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METHOD FOR REGENERATING CATHODE ACTIVE MATERIAL AND REGENERATED CATHODE ACTIVE MATERIAL MANUFACTURED THEREFROM

Resumen de: EP4715959A1

The present invention relates to a method of preparing a recycled cathode active material and a cathode active material prepared using the same. More particularly, the method of the present invention includes step (a) of heating a waste cathode in which a cathode active material layer is formed on a current collector to thermally decompose a binder and a conductive material in the active material layer, separate the current collector from the cathode active material layer, and recover a cathode active material in the active material layer; step (b) of adding a lithium precursor to the recovered cathode active material and performing annealing at 400 to 1000 °C for 8 to 12 hours; and step (c) of washing the annealed cathode active material with a washing solution.

BATTERY CELL ASSEMBLY AND BATTERY PACK COMPRISING SAME

Resumen de: EP4715958A1

Embodiments provide a battery cell assembly. The battery cell assembly includes a plurality of battery cells, first and second cross-beams spaced apart from each other with the plurality of battery cells between the first and second cross-beams, a second circuit assembly including an integrated circuit coupled to the plurality of battery cells and configured to measure voltages of the plurality of battery cells, a first temperature sensor spaced apart from the plurality of battery cells while in contact with the first cross-beam, and a second temperature sensor spaced apart from the plurality of battery cells while in contact with the second cross-beam.

BATTERY DIAGNOSIS APPARATUS, BATTERY DIAGNOSIS METHOD, AND BATTERY DIAGNOSIS SYSTEM

Resumen de: EP4715409A1

According to some embodiments disclosed herein, a battery diagnosis apparatus includes a sensor configured to measure time-based first battery data from a diagnosis target battery and a controller configured to pre-process the first battery data to generate pre-processed data, generate frequency-based second battery data based on the pre-processed data, and diagnose, based on statistical data related to the second battery data, whether the diagnosis target battery is abnormal.

POSITIVE ELECTRODE ACTIVE MATERIAL, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4715906A1

A positive electrode active material according to the present invention is a positive electrode active material including lithium composite transition metal oxide particles having a nickel content of 50 mol% to 80 mol% among all metals excluding lithium and having the form of a single particle formed of one single nodule, or a quasi-single particle, a composite of up to 30 nodules, and a coating layer formed on a surface of the lithium composite transition metal oxide particles, wherein the positive electrode active material satisfies Equation 1 below. 1.0≤P2/P1≤4.0In Equation 1 above, P1 is a total volume of pores having a pore diameter greater than 40 A in the positive electrode active material, and P2 is a total volume of pores having a pore diameter of 40 Å or less in the positive electrode active material.

BIPOLAR UNIT CELL AND BIPOLAR BATTERY COMPRISING SAME

Resumen de: EP4715925A1

According to an embodiments of the present disclosure, provided is a bipolar unit cell comprising:a laminate which includes a positive electrode current collector, a positive electrode material layer formed on one surface of the positive electrode current collector, a negative electrode current collector, a negative electrode material layer formed on one surface of the negative electrode current collector, and a separator, and in which the positive electrode material layer and the negative electrode material layer are stacked so as to face each other while interposing a separator between them, anda sealing portion that is attached form the other surface of the positive current collector to the other surface of the negative current collector to integrally form the laminate and seal the inside,wherein a conductive layer is formed on the outside of at least one of the positive electrode current collector and the negative electrode current collector, and a bipolar battery having a structure in which two or more of the bipolar unit cells are stacked.

ELECTRODE SHEET MANUFACTURING METHOD AND COATING APPARATUS

Resumen de: EP4715893A1

An electrode sheet manufacturing method and a coating apparatus. The electrode sheet manufacturing method comprises the steps of: coating a surface to be coated of a current collector with a first active material so as to form a first film layer; coating said surface with a second active material to form a second film layer; coating said surface with a third active material so as to form a third film layer; and after the first film layer, the second film layer and the third film layer are all formed, the second film layer and the third film layer being both connected to the first film layer, the second film layer and the third film layer being sequentially distributed at intervals in a first direction, the second film layer and the third film layer being located on the same side of the first film layer, and the first film layer, the second film layer, the third film layer and said surface jointly defining a tab welding slot. In the method, the tab welding slot is manufactured by coating, without the need to manufacture the tab welding slot by laser cleaning, and the method is beneficial to reducing the manufacturing cost of electrode sheets.

OPTICAL SENSOR

Resumen de: EP4715358A1

Various embodiments of optical sensors such as optical leak sensors are provided. Example embodiments of the optical sensors described herein may include an optical prism comprising a plurality of substantially semicylindrical grooves, a plurality of wires disposed within the plurality of substantially semicylindrical grooves (wherein the plurality of wires is configured to provide heat to the sensing surface of the optical prism in response to application of power), and/or a microcontroller configured to provide the power to the plurality of wires.

ELECTROLYTE AND SECONDARY BATTERY

Resumen de: EP4715940A1

Provided are an electrolyte and a secondary battery. The electrolyte includes a lithium salt and a solvent. The solvent includes ethylene carbonate, propylene carbonate, fluorinated ethylene carbonate, and linear carbonate. A mass percentage of the ethylene carbonate relative to the solvent is 2% to 10%. A sum of a mass of the propylene carbonate and the fluorinated ethylene carbonate relative to the mass percentage of the solvent is 10% to 30%. The electrolyte may well match batteries with high working voltage, while ensuring that the initial impedance of the battery does not deteriorate, effectively improving the issues of poor cycle performance and large cycle gas generation of the battery.

BATTERY PACK

Resumen de: EP4715980A1

The application discloses a battery pack, including: a casing body, including a casing shell and a casing cover, wherein the casing shell forms a accommodating cavity, and the casing cover and the casing shell are connected with each other so that the casing cover closes the accommodating cavity; a plurality of battery cells, arranged inside the accommodation cavity; a plurality of pressure strips, arranged between the casing cover and the battery cells; a first adhesive; and a second adhesive; wherein the first adhesive is arranged between the casing cover and the plurality of pressure strips to connect the casing cover with the plurality of pressure strips, and the second adhesive is arranged between the plurality of pressure strips and the plurality of battery cells to connect the plurality of pressure strips with the plurality of battery cells.

APPARATUS FOR INSPECTING ELECTRODE-TAB ASSEMBLY AND INSPECTION METHOD USING SAME

Resumen de: EP4715364A1

Embodiments provide an electrode-tab assembly inspection device. The electrode-tab assembly inspection device includes: a first jig configured to fix an electrode including a coated part and an uncoated part; a second jig configured to pull an electrode tab, which is welded to the uncoated part of the electrode, in a direction that is not parallel to the electrode; and a gauge configured to sense a tensile force applied to the electrode tab.

ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4715943A1

This application provides an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly includes a negative electrode plate, a positive electrode plate, and a separator, where the negative electrode plate includes a negative electrode film layer, the negative electrode film layer including a fluorinated polymer; and the positive electrode plate includes a positive electrode film layer, the positive electrode film layer including a nitrile-based polymer material. Using this electrode assembly can significantly improve the cycle performance of batteries.

ELECTROLYTE, BATTERY AND ELECTRICAL APPARATUS

Resumen de: EP4715937A1

The present application discloses an electrolyte solution, a battery and an electrical device. The electrolyte solution includes a first additive, a second additive and a third additive. The first additive includes a sulfate ester compound. The second additive includes:, where Z₁-Z₄ each independently include an oxygen atom or a sulfur atom. The third additive includes at least one of fluorosulfonate, tetrafluoroborate, difluorophosphate, difluoro(oxalato)borate, bis(oxalato)borate and difluorobis(oxalato)phosphate. Based on the total mass of the electrolyte solution, content W₁ of the first additive, content W₂ of the second additive and content W₃ of the third additive satisfy W₁:W₂:W₃=1:(0.1-1.5):(0.02-2.5).

NON-AQUEOUS ELECTROLYTE, SECONDARY BATTERY, AND ELECTRICAL APPARATUS

Resumen de: EP4715936A1

The present application relates to the technical field of batteries, and to a non-aqueous electrolyte, a secondary battery and an electrical apparatus. The non-aqueous electrolyte comprises a cyclic sulfate additive and a phosphate or isocyanate additive. The present application further relates to a secondary battery comprising the non-aqueous electrolyte, and an electrical apparatus comprising the secondary battery.

BATTERY CELL AND METHOD AND SYSTEM FOR MANUFACTURING SAME, AND BATTERY AND ELECTRIC DEVICE

Resumen de: EP4715974A1

Embodiments of this application provide a battery cell (7), a method and system for manufacturing same, a battery, and an electrical device. The battery cell (7) includes: a housing (20), on which an opening (21) is made; an electrode assembly (10), accommodated in the housing (20), where a first tab (12) is disposed on the electrode assembly (10) at an end oriented toward the opening (21); and an end cap (30), configured to fit and cover the opening (21). The end cap (30) includes a cap body (31) and a first protruding portion (32) connected to the cap body (31). A fragile portion (311) is disposed on the cap body (31). The end cap (30) is configured to rupture along the fragile portion (311) when an internal pressure of the battery cell (7) reaches a threshold, so as to release the internal pressure. The first protruding portion (32) protrudes from the cap body (31) toward the electrode assembly (10), and is configured to support the first tab (12) so that an avoidance clearance (G) configured to avoid the fragile portion (311) is formed between the first tab (12) and the cap body (31). This application reduces the risk that the first tab (12) crushes the fragile portion (311), and improves the sealing performance and safety performance of the battery cell (7).

ELECTRODE SURFACE ANALYSIS METHOD AND ELECTRODE SURFACE ANALYSIS SYSTEM

Resumen de: EP4715372A1

The present disclosure relates to a method and system for analyzing an electrode surface, and more specifically, to a method and system for analyzing an electrode surface that can precisely analyze foreign substances remaining on the electrode surface during an electrode manufacturing process using a hyperspectral CCD to increase process efficiency and product reliability.

BATTERY PACK AND DEVICE COMPRISING SAME

Resumen de: EP4715987A1

A battery pack according to an embodiment of the present disclosure comprises: a battery module; a pack frame in which the battery module is housed and one side thereof is open; a pack cover that covers the open one side of the pack frame; and a fire-resistant sheet attached to one end of the pack cover. The battery module comprises a battery cell stack in which a plurality of battery cells are stacked; a venting part formed on one surface of the battery module to discharge venting gas; and a protruding pin that protrudes toward the pack cover on one surface of the battery module.

BATTERY PACK AND AUTOMOBILE COMPRISING SAME

Resumen de: EP4715992A1

Disclosed is a battery pack and a vehicle including the same. The battery pack includes a plurality of battery modules in which a plurality of battery cells are stacked; a pack case in which the plurality of battery modules are accommodated; and a fastening member configured to fasten the pack case, wherein the fastening member is configured to be separated by an internal pressure of the pack case.

POLE, POLE COMPONENT AND BATTERY

Resumen de: EP4715978A1

A pole (11), a pole component (10), and a battery are provided. The pole (11) includes a first pole portion (111) and a second pole portion (112). An outer periphery of the first pole portion (111) is convexly provided with a first flange (1114). An end of the second pole portion (112) is provided with a mating groove (1121), and the first end (1111) is provided in the mating groove (1121) and engages with the second pole portion (112). An outer periphery of the second pole portion (112) is convexly provided with a second flange (1125), the second flange (1125) is provided with a first connecting groove (1126), and the first flange (1114) is at least partially located in the first connecting groove (1126) and engages with the second flange (1125). The pole improves a bonding force between the first pole portion and the second pole portion.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND METHOD OF PREPARING THE SAME

Resumen de: EP4714906A2

The present application relates to a positive electrode active material for a rechargeable lithium battery, and a method for preparing a positive electrode active material for a rechargeable lithium battery, the positive electrode active material including: a core particle comprising a lithium nickel-based composite oxide represented by Chemical Formula 11; and a coating layer located on a surface of the core particle and comprising one element or a combination thereof selected from the group consisting of Al, B, Ba, Ca, Ce, Co, Cr, Cu, Fe, Mg, Mn, Mo, Nb, Si, Sn, Sr, Ti, V, W, Y, Zn, and Zr, wherein the positive electrode active material has a value defined by Mathematical Formula 1 of greater than or equal to about 5.        Chemical Formula 11     Lia11Nix11M<11>y11M<12>z11O2-b11Xb11wherein, in Chemical Formula 11, 0.9≤a11≤1.2, 0.3≤x11<1, 0 and M<12> are each independently one or more elements selected from Al, B, Ba, Ca, Ce, Co, Cr, Cu, Fe, Mg, Mn, Mo, Nb, Si, Sn, Sr, Ti, V, W, Y, Zn, and Zr, and X is one or more elements selected from F, P, and S, ∑MxEP-EDS/MxICPwherein Mx denotes a metal component contained in the coating layer, Mx (EP-EDS) denotes a mol% of the metal component Mx relative to total metals excluding lithium, present on the surface of the positive electrode active material as measured by Electron Probe - Energy Dispersive Spectroscopy (EP-EDS), a

SECONDARY BATTERY, PACK AND ELECTRONIC APPARATUS

Resumen de: EP4715920A1

A secondary battery (100), a pack, and an electronic apparatus are provided. The secondary battery (100) includes an electrode assembly (120) formed by a first electrode sheet (121), a first separator (141), a second electrode sheet (122), and a second separator (142) and an insulating film (300). A protruding end of a tail end (141e) of the first separator (141) and a tail end (142e) of the second separator (142) constitutes the tail end (120e) of the electrode assembly (120). A tail end (122e) of the second electrode sheet (122) extends beyond a tail end (121e) of the first electrode sheet (121). The tail end (120e) of the electrode assembly (120) extends beyond the tail end (122e) of the second electrode sheet (122). A starting end (300s) of the insulating film (300) extends beyond the tail end (120e) of the electrode assembly (120).

CYLINDRICAL LITHIUM SECONDARY BATTERY

Resumen de: EP4715946A1

The present invention relates to a cylindrical lithium secondary battery including an electrode assembly in which a positive electrode, a separator, and a negative electrode are sequentially stacked and wound in one direction, an electrolyte, and a battery case in which the electrode assembly and the electrolyte are accommodated, wherein the electrolyte includes one or more selected from the group consisting of a cyclic carbonate-based solvent and a linear carbonate-based solvent, a diffusion of ions in a battery (DIB) value defined by Equation 1 below is 150 mS/mm² to 160 mS/mm², and the viscosity of the electrolyte at 25 °C is 3.23 cP or less. DIBDiffusionofIoninaBattery=hR×1r×C×t+×1000In Equation 1 above, h (unit: mm) is the height of the cylindrical lithium secondary battery, R (unit: mm) is the diameter of the cylindrical lithium secondary battery, r (unit: mm) is the radius of a winding central portion of the electrode assembly, C (unit: mS/mm) is the ion conductivity of the electrolyte, and t⁺ is the cation transport rate of the electrolyte.

HIGH-VOLTAGE BOX, BATTERY CLUSTER, AND ENERGY STORAGE SYSTEM

Resumen de: EP4716056A1

A high-voltage box (110), a battery cluster (100), and an energy storage system (10) are provided. The high-voltage box (110) includes a first interface (B+), a second interface (B-), a third interface (P+), a fourth interface (P-), a first fuse (FU1), and a main control module (111). The third interface (P+) is electrically connected to the battery pack (120) through the first fuse (FU1) and the first interface (B+) in sequence. Two ends of the second interface (B-) are electrically connected to the battery pack (120) and the fourth interface (P-), respectively. The main control module (111) includes a voltage acquisition module (101), one end of the voltage acquisition module (101) is electrically connected to a first node (M), and the other end of the voltage acquisition module (101) is electrically connected to a second node (N).

LAMINATION TAPE FEEDING SYSTEM FOR AN ELECTRODE PLATE SUBSTRATE

Resumen de: EP4714880A1

A lamination tape feeding system for an electrode plate substrate is provided. The lamination tape feeding system includes an input roll configured to input a lamination tape to be attached to an uncoated region of the electrode plate substrate to which an active material is applied, a plurality of guide rolls configured to guide the lamination tape, a discharge roll configured to discharge the lamination tape. The system also includes at least one crown roll that is disposed in a path of the lamination tape between the input roll and the discharge roll, disposed in the path between the guide rolls, and has a maximum height at the center of a width direction that intersects the moving direction of the lamination tape, with the height decreasing toward ends the at least one crown roll.

POSITIVE ELECTRODE MATERIAL POWDER, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING SAME

Resumen de: EP4715905A1

A positive electrode material powder according to the present invention is a positive electrode material powder including a positive electrode active material containing lithium nickel-based oxide particles having a nickel (Ni) content of 50 mol% to 80 mol% among all metals excluding lithium, wherein the lithium nickel-based oxide particles are in the form of a single particle formed of one single nodule, or a quasi-single particle, a composite of up to 30 nodules, and a PCF value indicated by Equation 1 according to the present invention satisfies a range of 2.0 to 3.4.

SECONDARY BATTERY

Nº publicación: EP4715967A1 25/03/2026

Solicitante:

LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd

Resumen de: EP4715967A1

Disclosed is a secondary battery including: a stack-type electrode assembly including a plurality of unit cells stacked in a first direction, and having electrode leads at both ends in a second direction perpendicular to the first direction; a multifunctional terminal block (MTB) at both ends of the stack-type electrode assembly; and a laminate sheet wrapping around the sides of the stack-type electrode assembly, wherein the MTB includes: an inner housing, and a first assembly comprising an electrode terminal part stored in the inner housing and electrically connected to electrode leads of the stack-type electrode assembly; and an outer housing wrapping around at least a portion of the first assembly, and a second assembly comprising a rupture disk coupled to the outer housing and configured to rupture to release gas upon an increase in internal pressure.