WO2022145910A1 - 원통형 배터리 셀, 그리고 이를 포함하는 배터리 팩 및 자동차 - Google Patents
원통형 배터리 셀, 그리고 이를 포함하는 배터리 팩 및 자동차 Download PDFInfo
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- WO2022145910A1 WO2022145910A1 PCT/KR2021/019897 KR2021019897W WO2022145910A1 WO 2022145910 A1 WO2022145910 A1 WO 2022145910A1 KR 2021019897 W KR2021019897 W KR 2021019897W WO 2022145910 A1 WO2022145910 A1 WO 2022145910A1
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- Prior art keywords
- cylindrical battery
- battery cell
- extension member
- electrode
- top cap
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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
- H01M10/05—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
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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
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/143—Fireproof; Explosion-proof
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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
- H01M50/148—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
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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
- H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
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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
- H01M50/204—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
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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
- H01M50/50—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
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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
- H01M50/50—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
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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
- H01M50/50—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
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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
- H01M50/50—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
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/545—Terminals formed by the casing of 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
- H01M50/50—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
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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
- H01M50/50—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
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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
- H01M50/50—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
- H01M50/56—Cup shaped terminals
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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
- H01M50/50—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
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- 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
Definitions
- the present invention relates to a cylindrical battery cell having a structure in which a positive terminal and a negative terminal are formed in the same direction, and a battery pack and a vehicle including the same. More specifically, the present invention relates to a cylindrical battery cell having a structure in which both positive and negative terminals are disposed adjacent to one side of the cylindrical battery cell without significantly changing the structure of the conventional cylindrical battery cell, and a cylindrical battery cell comprising the same It relates to battery packs and automobiles.
- a plurality of cylindrical battery cells are usually erected in a housing, and the upper and lower ends of the cylindrical battery cell are used as positive and negative terminals, respectively, to form a plurality of cylindrical battery cells. electrically connect each other.
- the negative electrode uncoated portion of the electrode assembly accommodated in the battery can extends downward to be electrically connected to the bottom surface of the battery can, and the positive electrode uncoated portion extends upward to be electrically connected to the top cap. Because. That is, in a cylindrical battery cell, it is common that the bottom surface of the battery can is used as the negative terminal, and the top cap that covers the upper opening of the battery can is used as the positive terminal.
- the present invention was created in consideration of the above problems, and an object of the present invention is to provide a cylindrical battery cell structure having a structure in which a positive terminal and a negative terminal are applied in the same direction.
- an object of the present invention is to ensure that, in a cylindrical battery cell, a negative terminal applied in the same direction has a sufficient area to be welded to an electrical connection part such as a bus bar for manufacturing a battery pack.
- an object of the present invention is to minimize a volume occupied by an electrode assembly in a battery can in a cylindrical battery cell.
- a cylindrical battery cell for solving the above-described problems, an electrode assembly having a first electrode tab and a second electrode tab; a battery can accommodating the electrode assembly and electrically connected to the second electrode tab; a top cap covering an upper opening of the battery can, electrically connected to the first electrode tab, and electrically insulated from the battery can; and a terminal extension member coupled to an upper end of the battery can and electrically insulated from the top cap; includes
- the terminal extension member may have a shape extending inward from an upper end of the battery can in a radial direction of the cylindrical battery cell.
- the terminal extension member may have a greater width than that of a flat portion formed at an upper end of the battery can.
- the battery can may include a crimping portion extending inwardly along a radial direction of the cylindrical battery cell from an upper periphery of the battery can.
- the terminal extension member may be coupled to an upper surface of the crimping portion.
- a flat portion may be provided on an upper surface of the crimping portion, and the terminal extension member may be coupled to the flat portion of the crimping portion.
- the terminal extension member may have a greater width than a width of the flat portion of the crimping portion.
- the terminal extension member may be in the form of a washer in which a hole is formed in the center.
- the top cap may include a protrusion protruding upward from a center portion, and the protrusion portion may be provided at a position corresponding to a hole formed in the center portion of the terminal extension member.
- the protrusion may protrude upward to be higher than an upper surface of the terminal extension member.
- the cylindrical battery cell may further include a terminal insulating member interposed between the top cap and the terminal extension member to electrically insulate the top cap and the member and the top cap.
- the terminal insulating member may be in the form of a washer in which a hole is formed in the center.
- the top cap may include a protrusion protruding upward from the center
- the terminal insulating member may include: a first portion interposed between a lower surface of the terminal extension member and an upper surface of a region other than the protrusion of the top cap; and a second portion protruding upward from the first portion and interposed between the protrusion and an inner surface of a hole formed in a central portion of the terminal extension member.
- the battery can includes a crimping portion extending inwardly along a radial direction of the cylindrical battery cell from a periphery of an upper end of the battery can, and an upper surface of the first portion is at the same height as an upper surface of the crimping portion can be located in
- the second portion may have an inner diameter corresponding to an outer diameter of the protrusion.
- the protrusion may have a shape in which an outer diameter of the protrusion gradually decreases toward an upper direction, and an inner diameter of the second portion may correspond to an outer diameter of a lower end of the protrusion.
- the terminal extension member may have an inner diameter corresponding to an outer diameter of the second part.
- the terminal part insulating member may include: a first part interposed between a lower surface of the terminal part extension member and an upper surface of an area other than the protrusion part of the top cap; and a second portion protruding upward from the first portion and interposed between the protrusion and an inner surface of a hole formed in a central portion of the terminal extension member.
- the terminal extension member may have an inner diameter corresponding to an outer diameter of the second part.
- a thickness of the crimping portion in the region where the flat portion is provided may be greater than that of the remaining regions of the crimping portion.
- the second portion may have an extended shape to cover a portion of an upper surface of the top cap.
- the terminal part expansion member and the terminal part insulating member may be a combined body formed by insert injection.
- An insertion protrusion or insertion groove is provided on the upper surface of the crimping part, and an insertion groove engaged with the insertion protrusion formed in the crimping part or an insertion protrusion coupled to the insertion groove formed in the crimping part may be provided on the lower surface of the crimping part.
- the terminal part insulating member may include a resin material, and may be coupled to the terminal part expansion member and the top cap by thermal fusion.
- the electrode assembly may have a jelly roll structure in which a laminate with a separator interposed therebetween is wound in one direction with a first electrode and a second electrode.
- the first electrode tab is a first uncoated region formed by not coating the electrode active material on the upper end of the first electrode, and the second electrode tab is formed by not coating the electrode active material on the lower end of the second electrode. It may be a formed second uncoated region.
- At least a portion of the first electrode tab may include a plurality of first segment segments divided along a winding direction of the electrode assembly.
- the plurality of first segment pieces may be bent along a radial direction of the electrode assembly.
- the cylindrical battery cell may further include a first current collecting plate coupled to an upper portion of the electrode assembly and electrically connected to the top cap, wherein the first current collecting plate is formed by bending the plurality of first segments. It can be bonded on the bonding surface that is formed.
- the plurality of first segment segments may be overlapped in multiple layers, and the first electrode tab includes a weld target region in which the number of overlapping layers of the plurality of first segment segments is kept constant along a radial direction of the electrode assembly.
- the first current collecting plate may be coupled to the first electrode tab in the welding target area.
- At least a portion of the second electrode tab may include a plurality of second segment segments divided along a winding direction of the electrode assembly.
- the plurality of second segment pieces may be bent along a radial direction of the electrode assembly.
- the cylindrical battery cell may further include a second current collecting plate coupled to a lower portion of the electrode assembly and electrically connected to the battery can, wherein the second current collecting plate is formed by bending the plurality of second segments. It can be bonded on the bonding surface that is formed.
- the plurality of second segment segments may be overlapped in multiple layers, and the second electrode tab includes a weld target region in which the number of overlapping layers of the plurality of second segment segments is kept constant along a radial direction of the electrode assembly.
- the second current collecting plate may be coupled to the second electrode tab in the welding target area.
- the cylindrical battery cell may further include a first current collecting plate coupled to an upper portion of the electrode assembly and electrically connected to the top cap.
- the first current collecting plate may include a plurality of tab coupling portions extending radially from the central portion.
- the first current collecting plate may further include a lead disposed between adjacent tab coupling portions and electrically connecting the first current collecting plate and the top cap.
- the battery can include a beading portion having a press-fitted shape along an outer peripheral surface thereof, and the first current collecting plate may be positioned between the electrode assembly and the beading portion.
- a maximum outer diameter of the first current collecting plate may be equal to or smaller than an inner diameter of the battery can at a height at which the beading portion is formed.
- the first current collecting plate may include a first current collecting plate hole formed at a position corresponding to the hole formed in the winding center of the electrode assembly.
- a diameter of the first collector plate hole may be the same as or greater than a diameter of a hole formed in a winding center of the electrode assembly.
- the battery can include a closing part formed at a lower end opposite to the opening, and the closing part may include a venting part that is broken when the internal pressure of the battery can increases to more than a reference value.
- the venting part may be configured to have a thinner thickness compared to a peripheral area of the closing part.
- the venting part may be formed by notching one or both surfaces of the closing part.
- the cylindrical battery cell may further include an insulator disposed between the beading part and the first current collecting plate.
- the insulator may be interposed between the first electrode tab of the electrode assembly and the inner circumferential surface of the battery can.
- a battery pack according to an embodiment of the present invention for solving the above-described problems includes a plurality of cylindrical battery cells of the present invention as described above.
- the plurality of the cylindrical battery cells may be arranged in a predetermined number of rows, and the top cap and the terminal extension member provided in each of the cylindrical battery cells may be disposed to face upward.
- the battery pack may include a plurality of bus bars connecting the plurality of cylindrical battery cells in series and in parallel, and the plurality of bus bars may be disposed on top of the plurality of cylindrical battery cells, and each The bus bar may include a body portion extending between cell terminals of adjacent cylindrical battery cells; a plurality of first bus bar terminals extending in one direction of the body portion and electrically coupled to the top cap of the cylindrical battery cell located in the one direction; and a plurality of second bus bar terminals extending in the other direction of the body portion and electrically coupled to the terminal extension member of the battery can of the cylindrical battery cell located in the other direction.
- the bus bar may include a body portion extending between cell terminals of adjacent cylindrical battery cells; a plurality of first bus bar terminals extending in one direction of the body portion and electrically coupled to the top cap of the cylindrical battery cell located in the one direction; and a plurality of second bus bar terminals extending in the other direction of the body portion and electrically coupled to the terminal extension member of the battery can of the cylindrical battery cell
- a vehicle according to an embodiment of the present invention includes at least one battery pack according to an embodiment of the present invention.
- a cylindrical battery cell structure having a structure in which a positive terminal and a negative terminal are applied in the same direction, thereby simplifying the electrical connection structure of a plurality of cylindrical battery cells as well as a battery pack
- the energy density of the battery pack can be improved by minimizing the pack volume during construction.
- the negative terminal of the cylindrical battery cell has a sufficient area to be welded to an electrical connection component such as a bus bar, the bonding strength between the negative terminal and the electrical connection component can be sufficiently secured, and the electrical connection The resistance at the junction of the component and the negative terminal can be reduced to a desirable level.
- FIG. 1 is a view showing the appearance of a cylindrical battery cell according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view illustrating an internal structure of a cylindrical battery cell according to an embodiment of the present invention.
- 3 to 5 are partial cross-sectional views illustrating an upper structure of a cylindrical battery cell according to an embodiment of the present invention.
- FIG. 6 and 7 are views illustrating a first current collecting plate applied to the present invention.
- FIGS. 8 and 9 are cross-sectional views illustrating a coupling structure of a first current collecting plate and an electrode assembly applied to the present invention.
- FIG. 10 is a partial cross-sectional view illustrating a lower structure of a cylindrical battery cell according to an embodiment of the present invention.
- FIG. 11 is a view showing a lower surface of a cylindrical battery cell according to an embodiment of the present invention.
- FIG. 12 is a view illustrating an electrode assembly in which an uncoated region is bent according to an embodiment of the present invention.
- FIG. 13 is a top plan view illustrating a state in which a plurality of cylindrical battery cells are connected in series and in parallel using a bus bar according to an embodiment of the present invention.
- FIG. 14 is a schematic diagram illustrating a battery pack according to an embodiment of the present invention.
- 15 is a conceptual diagram illustrating a vehicle according to an embodiment of the present invention.
- a cylindrical battery cell 1 according to an embodiment of the present invention includes an electrode assembly 10 , a battery can 20 , a top cap 30 , and a terminal extension member 40 . do.
- the cylindrical battery cell 1 in addition to the above-described components, additionally a sealing gasket 50 and/or a terminal insulating member 60 and/or a first current collecting plate 70 and/or a second current collecting plate 70 ') and/or an insulator 80 and/or a connection plate 90 may be further included.
- the electrode assembly 10 includes a first electrode having a first polarity, a second electrode having a second polarity, and a separator interposed between the first electrode and the second electrode.
- the electrode assembly 10 may have a jelly-roll structure. That is, the electrode assembly 10 is a stack formed by stacking the first electrode and the second electrode having a sheet shape at least once with a separator interposed therebetween with respect to the winding center (C). It can be manufactured by winding in the direction. In this case, an additional separator may be provided on the outer peripheral surface of the electrode assembly 10 to insulate it from the battery can 20 . If it is a jelly roll structure known in the art, it can be applied without limitation to the present invention.
- the first electrode is an anode or a cathode
- the second electrode corresponds to an electrode having a polarity opposite to that of the first electrode.
- the first electrode includes a first electrode current collector and a first electrode active material coated on one or both surfaces of the first electrode current collector.
- the first electrode includes an uncoated region (first uncoated region) formed by not coating an electrode active material on its upper end. That is, an uncoated region (first uncoated region) to which the first electrode active material is not applied is present at one end of the first electrode current collector in the width direction (parallel to the Z-axis).
- the uncoated region may function as the first electrode tab 11 by itself.
- the first electrode tab 11 is provided above the electrode assembly 10 accommodated in the battery can 20 in the height direction (parallel to the Z-axis).
- the first electrode current collector includes a first uncoated region in which an active material layer is not coated on a long side end and a separator is exposed to the outside, and at least a portion of the first uncoated region is used as an electrode tab by itself.
- the first electrode tab may be, for example, a positive electrode tab.
- a portion of the first electrode tab 11 that is, at least a portion of the first uncoated region may include a plurality of first segment pieces 11a divided along the winding direction of the electrode assembly 10 .
- the first segment pieces 11a may be bent along the radial direction of the electrode assembly 10 , and in this case, the plurality of first segment segments 11a may overlap in multiple layers.
- the first current collecting plate 70 to be described later may be coupled to a region in which the plurality of first segment pieces 11a overlap in multiple layers.
- the electrode assembly 10 may include a welding target region, which is a region in which the number of overlapping layers of the first segment 11a is kept constant along the radial direction of the electrode assembly 10 .
- a welding target region which is a region in which the number of overlapping layers of the first segment 11a is kept constant along the radial direction of the electrode assembly 10 .
- the number of overlapping layers is kept to a maximum, it may be advantageous for welding of the first current collecting plate 70 and the first electrode tab 11 to be described later to be performed in this region.
- the second electrode includes a second electrode current collector and a second electrode active material coated on one or both surfaces of the second electrode current collector.
- the second electrode includes an uncoated region (second uncoated region) formed by not coating an electrode active material at a lower end thereof. That is, at the other end of the second electrode current collector in the width direction (in the direction parallel to the Z axis), there is an uncoated region to which the second electrode active material is not applied.
- the uncoated region may function as the second electrode tab 12 by itself.
- the second electrode tab 12 is provided below the electrode assembly 10 accommodated in the battery can 20 in the height direction (parallel to the Z-axis).
- the second electrode current collector includes a second uncoated region in which an active material layer is not coated on a long side end and a separator is exposed to the outside, and at least a portion of the second uncoated region is used as an electrode tab by itself.
- the second electrode tab 12 may be, for example, a negative electrode tab.
- a portion of the second electrode tab 12 that is, at least a portion of the second uncoated region may include a plurality of second segment segments (not shown) divided along the winding direction of the electrode assembly 10 .
- the second segment pieces may be bent along a radial direction of the electrode assembly 10 , and in this case, the plurality of second segment segments may overlap in multiple layers.
- the second current collecting plate 70 ′ which will be described later, may be coupled to a region in which the plurality of second segment pieces overlap in multiple layers.
- the electrode assembly 10 may include a welding target region, which is a region in which the number of overlapping layers of the second segment is kept constant along the radial direction of the electrode assembly 10 .
- a welding target region which is a region in which the number of overlapping layers of the second segment is kept constant along the radial direction of the electrode assembly 10 .
- the first electrode tab 11 and the second electrode tab 12 may extend in opposite directions along a height direction (parallel to the Z-axis) of the cylindrical battery cell 1 .
- the first electrode tab 11 extends toward the opening formed at the upper end of the battery can 20
- the second electrode tab 12 extends toward the closing portion formed at the lower end of the battery can 20 . do.
- the battery can 20 is a substantially cylindrical container with an opening formed thereon, and is made of a conductive metal material.
- the battery can 20 accommodates the electrode assembly 10 through the upper opening, and also accommodates the electrolyte.
- the closing part formed at the side wall part and the lower end of the battery can 20 may be integrally formed, or may be formed separately from each other and coupled to each other by welding or the like.
- the battery can 20 is electrically connected to the second electrode tab 12 of the electrode assembly 10 . Accordingly, the battery can 20 has the same second polarity as the second electrode tab 12 . Electrical connection between the electrode assembly 10 and the battery can 20 may be made through, for example, the second current collecting plate 70 ′.
- the battery can 20 may include a beading part 21 and/or a crimping part 22 formed at an upper end thereof.
- the beading part 21 is formed adjacent to the upper end opening of the battery can 20 .
- the beading part 21 has a shape press-fitted along the outer peripheral surface of the battery can 20 . That is, the beading portion 21 is formed by press-fitting the outer peripheral surface of the battery can 20 . Accordingly, the beading portion 21 has a shape recessed to a predetermined depth along a radial direction from the outer peripheral surface of the battery can 20 , and extends along the circumferential direction of the battery can 20 .
- the beading part 21 prevents the electrode assembly 10 having a size corresponding to the width of the battery can 20 from escaping through the upper opening of the battery can 20 , and the top cap 30 is seated therein. It may function as a support.
- the crimping part 22 may be formed on the upper end of the battery can 20 .
- the crimping part 22 may have a shape extending inward from the upper periphery of the battery can 20 in the radial direction of the cylindrical battery cell 1 .
- the crimping part 22 is provided in a region corresponding to the periphery of the upper surface of the top cap 30 to fix the top cap 30 , thereby preventing the top cap 30 from being separated upward.
- the crimping part 22 is formed on the beading part 21 .
- the crimping part 22 extends from the beading part 21 , and extends and bends to surround the outer peripheral surface of the top cap 30 disposed on the beading part 21 and a part of the upper surface of the top cap 30 .
- the upper end of the crimping part 22 may extend inwardly by a predetermined distance along the radial direction of the cylindrical battery cell 1 to enclose a portion of the upper surface of the top cap 30 . Accordingly, the crimping part 22 fixes the periphery of the upper surface of the top cap 30 . That is, the area around the edge of the top cap 30 is interposed between the top of the crimping part 22 and the beading part 21 to be fixed to the battery can 20 , and covers the opening of the battery can 20 . .
- the venting part 23 is formed to prevent the internal pressure caused by the gas generated inside the battery can 20 from increasing beyond a preset value. may be further provided.
- the venting part 23 may be provided in a closing part formed at the lower end of the battery can 20 .
- the venting part 23 corresponds to a region having weaker rigidity compared to a peripheral region among the closed parts formed at the lower end of the battery can 20 .
- the venting part 23 may be configured to have a thinner thickness, for example, compared to the rest of the closed part. Accordingly, when an abnormality occurs in the cylindrical battery cell 1 and the internal pressure increases to a certain level or more, the venting part 23 is broken and the gas generated inside the battery can 20 is discharged.
- the cylindrical battery cell 1 according to the present invention has a structure in which both a positive terminal and a negative terminal are provided on the upper side, as will be described later. Therefore, by providing the venting part 23 in the closing part of the battery can 20 positioned opposite to the positive terminal and the negative terminal as described above, safety can be further improved. That is, according to the structure of the cylindrical battery cell 1 of the present invention, when the venting gas is ejected due to the breakage of the venting part 23, the gas flows in the opposite direction to the part provided with the electrical connection parts such as bus bars. can be made to erupt.
- the cylindrical battery cell 1 of the present invention it is possible to reduce concerns about the spread of an event that may be caused by direct contact of a high-temperature venting gas to an electrical connection portion such as a bus bar during venting.
- the cylindrical battery cell 1 according to an embodiment of the present invention has a structure in which both a positive terminal and a negative terminal are present on the upper part, the structure of the upper part is more complicated than the structure of the lower part. Accordingly, it may be advantageous to provide the venting part 23 on the closed surface of the lower end of the battery can 20 for smooth discharge of the gas generated inside the battery can 20 .
- venting portion 23 may be discontinuously formed, and may have an approximately straight line and/or curved line and/or an ellipse and/or other geometric shape.
- the venting part 23 may have a shape in which a thickness is partially reduced by notching an inner surface and/or an outer surface of the closing part provided at the lower end of the battery can 20 . That is, the venting part 23 may be formed by notching on one side or notching on both sides.
- the top cap 30 is a component made of a conductive metal material and covers the upper opening of the battery can 20 .
- the top cap 30 is electrically connected to the first electrode tab 11 of the electrode assembly 10 and is electrically insulated from the battery can 20 . Accordingly, the top cap 30 has the same first polarity as the first electrode tab 11 of the electrode assembly 10 , and may function as a first electrode terminal of the cylindrical battery cell 1 of the present invention.
- Electrical connection between the first electrode tab 11 and the top cap 30 may be made by, for example, the first current collecting plate 70 and/or the lead 72 .
- the top cap 30 may be seated on the beading portion 21 formed on the battery can 20 .
- the top cap 30 is fixed by a crimping part 22 . That is, the top cap 30 may have a periphery of its lower surface supported by the upper surface of the beading unit 21 , and the upper periphery of the upper cap may be fixed by bending the upper end of the crimping unit 22 . have.
- the top opening of the battery can 20 is sealed between the top cap 30 and the crimping part 22 of the battery can 20 , and the battery can 20 and the top cap 30 are electrically insulated.
- a sealing gasket 50 may be interposed therebetween.
- the sealing gasket 50 may include a material having insulation and elasticity.
- the sealing gasket 50 may include, for example, a polymer resin.
- the sealing gasket 50 may be bent together along the bent shape of the crimping part 22 of the battery can 20 .
- the sealing gasket 50 may be interposed between the upper surface of the beading part 21 and the top of the crimping part 22 .
- the top cap ( 30) may include a protrusion 31 substantially protruding upward from the center thereof.
- the protrusion 31 may be provided at a position corresponding to a hole formed in a substantially central portion of the terminal extension member 40 .
- the protrusion 31 may protrude upward higher than the upper surface of the terminal extension member 40 through a hole of the terminal extension member 40 to be described later to facilitate contact with an electrical connection component such as a bus bar. have.
- the present invention is not limited thereto, and the top cap 30 may be formed to be flat as a whole. Also, even when the top cap 30 includes the protrusion 31 , the upper surface of the protrusion 31 may be positioned at about the same height or lower than the upper surface of the terminal extension member 40 .
- the terminal extension member 40 is made of a conductive metal material.
- the terminal extension member 40 may have, for example, a substantially disk shape in which a hole is formed in a center thereof. That is, the terminal extension member 40 may have a substantially washer shape in which a hole is formed in a center thereof.
- the terminal extension member 40 is coupled to the upper end of the battery can 20 .
- the terminal extension member 40 has a shape extending inward from the upper end of the battery can 20 in the radial direction of the cylindrical battery cell 1 . Accordingly, the terminal extension member 40 has a greater width than that of the flat portion formed on the upper end of the battery can 20 .
- the terminal extension member 40 moves from the upper end of the battery can 20 to the cylindrical battery cell 1 more than the flat portion formed at the top of the battery can 20 extends along the radial direction of the cylindrical battery cell 1 . ) is longer along the radial direction.
- the flat portion formed on the upper end of the battery can 20 may be substantially parallel to the lower surface of the battery can 20 .
- the terminal extension member 40 is coupled to the upper end of the crimping part 22 .
- a flat portion substantially parallel to the closing portion of the battery can 20 may be formed on the upper end of the crimping portion 22 .
- the terminal extension member 40 may be coupled to the flat portion formed on the upper end of the crimping portion 22 .
- the coupling between the terminal part expansion member 40 and the crimping part 22 may be made, for example, by laser welding.
- the flat part coupled to the terminal part expansion member 40 may be configured to have a greater thickness than the rest of the crimping part 22 . In this case, in the process of fixing the terminal extension member 40 to the upper end of the crimping part 22 through laser welding, the risk of penetration of the crimping part 22 is reduced even if the output of the laser is sufficiently increased for firm fixing. .
- the terminal extension member 40 is electrically insulated from the top cap 30 .
- the top cap 30 is exposed through a hole formed in the center of the terminal extension member 40 , and the terminal extension member 40 and the top cap 30 are spaced apart from each other.
- the protrusion 31 may be exposed through a hole formed at a substantially central portion of the terminal extension member 40 .
- the protrusion 31 is spaced apart from the inner surface of the hole formed in the terminal extension member 40 , and the remaining portion excluding the protrusion 31 of the top cap 30 is vertically aligned with the terminal extension member 40 . are spaced apart
- the terminal extension member 40 has the same second polarity as the second electrode tab 12 and the battery can 20 of the electrode assembly 10 , and thus the second electrode terminal of the cylindrical battery cell 1 .
- the cylindrical battery cell 1 according to an embodiment of the present invention has a structure in which both the first electrode terminal having the first polarity and the second electrode terminal having the second polarity are arranged in the same direction.
- the width D2 of the terminal extension member 40 is greater than the width D1 of the flat portion formed on the upper surface of the crimping portion 22 of the battery can 20 .
- the terminal extension member 40 has a shape extending from the upper surface of the crimping portion 22 toward the radial center of the cylindrical battery cell 1 .
- the terminal extension member 40 extends from the upper surface of the crimping part 22 toward the protrusion 31 of the top cap 30 .
- the battery can 20 may include an insertion groove 22a formed on the upper surface of the crimping part 22 , and the terminal part extension member 40 has an insertion groove 22a on its lower surface. It has a shape corresponding to and may include an insertion protrusion 41 coupled to the insertion groove 22a.
- the battery can 20 has an insertion protrusion formed on the upper surface of the crimping part 22, and the terminal extension member 40 has a shape corresponding thereto and it is also possible to have an insertion groove coupled to the insertion protrusion. do.
- the insertion groove 22a and the insertion protrusion 41 may increase the contact area between the terminal extension member 40 and the crimping portion 22, thereby improving the fastening force and reducing the electrical resistance at the coupling portion.
- the insertion groove 22a and the insertion protrusion 41 guide the seating position of the terminal extension member 40 on the crimping part 22, thereby guiding the terminal extension member 40 and the top cap 30. ) can prevent contact between the protrusions 31 .
- the insertion groove 22a and the insertion protrusion 41 may improve fairness by preventing the terminal extension member 40 from moving on the crimping portion 22 during the welding process.
- the terminal part insulating member 60 is interposed between the top cap 30 and the terminal part expansion member 40 .
- the terminal part insulating member 60, the terminal part expansion member and the terminal part insulating member 60 are made of an insulating material.
- the terminal insulating member 60 may have, for example, a substantially washer shape in which a hole is formed in a central portion thereof.
- the top cap 30 functions as a first electrode terminal having a first polarity
- the terminal extension member 40 has a first polarity opposite to the first polarity. Since it functions as a second electrode terminal having two polarities, the top cap 30 and the terminal part expansion member 40 must be electrically insulated. Therefore, it may be advantageous that the terminal part insulating member 60 is applied to stably maintain the insulating state.
- the terminal part insulating member 60 is interposed between the lower surface of the terminal part expansion member 40 and the top cap 30 .
- the terminal extension member 40 has a width D2 greater than the width D1 of the upper surface of the crimping portion 22 , and the protrusion 31 of the top cap 30 from the crimping portion 22 . ) in the direction toward the Accordingly, the terminal part insulating member 60 is formed at the center of the terminal part expansion member 40 so that the inner surface of the hole formed in the central part of the terminal part expansion member 40 and the protrusion part 31 of the top cap 30 cannot contact each other. It may have an extended shape to cover the inner surface of the hole formed in the .
- the terminal insulating member 60 may include a lower surface of the terminal extension member 40 and an upper surface of the top cap 30 (when the top cap 30 includes the protrusion 31 , the protrusion 31 )
- the first part 61 interposed between the first part 61 and the first part 61 , and the inner surface of the hole formed in the approximate center of the terminal extension member 40 and the top cap 30
- a second portion 62 interposed between the protrusions 31 may be included.
- the second part 62 may have an inner diameter corresponding to the outer diameter of the protrusion 31 of the top cap 30 . This is to ensure that the terminal extension member 40 is well fixed without movement on the top cap 30 .
- the protrusion 31 may have, for example, a shape in which an outer diameter thereof gradually decreases toward the upper side.
- the terminal insulating member 40 may be naturally inserted into the protrusion 31 by making the inner diameter of the second part 62 correspond to the outer diameter of the lower end of the protrusion 31 .
- a hole formed in a substantially central portion of the terminal extension member 40 may have an inner diameter corresponding to an outer diameter of the second portion 62 of the terminal portion insulating member 60 . This is to ensure that the terminal part expansion member 40 is well fixed without movement on the terminal part insulating member 60 . As such, when the terminal extension member 40 is well fixed on the terminal insulation member 60 , a welding process between the terminal extension member 40 and the crimping part 22 may be easily performed. Meanwhile, the upper surface of the terminal insulating member 60 (the upper surface of the first part 61 ) may be located at about the same height as the upper surface of the crimping unit 22 formed at the upper end of the battery can 20 . In this case, when the terminal part extension member 40 is seated on the terminal part insulating member 60 , the lower surface of the terminal part extension member 40 and the upper surface of the crimping part 22 come into natural contact.
- the terminal part insulating member 60 When the terminal part insulating member 60 is made of a resin material, the terminal part insulating member 60 may be coupled to the terminal part expansion member 40 and the top cap 30 by thermal fusion. In this case, airtightness at the bonding interface between the terminal insulating member 60 and the terminal extending member 40 and at the bonding interface between the terminal insulating member 60 and the top cap 30 may be enhanced.
- the terminal part insulating member 60 may have an extended shape to cover a portion of the upper surface of the terminal part extension member 40 . That is, the second part 62 (refer to FIG. 3 ) of the terminal part insulating member 60 is further extended to cover the periphery of the upper surface of the terminal part extension member 40 as well as the inner peripheral surface of the terminal part extension member 40 . can have In this case, the effect of preventing contact between the terminal extension member 40 and the top cap 30 may be further improved.
- the process of seating the terminal part extension member 40 on the crimping part 22 is more accurate and quicker.
- the terminal part insulating member 60 is inserted through a hole formed in the center of the terminal part expansion member 40 and fixed to the terminal part expansion member 60, it is composed of a terminal part expansion member 40 and a terminal part insulating member 60
- the terminal portion extension member 40 may be naturally seated in an accurate position.
- the protrusion 31 of the top cap 30 may be exposed upwardly through a hole formed at a substantially central portion of the terminal insulating member 60 .
- the combination of the terminal part insulating member 60 and the terminal part expansion member 40 shown in FIG. 4 may be manufactured by insert injection. That is, insert injection is performed so that the terminal part expansion member 40 made of a metal material is inserted/fixed into the terminal part insulating member 60 made of a resin material. , it is possible to bring about the effect of natural alignment by arranging this assembly on the crimping portion 22 and the top cap 30 .
- the insulation between the terminal part expansion member 40 and the top cap 30 may be realized not only by the method of applying the terminal part insulating member 60 but also by other methods.
- an insulating coating layer may be formed in a region facing the top cap 60 of the terminal extension member 40 .
- an insulating coating layer may be formed in an area of the top cap 60 facing the terminal extension member 40 .
- the first current collecting plate 70 is coupled to an upper portion of the electrode assembly 10 .
- the first current collecting plate 70 may be positioned between the electrode assembly 10 and the beading part 21 .
- the first current collecting plate 70 is made of a conductive metal material, and is coupled to the first electrode tab 11 .
- the first current collecting plate 70 is electrically connected to the top cap 30 .
- a lead 72 may be connected to the first current collecting plate 70 , and the lead 72 extends upward and is directly coupled to the top cap 30 or a connection plate coupled to the lower surface of the top cap 30 ( 90) can be combined. Accordingly, the top cap 30 may have the same first polarity as the first electrode tab 11 , and may function as a first electrode terminal.
- the first current collecting plate 70 may include a plurality of tab coupling parts 71 extending radially from the center. A space between the adjacent tab coupling portions 71 may be used as a space for electrolyte injection.
- the first current collecting plate 70 and the lead 72 may be integrally formed.
- the lead 72 may have an elongated plate shape extending outwardly from the center of the first current collecting plate 70 , similarly to the tab coupling part 71 .
- the leads 72 may be provided between the tab coupling portions 71 adjacent to each other, for example.
- the structure of the first current collecting plate 70 of the present invention is not limited thereto, and may have a shape corresponding to the upper surface of the electrode assembly 10 so as to completely cover the upper portion of the first electrode tab 11 .
- the first current collecting plate 70 may include a first current collecting plate hole H1 formed at a substantially central portion thereof.
- the first collector plate hole H1 may be provided at a position corresponding to the hole formed in the winding center C of the electrode assembly 10 .
- the first current collecting plate hole H1 is a space for laser irradiation for injection of electrolyte and welding between the second current collecting plate 70 ′ and the bottom surface of the battery can 20 or an insertion space for a tool for ultrasonic welding etc. can be used.
- the diameter of the first collector plate hole H1 is approximately equal to or greater than the diameter of the hole formed in the winding center C of the electrode assembly 10 . can be
- the maximum outer diameter of the first current collecting plate 70 (twice the distance from the center to the end of the tab coupling portion 71 ) is the minimum inner diameter of the battery can 20 (at the position where the beading portion 21 is formed)
- the inner diameter of the battery can 20) may be approximately equal to or smaller than the inner diameter.
- the electrode assembly 10 is directly pressed by the beading part 22 or the electrode assembly 10 by the first current collecting plate 70 during the sizing process for adjusting the total height of the cylindrical battery cell 1 ( 10) can be prevented from being pressed and damaged.
- the first current collecting plate 70 may include a plurality of radially formed irregularities on a lower surface thereof. When the unevenness is formed, the unevenness may be press-fitted into the electrode tabs 11 and 12 by pressing the first current collecting plate 70 .
- the first current collecting plate 70 is coupled to an end of the first electrode tab 11 .
- the coupling between the first electrode tab 11 and the first current collecting plate 70 may be performed, for example, by laser welding.
- the laser welding may be performed by partially melting the base material of the first current collecting plate 70 , and in a state in which solder for welding is interposed between the first current collecting plate 70 and the first electrode tab 11 . may be done In this case, the solder may have a lower melting point compared to the first current collecting plate 70 and the first electrode tab 11 .
- the first current collecting plate 70 may be coupled to a coupling surface formed by bending an end of the first electrode tab 11 in a direction parallel to the first current collecting plate 70 .
- a bending direction of the first electrode tab 11 may be, for example, a direction toward a winding center of the electrode assembly 10 .
- the first electrode tab 11 of the present invention may have a plurality of first segment pieces 11a. The plurality of first segment pieces 11a may be bent along a radial direction of the electrode assembly 10 .
- the first segment pieces 11a bent in one direction may overlap each other in a plurality of layers.
- the first current collecting plate 70 may be coupled to the first electrode tab 11 in the welding target area, which is a section in which the number of overlapping layers is maintained constant.
- the second current collecting plate 70 ′ may be coupled to the lower surface of the electrode assembly 10 .
- the second current collecting plate 70 ′ is electrically connected to the second electrode tab 12 of the electrode assembly 10 and the battery can 20 .
- One surface of the second current collecting plate 70 ′ may be coupled to the second electrode tab 12 of the electrode assembly 10 by, for example, welding, and the opposite surface is the inner bottom surface of the battery can 20 . on, ie on the inner side of the closure, for example by welding.
- the coupling structure of the second current collecting plate 70 ′ and the second electrode tab 12 coupled to the lower surface of the electrode assembly 10 is that of the first current collecting plate 70 and the first electrode tab 11 described above. It may be substantially the same as the bonding structure.
- the second electrode tab 12 may also include second segment segments (not shown), and the second segment segments also include the electrode assembly 10 . ) may have a bent shape along the radial direction. In this case, there is a welding target region in which the number of overlapping layers of the second segment pieces is kept constant at an approximately maximum value along the radial direction of the electrode assembly 10 .
- the second current collecting plate 70 ′ may be coupled to the second electrode tab 12 in the welding target area.
- the second current collecting plate 70 ′ may include a second current collecting plate hole H2 formed in a central portion thereof.
- the second collector plate hole H2 may be formed at a position corresponding to the hole formed in the winding center C of the electrode assembly 10 .
- the second collector plate hole H2 preferably has a diameter that is approximately the same as or smaller than that of the hole formed in the winding center C of the electrode assembly 10 . This is to allow the second current collecting plate 70 ′ to be welded to the bottom surface of the battery can 20 by irradiating a laser or inserting a welding rod from the upper portion of the electrode assembly 10 .
- the insulator 80 is disposed between the upper end of the electrode assembly 10 and the beading portion 21 or between the first current collecting plate 70 and the beading portion 21 coupled to the upper portion of the electrode assembly 10 . A contact between the first electrode tab 11 and the battery can 20 or between the first current collecting plate 70 and the battery can 20 is prevented.
- the insulator 80 may also be interposed between the first electrode tab 11 of the electrode assembly 10 and the inner peripheral surface of the battery can 20 .
- the insulator 80 includes a lead hole 81 through which a lead 72 extending upwardly from the first current collecting plate 70 or from the first electrode tab 11 can be drawn out.
- the lead 72 is drawn upward through the lead hole 81 and is coupled to the lower surface of the extension plate 90 or the lower surface of the top cap 30 .
- the cylindrical battery cell 1 includes a top cap 30 provided on one side of the battery can 20 in the longitudinal direction (parallel to the Z axis in FIG. 2 ) and It has a structure in which the terminal extension member 40 can be used as a first electrode terminal and a second electrode terminal, respectively. Therefore, in the case of electrically connecting a plurality of cylindrical battery cells 1 according to an embodiment of the present invention, it is possible to arrange an electrical connection part such as a bus bar only on one side of the cylindrical battery cell 1 . and, thereby, may bring about simplification of the structure and improvement of energy density.
- the plurality of cylindrical battery cells 1 may be connected in series, parallel, or a mixture of series and parallel on the upper portion of the cylindrical battery cell 1 using a bus bar 150 .
- 13 illustrates a structure in which a plurality of cylindrical battery cells 1 are connected in a mixed form in series and in parallel by way of example.
- the number of cylindrical battery cells 1 may be increased or decreased in consideration of the capacity of the battery pack.
- the top cap 30 serving as the first electrode terminal may have a positive polarity
- the terminal extension member 40 serving as the second electrode terminal may have a negative polarity.
- the reverse is also possible.
- the plurality of cylindrical battery cells 1 may be arranged in a plurality of columns and rows.
- a column is a vertical direction when viewed with reference to FIG. 13
- a row is a left-right direction when viewed with reference to FIG. 13 .
- the cylindrical battery cells 1 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 top cap 30 are connected to each other.
- the bus bar 150 may be disposed above the plurality of cylindrical battery cells 1, more preferably between adjacent rows. Alternatively, the bus bars 150 may be disposed between adjacent rows.
- the bus bar 150 may connect the cylindrical battery cells 1 disposed in the same row in parallel to each other, and connect the cylindrical battery cells 1 disposed in two adjacent rows in series to each other. have.
- the bus bar 150 may include a body portion 151 , a plurality of first bus bar terminals 152 , and a plurality of second bus bar terminals 153 for serial and parallel connection.
- the body portion 151 may extend between the centers of the top cap 30 of each of the adjacent cylindrical battery cells 1 , preferably between rows of cylindrical battery cells 1 .
- the body part 151 may extend along a row of cylindrical battery cells 1 and may be regularly bent like a zigzag shape.
- the plurality of first bus bar terminals 152 protrude from one side of the body portion 151 toward the top cap 30 of each cylindrical battery cell 1 , and are exposed through the central portion of the terminal extension member 40 . It may be electrically coupled to the central portion of the top cap 30 . Electrical coupling between the first bus bar terminal 152 and the top cap 30 may be performed by laser welding, ultrasonic welding, or the like.
- the plurality of second bus bar terminals 153 protrude from the other side of the body part 151 toward the terminal extension member 40 of each cylindrical battery cell 1 , and are electrically connected to the terminal extension member 40 . can be combined with Electrical coupling between the second bus bar terminal 153 and the terminal extension member 40 may be performed by laser welding, ultrasonic welding, or the like.
- the body portion 151, the plurality of first bus bar terminals 152 and the plurality of second bus bar terminals 153 may be formed of a single 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 151, the plurality of first bus bar terminals 152 and the second bus bar terminals 153 may be manufactured as separate pieces and then coupled to each other through welding or the like.
- the top cap 30 having a first polarity and the terminal extension member 40 having a second polarity are in the same direction (along the Z axis when viewed based on the drawing of the present invention). upward direction), so that the electrical connection of the cylindrical battery cells 1 can be easily implemented using the bus bar 150 .
- the coupling area of the bus bar 150 can be sufficiently secured to increase the coupling force of the bus bar 150, In addition, the resistance of the battery pack including the cylindrical battery cell 1 can be sufficiently reduced.
- a battery pack 3 includes a battery cell assembly in which a plurality of cylindrical battery cells 1 according to an embodiment of the present invention are electrically connected as described above, and the same. and a pack housing (2) for accommodating it.
- components such as a bus bar and a power terminal for electrical connection are omitted for convenience of illustration.
- the electrical connection structure of the plurality of battery cells 1 for manufacturing the battery pack 3 has been exemplarily described above with reference to FIG. 12 .
- a vehicle 5 may be, for example, an electric vehicle, and includes a battery pack 3 according to an embodiment of the present invention.
- the vehicle 5 operates by receiving power from the battery pack 3 according to an embodiment of the present invention.
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
Claims (50)
- 제1 전극 탭 및 제2 전극 탭을 구비하는 전극 조립체;상기 전극 조립체를 수용하며 상기 제2 전극 탭과 전기적으로 연결되는 전지 캔;상기 전지 캔의 상단 개구부를 커버하며 상기 제1 전극 탭과 전기적으로 연결되며 상기 전지 캔과 전기적으로 절연되는 탑 캡; 및상기 전지 캔의 상단에 결합되며 상기 탑 캡과 전기적으로 절연되는 단자부 확장 부재;를 포함하는 원통형 배터리 셀.
- 제1항에 있어서,상기 단자부 확장 부재는,상기 전지 캔의 상단으로부터 상기 원통형 배터리 셀의 반경 방향을 따라 내측으로 연장된 형태를 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제2항에 있어서,상기 단자부 확장 부재는,상기 전지 캔의 상단에 형성되는 평탄부와 비교하여 더 큰 폭을 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제1항에 있어서,상기 전지 캔은,상기 전지 캔의 상단 둘레로부터 상기 원통형 배터리 셀의 반경 방향을 따라 내측으로 연장된 형태를 갖는 클림핑부를 구비하는 것을 특징으로 하는 원통형 배터리 셀.
- 제4항에 있어서,상기 단자부 확장 부재는,상기 클림핑부의 상면에 결합되는 것을 특징으로 하는 원통형 배터리 셀.
- 제4항에 있어서,상기 클림핑부의 상면에는 평탄부가 구비되며,상기 단자부 확장 부재는 상기 클림핑부의 평탄부 상에 결합되는 것을 특징으로 하는 원통형 배터리 셀.
- 제6항에 있어서,상기 단자부 확장 부재는,상기 클림핑부의 평탄부의 폭과 비교하여 더 큰 폭을 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제1항에 있어서,상기 단자부 확장 부재는,중심부에 홀이 형성된 와셔 형태인 것을 특징으로 하는 원통형 배터리 셀.
- 제8항에 있어서,상기 탑 캡은, 중심부로부터 상방으로 돌출된 돌출부를 구비하며,상기 돌출부는, 상기 단자부 확장 부재의 중심부에 형성된 홀과 대응되는 위치에 구비되는 것을 특징으로 하는 원통형 배터리 셀.
- 제9항에 있어서,상기 돌출부는,상기 단자부 확장 부재의 상면보다 더 높게 상방으로 돌출되는 것을 특징으로 하는 원통형 배터리 셀.
- 제1항에 있어서,상기 원통형 배터리 셀은,상기 탑 캡과 상기 단자부 확장 부재 사이에 개재되어 상기 탑 캡과 부재와 상기 탑 캡 사이를 전기적으로 절연시키는 단자부 절연 부재를 더 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제11항에 있어서,상기 단자부 절연 부재는,중심부에 홀이 형성된 와셔 형태인 것을 특징으로 하는 원통형 배터리 셀.
- 제12항에 있어서,상기 탑 캡은, 중심부로부터 상방으로 돌출된 돌출부를 구비하며,상기 단자부 절연 부재는,상기 단자부 확장 부재의 하면과 상기 탑 캡 중 상기 돌출부를 제외한 나머지 영역의 상면 사이에 개재되는 제1 부분; 및상기 제1 부분으로부터 상방으로 돌출되며 상기 단자부 확장 부재의 중심부에 형성된 홀의 내측면과 상기 돌출부 사이에 개재되는 제2 부분;을 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제13항에 있어서,상기 전지 캔은,상기 전지 캔의 상단 둘레로부터 상기 원통형 배터리 셀의 반경 방향을 따라 내측으로 연장된 형태를 갖는 클림핑부를 구비하고,상기 제1 부분의 상면은,상기 클림핑부의 상면과 동일한 높이에 위치하는 것을 특징으로 하는 원통형 배터리 셀.
- 제13항에 있어서,상기 제2 부분은,상기 돌출부의 외경과 대응되는 내경을 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제15항에 있어서,상기 돌출부는, 상방으로 갈수록 그 외경이 점점 감소하는 형태를 가지며,상기 제2 부분의 내경은, 상기 돌출부의 하단부의 외경과 대응되는 것을 특징으로 하는 원통형 배터리 셀.
- 제13항에 있어서,상기 단자부 확장 부재는,상기 제2 부분의 외경과 대응되는 내경을 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제13항에 있어서,상기 단자부 절연 부재는,상기 단자부 확장 부재의 하면과 상기 탑 캡 중 상기 돌출부를 제외한 나머지 영역의 상면 사이에 개재되는 제1 부분; 및상기 제1 부분으로부터 상방으로 돌출되며 상기 단자부 확장 부재의 중심부에 형성된 홀의 내측면과 상기 돌출부 사이에 개재되는 제2 부분;을 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제18항에 있어서,상기 단자부 확장 부재는,상기 제2 부분의 외경과 대응되는 내경을 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제6항에 있어서,상기 평탄부가 구비된 영역에서의 상기 클림핑부의 두께는,상기 클림핑부의 나머지 영역과 비교하여 더 두꺼운 두께를 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제18항에 있어서,상기 제2 부분은,상기 탑 캡의 상면의 일부를 커버하도록 연장된 형태를 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제21항에 있어서,상기 단자부 확장 부재와 상기 단자부 절연 부재는,인서트 사출에 의해 형성되는 결합체인 것을 특징으로 하는 원통형 배터리 셀.
- 제4항에 있어서,상기 클림핑부의 상면에는 삽입 돌기 또는 삽입 홈이 구비되며,상기 클림핑부의 하면에는 상기 클림핑부에 형성된 삽입 돌기와 결합되는 삽입 홈 또는 상기 클림핑부에 형성된 삽입 홈과 결합되는 삽입 돌기가 구비되는 것을 특징으로 하는 원통형 배터리 셀.
- 제11항에 있어서,상기 단자부 절연 부재는,수지 재질을 포함하며, 열 융착에 의해 상기 단자부 확장 부재 및 탑 캡과 결합되는 것을 특징으로 하는 원통형 배터리 셀.
- 제1항에 있어서,상기 전극 조립체는,제1 전극 및 제2 전극을 그 사이에 분리막을 개재시킨 적층체를 일 방향으로 권취시킨 젤리롤 구조를 갖는 것을 특징으로 하는 원통형 배터리 셀.
- 제25항에 있어서,상기 제1 전극 탭은, 상기 제1 전극의 상단에 전극 활물질이 코팅되지 않음으로써 형성되는 제1 무지부이고,상기 제2 전극 탭은, 상기 제2 전극의 하단에 전극 활물질이 코팅되지 않음으로써 형성되는 제2 무지부인 것을 특징으로 하는 원통형 배터리 셀.
- 제26항에 있어서,상기 제1 전극 탭의 적어도 일부는,상기 전극 조립체의 권취 방향을 따라 분할된 복수의 제1 분절편을 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제27항에 있어서,상기 복수의 제1 분절편은,상기 전극 조립체의 반경 방향을 따라 절곡된 것을 특징으로 하는 원통형 배터리 셀.
- 제28항에 있어서,상기 원통형 배터리 셀은,상기 전극 조립체의 상부에 결합되며 상기 탑 캡과 전기적으로 연결되는 제1 집전 플레이트를 더 포함하고,상기 제1 집전 플레이트는,상기 복수의 제1 분절편의 절곡에 의해 형성되는 결합 면 상에 결합되는 것을 특징으로 하는 원통형 배터리 셀.
- 제29항에 있어서,상기 복수의 제1 분절편은 여러 겹으로 중첩되고,상기 제1 전극 탭은, 상기 복수의 제1 분절편의 중첩 레이어 수가 상기 전극 조립체의 반경 방향을 따라 일정하게 유지되는 용접 타겟 영역을 포함하며,상기 제1 집전 플레이트는, 상기 용접 타겟 영역 내에서 상기 제1 전극 탭과 결합되는 것을 특징으로 하는 원통형 배터리 셀.
- 제26항에 있어서,상기 제2 전극 탭의 적어도 일부는,상기 전극 조립체의 권취 방향을 따라 분할된 복수의 제2 분절편을 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제31항에 있어서,상기 복수의 제2 분절편은,상기 전극 조립체의 반경 방향을 따라 절곡된 것을 특징으로 하는 원통형 배터리 셀.
- 제32항에 있어서,상기 원통형 배터리 셀은,상기 전극 조립체의 하부에 결합되며 상기 전지 캔과 전기적으로 연결되는 제2 집전 플레이트를 더 포함하고,상기 제2 집전 플레이트는,상기 복수의 제2 분절편의 절곡에 의해 형성되는 결합 면 상에 결합되는 것을 특징으로 하는 원통형 배터리 셀.
- 제33항에 있어서,상기 복수의 제2 분절편은 여러 겹으로 중첩되고,상기 제2 전극 탭은, 상기 복수의 제2 분절편의 중첩 레이어 수가 상기 전극 조립체의 반경 방향을 따라 일정하게 유지되는 용접 타겟 영역을 포함하며,상기 제2 집전 플레이트는, 상기 용접 타겟 영역 내에서 상기 제2 전극 탭과 결합되는 것을 특징으로 하는 원통형 배터리 셀.
- 제1항에 있어서,상기 원통형 배터리 셀은,상기 전극 조립체의 상부에 결합되며 상기 탑 캡과 전기적으로 연결되는 제1 집전 플레이트를 더 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제35항에 있어서,상기 제1 집전 플레이트는,그 중심부로부터 방사상으로 연장되는 복수의 탭 결합부를 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제36항에 있어서,상기 제1 집전 플레이트는,서로 인접한 탭 결합부 사이에 구비되며 상기 제1 집전 플레이트와 상기 탑 캡 사이를 전기적으로 연결하는 리드를 더 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제35항에 있어서,상기 전지 캔은, 그 외주면 둘레를 따라 압입된 형태를 갖는 비딩부를 구비하며,상기 제1 집전 플레이트는, 상기 전극 조립체와 비딩부 사이에 위치하는 것을 특징으로 하는 원통형 배터리 셀.
- 제38항에 있어서,상기 제1 집전 플레이트의 최대 외경은,상기 비딩부가 형성된 높이에서의 상기 전지 캔의 내경과 같거나 그보다 더 작은 것을 특징으로 하는 원통형 배터리 셀.
- 제35항에 있어서,상기 제1 집전 플레이트는,상기 전극 조립체의 권취 중심부에 형성되는 홀과 대응되는 위치에 형성되는 제1 집전판 홀을 구비하는 것을 특징으로 하는 원통형 배터리 셀.
- 제40항에 있어서,상기 제1 집전판 홀의 직경은,상기 전극 조립체의 권취 중심부에 형성되는 홀의 직경과 같거나 이보다 더 큰 것을 특징으로 하는 원통형 배터리 셀.
- 제1항에 있어서,상기 전지 캔은,상기 개구부의 반대편인 하단에 형성되는 폐쇄부를 구비하고,상기 폐쇄부에는 상기 전지 캔의 내압이 기준치 이상으로 증가하면 파단되는 벤팅부가 구비되는 것을 특징으로 하는 원통형 배터리 셀.
- 제42항에 있어서,상기 벤팅부는, 상기 폐쇄부의 주변 영역과 비교하여 더 얇은 두께를 갖도록 구성되는 것을 특징으로 하는 원통형 배터리 셀.
- 제43항에 있어서,상기 벤팅부는,상기 폐쇄부의 일 면 또는 양 면에 노칭을 하여 형성되는 것을 특징으로 하는 원통형 배터리 셀.
- 제38항에 있어서,상기 원통형 배터리 셀은,상기 비딩부와 상기 제1 집전 플레이트 사이에 배치되는 인슐레이터를 더 포함하는 것을 특징으로 하는 원통형 배터리 셀.
- 제45항에 있어서,상기 인슐레이터는,상기 전극 조립체의 제1 전극 탭과 상기 전지 캔의 내주면 사이에 개재되는 것을 특징으로 하는 원통형 배터리 셀.
- 제1항 내지 제46항 중 어느 한 항에 따른 원통형 배터리 셀을 복수 개 포함하는 배터리 팩.
- 제47항에 있어서,복수의 상기 원통형 배터리 셀은 소정 수의 열로 배열되고,각각의 상기 원통형 배터리 셀에 구비된 상기 탑 캡과 상기 단자부 확장 부재는 상부를 향하도록 배치되는 것을 특징으로 하는 배터리 팩.
- 제48항에 있어서,상기 배터리 팩은, 복수의 상기 원통형 배터리 셀을 직렬 및 병렬로 연결하는 복수의 버스바를 포함하고,상기 복수의 버스바는, 상기 복수의 원통형 배터리 셀들의 상부에 배치되고,각각의 상기 버스바는,인접하는 원통형 배터리 셀들의 셀 단자들 사이에서 연장되는 바디부;상기 바디부의 일측 방향으로 연장되어 상기 일측 방향에 위치한 원통형 배터리 셀의 상기 탑 캡에 전기적으로 결합하는 복수의 제1 버스바 단자; 및상기 바디부의 타측 방향으로 연장되어 상기 타측 방향에 위치한 원통형 배터리 셀의 전지 캔의 상기 단자부 확장 부재에 전기적으로 결합하는 복수의 제2 버스바 단자;를 포함하는 것을 특징으로 하는 배터리 팩.
- 제47항에 따른 배터리 팩을 적어도 하나 포함하는 자동차.
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| JP2023502640A JP7662762B2 (ja) | 2020-12-29 | 2021-12-24 | 円筒形バッテリーセル、それを含むバッテリーパック及び自動車 |
| CA3202295A CA3202295A1 (en) | 2020-12-29 | 2021-12-24 | Cylindrical battery cell, and battery pack and vehicle comprising same |
| EP21915708.8A EP4175030A4 (en) | 2020-12-29 | 2021-12-24 | CYLINDRICAL BATTERY ELEMENT, AND BATTERY PACK AND VEHICLE COMPRISING SAME |
| US18/031,847 US12100847B2 (en) | 2020-12-29 | 2021-12-24 | Cylindrical battery cell, and battery pack and vehicle comprising same |
| CN202180056863.9A CN116034516A (zh) | 2020-12-29 | 2021-12-24 | 圆柱形电池单元、以及包括其的电池组和车辆 |
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| PCT/KR2021/019897 Ceased WO2022145910A1 (ko) | 2020-12-29 | 2021-12-24 | 원통형 배터리 셀, 그리고 이를 포함하는 배터리 팩 및 자동차 |
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| Country | Link |
|---|---|
| US (1) | US12100847B2 (ko) |
| EP (1) | EP4175030A4 (ko) |
| JP (1) | JP7662762B2 (ko) |
| KR (1) | KR20220095139A (ko) |
| CN (1) | CN116034516A (ko) |
| CA (1) | CA3202295A1 (ko) |
| DE (1) | DE202021004405U1 (ko) |
| WO (1) | WO2022145910A1 (ko) |
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| JP2025512549A (ja) * | 2022-07-19 | 2025-04-17 | エルジー エナジー ソリューション リミテッド | 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 |
| JP2025522806A (ja) * | 2022-07-19 | 2025-07-17 | エルジー エナジー ソリューション リミテッド | バッテリー、それを含むバッテリーパック及び自動車 |
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| JP7617267B2 (ja) | 2021-02-23 | 2025-01-17 | エルジー エナジー ソリューション リミテッド | 二次電池、電池パック、および自動車 |
| US20250385294A1 (en) * | 2022-07-19 | 2025-12-18 | Lg Energy Solution, Ltd. | Electrode assembly structure, and cylindrical battery, battery pack and vehicle comprising the same |
| WO2024019551A1 (ko) * | 2022-07-19 | 2024-01-25 | 주식회사 엘지에너지솔루션 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
| EP4496111A4 (en) * | 2022-07-19 | 2025-11-05 | Lg Energy Solution Ltd | BATTERY, AND BATTERY BLOCK AND VEHICLE INCLUDING THEREON |
| US20250372798A1 (en) * | 2022-07-20 | 2025-12-04 | Lg Energy Solution, Ltd. | Cell Assembly, and Battery Pack and Vehicle Including the Same |
| KR20240047837A (ko) | 2022-10-05 | 2024-04-12 | 주식회사 엘지에너지솔루션 | 원통형 배터리 셀 |
| US20260011831A1 (en) * | 2022-10-27 | 2026-01-08 | Lg Energy Solution, Ltd. | Welding Structure of Battery Can and Cap, and Battery Cell Having the Same Applied Thereto |
| KR102736954B1 (ko) * | 2022-10-27 | 2024-12-02 | 주식회사 엘지에너지솔루션 | 전지 캔과 캡의 용접 구조 및 이를 적용한 배터리 셀 |
| WO2024143253A1 (ja) * | 2022-12-26 | 2024-07-04 | パナソニックエナジー株式会社 | 円筒形電池 |
| WO2024164308A1 (zh) * | 2023-02-10 | 2024-08-15 | 宁德时代新能源科技股份有限公司 | 电极组件、电池单体、电池及用电装置 |
| DE102023105811A1 (de) * | 2023-03-09 | 2024-09-12 | Bayerische Motoren Werke Aktiengesellschaft | Elektrochemische Speicherzelle, Fortbewegungsmittel und Verfahren zur Herstellung einer Komponente einer elektrochemischen Speicherzelle |
| KR20250174293A (ko) * | 2024-06-05 | 2025-12-12 | 삼성에스디아이 주식회사 | 이차 전지 |
| WO2025258848A1 (ko) * | 2024-06-13 | 2025-12-18 | 주식회사 엘지에너지솔루션 | 원통형 배터리 셀 |
| KR20260027409A (ko) * | 2024-08-20 | 2026-03-03 | 삼성에스디아이 주식회사 | 배터리 팩 |
| KR20260031285A (ko) * | 2024-08-28 | 2026-03-09 | 삼성에스디아이 주식회사 | 이차 전지 및 이를 포함하는 전지 팩 |
| CN119725915B (zh) * | 2025-03-03 | 2026-03-03 | 宁德时代新能源科技股份有限公司 | 电池单体、电池装置和用电设备 |
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- 2021-12-24 WO PCT/KR2021/019897 patent/WO2022145910A1/ko not_active Ceased
- 2021-12-24 DE DE202021004405.1U patent/DE202021004405U1/de active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2025512549A (ja) * | 2022-07-19 | 2025-04-17 | エルジー エナジー ソリューション リミテッド | 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 |
| JP2025522806A (ja) * | 2022-07-19 | 2025-07-17 | エルジー エナジー ソリューション リミテッド | バッテリー、それを含むバッテリーパック及び自動車 |
| EP4517989A4 (en) * | 2022-07-19 | 2025-07-30 | Lg Energy Solution Ltd | Battery, and battery pack and vehicle comprising same |
| EP4539244A4 (en) * | 2022-07-19 | 2025-10-15 | Lg Energy Solution Ltd | ELECTRODE ASSEMBLY, BATTERY AND BATTERY PACK AND VEHICLE THEREOF |
| JP7842247B2 (ja) | 2022-07-19 | 2026-04-07 | エルジー エナジー ソリューション リミテッド | 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 |
| WO2024048246A1 (ja) * | 2022-08-31 | 2024-03-07 | パナソニックIpマネジメント株式会社 | 蓄電装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023537846A (ja) | 2023-09-06 |
| JP7662762B2 (ja) | 2025-04-15 |
| CN116034516A (zh) | 2023-04-28 |
| EP4175030A4 (en) | 2025-01-22 |
| DE202021004405U1 (de) | 2024-04-16 |
| US12100847B2 (en) | 2024-09-24 |
| KR20220095139A (ko) | 2022-07-06 |
| EP4175030A1 (en) | 2023-05-03 |
| CA3202295A1 (en) | 2022-07-07 |
| US20230387513A1 (en) | 2023-11-30 |
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