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1313
results.
Updated on
13/08/2025 [07:30:00]
Results 1075 to 1100 of 1313
Absstract of: US2025246618A1
Doped and coated nickel-rich cathode active materials, and methods of manufacture, are described. The doped and coated nickel-rich cathode active materials enable energy storage devices with improved performances, including but not limited to improved energy densities and capacity retention.
Absstract of: US2025246637A1
An anode current collector includes a resin and a fibrous conductive filler, in which an aspect ratio of the fibrous conductive filler is 20 or more, a content of the resin in the anode current collector is 60% by mass or more and less than 90% by mass, and a content of the fibrous conductive filler in the anode current collector is more than 10% by mass and 40% by mass or less.
Absstract of: US2024392893A1
A vent assembly has a housing defining a cavity, a first end, a second end, a vent opening, a valve opening, and a coupling structure towards the second end. The housing defines a valve opening and a vent opening. A vent is coupled to the housing across the vent opening, and a one-way relief valve is scalably disposed on the housing across a valve opening.
Absstract of: WO2024123811A1
A process for direct recycling of Li-ion battery cathode material includes hydrothermally treating cathode black mass (CBM) in an alkaline solution to decompose polyvinylidene fluoride (PVDF) and remove electrolyte salts, washing the treated CBM in deionized water to remove extra alkaline solution, conductive carbon, degraded PVDF and impurities, and annealing the washed material for crystal structure repair and remnant carbon removal.
Absstract of: US2024194859A1
A battery electrode composition is provided comprising composite particles, with each composite particle comprising active material and a scaffolding matrix. The active material is provided to store and release ions during battery operation. For certain active materials of interest, the storing and releasing of the ions causes a substantial change in volume of the active material. The scaffolding matrix is provided as a porous, electrically-conductive scaffolding matrix within which the active material is disposed. In this way, the scaffolding matrix structurally supports the active material, electrically interconnects the active material, and accommodates the changes in volume of the active material.
Absstract of: US2025244134A1
Disclosed herein is a porous substrate having silver and optionally silver oxide and a silver sulfide coating. Also disclosed herein is a battery having a cathode, an anode, and a separator between the cathode and the anode. The cathode includes a substrate having silver and optionally silver oxide and a silver sulfide coating. Also disclosed herein is a method of submerging a substrate having silver and optionally silver oxide in a solution of elemental sulfur in dimethyl sulfoxide to form silver sulfide on the surface of the substrate.
Absstract of: US2025244192A1
The disclosure provides a method, device and system for airtightness testing of a battery pack and a battery pack. The method for airtightness testing includes: placing a gas source device in a battery pack; sealing a case of the battery pack; detecting, in response to meeting a preset condition, concentration of a source gas in the battery pack, and determining whether the battery pack meets the airtightness standard. The system for airtightness testing includes a processor, a gas source device, a gas sensor, a first heating assembly used to heat a battery cell, and a second heating assembly used to heat the source gas. A battery management system can obtain a more accurate airtightness result by detecting the concentration of the source gas.
Absstract of: US2025243560A1
Provided are a metal extractant for extracting metal ions present in a water phase to an oil phase, and a separation recovery method of metal ions. In the metal extractant, nitrogen atoms positioned at both terminals of a molecular chain forming the metal extractant do not form a carbamoyl bond and include an unsubstituted hydrocarbon group and a group including and any coordinating functional group in a group G1 of coordinating functional groups below as a coordinating functional group (a) for metal ions to be extracted, or include an unsubstituted hydrocarbon group. The separation recovery method includes mixing an oil phase including the metal extractant and a water phase including plural kinds of metal ions.
Absstract of: US2025243604A1
A method for preparing a chalcogenide/sulfur cathode for an alkali metal secondary battery, where sulfur and/or other chalcogenide and/or mixtures represents both active mass and removable template/porogen, where the content of active mass is defined by the glassy sulfur and porosity is dictated by the crystalline phase template, with the steps of growing a chalcogenide/sulfur wafer, comprising tailored content of glass/polymeric and crystalline allotropes, having a specific presence/gradients/areal distribution of crystalline to glassy/polymeric allotropes, and removing the crystalline allotropes-template/porogen of chalcogenide/sulfur from the chalcogenide/sulfur glass-crystalline wafer by immersion in a solvent, creating a defined porosity within the wafer by etching crystalline phase out from glass-crystalline wafer-like cathode and leaving 3D glassy/polymeric chalcogenide/sulfur in a further incubation stage due the meta-stability of glass/polymer allotrope transition into gamma monoclinic sulfur with trace amounts of glass/polymer allotropes is created, crosslinked with graphene based and or other suitable co-monomer(s) or capping agents.
Absstract of: US2025244394A1
One aspect of the present disclosure includes a battery diagnosis apparatus including a measuring unit configured to measure a battery voltage, a battery current, and a battery temperature, a storage unit configured to store a plurality of internal resistance values calculated based on the battery voltage, the battery current, and an environment data item, which is a factor affecting an internal resistance value, at each diagnosis time of diagnosing defects of the battery, and a control unit configured to extract, at each diagnosis time, a plurality of diagnosis times, and a second condition that the plurality of diagnosis times are previous diagnosis times, calculate a moving average, and diagnose the defects of the battery by comparing the internal resistance value with an upper band threshold larger than the moving average by a predetermined value and a lower band threshold smaller than the moving average by a predetermined value.
Absstract of: US2025244393A1
A battery information providing apparatus according to an embodiment of the present disclosure includes: a profile acquisition unit that acquires a differential profile based on a capacity and a voltage of a battery; and a control unit that determines a target cycle corresponding to the battery and a target C-rate (current-rate) corresponding to the differential profile, and correct the differential profile based on an overvoltage profile corresponding to the target cycle and the target C-rate, thereby generating a corrected profile.
Absstract of: US2025244390A1
A battery profile generating apparatus includes: a charging/discharging unit configured to charge and discharge a battery; a measurement unit configured to measure battery information that includes at least one of the voltage, current, and temperature of the battery during the charging/discharging process; and a control unit. The control unit is configured to: determine a target temperature and a target C-rate corresponding to charging/discharging conditions based on a preset reference profile that represents the correspondence between a threshold temperature and a threshold C-rate; control the charging/discharging unit to charge or discharge the battery at the target C-rate when the battery temperature corresponds to the target temperature; and generate a battery profile corresponding to the battery based on the battery information.
Absstract of: US2025248137A1
A solar cell assembly preparation method. In the process of preparing a conductive layer, several conductive layers separated by a first trench are formed on the substrate. After the conductive layers are formed, the separating function of second separating members and the separating function of third separating members are respectively utilized to ensure that the functional layer groups formed on one side of the conductive layers are separated by and located on two sides of an entirety formed by the second separating members and the third separating members.
Absstract of: US2025244391A1
Voltage data capture circuits and techniques. In one example, a circuit includes a differential transconductance stage, a differential transimpedance stage, and an analog to digital converter (ADC). The differential transconductance stage is configured to convert a differential input voltage into a differential current, and the differential transimpedance stage is configured to convert the differential current into a differential output voltage. The ADC is configured to sample the differential output voltage to produce a digital output signal. The circuit may further include a common-mode voltage regulator configured to regulate a common-mode input voltage for the differential transimpedance stage. The circuit can be used, for instance, in a battery monitoring system, or other voltage monitoring application.
Absstract of: WO2025159594A1
The present invention relates to an electrolyte for a lithium-sulfur battery and a lithium-sulfur battery including same. The electrolyte for a lithium-sulfur battery may include a non-aqueous solvent, a lithium salt, a nitrate, and an aryl derivative, wherein the non-aqueous solvent comprises: a heterocyclic compound containing one oxygen atom (O) or sulfur atom (S) in the ring structure; and glycol ether, and the aryl derivative contains at least one of compounds represented by any one of chemical formulas 1 to 4.
Absstract of: WO2025159001A1
This cylindrical battery is characterized by comprising: an electrode body in which a positive electrode and a negative electrode are wound via a separator; a non-aqueous electrolyte; a bottomed cylindrical exterior can that accommodates the electrode body and the non-aqueous electrolyte; a sealing body that closes the opening of the exterior can; and an insulating plate (30) that is disposed between the electrode body and the sealing body and has a through-hole (32). The cylindrical battery is further characterized in that the surface of the insulating plate (30) on the electrode body side is provided with a protrusion (33) extending toward the electrode body along the edge of the through-hole (32) in a region facing the electrode body.
Absstract of: WO2025159583A1
A separator according to an embodiment of the present invention comprises: a porous polymer substrate; and a porous coating layer formed on both surfaces of the porous polymer substrate, wherein: the separator has one end (A), the other end (A'), and one point (B) between the one end (A) and the other end (A') in the machine direction; the thickness of the separator is constantly maintained from the one end (A) to the other end (A'); the thicknesses of the porous polymer substrate and the porous coating layer are constantly maintained in a region (AB) between the one end (A) and the one point (B); and the thickness of the porous polymer substrate decreases and the thickness of the porous coating layer increases in a region (BA') between the one point (B) and the other end (A').
Absstract of: WO2025159576A1
Disclosed in the present specification are an electrode assembly and a secondary battery. Disclosed in the present specification is an electrode assembly in which an electrode and a separator called a safety-reinforcing separator (SRS) are combined, exhibiting low resistance and excellent electrical characteristics in a normal state of a secondary battery and rapidly converting into an insulator to thereby secure stability in an abnormal state of the secondary battery. Disclosed also in the present specification is a secondary battery including the electrode assembly.
Absstract of: WO2025159573A1
The present specification discloses an electrode assembly and a secondary battery. The present specification discloses an electrode assembly formed by combining: an electrode which exhibits low resistance and excellent electrical characteristics in a normal state of a secondary battery, and in an abnormal state of the secondary battery, may be rapidly converted into an insulator so as to enable securing stability; and a separator which is referred to as a so-called safety-reinforcing separator (SRS). The present specification also discloses a secondary battery comprising the electrode assembly.
Absstract of: WO2025157230A1
The present application relates to the technical field of batteries, and discloses a battery cell and a battery pack. The battery cell comprises a casing and an explosion-proof valve; the casing is provided with an accommodating cavity; the casing comprises a plurality of sidewalls that are used for defining the accommodating cavity; the sidewalls are provided with a pressure relief hole communicated with the accommodating cavity; the explosion-proof valve covers and seals the pressure relief hole; the explosion-proof valve comprises a body and a base; the body is provided with a notch; the body comprises an elastic strain portion; the elastic strain portion is arranged around at least part of the notch; the base surrounds the body, and the base is separately connected to the body and the sidewalls; the elastic strain portion is used for generating elastic deformation in the direction from the base to the notch. According to the present application, the explosion-proof valve comprising the elastic strain portion is arranged in the pressure relief hole on the casing, so as to prevent welding deformation from being generated when welding the explosion-proof valve to the casing, thereby preventing the opening pressure change of the explosion-proof valve, and further improving the safety of the battery cell.
Absstract of: WO2025157228A1
A cover plate assembly and a battery cell comprising the cover plate assembly. The cover plate assembly comprises a cover plate (1) and an explosion-proof valve body (2). The explosion-proof valve body (2) comprises a valve plate (20); the valve plate (20) comprises an opening portion (200) and an outer edge portion (201) surrounding the opening portion (200); the outer edge portion (201) is connected to the cover plate (1); the valve plate (20) is provided with a score line (202); the score line (202) has a first end (2020) and a second end (2021); a base (21) surrounds the outer edge portion (201); and the base (21) has a first side surface (210) and a second side surface (211). The residual thickness of the valve plate (20) at the score line (202) is T, the depth of the score line is T1, the distance between the first side surface (210) and the second side surface (211) is W1, and the minimum distance between the score line (202) and the second side surface (211) is W2, satisfying: 0.2≤T/(T+T1)≤0.5, and 0.3≤W2-W1≤5. By optimizing the parameters and dimensions of portions of the valve plate (20), it is ensured that the explosion-proof valve body (2) and the cover plate (1) have sufficient structural strength, thereby improving the overall strength of the battery cell. In addition, when the pressure inside the battery cell reaches a threshold, the opening portion (200) can be opened in a timely manner by means of the score line (202), thereby improving the safety of
Absstract of: WO2025157243A1
A battery housing and a power battery. The battery housing comprises cover plates and a casing (4). The casing (4) is of a hollow structure having openings, the cover plates are provided with connecting bosses (3), and the connecting bosses (3) are inserted into the openings of the casing (4), so that the cover plates close the casing (4) to form an accommodating cavity (8). A weld seam (9) is formed at the junction of the casing (4) and each cover plate, the weld seam (9) has a weld width n, the thickness of the area of the cover plate in which the connecting boss (3) is provided is a, and a weld width ratio is X=n/a, with a range of 0.16≤X≤1.
Absstract of: EP4593167A2
Current collector (100) comprising a central region (113) and edge regions (114), the central region being used for welding to the housing of a battery, wherein the central region (113) is provided with a plurality of embossed bumps (115), the embossed bumps (115) being in a cross array distribution.
Absstract of: EP4593241A1
Procédé d'auto-paramétrage des conditions de charge d'une batterie d'accumulateurs électrochimiques, notamment une batterie lithium, ladite batterie étant connectée à une source d'alimentation apte à la charger, comprenant :la détection d'au moins un point p d'inflexion dans la courbe de tension de charge de la batterie U<sub>bat</sub> fonction du taux de charge électrique exprimé en pourcentage de la capacité C de la batterie ;pour chaque point p d'inflexion détecté, une déconnexion de la batterie de sa source d'alimentation pendant une période de relaxation prédéterminée ;à l'issue de ladite période de relaxation, la mémorisation de la tension à vide U<sub>xR</sub> de la batterie pour chacun des points d'inflexion, ladite tension à vide U<sub>xR</sub> constituant un marqueur d'un niveau de charge intermédiaire utilisable comme seuil d'arrêt de charge au cours de la charge d'une batterie.
Nº publicación: EP4593100A1 30/07/2025
Applicant:
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
Absstract of: EP4593100A1
A positive electrode active material includes core particles including lithium cobalt-based composite oxide; and a coating layer located on a surface of the core particles and including a lithium iron phosphate-based compound and aluminium. The positive electrode active material according to some embodiments has long cycle-life characteristics and improved stability even at high voltage. When the positive electrode active material is applied to a rechargeable lithium battery, suitably high initial charge/discharge capacity and efficiency may be achieved under high-voltage operating conditions, and suitably long cycle-life characteristics may be achieved under high-voltage and high-temperature conditions.
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