WO2016204467A1 - 리튬이온 이차전지 - Google Patents
리튬이온 이차전지 Download PDFInfo
- Publication number
- WO2016204467A1 WO2016204467A1 PCT/KR2016/006251 KR2016006251W WO2016204467A1 WO 2016204467 A1 WO2016204467 A1 WO 2016204467A1 KR 2016006251 W KR2016006251 W KR 2016006251W WO 2016204467 A1 WO2016204467 A1 WO 2016204467A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulating member
- secondary battery
- electrode plate
- pair
- hole
- Prior art date
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 claims description 17
- 229910052744 lithium Inorganic materials 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 8
- -1 ethylene acrylic acid compound Chemical class 0.000 claims description 6
- 239000011247 coating layer Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 3
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 3
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- DERLTVRRWCJVCP-UHFFFAOYSA-N ethene;ethyl acetate Chemical compound C=C.CCOC(C)=O DERLTVRRWCJVCP-UHFFFAOYSA-N 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 229920006226 ethylene-acrylic acid Polymers 0.000 claims description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 3
- 229920000554 ionomer Polymers 0.000 claims description 3
- 239000002905 metal composite material Substances 0.000 claims description 3
- 239000007773 negative electrode material Substances 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 3
- 229920006289 polycarbonate film Polymers 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920005672 polyolefin resin Polymers 0.000 claims description 3
- 229920005990 polystyrene resin Polymers 0.000 claims description 3
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 3
- 239000011118 polyvinyl acetate Substances 0.000 claims description 3
- 239000007774 positive electrode material Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 2
- 238000003860 storage Methods 0.000 description 15
- 238000004080 punching Methods 0.000 description 9
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat 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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
-
- 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
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
- H01M4/382—Lithium
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light 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
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/136—Flexibility or foldability
-
- 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 lithium ion secondary battery, and more particularly, to a lithium ion secondary battery configured to maximize the performance of the battery by maximizing the storage space in the electronic device in which the secondary battery is stored or mounted.
- the lithium ion secondary battery is rapidly becoming a new energy source of portable electronic devices in recent years because of its relatively high energy density and charge / discharge life per unit weight, compared to conventional aqueous solutions such as nickel-cadmium and nickel-hydrogen. It replaces existing battery.
- aqueous solutions such as nickel-cadmium and nickel-hydrogen.
- the present applicant has developed a secondary battery using a pocketed electrode body in order to solve this problem, and Korean Patent Nos. 10-1168651 and 10-0337707 filed and registered by the present applicant have been developed. Disclosed is a lithium ion secondary battery and a manufacturing technology using the prepared electrode body.
- the lithium ion secondary battery using the pocketing electrode body has a typical shape such as a coin type, a flat type such as a button type or a button type, or a pouch type. Since it is common to manufacture, there is still a problem that a secondary battery having a typical shape cannot be used when the shape or shape of the electronic device in which the secondary battery is used is changed.
- the protrusion when the protrusion is formed on the inner surface of the case in which the secondary battery is accommodated, the space in which the secondary battery can be accommodated by the protrusion decreases, resulting in a case in which the storage space is not properly utilized.
- the secondary battery since the existing secondary battery does not efficiently utilize the remaining space of the storage space, the secondary battery has a space formed by a curved electronic device, an uneven portion space or a protrusion in terms of battery capacity or usage time. It does not reach a satisfactory level to apply to.
- the present applicant has a form and structure that can effectively utilize the remaining space of the storage space to increase the battery capacity or use time of the secondary battery and to reduce the restriction on the form of the electronic device in which the secondary battery is used.
- the present invention has been proposed.
- the present invention is to solve the above problems, it is possible to provide a lithium ion secondary battery without lowering the performance of the secondary battery by maximizing the battery storage space of the electronic device.
- the present invention can provide a lithium ion secondary battery that can minimize the form constraints of the electronic device in which the secondary battery is used.
- the present invention provides a secondary battery including an electrode assembly in which a plurality of pocketing positive electrode bodies and a negative electrode body are alternately stacked, wherein the electrode assembly is provided with a recessed recessed space, and the protrusion of the electronic device is inserted into the space. Can be.
- the pocketing positive electrode may include a positive electrode plate having a coating layer of a lithium or lithium metal composite oxide as a positive electrode active material and a plain protrusion, and having a first through hole; A pair of separators covering both surfaces of the positive electrode plate while exposing only the plain protrusion; And a film part positioned between the pair of separators in the whole or a portion of the circumference of the positive electrode plate and bonded to the pair of separators.
- the film part may further include: a first insulating member positioned between the pair of separators in the entire outer circumference of the anode plate or a part of the outer circumference thereof and adhered to the pair of separators; And a second insulating member disposed between the pair of separators in the entirety of the inner circumference of the anode plate forming the first through hole or a part of the inner circumference thereof and adhered to the pair of separators.
- the film unit may include a connection member connecting the first insulating member and the second insulating member to each other.
- both ends of the connection member may be connected to at least one portion of a circumferential direction of the inner surface of the first insulating member and a circumferential direction of the outer surface of the second insulating member.
- the positive electrode plate may be formed with a cutout that can accommodate the connection member.
- the negative electrode body includes a negative electrode plate having a carbonaceous negative electrode active material coating layer capable of occluding and releasing lithium and a plain protrusion, and a second through hole communicated with the first through hole in the negative electrode plate of the negative electrode body. This can be formed.
- the second through hole may be selectively formed or not formed in the negative electrode plate of the negative electrode body disposed at the lowermost end of the electrode assembly.
- a portion of the pair of separators corresponding to the first through hole of the positive electrode plate may be heated and pressurized to adhere to the inner surface of the second insulating member and to adhere to the surface of the negative electrode plate of the negative electrode disposed at the bottom of the electrode assembly. Can be.
- the space formed in the electrode assembly may be formed in the shape of a hole by an inner side surface of the second insulating member accommodated in the first through hole and an inner side surface of the negative electrode plate forming the second through hole. It may be formed in the shape of a groove by the inner surface of the second insulating member accommodated in the through hole, the inner surface of the negative electrode plate forming the second through hole and the upper surface of the negative electrode plate disposed at the lowermost end of the electrode assembly.
- an adhesive material may be applied to both surfaces of the first insulating member, the second insulating member, and the connection member facing the pair of separators.
- a positioning unit on which the first insulating member is disposed may be displayed on any one of the pair of separators.
- the first insulating member may be provided with an accommodating portion capable of accommodating the plain protrusion of the positive plate.
- an adhesive material may be applied to both surfaces of the first insulating member, the second insulating member, and the connection member facing the pair of separators.
- first insulating member, the second insulating member and the connecting member may include a polyolefin resin film, a polyester resin film, a polystyrene resin film, a polyimide film, a fluorocarbon resin film, an ABS film, and a polyacrylic resin. It may include any one selected from the group consisting of a film, acetal-based film, polycarbonate film.
- first insulating member, the second insulating member and the connecting member are ethylene vinyl acetate, ethylene ethyl acetate, ethylene acrylic acid compound, ionomer compound, polyethylene, polyvinyl acetate, polyvinyl butyral It may include any one of the adhesive components selected from the group of configured hot melt adhesive materials.
- a plurality of electrode assemblies having different sizes are stacked in multiple stages, and thus the height of the secondary battery storage space of an electronic device having a curved space having a curved shape, or the height according to the arrangement of electronic components Since it can be accommodated in the secondary battery receiving space of the electronic device having the uneven portion or the protrusion, it is possible to take full advantage of the secondary battery storage space in the electronic device.
- the secondary battery according to an embodiment of the present invention can maximize the remaining space of the secondary battery storage space of the electronic device, thereby increasing the battery capacity and battery usage time.
- the secondary battery according to an embodiment of the present invention because the secondary battery storage space of the electronic device is not limited to the existing square or cylindrical, it is possible to design the electronic device in a variety of designs.
- FIG. 1 is a perspective view of a lithium ion secondary battery according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the lithium ion secondary battery illustrated in FIG. 1 viewed in the direction of arrow A-A '.
- Figure 3 is an exploded perspective view of the pocketing anode according to an embodiment of the present invention.
- FIG. 4 is a plan view and a cross-sectional view of a pocketing anode according to an embodiment of the present invention.
- FIG 5 is a plan view of a negative electrode body according to an embodiment of the present invention.
- FIG. 6 is a perspective view illustrating a state in which a plurality of positive electrode plates and a plurality of film portions are disposed between a pair of separators according to an embodiment of the present invention.
- FIG. 7 is a view illustrating a state in which a lithium ion secondary battery according to an embodiment of the present invention is accommodated in a battery accommodation space of an electronic device.
- FIG. 8 is a perspective view of a pouch for sealing the electrode assembly of the present invention.
- FIG. 9 is a perspective view showing a state in which the electrode assembly is sealed by the pouch of FIG.
- FIG. 10 is a cross-sectional view of the pouch secondary battery illustrated in FIG. 9 viewed in the direction of arrow A-A '.
- the lithium ion secondary battery 100 includes an electrode assembly in which a plurality of pocketing positive electrode bodies 200 and negative electrode bodies 300 are alternately stacked. 400).
- the electrode assembly 400 is provided with a space portion S1 into which the protrusions 11 (see FIG. 7) protruding toward the battery storage space of the electronic device are inserted and accommodated. It may be formed by the first through hole 212 and the second through hole 312 formed in the two pocketing anode body 200 and the cathode body 300, respectively.
- the space S1 may be formed in the shape of a groove on the electrode assembly 400, as shown in FIG. 2, or may be formed in the shape of a groove, as shown in FIG. 10.
- the cathode body 300 disposed at the lowermost end of the electrode assembly 400 is disposed. Except for the remaining plurality of pocketing anode body 200 and the cathode body 300 may be formed by the first through hole 212 and the second through hole 312, respectively.
- a plurality of pocketing anodes constituting the electrode assembly 400 ( It may be formed by the first through hole 212 and the second through hole 312 formed in both the 200 and the cathode body 300, respectively.
- the pocketing positive electrode 200 has a coating layer of a lithium or lithium metal composite oxide, which is a positive electrode active material, and a plain protrusion 211, and a battery storage space of an electronic device.
- a pair of bipolar plates 210 having a first through hole 212 formed therein through which the protrusions 11 protruding toward the surface can be inserted, and covering both surfaces of the bipolar plate 210 while only the plain protrusions 211 are exposed. It may include a film portion 230 which is disposed between the pair of separator 220 in the separator 220 and the whole or part of the periphery of the positive electrode plate 210 and bonded to the pair of separator 220. .
- the negative electrode body 300 has a carbonaceous negative electrode active material capable of occluding and releasing lithium and a non-stick protrusion 311, and includes a first through hole formed in the positive electrode plate 210. And a negative electrode plate 310 in which a second through hole 312 communicates with corresponding to 212.
- the negative electrode plate 310 of the negative electrode body 300 is larger than the size of the positive electrode plate 210 to stably occlude lithium ions emitted from the positive electrode plate 210 of the pocketing positive electrode 200. .
- the shape of the space S1 may be formed in the shape of a groove or a hole corresponding to the protrusion length, the protrusion direction and the number of protrusions 11 (see FIG. 7) protruding toward the battery storage space of the electronic device. Accordingly, the second through hole 312 may or may not be selectively formed in the negative electrode plate 310 of the negative electrode body 300 disposed at the lowermost end of the electrode assembly 400.
- the film portion 230 of the pocketing anode body 200 may include the pair of separators in the entire outer portion or the portion of the outer circumference of the positive electrode plate 210. All of the inner circumference of the first insulating member 231 and the inner circumference of the bipolar plate 210 formed by partitioning the first through hole 212 and the first insulating member 231 which is disposed between the 220 and bonded to the pair of separators 220. A portion of an inner circumference may include a second insulating member 232 positioned between the pair of separators 220 and bonded to the pair of separators 220.
- the first insulating member 231 and the second insulating member 232 may cooperate with each other to form a punching space S2 in which the positive electrode plate 210 may be accommodated.
- the punching space S2 has a shape or size in which the positive electrode plate 210 can be accommodated.
- the punching space S2 is formed in a shape of a rectangular frame corresponding to the shape of the positive electrode plate 210, but is not limited thereto. It may be manufactured in a frame shape of circular and polygonal shapes.
- the positive electrode plate 210 is accommodated in the punching space S2 while being spaced apart from the first insulating member 231 and the second insulating member 232 to form the punching space S2. Can be.
- an outer side surface of the positive electrode plate 210 is spaced apart from an inner side surface of the first insulating member 231, and an inner side surface of the positive electrode plate 210 forming the first through hole 212 may be formed of the first side. 2 is spaced apart from the outer surface of the insulating member 232.
- the film unit 230 may further include a connection member 233 connecting the first insulating member 231 and the second insulating member 232 to each other.
- Both ends of the connection member 233 may be connected to at least one portion of an inner circumferential direction of the first insulating member 231 and an outer circumferential direction of the second insulating member 232.
- the connecting member 233 is formed in the process of the second insulating member 232 is received in the first through hole 212 of the positive electrode plate 210 and disposed along the inner circumferential direction of the positive electrode plate 210.
- the insulating member 232 may be placed in a preset position.
- connection member 233 may be disposed on the separator 220 disposed below the anode plate 210 of the pair of separators 220.
- the second insulating member 232 may be disposed at a position that can be accommodated in the first through hole 212 of the bipolar plate 210.
- the positive electrode plate 210 is preferably formed with a cutout portion 213 that can accommodate the connection member 233 of the film portion 230.
- the cutout 213 may be formed on the separator 220 of any one of the pair of separators 220 to which the positive electrode plate 210 is bonded.
- the positive plate 210 is prevented from being accommodated in the punching space S2 in a state of being stacked on the connection member 233 of the film part 230.
- the positive electrode plate 210 is stacked on the connection member 233, and thus the pair of the positive electrode plate 210 and the pair are formed.
- a gap is formed between the separators 220, and thus, when the plurality of pocketing anodes 200 and the cathode bodies 300 are alternately stacked, the pocketing anodes 200 and the cathode bodies 300 are alternately stacked.
- a gap may be formed between the battery cells to degrade performance.
- connection member 233 is illustrated in the drawing as connecting the center of the inner surface of the first insulating member 231 and the center of the outer surface of the second insulating member 232, but is not limited thereto. That is, the position or number of the connection member 233 is formed if the inner surface of the first insulating member 231 and the outer surface of the second insulating member 232 can be connected to each other, the first insulating member 231. At least one portion of the inner circumferential direction of the inner side) and the outer circumferential direction of the second insulating member 232 may be selected and formed.
- an adhesive material may be applied to the first insulating member 231, the second insulating member 232, and the connection member 233 of the film part 230. That is, an adhesive material may be applied to both surfaces of the first insulating member 231, the second insulating member 232, and the connecting member 233 facing the pair of separators 220.
- first insulating member 231, the second insulating member 232, and the connecting member 233 of the film part 230 may include a polyolefin resin film, a polyester resin film, a polystyrene resin film, and a poly It may include any one selected from the group consisting of an imide film, a polyamide film, a fluorocarbon resin film, an ABS film, a poly acrylic film, an acetal film, a polycarbonate film.
- the first insulating member 231, the second insulating member 232, and the connecting member 233 may include ethylene vinyl acetate, ethylene ethyl acetate, ethylene acrylic acid compound, ionomer compound, polyethylene, It is preferred to include any one of the adhesive components selected from the group of hot melt adhesive materials consisting of polyvinyl acetate, polyvinyl butyral.
- an accommodating part 231a may be formed in the first insulating member 231 to accommodate the plain protrusion 211 of the positive electrode plate 210.
- the accommodating part 231a may have a flat projection 211 of the positive electrode plate 210 when the positive electrode plate 210 is accommodated in the punching space S2 of the film unit 230. It is prevented from being stacked on the upper side of the first insulating member 231 adhered to any one of the separators 220.
- the accommodating part 231a is not formed in the first insulating member 231, the plain protrusion 211 of the positive electrode plate 210 is stacked on the first insulating member 231. Therefore, a gap is inevitably formed between the positive electrode plate 210 and the pair of separators 220. Accordingly, when a plurality of the pocketing positive electrode 200 and the negative electrode 300 are alternately stacked, a gap is formed between the pocketing positive electrode 200 and the negative electrode 300, thereby degrading battery performance. Can be.
- the accommodating part 231a may be formed in a portion of the circumferential direction of the first insulating member 231, and the plain protrusion of the mall bipolar plate 210 when the positive electrode plate 210 is accommodated in the punching space S2. It may be formed at a position corresponding to (211).
- a positioning unit for guiding a position where the first insulating member 231 of the film unit 230 is placed in one of the pair of separators 220. 221 may be displayed.
- the positioning unit 221 allows the operator to easily and accurately perform the task of adhering the plurality of film units 230 to a predetermined position with respect to the strip-shaped separator 220.
- the space S1 formed in the electrode assembly 400 includes a negative electrode plate forming the inner surface of the second insulating member 232 and the second through hole 312 accommodated in the first through hole 212.
- the inner surface of the insulating member 232 and the inner surface of the negative electrode plate 312 forming the second through hole 212 may be formed in the form of a hole.
- the lithium ion secondary battery 100 according to the embodiment of the present invention configured as described above, can be sealed by a variety of packaging (packing) material, can or pouch type battery according to what packaging material to use Can be used as
- the packaging material for sealing the lithium ion secondary battery 100 is a pouch of a flexible material, as shown in FIG. 8, a pair of electrode assemblies 400 may be accommodated in the pouch P. It is preferable to form an insertion portion 31 which protrudes in the accommodation groove 30 and the pair of accommodation grooves 31 and is inserted into the space S1 formed in the electrode assembly 400.
- the pair of accommodating grooves 30 are formed in a shape corresponding to the outer shape of the electrode assembly 400, and the positions corresponding to each other when the pouch P is folded in half with respect to the fold line L It is preferably formed in.
- the worker folds the pouch (P) fold line (L) This is because the pair of receiving grooves 30 may be combined with each other to seal the electrode assembly 400 by folding in half.
- the insertion part 31 may be formed in each of the pair of receiving grooves 30, or may be formed only in one of the receiving grooves 30 of the pair of receiving grooves 30. . That is, the insertion part 31 is formed only in any one receiving groove 30 of the pair of receiving grooves 30 when the space S1 formed in the electrode assembly 400 is formed in the shape of a groove. On the contrary, when the space S1 is formed in the shape of a hole, as shown in FIG. 8, the space of the electrode assembly 400 is formed in each of the pair of receiving grooves 30. The upper and lower portions S1 may be respectively inserted.
- the pouch P having the configuration as described above is cut into a shape corresponding to the outer shape of the electrode assembly 400 in a sealed state of the electrode assembly 400.
- the cutting site may be sealed.
- the uncut portion may also be cut and then the cut portion may be sealed.
- FIG. 10 illustrates that the space S1 formed in the electrode assembly 400 has a shape of a hole penetrating through the electrode assembly 400.
- Lithium ion secondary battery 100 according to an embodiment of the present invention having the above configuration can maximize the remaining space of the secondary battery storage space of the electronic device, it is possible to increase the battery capacity and battery usage time.
- the lithium ion secondary battery 100 since the lithium ion secondary battery 100 according to the embodiment of the present invention does not limit the secondary battery accommodating space of the electronic device to the existing square or cylinder, the electronic device can be designed in various designs.
- the present invention can be applied to a variety of electronic devices such as smartphones, cameras, notebooks, and can be sold to consumers or sold separately along with the electronic devices.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Inorganic Chemistry (AREA)
- Cell Separators (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims (16)
- 복수개의 포켓팅 양극체와 음극체가 교대로 적층된 전극 조립체를 포함하는 이차전지에 있어서,상기 전극 조립체에는 음각으로 함몰된 공간부가 형성되며,상기 공간부에는 전자기기의 돌출부가 삽입되는 것을 특징으로 하는 리튬이온 이차전지.
- 제 1 항에 있어서,상기 포켓팅 양극체는,양극 활물질인 리튬 또는 리튬 금속 복합 산화물의 코팅층 및 무지 돌출부를 가지며, 제1관통구멍이 형성된 양극판;상기 무지 돌출부만을 노출시키면서 상기 양극판의 양면을 피복하는 한 쌍의 분리막; 및상기 양극판 둘레 전체 또는 둘레의 일부에서 상기 한 쌍의 분리막 사이에 위치하여 상기 한 쌍의 분리막에 접착되는 필름부;를 포함하는 것을 특징으로 하는 리튬이온 이차전지.
- 제 2 항에 있어서,상기 필름부는,상기 양극판의 외측 둘레의 전체 또는 외측 둘레의 일부에서 상기 한 쌍의 분리막 사이에 위치하여 상기 한 쌍의 분리막에 접착되는 제1절연성 부재; 및상기 제1관통구멍을 형성하는 상기 양극판의 내측 둘레의 전체 또는 내측 둘레의 일부에서 상기 한 쌍의 분리막 사이에 위치하여 상기 한 쌍의 분리막에 접착되는 제2절연성 부재;를 포함하는 것을 특징으로 하는 리튬이온 이차전지.
- 제 3 항에 있어서,상기 필름부는,상기 제1절연성 부재와 상기 제2절연성 부재를 서로 연결하는 연결부재를 포함하는 것을 특징으로 하는 리튬이온 이차전지.
- 제 4 항에 있어서,상기 연결부재의 양단은 상기 제1절연성 부재의 내측면 둘레방향과 상기 제2절연성 부재의 외측면 둘레방향 중 적어도 어느 한 부위에 각각 연결되는 것을 특징으로 하는 리튬이온 이차전지.
- 제 4 항에 있어서,상기 양극판에는 상기 연결부재가 수용될 수 있는 절개부가 형성되는 것을 특징으로 하는 리튬이온 이차전지.
- 제 1 항에 있어서,상기 음극체는,리튬을 흡장, 방출할 수 있는 탄소질 음극 활물질 코팅층 및 무지 돌출부를 가지는 음극판을 포함하고,상기 음극체의 음극판에는 상기 제1관통구멍과 대응하여 연통되는 제2관통구멍이 형성되는 것을 특징으로 하는 리튬이온 이차전지.
- 제 7 항에 있어서,상기 전극 조립체의 최하단에 배치된 음극체의 음극판에는 상기 제2관통구멍이 선택적으로 형성되거나 형성되지 않는 것을 특징으로 하는 리튬이온 이차전지.
- 제 8 항에 있어서,상기 한 쌍의 분리막 중에서 상기 양극판의 제1관통구멍과 대응되는 부위는 상기 제2절연성 부재의 내측면과 접착되고 상기 전극 조립체의 최하단에 배치되는 음극체의 음극판 표면에 접착되도록 가열 가압되는 것을 특징으로 하는 리튬이온 이차전지.
- 제 9 항에 있어서,상기 전극 조립체에 형성된 공간부는,상기 제1 관통구멍에 수용된 상기 제2절연성 부재의 내측면과 상기 제2관통구멍을 형성하는 음극판의 내측면에 의해 구멍의 형상으로 형성되거나, 상기 제1 관통구멍에 수용된 상기 제2절연성 부재의 내측면과 상기 제2관통구멍을 형성하는 음극판의 내측면 및 상기 전극 조립체의 최하단에 배치되는 음극판의 상면에 의해 홈의 형상으로 형성되는 것을 특징으로 하는 리튬이온 이차전지.
- 제 4 항에 있어서,상기 한 쌍의 분리막과 마주하는 상기 제1절연성 부재와 상기 제2절연성 부재 및 연결부재의 양면에는 각각 접착물질이 도포되는 것을 특징으로 하는 이차전지.
- 제 3 항에 있어서,상기 한 쌍의 분리막 중 어느 하나의 분리막에는 상기 제1절연성 부재가 놓여지는 위치결정부가 표시되는 것을 특징으로 하는 이차전지.
- 제 3 항에 있어서,상기 제1절연성 부재에는 상기 양극판의 무지 돌출부가 수용될 수 있는 수용부가 형성되는 것을 특징으로 하는 리튬이온 이차전지.
- 제 4 항에 있어서,상기 한 쌍의 분리막과 마주하는 상기 제1절연성 부재와 상기 제2절연성 부재 및 상기 연결부재의 양면에는 각각 접착물질이 도포되는 것을 특징으로 하는 리튬이온 이차전지.
- 제 4 항에 있어서,상기 제1절연성 부재와 상기 제2절연성 부재 및 상기 연결부재는 폴리 올레핀 수지 필름, 폴리 에스테르 수지 필름, 폴리 스티렌 수지 필름, 폴리 이미드 필름, 플로로 카본 수지 필름, 에비에스 필름, 폴리 아크릴계 필름, 아세탈 계 필름, 폴리 카보네이트 필름으로 구성된 군으로부터 선택된 어느 하나를 포함하는 리튬이온 이차전지.
- 제 14 항에 있어서,상기 제1절연성 부재와 상기 제2절연성 부재 및 상기 연결부재는 에틸렌비닐아세테이트, 에틸렌 에틸 아세테이트, 에틸렌 아크릴릭 애시드계 화화합물, 아이오노머계 화합물, 폴리 에틸렌, 폴리 비닐 아세테이트, 폴리 비닐 뷰티랄로 구성된 고온 용융형 접착물질군으로부터 선택된 어느 하나의 접착 성분을 포함하는 리튬이온 이차전지.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017565947A JP6643736B2 (ja) | 2015-06-18 | 2016-06-13 | リチウムイオン二次電池 |
CN201680035516.7A CN107750407B (zh) | 2015-06-18 | 2016-06-13 | 锂离子二次电池 |
EP16811880.0A EP3312928B1 (en) | 2015-06-18 | 2016-06-13 | Lithium ion secondary battery |
US15/736,692 US10559790B2 (en) | 2015-06-18 | 2016-06-13 | Lithium ion secondary battery configured to make best use of an accommodating space in an electronic apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2015-0086922 | 2015-06-18 | ||
KR1020150086922A KR101681758B1 (ko) | 2015-06-18 | 2015-06-18 | 리튬이온 이차전지 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016204467A1 true WO2016204467A1 (ko) | 2016-12-22 |
Family
ID=57546030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2016/006251 WO2016204467A1 (ko) | 2015-06-18 | 2016-06-13 | 리튬이온 이차전지 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10559790B2 (ko) |
EP (1) | EP3312928B1 (ko) |
JP (1) | JP6643736B2 (ko) |
KR (1) | KR101681758B1 (ko) |
CN (1) | CN107750407B (ko) |
WO (1) | WO2016204467A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109792021A (zh) * | 2017-03-10 | 2019-05-21 | 株式会社Lg化学 | 锂二次电池用隔膜以及包含其的锂二次电池 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3591729A1 (en) * | 2018-07-03 | 2020-01-08 | Renata AG | A multilayer packaging structure for a thin film battery and a method for manufacturing of such a structure |
KR102552243B1 (ko) * | 2018-09-13 | 2023-07-07 | 주식회사 엘지에너지솔루션 | 이차전지 및 그 이차전지를 포함하는 전자기기 |
CN113348589B (zh) * | 2019-10-29 | 2023-05-23 | 株式会社Lg新能源 | 二次电池及电池模块 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20110138718A (ko) * | 2010-06-21 | 2011-12-28 | 김영덕 | 포케팅 전극체, 이를 포함하는 전극 조립체 및 이를 이용한 리튬 이차전지 |
KR20130105272A (ko) * | 2012-03-14 | 2013-09-25 | 주식회사 엘지화학 | 관통 구멍이 형성된 전지셀 및 이를 포함하는 전지팩 |
KR20140034974A (ko) * | 2012-09-11 | 2014-03-21 | 주식회사 루트제이드 | 래핑 전극체 및 그 제조방법 |
KR101387617B1 (ko) * | 2012-09-11 | 2014-04-24 | 주식회사 루트제이드 | 이차전지 전극조립체용 분리막 및 이를 포함하는 이차전지 |
KR20150034600A (ko) * | 2013-09-26 | 2015-04-03 | 주식회사 엘지화학 | 전극조립체 및 이차전지의 제조방법 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100337707B1 (ko) | 2000-09-25 | 2002-05-22 | 정근창 | 포케팅 전극체 및 그 제조방법과 이를 이용한 리튬이온이차전지 |
KR101168651B1 (ko) * | 2010-06-21 | 2012-07-26 | 주식회사 루트제이드 | 포케팅 전극체, 이를 포함하는 전극 조립체 및 이를 이용한 리튬 이차전지 |
JP2012209072A (ja) * | 2011-03-29 | 2012-10-25 | Nec Corp | 電極積層型電池の電極積層体、および該電極積層体の製造方法 |
US20140113184A1 (en) * | 2012-10-18 | 2014-04-24 | Apple Inc. | Three-dimensional non-rectangular battery cell structures |
KR101573683B1 (ko) | 2013-02-13 | 2015-12-03 | 주식회사 엘지화학 | 비정형 구조의 전지셀 |
CN104604015B (zh) * | 2013-06-28 | 2017-08-25 | 株式会社Lg 化学 | 包括隔膜切割工序的电极组件的制造方法 |
-
2015
- 2015-06-18 KR KR1020150086922A patent/KR101681758B1/ko active IP Right Grant
-
2016
- 2016-06-13 CN CN201680035516.7A patent/CN107750407B/zh active Active
- 2016-06-13 EP EP16811880.0A patent/EP3312928B1/en active Active
- 2016-06-13 WO PCT/KR2016/006251 patent/WO2016204467A1/ko active Application Filing
- 2016-06-13 JP JP2017565947A patent/JP6643736B2/ja active Active
- 2016-06-13 US US15/736,692 patent/US10559790B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20110138718A (ko) * | 2010-06-21 | 2011-12-28 | 김영덕 | 포케팅 전극체, 이를 포함하는 전극 조립체 및 이를 이용한 리튬 이차전지 |
KR20130105272A (ko) * | 2012-03-14 | 2013-09-25 | 주식회사 엘지화학 | 관통 구멍이 형성된 전지셀 및 이를 포함하는 전지팩 |
KR20140034974A (ko) * | 2012-09-11 | 2014-03-21 | 주식회사 루트제이드 | 래핑 전극체 및 그 제조방법 |
KR101387617B1 (ko) * | 2012-09-11 | 2014-04-24 | 주식회사 루트제이드 | 이차전지 전극조립체용 분리막 및 이를 포함하는 이차전지 |
KR20150034600A (ko) * | 2013-09-26 | 2015-04-03 | 주식회사 엘지화학 | 전극조립체 및 이차전지의 제조방법 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3312928A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109792021A (zh) * | 2017-03-10 | 2019-05-21 | 株式会社Lg化学 | 锂二次电池用隔膜以及包含其的锂二次电池 |
EP3503257A4 (en) * | 2017-03-10 | 2019-10-09 | LG Chem, Ltd. | SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME |
CN109792021B (zh) * | 2017-03-10 | 2021-11-02 | 株式会社Lg化学 | 锂二次电池用隔膜以及包含其的锂二次电池 |
US11362401B2 (en) | 2017-03-10 | 2022-06-14 | Lg Energy Solution, Ltd. | Separator for lithium secondary battery and lithium secondary battery including the same |
Also Published As
Publication number | Publication date |
---|---|
EP3312928A1 (en) | 2018-04-25 |
US10559790B2 (en) | 2020-02-11 |
US20180183106A1 (en) | 2018-06-28 |
JP6643736B2 (ja) | 2020-02-12 |
CN107750407B (zh) | 2020-04-17 |
CN107750407A (zh) | 2018-03-02 |
EP3312928A4 (en) | 2019-03-20 |
EP3312928B1 (en) | 2020-04-01 |
KR101681758B1 (ko) | 2016-12-02 |
JP2018519636A (ja) | 2018-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014137112A1 (ko) | 단차 구조를 포함하는 전지셀 | |
WO2012086855A1 (ko) | 다방향성 리드-탭 구조를 가진 리튬 이차전지 | |
WO2014042424A1 (ko) | 2차 전지 내부 셀 스택 방법 및 이를 이용하여 제조되는 셀 스택 | |
WO2013168980A1 (ko) | 비정형 구조의 전지팩 | |
WO2020204407A1 (ko) | 이차 전지용 전지 케이스 및 파우치 형 이차 전지 | |
WO2018131788A2 (ko) | 파우치형 이차전지 및 파우치 필름 포밍 장치 | |
WO2016204467A1 (ko) | 리튬이온 이차전지 | |
WO2013100643A1 (ko) | 전극 조립체 및 이를 이용한 이차 전지 | |
WO2014042398A1 (ko) | 래핑 전극체 및 그 제조방법 | |
WO2014017864A1 (ko) | 이차전지 | |
JP2000311713A (ja) | 2次電池 | |
WO2015005652A1 (ko) | 전극 조립체, 이를 포함하는 전지 및 디바이스 | |
WO2014137120A1 (ko) | 젤리롤 타입의 전극 조립체 제조방법 및 젤리롤 타입의 폴리머 이차전지 제조방법 | |
WO2014042397A2 (ko) | 래핑 전극체 및 그 제조방법 | |
WO2016056764A1 (ko) | 양 방향으로 권취되어 있는 전극조립체 및 이를 포함하는 리튬 이차전지 | |
WO2012177083A2 (ko) | 파우치 및 파우치형 이차전지 | |
WO2019017637A1 (ko) | 이차전지용 파우치 외장재, 이를 이용한 파우치형 이차전지 및 그 제조 방법 | |
WO2015037813A2 (ko) | 파우치형 케이스, 전지셀 및 전지셀의 제조방법 | |
WO2021038545A1 (ko) | 파우치 형 전지 케이스 및 파우치 형 이차 전지 | |
WO2020101353A1 (ko) | 파우치 케이스 및 이를 포함하는 파우치형 이차 전지의 제조 방법 | |
WO2013065942A1 (en) | Battery cell and battery module including the same | |
WO2016064100A1 (ko) | 스텝 셀 구조를 가지는 이차전지 | |
WO2020246696A1 (ko) | 이차 전지 제조 장치 및 방법 | |
WO2016056776A1 (ko) | 계단 구조의 전극조립체에 대응하는 형상으로 형성되어 있는 전지케이스를 포함하는 전지셀 | |
WO2016068544A1 (ko) | 바이셀과 풀셀을 포함하는 전극조립체 및 이를 포함하는 이차전지 |
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: 16811880 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15736692 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2017565947 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2016811880 Country of ref document: EP |