to the radial length of the wound turns including the segment piece. have.
- a coupling structure between the second current collector 145 and the uncoated area 146b of the second electrode may be substantially the same as a coupling structure between the first current collector 144 and the uncoated area 146a of the first electrode.
- the welding area between the bent surface area F 2 of the uncoated area 146b and the second current collector 145 may overlap the uniform number of stacks W 2 by at least 50% or more, and the higher the overlap ratio, the more desirable.
- the welding strength is preferably 2 kgf/cm 2 or more, more preferably 4 kgf/cm 2 may be more than
- the upper limit of the welding strength may be determined by the specifications of the laser welding equipment.
- the weld strength may be 8 kgf/cm 2 or less, or 6 kgf/cm 2 or less.
- the laser power for realization of welding strength depends on the laser equipment. As an example, the laser power may be 250W to 320W. As another example, the laser power may be appropriately adjusted in the range of 40% to 100% of the maximum output specification of the laser welding equipment.
- the welding strength satisfies the above numerical range, even if severe vibration is applied to the electrode assembly 110 along the winding axial direction and/or the radial direction, the physical properties of the welding interface are not deteriorated, and the volume of the welding beads is sufficient to ensure the welding interface. resistance can also be reduced.
- the insulator 146 may cover the first current collector 144 .
- the insulator 146 may cover the first current collector 144 from the upper surface of the first current collector 144 , thereby preventing direct contact between the first current collector 144 and the inner circumferential surface of the battery housing 142 . .
- the insulator 146 includes a lead hole 151 so that a lead 149 extending upwardly from the first current collector 144 can be withdrawn.
- the lead 149 is drawn upward through the lead hole 151 and is coupled to the lower surface of the connection plate 143c or the lower surface of the cap 143a.
- the peripheral region of the insulator 146 may be interposed between the first current collector 144 and the beading portion 147 to fix the electrode assembly 110 and the combination of the first current collector 144 . Accordingly, in the assembly of the electrode assembly 110 and the first current collector 144 , the movement of the battery 140 in the height direction is restricted, so that the assembly stability of the battery 140 may be improved.
- the insulator 146 may be made of an insulating polymer resin.
- the insulator 146 may be made of polyethylene, polypropylene, polyimide, or polybutylene terephthalate.
- the battery housing 142 may further include a venting part 152 formed on a lower surface thereof.
- the venting part 152 corresponds to a region having a thinner thickness compared to a peripheral region of the lower surface of the battery housing 142 .
- the venting part 152 is structurally weak compared to the surrounding area. Accordingly, when an abnormality occurs in the cylindrical battery 190 and the internal pressure increases to a certain level or more, the venting part 152 may rupture and the gas generated inside the battery housing 142 may be discharged to the outside.
- the venting part 152 may be formed continuously or discontinuously while drawing a circle on the lower surface of the battery housing 142 .
- the venting part 152 may be formed in a straight pattern or other pattern.
- FIG 11 is a cross-sectional view taken along the Y-axis of the cylindrical battery 200 according to another embodiment of the present invention.
- the cylindrical battery 200 has substantially the same structure as the cylindrical battery 190 illustrated in FIG. 10 , and is different in that the structure except for the electrode assembly is changed.
- the cylindrical battery 200 includes a battery housing 171 through which the terminal 172 is installed.
- the terminal 172 is installed on the closed surface (upper surface in the drawing) of the battery housing 171 .
- the terminal 172 is riveted to the through hole of the battery housing 171 with the second insulating gasket 173 interposed therebetween.
- the terminal 172 is exposed to the outside in a direction opposite to the direction of gravity.
- the terminal 172 includes a terminal exposed portion 172a and a terminal insertion portion 172b.
- the terminal exposed portion 172a is exposed to the outside of the closed surface of the battery housing 171 .
- the terminal exposed portion 172a may be located approximately at the center of the closed surface of the battery housing 171 .
- the maximum diameter of the terminal exposed portion 172a may be larger than the maximum diameter of the through hole formed in the battery housing 171 .
- the terminal insertion portion 172b may pass through an approximately central portion of the closed surface of the battery housing 171 to be electrically connected to the uncoated portion 146a of the first electrode.
- the terminal insertion part 172b may be riveted to the inner surface of the battery housing 171 .
- the lower edge of the terminal insertion part 172b may be curved toward the inner surface of the battery housing 171 .
- the maximum diameter of the end of the terminal insertion part 172b may be greater than the maximum diameter of the through hole of the battery housing 171 .
- the bottom surface of the terminal insertion part 172b is substantially flat and may be welded to the central part of the first current collector 144 connected to the uncoated part 146a of the first electrode.
- An insulator 174 made of an insulating material may be interposed between the first current collector 144 and the inner surface of the battery housing 171 .
- the insulator 174 covers an upper portion of the first current collector 144 and an upper edge portion of the electrode assembly 110 . Accordingly, it is possible to prevent the uncoated region 146a exposed on the outer periphery of the electrode assembly 110 from contacting the inner surface of the battery housing 171 having a different polarity to cause a short circuit.
- the insulator 174 is in contact with the inner surface of the closing part of the battery housing 171 and is in contact with the upper surface of the first current collector 144 . To this end, the insulator 174 has a thickness corresponding to the separation distance between the inner surface of the closing part of the battery housing 171 and the upper surface of the first current collector 144 or a thickness slightly larger than the separation distance.
- the first current collector 144 may be laser welded to the bent surface area F 1 of the uncoated region 146a.
- the welding is performed in a region including a section where the number of layers of the uncoated region 146a is equal to or greater than 10 in the bent surface region F 1 of the uncoated region 146a.
- the radial length of the uniform number of stacked sections of the uncoated region 146a may be 30% or more, more preferably 30% to 85%, compared to the radial length of the wound turns including the segmental pieces.
- the welding area between the bent surface area F 1 of the uncoated area 146a and the first current collector 144 may overlap the uniform number of stacks W 1 by at least 50% or more, and the higher the overlap ratio, the more desirable.
- the welding strength is preferably 2 kgf/cm 2 or more, more preferably 4 kgf/cm 2 may be more than
- the upper limit of the welding strength may be determined by the specifications of the laser welding equipment.
- the weld strength may be 8 kgf/cm 2 or less, or 6 kgf/cm 2 or less.
- the laser power for realization of welding strength depends on the laser equipment. As an example, the laser power may be 250W to 320W. As another example, the laser power may be appropriately adjusted in the range of 40% to 100% of the maximum output specification of the laser welding equipment.
- the welding strength satisfies the above numerical range, even if severe vibration is applied to the electrode assembly 110 along the winding axial direction and/or the radial direction, the physical properties of the welding interface are not deteriorated, and the volume of the welding beads is sufficient to ensure the welding interface. resistance can also be reduced.
- the second gasket 173 is interposed between the battery housing 171 and the terminal 172 to prevent the battery housing 171 and the terminal 172 having opposite polarities from electrically contacting each other. Accordingly, the upper surface of the battery housing 171 having a substantially flat shape may function as the second electrode terminal of the cylindrical battery 200 .
- the second gasket 173 includes a gasket exposed portion 173a and a gasket insertion portion 173b.
- the gasket exposed portion 173a is interposed between the terminal exposed portion 172a of the terminal 172 and the battery housing 171 .
- the gasket insertion part 173b is interposed between the terminal insertion part 172b of the terminal 172 and the battery housing 171 .
- the gasket insertion part 173b may be deformed together during riveting of the terminal insertion part 172b to be in close contact with the inner surface of the battery housing 171 .
- the second gasket 173 may be made of, for example, an insulating polymer resin.
- the gasket exposed portion 173a of the second gasket 173 may extend to cover the outer peripheral surface of the terminal exposed portion 172a of the terminal 172 .
- a short circuit is prevented from occurring in the process of coupling an electrical connection component such as a bus bar to the upper surface and/or the terminal 172 of the battery housing 171 . can do.
- the gasket exposed portion 173a may have an extended shape to cover a portion of the upper surface as well as the outer peripheral surface of the terminal exposed portion 172a.
- the second gasket 173 When the second gasket 173 is made of a polymer resin, the second gasket 173 may be coupled to the battery housing 171 and the terminal 172 by thermal fusion. In this case, airtightness at the bonding interface between the second gasket 173 and the terminal 172 and at the bonding interface between the second gasket 173 and the battery housing 171 may be enhanced.
- the gasket exposed portion 173a of the second gasket 173 has a shape extending to the upper surface of the terminal exposed portion 172a
- the terminal 172 is formed between the second gasket 173 and the second gasket 173 by insert injection. may be integrally coupled.
- the remaining area 175 of the upper surface of the battery housing 171 excluding the area occupied by the terminal 172 and the second gasket 173 corresponds to the second electrode terminal having a polarity opposite to that of the terminal 172 .
- the second current collector 176 is coupled to the lower portion of the electrode assembly 110 .
- the second current collector 176 is made of a conductive metal material such as aluminum, steel, copper, or nickel, and is electrically connected to the uncoated portion 146b of the second electrode.
- the second current collector 176 is electrically connected to the battery housing 171 .
- at least a portion of the edge of the second current collector 176 may be fixedly interposed between the inner surface of the battery housing 171 and the first gasket 178b.
- At least a portion of the edge portion of the second current collector 176 is fixed to the beading unit 17 by welding while supported on the lower end surface of the beading unit 180 formed at the lower end of the battery housing 171 .
- at least a portion of an edge portion of the second current collector 176 may be directly welded to the inner wall surface of the battery housing 171 .
- the second current collector 176 and the bent surface area F 2 of the uncoated region 146b may be joined by welding, for example, laser welding. At this time, the welding is performed in a region including a section where the number of layers of the uncoated region 146b is equal to or greater than 10 in the bent surface region F 2 of the uncoated region 146b.
- the radial length of the uncoated region 146b may be 30% or more, more preferably 30% to 85%, of the radial length of the wound turns including the segmental pieces.
- the welding area between the bent surface area F 2 of the uncoated region 146b and the second current collector 176 may overlap the uniform number of stacked sections W 2 by at least 50% or more, and the higher the overlap ratio, the more desirable.
- the welding strength is preferably 2 kgf/cm 2 or more, more preferably 4 kgf/cm 2 may be more than
- the welding strength satisfies the above numerical range, even if severe vibration is applied to the electrode assembly 110 along the winding axial direction and/or the radial direction, the physical properties of the welding interface are not deteriorated, and the volume of the welding beads is sufficient to ensure the welding interface. resistance can also be reduced.
- the sealing body 178 sealing the lower open end of the battery housing 171 includes a cap 178a and a first gasket 178b.
- the first gasket 178b electrically separates the cap 178a and the battery housing 171 from each other.
- the crimping part 181 fixes the edge of the cap 178a and the first gasket 178b together.
- the cap 178a is provided with a vent portion 179 .
- the configuration of the vent part 179 is substantially the same as that of the above-described embodiment (modified example).
- the cap 178a is made of a conductive metal material.
- the first gasket 178b is interposed between the cap 178a and the battery housing 171 , the cap 178a does not have an electrical polarity.
- the sealing body 178 seals the open end of the lower part of the battery housing 171 and functions to discharge gas when the internal pressure of the battery 200 increases by more than a threshold value.
- the terminal 172 electrically connected to the uncoated portion 146a of the first electrode is used as the first electrode terminal.
- a portion 175 excluding the terminal 172 has the same polarity as the first electrode terminal.
- This other second electrode terminal is used.
- the cylindrical battery 200 may lower the resistance at the joint portion of the electrical connection component to a desirable level.
- the core C of the electrode assembly 110 may be opened upward without being blocked.
- the height of the uncoated region of the first and second electrodes is designed to be low, and the segment 61 is adjacent to the uncoated region A on the core side.
- the height of the segment 61 closest to the core-side uncoated area A even if the uncoated area near the core of the electrode assembly 110 is bent, the core C of the electrode assembly 110 ) is not obstructed.
- the core (C) is not blocked, there is no difficulty in the electrolyte injection process, and the electrolyte injection efficiency is improved. Also, by inserting a welding jig into the core C, a welding process between the current collector 145 and the bottom of the battery housing 142 or a welding process between the current collector 144 and the terminal 172 can be easily performed.
- the fragments are bent at welding strength. It overlaps in several layers enough to secure the
- the welding regions of the first current collector 144 and the second current collector 176 are spaced apart from each other by 4 mm or more in the radial direction with respect to the center of the core C of the electrode assembly 110, and the electrode assembly (110) may be spaced apart by a distance of 50% or less of the radius.
- the separation distance of 4 mm is determined in consideration of the minimum radius (2 mm) of the core (C) and the minimum height (2 mm) of the fragment 61 (2 mm).
- a distance of 50% or less of the radius of the electrode assembly 110 is set in consideration of securing a sufficient welding area.
- the welding area of the first current collector 144 and the welding area of the second collector plate 176 are spaced apart from a position substantially the same distance from the center of the core C of the electrode assembly 110 . It may extend in a radial direction of the electrode assembly. In this case, it is preferable that an extended length of the welding region of the first current collector is longer than an extended length of the welding region of the second current collector.
- first current collector 144 and the second current collector 176 may have a new structure as shown in FIGS. 12 and 13 .
- FIG. 12 is a top plan view showing the structure of the first current collector 144 according to an embodiment of the present invention.
- the first current collector 144 may include an edge portion 144a, a first uncoated portion coupling portion 144b, and a terminal coupling portion 144c.
- the edge portion 144a is disposed on the electrode assembly 110 .
- the edge portion 144a may have a substantially rim shape in which an empty space S is formed. In the drawings of the present invention, only the case where the rim portion 144a has a substantially circular rim shape is illustrated, but the present invention is not limited thereto.
- the rim portion 144a may have a substantially rectangular rim shape, a hexagonal rim shape, an octagonal rim shape, or other rim shape, unlike shown.
- the terminal coupling portion 144c has a diameter equal to or greater than the diameter of the flat portion formed on the bottom surface of the terminal 172 in order to secure a welding area for coupling with the flat portion formed on the bottom surface of the terminal 172 .
- the first uncoated portion coupling portion 144b extends inward from the edge portion 144a and is coupled to the uncoated portion 146a.
- the terminal coupling part 144c is spaced apart from the first uncoated part coupling part 144b and is located inside the edge part 144a.
- the terminal coupling portion 144c may be coupled to the terminal 172 by welding.
- the terminal coupling portion 144c may be located, for example, approximately at the center of the inner space surrounded by the edge portion 144a.
- the terminal coupling part 144c may be provided at a position corresponding to the hole formed in the core C of the electrode assembly 110 .
- the terminal coupling part 144c covers the hole formed in the core C of the electrode assembly 110 so that the hole formed in the core C of the electrode assembly 110 is not exposed to the outside of the terminal coupling part 144c.
- the terminal coupling portion 144c may have a larger diameter or width than the hole formed in the core C of the electrode assembly 110 .
- the first uncoated portion coupling portion 144b and the terminal coupling portion 144c may not be directly connected but may be disposed to be spaced apart from each other and may be indirectly connected by the edge portion 144a.
- the first current collector 144 has a structure in which the first uncoated portion coupling portion 144b and the terminal coupling portion 144c are not directly connected to each other, but connected through the edge portion 144a, thereby forming a cylindrical battery.
- the number of the first uncoated portion coupling portions 144b is four is illustrated, but the present invention is not limited thereto.
- the number of the first uncoated portion coupling portions 144b may be variously determined in consideration of manufacturing difficulty according to the complexity of the shape, electrical resistance, and the space inside the rim portion 144a in consideration of electrolyte impregnation.
- the first current collector 144 may further include a bridge portion 144d extending inward from the edge portion 144a and connected to the terminal coupling portion 144c. At least a portion of the bridge portion 144d may have a smaller cross-sectional area compared to the first uncoated portion coupling portion 144b and the edge portion 144a. For example, at least a portion of the bridge portion 144d may be formed to have a smaller width and/or thickness than that of the first uncoated portion coupling portion 144b. In this case, the electrical resistance increases in the bridge portion 144d, and thus, when a current flows through the bridge portion 144d, a relatively large resistance is melted due to overcurrent heating in a part of the bridge portion 144d. , which irreversibly cuts off the overcurrent.
- the cross-sectional area of the bridge part 144d may be adjusted to an appropriate level in consideration of the overcurrent blocking function.
- the bridge portion 144d may include a tapered portion 144e whose width is gradually narrowed in a direction from the inner surface of the edge portion 144a toward the terminal coupling portion 144c.
- the rigidity of the component may be improved at the connection portion between the bridge portion 144d and the edge portion 144a.
- the tapered portion 144e is provided, in the manufacturing process of the cylindrical battery 200, for example, the first current collector 144 and/or the transfer equipment and/or the operator grip the tapered portion 144e. The combination of the first current collector 144 and the electrode assembly 110 can be easily and safely transported.
- a plurality of first uncoated portion coupling portions 144b may be provided.
- the plurality of first uncoated portion coupling portions 144b may be disposed at the same distance from each other along the extending direction of the edge portion 144a.
- An extension length of each of the plurality of first uncoated portion coupling portions 144b may be approximately equal to each other.
- the first uncoated region coupling portion 144b may be coupled to the bent surface area F 1 of the uncoated region 146a by welding.
- the welding pattern 144f formed by welding between the first uncoated region coupling portion 144b and the bent surface region W 1 may have a structure to extend along the radial direction of the electrode assembly 110 .
- the welding pattern 144f may be an arrangement of a line pattern or a dot pattern.
- the terminal coupling part 144c may be disposed to be surrounded by a plurality of the first uncoated part coupling parts 144b.
- the terminal coupling portion 144c may be coupled to the terminal 172 by welding.
- the bridge part 144d may be positioned between a pair of first uncoated part coupling parts 144b adjacent to each other. In this case, the distance from the bridge part 144d to any one of the pair of first uncoated part coupling parts 144b in the extending direction of the edge part 144a is from the bridge part 144d to the edge part 144a. ) may be approximately the same as the distance to the other one of the pair of first uncoated portion coupling portions 144b along the extension direction.
- Each of the plurality of first uncoated portion coupling portions 144b may have substantially the same cross-sectional area.
- Each of the plurality of first uncoated portion coupling portions 144b may have substantially the same width and thickness.
- a plurality of bridge parts 144d may be provided. Each of the plurality of bridge portions 144d may be disposed between a pair of first uncoated portion coupling portions 144b adjacent to each other. The plurality of bridge parts 144d may be disposed at substantially equal intervals from each other along the extending direction of the edge part 144a. The distance from each of the plurality of bridge parts 144d to any one of the pair of first uncoated part coupling parts 144b adjacent to each other along the extending direction of the edge part 144a is the other first uncoated part coupling part. may be approximately equal to the distance to (144b).
- a distance between the first uncoated area coupling parts 144b and/or bridge parts 144d is provided.
- a current from the first uncoated part coupling part 144b to the bridge part 144d or the bridge part ( The flow of current from 144d) toward the first uncoated region coupling portion 144b may be smoothly and uniformly formed.
- the coupling between the first current collector 144 and the bent surface area F 1 of the uncoated region 146a may be performed by welding.
- welding laser welding, ultrasonic welding, spot welding, etc. may be applied, for example.
- the welding area may overlap the uniform number of stacked sections W 1 of the bent surface area F 1 by at least 50% or more.
- the bridge portion 144d may include a notch portion N that is formed to partially reduce a cross-sectional area of the bridge portion 144d. Adjustment of the cross-sectional area of the notched portion N may be realized, for example, by partially reducing the width and/or thickness of the bridge portion 144d.
- the notched portion N is preferably provided in a region corresponding to the uniform number of stacked sections of the electrode assembly 110 in order to prevent foreign substances generated during breakage from flowing into the electrode assembly 110 . This is because, in this region, the number of stacked fragments of the uncoated region 146a is maintained to the maximum, and thus the overlapping fragments can function as a mask.
- the notched portion N may be provided in a region in which the number of stacks of the uncoated areas 146a is maximum among the uniform number of stacked sections.
- FIG. 13 is a top plan view showing the structure of the second current collector 176 according to an embodiment of the present invention.
- the second current collector 176 is disposed under the electrode assembly 110 .
- the second current collector 176 may be configured to electrically connect the uncoated region 146b of the electrode assembly 110 and the battery housing 171 .
- the second current collector 176 is made of a conductive metal material and is connected to the uncoated region 146b.
- the second current collector 176 is electrically connected to the battery housing 171 .
- the second current collector 176 may be interposed between the inner surface of the battery housing 171 and the first gasket 178b to be fixed.
- the second current collector 176 may be interposed between the lower surface of the beading portion 180 of the battery housing 171 and the first gasket 178b.
- the present invention is not limited thereto.
- the second current collector 176 may be welded to the inner wall surface of the battery housing 171 in a region where the beading portion 180 is not formed.
- the second current collector 176 includes a support portion 176a disposed under the electrode assembly 110 , and extends from the support portion 176a in a radial direction of the electrode assembly 110 to form the uncoated portion 146b.
- the second uncoated part coupling part 176b coupled to the bent surface area F 2 and the support part 176a extend approximately along the radial direction of the electrode assembly 110 and are coupled on the inner surface of the battery housing 171 . It may include a housing coupling portion (176c) that is.
- the second uncoated part coupling part 176b and the housing coupling part 176c are indirectly connected through the support part 176a and are not directly connected to each other.
- the coupling portion between the second current collector 176 and the electrode assembly 110 and the second current collector 176 and the battery housing 171 are coupled The possibility of damage to the area can be minimized.
- the second current collector 176 of the present invention is not limited to the case in which the second uncoated portion coupling portion 176b and the housing coupling portion 176c are only indirectly connected as described above.
- the second current collector 176 has a structure and/or a non-coated portion ( 146b) and the housing coupling portion 176c may have a structure in which they are directly connected to each other.
- the support part 176a and the second uncoated part coupling part 176b are disposed under the electrode assembly 110 .
- the second uncoated region coupling portion 176b is coupled to the bent surface area F 2 of the uncoated region 146b.
- the support portion 176a may also be coupled to the uncoated portion 146b.
- the second uncoated region coupling portion 176b and the uncoated region 146b may be coupled by welding.
- the support part 176a and the second uncoated part coupling part 176b are positioned above the beading part 180 when the beading part 180 is formed in the battery housing 171 .
- the support part 176a includes a current collector plate hole 176d formed at a position corresponding to the hole formed in the core C of the electrode assembly 110 .
- the core C and the collector plate hole 176d of the electrode assembly 110 which are in communication with each other, are inserted into the welding rod for welding between the terminal 172 and the terminal coupling portion 144c of the first current collector 144, or It can function as a path for irradiation of a laser beam.
- the collector plate hole 176d may have a diameter that is approximately the same as or greater than that of the hole formed in the core C of the electrode assembly 110 .
- the plurality of second uncoated area coupling parts 176b are approximately radial from the support part 176a of the second current collector 176 to the battery housing 171 . It may have a shape extending toward the side wall of the. Each of the plurality of second uncoated portion coupling portions 176b may be positioned to be spaced apart from each other along the circumference of the support portion 176a.
- a plurality of the housing coupling portions 176c may be provided.
- the plurality of housing coupling portions 176c may have a shape extending from the center of the second current collector 176 approximately radially toward the sidewall of the battery housing 171 .
- the electrical connection between the second current collector 176 and the battery housing 171 may be made at a plurality of points.
- the coupling for electrical connection is made at a plurality of points, thereby maximizing the coupling area to minimize electrical resistance.
- Each of the plurality of housing coupling parts 176c may be positioned to be spaced apart from each other along the circumference of the support part 176a. At least one housing coupling part 176c may be positioned between the adjacent second uncoated part coupling parts 176b.
- the plurality of housing coupling parts 176c may be coupled to, for example, the beading part 180 of the inner surface of the battery housing 171 .
- the housing coupling parts 176c may be coupled to the lower surface of the beading part 180 through welding. Welding, for example, laser welding, ultrasonic welding or spot welding may be applied. By welding the housing coupling part 176c on the beading part 180 as described above, the resistance level of the cylindrical battery 200 may be limited to about 4 milliohms or less.
- the lower surface of the beading part 180 extends in a direction substantially parallel to the upper surface of the battery housing 171 , that is, in a direction substantially perpendicular to the sidewall of the battery housing 171 , and the housing coupling part 176c is also By having a shape extending in the same direction, that is, in a radial direction and a circumferential direction, the housing coupling part 176c can be stably in contact with the beading part 180 .
- welding between the two parts can be made smoothly, thereby improving the coupling force between the two parts and increasing the resistance at the coupling part. minimization effect can be obtained.
- the housing coupling portion 176c may include a contact portion 176e coupled to the inner surface of the battery housing 171 and a connection portion 176f connecting the support portion 176a and the contact portion 176e.
- the contact portion 176e is coupled to the inner surface of the battery housing 171 .
- the contact part 176e may be coupled to the beading part 180 as described above. More specifically, the contact portion 176e may be electrically coupled to a flat portion formed on the lower surface of the beading portion 180 formed in the battery housing 171 , and the lower surface of the beading portion 180 and the first gasket ( 178b) may be interposed. In this case, for stable contact and coupling, the contact portion 176e may have a shape extending from the beading portion 180 to a predetermined length along the circumferential direction of the battery housing 171 .
- the maximum distance from the center of the second current collector 176 to the end of the second uncoated portion coupling portion 176b in the radial direction of the electrode assembly 110 is the battery in the region where the beading portion 180 is formed.
- the inner diameter of the housing 171, that is, the minimum inner diameter of the battery housing 171 is preferably formed equal to or smaller than this. In this case, during the sizing process of compressing the battery housing 171 along the height direction, interference between the second current collectors 176 occurs due to the beading unit 180 , and accordingly, the electrode is formed by the second current collector 176 . This is to prevent the assembly 110 from being pressed.
- the second uncoated part coupling part 176b includes a hole 176g.
- the hole 176g may be used as a passage through which the electrolyte may move.
- the welding pattern 176h formed by welding between the second uncoated region coupling portion 176b and the bent surface area W 2 may have a structure to extend along the radial direction of the electrode assembly 110 .
- the welding pattern 176h may be an arrangement of a line pattern or a dot pattern.
- Cylindrical battery 200 according to an embodiment of the present invention has the advantage of being able to perform electrical connection at the top.
- FIG. 14 is a top plan view illustrating a state in which a plurality of cylindrical batteries 200 are electrically connected
- FIG. 15 is a partially enlarged view of FIG. 14 .
- a plurality of cylindrical batteries 200 may be connected in series and in parallel at the top of the cylindrical battery 200 using a bus bar 210 .
- the number of cylindrical batteries 200 may be increased or decreased in consideration of the capacity of the battery pack.
- the terminal 172 may have a positive polarity and the flat surface 171a around the terminal 172 of the battery housing 171 may have a negative polarity.
- the reverse is also possible.
- the plurality of cylindrical batteries 200 may be arranged in a plurality of columns and rows. Columns are up and down in the drawing, and rows are left and right in the drawing.
- the cylindrical batteries 200 may be arranged in a closest packing structure. The tightest packing structure is formed when an equilateral triangle is formed when the centers of the terminals 172 exposed to the outside of the battery housing 171 are connected to each other.
- the bus bar 210 connects the cylindrical batteries 200 arranged in the same row in parallel to each other, and the cylindrical batteries 200 arranged in two adjacent rows are connected in series with each other.
- the bus bar 210 may include a body portion 211 , a plurality of first bus bar terminals 212 , and a plurality of second bus bar terminals 213 for serial and parallel connection.
- the body portion 211 may extend along rows of cylindrical batteries 200 between adjacent terminals 172 .
- the body portion 211 may extend along a row of cylindrical batteries 200 and may be regularly bent like a zigzag shape.
- the plurality of first bus bar terminals 212 may extend from one side of the body 211 and may be electrically coupled to the terminals 172 of the cylindrical battery 200 positioned in the extending direction. Electrical coupling between the first bus bar terminal 212 and the terminal 172 may be performed by laser welding, ultrasonic welding, or the like.
- the plurality of second bus bar terminals 213 may extend from the other side of the body portion 211 and may be electrically coupled to the flat surface 171a around the terminals 172 located in the extension direction. Electrical coupling between the second bus bar terminal 213 and the flat surface 171a may be performed by laser welding, ultrasonic welding, or the like.
- the body portion 211, the plurality of first bus bar terminals 212 and the plurality of second bus bar terminals 213 may be formed of one conductive metal plate.
- the metal plate may be, for example, an aluminum plate or a copper plate, but the present invention is not limited thereto.
- the body portion 211 , the plurality of first bus bar terminals 212 , and the second bus bar terminals 213 may be manufactured as separate pieces and then coupled to each other through welding or the like.
- the above-described cylindrical battery 200 of the present invention, the welding area expansion through the bent surface area (F 1 , F- 2 ), the multiplexing of the current path using the second current collector 176, the length of the current path It has a structure in which resistance is minimized through minimization or the like.
- the AC resistance of the cylindrical battery 200 measured through a resistance meter between the positive and negative poles, that is, between the terminal 172 and the flat surface 171a around it, is 0.5 milliohm to 4 milliohms suitable for fast charging.
- Ohm (miliohm) preferably 1 milliohm (miliohm) to 4 milliohm (miliohm) may be.
- Cylindrical battery 200 since the terminal 172 having a positive polarity and the flat surface 171a having a negative polarity are located in the same direction, the cylindrical battery 200 using the bus bar 210 It is possible to easily implement their electrical connection.
- the coupling area of the bus bar 210 is sufficiently secured to resist resistance of the battery pack including the cylindrical battery 200 . can be sufficiently lowered.
- the cylindrical battery according to the above-described embodiments (variations) may be used to manufacture a battery pack.
- 16 is a diagram schematically illustrating a configuration of a battery pack according to an embodiment of the present invention.
- a battery pack 300 includes an assembly to which a cylindrical battery 301 is electrically connected and a pack housing 302 accommodating the assembly.
- the cylindrical battery 301 may be any one of the batteries according to the above-described embodiments (modified examples).
- parts such as a bus bar, a cooling unit, and an external terminal for electrical connection of the cylindrical batteries 301 are omitted for convenience of illustration.
- the battery pack 300 may be mounted in a vehicle.
- the vehicle may be, for example, an electric vehicle, a hybrid vehicle, or a plug-in hybrid vehicle.
- the automobile includes a four-wheeled vehicle or a two-wheeled vehicle.
- 17 is a view for explaining a vehicle including the battery pack 300 of FIG. 16 .
- a vehicle V according to an embodiment of the present invention includes a battery pack 300 according to an embodiment of the present invention.
- the vehicle V operates by receiving power from the battery pack 300 according to an embodiment of the present invention.
- a region where 10 or more uncoated areas overlap in the radial direction of the electrode assembly is sufficiently secured to prevent damage to the separator or the active material layer during welding of the current collector.
- the electrolyte injection process and welding of the battery housing and the current collector can be carried out easily.
- a cylindrical battery having a low internal resistance and improved welding strength between a current collector and an uncoated region, a battery pack including the same, and a vehicle.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Passenger Equipment (AREA)
- Primary Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Cell Separators (AREA)
Abstract
Description
Claims (78)
- 제1전극 및 제2전극과 이들 사이에 개재된 분리막이 축을 중심으로 권회되어 코어와 외주면을 정의한 전극 조립체에 있어서,상기 제1전극은 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 노출된 무지부를 포함하고,상기 무지부의 일부는 상기 전극 조립체의 반경 방향으로 절곡됨으로써 상기 무지부의 중첩 레이어들을 포함하는 절곡 표면영역을 형성하고, 상기 절곡 표면영역의 일부 영역은 상기 전극 조립체의 권취 축 방향으로 상기 무지부의 적층수가 10 이상인 것을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 제1전극의 총 권회턴수를 n1이라고 정의하고, k번째 권회턴 위치에서 권회턴 인덱스 k(1~n1의 자연수)를 총 권회턴수 n1로 나눗셈 연산한 값을 권회턴 인덱스 k에 대한 상대 반경 위치 R1,k라고 정의하면, 무지부의 적층수가 10 이상인 조건을 만족하는 R1,k의 반경 방향 구간의 길이 비율이 무지부가 절곡된 상대 반경 위치 구간 대비 적어도 30% 이상인 것을 특징으로 하는 전극 조립체.
- 제2항에 있어서,무지부의 적층수가 10 이상인 조건을 만족하는 R1,k의 반경 방향 구간 길이 비율이 무지부가 절곡된 상대 반경 위치 구간 대비 30% 내지 85%인 것을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 제2전극은 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 노출된 무지부를 포함하고,상기 무지부의 일부는 상기 전극 조립체의 반경 방향으로 절곡됨으로써 상기 무지부의 중첩 레이어들을 포함하는 절곡 표면영역을 형성하고, 상기 절곡 표면영역의 일부 영역은 상기 전극 조립체의 권취 축 방향으로 상기 무지부의 적층수가 10 이상인 것을 특징으로 하는 전극 조립체.
- 제4항에 있어서,상기 제2전극의 총 권회턴수를 n2라고 정의하고, k번째 권회턴 위치에서 권회턴 인덱스 k(1~n2의 자연수)를 총 권회턴수 n2로 나눗셈 연산한 값을 권회턴 인덱스 k에 대한 상대 반경 위치 R2,k라고 정의하면, 무지부의 적층수가 10 이상인 조건을 만족하는 R2,k의 반경 방향 구간의 길이 비율이 상기 무지부가 절곡된 상대 반경 위치 구간 대비 적어도 30% 이상인 것을 특징으로 하는 전극 조립체.
- 제5항에 있어서,무지부의 적층수가 10 이상인 조건을 만족하는 R2,k의 반경 방향 구간의 길이 비율이 상기 무지부가 절곡된 상대 반경 위치 구간 대비 30% 내지 85%인 것을 특징으로 하는 전극 조립체.
- 제2항에 있어서,상기 제1전극의 권회 구조에 있어서 첫번째 권회턴의 상대 반경 위치 R1,1부터 미리 설정된 k*번째 권회턴의 제1상대 반경 위치 R1,k*까지 구간의 무지부 높이가 권회턴수 k*+1의 상대 반경 위치 R1,k*+1 내지 상대 반경 위치 1까지 구간의 무지부 높이보다 작은 것을 특징으로 하는 전극 조립체.
- 제2항에 있어서,상기 제1전극의 권회 구조에 있어서, 첫 번째 권회턴의 상대 반경 위치 R1,1부터 미리 설정된 k*번째 권회턴의 제1상대 반경 위치 R1,k*까지 구간의 무지부는 그 높이가 절곡된 무지부들이 중첩되어 형성하는 상기 절곡 표면영역보다 낮은 것을 특징으로 하는 전극 조립체.
- 제2항에 있어서,상기 제1전극의 권회 구조에 있어서, 첫 번째 권회턴에 상대 반경 위치 R1,1부터 k*번째 권회턴의 제1상대 반경 위치 R1,k*까지의 구간은 전극 조립체의 코어를 향해 절곡되지 않는 것을 특징으로 하는 전극 조립체.
- 제5항에 있어서,제2전극의 권회 구조에 있어서 첫 번째 권회턴의 상대 반경 위치 R2,1부터 미리 설정된 k*번째 권회턴의 제1상대 반경 위치 R2,k*까지 구간의 무지부 높이가 k*+1번째 권회턴의 상대 반경 위치 R2,k*+1 내지 상대 반경 위치 1까지 구간의 무지부 높이보다 작은 것을 특징으로 하는 전극 조립체.
- 제5항에 있어서,첫 번째 권회턴의 상대 반경 위치 R2,1부터 미리 설정된 k*번째 권회턴의 제1상대 반경 위치 R2,k*까지의 구간에서 무지부는 그 높이가 절곡된 무지부들이 중첩되어 형성하는 절곡 표면영역보다 낮은 것을 특징으로 하는 전극 조립체.
- 제5항에 있어서,첫 번째 권회턴의 상대 반경 위치 R2,1부터 미리 설정된 k*번째 권회턴의 제1상대 반경 위치 R2,k*까지 구간의 무지부는 전극 조립체의 코어를 향해 절곡되지 않는 것을 특징으로 하는 전극 조립체.
- 제1항 또는 제4항에 있어서,상기 제1전극 또는 제2전극의 무지부는 서로 독립적으로 절곡 가능한 복수의 분절편으로 분할되어 있는 것을 특징으로 하는 전극 조립체.
- 제13항에 있어서,복수의 분절편 각각은 절곡 라인을 밑변으로 하는 기하학적 도형의 형태를 가지며,상기 기하학적 도형은 하나 이상의 직선, 하나 이상의 곡선 또는 이들이 조합이 연결된 것임을 특징으로 하는 전극 조립체.
- 제14항에 있어서,상기 기하학적 도형은 밑변으로부터 상부로 가면서 폭이 단계적으로 또는 연속적으로 감소하는 것을 특징으로 하는 전극 조립체.
- 제15항에 있어서,상기 기하학적 도형의 밑변과 이것과 교차하는 측변 사이의 하부 내각은 60도 내지 85도임을 특징으로 하는 전극 조립체.
- 제16항에 있어서,상기 복수의 분절편은 상기 하부 내각이 상기 전극 조립체의 권회 방향과 평행한 일 방향을 따라 단계적으로 또는 점진적으로 증가하는 것을 특징으로 하는 전극 조립체.
- 제14항에 있어서,복수의 분절편 각각은 절곡 라인을 밑변으로 하는 사다리꼴 도형의 형태를 가지며,상기 전극 조립체의 코어 중심을 기준으로 분절편이 배치된 권회턴의 반경을 r, 분절편의 하부에 대응되는 권회턴의 원호 길이를 Larc, 반경이 r인 권회턴에 인접 배치된 분절편 쌍의 측변이 서로 평행하다는 가정이 적용될 때의 분절편 하부 내각을 θassumption이라고 할 때, 상기 인접 배치된 분절편 쌍의 실제 하부 내각 θreal는 하기 수식을 만족하는 것을 특징으로 하는,θreal > θassumptionθassumption = 90°- 360°*(Larc/2πr)*0.5전극 조립체.
- 제18항에 있어서,상기 전극 조립체의 코어 중심을 기준으로 상기 분절편의 하부에 대응되는 권회턴의 원호 길이 Larc에 대응되는 원주각이 45도 이하임을 특징으로 하는 전극 조립체.
- 제18항에 있어서,상기 전극 조립체의 코어 중심을 기준으로 반경이 r인 권회턴에 배치된 인접하는 분절편들의 중첩율을 수식 (θreal/θassumptoin-1)으로 정의할 때, 분절편의 중첩율은 0보다 크고 0.05 이하임을 특징으로 하는 전극 조립체.
- 제14항에 있어서,상기 전극 조립체의 코어 중심을 기준으로 반경이 r인 권회턴에 배치된 인접하는 분절편 쌍을 통과하는 가상의 원을 그렸을 때, 각 분절편을 통과하는 원호의 쌍이 서로 중첩되는 것을 특징으로 하는 전극 조립체.
- 제21항에 있어서,각 분절편을 통과하는 원호의 길이 대비 중첩되는 원호의 길이 비율을 분절편의 중첩율로 정의할 때, 분절편의 중첩율은 0보다 크고 0.05 이하임을 특징으로 하는 전극 조립체.
- 제2항에 있어서,상기 제1전극의 권회 구조에 있어서 첫 번째 권회턴의 상대 반경 위치 R1,1부터 k*번째 권회턴의 제1 상대 반경 위치 R1,k*까지 구간의 무지부는 그 높이가 상대 반경 위치 R1,k*+1 내지 상대 반경 위치 1까지 구간의 무지부 높이보다 작고 코어측을 향해 절곡되지 않는 것을 특징으로 하는 전극 조립체.
- 제23항에 있어서,상대 반경 위치 R1,1부터 R1,k*까지에 대응되는 상기 제1전극의 길이는 상대 반경 위치 R1,k*+1 내지 1까지에 대응되는 상기 제1전극의 길이 대비 1% 내지 30%임을 특징으로 하는 전극 조립체.
- 제2항에 있어서,상기 제1전극의 권회 구조에 있어서, k*+1번째 권회턴의 상대 반경 위치 R1,k*+1의 무지부 절곡 길이 fd1,k*+1는 첫 번째 권회턴의 상대 반경 위치 R1,1 내지 k*번째 상대 반경 위치 R1,k*까지의 반경 방향 길이보다 짧은 것을 특징으로 하는 전극 조립체.
- 제2항에 있어서,상기 제1전극의 권회 구조에 있어서, 상기 전극 조립체의 코어 반경을 rc라고 정의할 때, 코어의 중심부터 0.90rc 구간이 k*+1번째 권회턴의 상대 반경 위치 R1,k*+1 내지 1의 구간에 위치하는 무지부의 절곡부에 의해 차폐되지 않는 것을 특징으로 하는 전극 조립체.
- 제26항에 있어서,k*+1번째 권회턴의 상대 반경 위치 R1,k*+1의 무지부 절곡 길이 fd1,k*+1, 코어의 반경 rc 및, 상대 반경 위치 R1,k*+1이 전극 조립체의 중심으로부터 이격된 거리 d1,k*+1은 하기 수식을 만족하는 것을 특징으로 하는,fd1,k*+1 + 0.90*rc ≤ d1,k*+1전극 조립체.
- 제5항에 있어서,상기 제2전극의 권회 구조에 있어서 첫 번째 권회턴의 상대 반경 위치 R2,1 내지 k*번째 권회턴의 제1상대 반경 위치 R2,k*까지 구간의 무지부는 그 높이가 k*+1번째 권회턴의 상대 반경 위치 R2,k*+1 내지 상대 반경 위치 1까지 구간의 무지부 높이보다 작고 코어측을 향해 절곡되지 않는 것을 특징으로 하는 전극 조립체.
- 제28항에 있어서,상대 반경 위치 R2,1부터 R2,k*까지에 대응되는 상기 제2전극의 길이는 상대 반경 위치 R2,k*+1 내지 1까지에 대응되는 상기 제2전극의 길이 대비 1% 내지 30%임을 특징으로 하는 전극 조립체.
- 5항에 있어서,상기 제2전극의 권취구조에 있어서, k*+1번째 권회턴의 상대 반경 위치 R2,k*+1에 위치하는 무지부의 절곡 길이 fd2,k*+1는 첫 번째 권회턴의 상대 반경 위치 R2,1 내지 k*번째 권회턴의 제1상대 반경 위치 R2,k*까지의 반경 방향 길이보다 짧은 것을 특징으로 하는 전극 조립체.
- 제5항에 있어서,상기 제2전극의 권취구조에 있어서, 상기 전극 조립체의 코어 반경을 rc라고 정의할 때, 코어의 중심부터 0.90rc 구간이 k*+1번째 권회턴의 상대 반경 위치 R2,k*+1 내지 상대 반경 위치 1의 구간에 위치하는 제2전극의 무지부의 절곡부에 의해 차폐되지 않는 것을 특징으로 하는 전극 조립체.
- 제31항에 있어서,k*+1번째 권회턴의 상대 반경 위치 R2,k*+1의 무지부 절곡 길이 fd2,k*+1, 코어의 반경 rc 및, 상대 반경 위치 R2,k*+1이 전극 조립체의 중심으로부터 이격된 거리 d2,k*+1은 하기 수식을 만족하는 것을 특징으로 하는,fd2,k*+1 + 0.90*rc ≤ d2,k*+1전극 조립체.
- 제2항에 있어서,상기 제1전극의 권회 구조에 있어서 k*+1번째 권회턴의 상대 반경 위치 R1,k*+1 내지 미리 설정된 k@번째 권회턴의 제2상대 반경 위치 R1,k@까지 구간의 무지부는 복수의 분절편으로 분할되어 있고 그 높이가 권취 방향과 평행한 일 방향을 따라 점진적으로 또는 단계적으로 증가하는 것을 특징으로 하는 전극 조립체.
- 제33항에 있어서,상대 반경 위치 R1,k*+1 내지 R1,k@까지 구간의 반경 방향 길이는 코어를 제외한 제1전극의 권회 구조의 반경 대비 1% 내지 56%임을 특징으로 하는 전극 조립체.
- 제2항에 있어서,상기 제1전극의 권회 구조에 있어서 미리 설정된 k@+1번째 권회턴의 상대 반경 위치 R1,k@+1부터 상대 반경 위치 1까지 제1전극의 무지부는 복수의 분절편으로 분할되어 있고, 복수의 분절편 높이는 상대 반경 위치 R1,k@+1부터 상대 반경 위치 1까지 실질적으로 동일한 것을 특징으로 하는 전극 조립체.
- 제5항에 있어서,상기 제2전극의 권회 구조에 있어서 k*+1번째 권회턴의 상대 반경 위치 R2,k*+1 내지 미리 설정된 k@번째 권회턴의 제2상대 반경 위치 R2,k@까지 구간의 무지부는 복수의 분절편으로 분할되어 있고 그 높이가 권회 방향과 평행한 일 방향을 따라 단계적으로 또는 점진적으로 증가하는 것을 특징으로 하는 전극 조립체.
- 제36항에 있어서,상대 반경 위치 R2,k*+1 내지 R2,k@까지 구간의 반경 방향 길이는 코어를 제외한 제2전극의 권회 구조의 반경 대비 1% 내지 56%임을 특징으로 하는 전극 조립체.
- 제5항에 있어서,상기 제2전극의 권회 구조에 있어서 k@+1번째 권회턴의 제2상대 반경 위치 R2,k@+1부터 상대 반경 위치 1까지 제2전극의 무지부는 복수의 분절편으로 분할되어 있고, 복수의 분절편 높이는 k@+1번째 권회턴의 상대 반경 위치 R2,k@+1부터 상대 반경 위치 1까지 실질적으로 동일한 것을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 제1전극의 권회 구조에 있어서, 상기 전극 조립체의 반경 방향으로 절곡되는 무지부는 독립적으로 절곡 가능한 복수의 분절편으로 분할되고,복수의 분절편의 권취 축 방향의 높이 및 권취 방향의 폭 중 적어도 하나는 개별적으로 또는 그룹별로 권회 방향과 평행한 일 방향을 따라 점진적으로 또는 단계적으로 증가하는 것을 특징으로 하는 전극 조립체.
- 제4항에 있어서,상기 제2전극의 권회 구조에 있어서, 상기 전극 조립체의 반경 방향으로 절곡되는 무지부는 독립적으로 절곡 가능한 복수의 분절편으로 분할되고,복수의 분절편의 권취 축 방향의 높이 및 권취 방향의 폭 중 적어도 하나는 개별적으로 또는 그룹별로 권회 방향과 평행한 일 방향을 따라 점진적으로 또는 단계적으로 증가하는 것을 특징으로 하는 전극 조칩체
- 제13항에 있어서,복수의 분절편 각각은, 권취 방향에서 1 내지 11mm의 폭 조건; 권취 축 방향에서 2 내지 10mm의 높이 조건; 및 권취 방향에서 0.05 내지 1mm의 이격 피치 조건 중에서 적어도 하나 이상의 조건을 충족하는 것을 특징으로 하는 전극 조립체.
- 제13항에 있어서,상기 복수의 분절편 사이에는 절단홈이 개재되고,상기 절단홈의 하단과 상기 제1전극 또는 상기 제2전극의 활물질층 사이에 소정의 갭이 구비되는 것을 특징으로 하는 전극 조립체.
- 제32항에 있어서,상기 갭의 길이는 0.2 내지 4mm임을 특징으로 하는 전극 조립체.
- 제13항에 있어서,복수의 분절편은 상기 전극 조립체의 권취 방향을 따라 복수의 분절편 그룹을 형성하며, 동일한 분절편 그룹에 속한 분절편들은 권취 방향의 폭, 권취 축 방향의 높이 및 권취 방향의 이격 피치 중 적어도 하나 이상이 서로 실질적으로 동일한 것을 특징으로 하는 전극 조립체.
- 제44항에 있어서,동일한 분절편 그룹에 속한 분절편들은 상기 전극 조립체의 권취 방향과 평행한 일 방향으로 가면서 권취 방향의 폭, 권취 축 방향의 높이 및 권취 방향의 이격 피치 중 적어도 하나가 점진적으로 또는 단계적으로 증가하는 것을 특징으로 하는 전극 조립체.
- 제44항에 있어서,복수의 분절편 그룹 중에서 적어도 일부는 전극 조립체의 동일한 권회턴에 배치되는 것을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 제1전극의 무지부에 의해 형성되는 절곡 표면영역은, 상기 전극 조립체의 외주측으로부터 코어측으로 적층수 증가구간과 적층수 균일구간을 포함하고,상기 적층수 증가구간은 무지부의 적층수가 전극 조립체의 코어를 향해 증가하는 구간으로 정의되고, 상기 적층수 균일구간은 상기 무지부의 적층수 증가가 멈추는 위치부터 상기 무지부의 절곡이 시작되는 반경 위치까지의 구간으로 정의되고,상기 적층수 균일구간의 반경 방향 길이는 무지부의 절곡이 시작된 권회턴부터 무지부의 절곡이 끝나는 권회턴까지의 반경 방향 길이 대비 30% 이상임을 특징으로 하는 전극 조립체.
- 제5항에 있어서,상기 제2전극의 무지부에 의해 형성되는 절곡 표면영역은, 상기 전극 조립체의 외주측으로부터 코어측으로 적층수 증가구간과 적층수 균일구간을 포함하고,상기 적층수 증가구간은 무지부의 적층수가 전극 조립체의 코어를 향해 증가하는 구간으로 정의되고, 상기 적층수 균일구간은 상기 무지부의 적층수 증가가 멈추는 위치부터 상기 무지부의 절곡이 시작되는 반경 위치까지의 구간으로 정의되고,상기 적층수 균일구간의 반경 방향 길이는 무지부의 절곡이 시작된 권회턴부터 무지부의 절곡이 끝나는 권회턴까지의 반경 방향 길이 대비 30% 이상임을 특징으로 하는 전극 조립체.
- 제4항에 있어서,상기 제1전극 및 상기 제2전극의 두께는 80um 내지 250um이고,상기 전극 조립체의 반경 방향으로 인접하는 권회턴에 위치한 무지부 간격은 200um 내지 500um임을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 제1전극의 무지부의 두께는 10um 내지 25um임을 특징으로 하는 전극 조립체.
- 제4항에 있어서,상기 제2전극의 무지부의 두께는 5um 내지 20um임을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 제1전극의 무지부에 의해 형성된 절곡 표면영역의 일부 영역은 무지부의 중첩 레이어들의 총 적층 두께가 100um 내지 975um임을 특징으로 하는 전극 조립체.
- 제52항에 있어서,상기 제1전극의 무지부는 서로 독립 가능한 복수의 분절편으로 분할되어 있고 상기 제1전극은 분절편의 높이가 가변되는 높이 가변 구간과 분절편의 높이가 균일한 높이 균일 구간을 포함하고, 상기 절곡 표면영역 중에서 상기 높이 균일 구간에 포함된 분절편이 상기 조립체의 반경 방향을 따라 절곡됨으로써 형성된 영역은 분절편의 높이에 대한 절곡 표면영역의 무지부 적층 두께의 비율이 1.0% 내지 16.3%임을 특징으로 하는 전극 조립체.
- 제4항에 있어서,상기 제2전극의 무지부에 의해 형성된 절곡 표면영역의 일부 영역은 무지부의 중첩 레이어들의 총 적층 두께가 50um 내지 780um임을 특징으로 하는 전극 조립체.
- 제54항에 있어서,상기 제2전극의 무지부는 서로 독립 가능한 복수의 분절편으로 분할되어 있고 상기 제2전극은 분절편의 높이가 가변되는 높이 가변 구간과 분절편의 높이가 균일한 높이 균일 구간을 포함하고, 상기 절곡 표면영역 중에서 상기 높이 균일 구간에 포함된 분절편이 상기 조립체의 반경 방향을 따라 절곡됨으로써 형성된 영역은 분절편의 높이에 대한 절곡 표면영역의 무지부 적층 두께의 비율이 0.5% 내지 13.0%임을 특징으로 하는 전극 조립체
- 제1전극 및 제2전극과 이들 사이에 개재된 분리막이 축을 중심으로 권취되어 코어와 외주면을 정의한 전극 조립체에 있어서,상기 제1전극은 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 제1무지부를 포함하고,상기 제1무지부의 일부는 상기 전극 조립체의 반경 방향으로 절곡되어 제1절곡 표면영역을 형성하고, 상기 제1절곡 표면영역의 일부 영역은 상기 제1무지부의 적층 두께가 100 um 내지 975um임을 특징으로 하는 전극 조립체.
- 제56항에 있어서,상기 제1전극의 제1무지부는 서로 독립 가능한 복수의 분절편으로 분할되어 있고 상기 제1전극은 분절편의 높이가 가변되는 높이 가변 구간과 분절편의 높이가 균일한 높이 균일 구간을 포함하고, 상기 절곡 표면영역 중에서 상기 높이 균일 구간에 포함된 분절편이 상기 조립체의 반경 방향을 따라 절곡됨으로써 형성된 영역은 분절편의 높이에 대한 절곡 표면영역의 무지부 적층 두께의 비율이 1.0% 내지 16.3%임을 특징으로 하는 전극 조립체.
- 제56항에 있어서,상기 제2전극은 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 노출된 제2무지부를 포함하고,상기 제2무지부의 일부는 상기 전극 조립체의 반경 방향으로 절곡되어 제2절곡 표면영역을 형성하고,상기 제2절곡 표면영역의 일부 영역은 상기 제2무지부의 적층 두께가 50 um 내지 780um임을 특징으로 하는 전극 조립체.
- 제58항에 있어서,상기 제2전극의 제2무지부는 서로 독립 가능한 복수의 분절편으로 분할되어 있고 상기 제2전극은 분절편의 높이가 가변되는 높이 가변 구간과 분절편의 높이가 균일한 높이 균일 구간을 포함하고, 상기 절곡 표면영역 중에서 상기 높이 균일 구간에 포함된 분절편이 상기 조립체의 반경 방향을 따라 절곡됨으로써 형성된 영역은 분절편의 높이에 대한 절곡 표면영역의 무지부 적층 두께의 비율이 0.5% 내지 13.0%임을 특징으로 하는 전극 조립체
- 제1전극 및 제2전극과 이들 사이에 개재된 분리막이 축을 중심으로 권취되어 코어와 외주면을 정의한 전극 조립체로서, 상기 제1전극 및 상기 제2전극 중 적어도 하나는 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 노출된 무지부를 포함하고, 상기 무지부의 적어도 일부는 상기 전극 조립체의 반경 방향으로 절곡되어 절곡 표면영역을 형성하고, 상기 절곡 표면영역의 일부 영역은 상기 무지부의 적층수가 10 이상인 것인 전극 조립체;상기 전극 조립체가 수납되며, 상기 제1전극 및 상기 제2전극 중 하나와 전기적으로 연결되어 제1극성을 띠는 전지 하우징;상기 전지 하우징의 개방단을 밀봉하는 밀봉체;상기 제1전극 및 상기 제2전극 중 다른 하나와 전기적으로 연결되고, 표면이 외부로 노출된 제2극성을 띠는 단자; 및상기 절곡 표면영역에 용접되고, 상기 전지 하우징 또는 상기 단자 중 어느 하나에 전기적으로 연결되는 집전체를 포함하고,상기 집전체의 용접 영역은 상기 무지부의 적층수가 10 이상인 절곡 표면영역과 중첩되는 것을 특징으로 하는 배터리.
- 제60항에 있어서,상기 제1전극은 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 노출된 제1무지부를 포함하고,상기 제1전극의 총 권회턴수를 n1이라고 정의하고, k번째 권회턴 위치에서 권회턴 인덱스 k(1~n1의 자연수)를 총 권회턴수 n1로 나눗셈 연산한 값을 권회턴 인덱스 k에 대한 상대 반경 위치 R1,k라고 정의하면, 상기 제1무지부의 적층수가 10 이상인 조건을 만족하는 R1,k의 반경 방향 구간의 길이 비율이 상기 제1무지부가 절곡된 상대 반경 위치 구간 대비 적어도 30% 이상임을 특징으로 하는 배터리.
- 제60항에 있어서,상기 제2전극은 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 노출된 제2무지부를 포함하고,상기 제2전극의 총 권회턴수를 n2라고 정의하고, k번째 권회턴 위치에서 권회턴 인덱스 k(1~n2의 자연수)를 총 권회턴수 n2로 나눗셈 연산한 값을 권회턴 인덱스 k에 대한 상대 반경 위치 R2,k라고 정의하면, 상기 제2무지부의 적층수가 10 이상인 조건을 만족하는 R2,k의 반경 방향 구간의 길이 비율이 상기 제2무지부가 절곡된 상대 반경 위치 구간 대비 적어도 30% 이상인 것을 특징으로 하는 배터리.
- 제60항에 있어서,상기 집전체의 용접 영역은 상기 무지부의 적층수가 10 이상인 절곡 표면영역과 50% 이상 중첩되는 것을 특징으로 하는 배터리.
- 제63항에 있어서,상기 집전체의 용접 영역은 용접 강도가 2kgf/cm2 이상임을 특징으로 하는 배터리.
- 제60항에 있어서,상기 용접 영역은 상기 전극 조립체의 코어 중심을 기준으로 반경 방향으로 4mm 이상 및 상기 전극 조립체 반경의 50% 이하의 거리로 이격되어 있는 것을 특징으로 하는 배터리.
- 제1전극 및 제2전극과 이들 사이에 개재된 분리막이 축을 중심으로 권취되어 코어와 외주면을 정의한 전극 조립체로서, 상기 제1전극은 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 제1무지부를 포함하고, 상기 제1무지부의 일부는 상기 전극 조립체의 반경 방향으로 절곡되어 제1절곡 표면영역을 형성하고, 상기 제1절곡 표면영역의 일부 영역은 상기 제1무지부의 적층 두께가 100 um 내지 975um인 것인 전극 조립체;상기 전극 조립체가 수납되며, 상기 제1전극 및 상기 제2전극 중 하나와 전기적으로 연결되어 제1극성을 띠는 전지 하우징;상기 전지 하우징의 개방단을 밀봉하는 밀봉체;상기 제1전극 및 상기 제2전극 중 다른 하나와 전기적으로 연결되고, 표면이 외부로 노출된 제2극성을 띠는 단자; 및상기 제1절곡 표면영역에 용접되고, 상기 전지 하우징 또는 상기 단자 중 어느 하나에 전기적으로 연결되는 제1집전체를 포함하고,상기 제1집전체의 용접 영역은 상기 제1무지부의 적층 두께가 100um 내지 975um인 상기 제1절곡 표면영역의 일부 영역과 중첩되는 것을 특징으로 하는 배터리.
- 제66항에 있어서,상기 제1전극의 제1무지부는 서로 독립 가능한 복수의 분절편으로 분할되어 있고 상기 제1전극은 분절편의 높이가 가변되는 높이 가변 구간과 분절편의 높이가 균일한 높이 균일 구간을 포함하고, 상기 제1절곡 표면영역 중에서 상기 높이 균일 구간에 포함된 분절편이 상기 조립체의 반경 방향을 따라 절곡됨으로써 형성된 영역은 분절편의 높이에 대한 제1절곡 표면영역의 무지부 적층 두께의 비율이 1.0% 내지 16.3%임을 특징으로 하는 배터리.
- 제66항에 있어서,제1집전체의 용접 영역은 용접 강도가 2kgf/cm2 이상임을 특징으로 하는 배터리.
- 제66항에 있어서,상기 제2전극은 장변 단부에 상기 전극 조립체의 권취 축 방향을 따라 상기 분리막의 외부로 노출된 제2무지부를 포함하고, 상기 제2무지부의 일부는 상기 전극 조립체의 반경 방향으로 절곡되어 제2절곡 표면영역을 형성하고, 상기 제2절곡 표면영역의 일부 영역은 상기 제2무지부의 적층 두께가 50 um 내지 780um이고,상기 제2절곡 표면영역에 용접되고, 상기 전지 하우징 또는 상기 단자 중 다른 하나에 전기적으로 연결되는 제2집전체를 포함하고,상기 제2집전체의 용접 영역은 상기 제2무지부의 적층 두께가 50um 내지 780um인 상기 제2절곡 표면영역의 일부 영역과 중첩되는 것을 특징으로 하는 배터리.
- 제69항에 있어서,상기 제2전극의 제2무지부는 서로 독립 가능한 복수의 분절편으로 분할되어 있고 상기 제2전극은 분절편의 높이가 가변되는 높이 가변 구간과 분절편의 높이가 균일한 높이 균일 구간을 포함하고, 상기 제2절곡 표면영역 중에서 상기 높이 균일 구간에 포함된 분절편이 상기 조립체의 반경 방향을 따라 절곡됨으로써 형성된 영역은 분절편의 높이에 대한 제2절곡 표면영역의 무지부 적층 두께의 비율이 0.5% 내지 13%임을 특징으로 하는 배터리
- 제69항에 있어서,상기 제2집전체의 용접 영역은 용접 강도가 2kgf/cm2 이상임을 특징으로 하는 배터리.
- 제66항에 있어서,상기 제1집전체의 용접 영역은 상기 제1무지부의 적층 두께가 100um 내지 975um인 상기 제1절곡 표면영역의 일부 영역과 50% 이상 중첩되는 것을 특징으로 하는 배터리.
- 제69항에 있어서,상기 제2집전체의 용접 영역은 상기 제2무지부의 적층 두께가 50um 내지 780um인 상기 제2절곡 표면영역의 일부 영역과 50% 이상 중첩되는 것을 특징으로 하는 배터리.
- 제69항에 있어서,상기 제1집전체의 용접 영역과 상기 제2집전판의 용접 영역은 상기 전극 조립체의 코어 중심을 기준으로 실질적으로 동일한 거리만큼 이격된 위치로부터 상기 전극 조립체의 반경 방향으로 연장되어 있는 것을 특징으로 하는 배터리.
- 제74항에 있어서,상기 제1집전체의 용접 영역이 연장된 길이가 상기 제2집전체의 용접 영역이 연장된 길이보다 더 긴 것을 특징으로 하는 배터리.
- 제66항에 있어서,상기 배터리의 저항은 4 miliohm 이하인 것을 특징으로 하는 배터리.
- 제60항 내지 제76항 중 어느 한 항에 따른 배터리를 포함하는 배터리 팩.
- 제77항에 따른 배터리 팩;을 포함하는 자동차.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22742838.0A EP4243195A2 (en) | 2021-01-19 | 2022-01-19 | Electrode assembly, battery, and battery pack and vehicle comprising same |
JP2023528505A JP2023550338A (ja) | 2021-01-19 | 2022-01-19 | 電極組立体、バッテリー、それを含むバッテリーパック及び自動車 |
CN202280010641.8A CN116783771A (zh) | 2021-01-19 | 2022-01-19 | 电极组件、电池以及包括该电池的电池组和车辆 |
CA3204064A CA3204064A1 (en) | 2021-01-19 | 2022-01-19 | Electrode assembly, battery, and battery pack and vehicle including the same |
US18/273,010 US20240128517A1 (en) | 2021-01-19 | 2022-01-19 | Electrode assembly, battery, and battery pack and vehicle including the same |
Applications Claiming Priority (64)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2021-0007278 | 2021-01-19 | ||
KR20210007278 | 2021-01-19 | ||
KR20210022897 | 2021-02-19 | ||
KR10-2021-0022881 | 2021-02-19 | ||
KR20210022894 | 2021-02-19 | ||
KR20210022891 | 2021-02-19 | ||
KR10-2021-0022894 | 2021-02-19 | ||
KR10-2021-0022897 | 2021-02-19 | ||
KR10-2021-0022891 | 2021-02-19 | ||
KR20210022881 | 2021-02-19 | ||
KR10-2021-0024424 | 2021-02-23 | ||
KR20210024424 | 2021-02-23 | ||
KR20210030300 | 2021-03-08 | ||
KR10-2021-0030300 | 2021-03-08 | ||
KR20210030291 | 2021-03-08 | ||
KR10-2021-0030291 | 2021-03-08 | ||
KR20210046798 | 2021-04-09 | ||
KR10-2021-0046798 | 2021-04-09 | ||
KR10-2021-0058183 | 2021-05-04 | ||
KR20210058183 | 2021-05-04 | ||
KR10-2021-0077046 | 2021-06-14 | ||
KR20210077046 | 2021-06-14 | ||
KR10-2021-0084326 | 2021-06-28 | ||
KR20210084326 | 2021-06-28 | ||
KR20210131208 | 2021-10-01 | ||
KR20210131215 | 2021-10-01 | ||
KR10-2021-0131208 | 2021-10-01 | ||
KR20210131205 | 2021-10-01 | ||
KR10-2021-0131205 | 2021-10-01 | ||
KR10-2021-0131215 | 2021-10-01 | ||
KR10-2021-0131225 | 2021-10-01 | ||
KR10-2021-0131207 | 2021-10-01 | ||
KR20210131225 | 2021-10-01 | ||
KR20210131207 | 2021-10-01 | ||
KR10-2021-0137001 | 2021-10-14 | ||
KR20210137001 | 2021-10-14 | ||
KR10-2021-0137856 | 2021-10-15 | ||
KR1020210137856A KR20220105112A (ko) | 2021-01-19 | 2021-10-15 | 원통형 이차전지, 그리고 이를 포함하는 배터리 팩 및 자동차 |
KR20210142196 | 2021-10-22 | ||
KR10-2021-0142196 | 2021-10-22 | ||
KR20210153472 | 2021-11-09 | ||
KR10-2021-0153472 | 2021-11-09 | ||
KR20210160823 | 2021-11-19 | ||
KR10-2021-0160823 | 2021-11-19 | ||
KR20210163809 | 2021-11-24 | ||
KR10-2021-0163809 | 2021-11-24 | ||
KR10-2021-0165866 | 2021-11-26 | ||
KR20210165866 | 2021-11-26 | ||
KR20210172446 | 2021-12-03 | ||
KR10-2021-0172446 | 2021-12-03 | ||
KR10-2021-0177091 | 2021-12-10 | ||
KR20210177091 | 2021-12-10 | ||
KR10-2021-0194593 | 2021-12-31 | ||
KR20210194572 | 2021-12-31 | ||
KR10-2021-0194572 | 2021-12-31 | ||
KR20210194611 | 2021-12-31 | ||
KR10-2021-0194612 | 2021-12-31 | ||
KR10-2021-0194610 | 2021-12-31 | ||
KR20210194612 | 2021-12-31 | ||
KR20210194610 | 2021-12-31 | ||
KR10-2021-0194611 | 2021-12-31 | ||
KR1020210194593A KR20220105118A (ko) | 2021-01-19 | 2021-12-31 | 원통형 배터리 셀, 그리고 이를 포함하는 배터리 팩 및 자동차 |
KR10-2022-0001802 | 2022-01-05 | ||
KR20220001802 | 2022-01-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2022158862A2 true WO2022158862A2 (ko) | 2022-07-28 |
WO2022158862A3 WO2022158862A3 (ko) | 2022-09-15 |
Family
ID=79730080
Family Applications (8)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/001006 WO2022158858A2 (ko) | 2021-01-19 | 2022-01-19 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001011 WO2022158863A2 (ko) | 2021-01-19 | 2022-01-19 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001007 WO2022158859A2 (ko) | 2021-01-19 | 2022-01-19 | 배터리 및 이에 적용되는 집전체, 그리고 이를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001008 WO2022158860A2 (ko) | 2021-01-19 | 2022-01-19 | 배터리 및 이에 적용되는 집전체, 그리고 이러한 배터리를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001009 WO2022158861A2 (ko) | 2021-01-19 | 2022-01-19 | 전지 및 이에 적용되는 집전체, 그리고 이러한 전지를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001005 WO2022158857A2 (ko) | 2021-01-19 | 2022-01-19 | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001012 WO2022158864A2 (ko) | 2021-01-19 | 2022-01-19 | 전극 단자의 고정 구조 및 이를 포함하는 배터리, 배터리 팩 및 자동차 |
PCT/KR2022/001010 WO2022158862A2 (ko) | 2021-01-19 | 2022-01-19 | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 |
Family Applications Before (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/001006 WO2022158858A2 (ko) | 2021-01-19 | 2022-01-19 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001011 WO2022158863A2 (ko) | 2021-01-19 | 2022-01-19 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001007 WO2022158859A2 (ko) | 2021-01-19 | 2022-01-19 | 배터리 및 이에 적용되는 집전체, 그리고 이를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001008 WO2022158860A2 (ko) | 2021-01-19 | 2022-01-19 | 배터리 및 이에 적용되는 집전체, 그리고 이러한 배터리를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001009 WO2022158861A2 (ko) | 2021-01-19 | 2022-01-19 | 전지 및 이에 적용되는 집전체, 그리고 이러한 전지를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001005 WO2022158857A2 (ko) | 2021-01-19 | 2022-01-19 | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 |
PCT/KR2022/001012 WO2022158864A2 (ko) | 2021-01-19 | 2022-01-19 | 전극 단자의 고정 구조 및 이를 포함하는 배터리, 배터리 팩 및 자동차 |
Country Status (11)
Country | Link |
---|---|
US (5) | US20240128517A1 (ko) |
EP (16) | EP4044334A3 (ko) |
JP (8) | JP2023550338A (ko) |
KR (16) | KR102437061B1 (ko) |
CN (16) | CN217655927U (ko) |
CA (8) | CA3205236A1 (ko) |
DE (8) | DE202022002774U1 (ko) |
ES (2) | ES2973526T3 (ko) |
HU (1) | HUE065419T2 (ko) |
PL (2) | PL4047725T3 (ko) |
WO (8) | WO2022158858A2 (ko) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2973526T3 (es) | 2021-01-19 | 2024-06-20 | Lg Energy Solution Ltd | Terminal de electrodo, celda de batería cilíndrica, paquete de baterías y vehículo |
SE2150506A1 (en) * | 2021-04-22 | 2022-10-23 | Northvolt Ab | A cylindrical secondary cell |
SE544360C2 (en) * | 2021-04-22 | 2022-04-19 | Northvolt Ab | Cylindrical secondary cell |
WO2023279260A1 (zh) * | 2021-07-06 | 2023-01-12 | 江苏时代新能源科技有限公司 | 电池单体、电池、用电设备及电池单体的制造方法和设备 |
CA3235893A1 (en) | 2021-10-22 | 2023-04-27 | Hae-Jin Lim | Electrode assembly, battery, and battery pack and vehicle including the same |
EP4366073A1 (en) * | 2021-10-29 | 2024-05-08 | LG Energy Solution, Ltd. | Cylindrical battery cell, and battery pack including same and vehicle including same and current collector plate |
KR102577169B1 (ko) * | 2021-12-02 | 2023-09-11 | 삼성에스디아이 주식회사 | 원통형 이차 전지 |
KR20230111855A (ko) * | 2022-01-19 | 2023-07-26 | 삼성에스디아이 주식회사 | 이차 전지 |
IT202200003533A1 (it) * | 2022-02-25 | 2023-08-25 | Gd Spa | Batteria elettrica |
IT202200003536A1 (it) * | 2022-02-25 | 2023-08-25 | Gd Spa | Metodo di assemblaggio di una batteria elettrica |
DE102022115671A1 (de) | 2022-06-23 | 2023-12-28 | Bayerische Motoren Werke Aktiengesellschaft | Speicherzelle für einen elektrischen Energiespeicher, insbesondere eines Kraftfahrzeugs, elektrischer Energiespeicher sowie Verfahren zum Herstellen einer Speicherzelle |
WO2024039186A1 (ko) * | 2022-08-16 | 2024-02-22 | 주식회사 엘지에너지솔루션 | 초음파 용접 장치 및 초음파 용접 시스템 |
WO2024043767A1 (ko) * | 2022-08-26 | 2024-02-29 | 주식회사 엘지에너지솔루션 | 압력 센서를 포함하는 원통형 배터리, 스웰링 압력 모니터링 장치 및 이를 포함하는 배터리 관리 시스템 |
WO2024045058A1 (zh) * | 2022-08-31 | 2024-03-07 | 宁德时代新能源科技股份有限公司 | 电池单体、电池及用电设备 |
EP4336632A1 (de) * | 2022-09-07 | 2024-03-13 | VARTA Microbattery GmbH | Energiespeicherelement und verfahren zum herstellen eines solchen energiespeicherelements |
WO2024057631A1 (ja) * | 2022-09-14 | 2024-03-21 | パナソニックエナジー株式会社 | 電池 |
KR102586883B1 (ko) * | 2022-09-15 | 2023-10-10 | 삼성에스디아이 주식회사 | 원통형 이차전지 |
SE2251078A1 (en) * | 2022-09-16 | 2024-03-17 | Northvolt Ab | A secondary cell |
KR102559655B1 (ko) * | 2022-09-21 | 2023-07-24 | 삼성에스디아이 주식회사 | 이차전지 |
CN115275529B (zh) * | 2022-09-27 | 2022-12-09 | 楚能新能源股份有限公司 | 圆柱型锂离子电池及其制备工艺 |
KR102619896B1 (ko) * | 2022-10-04 | 2024-01-02 | 삼성에스디아이 주식회사 | 원통형 이차 전지 |
WO2024076106A1 (ko) * | 2022-10-04 | 2024-04-11 | 주식회사 엘지에너지솔루션 | 원통형 이차전지, 그리고 이를 포함하는 배터리 팩 및 자동차 |
KR102670692B1 (ko) * | 2022-10-04 | 2024-05-30 | 삼성에스디아이 주식회사 | 원통형 이차 전지 |
KR102559656B1 (ko) * | 2022-10-06 | 2023-07-24 | 삼성에스디아이 주식회사 | 이차전지 |
CN115295860B (zh) * | 2022-10-09 | 2022-12-20 | 深圳海润新能源科技有限公司 | 二次电池的制备方法、二次电池及电池模组 |
CN115472970A (zh) * | 2022-10-13 | 2022-12-13 | 中创新航科技股份有限公司 | 圆柱电池 |
CN115621629A (zh) * | 2022-10-13 | 2023-01-17 | 中创新航科技股份有限公司 | 圆柱电池 |
CN115395146A (zh) * | 2022-10-13 | 2022-11-25 | 中创新航科技股份有限公司 | 圆柱电池 |
CN115483488A (zh) * | 2022-10-13 | 2022-12-16 | 中创新航科技股份有限公司 | 圆柱电池 |
KR102586886B1 (ko) * | 2022-10-26 | 2023-10-10 | 삼성에스디아이 주식회사 | 원통형 이차 전지 |
WO2024091065A1 (ko) * | 2022-10-27 | 2024-05-02 | 주식회사 엘지에너지솔루션 | 전지 캔과 캡의 용접 구조 및 이를 적용한 배터리 셀 |
KR102570308B1 (ko) * | 2022-10-27 | 2023-08-24 | 삼성에스디아이 주식회사 | 원통형 이차 전지 |
KR20240061226A (ko) | 2022-10-31 | 2024-05-08 | 주식회사 엘지에너지솔루션 | 이차 전지 |
WO2024101903A1 (ko) * | 2022-11-08 | 2024-05-16 | 주식회사 엘지에너지솔루션 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
WO2024101898A1 (ko) * | 2022-11-11 | 2024-05-16 | 주식회사 엘지에너지솔루션 | 배터리 셀, 배터리 팩 및 이를 포함하는 자동차 |
KR20240072732A (ko) * | 2022-11-17 | 2024-05-24 | 주식회사 엘지에너지솔루션 | 젤리롤, 이차 전지, 배터리 팩 및 자동차 |
WO2024112110A1 (ko) * | 2022-11-22 | 2024-05-30 | 주식회사 엘지에너지솔루션 | 배터리 셀, 배터리 팩 및 이를 포함하는 자동차 |
KR102614640B1 (ko) * | 2022-12-06 | 2023-12-15 | 삼성에스디아이 주식회사 | 원통형 이차 전지 |
CN115566373B (zh) * | 2022-12-07 | 2023-03-03 | 楚能新能源股份有限公司 | 一种错位型的全极耳极片、卷绕电芯和圆柱电池 |
CN218827495U (zh) * | 2022-12-14 | 2023-04-07 | 中创新航科技股份有限公司 | 电池包 |
SE2251580A1 (en) * | 2022-12-23 | 2023-09-18 | Northvolt Ab | Secondary cell |
CN115799653A (zh) * | 2022-12-29 | 2023-03-14 | 蜂巢能源科技股份有限公司 | 电芯、模组及电池包 |
KR102637571B1 (ko) * | 2023-01-02 | 2024-02-16 | 삼성에스디아이 주식회사 | 이차전지 |
KR102604971B1 (ko) * | 2023-08-04 | 2023-11-23 | (주)금양 | 애노드 집전체 |
KR102597478B1 (ko) * | 2023-08-08 | 2023-11-02 | (주)금양 | 캐소드 집전체 |
CN116722321A (zh) * | 2023-08-10 | 2023-09-08 | 宁德时代新能源科技股份有限公司 | 电极组件、电池单体及其装配方法、电池包、用电装置 |
CN116864909B (zh) * | 2023-09-01 | 2024-01-26 | 宁德时代新能源科技股份有限公司 | 电池单体、电池及用电设备 |
Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3761314A (en) | 1970-06-23 | 1973-09-25 | Accumulateurs Fixes | High discharge rate electric cells and batteries |
CN1444303A (zh) | 2002-03-08 | 2003-09-24 | 居永明 | 可反复充放电的锂离子动力电池及其制造方法 |
US6677082B2 (en) | 2000-06-22 | 2004-01-13 | The University Of Chicago | Lithium metal oxide electrodes for lithium cells and batteries |
US6680143B2 (en) | 2000-06-22 | 2004-01-20 | The University Of Chicago | Lithium metal oxide electrodes for lithium cells and batteries |
CN1309105C (zh) | 2003-12-24 | 2007-04-04 | 松下电器产业株式会社 | 卷式电化学元件用极板组和电池 |
CN108496269A (zh) | 2016-11-02 | 2018-09-04 | 株式会社Lg化学 | 电极组件及用于制造该电极组件的方法 |
CN110476273A (zh) | 2017-04-14 | 2019-11-19 | 株式会社Lg化学 | 二次电池及制造该二次电池的方法 |
CN110870099A (zh) | 2017-07-18 | 2020-03-06 | 戴森技术有限公司 | 能量存储装置 |
KR20210007278A (ko) | 2019-07-10 | 2021-01-20 | 주식회사 이음파트너스 | 골목길 위급 상황 신고 장치 |
KR20210022897A (ko) | 2019-08-21 | 2021-03-04 | 씨에스케이(주) | 스크러버용 버너 |
KR20210022891A (ko) | 2019-08-21 | 2021-03-04 | 한양대학교 산학협력단 | 차선 유지 제어 방법 및 그 장치 |
KR20210022881A (ko) | 2019-08-21 | 2021-03-04 | 한국항공우주산업 주식회사 | 회전익 항공기 자동착륙 시스템 |
KR20210022894A (ko) | 2019-08-21 | 2021-03-04 | 에이엠티 주식회사 | 챔버 내 모듈 ic 그립핑장치 |
KR20210024424A (ko) | 2019-08-23 | 2021-03-05 | 아서스테크 컴퓨터 인코포레이션 | 무선 통신 시스템에서 사이드링크 무선 베어러에 대한 헤더 압축 구성 방법 및 장치 |
KR20210030300A (ko) | 2020-10-23 | 2021-03-17 | (주)쓰리엠탑 | 협업 멀티 로봇청소기 |
KR20210030291A (ko) | 2013-12-17 | 2021-03-17 | 에스에프씨 주식회사 | 유기발광 화합물 및 이를 포함하는 유기전계발광소자 |
KR20210046798A (ko) | 2018-10-15 | 2021-04-28 | 이.온 스베리지 에이비 | 한 쌍의 도관과 충전 트렌치를 포함하는 트렌치 충전 방법 |
KR20210058183A (ko) | 2019-11-13 | 2021-05-24 | 건국대학교 산학협력단 | E형 간염바이러스에 대한 나노겔 백신용 조성물 |
KR20210077046A (ko) | 2019-12-16 | 2021-06-25 | 현대자동차주식회사 | 자율주행 차량의 운행 제어 시스템 및 방법 |
KR20210084326A (ko) | 2019-12-27 | 2021-07-07 | (주)글루가 | 네일 아트의 제조 방법 |
KR20210131207A (ko) | 2020-04-23 | 2021-11-02 | 안병로 | 필터 교체형 위생 마스크 |
KR20210131215A (ko) | 2020-04-21 | 2021-11-02 | 유아이패스, 인크. | 로봇 프로세스 자동화를 위한 테스트 자동화 |
KR20210131205A (ko) | 2020-04-23 | 2021-11-02 | 최재연 | 고성능 선루프 |
KR20210131225A (ko) | 2020-04-22 | 2021-11-02 | 베이징 바이두 넷컴 사이언스 앤 테크놀로지 코., 엘티디. | 영상 프레임 처리 방법, 장치, 전자 기기, 저장 매체 및 프로그램 |
KR20210137001A (ko) | 2019-03-12 | 2021-11-17 | 소니그룹주식회사 | 무선 통신 장치 및 방법 |
KR20210137856A (ko) | 2020-05-11 | 2021-11-18 | 삼성전자주식회사 | 디스플레이 및 카메라를 포함하는 전자 장치 |
KR20210142196A (ko) | 2019-04-16 | 2021-11-24 | 허니웰 인터내셔날 인코포레이티드 | 수소와 요오드로부터 요오드화수소를 제조하기 위한 통합된 방법 및 촉매 |
KR20210153472A (ko) | 2020-06-10 | 2021-12-17 | 주식회사 이엠피이모션캡쳐 | 모션 및 얼굴 캡쳐를 이용한 실시간 방송플랫폼 제공 방법, 장치 및 그 시스템 |
KR20220001802A (ko) | 2020-06-30 | 2022-01-06 | 주식회사 쓰리스타 | 흡배기 체크밸브가 부착된 필터교체형 마스크 |
Family Cites Families (133)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794773A (en) | 1987-07-29 | 1989-01-03 | Monarch Machine Tool Company | Method of measuring camber |
DE69404765T2 (de) * | 1993-06-04 | 1998-03-12 | Katayama Tokushu Kogyo Kk | Batteriebehälter, Blech für die Formgebung des Batteriebehälters und Verfahren für die Herstellung des Bleches |
JP2897104B2 (ja) * | 1994-06-03 | 1999-05-31 | 古河電池株式会社 | 密閉型アルカリ蓄電池の製造方法 |
JPH10106532A (ja) * | 1996-09-30 | 1998-04-24 | Sanyo Electric Co Ltd | 密閉型蓄電池 |
JP3260675B2 (ja) * | 1997-10-14 | 2002-02-25 | 日本碍子株式会社 | リチウム二次電池 |
JP4479013B2 (ja) * | 1998-02-13 | 2010-06-09 | 株式会社ジーエス・ユアサコーポレーション | 円筒形電池 |
JP3588264B2 (ja) | 1999-02-22 | 2004-11-10 | 三洋電機株式会社 | 二次電池 |
JP2001028274A (ja) | 1999-02-24 | 2001-01-30 | Sanyo Electric Co Ltd | 電気エネルギー蓄積素子 |
JP3252846B2 (ja) * | 1999-06-01 | 2002-02-04 | 日本電気株式会社 | 非水電解液二次電池およびその製造方法 |
DE10027001C2 (de) | 1999-06-01 | 2002-10-24 | Nec Corp | Sekundärbatterie mit einem nichtwässrigen Elektrolyten und Verfahren zur Herstellung dieser |
FR2796205B1 (fr) | 1999-07-08 | 2001-10-05 | Cit Alcatel | Accumulateur electrochimique etanche comportant un dispositif de reprise de courant en aluminium |
KR100325861B1 (ko) * | 1999-10-27 | 2002-03-07 | 김순택 | 밀폐전지 |
JP2001148238A (ja) | 1999-11-19 | 2001-05-29 | Sony Corp | 2次電池 |
KR100349908B1 (ko) * | 1999-12-15 | 2002-08-22 | 삼성에스디아이 주식회사 | 각형 밀폐전지 |
JP2002289170A (ja) | 2001-03-27 | 2002-10-04 | Toshiba Battery Co Ltd | アルカリ二次電池 |
DE10144281A1 (de) | 2001-09-08 | 2003-03-27 | Nbt Gmbh | Galvanisches Element mit Wickelektrodensatz |
JP4401634B2 (ja) * | 2002-09-04 | 2010-01-20 | パナソニック株式会社 | 蓄電池およびその製造方法 |
JP4654575B2 (ja) | 2003-10-27 | 2011-03-23 | パナソニック株式会社 | 円筒形電池とそれを用いた電池間接続構造 |
JP5030379B2 (ja) | 2003-12-24 | 2012-09-19 | パナソニック株式会社 | 電極群からなる捲回形電気化学素子および電池 |
CN2681364Y (zh) | 2004-02-27 | 2005-02-23 | 何策衡 | 具有极组负极封装的充电电池 |
KR100536253B1 (ko) * | 2004-03-24 | 2005-12-12 | 삼성에스디아이 주식회사 | 이차 전지 |
KR100599793B1 (ko) * | 2004-05-19 | 2006-07-13 | 삼성에스디아이 주식회사 | 이차 전지와 이에 사용되는 전극 조립체 |
KR100599792B1 (ko) | 2004-05-19 | 2006-07-13 | 삼성에스디아이 주식회사 | 이차 전지와 이에 사용되는 전극 조립체 및 집전판 |
KR20050121914A (ko) * | 2004-06-23 | 2005-12-28 | 삼성에스디아이 주식회사 | 이차 전지와 이에 사용되는 전극 조립체 |
KR100599749B1 (ko) | 2004-06-23 | 2006-07-12 | 삼성에스디아이 주식회사 | 이차 전지와 이에 사용되는 전극 조립체 |
CN101010818B (zh) | 2004-07-28 | 2011-06-08 | 株式会社杰士汤浅 | 密封电池及其制造方法以及由多个密封电池构成的电池组及其制造方法 |
KR20060022128A (ko) | 2004-09-06 | 2006-03-09 | 삼성에스디아이 주식회사 | 원통형 리튬 이온 이차 전지 및 이에 사용되는 권취형전극 조립체 |
KR100612236B1 (ko) * | 2004-09-07 | 2006-08-11 | 삼성에스디아이 주식회사 | 이차 전지와 이에 사용되는 전극 조립체 |
JP4563264B2 (ja) * | 2004-09-22 | 2010-10-13 | 日本碍子株式会社 | リチウム二次電池 |
JP2006252890A (ja) * | 2005-03-09 | 2006-09-21 | Sanyo Electric Co Ltd | 筒型二次電池及びその製造方法 |
JP5051410B2 (ja) | 2005-05-30 | 2012-10-17 | 株式会社Gsユアサ | 密閉形電池用リード、そのリードを用いた密閉形電池及びその電池の製造方法 |
KR100719740B1 (ko) * | 2005-09-22 | 2007-05-17 | 삼성에스디아이 주식회사 | 이차전지 및 그 제조방법 |
CN100468827C (zh) | 2005-12-20 | 2009-03-11 | 深圳华粤宝电池有限公司 | 电池圆柱外壳及圆柱防爆电池及其加工方法和设备 |
CN100573978C (zh) | 2005-12-30 | 2009-12-23 | 比亚迪股份有限公司 | 二次电池 |
JP5019557B2 (ja) * | 2006-02-03 | 2012-09-05 | 日立マクセルエナジー株式会社 | 筒形非水電解液一次電池 |
CN101083317A (zh) | 2006-05-31 | 2007-12-05 | 比亚迪股份有限公司 | 一种二次电池 |
JP2008041527A (ja) | 2006-08-09 | 2008-02-21 | Matsushita Electric Ind Co Ltd | 電池缶及びそれを用いた電池 |
US8568915B2 (en) * | 2006-08-11 | 2013-10-29 | Johnson Controls—SAFT Power Solutions LLC | Battery with integrally formed terminal |
JP5172138B2 (ja) | 2006-12-19 | 2013-03-27 | パナソニック株式会社 | アルカリ蓄電池 |
JP2008243811A (ja) | 2007-02-28 | 2008-10-09 | Matsushita Electric Ind Co Ltd | 電池 |
JP2008262825A (ja) | 2007-04-12 | 2008-10-30 | Hitachi Maxell Ltd | コイン形非水電解液二次電池 |
JP2008288079A (ja) * | 2007-05-18 | 2008-11-27 | Panasonic Corp | 無水銀アルカリ乾電池 |
CN201066701Y (zh) | 2007-07-13 | 2008-05-28 | 深圳市比克电池有限公司 | 锂离子电池 |
KR100922352B1 (ko) | 2007-10-02 | 2009-10-21 | 삼성에스디아이 주식회사 | 이차 전지 |
CN201117731Y (zh) | 2007-10-24 | 2008-09-17 | 中国电子科技集团公司第十八研究所 | 一种高倍率充放电二次电池结构 |
JP2009110751A (ja) * | 2007-10-29 | 2009-05-21 | Panasonic Corp | 二次電池 |
JP2009110885A (ja) | 2007-10-31 | 2009-05-21 | Sanyo Electric Co Ltd | 密閉電池及びその製造方法 |
US8147999B2 (en) | 2008-06-11 | 2012-04-03 | Eveready Battery Company, Inc. | Closure assembly with low vapor transmission for electrochemical cell |
EP2347461B1 (en) * | 2008-11-21 | 2016-04-06 | Johnson Controls Saft Advanced Power Solutions LLC | Current collector for an electrochemical cell |
KR101574082B1 (ko) * | 2008-12-12 | 2015-12-04 | 삼성에스디아이 주식회사 | 이차 전지 |
CN201466087U (zh) | 2009-06-11 | 2010-05-12 | 天津力神电池股份有限公司 | 一种锂离子电池负极柱铆接密封结构 |
DE102009060800A1 (de) * | 2009-06-18 | 2011-06-09 | Varta Microbattery Gmbh | Knopfzelle mit Wickelelektrode und Verfahren zu ihrer Herstellung |
KR101839158B1 (ko) * | 2009-10-13 | 2018-03-15 | 파워지닉스 시스템즈, 인코포레이티드 | 양성 캔을 포함하는 원통형 니켈-아연 전지 |
KR101093957B1 (ko) * | 2010-01-11 | 2011-12-15 | 삼성에스디아이 주식회사 | 이차전지 |
CN201781028U (zh) | 2010-07-30 | 2011-03-30 | 比亚迪股份有限公司 | 一种二次电池 |
KR101240717B1 (ko) | 2010-10-13 | 2013-03-11 | 삼성에스디아이 주식회사 | 이차 전지 |
JP5527176B2 (ja) | 2010-11-25 | 2014-06-18 | ソニー株式会社 | 非水電解質電池 |
JP2014053071A (ja) * | 2010-12-29 | 2014-03-20 | Sanyo Electric Co Ltd | 円筒形電池及びその製造方法 |
US20120171535A1 (en) * | 2010-12-31 | 2012-07-05 | Fuyuan Ma | Nickel-zinc battery and manufacturing method thereof |
US9231270B2 (en) * | 2011-02-16 | 2016-01-05 | Shin-Kobe Electric Machinery Co., Ltd. | Lithium-ion battery |
JP6070552B2 (ja) * | 2011-06-28 | 2017-02-01 | 日本ケミコン株式会社 | 蓄電デバイスの製造方法 |
JP5767407B2 (ja) * | 2011-07-13 | 2015-08-19 | エルジー・ケム・リミテッド | 円筒型二次電池 |
JP6175758B2 (ja) * | 2011-11-29 | 2017-08-09 | 株式会社Gsユアサ | 蓄電素子 |
CN202423400U (zh) | 2011-12-16 | 2012-09-05 | 日本碍子株式会社 | 阳极容器、钠硫电池及模块电池 |
US9324976B2 (en) * | 2012-02-21 | 2016-04-26 | Johnson Controls Technology Company | Electrochemical cell having a fixed cell element |
US9768422B2 (en) * | 2012-04-17 | 2017-09-19 | Kabushiki Kaisha Toyota Jidoshokki | Electricity storage device |
JP5868265B2 (ja) | 2012-05-25 | 2016-02-24 | 日立オートモティブシステムズ株式会社 | 単電池および組電池 |
CN105190952A (zh) * | 2013-04-01 | 2015-12-23 | 日立汽车系统株式会社 | 锂离子二次电池及其制造方法 |
US9805877B2 (en) * | 2013-04-10 | 2017-10-31 | Maxwell Technologies, Inc. | Collector plate for energy storage device and methods of manufacturing |
FR3011128B1 (fr) * | 2013-09-25 | 2015-10-30 | Commissariat Energie Atomique | Procede de realisation d'un faisceau electrochimique d'un accumulateur au lithium |
EP2876338B1 (en) * | 2013-11-21 | 2016-03-30 | Western Global Holdings Limited | Check valve with back pressure relief |
CN203553261U (zh) | 2013-11-27 | 2014-04-16 | 杭州山合江新能源技术有限公司 | 一种用于极盖和集流体间的平面式连接结构 |
JP6364757B2 (ja) | 2013-11-29 | 2018-08-01 | 日本ケミコン株式会社 | 蓄電デバイスおよびその製造方法 |
JP2015222685A (ja) | 2014-05-23 | 2015-12-10 | トヨタ自動車株式会社 | 二次電池用の電極 |
CN110429320B (zh) * | 2014-06-26 | 2022-09-23 | 松下知识产权经营株式会社 | 卷绕型电池 |
KR101679413B1 (ko) * | 2015-04-03 | 2016-11-25 | (주)오렌지파워 | 중공형 이차전지 |
KR101743136B1 (ko) * | 2014-07-16 | 2017-06-02 | 주식회사 엘지화학 | 내부 저항이 감소된 이차전지 및 그의 제조방법 |
KR20160043725A (ko) * | 2014-10-14 | 2016-04-22 | 주식회사 엘지화학 | 노치를 포함하는 원형 이차전지 |
JP6398655B2 (ja) * | 2014-11-26 | 2018-10-03 | トヨタ自動車株式会社 | 電池及びその製造方法 |
KR101926293B1 (ko) | 2015-03-26 | 2018-12-06 | 니뽄 도쿠슈 도교 가부시키가이샤 | 전기 화학 반응 단위 및 연료 전지 스택 |
JP6550863B2 (ja) | 2015-03-31 | 2019-07-31 | 株式会社Gsユアサ | 蓄電素子及び蓄電素子の製造方法 |
CN105449291B (zh) | 2015-04-16 | 2017-12-01 | 东莞市创明电池技术有限公司 | 一种圆柱型电池无极耳焊接的制备方法 |
CN106159350B (zh) * | 2015-04-27 | 2019-04-26 | 深圳金山电池有限公司 | 一种纽扣型锂离子二次电池及其制备方法 |
CN204596910U (zh) * | 2015-04-27 | 2015-08-26 | 深圳金山电池有限公司 | 一种纽扣型锂离子二次电池 |
JP2016225014A (ja) * | 2015-05-27 | 2016-12-28 | 日立オートモティブシステムズ株式会社 | 円筒形二次電池 |
US9793530B2 (en) | 2015-07-17 | 2017-10-17 | Atieva, Inc. | Battery assembly with linear bus bar configuration |
KR102397218B1 (ko) * | 2015-08-27 | 2022-05-12 | 삼성에스디아이 주식회사 | 배터리 팩 |
JP6861368B2 (ja) | 2015-08-31 | 2021-04-21 | パナソニックIpマネジメント株式会社 | 非水電解質二次電池 |
KR20170033543A (ko) * | 2015-09-17 | 2017-03-27 | 삼성에스디아이 주식회사 | 전극 조립체 및 이를 이용한 이차 전지 |
KR102470495B1 (ko) * | 2015-11-24 | 2022-11-24 | 삼성에스디아이 주식회사 | 이차전지 및 그 제조방법 |
JP2017120765A (ja) * | 2015-12-25 | 2017-07-06 | パナソニック株式会社 | 非水電解質二次電池 |
US10797275B2 (en) * | 2015-12-28 | 2020-10-06 | Gs Yuasa International Ltd. | Energy storage device and method for manufacturing the energy storage device |
US10193123B2 (en) * | 2016-03-01 | 2019-01-29 | Atieva, Inc. | Battery pack bus bar assembly with enlarged interconnect mounting platforms |
JP2018092776A (ja) * | 2016-12-01 | 2018-06-14 | 株式会社豊田自動織機 | 電池製造方法及び電池 |
CN206471426U (zh) * | 2016-12-30 | 2017-09-05 | 江西佳沃新能源有限公司 | 一种锂电池结构 |
JP6868400B2 (ja) * | 2017-01-17 | 2021-05-12 | Fdk株式会社 | 筒型電池の封口体、筒型電池 |
CN206461019U (zh) * | 2017-02-13 | 2017-09-01 | 山东巨维新能源股份有限公司 | 端面引流结构的铝壳圆柱电池 |
CN206461044U (zh) | 2017-02-13 | 2017-09-01 | 山东巨维新能源股份有限公司 | 端面引流结构的钢壳圆柱电池 |
JP2020071898A (ja) * | 2017-03-03 | 2020-05-07 | 株式会社Gsユアサ | 蓄電素子 |
CN206619636U (zh) | 2017-03-30 | 2017-11-07 | 陕西沃特玛新能源有限公司 | 一种电池 |
CN108428847B (zh) * | 2017-04-07 | 2023-08-29 | 宁德时代新能源科技股份有限公司 | 二次电池 |
US10431853B2 (en) * | 2017-05-02 | 2019-10-01 | Apple Inc. | Rechargeable battery features and components |
KR102316488B1 (ko) * | 2017-05-25 | 2021-10-22 | 주식회사 엘지화학 | 원통형 셀 연결 분리형 버스바와 이를 이용한 배터리 모듈 및 제조 방법 |
CN107482156B (zh) | 2017-08-29 | 2020-11-06 | 江苏英能新能源科技有限公司 | 一种大单体锂离子电池 |
US11600878B2 (en) | 2017-08-31 | 2023-03-07 | Panasonic Intellectual Property Management Co., Ltd. | Battery block and battery module provided with same |
KR102263435B1 (ko) | 2017-09-13 | 2021-06-11 | 주식회사 엘지에너지솔루션 | 비딩부가 생략된 원통형 전지셀 |
CN207217654U (zh) | 2017-09-14 | 2018-04-10 | 合肥国轩高科动力能源有限公司 | 一种绝缘连接片及使用此连接片的全极耳锂离子电池 |
CN207381468U (zh) | 2017-11-13 | 2018-05-18 | 济南圣泉集团股份有限公司 | 电极引出结构及储能器件 |
KR102288405B1 (ko) * | 2017-12-26 | 2021-08-09 | 주식회사 엘지에너지솔루션 | 공간 활용성과 안전성이 향상된 원통형 전지셀 조립체 및 이를 포함하는 배터리 모듈 |
US20190296283A1 (en) * | 2018-03-23 | 2019-09-26 | Sf Motors, Inc. | Integrated battery cell modules with plug-in battery cells for electric vehicles |
WO2019194182A1 (ja) | 2018-04-06 | 2019-10-10 | 三洋電機株式会社 | 円筒形電池 |
CN208400966U (zh) | 2018-05-29 | 2019-01-18 | 江西中汽瑞华新能源科技有限公司 | 一种大容量圆柱形二次锂电池 |
JP7128666B2 (ja) | 2018-06-11 | 2022-08-31 | Fdk株式会社 | 二次電池 |
KR102665556B1 (ko) * | 2018-07-13 | 2024-05-10 | 주식회사 엘지에너지솔루션 | 절연 가스켓 및 이를 포함하는 이차전지 |
TWI679311B (zh) | 2018-08-10 | 2019-12-11 | 南韓商Kcf科技有限公司 | 最小化隆起、皺紋或撕裂的銅箔、包含其的電極、包含其的二次電池、及製造其的方法 |
KR102622370B1 (ko) * | 2018-08-16 | 2024-01-09 | 주식회사 엘지에너지솔루션 | 이차전지 |
KR102480958B1 (ko) * | 2018-10-05 | 2022-12-23 | 주식회사 엘지에너지솔루션 | 이차전지 |
KR20200041625A (ko) * | 2018-10-12 | 2020-04-22 | 삼성에스디아이 주식회사 | 이차전지 |
CN113302786B (zh) | 2019-01-18 | 2023-05-09 | 三洋电机株式会社 | 密闭电池 |
CN209487560U (zh) | 2019-01-23 | 2019-10-11 | 深圳新恒业电池科技有限公司 | 电池 |
CN209912959U (zh) * | 2019-06-24 | 2020-01-07 | 福建卫东新能源股份有限公司 | 一种碱性蓄电池电极结构 |
KR102358157B1 (ko) | 2019-06-27 | 2022-02-04 | 코리아크레딧뷰로 (주) | 보이스 피싱 예방 방법 |
CN114175301A (zh) | 2019-07-30 | 2022-03-11 | 株式会社村田制作所 | 二次电池、电池包、电子设备、电动工具、电动航空器以及电动车辆 |
WO2021020237A1 (ja) | 2019-07-30 | 2021-02-04 | 株式会社村田製作所 | 二次電池、電池パック、電子機器、電動工具、電動式航空機及び電動車両 |
CN110459705A (zh) * | 2019-09-05 | 2019-11-15 | 重庆市紫建电子有限公司 | 一种提升径向空间利用率的纽扣电池 |
CN211208547U (zh) | 2019-12-06 | 2020-08-07 | 苏州市齐凡电子科技有限公司 | 一种公母连接片组件 |
CN111430588B (zh) * | 2020-03-03 | 2023-08-22 | 珠海冠宇电池股份有限公司 | 扣式电池的外壳组件、扣式电池以及电子产品 |
CN211879534U (zh) | 2020-04-30 | 2020-11-06 | 宁德时代新能源科技股份有限公司 | 电极组件、二次电池、电池组及装置 |
CN111952525B (zh) * | 2020-08-20 | 2023-06-20 | 华霆(合肥)动力技术有限公司 | 同侧集流装置、电池模组和电动车 |
CN112310574A (zh) | 2020-09-30 | 2021-02-02 | 宁德时代新能源科技股份有限公司 | 圆柱型电池单体、电池、用电装置、制造方法及制造系统 |
ES2973526T3 (es) | 2021-01-19 | 2024-06-20 | Lg Energy Solution Ltd | Terminal de electrodo, celda de batería cilíndrica, paquete de baterías y vehículo |
WO2023065186A1 (zh) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | 电池单体、电池、用电设备、电池单体的制备方法及装置 |
CN114446386B (zh) * | 2022-01-17 | 2024-02-02 | 中国人民解放军国防科技大学 | 一种血液ctDNA的检测方法 |
-
2022
- 2022-01-19 ES ES22152250T patent/ES2973526T3/es active Active
- 2022-01-19 US US18/273,010 patent/US20240128517A1/en active Pending
- 2022-01-19 CN CN202220147223.0U patent/CN217655927U/zh active Active
- 2022-01-19 CN CN202220148636.0U patent/CN217239587U/zh active Active
- 2022-01-19 KR KR1020220008151A patent/KR102437061B1/ko active IP Right Grant
- 2022-01-19 CN CN202220147398.1U patent/CN217655909U/zh active Active
- 2022-01-19 EP EP22152256.8A patent/EP4044334A3/en active Pending
- 2022-01-19 EP EP22742840.6A patent/EP4239784A2/en active Pending
- 2022-01-19 ES ES22152223T patent/ES2974169T3/es active Active
- 2022-01-19 CA CA3205236A patent/CA3205236A1/en active Pending
- 2022-01-19 WO PCT/KR2022/001006 patent/WO2022158858A2/ko active Application Filing
- 2022-01-19 KR KR1020220008150A patent/KR102448987B1/ko active IP Right Grant
- 2022-01-19 CA CA3204064A patent/CA3204064A1/en active Pending
- 2022-01-19 CA CA3203640A patent/CA3203640A1/en active Pending
- 2022-01-19 CN CN202220148424.2U patent/CN217239510U/zh active Active
- 2022-01-19 CN CN202220148548.0U patent/CN217239523U/zh active Active
- 2022-01-19 JP JP2023528505A patent/JP2023550338A/ja active Pending
- 2022-01-19 WO PCT/KR2022/001011 patent/WO2022158863A2/ko active Application Filing
- 2022-01-19 EP EP23215163.9A patent/EP4318699A3/en active Pending
- 2022-01-19 EP EP22152250.1A patent/EP4047703B1/en active Active
- 2022-01-19 EP EP22152262.6A patent/EP4044332A3/en active Pending
- 2022-01-19 CN CN202210061735.XA patent/CN114865242A/zh active Pending
- 2022-01-19 KR KR1020220008146A patent/KR102446797B1/ko active IP Right Grant
- 2022-01-19 JP JP2023528402A patent/JP2023549378A/ja active Pending
- 2022-01-19 CN CN202210062377.4A patent/CN114864857A/zh active Pending
- 2022-01-19 EP EP22742834.9A patent/EP4228082A2/en active Pending
- 2022-01-19 PL PL22152223.8T patent/PL4047725T3/pl unknown
- 2022-01-19 WO PCT/KR2022/001007 patent/WO2022158859A2/ko active Application Filing
- 2022-01-19 CN CN202220147074.8U patent/CN217239536U/zh active Active
- 2022-01-19 EP EP22742833.1A patent/EP4250469A2/en active Pending
- 2022-01-19 CA CA3203047A patent/CA3203047A1/en active Pending
- 2022-01-19 DE DE202022002774.5U patent/DE202022002774U1/de active Active
- 2022-01-19 CN CN202210061964.1A patent/CN114865054A/zh active Pending
- 2022-01-19 CA CA3202172A patent/CA3202172A1/en active Pending
- 2022-01-19 WO PCT/KR2022/001008 patent/WO2022158860A2/ko active Application Filing
- 2022-01-19 WO PCT/KR2022/001009 patent/WO2022158861A2/ko active Application Filing
- 2022-01-19 HU HUE22152223A patent/HUE065419T2/hu unknown
- 2022-01-19 CA CA3202317A patent/CA3202317A1/en active Pending
- 2022-01-19 DE DE202022002791.5U patent/DE202022002791U1/de active Active
- 2022-01-19 DE DE202022002775.3U patent/DE202022002775U1/de active Active
- 2022-01-19 JP JP2023537229A patent/JP2024500131A/ja active Pending
- 2022-01-19 DE DE202022002769.9U patent/DE202022002769U1/de active Active
- 2022-01-19 US US18/273,016 patent/US20240136674A1/en active Pending
- 2022-01-19 KR KR1020220008152A patent/KR102446351B1/ko active IP Right Grant
- 2022-01-19 CN CN202220148499.0U patent/CN217740748U/zh active Active
- 2022-01-19 KR KR1020220008145A patent/KR102438158B1/ko active IP Right Grant
- 2022-01-19 CN CN202210062750.6A patent/CN115000339A/zh active Pending
- 2022-01-19 EP EP22152237.8A patent/EP4044358B1/en active Active
- 2022-01-19 CA CA3204066A patent/CA3204066A1/en active Pending
- 2022-01-19 EP EP22152223.8A patent/EP4047725B1/en active Active
- 2022-01-19 DE DE202022002772.9U patent/DE202022002772U1/de active Active
- 2022-01-19 CN CN202210062748.9A patent/CN114865174A/zh active Pending
- 2022-01-19 WO PCT/KR2022/001005 patent/WO2022158857A2/ko active Application Filing
- 2022-01-19 WO PCT/KR2022/001012 patent/WO2022158864A2/ko active Application Filing
- 2022-01-19 EP EP23214922.9A patent/EP4312301A3/en active Pending
- 2022-01-19 DE DE202022002771.0U patent/DE202022002771U1/de active Active
- 2022-01-19 DE DE202022002770.2U patent/DE202022002770U1/de active Active
- 2022-01-19 US US18/030,442 patent/US20240021958A1/en active Pending
- 2022-01-19 CN CN202210062772.2A patent/CN114824413A/zh active Pending
- 2022-01-19 JP JP2023528158A patent/JP2023551123A/ja active Pending
- 2022-01-19 US US17/579,380 patent/US20220231345A1/en active Pending
- 2022-01-19 JP JP2023535625A patent/JP2024501458A/ja active Pending
- 2022-01-19 EP EP22152245.1A patent/EP4044336B1/en active Active
- 2022-01-19 CN CN202210062683.8A patent/CN114864956A/zh active Pending
- 2022-01-19 JP JP2023527697A patent/JP2023549148A/ja active Pending
- 2022-01-19 DE DE202022002773.7U patent/DE202022002773U1/de active Active
- 2022-01-19 EP EP23215214.0A patent/EP4311013A3/en active Pending
- 2022-01-19 EP EP22742838.0A patent/EP4243195A2/en active Pending
- 2022-01-19 EP EP23218081.0A patent/EP4325652A3/en active Pending
- 2022-01-19 KR KR1020220008149A patent/KR102448988B1/ko active IP Right Grant
- 2022-01-19 KR KR1020220008147A patent/KR102444337B1/ko active IP Right Grant
- 2022-01-19 JP JP2023528037A patent/JP2023549770A/ja active Pending
- 2022-01-19 JP JP2023528469A patent/JP2023551128A/ja active Pending
- 2022-01-19 CN CN202220147338.XU patent/CN218182246U/zh active Active
- 2022-01-19 CA CA3204067A patent/CA3204067A1/en active Pending
- 2022-01-19 EP EP22152207.1A patent/EP4047702B1/en active Active
- 2022-01-19 EP EP24168384.6A patent/EP4376211A1/en active Pending
- 2022-01-19 KR KR1020220008148A patent/KR102448822B1/ko active IP Right Grant
- 2022-01-19 WO PCT/KR2022/001010 patent/WO2022158862A2/ko active Application Filing
- 2022-01-19 CN CN202210061531.6A patent/CN114865053A/zh active Pending
- 2022-01-19 PL PL22152250.1T patent/PL4047703T3/pl unknown
- 2022-07-20 KR KR1020220089935A patent/KR20220107133A/ko active Application Filing
- 2022-07-20 KR KR1020220089932A patent/KR20220107131A/ko active Application Filing
- 2022-07-20 KR KR1020220089936A patent/KR20220108012A/ko active Application Filing
- 2022-07-20 KR KR1020220089934A patent/KR20220107132A/ko active Application Filing
- 2022-07-20 KR KR1020220089933A patent/KR20220108011A/ko active Application Filing
- 2022-08-02 KR KR1020220096293A patent/KR20220113654A/ko active Application Filing
- 2022-08-02 KR KR1020220096292A patent/KR20220113329A/ko active Application Filing
- 2022-08-22 KR KR1020220104894A patent/KR20220123354A/ko active Application Filing
-
2023
- 2023-04-06 US US18/131,751 patent/US20230246244A1/en active Pending
Patent Citations (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3761314A (en) | 1970-06-23 | 1973-09-25 | Accumulateurs Fixes | High discharge rate electric cells and batteries |
US6677082B2 (en) | 2000-06-22 | 2004-01-13 | The University Of Chicago | Lithium metal oxide electrodes for lithium cells and batteries |
US6680143B2 (en) | 2000-06-22 | 2004-01-20 | The University Of Chicago | Lithium metal oxide electrodes for lithium cells and batteries |
CN1444303A (zh) | 2002-03-08 | 2003-09-24 | 居永明 | 可反复充放电的锂离子动力电池及其制造方法 |
CN1309105C (zh) | 2003-12-24 | 2007-04-04 | 松下电器产业株式会社 | 卷式电化学元件用极板组和电池 |
KR20210030291A (ko) | 2013-12-17 | 2021-03-17 | 에스에프씨 주식회사 | 유기발광 화합물 및 이를 포함하는 유기전계발광소자 |
CN108496269A (zh) | 2016-11-02 | 2018-09-04 | 株式会社Lg化学 | 电极组件及用于制造该电极组件的方法 |
CN110476273A (zh) | 2017-04-14 | 2019-11-19 | 株式会社Lg化学 | 二次电池及制造该二次电池的方法 |
CN110870099A (zh) | 2017-07-18 | 2020-03-06 | 戴森技术有限公司 | 能量存储装置 |
KR20210046798A (ko) | 2018-10-15 | 2021-04-28 | 이.온 스베리지 에이비 | 한 쌍의 도관과 충전 트렌치를 포함하는 트렌치 충전 방법 |
KR20210137001A (ko) | 2019-03-12 | 2021-11-17 | 소니그룹주식회사 | 무선 통신 장치 및 방법 |
KR20210142196A (ko) | 2019-04-16 | 2021-11-24 | 허니웰 인터내셔날 인코포레이티드 | 수소와 요오드로부터 요오드화수소를 제조하기 위한 통합된 방법 및 촉매 |
KR20210007278A (ko) | 2019-07-10 | 2021-01-20 | 주식회사 이음파트너스 | 골목길 위급 상황 신고 장치 |
KR20210022891A (ko) | 2019-08-21 | 2021-03-04 | 한양대학교 산학협력단 | 차선 유지 제어 방법 및 그 장치 |
KR20210022894A (ko) | 2019-08-21 | 2021-03-04 | 에이엠티 주식회사 | 챔버 내 모듈 ic 그립핑장치 |
KR20210022881A (ko) | 2019-08-21 | 2021-03-04 | 한국항공우주산업 주식회사 | 회전익 항공기 자동착륙 시스템 |
KR20210022897A (ko) | 2019-08-21 | 2021-03-04 | 씨에스케이(주) | 스크러버용 버너 |
KR20210024424A (ko) | 2019-08-23 | 2021-03-05 | 아서스테크 컴퓨터 인코포레이션 | 무선 통신 시스템에서 사이드링크 무선 베어러에 대한 헤더 압축 구성 방법 및 장치 |
KR20210058183A (ko) | 2019-11-13 | 2021-05-24 | 건국대학교 산학협력단 | E형 간염바이러스에 대한 나노겔 백신용 조성물 |
KR20210077046A (ko) | 2019-12-16 | 2021-06-25 | 현대자동차주식회사 | 자율주행 차량의 운행 제어 시스템 및 방법 |
KR20210084326A (ko) | 2019-12-27 | 2021-07-07 | (주)글루가 | 네일 아트의 제조 방법 |
KR20210131215A (ko) | 2020-04-21 | 2021-11-02 | 유아이패스, 인크. | 로봇 프로세스 자동화를 위한 테스트 자동화 |
KR20210131225A (ko) | 2020-04-22 | 2021-11-02 | 베이징 바이두 넷컴 사이언스 앤 테크놀로지 코., 엘티디. | 영상 프레임 처리 방법, 장치, 전자 기기, 저장 매체 및 프로그램 |
KR20210131205A (ko) | 2020-04-23 | 2021-11-02 | 최재연 | 고성능 선루프 |
KR20210131208A (ko) | 2020-04-23 | 2021-11-02 | 안병로 | 실시간 체온정보 측정이 가능한 위생 마스크 |
KR20210131207A (ko) | 2020-04-23 | 2021-11-02 | 안병로 | 필터 교체형 위생 마스크 |
KR20210137856A (ko) | 2020-05-11 | 2021-11-18 | 삼성전자주식회사 | 디스플레이 및 카메라를 포함하는 전자 장치 |
KR20210153472A (ko) | 2020-06-10 | 2021-12-17 | 주식회사 이엠피이모션캡쳐 | 모션 및 얼굴 캡쳐를 이용한 실시간 방송플랫폼 제공 방법, 장치 및 그 시스템 |
KR20220001802A (ko) | 2020-06-30 | 2022-01-06 | 주식회사 쓰리스타 | 흡배기 체크밸브가 부착된 필터교체형 마스크 |
KR20210030300A (ko) | 2020-10-23 | 2021-03-17 | (주)쓰리엠탑 | 협업 멀티 로봇청소기 |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2022158862A2 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2022177378A1 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023090574A1 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023085893A1 (ko) | 분리막, 전극 조립체, 원통형 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023075523A1 (ko) | 원통형 배터리 셀, 이를 포함하는 배터리 및 자동차 및 집전판 | |
WO2024019549A1 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023090576A1 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2024019568A1 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023090577A1 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023096062A1 (ko) | 전극 단자의 리벳팅 구조 및 이를 포함하는 배터리 셀, 배터리 팩 및 자동차 | |
WO2024019552A1 (ko) | 원통형 배터리, 배터리 팩 및 자동차 | |
WO2023090573A1 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2022177360A1 (ko) | 이차 전지 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2024136620A1 (ko) | 전극 조립체, 원통형 배터리 셀 및 이를 포함하는 배터리 팩 | |
WO2023014018A1 (ko) | 전극 조립체, 이차전지, 이를 포함하는 배터리 팩 및 자동차 | |
WO2023068889A1 (ko) | 원통형 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
WO2023063808A1 (ko) | 전극 조립체, 원통형 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023068494A1 (ko) | 전극 조립체, 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023096389A1 (ko) | 전극 조립체 및 그 제조 방법 및 장치, 전극 조립체를 포함하는 원통형 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023068898A1 (ko) | 원통형 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
WO2023068885A1 (ko) | 전극 조립체, 원통형 배터리 및 이를 포함하는 배터리 팩 및 자동차 | |
WO2023068888A1 (ko) | 원통형 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
WO2023068891A1 (ko) | 원통형 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
WO2023068893A1 (ko) | 원통형 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
WO2023068886A1 (ko) | 원통형 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
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: 22742838 Country of ref document: EP Kind code of ref document: A2 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023528505 Country of ref document: JP |
|
ENP | Entry into the national phase |
Ref document number: 2022742838 Country of ref document: EP Effective date: 20230605 |
|
ENP | Entry into the national phase |
Ref document number: 3204064 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18273010 Country of ref document: US Ref document number: 202280010641.8 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |