WO2022025577A1 - 이차전지 - Google Patents
이차전지 Download PDFInfo
- Publication number
- WO2022025577A1 WO2022025577A1 PCT/KR2021/009674 KR2021009674W WO2022025577A1 WO 2022025577 A1 WO2022025577 A1 WO 2022025577A1 KR 2021009674 W KR2021009674 W KR 2021009674W WO 2022025577 A1 WO2022025577 A1 WO 2022025577A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- secondary battery
- extinguishing agent
- beading
- fire extinguishing
- present
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims description 49
- 238000007373 indentation Methods 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- 229920004449 Halon® Polymers 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 claims description 3
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 8
- 230000000903 blocking effect Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000002788 crimping Methods 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 description 1
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
Images
Classifications
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- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0028—Liquid extinguishing substances
- A62D1/005—Dispersions; Emulsions
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0092—Gaseous extinguishing substances, e.g. liquefied gases, carbon dioxide snow
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
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- 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
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- 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
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- 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
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- 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
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
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- 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
-
- 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
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- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
-
- 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 a secondary battery.
- Secondary batteries unlike primary batteries, can be recharged, and have been widely researched and developed in recent years due to their small size and large capacity. As technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source is rapidly increasing.
- the secondary battery is classified into a coin-type battery, a cylindrical battery, a prismatic battery, and a pouch-type battery according to the shape of the battery case.
- the secondary battery accommodates an electrode assembly and an electrolyte.
- an electrode assembly mounted inside a battery case is a charging/discharging power generating element having a stacked structure of an electrode and a separator.
- the electrode assembly is a sheet-type electrode assembly coated with an active material, with a separator interposed between the positive electrode and the negative electrode, and is a jelly-roll type, and a stack type in which a plurality of positive and negative electrodes are sequentially stacked with a separator interposed therebetween. , and stacked unit cells can be roughly classified into a stack/folding type in which a long-length separation film is wound.
- a cylindrical cell consists of a jellyroll-type electrode assembly and a can containing the electrode assembly.
- Patent Document Korean Patent Laid-Open No. 10-2014-0015647
- One aspect of the present invention is to provide a secondary battery that can be extinguished through a fire extinguishing agent when the battery is ignited.
- a secondary battery in the secondary battery, an electrode assembly in which an electrode and a separator are alternately stacked and wound, the electrode assembly is accommodated therein, an opening is formed at the top, and is bent inward a can having a beaded portion formed thereon to form an indentation groove on the outside, a cap assembly seated on the beading portion to cover the opening of the can, a fire extinguishing agent accommodated in the indentation groove to extinguish the ignition when the secondary battery ignites, and It may include a sealing part for sealing the indentation groove.
- the battery pack according to the embodiment of the present invention may include the secondary battery according to the embodiment of the present invention.
- the extinguishing agent in the beading part of the can and sealing the beading part in which the extinguishing agent is accommodated by the sealing part, it can be extinguished through the extinguishing agent when the battery is ignited.
- the extinguishing agent is composed of a compressed-type extinguishing agent, which is ejected when the secondary battery ignites, and can easily extinguish the surrounding space or prevent the fire from spreading.
- FIG. 1 is a cross-sectional view showing a secondary battery according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a state before the fire extinguishing agent is ejected from the secondary battery according to an embodiment of the present invention.
- FIG. 3 is a cross-sectional view illustrating a state in which a fire extinguishing agent is ejected from a secondary battery according to an embodiment of the present invention.
- FIG. 4 is a cross-sectional view showing a secondary battery according to another embodiment of the present invention.
- FIG. 5 is a perspective view illustrating a can in a secondary battery according to another embodiment of the present invention.
- FIG. 6 is a cross-sectional view showing a state before the fire extinguishing agent is ejected from the secondary battery according to another embodiment of the present invention.
- FIG. 7 is a cross-sectional view illustrating a state in which a fire extinguishing agent is ejected from a secondary battery according to another embodiment of the present invention.
- FIG. 1 is a cross-sectional view showing a secondary battery according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view showing a state before a fire extinguishing agent is ejected from the secondary battery according to an embodiment of the present invention
- FIG. 3 is a cross-sectional view of the present invention It is a cross-sectional view showing a state in which a fire extinguishing agent is ejected from a secondary battery according to an embodiment.
- the secondary battery 100 includes an electrode assembly 110 , a can 130 accommodating the electrode assembly 110 , and an opening 132 of the can 130 .
- ) includes a cap assembly 140 covering the , a fire extinguishing agent 150 that extinguishes fire when an ignition occurs, and a sealing part 160 sealing the indentation groove 134 .
- the electrode assembly 110 is a power generating element capable of charging and discharging, and forms a structure in which the electrode 113 and the separator 114 are alternately stacked.
- the electrode assembly 110 may be formed in a shape in which the electrode 113 and the separator 114 are alternately stacked and wound. In this case, the electrode assembly 110 may be provided in a shape wound in a circular or oval shape.
- the electrode 113 may include an anode 111 and a cathode 112 .
- the separator 114 separates the anode 111 and the cathode 112 to electrically insulate them.
- the positive electrode 111 , the separator 114 , and the negative electrode 112 may be alternately assembled and wound.
- the positive electrode 111 may include a positive electrode current collector and a positive electrode active material provided on one surface of the positive electrode current collector.
- the positive electrode 111 may include a positive electrode uncoated region that is an area on which the positive electrode active material is not stacked.
- the positive electrode current collector may be made of, for example, an aluminum foil.
- the cathode active material may be formed of lithium manganese oxide, lithium cobalt oxide, lithium nickel oxide, lithium iron phosphate, or a compound or mixture containing at least one of them.
- the negative electrode 112 may include a negative electrode current collector and a negative electrode active material provided on one surface of the negative electrode current collector.
- the negative electrode 112 may include a negative electrode uncoated region that is an area on which the negative electrode active material is not laminated.
- the negative electrode current collector may be formed of, for example, a copper foil made of a copper (Cu) material.
- the negative active material may be made of, for example, artificial graphite, lithium metal, lithium alloy, carbon, petroleum coke, activated carbon, graphite, a silicon compound, a tin compound, a titanium compound, or an alloy thereof.
- the negative active material may further include, for example, non-graphite-based SiO (silica, silica) or SiC (silicon carbide, silicon carbide).
- the separator 114 may be made of an insulating material to insulate between the anode 111 and the cathode 112 .
- the separator 114 is, for example, a multilayer film made of polyethylene, polypropylene, or a combination thereof having microporosity, or polyvinylidene fluoride, polyethylene oxide, polyacrylonitrile, or polyvinylidene fluoride hexadecimal. It may be a polymer film for a solid polymer electrolyte such as a fluoropropylene copolymer or for a gel polymer electrolyte.
- the can 130 accommodates the electrode assembly 110 therein, and an opening 132 may be formed at an upper end thereof.
- the can 130 may be formed in a cylindrical shape in which the receiving part 131 in which the electrode assembly 110 is accommodated is formed.
- the can 130 may include a metal material.
- the can 130 may include, for example, aluminum or copper.
- the beading part 133 may be formed to be bent inwardly so that the cap assembly 140 can be mounted on the can 130 to form an indentation groove 134 on the outside thereof.
- a crimping portion 135 may be formed on the top of the beading portion 133 of the can 130 to wrap and fix the edge of the cap assembly 140 .
- the crimping part 135 may include an outer periphery formed in the longitudinal direction of the can 130 and an upper end perpendicular to the longitudinal direction of the can 130 .
- the cap assembly 140 may be seated on the beading part 133 to cover the opening 132 of the can 130 .
- the cap assembly 140 includes a top cap 141 positioned above the secondary battery 100 , a safety vent 143 positioned under the top cap 141 , and a lower portion of the safety vent 143 .
- the positioned current blocking member 144 may include a gasket 145 surrounding the outer circumferential surface of the top cap 141 and the safety vent 143 .
- the gasket 145 may seal and insulate between the cap assembly 140 and the can 130 .
- the top cap 141 is formed with an outlet and may be located at the uppermost outermost portion of the secondary battery 100 .
- top cap 141 may form a terminal protruding from an upper end, and may be electrically connected to the electrode assembly 110 accommodated in the secondary battery 100 to form a positive terminal.
- the safety vent 143 may be disposed on the inside of the secondary battery 100 rather than the top cap 141 , so that when the internal pressure of the secondary battery 100 increases, the shape is reversed in the direction of the top cap 141 and ruptured.
- the current blocking member 144 is positioned under the safety vent 143 , and may include a central portion connected to the safety vent 143 and an outer shell portion not connected to the safety vent 143 .
- the upper end of the central portion is in contact with the lower end of the central portion 123 of the safety vent 143, and when the internal pressure increases, the central portion 123 of the safety vent 143 is moved in the direction of the top cap 141, As the contact between the safety vent 143 and the current blocking member 144 is released, the electrical connection may be released.
- the secondary battery 100 may include an electrode lead 120 attached to the electrode 113 and electrically connected to the electrode 113 .
- the electrode lead 120 may include a positive electrode lead 121 connected to the positive electrode 111 and a negative electrode lead connected to the negative electrode 112 .
- the positive lead 121 may be formed in a direction in which the cap assembly 140 is positioned in the upper direction and may be electrically connected to the current blocking member 144 , and the negative lead 121 may be formed in the lower direction of the can ( 130) may be electrically connected to the lower portion.
- the extinguishing agent 150 may be accommodated in the can 130 in the indentation groove 134 to extinguish the ignition when the secondary battery 100 ignites.
- the extinguishing agent 150 is made of a compression type containing compressed gas, and is ejected when the secondary battery 100 is ignited, and the surrounding space can be extinguished.
- the extinguishing agent 150 may be made of at least any one or more of Halon gas, nitrogen, and carbon dioxide.
- the sealing part 160 may seal the indentation groove 134 . Accordingly, the indentation groove 134 of the can 130 in which the extinguishing agent 150 is accommodated can be sealed through the sealing part 160 .
- the sealing part 160 may include a rubber material. Accordingly, it can be easy to inject the extinguishing agent into the indentation groove 134 . That is, for example, by passing the injection needle through the sealing part 160 , the extinguishing agent 150 is injected into the indentation groove 134 , and then the needle The passed portion may be sealed by applying heat or contracted and sealed by its own elastic force.
- the sealing part 160 may be made of adhesive rubber and may be attached to the can 130 to cover the indentation groove 134 . At this time, after being additionally adhered to the can 130 with an adhesive rubber, heat and pressure may be applied to fix it to the outer surface of the can 130 through thermal fusion.
- the extinguishing agent 150 is placed on the beading part 133 of the can 130 and the extinguishing agent 150 is accommodated by the sealing part 160 .
- the fire extinguishing agent 150 is composed of a compressed fire extinguishing agent 150 containing compressed gas and is ejected when the secondary battery 100 ignites, and it is possible to easily extinguish the surrounding space or prevent the fire from spreading.
- the extinguishing agent 150 containing compressed gas is heated to release the sealing of the sealing part 160 and ejected, or the extinguishing agent 150 is ejected to the part of the sealing part 160 that is dissolved by the ignition heat.
- FIG. 4 is a cross-sectional view showing a secondary battery according to another embodiment of the present invention
- FIG. 5 is a perspective view showing a can in a secondary battery according to another embodiment of the present invention
- FIG. 6 is a secondary battery according to another embodiment of the present invention. It is a cross-sectional view showing the state before the extinguishing agent is ejected from the battery
- FIG. 7 is a cross-sectional view showing the state in which the extinguishing agent is ejected from the secondary battery according to another embodiment of the present invention.
- the secondary battery 200 includes an electrode assembly 110 , a can 230 accommodating the electrode assembly 110 , and an opening 232 of the can 230 .
- ) includes a cap assembly 140 that covers, a fire extinguishing agent 150 that extinguishes fire when an ignition occurs, and a sealing part 160 that seals the indentation groove 234 .
- the secondary battery 200 according to another embodiment of the present invention has a difference in which notches 236 and 237 are further formed in the beading portion 233 of the can 230 compared to the secondary battery according to the embodiment of the present invention described above. have. Accordingly, in another embodiment of the present secondary battery 200, content overlapping with the embodiment of the secondary battery described above will be omitted or briefly described, and the differences will be mainly described.
- the can 230 may accommodate the electrode assembly 110 therein, and an opening 232 may be formed at an upper end thereof.
- the can 230 may be formed in a cylindrical shape in which the receiving part 231 in which the electrode assembly 110 is accommodated is formed.
- the can 230 may include a metal material.
- the can 230 may include, for example, aluminum or copper.
- the can 230 may be bent inwardly so that the cap assembly 140 can be mounted, so that the beading portion 233 forming the indentation groove 234 on the outside may be formed.
- Notches 236 and 237 may be formed in the beading portion 233 . Accordingly, when the secondary battery 200 is ignited, the notches 236 and 237 of the beading part 233 are ruptured and the extinguishing agent 150 accommodated in the indentation groove 234 is ejected, so it can be easy to extinguish the surrounding space. .
- the notches 236 and 237 may be formed on at least one of the outer surface 230b and the inner surface 230a of the beading portion 233 . In this case, the notches 236 and 237 may be formed in a triangular groove shape.
- the can 230 may be formed in a cylindrical shape, and the notches 236 and 237 may be formed along the outer circumferential surface or the inner circumferential surface of the beading portion 233 .
- the notches 236 and 237 may be discontinuously or continuously formed along the outer circumferential surface or the inner circumferential surface of the beading portion 233 .
- the notches 236 and 237 may be formed in one or more lines in the beading portion 233, for example.
- the notches 236 and 237 are melted by the flame generated when the secondary battery 200 is ignited, or ruptured by high internal pressure generation according to the ignition, or the fire extinguishing agent 150 containing compressed gas in the heat of ignition is heated. It may be ruptured by any one or more factors, such as being ruptured by the fire extinguishing agent 150 . Accordingly, the extinguishing agent 150 ejection passage between the receiving part 231 of the can 230 and the indentation groove 234 in which the extinguishing agent 150 is accommodated may be formed in the melted or ruptured notches 236 and 237. . Therefore, when the secondary battery 200 is ignited internally, the notches 236 and 237 are dissolved or ruptured, so that the extinguishing agent 150 is ejected into the secondary battery 200 and internal ignition can be extinguished.
- the notches 236 and 237 may be ruptured at the same or higher pressure as the rupture pressure of the safety vent 143, for example. Meanwhile, the notches 236 and 237 may be ruptured at a pressure lower than the rupture pressure of the safety vent 143 as another example.
- a crimping part 235 for enclosing and fixing the edge of the cap assembly 140 may be formed on the top of the beading part 233 of the can 230 .
- the extinguishing agent 150 is accommodated in the indentation groove 234 to extinguish the ignition when the secondary battery 200 ignites.
- the fire extinguishing agent 150 is composed of a compressed fire extinguishing agent 150 containing compressed gas, and is ejected when the secondary battery 200 is ignited to extinguish the surrounding space.
- the extinguishing agent 150 may be made of at least any one or more of Halon gas, nitrogen, and carbon dioxide.
- the sealing part 160 may seal the indentation groove 234 . Accordingly, the indentation groove 234 in which the extinguishing agent 150 is accommodated can be sealed through the sealing part 160 .
- the sealing part 160 may include a rubber material.
- sealing part 160 may be made of adhesive rubber and adhered to the can 230 to cover the indentation groove 234 .
- the extinguishing agent 150 containing compressed gas is heated to release the sealing of the sealing part 160 and ejected, or the extinguishing agent 150 is ejected to the part of the sealing part 160 that is dissolved by the ignition heat.
- the ignition can be extinguished, and when a fire occurs in the surrounding or adjacent batteries of the secondary battery 200, easily It can extinguish fires in the surrounding space.
- the battery pack may include a plurality of secondary batteries and a battery pack case accommodating the plurality of secondary batteries.
- the plurality of secondary batteries may be electrically connected in series or in parallel.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Dispersion Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
Claims (10)
- 이차전지에 있어서,전극 및 분리막이 교대로 적층되어 권취된 전극 조립체;상기 전극 조립체를 내부에 수용시키고, 상단에 개구가 형성되며, 내측으로 구부러지게 형성되어 외측에 만입홈을 형성하는 비딩부가 형성된 캔;상기 비딩부에 안착되어 상기 캔의 개구를 덮는 캡 조립체;상기 만입홈에 수용되어 상기 이차전지의 발화 발생 시 상기 발화를 진화시키는 소화약재; 및상기 만입홈을 실링하는 실링부를 포함하는 이차전지.
- 청구항 1에 있어서,상기 소화약재는 압축 가스를 포함하는 압축형 소화약재로 이루어져, 상기 이차전지의 발화 시 분출되며 주위 공간을 진화시키는 이차전지.
- 청구항 1에 있어서,상기 소화약재는 하론 가스, 질소, 및 이산화 탄소 중에서 적어도 어느 하나 이상으로 이루어지는 이차전지.
- 청구항 1에 있어서,상기 실링부는 고무 재질을 포함하는 이차전지.
- 청구항 1에 있어서,상기 실링부는 접착식 고무로 이루어져 상기 만입홈을 덮도록 상기 캔에 접착되는 이차전지.
- 청구항 1에 있어서,상기 캔의 비딩부에는 노치(Notch)가 형성된 이차전지.
- 청구항 6에 있어서,상기 노치는 상기 비딩부의 외측면 또는 내측면 중 적어도 어느 하나의 면에 형성된 이차전지.
- 청구항 6에 있어서,상기 캔은 원통형으로 형성되고,상기 노치는 상기 비딩부의 외주면 또는 내주면을 따라 형성된 이차전지.
- 청구항 6에 있어서,상기 노치는 삼각형 홈 형태로 형성되는 이차전지.
- 청구항 1 내지 청구항 9 중 어느 한 항에 기재된 이차전지를 포함하는 전지팩.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP21850288.8A EP4191768A1 (en) | 2020-07-28 | 2021-07-26 | Secondary battery |
US18/006,250 US20230275314A1 (en) | 2020-07-28 | 2021-07-26 | Secondary Battery |
CN202180048134.9A CN115769425A (zh) | 2020-07-28 | 2021-07-26 | 二次电池 |
JP2023502625A JP7448117B2 (ja) | 2020-07-28 | 2021-07-26 | 二次電池 |
Applications Claiming Priority (2)
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KR10-2020-0094042 | 2020-07-28 | ||
KR1020200094042A KR20220014223A (ko) | 2020-07-28 | 2020-07-28 | 이차전지 |
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WO2022025577A1 true WO2022025577A1 (ko) | 2022-02-03 |
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PCT/KR2021/009674 WO2022025577A1 (ko) | 2020-07-28 | 2021-07-26 | 이차전지 |
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US (1) | US20230275314A1 (ko) |
EP (1) | EP4191768A1 (ko) |
JP (1) | JP7448117B2 (ko) |
KR (1) | KR20220014223A (ko) |
CN (1) | CN115769425A (ko) |
WO (1) | WO2022025577A1 (ko) |
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KR20070071237A (ko) * | 2005-12-29 | 2007-07-04 | 삼성에스디아이 주식회사 | 원통형 리튬 이차전지 |
KR101335285B1 (ko) * | 2011-05-31 | 2013-12-02 | 주식회사 엘지화학 | 신규한 구조의 캡 어셈블리 및 이를 포함하고 있는 원통형 전지 |
JP2013544014A (ja) * | 2010-11-08 | 2013-12-09 | リ−テック・バッテリー・ゲーエムベーハー | 電気化学エネルギー貯蔵装置の内部、表面又は周囲における火災の消火又は防止方法及び装置 |
KR20140015647A (ko) | 2012-06-22 | 2014-02-07 | 주식회사 엘지화학 | 이차전지용 전극조립체, 그 제조방법 및 이를 이용한 이차전지 |
KR20160019251A (ko) * | 2014-08-11 | 2016-02-19 | 삼성에스디아이 주식회사 | 이차 전지 및 이를 포함하는 전지 모듈 |
KR102127307B1 (ko) * | 2016-10-31 | 2020-06-26 | 주식회사 엘지화학 | 이차전지 |
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JP6080201B2 (ja) | 2013-02-26 | 2017-02-15 | ホーチキ株式会社 | 消火装置及びこれを用いたエージング方法 |
CN110400894A (zh) | 2019-07-25 | 2019-11-01 | 清华大学 | 具有灭火功能的电池端盖 |
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2020
- 2020-07-28 KR KR1020200094042A patent/KR20220014223A/ko unknown
-
2021
- 2021-07-26 CN CN202180048134.9A patent/CN115769425A/zh active Pending
- 2021-07-26 EP EP21850288.8A patent/EP4191768A1/en active Pending
- 2021-07-26 WO PCT/KR2021/009674 patent/WO2022025577A1/ko active Application Filing
- 2021-07-26 US US18/006,250 patent/US20230275314A1/en active Pending
- 2021-07-26 JP JP2023502625A patent/JP7448117B2/ja active Active
Patent Citations (6)
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KR20070071237A (ko) * | 2005-12-29 | 2007-07-04 | 삼성에스디아이 주식회사 | 원통형 리튬 이차전지 |
JP2013544014A (ja) * | 2010-11-08 | 2013-12-09 | リ−テック・バッテリー・ゲーエムベーハー | 電気化学エネルギー貯蔵装置の内部、表面又は周囲における火災の消火又は防止方法及び装置 |
KR101335285B1 (ko) * | 2011-05-31 | 2013-12-02 | 주식회사 엘지화학 | 신규한 구조의 캡 어셈블리 및 이를 포함하고 있는 원통형 전지 |
KR20140015647A (ko) | 2012-06-22 | 2014-02-07 | 주식회사 엘지화학 | 이차전지용 전극조립체, 그 제조방법 및 이를 이용한 이차전지 |
KR20160019251A (ko) * | 2014-08-11 | 2016-02-19 | 삼성에스디아이 주식회사 | 이차 전지 및 이를 포함하는 전지 모듈 |
KR102127307B1 (ko) * | 2016-10-31 | 2020-06-26 | 주식회사 엘지화학 | 이차전지 |
Also Published As
Publication number | Publication date |
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CN115769425A (zh) | 2023-03-07 |
JP7448117B2 (ja) | 2024-03-12 |
KR20220014223A (ko) | 2022-02-04 |
US20230275314A1 (en) | 2023-08-31 |
EP4191768A1 (en) | 2023-06-07 |
JP2023534946A (ja) | 2023-08-15 |
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