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METHOD AND SYSTEM FOR OPTIMAL CHARGING PROCESS OF LITHIUM-ION BATTERIES TO MITIGATE CELL DEGRADATION IN REAL TIME

Resumen de: US2025266703A1

A method and system for optimizing the charging process of lithium-ion batteries by utilizing a determined parameter (e.g., Lyapunov Exponent) as a cell degradation (e.g., anode overpotential) indicator are disclosed. The system and method enable intelligent charging, which may involve integrating a controller that adjusts the charging current in real-time (or near real time or otherwise) based on the cell degradation indicator, calculated from probing the battery. This approach has various possible benefits to which the method and system may be tuned including extending battery lifespan, charge timing, and safety.

BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS

Resumen de: US2025266589A1

A battery cell, a battery, and an electrical device are disclosed. The battery cell comprises: a casing assembly, comprising a casing and a first pole, the first pole comprising a pole body and a first cover plate, the pole body being mounted in the casing, and the first cover plate being arranged on the pole body; and a cell assembly, comprising an active material coating portion and a conductive portion connected to the active material coating portion, the active material coating portion being accommodated in the casing, and the conductive portion being connected to the pole body by means of a first welding portion. The first welding portion is at least partially located on the side of the pole body away from the active material coating portion, and the first cover plate is used for shielding the first welding portion.

RECHARGEABLE BATTERY AND ELECTRODE ASSEMBLY THEREOF

Resumen de: US2025266508A1

An electrode assembly includes a first electrode, a first separator on the first electrode, a second electrode on the first separator, the second electrode including an outer uncoated portion, a second separator on the second electrode, the first electrode, the first separator, the second electrode, and the second separator being wound into a jelly roll shape, and the outer uncoated portion of the second electrode being at an outermost turn of the jelly roll shape, and a swelling tape attached to at least one of opposite surfaces of the outer uncoated portion of the second electrode, the swelling tape including swelling particles.

AQUEOUS BATTERY

Resumen de: US2025266504A1

To suppress the electrolysis of an aqueous electrolyte solution on a negative electrode surface when an aqueous potassium ion battery is being charged/discharged. SOLUTION: An aqueous electrolyte solution comprises potassium pyrophosphate which is dissolved at a concentration of 2 mol or more per one kg of water. It is assumed as to the aqueous electrolyte solution that a pyrophosphate ion is decomposed on a negative electrode surface and then a coating is formed on a high-work function portion of the negative electrode surface when a battery is being charged/discharged. As a result, the direct contact of the aqueous electrolyte solution and the negative electrode surface is suppressed and when the battery is being charged/discharged, the electrolysis of the aqueous electrolyte solution on the negative electrode surface is suppressed. SELECTED DRAWING: FIG. 3

ELEMENTAL METAL AND CARBON MIXTURES FOR ENERGY STORAGE DEVICES

Resumen de: US2025266430A1

An energy storage device can include a first electrode, a second electrode and a separator between the first electrode and the second electrode wherein the first electrode or the second electrode includes elemental lithium metal and carbon particles. A method for fabricating an energy storage device can include forming a first electrode and a second electrode, and inserting a separator between the first electrode and the second electrode, where forming the first electrode or the second electrode can include combining elemental lithium metal and a plurality of carbon particles.

ELECTROLYTE SOLUTION AND BATTERY

Resumen de: US2025266503A1

The present disclosure relates to an electrolyte solution and a battery. The electrolyte solution comprising a first salt, a second salt, and a SO2, wherein the first salt is a LiAl halide salt comprising at least a LiAlCl4, and the second salt is an ionic liquid comprising a sulfonyl group, thereby solving the above problem.

BATTERY SAFETY EVALUATION DEVICE

Resumen de: US2025266515A1

Battery safety evaluation devices are provided. The battery safety evaluation devices may comprise: a mounting plate, the mounting plate comprising an upper surface for affixing a battery thereto; a chamber unit, the chamber unit comprising a battery accommodation space for accommodating the mounting plate; a plurality of temperature sensor units in the battery accommodation space; and a temperature analysis unit for receiving temperature measurement signals periodically from the plurality of temperature sensor units, wherein the plurality of temperature sensor units are spaced apart from each other within the battery accommodation space.

POWER STORAGE DEVICE

Resumen de: US2025266568A1

A power storage device includes: a first power storage cell and a second power storage cell disposed side by side in a first direction; and a cross member extending along a second direction perpendicular to the first direction and disposed in a gap between the first power storage cell and the second power storage cell. The first power storage cell includes a first side wall portion facing the cross member. The first side wall portion is provided with a first exhaust valve. The cross member is provided with a hollow portion, and is provided with a first opening such that the first opening faces the first side wall portion. The cross member is provided with a communicating portion that allows the hollow portion and a space around the cross member to communicate with each other. The communicating portion is provided at a position not facing the first exhaust valve.

POWER STORAGE ELEMENT

Resumen de: WO2025173426A1

A power storage element according to one aspect of the present invention has a laminate structure provided with a positive electrode base material, a positive electrode active material layer, a solid electrolyte layer, a negative electrode active material layer, and a negative electrode base material in the stated order, and comprises a negative electrode tab connected to the negative electrode base material. The negative electrode active material layer contains at least one negative electrode active material selected from the group consisting of metallic lithium and substances alloyed with elemental lithium. An electrically insulating inorganic member is arranged on a side surface at a portion where the positive electrode active material layer faces the negative electrode active material layer with the solid electrolyte layer interposed therebetween, among the side surfaces of the positive electrode active material layer. The positive electrode active material layer and the electrically insulating inorganic member are both laminated on the same surface of the positive electrode base material. A portion where the electrically insulating inorganic member and the negative electrode tab overlap is present when viewed in the lamination direction. The overlapping portion is provided with a fixing member that covers at least part of the negative electrode tab, thereby fixing the negative electrode tab.

ESTIMATION METHOD, ESTIMATION APPARATUS, AND COMPUTER PROGRAM

Resumen de: WO2025173451A1

This estimation method involves: acquiring measurement data including the voltage of a power storage element and the current flowing in the power storage element; estimating, on the basis of the acquired measurement data and by applying a state estimator, a parameter related to a polarization component of an equivalent circuit model including an RC parallel circuit; and estimating the voltage of a polarization component of the power storage element at a specific time point by using the estimated parameter.

COOLING HEAT EXCHANGER

Resumen de: WO2025173410A1

Provided is a cooling heat exchanger, which has a new structure and is capable of more efficiently exhibiting cooling performance.　A cooling heat exchanger 10 has formed therein a cooling flow passage 36, through which a cooling heat medium flows, and cools a cooling target 52 superposed on a cooling surface 16. The cooling flow passage 36 is composed of a plurality of flow passage parts 40 extending adjoiningly in parallel, and is provided with a parallel flow passage part 38 in which the heat medium-flowing directions in the flow passage parts 40 are the same. A plurality of projections 42 which disturb the flowing of the heat medium are formed in the parallel flow passage part 38. Regions in which the actions of disturbing the flowing of the heat medium by the projections 42 are different from each other are set in the parallel flow passage part 38.

THERMAL MANAGEMENT SYSTEM, BATTERY PACK, AND VEHICLE

Resumen de: WO2025171742A1

A thermal management system, a battery pack, and a vehicle. The thermal management system comprises a liquid intake manifold (10), a liquid output manifold (20) and at least two liquid-cooling plates (30), wherein a main liquid inlet (11) and at least two liquid inlets (121) are spaced apart on the liquid intake manifold (10) in sequence; a main liquid outlet (21) and at least two liquid outlets (221) are spaced apart on the liquid output manifold (20) in sequence; and the at least two liquid-cooling plates (30) are spaced apart in a preset direction, and the liquid inlets (121), the liquid-cooling plates (30) and the liquid outlets (221) correspond to each other on a one-to-one basis and are in communication with each other in sequence. The thermal management system comprises at least one of the following configurations: the cross-sectional area of the liquid inlet (121) close to the main liquid inlet (11) is smaller than the cross-sectional area of the liquid inlet (121) away from the main liquid inlet (11); alternatively, the liquid flow space of the liquid-cooling plate (30) close to the main liquid inlet (11) is smaller than the liquid flow space of the liquid-cooling plate (30) away from the main liquid inlet (11).

SECONDARY BATTERY

Resumen de: US2025266593A1

This secondary battery includes an insulating sheet that covers an electrode assembly, the electrode assembly includes a first surface, the insulating sheet includes a first region constituted of a vicinity of one end portion of the insulating sheet and a second region constituted of a vicinity of the other end portion of the insulating sheet, the first region and the second region cover the first surface, and an overlapping region in which the second region overlaps with the first region is provided, in a width direction of the electrode assembly, the overlapping region includes a central region and an end-portion region located beside each of both sides of the central region, and the central region is provided with a recess as a non-overlapping region that reduces an overlapping area of the overlapping region.

PORTABLE POWER SOURCE

Resumen de: US2025266700A1

An apparatus for defining an AC power source having a predetermined amperage rating and for use with a pallet truck or fork lift lifting device. The apparatus includes a pair of terminal banks, a battery, a converter adapted to change DC to AC power, a relay, a controller, and a base adapted for engagement by the lifting device for transport of the apparatus. The apparatus is shaped so that it can be transported by the lifting device through a doorway. A pair of terminal banks, battery, converter, relay and controller are coupled to one another and configured for selective operation in a standalone configuration or a stacked configuration.

SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: EP4604252A1

The present application provides a secondary battery. The secondary battery comprises: a negative electrode sheet and an electrolyte; the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network cross-linked pore structure; the electrolyte comprises a first component, and the first component comprises a cyclic functional group containing a sulfate or sulfonate group. By means of coordination between the three-dimensional network cross-linked pore structure of the silicon-carbon composite material and the first component in the electrolyte, the volume effect of an active material in a charging-discharging process is inhibited, the interface stability is improved, and a cycle capacity retention rate and a high-temperature storage capacity retention rate of the battery are improved.

SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: EP4604251A1

Provided in the present application is a secondary battery. The secondary battery comprises: a negative electrode sheet and an electrolyte, wherein the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network crosslinked pore structure; and the electrolyte comprises a first component, the first component comprising one or more of compounds as shown in formula I or formula II. By means of the cooperation of the three-dimensional network crosslinked pore structure of the silicon-carbon composite material and the first component in the electrolyte, proton hydrogen in the electrolyte and an interface is effectively removed, such that damage caused by the proton hydrogen to an interface structure is inhibited, the interface stability is improved, an increase in direct-current internal resistance (DCR) during a circulation process is reduced, and the cycle life of the battery is prolonged.

MATERIAL FOR FORMING ALL-SOLID-STATE LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, AND ALL-SOLID-STATE LITHIUM ION SECONDARY BATTERY

Resumen de: EP4604198A1

The present invention addresses the problem of controlling, as uniformly as possible, the size of amorphous silicon blocks that are spontaneously and non-uniformly generated when LiB is charged and discharged using silicon as a negative electrode active material. The present invention relates to a material for forming an all-solid-state lithium ion secondary battery negative electrode having, on a negative electrode current collector, a negative electrode active material layer in which: island-shaped convex parts made of a composition for forming an all-solid-state lithium ion secondary battery negative electrode containing silicon crystals having an average particle diameter of 0.5-5.0 µm are formed in a pattern at intervals; and a connection layer made of the composition for forming an all-solid-state lithium ion secondary battery negative electrode is formed to be continuous with the island-shaped convex parts, on the bottom surface of groove sections formed between the island-shaped convex parts. With regard to a negative electrode obtained by using said negative electrode forming material, dense and uniformly shaped blocks are formed by fusing the active materials after charging and discharging.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4604239A1

Provided is a non-aqueous electrolyte secondary battery provided with: a non-aqueous electrolytic liquid containing a sulfonylimide compound represented by General Formula (1) as an electrolyte salt and a carbonate-based solvent as an electrolyte solvent; a negative electrode containing, as a negative electrode active material, graphite having a peak area ratio (D/G ratio) of a D-band and a G-band analyzed by Raman spectroscopy of 0.7 or less, or graphite having a full-width at half-maximum of the G-band analyzed by Raman spectroscopy of 28 cm^-1 or less; and a positive electrode. (1): LiN(RSO₂)(FSO₂) (where R represents a fluorine atom, an alkyl group having 1-6 carbon atoms, or a fluoroalkyl group having 1-6 carbon atoms)

Method and apparatus for determining a virtual sensor measurement for a thermal management system of an electric vehicle

Resumen de: GB2638133A

There is provided a method of determining a virtual sensor measurement for a reconfigurable thermal management system of an electric vehicle. The method comprises obtaining a plurality of virtual sensor models 602 with each virtual sensor model operable to determine a virtual sensor measurement based on at least one sensor measurement value. Each virtual sensor model is associated with a configuration of the thermal management system and capable of receiving an indication of a configuration of the thermal management system 604, receiving a sensor signal 606 indicating a sensor measurement value and selecting a virtual sensor model of the plurality of virtual sensor models based on the indication of the configuration of the thermal management system 608. A virtual sensor measurement value is then determined 610 based on the selected virtual sensor model and the received sensor signal, and a signal representative of the virtual sensor measurement value is output 612. A control system comprising processors configured to perform the method is also claimed. A vehicle comprising the control system is also claimed.

SECONDARY BATTERY AND ELECTRICAL APPARATUS

Resumen de: EP4604242A1

The present application provides a secondary battery. The secondary battery comprises a negative electrode sheet and an electrolyte; the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network cross-linked pore structure; the electrolyte contains a first component, the first component containing at least one of compounds represented by formula I and formula II. The cooperation of the three-dimensional network cross-linked pore structure of the silicon-carbon composite material and the first component of the electrolyte inhibits the volume effect of active materials during charge-discharge processes, and improves the initial coulombic efficiency and the cycle stability of batteries.

POSITIVE ELECTRODE SHEET AND MANUFACTURING METHOD THEREFOR, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4604203A1

The present application provides a positive electrode plate and a manufacturing method therefor, a battery cell, a battery, and an electrical apparatus. The positive electrode plate comprises a current collector, a first positive electrode active material layer, and a second positive electrode active material layer; the first positive electrode active material layer is arranged on at least one side of the current collector, and the second positive electrode active material layer is arranged on the first positive electrode active material layer; the first positive electrode active material layer comprises a first positive electrode active material, the second positive electrode active material layer comprises a second positive electrode active material, the first positive electrode active material comprises a lithium-containing phosphate of olivine structure, and the second positive electrode active material comprises a cobalt-containing lithium metal oxide. The positive electrode plate can effectively improve the influence of the concentration polarization of a battery on the performance of the battery, thereby helping to improve the capacity and cycle performance of the battery.

Carbon buffer layer for a battery cell

Resumen de: GB2638223A

A method for manufacturing a battery cell 16 comprises applying a carbon buffer layer 10 to a surface 13 of a current collector 24 as a coating process, wherein the current collector is an anode 22; and comprising interposing an electrolyte 12 between a cathode 14 and the anode, wherein the electrolyte is a solid electrolyte separator. A battery cell for a battery module manufactured according to the method is also claimed. The carbon buffer layer may be deposited on the current collector by Atomic Layer Deposition (ALD) or Physical Vapour Deposition (PVD). The carbon buffer layer may comprise carbon and a metal, preferably in the form of a Li-eutectic alloy, and may be amorphous. The carbon buffer layer is stated to enhance efficiency, reliability and lifespan of the battery cell by ensuring that lithium ions are deposited on the current collector uniformly by facilitating even distribution of the lithium ions.

BATTERY DIAGNOSIS APPARATUS AND OPERATION METHOD THEREOF

Resumen de: EP4603855A1

A battery diagnosis apparatus according to an embodiment disclosed herein includes an obtaining unit configured to obtain first voltage values of each of a plurality of battery units, an identifying unit configured to identify second voltage values in different idle periods from among the first voltage values, a determining unit configured to determine average voltage values of the different idle periods of each of the plurality of battery units, based on the second voltage values, and a diagnosing unit configured to diagnose an abnormality of each of the plurality of battery units, based on at least one deviation value among the average voltage values.

BATTERY CELL AND ASSEMBLY OF SUCH CELLS

Resumen de: EP4604261A1

L'invention concerne un ensemble (1) de cellules (10) d'une batterie, l'ensemble (1) comprenant une pluralité de cellules (10) configurées pour être accolées successivement deux à deux suivant un axe d'assemblage (A) dans une position assemblée de l'ensemble (1) de cellules (10), chaque cellule (10) comprenant : un boitier (100) comprenant au moins une première et une deuxième parois latérales (103A, 103B) s'étendant parallèlement entre elles et orthogonalement à l'axe d'assemblage (A) dans la position assemblée ; un premier terminal (11) et un deuxième terminal (12) ; l'ensemble de cellules (1) étant caractérisé en ce qu'il comprend un circuit de surveillance (200) configuré pour détecter au moins une donnée prédéterminée de chaque cellule (10) de l'ensemble de cellules (1), le circuit de surveillance (200) comprenant une pluralité de languettes d'interconnexion (210), chaque languette d'interconnexion (210) étant destinée à recouvrir, au moins en partie, au moins un terminal (11) de l'une des cellules de chaque paire de cellules adjacentes.

BATTERY MATERIAL, POSITIVE ELECTRODE, AND BATTERY

Nº publicación: EP4604238A1 20/08/2025

Solicitante:

SUMITOMO CHEMICAL CO [JP]
Sumitomo Chemical Company, Limited

Resumen de: EP4604238A1

A battery material containing a solid electrolyte material and an ionic liquid, in which the solid electrolyte material contains an alkali metal element, a metal element or metalloid element except the alkali metal element, and a halogen element, and the ionic liquid contains an alkali metal ion as a cation.