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1568
results.
Updated on
08/11/2025 [07:55:00]
Results 450 to 475 of 1568
Absstract of: EP4645467A1
The present invention discloses a metal-doped silicon-carbon composite material, a preparation method thereof, and use thereof. The metal-doped silicon-carbon composite material includes a core-shell structure including a core and a shell. The core includes metal and/or heteroatom-doped porous carbon and nanosilicon. The shell includes lithium-doped amorphous carbon. A weight percentage of the shell in the core-shell structure is not greater than 10 wt%. According to the present invention, silicon storage performance of a porous carbon material is improved, so that specific capacity performance of the silicon-carbon composite material is further improved. The metal-doped silicon-carbon composite material, as a negative electrode material of a lithium-ion battery, has excellent power performance and initial efficiency. In addition, the preparation method provided in the present application is simple and effective, economical and practical, and easily scalable for industrialization.
Absstract of: EP4645517A1
According to exemplary embodiments, provided is a method for providing a secondary battery. The method comprises: a step for applying an electrode slurry so that a plurality of holding part lanes are formed on a first electrode sheet unwound from a first electrode roll a step for inspecting the first electrode sheet to collect inspection data; a step for forming an NG mark on the first electrode sheet on the basis of the inspection data, and winding the first electrode sheet into a second electrode roll, wherein the NG mark indicates the horizontal position of a defect on the first electrode sheet.
Absstract of: EP4645520A1
The present invention relates to a secondary battery for an internal short-circuit test, and the secondary battery for the internal short-circuit test includes: an electrode assembly; and a pouch configured to accommodate the electrode assembly, wherein the electrode assembly includes: a main first electrode constituted by a main first current collector and a main first coating layer applied to a remaining surface except for a first non-coating surface that is partitioned on the main first current collector; a second electrode constituted by a second current collector and a second coating layer applied to a surface of the second current collector; a main separator disposed between the main first electrode and the second electrode and having a through-hole at a position corresponding to the first non-coating surface; an auxiliary separator detachably attached to the main separator to block or open the through-hole; and an auxiliary first electrode detachably attached to the first non-coating surface and configured to connect the first non-coating surface of the main first current collector to the second electrode so that internal short circuit between the first non-coating surface and the second electrode occurs through the opened through-hole when being detached.
Absstract of: EP4644929A1
A low-voltage battery cell sorting apparatus according to an embodiment disclosed herein includes a data obtaining unit configured to obtain processing data sets of battery cells included in each of a plurality of battery trays, a data pre-processing unit configured to generate derived variable data sets comprising at least two types of derived variables for each of the battery cells, by using the processing data sets, and standardize the derived variable data sets, and a sorting unit configured to sort, as a low-voltage battery cell, a battery cell having a standardized derived variable data set out of a designated range among the standardized derived variable data sets, by using an artificial intelligence model.
Absstract of: EP4645580A1
A power storage device (10) comprises: an electrode body (14) including a positive electrode (11) and a negative electrode (12); an outer can (20) that accommodates the electrode body (14) and is electrically connected to the negative electrode (12); a positive electrode cap (31) that blocks an opening formed on one axial side of the outer can (20) and that is electrically connected to the positive electrode (11); and a negative electrode cap (21) that is provided on one axial side of the outer can (20) and is electrically connected to the outer can (20), the negative electrode cap (21) having a safety device to which a convex portion (21C) is provided.
Absstract of: EP4645348A1
The present invention relates to a method for manufacturing a composite powder that is to be used in a source material for a sulfide solid electrolyte, said method including heating an aqueous solution of a lithium halide to a temperature that is greater than or equal to the boiling point in the presence of elemental sulfur, and removing the solvent, and said composite powder including the lithium halide and the elemental sulfur.
Absstract of: EP4645347A1
Provided is a method for producing a sulfide solid electrolyte complex, comprising: adding microparticles having a BET specific surface area of 5 m<sup>2</sup>/g or greater to a solution containing at least one type of sulfide solid electrolyte raw material, and dispersing the microparticles in the solution, to obtain a microparticle dispersion liquid; removing a solvent from the microparticle dispersion liquid to obtain a complex powder of the microparticles and the sulfide solid electrolyte raw material; and obtaining a sulfide solid electrolyte complex using the complex powder.
Absstract of: EP4645346A1
Provided is a method for producing a sulfide solid electrolyte composite, the method comprising: adding a metal compound into a solution, which contains at least one sulfide solid electrolyte raw material, and dispersing the metal compound or a compound derived from the metal compound to obtain a metal dispersion; removing a solvent from the metal dispersion to obtain a composite powder of the sulfide solid electrolyte raw material and the metal compound or a compound derived from the metal compound; and obtaining a sulfide solid electrolyte composite by using the composite powder.
Absstract of: EP4645515A1
In a cylindrical battery that is an example of an embodiment of the present invention, a negative electrode (12) has a non-facing portion (43) that is wound at a length of 0.6-0.9 laps at a winding-start side of an electrode body (14), and an exposed core portion (42). A negative electrode lead (21) is bonded to the exposed core portion (42) so that a winding-termination-side end portion of said lead is positioned in a range in which the angle from a positive electrode start end (11x) to the winding-start side relative to the winding center (Z) of the electrode body (14) is 60-180 degrees. The ratio (D2/D1) of a maximum value (D2) relative to a minimum value (D1) of the inter-core distance between the non-facing portion (43) and the exposed core portion (42) is 1.5 or greater in the non-facing portion (43) within a range over which the angle from a position that corresponds to the positive electrode start end (11x) to the winding-start side relative to the winding center (Z) of the electrode body (14).
Absstract of: EP4645427A1
Examples of the disclosure include a positive electrode, a rechargeable lithium battery including the positive electrode, and a positive electrode for a rechargeable lithium battery including a current collector, a first active material layer on the current collector. The first active material layer includes a first particle, a second particle, a first binder, and a first conductive material, and a second active material layer on the first active material layer. The second active material layer includes a third particle, a second binder, and a second conductive material. The first particle contains an olivine structured compound, the second particle contains a layered compound, the third particle contains an olivine structured compound, the first active material layer and the second active material layer have a cobalt (Co) content that is less than about 100 ppm, the first particle includes a plurality of first primary particles aggregated together.
Absstract of: EP4645426A1
A positive electrode active material for a rechargeable lithium battery, a positive electrode including the positive electrode active material, and a rechargeable lithium battery including the positive electrode are disclosed. For example, the positive electrode active material includes first particles including a compound of Chemical Formula 1 and second particles including a compound of Chemical Formula 2. The content (e.g., amount) of the first particles is greater than the content (e.g., amount) of the second particles, and the second particles are (e.g., be in) a single particle form.
Absstract of: EP4645567A1
Provided is a separator for a power storage device, the separator comprising a polyolefin microporous film that has a first principal surface and a second principal surface. The water contact angle of the first principal surface is 43°-118°, and when the absorbance of the first principal surface from 600 cm<sup>-1</sup> to 4000 cm<sup>-1</sup> is measured by ATR-IR measurement, the ratio of the absorption peak height at 1715 cm<sup>-1</sup> and the absorption peak height at 1472 cm<sup>-1</sup> is 0.0020-0.0280. The porosity of the polyolefin microporous film is 30%-65%.
Absstract of: EP4644593A1
A glass fiber composite material of the present invention comprises: about 100 parts by weight of glass fibers; about 35 to about 72 parts by weight of polypropylene resin; about 12 to about 35 parts by weight of piperazine pyrophosphate; about 1 to about 20 parts by weight of a phosphagen compound; and about 1 to about 20 parts by weight of zeolite. The glass fiber composite material is excellent in lightweight properties, flame retardancy, impact resistance, and rigidity.
Absstract of: EP4643686A1
The application provides an aerosol generation system and a heating control method thereof. The mothod comprises: detecting an initial temperature of a heating module; acquiring a first pre-stored parameter according to the initial temperature, and acquiring a second pre-stored parameter according to a preset heat preservation duration; acquiring a first temperature according to the first pre-stored parameter and a preset expected temperature; acquiring a second temperature according to the first temperature and the second pre-stored parameter; and controlling the heating module to work, and controlling the temperature of the heating module to gradually decrease when the temperature of the heating module reaches the first temperature, enabling the temperature of the heating module to reach the second temperature after the heat preservation duration. The hysteresis of temperature change can be overcome by controlling the heating module, allowing the temperature of air at the end of cigarette body to remain constant, increasing the taste when inhaled by the user.
Absstract of: EP4645578A1
An electrode assembly, a battery, and an electric device are provided. The electrode assembly includes a first electrode plate, a separator, and a second electrode plate disposed in sequence. The electrode assembly further includes a tab, a first insulating layer, and a second insulating layer. The first electrode plate includes a first current collector and first active material layers applied on two sides of the first current collector. The first active material layer is provided with a tab groove, and the tab groove is provided with a tab. At least one surface of the first active material layer is provided with a thinned region in communication with the tab groove. The thinned region includes a first depression apart from the tab groove in the first direction, and a second depression provided between the first depression and the tab groove. The first insulating layer is provided in the second depression. The second insulating layer is connected to a side of the second electrode plate facing the first depression, and a projection of the second insulating layer in the first direction is located in the first depression. The electrode assembly can improve energy density of the battery and reduce the risk of lithium precipitation.
Absstract of: EP4645507A1
A secondary battery, comprising a positive electrode layer, a negative electrode layer and an insulating layer. The insulating layer is located between the positive electrode layer and the negative electrode layer; the thickness of the positive electrode layer is 10 to 200 mm; the thickness of the negative electrode layer is 5 to 150 mm; the secondary battery meets the following condition: 20%≤a-(b/20) × 5%≤35%; the porosity of the insulating layer is a; and the thickness of the positive electrode layer is b mm. According to the secondary battery, the impedance of the secondary battery can be obviously reduced, and the capacity retention rate of the battery is increased in the long-term cycle process.
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: GB2640686A
A method of bonding a stack 200 of prismatic battery cells 1 to a cooling plate 2 within a vehicle battery module comprises dispensing a two-component adhesive composition onto a bonding face of the cell stack or the cooling plate as a continuous bead in a zigzag pattern. The bonding face on which the adhesive has been dispensed is compressed against the other bonding face until the adhesive composition forms a coalesced adhesive layer 6 with an average thickness of 0.5 to 3 mm, before curing takes place. The two-component adhesive has a viscosity between 220-290 Pa.s and a flow rate between 5.5-7.5 cm3/s. The compression step takes place at a velocity between 12-18 mm/min and a compressive stress between 0.011-0.114 MPa. The final adhesive layer has a tensile strength of at least 0.5 MPa at 25°C and is formed within 55-60 minutes of dispensing the two-component adhesive. A battery module comprising a stack of enclosed prismatic battery cells 1 adhered to a cooling plate 2 by a continuous thermally conductive adhesive layer, and an adhesive layer 6 for bonding a cell stack of a traction battery of an electric vehicle to a cooling plate are also disclosed.
Absstract of: EP4645566A1
A composition for a non-aqueous secondary battery functional layer has a surface tension S<30> at 30°C and a surface tension S<50> at 50°C that satisfy condition (1) (S<30> - S<50>) < 5 mN/m and condition (2) 30 mN/m ≤ S<30> ≤ 50 mN/m, and has a viscosity at 30°C of not less than 1 mPa·s and not more than 50 mPa·s.
Absstract of: EP4645635A1
A driver circuit for a BMS and method are disclosed, comprising a series arrangement of at least a cell and at least a busbar, and comprising: a first and second voltage rail having a respective first and second terminals for connection to ends of one of the busbar and the cell; a power supply voltage rail, configured to operate at a voltage which is higher than the second voltage rail; a determination circuit, for detecting a lower of supply, LOS, being the one of the first and second voltage rail which is at a lower voltage, and drawing a first bias current from the power supply draw to the LOS; further analog circuit blocks drawing a second bias current from the power supply rail to the LOS; and a current sink circuit arrangement drawing the sum of the first and second bias currents, from the LOS to a ground.
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: EP4645546A1
A battery device (100) and an elastic conductive element (34) thereof are provided. The elastic conductive element (34) includes a plate body portion (341), a plurality of bend portions (342), a plurality of connecting portions (343), and a plurality of end portions (344). The bend portions (342) extend from the plate body portion (341). The connecting portions (343) respectively extend from the bend portions (342). Each of the connecting portions (343) and the plate body portion (341) are spaced apart from each other, so as to have a first height change (H1). The end portions (344) respectively extend from the connecting portions (343), so as to elastically abut against a corresponding one of the electric cores through the connecting portions (343).
Nº publicación: EP4645543A1 05/11/2025
Applicant:
VOLVO TRUCK CORP [SE]
VOLVO TRUCK CORPORATION
Absstract of: EP4645543A1
The disclosure relates to a battery pack (1) comprising a plurality of electrochemical battery cells (2), the battery pack further comprising a bottom support member (3), a top cover (4), and a first end cover (5), wherein the first end cover (5) is releasably attached to the top cover (4) via a first outer end attachment interface (A1), wherein the first outer end attachment interface (A1) is formed by a first end cover attachment surface (51) of the first end cover (5) and a first top cover attachment surface (41) of the top cover (4) which face each other along a longitudinal direction (L). The disclosure also relates to a vehicle (100) and a method for manufacturing a battery pack (1).
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