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1601
resultados
Última actualización
20/03/2026 [07:15:00]
Resultados 1575 a 1600 de 1601
Resumen de: WO2026049340A1
A wire-type tri-electrode secondary battery according to some embodiments may comprise: a support in the form of a hollow cylinder provided with a plurality of holes on the surface; a reference electrode inserted into the support; and an electrode assembly wound around the support. Accordingly, some embodiments allow measurements of the tri-electrodes to be taken stably even in the presence of physical movement.
Resumen de: WO2026049386A1
The present invention relates to a solid polymer electrolyte, and an all-solid-state battery comprising same, the solid polymer electrolyte comprising: a lithium salt; a heterophasic matrix comprising a plurality of crystalline particles three-dimensionally connected and dispersed in a rubbery matrix; and inorganic oxide particles, wherein the solid polymer electrolyte has a tensile strain of at least 600% and a toughness of at least 1.5 MJ/㎥.
Resumen de: WO2026049387A1
According to embodiments, secondary battery manufacturing equipment is provided. The equipment comprises: a die coater configured to apply an electrode slurry on a current collector sheet so that an electrode slurry lane is formed on the current collector sheet; and a magnetic module configured to apply a magnetic field to an electrode sheet including the current collector sheet and the electrode slurry lane, wherein the magnetic field has a non-uniform intensity in the transverse direction of the electrode sheet.
Resumen de: WO2026049380A1
A cathode active material precursor for a lithium secondary battery, according to the present invention, comprises a transition metal precursor including nickel and manganese but excluding cobalt, wherein the transition metal precursor includes secondary particles in which primary particles are aggregated, and includes pores having a bimodal distribution in which two peaks appear at pore diameters in a range of 1 nm to 20 nm in a pore size distribution graph obtained via a Barrett-Joyner-Halenda (BJH) method.
Resumen de: WO2026048534A1
This battery comprises: an electrode body which is obtained by winding a positive electrode (11) and a negative electrode (12) with a separator being interposed therebetween; an outer package can which houses the electrode body; and a sealing body for sealing an opening part of the outer package can. The sealing body is electrically connected to the positive electrode (11). The end (61) of the negative electrode (12) on the winding start side in the negative electrode longitudinal direction is positioned closer to the winding start side than the end (71) of the positive electrode (11) on the winding start side in the positive electrode longitudinal direction. A part of a first negative electrode portion (12a), which extends in the negative electrode (12) in the negative electrode longitudinal direction from a first edge (62) on the sealing body side in the negative electrode width direction to a negative electrode width directional position (63) that is at 1/3 the length in the negative electrode width direction from the first edge (62), protrudes further toward the winding start side in the negative electrode longitudinal direction than a second negative electrode portion (12b), which extends in the negative electrode (12) in the negative electrode longitudinal direction from the negative electrode width directional position (63) to a second edge (64) that is on the opposite side from the first edge (62) in the negative electrode width direction.
Resumen de: WO2026048524A1
A data acquisition unit 111 acquires time-series battery cell data including the voltage and current of secondary battery cells included in a battery pack. A direct-current resistance calculation unit 112 calculates direct-current resistances of the secondary battery cells from the ratio between voltage change and current change when a current change equal to or greater than a certain value has occurred in a predetermined period of time. A representative value calculation unit 114 classifies the calculated direct-current resistances in accordance with the levels of factors defined by conditions at the time of measuring the voltage and current used for calculating the direct-current resistances, and calculates a representative value of the direct-current resistances for each level. A map generation unit 115 generates a direct-current resistance map by plotting the representative value of the direct-current resistances calculated for each of the levels of factors.
Resumen de: WO2026048535A1
This battery includes: an electrode body in which a positive electrode (11) having a positive electrode current collector (41) and a positive electrode mixture layer (42) disposed on the positive electrode current collector (41), and a negative electrode (12) having a negative current collector (51) and a negative mixture layer (52) disposed on the negative current collector (51) are wound with a separator interposed therebetween; and a negative electrode lead (21) joined to the negative current collector (51). The negative electrode mixture layer (52) contains a silicon-containing material as a negative electrode active material. The length in the negative electrode width direction of a portion of the negative electrode lead (21) that overlaps the negative current collector (51) in the negative electrode thickness direction is 10-50% of the length in the negative electrode width direction. The weight ratio of the silicon element in the negative electrode mixture layer (52) is 7 mass% or more.
Resumen de: WO2026044711A1
The present application provides an electrochemical apparatus and an electronic device. The electrochemical apparatus of the present application comprises a positive electrode sheet and an electrolyte, the positive electrode sheet containing carbon nanotube clusters, and the electrolyte comprising a compound represented by formula (I), and further comprising a second component, the second component comprising any one or both of a compound represented by formula (II) and a compound represented by formula (III). On the basis of the mass of the electrolyte, the content of the compound represented by formula I in the electrolyte in percentage by mass is A%, and the content of the second component in percentage by mass is C%, where A and C satisfy the conditions: 10≤(A+C)≤52 and 2≤A≤25. In the present application, the components and content of the components of the electrolyte in the electrochemical apparatus are controlled, so that the electrochemical apparatus can have good low-temperature discharge performance and low low-temperature impedance.
Resumen de: WO2026045548A1
The present invention relates to the technical field of lithium-ion batteries, in particular to a lithium-ion supercapacitor cell and a formation method therefor. The negative/positive ratio of a lithium-ion supercapacitor is (1.1-2.2):1. The calculation formula for the negative/positive ratio is (AC×Ad×AL)/(Cc×Cd×CL). In the present invention, by means of a stepped low-current formation charging process, a uniform and stable SEI film is formed on a surface of an amorphous carbon negative electrode, and by means of increasing a formation cut-off voltage, the minimal potential of an anode reaches approximately 0.06 V at the end of the initial charging of a battery, thereby consuming some of irreversible active sites. Furthermore, due to the over-capacity design of the anode, the phenomenon of lithium plating on a surface of the anode can also be prevented when a battery cell is at a high cut-off voltage, thereby greatly improving the safety performance of the battery. In addition, the over-capacity anode also ensures the cycle life of the lithium-ion supercapacitor under high-rate charging and discharging.
Resumen de: WO2026045814A1
Provided in the embodiments of the present application are a cover plate assembly and a battery. The cover plate assembly is configured to be mounted on a battery case of a battery. The cover plate assembly comprises: a base plate, wherein the base plate is connected to the battery case and has at least one through hole and at least one annular boss; a terminal plate of the battery runs through the through hole; in a first direction, at least part of the annular boss protrudes from the outer surface of the base plate; the rotation center of the through hole is concentric with that of the annular boss; an inner annular face of the annular boss is a tapered face, and in a second direction, the annular boss is located at the side of the through hole away from the rotation center; the annular boss has a first extension face, with a first end of the first extension surface being connected to the outer surface, and a second end of the first extension surface extending toward the side close to the through hole; the first extension surface and the outer surface enclose to form an opening, which is configured to accommodate a member to be injection-molded; and the first extension face is configured to limit the movement of the member to be injection-molded in the first direction. Thus, the problem of poor connection strength between a terminal post, a connection ring and a cover plate can be solved.
Resumen de: WO2026046193A1
A thermal management system (100), a battery swapping station (1000), and a thermal management method. The thermal management system (100) comprises a coolant system (10), a refrigerant system (20) and a control device (80). The coolant system (10) has a coolant circulating therein and comprises a first heat exchange part (11), a second heat exchange part (12) and a third heat exchange part (13); the first heat exchange part (11) is configured to exchange heat with a plurality of positions to be heat-exchanged of the battery swapping station (1000); the second heat exchange part (12) is configured to exchange heat with a charging device (500) for said plurality of positions; and the third heat exchange part (13) is configured to exchange heat with air. The refrigerant system (20) exchanges heat with the coolant in the first heat exchange part (11) and the third heat exchange part (13), respectively. The control device (80) is configured to control start-stop and operation states of the first heat exchange part (11), the second heat exchange part (12), the third heat exchange part (13) and the refrigerant system (20) on the basis of air temperature of an environment where the thermal management system (100) is located, a preset temperature interval and heat exchange amounts required at said plurality of positions. The coolant system (10) and the refrigerant system (20) perform heat exchange for the battery swapping station (1000).
Resumen de: WO2026046189A1
An electrode sheet, a battery and an electric device. The electrode sheet comprises an electrode sheet body and at least one tab connected to the electrode sheet body, wherein the electrode sheet body comprises a current collector and active materials that coat a surface of the current collector; the electrode sheet body comprises at least three regions in a first direction, and at least two of the at least three regions are coated with different active materials; and the active material at the middle region of the at least three regions comprises secondary particles, the secondary particles being formed from a plurality of primary particles.
Resumen de: WO2026046238A1
An end-of-discharge voltage control method and system, and an electronic device. The method comprises: determining that a cell temperature of a battery is within a first temperature interval, and the remaining capacity of the battery is less than or equal to a capacity threshold; in response to a discharge rate of the battery being less than or equal to a first discharge threshold, adjusting an end-of-discharge voltage of the battery to a first voltage value; and in response to the discharge rate being greater than a second discharge threshold, adjusting the end-of-discharge voltage to a second voltage value, wherein the second discharge threshold is greater than the first discharge threshold, the first voltage value is greater than the second voltage value, and the first temperature interval is represented as a range of a rated operating temperature of the battery. By using the method, when it is determined that the remaining capacity of a battery reaches a certain range, an end-of-discharge voltage of the battery is adjusted on the basis of a cell temperature and discharge rate of the battery, and thus the battery can deliver more capacity at a high discharge rate, thereby prolonging the service time of the battery and improving the endurance capability thereof.
Resumen de: WO2026045269A1
The present disclosure provides a porous negative electrode sheet and a manufacturing method therefor, a battery cell, a battery device, and an electric device. The porous negative electrode sheet comprises a porous polymer substrate, wherein the porous polymer substrate comprises a plurality of pores. The porous negative electrode sheet comprises a lithium metal layer, wherein the lithium metal layer is located on ridges on surfaces of the porous polymer substrate in a thickness direction thereof and on ridges of the pores inside the porous polymer substrate; or, the porous negative electrode sheet comprises a lithium alloy layer, wherein the lithium alloy layer is located on ridges on surfaces of the porous polymer substrate in a thickness direction thereof and on ridges of the pores inside the porous polymer substrate. The use of the porous negative electrode sheet in the battery cell can enable the battery cell to have high gravimetric energy density, high initial coulombic efficiency, and good cycling performance.
Resumen de: WO2026045265A1
A porous negative electrode sheet and a preparation method therefor, a battery cell, a battery device, and an electric device. The porous negative electrode sheet comprises a porous metal substrate, and the porous metal substrate comprises a plurality of pores; the porous negative electrode sheet comprises a lithium metal layer, and the lithium metal layer is located on an edge wire of the surface of the porous metal substrate along the direction of thickness thereof and on an edge wire of internal pores of the porous metal substrate; or, the porous negative electrode sheet comprises a lithium alloy layer, and the lithium alloy layer is located on an edge wire of the surface of the porous metal substrate along the direction of thickness thereof and on an edge wire of internal pores of the porous metal substrate. The porous negative electrode sheet is used in a battery cell, so as to enable the battery cell to have a high initial coulombic efficiency and good cycle performance.
Resumen de: WO2026045235A1
The present application provides a negative electrode-free secondary battery and an electric device. The negative electrode-free secondary battery comprises a negative electrode current collector and a bottom coating which is arranged on at least one side of the negative electrode current collector close to a positive electrode sheet. The bottom coating comprises a linear polymer and a conductive agent, wherein the linear polymer comprises one or more of cellulose ether and a modification thereof, polyimide, nitrile rubber, hydrogenated nitrile rubber, polyvinylpyrrolidone, and hydrogenated styrene-butadiene rubber.
Resumen de: WO2026045232A1
A battery cover plate and a battery. In addition to a sealing nail (2) and a cover plate body (1), the battery cover plate further comprises a fixing plate (3) which is welded to the cover plate body (1), and a sealing cover (4); a limiting groove (31), a plug-in through hole (32) and a clearance notch (33) are provided in the side of the fixing plate (3) facing the cover plate body (1); the sealing cover (4) comprises a cylindrical portion (41) which is rotationally inserted into the plug-in through hole (32) and a limiting portion (42) which rotates with the cylindrical portion (41) in the limiting groove (31); the area of a projection of the limiting portion (42) is less than that of the clearance notch (33); and the thickness of the fixing plate (3) is T, and the depth of the limiting groove (31) is H, which satisfy 40% ≤ (T-H)/T x 100% ≤ 60%.
Resumen de: WO2026048346A1
Provided is a heat transfer suppression sheet having excellent heat insulation performance, capable of absorbing deformation of a battery cell and thereby suppressing degradation of battery performance, and capable of suppressing positional deviation. Due to the foregoing, the heat transfer suppression sheet is capable of ensuring excellent heat insulation performance even in the event of failure. This heat transfer suppression sheet (10) comprises: a heat insulating material (11) that contains inorganic particles, and organic fibers and/or inorganic fibers, and that has a first main surface (21) and a second main surface (22) forming a pair; and an elastic body (12) that is laminated in the thickness direction of the heat insulating material (11). The first main surface of the heat insulating material (11) is disposed facing the elastic body (12). A maximum height Sz1 representing the surface roughness of the first main surface (21) is lower than a maximum height Sz2 representing the surface roughness of the second main surface (22).
Resumen de: WO2026048544A1
This lithium ion secondary battery positive electrode comprises a current collector and an active material layer containing an active material and a nonaqueous binder, wherein the nonaqueous binder contains a conjugated diene copolymer that satisfies the following requirements (a) to (d). Requirement (a): the content of aromatic vinyl monomer unit is at least 6 mass% and not more than 80 mass% with respect to the total amount of the conjugated diene copolymer. Requirement (b): the amount of 1,2-vinyl bond with respect to the conjugated diene monomer unit in the conjugated diene copolymer is at least 10 mol% and not more than 60 mol%. Requirement (c): the ratio between 1,4-cis bonds and 1,4-trans bonds in the conjugated diene copolymer is 30 : 70 to 50 : 50. Requirement (d): the weight-average molecular weight is at least 100,000 and not more than 2,000,000.
Resumen de: WO2026048543A1
Provided is a non-aqueous electrolyte secondary battery comprising an electrode assembly in which a band-shaped positive electrode (11) and a band-shaped negative electrode are wound along the length direction with a separator therebetween, wherein the positive electrode (11) has a positive electrode core (30), and a positive electrode mixture layer (31) and a protective layer (33) formed on the positive electrode core (30), a non-mixture layer portion (32) in which the positive electrode mixture layer (31) is not formed is disposed at a winding-starting end portion (11B) of the positive electrode (11), the protective layer (33) contains an insulating material as a main component and is formed from the winding-starting end (11A) of the positive electrode (11) toward a winding-ending side to cover the non-mixture layer portion (32), and a portion of the protective layer (33) is disposed between the positive electrode core (30) and the positive electrode mixture layer (31).
Resumen de: WO2026048542A1
The present invention is characterized in that: an Ni-containing lithium transition metal oxide is included; the proportion of Ni in the lithium transition metal oxide is 70 mol% or higher with respect to the total number of moles of metal elements excluding Li; Al is dissolved in a solid state in the surface layer of primary particles of a lithium transition metal composite oxide; the lithium transition metal composite oxide has a crystal lattice strain of 0.1-0.25%; in a spectrum obtained by using a hard X-ray photoelectron spectroscopic method, a maximum peak is provided within a range from 1,557-1,559 eV in the range from 1,555-1,565 eV; and 0.04 mol% or more of sulfate ions with reference to the total molar quantity of the lithium transition metal composite oxide are contained.
Resumen de: WO2026050594A1
Some variations provide an anode material comprising: silicon monoxide in the form of first particles; and lithium vanadium oxide (LVO) with a composition given by Li a V b O c , wherein a = 0.1-10, b = 1-3, c = 1-9, wherein the Li a V b O c is capable of being reversibly lithiated, wherein the LVO is present in the form of second particles that are physically mixed with the first particles. Other variations provide an anode material comprising: a Si/C composite in the form of first particles; lithium vanadium oxide in the form of second particles, wherein the first particles and the second particles are physically mixed together, wherein the Si/C composite is present in a Si/C concentration from about 1 wt% to about 99 wt%, and wherein the LVO is present in a LVO concentration from about 1 wt% to about 99 wt%. Examples are provided, demonstrating the utility of the disclosed technology.
Resumen de: WO2026050008A1
A device includes a base and a depressible cover. The base defines a battery opening in which to receive a battery having the form factor of a coin-cell. The base includes a retainer located proximate to the battery opening. The depressible cover is disposed in the battery opening and is secured in place against the retainer to prevent removal of the battery from the base while the cover is coupled to the base. The cover includes a detent and a body portion, wherein the cover is releasably secured to the base upon engagement of the body portion with the retainer and engagement of the detent with a shoulder of the base.
Resumen de: WO2026049597A1
A negative electrode active material for a lithium secondary battery according to the present invention comprises: a graphite-based base material; a low-crystallinity carbon coating layer positioned on the surface of the graphite-based base material; and a conductive material included in the coating layer, wherein the content of the low crystalline carbon is 1.0 to 10 wt %, and the content of the conductive material is 0.1 to 1.0 wt %.
Nº publicación: WO2026049589A1 05/03/2026
Solicitante:
LG ENERGY SOLUTION LTD [KR]
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Resumen de: WO2026049589A1
The present specification relates to a negative electrode active material, and a negative electrode and a secondary battery comprising the same. According to one embodiment of the present invention, provided is the negative electrode active material comprising: a silicon-based active material; and a coating layer provided on the silicon-based active material, wherein the silicon-based active material comprises one or more selected from the group consisting of Si, SiOx (0
BOPI
Sede Electrónica
