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1354
results.
Updated on
10/08/2025 [09:19:00]
Results 1125 to 1150 of 1354
Absstract of: EP4593092A1
Provided in the present application are a preparation method for a positive electrode slurry, a secondary battery, a battery pack and an electric device. The preparation method comprises first stirring, second stirring and third stirring, wherein the first stirring involves stirring a binder and a solvent to prepare a glue solution; the second stirring involves stirring a positive electrode active material and a conductive agent with the glue solution to prepare a mixture; and the third stirring involves stirring the binder and the solvent with the mixture to obtain a positive electrode slurry. The binder and the solvent in the first stirring are respectively the same as the binder and the solvent in the third stirring; based on the total mass of the binder in the first stirring and the binder in the third stirring, the mass ratio of the binder in the first stirring is 50-70%, and the mass ratio of the binder in the third stirring is 30-50%; and based on the total mass of the solvent in the first stirring and the solvent in the third stirring, the mass ratio of the solvent in the first stirring is 50-70%, and the mass ratio of the solvent in the third stirring is 30-50%.
Absstract of: EP4593139A1
This application provides a lithium secondary battery (10) and an electrical device (600). The lithium secondary battery (10) includes: a positive electrode plate, where the positive electrode plate includes a positive current collector and a positive active material layer disposed on at least one side of the positive current collector, and a lithium-ion diffusion coefficient of the positive active material layer is Ds; and an electrolyte solution, where the electrolyte solution includes a solvent. The solvent includes at least one of compounds of the following Formula (I). A mass fraction of the compound of Formula (I) in the solvent is W1. The mass fraction W1 of the compound of Formula (I) and the lithium-ion diffusion coefficient Ds of the positive active material layer satisfy: 2×10<-18> cm<2>/s ≤ W1 × Ds ≤ 8×10<-6> cm<2>/s, and optionally, 3×10<-14> cm<2>/s ≤ W1 × Ds ≤ 7×10<-10> cm<2>/s.In the formula above, R1 and R2 each independently include at least one of a C1 to C3 alkyl or a C1 to C3 haloalkyl. By regulating the lithium-ion diffusion coefficient Ds of the positive electrode material and the mass percent of the compound of Formula (I), the lithium secondary battery (10) can effectively improve the transmission rate of lithium ions in the electrolyte solution, and improve the energy density and fast-charge performance of the lithium secondary battery (10).
Absstract of: EP4593181A1
The present disclosure provides a battery and an electrical device, which relates to the technology field of batteries. The battery comprises a battery cell and a functional component. A side of the battery cell along a first direction is provided with a pressure relief mechanism. The functional component is located on one side of the battery cell where the pressure relief mechanism is provided, and the functional component comprises a thermal management component and a protective component. The thermal management component is attached to the battery cell, and the thermal management component is configured to regulate a temperature of the battery cell. A protective component is connected to the thermal management component and covers at least a portion of the pressure relief mechanism. The protective component is connected to the thermal management component to form an integrated functional component. Therefore, during the assembly process of the battery, the thermal management component and the protective component can be first assembled into a single structure and then mounted on the same side of the battery cell, thus simplifying the mounting process and reducing the difficulty of the battery assembly. In addition, the protective component and the thermal management component are provided on the same side of the battery cell, which is conducive to rationally utilizing the internal space of the box of the battery.
Absstract of: MX2025002681A
A battery pack including a plurality of battery modules, each battery module including a plurality of battery cells, a coolant inlet, and a coolant outlet; a coolant manifold plate for supplying and return coolant to and from the battery modules, the coolant manifold plate including: a wall of the battery pack; a vertical coolant rail; a plurality of horizontal coolant rails, wherein the plurality of horizontal rails are parallel with one another and perpendicular to the vertical rail, the vertical coolant rail supplies coolant to each of the plurality of horizontal coolant rails, and the manifold plate supports each battery module.
Absstract of: EP4593095A1
A method and a system for monitoring a battery manufacturing method process in which a patterned electrode sheet is formed or processed in multiple sub-processes are provided, wherein the patterned electrode sheet includes a plurality of coating patterns, each coating pattern having at least one coated and one uncoated portion. The method includes acquiring, while the patterned electrode sheet moves through the battery manufacturing process, pattern identification data including pattern identification codes indicating positions of the respective coating patterns on the electrode sheet, acquiring measurement data and/or inspection data by measuring and/or inspecting the electrode sheet while it moves through the battery manufacturing process, the measurement data and/or inspection data including a plurality of measurement and/or inspection values for each coating pattern, generating monitoring data for the multiple sub-processes by associating the measurement data and/or inspection data with the pattern identification data, and matching the monitoring data generated for respective sub-processes such that pattern identification data of one sub-process and pattern identification date of another sub-process are matched with each other, insofar as they are acquired from an identical physical part of the electrode sheet.
Absstract of: AU2023373492A1
A method for separating black mass from electrodes of spent lithium ion batteries includes separating electrode pieces from remainder of material of a portion of a spent lithium ion battery. The electrode pieces are heated to a temperature in a range from about 200 °C to about 350 °C for a predetermined period of time to obtain pre-heated electrode pieces. The pre-heated electrode pieces are disposed in a neutral liquid to obtain a first suspension. Ultrasound vibrations are applied to the first suspension to separate the black mass and the binder from the metal pieces. Metal pieces, binder material and black mass from the electrode pieces are then segregated to obtain black mass.
Absstract of: EP4593149A1
A lithium secondary battery including a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode active material comprising lithium iron phosphate particles, and the positive electrode has a loading amount of 450 mg/25 cm<sup>2</sup> to 740 mg/25 cm<sup>2</sup>, the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, wherein the organic solvent includes ethylene carbonate, and dimethyl carbonate, and the dimethyl carbonate is included in 5 vol% to 75 vol% in the organic solvent, and the additive contains vinylene carbonate, and the weight ratio of the vinylene carbonate to the dimethyl carbonate is greater than 0 to 0.2 or less.
Absstract of: EP4593146A1
The present invention provides a lithium secondary battery comprising: a positive electrode; a negative electrode; a separator; and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes lithium iron phosphate particles, the non-aqueous electrolyte includes lithium salt, an organic solvent, and an additive, the additive includes an oligomer including repeating units derived from monomers of a specific chemical formula, and the weight average molecular weight Mw of the oligomer is 5,000 g/mol to 25,000 g/mol.
Absstract of: EP4593145A1
The present invention provides a lithium secondary battery including a negative electrode, a positive electrode, a separator, and a non-aqueous electrolyte, wherein the negative electrode includes a silicon-based active material, the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, and the additive includes a compound represented by a specific formula.
Absstract of: EP4593144A1
The present invention provides a lithium secondary battery comprising a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte, wherein the positive electrode comprises a positive electrode active material, the positive electrode active material comprises lithium iron phosphate particles, the nonaqueous electrolyte comprises a lithium salt, an organic solvent, and an additive, and the additive comprises a compound represented by a specific chemical formula.
Absstract of: EP4593157A1
Disclosed herein are a heat transfer device (350) and a secondary battery including the same. The problem to be solved is to provide a heat transfer structure within the secondary battery. To this end, there are provided a heat transfer device (350) that includes a first body (352) configured to be installed between a casing (51, 200) of a secondary battery and a joint between a current collector (342) and a subplate (344) in the secondary battery, wherein the first body (352) includes a first contact surface (352a) configured to contact the joint to receive heat from the joint, and a second contact surface (352b) formed opposite to the first contact surface (352a), the second contact surface (352b) being configured to in contact the casing (51, 200) to transfer heat from the first contact surface (352a) to the casing (51, 200), a secondary battery including the same, and a vehicle (V) including the secondary battery.
Absstract of: GB2637573A
A heat-conducting plate that includes a vapour chamber is manufactured by disposing a vapor core and a wicking layer inside a cavity defined between spaced-apart walls of a casing, injecting a working fluid inside the cavity, and applying a vacuum to the cavity. After the applying of the vacuum to the cavity, the peripheries of the spaced-apart walls are cold welding to one another to seal the working fluid and the vapor core and the wicking layer in the cavity.
Absstract of: EP4593179A1
This application provides an exhaust assembly, a battery pack, and an electrical device. The exhaust assembly includes an exhaust portion, a connecting portion, and a sealing structure. The exhaust portion is configured to receive emissions from a battery cell. The exhaust assembly is connected to a box of the battery pack by the connecting portion. The sealing structure is disposed at a junction between the connecting portion and the box. In this application, high-temperature and high-pressure gases and conductive particles expelled from a thermally runaway battery cell can enter the exhaust portion and be directionally expelled out of the battery pack through the exhaust portion. The connecting portion may be connected to the box of the battery pack by a connecting piece such as a bolt. The sealing structure can seal a gap at a junction between the connecting portion and the box, thereby avoiding gas leakage and preventing normal battery cells in the vicinity from being thermally runaway.
Absstract of: EP4593178A1
An energy storage device is provided in the embodiments of the present disclosure, wherein the energy storage device includes at least one energy storage module, and each energy storage module includes a box body, a plurality of batteries, and a smoke exhaust assembly. The plurality of batteries are arranged in the box body, wherein each battery includes a battery box and a plurality of battery cells, wherein the battery cells include a pressure relief mechanism and electrode terminals; the pressure relief mechanism is arranged on a first wall of the battery cells; the electrode terminals are arranged on a second wall of the battery cells; the second wall is different from the first wall; and the battery box is provided with a first exhaust port. The smoke exhaust assembly is communicated with the first exhaust port of each battery, and is configured to discharge smoke discharged by the plurality of batteries to the outside of the box body. The energy storage device of the present disclosure has a higher level of safety.
Absstract of: EP4592266A1
The present invention relates to a modified bio-sulfur composition that has excellent storage stability and can be used at room temperature. More specifically, the present invention provides a modified bio-sulfur composition using calcium ions and fluorine ions, which exhibits mechanical properties equivalent to or better than conventionally known modified bio-sulfur binders, and at the same time has excellent storage and storage properties at room temperature, ensuring safety when used on concrete at room temperature, and a method for preparing the same.
Absstract of: EP4592325A1
The present application provides a fluoropolymer, a conductive slurry, a positive electrode plate, a secondary battery, and an electrical apparatus. The fluoropolymer comprises a structural unit derived from a monomer represented by formula I and a structural unit derived from a monomer represented by formula II, wherein R<sub>1</sub>, R<sub>2</sub> and R<sub>3</sub> are each independently selected from one or more of hydrogen, fluorine, chlorine and fluorine-substituted C<sub>1-3</sub> alkyl; R<sub>4</sub> and R<sub>5</sub> are selected from hydrogen, substituted or unsubstituted C<sub>1-5</sub> alkyl; and R<sub>6</sub> is selected from one or more of aryl-substituted C<sub>1-5</sub> alkyl, substituted or unsubstituted aryl. The fluoropolymer can improve the filterability, anti-gelling property and storage performance of the conductive slurry, thus significantly broadening a process window of the conductive slurry and improving processability of the conductive slurry.
Absstract of: EP4593143A1
A lithium secondary battery according to the present invention comprises: a battery case; and an electrode assembly and an electrolyte stored in the battery case, wherein the electrode assembly includes a positive electrode, the positive electrode includes a positive electrode active material and a conductive material, the conductive material includes a point-like conductive material and a linear conductive material in a weight ratio of 4:1 to 14:1, and the electrolyte includes a sultone-based compound and a phosphate-based compound as additives in a weight ratio of at least 1:0.1 and less than 1:2.
Absstract of: EP4593232A1
According to an embodiment, an electronic device comprises at least one processor, a first battery, and a second battery, wherein the at least one processor is configured to: identify a first voltage of the first battery and a second voltage of the second battery; identify a first charging current value corresponding to a charging state of the first battery on the basis of the first voltage of the first battery; identify a second charging current value corresponding to a charging state of the second battery on the basis of the second voltage of the second battery; identify a total charging current value and a distribution ratio on the basis of the first charging current value and the second charging current value; set a first charging path for the first battery and a second charging path for the second battery so as to have the distribution ratio; provide a first charging current according to the first charging current value to the first battery through the first charging path; and provide a second charging current according to the second charging current value to the second battery through the second charging path.
Absstract of: EP4593237A1
A charge/discharge testing device 1 performs charge/discharge testing of secondary batteries and is characterized by including: a plurality of probes 16 that are positioned, with respect to a battery tray 7 in which a plurality of secondary batteries 8 are mounted, on the positive electrode side of the plurality of secondary batteries 8, and that correspond respectively to the plurality of secondary batteries; and a pressing unit 5 that includes a cooling means 14, is positioned on the side opposite the probes 16 across the battery tray 7, and moves in a vertical direction, thereby pressing the plurality of secondary batteries 8 toward the probes.
Absstract of: CN120019175A
A method of producing sodium hydroxide (NaOH) or lithium hydroxide (LiOH) and sulfuric acid (H2SO4) includes generating sodium sulfate (Na2SO4) or lithium sulfate (Li2SO4) from battery manufacture and recovery and converting the generated Na2SO4 or Li2SO4 to NaOH, LiOH and H2SO4 by an electrochemical salt decomposition process. The treatment step may be performed in a closed system such that the generated Na2SO4 or Li2SO4 may be used during the conversion process, and optionally a purification step. In particular, LiOH, NaOH, and Na2SO4 are recovered to a battery recovery or battery manufacturing process.
Absstract of: CN119790538A
The present disclosure relates to a continuous process for coating a microporous polyolefin web with a ceramic composition or slurry, followed by drying at an elevated temperature while confining in a transverse direction. Such nets may be used to improve manufacturability, performance, and safety of energy storage devices, such as lithium batteries.
Absstract of: CN119855706A
The present disclosure relates to a method for forming free-standing biaxially oriented microporous polyolefin films. In the method, at least two separate oil-filled cast or rolled films are stacked on top of each other and then subjected to biaxial orientation followed by solvent extraction of processing oil (i.e., plasticizer), evaporation of the solvent, and thermal stabilization, and then separated into separate wound-into-roll microporous films.
Absstract of: TW202431685A
Described herein are, among other things, structured cathodes for use in electrochemical cells (e.g., batteries). In some embodiments, a structured cathode includes at least one electrochemically active material included in a patterned film.The film may be disposed on a substrate (e.g., current collector) or may be free standing. The film has at least one patterned surface, for example has recesses extending into the film. A patterned film may be porous. A patterned film may be made of an assembly of particles including an electrochemically active material. Recesses may include holes or trenches or a combination thereof. Recesses may be formed by removing material from an initial film, such as with laser ablation. Recesses may extend only partially into or entirely through a film. Recesses may be interconnected or separate. Recesses may be disposed regularly or irregularly across a patterned surface.Recesses may be at least partially filled with electrolyte.
Absstract of: EP4593133A1
The present application discloses a method and device for stacking cell pole pieces. The first mechanical hand simultaneously grabs corrected m×n first pole pieces from the first position correction platform, and simultaneously places the m×n first pole pieces on a separator of the same lamination table in m rows and n columns for lamination, and the second mechanical hand simultaneously grabs corrected m×n second pole pieces from the second position correction platform and simultaneously places m×n second pole pieces on a separator on the same lamination table in m rows and n columns for lamination. By simultaneously laminating m×n pole pieces on the same lamination table in an arrangement of m rows and n columns, multiple pole pieces can be stacked at one time, so as to improve the lamination efficiency.
Nº publicación: EP4593162A1 30/07/2025
Applicant:
HUAWEI DIGITAL POWER TECH CO LTD [CN]
Huawei Digital Power Technologies Co., Ltd
Absstract of: EP4593162A1
This application provides an energy storage system and a power supply system. The energy storage system includes a battery pack, a power conversion component, a first liquid runner, a second liquid runner, a first drive apparatus, a second drive apparatus, and a liquid dispenser. The first liquid runner is in contact with the battery pack in a thermally conductive manner, and the first drive apparatus communicates with the first liquid runner. The second liquid runner is in contact with the power conversion component in a thermally conductive manner, and the second drive apparatus communicates with the second liquid runner. The liquid dispenser separately communicates with the first liquid runner and the second liquid runner. When the liquid dispenser is in a first working state, the first liquid runner is isolated from the second liquid runner. Control may be separately performed according to temperature requirements of the battery pack and the power conversion component. When the liquid dispenser is in a second working state, the first liquid runner communicates with the second liquid runner, to form one whole loop. In this way, the battery pack is heated by using heat generated by the power conversion component. A temperature control solution can be adjusted based on a working state, to reduce space occupied by the energy storage system and reduce power consumption.
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