WO2024106989A1 - 전극 조립체 및 이를 포함하는 배터리, 그리고 이러한 배터리를 포함하는 배터리 팩 및 자동차 - Google Patents
전극 조립체 및 이를 포함하는 배터리, 그리고 이러한 배터리를 포함하는 배터리 팩 및 자동차 Download PDFInfo
- Publication number
- WO2024106989A1 WO2024106989A1 PCT/KR2023/018495 KR2023018495W WO2024106989A1 WO 2024106989 A1 WO2024106989 A1 WO 2024106989A1 KR 2023018495 W KR2023018495 W KR 2023018495W WO 2024106989 A1 WO2024106989 A1 WO 2024106989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- insulating layer
- electrode assembly
- area
- notching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
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
- H01M10/04—Construction or manufacture in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
- B23K26/364—Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to an electrode assembly and a battery containing the same, and to a battery pack and a vehicle containing such a battery.
- a jelly roll type electrode assembly can be applied, with the positive and negative electrode tabs extending up and down along the height direction of the battery can.
- the present invention was created in consideration of the above-mentioned problems, and its purpose is to reduce the internal resistance of the battery.
- one object of the present invention is to effectively prevent internal short circuit of the battery.
- An electrode assembly according to an embodiment of the present invention for solving the above-described problem is an electrode assembly having a structure in which a laminate including a first electrode and a second electrode and a separator interposed between them is wound.
- the first electrode and the second electrode include an uncoated area on a long side end that is not coated with an active material; And a holding portion coated with the active material layer; It includes, on the first surface of the first electrode and the second surface on the opposite side, a first insulating layer and a first insulating layer extending a predetermined length from an area including a boundary of the holding portion and the uncoated portion toward an end of the uncoated portion.
- Two insulating layers may each be provided.
- the uncoated portion may include a plurality of uncoated portion notching valleys formed along the winding direction, and may include a plurality of segment pieces formed to be spaced apart from each other along the winding direction with each of the plurality of uncoated portion notching valleys interposed therebetween. It can be provided.
- Each of the first insulating layer and the second insulating layer may have an insulating layer notching valley formed at a depth corresponding to a position corresponding to the non-coated region notching valley.
- the edge cut surface of each of the plurality of segment pieces may be exposed to the outside of the first insulating layer on the first surface of the first electrode, and On the second surface, edge cut surfaces of each of the plurality of segment pieces may not be exposed to the outside of the second insulating layer.
- the first surface of the first electrode may be a surface facing the outside of the electrode assembly, and the second surface of the first electrode may be a surface facing the inside of the electrode assembly.
- the edge cut surface of the laminate including the first insulating layer, the segment piece, and the second insulating layer has an area of the second insulating layer that is that of the first insulating layer. It can have an inclined shape so that it is wider than the area.
- the plurality of segment pieces may be bent along the radial direction of the electrode assembly.
- Each of the first insulating layer and the second insulating layer may have an insulating layer notching valley formed at a depth corresponding to a position corresponding to the non-coated region notching valley.
- the edge cut surface of each of the plurality of segment pieces may be exposed to the outside of the first insulating layer on the first surface of the first electrode, and On the second surface, the edge cut surface of each of the plurality of segment pieces may not be exposed to the outside of the second insulating layer.
- the first surface of the first electrode may be a surface located in a direction opposite to the bending direction of the segment, and the second surface of the first electrode may be a surface located in a bending direction of the segment.
- the edge cross section of the laminate including the first insulating layer, the segment piece, and the second insulating layer is such that the area of the second insulating layer is the area of the first insulating layer. It can have an inclined shape to make it wider.
- a method of manufacturing an electrode assembly according to an embodiment of the present invention for solving the above-described problem includes an electrode preparation step of providing a first electrode having an insulating layer on both sides; A segment forming step of forming a plurality of segment segments by irradiating a laser on the first surface of the first electrode to notch the uncoated portion of the first electrode; A laminate preparation step of forming a laminate including the first electrode; and a winding step of winding the laminate to form an electrode assembly; may include.
- the electrode assembly manufacturing method may include the step of directing the first surface of the first electrode on which the laser irradiation is performed toward an outer direction of the electrode assembly.
- the electrode assembly manufacturing method may include bending the plurality of segment pieces along the radial direction of the electrode assembly.
- the winding step may include positioning the first surface of the first electrode on which the laser irradiation is performed in a direction opposite to the bending direction of the segment piece.
- a battery according to an embodiment of the present invention for solving the above problems may include an electrode assembly of the present invention and a housing for accommodating the electrode assembly.
- a battery pack according to an embodiment of the present invention to solve the above-described problem may include a battery according to an embodiment of the present invention.
- a vehicle according to an embodiment of the present invention to solve the above-described problem may include a battery pack according to an embodiment of the present invention.
- the internal resistance of the battery can be greatly reduced, thereby providing a battery that is advantageous in rapid charging and rapid discharging.
- the present invention can effectively prevent internal short circuit of the battery, thereby greatly improving the safety of secondary battery use.
- Figure 1 is a diagram showing a jelly roll having a structure in which a laminate including a first electrode, a second electrode, and a separator interposed between them is wound for manufacturing an electrode assembly according to an embodiment of the present invention.
- Figure 2 is a diagram showing a portion of a longitudinal cross-section of an electrode assembly according to an embodiment of the present invention.
- Figure 3 is a diagram showing a first electrode and an insulating layer applied to an electrode assembly according to an embodiment of the present invention.
- FIG. 4 is a diagram showing the cross-sectional shape of the laminate cut by laser notching in the laminate including the first electrode shown in FIG. 3 and an insulating layer provided on both sides thereof.
- Figure 5 is a perspective view showing an electrode assembly according to another embodiment of the present invention.
- FIG. 6 is a view showing a portion of a longitudinal cross section of the electrode assembly shown in FIG. 5.
- Figure 7 is a diagram showing a battery according to an embodiment of the present invention.
- FIG. 8 is a cross-sectional view showing the internal structure of the battery shown in FIG. 7.
- Figure 9 is a diagram showing a battery pack according to an embodiment of the present invention.
- Figure 10 is a diagram showing a car according to an embodiment of the present invention.
- FIG. 1 is a diagram showing a jelly roll having a structure in which a laminate including a first electrode, a second electrode, and a separator interposed between them is wound for manufacturing an electrode assembly according to an embodiment of the present invention
- FIG. 3 is a diagram showing a first electrode and an insulating layer applied to an electrode assembly according to an embodiment of the present invention
- FIG. 4 includes the first electrode shown in FIG. 3 and an insulating layer provided on both sides thereof. This is a diagram showing the shape of the cross section of the laminate cut by laser notching.
- the electrode assembly 10 may include a first electrode 11 and a second electrode 12 and a separator 13 interposed between them. there is.
- the first electrode 11 may be an anode.
- the second electrode 12 may be a cathode.
- the electrode assembly 10 may have a structure in which a laminate including the first electrode 11, the second electrode 12, and the separator 13 is wound. That is, the electrode assembly 10 may be a jelly roll type electrode assembly. Meanwhile, an additional separator 13 may be further provided on the outer peripheral surface of the electrode assembly 10 for insulation.
- Each of the first electrode 11 and the second electrode 12 may include uncoated portions 11a and 12a that are not coated with the electrode active material and holding portions 11b and 12b that are coated with the electrode active material.
- the uncoated areas 11a and 12a may correspond to areas where the active material layer is not coated at long side ends of each of the first electrode 11 and the second electrode 12.
- the holding portions 11b and 12b are areas excluding the uncoated portions 11a and 12a and may be areas coated with an active material layer.
- the uncoated portions 11a and 12a may themselves be used as electrode tabs.
- the first electrode 11 and the second electrode 12 are arranged so that the uncoated area 11a of the first electrode 11 and the uncoated area 12a of the second electrode 12 are located on opposite sides. You can.
- the uncoated portion 11a of the first electrode 11 may extend upward of the electrode assembly 10
- the uncoated portion 12a of the second electrode 12 may extend upward. may extend downward of the electrode assembly 10.
- the holding parts 11b and 12b may include a sliding part in which the thickness of the hole material layer is reduced compared to the central area of the holding parts 11b and 12b.
- each of the first electrode 11 and the second electrode 12 may have a sliding portion, which is an area where the thickness of the active material layer is reduced, at one end or the other end.
- the sliding portion may be formed by a sliding phenomenon that occurs near the boundary between the holding portion and the uncoated portion when applying the electrode active material on the electrode current collector.
- the sliding phenomenon refers to a phenomenon in which less electrode active material is applied in the slurry application boundary area than in areas outside the slurry application boundary area due to the spread of the slurry containing the electrode active material, so that the slurry in the application boundary area has a roughly inclined shape. it means. Due to this sliding phenomenon, a sliding portion having a shape inclined substantially downward along the direction from the holding portions 11b and 12b toward the uncoated portions 11a and 12a may be formed at the edges of the holding portions 11b and 12b.
- the sliding phenomenon that occurs during the application process of the active material may become more severe during the drying process of the active material. That is, when the electrodes 11 and 12 on which sliding portions have already been formed are dried as a whole, the solvent contained in the slurry evaporates and the slurry volume decreases, thereby causing a sliding phenomenon near the boundary between the area where the electrode active material is applied and the area where the electrode active material is not applied. This could get worse.
- the sliding portion may be formed in a boundary area between the holding portions 11b and 12b and the uncoated portions 11a and 12a.
- the sliding part may be provided at one end of the first electrode 11 and the other end of the second electrode 12, respectively. That is, the sliding portion of the holding portion 11b provided on the first electrode 11 and the sliding portion of the holding portion 12b provided on the second electrode 12 may be provided in opposite directions.
- the sliding portion of the first electrode 11 may be formed upward along the winding axis direction (direction parallel to the Z-axis), and the sliding portion of the second electrode 12 may be formed in the opposite direction. It may be formed downward along the direction, that is, the winding axis direction.
- the length along the winding axis direction of the holding part 11b provided on the first electrode 11 may be shorter than the length along the winding axis direction of the holding part 12b provided on the second electrode 12. there is. Additionally, the holding portion 11b provided on the first electrode 11 may be located further inside along the winding axis direction than the holding portion 12b provided on the second electrode 12. For example, referring to FIG. 2, the winding axis of the holding portion 12b provided on the second electrode 12 is greater than the length along the winding axis direction of the holding portion 11b provided on the first electrode 11. The length along the direction can be made larger.
- the length along the winding axis direction of the holding portion 11b provided on the first electrode 11 is the length along the winding axis direction of the region excluding the sliding portion among the holding portions 12b provided on the second electrode 12. It can be formed shorter than the length. This structure is intended to prevent lithium metal from precipitating when the NP ratio of the anode/cathode is reduced below 100%.
- the holding portions 11b and 12b may not protrude further outward than the separator 13 along the winding axis direction. That is, if the holding portions 11b and 12b protrude further outward than the separator 13 along the winding axis direction, the possibility of contact between the first electrode 11 and the second electrode 12 may increase. If this happens, an internal short circuit may occur in the contact area, which may increase the risk of ignition. Therefore, it may be advantageous for the holding parts 11b and 12b not to protrude outward along the winding axis direction compared to the separator 13. That is, it may be advantageous for the holding parts 11b and 12b to be located inside the separator 13.
- an insulating layer 14 may be provided on a portion of the first electrode 11.
- the insulating layer 14 may include a first insulating layer 14a and a second insulating layer 14b.
- a boundary (a portion indicated by a dotted line) between the holding portions 11b and 12b and the uncoated portions 11a and 12a is formed.
- a first insulating layer 14a and a second insulating layer 14b extending a predetermined length from the included area toward the ends of the uncoated portions 11a and 12a may be provided.
- the insulating layer 14 can reduce the possibility of contact between the first electrode 11 and the second electrode 12.
- the insulating layer 14 may be configured to cover at least a portion of the uncoated portion 11a and at least a portion of the holding portion 11b of the first electrode 11 at the same time.
- the insulating layer 14 may be configured to effectively prevent electrical contact between the uncoated portion 11a of the first electrode 11 and the holding portion 12b of the second electrode 12.
- the insulating layer 14 may be provided in an area of the first electrode 11 that is likely to face the holding portion 12b provided in the second electrode 12.
- one end of the insulating layer 14 along the winding axis direction may be located at the same height or further outside than one end of the separator 13 along the winding axis direction.
- one end of the insulating layer 14 along the winding axis direction may be located at the same height as one end of the separator 13 along the winding axis direction.
- the separator 13 may protrude along the winding axis direction between the first electrode 11 and the second electrode 12 at the same height as or higher than the end of the second electrode 12, and thus the The possibility of electrical contact between the first electrode 11 and the second electrode 12 can be reduced.
- meandering of the electrodes 11 and 12 may occur during the winding process for manufacturing the electrode assembly 10, and damage to the separator 13 may occur during the manufacturing/use process of the secondary battery.
- contact between the first electrode 11 and the second electrode 12 may occur.
- the insulating layer 14 provided on the first electrode 11 is formed at least on one side along the winding axis direction of the separator 13. It may be advantageous to extend to the same height as the end or further outward.
- the insulating layer 14 covers the entire uncoated portion 11a provided in the first electrode 11, the first electrode 11 cannot function as an electrode tab, so the insulating layer 14 ) needs to be configured to cover only a portion of the uncoated portion 11a provided on the first electrode 11. That is, the uncoated portion 11a may be configured to protrude further to the outside of the insulating layer 14.
- the insulating layer 14 may be an insulating coating layer or an insulating tape provided on the boundary area between the uncoated portion 11a and the holding portion 11b.
- the form of the insulating layer 14 is not limited to this, and any form that can be attached to the first electrode 11 while ensuring insulating performance can be used in the present invention.
- the insulating layer 14 may include, for example, an oil-based SBR binder and alumina oxide to ensure insulating performance.
- the insulating layer 14 may simultaneously cover at least a portion of the uncoated portion 11a and at least a portion of the holding portion 11b.
- the insulating layer 14 may be provided on the boundary area between the holding portion 11b and the uncoated portion 11a.
- the insulating layer 14 may cover at least a portion of the sliding portion.
- the insulating layer 14 is not present, there is a possibility that an internal short circuit may occur due to contact of the first electrode 11 with the second electrode 12, so that the first electrode 11 and the second electrode 12 It is preferable that the insulating layer 14 extends to a position where electrical contact does not occur.
- the insulating layer 14 covers a portion of the holding portion 11b provided on the first electrode 11, capacity loss of the battery occurs, so there is a need to minimize the cover length of the holding portion of the insulating layer 14. there is.
- the holding portion 11b provided on the first electrode 11 may contact the second electrode 12, in order to prevent this, the insulating layer 14 is provided on the first electrode 11. It may be configured to cover at least a portion of the holding portion 11b.
- the uncoated area 11a of the first electrode 11 is The insulating layer 14 may be formed and the insulating layer 14 may not be applied on the uncoated portion 12a of the second electrode 12. This is because the risk is greatest especially when contact occurs between the anode uncoated portion and the cathode holding portion. Differences in risk in various cases where contact between the anode and the cathode occur will be described in detail later with reference to FIG. 10. Meanwhile, the present invention does not exclude the case where the insulating layer 14 is provided on the uncoated portion 12a of the second electrode 12.
- the uncoated portion 11a may include a plurality of uncoated portion notching valleys formed along the winding direction of the electrode assembly 10.
- This uncoated region notching valley may be formed by cutting and removing a portion of the uncoated region 11a by laser notching.
- the uncoated region 11a may include a plurality of segment pieces F formed to be spaced apart from each other along the winding direction of the electrode 11 with each of the plurality of uncoated region notched valleys interposed therebetween. Meanwhile, this segment F may also be formed on the uncoated portion 12a of the second electrode 12.
- Each of the first insulating layer 14a and the second insulating layer 14b may have an insulating layer notching valley formed at a depth corresponding to a position corresponding to the non-coated region notching valley. That is, through a process of removing a part of the uncoated area 11a through notching of the uncoated area 11a to form the segment piece F, the insulating layer 14 covering a part of the uncoated area 11a is formed. Some areas of the insulating layer 14 may also be removed by notching together.
- an edge cutting surface (E) of each of the plurality of segment pieces (F) is formed on the first surface (A) of the first electrode 11. It may be exposed to the outside of the first insulating layer 14a.
- the edge cut surface E of each of the plurality of segment pieces F may not be exposed to the outside of the second insulating layer 14b. That is, in the area where the insulating layer notching valley is formed, the edge cut surface E of the laminate including the first insulating layer 14a, the segment F, and the second insulating layer 14b is the second insulating layer. (14b) may have an inclined shape so that the area is larger than the area of the first insulating layer (14a).
- the width of the laser irradiated for notching gradually decreases from the light source to the irradiation point.
- the cutting surface E formed on the laminate of the uncoated region 11a and the insulating layer 14 by laser notching is not parallel to the stacking direction but is inclined at a predetermined angle with respect to the stacking direction. It can have a shape.
- the first surface A of the first electrode 11 may be a surface facing the outside of the electrode assembly 10 of the segment F.
- the second surface B of the first electrode 11 may be a surface facing the inside of the electrode assembly 10.
- FIG. 5 is a perspective view showing an electrode assembly according to another embodiment of the present invention
- FIG. 6 is a view showing a portion of a longitudinal cross section of the electrode assembly shown in FIG. 5.
- the electrode assembly 10 includes a plurality of segment pieces F formed on the uncoated portion 11a. It may have a structure bent along the radial direction. The segmental pieces F bent in this way can overlap each other to form a plurality of layers.
- each of the first insulating layer 14a and the second insulating layer 14b may be provided with an insulating layer notching valley formed at a depth corresponding to a position corresponding to the non-coated region notching valley.
- the edge cutting surface E of each of the plurality of segment pieces F is on the outer side of the first insulating layer 14a. may be exposed, and on the second surface (B) of the first electrode 11, the edge cut surface (E) of each of the plurality of segment pieces (F) may not be exposed to the outside of the second insulating layer (14b).
- the first surface (A) of the first electrode 11 may be a surface located in a direction opposite to the bending direction of the segmental piece (F), and the second surface (B) of the first electrode 11 may be a segmental piece ( It may be a surface located in the bending direction of F).
- the second surface (B) faces the inside of the electrode assembly 10. It may be located in a direction where the first surface A faces the outside of the electrode assembly 10.
- the edge cross section of the laminate including the first insulating layer 14a, the segment F, and the second insulating layer 14b is the area of the second insulating layer 14b. It may have an inclined shape so as to be larger than the area of the first insulating layer 14a.
- the electrode assembly 10 of the present invention has the first surface A located in the direction in which the laser irradiation for forming the segment F is performed on the first electrode 11 of the electrode assembly 10.
- the electrode assembly 10 of the present invention has the first surface A located in the direction in which the laser irradiation for forming the segment F is performed on the first electrode 11 of the electrode assembly 10.
- FIG. 7 is a diagram showing a battery according to an embodiment of the present invention
- FIG. 8 is a cross-sectional view showing the internal structure of the battery shown in FIG. 7.
- the battery 1 may include the electrode assembly 10 according to the present invention described above.
- the battery 1 may be, for example, a cylindrical battery.
- the battery 1 may include an electrode assembly 10, a housing 20, a cap 30, and a terminal 40.
- the battery 1 additionally includes a first current collector 50 and/or an insulator 60 and/or an insulating gasket 70 and/or a second current collector 80 and/or a sealing device.
- a gasket 90 may be further included.
- the housing 20 may be a substantially cylindrical container with an opening formed at the bottom.
- the housing 20 may include a conductive material, such as metal.
- the housing 20 may include aluminum, for example.
- the bottom part of the housing 20 provided with an open portion will be referred to as an open end.
- the side (outer peripheral surface) and top surface of the housing 20 may be formed integrally.
- the upper surface (a surface parallel to the X-Y plane) of the housing 20 may have a substantially flat shape.
- the upper surface located opposite the open end will be referred to as the closed end.
- the housing 20 accommodates the electrode assembly 10 through an opening formed at the bottom, and can also accommodate the electrolyte.
- the housing 20 may be electrically connected to the electrode assembly 10.
- the housing 20 may be electrically connected to one of the first electrode 11 and the second electrode 12.
- the housing 20 may be electrically connected to the second electrode 12 of the electrode assembly 10.
- the housing 20 may have the same polarity as the second electrode 12.
- the housing 20 may include a beading portion 21 and/or a crimping portion 22 formed at its bottom.
- the beading portion 21 may be formed at the lower portion of the electrode assembly 10.
- the beading portion 21 may be formed by press fitting around the outer peripheral surface of the housing 20.
- the beading portion 21 may prevent the electrode assembly 10, which may have a size approximately corresponding to the width of the housing 20, from coming out through the opening formed at the bottom of the housing 20.
- the beading portion 21 may function as a support portion on which the cap 30 is seated.
- the crimping part 22 may be formed below the beading part 21.
- the crimping portion 22 may have an extended and bent shape to cover the outer peripheral surface of the cap 30 disposed below the beading portion 21 and a portion of the lower surface of the cap 30.
- the cap 30 may include, for example, a metal material to ensure rigidity.
- the cap 30 may cover the opening formed at the bottom of the housing 20.
- the cap 30 may form the lower surface of the battery 1.
- the cap 30 may not have polarity even if it is made of a conductive metal material. Not having polarity may mean that the cap 30 is electrically insulated from the housing 20 and the terminal 40. Accordingly, the cap 30 may not function as a positive or negative terminal.
- the cap 30 does not need to be electrically connected to the electrode assembly 10 and the housing 20, and its material does not necessarily have to be metal.
- the cap 30 When the housing 20 of the present invention is provided with a beading portion 21, the cap 30 can be seated on the beading portion 21 formed in the housing 20. Additionally, when the housing 20 of the present invention is provided with a crimping portion 22, the cap 30 can be fixed by the crimping portion 22. A sealing gasket 90 may be interposed between the cap 30 and the crimping portion 22 of the housing 20 to ensure airtightness of the housing 20.
- the terminal 40 may be electrically connected to either the first electrode 11 or the second electrode 12.
- the terminal 40 may be configured to have an opposite polarity to that of the housing 20 .
- the terminal 40 may be electrically connected to the first electrode 11.
- the terminal 40 may be exposed to the outside of the housing 20.
- the terminal 40 may include a conductive metal material.
- the terminal 40 may, for example, pass through approximately the center of the closed end formed at the top of the housing 20. A portion of the terminal 40 may be exposed to the top of the housing 20 and the remaining portion may be located inside the housing 20 .
- the terminal 40 can be fixed on the inner surface of the closed end of the housing 20, for example by riveting.
- the terminal 40 may pass through the insulator 60 and be coupled to the uncoated portion 11a provided on the first current collector 50 or the first electrode 11.
- the terminal 40 may have a first polarity. Accordingly, the terminal 40 can function as a first electrode terminal in the battery 1 of the present invention.
- the terminal 40 When the terminal 40 has a first polarity, the terminal 40 may be insulated from the housing 20 having a second polarity. Insulation can be achieved by interposing an insulating gasket 70 between the terminal 40 and the housing 20.
- the first current collector 50 may be coupled to the upper part of the electrode assembly 10.
- the first current collector 50 may be coupled to the uncoated portion 11a provided on the first electrode 11 at the top of the electrode assembly 10.
- the first current collector 50 may include a conductive metal material.
- the first current collector 50 may be coupled to the end of the uncoated portion 11a provided on the first electrode 11.
- the first current collector 50 may be coupled to a coupling surface formed by bending the end of the uncoated portion 11a provided on the first electrode 11 in a direction parallel to the first current collector 50.
- the bending direction of the uncoated portion 11a may be, for example, toward the winding center C of the electrode assembly 10.
- the insulator 60 is between the top of the electrode assembly 10 and the inner surface of the housing 20 or between the first current collector 50 coupled to the top of the electrode assembly 10 and the inner surface of the housing 20. It can be provided. The insulator 60 prevents contact between the uncoated portion 11a provided on the first electrode 11 and the housing 20 and/or contact between the first current collector 50 and the housing 20. You can.
- the insulator 60 is accommodated inside the housing 20 and may be configured to block the electrical connection between the uncoated portion 11a provided on the first electrode 11 and the housing 20. Accordingly, the insulator 60 may include a material having insulating properties.
- the insulating gasket 70 is interposed between the housing 20 and the terminal 40 to prevent the housing 20 and the terminal 40, which have opposite polarities, from contacting each other. That is, the insulating gasket 70 blocks the electrical connection between the housing 20 and the terminal 40.
- the upper surface of the housing 20, which has a substantially flat shape, can function as the second electrode terminal of the battery 1.
- the second current collector 80 may be coupled to the lower part of the electrode assembly 10.
- the second current collector 80 may be made of a conductive metal material.
- the second current collector 80 may be connected to the uncoated portion 12a provided on the second electrode 12. Additionally, the second current collector 80 may be electrically connected to the housing 20.
- the second current collector 80 may be interposed and fixed between the inner surface of the housing 20 and the sealing gasket 90. Alternatively, the second current collector 80 may be welded to the inner wall of the housing 20.
- the second current collector 80 may be coupled to a coupling surface formed by bending the end of the uncoated portion 12a provided on the second electrode 12 in a direction parallel to the second current collector 80.
- the bending direction of the uncoated portion 12a provided on the second electrode 12 may be, for example, toward the winding center C of the electrode assembly 10.
- the sealing gasket 90 may have a substantially ring shape surrounding the cap 30.
- the sealing gasket 90 can cover the lower surface, upper surface, and side surfaces of the cap 30 at the same time.
- the radial length of the portion of the sealing gasket 90 that covers the upper surface of the cap 30 is smaller than the radial length of the portion of the sealing gasket 90 that covers the lower surface of the cap 30. It can be the same. If the radial length of the part of the sealing gasket 90 that covers the upper surface of the cap 30 is too long, the sealing gasket 90 may be separated from the second current collector 80 in the sizing process of compressing the housing 20 upward and downward. ), there is a possibility that the second current collector 80 may be damaged or the housing 20 may be damaged. Accordingly, it may be advantageous to keep the radial length of the portion of the sealing gasket 90 that covers the upper surface of the cap 30 small to a certain level.
- the manufacturing method of the electrode assembly 10 of the present invention may include an electrode preparation step, a segment forming step, a laminate preparation step, and a winding step.
- the electrode preparation step may be a step of preparing a first electrode 11 provided with an insulating layer 14 on both sides.
- segment forming step a plurality of segment segments F are formed by irradiating a laser on the first surface A of the first electrode 11 and notching the uncoated portion 11a of the first electrode 11. It may be a step.
- the laminate preparation step may be a step of forming a laminate including the first electrode 11.
- the laminate may include a second electrode 12 and a separator 13.
- the winding step may be a step of forming the electrode assembly 10 by winding the prepared laminate.
- the electrode assembly manufacturing method of the present invention may include the step of directing the first surface A of the first electrode 11 on which laser irradiation is performed toward the outside of the electrode assembly 10.
- the first surface (A) on which the laser irradiation is performed is directed outward, thereby eliminating the risk of a short circuit due to the cut surface of the segmental piece (F) being exposed at the edge of the insulating layer 14 due to the laser irradiation. Or it can be minimized.
- the electrode assembly manufacturing method of the present invention may include the step of bending the plurality of segment pieces (F) in one direction along the radial direction of the electrode assembly (10).
- the winding step may include a step of positioning the first surface A of the first electrode 11 on which the laser irradiation is performed in a direction opposite to the bending direction of the segmental piece F.
- the first surface (A) on which laser irradiation is performed is positioned on the opposite side of the bending direction of the segmental piece (F), so that the cut surface of the segmental piece (F) is aligned with the edge of the insulating layer (14) by laser irradiation.
- the risk of short circuit due to exposure can be eliminated or minimized.
- Figure 9 is a diagram showing a battery pack according to an embodiment of the present invention.
- the battery pack 3 may include the battery 1 of the present invention.
- the battery pack 3 may include an assembly of a plurality of batteries 1 electrically connected to each other and a pack housing 2 accommodating the same.
- parts such as bus bars, cooling units, and external terminals for electrical connection of the batteries 1 are omitted.
- Figure 10 is a diagram showing a car according to an embodiment of the present invention.
- the vehicle 5 may include the battery pack 3 of the present invention.
- the battery pack 3 can be mounted on a car 5.
- the vehicle 5 of the present invention may be, for example, an electric vehicle, a hybrid vehicle, or a plug-in hybrid vehicle.
- a vehicle may include a four-wheeled vehicle or a two-wheeled vehicle.
- the vehicle 5 may be configured to operate by receiving power from the battery pack 3 according to an embodiment of the present invention.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
Claims (18)
- 제1 전극 및 제2 전극과 이들 사이에 개재된 분리막을 포함하는 적층체가 권취된 구조를 갖는 전극 조립체에 있어서,상기 제1 전극 및 상기 제2 전극은,장변 단부에 활물질이 코팅되지 않은 무지부; 및 상기 활물질이 코팅되어 있는 유지부; 를 포함하고,상기 제1 전극의 제1 면 및 그 반대 측인 제2 면 상에는, 상기 유지부와 상기 무지부의 경계를 포함하는 영역으로부터 상기 무지부의 단부를 향해 소정 길이 연장되는 제1 절연층 및 제2 절연층이 각각 구비되는 것을 특징으로 하는,전극 조립체.
- 제1항에 있어서,상기 무지부는,상기 전극 조립체의 권취 방향을 따라 형성되는 복수의 무지부 노칭 골을 구비하며,상기 복수의 무지부 노칭 골 각각을 사이에 두고 상기 권취 방향을 따라 상호 이격되어 형성되는 복수의 분절편을 구비하는 것을 특징으로 하는,전극 조립체.
- 제2항에 있어서,상기 제1 절연층 및 제2 절연층 각각은,상기 무지부 노칭 골과 대응되는 위치에 대응되는 깊이로 형성되는 절연층 노칭 골을 구비하는 것을 특징으로 하는,전극 조립체.
- 제3항에 있어서,상기 절연층 노칭 골이 형성된 영역에 있어서,상기 제1 전극의 상기 제1 면 상에서는 상기 복수의 분절편 각각의 가장자리 절단 면이 상기 제1 절연층의 외측으로 노출되며,상기 제1 전극의 상기 제2 면 상에서는 상기 복수의 분절편 각각의 가장자리 절단 면이 상기 제2 절연층의 외측으로 노출되지 않는 것을 특징으로 하는,전극 조립체.
- 제4항에 있어서,상기 제1 전극의 상기 제1 면은 상기 전극 조립체의 외측을 항하는 면이고,상기 제1 전극의 상기 제2 면은 상기 전극 조립체의 내측을 향하는 면인 것을 특징으로 하는,전극 조립체.
- 제3항에 있어서,상기 절연층 노칭 골이 형성된 영역에 있어서,상기 제1 절연층, 상기 분절편 및 상기 제2 절연층을 포함하는 적층체의 가장자리 절단 면은 상기 제2 절연층의 면적이 상기 제1 절연층의 면적보다 더 넓어지도록 경사진 형태를 갖는 것을 특징으로 하는,전극 조립체.
- 제2항에 있어서,상기 복수의 분절편은,상기 전극 조립체의 반경 방향을 따라 절곡되는 것을 특징으로 하는,전극 조립체.
- 제7항에 있어서,상기 제1 절연층 및 제2 절연층 각각은,상기 무지부 노칭 골과 대응되는 위치에 대응되는 깊이로 형성되는 절연층 노칭 골을 구비하는 것을 특징으로 하는,전극 조립체.
- 제8항에 있어서,상기 절연층 노칭 골이 형성된 영역에 있어서,상기 제1 전극의 상기 제1 면 상에서는 상기 복수의 분절편 각각의 가장자리 절단 면이 상기 제1 절연층의 외측으로 노출되며,상기 제1 전극의 상기 제2 면 상에서는 상기 복수의 분절편 각각의 가장자리 절단 면이 상기 제2 절연층의 외측으로 노출되지 않는 것을 특징으로 하는,전극 조립체.
- 제9항에 있어서,상기 제1 전극의 상기 제1 면은 상기 분절편의 절곡 방향과 반대 방향에 위치하는 면이고,상기 제1 전극의 상기 제2 면은 상기 분절편의 절곡 방향에 위치하는 면인 것을 특징으로 하는,전극 조립체.
- 제8항에 있어서,상기 절연층 노칭 골이 형성된 영역에 있어서,상기 제1 절연층, 상기 분절편 및 상기 제2 절연층을 포함하는 적층체의 가장자리 단면은 상기 제2 절연층의 면적이 상기 제1 절연층의 면적보다 더 넓어지도록 경사진 형태를 갖는 것을 특징으로 하는,
- 제1항 내지 제11항 중 어느 한 항에 따른 전극 조립체; 및상기 전극 조립체를 수용하는 하우징;을 포함하는 배터리.
- 제12항에 따른 배터리를 포함하는 배터리 팩.
- 제13항에 따른 배터리 팩을 포함하는 자동차.
- 양 면 상에 절연층이 구비된 제1 전극을 마련하는 전극 마련 단계;상기 제1 전극의 제1 면 상에서 레이저를 조사하여 제1 전극의 무지부를 노칭함으로써 복수의 분절편을 형성하는 분절편 형성 단계;상기 제1 전극을 포함하는 적층체를 형성하는 적층체 마련 단계; 및상기 적층체를 권취하여 전극 조립체를 형성하는 권취 단계;를 포함하는,전극 조립체 제조 방법.
- 제15항에 있어서,상기 전극 조립체 제조 방법은,레이저 조사가 이루어진 상기 제1 전극의 상기 제1 면이 상기 전극 조립체의 외측 방향을 향하도록 하는 단계를 포함하는 것을 특징으로 하는,전극 조립체 제조 방법.
- 제15항에 있어서,상기 전극 조립체 제조 방법은,상기 복수의 분절편을 상기 전극 조립체의 반경 방향을 따라 절곡시키는 단계를 포함하는 것을 특징으로 하는,전극 조립체 제조 방법.
- 제17항에 있어서,상기 권취 단계는,레이저 조사가 이루어진 상기 제1 전극의 상기 제1 면이 상기 분절편의 절곡 방향과 반대 방향에 위치하도록 하는 단계를 포함하는 것을 특징으로 하는,전극 조립체 제조 방법.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380079112.8A CN120202590A (zh) | 2022-11-16 | 2023-11-16 | 电极组件、包括其的电池及包括这种电池的电池组和车辆 |
| JP2025525837A JP2025537722A (ja) | 2022-11-16 | 2023-11-16 | 電極組立体および該電極組立体を含むバッテリー、並びに該バッテリーを含むバッテリーパックおよび自動車 |
| EP23892052.4A EP4611167A1 (en) | 2022-11-16 | 2023-11-16 | Electrode assembly, battery including same, and battery pack and automobile including such battery |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20220153750 | 2022-11-16 | ||
| KR10-2022-0153750 | 2022-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024106989A1 true WO2024106989A1 (ko) | 2024-05-23 |
Family
ID=91084941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/018495 Ceased WO2024106989A1 (ko) | 2022-11-16 | 2023-11-16 | 전극 조립체 및 이를 포함하는 배터리, 그리고 이러한 배터리를 포함하는 배터리 팩 및 자동차 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4611167A1 (ko) |
| JP (1) | JP2025537722A (ko) |
| KR (1) | KR20240075735A (ko) |
| CN (1) | CN120202590A (ko) |
| WO (1) | WO2024106989A1 (ko) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026005357A1 (ko) * | 2024-06-24 | 2026-01-02 | 주식회사 엘지에너지솔루션 | 전극 조립체, 전극 조립체를 포함하는 배터리 및 이를 포함하는 배터리 팩 및 자동차 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150043016A (ko) * | 2013-10-14 | 2015-04-22 | 주식회사 엘지화학 | 전극조립체 및 이를 포함하는 이차전지 |
| KR20160092748A (ko) * | 2015-01-28 | 2016-08-05 | 삼성에스디아이 주식회사 | 이차 전지 |
| KR20200039214A (ko) * | 2018-10-05 | 2020-04-16 | 주식회사 엘지화학 | 이차전지 |
| KR20200041625A (ko) * | 2018-10-12 | 2020-04-22 | 삼성에스디아이 주식회사 | 이차전지 |
| CN113346201A (zh) * | 2021-05-21 | 2021-09-03 | 湖北亿纬动力有限公司 | 圆柱型电池、电池模组和电池包 |
| KR20220153750A (ko) | 2021-05-12 | 2022-11-21 | 인포텍코퍼레이션 주식회사 | 세무 대리를 위한 계약체결 자동화 서비스 시스템 및 방법 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102177506B1 (ko) * | 2014-07-30 | 2020-11-11 | 삼성에스디아이 주식회사 | 이차 전지 및 그 제조 방법 |
| WO2017057012A1 (ja) * | 2015-09-28 | 2017-04-06 | 日立オートモティブシステムズ株式会社 | 非水電解液二次電池 |
| JP2017084691A (ja) * | 2015-10-30 | 2017-05-18 | 株式会社豊田自動織機 | 電極シートの製造方法、及び電極シート |
| JP6957837B2 (ja) * | 2016-04-08 | 2021-11-02 | 株式会社Gsユアサ | 蓄電素子 |
| JP6931277B2 (ja) * | 2016-08-31 | 2021-09-01 | 三洋電機株式会社 | 二次電池用電極の製造方法、及び二次電池の製造方法 |
| KR102703303B1 (ko) * | 2018-07-11 | 2024-09-05 | 삼성에스디아이 주식회사 | 이차 전지의 제조 방법 및 이를 이용한 이차 전지 |
| EP3905382B1 (en) * | 2018-12-27 | 2024-11-20 | SANYO Electric Co., Ltd. | Secondary battery |
| JP2022013174A (ja) * | 2020-07-03 | 2022-01-18 | トヨタ自動車株式会社 | 固体電池 |
| JP7225277B2 (ja) * | 2021-01-29 | 2023-02-20 | プライムプラネットエナジー&ソリューションズ株式会社 | 電極板および二次電池 |
| JP7399902B2 (ja) * | 2021-02-24 | 2023-12-18 | プライムプラネットエナジー&ソリューションズ株式会社 | 電池 |
| JP7738641B2 (ja) * | 2021-03-05 | 2025-09-12 | パナソニックエナジー株式会社 | 円筒形電池 |
-
2023
- 2023-11-16 CN CN202380079112.8A patent/CN120202590A/zh active Pending
- 2023-11-16 WO PCT/KR2023/018495 patent/WO2024106989A1/ko not_active Ceased
- 2023-11-16 JP JP2025525837A patent/JP2025537722A/ja active Pending
- 2023-11-16 KR KR1020230159551A patent/KR20240075735A/ko active Pending
- 2023-11-16 EP EP23892052.4A patent/EP4611167A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150043016A (ko) * | 2013-10-14 | 2015-04-22 | 주식회사 엘지화학 | 전극조립체 및 이를 포함하는 이차전지 |
| KR20160092748A (ko) * | 2015-01-28 | 2016-08-05 | 삼성에스디아이 주식회사 | 이차 전지 |
| KR20200039214A (ko) * | 2018-10-05 | 2020-04-16 | 주식회사 엘지화학 | 이차전지 |
| KR20200041625A (ko) * | 2018-10-12 | 2020-04-22 | 삼성에스디아이 주식회사 | 이차전지 |
| KR20220153750A (ko) | 2021-05-12 | 2022-11-21 | 인포텍코퍼레이션 주식회사 | 세무 대리를 위한 계약체결 자동화 서비스 시스템 및 방법 |
| CN113346201A (zh) * | 2021-05-21 | 2021-09-03 | 湖北亿纬动力有限公司 | 圆柱型电池、电池模组和电池包 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240075735A (ko) | 2024-05-29 |
| EP4611167A1 (en) | 2025-09-03 |
| CN120202590A (zh) | 2025-06-24 |
| JP2025537722A (ja) | 2025-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022158856A1 (ko) | 서브 셀 및 그 제조 방법, 그리고 서브 셀을 포함하는 원통형 이차전지, 배터리 팩 및 자동차 | |
| WO2023033391A1 (ko) | 원통형 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차 | |
| WO2017204458A1 (ko) | 전지 팩 | |
| WO2023018154A1 (ko) | 원통형 이차전지, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
| WO2023090940A1 (ko) | 이차 전지, 이를 포함하는 배터리 팩 및 자동차 | |
| WO2017188533A1 (ko) | 멤브레인을 갖는 이차 전지 | |
| WO2024112110A1 (ko) | 배터리 셀, 배터리 팩 및 이를 포함하는 자동차 | |
| WO2024106989A1 (ko) | 전극 조립체 및 이를 포함하는 배터리, 그리고 이러한 배터리를 포함하는 배터리 팩 및 자동차 | |
| WO2024076106A1 (ko) | 원통형 이차전지, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
| WO2024101903A1 (ko) | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 | |
| WO2025198455A1 (ko) | 이차 전지 및 그의 제조 방법 | |
| WO2018074846A1 (ko) | 이차 전지 | |
| WO2024144195A1 (ko) | 전극조립체, 및 이를 포함하는 이차 전지, 배터리 팩 및 운송 수단 | |
| WO2026095442A1 (ko) | 전극 조립체, 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차 | |
| WO2025258995A1 (ko) | 하단 냉각이 가능한 원통형 배터리 셀 | |
| WO2026084282A1 (ko) | 이차 전지 | |
| WO2024144194A1 (ko) | 전극조립체, 및 이를 포함하는 이차 전지, 배터리 팩 및 운송 수단 | |
| WO2026005579A1 (ko) | 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차 | |
| WO2026023900A1 (ko) | 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차 | |
| WO2024144185A1 (ko) | 전극 조립체용 권심 및 이를 사용하여 생산된 원통형 배터리 셀 및, 원통형 배터리 셀을 포함하는 배터리 팩 및 자동차 | |
| WO2026079948A1 (ko) | 전극 조립체, 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차 | |
| WO2025053441A1 (ko) | 배터리셀, 이의 제조방법 및 이를 포함하는 배터리조립체 | |
| WO2025206569A1 (ko) | 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차 | |
| WO2026023962A1 (ko) | 배터리, 배터리 팩 및 이를 포함하는 자동차 | |
| WO2026079861A1 (ko) | 배터리 셀, 배터리 팩 및 이를 포함하는 자동차 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23892052 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2025525837 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025525837 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380079112.8 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023892052 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2023892052 Country of ref document: EP Effective date: 20250527 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202517055477 Country of ref document: IN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380079112.8 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202517055477 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023892052 Country of ref document: EP |