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182
results.
Updated on
15/11/2026 [07:06:00]
Absstract of: US20260360744A1
The disclosure provides a tetrafluoroethylene-based polymer composition for a binder for an electrochemical device, capable of yielding a mixture sheet with excellent uniformity, and a binder for an electrochemical device, an electrode mixture, an electrode, and a secondary battery each containing the composition. Provided is a tetrafluoroethylene-based polymer composition for use in a binder for an electrochemical device, the tetrafluoroethylene-based polymer composition having an average particle size of 1 μm or more and 300 μm or less and an average aspect ratio of 2.0 or less.
Absstract of: US20260360745A1
The disclosure provides a tetrafluoroethylene-based polymer composition for a binder for an electrochemical device, capable of improving cycle characteristics of an electrochemical device and reducing or preventing gas generation, and a binder for an electrochemical device, an electrode mixture, an electrode, and a secondary battery each containing the composition. Provided is a tetrafluoroethylene-based polymer composition for use in a binder for an electrochemical device, containing a tetrafluoroethylene-based polymer containing 4 or less carboxy groups per 106 main chain carbon atoms.
Absstract of: US20260360917A1
Embodiments of the present application disclose a battery cell, a battery, and an electric device. The battery cell includes: a first wall, the first wall being provided with a pressure relief mechanism; an insulating member, the insulating member being configured to cover a partial region of the first wall, the insulating member being provided with a clearance opening, and the clearance opening being configured to provide clearance for the pressure relief mechanism. The battery cell, the battery, and the electric device of the embodiments of the present application can improve the reliability of the battery.
Absstract of: US20260360855A1
An energy storage system, including a coolant loop, a refrigerant loop, a heat exchange device, a liquid cooling plate and a battery pack. The refrigerant loop includes a refrigerant main circuit and a refrigerant branch circuit. The heat exchange device includes a coolant pipeline communicated with the coolant loop and a refrigerant pipeline communicated with the refrigerant main circuit. The liquid cooling plate includes a coolant flow channel communicated with the coolant loop and a refrigerant flow channel communicated with the refrigerant branch circuit. The battery pack is attached to the liquid cooling plate. A liquid inlet of the refrigerant flow channel is provided with a temperature control switch, and the switch is controlled based on temperature of the battery pack with respect to the first or second preset condition, so that coolant cooling mode or coolant and refrigerant cooling mode is adopted accordingly.
Absstract of: US20260360819A1
A secondary battery includes a positive electrode plate, a negative electrode plate, and an electrolyte. The positive electrode plate includes a positive electrode material layer. The positive electrode material layer includes a positive electrode active material. The positive electrode active material includes element cobalt and element magnesium. Based on a mass of the positive electrode material layer, a mass percentage of element magnesium is A %, satisfying 0.1≤A≤5. The electrolyte includes a fluorinated solvent. The fluorinated solvent includes at least one of a compound represented by formula (I), a compound represented by formula (II), a compound represented by formula (III), or a compound represented by formula (IV). Based on a mass of the electrolyte, a mass percentage of the fluorinated solvent is B %, satisfying 41.7≤B≤83.2 and 0.1≤100A/B≤6.
Absstract of: US20260360818A1
A secondary battery includes a positive electrode plate and an electrolyte, the positive electrode plate includes a positive electrode material layer, the positive electrode material layer includes a positive electrode active material, the positive electrode active material includes cobalt and nickel, and a mass percentage of the nickel is A % based on a mass of the positive electrode material layer, where 0.05≤A≤20. The electrolyte includes a fluorinated solvent, the fluorinated solvent includes at least one of a compound represented by formula (I), a compound represented by formula (II), a compound represented by formula (III), or a compound represented by formula (IV), and a mass percentage of the fluorinated solvent is B % based on a mass of the electrolyte, where 41.6≤B≤83.1.
Absstract of: US20260358428A1
A method, a battery management system, and an article of manufacture for testing a battery system are disclosed. The battery system can include a plurality of battery modules. A test process is performed with respect to the battery system via the battery management system that includes a controller device and a plurality of module interface devices. For each battery module of the plurality of battery modules, a respective module interface device of the plurality of module interface devices is operatively coupled to anode and cathode terminals of that battery module. Each module interface device can include a measurement circuit and a switching circuit. The test process can be used to independently connect, disconnect, and measure various operating conditions of the battery modules and load.
Absstract of: US20260355851A1
A welding device for welding a plurality of electrode tabs of an electrode assembly includes a tab guide part including an upper tab guide block and a lower tab guide block, the upper tab guide block and the lower tab guide block configured to be movable up and down so that the plurality of electrode tabs is gathered, an air injection part configured to inject air so as to gather the plurality of electrode tabs, and a welding part configured to weld a gathered portion of the plurality of electrode tabs. A method for welding the plurality of electrode tabs of the electrode assembly in a bundle form using the electrode tab welding device is also provided herein.
Absstract of: US20260360725A1
A positive electrode comprising a positive electrode active material, wherein a resistance component ratio, as defined by following Equation 1, is 2 or more: Rct/Rs (1). In Equation 1, Rct means a charge transfer resistance of the positive electrode, which is measured in a first frequency range for a secondary battery comprising the positive electrode, the first frequency range being from 1 Hz to 1 kHz. Rs means a surface or interface resistance of the positive electrode, which is measured in a second frequency range for the secondary battery comprising the positive electrode, the second frequency range being from more than 1 kHz to 1,000 kHz. A lithium secondary battery comprises the positive electrode, a negative electrode, and an electrolyte. A method of preparing the positive electrode comprises: mixing a positive electrode active material in distilled water and washing the positive electrode active material with water.
Absstract of: US20260360949A1
A battery pack includes a battery cell having a first electrode and a second electrode, a first connector extending from the first electrode and one side of the first connector being electrically connected to the first electrode, a first terminal connected to another side of the first connector, a second connector extending from the second electrode and one side of the second connector being electrically connected to the second electrode, a second terminal connected to another side of the second connector, a third connector extending from the first connector and one side of the third connector being connected to a part of the first connector, and a third terminal connected to another side of the third connector. The third connector includes an electrostatic force load element.
Absstract of: US20260360920A1
Disclosed is a battery pack comprising: a pack housing having an inner space in which battery cells are accommodated; and a relief valve on the pack housing, wherein the relief valve comprises: a fixing frame on the pack housing and having a venting passage communicating with the inner space of the pack housing; a valve cover configured to move according to a pressure of the inner space of the pack housing between an open position and a closed position; and a mesh plate coupled to the valve cover and configured to move together with the valve cover and having a plurality of venting holes, and wherein when the valve cover is in the open position, the inner space of the pack housing is configured to communicate with the external space through the plurality of venting holes of the mesh plate.
Absstract of: US20260360863A1
Provided are a battery module, an energy storage system and an electric device. When liquid in a flow guiding cavity contacts a bottom side of a battery cell, the liquid is forced to enter a flow guiding channel, to perform heat management on the battery cell. In this process, since an opening of the flow guiding cavity directly matches with the battery cell, the liquid in the flow guiding cavity directly contacts the bottom side of the battery cell, thereby increasing a contact area between the liquid and the battery cell and improving a heat management effect. Meanwhile, since a fluid channel which forces the liquid to enter the flow guiding channel and flow out from the flow guiding channel is formed, the liquid better fits a side surface of a cavity wall of the flow guiding channel, thereby facilitating heat exchange between the liquid and the battery cells.
Absstract of: US20260360862A1
An immersion liquid cooling device includes a housing including a bottom plate and a side plate, and a liquid cooling member provided on the bottom plate. The bottom plate and the side plate define an accommodating cavity accommodating a battery cell group, and the side plate is provided with a liquid inlet and a liquid outlet. The liquid cooling member includes a flow channel portion extending along a first direction, a supporting portion is provided on one side of the flow channel portion in a second direction, a flow guide cavity is formed between the flow channel portion and the supporting portion, the flow guide cavity is in communication with the flow channel portion. An end of the flow channel portion is in communication with the liquid inlet. The flow channel portion is provided with a first supporting surface. The supporting portion is provided with a second supporting surface.
Absstract of: AU2025432440A1
Provided in the present application are a cover plate assembly, a cell, and a battery pack. The cover plate assembly comprises an end cap, a post, a bottom plate, and a sealing ring. The post comprises a first section and a second section that are connected to each other, the diameter of the second section being smaller than the diameter of the first section, the first section having a first shoulder face facing toward the second section, and the first section passing through the end cap. The bottom plate is sleeved onto the second section. The sealing ring is sleeved onto the second section and is located between the end cap and the bottom plate, the sealing ring having a first end face facing away from the bottom plate. The inner diameter side of the first end face abuts against the first shoulder face.
Absstract of: US20260360729A1
A positive electrode sheet includes a composite current collector and a positive electrode film layer provided on at least one surface of the composite current collector. The composite current collector includes a polymer material substrate layer and a metal composite layer located on at least one surface of the polymer material substrate layer, and an active material of the positive electrode film layer contains the Ni element. The metal composite layer includes a metal matrix layer and a metal oxide layer which are stacked. The resistivity of the metal oxide layer is greater than that of the metal matrix layer.
Absstract of: US20260360906A1
A battery pack includes a case, a bottom cover, a PCB, and a plurality of battery cells. The case has an open lower portion and an inner space. The bottom cover is coupled to the lower portion of the case and the PCB is accommodated within the case and positioned on the bottom cover. The plurality of battery cells is accommodated within the case and positioned on the PCB.
Absstract of: US20260360733A1
A battery cell, a battery apparatus, an electrical apparatus, and an energy storage apparatus are provided. The battery cell includes a stacked-type cell having a positive electrode plate and a negative electrode plate. The positive electrode plate includes a current collector and a positive electrode film layer disposed on at least one side of the current collector, the film layer including lithium-containing transition metal phosphate particles with at least part of the surface coated by carbon. When fully discharged, the compacted density of the positive electrode plate is 2.3-2.6 g/cm3, and the single-side surface density of the film layer is 0.25-0.45 g per 1540.25 mm2. In a cumulative sphericity-area distribution of particles ≥1000 nm, LR1A50 is 0.6-0.8. In a cumulative distribution of graphitization degree measured by confocal Raman spectroscopy, median C50 is 0.95-1.20. The battery cell exhibits high capacity and good cycling performance.
Absstract of: US20260360866A1
The present inventions relate to methods, systems, apparatuses, controllers, software, and composition of matter associated with curtailing (e.g., preventing) adverse effect(s) relating to a battery cell such as occurring during its lifetime. The adverse effects may be associated with a triggering event (e.g., a melting temperature) affecting at least one material of the battery cell, or of a battery comprising the battery cell. The at least one material may be an insulating material.
Absstract of: US20260360843A1
This application provides a battery management method and a related device, and relates to the field of terminal technologies. The method includes the following steps: a power-on level is received, with charging and discharging channels of a first battery cell and a second battery cell being disabled; a first battery management chip controls the first battery cell to discharge, and a second battery management chip controls the second battery cell not to discharge, in response to the power-on level; a second battery management chip controls the second battery cell to discharge when a voltage difference between the first battery cell and the second battery cell is less than or equal to a power-on voltage difference threshold; and an electronic device is controlled to power on when both the first battery cell and the second battery cell are discharged.
Absstract of: US20260355778A1
A slot die coater includes a slot for discharging a coating solution in an opposite direction of gravity onto a surface of a substrate that is continuously driven and transferred by a coating roll. The slot die coater further includes a first die block and a second die block, the first die block and the second die block defining the slot therebetween. A center of rotation axis of the coating roll is positioned toward the second die block rather than an upper part of a first die lip forming a tip of the first die block with respect to the substrate.
Absstract of: US20260360904A1
A threaded fastener and a battery pack are provided. The threaded fastener includes a threaded rod and a flange plate. The threaded rod is configured to be screwed into a part to-be-connected. The flange plate includes a pressing surface. One end of the threaded rod is connected to the pressing surface. The pressing surface is configured to be pressed against the part to-be-connected. A circumferential edge of the pressing surface is formed with an anti-scratch arcuate surface. The anti-scratch arcuate surface is tangential to the pressing surface.
Absstract of: US20260360859A1
A battery pack includes a cell array structure, a plurality of cooling tubes, and a pack case. The cell array structure includes a plurality of battery cells and the plurality of cooling tubes are provided between the plurality of battery cells. The pack case accommodates the cell array structure and has a cooling medium channel in communication with the plurality of cooling tubes.
Absstract of: US20260360849A1
The present disclosure relates to a method of preparing a recycled cathode active material and a cathode active material prepared using the same. More particularly, the method of the present disclosure includes step (a) of heating a waste cathode, in which a cathode active material layer is formed on a current collector, to thermally decompose a binder and a conductive material in the active material layer, separate the current collector from the cathode active material layer, and recover a cathode active material in the active material layer; step (b) of adding a lithium precursor to the recovered cathode active material and performing annealing at 400 to 1000 °C for 8 to 12 hours; and step (c) of washing the annealed cathode active material with a washing solution.
Absstract of: US20260360700A1
A battery cell, a battery apparatus, a power consuming apparatus, and an energy storage apparatus are disclosed. The battery cell includes a stacked electrode assembly with a positive electrode plate and a negative electrode plate. The positive electrode plate has a current collector and a film layer comprising lithium-containing transition metal phosphate particles, at least partly coated with carbon. In a cumulative distribution curve of graphitization degree C values obtained from the positive electrode film layer using a laser confocal Raman spectrometer in area mapping mode, the median C50 of the graphitization degree ranges from 0.95 to 1.20. The graphitization degree C value is defined as I_G/I_D, where I_G represents the intensity of the G band at 1580±100 cm−1 and I_D represents the intensity of the D band at 1350±100 cm−1. When fully discharged, the positive electrode plate has a compaction density of 2.3-2.6 g/cm3.
Nº publicación: US20260360699A1 12/11/2026
Applicant:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Absstract of: US20260360699A1
The present application discloses a battery cell, a battery apparatus, an electrical apparatus, and an energy storage apparatus. The battery cell includes a stacked-type cell comprising a positive electrode plate and a negative electrode plate. The positive electrode plate includes a current collector and a positive electrode film layer on at least one side of the collector. The film layer contains lithium-containing transition metal phosphate particles, at least partially coated with carbon. The single-side thickness of the film layer (H) is 70-120 μm. A first region is defined at the bottom of the film layer adjacent to the current collector. Based on the total particle area in a cross-section along the thickness direction, 12-50% are particles with size R1≥1000 nm. In a cumulative sphericity distribution of such particles, LR1A150 is 0.6-0.8. When fully discharged, the compacted density of the positive electrode plate is 2.3-2.6 g/cm3.
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