Resumen de: EP4794009A1
0001 A main object of the present disclosure is to provide a cathode layer for a lithium ion battery, with which the resistance increase of a battery due to charge and discharge can be suppressed. The present disclosure achieves the object by providing a cathode layer to be used in a lithium ion battery, the cathode layer including: single crystalline active material configured by a crystalline primary particle containing Li, TM, which is a transition metal, and O as a cathode active material, wherein in a cross-section observation image of the cathode layer by a scanning electron microscope, the single crystalline active material includes a long side and a short side, an angle formed by the long side and the short side is 60° or more and 120° or less, and an aspect ratio which is a ratio of length of the long side to the short side is 1.2 or more, the long side of the single crystalline active material extends along (003) surface, and a ratio N/N of a number N of the single crystalline active material of which inclination of the long side direction to in-plane direction of the cathode layer is 0° or more and 30° or less, with respect to a number N of the single crystalline active material is 50% or more.
Resumen de: EP4792963A1
0001 An apparatus for cutting a secondary battery can includes a support fixedly supporting a molded battery can product having a removal target portion, a cutter having an incision blade inserted into the molded battery can product, the cutter being configured to incise a portion of the removal target portion, and a cutting blade configured to continuously cut from the portion of the removal target portion incised by the incision blade, and a cutter driver that moves the cutter and causes the incision blade to move along a linear path perpendicular to an inner wall of the molded battery can product, resulting in a cutting start incision portion on the inner wall, the cutter driver causing the cutting blade to cut from the cutting start incision portion.
Resumen de: EP4794107A1
An electrode assembly may include a first electrode having a first electrode tab, a second electrode disposed on the first electrode and having a second electrode tab, a first pass electrode disposed on the second electrode and having a first pass electrode tab electrically connected to the first electrode tab, and a separator disposed between the first electrode and the second electrode or between the second electrode and the first pass electrode.
Resumen de: EP4794010A1
A cathode active material including: an active material 1 comprising secondary particles; and an active material 2 comprising single particles, wherein the active material 1 and the active material 2 have a bimodal particle diameter distribution, respectively, the active material 1 has an average particle diameter (D50) of 9 µm to 17 µm, and the active material 2 has an average particle diameter (D50) of 2.5 µm to 4 µm, is disclosed.In some implementations, a cathode active material having high packing density may be provided.
Resumen de: EP4794055A1
A secondary battery (100), including an electrode assembly (120), a case (110) that accommodates the electrode assembly (120), the case (110) including an opening at at least one side, and a cap plate (130) that seals the opening, wherein the case (110) includes an inner wall (111), an outer wall (112) spaced apart from and surrounding the inner wall (111), a space portion between the inner wall (111) and the outer wall (112), and a connection wall (113) connecting the inner wall (111) and the outer wall (112), the connection wall (113) sealing an upper end of the space portion.
Resumen de: EP4794065A1
A manufacturing method for a rechargeable battery (1), the manufacturing method including manufacturing a case (10) having an opening on a first side, inserting an electrode assembly (30) into the case (10) through the opening, and coupling a cap assembly (50) to the first side, wherein manufacturing the case (10) includes manufacturing a first intermediate material (10') having an internal accommodation space (11) and an open first side, manufacturing a second intermediate material (10") by forming a plurality of holes (1130) on a second side opposite to the first side of the first intermediate material (10'), and coupling a first electrode terminal (150) to the second side of the second intermediate material (10").
Resumen de: EP4794016A1
0001 An anode configured to decrease the rate of area increase in planar direction which is due to battery charge and discharge, the anode comprises an anode collector and an anode layer on at least one surface of the anode collector; the anode layer comprises a carbon composite material comprising Si and a carbon material having an aspect ratio of more than 1; the carbon composite material is carbon composite material particles; and, of the carbon composite material particles contained in the anode layer, a percentage of first carbon composite material particles that an angle θ formed by the surface of the anode collector and a line of the carbon composite material particles in long axis direction is 50° or more and 90° or less, is more than 35%.
Resumen de: EP4794095A1
0001 A battery case for a secondary battery having a gas discharge valve provided on one flat surface, wherein the gas discharge valve comprises a first thin portion having a thickness smaller than that of the flat surface and a second thin portion formed on a surface of the first thin portion, and having a thickness even smaller than that of the first thin portion, and a residual stress at the first thin portion is greater than that at the second thin portion.
Resumen de: EP4794059A1
Disclosed are a heating sheet of a battery cell for a thermal propagation evaluation and a thermal propagation evaluation apparatus including the same. A thermal propagation evaluation apparatus (100) according to embodiments includes a power source (130), a housing (110) including a cell occupancy space, in which a plurality of battery cells (C1-C5) including a target battery cell are disposed in parallel, and a heating sheet connected to the power source and configured to heat the target battery cell (120) in the housing, wherein the heating sheet includes a cover in a sheet shape having an area corresponding to one surface of the battery cell and a predetermined thickness and a heating member including a heating coil pattern disposed in one region inside the cover and electrically connected to the external power source, and an area of a region in which the heating coil pattern is disposed may range from 5 to 20% of an area of the cover.
Resumen de: EP4794012A1
A cathode active material for a lithium secondary battery, a method of fabricating the same, and a lithium secondary battery including the same are provided. The cathode active material for a lithium secondary battery includes a lithium-transition metal oxide particle, and a coating layer formed on a surface of the lithium-transition metal oxide particle and including Li3PO4 and an oxide represented by LiwTix(PO4)3-(Al2O3)y (0≤w, x≥4/3, y>0, 0
Resumen de: EP4794056A1
0001 A rechargeable battery (200) includes an electrode assembly (150), and a cap plate (120) defining a terminal hole, a pair of terminals (130, 140) connected with the electrode assembly (150), one of the terminals (130, 140) including a rivet terminal (50) in the terminal hole with a seal gasket (40) between the rivet terminal (50) and the cap plate (120), a terminal plate (60) coupled to the rivet terminal (50), surrounding a part of the rivet terminal (50) at an exterior of the cap plate (120), and having an air layer (80) therein, and an insulator (70) between the cap plate (120) and the terminal plate (60), and overlapping the air layer (80) in a thickness direction of the cap plate (120).
Resumen de: EP4794008A1
0001 A solid-state battery includes a cathode layer, a solid electrolyte layer, and an anode layer. At least one of the cathode layer and the anode layer includes at least one of a first sulfide solid electrolyte containing a Li element, a P element, a S element, and carbonate ions and a composite sulfide solid electrolyte of a second sulfide solid electrolyte containing a Li element, a P element, and a S element and a carbonate.
Resumen de: EP4794053A1
0001 An immersion-type energy storage device includes, a housing having an accommodation space therein, one or more battery cells accommodated in the accommodation space of the housing, insulating oil that fills the accommodation space to immerse the battery cells and cool the battery cells, a temperature sensor array including a plurality of temperature sensors installed at different locations that are vertically spaced apart in the accommodation space to detect temperature, and a battery management apparatus configured to determine whether a defect has occurred in the insulating oil based on whether a pattern of a temperature signal detected by the plurality of temperature sensors has changed over time.
Resumen de: EP4794042A2
0001 The present application discloses a secondary battery (100) and an electronic device. A first current collector (211) is provided with a first foil-free zone (211a). A first tab (30) includes a first portion (31) and a second portion (32) that are connected to each other. The first portion (31) is disposed on the first foil-free zone (211a). The second portion (32) extends out of a first electrode sheet (21). A first adhesive layer (50) is bonded between the first foil-free zone (211a) and the first portion (31). The first tab (30) includes a first surface (30a) and a second surface (30b) that are oppositely arranged. The first surface (30a) of the first portion (31) is provided with a plurality of first protrusions (30c). The first adhesive layer (50) is partially embedded between two adjacent first protrusions (30c). The second surface (30b) of the first portion (31) is provided with a plurality of second protrusions (30d). Along a first direction (Z), projections of at least one of the second protrusions (30d) at least partially overlap with projections of the first protrusions (30c), and/or projections of at least one of the second protrusions (30d) are located between projections of two adjacent first protrusions (30c). The connection process between the first tab (30) and the first current collector (211) can be simplified, energy density can be increased, and the connection strength between the first tab (30) and the first current collector (211) can be improve
Resumen de: EP4794063A1
0001 The present disclosure refers to a battery pack, including a battery pack housing; a battery cell stack including a plurality of rechargeable battery cells, wherein the battery cell stack is accommodated within the battery pack housing; a liquid release system positioned above the rechargeable battery cells, wherein the liquid release system is configured to release a liquid toward the rechargeable battery cells when a release condition is detected; and a retention structure being configured for retaining the liquid released by the liquid release system, wherein the retention structure is in direct contact with an outer surface of the rechargeable battery cells.
Resumen de: EP4794098A1
0001 Battery pack (1) comprising a housing (2) defining a space (S) for housing at least a battery module (3), the battery module (3) comprising a support system (4) defining a space (S') for housing a plurality of battery cells (10) and a venting system (4) defining a venting channel (V) fluidly connected to the space (S'), the housing (2) comprising venting means (23) configured to allow selectively communication between said space (S) and the environment, the battery pack (1) comprising a labyrinthic system (30) fluidly connecting the venting channel (V) to venting means (23), the labyrinthic system (30) providing an obliged path for a flow (F) for gas/flames igniting from any among the battery cells (10) towards the venting means (23) of a predetermined length.
Resumen de: EP4794022A1
0001 A positive electrode active material includes a secondary particle (2), wherein: the secondary particle (2) includes a first particle group and a second particle group; each of the first particle group and the second particle group is composed of primary particles (1); the second particle group has a larger average particle diameter than the first particle group; the first particle group and the second particle group are dispersed in each other in the secondary particle (2); the primary particles (1) belonging to the first particle group contain a first olivine-type compound; the primary particles (1) belonging to the second particle group contain a second olivine-type compound; and the second olivine-type compound has a lower Mn compositional ratio than the first olivine-type compound.
Resumen de: EP4794015A1
An anode configured to decrease the rate of expansion in thickness direction which is due to battery charge and discharge, the anode comprises an anode collector and an anode layer on at least one surface of the anode collector; the anode layer comprises a carbon composite material comprising Si and a carbon material having an aspect ratio of more than 1; the carbon composite material is carbon composite material particles; and wherein, of the carbon composite material particles contained in the anode layer, a percentage of first carbon composite material particles that an angle θ formed by the surface of the anode collector and a line of the carbon composite material particles in long axis direction is 0° or more and less than 45°, is more than 52%.
Resumen de: EP4794014A1
0001 An anode configured to decrease the rate of expansion in thickness direction which is due to battery charge and discharge, the anode comprises an anode collector and an anode layer on at least one surface of the anode collector; the anode layer comprises a carbon composite material comprising Si and a first carbon material having an aspect ratio of more than 1, and a second carbon material having an aspect ratio of more than 1; the carbon composite material is carbon composite material particles; the second carbon material is second carbon material particles; and, of the carbon composite material particles contained in the anode layer, a percentage of those that an angle θ formed by the surface of the anode collector and a line of the carbon composite material particles in long axis direction is 50° or more and 90° or less, is 62% or more.
Resumen de: WO2025078086A1
The invention relates to a device for contacting battery modules, comprising two connection parts (2, 3) which can be moved along an insertion direction (1) relative to one another between a disconnection position and a connection position, wherein a first connection part (2) comprises a contact body (4) having an electrical contact face (5) and a second connection part (3) comprises a contact terminal which, in the connection position, is seated against the contact face (5). In order to allow reliable electrical connection regardless of the mechanical load and, at the same time, to require little space, according to the invention the contact terminal is a contact spring (6) which, in the connection position, is resiliently seated against the contact face (5) perpendicularly to the insertion direction (1) and a connection part (3) has a stop face (7) for a positioning body (8) of the other connection part (2), said stop face acting perpendicularly to the insertion direction (1), and the contact face (5) having a greater area than the stop face (7).
Resumen de: EP4794043A1
This application discloses an electrochemical apparatus and an electric device, and the electrochemical apparatus includes a housing, an electrode assembly, a first adhesive member, and a second adhesive member. A first sidewall of the housing includes an internal first surface and an external second surface opposite to each other along a first direction. The electrode assembly is disposed within the housing, and the electrode assembly includes a first side surface. The first adhesive member includes a first side portion and a second side portion opposite each other, where the first side portion includes a first adhesive region bonded to the first surface, and the second side portion includes a second adhesive region, a first non-adhesive region, and a third adhesive region sequentially arranged along a second direction, and the second adhesive region and the third adhesive region are bonded to the first side surface. Along the first direction, a projection of the first non-adhesive region overlaps with a projection of the first adhesive region. The second surface is bonded to an external structure through the second adhesive member. This application is conducive to suppressing impact on corners of the housing, and facilitates reducing the risk of damage to electrode plates of the electrode assembly.
Resumen de: WO2025096234A1
A battery power station including a top panel, a base, and side panels which define a structure, and a first removable end panel and a second removable end panel. The battery power station includes an electronics compartment within the structure including at least one printed circuit board, and a battery compartment within the structure configured to receive a battery pack module. The base includes lateral protrusions having a hook structure configured to interdigitate with corresponding hook structure of the side panels forming a seal between the base and the side panels. The first and second removable end panels include a shell having protrusions extending from an inner surface of the shell and around a periphery of the shell, the protrusions configured to create a seal with the structure forming a seal between the structure and the first and second removable end panels.
Resumen de: EP4794094A1
0001 This application provides a battery cell, which relates to the technical field of battery cells. The battery cell includes an electrode assembly and a housing, wherein the electrode assembly is arranged in the housing, and an explosion-proof structure is provided on the housing; a valve opening area S of the explosion-proof structure, a valve opening pressure P of the explosion-proof structure, an electrolyte injection amount m of the battery cell, and a capacity C of the battery cell satisfy 2.4 ≤ S×P-C/(m×1000) ≤ 5.4. This application appropriately sets the valve opening area of the explosion-proof structure, valve opening pressure of the of the explosion-proof structure, electrolyte injection amount of the battery cell, and the capacity of the battery cell, so that when the battery cell fails and causes thermal runaway, the explosion-proof structure can work in time, and different parameters, for example the capacity of the battery cell, can be set according to actual conditions, so as to meet the explosion-proof requirements of large-capacity batteries.
Nº publicación: EP4793199A1 19/08/2026
Solicitante:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
Resumen de: EP4793199A1
An energy storage device, an energy storage system and a charging network. The energy storage device (100) comprises at least one energy compartment (10) and at least one control compartment (20), wherein the energy compartment (10) comprises a first compartment body (13) and an energy unit (12), the energy unit (12) being accommodated in the first compartment body (13); the dimension of the energy compartment (10) in a height direction thereof is less than the dimension of a standard container in a height direction thereof; the control compartment (20) is disposed outside the energy compartment (10); and the control compartment (20) comprises a second compartment body (21) and a control module (22), the control module (22) being accommodated in the second compartment body (21), and the control module (22) being used for performing electrical control on the energy unit (12) in the energy compartment (10).