Absstract of: WO2024174084A1
Provided in the present application are a secondary battery and an electronic device. In the secondary battery, an electrode assembly is accommodated in a packaging pouch; one end of an electrode terminal is electrically connected to the electrode assembly, and the other end of the electrode terminal extends out of the packaging pouch; a heating module comprises an insulating layer, and a body portion, an encapsulating portion and an extension portion, which are sequentially connected, wherein the body portion is arranged inside the electrode assembly or between the electrode assembly and the packaging pouch, the encapsulating portion is arranged in the packaging pouch, the extension portion is arranged outside the packaging pouch, and the insulating layer completely covers the outer surface of the body portion; an encapsulating layer is at least partially arranged on the surface of the encapsulating portion and is sealingly connected to the packaging pouch; in the thickness direction of the heating module, there is an overlap region between the insulating layer and the encapsulating layer, and in the overlap region, the insulating layer is sealingly connected to the encapsulating layer and is located between the body portion and the encapsulating layer; and in the length direction of the electrode assembly, the length of the overlap region is Δh, and the length of the encapsulating layer is h, wherein 0.1 mm ≤ Δh ≤ h. The secondary battery of the present application ha
Absstract of: WO2024174295A1
A battery cover plate, comprising a cover plate body (1). The cover plate body (1) is provided with a mounting recess (2), an explosion-proof valve (3) is mounted in the mounting recess (2), at least one blasting line is provided on at least one surface of the explosion-proof valve (3), the explosion-proof valve (3) is provided with a first injection molding surface on the outer side of the blasting line, and the first injection molding surface and a second injection molding surface of the mounting recess (2) are provided with a plastic layer (4) which is formed by means of integral injection molding. The explosion-proof valve (3) and the cover plate body (1) are fixedly connected by means of the plastic layer (4), and an existing laser welding connection fixing process is replaced, thereby avoiding adverse effects caused by high temperature in the laser welding process, achieving a stable explosion-proof value, improving the yield, and reducing the manufacturing cost.
Absstract of: US2024287230A1
A copolymer and a dispersion using same, the copolymer including two or more monomers selected from among a monomer containing two or more substituted or unsubstituted aromatic rings, a monomer containing a straight-chain or branched aliphatic hydrocarbon having 5 to 22 carbon atoms, and a polar monomer containing any one selected from the group consisting of cyano (CN), pyrrolidone (NC4H6O) and carboxylic acid (COOH).
Absstract of: US2024287229A1
Disclosed is a polymer composition comprising a) a matrix comprising an elastomeric polymer; b) a plurality of plastic crystals dispersed within the matrix to form a three-dimensional interconnected phase of plastic crystals, and wherein the polymer composition exhibits an ionic conductivity of at least about 1.1 mS/cm at about 20° C. Also disclosed herein are electrochemical cells comprising the same and methods of making and using the same.
Absstract of: US2024286901A1
The present disclosure relates to a method for preparing salts of bis(fluorosulfonyl)imide and to a method for preparing alkali metal salts of bis(fluorosulfonyl)imide from said bis(fluorosulfonyl)imide salts. More specifically. the invention provides a new method for producing these salts of bis(fluorosulfonyl)imide which is implementable at industrial scale and providing high-purity bis(fluorosulfonyl)imide salts.
Absstract of: US2024286915A1
There are disclosed aluminum trihydroxide particles in which a D50 of the particles is about 3.0 μm or less, a BET of about 3.0 m2/g or more, and a Li content of about 500 ppm or more.
Absstract of: US2024286914A1
The invention provides a method of producing an annealing separator, an annealing separator and a grain-oriented magnetic steel. An annealing separator obtained by the method has high purity and excellent dispersibility and bonding strength, thus allowing formation of a uniform, dense forsterite layer on the surface of a grain-oriented magnetic steel. The method of producing an annealing separator comprises the following steps: step (1) in which magnesium oxide and an ammonium salt solution are mixed and reacted to prepare a magnesium salt solution and ammonia, and then the purified magnesium salt solution and the ammonia are reacted to obtain magnesium hydroxide, step (2) in which one portion of the obtained magnesium hydroxide is subjected to high temperature ageing at 155 to 230° C. while another portion of the obtained magnesium hydroxide is subjected to low temperature ageing at 10 to 100° C., and step (3) in which the magnesium hydroxides aged under the different conditions are mixed and burned to obtain magnesium oxide for use as an annealing separator.
Absstract of: WO2024176982A1
A positive electrode (10) according to the present disclosure comprises: a positive electrode active material (11) that contains lithium and a transition metal; a first solid electrolyte (12) that contains Li, M1, M2, and F; and a second solid electrolyte (13) that has a composition differing from that of the first solid electrolyte (12). M1 is at least one element selected from the group consisting of Ti and Nb. M2 is at least one element selected from the group consisting of Ca, Mg, Al, Y, and Zr. The positive electrode (10) has a first surface (10a) that, in a battery, forms an interface with a solid electrolyte layer. In a surface layer region (10b) including the first surface (10a), a first volume ratio of the first solid electrolyte (12) with respect to the entire amount of the solid electrolyte is not less than 10 vol%.
Absstract of: WO2024177341A1
A method for producing a solid sodium electrolyte according to an embodiment of the present invention comprises the steps of: (a) preparing sintered bodies for beta-alumina production and powder pellets comprising a sodium source (or powder packs); (b) laminating the sintered bodies and the powder pellets comprising a sodium source (or powder packs) in alternation to prepare a laminate; and (c) heat-treating the laminate to subject the sintered bodies to gas-phase conversion, wherein the powder pellets (or powder packs) may be molded bodies of powder containing a sodium source.
Absstract of: WO2024177272A1
Disclosed are: aluminum trihydroxide particles having a D50 of around 3.0 µm or less, a BET of around 3.0 m2/g or more, and a Li content of around 500 ppm or more; and a separator, an electrode assembly, and a lithium secondary battery including same.
Absstract of: WO2024177237A1
Disclosed are an electronic device and a control method for compensating for charging voltage deviation. The electronic device comprises a battery, a first charging circuit for charging the battery by a preset method, a second charging circuit for charging the battery by a CV method, and at least one processor. The at least one processor charges the battery with the first charging circuit. When a charging current of the battery falls to a preset value or lower, the at least one processor switches the first charging circuit to the second charging circuit. After the switching to the second charging circuit, the at least one processor identifies a charging voltage value of the second charging circuit. When the difference between a reference voltage value and the identified charging voltage value of the second charging circuit is greater than or equal to a preset offset value, the at least one processor adjusts the identified charging voltage value.
Absstract of: WO2024174335A1
Provided in the present application are a modified lithium cobalt oxide positive electrode material and a preparation method therefor, and a lithium battery. The modified lithium cobalt oxide positive electrode material comprises the following components which are mixed and sintered: a doped cobaltosic oxide precursor, an M oxide and a lithium source. The doping concentration of lanthanum in the doped cobaltosic oxide precursor gradually decreases from inside to outside, and the doping concentration of N in the doped cobaltosic oxide precursor gradually increases from inside to outside. The modified lithium cobalt oxide positive electrode material has a high specific capacity, a long cycle life, high storage performance and high safety performance.
Absstract of: WO2024174138A1
Disclosed in the present application are a positive electrode sheet (230), a battery, an electric apparatus, and an electrode sheet preparation method. The positive electrode sheet (230) comprises a supporting layer and an active substance layer (232), wherein the active substance layer (232) is provided with a recess (2321), the recess (2321) is provided with a filling layer (234), and the height of the filling layer (234) is less than the depth of the recess (2321). The filling layer (234) is formed by means of converting a supplementary material layer, a pore can be formed between the positive electrode sheet (230) and a negative electrode sheet (240), which facilitates the outflow of a gas and electrolyte wetting, such that the phenomena of lithium precipitation and black spots can be alleviated, and the cycle performance and dynamic performance of the battery are improved. A supplementary material comprises a lithium-supplementing material and a sodium-supplementing material, thereby facilitating an improvement in the capacity of the battery.
Absstract of: WO2024174376A1
Provided is a flexible circuit board, comprising an intermediate layer (1) and two protective layers (2) coating two opposite sides of the intermediate layer (1); the intermediate layer (1) comprises a substrate layer (11) located in the middle, the substrate layer (11) being provided with a via hole (111); the intermediate layer (1) further comprises a first circuit layer (12) and a second circuit layer (13) respectively provided on two opposite sides of the substrate layer (11), a first covering layer (14) and a second covering layer (15) respectively provided on the two opposite sides of the substrate layer (11), and a conductive member (112) embedded in the via hole (111) and connecting the first circuit layer (12) and the second circuit layer (13) into a whole, the first circuit layer (12) being embedded in the first covering layer (14), and the second circuit layer (13) being embedded in the second covering layer (15). The flexible circuit board can avoid risks such as film breakage of dry films during covering film lamination, and the defect of hole breakage occurring during etching.
Absstract of: US2024287115A1
Various embodiments relate to a method for producing a metal-organic framework (MOF) having a desired redox conductivity and including redox-active linkers, having ω-alkyl-ferrocene groups, via de novo solvothermal synthesis. Various embodiments relate to a metal-organic framework (MOF) linker comprising an ω-alkyl-ferrocene group. Various embodiments relate to a metal-organic framework (MOF), having a first plurality of redox-active linkers, each having an ω-alkyl-ferrocene group. The MOF according to various embodiments, may further have one or more redox-inactive linkers. Various embodiments relate to materials, apparatuses, and components that include the MOF according to various embodiments. For example, various embodiments relate to thin-films, bulk powders, or electrodes.
Absstract of: US2024286912A1
The present invention is to provide a means for efficiently and economically separating and recovering transition metals including nickel and cobalt, and lithium from an aqueous sulfate solution comprising the transition metal and lithium as major components.The present invention is a process for producing lithium sulfate comprising:a step of concentration-crystallization to an aqueous solution comprising at least lithium sulfate and a transition metal sulfate as main components so as to obtain a slurry comprising lithium sulfate as a solid content, anda step of solid-liquid separation of the slurry obtained in the step of concentration-crystallization so as to separate lithium crystals and a crystallization mother liquor.
Absstract of: US2024286922A1
A lithium metal composite oxide contains a secondary particle which is an aggregate of primary particles and a single particle which exists independently of the secondary particle, in which the lithium metal composite oxide has a layered rock-salt structure, is represented by Composition Formula (I), and satisfies (1) and (2) below.(1): 1.2≤LA/LB<1.60 (LA is a crystallite diameter obtained from a diffraction peak within the range of 2θ=18.8±1° and LB is a crystallite diameter obtained from a diffraction peak within the range of 2θ=38.3±1° in a diffraction peak obtained from powder X-ray diffraction using CuKα rays.)(2): a Me occupancy at a lithium site in the layered rock-salt structure is 2.5% or less, as determined by analyzing the diffraction peaks by the Rietveld analysis method, and the Me is Ni, Co, Mn, or X1.
Absstract of: US2024286924A1
The present invention provides a positive electrode composite material, a preparation method thereof, a positive electrode and a lithium ion secondary battery. The positive electrode composite material comprises: a positive electrode matrix material doped with Mg element; and a fluoride present on the surface of the positive electrode matrix material in a dotted form, the fluoride containing MgF2. By the positive electrode composite material, the method for preparing the positive electrode composite material, and the positive electrode and the lithium ion secondary battery which contain the positive electrode composite material in the present invention, the positive electrode matrix material in the lithium ion secondary battery can be effectively prevented from being corroded by an electrolyte, and more lithium ion channels can be reserved, thereby improving the cycle performance of the lithium ion secondary battery, and reducing the impedance increase of the lithium ion secondary battery while not affecting the capacity and initial impedance of the lithium ion secondary battery.
Absstract of: WO2024177242A1
A battery management device according to an embodiment of the present invention, disposed in a battery system to which a fresh battery can be added, may comprise: at least one processor; and a memory which stores at least one instruction to be executed through the at least one processor. The at least one instruction may comprise: an instruction for, if the battery system is switched to a mode for addition of a fresh battery, identifying a target SOC which is defined on the basis of the SOC of an already installed battery and the initial SOC of the fresh battery; an instruction for controlling charging/discharging of the already installed battery such that the already installed battery has the target SOC; and an instruction for, if the already installed battery reaches the target SOC, ending the charging/discharging control in order to add the fresh battery.
Absstract of: WO2024177214A1
Provided is a composite solid electrolyte layer having excellent power capability and excellent long-term cycle stability. One embodiment of the present invention provides a composite solid electrolyte layer comprising: a solid electrolyte layer comprising a solid electrolyte; an electron blocking layer disposed on at least one surface of the solid electrolyte layer; and a lithiophilic layer disposed on the electron blocking layer.
Absstract of: WO2024176913A1
A battery pack according to one aspect of the present disclosure comprises a battery, a cell holder, a substrate, a first connection terminal, a second connection terminal, a busbar, and two conductive pins. The busbar includes a shunt resistor, and is mounted on a first surface and soldered to a second surface. The shunt resistor is disposed over a line passing through the center between the first cell and the second cell. The two conductive pins protrude from a first end and a second end of the shunt resistor to the second surface via the first surface.
Absstract of: WO2024176901A1
Problem To reduce the power required for controlling the temperature of on-board equipment and for air conditioning a vehicle interior after initiating travel, and to increase the cruising distance of an electric vehicle. Solution Provided is a heating medium management system comprising: an electric vehicle that travels using electric power supplied from a battery and is provided with a heating medium circuit that adjusts the temperature of at least the battery; and a heating medium supply device that is provided outside of the electric vehicle, adjusts the temperature of the heating medium, and supplies the heating medium to the heating medium circuit. In the heating medium supply device, information indicating the temperature and target temperature range of the heating medium of the heating medium circuit is acquired, and if the temperature of the heating medium of the heating medium circuit is not within the target temperature range, the heating medium stored in the heating medium supply device is supplied to the heating medium circuit.
Absstract of: WO2024174333A1
Disclosed in the present application are a low-moisture-absorption Prussian blue electrode material, and a preparation method therefor and the use thereof. The low-moisture-absorption Prussian blue electrode material comprises a core and a shell, wherein an inner core is a sodium-rich Prussian blue material, and an outer layer is a sodium-poor Prussian blue material with a sodium content lower than that of an inner layer or without sodium. In the present application, the content of sodium ions in the shell of the material is reduced, and even the presence of sodium ions in the shell of the material is avoided, such that the moisture isolation capacity of the material is improved while a high sodium content is maintained, and the moisture absorption capacity of the material is significantly reduced. Compared with direct coating with an isolation layer to isolate moisture, the obtained material has better electrochemical sodium storage performance, and the cycling stability thereof is also greatly improved.
Absstract of: WO2024174328A1
The present application relates to the technical field of lithium ion batteries, and discloses a high-nickel large-particle ternary precursor and a preparation method therefor. The chemical formula of the high-nickel large-particle ternary precursor is NixCoyMn(1-x-y)(OH)2, wherein 0.90≤x<0.98, and 0
Nº publicación: WO2024174069A1 29/08/2024
Applicant:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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Absstract of: WO2024174069A1
Provided are a lithium-rich metal oxide and a preparation method therefor, a positive electrode sheet, a battery cell and a battery, which belong to the technical field of batteries. The lithium-rich metal oxide comprises a lithium-rich metal oxide core and residual lithium on the surface of the lithium-rich metal oxide core. On the basis of 100 parts by weight of the lithium-rich metal oxide, the content k of the residual lithium satisfies: k≤0.5%; and the diffusion coefficient D of lithium ions in the lithium-rich metal oxide satisfies: D≥1.0×10-15cm2/s. The lithium-rich metal oxide of the present application is beneficial for improving the performance of a battery cell when same is applied to the battery cell.