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Updated on
20/08/2026 [07:36:00]
Results 100 to 125 of 728
Absstract of: 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.
Absstract of: 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.
Absstract of: WO2025078957A1
An apparatus (10) for forming incisions in electrode precursors comprises a laser head (11) configured to emit a laser beam (LB) having a predetermined wavelength along an optical path (OP), an incision formation zone (NZ) placed along the optical path (OP) of the laser beam (LB), a support device (12) for an electrode precursor (100) comprising a support structure (13) configured to receive and support the electrode precursor (100). The incision formation zone (NZ) is placed along a first portion (16) of the support structure (13) and in the incision formation zone (NZ) the first portion (16) of the support structure (13) is traversed by the optical path (OP) of the laser beam (LB). At least the first portion (16) of the support structure (13) is made of a material that is transparent to a laser beam having said predetermined wavelength.
Absstract of: 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).
Absstract of: 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°.
Absstract of: 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.
Absstract of: 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).
Absstract of: EP4793196A1
Disclosed in the present application are a container, an energy storage apparatus, an energy storage system and a charging network. The energy storage apparatus comprises containers. There are m containers, where m>2, and the m containers are arranged in the direction of height of the containers. The size of each container in the direction of length thereof is consistent with the size of a standard container in the direction of length thereof, the size of each container in the direction of width thereof is consistent with the size of a standard container in the direction of width thereof, the size of each container in the direction of height thereof is smaller than the size of a standard container in the direction of height thereof, and the sum of the sizes of ml adjacent containers among the m containers in the direction of height thereof is equal to the sum of the sizes of n standard containers in the direction of height thereof. The size of ml containers in the direction of height thereof is equal to the size of n standard containers in the direction of height thereof, such that the space occupied by ml stacked containers is the same as the space occupied by n standard containers, thereby improving the space utilization rate of container placement, and reducing the container transportation cost, thus reducing the use cost of energy storage apparatuses.
Absstract of: WO2025078960A1
An apparatus (10) for forming incisions in electrode precursors comprise a support drum (12) rotatable around a rotation axis (R1 ) and comprising a support surface (13) configured to receive and to support the electrode precursor (100), a laser head (11 ) placed at the rotation axis (R1 ) of the support drum (12) and configured to emit a laser beam (LB) along an optical path (OP), an incision formation zone (NZ) placed along the optical path (OP) of the laser beam (LB). The incision formation zone (NZ) is placed cantilevered with respect to said support surface (13). An adhesion device (16) is configured to generate forces (F) which have components having directions transverse to the support surface (13) and towards the support surface (13), the adhesion device (16) being configured to generate said forces (F) on the electrode precursor (100).
Absstract of: EP4794006A1
0001 An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on the anode current collector and including an anode active material, a binder and a nitrate. A concentration gradient of the binder in a thickness direction from a top surface of the anode current collector to a top surface of the anode active material layer is 0.1 wt%/µm or less. The concentration gradient of the binder is calculated from contents of a dye adsorbed to the binder measured at multiple points along a line in the thickness direction on a cross-section of the anode active material layer through an SEM-EDS and a thickness of the anode active material layer.
Absstract of: EP4794075A1
A battery pack includes: a housing; multiple cells disposed in the housing; and a coupling portion configured to be coupled to an electrical device to transmit electrical energy. The coupling portion includes: a terminal assembly configured to be electrically coupled to the electrical device; and a support portion supporting at least the connection between the electrical device and the battery pack, where the support portion includes a support cavity and a reinforcing member accommodated in the support cavity, and the reinforcing member is an independent prefabricated member and is made of the same material as the housing.
Absstract of: EP4794104A1
An electrode sheet (100) includes a current collector (10) including a current collector body (12) and a tab (14) extending from the current collector body (12) along a first direction (d); an active material layer (20) disposed on at least one side of the current collector (10) in a thickness direction; and a reinforcement rib (30). The tab (14) has a tab bare foil region (40) where the active material layer (20) is not disposed. In the first direction (d), the reinforcement rib (30) continuously extends from the tab bare foil region (40) to a surface of the active material layer (20). The disclosure provides an electrode sheet (100) and a secondary battery (1300) to at least achieve avoiding tab folding.
Absstract of: EP4792944A1
0001 According to one embodiment of the present disclosure, provided is a device for cleaning an electrode rolling roll, comprising: a cleaning member provided so as to allow a surface of the electrode rolling roll to come into contact with a cleaning cloth, a spray nozzle that sprays a cleaning liquid onto the cleaning cloth, a control unit that adjusts the sprayed amount of the cleaning liquid, and a monitoring unit that monitors the sprayed amount of the cleaning liquid, wherein the cleaning liquid is a distilled water, and wherein the control unit adjusts the amount of the cleaning liquid sprayed once by the spray nozzle so as to be within a range of 0.05 ml to 0.2 ml.
Absstract of: EP4794060A1
Embodiments of this application relate to the field of energy storage technologies, and a battery pack and an energy storage device are provided. A heating film is disposed in the battery pack, to increase a temperature of an operating environment of a cell in the battery pack. Wiring density of heating wires at different positions in the heating film is controlled, to control heating efficiency at the different positions in the heating film, and selectively heat cells at the different positions to different extents, so that different cells of the battery pack can be heated to a preset temperature range. In this way, temperatures of the different cells of the battery pack may be neither excessively low to result in low charging/discharging efficiency, and nor excessively high to affect a service life or safety performance of the cells. Therefore, a service life and safety performance of the battery pack are effectively improved while charging/discharging efficiency of the battery pack is ensured, thereby improving a service life and safety of the energy storage device.
Absstract of: EP4792971A1
0001 The present invention relates to a lead-tab laser welding method for joining a lead portion and a tab portion, and the lead-tab laser welding method may comprise a seating step of disposing the lead portion and the tab portion of a secondary battery so as to overlap each other, and a laser welding step in which a welding unit forms a plurality of beads in an overlap region of the lead portion and the tab portion, wherein in the laser welding step, with respect to first, second, and third positions sequentially located along a first direction in the overlap region of the lead portion and the tab portion, the beads are formed in the order of the first position, the third position, and the second position.
Absstract of: WO2025078036A1
The invention relates to a calender (100) for calendering sheet materials (10), preferably in order to produce electrodes, having a first roller (1) and a second roller (2). The rollers (1, 2) can be moved relative to each other in an axial direction (A), and the calender (100) has first actuation means (7) for bending the first roller (1) by the introduction of torque in a radial direction (R). The invention additionally relates to a method for operating a calender (100).
Absstract of: EP4794013A1
0001 The present disclosure provides a negative electrode, a secondary battery, and an electric device, and belongs to the technical field of batteries. By controlling volume median particle sizes Dv50 of a first negative electrode active material and a second negative electrode active material in a negative electrode active material, a grading ratio (X) of the negative electrode active material, a tensile strength of the negative electrode, and a content of a first binder in the negative electrode active material layer to satisfy the following relationship: 0.69 ≤ (A + B) × X/(N × C) ≤ 160, the present disclosure can effectively enhance the adhesion and electrical conductivity of the negative electrode and effectively suppress the expansion and contraction of the negative electrode active material, thereby improving the stability of the negative electrode active material. This design enables the negative electrode active material to be uniformly distributed on the negative electrode, shortens the migration and diffusion path of lithium ions in the negative electrode active material, and reduces the resistance of the secondary battery while improving the cycling performance of the secondary battery.
Absstract of: 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.
Absstract of: EP4794040A1
Provided are a power storage device (10) which can suppress the growth of dendrites while suppressing increases in the mass and volume of the power storage device, and a method for manufacturing the power storage device. The power storage device includes a positive electrode (11), a negative electrode (15), and a separator (14) for isolating the positive electrode and the negative electrode. The negative electrode includes an active material layer (17), an electrolyte layer (18), and a conduction layer (19), which are arranged in this order toward the positive electrode. The active material layer includes an active material which reduces carrier ions. The electrolyte layer includes an electrolytic solution and a solid electrolyte having conductivity for carrier ions, and is in contact with the active material layer. The conduction layer has electron conductivity, is in contact with the electrolyte layer, and takes in an element deposited at an interface between the active material layer and the electrolyte layer.
Absstract of: EP4793995A1
0001 The present disclosure relates to a secondary battery and an electrical device. The secondary battery satisfies a relationship as follows: 0.3 ≤ A/100×(N+100P) ≤ 25; where A, in ppm, represents a mass content of the Al element in the positive electrode active material; P, in %, represents a weight percentage of the pyridine-based additive in the electrolyte; and N, in %, represents a weight percentage of the nitrile-based additive in the electrolyte. By correlating and defining the relationship between the key additives in the electrolyte and the Al content in the positive electrode active material, the present disclosure can effectively enhance the complexation between the nitrile-based and pyridine-based additives in the electrolyte and the positive electrode active material, thereby improving the film-forming stability of the battery during charging, and thus significantly enhancing the high-temperature stability of the battery.
Absstract of: WO2025081003A1
Presented herein are, infer alia, electrolytes for electrochemical cells, such as lithium sulfur secondary batteries. The electrolytes comprise one or more lithium salts. One or more of the lithium salts is lithium iodide. Lithium iodide is a primary electrolytic salt. Secondary batteries that include the disclosed electrolytes are also disclosed.
Absstract of: WO2025081083A1
Systems and methods for low temperature charging a battery, which may be performed alone or in combination with heating a battery. In some aspects, the low temperature charging method involves obtaining a susceptance response of a battery, and upon a change in the susceptance response of the battery, altering a charge signal to the battery. It is understood that changes in susceptance are correlated with phase changes of a battery electrolyte – e.g., as a battery warms from a low temperature where the electrolyte is partially or completely frozen (solid) to a higher temperature where it changes to a liquid state, there is a change in susceptance. As the electrolyte changes from solid to liquid as understood from a change in the susceptance response, the charge may be increased as the electrolyte thaws.
Absstract of: EP4794074A1
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 an attaching member disposed on a surface of the mica plate to fix the mica plate, an area S1 of the attaching member being not less than 5.8 × 10-6 times an area S2 of the mica plate in a plan view of the mica plate.
Absstract of: AU2024360191A1
A method can include receiving battery sensor measurements, determining a state of the battery (e.g., SoH, SoC, SoE, SoP, etc. or information correlated therewith such as internal resistance, open circuit voltage, etc.), estimating an aging profile or degradation of the battery for one or more operating conditions, and determining operating conditions for the battery based on the estimated degradation.
Nº publicación: EP4794007A1 19/08/2026
Applicant:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
Absstract of: EP4794007A1
0001 An electrode sheet, an electrode assembly, a battery cell and a preparation method therefor, a battery, and an electric device, relating to the technical field of batteries. A protective layer is provided on at least the surface of an end portion of the electrode sheet, and the protective layer comprises silicon oxide; and on the basis of the total mass of all elements of a first position of the electrode sheet, the mass content A of an Si element satisfies: A is less than 0.01 wt%, and the first position is a position 5 mm distant from the surface of the end portion.
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