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1126
resultados
Última actualización
30/11/2025 [07:09:00]
Resumen de: WO2025241823A1
Disclosed in the present invention are a manganese iron phosphate precursor, a preparation method therefor, lithium manganese iron phosphate, a positive electrode sheet containing same, and a secondary battery. The preparation method for the manganese iron phosphate precursor comprises the following steps: carrying out a first reaction on a reactant A and a reactant B to prepare the manganese iron phosphate precursor, the reactant A comprising an iron source, a manganese source and water, the reactant B comprising a phosphorus source and water, and at least one of the reactant A and the reactant B comprising a first organic acid. The preparation method provided by the present invention involves a simple process; the manganese phase and the iron phase in a prepared lithium manganese iron phosphate product are uniformly distributed, so that said lithium manganese iron phosphate product has good electrochemical properties when being applied to secondary batteries.
Resumen de: WO2025241865A1
The present application relates to the technical field of vehicles. Provided are a thermal management system, a battery heating method and apparatus, and an electronic device and a storage medium. When it is necessary to heat a battery, a target heat source capable of providing heat for heating is selected from among a plurality of candidate heat sources of the thermal management system in the present application, and by means of a heat pump cycle of a refrigerant loop and a heat exchanger disposed on a coolant side, heat on a refrigerant side or heat recovered from the coolant side are transferred to a battery water pump branch for battery heating. A target heating loop determined on the basis of a target heat source is used to implement heat transfer of the target heat source, thereby recycling heat in different branches/loops in a thermal management system while meeting a battery heating requirement, reducing the energy consumption of battery heating, and ensuring a low-temperature range of a vehicle.
Resumen de: WO2025241857A1
The present invention relates to the field of new energy power system energy storage. Disclosed is a battery aging evaluation method based on multi-source multi-scale high-dimensional state space modeling. The method comprises: acquiring time series of a sample battery in each discharge process of preset discharge counts; on the basis of discharge parameters corresponding to the time series, determining a first state transition path and a second state transition path; determining a working state transition path reference; calculating a plurality of sample distances between the second state transition path and the working state transition path reference; using each sample distance as an input and using a corresponding target SOH value as an output to train a battery aging evaluation model; calculating a target distance between the state transition paths of a target battery to be predicted and the working state transition path reference; and inputting the target distance into the battery aging evaluation model to obtain a SOH value of said target battery. The present invention can improve the precision of battery aging prediction.
Resumen de: WO2025241888A1
An electric device, comprising a battery pack, a battery, and a battery case. The battery case comprises a first case body and a second case body; the first case body is provided with terminal mounting portions; the second case body comprises a case bottom and side walls; the side walls are connected to the case bottom, and together with the case bottom, form a surrounding space having an opening on one side; the first case body covers the opening and is connected to the side walls; and reinforcing portions are provided at the parts of the side walls close to the terminal mounting portions.
Resumen de: WO2025241841A1
Disclosed in the present application are a battery and an electric apparatus. The battery comprises a first layer of battery cells, a second layer of battery cells and a thermal management assembly, wherein the first layer of battery cells and the second layer of battery cells are stacked in a first direction; at least a portion of the thermal management assembly is located between the first layer of battery cells and the second layer of battery cells; and the first layer of battery cells and the second layer of battery cells are both in thermally conductive connection with the thermal management assembly, and the thermal management assembly is used for regulating the temperatures of the first layer of battery cells and the second layer of battery cells. The energy density of the battery can be effectively improved.
Resumen de: WO2025242088A1
Disclosed in the present application are an additive for a lithium-ion battery, and the use thereof. The additive for a lithium-ion battery comprises the following raw materials in parts by weight: 40-70 parts of a first solvent, 1-10 parts of a first polymer, 5-15 parts of a second polymer, 10-20 parts of a small-molecule organic amine and 10-20 parts of a stabilizer, wherein the first polymer contains at least one nitrogen-free polar functional group; the second polymer contains at least one nitrogen-containing polar functional group; and the stabilizer is a hydrazine compound. The additive provided in the present application is used in a lithium-ion battery, and can solve the problems of a thick electrode being prone to cracking and positive electrode particles being difficult to disperse.
Resumen de: WO2025242041A1
Embodiments of the present application provide a composite positive electrode active material and a preparation method therefor and a use thereof. The composite positive electrode active material comprises positive electrode active materials and nitrogen-doped carbon nanotubes, and the nitrogen-doped carbon nanotubes comprise graphite nitrogen. The composite positive electrode active material can achieve high electronic conductivity at a low carbon nanotube content, and can be used to provide a secondary battery having excellent overall performance.
Resumen de: WO2025241753A1
An energy storage case. The energy storage case comprises a housing assembly of the energy storage case, and the housing assembly of the energy storage case comprises a cover assembly of the energy storage case. The cover assembly of the energy storage case comprises a cover and a heat dissipation structure. The cover has an inner surface, and the inner surface of the cover is suitable for facing battery packs. The heat dissipation structure is arranged on the inner surface of the cover and is suitable for protruding toward the battery packs, and the heat dissipation structure is used for being in contact with the battery packs to transfer heat of the battery packs to the cover.
Resumen de: WO2025243375A1
Provided is an all-solid-state battery having: a solid electrolyte layer; a positive electrode layer and a negative electrode intermediate layer provided so as to sandwich the solid electrolyte layer; and a negative electrode current collector foil provided on the negative electrode intermediate layer. In the all-solid-state battery, the solid electrolyte layer and the negative electrode current collector foil have outer shapes larger than the negative electrode intermediate layer. The negative electrode current collector foil is configured to cover the negative electrode intermediate layer, and at least a part of the outer peripheral edge thereof not in contact with the negative electrode intermediate layer is in contact with the outer peripheral edge of the solid electrolyte layer.
Resumen de: WO2025243354A1
In order to inspect a secondary battery (11) in a short time, the resistance (R2, R3) of a secondary battery to be used by applying a surface pressure of a prescribed range (Pmin-Pmax) is measured in a state where at least a surface pressure (P2, P3) lower than the prescribed range is applied to the secondary battery, and the quality of the secondary battery is determined on the basis of at least the measured resistance value.
Resumen de: WO2025243373A1
This method for producing an all-solid-state battery comprises a step for transferring, on a solid electrolyte layer, a negative electrode layer or a negative electrode intermediate layer through roll-pressing in a first direction defined as the advancing direction. The solid electrolyte layer is formed so as to cover an end surface of the positive electrode layer at the terminal end portion thereof in the first direction. The solid electrolyte layer has an inclined part that is shaped such that the upper surface thereof becomes higher along the first direction. The inclined part is provided at least at the terminal end portion of the solid electrolyte layer in the first direction.
Resumen de: WO2025242192A1
Provided are a positive electrode material and a preparation method therefor and a use thereof. The positive electrode material comprises a matrix, and a first carbon layer and a superionic conductor layer which are sequentially coated on the surface of the matrix. The matrix is made of Na4Fe2.9-yM y(PO4)2(P2O7), wherein 0
Resumen de: WO2025242169A1
A traction battery protective plate, and a battery pack and a vehicle including same. The protective plate sequentially comprises, from bottom to top, a first surface layer (1), a buffer layer (4), a first adhesive film layer (6), a metal plate layer (3), a second adhesive film layer (7), a honeycomb core layer (2) and a second surface layer (5). A combination of multiple structures is used, such that the protective plate has the effect of gradient energy absorption, thereby improving impact resistance of the protective plate; different materials can be combined on the basis of different application scenarios so as to meet different requirements; and the thickness of a product has designability, thereby achieving customized preparation on the basis of requirements for mounting dimensions.
Resumen de: WO2025241793A1
The present application relates to the technical field of batteries, and provides a directional heat insulation pad, a battery pack, and an electric device. The directional heat insulation pad comprises a heat insulation material layer and directional heat conduction material layers. The directional heat conduction material layers are arranged on both two sides of the heat insulation material layer in the thickness direction thereof. The heat insulation material layer is configured to prevent heat conduction between battery cells, and the directional heat conduction material layer is configured to conduct heat of the battery cells to the outside, so that heat dissipation of battery cells can be facilitated while heat spreading between the battery cells is prevented.
Resumen de: WO2025241791A1
Embodiments of the present application relate to the technical field of batteries. Disclosed are an electrode assembly and an electrochemical device. The electrode assembly comprises a first electrode sheet, a second electrode sheet, a separator, and a first insulating member. The separator is arranged between the first electrode sheet and the second electrode sheet. The first electrode sheet comprises a first current collector and a first active material layer; the first current collector comprises a first main body part and a first empty foil part; the first active material layer is arranged on at least one surface of the first main body part; and the first main body part is spaced apart from the first empty foil part to form a first gap. The first insulating member is at least partially arranged at the first gap, and the first insulating member is connected to at least one of the first empty foil part, the first electrode sheet, and the second electrode sheet. The first insulating member is arranged at the first gap, so that the first empty foil part can be effectively insulated from the second electrode sheet, preventing an internal short circuit within the electrode assembly caused by electrical connection due to contact between the first empty foil part and the second electrode sheet, and improving the safety and reliability of the electrode assembly.
Resumen de: WO2025241736A1
Provided are a battery heating system, a battery heating control method, and a vehicle. The system comprises: a battery, comprising a first battery pack and a second battery pack; an energy storage element, the energy storage element being separately connected to a negative electrode of the first battery pack and a positive electrode of the second battery pack by means of a wire; a current sensor, the current sensor being arranged on the wire to measure a current on the wire; and a power assembly, direct current ends of the power assembly being respectively connected to a positive electrode of the first battery pack and a negative electrode of the second battery pack, and an alternating current end of the power assembly being connected to the energy storage element.
Resumen de: WO2025241760A1
A winding apparatus. A controller (100) of the winding apparatus is configured to: determine a target winding speed of a winding device (130) and a swing speed of a swing rod device (120) on the basis of a first electronic cam relationship corresponding to the winding device (130), a second electronic cam relationship corresponding to the swing rod device (120), and a preset unwinding speed; control the swing rod device (120) to swing at the swing speed; and control the winding device (130) to wind at the target winding speed. The winding apparatus can avoid a situation where the requirements for the speed and acceleration of the winding device are overly high, thereby ensuring the normal operation of the winding apparatus at a relatively high unwinding speed, and improving the winding efficiency of the winding apparatus.
Resumen de: WO2025243705A1
A backup electric power supply device (1) comprises: an electric power storage unit (20); an electric power conversion unit (10); a voltage detection unit (30) that detects the voltage of the electric power storage unit (20); a control unit (50) that performs constant electric current control and constant voltage control of the electric power conversion unit (10); a target electric current setting unit (60) that switches a target electric current value for the constant electric current control; and an internal resistance detection unit (80) that detects the internal resistance of the electric power storage unit (20). When the electric power storage unit (20) is being charged by the constant electric current control of the electric power conversion unit (10), the target electric current setting unit (60) switches the target electric current value for the constant electric current control from a first electric current value to a second electric current value in a first measurement section, and switches the target electric current value from the second electric current value to the first electric current value in a second measurement section.
Resumen de: WO2025243578A1
A battery according to the present disclosure is provided with an electrode body which comprises: a current collector; an electrode active material layer that is disposed on a main surface of the current collector; an electrolyte layer that is disposed on the reverse side of the electrode active material layer from the current collector; and a counter electrode active material layer that is disposed on the reverse side of the electrolyte layer from the electrode active material layer. An end portion of the electrode body in a first direction, which is a direction from the center of the main surface of the current collector toward the outer edge, is provided with a protrusion region in which the current collector protrudes beyond the counter electrode active material layer in the first direction in a plan view with respect to the main surface of the current collector, and a chamfered shape is formed in the current collector at a corner portion of the protrusion region in the plan view.
Resumen de: WO2025243652A1
An inactivation method according to the present disclosure comprises an inactivation step for inactivating a nickel hydrogen battery by reacting, with a positive electrode and/or a negative electrode of the nickel hydrogen battery, an inactivation liquid having dissolved therein an anion including N and O and/or a cation including N and H.
Resumen de: WO2025242172A1
The present application relates to a liquid cooling assembly, a liquid cooling module, a battery pack case body, a battery pack and an electrical device. The liquid cooling assembly comprises a liquid cooling plate and a support member. The liquid cooling plate extends in a predetermined direction and is used for accommodating a cooling liquid. The support member is connected to the bottom of the liquid cooling plate and extends in the predetermined direction, wherein the cross-section of a structure formed by the support member and the liquid cooling plate is in an inverted T shape and the support member is used for supporting battery cells. In the present application, the support member used for supporting battery cells is disposed at the bottom of the liquid cooling plate, so as to form the liquid cooling assembly having an inverted T-shaped cross-section, achieving integration of battery cell supporting and cooling functions. The present application integrates support structures, such as plastic bases required for module assembly of cylindrical cells in the prior art, with the liquid cooling plate, thereby eliminating the need for the plastic bases, and reducing part types and assembling procedures, improving the production takt, and improving the assembling efficiency of battery pack assembly processes.
Resumen de: WO2025242121A1
The present application provides an electrolyte solution and a battery. The electrolyte solution comprises: an electrolyte sodium salt; and an organic solvent, the organic solvent being an isophthalate solvent and/or a terephthalate solvent, wherein the volume content of the organic solvent accounts for 50 vol% or above of the solvent in the electrolyte solution.
Resumen de: WO2025244184A1
The present invention relates to an all-solid-state battery and, more specifically, to an all-solid-state battery including: a cell stack including a plurality of stacked unit cells; and a spring pad provided on at least one of a lower part and an upper part of the cell stack. The spring pad includes a plate and a plurality of springs on the plate, each of the plurality of springs includes a first spring having a first diameter and a second spring having a second diameter smaller than the first diameter, and the second spring is positioned inside the first spring.
Resumen de: WO2025244312A1
A BMS PCB assembly and a battery control unit including same are disclosed. The BMS PCB assembly according to an aspect of the present invention may comprise: a first PCB conductibly connected to an external BDU assembly; a second PCB conductibly coupled to the first PCB; and an insulating member located between the first PCB and the second PCB, and coupled to each of the first PCB and the second PCB, wherein the first PCB, the insulating member, and the second PCB are sequentially stacked in a height direction.
Nº publicación: WO2025244255A1 27/11/2025
Solicitante:
LG ENERGY SOLUTION LTD [KR]
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Resumen de: WO2025244255A1
According to some embodiments, a battery management device comprises: an interface configured to obtain battery data of a battery; and a controller configured to calculate a first SOH value of the battery on the basis of the battery data, calculate a first SOH correction value for the first SOH value by using a regression equation for calculating a SOH correction value on the basis of error factors causing errors in the first SOH value, and calculate a second SOH value by applying the first SOH correction value to the first SOH value.
BOPI
Sede Electrónica
