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1525
resultados
Última actualización
12/09/2025 [07:43:00]
Resultados 1325 a 1350 de 1525
Resumen de: US2025270111A1
A positive electrode active material with excellent charge and discharge rate characteristics and a secondary battery using the positive electrode active material are provided. The positive electrode active material in which a crystallite size calculated using an XRD pattern is greater than or equal to 150 nm; the ratio of nickel to the total number of transition metal atoms is higher in an inner portion than in a first surface portion and a second surface portion; the ratio of the number of atoms of at least one element selected from cobalt and manganese to the total number of transition metal atoms is higher in the second surface portion than in the inner portion; and the concentration of at least one of additive elements is higher in the first surface portion than in the inner portion and the second surface portion is provided.
Resumen de: US2025270107A1
A composition MxABO4 can include: a composition ABO4, wherein M is selected from the group consisting of: Ca, Mg, and Na, wherein M is intercalated with ABO4, wherein x is greater than or equal to 0, wherein A includes at least one selected from the group consisting of: Dy, Er, Sm, Nd, Tm, Pr, Gd, Sc, Y, Eu, Ho, Tb, Bi, Lu, La, Yb, Ce, Zr, Hf, Th, U, Ce, In, Tl, Pa, Pu, Ba, Pb, and Sr, wherein B includes at least one selected from the group consisting of: B, P, V, Cr, As, Si, Ge, N, Nb, Mo, Ru, Sb, W, Re, Bi, Mn, Fe, Se, Tc, Sn, and Co, and wherein the composition ABO4 has a tetragonal structure.
Resumen de: US2025270104A1
A pre-sodium treated positive electrode material for copper-zinc-based sodium ion battery and method of preparing the same are provided. The method includes the steps of obtaining a mixed solution containing copper-zinc-based elements through wet pre-sodium first, then conducting spray drying of the mixed solution containing copper-zinc-based elements to obtain precursor powder of positive electrode material for copper-zinc-based sodium ion battery, and then mixing the precursor powder with a sodium source for sintering, coating and crushing to obtain positive electrode material for copper-zinc-based sodium ion battery. The pre-sodium treated positive electrode material for copper-zinc-based sodium ion battery thus prepared introduces weakly oxidizing zinc and nickel elements on the basis of the copper-based material, reducing the use of highly oxidizing copper and iron elements. After being prepared into a battery, the oxidation of metal ions in the electrochemical environment is reduced overall.
Resumen de: US2025270109A1
A positive electrode active material includes a lithium-rich manganese-based oxide represented by the following Chemical Formula 1, and has a structure in which a rock-salt-type lithium manganese oxide and a layered lithium transition metal oxide are mixed. The lithium-rich manganese-based oxide may have a prescribed internal porosity.LiaNibCocMndMeO2 Chemical Formula 1in Chemical Formula 1, 1.00
Resumen de: US2025273833A1
The present disclosure provides a solid-state battery with highly reliable insulation by an insulating member. The solid-state battery 10 of the disclosure comprises an electrode stack 110.The electrode stack has a first current collector layer 111, a first electrode active material layer 112, a solid electrolyte layer 113, a second electrode active material layer 114 and a second current collector layer 115, in that order. An insulating member 120 is disposed on at least part of the edge of the electrode stack. The second current collector layer extends from the edge of the electrode stack on which the insulating member is disposed, and the insulating member is joined with the electrode stack and second current collector layer. The insulating member extends from the edge of the electrode stack along the second current collector layer.
Resumen de: US2025273691A1
A current collector with a coating, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The coating includes at least a surface modification layer. The coating is formed on at least one side of the current collector. A thickness of the surface modification layer is 100 nm to 10 μm. The coating formed on at least one side of the current collector can effectively block direct contact between a negative electrode metal and an electrolyte solution constituent, thereby reducing side reactions between the negative electrode metal and the electrolyte solution, significantly reducing gas generated by the battery during cycling, and improving the cycle performance and safety of the battery.
Resumen de: US2025273827A1
Provided are battery cell, battery, and electric device. The battery cell includes housing, electrode assembly, and electrode terminal, wherein the housing has wall portion, which is provided with lead-out hole; the electrode assembly is accommodated in the housing; the electrode terminal includes first terminal portion and second terminal portion, which are made of different materials and compounded with each other; the first terminal portion passes through the lead-out hole, and the second terminal portion is electrically connected to the electrode assembly; the first terminal portion includes first limiting portion, and in the thickness direction of wall portion, the first limiting portion limits the first terminal portion from being separated from the lead-out hole in direction away from the electrode assembly; and when the first terminal portion is subjected to outward pulling force, the first limiting portion limits the electrode terminal from being separated from the lead-out hole.
Resumen de: US2025273692A1
A current collector according to the present disclosure includes: a substrate; and a coating layer coating the substrate, wherein the coating layer includes conductive carbon and a first binder, the first binder includes an aromatic super engineering plastic, and a moisture content calculated based on moisture generated from the current collector when heated to 200° C. is 200 mass ppm or less.
Resumen de: US2025273686A1
An electrode plate according to the present disclosure includes: a current collector, the current collector including a substrate and a coating layer coating the substrate; and an electrode layer disposed on the current collector, wherein the coating layer includes conductive carbon and a first binder, the electrode layer includes a second binder, and the second binder includes a styrenic elastomer in which a mole fraction of a repeating unit derived from styrene is 0.12 or more and a total nitrogen content is 120 mass ppm or more and 400 mass ppm or less.
Resumen de: US2025273749A1
Embodiments described herein relate to electrochemical cells with dendrite prevention mechanisms. In some aspects, an electrochemical cell can include an anode disposed on an anode current collector, a cathode disposed on a cathode current collector, the cathode having a first thickness at a proximal end of the cathode and a second thickness at a distal end of the cathode, the second thickness greater than the first thickness, a first separator disposed on the anode, a second separator disposed on the cathode, an interlayer disposed between the first separator and the second separator, the interlayer including electroactive material and having a proximal end and a distal end, and a power source electrically connected to the proximal end of the cathode and the proximal end of the interlayer, the power source configured to maintain a voltage difference between the cathode and the interlayer below a threshold value.
Resumen de: US2025273756A1
A method is disclosed for managing and safeguarding a battery environment. The method includes continuous monitoring of individual battery voltages in a battery room and automatic isolation of defective batteries, employing a controller-solenoid switch mechanism responsive to voltage abnormalities. The methodology accounts for the state of battery charging, invoking fan activation when charging occurs or hydrogen levels rise. Also disclosed is a system for managing a battery system in a battery room and isolating defective batteries. Enhanced system features include hydrogen sensors strategically placed throughout, including the ceiling, with outcome-driven fan operation and comprehensive notification mechanisms to inform on-site personnel of gas release locations, maintaining a secure and efficient battery room environment.
Resumen de: US2025273818A1
A method for producing an electrode is provided. The electrode includes a current collector having a polygonal shape with at least one side exceeding 1 meter, an active material layer provided on a surface of the current collector, and a seal component welded to the surface of the current collector. The method includes a disposing step that disposes the seal component on the surface of the current collector along the side, and a welding step that presses a target section against the current collector and heats the target section. The welding step is performed multiple times between opposite end portions of the seal component. In the second and subsequent welding steps, the target section is a part of the seal component that is at least partially shifted from a target section of the previous welding step.
Resumen de: US2025273762A1
A battery system having a housing configured to receive a battery cell that is configured to generate thermal energy. The housing includes a first wall and a second wall, both of which are positioned proximate to the battery cell. The first wall and the second wall form in part a cell compartment. The battery system further includes a unitary heat sink having a first portion embedded into the first wall and a second portion embedded into the second wall.
Resumen de: US2025273660A1
The present disclosure provides a method for making a coated single crystalline cathode active material. The continuous hydrothermal manufacturing process may include several steps: a) preheating a metal solution, a lithium solution, and a coating solution; b) generating a first mixture by mixing the metal solution and the lithium solution at below a critical point of the first mixture; c) generating a second mixture by mixing the first mixture and the coating solution above a critical point of the second mixture to synthesize the coated single crystalline cathode active material; and d) filtering out the coated single crystalline cathode active material.
Resumen de: WO2025175853A1
An electric-vehicle safety monitoring system and apparatus. The electric-vehicle safety monitoring system comprises a main-control terminal, wherein a detection unit is connected to the main-control terminal, and the detection unit is used for performing comprehensive detection on a battery pack of an electric vehicle; a computing unit is connected to the detection unit, and the computing unit is used for receiving data of the detection unit; a prompting unit is connected to the computing unit, and the prompting unit is used for receiving a result of the computing unit and taking a corresponding measure on the basis of the result of computation; and the detection unit comprises a temperature and humidity monitoring module, the temperature and humidity monitoring module comprises a substrate (100), a protective shell (101) is mounted on one end of the top of the substrate (100), a connecting line (102) is mounted on the other end of the substrate (100), and buffer assemblies are provided at four corners of the substrate (100), and by means of the provision of the buffer assemblies, when the electric vehicle runs, the influence of a vibration force on the whole temperature and humidity monitoring module can be reduced. Systematical and comprehensive detection and analysis are performed on a battery pack by means of a detection unit, and thus an early-warning period is extended and the service life of the battery pack is prolonged.
Resumen de: WO2025176062A1
The present disclosure provides a lithium ion secondary battery. The lithium ion secondary battery of the present disclosure comprises a positive electrode sheet; the positive electrode sheet comprises a positive electrode current collector, a positive electrode active layer, and a positive electrode protection layer arranged between the positive electrode current collector and the positive electrode active layer; the positive electrode protection layer comprises conductive particles; the positive electrode active layer comprises a positive electrode active material; the ratio of the thickness d1 of the positive electrode protection layer to the particle size dv50 of the conductive particles is greater than or equal to 4. According to the lithium ion secondary battery of the present disclosure, short-circuit contact between the positive electrode current collector and a negative electrode sheet can be avoided when the battery is mechanically abused, so that the lithium ion secondary battery has excellent safety performance; moreover, the active material in the positive electrode active layer can be prevented from being in direct contact with the positive electrode current collector, thereby reducing the local damage of the active material to the current collector during rolling, enhancing the mechanical strength of the current collector, solving the problem that an electrode sheet easily breaks, and improving the safety performance of the battery. In addition, the overall com
Resumen de: WO2025175904A1
The present application provides an electrode sheet and a battery cell. The electrode sheet comprises a current collector and an active material layer arranged on at least one side surface of the current collector; and the electrode sheet comprises a single-sided area, one side of the current collector located in the single-sided area is provided with the active material layer, and the active material layer located in the single-sided area is provided with grooves. By means of forming the grooves on the active material layer located in the single-sided area, the bending degree of the single-sided area of the electrode sheet can be reduced, and when the electrode sheet is used to assemble the battery cell, the adhesion between the single-sided area of the electrode sheet and a separator is improved, thereby shortening a transport pathway of lithium ions of the battery cell during charge and discharge, and alleviating problems such as lithium precipitation and black spots.
Resumen de: US2025270095A1
A graphitic carbon material for a negative electrode of a lithium ion secondary battery, in which a crystallite size Lc (002) determined by X-ray diffraction is from 35 nm to 150 nm, and a tap density is 0.90 g/cm3 or more.
Resumen de: US2025270065A1
Examples of the present disclosure relate to a tape attaching apparatus of which an installation space is reduced, with productivity of tape attaching work improved, and accuracy of a tape attachment position is improved. Examples of the present disclosure include a tape attaching apparatus including a tape supply unit that supplies a tape, an electrode plate supply unit that supplies an electrode plate, and a rotating head that receives the tape supplied from the tape supply unit and rotates to attach the tape to the electrode plate supplied from the electrode plate supply unit.
Resumen de: US2025269812A1
A heat dissipation apparatus, a vehicle, and a heat dissipation control method are disclosed. The heat dissipation apparatus includes a housing and an air cooling part. The housing includes a first plate body, an intelligent module close to the first plate body is disposed in the housing, and the air cooling part and the intelligent module are disposed on a same side of the first plate body. The first plate body has a first cavity inside, the first plate body is located in a plurality of liquid cooling loops, and the air cooling part and/or the first plate body are/is configured to dissipate heat for the intelligent module. In addition, the first plate body may be connected to an appropriate liquid cooling loop to avoid a condensation phenomenon of the intelligent module when the liquid cooling heat dissipation mode is used for the intelligent module.
Resumen de: US2025269637A1
A method includes providing a feedstock. The feedstock includes a first active material disposed on a first current collector and a second active material disposed on a second current collector. The method includes heating, by induction, the feedstock above a first temperature for a first period of time. The method includes delaminating the first active material from the first current collector during the first period of time. The method includes heating, by induction, the feedstock above a second temperature, which is greater than the first temperature, for a second period of time subsequent to the first period of time. The method includes delaminating the second active material from the second current collector during the second period of time.
Resumen de: US2025269634A1
The present invention discloses a lamination device and a unit cell manufacturing method. The lamination device of the present invention includes a vision unit disposed at a downstream side of the final cutter unit and configured to capture an image of the unit cell, and a control unit configured to calculate a brightness value of the captured image received from the vision unit and control the pressure adjusting unit to correct the pressure of the lamination roller unit according to the calculated brightness value.
Resumen de: US2025273688A1
Examples of the present disclosure a wound type electrode assembly that includes a conductive layer formed on an electrode uncoated portion of an outermost side of the electrode assembly.
Resumen de: US2025273684A1
A cathode active material layer includes conductive active material particles individually with a core and a coating on a surface of the core, wherein the core comprises a cathode active material, and the coating comprises an electrically conductive material; and a binder including fibers that form a three-dimensionally networked mesh of fibers. The cathode active material layer is free or substantially free of electrically conductive particles other than the conductive active material particles. The conductive active material particles are accommodated in the 3D mesh of the binder, and adjacent ones of the conductive active material particles abut one another within the 3D mesh, in which the electrically conductive material of the coating of one of the conductive active material particles makes at least one contact with the electrically conductive material of the coating of one or more adjacent ones of the conductive active material particles.
Nº publicación: US2025273690A1 28/08/2025
Solicitante:
JIANGYIN NANOPORE INNOVATIVE MATERIALS TECH LTD [CN]
JIANGYIN NANOPORE INNOVATIVE MATERIALS TECHNOLOGY LTD
Resumen de: US2025273690A1
A composite current collector and preparation method therefor, electrode plate and secondary battery. The current collector comprises a polymer base membrane, and aluminum-plated layers, which are arranged on surfaces of two sides of the polymer base membrane. The aluminum-plated layer comprises a first sub-layer and a second sub-layer; the first sub-layer is closer to the polymer base membrane than the second sub-layer; and the particle size of aluminum particles in the first sub-layer is 10 nm to 30 nm, and the particle size of aluminum particles in the second sub-layer is 80 nm to 100 nm. The current collector not only has relatively high conductivity, but also has relatively high surface energy; and during a coating process of an active substance, the interface internal resistance between a battery electrode plate and a current collector can be significantly improved, thereby improving the capacity and cycling performance of a lithium battery.
BOPI
Sede Electrónica
