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BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS

Resumen de: EP4765457A1

A battery cell (7), a battery (2), and an electrical apparatus. The battery cell (7) comprises a casing (20), an electrode assembly (10), and an electrode terminal (30). The casing (20) comprises a wall portion (23). The electrode assembly (10) is accommodated in the casing (20) and comprises tabs (12). The electrode terminal (30) is arranged on the wall portion (23); the side of the electrode terminal (30) away from the electrode assembly (10) in the thickness direction of the wall portion (23) is provided with an outer surface (31), the electrode terminal (30) is provided with a recessed portion (32) recessed from the outer surface (31), the electrode terminal (30) comprises a connecting portion (33) arranged at the bottom of the recessed portion (32), and the connecting portion (33) is electrically connected to the tabs (12).

NEGATIVE ELECTRODE ACTIVE MATERIAL, AND NEGATIVE ELECTRODE AND SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4765252A1

The present invention relates to a negative electrode active material. Specifically, the negative electrode active material comprises: artificial graphite particles; and a nitrogen element, an oxygen element, and a hydrogen element present on the surface of, inside, or both on the surface of and inside the artificial graphite particles, wherein the content of the nitrogen element is 80 to 180 mg per kg of the negative electrode active material.

APPARATUS FOR TESTING BATTERY

Resumen de: EP4764538A1

The present disclosure relates to a device for testing a battery having an electrode terminal, and the device may include: a power supply unit configured to supply power; a power supply path having one end connected to the electrode terminal and the other end connected to the power supply unit, and configured to provide a path through which power is supplied from the power supply unit to the electrode terminal; a temperature sensing unit disposed at least on one side of the power supply path and configured to measure a temperature of the power supply path; a heating unit disposed at least on one side of the power supply path and configured to apply heat to the power supply path; and a controller configured to control the heat application of the heating unit depending on a temperature measurement result of the temperature sensing unit.

BATTERY DIAGNOSIS DEVICE AND METHOD THEREOF

Resumen de: EP4764571A1

A battery management device according to an embodiment of this document includes a memory configured to store at least one instruction and a processor configured to execute the at least one instruction, and the processor is configured to acquire incremental capacity data based on charging and discharging data for a plurality of battery cells, identify reference incremental capacity values of the plurality of battery cells corresponding to voltages of each of the plurality of battery cells using the incremental capacity data, and acquire a target voltage for diagnosing a state of the battery cell using the reference incremental capacity values.

BATTERY MODULE, BATTERY PACK AND VEHICLE INCLUDING SAME

Resumen de: EP4765424A1

0001 The present disclosure may provide a battery module that includes a plurality of battery cells, a top cover configured to cover one surface of the plurality of battery cells, and at least one thermal deformation member disposed between the top cover and the battery cells, and configured to expand in volume and deform a portion of the top cover when a temperature reaches a preset temperature or higher due to heat.

BATTERY PACK AND VEHICLE INCLUDING SAME

Resumen de: EP4765431A1

The present disclosure relates to a battery pack including: a plurality of battery modules including a plurality of battery cells; a pack case having a storage space formed to store the plurality of battery modules; a cover member provided between the battery modules and the pack case, and having a through-hole formed to allow venting gas discharged from the battery cells to pass therethrough; and a spacer mounted to the cover member and configured to maintain a gap between the cover member and the pack case.

ADHESIVE FILM AND POUCH-TYPE SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4763935A1

The present invention relates to an adhesive film including an outer insulating layer; and an adhesive layer disposed on one surface of the outer insulating layer, wherein the adhesive layer includes a thermosetting resin, and the adhesive film satisfies at least one of an adhesion to a stainless steel substrate of 100 gf/25 mm or more and an adhesion to a polyester resin substrate of 200 gf/25 mm or more, wherein the adhesion is adhesion when the adhesive film is peeled at a peeling speed of 300 mm/min and a peeling angle of 180° at p140°C, after a surface opposite to a surface of the adhesive layer in contact with the outer insulating layer is pressed onto the stainless steel substrate or the polyester-based resin substrate using a 2 kg roller.

BATTERY MODULE AND BATTERY PACK AND VEHICLE INCLUDING SAME

Resumen de: EP4765439A1

The present disclosure relates to a battery module including: a plurality of battery cells each having an electrode lead; and a bus-bar assembly including a housing provided on at least one side of the plurality of battery cells, and a bus-bar provided in the housing and configured such that the electrode lead is wound around and coupled to an outer circumferential surface thereof .

ANODE, ANODE SHEET AND ELECTRODE ASSEMBLY

Resumen de: EP4765233A1

0001 An anode according to various embodiments comprises: a first metal layer formed of a lithium metal; and a second metal layer which is formed of a material other than the lithium metal and which at least partially overlaps and is bonded to the first metal layer, wherein the second metal layer can be interposed between a plurality of the first metal layers, or the first metal layer can be interposed between a plurality of the second metal layers. Other embodiments are possible.

POUCH FILM LAMINATE, POUCH-TYPE BATTERY CASE, AND POUCH-TYPE SECONDARY BATTERY

Resumen de: EP4765374A1

0001 A pouch film laminate according to the present invention is characterized in that it includes a base material layer, a gas barrier layer, and a sealant layer which are sequentially laminated, wherein the base material layer includes a drawing assistance film disposed on the gas barrier layer and a surface protection film disposed on the drawing assistance film, a ratio of machine direction (MD) tensile strength of the drawing assistance film to MD tensile strength of the surface protection film is in a range of 0.9 to 1.1, and a ratio of transverse direction (TD) tensile strength of the drawing assistance film to TD tensile strength of the surface protection film is in a range of 0.9 to 1.1.

POUCH FILM LAMINATE, POUCH-TYPE BATTERY CASE, AND POUCH-TYPE SECONDARY BATTERY

Resumen de: EP4765376A1

The present invention relates to a pouch film laminate including a substrate layer, a gas barrier layer, and a sealant layer laminated in sequence, wherein the substrate layer includes a surface protection layer, and a ratio of a thickness of the pouch film laminate to a thickness of the surface protection layer is 6 to 10.

SECONDARY BATTERY, BATTERY MODULE, AND BATTERY PACK INCLUDING SAME

Resumen de: EP4765405A1

0001 A battery pack according to the present disclosure includes cylindrical secondary batteries provided in plurality; and pouch-type secondary batteries positioned between the plurality of cylindrical secondary batteries and having a curved surface corresponding to a side surface of the cylindrical secondary battery on a side facing the cylindrical secondary battery.

DRY ELECTRODE, MANUFACTURING METHOD THEREOF, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4765221A1

The present invention relates to a dry electrode including a current collector, and an electrode material mixture film disposed on the current collector, wherein the electrode material mixture film includes an electrode active material and a fibrillizable binder, a ratio (I_B/I_A) of a C₃H₇⁺ peak intensity (I_B) to a C₂H₃O⁺ peak intensity (I_A), which is measured on a surface of the current collector by Time-of-Flight secondary ion mass spectrometry (ToF-SIMS), is 1.3 or less, and a ratio of carbon content at an interface of the current collector to carbon content in the electrode material mixture film, which is measured by scanning electron microscope-energy dispersive X-ray spectroscopy, is 1.08 or more.

CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4765239A1

The present invention relates to a positive electrode active material including a lithium composite transition metal oxide in the form of a single particle composed of one nodule or a pseudo-single particle, which is a composite of 30 or fewer nodules, and a coating layer including a first coating layer formed on the surface of the lithium composite transition metal oxide and a second coating layer formed on the surface of the first coating layer, wherein the lithium composite transition metal oxide has a roundness, which is defined by Equation 1 below, of 0.50 to 0.68, and the second coating layer contains boron, wherein the boron is included in a weight of 300 ppm to 2400 ppm based on the total weight of the positive electrode active material. Roundness=4×Area/π×R2In Equation 1 above, R denotes the length of a major axis passing through the center of the lithium composite transition metal oxide, and Area denotes an actual area of the lithium composite transition metal oxide.

CATHODE FOR SODIUM SECONDARY BATTERY, AND SODIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4765224A1

0001 The present invention relates to a positive electrode for a sodium secondary battery, the positive electrode including a current collector, a first positive electrode active material layer disposed on the current collector, and a second positive electrode active material layer disposed on the first positive electrode active material layer, wherein the first positive electrode active material layer includes a first positive electrode active material, and the second positive electrode active material layer includes a second positive electrode active material, wherein the first positive electrode active material includes sodium composite transition metal oxide particles having an O3 octahedral crystal structure, and the second positive electrode active material includes sodium composite transition metal oxide particles having a P2 orthorhombic crystal structure, wherein a ratio of the average particle diameter (D<50>) between the first positive electrode active material and the second positive electrode active material is 2:1 to 3:1.

SIMULATION SYSTEM AND OPERATION METHOD OF SIMULATION SYSTEM

Resumen de: EP4765072A1

According to some embodiments, a simulation system includes an interface panel configured to receive a manipulation input from an operator, a main simulator configured to load a training content which reproduces an end of line (EOL) process for manufacturing a cylindrical battery based on the manipulation input and provide the training content to the operator through interaction with the operator, and a display configured to display a specific image according to specific processes of the EOL process.

BIPOLAR BATTERY AND MANUFACTURING METHOD THEREFOR

Resumen de: EP4765276A1

According to an embodiment of the present disclosure, provided is a bipolar battery comprising:a bipolar assembly comprising a stacked body containing a bipolar electrode and a separator, and a gel electrolyte impregnated throughout the stacked body; and a battery case,and not comprising an interfacial gap at the interface between the bipolar electrode and the separator,wherein the gel electrolyte voids within the stacked body are 5% or less of the total volume capable of gel electrolyte impregnation.

BATTERY CELL MANUFACTURING APPARATUS AND MANUFACTURING METHOD

Resumen de: EP4765275A1

0001 An apparatus for manufacturing a battery cell according to an embodiment of the present disclosure includes a vacuum chamber in which a semi-finished battery cell is placed, the semi-finished battery cell including an accommodation portion accommodating an electrolyte solution and an electrode assembly, and a gas pocket portion connected to the accommodation portion and located higher than the accommodation portion; a piercing unit configured to form a degassing hole in the gas pocket portion by piercing; a sealing tool configured to form a temporary sealing portion across between the degassing hole and the accommodation portion, and form a sealing area including the temporary sealing portion while the sealing tool moves up in a state of being in contact with the gas pocket portion; a cutting unit configured to cut off a portion of an upper part of the gas pocket portion to form an opening after the temporary sealing portion is formed; and a spray unit configured to spray gas into the opening.

BATTERY CHARGING DEVICE AND BATTERY FORMATION SYSTEM INCLUDING SAME

Resumen de: EP4765566A1

A battery charging apparatus according to the present disclosure includes a current supply circuit configured to supply charging current through a plurality of conducting wires that each corresponds to respective one of the plurality of batteries; and a charging jig configured to support the plurality of batteries and provide the charging current supplied through the plurality of conducting wires to the plurality of batteries, wherein the charging jig includes a plurality of connection pins electrically connecting the plurality of conducting wires to the first electrode terminals of the plurality of batteries; a conductive plate that is in common contact with the second electrode terminals of the plurality of batteries to allow the second electrode terminals to have the same potential; and a cooling structure having a cooling channel through which a cooling material moves and configured to cool the conductive plate.

BATTERY MANAGEMENT DEVICE AND BATTERY MANAGEMENT METHOD

Resumen de: EP4764529A1

0001 According to some embodiments, a battery management device includes an interface configured to acquire battery data of a battery and a controller configured to calculate a first state of health (SOH) value of the battery based on the battery data, calculate a first SOH correction value for the first SOH value using a regression equation that calculates an SOH correction value based on error factors causing an error in the first SOH value, and calculate a second SOH value by applying the first SOH correction value to the first SOH value.

BATTERY DIAGNOSIS DEVICE AND METHOD

Resumen de: EP4764566A1

An apparatus for diagnosing a battery includes a communication interface for receiving battery data obtained by applying a current signal to a battery module, and at least one processor for performing error correction to correct an influence of a sensing line related to a structure of the battery module and generating preprocessed data from the battery data, extracting a feature value based on the preprocessed data, and diagnosing whether the battery module is abnormal based on a plurality of feature values extracted at different time zones.

BATTERY DIAGNOSIS DEVICE AND METHOD

Resumen de: EP4764567A1

0001 An apparatus for diagnosing battery disclosed in this document includes a communication interface configured to receive battery data acquired by applying a current signal to a battery pack, and at least one processor configured to remove noise from the battery data to generate preprocessed data, apply a fast Fourier transform to the preprocessed data and acquire impedance data, and extract a feature value in which an influence of a sensing line is corrected from the impedance data and diagnose whether the battery pack is abnormal.

BATTERY MODULE, AND BATTERY PACK AND VEHICLE INCLUDING SAME

Resumen de: EP4765416A1

Disclosed is a battery module, and a battery pack and a vehicle including the same. The battery module includes a battery cell stack in which a plurality of battery cells are stacked; a module case in which the battery cell stack is accommodated; and a flame suppression pad arranged between the plurality of battery cells within the module case, and the module case has a rupture portion formed to be ruptured by gas.

BATTERY PACK

Resumen de: EP4765395A1

0001 Embodiments provide a battery pack. The battery pack includes a pack housing with a base plate and a plurality of battery cell assemblies on the base plate, in which each of the plurality of battery cell assemblies includes a plurality of battery cells arranged in a first direction, a first side beam and a second side beam spaced apart from each other with the plurality of battery cells therebetween, and a first fireproof structure coupled to the first side beam, the first fireproof structure includes a first fire-resistant sheet and a first fire-resistant adhesive layer applied to the first fire-resistant sheet, and the first fire-resistant sheet and the first fire-resistant adhesive layer include different materials.

WELDING METHOD, WELDED PRODUCT, AND BATTERY MODULE

Nº publicación: EP4763404A1 24/06/2026

Solicitante:

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

Resumen de: EP4763404A1

0001 The present disclosure relates to a welding method, a welded product, and a battery module, and the welding method according to the present disclosure includes a positioning process in which multiple base materials are positioned in overlapping with each other; and a welding process in which the multiple base materials are welded together to form a predetermined welding pattern, wherein the welding process welds the welding pattern in a form in which a plurality of spiral patterns are connected without overlapping.