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Publicaciones de los últimos 15 días/Last 15 days publications (excluidas pubs. CN y JP /CN and JP pubs. excluded)
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BATTERY AND ELECTRIC DEVICE

Publication No.:  EP4586381A1 16/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
EP_4586381_PA

Absstract of: EP4586381A1

This application discloses a battery and an electric device. The battery includes a housing, a battery module, and a positioning member. A structural beam is arranged inside the housing. The battery module is arranged in the housing. The positioning member is connected to the structural beam for positioning the battery module. The technical solution provided in this application can reduce the manufacturing cost of the battery.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Publication No.:  EP4586390A1 16/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
Contemporary Amperex Technology (Hong Kong) Limited
EP_4586390_PA

Absstract of: EP4586390A1

Provided in the present application are a battery cell, a battery, and an electric device. The battery cell includes a casing, an electrode assembly, and a current collecting member. The electrode assembly includes a first tab. The casing is used for accommodating the electrode assembly. The current collecting member includes a first connection portion and a second connection portion. The first connection portion is electrically connected to the first tab. The second connection portion is connected to the first connection portion and protrudes in a direction away from the electrode assembly. The second connection portion includes at least one first protrusion and at least one second protrusion. The height of the second protrusion is greater than the height of the first protrusion. The at least one first protrusion is welded to the casing. The at least one second protrusion is welded to the casing.

CASING ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS

Publication No.:  EP4586357A1 16/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
Contemporary Amperex Technology (Hong Kong) Limited
EP_4586357_PA

Absstract of: EP4586357A1

Disclosed in the present application are a casing assembly, a battery cell, a battery and an electrical apparatus. The casing assembly comprises a casing and first terminals, mounting holes being formed in the casing; each first terminal comprises a terminal body, a first limiting platform and a second limiting platform which are integrally formed, the terminal body passing through a mounting hole, and the first limiting platform and the second limiting platform being arranged at two ends of the terminal body in the axial direction of the mounting hole, and the first limiting platforms are in limiting fit with the outer side of the casing, and the second limiting platforms are in limiting fit with the inner side of the casing, such that the first terminals are riveted to the casing. The casing assembly of the present application facilitates assembly, and can improve the reliability and stability of connection between the first terminals and the casing.

BATTERY PACK FOR GENERATING SYNCHRONIZATION SIGNALS AND VEHICLE INCLUDING SAME

Publication No.:  EP4585457A1 16/07/2025
Applicant: 
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
EP_4585457_PA

Absstract of: EP4585457A1

A battery pack for generating a synchronization signal according to an embodiment disclosed herein includes one or more battery modules including a plurality of battery cells capable of supplying power to a motor of a vehicle and a battery management system electrically connected to another battery management system of another battery pack, in which the battery management system is configured to transmit a designated first synchronization signal to the other battery pack before performing a designated task, and receive a designated second synchronization signal from the other battery pack, determine a reference synchronization signal based on the first synchronization signal and the second synchronization signal, and perform the designated task based on the reference synchronization signal.

PULSED NANO SURFACING METHODS

Publication No.:  EP4584842A2 16/07/2025
Applicant: 
NANOVIS LLC [US]
Nanovis, LLC
US_2025198044_PA

Absstract of: US2025198044A1

A system or method to fabricate a nano surface on a conductive device, including a high voltage DC power source, a pulse generator connected to the power source, a fluid container, in which the electrolyte solution is placed and a cathode and an anode. The anode may be the conductive device and the anode and cathode are connected to the pulse generator with both being positioned within the fluid container and submerged in the electrolyte solution. The delivery of nanosecond pulses of electricity to the electrodes nanosurface the conductive material. The disclosure further includes methods to create a nano surface or texture on a conductive device having for example the steps of cleaning or pretreating the conductive device.

METHODS AND SYSTEMS FOR UPCYCLING SPENT BATTERIES

Publication No.:  EP4584832A2 16/07/2025
Applicant: 
PRINCETON NUENERGY INC [US]
Princeton Nuenergy Inc
KR_20250055609_PA

Absstract of: CN119816956A

The present disclosure provides methods and systems for recycling and upgrading reconstituted waste battery cathode materials. In some embodiments, the method may include separating cathode material of a spent battery into a plurality of sets of particles, where a first set of the plurality of sets of particles includes first particles having a first size and a second set of the plurality of sets of particles includes second particles having a second size. The method further includes generating a first precursor solution using the first set of particles; generating a second precursor solution using the second set of particles; generating a first cathode material using the first precursor solution; and generating a second cathode material using the second precursor solution.

FORCED DISCHARGE FOR BATTERIES

Publication No.:  EP4584865A1 16/07/2025
Applicant: 
ASCEND ELEMENTS INC [US]
Ascend Elements, Inc
CN_120266358_PA

Absstract of: WO2024054684A1

A method for discharging end-of-life batteries prior to dismantling and recycling involves recovering residual stored electrical energy by draining the battery to a zero charge state, and reverse biasing the battery to bring the potential from a zero charge state of around 2.7 V to a zero or near zero energy state. The reverse bias inverts the normal usage polarity for inducing a reverse current flow, and continues based on formation of internal short circuits formed on the cathode current collector for rendering the battery with little to no energy storage for safe agitation and dismantling.

METHOD OF MAKING MONODISPERSED SINGLE CRYSTAL CATHODE MATERIAL

Publication No.:  EP4584218A1 16/07/2025
Applicant: 
REDWOOD MAT [US]
Redwood Materials
KR_20250066472_PA

Absstract of: CN119816475A

A method comprising: providing a metal salt solution comprising nickel, cobalt, manganese, aluminum, or a combination thereof; the metal salt solution is combined with an alkaline solution, where the combination of the metal salt solution and the alkaline solution is maintained at a pH of not greater than 10 to form a metal hydroxide precursor. To form the cathode active material, the method further includes adding a lithium compound to the metal hydroxide precursor to form a metal hydroxide precursor mixture; and heat treating the metal hydroxide precursor mixture to form the single crystal cathode active material.

CATHODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Publication No.:  EP4586333A1 16/07/2025
Applicant: 
SK ON CO LTD [KR]
SK On Co., Ltd
EP_4586333_A1

Absstract of: EP4586333A1

A cathode for a lithium secondary battery according to embodiments of the present disclosure includes a cathode current collector, a first cathode active material layer which is disposed on at least one surface of the cathode current collector, and includes a first cathode active material having a single particle form and a point-like conductive material, and a second cathode active material layer which is disposed on the first cathode active material layer, and includes a second cathode active material having a single particle form and a linear conductive material, wherein the second cathode active material has an average particle diameter (D50) of 3 µm to 4 µm.

ELECTRONIC DEVICE FOR DETECTING BATTERY ABNORMALITY, AND METHOD OF OPERATING SAME

Publication No.:  EP4585941A1 16/07/2025
Applicant: 
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
EP_4585941_A1

Absstract of: EP4585941A1

An electronic device according to an embodiment disclosed herein includes a battery module including a plurality of battery cells, a sensor circuit configured to obtain state values of each of the plurality of battery cells, and a processor configured to obtain values related to states of each of the plurality of cells as input data through the sensor circuit, obtain feature data based on a feature matrix derived from the input data by using a designated matrix decomposition algorithm, and identify whether each of the plurality of cells is abnormal, based on the feature data, in which the feature matrix is a matrix where values of a designated number of major diagonal components among a plurality of diagonal components of a diagonal matrix for the input data are substituted by 0. The feature matrix may be a matrix where values of a designated number of major diagonal components among a plurality of diagonal components of a diagonal matrix for the input data are substituted by 0.

CARBON NANOTUBE DISPERSION SOLUTION, PREPARATION METHOD THEREFOR, ELECTRODE SLURRY COMPOSITION COMPRISING SAME, ELECTRODE COMPRISING SAME, AND SECONDARY BATTERY COMPRISING SAME

Publication No.:  EP4585560A1 16/07/2025
Applicant: 
BETTERIAL CO LTD [KR]
Betterial Co., Ltd
EP_4585560_A1

Absstract of: EP4585560A1

The present disclosure relates to a carbon nanotube dispersion including carbon nanotubes, a first dispersant having an amide group, a second dispersant having at least one functional group selected from the group consisting of hydroxyl and carboxyl groups, and sulfur. The present disclosure also relates to a method of preparing the dispersion, an electrode slurry composition including the dispersion, an electrode including the electrode slurry composition, and a secondary battery including the electrode.

ELECTRONIC DEVICE FOR DETECTING BATTERY ABNORMALITY, AND METHOD FOR OPERATING SAME

Publication No.:  EP4585940A1 16/07/2025
Applicant: 
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
EP_4585940_PA

Absstract of: EP4585940A1

An electronic device according to an embodiment disclosed herein obtains input data through a detection circuit, standardizes each of column vectors of the input data to obtain standardized data for the input data, obtains determination reference data based on the standardized data, and determines first state abnormality and/or second state abnormality of each of the M battery cells based on values indicated by the entries of respective row vectors of the determination reference data. The first state abnormality is determined based on a learning-based model, and the second state abnormality is determined based on a scheme other than the learning-based model.

ELECTRONIC DEVICE AND ELECTRONIC DEVICE CONTROL METHOD

Publication No.:  EP4585314A1 16/07/2025
Applicant: 
LG ELECTRONICS INC [KR]
LG Electronics Inc
EP_4585314_PA

Absstract of: EP4585314A1

According to embodiments, provided is an electronic device comprising: a first roller; a second roller arranged to face the first roller; and a drive unit that rotatably drives the first roller at a first speed and rotatably drives the second roller at a second speed to form, into a film, a mixture being input between the first roller and the second roller.

NONAQUEOUS LITHIUM ELECTRICITY STORAGE ELEMENT

Publication No.:  EP4586291A1 16/07/2025
Applicant: 
ASAHI CHEMICAL IND [JP]
KOMATSU MFG CO LTD [JP]
Asahi Kasei Kabushiki Kaisha,
Komatsu Ltd
EP_4586291_PA

Absstract of: EP4586291A1

The present disclosure provides a nonaqueous lithium electricity storage element having high high-temperature cycle durability. The nonaqueous lithium electricity storage element comprises a positive electrode including a positive-electrode active material layer, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions. The positive-electrode active material layer comprises a positive-electrode active material and an alkali-metal compound. The negative electrode includes a negative-electrode active material layer, the surface of which, when photographed in the state of being not exposed to the air with a scanning electron microscope at a magnification of 100 diameters, gives a secondary-electron image. Binarizing the pixels of the secondary-electron image by lightness gives an image in which a light region and a plurality of dark regions corresponding to deposits formed on the surface of the negative-electrode active material layer are present. When one pixel is taken as 1.46 µm, the areas of the individual dark regions have a maximum value S pixel<sup>2</sup> of 4,000 or less.

CALIBRATION METHOD FOR STATE OF CHARGE, AND BATTERY SYSTEM PROVIDING SAME

Publication No.:  EP4585946A1 16/07/2025
Applicant: 
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
EP_4585946_PA

Absstract of: EP4585946A1

A battery system includes: a storage that stores, at each predetermined storage period, mapping data that map an SOC and a first open voltage; and a controller that performs: when a number of times of storing the mapping data reaches a predetermined reference number of times so that a calibration period arrives, estimating a first relationship graph between a plurality of SOCs and a plurality of open circuit voltages; calculating a plurality of relationship graphs by reflecting a plurality of preset error values in the first relationship graph; calculating a summed value of distances between each of the plurality of relationship graphs and the mapping data; determining an error value corresponding to a minimum value among a plurality of summed values to be a final error value; and determining whether the final error value falls within a predetermined reference range, to determine whether to calibrate an initial SOC value.

ADHESIVE COMPOSITION, LAMINATE, PACKAGING MATERIAL, AND PACKAGING MATERIAL FOR BATTERY CASES

Publication No.:  EP4585660A1 16/07/2025
Applicant: 
MITSUI CHEMICALS INC [JP]
Mitsui Chemicals, Inc
EP_4585660_PA

Absstract of: EP4585660A1

An adhesive composition includes a crystalline modified olefin polymer, an acid anhydride monomer, and a cross-linking agent. The crystalline modified olefin polymer is obtained by modifying a crystalline α-olefin polymer having 2 to 20 carbon atoms with a monomer having a functional group capable of reacting with an epoxy group or an oxazoline group. The acid anhydride monomer has a ring structure and two or more acid anhydride groups. The cross-linking agent includes an epoxy compound and/or an oxazoline compound.

BATTERY ELECTRODE GRAPHITE DISPERSION

Publication No.:  EP4586342A1 16/07/2025
Applicant: 
MITSUBISHI PENCIL CO [JP]
MITSUBISHI PENCIL COMPANY, LIMITED
EP_4586342_A1

Absstract of: EP4586342A1

Provided is a graphite dispersion for a battery electrode, which is suitable for production of a battery electrode of a lithium ion battery or the like. The graphite dispersion for a battery electrode of the present disclosure includes at least graphite particles having an average particle size of 5 to 50 µm, a dispersing agent, and water.

ELECTRIC POWER CONVERSION DEVICE AND PROGRAM

Publication No.:  EP4586488A1 16/07/2025
Applicant: 
DENSO CORP [JP]
DENSO CORPORATION
EP_4586488_PA

Absstract of: EP4586488A1

A power conversion apparatus includes: an upper arm switch (SWH) and a lower arm switch (SWL) that are connected in series; a first capacitor (21) that is electrically connected in parallel to the upper arm switch and the lower arm switch; a coil (11) of which a first end side is electrically connected to a connection point between the upper arm switch and the lower arm switch; a second capacitor (90); a high-potential-side electrical path (22H) that is electrically connected to the upper arm switch; and a low-potential-side electrical path (22L) that is electrically connected to the lower arm switch. One of the high-potential-side electrical path and the low-potential-side electrical path and a second end side of the coil are electrically connected via the second capacitor. The other of the high-potential-side electrical path and the low-potential-side electrical path and the second end side of the coil are electrically connected via a power storage unit (33). The power conversion apparatus includes a control unit (100) that performs switching of the upper arm switch and the lower arm switch.

DETERIORATION INHIBITION CONTROL SYSTEM, DETERIORATION INHIBITION CONTROL METHOD AND DETERIORATION INHIBITION CONTROL PROGRAM, AND RECORDING MEDIUM HAVING DETERIORATION INHIBITION CONTROL PROGRAM DESCRIBED THEREON

Publication No.:  EP4586447A1 16/07/2025
Applicant: 
PANASONIC IP MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd
EP_4586447_A1

Absstract of: EP4586447A1

In a deterioration inhibition control system, a data obtainment unit obtains battery data including a voltage and an electric current of a secondary battery. A deterioration estimation unit estimates, based on the battery data of the secondary battery, a rate of decrease in an excess capacity of a positive electrode from an initial excess capacity to a current excess capacity of the positive electrode and a rate of decrease in an excess capacity of a negative electrode from an initial excess capacity to a current excess capacity of the negative electrode. When the rate of decrease in the excess capacity of the positive electrode is greater than the rate of decrease in the excess capacity of the negative electrode, a charging/discharging control unit switches charging/discharging control to charging/discharging control that prioritizes deterioration inhibition for the positive electrode, and when the rate of decrease in the excess capacity of the negative electrode is greater than the rate of decrease in the excess capacity of the positive electrode, the charging/discharging control unit switches the charging/discharging control to charging/discharging control that prioritizes deterioration inhibition for the negative electrode.

BATTERY CELL, BATTERY, ELECTRICAL APPARATUS, AND MANUFACTURING METHOD FOR BATTERY CELL

Publication No.:  EP4585351A1 16/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
Contemporary Amperex Technology (Hong Kong) Limited
EP_4585351_A1

Absstract of: EP4585351A1

This application provides a battery cell, a battery, an electrical device, and a method for preparing a battery cell. The battery cell includes a shell and an electrode assembly. The shell provides an accommodation space. The shell includes a first plate portion and a second plate portion. The first plate portion is welded to the second plate portion to form a molten pool structure and welding pores located in the molten pool structure. The electrode assembly is accommodated in the accommodation space. A thickness of the first plate portion is greater than a thickness of the second plate portion. At least a part of the welding pores are located in the first plate portion. In some embodiments of this application, the welding process of the first plate portion and the second plate portion is adjusted, so that at least a part of the welding pores can be located in the first plate portion. Because at least a part of the welding pores can be located in the first plate portion, the number of welding pores located in the second plate portion is reduced, thereby reducing the impact caused by the welding pores onto strength of the second plate portion, and improving reliability of the battery cell in use.

COMPOSITE POROUS MATERIAL AND USE THEREOF, SILICON-BASED COMPOSITE MATERIAL, NEGATIVE ELECTRODE, AND BATTERY

Publication No.:  EP4586338A1 16/07/2025
Applicant: 
LANXI ZHIDE ADVANCED MAT CO LTD [CN]
Lanxi Zhide Advanced Materials Co., Ltd
EP_4586338_PA

Absstract of: EP4586338A1

The present invention provides a composite porous material and use thereof, a silicon-based composite material, a negative electrode and a battery, and specifically relates to the field of secondary battery technologies. The composite porous material contains composite porous material particles, and the composite porous material particles are obtained by compounding two (A and B) or more porous materials of different pore structures; distribution of the porous material A and the porous material B in the composite porous material particles is not limited; and a pore volume of the porous material A is greater than that of the porous material B. The composite porous material provided in the present invention is obtained by compounding two materials with different pore volumes, so that a pore volume size of the prepared composite porous material has a gradient difference, which facilitates controlling load of a material in pores and solving material change caused by the load.

CHARGING CONTROL SYSTEM, CHARGING CONTROL METHOD AND CHARGING CONTROL PROGRAM, AND STORAGE MEDIUM ON WHICH CHARGING CONTROL PROGRAM IS WRITTEN

Publication No.:  EP4586446A1 16/07/2025
Applicant: 
PANASONIC IP MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd
EP_4586446_A1

Absstract of: EP4586446A1

An acquisition unit of a charging control system acquires battery data including at least one of a current flowing through a battery and a temperature of the battery when the battery is charged. A detector thereof detects an abnormal phenomenon of the battery based on at least one of a behavior of the current and a behavior of the temperature when the battery is charged. A charging current changer thereof changes a current rate when the battery is charged next time to a value obtained by multiplying α (0 < a < 1) by the current rate when the abnormal phenomenon of the battery is detected.

BATTERY PACK

Publication No.:  EP4586385A1 16/07/2025
Applicant: 
PANASONIC ENERGY CO LTD [JP]
Panasonic Energy Co., Ltd
EP_4586385_PA

Absstract of: EP4586385A1

A battery pack that can smoothly exhaust high-temperature and high-pressure gas to outside even if high-temperature and high-pressure gas is exhausted from a secondary battery cell inside the battery pack. Battery pack 100 includes a plurality of secondary battery cells 1, and outer covering case 10 housing the plurality of secondary battery cells 1. Outer covering case 10 includes gas exhaust hole 13 in a part thereof, and outer covering case 10 includes, inside thereof, an exhaust guide 6 defining gas guiding path 34 that guides gas to the gas exhaust hole 13 when the gas is released from any one of the plurality of secondary battery cells, and exhaust guide 6 includes inclined wall 18 inclined from an orientation facing the direction in which the gas is exhausted.

BATTERY PACK

Publication No.:  EP4586382A1 16/07/2025
Applicant: 
PANASONIC ENERGY CO LTD [JP]
Panasonic Energy Co., Ltd
EP_4586382_PA

Absstract of: EP4586382A1

As a battery pack in which battery blocks are stacked in multiple layers, a battery pack is provided the thickness of which can be reduced even while space for gas ducts is secured. Battery pack 100 includes: first battery block 20A and second battery block 20B each including a plurality of secondary battery cells 1; spacer 30 disposed between first battery block 20A and second battery block 20B stacked; and outer covering case 10 that stores first battery block 20A, second battery block 20B, and spacer 30. Spacer 30 separates first battery block 20A and second battery block 20B from each other and includes partition 32 that defines first space 31A facing first battery block 20A and second space 31B facing second battery block 20B. Partition 32 includes fracture region 33 at least in regions facing secondary battery cell 1.

CYLINDRICAL BATTERY GASKET, AND CYLINDRICAL BATTERY PROVIDED WITH SAID GASKET

Nº publicación: EP4586375A1 16/07/2025

Applicant:

FDK CORP [JP]
FDK Corporation

EP_4586375_PA

Absstract of: EP4586375A1

A cylindrical battery gasket (32) has insulation properties and is to be fitted with a sealing body (24) for sealing an opening of a bottomed exterior can (10) for a cylindrical battery. The gasket has a bottom part, and a cylindrical circumferential wall rising upwardly from a peripheral portion of the bottom part. An inclined surface (32A) is provided to the entire circumference of the outer circumference portion of the gasket in a manner such that the outer diameter of the circumferential wall increases upward and becomes larger than the inner diameter of an opening end part (10A) of the exterior can. The circumferential wall has a shape in which the thickness of the wall gradually increases toward the upper portion of the wall.

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