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SECONDARY BATTERY AND PREPARATION METHOD THEREFOR, AND ELECTRIC DEVICE

NºPublicación:  WO2025222726A1 30/10/2025
Solicitante: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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WO_2025222726_PA

Resumen de: WO2025222726A1

A secondary battery and a preparation method therefor, and an electric device. The secondary battery includes a positive electrode sheet, the positive electrode sheet includes a positive electrode active material, and the positive electrode active material includes a matrix material and a coating layer at least partially covering the matrix material. The coating layer includes a first coating layer and a second coating layer, wherein the first coating layer is located on the surface of the matrix material, and the second coating layer is located on the surface of the first coating layer, with the first coating layer comprising a lithium-supplementing material, and the second coating layer comprising a reductive material; or, the first coating layer comprising a reductive material, and the second coating layer comprising a lithium-supplementing material. The secondary battery has excellent cycle performance and a long service life.

BATTERY DEVICE AND ELECTRIC DEVICE

NºPublicación:  WO2025222861A1 30/10/2025
Solicitante: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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WO_2025222861_PA

Resumen de: WO2025222861A1

A battery device (100) and an electric device. The battery device comprises: a case (10); a battery cell assembly (20) accommodated in the case; and a heat exchange assembly (30) accommodated in the case. The heat exchange assembly comprises: a heat exchange main body (31) comprising a plurality of heat exchange flow channels (301); and current collecting structures (32) arranged at two ends of the heat exchange main body, each current collecting structure comprising a blocking member (321), a current collecting member (322) and an adapter member (323), wherein the blocking member blocks at least one heat exchange flow channel, the current collecting member is provided with a current collecting cavity (3221), the current collecting member is in sealing fit with and connected to the heat exchange main body by means of the adapter member, the current collecting member is provided with a communication port (322a) communicated with the current collecting cavity, the communication port can be used for allowing the entry/exit of a heat exchange medium, and the adapter member is formed on the heat exchange main body and the current collecting member.

FILM INSPECTION MECHANISM, COATING DEVICE, AND FILM COATING METHOD

NºPublicación:  WO2025222706A1 30/10/2025
Solicitante: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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WO_2025222706_PA

Resumen de: WO2025222706A1

A film inspection mechanism (100), comprising: a housing assembly (10), a weight measurement assembly (30), a moisture measurement member (20), and an isolation member (40). The housing assembly (10) defines a measurement cavity (13) used for placing a film under inspection; the weight measurement assembly (30) is mounted in the housing assembly (10) and is used for acquiring the weight of the film under inspection; the moisture measurement member (20) is mounted in the housing assembly (10) and is used for acquiring the moisture of the film under inspection; the housing assembly (10) comprises two housings; the weight measurement assembly (30) comprises a transmitting member (31) and a receiving member (32), and the transmitting member (31) and the receiving member (32) are respectively provided on the two housings; the isolation member (40) is provided on the housing assembly (10) provided with the moisture measurement member (20) and is located between the moisture measurement member (20) and the transmitting member (31) or the receiving member (32). Also provided are a coating device having the film inspection mechanism (100), and a film coating method.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

NºPublicación:  WO2025225437A1 30/10/2025
Solicitante: 
PANASONIC INTELLECTUAL PROPERTY MAN CO LTD [JP]
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WO_2025225437_PA

Resumen de: WO2025225437A1

Provided is a non-aqueous electrolyte secondary battery comprising: an electrode body in which a belt-like first electrode (12) and a belt-like second electrode are wound in a longitudinal direction via a separator; and a non-aqueous electrolyte. The first electrode (12) has a first electrode core body (40) and a first electrode mixture layer (42) disposed on the first electrode core body (40). At one end of the electrode body of the first electrode (12) in the axial direction, a first electrode core body exposed part (44) is provided, in which the first electrode mixture layer (42) is not disposed and the first electrode core body (40) is exposed. On the surface of the first electrode core body exposed part (44), a plurality of resin layers (50) are disposed at intervals in the longitudinal direction of the first electrode (12).

NEGATIVE ELECTRODE ACTIVE MATERIAL AND FLUORIDE ION SECONDARY BATTERY

NºPublicación:  WO2025225441A1 30/10/2025
Solicitante: 
PANASONIC ENERGY CO LTD [JP]
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WO_2025225441_PA

Resumen de: WO2025225441A1

A negative electrode active material according to the present disclosure is a negative electrode active material for a fluoride ion secondary battery, and contains scandium fluoride that has a crystallite size of less than 63 nm. A fluoride ion secondary battery according to the present disclosure comprises: a positive electrode 2; a negative electrode 4; and an electrolyte layer 3 that is disposed between the positive electrode 2 and the negative electrode 4. The negative electrode 4 contains the negative electrode active material according to the present disclosure. The negative electrode active material may additionally contain at least one metal that is selected from the group consisting of alkali metals and alkaline earth metals.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

NºPublicación:  WO2025225388A1 30/10/2025
Solicitante: 
PANASONIC INTELLECTUAL PROPERTY MAN CO LTD [JP]
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WO_2025225388_PA

Resumen de: WO2025225388A1

This non-aqueous electrolyte secondary battery is characterized in that: a first electrode (12) comprises a first electrode core body (40) and a first electrode mixture layer (42) disposed on the first electrode core body (40); the first electrode mixture layer (42) is not disposed on one end in the axial direction of an electrode body in the first electrode (12); there is provided a first electrode core body exposure part (44) where the first electrode core body (40) is exposed; and the surface of the first electrode core body exposure part (44) is provided with a functional layer (50) including a coating layer (52) that covers at least a portion of the first electrode core body exposure part (44), and large-diameter particles (54) that have a volume-basis average particle size which is greater than the average thickness of the coating layer (52).

SOLID ELECTROLYTE MATERIAL, POSITIVE ELECTRODE MATERIAL, BATTERY, AND METHOD FOR PRODUCING SOLID ELECTROLYTE MATERIAL

NºPublicación:  WO2025225308A1 30/10/2025
Solicitante: 
PANASONIC INTELLECTUAL PROPERTY MAN CO LTD [JP]
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WO_2025225308_PA

Resumen de: WO2025225308A1

A solid electrolyte material according to the present disclosure contains Li, Ti, Al, and F, and has a peak in a first range in which the diffraction angle 2θ is 13.7° to 14.7° inclusive in an X-ray diffraction pattern that is obtained by a X-ray diffraction measurement using Cu-Kα rays. In the X-ray diffraction pattern, a peak may be present in at least one range that is selected from the group consisting of a second range in which the diffraction angle 2θ is 20.9° to 21.9° inclusive, a third range in which the diffraction angle 2θ is 41.2° to 42.2° inclusive, and a fourth range in which the diffraction angle 2θ is 53.3° to 54.3° inclusive.

LITHIUM IRON PHOSPHATE BATTERY COATED ELECTRODE AND METHOD

NºPublicación:  US2025336964A1 30/10/2025
Solicitante: 
GM GLOBAL TECH OPERATIONS LLC [US]
GM Global Technology Operations LLC
US_2025336964_PA

Resumen de: US2025336964A1

A lithium iron phosphate battery and method for making the battery is provided. The lithium iron phosphate battery includes a lithium iron phosphate (LFP) cathode, a lithium anode, and a liquid electrolyte. The lithium iron phosphate (LFP) cathode has a coating adhered thereto. The coating includes a first material more than 70% by weight and a second material less than 30% by weight. The first material has a mean particle size (D50) of 10 micrometers (μm), and the second material has a mean particle size (D50) of 1 μm. The liquid electrolyte transports positively charged ions between the lithium anode and the LFP cathode. The liquid electrolyte includes between 1.0 and 1.5 M LiPF6 and between 0 and 0.5 M LiFSI.

SECONDARY BATTERY, AND BATTERY MODULE, BATTERY PACK AND APPARATUS COMPRISING THE SAME

NºPublicación:  US2025336962A1 30/10/2025
Solicitante: 
CONTEMPORARY AMPEREX TECH HONG KONG LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
US_2025336962_PA

Resumen de: US2025336962A1

The embodiments of this application provide a secondary battery, and a battery module, a battery pack and an apparatus including the same. Specifically, this application provides a secondary battery, which includes a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode film disposed on at least one surface of the negative electrode current collector. The negative electrode film includes a negative electrode active material, a conductive agent, and a binder. The negative electrode active material includes SiOx (0

ELECTROLYTE-FREE LIxSI/SI ANODE ELECTRODE FOR ALL-SOLID-STATE BATTERY CELL

NºPublicación:  US2025336961A1 30/10/2025
Solicitante: 
GM GLOBAL TECH OPERATIONS LLC [US]
GM GLOBAL TECHNOLOGY OPERATIONS LLC
US_2025336961_PA

Resumen de: US2025336961A1

A method for manufacturing a battery cell includes providing an anode active material layer including silicon particles and PTFE binder; and pressing the anode active material layer and an anode current collector together to form an anode electrode. The anode current collector comprises a composite material comprising a first material and lithium arranged on at least one side of the first material and in contact with the anode active material layer.

Negative Electrode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same

NºPublicación:  US2025336957A1 30/10/2025
Solicitante: 
SK ON CO LTD [KR]
SK On Co., Ltd
US_2025336957_A1

Resumen de: US2025336957A1

Provided are a negative electrode for a lithium secondary battery and a lithium secondary battery including the same, the negative electrode for a lithium secondary battery including a current collector; a first negative electrode active material layer disposed on the current collector and including a first graphite-based active material containing artificial graphite and natural graphite, and a first silicon-based active material; and a second negative electrode active material layer disposed on the first negative electrode active material layer and including a second graphite-based active material containing artificial graphite and natural graphite, and a second silicon-based active material. The first graphite-based active material has a content of the artificial graphite equal to or less than that of the natural graphite, and the second graphite-based active material has a content of the artificial graphite greater than that of the natural graphite.

MATRIX, ANODE MATERIAL, AND SECONDARY BATTERY

NºPublicación:  US2025333310A1 30/10/2025
Solicitante: 
BTR NEW MAT GROUP CO LTD [CN]
BTR NEW MATERIAL GROUP CO., LTD
US_2025333310_PA

Resumen de: US2025333310A1

A matrix, an anode material, and a secondary battery. The matrix has pores. The matrix includes a carbon material. An average value D0 of particle sizes of the matrix is 5.5 μm to 9.5 μm, and a standard deviation S0 of the particle sizes of the matrix is 0.08 to 0.35. The anode material includes the matrix and an active substance. The matrix has the pores, and at least partial active substance is disposed in the pores of the matrix. An average value D1 of particle sizes of the anode material is 5.5 μm to 9.5 μm, and a standard deviation S1 of the particle sizes of the anode material is 0.1 to 0.35.

METHOD FOR PRODUCING LITHIUM DIFLUOROPHOSPHATE

NºPublicación:  US2025333318A1 30/10/2025
Solicitante: 
ECOPROHN CO LTD [KR]
ECOPROHN CO., LTD
US_2025333318_PA

Resumen de: US2025333318A1

A method for producing lithium difluorophosphate includes reacting a fluorine source and a phosphoryl halide represented by Formula 1 in a first organic solvent to obtain a reaction product and reacting the reaction product, a lithium source, and an oxygen source in a second organic solvent. Each of the fluorine source, the lithium source and the oxygen source may have a moisture content of less than 1,000 ppm based on the weight thereof.

MODULE PRESSURIZATION AND RESTING LINE AND SCHEDULING METHOD THEREFOR

NºPublicación:  US2025333253A1 30/10/2025
Solicitante: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
US_2025333253_PA

Resumen de: US2025333253A1

A module pressurization and resting line includes a plurality of pressurization lines, a resting line, and a resting transfer device, and each pressurization line is provided with a pressurization output end; the resting line is provided with a resting input end; the resting transfer device includes a first transfer turntable and a second transfer turntable, where the first transfer turntable is disposed between one of the pressurization output ends and the resting input end, and the first transfer turntable, along its rotational circumferential direction, is capable of being in transfer communication with the resting input end; the second transfer turntable is disposed between the other pressurization output ends and the first transfer turntable, and the first transfer turntable and the second transfer turntable, along their respective rotational circumferential directions, are each provided with a first position and a second position.

GAP FILLER COMPOSITION AND BATTERY PACK

NºPublicación:  US2025333582A1 30/10/2025
Solicitante: 
DONGWOO FINE CHEM CO LTD [KR]
DONGWOO FINE-CHEM CO., LTD
US_2025333582_PA

Resumen de: US2025333582A1

A gap filler composition according to an embodiments includes a siloxane-based resin, a filler, and a catalyst. After application under conditions of 23° C. and 50% relative humidity, the Shore 00 hardness measured after leaving for 60 minutes and the Shore 00 hardness measured after leaving for 120 minutes are in the range of 40 to 70. The gap filler composition can be used to manufacture a vehicle battery pack including a gap filler having improved thermal stability and process properties.

OPERATING SYSTEM FOR MULTIPLE BATTERY SYSTEMS

NºPublicación:  US2025333087A1 30/10/2025
Solicitante: 
STEWART & STEVENSON LLC [US]
STEWART & STEVENSON LLC
US_2025333087_PA

Resumen de: US2025333087A1

A battery system positioned on a locomotive powered by a diesel engine includes a first battery and a second battery, the first battery and the second battery being lithium-ion batteries, wherein the first battery or the second battery are in electrical connection with a starter of the diesel engine. The first battery and second battery each include a control chassis and a plurality of cells, wherein the plurality of cells are arranged into modules. The battery system also includes a battery control panel, the battery control panel including at least one Human Machine Interface (HMI) and a first switch and a second switch, the first switch in electrical communication with the first battery and a second switch, the second switch in electrical communication with the second battery.

SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

NºPublicación:  US2025337121A1 30/10/2025
Solicitante: 
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
US_2025337121_PA

Resumen de: US2025337121A1

Examples of the present disclosure include a separator for a rechargeable lithium battery, and a rechargeable lithium battery including the separator. The separator includes a porous substrate and a coating layer on at least one surface of the porous substrate. The coating layer includes a heat-resistant layer including a binder and a filler, and an adhesive layer including an adhesive binder on the heat-resistant layer. The binder includes a (meth)acryl-based binder including a first structural unit derived from (meth)acrylic acid, (meth)acrylate, or a salt thereof, a second structural unit derived from hydroxyalkyl (meth)acrylate, and a third structural unit derived from (meth)acrylamido sulfonic acid or a salt thereof. The filler includes a mixture of a cubic filler a plate-shaped filler. The adhesive binder includes a fluorine-based adhesive binder having a hydroxyl group or a carboxylic acid group.

RECHARGEABLE BATTERY PACK

NºPublicación:  US2025337126A1 30/10/2025
Solicitante: 
SAMSUNG SDI CO LTD [KR]
Samsung SDI Co., Ltd
US_2025337126_PA

Resumen de: US2025337126A1

A rechargeable battery pack may include: a battery housing including an inner space; a series of unit battery cells accommodated in the inner space; a first bus bar configured to electrically connect the unit battery cells above the unit battery cells; a second bus bar configured to electrically connect the unit battery cells under the unit battery cells and contact a bottom plate of the battery housing in the inner space; and a cooling unit in the battery housing under the second bus bar configured to accommodate a cooling medium to flow therein for cooling the unit battery cells.

ELECTRIC VEHICLE BATTERY ENCLOSURE

NºPublicación:  US2025337083A1 30/10/2025
Solicitante: 
FLEX N GATE ADVANCED PRODUCT DEV LLC [US]
FLEX-N-GATE ADVANCED PRODUCT DEVELOPMENT, LLC
US_2025337083_PA

Resumen de: US2025337083A1

A battery enclosure includes a tub defining an internal volume, a lid, a cross member within the internal volume, and a mounting bracket. The tub has a bottom and a wall integrally formed with the bottom. The lid is configured to couple to the wall to enclose the internal volume. The cross member is coupled to the tub. The mounting bracket is attached to the bottom of the tub and is configured to releasably secure a battery.

BATTERY DEHUMIDIFICATION STRUCTURE AND BATTERY PACK

NºPublicación:  US2025337145A1 30/10/2025
Solicitante: 
EVE ENERGY CO LTD [CN]
EVE ENERGY CO., LTD
US_2025337145_PA

Resumen de: US2025337145A1

A battery dehumidification structure and a battery pack are provided. The battery dehumidification structure includes a shell and a drying assembly. The shell is provided with a first mounting region and a water vapor deposition region. The first mounting region is configured to mount a battery set. The water vapor deposition region is provided with a second mounting region. The drying assembly is arranged in the second mounting region, so as to remove water vapor from the battery set.

BATTERY CELL SUPPORT ASSEMBLY WITH INTEGRATED THERMAL EVENT MITIGATION

NºPublicación:  US2025337079A1 30/10/2025
Solicitante: 
GM GLOBAL TECH OPERATIONS LLC [US]
GM GLOBAL TECHNOLOGY OPERATIONS LLC
US_2025337079_PA

Resumen de: US2025337079A1

A multi-cell rechargeable energy storage system (RESS) includes battery cells with each of the battery cell having a respective cell vent configured to expel gases. A cell holder is configured to support the battery cells and includes a holder body defining apertures arranged in rows. Each aperture is configured to align with and be in fluid communication with the cell vent of one of the battery cells. Thermal event passageways are located adjacent the cell holder with each thermal event passageway extending parallel to a respective row of apertures. A potting material at least partially surrounding the battery cells and a sensor assembly is in each of the thermal event passageways.

METHOD AND SYSTEM FOR QUANTIFYING A COMPOSITION OF A COMPOSITE BATTERY ELECTRODE

NºPublicación:  US2025337024A1 30/10/2025
Solicitante: 
CATERPILLAR INC [US]
Caterpillar Inc
US_2025337024_PA

Resumen de: US2025337024A1

A battery system includes a battery comprising a full cell having a composite electrode with a composition that includes an actual blend ratio of one or more electrode materials; a memory configured to store an optimization table; a measurement circuit coupled to the full cell and configured to measure an actual open circuit voltage (OCV) of the full cell; and at least one processor configured to: calculate a predicted OCV of the full cell that based on the optimization table and one or more optimization parameters, including a predicted blend ratio of the composite electrode, compare the actual OCV with the predicted OCV to generate an error value, compare the error value with a threshold value, determine whether the predicted blend ratio corresponds to the actual blend ratio of the composite electrode based on whether the error value satisfies the threshold value.

HEAT INSULATION SHEET FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY MODULE INCLUDING THE SAME

NºPublicación:  US2025337055A1 30/10/2025
Solicitante: 
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
US_2025337055_PA

Resumen de: US2025337055A1

The present disclosure relates to a heat insulation sheet for a rechargeable lithium battery, and a rechargeable lithium battery module. The heat insulation sheet for a rechargeable lithium battery includes a first base layer, a first aerogel-containing layer, a second aerogel-containing layer, and a third aerogel-containing layer that are stacked together. The first aerogel-containing layer and the third aerogel-containing layer each include a fibrous support, an aerogel, and a binder, and the second aerogel-containing layer includes an aerogel and a binder.

SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

NºPublicación:  US2025337106A1 30/10/2025
Solicitante: 
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
US_2025337106_PA

Resumen de: US2025337106A1

Examples of the present disclosure include a separator for a rechargeable lithium battery, and a rechargeable lithium battery including the separator. The separator for a rechargeable lithium battery includes a porous substrate and a coating layer on at least one surface of the porous substrate. The coating layer includes a binder and a filler. The binder includes a (meth)acryl-based binder including a sulfonate group-containing structural unit. The filler includes a mixture of boehmite and barium titanate in a weight ratio in a range of about 20:80 to about 80:20 with respect to 100 parts by weight of the mixture of boehmite and barium titanate.

SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Nº publicación: US2025337107A1 30/10/2025

Solicitante:

SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD

US_2025337107_PA

Resumen de: US2025337107A1

Examples of present disclosure include a separator for a rechargeable lithium battery and a rechargeable lithium battery including the separator. The separator for a rechargeable lithium battery includes a porous base and a coating layer on at least one surface of the porous base. The coating layer includes a heat-resistant layer including a binder and a filler, and an adhesive layer on the heat-resistant layer and including an adhesive binder. The binder includes a (meth)acryl-based binder including a first structural unit derived from (meth)acrylic acid, (meth)acrylate, or salts thereof, a second structural unit derived from hydroxyalkyl (meth)acrylate, and a third structural unit derived from (meth)acrylamido sulfonic acid or a salt thereof. The filler includes a cubic filler having a particle size D50 ranges from about 50 nm to about 250 nm. The adhesive binder includes a fluorine-based adhesive binder having a carboxylic acid group or a hydroxy group.

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