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RECHARGEABLE BATTERY, MANUFACTURING METHOD THEREOF, AND FUNCTIONAL PARTICLE MANUFACTURING APPARATUS

Resumen de: EP4804243A2

A rechargeable battery including a positive substrate having a plurality of first protrusions, a negative substrate facing the positive substrate and having a plurality of second protrusions, and a plurality of functional particles between the plurality of first protrusions and the plurality of second protrusions, wherein each of the plurality of functional particles includes a first aggregate having a positive active material, a second aggregate having a negative active material, and a separating aggregate separating the first aggregate and the second aggregate and surrounding the first aggregate and the second aggregate, and the plurality of first protrusions penetrate the separating aggregate and contact the first aggregate and the plurality of second protrusions penetrate the separating aggregate and contact the second aggregate.

SECURE ELEMENT AND OPERATING METHOD

Resumen de: EP4804325A1

0001 In accordance with a first aspect of the present disclosure, a secure element for use in a battery system is provided, the secure element comprising: a seal interface configured to couple the secure element to a seal included in the battery system, wherein the seal is configured to physically protect a battery unit of the battery system; a storage unit configured to store a reference value indicative of a closed state of the seal; a monitoring unit configured to monitor an electrical characteristic of the seal and to compare said electrical characteristic of the seal with the reference value. In accordance with a second aspect of the present disclosure, a corresponding method of operating a secure element is conceived.

INSULATING COMPOSITION FOR RECHARGEABLE LITHIUM BATTERY, ELECTRODE, AND RECHARGEABLE LITHIUM BATTERY MANUFACTURED USING SAME

Resumen de: EP4803557A1

Provided are an insulating composition for a rechargeable lithium battery, an electrode manufactured using the insulating composition, and a rechargeable lithium battery The insulating composition for the rechargeable lithium battery includes a non-aqueous binder, inorganic particles, and a solvent. The non-aqueous binder includes a copolymer of a vinylidene fluoride-based monomer and at least one comonomer different from the vinylidene fluoride-based monomer.

SECONDARY BATTERY

Resumen de: EP4804323A1

0001 Aspects herein relate to a secondary battery (100). The secondary battery may include an electrode assembly (140) configured such that a first electrode plate (142), a second electrode plate (144), and a separator (146) are wound together, a case (110) configured to receive the electrode assembly (140) therein, a cap assembly (130) configured to seal the case (110), and a composite current collecting plate (150) located between the electrode assembly (140) and the cap assembly (130), the composite current collecting plate (150) having a plurality of lead tabs (154, 156) integrally formed thereon and being electrically connected to the first electrode plate (142) and to the cap assembly (130), the plurality of lead tabs (154, 156) being connected to the cap assembly (130).

HIGH ENERGY DENSITY BATTERIES-ENGINE HYBRID SYSTEM

Resumen de: EP4804295A1

0001 A hybrid propulsion system includes an engine which includes a metal-air battery pack, a combustion chamber, and a propulsion power bus. The propulsion power bus is configured to receive energy from the metal-air battery pack and the combustion chamber, regulate voltage of the engine, manage an electric load of the engine, monitor electrical system faults or abnormalities, manage the heat generated within the engine, and distribute a stable and reliable power supply to propulsion-related components, such as the propeller or turbine.

BATTERY SYSTEM

Resumen de: EP4803915A1

A battery system 100 disclosed here includes a battery cell 10, a temperature sensor 60, a reference power supply 80, a first detection resistor 111, a second detection resistor 112, and a short circuit detector 120. The temperature sensor 60 is attached to the battery cell 10 via an insulating member and measures the temperature of the battery cell 10. The reference power supply 80 applies a reference voltage Vref to the temperature sensor 60. The first detection resistor 111 is located between the reference power supply 80 and the temperature sensor 60. The second detection resistor 112 is located between ground (GND) of the battery cell 10 and the temperature sensor 60. The short circuit detector 120 performs a first voltage acquisition process, a second voltage acquisition process, and a short circuit detection process.

POSITIVE ELECTRODE SLURRY, POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, AND METHOD FOR MANUFACTURING THE SAME

Resumen de: EP4804287A1

0001 The present disclosure relates to a positive electrode slurry, a positive electrode for rechargeable lithium battery, and a method for manufacturing a positive electrode for a rechargeable lithium battery. A positive electrode slurry includes a positive electrode active material, a conductive material, a binder, and an additive for preventing gelation. The positive electrode active material includes a nickel-based first positive electrode active material having a layered structure, and a phosphate-based second positive electrode active material. A weight ratio of the first positive electrode active material to the positive electrode active material is in a range of about 50 wt % to about 95 wt %. The additive for preventing gelation includes at least one of oxalic acid, succinic acid, malic acid, fumaric acid, or a combination thereof.

ROLLING ROLL, METHOD FOR MANUFACTURING ROLLING ROLL, AND METHOD FOR MANUFACTURING ELECTRODE USING SAME

Resumen de: EP4803656A1

0001 A rolling roll according to one embodiment of the present disclosure comprises: a roll base material; and a chromium-containing plating layer formed on the roll base material, with the maximum length of the cracks formed on the surface being 5 µm or less. 0002 A rolling roll according to another embodiment comprises a roll base material; a chromium-containing plating layer formed on the roll base material, and a first coating layer formed on the chromium-containing plating layer and comprising titanium nitride. 0003 A method for manufacturing a rolling roll according to another embodiment comprises the steps of: forming a surface irregularity portion on the surface of a roll base material; forming a chromium-containing plating layer on the roll base material using a plating solution containing a chromium-containing raw material and sulfuric acid; and coating a metal nitride layer on the chromium-containing plating layer, wherein in the forming the chromium-containing plating layer, the plating solution further comprises a sulfonic acid-based organic catalyst, or plating is performed in a state where the plating solution is heated to a temperature of 65°C or more to 90°C or less. 0004 A method for manufacturing an electrode according to a further embodiment comprises the steps of: forming an electrode active material layer on a current collector; and rolling the electrode active material layer using the rolling roll.

BATTERY PACK AND ELECTRIC DEVICE

Resumen de: EP4804294A1

0001 The application provides a battery pack and an electrical device. The battery pack includes a plurality of liquid cooling plates, a plurality of side frames, and a plurality of battery modules. The plurality of the liquid cooling plates are arranged sequentially and spaced apart along a gravitational direction. Each side frame is disposed between adjacent two of the liquid cooling plates, and each side frame has two ends connected to two of the liquid cooling plates. The plurality of the side frames and the plurality of the liquid cooling plates enclose and form a plurality of battery compartments. The plurality of the battery modules are respectively installed in the plurality of the battery compartments, with two ends of each battery module, arranged oppositely along the gravitational direction, thermally connected to the liquid cooling plate.

SPACER FOR BATTERY CELL, AND PRISMATIC BATTERY CELL

Resumen de: WO2026132730A1

The invention relates to a spacer (15) intended to be positioned between a cover (6) and a terminal (2, 3) of a prismatic battery cell (1), the spacer (15) comprising a main body (60) and having a lower face (fi60) intended to come into contact with the cover (6), and an upper face (fs60) intended to come into contact with the terminal (2, 3); the spacer (15) comprising, on its lower face (fi60), a raised positioning element (67) in the form of a cross, intended to form-fittingly cooperate with a positioning element (14) delimited by the cover (6), in such a way as to prevent the cover (6) and the spacer (15) from moving in translation and rotation in relation to each other. The invention also relates to an assembly (5), and to a battery cell (1) comprising such a spacer (15).

ELECTRODE ASSEMBLY HOLDER AND ELECTRODE TRAY COMPRISING SAME

Resumen de: EP4804264A1

0001 According to exemplary embodiments, an electrode assembly holder is provided. The electrode assembly holder may include: a sidewall portion having a hollow cylindrical shape, wherein the sidewall portion includes a first portion defining an accommodating space, a second portion defining a discharge space, and a third portion interposed between the first portion and the second portion; and a plurality of bridges connecting the third portion of the sidewall portion and intersecting each other at an intersection portion.

ELECTRODE ASSEMBLY HOLDER AND ELECTRODE TRAY COMPRISING SAME

Resumen de: EP4804263A1

0001 According to exemplary embodiments, an electrode assembly holder is provided. The electrode assembly holder includes: a hollow cylindrical side wall part, wherein the side wall part includes a first portion defining an accommodation space, a second portion defining a discharge space, and a third portion interposed between the first portion and the second portion; a support surrounded by the third portion and spaced apart from the third portion; and bridges connecting the third portion and the support.

NEGATIVE ELECTRODE CASE FOR ALKALINE PRIMARY BUTTON BATTERY, AND ALKALINE PRIMARY BUTTON BATTERY

Resumen de: EP4804305A1

A negative electrode can (40) includes a top portion (42) and a negative-electrode-can peripheral wall portion (44), and is inserted into a positive electrode can (20). An inner cylindrical portion (45) of the negative-electrode-can peripheral wall portion (44) includes a first curved portion (51) extending in a curved manner downward from an outer peripheral edge of the top portion (42), a second curved portion (52) extending in a curved manner outward in a radial direction from a lower edge of the first curved portion (51), and a third curved portion (53) extending in a curved manner downward from an outer peripheral edge of the second curved portion (52). A radius of curvature of an outer surface (52a) of the second curved portion (52) in a longitudinal cross section is larger than a radius of curvature of an inner surface (51a) of the first curved portion (51) in the longitudinal cross section and a radius of curvature of an inner surface (53a) of the third curved portion (53) in the longitudinal cross section. In the longitudinal cross section, an angle θ formed between a common tangent line (L) of the inner surface (51a) of the first curved portion (51) and the inner surface (53a) of the third curved portion (53) and an axial direction is 40° or more and less than 60°.

SODIUM ION BATTERY CELL, POSITIVE ELECTRODE SHEET, PREPARATION METHOD THEREFOR AND RELATED DEVICE

Resumen de: EP4804257A1

A sodium ion battery cell, a positive electrode sheet, a preparation method therefor and a related device. The sodium ion battery cell comprises a positive electrode sheet, the positive electrode sheet comprising a positive electrode active material and a solid electrolyte interphase film at least bonded to the surface of the positive electrode active material, and the solid electrolyte interphase film comprising one or multiple cations from Na⁺, Li⁺, K⁺ and Ca²⁺. The solid electrolyte interphase film bonded to the surface of the positive electrode active material comprises cations such as Na^-, Li⁺, K⁺ and Ca²⁺, and the cations can participate in electrochemical reactions of the sodium ion batteries to provide reversible capacity, so as to compensate for the capacity loss caused by the passivation of the positive electrode active material, thus improving the cycle performance of batteries. Additionally, the solid electrolyte interphase film comprising the cations helps to reduce the impedance of batteries, thus further improving the cycle performance of batteries.

IRON PHOSPHATE AND PREPARATION METHOD THEREFOR, PRODUCTION DEVICE, AND LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE MATERIAL

Resumen de: EP4803481A1

The present application provides an iron phosphate, a preparation method and production device thereof, and a lithium iron phosphate cathode material, which relates to the field of iron phosphate technology. The present application includes spherical secondary particles, the secondary particles are composed of primary particles, the primary particles have an octahedral structure, and an average side length of the primary particles is 200 nm-800 nm. In the present application, the provided iron phosphate has a high tap density, and the lithium iron phosphate cathode material made from this iron phosphate has good electrochemical performance.

BATTERY PACK AND SPACER

Resumen de: EP4804311A1

0001 Disclosed is a battery pack in which a spacer is disposed between unit cells, the battery pack being characterized in that the spacer includes an exterior material and an inclusion material, the exterior material includes a metal layer, and the metal layer is not in contact with the unit cells at a temperature of from 25 to 500°C. It is possible to provide a highly safe spacer and a battery pack incorporating the spacer.

ALL-SOLID RECHARGEABLE BATTERY

Resumen de: EP4804282A1

0001 An all-solid-state rechargeable battery is provided. The all-solid-state rechargeable battery includes a negative electrode; a solid electrolyte layer stacked on the negative electrode; a positive electrode provided with a positive active material layer on a positive electrode current collector and stacked on the solid electrolyte layer; and an insulating gasket positioned on the outside between the positive active material layer and the solid electrolyte layer, wherein the positive active material layer includes a high-density area corresponding to the gasket and compressed by the penetration of the gasket, and a low-density area provided inside the high-density area.

EARLY FIRE DETECTION DEVICE AND METHOD FOR RECHARGEABLE LITHIUM-ION BATTERIES

Resumen de: US20250131806A1

0000 A device and system thereof to provide early warning and potential shutdown of a charging consumer device including a rechargeable battery (i.e., lithium-ion) in the event of a possible thermal runaway are disclosed herein. Such a device includes a sensor to detect degassing of emitted carbon dioxide or hydrogen gas at a nanoparticle level as an indication of the initiation of such a possible flame presence due to such a thermal runaway event. Such a system thus incorporates such an overall device present within a close proximity to a rechargeable battery (or batteries) as a means to provide an early warning of such a potentially catastrophic situation to permit a user the capability of detaching or unplugging such a rechargeable battery and/or at least the chance to move the consumer device to a safer location. The method of utilizing such a device and system thereof is encompassed herein as well.

BATTERY CELL, BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4804296A1

The present application belongs to the technical field of batteries. Provided are a battery cell, a battery and an electrical device. The battery cell comprises a casing, a cell assembly and an isolation member, the casing being provided with an inner cavity, and the casing comprising a first wall; the cell assembly is arranged in the inner cavity; the isolation member is arranged between the first wall and the cell assembly, and the isolation member separately abuts against the first wall and the cell assembly; the isolation member comprises a metal layer. The present application aims to solve the technical problem of high thermal runaway risk of batteries in the prior art.

CALENDERED CATHODE COMPOSITIONS AND METHODS OF MAKING THEREOF

Resumen de: EP4804244A2

Provided herein are compositions and methods for calendering cathode materials for lithium battery construction.

BATTERY CELLS AND BATTERY PACK

Resumen de: EP4804300A2

0001 The present utility model provides a battery cell and a battery pack. The battery cell includes: a casing and a cell core, which is placed inside the casing, wherein the battery cell also includes an additional layer formed by coating, positioned between the cell core and the casing, this additional layer being an insulating material layer. The present utility model can achieve electrical insulation between the cell core and the casing in the battery cell.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4804319A1

0001 A battery cell (10) is provided. The battery cell (10) includes a housing (1), a pressure relief mechanism (6), an electrode assembly (2), and a separator (7). The housing (1) has a first wall (111). The pressure relief mechanism (6) is provided on the housing (1). The electrode assembly (2) is provided in the housing (1). The separator (7) is provided between the electrode assembly (2) and the first wall (111), the separator (7) is configured to separate the electrode assembly (2) and the first wall (111), and the separator (7) is provided with an exhaust passage (8). The exhaust passage (8) is configured to guide gas in the battery cell (10) to the pressure relief mechanism (6). The separator (7) includes a first portion (711) and a second portion (712). A melting point of the first portion (711) is higher than a melting point of the second portion (712). At least a portion of the exhaust channel (8) is defined by the first portion (711). The battery cell (10) reduces the risk that gas in the battery cell (10) is hindered from flowing to the pressure relief mechanism (6) due to melting of the separator (7) melting caused by thermal runaway of the battery cell (10), thereby improving the reliability of batteries.

SOLID-STATE BATTERY AND MANUFACTURING METHOD THEREFOR

Resumen de: EP4804272A1

0001 The present disclosure provides additive materials to be added to sulfide-containing solid electrolyte materials for use in solid state batteries, solid state batteries using such additive materials in their solid electrolyte materials, and methods of making such solid state batteries. The additive materials provided herein allow the solid state batteries using such additive materials to operate under relatively lower pressures compared to solid state batteries without such additive materials.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4804270A1

A non-aqueous electrolyte secondary battery (1) includes a positive electrode (10) containing a lithium manganese oxide (LMO) as a positive electrode active material, a negative electrode (20) containing lithium (Li) and SiO_X (0 ≤ X < 2) as a negative electrode active material, and an electrolyte solution (50) containing an organic solvent and a supporting salt. A capacity balance represented by a capacity of the negative electrode and a capacity of the positive electrode {negative electrode capacity (mAh)/positive electrode capacity (mAh)} is in a range of 1.56 to 2.51. A molar ratio (Li/SiOx) of the lithium (Li) to the SiO_X (0 ≤ X < 2) in the negative electrode active material is in a range of 3.8 to 4.9. A molar ratio (Li/LMO) of the lithium (Li) to the lithium manganese oxide (LMO) is 8.0 or less.

CYLINDRICAL BATTERY

Nº publicación: EP4804301A1 09/09/2026

Solicitante:

PANASONIC IP MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd.

Resumen de: EP4804301A1

Provided is a cylindrical battery comprising: an electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween; a cylindrical outer can (20) that has a bottom part (21) and accommodates the electrode body; and a sealing body that closes an opening in the outer can (20). The cylindrical battery is characterized in that the surface area of an outer surface (21A) of the bottom part (21) is 1.2 times or more the projection area of the outer surface (21A) of the bottom part (21).