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152
resultados
Última actualización
25/04/2025 [06:56:00]
Resultados 75 a 100 de 152
Resumen de: WO2025076675A1
A lithium-rich manganese-based positive electrode material, and a preparation method therefor and a use thereof. The surface of the lithium-rich manganese-based positive electrode material is coated with a manganese-containing first coating layer at a high temperature, so that the surface of the lithium-rich manganese-based positive electrode material is enriched with manganese, thereby regulating the distribution of two phases and making the distribution of matrix elements more uniform, and reducing the probability of phase transition during high-temperature coating in second sintering; and then elements such as Al, Zr, Sr, Ti, and Mg are applied for coating to form a second coating layer, thereby increasing the capacity and maintaining the structural stability, and prolonging the cycle life under large-rate conditions.
Resumen de: WO2025077847A1
A positive electrode sheet and a battery comprising same. The positive electrode sheet comprises a positive electrode current collector and a positive electrode paste located on one side surface or two side surfaces of the positive electrode current collector; the positive electrode paste comprises a lithium-rich manganese-based material and a conductive material; the conductive material comprises a carbon nanotube and a conductive agent; the ratio of the median particle diameter Dv50 of the lithium-rich manganese-based material to the diameter of the carbon nanotube is (233-2.6×104):1. The positive electrode sheet has good conductivity, a high capacity per gram, high cycle stability, a high battery energy density, and high rate performance.
Resumen de: WO2025077848A1
A sodium ion battery and an electric device. The sodium ion battery comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte. The electrolyte comprises an organic solvent, a sodium salt, an organic additive, and a low electrode potential metal salt additive. The standard electrode potential of a low electrode potential metal element in the low electrode potential metal salt additive is less than -2.714 V. The negative electrode sheet is mainly made of a negative active material. The content A of the low electrode potential metal element in the electrolyte, the liquid retention M of the sodium ion battery, and the specific surface area S of the negative electrode active material satisfy the following relational expression: (I). The low electrode potential metal element is introduced into the electrolyte, and parameters are controlled to satisfy the corresponding relational expressions, such that the sodium ion battery has good cycle stability, and has a good capacity retention rate and a low impedance growth rate in the use process, and the problems of sodium precipitation and production of a large amount of gas are less likely to occur.
Resumen de: WO2025077850A1
A positive electrode material and a preparation method therefor, and a battery. The general chemical formula of the positive electrode material is LinNi1-x-yMxMnyO2, wherein 0.9≤n≤1.2, 0
Resumen de: WO2025081083A1
Systems and methods for low temperature charging a battery, which may be performed alone or in combination with heating a battery. In some aspects, the low temperature charging method involves obtaining a susceptance response of a battery, and upon a change in the susceptance response of the battery, altering a charge signal to the battery. It is understood that changes in susceptance are correlated with phase changes of a battery electrolyte - e.g., as a battery warms from a low temperature where the electrolyte is partially or completely frozen (solid) to a higher temperature where it changes to a liquid state, there is a change in susceptance. As the electrolyte changes from solid to liquid as understood from a change in the susceptance response, the charge may be increased as the electrolyte thaws.
Resumen de: WO2025077015A1
A clamping assembly, a grabbing device, a battery production line, a clamping method, and a transfer method, relating to the technical field of battery production. Clamping jaws (21) each comprise a first clamping member (211) and a second clamping member (212), and the direction in which the first clamping member and the second clamping member are arranged opposite to each other is a first direction. First driving members (22) are used for driving the first clamping members to move in the first direction. Mounting bases (23) are arranged on the second clamping members, the second clamping members can move relative to the mounting bases in the first direction, and the mounting bases are each provided with a force application portion (231) spaced apart from the corresponding second clamping member. Elastic members (24) are respectively in contact with the second clamping members and the force application portions. Second driving members are used for driving the mounting bases to move in the first direction, so that the elastic members apply force to the second clamping members in the direction towards the first clamping members. By performing driving independently by the first driving members and the second driving members, and performing buffering by the elastic members, battery cells can be grabbed more smoothly while reducing the damage to the battery cells as much as possible.
Resumen de: WO2025076992A1
A battery testing tool, an application method of the battery testing tool, and a control method. The battery testing tool comprises: a holder (1), at least two sets of driving assemblies (2), and at least two abutting members (3), the driving assemblies (2) being mounted on the holder (1), and an abutting member (3) being disposed on each set of driving assemblies (2). Abutting faces of the abutting members (3) facing away from the holder (1) are used to abut against a battery to be tested (9). Each abutting member (3) can move in a direction away from or towards the holder (1), driven by the driving assemblies (2).
Resumen de: WO2025077003A1
A test system, a battery production line and a test method. The test system (1) comprises a control device (11) and a test device (12), wherein the test device (12) comprises at least two probe plate adjustment assemblies (2); the control device (11) is connected to the test device (12), and the control device (11) is used for adjusting the probe plate adjustment assemblies (2) on the basis of an adjustment strategy, and for driving the adjusted probe plate adjustment assemblies (2) to test a current battery module (9) to be tested; and the adjustment strategy is determined on the basis of current module information corresponding to said battery module (9) and historical module information, and the historical module information is module information of a previously tested battery module (9). The test system (1) can quickly adjust the probe plate adjustment assemblies (2), so as to adapt to different battery modules (9).
Resumen de: WO2025076673A1
The present application relates to the technical field of batteries, and discloses a high-nickel ternary precursor, and a preparation method therefor and a use thereof. The high-nickel ternary precursor prepared by the preparation method provided in the present application has the characteristics of large specific surface area, large pressure particle size and low sulfur content; and a battery prepared using the high-nickel ternary precursor has high capacity and excellent cycling stability. Moreover, the preparation method provided in the present application is simple and efficient to operate and beneficial to actual production.
Resumen de: WO2025076657A1
Electrodes for energy storage devices are disclosed that comprise a solventless electrode film. The solventless film comprises a porous network of an active material attached together by binder particles. The binder particles comprise a high density polyethylene polymer.
Resumen de: WO2025076682A1
The present disclosure belongs to the technical field of lithium batteries, and particularly relates to ferric phosphate, a lithium ferric phosphate positive electrode material, preparation methods therefor, and the use thereof. The present disclosure uses a ferrous iron source and copperas together as iron sources, and controls the dosages of the two components to enable copperas to serve as not only an iron source but also a dopant, so that impurity elements, such as Ti, Mn and Mg, contained in copperas are introduced into ferric phosphate as beneficial doping elements and are further introduced into the lithium ferric phosphate positive electrode material. During a reaction process, a polymer monomer is polymerized in situ onto the surface of ferric phosphate, so as to limit the particle size of the material, thereby obtaining precursor particles having more uniform particle size and appearance. Thus, uniform coating and doping means can remarkably improve the electrochemical properties of lithium ferric phosphate. In addition, the preparation method for ferric phosphate provided by the present disclosure achieves high-added-value resource utilization on copperas without the need of impurity removal, thereby achieving the effects of reducing the cost and improving the efficiency.
Resumen de: WO2025076648A1
A secondary battery and an electronic apparatus. The secondary battery comprises an electrode assembly. The electrode assembly is of a stacked layer structure, and the electrode assembly comprises a first electrode sheet, a separator and a second electrode sheet, which are sequentially stacked in a first direction. The first electrode sheet comprises a first outer electrode sheet which is located on one end of the electrode assembly in the first direction, and at least one first inner electrode sheet which is located on the inner side of the first outer electrode sheet. The separator comprises a first separator for bonding the first outer electrode sheet, and a second separator for bonding the first inner electrode sheet. The bonding strength between the first separator and the first outer electrode sheet is defined to be F1, and the bonding strength between the second separator and the first inner electrode sheet is defined to be F2, where F1>F2. A lithium precipitation risk can be reduced, and the reliability of a secondary battery is improved, and the service life of the secondary battery is prolonged.
Resumen de: WO2025077884A1
The present invention belongs to the technical field of batteries, and relates to a lithium-ion secondary battery, a positive electrode active material composition, a positive electrode sheet and a device. The lithium-ion secondary battery comprises a positive electrode active material composition. The positive electrode active material composition comprises three lithium nickel cobalt manganese oxides with different volume average particle sizes Dv50, and a ratio of volume average particle sizes Dv50 of the three lithium nickel cobalt manganese oxides is controlled to be (3-2.2):(2.1-1.5):1. By means of three-stage mixing, the compaction density of the positive electrode active material composition can be increased, and the energy density of the lithium-ion secondary battery is increased.
Resumen de: WO2025081147A1
Described herein are electrochemically active-material structures comprising silicon and one or more inert elements, such that these inert elements are chemically and/or atomically dispersed. Also described are negative battery electrodes and lithium-ion electrochemical cells comprising such electrochemically active-material structures as well as methods of fabricating such structures, electrodes, and lithium-ion electrochemical cells. Some examples of atomically-dispersed inert elements include, but are not limited to, hydrogen (H), carbon (C), nitrogen (N), and chlorine (Cl). Unlike silicon, inert elements do not interact with lithium at an operating voltage of the negative battery electrode and therefore do not contribute to the overall cell capacity. At the same time, these inert elements help to mitigate silicon swelling by operating as a mechanical buffer, support structure, and/or additional conductive pathways. Such electrochemically active-material structures can be formed by reacting (chemically or electrochemically) one or more precursors that include silicon and corresponding inert elements.
Resumen de: WO2025077762A1
Provided in the present application are a battery case and a battery pack. The battery case (100) comprises a case body (11), a first liquid-cooling plate (12), a second liquid-cooling plate (13), a liquid inlet (14) and a liquid outlet (15), wherein the case body (11) is internally configured to have an accommodating cavity (111) for accommodating a battery module (200), and the first liquid-cooling plate (12) and the second liquid-cooling plate (13) are located on two sides of the accommodating cavity (111) in a first direction; a plurality of first flow channels (121) are distributed in the first liquid-cooling plate (12), the length of each first flow channel (121) extending in a third direction; the first liquid-cooling plate (12) is provided with a plurality of first immersion holes (122) connecting the first flow channels (121) to the accommodating cavity (111); a plurality of second flow channels (131) are distributed in the second liquid-cooling plate (13), the length of each second flow channel (131) extending in the third direction; the second liquid-cooling plate (13) is provided with a plurality of second immersion holes (132) connecting the second flow channels (131) to the accommodating cavity (111); and the liquid inlet (14) and the liquid outlet (15) are in communication with the first flow channels (121) and the second flow channels (131), respectively. The battery case of the present application can increase the probability of each battery cell being in con
Resumen de: WO2025076954A1
An AGM separator plate, and a preparation method therefor and the use thereof The AGM separator plate comprises a glass fiber cotton, an acid-soaked and alkali-free cotton and X, wherein the acid-soaked and alkali-free cotton is an alkali-free cotton after acid soaking, and X is selected from chemical fibers and/or glass chopped filaments. The AGM separator plate has a good comprehensive performance, wherein the strength thereof can reach 1.66 KN/m, the elongation can reach 5.99%, the specific surface area can reach 19.5 ㎡/g, the capillary acid absorption height can reach 128 mm in 5 min, the compression ratio can reach 76.88%, and the dynamic wet resilience thereof can reach 67.21%.
Resumen de: WO2025076970A1
Embodiments of the present disclosure provide a battery module pre-stacking mechanism and a battery production line. The battery module pre-stacking mechanism comprises a workbench, a multi-row pre-stacking mechanism, and a single-row pre-stacking mechanism. The multi-row pre-stacking mechanism is used to pre-stack multi-row battery cells to form a multi-row battery module, and the single-row pre-stacking mechanism is used to pre-stack single-row battery cells to form a single-row battery module; the single-row pre-stacking mechanism and the multi-row pre-stacking mechanism are both disposed on the workbench. The battery module pre-stacking mechanism of the embodiments of the present disclosure can improve the efficiency of a battery production line.
Resumen de: WO2025076943A1
Disclosed are a compression mechanism, a compression device, a stock bin device and a battery production line. The compression mechanism comprises a base and a compression part. The base is provided with a positioning key. The compression part is provided with a positioning slot. The positioning key is matched with the positioning slot so as to position the compression part and the base. The positioning slot is provided with an insertion opening penetrating through the bottom wall of the compression part, and the positioning key is inserted into the positioning slot through the insertion opening.
Resumen de: WO2025077761A1
Disclosed in the present application are a data interaction method for a battery management system, and a battery management system. The method comprises: upon acquisition of battery status data of a plurality of battery packs under test, setting a fault threshold value to acquire a battery status type corresponding to each of said battery packs; and determining the battery status types: when the battery status type is a first-level fault, controlling a target slave control communication module to operate according to a generated slave control starting instruction, and when the battery status type is a second-level fault, awakening the target slave control communication module preferentially, and the target slave control communication module transmitting a generated master control starting instruction to a master control communication module, such that on the basis of the master control starting instruction, the master control communication module controls a master control module to start. When a battery management system is dormant, by means of determining different battery status types, the present application activates different chips corresponding to the battery management system, thus solving the problem that the battery status cannot be monitored when battery management systems are dormant.
Resumen de: WO2025077739A1
A sodium ion battery positive electrode material, a preparation method therefor, and a use thereof, relating to the technical field of sodium ion batteries. The sodium ion battery positive electrode material comprises a polyanionic iron-manganese-based inner core material and a fast ion conductor layer coating the outer surface of the polyanionic iron-manganese-based inner core material; the polyanionic iron-manganese-based inner core material comprises iron and manganese, and the iron and the manganese are non-uniformly distributed in the polyanionic iron-manganese-based inner core material; in the centre of the polyanionic iron-manganese-based inner core material, the manganese content is higher than the iron content; and in the surface layer of the polyanionic iron-manganese-based inner core material, the iron content is higher than the manganese content. The uneven component distribution of the iron and manganese in the inner core material of the positive electrode material can effectively relieve the risk of structural collapse caused by metal ion migration during cycling; the fast ion conductor coating layer reduces the side reactions caused by electrolyte corrosion; and the problems of low capacity, fast attenuation, and low energy density of traditional single-phase materials are effectively solved.
Resumen de: WO2025077678A1
Provided in the present invention is a low-impedance storage battery, which comprises: an accommodation case, which is internally provided with an accommodation space; a first energy storage module, which is used for accumulating or supplying electric energy and is provided in the accommodation case; and a second energy storage module, which is used for storing or supplying a short-time large current and is provided in the accommodation case, the first energy storage module and the second energy storage module being electrically connected to each other. The second energy storage module at least comprises a circuit board, the circuit board having a second positive electrode and a second negative electrode. One side of the accommodation case is provided with a first electrical connector and a second electrical connector. One end of the first electrical connector and one end of the second electrical connector pass out of the accommodation case, and the other end of the first electrical connector and the other end of the second electrical connector are located in the accommodation case. The second positive electrode and the second negative electrode on the circuit board of the second energy storage module are respectively fixed at one end of the first electrical connector and one end of the second electrical connector in the accommodation case.
Resumen de: WO2025077581A1
A positive electrode active material and a preparation method therefor, a positive electrode plate, a battery, and an electrical apparatus. The chemical formula of the positive electrode active material is NaxM(1-y)CayO2, M comprising a transition metal element, x being within the range 0.8 to 1.1, and 0.005≤y≤0.015. More than 95 wt% of elemental Ca is distributed in a surface layer of single crystal particles of the positive electrode active material, the thickness of the surface layer being 1 μm. A residual alkali content of the positive electrode active material is relatively low, and the air stability of the positive electrode active material is improved; thus, when the positive electrode active material is applied in a battery, the cycle performance thereof is improved.
Resumen de: WO2025077592A1
The present application discloses a battery pressure evaluation method, apparatus and system, and a storage medium. The battery pressure evaluation method comprises: dividing a battery housing into a preset number of bearing regions on the basis of a preset rule, establishing a battery simulation model having virtual bearing regions, and providing strain sensors in the bearing regions; constructing a stress matrix of a stress relationship of the battery housing on the basis of a load vector, a strain matrix and a mapping matrix; applying a preset pressure to the bearing regions in the battery simulation model, and solving the mapping matrix on the basis of first strain values extracted from the model; and changing an internal pressure of a battery, acquiring second strain values monitored by the strain sensors, solving the strain matrix on the basis of the second strain values and the mapping matrix, and obtaining the load vector on the basis of the mapping matrix and the strain matrix. The technical solution provided in the present application can solve the technical problems in the prior art of high cost and great operational difficulty when evaluating a battery pressure.
Resumen de: WO2025077650A1
A battery module (300), the battery module (300) comprising: two battery packs (200) arranged opposite to each other, posts of the battery pack (200) being on the side; and a CCS assembly (100), which is separately and electrically connected to the two battery packs (200), and is used for implementing electrical conduction between the two battery packs (200) and achieving temperature and pressure acquisition of each battery pack (200). The CCS assembly (100) is arranged in the circumferential direction of the two battery packs (200) and extends towards the stacking direction of battery cells (210) in the battery pack (200).
Nº publicación: WO2025081149A1 17/04/2025
Solicitante:
GRU ENERGY LAB INC [US]
GRU ENERGY LAB INC
Resumen de: WO2025081149A1
Described herein are electrochemically active-material structures comprising silicon and one or more inert elements, chemically and/or atomically dispersed in these electrochemically active-material structures. Also described are negative battery electrodes and lithium-ion electrochemical cells comprising such electrochemically active-material structures as well as methods of fabricating such structures, electrodes, and lithium-ion electrochemical cells. Some examples of atomically-dispersed inert elements include, but are not limited to, hydrogen (H), carbon (C), nitrogen (N), and chlorine (Cl). Unlike silicon, inert elements do not interact with lithium at an operating voltage of the negative battery electrode and therefore do not contribute to the overall cell capacity. At the same time, these inert elements help to mitigate silicon swelling by operating as a mechanical buffer, support structure, and/or additional conductive pathways. Such electrochemically active-material structures can be formed by reacting (chemically or electrochemically) one or more precursors that include silicon and corresponding inert elements.
BOPI
Sede Electrónica
