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1143
resultados
Última actualización
04/09/2025 [07:15:00]
Resultados 75 a 100 de 1143
Resumen de: EP4611051A1
In the present invention, a negative electrode (12) for a secondary battery is characterized by comprising a negative electrode current collector (40) and a negative electrode mixture layer (42) provided on the negative electrode current collector (40), and is characterized in that: the negative electrode mixture layer (42) has a negative electrode active substance and a dicarboxylic acid component that includes a dicarboxylic acid and/or an anhydride thereof; and if the negative electrode mixture layer (42) is divided into two equal parts in the thickness direction to form a lower half region (42a) on the negative electrode current collector (40) side and an upper half region (42b) on the surface side, the content (C<sub>A</sub>) of the dicarboxylic acid component in the lower half region (42a) and the content (C<sub>B</sub>) of the dicarboxylic acid component in the upper half region (42b) satisfy the relationship C<sub>A</sub>>C<sub>B</sub>.
Resumen de: EP4611211A1
Provided is an electrically driven work machine capable of increasing estimation accuracy of a remaining charge time or a remaining discharge time of a secondary battery. An electrically driven excavator includes a secondary battery, a battery management unit, and a vehicle control unit. The vehicle control unit predicts a transition of a temperature of the secondary battery on the basis of the temperature and a state of charge of the secondary battery detected by the battery management unit, predicts a transition of a current of the secondary battery on the basis of the predicted transition of the temperature of the secondary battery, and estimates the remaining charge time or the remaining discharge time of the secondary battery on the basis of the predicted transition of the current of the secondary battery.
Resumen de: EP4611054A1
A negative electrode (12) according to an embodiment of the present invention comprises: a negative electrode core (40); and a negative electrode mixture layer (41) that is positioned on the negative electrode core (40), the negative electrode mixture layer (41) containing a negative electrode active material (50) and a water-soluble polymer (51). The water-soluble polymer (51) is present such that an amount of 0.50 mass% or more relative to the negative electrode active material (50) is adsorbed onto the negative electrode active material (50), and an amount of 1.05 mass% or less is separated from the negative electrode active material (50). The negative electrode active material (50) includes a carbon material and a silicon-containing material.
Resumen de: EP4611090A1
In a non-aqueous electrolyte secondary battery according to an embodiment, a positive electrode includes a lithium-containing transition metal composite oxide and a sulfonic acid compound present on the surface of particles of the composite oxide. The sulfonic acid compound is represented by formula (I). In the formula, A is a Group 1 or Group 2 element, R is a hydrocarbon group, and n is 1 or 2. A negative electrode includes a silicon-containing material (50). The silicon-containing material (50) contains an ion-conducting phase (51) and a Si phase (52) dispersed in the ion-conducting phase (50), and the size of the Si phase (52) is 110 nm or less.
Resumen de: EP4610309A1
Provided is a liquid dispersion of fluoride particles suitable for an optical material of an optical film such as an antireflection film, an electrode material of a secondary battery, and the like by satisfactorily dispersing fluoride particles even without using a dispersant containing a conventional surfactant. The liquid dispersion of fluoride particles according to the present invention is characterized by including an organic solvent, fluoride particles dispersed in the organic solvent, and polyvinylidene fluoride as a dispersant for dispersing the fluoride particles.
Resumen de: EP4611061A1
The present application provides a secondary battery (1). The secondary battery (1) comprises: a negative electrode sheet and an electrolyte, wherein the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network crosslinked pore structure; and the electrolyte comprises dimethyl carbonate. By means of the cooperation of the three-dimensional network crosslinked pore structure of the silicon-carbon composite material and dimethyl carbonate in the electrolyte, the volume effect of an active material during a charging and discharging process is inhibited, the interface stability is improved, the internal resistance of the battery is reduced, and the cycle capacity retention rate and the charging and discharging performance at a high rate of the battery are improved.
Resumen de: EP4611057A1
The present application discloses a lithium secondary battery and an electric device. The lithium secondary battery comprises a positive electrode sheet and a negative electrode sheet; a positive electrode active material layer comprises a positive electrode active material Li1+aM1bFe1-cAcP1-dEdO4 having a mass ratio of not less than 85 wt%; a negative electrode active material layer comprises graphite having a mass ratio of not less than 85 wt%; the surface density of the positive electrode active material layer located on a single side of the positive electrode sheet is CWc, with a unit of g/1540.25 mm2, and the reversible lithium capacity thereof is Dc, with a unit of mAh/1540.25 mm2; the reversible lithium capacity of the negative electrode active material layer on the side of the negative electrode sheet facing the positive electrode sheet is Da, with a unit of mAh/1540.25 mm2; the initial lithium-intercalation capacity of the negative electrode active material layer on the side of the negative electrode sheet facing away from the positive electrode sheet is Ca, with a unit of mAh/1540.25 mm2; the conductivity of an electrolyte in the lithium secondary battery at 25°C is ρ, with a unit of S/cm; the lithium secondary battery satisfies: Formula 1: 1.0337+0.37 × CWc - 7.79 × ρ ≤ K1 ≤ 1.07+0.93 × CWc - 2.9 × ρ ; and/or, Formula 2: 1.1485+0.43 × CWC - 9.2 × ρ = K2 ≤ 1.13+1.069×CWc - 1.7 × ρ ; wherein, (a).
Resumen de: EP4611115A1
The present invention relates to a method for manufacturing a lithium secondary battery, which includes a first step of preparing a battery case, a second step of disposing an electrode assembly in the battery case and injecting an electrolyte such that electrolyte mass per unit capacity is a (g/Ah) to assemble a battery cell, a third step of activating the battery cell, and a fourth step of precharging/discharging the activated battery cell b times, wherein Equation 1 below is satisfied, 15≤486.77−373.09×e−0.006b×a0.29≤30 wherein in Equation 1 above, a is an integer of 2.0 to 3.0 and b is an integer of 0 to 3.
Resumen de: EP4611077A1
Provided is a negative electrode-free battery which includes: a positive electrode; a negative electrode facing the positive electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes a lithium transition metal oxide, the negative electrode includes a negative electrode current collector for a negative electrode-free battery, the negative electrode current collector for a negative electrode-free battery includes a metal current collecting substrate, the metal current collecting substrate includes a space portion, at least a portion of which is exposed to the outside, and a specific relational formula is satisfied.
Resumen de: EP4611165A1
A battery disclosed includes a case, an electrode group, a sealing unit including a conductive cap, a terminal plate 60 joined to an opening edge of the case, and an insulating plate 70 that electrically insulates the conductive cap from the terminal plate 60. The case and the terminal plate 60 are electrically connected to a first electrode, while the conductive cap is electrically connected to a second electrode. The terminal plate 60 has a first connection region to which a first external terminal 101 is to be connected. The conductive cap has a second connection region to which a second external terminal is to be connected. The terminal plate 60 has a planned breaking part 64 between the first connection region and a joint part 63 thereof joined to the opening edge of the case. The planned breaking part 64 breaks when the internal pressure of the case exceeds a predetermined value, separating the terminal plate in the axial direction of the case into a broken piece 65 on the outer peripheral side and a broken piece 66 on the inner peripheral side. Thus, a battery having a current interruption function can be provided.
Resumen de: EP4611140A1
The present disclosure provides a battery pack that can reduce adverse effects on an adjacent secondary battery cell. A battery pack 100 includes a plurality of secondary battery cells 1, each of which has a gas discharge port 1a on an end face, a battery holder 20 that holds the plurality of secondary battery cells 1, one or more lead plates 30 that couple end faces of adjacent secondary battery cells 1 among the plurality of secondary battery cells 1, and a baffle plate 40 having a plurality of protrusions and depressions that generate a pressure difference in gas discharged from the secondary battery cells 1. The plurality of protrusions and depressions are provided between the end faces of the adjacent secondary battery cells 1 by being disposed on at least one of a face of the battery holder 20 opposite the lead plate 30 and a face of the lead plate 30 opposite the battery holder 20.
Resumen de: EP4610436A1
A hydraulic system (2) of a construction machine according to one embodiment includes: an electric motor (21) that is supplied with electric power from a battery (13); a hydraulic pump (33) that is driven by the electric motor (21); and a circulation pump (71) that circulates cooling water through a circulation passage (7) that extends through the battery (13) and a radiator (76). The hydraulic system (2) further includes: a heat exchanger (24) that is connected to the circulation passage (7) in parallel with the radiator (76); a first switching valve (52) that switches whether or not to supply hydraulic oil that has been delivered from the hydraulic pump (33) to the heat exchanger (24); and a second switching valve (74) that switches whether to supply the cooling water that has passed through the battery (13) to the radiator (76) or to the heat exchanger (24).
Resumen de: WO2024089708A1
The present disclosure provides a method and a vehicle to generate alarm signals for alarming a user relating a malfunctioning main battery (102). The present disclosure provides a BMS (104) which is configured to selectively enable flow of power from an auxiliary battery (106) or the main battery (102) to the at least one of the pluralities of vehicle component (118,120,122, 124). The BMS (104) selectively enables the flow of power based on riding condition of the vehicle and when one or more conditions associated with one or more parameters are satisfied. The flow of power to the at least one of the pluralities of vehicle component (118,120,122, 124) generates an alarm signal for the user, the surrounding vicinity of the vehicle, and other emergency contacts of the vehicle and the user.
Resumen de: EP4611067A1
The present invention relates to a lithium silicon oxide in which gas generation is suppressed when an aqueous slurry is applied, a negative electrode comprising same, and a lithium secondary battery comprising the negative electrode. In a <sup>29</sup>Si NMR spectrum obtained through <sup>29</sup>Si solid state magic angle spinning (MAS) NMR measuring, the lithium silicon oxide has, within a range of -88 to -99 ppm, a first peak having a width of 0.2 to 2.0 ppm and a second peak having a width of 3 to 10 ppm, wherein the ratio of the integral of the first peak to the integral of the second peak (first peak/second peak) is greater than 0.22 and less than or equal to 0.31.
Resumen de: EP4611101A1
The present application provides an electrolyte, a secondary battery and an electrical apparatus. The electrolyte contains a sodium salt and metal ions having ionic radii greater than that of a sodium ion. The electrolyte can effectively inhibit sodium dendrites, helping to improve the cycle performance and the high-temperature storage performance of batteries.
Resumen de: EP4611156A1
The present application provides a composite separator, a secondary battery, and an electrical apparatus. The composite separator comprises a separator substrate and a polymer coating located on one side of the separator substrate, the sodium ionic conductivity of the composite separator being 0.3 mS/cm-1 mS/cm. The polymer coating helps to reduce the contact between metal deposited on current collectors and electrolytes, thereby reducing side reactions between the metal and the electrolytes, and improving the cycle performance and the storage performance of batteries.
Resumen de: EP4611066A1
To provide a means capable of reducing direct current resistance in a secondary battery of lithium-deposit type having a negative electrode intermediate layer including metal particles. A secondary battery comprising: a power generation element having a positive electrode having a positive electrode active material layer containing a positive electrode active material capable of storing and releasing lithium ions disposed on a surface of a positive electrode current collector, a negative electrode having a negative electrode current collector and lithium metal deposited on the negative electrode current collector during charging, a solid electrolyte layer intervening between the positive electrode and the negative electrode and containing a solid electrolyte, and a negative electrode intermediate layer intervening between the negative electrode current collector and the solid electrolyte layer and containing metal particles made of at least one metal material; wherein a molar percentage of oxygen present on the surface of the metal particles, as determined by X-ray photoelectron spectroscopy, is more than 2 mol% and less than 88 mol% with respect to 100 mol% of total atoms, is provided.
Resumen de: EP4611074A1
Disclosed in the present invention are a three-dimensional netted structure composite material for lithium batteries, and a preparation method and the use thereof.The three-dimensional netted structure composite material comprises:a porous carbon microsphere containing netted structure through holes, silicon nanowires distributed in the through holes of the porous carbon microsphere, and a carbon shell. The silicon nanowires are formed by catalyzing, by means of Au or Ag,a silicon-containing gas and depositing same in the through holes; or the silicon nanowires are formed by depositing a silane gas in the through holes to form silicon oxide nanoparticles, then electrolyzing the silicon oxide nanoparticles in the through holes undder a molten salt system. The silicon nanowires form three- dimensional netted structures in through holes of the porous carbon microsphere. Applying the three- dimensional netted structure composite material as a negative electrode active material in a lithium battery can endow the lithium battery with a relatively low volume expansion rate, a relatively high mass specific capacity, and good conductive performance and cycling stability.
Resumen de: AU2023370540A1
Disclosed herein is a method for producing carbon-silicon composites. The method comprises providing a reaction mixture comprising a carbon-silica-based precursor and an aluminium reductant; heating the reaction mixture in the presence of solid or gaseous aluminium chloride, or a mixture thereof, to a temperature at which reactions that result in the silica being reduced are initiated; controlling reaction conditions whereby the reaction mixture is prevented from reaching a temperature at which thermal runaway can occur; and isolating the produced carbon- silicon composites.
Resumen de: EP4611125A1
Dargestellt und beschrieben ist ein Zellträger (2) für mindestens eine Zelle (3). Die mindestens eine Zelle (3) weist ein Zellgehäuse (4) auf. Der Zellträger (2) weist für die mindestens eine Zelle (3) eine Zellaufnahme (11) auf. Der Zellträger (2) ist aus einem Polyurethanschaum hergestellt, der ein Isocyanat und ein Polyol aufweist.Die Erfindung löst die Aufgabe, eine im Zellträger (2) angeordnete Zelle (3), welche thermisch durchgeht, thermisch und mechanisch ausreichend von ihrer Umgebung zu isolieren, sodass die Umgebung keinen Schaden nimmt.Die Aufgabe ist dadurch gelöst, dass der Polyurethanschaum ein Gemisch mit dem Isocyanat und einem ersten Teilgemisch ist, dass das erste Teilgemisch ein Gemisch mit dem Polyol und einem zweiten Teilgemisch ist und dass das zweite Teilgemisch ein Ammoniumsulfat aufweist.
Resumen de: EP4611142A1
A battery pack (10) includes a housing (100) and battery modules (30, 300) in the housing. Each of the battery modules includes battery cells, a case (310) accommodating the battery cells, a first fire prevention sheet (360) on the case, and a first spacer (370) on the case and configured to separate the first fire prevention sheet from an upper surface of the case.
Resumen de: EP4611064A1
Embodiments of this application relate to a positive electrode active material, a positive electrode plate, a secondary battery, and an electric device. The positive electrode active material includes a first active material and a second active material. The first active material includes a compound having a molecular formula of Li<sub>1+x</sub>Fe<sub>1-y</sub>A<sub>y</sub>P<sub>1-z</sub>Q<sub>z</sub>O<sub>4</sub> and a modified compound thereof. The second active material includes a compound having a molecular formula of Li<sub>h</sub>Ni<sub>j</sub>Co<sub>k</sub>M1<sub>d</sub>M2<sub>e</sub>O<sub>f</sub>R<sub>g</sub> and a modified compound thereof. The embodiments of this application can improve capacity utilization and cycle performance of a secondary battery.
Resumen de: EP4611130A1
This application discloses a battery cell, a battery, and a power-consuming apparatus. The battery cell includes a housing, a first insulating film, and an adhesive layer. The housing includes a first part and a second part, the first part is connected to the second part, and a surface energy of the second part is greater than a surface energy of the first part. The first insulating film covers at least one part of the housing. The adhesive layer is disposed between the second part and the first insulating film and configured to connect the first insulating film to the second part. Technical solutions provided in this application can improve reliability of the battery.
Resumen de: EP4611076A1
The present disclosure relates to a composition for forming an electrode protective layer for a lithium secondary battery, which not only suppresses heat generation or ignition caused by external impacts, etc., and thus has excellent stability, but also makes it possible to provide electrodes and batteries having excellent conductivity and rate characteristics, and to an electrode for a lithium secondary battery and a lithium secondary battery comprising the same.
Nº publicación: EP4611135A1 03/09/2025
Solicitante:
EVE POWER CO LTD [CN]
Eve Power Co., Ltd
Resumen de: EP4611135A1
Disclosed herein are a battery top cover, a process for assembling a battery top cover, and a power battery. The battery top cover comprises a cover assembly, a post and a pressing block. The post passes through the cover assembly and then is engaged with a mounting hole of the pressing block, a welding groove is formed on a surface of the pressing block, the welding groove is communicated with a peripheral side of the mounting hole, the post and the pressing block are fixed by welding, and the pressing block and the post respectively abut against opposite sides of the cover assembly. The present disclosure improves the assembly efficiency of the battery top cover and ensures the connection strength of the battery top cover.
BOPI
Sede Electrónica
