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1603
results.
Updated on
09/11/2025 [07:15:00]
Results 550 to 575 of 1603
Absstract of: EP4645479A1
A secondary battery, comprising a cathode layer, an anode layer and an insulating layer, wherein the insulating layer is located between the cathode layer and the anode layer; the thickness of the cathode layer is 10 mm to 1000 mm, and the thickness of the anode layer is 5 mm to 1000 mm; and the cathode layer comprises a cathode current collector and a cathode material, the anode layer comprises an anode current collector and an anode material, each of the cathode current collector and the anode current collector is of a three-dimensional porous structure, the absolute value of the difference between the thickness of the cathode current collector and the thickness of the cathode layer is less than 5 mm, and the absolute value of the difference between the thickness of the anode current collector and the thickness of the anode layer is less than 2 mm.
Absstract of: EP4644324A1
The present invention relates to a yolk-shell-structured silicon-carbon composite, a preparation method therefor, and an anode active material comprising same. The yolk-shell-structured silicon-carbon composite according to an embodiment of the present invention can be prepared without using strong acids, and can have uniform voids formed using, as a sacrificial layer, an inorganic layer with uniform thickness so as to accommodate, when used as an anode active material , silicon volume expansion, and thus can suppress peeling off, caused thereby, of the outermost carbon thin film. As a result, deterioration in battery performance and lifespan can be suppressed.
Absstract of: EP4644323A1
The present invention relates to a silicon-polymer composite, a preparation method therefor, and an anode active material comprising same. In the silicon-polymer composite according to an embodiment of the present invention, the original shape of silicon particles is preserved because a polymer thin film has excellent thickness uniformity, and the polymer thin film has little impact on electrical conductivity and lithium-ion conductivity, and thus, when the silicon-polymer composite is used as an anode active material, the silicon-polymer composite acts as a stable solid electrolyte interphase layer between silicon and an electrolyte, while still maintaining the high specific power and high Coulombic efficiency of silicon which is the main anode active material. Accordingly, degradation in battery performance and battery lifespan may be suppressed.
Absstract of: EP4644322A1
The present invention relates to a silicon-carbon composite having a yolk-shell structure, a manufacturing method therefor, and a negative electrode active material comprising same. The silicon-carbon composite having a yolk-shell structure according to an embodiment of the present invention may be manufactured without an etching process using a strong acid and may have uniform voids formed therein by using a polymer layer having a uniform thickness as a sacrificial layer. Accordingly, the silicon-carbon composite, when used as a negative electrode active material, may accommodate the volume expansion of silicon and thus may suppress the phenomenon in which the outermost carbon thin film is peeled off. As a result, the degradation of battery performance and life span may be suppressed.
Absstract of: EP4645538A1
The present invention relates to a cathode cover plate, a battery cell, and an assembly method. The cathode cover plate includes a cover plate sheet and a cathode support. The cover plate sheet has a first surface and a second surface that are opposite to each other. The cathode support is detachably connected to the cover plate sheet. The cathode support has a third surface and a fourth surface that are opposite to each other. The third surface is attached to the second surface of the cover plate sheet. A clearance groove for accommodating a tab runs through a side of the cathode support. A step is formed on the third surface at a side corresponding to the clearance groove, and a clamping slot is formed between the step and the second surface. The battery cell includes the cathode cover plate, an electrode assembly, and a housing. According to the present invention, due to the presence of the clamping slot on the cathode cover plate, the cathode cover plate can be inserted onto the housing, so as to reduce the distance between a lead-out terminal of the tab and a welding position of the cover plate sheet, thereby reducing the length of the tab, improving the safety of the battery cell, reducing production costs, and facilitating the assembly of the cathode cover plate.
Absstract of: EP4645549A1
A battery and an electric apparatus are provided. The battery includes a battery cell, a first housing, and a second housing. The first housing includes a first sealing surface. The second housing includes a first surface and a second sealing surface, where the first surface is configured to support the battery cell, the first housing and the second housing jointly define a closed space for accommodating the battery cell, and the first sealing surface and the second sealing surface cooperatively form a first sealing interface for sealing the closed space. The first sealing interface intersects with the first surface. The technical solution can improve the energy density of the battery.
Absstract of: EP4645561A1
An embodiment of this application provides a battery cell and an electrical device, and relates to the field of battery technology. The battery cell includes a housing, an electrode post, and a pressure relief mechanism. The housing includes a bottom wall and a plurality of sidewalls disposed around the bottom wall. A first through-hole and a second through-hole are created on a first sidewall of the plurality of sidewalls. The electrode post is threaded through the first through-hole. A pressure relief mechanism covers the second through-hole. The pressure relief mechanism includes an adhesive film. The adhesive film is able to melt when a temperature of the battery cell reaches a threshold, so as to release pressure inside the housing through the second through-hole. The thermal sensitivity of the pressure relief mechanism is relatively high, thereby achieving relatively high reliability of pressure relief and improving safety of the battery cell. Both the second through-hole and the first through-hole in which the electrode post is mounted are located on the first sidewall, so that the pressure relief mechanism can reuse a space reserved for the electrode post. This saves the space of the electrical device equipped with the battery cell, makes the structure of the electrical device more compact, and reduces the manufacturing cost of the pressure relief mechanism.
Absstract of: EP4644172A1
A battery self-heating system, a control method therefor, and an electric vehicle, wherein the battery self-heating system comprises: a three-phase motor, a battery pack, a three-phase inverter, and a switch module. The method for controlling the battery self-heating system comprises: acquiring battery pack temperature information; when according to the battery pack temperature information it is determined that the battery pack requires self-heating, obtaining voltage information between a first end and a second end of the switch module; according to the voltage information between the first end and the second end of the switch module, controlling the switch module to achieve self-heating of the battery pack; when according to the battery pack temperature information it is determined that the battery pack does not require self-heating, obtaining electric current information between the first end and the second end of the switch module; and according to the electric current information between the first end and the second end of the switch module, controlling the switch module to prevent self-heating of the battery pack.
Absstract of: EP4644321A1
According to an embodiment of the present invention, the present invention can provide carbon-silicon composite particles, each comprising: a porous carbon support comprising a surface layer part and a core part; and silicon (Si), wherein the porous carbon support comprises mesopores having a diameter of 2-50 nm, and the ratio of the volume of the mesopores of the surface layer part to the volume of the total mesopores of the porous carbon support is 0.5-0.76.
Absstract of: EP4644320A1
The present invention can provide a method for manufacturing a porous carbon support, the method comprising the steps of: (1) subjecting a petroleum-based raw material to pyrolysis and polycondensation to form pitch; (2) solidifying and pelletizing the pitch to obtain solid pitch pellets; (3) stabilizing the solid pitch pellets without pulverization; and (4) carbonizing the stabilized pitch pellets to obtain a carbonized product.
Absstract of: EP4644319A1
The present invention relates to a method for producing a porous carbon support, comprising the steps of (1) synthesizing pitch by pyrolysis and condensation polymerization of a petroleum-based raw material, (2) solidifying the pitch to obtain a solid-phase pitch, and (3) producing a carbon support from the solid-phase pitch, wherein the pitch in step (1) satisfies the following relational formula 1. Relational formula 1 S/SP × 100 + MP ≤ 0.5 In relational formula 1, S is the mass ratio of saturated hydrocarbons derived from a saturates-aromatics-resins-asphaltenes (SARA) analysis of the synthesized pitch, SP is a softening point of the pitch, and MP is the volume ratio of anisotropic (mesophase) content in the synthesized pitch.
Absstract of: EP4645503A1
An electrolyte for a rechargeable lithium battery according to embodiments of the present disclosure includes: an additive including a sulfonate compound represented by a specific formula; an organic solvent; and a lithium salt. A rechargeable lithium battery including the electrolyte for a rechargeable lithium battery may have improved high-temperature characteristics and fast-charging performance.
Absstract of: EP4645442A1
Provided in the present disclosure is a film-coated silicon-based negative electrode active material, including a silicon-based material and a film coated on surfaces of the silicon-based material, in which the film includes a copolymer, and a structure of the copolymer contains 1,3-dioxolane groups and sulfonyl fluoride groups.
Absstract of: EP4645526A1
A battery pack is provided and includes: an outer housing (10), defining a receiving cavity (12); a battery group (20), received in the receiving cavity; at least one reinforcing layer (30), disposed at a discharging end of the battery group, wherein the at least one reinforcing layer defines a plurality of channel holes (32); and a fixation adhesive (40), filled in the receiving cavity, wherein the fixation adhesive wraps the reinforcing layer and the battery group.
Absstract of: EP4645441A1
Provided is a composite silicon-based negative electrode material, including a silicon-based material and a coating layer coated on a surface of the silicon-based material, in which the coating layer includes a copolymer, the copolymer contains phosphonic acid groups and cyano groups, and a molecular weight of the copolymer is 5,000-100,000 daltons.
Absstract of: EP4645551A1
A battery dehumidification structure and a battery pack are provided. The battery dehumidification structure includes a shell and a drying assembly (200). The shell is provided with a first mounting region (110) and a water vapor deposition region (120). The first mounting region is configured to mount a battery set. The water vapor deposition region is provided with a second mounting region. The drying assembly is arranged in the second mounting region, so as to remove water vapor from the battery set, so that the water vapor inside a battery box can be removed, thereby keeping the battery box in a certain dry state, extending the service life of the battery set, and reducing the risk of thermal runaway occurring in the battery set. In addition, the drying assembly can be replaced from the shell without disassembling the battery set, thereby simplifying the structure and improving the convenience of assembly.
Absstract of: EP4645447A1
Provided are a sodium battery positive electrode material and a preparation method therefor, a positive electrode sheet and a sodium battery. The positive electrode material comprises a core and a coating layer coating the surface of the core. The general molecular formula of the core comprises Na3V2-xMx(PO4)2F3, wherein M represents a doping element capable of replacing V, element M comprises at least one of Fe, Cr, Mn, Co, Ti, Ni, Cu, Zn, Mo, Nb, Zr, La and Ce, and 0≤x<0.2. The material for the coating layer comprises a carbon material, wherein the ID/IG value of a Raman spectrum of the carbon material is y, and 0.9≤y<1. ID/IG is the peak intensity ratio of peak D to peak G of the Raman spectrum of the carbon material, a Raman shift of peak D ranges from 1300 cm<-1>to 1360 cm<-1>, and a Raman shift of peak G ranges from 1580 cm<-1>to 1600 cm<-1>.
Absstract of: EP4645528A1
An energy storage cabinet, including a cabinet body, a battery assembly, an air cooling device, an upper air duct, a first air duct, and a second air duct. The upper air duct is arranged in an accommodating cavity and located on the upper portion of the cabinet body; the upper air duct is provided with an upper air duct inlet and an upper air duct outlet; the upper air duct inlet is in communication with an air outlet of the air cooling device; the first air duct and the second air duct are respectively located on two opposite sides of the battery assembly; the first air duct is provided with a first air duct inlet and a first air duct outlet; the second air duct is provided with a second air duct inlet and a second air duct outlet; the first air duct inlet and the second air duct inlet are respectively in communication with the upper air duct outlet; and the first air duct outlet and the second air duct outlet are respectively in communication with the battery assembly.
Absstract of: EP4644931A1
A method for calculating a state-of-health value of a battery, a storage medium, a server, and a vehicle. The method for calculating a state-of-health value of a battery includes: acquiring factory data of a battery as delivered from a factory, and acquiring a capacity value corresponding to a high voltage inflection point of a first charging V-Q curve of the battery as delivered from the factory; acquiring an open-circuit voltage value corresponding to an OCV-SOC curve corresponding to the battery in a voltage plateau region; acquiring charging data of the battery in an actual charging process after delivery from the factory; determining, according to the charging data, a corresponding plateau voltage value when the battery is in the voltage plateau region; and calculating a state-of-health value of the battery according to the factory data, the capacity value, the open-circuit voltage value, the charging data and/or the plateau voltage value.
Absstract of: EP4645472A1
An electrode includes: an electrode active material layer, the electrode active material layer including an electrode active material and a conductive agent, where the conductive agent includes carbon nanotube clusters, the carbon nanotube clusters being composed of a plurality of bundled carbon nanotube units, and a diameter of the carbon nanotube clusters is greater than 0.2 µm.
Absstract of: EP4645453A1
The present embodiments relate to a negative electrode active material, a method for manufacturing the same, a negative electrode comprising the same, and a lithium secondary battery comprising the same. The negative electrode active material includes a core portion comprising at least one coarse graphite particle having an average particle diameter (D50) ranging from 5 to 20 µm and at least one fine graphite particle having an average particle diameter (D50) of less than 5 µm, wherein the fine graphite particles account for from 5 wt% to 30 wt% based on the total weight of the coarse graphite particles and the fine graphite particles.
Absstract of: EP4644329A1
The present disclosure relates to a precursor of a positive electrode active material for a lithium secondary battery, a method for manufacturing a positive electrode active material using the same, and a lithium secondary battery including the positive electrode active material manufactured thereby. In one embodiment, the precursor of a positive electrode active material for a lithium secondary battery may have a full width at half maximum (FWHM) of a diffraction peak of the (200) plane measured by X-ray diffraction in a range from 0.28° to 1.30°.
Absstract of: EP4645452A1
Disclosed is a positive electrode active material for a lithium secondary battery, a method for manufacturing the same, and a lithium secondary battery comprising the same. The positive electrode active material includes: a core comprising a lithium metal oxide; coating particles located on the core; and a diffusion coating layer located on the core, wherein the lithium metal oxide is in the form of a single particle, the diffusion coating layer is in the form of a film, and a ratio of a major axis to a minor axis of the coating particles is greater than 2.
Absstract of: EP4645451A1
The present embodiments relate to a positive electrode active material for a lithium secondary battery and a lithium secondary battery comprising the same. A positive electrode active material for a lithium secondary battery according to one embodiment may include: a metal oxide composed of single particles; a first coating layer having a fiber shape and disposed on a surface of the metal oxide; and a second coating layer having a dot shape and disposed on the surface of the metal oxide.
Nº publicación: EP4645202A1 05/11/2025
Applicant:
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
Absstract of: EP4645202A1
A server according to one embodiment disclosed herein includes a communication unit configured to receive first data including first identification information and physical property information of a battery cell from a first device included in a first process in a process of manufacturing the battery cell, and receive second data including second identification information of the battery cell from a second device included in a second process which differs from the first process, and a controller configured to identify the first data corresponding to the second data based on the first identification information and the second identification information, and transmit the first data to the second device.
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