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POSITIVE ELECTRODE ACTIVE MATERIAL POWDER AND METHOD FOR MANUFACTURING A POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: WO2025078476A1

The present invention relates to a method for reducing a Na-loss in preparing a positive electrode active material powder comprising particles having a substantially octahedral shape, comprising: mixing a Li source, a precursor comprising transition metals and a sintering flux to obtain a mixture; and heating the mixture to obtain a heated material, wherein the transition metals comprise Ni, optionally Co, and optionally Mn, wherein the sintering flux is Na2CO3, and wherein the Na-loss is a difference between a first Na content in the mixture and a second Na content in the heated material, the first and second Na contents being measured via ICP-OES and being relative to a total amount of the transition metals.

NEGATIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR PRODUCING SAME

Resumen de: EP4794025A1

The present invention is a negative electrode active material containing negative electrode active material particles, in which the negative electrode active material particles contain a porous carbon structure, a low-valent nano silicon oxide in an amorphous state is dispersed within the porous carbon structure, the low-valent nano silicon oxide includes states represented by SiOx where "x" is less than 1.0, and the low-valent nano silicon oxide has a particle size of 50 nm or less on average, the particle size being determined by image processing of a cross-sectional TEM image. This provides the negative electrode active material capable of increasing a capacity thereof while maintaining battery characteristics.

BATTERY MODULE AND BATTERY PACK COMPRISING SAME

Resumen de: EP4794092A1

0001 A battery module according to exemplary embodiments may include battery cells, a module frame, and a first thermal barrier, wherein the module frame may accommodate the battery cells, and the module frame includes a top plate including vent holes, and the first thermal barrier may be disposed between the battery cells and the top plate.

BATTERY MANAGEMENT SYSTEM

Resumen de: EP4794166A1

0001 A system for managing battery performs bidirectional charge/discharge active cell balancing of a plurality of battery cells using a single converter, thereby reducing the number of components required for active cell balancing and achieving cost and size reduction of the system for managing battery.

ACCUMULATOR CELL AND LEAD ACCUMULATOR

Resumen de: EP4794051A1

Die Erfindung betrifft eine Akkumulatorzelle für einen Bleiakkumulator, mit einem Zellengehäuse (2) und einem das Zellengehäuse (2) fluiddicht verschließenden Zellendeckel (3), wobei innerhalb des Zellengehäuses (2) einander abwechselnd positive und negative Elektrodenplatten (5, 4) sowie ein die Elektrodenplatten (5, 4) umgebender Elektrolyt angeordnet sind, wobei die positiven und die negativen Elektrodenplatten (5, 4) jeweils an wenigstens einen gemeinsamen Pol (10, 11; 8, 9) mittels jeweiliger Polbrücke (7, 6) elektrisch angeschlossen sind und wobei der positive Pol (10, 11), der über die zugehörige Polbrücke (7) mit den positiven Elektrodenplatten (5) verbunden ist, aus einer Bleilegierung in Form von Hartblei gebildet ist, dadurch gekennzeichnet, dass die Polbrücke (7), die die positiven Elektrodenplatten (5) mit dem positiven Pol (10, 11) verbindet, aus Reinblei gebildet ist, und dadurch, dass eine Rückhalteeinrichtung vorgesehen ist, die dazu eingerichtet ist, vom positiven Pol (10, 11) abgeplatzte Partikel aufzufangen und so einen Kontakt der Partikel mit den Elektrodenplatten (5, 4) zu verhindern.

BATTERY PACK, STRUCTURE, AND METHOD FOR MANUFACTURING MICA PLATE

Resumen de: EP4794087A1

0001 Provided is a battery pack including a mica plate that is resistant to damage and is lightweight. The battery pack of the present invention includes a module with a plurality of battery cells; a case containing the module; and a mica plate disposed between the module and the case and having a first main face and a second main face opposite to the first main face, the battery pack further including a fixing member to fix the mica plate, the mica plate having a first fixing member hole penetrating from the first main face to the second main face, at least one of the module or the case being provided with a connecting member having a second fixing member hole, the fixing member including a head and a body extending from the head, the head of the fixing member being on the first main face of the mica plate, the body of the fixing member passing through the first fixing member hole into the second fixing member hole, thereby fixing the mica plate, the head, in a planar perspective view of the mica plate, covering at least a part of an outline of the first fixing member hole and overlapping the mica plate, an overlapping area, denoted as area S 1, between the head and the mica plate being not less than 5.8 × 10<-6> times an area S2 of the mica plate.

PROTECTIVE PLATE, BATTERY BOX, BATTERY MODULE, AND BATTERY PACK

Resumen de: EP4794084A1

The present application provides a protective plate, a battery box, a battery module, and a battery pack. The protective plate includes a first protective layer, a reinforcement layer, a buffer layer, and a second protective layer stacked along a first direction. The reinforcement layer and the buffer layer are stacked between the first protective layer and the second protective layer. The buffer layer includes multiple first buffer grooves and multiple second buffer grooves, the multiple first buffer grooves and the second buffer grooves are arranged on two opposite sides of the buffer layer, and the multiple first buffer grooves and the multiple second buffer grooves are distributed in a staggered manner.

SECONDARY BATTERY, BATTERY PACK AND ELECTRONIC DEVICE

Resumen de: EP4794070A1

Disclosed are a secondary battery (100), a battery pack (1002), and an electronic device (1000). The secondary battery (100) includes: a housing (200), including an end wall (111) and a side wall (109) surrounding the end wall (111), the end wall (111) having an opening portion (111V); an electrode assembly (120), including positive and negative electrode sheets (10, 20) and a separator (122); an electrode terminal (160), passing through the opening portion (111V) and fixed on the end wall (111); and a current collecting plate (202), disposed between the electrode assembly (120) and the end wall (111) and electrically connecting the electrode assembly (120) and the electrode terminal (160). Along a radial direction of the electrode assembly (120), the electrode assembly (120) includes a first region (Ra) and a second region (Rb). A minimum distance between a surface of the current collecting plate (202) facing the electrode assembly (120) and a first end (16u) of a negative electrode active material layer (16) along a first direction (D1) is L_A mm, L_A mm ≥1.5 mm.

ELECTRODE SHEET, SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4794105A1

An electrode sheet (100), a secondary battery (500), and an electronic device (1000) are provided. The electrode sheet (100) includes: an electrode sheet body (160), including a current collector (110) and an active material layer (130), the current collector (110) has two opposite surfaces, and the two surfaces are respectively coated with active material layers (130); and a tab (150), extending from the electrode sheet body (160), the tab (150) is provided with a second stiffener region (192) and a first stiffener region (191), the second stiffener region (192) is disposed between the first stiffener region (191) and the active material layer (130), a stiffener (190) is disposed in the first stiffener region (191) and the second stiffener region (192), a depth (H1) of the stiffener (190) in the first stiffener region (191) is greater than a depth (H2) of the stiffener (190) in the second stiffener region (192).

SLURRY, POSITIVE ELECTRODE COMPOSITION, BATTERY, AND METHOD FOR PRODUCING SLURRY

Resumen de: EP4794018A1

A slurry containing carbon black, a dispersant, and a dispersion medium, wherein, in a volume-based particle size distribution of the carbon black, a median diameter (D50) is at least 0.5 µm and at most 0.8 µm, a difference (D90 - D10) between a cumulative 90% diameter (D90) and a cumulative 10% diameter (D10) is less than 2 µm, and a total amount of particles having a particle diameter larger than 5 µm is less than 1%, and a ratio (D50'/D50) of a median diameter (D50') of the carbon black when the slurry has been placed at rest for 4 weeks to D50 is less than 1.3.

NEGATIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR PRODUCING SAME

Resumen de: EP4794024A1

0001 The present invention is a negative electrode active material containing negative electrode active material particles, in which the negative electrode active material particles contain a porous carbon structure, silicon and silicon oxide are dispersed in an interior of the porous carbon structure, a low-valent nano silicon oxide in an amorphous state is dispersed at least in a surface layer portion of the interior of the porous carbon structure, the low-valent nano silicon oxide is SiOx, where "x" is less than 1.0, and nano silicon having a crystalline structure is dispersed in the interior of the porous carbon structure, at least in a deep layer portion that is deeper than the low-valent nano silicon oxide. This provides the negative electrode active material capable of increasing capacity thereof while maintaining battery characteristics.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND ELECTRODE USING SAME

Resumen de: EP4794029A1

0001 A nonaqueous electrolyte secondary battery includes a first electrode, a second electrode, a nonaqueous electrolyte, and a separator provided between the first electrode and the second electrode. The first electrode includes a first current collector and a first active material layer supported on the first current collector. The first active material layer contains a first active material, a binder, and an additive. The additive is a polymer material having a melting point or thermal decomposition temperature of 200°C or higher and 500°C or lower. In a cross section of the first active material layer, the polymer material forms a plurality of island-shaped regions and is dispersed therein. The aspect ratio: DL/DW is 1.5 or less, where DL represents a length of a major axis of particles of the polymer material, the major axis defining a maximum particle diameter thereof, and DW represents a length of a minor axis perpendicular to the major axis at a midpoint thereof.

METHOD OF MAKING A PRECURSOR FOR A CATHODE ACTIVE MATERIAL

Resumen de: WO2025078192A1

The present invention is directed towards a process for making a particulate (oxy)hydroxide or oxide of TM wherein TM comprises nickel and one transition metal selected from Co and Mn and, optionally, at least one further metal selected from Ti, Zr, Mo, W, Al, Mg, Nb, and Ta, and wherein said process comprises the steps of: (a) Providing an aqueous solution (a) containing water-soluble salts of Ni and lithium and of at least one transition metal selected from Co and Mn, and, optionally, at least one further metal selected from Ti, Zr, Mo, W, Al, Mg, Nb, and Ta, and an aqueous solution (P) containing sodium or potassium hydroxide and, optionally, an aqueous solution (y) containing ammonia, wherein the amount of lithium is in the range of from 0.01 to 2.5 mol-% with respect to TM, (a) combining a solution (a) and a solution (|3) and, if applicable, a solution (y) at a pH value in the range of from 10.0 to 12.7 in one or more sub-steps, thereby creating solid particles of a hydroxide containing nickel, said solid particles being slurried, (b) removing the particulate (oxy)hydroxide of TM by a solid/liquid separation method, followed by drying.

LIQUID COOLING ASSEMBLY AND BATTERY PACK

Resumen de: EP4794057A1

A liquid cooling assembly and a battery pack are provided. The liquid cooling assembly includes a plurality of liquid cooling plates arranged at intervals and a main pipe. An installation space for mounting at least one heat-generating element is formed between two adjacent liquid cooling plates. Each of the liquid cooling plates includes a flow passage portion and a plurality of nozzles in communication with the flow passage portion. The main pipe includes a plurality of connectors, and the connectors are in one-to-one expansion connection to the nozzles and are inserted into the nozzles. An inner wall of each of the connectors is provided with a support ring that overlaps each of the nozzles (11).

INSPECTION APPARATUS AND INSPECTION METHOD

Resumen de: EP4794054A1

Disclosed herein relates to an inspection device including: an inspection jig including a first jig having a plurality of first pressure sensing elements and a second jig having a plurality of second pressure sensing elements, wherein the inspection jig is configured to generate thickness data regarding the thickness of a battery cell provided between the first jig and the second jig while the battery cell is in contact with the first jig and the second jig; and a processor configured to detect the bending dimensions and bending shape of the battery cell based on first pressure data generated from the plurality of first pressure sensing elements, second pressure data generated from the plurality of second pressure sensing elements, and the thickness data.

ELECTRODE SHEET, SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4793997A1

0001 An electrode sheet (100, 100A, 100B), a secondary battery (500), and an electronic device (1000) are provided. The electrode sheet (100, 100A, 100B) includes: an electrode sheet body (160); and an electrode tab (150, 150') extending from the electrode sheet body (160) in a first direction (D1), where a stiffener (190) is disposed on a surface of the electrode tab (150, 150'), where the stiffener (190) at least includes a first portion (192) and a second portion (194), the first portion (192) and the second portion (194) are connected through a bending part (196). An angle formed by the first portion (192) and the second portion (194) is a, 28°≤a≤45°.

ELECTRODE SHEET, SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4794106A1

0001 The disclosure provides an electrode sheet (300), including: an electrode sheet body (310), and a tab (320) protruding from the electrode sheet body (310) along a first direction (F), the tab (320) is set with a reinforcing rib array (321), the reinforcing rib array (321) includes multiple first reinforcing ribs (322); wherein in the first direction (F), every two adjoining first reinforcing ribs (322) are separated from each other. The purpose of the disclosure lies in providing an electrode sheet (300), a secondary battery (100A/B) and an electronic device (1000), so as to at least strengthen the supporting force for the tab (320).

FE-NI ALLOY CURRENT COLLECTOR HAVING LOW RESISTANCE MULTILAYER STRUCTURE AND SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4794033A1

0001 The present invention relates to a current collector that has a Fe-Ni alloy formed on at least one surface of a core part composed of copper foil and which exhibits low resistance and high strength while improving corrosion resistance when used as a current collector of a secondary battery to which lithium ions and a lithium metal negative electrode or a sulfide-based solid electrolyte are applied.

BATTERY BOX, MANUFACTURING METHOD FOR BATTERY BOX, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794081A1

A battery box (100), a manufacturing method for the battery box (100), a battery (1100) and an electric device, the battery box (100) comprising a first box body (110). The first box body (110) comprises a plate component (111), one side of the plate component (111) being provided with an accommodating space (1101) for accommodating a battery cell (200). The plate component (111) comprises a plate body portion (1111) and a first bent portion (1112), wherein the first bent portion (1112) is bent towards the accommodating space (1101) from the edge of the plate body portion (1111). The fillet radius at the bend of the edge of the plate component (111) is small, so that the width dimension of the first box body (110) can be reduced, thereby reducing the width dimension of the battery box (100); thus, the space occupied by the battery (1100) in the electric device can be reduced, facilitating improvement to the structural compactness and usage performance of the electric device.

IMPREGNATED FABRIC FOR USE IN BATTERY CELLS

Resumen de: WO2025076807A1

A cured fabric that is useful in batteries can be made by impregnating a PET fabric with a binder emulsion that contains a self-crosslinking acrylic polymer binder and an anionic surfactant, which contains (1) a lipophilic moiety and (2) an anionic hydrophilic moiety that is linked to the lipophilic moiety by an oxygenated organic moiety. The combination of the binder and anionic surfactant provides fast wetting of the fabric. The impregnated fabric is cured by heating to crosslink the acrylic polymer. The resulting cured fabric has high tensile strength and good wetting ability with acid solutions used in batteries.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND ELECTRODE USING SAME

Resumen de: EP4794028A1

A nonaqueous electrolyte secondary battery includes a first electrode, a second electrode, a nonaqueous electrolyte, and a separator provided between the first electrode and the second electrode. The first electrode includes a first current collector and a first active material layer supported on the first current collector. The first active material layer contains a first active material, a binder, and an additive. The additive is a polymer material having a melting point or thermal decomposition temperature of 200°C or higher and 500°C or lower. In a cross section of the first active material layer, the polymer material forms a plurality of island-shaped regions and is dispersed therein. When the first active material layer is increased in temperature from 25°C to 400°C or higher, the area of the island-shaped regions increases to four times or more in the cross section of the first active material layer.

THERMALLY CONDUCTIVE INTERFACE DESIGN

Resumen de: US2025121536A1

0000 A thermally conductive interface device produced from a thermally conductive interface material is disclosed. The device may be employed in a battery system of an electric or hybrid vehicle. The thermally conductive interface material comprises a composition of at least one silicone base, at least one inorganic filler, at least one silicone oil, a least one peroxide cross-linking agent, and/or at least one of a flame retardant and a colorant. The inorganic fillers and/or the silicone oils may be functionalized or non-functionalized. The silicone base may be a high consistency rubber (HCR) silicone.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND ELECTRODE USED THEREFOR

Resumen de: EP4794030A1

A nonaqueous electrolyte secondary battery includes a first electrode, a second electrode, a nonaqueous electrolyte, and a separator provided between the first electrode and the second electrode. The first electrode includes a first current collector and a first active material layer supported on the first current collector. The first active material layer contains a first active material, a binder, and an additive. The additive is a polymer material having a melting point or thermal decomposition temperature of 200°C or higher and 500°C or lower. The polymer material has a linear structure.

BATTERY PACK

Resumen de: EP4794089A1

0001 A battery pack (100) includes an elastic body (20) on a portion of each of the inner surfaces (12a) of a pair of lid parts (12). The pair of lid parts (12) are secured to the respective end surfaces of a battery block (2) housed in the housing space of a casing body (11). A gap (GP) is formed between each of the pair of lid parts (12) and an edge (11a) of a corresponding open end of the casing body (11). The lid part (12) includes: a lid body (13) that is a flat board; and a wall part (14) projecting from the inner surface of the lid body (13). The elastic body (20) is disposed to abut a surface of the wall part (14) that faces the inner surface of the casing body (44). The elastic body (20) includes an inclined surface (21) flaring out toward the inner surface of the lid part (12). A portion of the inclined surface (21) enters the gap (GP). A corner portion (19) of the casing body (11) that is located between an edge (11a) of the open end of the casing body (11) and the inner surface (11b) of the casing body (44) abuts the inclined surface (21).

BATTERY NEGATIVE ELECTRODE SHEET AND BATTERY

Nº publicación: EP4794005A1 19/08/2026

Solicitante:

EVE ENERGY CO LTD [CN]
Eve Energy Co., Ltd.

Resumen de: EP4794005A1

The present application provides a battery and a negative electrode sheet thereof. The battery negative electrode sheet includes a current collector and an active layer. The active layer is coated on the surface on at least one side of the current collector. The active layer has a plurality of grooves arranged in sequence along the length direction of the current collector. The grooves each extend along the width direction of the current collector. A plurality of regions in the active layer are separated by the plurality of grooves along the length direction of the current collector. Each region has a plurality of pores.