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1478
results.
Updated on
25/12/2025 [07:16:00]
Results 700 to 725 of 1478
Absstract of: EP4664561A1
The present application provides a secondary battery and an electrical device. The secondary battery comprises: a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode film layer, the positive electrode film layer comprises a positive electrode active material containing transition metal elements, based on the total molar number of the transition metal elements in the positive electrode active material, the molar content of nickel element is not lower than 85%, and the energy per unit area of the positive electrode film layer on a single side of the positive electrode sheet is 15-35 mWh/cm<sup>2</sup>, optionally 20-35 mWh/cm<sup>2</sup>; and a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode film layer, the negative electrode film layer comprises a negative electrode active material containing a carbon-silicon composite material, and the carbon-silicon composite material comprises carbon matrix particles having a carbon skeleton and silicon nanoparticles attached to the carbon skeleton. According to the secondary battery, the energy density of the secondary battery is improved by means of the matching design of a positive electrode active material and a negative electrode active material.
Absstract of: EP4664611A1
A battery module includes battery cells each of which includes a pair of broad width surfaces and that are arranged such that the broad width surfaces are opposed to each other and a heat insulator arranged between an adjacent pair of battery cells. The heat insulator includes a heat insulating sheet and a buffer sheet bonded to the heat insulating sheet. The heat insulating sheet is formed of a material that can be more easily compressively deformed than the heat insulating sheet. The heat insulating sheet includes a recessed portion in a surface to which the buffer sheet is bonded.
Absstract of: EP4664577A2
A tab welding structure and a battery are provided, relating to the field of battery technology. The tab welding structure includes a wound body (100) with an electrode plate, and a full tab (110). The full tab (110) is electrically connected to the electrode plate and located at one end of the wound body (100). A current collector (300) is welded to the full tab (110) to form welding point groups (200). The welding point groups (200) are arranged in a radial pattern around a center of the wound body (100). Each welding point group (200) includes welding points (211) arranged in a wave pattern along a radial direction of the wound body. This configuration enhances the uniformity of current conduction in the wound body (100) and reduces the amount of current loss.
Absstract of: EP4664669A1
The present application provides a battery cell (20), a battery (100), and an electrical device. The battery cell (20) includes a shell (21), an electrode assembly (22), a first insulating protective layer (23), and a second insulating protective layer (24). The first insulating protective layer (23) is disposed on an inner wall of the shell (21), and the second insulating protective layer (24) is configured to envelop at least a portion of the electrode assembly (22). The battery cell (20) provided in the embodiments of the present application uses the first insulating protective layer (23) and the second insulating protective layer (24) to separate the shell (21) from the electrode assembly (22), thereby increasing the creepage distance between the shell (21) and the electrode assembly (22). This can achieve the purpose of improving the breakdown voltage resistance between the shell (21) and the electrode assembly (22), thereby effectively enhancing the high-voltage breakdown resistance of the shell (21), and consequently reducing the probability of combustion or explosion of the battery cell (20).
Absstract of: EP4663583A1
The invention discloses a battery formation device and method. The battery formation device comprises a formation three-dimensional storage and further comprises a battery placing manipulator, a battery taking manipulator, a button cup taking manipulator, a capsule conveying circulating drawstring, a first capsule transfer conveying line and a first capsule conveying drawstring. The battery placing manipulator, the battery taking manipulator and the button cup taking manipulator are all arranged on a formation frame, the battery placing manipulator, the battery taking manipulator and the button cup taking manipulator are all capable of moving forth and back relative to the formation frame, the battery placing manipulator and the battery taking manipulator are arranged side by side left and right, the button cup taking manipulator is located behind the battery placing manipulator and the battery taking manipulator, the capsule conveying circulating drawstring penetrates through the formation frame and is located below the button cup taking manipulator, and the formation three-dimensional storage is arranged behind the formation frame. The formation efficiency is improved, and the labor cost and the labor intensity are reduced.
Absstract of: EP4664622A1
A cover plate (100), a battery (600) and an electronic device is provided. The cover plate (100) includes an integrally formed non-structurally fragile portion (102) and a non-structurally fragile portion (101). The structural strength of the non-structurally fragile portion (101) is lower than the structural strength of the non-structurally fragile portion (102). The non-structurally fragile portion (101) is configured to be destroyed when the battery (600) releases internal pressure. At least part of the outer side of the non-structurally fragile portion (101) is covered with a phosphorus-containing nickel plating layer (103).
Absstract of: EP4664660A1
The present disclosure relates to a secondary battery, and a secondary battery according to one aspect of the present disclosure may include an electrode; an electrode tab including an extension portion extending outward from the electrode and a tab coupling portion provided on one side of the extension portion in the extension direction; an electrode lead coupled to the tab coupling portion and capable of electrically connecting the electrode to the outside; and an auxiliary connecting member coupled to the electrode lead and the extension portion, respectively.
Absstract of: EP4664101A1
A detection apparatus for a tab (501) of a battery cell (500) and a production device for the battery cell (500) are provided, belonging to the field of battery technology. The detection apparatus includes an X-ray source (100), a flat panel detector (200), a carrying platform (300), and a controller (400). The flat panel detector (200) is opposite an emission port of the X-ray source (100), the carrying platform (300) is located between the X-ray source (100) and the flat panel detector (200), and the controller (400) is electrically connected and/or communicatively connected to the flat panel detector (200). The controller (400) is configured to acquire a detection image of the tab (501) of the battery cell (500). The detection image is a detection image of the tab (501) acquired by the flat panel detector (200) based on received rays, where the rays are emitted by the X-ray source (100), pass through the tab (501) of the battery cell (500) placed on the carrying platform (300), and are then projected onto the flat panel detector (200). The detection apparatus determines defect information of the tab (501) based on the detection image. The detection apparatus can achieve comprehensive detection of the tab (501).
Absstract of: EP4664537A1
Provided are a negative electrode plate, a secondary battery, and an electrical apparatus. The negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector, and the negative electrode film layer comprises a binder, wherein the negative electrode film layer comprises a first region and a second region, and the mass ratio of the binder in the first region to the binder in the second region is 0.1-1.4. The first region is a region that extends from a surface on a side of the negative electrode film layer away from the negative electrode current collector towards the interior of the negative electrode film layer by a distance within h/2, the second region is a region that extends from a surface on a side of the negative electrode film layer close to the negative electrode current collector towards the first region by a distance within h/2, and h represents a thickness of the negative electrode film layer.
Absstract of: EP4664558A1
The present invention relates to a cathode active material, and a cathode and a lithium secondary battery, comprising same and, particularly, to a cathode active material, and a cathode and a lithium secondary battery, comprising same, the cathode active material comprising a lithium transition metal oxide having a single crystallization degree (X) of 0.50 to 0.75 according to formula 1, wherein the lithium transition metal oxide is in the form of a single particle. In formula 1, a<sub>i</sub> represents a value (A<sub>i/</sub>A) of the cross-sectional area (A<sub>i</sub>) of the ith crystalline particle relative to the single particle cross-sectional area (A) when the single particle consists of i crystalline particles.
Absstract of: EP4664630A1
A power storage device (10) includes at least one power storage cell (100), a top wall (220) provided over the power storage cell, a facing wall (212, 240) facing the power storage cell in a width direction, a support portion (300) supporting the power storage cell, and a bottom plate (230) disposed under the power storage cell. The bottom plate (230) includes a connecting surface (231a) formed so as to be flat. At least one of the facing wall and the support portion includes a bottom surface (212a, 310a) formed in a position closest to the connecting surface (231a) of the bottom plate (230) and formed so as to be flat. The connecting surface (231a) of the bottom plate (230) is connected to the bottom surface.
Absstract of: EP4664629A1
A battery (10) has a housing (20), a cell pack (30) supported within the housing (20), and a lid (40) configured to close an open end (21) of the housing (20). A first terminal (71) is supported by the lid (40). A first busbar (61) is configured to electrically couple the cell pack (30) to the first terminal (71). A first electrical component (83, 84, 102) is supported by the lid (40) and electrically coupled between the first busbar (61) and the first terminal (71).
Absstract of: EP4664606A1
The present disclosure provides a battery pack and a device including the same. The battery pack according to an embodiment of the present disclosure comprises: a battery module including a battery cell stack in which a plurality of battery cells are stacked and a module frame in which the battery cell stack is housed; and a pack frame in which the battery module is housed, wherein a cooling flow path through which a coolant flows is formed at the bottom part of the pack frame, an opening is formed at the bottom part of the pack frame, so that the downside part of the module frame and the coolant come into direct contact with each other, and at least one protrusion is formed on the outer surface of the downside part of the module frame.
Absstract of: EP4664633A1
A module frame for a secondary battery according to various embodiments may be configured to accommodate a battery cell stack including multiple battery cells stacked along one direction, wherein the module frame is formed by a composite material-based plate including fiber reinforced plastic; and the plate includes at least multiple layers including a first layer and a second layer and has a layered cross-section symmetrical in the thickness direction of the plate. In addition, other embodiments are possible.
Absstract of: EP4664344A1
A battery drop simulation method including: generating, by at least one processor, a three-dimensional model including an adhesive member for a battery; receiving, by the at least one processor, information associated with the three-dimensional model; estimating, by the at least one processor, an adhesion coefficient of the adhesive member based on the information associated with the three-dimensional model; performing, by the at least one processor, a drop simulation of the three-dimensional model based on the information associated with the three-dimensional model, the adhesion coefficient, and drop condition information; and outputting, by the at least one processor, a drop simulation result of the drop simulation. The drop simulation result includes information about whether or not the adhesive member is separated due to a drop.
Absstract of: EP4664573A1
The present invention relates to a protective tape attachment device for electrode tab protection of a secondary battery and a battery cell manufacturing method using the same, and more specifically, relates to a protective tape attachment device capable of attaching both ends of a protective tape, and a battery cell manufacturing method using the same.According to one example of the present invention, it may provide a protective tape attachment device capable of bonding both ends of each of an upper protective tape and a lower protective tape to each other up and down, comprising an upper main attachment device and a lower main attachment device attaching the upper protective tape and the lower protective tape to an electrode tab respectively, and an upper end attachment device and a lower end attachment device moving independently of the upper main attachment device and the lower main attachment device on both sides of the upper main attachment device and the lower main attachment device respectively.
Absstract of: EP4664533A1
Example embodiments provide a secondary battery manufacturing system. The secondary battery manufacturing system includes a server configured to store a roll map including defect data indicating a defect of an electrode roll and datum point data indicating a datum point on the electrode roll, a controller configured to load the defect data and the datum point data from the server, and a datum point sensor configured to generate a datum point sensing signal by sensing the datum point on an electrode sheet unwound from the electrode roll, in which the controller is configured to generate datum point sensing data based on the datum point sensing signal and compare the datum point data with the datum point sensing data.
Absstract of: EP4664541A1
The present application provides a battery, comprising electrode sheets, wherein each electrode sheet comprises a current collector, a first active layer, and a second active layer; the first active layer is located on at least one surface of the current collector; the second active layer is located on the surface of the first active layer away from the current collector; the first active layer and the second active layer each comprise an active substance and a gel electrolyte; the first active layer further comprises a swelling electrolyte provided with pores; part of the gel electrolyte in the first active layer is filled in the pores of the swelling electrolyte.
Absstract of: EP4664556A1
Provided in the present application is a secondary battery, comprising a positive electrode plate. The positive electrode plate is provided with a positive electrode active material. The positive electrode active material comprises an agglomerated positive electrode material and a monocrystalline-like positive electrode material. The agglomerated positive electrode material has a volume average particle size Dv50 of 8 µm-15 µm. The agglomerated positive electrode material has a primary particle size of 0.1 µm-0.6 µm. The monocrystalline-like positive electrode material has a volume average particle size Dv50 of 2.5 µm-4 µm. The monocrystalline-like positive electrode material has a primary particle size of 0.8 µm-2 µm. The mass ratio of the agglomerated positive electrode material to the monocrystalline-like positive electrode material is greater than or equal to 1. The present application also relates to a corresponding electrical device. The described secondary battery has a high energy density and an excellent cycle life.
Absstract of: EP4664551A1
The present invention relates to a method for manufacturing an electrode for a lithium secondary battery, the method including the steps of: preparing a transfer laminate including a lithium metal layer, a release layer, and a base material layer; and transferring the lithium metal layer and the release layer to at least one surface of an electrode active material layer such that the lithium metal layer comes into contact with the electrode active material layer, in which at least one of the lithium metal layer and the release layer transferred to at least one surface of the electrode active material layer includes two or more holes, and the holes have a shortest distance between adjacent holes that satisfies a predetermined distance, enabling lithium byproducts to be reduced; an electrode manufactured by the method; and a lithium secondary battery including the electrode.
Absstract of: EP4664632A1
A battery pack includes a battery cell assembly including one or more battery cells, a case in which at least a portion of the battery cell assembly is accommodated, the case including a first groove and a second groove, a cover coupled to the case, and a sealing member between the case and the cover, a portion of the sealing member being located in the first groove and the second groove.
Absstract of: EP4664613A1
A secondary battery includes an electrode assembly including a plurality of unit cells stacked in a first direction, and having electrode leads at opposing ends in a second direction perpendicular to the first direction; a multifunctional terminal block (MTB) included at the opposing ends of the electrode assembly; and a laminate sheet that wraps around sides of the electrode assembly, wherein the MTB includes: an electrode terminal part electrically coupled with the electrode leads of the electrode assembly; and a rupture disk configured to rupture to discharge gas.
Absstract of: EP4664536A1
The present application relates to a positive electrode sheet and a preparation method therefor, a secondary battery, and an electric device. The negative electrode sheet includes a negative electrode current collector, an active material layer, and a passivation layer, where the active material layer is provided between the negative electrode current collector and the passivation layer; the active material layer includes a negative electrode active material, the passivation layer includes ion resin, and the ion resin includes one or more of carboxymethyl cellulose and a metal salt of carboxymethyl cellulose.
Absstract of: EP4664634A1
A battery (100) and a vehicle (1000) are provided. The battery (100) includes: at least one battery cell (17), a box (1), and a buffer structure (23). The battery cell (17) is arranged in the box (1). The buffer structure (23) is fixedly connected to the box (1), and the buffer structure (23) protrudes out of a side wall of the box (1).
Nº publicación: EP4664550A1 17/12/2025
Applicant:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
Absstract of: EP4664550A1
Embodiments of the present application provide a positive electrode plate and a manufacturing method therefor, a battery cell, a battery, and an electrical apparatus. The positive electrode plate includes: a positive electrode current collector; a first coating which is arranged on a surface of at least one side of the positive electrode current collector and includes a first active material; a second coating which includes a second active material that is different from the first active material; and a conductive layer which is arranged between the first coating and the second coating and is used for isolating the first coating from the second coating. The performance of a battery including the positive electrode plate is improved.
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