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1121
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Updated on
22/04/2026 [16:11:00]
Results 500 to 525 of 1121
Absstract of: EP4726837A1
The present invention relates to a novel electrolyte additive, a non-aqueous electrolyte for a lithium secondary battery comprising the novel electrolyte additive, and a lithium secondary battery comprising the non-aqueous electrolyte. More specifically, the present invention relates to a non-aqueous electrolyte for a lithium secondary battery comprising an additive capable of forming coordination bonds on the surface of the cathode. The present invention also relates to a lithium secondary battery having improved performance, wherein by including such a non-aqueous electrolyte, the high-temperature cycle life of the lithium secondary batteries is not degraded, gas generation is suppressed during high-temperature storage, the capacity retention and capacity recovery are improved, and the swelling (thickness expansion) of the battery during high-temperature storage is inhibited.
Absstract of: EP4726790A1
An apparatus for manufacturing a dry electrode powder according to an embodiment of the present disclosure comprises: a drying chamber in which a wet electrode slurry is dried and manufactured into a dry electrode powder; and a spray unit that sprays the electrode slurry into the inside of the drying chamber, wherein the inner wall surface of the drying chamber may include a plurality of protrusions.
Absstract of: WO2025087588A1
The invention relates to a method for producing a pre-product for a battery cell, to a method for producing a battery cell, to a method for producing a battery, and to a battery cell. In a method for producing a pre-product (1) for a battery cell (2), Li and Na are mechanically mixed with one another in the solid state. In this way, a three-dimensional lattice structure can be produced which allows particularly low impedance and thus particularly good electrical transfer.
Absstract of: EP4726968A1
According to various embodiments of the presnet disclosure, an electronic device may comprise: a first charging circuit; a second charging circuit; memory for storing instructions; and a processor. According to an emboidment, the instructions, when executed by the proecssor, may cause the electronic device to transmit a signal for detecting the proximity of a charging coil of an electronic pen through the first charging circuit and the second charging circuit. According to an embodiment, the instructions, when executed by the processor, may cause the electronic device to identify one charging circuit having detected the proximity of the charging coil of the electronic pen between the first charging circuit and the second charging circuit. According to an embodiment, the instructions, when executed by the processor, may cause the electronic device to wirelessly transmit power to the electronic pen through the identified one charging circuit. According to an embodiment, the instructions, when executed by the processor, may cause the electronic device to stop transmitting the signal of the other charging circuit of the first charging circuit and the second charging circuit while wirelessly transmitting the power to the electronic pen through the identified one charging circuit. In addition to various embodiments disclosed in the present document, various other embodiments may be possible.
Absstract of: GB2644581A
Circuitry for determining one or more characteristics of an electrochemical cell comprising a first working electrode and a counter electrode, the circuitry comprising: drive circuitry configured to apply a first stimulus to the first working electrode; measurement circuitry configured to measure a first response at the first working electrode; and processing circuitry configured to: applying compensation to the first response to obtain a first corrected response of the electrochemical cell to the first stimulus; and determine a first characteristic of the one or more characteristics of the electrochemical cell based on the first corrected response, the first characteristic associated with the first working electrode.
Absstract of: EP4725909A1
0001 Provided is a method for producing lithium-cobalt-based composite oxide particles capable of reducing the weight and thickness of a positive electrode material when used as a positive electrode active material for a non-aqueous lithium secondary battery or an all-solid-state battery. The method for producing lithium-cobalt-based composite oxide particles includes: a thermally decomposing step of thermally decomposing a raw material cobalt compound having an average particle diameter as determined by SEM observation of 0.05 to 1.00 µm to obtain an oxide of cobalt, the raw material cobalt being cobalt hydroxide or a salt of cobalt; a mixture preparing step of preparing a mixture containing at least a lithium compound and the oxide of cobalt obtained in the thermally decomposing step; and a firing step of firing the mixture prepared in the mixture preparing step at 500 to 850°C.
Absstract of: EP4725640A1
The present invention provides an electrode plate die-cutting method and an electrode plate die-cutting device. The electrode plate die-cutting method includes: conveying an electrode plate material strip in a first direction to a cutting area of an electrode plate die-cutting device; and adjusting, based on the electrode plate material strip, a position of each of a first laser cutting assembly and a second laser cutting assembly of the electrode plate die-cutting device to position a center point of a first laser galvanometer of the first laser cutting assembly above a predetermined electrode plate cutting line and to position a center point of a second laser galvanometer of the second laser cutting assembly above the tab cutting area.
Absstract of: WO2024251782A1
The invention relates to an interchangeable rechargeable battery pack (1) for a consumer, in particular for a power tool, comprising at least two rechargeable cells (2), at least one cell connector (4), and a first contact element (11) and a second contact element (12) for electrically connecting the interchangeable rechargeable battery pack (1), wherein each rechargeable cell (2) is electrically conductively connected to the at least one cell connector (4) by means of a connection (5), and wherein the rechargeable cells (2) and the at least one cell connector (4) and each connection (5) are configured such that a total AC internal resistance of the interchangeable rechargeable battery pack (1) between the first contact element (11) and the second contact element (12) is at most 40 milliohms.
Absstract of: EP4726905A1
A bus bar assembly, a battery module, and a battery pack are provided in the present disclosure. The bus bar assembly includes a positive bus bar, a negative bus bar, a series-connected bus bar, and a connecting bus bar. All of parts of the connecting bus bar, the series-connected bus bar, and the negative bus bar respectively connected to negative terminals of corresponding cells are defined as negative electrode parts. At least one partition slot is defined on a negative electrode part, and the at least one partition slot is defined to separate the negative electrode part into at least two separated parts in a second direction. Each of the at least two separated parts is connected to a negative terminal of a corresponding cell.
Absstract of: EP4726811A1
0001 Provided is a binder composition for an electrical storage device, which enables the production of an electrical storage device electrode excellent in input-output characteristic and excellent in charge-discharge durability characteristic under high temperature by reducing internal resistance. The binder composition for an electrical storage device includes a polymer (A) and a liquid medium (B). A value of a spin-spin relaxation time (T2) of the polymer (A) measured by pulsed NMR is 0.8 msec or less at 100°C. With respect to 100 mass% in total of repeating units contained in the polymer (A), the polymer (A) contains 4 mass% or more of at least one of a repeating unit (a1) derived from an unsaturated carboxylic acid having a value of "monomer molecular weight (g/mol)/number of carboxylic acid functional groups" of less than 85 and a repeating unit (a2) derived from an unsaturated carboxylic acid having a value of "monomer molecular weight (g/mol)/number of carboxylic acid functional groups" of 85 or more.
Absstract of: EP4726812A1
0001 Provided is a binder composition for an electrical storage device, which enables the production of an electrical storage device electrode that is reduced in internal resistance and is excellent in adhesiveness. The binder composition for an electrical storage device includes a polymer (A) and a liquid medium (B). A value of a spin-spin relaxation time (T2) of the polymer (A) measured by pulsed NMR is 0.8 msec or less at 100°C. With respect to 100 mass% in total of repeating units contained in the polymer (A), the polymer (A) contains 0 mass% or more and 4 mass% or less of a repeating unit (a1) derived from an unsaturated carboxylic acid.
Absstract of: EP4726910A1
0001 Provided are a novel lithium ion secondary battery enabling replenishment or replacement of an electrolyte and a lithium ion battery pack. 0002 Two openable and closable electrolyte circulation mechanisms (30U and 30B) for replenishing or replacing an electrolyte by circulating the electrolyte from the inside of a battery container (1 or 6) to the outside of the battery container or from the outside of the battery container to the inside of the battery container are provided. The circulation mechanism includes a fixing portion (32) that is fixed by welding to an outer surface or an inner surface of the battery container, a shaft portion (35) that is integrally formed with the fixing portion, has a flow path (36) that is inserted through the inside of the fixing portion and fluidly connected to an internal space of the battery container, and protrudes outward from the outside surface of the battery container, and a sealing body (39) detachably attached to the distal end side of the shaft portion so as to be capable of opening and closing an opening portion (35S) of the flow path.
Absstract of: MX2025014608A
There is described a lid assembly (1) for a prismatic battery cell comprising: a base plate (4); a current collector (55) electrically connectable to a respective electrode of the battery cell, for collecting electrical energy; a terminal (6) electrically coupled with the current collector (5) for receiving the electrical energy therefrom; and an insulator member (7) interposed between the terminal (6) and the base plate (4) for electrically insulating the terminal (6) from the base plate (4); the insulator member (7) has an inner portion (7b) and an outer skin (7a) surrounding the inner portion (7b) and defining an external surface thereof; at least one among the inner portion (7b) of the insulator member (7), the terminal (6) and the base plate (4) includes at least one protrusion (13) projecting therefrom for piercing the outer skin (7a), respectively from the inside or from the outside thereof.
Absstract of: EP4725911A1
A positive electrode active material includes: core particles including a lithium nickel-based composite oxide having a nickel content (e.g., amount) of at least about 80 mol% based on 100 mol% of a total metal excluding lithium in the lithium nickel-based composite oxide; and a coating layer disposed on a surface of each core particle and including aluminium, wherein the core particles are each in a form of a secondary particle in which a plurality of primary particles is agglomerated, an aluminium content (e.g., amount), based on total 100 at% of nickel, cobalt, and aluminium is about 10 at% to about 15 at% as measured by energy profiling energy dispersive spectroscopy (EP-EDS) on a surface of a positive electrode active material particle including the core particle and the coating layer.
Absstract of: EP4726343A1
The present invention discloses a temperature measurement module and a temperature acquisition device. The temperature measurement module comprises: a housing (1); and a temperature sensor (2) which is provided in the housing (1). The temperature sensor (2) has a pair of pins (21), which are used as mating terminals for mating with terminals (5) of an electrical connection module (200). In the present invention, the temperature measurement module and the electrical connection module are press fitted together in a detachable manner, allowing the temperature sensor in the temperature measurement module to be replaced separately, thereby reducing the maintenance cost of the temperature acquisition device.
Absstract of: EP4726873A1
0001 A cap assembly including a cap plate, a terminal plate joined to an opening in the cap plate, and an insulator between the cap plate and the terminal plate, wherein the terminal plate includes a current collector portion electrically connectable to an electrode assembly, and an electrode terminal portion continuously connected to the current collector portion in a longitudinal direction of the terminal plate.
Absstract of: EP4726792A1
0001 The present disclosure relates to a rolling apparatus for manufacturing an electrode and a method of operating the rolling apparatus. A mechanism for is provided for inputting a rolling gap between a first roller and a second roller for rolling an electrode, thereby minimizing a quality deviation of the electrode. To this end, the present disclosure provides a configuration for predicting a rolling gap value using a gap prediction model and performing control such that a rolling gap between a first roller and a second roller becomes the predicted rolling gap value.
Absstract of: EP4726880A1
0001 The present disclosure relates to a battery module, and the object to be solved is directed to providing a battery module capable of preventing heat propagation of a battery using an insulating cover. To this end, the present disclosure provides a battery module including one or more cell stacks formed by arranging a plurality of battery cells and having a first stack surface facing in a first direction and a second stack surface facing in a second direction and a module case in which the cell stacks are accommodated, wherein the battery cell includes an electrode assembly, a cell case having a first surface facing in the first direction and a second surface facing in the second direction, and an insulating cover coupled to the first surface and the second surface, and the second stack surface is insulated by a plurality of insulating covers provided on a plurality of battery cells.
Absstract of: EP4726803A1
0001 Disclosed are negative electrodes and rechargeable lithium batteries. The negative electrode includes a negative electrode current collector and a negative electrode active material layer thereon. The negative electrode active material layer includes a first graphite having a first average particle diameter and a second graphite having a second average particle diameter. The second average particle diameter is greater than the first average particle diameter. The negative electrode active material layer includes a first negative electrode active material layer on the negative electrode current collector, a second negative electrode active material layer on the first negative electrode active material layer, and an intermediate layer between the first and second negative electrode active material layers. The intermediate layer has a slope that is equal to or greater than about 2.33 in a normalized graph obtained by measuring a horizontal direction force that depends on a cutting depth.
Absstract of: EP4726799A1
An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The electrolyte includes a non-aqueous organic solvent, a lithium salt, and an additive, and the additive includes a mixture of a first additive represented by Chemical Formula 1 and a second additive represented by Chemical Formula 2.
Absstract of: EP4726800A1
0001 An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The electrolyte includes a non-aqueous organic solvent; a lithium salt; and an additive, and the additive includes a mixture of a first additive represented by Chemical Formula 1 and a second additive represented by Chemical Formula 2.
Absstract of: EP4726841A1
The present disclosure relates to a rechargeable battery and a battery pack including the rechargeable battery. The rechargeable battery includes a case having an open portion, an electrode assembly and an electrolyte accommodated in the case, and a cap-up in the open portion. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate. The separator includes a base and a coating layer located on at least one surface of the base. A sum of machine direction (MD) elongation rate and transverse direction (TD) elongation rate of the base is 200% or less. A sum of MD tensile strength and TD tensile strength of the base is 4,000 kgf/cm2 or less. The coating layer includes a binder, and the binder includes one or more of an aramid-based resin and an acrylic resin.
Absstract of: EP4726827A1
0001 A secondary battery includes: an electrode assembly including a first electrode including a first electrode tab, and a second electrode including a second electrode tab; a case including a three-dimensional shaped body having an accommodating space therein to accommodate the electrode assembly, and a flange extending in a horizontal direction from an open end of the body around the accommodating space; a cover on the case and joined to the flange to seal the accommodating space; and a first side plate joined to the body.
Absstract of: EP4726829A1
A rechargeable battery includes a case, an electrode assembly in the case, a plurality of protrusions on an inner surface of the case, and a resin between an outer surface of the electrode assembly and the plurality of protrusions, the resin having a melting point of 150 °C or higher.
Nº publicación: EP4725845A2 15/04/2026
Applicant:
PRATT & WHITNEY CANADA [CA]
Absstract of: EP4725845A2
A propulsion system (20) includes a battery (64), a plurality of temperature sensors (110), and a controller (92). The battery (64) includes a plurality of battery cells (112). The plurality of temperature sensors (110) includes a plurality of first temperature sensors (110A; 110C; 110E; 110F) and at least one second temperature sensor (110B). Each temperature sensor of the plurality of first temperature sensors (110A; 110C; 110E; 110F) is disposed at a respective battery cell of the plurality of battery cells (112). The at least one second temperature sensor (110B) is disposed at the plurality of battery cells (112). The controller (92) includes a first control channel (94) and a second control channel (96). The first control channel (94) is configured to monitor a T1 temperature of each battery cell of the plurality of battery cells (112) measured using the plurality of first temperature sensors (110A; 110C; 110E; 110F). The second control channel (96) is configured to monitor at least one T2 temperature of the plurality of battery cells (112) measured using the at least one second temperature sensor (110B).
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