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1000
resultados
Última actualización
16/07/2026 [07:55:00]
Resultados 800 a 825 de 1000
Resumen de: EP4773206A1
A secondary battery and an electric device. The secondary battery comprises a negative electrode sheet and a positive electrode sheet. The negative electrode sheet comprises a negative electrode film layer, which comprises artificial graphite having a graphitization degree of greater than 93%. The positive electrode sheet comprises a positive electrode film layer, which comprises a positive electrode active material having a single-crystal-particle morphology. On the basis of the total number of moles of nickel, cobalt, and manganese in the chemical formula of the positive electrode active material being 1, the number of moles of nickel in the chemical formula of the positive electrode active material is a, a being 0.6 to 1. The areal density of the negative electrode film layer is σ1, and the areal density of the positive electrode film layer is σ2, where σ1/σ2 is 0.35 to 0.75. The secondary battery has a low expansion force, good cycling performance, and high energy density.
Resumen de: EP4773250A1
The present application discloses an electrode manufacturing method, a battery, and an electrical apparatus. The electrode manufacturing method comprises steps of: providing a slurry mixed with a pore-forming agent; coating the slurry on a current collector to form an active material layer on the current collector; and electrically energizing the active material layer to cause the pore-forming agent in the active material layer to undergo an electrochemical reaction to form pores. Before the step of coating the slurry on the current collector, the method further comprises a step of: providing a roller configured to coat and convey the current collector and provided with a conductive member on a surface of the roller, the conductive member being configured to electrically connect to the current collector. The step of electrically energizing the active material layer comprises electrically energizing the current collector through the conductive member. The technical solutions provided in the present application can improve the pore-forming efficiency of the electrode, thereby enabling, when the electrode is used in the battery, the battery to have relatively high manufacturing efficiency.
Resumen de: EP4772897A1
The present application relates to method and apparatus for determining a lithium plating potential of a battery cell, storage medium, and electronic device, wherein the method includes: obtaining a voltage and a capacity of the battery cell at different charging rates, and a voltage and a capacity of the battery cell at the same discharge rate; plotting a first relationship curve and a second relationship curve; plotting a charging capacity differential curve based on the first relationship curve, and plotting a discharge capacity differential curve based on the second relationship curve; and finally determining the lithium plating potential of the battery cell based on the two differential curves.
Resumen de: EP4773200A1
A secondary battery includes a negative electrode plate, where the negative electrode plate includes a current collector and a first active material layer, the first active material layer is disposed on at least one surface of the current collector, the first active material layer includes a silicon-based material and a solid-state electrolyte, and the solid-state electrolyte is at least partially bound to a surface of silicon in the silicon-based material. In the secondary battery and an electric device, the solid-state electrolyte is at least partially bound to the surface of silicon in the silicon-based material, mitigating the issue of silicon-based material swelling and enhancing the structural integrity and stability of the negative electrode plate. In addition, as compared to a silicon-based material coated with a binder in the prior art, the use of a solid-state electrolyte can improve the lithium intercalation capability of the silicon-based material and increase the ion conduction rate in the negative electrode plate, thus mitigating the issue of deteriorated kinetic performance of the secondary battery caused by coating a binder on the silicon-based material.
Resumen de: EP4773201A1
This application relates to the technical field of electrochemical apparatuses, and in particular, to a secondary battery and an electric device. The secondary battery includes a negative electrode plate, where the negative electrode plate includes a current collector, a first active material layer, and a second active material layer, the first active material layer is disposed on at least one surface of the current collector, the second active material layer is disposed on a side of the first active material layer facing away from the current collector, the first active material layer includes a silicon-based material and a first graphite material, the second active material layer includes a second graphite material and an inorganic material, and a ratio of a particle size Dv50 of the inorganic material to a particle size Dv50 of the second graphite material is less than 0.23. The secondary battery and the electric device can improve the problem of overpressure of the second active material layer, suppression by the second active material layer on swelling of the silicon-based material can be maintained, and structural integrity and structural stability of the negative electrode plate can be enhanced.
Resumen de: EP4772829A1
0001 Embodiments of the present application provide a distance measurement apparatus and method, and battery assembly equipment and method. The distance measurement apparatus includes an image capture device, a processor, and a calibration assembly, where the image capture device is configured to capture an image of a gap occurring during assembly of a battery, the processor is configured to process the image to obtain a width dimension of the gap along a first direction, and the calibration assembly is configured to cooperate with the processor to correct an image capture parameter of the image capture device, and configured to cause a difference between a measured value of the gap and an actual value of the gap to be less than a preset value, where the measured value of the gap is the width dimension of the gap along the first direction obtained after an image captured by the corrected image capture device is processed by the processor. The battery assembly equipment includes the distance measurement apparatus.
Resumen de: EP4773237A1
The present application relates to the field of lithium battery technologies, and in particular, to a lithium-supplementing additive, and a method for preparing the same, a positive electrode material, a positive electrode plate, and a battery. The lithium-supplementing additive includes a lithium-containing compound, and the lithium-containing compound is selected from the group consisting of compounds represented by the following chemical formula (I): aLiFeαMnβM1-α-βO2-γXγ·(1-a)Li2FeδMnεN1-δ-εO3-ηXη, where M and N are each independently selected from a group consisting of Zr, Co, Sr, Al, Ni, W, Ti, Cu, Mg, Zn, Ca, Ba, Sc, Ga, Y, La, In, Ce, Ge, Hf, Sn, Nb, Ta, V, and Sb, and X is fluorine (F); 0.4 ≤ a ≤ 0.9, 0 < α ≤ 1, 0 ≤ β ≤ 1, 0 < (α+β) ≤ 1, 0 ≤ γ ≤ 0.1, 0 < δ ≤ 1, 0 ≤ ε ≤ 1, 0 < (δ+ε) ≤ 1, and 0 ≤ η ≤ 0.1. The lithium-supplementing additive provided in the present application can achieve stable and uniform lithium supplementation and enhance cycling stability.
Resumen de: EP4773302A1
0001 A lithium secondary battery, a preparation method therefor, and an electrical apparatus are provided. The lithium secondary battery includes an electrolyte solution, the electrolyte solution including a first solvent, a first additive, and a second additive, and the first solvent including a carboxylic ester compound. A reduction potential of the carboxylic ester compound relative to Li<+>/Li is less than or equal to 1.4 V, a reduction potential of the first additive relative to Li<+>/Li is greater than or equal to 1.4 V, and a 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 the lithium secondary battery and comprehensively improving the performance of the lithium secondary battery.
Resumen de: EP4773228A1
A sodium-ion battery cell, a secondary battery, and an electric device. The sodium-ion battery cell comprises an electrode assembly and a casing, wherein the casing is cylindrical; an accommodating cavity is provided inside the casing; and the electrode assembly is located inside the accommodating cavity. The electrode assembly comprises a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode current collector and a negative electrode active layer located on at least one surface of the negative electrode current collector, the density of the negative electrode current collector being less than or equal to 5.0 g/cm3. The group margin of the sodium-ion battery cell satisfies: 0.95 ≤ group margin < 1, where the group margin is the ratio of the diameter of the electrode assembly to the diameter of the accommodating cavity. The sodium-ion battery cell uses the negative electrode current collector having a relatively low density, combined with a relatively large group margin, and uses a cylindrical structure, such that the battery cell can achieve a relatively high gravimetric energy density, a relatively high volumetric energy density and relatively good cycling performance, thus being conducive to prompting the development of miniaturization and weight reduction of the battery cell.
Resumen de: EP4773197A1
A positive electrode sheet and a preparation method therefor, a battery, and an electric device. The positive electrode sheet comprises: a positive electrode active material layer, the positive electrode active material layer comprising a positive electrode active material; and a capacity compensation layer, the capacity compensation layer being provided on at least one side of the positive electrode active material layer, and the capacity compensation layer comprising a capacity compensation agent and an additive. Therefore, the probability that the additive reacts with residual alkali is increased, the content of residual alkali on the surface of the capacity compensation agent is reduced, the capacity compensation effect is improved, and the cycle capacity retention rate of the battery is improved.
Resumen de: WO2025095899A1
The invention is a battery case (C) that can be easily and quickly adapted for vehicles with different designs, suitable for use in electric and hybrid vehicles, characterized in that it comprises a plurality of interconnected carrier elements (20) supporting at least five surfaces, a plurality of body panels (10) connected to the skeleton structure formed from said carrier elements (20), so as to ensure that at least two carrier elements (20) are interconnected and located in different positions relative to each other: a sliding recess (22) and a sliding protrusion (24) corresponding to each other on and below each carrier element (20) and allowing the two carrier elements (20) to slide on each other; a linear channel (27) extending longitudinally on the carrier element (20) and allowing said linear movement to take place; a connecting body (21) at one end of each carrier element (20), at least one pin opening (210) on said connecting body (21) for associating two carrier elements (20); a locking pin (30) having a pin body (32) passing through said pin opening (210) and linear channel (27) for interconnecting two consecutive carrier elements (20).
Resumen de: EP4773382A1
The present disclosure relates to a gas discharge film having excellent gas discharge performance and capable of being manufactured efficiently. A gas discharge film according to the present disclosure is configured to cover an opening formed in an exterior material of a secondary battery and discharge internal gas of the exterior material, and the gas discharge film may include an adhesive layer having adhesiveness by heat and having a through hole formed therein; and a permeable layer laminated to one surface of the adhesive layer to cover the through hole and having a higher gas permeability than the adhesive layer, wherein the permeable layer may have the same thickness as the adhesive layer or may be formed thicker than the adhesive layer.
Resumen de: EP4773298A1
0001 An electrolyte solution additive, an electrolyte solution, a battery, and an electrical apparatus. The electrolyte solution additive includes vinylene carbonate, methylene methanedisulfonate, and an alkynyl compound. The alkynyl compound comprises
wherein n is 0-10, and R comprises
or
Resumen de: EP4773461A1
The present application is applicable to the technical field of charging, and provides a charging method and apparatus, a charging management device, and a computer-readable storage medium. The method includes: acquiring a temperature of a battery to be charged; acquiring activation energy data of the battery to be charged; determining a charge cut-off voltage according to the temperature and the activation energy data; and charging the battery to be charged and controlling a maximum charging voltage of the battery to be charged to be less than or equal to the charge cut-off voltage. By using the method, an accuracy of the determined charge cut-off voltage can be improved, thereby enhancing the battery endurance and improving the user experience.
Resumen de: EP4772317A1
The present invention relates to a trimming device for making the width of an active material layer uniform in an electrode in which an electrode current collector is coated with the active material layer, and more specifically, to a trimming device which can be flexibly used by precisely adjusting a cutting depth and a cutting position. According to an embodiment of the present invention, it is possible to provide a trimming device for cutting the edges of an active material layer to make the width of the active material layer uniform in an electrode in which an electrode current collector is coated with the active material layer, the trimming device comprising: a guide roll for transporting the electrode; a cutting module including a knife for cutting the edges of the active material layer above the guide roll and the electrode in the direction in which the electrode is transported by the guide roll, and an adjustment member for adjusting the gap between the tip of the knife and the guide roll; and a horizontal frame which is disposed above the guide roll and to which the cutting module is mounted.
Resumen de: EP4773381A1
0001 A battery cell (100), a battery (1000) comprising same, and an electric device. The battery cell (100) comprises: a casing (10), the casing having an accommodating cavity (11), the accommodating cavity (11) having a first wall and a second wall which are oppositely arranged in a first direction, and an explosion-proof valve being provided on the first wall; and air guide plates (20), the air guide plates (20) being arranged in the accommodating cavity (11) and located between the first wall and the second wall, an air guide channel and vent holes (23) being formed in each air guide plate (20), the air guide channel extending in the first direction, and the air guide channel being communicated with the accommodating cavity (11) outside the air guide channel by means of the vent holes (23). According to the battery cell, a large discharge space is formed for gas generated in a cycle process of the battery cell, thereby reducing the probability of thermal runaway of the battery cell and reducing the risk of weld cracking of the casing caused by excessive pressure. In addition, a moving direction of the gas can be defined, and the gas generated in the cycle process of the battery cell is guided, so that the gas can be smoothly discharged, thereby improving the gas discharge effect.
Resumen de: EP4773271A1
0001 The present application applies to the field of batteries, and provides an electrode assembly, a battery cell, a battery, and a power consuming apparatus. An electrode assembly (100) includes a first electrode plate (10) and a separator (20). The separator (20) includes two separator layers (21) formed by folding, and the two separator layers (21) cover two opposite ends of the first electrode plate (10) in a thickness direction thereof, respectively. The separator layer (21) is provided with a first edge portion (211) extending beyond an end portion of the first electrode plate (10) in a width direction of the first electrode plate (10). The first edge portion (211) is opposite to a folded end of the separator (20). The first edge portions (211) of the two separator layers (21) are connected to each other and form a first joint portion (22). The electrode assembly provided in the embodiments of the present application can resolve the problem that a separator is folded over, and consequently a short circuit between adjacent electrode plates is caused.
Resumen de: EP4773226A1
0001 The present application provides a positive electrode material for a lithium secondary battery, a preparation method of the positive electrode material, a positive electrode plate, a secondary battery, a use method of a secondary battery, and a power consuming apparatus. The positive electrode material for a lithium secondary battery of the present application includes a matrix and a modifier disposed on a surface of the matrix. The matrix includes LiMn<1-s>P<1-z>C
Resumen de: EP4773395A1
The present application is applicable to the technical field of a battery (100), and provides a battery cell (10), the battery (100), an electrical apparatus, a combination apparatus (2100) and method, and a processing device (2000). The processing device (2000) is configured to process the battery (100), and includes the combination apparatus (2100). The combination method includes: driving the combination apparatus (2100) to combine and fix a part of a separator (113) to a first electrode plate (111) and/or a second electrode plate (112). The electrical apparatus includes the battery (100). The battery (100) includes the battery cell (10). The battery cell (10) includes an electrode assembly (11). The electrode assembly (11) includes the first electrode plate (111), the second electrode plate (112), and the separator (113). The first electrode plate (111) and the second electrode plate (112) are alternately stacked or are alternately stacked and wound. At least a part of the separator (113) is disposed between the first electrode plate (111) and the second electrode plate (112), and the part of the separator (113) is combined with and fixed to the first electrode plate (111) and/or the second electrode plate (112). In this way, only a part of the separator (113) is used for performing combination operation, and other parts of the separator (113) are not used for performing combination operation. In this way, a problem of poor overall air permeability of the separator (113)
Resumen de: EP4773240A1
0001 Provided are a positive electrode active material and a preparation method therefor, a secondary battery, and an electric device. The positive electrode active material includes a particle containing lithium nickel cobalt manganese oxide. In a range of a distance L extending from the surface of the particle to the interior of the particle along the radial direction of the particle, the mass concentration of Co gradually increases from the interior of the particle to the surface of the particle along the radial direction of the particle, where L= 1 µm.
Resumen de: EP4773225A1
0001 The present invention relates to a lithium metal battery having improved lifespan and stability, comprising: a positive electrode; a lithium metal negative electrode; a separator interposed between the positive electrode and the lithium metal negative electrode; and a non-aqueous electrolyte including an organic solvent, a lithium salt, and a compound represented by Chemical Formula I described herein.
Resumen de: EP4773384A1
0001 The present application relates to the technical field of batteries. Disclosed in the present application are a battery cell, a battery, and an electric device. The battery cell comprises a shell and a pressure relief notch, wherein the shell comprises a first wall; and the pressure relief notch is arranged in the first wall and comprises an arc section and a first extension section, the arc section having a first end, and the first extension section being connected to the first end and extending from the first end in the direction approaching the central axis of the arc section. In the battery cell according to the embodiments of the present application, the tearing range and tearing direction of a torn part on the shell can be controlled, and partial valve opening can be achieved after thermal runaway of the battery cell and tearing of the pressure relief notch, thereby reducing the probability of tearing over a large area of the shell and reducing the damage to the battery cell caused by uncontrollable cracks.
Resumen de: EP4773255A1
A composite current collector (3), an electrode plate, a secondary battery (1), and an electric apparatus (2) are provided. The composite current collector (3) includes a substrate layer (31), a first filler (32), a bonding layer (33), and a conductive layer (34). The bonding layer (33) is located between the substrate layer (31) and the conductive layer (34). One end of the first filler (32) is embedded in the substrate layer (31), the other end of the first filler (32) is embedded in the bonding layer (33), a hardness of the first filler (32) is greater than a hardness of the substrate layer (31), and the hardness of the first filler (32) is greater than a hardness of the bonding layer (33). In the composite current collector (3), by introducing the first filler (32) having a greater hardness than the substrate layer (31) and the bonding layer (33), and making one end of the first filler (32) embedded in the substrate layer (31) and the other end embedded in the bonding layer (33), the first filler (32) can serve as a point of force application between the substrate layer (31) and the bonding layer (33), which is conducive to improving the elastic modulus of the composite current collector (3) and reducing the risk of wrinkling during electrode plate processing.
Resumen de: EP4773214A1
0001 A positive electrode sheet and a preparation method therefor, a battery and an electric device. The positive electrode sheet comprises a positive current collector and a positive active layer arranged on at least one surface of the positive current collector, wherein the positive active layer comprises a first active layer and a second active layer, and the second active layer is located between the positive current collector and the first active layer; and the first active layer comprises a first positive active material, and the second active layer comprises a second positive active material, the operating voltage interval of the first positive active material being greater than the operating voltage interval of the second positive active material, and the operating voltage interval of the second positive active material being less than or equal to 3.0 V. The first positive active material starts to be attenuated after a relatively large voltage plateau, and the effect of continuing an operating voltage is achieved by means of the lower operating voltage interval of the second positive active material, thus expanding the voltage interval range of high-power discharge; in addition, the second positive active material still has reaction activity in a relatively low state of charge, and thus has a good discharge capacity.
Nº publicación: EP4773216A1 08/07/2026
Solicitante:
HITHIUM TECH HK LTD [HK]
Hithium Tech HK Limited
Resumen de: EP4773216A1
0001 The present disclosure provides a positive electrode, a battery, an energy-storage apparatus, and an electricity-consumption device. The positive electrode includes a positive current collector. The positive current collector is provided with a positive-electrode-material layer on at least one surface of the positive current collector. The positive-electrode-material layer includes a positive electrode material. The positive electrode material includes first particles and second particles. The second particles each are a secondary particle formed by fusing primary particles. Each second particle define gaps in a surface of the second particle, the second particle defines holes inside the second particle, and the holes are in communication with an outside through the gaps. An average sphericity of the second particles is S, and S satisfies S ≤ 0.6.
BOPI
Sede Electrónica
