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1111
resultados
Última actualización
02/09/2024 [07:41:00]
Resultados 525 a 550 de 1111
Resumen de: WO2024169225A1
The present application relates to the technical field of energy. Provided are a battery module, an energy storage system, a power station and a charging network, which aim to solve the technical problem of the heat dissipation of a battery module being relatively poor. The battery module provided in the present application comprises a cell module and a first cooling plate. The cell module may comprise a frame and at least two cells, wherein the at least two cells are arranged side by side, and two adjacent cells are connected in series by means of a busbar; and the frame is arranged at the at least two cells and is provided with mounting holes and an adhesive groove; each busbar is correspondingly mounted in one mounting hole; and the adhesive groove may be filled with a thermally-conductive structural adhesive, and the busbars are in thermally conductive contact with the thermally-conductive structural adhesive. In addition, the first cooling plate is in thermally conductive contact with the thermally-conductive structural adhesive, and the first cooling plate is fixed onto the cell module by means of the thermally-conductive structural adhesive. In this way, heat generated by cells can be conducted to a first cooling plate by means of busbars and a thermally-conductive structural adhesive, thereby achieving heat exchange with the a cooling plate; and a thermally conductive path is relatively short, such that the heat dissipation efficiency of a battery module can be effect
Resumen de: WO2024169212A1
A positive electrode active material, a preparation method therefor, a positive electrode sheet, a secondary battery, and an electrical apparatus. The positive electrode active material is a carbon composite polyanionic compound, and the positive electrode active material has the following general formula: Na4-xR3-yMz(PO4)2P2O7/C, where R comprises at least one of Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Sn, Hf, Ta, W and Pb, and M comprises at least one of Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Sn, Hf, Ta, Si, W and Pb, 0≤x≤0.5, 0≤y≤0.5, 0≤z≤x+y, and x and y not being 0 simultaneously.
Resumen de: WO2024169085A1
The present application relates to a battery and an electric device. The present application relates to a battery and an electric device. The battery comprises a case, a battery assembly and a protective assembly, wherein the battery assembly is arranged inside the case and comprises a plurality of battery cells; a gap is formed between two adjacent battery cells and extends in the height direction of the battery cell, and the gap comprises two openings opposite each other in the height direction; and the protective assembly is connected to two adjacent battery cells and covers at least one of the openings of the corresponding gap. The protective assembly of the present application can have a certain blocking effect on external foreign matter, and alleviates the problem of uneven stress on the battery cells due to foreign matter, so as to reduce the possibility of lithium plating in the battery cells, and thus improve the cycle performance of the battery cells, thereby prolonging the service life of the battery.
Resumen de: WO2024169073A1
The present invention relates to the technical field of lithium battery powered grease guns, provides a lithium battery powered grease gun, and mainly aims to provide a device capable of accurately measuring a grease filling amount, to solve the problem that conventional lithium battery powered grease guns cannot accurately measure a grease filling amount. The lithium battery powered grease gun comprises a storage container, a metering component and a driving component; grease is stored in the storage container; the metering component is located outside the outlet of the storage container, and the grease in the storage container can flow to a grease outlet after passing through the metering component; the driving component is connected to the storage container, and when the driving component is started, the grease in the storage container can be pressed into the metering component. Under the driving of the driving component, the grease in the storage container flows out from the grease outlet after passing through the outlet and the metering component. In the process, the metering component can meter the grease flowing therethrough, so that the accurate metering of the grease discharge amount of the lithium battery powered grease gun is realized.
Resumen de: WO2024169399A1
The present application belongs to the technical field of module power supply locking. Disclosed is a locking device of a modular battery. The locking device comprises a casing (1), the middle of the casing (1) being provided with a limiting sliding recess (4), and the middle of the limiting sliding recess (4) being provided with a sliding locking member (3). The lower end of the casing (1) is provided with a bottom casing (5), the two sides of a middle recess in the bottom portion of the bottom casing (5) being provided with electrode elastic pieces (8), and the positions of the upper end of the casing (1) corresponding to the electrode elastic pieces (8) being provided with electrode contact pieces (7). By means of contact between the electrode contact pieces (7) inside the casing (1) and the electrode elastic pieces (8) of the bottom casing at the lower end of another casing, a signal is generated and input to a chip, and the chip controls a motor (10) to rotate; and an eccentric wheel (11) drives a transmission rod (14) to move, a sliding channel (12) on the transmission rod (14) enables a connection shaft (13) to move, and the connection shaft (13) drives the sliding locking member (3) to move in a set guide rail direction, such that the sliding locking member (3) extends out of the limiting sliding recess (4) and is inserted into a corresponding locking recess (6) of another casing (1), thereby achieving locking. During unlocking, after a key (9) is pressed, the motor (
Resumen de: WO2024169403A1
A battery. The battery comprises a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte. Additives of the electrolyte comprise a phosphorous acid trinitrile compound and an alkyl polynitrile compound, and the battery meets the following relational expression: A≥B/10, wherein A is the percentage content of the total mass of a first additive and a second additive accounting for the total mass of the electrolyte, B is the areal density of the positive electrode, and the unit is mg/cm2. The battery can solve the problems that the side reaction between an electrolyte and an electrode interface of a battery under a high voltage is great, and the high-temperature cycle performance and the high-temperature storage performance of the battery deteriorate significantly under the high voltage. Electrolyte additives of proper amounts are added according to the areal density of the positive electrode, so that the positive electrode has a very stable interface film and interface coordination effect, the stability of the electrolyte and the positive electrode interface is remarkably improved, the consumption of the electrolyte and the damage to the positive electrode structure in the battery cycle process are reduced, and the high-temperature cycle performance and the high-temperature storage performance of the battery under the high voltage are remarkably improved.
Resumen de: WO2024169402A1
Provided are a negative electrode additive, a negative electrode sheet, a secondary battery, and an electric device. The negative electrode additive comprises: a core part and a shell part covering the outer side of the core. The core part comprises a first polymer and a dead-lithium activating agent embedded in the first polymer. The dead-lithium activating agent is distributed inside the first polymer. The shell part comprises a second polymer. The swelling ratio of the first polymer is denoted as C1, the swelling ratio of the second polymer is denoted as C2, and the swelling ratio of the first polymer and the swelling ratio of the second polymer satisfy: C1
Resumen de: WO2024169105A1
Provided in the present invention are a battery box body capable of being stacked in multiple layers, and a system. The battery box body is a box-shaped structure; a circle of threaded holes are provided on the periphery of the top portion of the battery box body, and screw mounting unthreaded holes corresponding to the threaded holes are provided on the bottom portion of the battery box body; between a upper-layer battery box body and a lower-layer battery box body, screw fasteners penetrate through the screw mounting unthreaded holes of the upper-layer battery box body and the threaded holes of the lower-layer battery box body, thereby fixedly connecting the upper-layer battery box body and the lower-layer battery box body. In the present invention, a battery frame is not in use, and the upper-layer battery box body is directly stacked on the lower-layer battery box body, so as to greatly increase the space utilization rate of the battery box bodies in a battery system, allowing vehicles to carry more electric quantity in the same volume. In addition, the solution also allows a cooling system to have a beneficial effect on the top portions of the batteries, thus improving the heat management efficiency. Furthermore, the solution also aids in the convenient connection of wire harnesses and liquid passages between the battery box bodies.
Resumen de: WO2024169401A1
A negative pole piece, a preparation method therefor, a secondary battery, and an electrical apparatus. The negative pole piece comprises: a negative electrode current collector, a lithium-philic coating layer disposed on at least one side of the negative electrode current collector, and a negative electrode active material layer located on the side of the lithium-philic coating layer away from the negative electrode current collector; the lithium-philic coating layer comprises lithium-philic particles, and the lithium-philic coating layer contains a plurality of pores. Providing the lithium-philic coating layer on the surface of the negative electrode current collector allows lithium metal to preferentially nucleate on the surface of the lithium-philic particles in a late stage of the cycle, causing lithium metal to start to grow from the negative electrode current collector, thereby effectively reducing the deposition of lithium metal on the surface of the negative electrode, reducing the generation of lithium metal dendrites and avoiding same piercing a diaphragm resulting in contact between a positive electrode and a negative electrode, and improving the safety of the secondary battery. In addition, the volume of the pores between particles of the negative electrode active material increases with the growth of the lithium metal, thereby increasing the overall surface area of the negative electrode pole piece, improving late-stage transmission behavior of lithium ions in g
Resumen de: WO2024169355A1
A tab cutting control system. A sensing module (400) outputs a first detection signal to a controller (500) when detecting that an incoming material, i.e. an electrode roll, passes through a first cutting mechanism (100); the controller transmits a first control signal to the first cutting mechanism; the sensing module outputs a second detection signal to the controller when detecting that an electrode sheet to be machined passes through a second cutting mechanism (300); and the controller transmits a second control signal and a third control signal to a movement direction adjustment mechanism (200) and the second cutting mechanism. The present application further relates to a tab cutting control method and a cutting and stacking integrated-machine device.
Resumen de: WO2024169129A1
A slitting apparatus (100), comprising an unwinding device (1), a first slitting device (2), a first conveying device (3), a second slitting device (4) and a plurality of winding devices (5). The unwinding device (1) is configured to output an electrode sheet strip (200); the first slitting device (2) is configured to receive the electrode sheet strip (200) outputted by the unwinding device (1) and to cut a foil area of the electrode sheet strip (200) so as to form a plurality of sub-strips (201); the first conveying device (3) is configured to receive the plurality of sub-strips (201), and to mutually space, tile and output the plurality of sub-strips (201); the second slitting device (4) is configured to receive the plurality of sub-strips (201) which are mutually spaced and tiled, and to cut coating areas of the sub-strips (201) so as to form a plurality of electrode sheets (202); the plurality of winding devices (5) are connected to the second slitting device (4); and the plurality of winding devices (5) are configured to wind the plurality of electrode sheets (202). Using the slitting apparatus has the advantages of a relatively small number of cutting tools, a low apparatus cost, and a relatively small apparatus volume and thus a relatively small space occupied thereby.
Resumen de: WO2024169358A1
Disclosed in the present application are a negative current collector, a preparation method therefor, and a battery and electric device including same. The negative current collector comprises a substrate and a first three-dimensional framework layer, which is located on at least one surface of the substrate, wherein the first three-dimensional framework layer is provided with a hole structure, and comprises a first fiber, which comprises a carbon-based material.
Resumen de: US2024283115A1
A safety mechanism includes a connecting piece and an expanding layer. The connecting piece includes a first connecting portion, a fusing portion, and a second connecting portion that are connected in sequence. The expanding layer is disposed on a side of the first connecting portion or the second connecting portion in a first direction and located at a position of the first connecting portion or the second connecting portion close to the fusing portion. The first direction is a thickness direction of the connecting piece.
Resumen de: US2024282954A1
This positive electrode active material for a lithium secondary battery contains a lithium metal composite oxide containing at least Li and Ni, and satisfies (1) and (2):(1) a pore volume in a range of pore diameter of 2 to 10 nm is 9.0×10−4 cm3/g or less in a pore diameter distribution in an adsorption isotherm as determined by measurement of an adsorption isotherm and a desorption isotherm of nitrogen gas and a Barrett-Joyner-Halenda method; and(2) a pore diameter at which a log differential pore volume is a maximum value in a log differential pore volume distribution in a range of pore diameter of 2 to 200 nm based on a pore diameter distribution in a desorption isotherm as determined by measurement of an adsorption isotherm and a desorption isotherm of nitrogen gas and a Barrett-Joyner-Halenda method is more than 10 nm and 200 nm or less.
Resumen de: US2024282951A1
A cathode active material precursor for a lithium secondary battery includes nickel and at least one metal except for nickel. The cathode active material precursor includes primary particles having a major axis length of 500 nm or less and an aspect ratio in a range from 1.0 to 3.0. A volume ratio of micropores having a pore diameter of 2 nm or less relative to a total pore volume is 1.4% or less.
Resumen de: US2024282945A1
Disclosed is an active material composite particle including Si and having low volume expansion in charging. The active material composite particle of present disclosure comprises a plurality of first particles and at least one second particle, wherein the first particles comprise porous silicon, a reaction potential between the second particle and Li is lower than a reaction potential between the porous silicon and Li, and a ratio D2/D1 of a particle diameter D2 of the second particle to a particle diameter D1 of the first particles is 2.0 or more.
Resumen de: US2024283086A1
A system can comprise a shell, one or more battery cells disposed within the shell, and a pressure-directing layer disposed between the battery cell(s) and the shell's interior surface. Each of the battery cell(s) can comprise an enclosure including a gas-impermeable portion and a venting portion configured to permit gas to exit the enclosure. The pressure-directing layer can comprise one or more openings that each overlie the venting portion of the enclosure of at least one of the battery cell(s). In some systems, the pressure-directing layer can have a thickness that is less than a distance between the battery cell(s) and the interior surface of the shell such that there is a space between the battery cell(s) and the interior surface of the shell. In some systems, the pressure-directing layer can be coupled to the battery cell(s) and the interior surface of the shell and comprise a resilient material.
Resumen de: US2024282922A1
In a method of preparing an immobilized selenium system or body, a selenium-carbon-oxygen mixture is formed. The mixture is then heated to a temperature above the melting temperature of selenium and the heated mixture is then cooled to ambient or room temperature, thereby forming the immobilized selenium system or body.
Resumen de: US2024283015A1
An electrochemical battery cell may include an electrode assembly, a liquid electrolyte, a metallic battery enclosure or “can,” and a liquid solution. The electrode assembly and the electrolyte solution may be disposed within the battery can. The liquid solution may be disposed between the electrode assembly and the battery can. The liquid solution may include an organic solvent, a cross-linkable polymer and a cross-linking agent which may be converted into a conductive layer by reacting the cross-linkable polymer and the cross-linking agent of the liquid solution to form a reaction product. The liquid solution may include an ion conducting salt. The reaction product may be a polymer matrix and the organic solvent and/or the ion conducting salt may be contained within the polymer matrix. Reacting the cross-linkable polymer and the cross-linking agent may include applying heat to the liquid solution to convert the liquid solution into the reaction product.
Resumen de: US2024282920A1
A lithium-ion secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution. The positive electrode plate includes a positive current collector and a positive electrode material layer disposed on at least one surface of the positive current collector. The positive electrode material layer includes a first positive electrode material having formula Li1+xFeyMnzM1-y-zPO4-tAt and a second positive electrode material having formula Li2+rNi0.5-qCu0.5-qTivNp+q-vO2-sBs. The electrolyte solution includes vinylene carbonate. A content of the vinylene carbonate based on a total mass of the electrolyte solution is 0.1 wt % to 5 wt %. M includes one or more of Ti, Zr, V, or Cr; A includes one or more of S, N, F, Cl, or Br; −0.1≤x<0.1, 0
Resumen de: US2024282946A1
A negative electrode active material is represented by general formula M3Me2X7 (wherein M comprises at least one of La and Ca; Me comprises at least one element that is selected from the group consisting of Mn, Ni, Fe and Co; and X comprises at least one element that is selected from the group consisting of Ge, Si, Sn, and Al). With respect to the XRD pattern obtained by XRD measurement wherein Cu is used for an anticathode, the half-value width of the diffraction peak of the (1 171) plane of the negative electrode active material is 0.4713° or more.
Resumen de: US2024283022A1
Treatment of electrode materials with poly(phosphate sulfate)s, and related articles and methods, are generally described. Some embodiments are associated with reduced gas generation during charge-discharge cycling of electrochemical cells. resulting from the treatment of the electrode materials.
Resumen de: WO2024168546A1
The present invention belongs to the technical field of battery materials, and particularly relates to a Prussian blue analogue nano positive electrode material, a preparation method therefor and a sodium ion battery. A general chemical formula of the Prussian blue analogue nano positive electrode material is NaxMyFe(CN)6z, wherein M is a transition metal element, 0
Resumen de: WO2024168477A1
Provided in the present application are a secondary battery and an electric device. The secondary battery comprises a negative electrode sheet, wherein the negative electrode sheet comprises a negative current collector and a negative membrane layer. The negative membrane layer is provided with a first surface away from the negative current collector and a second surface arranged opposite the first surface, wherein the thickness of the negative membrane layer is denoted by H; the region within a thickness range from the second surface of the negative membrane layer to 0.3H is a first region of the negative membrane layer, and the region within a thickness range from the first surface of the negative membrane layer to 0.3H is a second region of the negative membrane layer; and the first region comprises a first active material, the second region comprises a second active material, the first active material comprises a first silicon-based material, and the first silicon-based material comprises secondary particles formed by aggregation of primary particles.
Nº publicación: WO2024168473A1 22/08/2024
Solicitante:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
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Resumen de: WO2024168473A1
The present application provides a secondary battery and an electrical device. The secondary battery comprises a negative electrode sheet; the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer provided on at least one surface of the negative electrode current collector and comprising a negative electrode active material; the negative electrode active material comprises a carbon-based material and a silicon-based material; the carbon-based material comprises secondary particles formed by aggregation of primary particles; the silicon-based material comprises secondary particles formed by aggregation of primary particles.
BOPI
Sede Electrónica
