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Updated on
20/08/2026 [07:36:00]
Results 125 to 150 of 728
Absstract of: EP4794017A1
In order to provide a secondary battery quality control system and a secondary battery quality control method that allow performance of a completed secondary battery to be predicted on the basis of structure information of an electrode mixture sheet produced during manufacturing steps, the following configuration is provided. There are provided the quality control system for a secondary battery includes: a storage unit that stores a performance prediction model obtained by formulating correlation between structure information of an electrode mixture sheet and performance information of the secondary battery manufactured by applying the electrode mixture sheet; and a performance prediction unit that inputs the structure information of the newly manufactured electrode mixture sheet to the performance prediction model to predict electrode performance of the secondary battery manufactured by applying the electrode mixture sheet, and the secondary battery quality control method.
Absstract of: EP4793239A1
The present invention relates to a method for manufacturing a positive electrode active material for a lithium secondary battery, the method comprising: preparing a manganese-excess transition metal precursor having a molar ratio (Mn/M) of manganese (Mn) to transition metal (M) of 0.5 to 0.75; oxidizing the transition metal precursor by performing a first calcination; and forming a lithium and manganese-excess lithium transition metal oxide by lithiating the oxidized transition metal precursor through a second calcination.
Absstract of: CN122070610A
An electrode for an energy storage device is disclosed, the electrode comprising a solvent-free electrode film. The solventless film includes a porous network of active material joined together by binder particles. The binder particles comprise a high density polyethylene polymer.
Absstract of: WO2025078776A1
The invention relates to a battery (1) for storing electrical energy, comprising: at least one stack (7) of electrical cells (6); and a housing including a base (3) to which the stack (7) of cells of the battery (1) is attached. The battery (1) comprises: at least two compression plates (8) which are arranged on either side of the stack; means (10) for attaching the compression plates (8) to the base (3); at least one tie rod (12) which is capable of pressing the compression plates (8) against the cells (6) of the stack (7); and at least one elastic device (15) for compensating for gaps in the stack in a direction of dimensional variation of the stack, the device comprising at least one flat-wire wave spring.
Absstract of: EP4794032A1
0001 The present application relates to the technical field of secondary batteries. Provided are a lithium ferrite lithium supplement, a cathode material, a cathode plate, and a secondary battery. The lithium ferrite lithium supplement of the present disclosure includes a nuclear layer and a shell layer covering a surface of the nuclear layer. A material of the nuclear layer includes Li<5>FeO<4>, and a material of the shell layer includes a carbon material. I
Absstract of: EP4794027A1
The present application provides a cathode material, a manufacturing method thereof, a cathode plate, a secondary battery, and an electric device, which belongs to the technical field of battery cathode materials. The cathode material includes a carbon layer and a plurality of sodium vanadium fluorophosphate particles distributed in the carbon layer. The sodium vanadium fluorophosphate particles are coated by the carbon layer. The carbon layer has a porous network structure and a thickness of 3 nm to 6 nm. A porosity of the cathode material is 10% to 35%. The manufacturing method adopts a microwave-assisted hydrothermal treatment and a sol-gel technology to obtain a gel slurry, which is dried and then calcined to obtain the above cathode material. The cathode material of the present application improves the wettability in an electrolyte and the electron and sodium ion transport efficiency, which improves the charging and discharging efficiencies and the electrochemical performance of the secondary battery.
Absstract of: EP4794000A1
The present invention relates to a method for manufacturing a pre-lithiated negative electrode capable of suppressing formation of by-products during a pre-lithiation process, the method including the steps of preparing a negative electrode including a negative electrode active material layer having a moisture content of 800 ppm or more and provided on at least one surface of a negative electrode current collector layer; and bringing a transfer stack including a lithium metal layer and a base layer into contact with one surface of the negative electrode active material layer, with the lithium metal layer facing the one surface, and also relates to a lithium secondary battery including a pre-lithiated negative electrode manufactured therefrom.
Absstract of: EP4794097A1
0001 Provided is a battery module. The battery module includes a plurality of battery cells, a housing accommodating the plurality of battery cells, and a vent part arranged in a portion of the housing, wherein the vent part includes an outer hopper arranged through the housing, an inner surface of the outer hopper defines a vent hole penetrating the housing, and a diameter of the vent hole increases toward outside of the battery module.
Absstract of: EP4794039A1
A battery cell of the present invention includes a wound electrode stack, wherein the electrode stack includes a plurality of positive electrodes and a plurality of negative electrodes, and for at least two of the electrodes, the winding center of the electrode with a lower active material loading amount is located inward of the winding center of the electrode with a higher active material loading amount.
Absstract of: EP4794037A1
0001 The present invention relates to a cylindrical secondary battery manufacturing device and a cylindrical secondary battery manufacturing method, which relates to a cylindrical secondary battery manufacturing device and a cylindrical secondary battery manufacturing method, capable of effectively performing line balancing in a circulation manufacturing line. 0002 According to one example of the present invention, it is possible to provide a cylindrical secondary battery manufacturing device and a cylindrical secondary battery manufacturing method, which are characterized by comprising a plurality of sensors provided along a buffer line provided between preceding equipment and succeeding equipment, to calculate loading degrees of carriers step-by-step in the buffer line; and a controller adjusting process speeds of the preceding equipment and the succeeding equipment based on the step-by-step loading degrees calculated through combinations of outputs of the plurality of sensors, thereby balancing the process speeds of the preceding equipment and the succeeding equipment, and controlling to track the overall target process speed.
Absstract of: EP4794038A1
The present invention relates to a cylindrical secondary battery manufacturing device and a cylindrical secondary battery manufacturing method, which relates to a cylindrical secondary battery manufacturing device capable of effectively performing line balancing in a circulation manufacturing line.According to one example of the present invention, it is possible to provide a cylindrical secondary battery manufacturing device and a cylindrical secondary battery manufacturing method, capable of automatically determining an appropriate quantity of carriers during circulation in a circulation manufacturing line through a master carrier distinguished from general carriers and a sensor sensing the master carrier.
Absstract of: WO2025078694A1
The invention relates to a measuring device (10) for determining at least one property of a planar element (31) of the battery cell-producing industry, wherein the measuring device (10) is arranged in a measuring relationship to a surface (32) of a planar element (31) placed at the top of an element stack (30) and is configured to determine image data of the surface (32), comprising a data processing device (50) which is configured to process the determined image data and herefrom to determine at least one property of the planar element (31). The measuring device (10) has at least one laser measuring device (51) which is configured to measure the distance to the surface (32) of the planar element (31) by means of a laser beam (57) directed onto the planar element, wherein the data processing device (50) is configured to link the determined image data and the distance data from the at least one laser measuring device (51).
Absstract of: 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.
Absstract of: 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.
Absstract of: EP4794031A1
The present disclosure provides a lithium supplement and belongs to the technical field of energy storage. The lithium supplement includes: a rich-lithium lithium iron oxide material, and a coating layer coated on a surface of the rich-lithium lithium iron oxide material. A material of the coating layer includes lithium pyrophosphate. The present disclosure is beneficial for solving technical problems such as poor stability in air and poor safety of the rich-lithium cathode materials in related technologies to achieve effectively supplementation.
Absstract of: EP4794073A1
0001 A battery, a battery pack, a housing, and a housing assembly are provided. The battery includes a housing, a cover assembly and a first sealing element. A first opening is formed at one end of the housing, the cover assembly is connected to the housing and seals the first opening, the first sealing element is disposed between the cover assembly and the housing. The first sealing element wraps a side surface of the cover assembly and forms a sealed connection to the cover assembly and the housing, and a gap is formed between the first sealing element and the side surface of the cover assembly.
Absstract of: EP4793632A1
0001 A secondary battery inspection apparatus according to an embodiment of the present disclosure for solving the above problems includes a plurality of first mirrors formed radially to be spaced apart from a central axis of a body by a first radius; a plurality of second mirrors formed radially to be spaced apart from the central axis by a second radius smaller than the first radius; a plurality of prism mirrors disposed on the inner side of the plurality of first mirrors and the plurality of second mirrors in a direction of facing the plurality of first mirrors and the plurality of second mirrors, respectively, and formed radially to be spaced apart from the central axis by a third radius smaller than the second radius; and a light receiving unit that receives light reflected through the prism mirror.
Absstract of: EP4794044A1
The present invention relates to a lithium secondary battery including a pre-lithiated negative electrode and a positive electrode, in which a charge capacity N/P ratio (%) expressed by Formula 1 satisfies a range of 108% or more and 123% or less, thereby securing life performance, and to a battery module and a battery pack including the same.
Absstract of: EP4794019A1
0001 A positive electrode active material includes a lithium nickel-based oxide having the content of nickel (Ni) ranging from about 50 mol% to 70 mol% among total transition metals, and a coating layer formed on a surface of the lithium nickel-based oxide and including cobalt (Co) and lithium (Li). The coating layer has a form including both dot-shaped and film-shaped phases, and the weight ratio of lithium (Li) to cobalt (Co) in the positive electrode active material ranges from about 5 to 20.
Absstract of: 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.
Absstract of: 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.
Absstract of: 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.
Absstract of: 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.
Absstract of: 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).
Nº publicación: EP4792377A1 19/08/2026
Applicant:
VERKOR [FR]
Verkor
Absstract of: WO2026132690A1
The invention relates to a current collector (10) for a prismatic electric battery cell (1), the current collector comprising a lateral section (30) intended to be electrically connected to current-collecting tabs (55) of an assembly (50) of electrodes (51, 53) of the battery cell (1), the lateral section (30) extending between a proximal portion (31) and a free distal portion (35), the lateral section (30) comprising a generally planar main portion (33) connecting the proximal portion (31) and the distal portion (35), and forming a recess (d37) relative to the proximal portion (31) and the distal portion (35), to form a cavity (37) intended to receive the current-collecting tabs (55). The invention also relates to an assembly (5) and to a battery cell (1) comprising such a current collector (10).
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