Resumen de: US2025279493A1
A heat exchange system has an inlet branch adapted to receive a heat exchange liquid, supplied by a first pump and cooled by a chiller, and an outlet branch which circulates the heat exchange liquid to the chiller. The system has a cooling line, which extends from the inlet branch to the outlet branch along a vehicle battery for cooling this battery, and a branch line, which extends along a thermal reservoir containing a material with characteristics such as to store heat/cold and is configured in such a way as to exchange heat between said material and the heat exchange liquid. The system has at least one valve which is configured and controllable to achieve a first operating condition, in which the liquid flows exclusively in the cooling line, and a second operating condition, in which the liquid flows in the branch line and, in series, in the cooling line.
Resumen de: US2025279422A1
The present invention relates to a positive electrode active material, wherein it relates to a positive electrode active material including a lithium composite transition metal oxide in a form of a single particle; and a coating portion containing cobalt which is formed on the lithium composite transition metal oxide in the form of a single particle, wherein the coating portion containing cobalt has a phase gradient from a spinel structure to a layered structure in a central direction from a surface of the positive electrode active material, a preparation method thereof, and a lithium secondary battery including the positive electrode active material.
Resumen de: US2025279494A1
A traction battery pack assembly includes a plurality of battery cell groups disposed along a cell stack axis of a cell stack. Each of the battery cell groups includes at least one battery cell. A plurality of liquid guides are configured to guide a liquid coolant axially between the battery cell groups. The battery cell groups are separated from each other by at least some of the liquid guides within the plurality of liquid guides.
Resumen de: US2025279419A1
A lithium metal negative electrode incorporates a solid-electrolyte interphase (SEI) with distinct inorganic and organic layers, alongside an electrolyte containing a specialized additive. The inorganic layer, close to the lithium metal, may contain Li—F and Si—F bonds, while the organic layer may include carbon- and oxygen-containing CxOy or Si—C. The additive is defined by formulas involving a metal positive ion, Si, and trimethylsilyl groups, and may enhance cycling stability by forming a uniform SEI that suppresses lithium dendrite formation. When combined with an ether-based solvent, the additive can be present in amounts from about 0.1 to about 50 parts by weight of the electrolyte. The resulting battery exhibits high coulombic efficiency, reduced overvoltage, and retains at least 80% of its initial capacity after 100 charge-discharge cycles at a rate of 1C or higher, thus offering improved performance and longevity for lithium secondary battery applications.
Resumen de: US2025279420A1
A lithium-ion battery includes an anode including graphite and a cathode nickel in a mole percent of about 60 percent or more, based on the total composition of the cathode. The lithium-ion battery includes liquid electrolyte including one or both of ethyl methyl carbonate and ethylene carbonate and an oxidant that is soluble in the liquid electrolyte and binds with an alkene having between 2 and 4 carbon atoms.
Resumen de: US2025279479A1
Provided are a battery cell, a battery, and a power consuming device. The battery cell includes: an electrode assembly, where the electrode assembly includes a positive electrode plate and a negative electrode plate; and an electrolyte solution, where the electrolyte solution includes a first electrolyte salt, and a molecular formula of the first electrolyte salt is:where R1 is one of Li, Na, K, Mg, and Al, R2 is at least one of element O, element S, element F, and C1-C3 alkyl or C1-C3 alkyl substituted with element F, and based on 100 parts by weight of the electrolyte solution, content W1 of the first electrolyte salt ranges from 2 parts by weight to 20 parts by weight. According to the technical solution of this application, energy density and safety performance of the battery can be improved.
Resumen de: US2025279531A1
A battery comprises a battery case, a pressure relief mechanism, and a first negative pressure mechanism. The pressure relief mechanism is arranged at a wall portion of the battery case, and the pressure relief mechanism is used for relieving the internal pressure of the battery case when the internal pressure or temperature of the battery case reaches a threshold value. The first negative pressure mechanism is connected to the pressure relief mechanism, and the first negative pressure mechanism is used for generating a negative pressure, so as to direct gas in the battery case to move towards the pressure relief mechanism.
Resumen de: US2025279478A1
To provide a composite, a sheet, an electrochemical element, and a power storage device, ensuring electrical conductivity. A composite includes a metal oxide and an ester-type solvent in which an electrolyte salt is dissolved, in which an ionic liquid attaches to the surface of the metal oxide. A sheet contains the composite. An electrochemical element contains the composite. A power storage device includes a positive electrode layer, a negative electrode layer, and a separator which isolates the positive electrode layer from the negative electrode layer, and contains the composite.
Resumen de: US2025279535A1
A battery cell includes a shell, an electrode assembly, and a pressure relief mechanism, a battery, and an electrical device. The electrode assembly includes a main body part and a tab. The shell includes a first wall part and a second wall part. Along a second direction, the first wall part and the second wall part are arranged opposite to each other. A channel gap is formed between the second wall part and the main body part. The channel gap is configured to connect spaces in the shell that are located at both ends of the main body part along the first direction. The second direction intersects with the first direction. The pressure relief mechanism is arranged on the first wall part, and along the first direction, a center of the pressure relief mechanism deviates from a center of the first wall part.
Resumen de: US2025279521A1
A suppression system for a traction battery pack includes an enclosure, and a battery array within the enclosure. The battery array includes a plurality of battery cells. The suppression system further includes at least one pad within the enclosure. The at least one pad includes one or more combustion suppressing materials.
Resumen de: US2025276338A1
The present disclosure discloses a coating device. The coating device includes a coating roller, a scraping roller, and a blocking assembly. The scraping roller and the coating roller are arranged side by side, and a gap is provided between the scraping roller and the coating roller to allow a slurry to pass through. The blocking assembly is arranged at an outer side of the coating roller and an outer side of the scraping roller. The blocking assembly includes a support and a blocker mounted at the support. The blocker includes a cooperation portion cooperating with the coating roller and an engagement portion cooperating with the scraping roller. A first end of the cooperation portion and a first end of the engagement portion are connected and form an angle portion. The angle portion extends into the gap.
Resumen de: US2025276341A1
A method for coating a glue on a water-cooling plate comprises acquiring a first image and a second image comprising the water-cooling plate; determining a deviation between a placement position and a preset position of the water-cooling plate based on the first image and the second image; regulating a glue coating trajectory based on the deviation between the placement position and the preset position of the water-cooling plate; and coating the glue on the water-cooling plate based on the regulated glue coating trajectory.
Resumen de: US2025278536A1
The present invention relates to a modeling method for a thermal runaway-electrochemical coupling model for a change in state of charge of a lithium-ion battery during charging and discharging, and belongs to the technical field of safety of lithium-ion batteries. The method includes the following steps: S1: establishing a three-dimensional thermal runaway model of the battery under different states of charge; S21: assembling half-cells of battery cathode and anode materials; S22: testing equilibrium potentials and entropy thermal coefficients of a cathode and an anode; S23: acquiring a heat transfer coefficient between a battery surface and an ambient temperature; S24: measuring temperature and voltage change curves of the battery; S25: establishing an electrochemical model plugging electrochemical parameters into the model to obtain simulation results, and comparing the simulation results with real experimental results; and S3: making the temperatures in the electrochemical model to be consistent with an average temperature in the three-dimensional thermal runaway model under different states of charge for coupling, and setting restriction conditions after coupling. The method can achieve coupling of the thermal runaway model for the change in state of charge and electrochemistry, and can explore the thermal runaway phenomenon of batteries more comprehensively.
Resumen de: US2025275658A1
An attachment for a vacuum cleaner includes a head, a brush roll, an electric motor, and an attachment conduit. The head includes a suction opening, a brush roll cavity, and a battery cavity defined therein. The brush roll cavity is in fluid communication with the suction opening. The battery cavity has an elongate shape and a first longitudinal axis. The brush roll is rotatably coupled to the head. A majority of the brush roll is disposed within the brush roll cavity. The brush roll is rotatable about a rotational axis. The electric motor is disposed within the head. The electric motor drives the brush roll. The attachment conduit is in fluid communication with the suction opening. The attachment conduit is coupled to the head and has a second longitudinal axis. Each of the first longitudinal axis and the second longitudinal axis is angled relative to the rotational axis.
Resumen de: US2025279421A1
The present disclosure relates to a secondary battery including a positive electrode, a negative electrode, a separator disposed between the negative electrode and the positive electrode, and an electrolyte. The positive electrode includes a positive electrode active material comprising a lithium cobalt-based oxide particles and a metal with which the lithium cobalt-based oxide particles are doped or coated. The metal includes aluminum (Al), magnesium (Mg), titanium (Ti), and zirconium (Zr). The metal includes titanium (Ti) and zirconium (Zr) in an amount of 300 ppm to 1,500 ppm with respect to a weight of the positive electrode active material, the metal includes aluminum (Al) in an amount of 3,000 ppm to 7,000 ppm with respect to a weight of the positive electrode active material, and the negative electrode includes a carbon-based active material and a silicon-based active material.
Resumen de: US2025279432A1
An electrode plate for rechargeable lithium batteries and a rechargeable lithium battery including the same are disclosed. The electrode plate for rechargeable lithium batteries includes a current collector and an active material layer on the current collector, wherein the active material layer includes an active material; and a crosslinked product of a binder and a crosslinking agent. The binder includes a polyimide based binder, and the crosslinking agent includes at least one of a diamine based compound, an amino alcohol based compound, and a dialcohol based compound.
Resumen de: US2025279489A1
Described are remote command-enabled battery modules and systems and methods incorporating them.
Resumen de: US2025279490A1
A battery pack, which includes a pack connector having a simple structure and effectively preventing the inflow and outflow of noise. The battery pack includes a cell assembly having at least one secondary battery; a battery control unit configured to control a charging and discharging operation of the cell assembly; a pack case configured to accommodate the cell assembly and the battery control unit in an inner space thereof; and a pack connector connected to the battery control unit through a control cable and including a connection port provided to at least one side of the pack case to be exposed out for the connection with a connecting terminal of an external device and a filtering member embedded therein to filter noise on an electric path between the connection port and the control cable.
Resumen de: US2025279484A1
Provided is a high-density electrode and a method of manufacturing the same. An electrode for a secondary battery includes an electrode current collector, and an electrode active material layer formed on at least one surface of the electrode current collector. The electrode active material layer includes an H1 region, an H2 region and an H3 region sequentially provided from an end of the electrode active material layer toward a center. The H2 region includes an inclined section in which a thickness increases from the H1 region toward the H3 region, and the electrode satisfies the following formulas (1) and (2), 0.2≤h1/h2≤0.7 . . . (1), h2/h3≥0.9 . . . (2), where h1 is an average thickness of the H1 region, h2 is an average thickness of the H2 region, and h3 is an average thickness of the H3 region.
Resumen de: US2025279517A1
A harness isolation plate assembly mechanism and a battery production line are disclosed. The harness isolation plate assembly mechanism includes: a suction tool including a first bracket and a suction assembly; where the first bracket is provided with a first connection structure being configured to connect to a transport device to move the first bracket, and an extension surface of the first bracket being parallel to an extension surface of a harness isolation plate to be grabbed; and the suction assembly is fixed on the extension surface of the first bracket and arranged to avoid a harness region of the harness isolation plate, and the suction assembly is configured to adsorb or release the harness isolation plate. The harness isolation plate assembly mechanism can avoid low-strength regions on the harness isolation plate and disperse a force on the harness isolation plate, achieving damage-free assembly of the harness isolation plate.
Resumen de: US2025279477A1
Provided are a non-aqueous electrolyte, a secondary battery, and an electrical apparatus. The non-aqueous electrolyte comprises an additive, the additive comprising a cyclic sulfate ester compound having the structure shown in general formula (I), wherein R1, R2, R3, R4, R5, and R6 are each independently selected from any one of: a group having the structure shown in general formula (II), a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 haloalkyl group, a C1-C6 alkoxy group, a C1-C6 haloalkoxy group, a C2-C6 alkenyl group, a C2-C6 ester group, a cyano group, and a sulfonic acid group, where n1, n2 and n3 are each independently any integer 0-2.
Resumen de: US2025279516A1
The electrochemical apparatus includes a battery cell, a packaging bag, and a sealing piece. The battery cell is disposed in the packaging bag, and a tab of the battery cell protrudes from a sealing edge of the packaging bag. The sealing piece is disposed on both side of the tab, a top edge of the sealing piece is located outside the packaging bag, and a bottom edge is located inside the packaging bag. The top edge includes a first section, and a second section and a third section located at two ends of the first section. A length of the first section is A, a length of the bottom edge is B, and a width of the tab is C, meeting B>A≥C. A height of the second section or the third section is H, meeting 0.05 mm≤H≤0.5 mm.
Resumen de: US2025279471A1
The present invention provides a polymer electrolyte which is not susceptible to strength decrease even in a high temperature range and has high ion conductivity at room temperature and lower temperatures even if a liquid electrolyte is not contained therein. This polymer electrolyte contains a polymer which has a specific polyether structure having a free end, a specific crosslinked structure by means of a polyether and a specific nitrogen-containing aromatic cationic group; this polymer electrolyte additionally contains a lithium salt; and the volume swelling ratio of this polymer electrolyte is 40% to 120% as determined by a methyl ethyl ketone immersion method.
Resumen de: US2025277860A1
A method for capacity calculation of a battery module includes: acquire the historical charge and discharge parameters of each battery in the battery module, select a reference battery that meet preset charge and discharge conditions, and obtain remaining batteries in the battery module; obtain relative capacity of each remaining battery relative to the reference battery; determine batteries that meet the preset capacity conditions based on the relative capacities as target capacities; obtain increasable capacity of the battery module based on the target capacities. The calculation of the increasable capacity of the battery module is performed before the battery module is recharged, so that the operation and maintenance personnel can know whether the battery module needs to be recharged and whether the capacity of the battery module after recharging has increased, which optimizes recharge process, improves recharge efficiency, and improves operation and maintenance efficiency.
Nº publicación: US2025277869A1 04/09/2025
Solicitante:
GM GLOBAL TECH OPERATIONS LLC [US]
GM Global Technology Operations LLC
Resumen de: US2025277869A1
A vehicle includes a system that performs a method for operating the vehicle. A processor obtains an initial voltage fade state of a battery of the vehicle and a model of an initial state of the battery of the vehicle, commences a charging operation of the battery, measure a terminal voltage of the battery while charging, updates the model during the charging operation using the terminal voltage, ends the charging operation, obtains measurements of a cathode voltage after the charging operation has ended, determines a maximum cathode voltage from the measurements, determines an updated voltage fade state of the battery based on the maximum cathode voltage, selects a relation between cathode voltage and lithiation state based on the updated voltage fade state, calculates a state of lithiation of a cathode from the maximum cathode voltage using the selected relation, and operates the vehicle based on the updated voltage fade state.