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1559
resultados
Última actualización
16/06/2025 [07:23:00]
Resultados 50 a 75 de 1559
Resumen de: WO2025119676A1
The present invention provides a system comprising a magneto-electrochemical sub-system comprising one or more magnetic field sources, the/each magnetic field source being configured to generate a respective magnetic field through one or more electrochemical cells The system further comprises a thermal management sub-system for performing thermal management on the magneto-electrochemical sub-system, the thermal management sub-system comprising a thermal fluid in thermal communication with the one or more magnetic field sources and/or with the one or more electrochemical cells during use. There is further provided a system comprising a magneto-electrochemical sub-system comprising one or more magnetic field sources, the/each magnetic field source being configured to generate a respective magnetic field through one or more electrochemical cells, and an electric motor electrically coupled to the magneto-electrochemical sub-system. There is also provided a system comprising a magneto- electrochemical sub-system comprising one or more magnetic field sources, the/each magnetic field source being configured to generate a respective magnetic field through one or more electrochemical cells, and an electric motor magnetically coupled to the magneto-electrochemical sub-system via the one or more magnetic field guides. There is also provided an electric vehicle comprising the system.
Resumen de: WO2025119587A1
A motor vehicle has an electric drive motor (6), an input instrument (9) for inputting a performance requirement of the drive motor (6) by a driver, and a hybrid power supply system. The hybrid power supply system comprises a fuel cell arrangement (2), a battery (4), a power converter unit (3) for supplying a consumer (5), formed at least partially by the motor (6), with electrical energy from the fuel cell arrangement (2) or the battery (4) and for charging the battery (4) with electrical energy from the fuel cell arrangement (2) or regenerated electrical energy from the consumer (5), and a control unit (8), which is configured to control the performance of the fuel cell arrangement (2) and the distribution of electrical energy of the fuel cell arrangement (2) to the battery (4) and the consumer (5) by means of a deviation between actual and target state of charge of the battery (4). The control unit (8) is connected to the input instrument (9) and is configured to vary the target state of charge as a function of the performance requirement.
Resumen de: WO2025118564A1
A metal case (1), a battery (100), and a manufacturing method for the battery (100). A substrate (101) is folded along a first straight line (6) to respectively form a first case portion (102) and a second case portion (103); the first case portion (102) is in a flat plate shape; the second case portion (103) is provided with a first accommodation recess (2) and a second accommodation recess (3) which are spaced apart from each other; the first accommodation recess (2) and the second accommodation recess (3) are recessed inwardly toward the direction moving away from the first case portion (102); one side surface of the first case portion (102) is opposite to one side surface of the second case portion (103); the edge of the first case portion (102) is connected to the edge of the second case portion (103), such that the first accommodation recess (2) and the second accommodation recess (3) are closed by the first case portion (102); the first accommodation recess (2) is used for accommodating a cell (9); and the second accommodation recess (3) is used for gas discharge or liquid injection. During liquid injection and formation, an electrolyte is stored in the second accommodation recess (3) and enters the first accommodation recess (2) for wetting, the electrolyte is supplemented, and gas generated by formation enters the second accommodation recess (3) through the first accommodation recess (2), such that a complicated operation in the prior art of blocking a liquid injecti
Resumen de: WO2025118679A1
The present application relates to the technical field of batteries. Provided are a battery pack and a vehicle. The battery pack comprises: a housing assembly; a water-cooling plate assembly, which is arranged in the middle of the housing assembly in the direction of height of the housing assembly; and at least two battery modules, which are both located in a housing, wherein one of the at least two battery modules is located on a first side of the water-cooling plate assembly, and the other of the at least two battery modules is located on a second side of the water-cooling plate assembly, the first side being arranged opposite the second side; and the at least two battery modules each comprise a plurality of battery cells and a plurality of CCS assemblies, each CCS assembly located on a first side of a water-cooling plate and each CCS assembly located on a second side of the water-cooling plate being located on one side of a terminal post of each battery cell, and each CCS assembly being engaged with each battery cell. In this way, the single water-cooling plate assembly can realize large surface cooling, thus reducing the risk of liquid leakage and lowering costs.
Resumen de: WO2025118539A1
The present disclosure relates to the technical field of secondary batteries. Disclosed are a composite lithium-supplementing agent and a use thereof, a positive electrode material, a positive electrode sheet, a lithium battery, a battery module, and an electrical apparatus. A lithium-supplementing agent containing Ni2+ or Ni3+ is added on the basis of a lithium-rich-based transition metal oxide (such as lithium iron oxide LFO), the lithium-supplementing agent can have some of Ni3+/Ni4+ ions in a reaction system, and under an electrochemical action, the Ni3+/Ni4+ ions react with a small number of O2- ions subsequently generated by LFO, so as to produce NiO/NiO2 and other substances, thereby reducing the ring-opening reaction between O2- ions and an electrolyte, and further reducing gas production and being conducive to improving the cycle performance of a battery.
Resumen de: WO2025118673A1
A battery self-discharge testing method, system and apparatus. According to the method, during determination of a voltage drop of a battery, the battery is connected in parallel to an external resistor with specific resistance for a certain duration, and then self-discharge testing of the battery is completed on the basis of a voltage drop result after the parallel connection. Therefore, the effect of accelerating a battery discharge process by reducing the parallel connection resistance of a circuit, so as to shorten a battery voltage drop acquisition duration is achieved. Therefore, the problem in the related art of long battery self-discharge testing time caused by a battery needing to undergo long time standing to achieve the measurement of a reliable voltage drop when the battery has a large capacity or a testing instrument has a low precision standard is alleviated.
Resumen de: WO2025118670A1
A lithium secondary battery, a preparation method therefor, and an electrical apparatus. The lithium secondary battery comprises an electrolyte solution, the electrolyte solution comprising a first solvent, a first additive, and a second additive, and the first solvent comprising a carboxylic ester compound. The reduction potential of the carboxylic ester compound relative to Li+/Li is less than or equal to 1.4 V, the reduction potential of the first additive relative to Li+/Li is greater than or equal to 1.4 V, and the reduction potential of the second additive relative to Li+/Li is greater than or equal to 1.0 V and less than 1.4 V. According to the lithium secondary battery, the stability and compactness of an SEI film are improved by means of improving an electrolyte solution, thereby reducing the degree of gas production during cycling and storage of lithium secondary battery and comprehensively improving the performance of the lithium secondary battery.
Resumen de: WO2025118097A1
The present disclosure provides an iron(III) phosphate material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing 1,3,6,8-tetra(4-carboxyphenyl)pyrene with water, and adjusting the pH to induce reaction to obtain an organic framework solution; (2) mixing an iron salt with the organic framework solution, stirring to obtain a mixed solution, and mixing the mixed solution with a phosphoric acid source for reaction to obtain an iron(III) phosphate hydrate; and (3) aging the iron(III) phosphate hydrate, and performing sintering to obtain the iron(III) phosphate material. Flaky iron(III) phosphate is prepared in the present disclosure, and controllable morphology and in-situ carbon coating of lithium iron phosphate particles are achieved while improving the electronic conductivity and the ion migration capability of lithium iron phosphate.
Resumen de: WO2025118666A1
A graphite material, a preparation method therefor, a negative electrode piece containing graphite material, a battery, and an electrical apparatus. The graphite material satisfies (Lc100%SOC-Lc0%SOC)/Lc50%SOC≤0.0750, and Lc0%SOC is less than or equal to 50 nm. The graphite material enables the battery to have a long cycle life.
Resumen de: WO2025118487A1
A cover plate and a battery. The cover plate comprises a cover plate body (1) and an explosion-proof valve, the explosion-proof valve is arranged on the cover plate body (1), and the explosion-proof valve is formed of an explosion-proof notch (2) formed in the cover plate body (1); the tensile strength of the cover plate body (1) is c, the yield strength of the cover plate body (1) is d, the burst pressure of the explosion-proof valve is e, and the proportion of the area of the explosion-proof valve to the surface area of the cover plate body (1) is f, wherein the following relational expressions are satisfied: (I) and (II). The strength of the cover plate is represented by the tensile strength c and the yield strength d, the safety performance of the cover plate is represented by the burst pressure e of the explosion-proof valve and the proportion f of the area of the explosion-proof valve to the surface area of the cover plate body (1), and the ratio of the strength performance to the safety performance is controlled, so that when thermal runaway occurs in a battery, it is ensured that the cover plate cannot break and the explosion-proof valve can be opened in time.
Resumen de: WO2025118492A1
The present application relates to the technical field of charging, and discloses a battery charging method and apparatus, a device, and a storage medium. The method comprises: acquiring a current state of charge (SOC) and current state parameters of a target battery, wherein the current state parameters comprise a current charging power, a current charging rate and/or a current temperature rise rate; on the basis of the current SOC, determining state intervals corresponding to the target battery, wherein the state intervals comprise a charging power interval, a charging rate interval and/or a temperature rise rate interval; if each parameter among the current state parameters falls within the corresponding interval among the state intervals, adjusting the charging power of the target battery on the basis of the current SOC and the current charging rate; and if any parameter among the current state parameters does not fall within the corresponding interval among the state intervals, stopping charging and sending alarm information. According to the present application, by means of a mode of combining dynamic charging and fault monitoring, the accuracy of fault monitoring is improved, and the charging efficiency of the target battery is improved.
Resumen de: WO2025118495A1
An electrode sheet coating deviation correction method and system. The method comprises: acquiring coating images obtained by means of performing collection on two opposite coating surfaces of an electrode sheet; using the coating images to determine coating misalignment information, wherein the coating misalignment information represents misalignment states of coating areas on the coating surfaces, the coating misalignment information comprises first misalignment information, and the first misalignment information represents the state of misalignment between a coating area on a coating surface and a standard coating position in the coating surface; and on the basis of the coating misalignment information, performing deviation correction on at least two of coating mechanisms for the two coating surfaces and the electrode sheet, such that, after deviation correction, the coating areas on the two coating surfaces are aligned and are both located at standard coating positions in the coating surfaces.
Resumen de: WO2025118593A1
A carbon-based negative electrode active material, a preparation method, a secondary battery and an electric device. The gram volume of the carbon-based negative electrode active material is 345-355 mAh/g, and the powder compaction density under the pressure of 20,000 N is greater than 1.55 g/cm3 and less than 1.65 g/cm3. The secondary battery prepared from the carbon-based negative electrode active material has both good cycle performance and high energy density.
Resumen de: WO2025118490A1
Disclosed in the present application are an electrode sheet marking system and method. The electrode sheet marking system comprises an image acquisition apparatus and a processing apparatus, wherein the image acquisition apparatus is used for acquiring an electrode sheet roll in an unwinding process, so as to obtain a current image frame; the processing apparatus is in communication connection with the image acquisition apparatus, and is used for performing detection on the current image frame, and determining, when it is detected that there is a positioning mark in the current image frame, a marking moment for a target electrode sheet on the basis of an acquisition moment for a reference image frame corresponding to the current image frame; the target electrode sheet is an electrode sheet which can be distinguished by means of the detected positioning mark; and the marking moment is a moment at which a marking apparatus is triggered to mark the target electrode sheet. The above solution can realize the marking of an electrode sheet roll that has been provided with a positioning mark.
Resumen de: WO2025118488A1
The present application relates to the technical field of batteries. Disclosed are a battery and a battery pack. The battery comprises a housing, a pressure relief mechanism and an electrode assembly, wherein the pressure relief mechanism is disposed on the housing, the theoretical design value of the area of an opening region of the pressure relief mechanism is S1, and the actual value of the area of the opening region of the pressure relief mechanism is Svalve; and/or, the electrode assembly is disposed in the housing, and the electrode assembly and the inner wall of the housing are spaced apart from each other to form a pressure relief channel, the theoretical design value of the equivalent sectional area of the pressure relief channel being S2, and the actual value of the equivalent sectional area of the pressure relief channel being Ssection; when the Svalve is determined, the number of pressure relief mechanisms is n1, and then n1=S1/Svalve; and/or, when Ssection is determined, the number of pressure relief mechanisms is n2, and then n2=S2/Ssection. The present application rationalizes the arrangement of pressure relief mechanisms on a housing, which ensures that a hot gas can be smoothly discharged from the pressure relief mechanisms when a battery undergoes thermal runaway, thereby suppressing the burst of the housing, and thus improving the safety performance of the battery.
Resumen de: WO2025118580A1
The present disclosure provides a secondary battery and an electric apparatus. The secondary battery comprises a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer formed on at least one surface of the negative electrode current collector. The negative electrode film layer has a first surface away from the negative electrode current collector and a second surface arranged opposite to the first surface. The thickness of the negative electrode film layer is denoted as H, the region from the second surface of the negative electrode film layer to the thickness range of 0.3 H is denoted as a first region of the negative electrode film layer, and the region from the first surface of the negative electrode film layer to the thickness range of 0.3 H is denoted as a second region of the negative electrode film layer. ID/IG of an active material in the second region is greater than ID/IG of an active material in the first region. ID/IG is the ratio of the D peak intensity and the G peak intensity obtained by Raman mapping. ID represents the D peak intensity of a Raman spectrum at 1350±100 cm-1, and IG represents the G peak intensity of the Raman spectrum at 1580±100 cm-1.
Resumen de: WO2025118579A1
Provided in the present disclosure are a secondary battery and an electric apparatus containing same. The secondary battery comprises a negative electrode sheet, wherein the negative electrode sheet comprises a negative current collector and a negative film layer, which is arranged on at least one surface of the current collector and comprises a negative active material and a conductive agent, the powder conductivity σ of the negative active material is greater than or equal to 80 S/cm but less than or equal to 106 S/cm, and the compaction density of the negative film layer is 1.35 g/cm3 to 1.50 g/cm3. The negative electrode sheet is conducive to alleviating a black-spot phenomenon of a secondary battery and improving the cycle performance and dynamic performance of the secondary battery.
Resumen de: WO2025118578A1
The present invention provides a negative electrode sheet, a secondary battery, and an electric device comprising same. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer formed on at least one surface of the negative electrode current collector; the negative electrode film layer has a first surface distant from the negative electrode current collector and a second surface opposite to the first surface; the thickness of the negative electrode film layer is denoted as H; a region within the thickness range from the first surface to 0.3H of the negative electrode film layer is denoted as a first region of the negative electrode film layer; a region within the thickness range from the second surface to 0.3H of the negative electrode film layer is denoted as a second region of the negative electrode film layer; and the content of a binder of the first region is less than the content of a binder of the second region. The secondary battery prepared from the negative electrode sheet has good cycle performance and dynamic performance.
Resumen de: WO2025118438A1
Disclosed in the present application are a multi-sealing composite case body structure, comprising: a case body frame, which comprises an edge beam profile; a bottom protective plate layer, which is assembled and connected to the case body frame, the face of the case body frame assembled to the bottom protective plate layer being an assembly face; a liquid cooling plate layer, which is located between the case body frame and the bottom protective plate layer; a buffer layer, which is sandwiched between the bottom protective plate layer and the liquid cooling plate layer; at least two first edge sealing layers, which are connected between the case body frame and the edge of the liquid cooling plate layer in a sealing manner; and at least one second edge sealing layer, which is connected between the edge of the liquid cooling plate layer and the edge of the bottom protective plate layer in a sealing manner.
Resumen de: WO2025118592A1
Provided in the present disclosure are a secondary battery and an electric device. The secondary battery comprises: a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer formed on at least one surface of the negative electrode current collector; the negative electrode film layer has a first surface away from the negative electrode current collector and a second surface arranged opposite the first surface; the thickness of the negative electrode film layer is denoted as H; a region within a thickness range from the second surface of the negative electrode film layer to 0.3H is denoted as a first region of the negative electrode film layer; a region within a thickness range from the first surface of the negative electrode film layer to 0.3H is denoted as a second region of the negative electrode film layer; the first region comprises a first binder, the first binder being a linear binder; and the second region comprises a second binder, the second binder being a dot-like binder. The secondary battery can reduce the cold-press rebound rate and cyclic expansion rate of an electrode sheet, thereby improving the cycling stability of the battery.
Resumen de: WO2025118601A1
A graphite negative electrode active material and a preparation method therefor, a secondary battery, and an electric device. The degree of graphitization of the graphite negative electrode active material is 88%-93%, and the oil absorption value of the graphite negative electrode active material does not exceed 50 ml/100 g. The graphite negative electrode active material can improve the cycling performance of the battery and prolong the service life of the battery.
Resumen de: WO2025118577A1
An apparatus and a method for manufacturing an electrode plate of a battery cell. The apparatus comprises: a tab die-cutting unit; a first visual detection unit for a first surface side of the electrode plate; an electrode plate cutting unit; a second visual detection unit for a second surface side of the electrode plate opposite to the first surface side; a first deviation rectification unit located upstream of the electrode plate cutting unit; and a second deviation rectification unit located downstream of the electrode plate cutting unit.
Resumen de: WO2025118435A1
The present application provides a battery and an electric device. The battery comprises a case body and battery cells; vent holes passing through the case body in the thickness direction of the case body are formed on the case body, and the battery cells are accommodated in the case body. Each battery cell comprises a casing, and a first pressure relief mechanism and two electrodes arranged on the casing, the first pressure relief mechanism is communicated with the vent holes and the interior of the casing in an open state, and at least one of the two electrodes and the first pressure relief mechanism are arranged on the same side of the casing. The vent holes pass through the case body in the thickness direction of the case body, the first pressure relief mechanism is communicated with the vent holes and the interior of the casing in the open state, gas discharged from the first pressure relief mechanism is discharged out of the case body through the vent holes, and the gas is cooled and depressurized by means of the outside space of the case body, so that the risk of gas detonation inside the case body is reduced or eliminated, improving the safety performance of the battery.
Resumen de: US2025189596A1
Discussed is a battery system diagnosing apparatus including at least one sensor, and a processor configured to obtain data including at least one of voltage or current of a battery cell from the at least one sensor, calculate a state of health (SOH) for the battery cell multiple times over a period of time by using the voltage or current of the battery cell, and compare the SOH of the battery cell with a threshold value to determine whether a defect occurs in the battery cell.
Nº publicación: WO2025118978A1 12/06/2025
Solicitante:
HUAWEI DIGITAL POWER TECH CO LTD [CN]
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Resumen de: WO2025118978A1
A battery module (600), a battery pack (1), and an energy storage system. The battery module (600) comprises a first protection unit (610), a first battery cell and a second battery cell; the first protection unit (610) comprises a first breaking device (613), a first detection unit (612) and a first controller (611); the first battery cell and the second battery cell are connected in series. The first breaking device (613) is connected in series between the first battery cell and the second battery cell. The first detection unit (612) is used for detecting first state information, the first state information being used for indicating the state of the battery module (600). When the first state information indicates that the battery module (600) is abnormal, the first controller (611) is used for controlling the first breaking device (613) to be cut off.
BOPI
Sede Electrónica
