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COPPER FOIL, CURRENT COLLECTOR AND LITHIUM ION SECONDARY BATTERY

Resumen de: US2025300189A1

Provided is a copper foil, including 2 ppm to 21 ppm silver, 0.5 ppm to 5.5 ppm titanium, and 2 ppm to 80 ppm sulfur, wherein an orientation index of (220) surface of the copper foil is from 2.05 to 3.08. Also provided are a current collector for a lithium ion secondary battery and a lithium ion secondary battery.

NICKEL-PLATED STEEL SHEET AND METHOD FOR PRODUCING SAME

Resumen de: US2025297399A1

An object is to provide a nickel-plated steel sheet where both the adhesiveness of a plated layer to a substrate and the adhesiveness of the plated layer to another member are ensured and that has a reduced total thickness including a roughened layer. This is solved by means of a nickel-plated steel sheet having a substrate made of a steel sheet, a roughened nickel layer provided on the substrate, and an iron-nickel alloy layer provided between the substrate and the roughened nickel layer.

HIGH HEAT-RESISTANT ANTIOXIDANT SOLUTIONS FOR LITHIUM BATTERY COPPER FOIL

Resumen de: US2025297397A1

The invention provides a high heat-resistant antioxidant solution for lithium battery copper foil, including hexavalent chromium and organic compounds containing heteroatoms, and the heteroatoms include N, O, S or P.

Determination of Inhomogeneities During Electrode Manufacturing for Battery Cells

Resumen de: US2025297964A1

Various embodiments of the teachings herein include an apparatus for hyperspectral imaging of electrode webs during electrode manufacturing for battery cells. An example includes: a hyperspectral spectroscopy unit with a line scan camera for imaging, the spectroscopy unit configured: to capture hyperspectral images of the forward-moving electrode web at a predefined location of the electrode manufacturing, to ascertain inhomogeneities of the electrode web from the images, wherein an inhomogeneity is a deviation of the chemical composition of the layers or of the particle size distribution from predefined target variables, and to ascertain and save a local position of the inhomogeneities in the longitudinal direction of the electrode web; and a deflection roll over which the electrode web is guided. The line scan camera captures the images at the position of the contact surface between the deflection roll and the electrode web.

HEAT EXCHANGE MODULE

Resumen de: US2025297816A1

A heat exchange module includes a base member having a flattened tubular shape, and a heat exchanger branched from the base member. The base member includes a flow passage that connects a first end of the base member and a second end opposite to the first end, and support posts arranged in the flow passage. The flow passage extends in a flow direction, and a direction orthogonal to the flow direction is a longitudinal direction. The support posts include a first support post and a second support post. The first support post and the second support post are separated from each other in the longitudinal direction. The first support post is separated from the second end. The second support post is separated from the first end.

NEW POLYMERS FOR BATTERY APPLICATIONS

Resumen de: US2025297061A1

New block polymers are described, as well as processes for preparing them using ring-opening polymerisation and ring-opening copolymerisation techniques. Also described are electrolytes, cathodes and batteries comprising the polymers.

PIPE JOINT UNIT

Resumen de: US2025297700A1

A pipe joint unit includes: a first joint member having a tubular pipe part penetrating a case through-hole, and a flange part extending radially outward at a position in an extending direction of the pipe part; and a second joint member that has a plate-shaped plate part provided with a plate through-hole and opposing the flange part with a case wall therebetween, and that is rotatable relative to the first joint member. The first and second joint members have a pipe mounting structure that fixes the pipe part to the case wall with a relative distance, in the extending direction between the flange part and the plate part, reduced by the first and second joint members performing relative rotation in a circumferential direction of the pipe part in a state where the flange part and the plate part oppose each other with the case wall therebetween in the extending direction.

HARD CARBON NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE PLATE AND BATTERY

Resumen de: US2025300178A1

A hard carbon negative electrode material includes a microstructure of multi-microporous layers. A most probable pore size of the micropores is 0.35 nm-1.5 nm, and a conductivity of the hard carbon negative electrode material under 63.66 Mpa is 0.3-130 S/cm. This hard carbon negative electrode material has a special ultrafine micropore structure. When applied to lithium-ion batteries, it can achieve micropore lithium insertion, allowing lithium ions to transform into clustered lithium within the microporous structure of the hard carbon negative electrode material near 0V voltage. This effectively prevents the growth of lithium dendrites while also effectively controlling the volume expansion of the negative electrode material before and after lithium insertion, thereby reducing the voltage between the positive and negative electrodes and improving high-temperature cycling.

LITHIUM-ION SECONDARY BATTERY AND ELECTRIC APPARATUS

Resumen de: US2025300229A1

A lithium-ion secondary battery includes an electrolyte, a positive electrode plate, a separator, and a negative electrode plate. The electrolyte includes a first additive and a second additive, based on a mass of the electrolyte, W1% is a mass percentages of the first additive and W2% is a mass percentages of the second additive, 0.05≤W1≤0.8 and 0.01≤W2≤4.1. The negative electrode plate includes a negative electrode current collector and a negative electrode material layer containing a negative electrode active material.

SODIUM-ION ENERGY STORAGE APPARATUS

Resumen de: US2025300217A1

A sodium-ion energy storage apparatus is provided, including: a positive electrode, a negative electrode, a separator, and an electrolyte; a positive electrode active material of the positive electrode includes Ce1-xMxO2, M is at least one metal and 0.01≤x≤0.25; and a negative electrode active material of the negative electrode includes a sodium source that generates sodium ions. The positive electrode of the present disclosure uses Ce1-xMxO2 obtained by doping CeO2 with the metal M as the positive electrode, and the capacity is increased by two to three times compared to undoping.

SURFACE-TREATED COPPER FOIL FOR LITHIUM ION SECONDARY BATTERY, AND CURRENT COLLECTOR AND LITHIUM ION SECONDARY BATTERY

Resumen de: US2025300188A1

Provided is a surface-treated copper foil for a lithium ion secondary battery, including a copper layer having a first side and an opposite second side and nickel-containing treatment layers disposed on the first side and the second side of the copper layer respectively, wherein a nickel coating amount on each side of the copper layer is ≥3.0 104 μg/dm2, and each treatment layer provides a treated surface with lightness value (L*) of color space of 30 to 60 and reduced dale height (Svk) of 0.10 to 0.65 μm. Provided also are a current collector for a lithium ion secondary battery and a lithium ion secondary battery.

IONIC POLYMER BINDER, AND PREPARATION METHOD AND USE THEREOF

Resumen de: US2025300182A1

An ionic polymer binder having a chemical structure shown in formula I or formula II is provided. An interaction between hexafluorophosphate group in the ionic polymer binder and a cathode active material could enhance bonding among the materials, improve the conductivity of lithium ions, and increase an active material loading capacity of the cathode.

BATTERY CASE

Resumen de: US2025300290A1

A battery case includes: a plurality of battery cells stacked on one another and accommodated in a battery lower case; an upper cover covering an upper portion of the stacked battery cells; at least one first bracket including a first end and a second end provided to be in contact with an upper surface of the upper cover, and a middle portion spaced apart from the upper surface of the upper cover to form an insertion space; and a battery upper case provided above the battery lower case. In particular, the battery upper case includes a second bracket provided on a lower surface thereof, and the second bracket includes a first end to be inserted in an insertion space formed between the upper surface of the upper cover and the first bracket.

BATTERY AND METHOD FOR MANUFACTURING BATTERY

Resumen de: US2025300285A1

A battery is provided and includes an electrode body including a positive electrode terminal and a negative electrode terminal; and an exterior member that houses the electrode body. The exterior member includes: a box member that has a metallic box shape including a first side part with a through hole; a plate member disposed inside the through hole to be separated from the first side part in a plan view from the first side part; and a sealing body including a resin layer in contact with each of a first contact surface of the first side part and a second contact surface of the plate member, the resin layer sealing a gap between the first side part and the plate member. Each of the first contact surface and the second contact surface has a plurality of recesses arranged in a matrix at a site overlapped with the resin layer in the plan view from the first side part. The recesses are filled with a part of the resin layer.

BATTERY PACK CASE FOR ELECTRIC VEHICLE

Resumen de: US2025300288A1

A battery pack case for an electric vehicle is provided. The battery pack includes: a lower case including an outer wall and one or more partition walls therein, each of the outer wall and the one or more partition walls including one or more gas storage devices that store gas; and an upper case connected to the lower case and including spray plates that spray gases introduced from the one or more gas storage devices. The one or more gas storage devices are integrated with the one or more partition walls and the outer wall of the lower case, and the battery pack case accommodates one or more battery modules.

BATTERY CELL HOLDER, BATTERY MODULE, AND BATTERY PACK

Resumen de: US2025300301A1

Provided is a battery cell holder including a housing portion that houses a columnar battery cell, in which the housing portion includes: a first housing portion that is a columnar space having a first diameter; and a second housing portion that is a columnar space having a second diameter smaller than the first diameter, and in which, when viewed from above, the housing portion has a shape in which an outer circumference of the first housing portion and an outer circumference of the second housing portion are partly combined with each other.

BATTERY CASE

Resumen de: US2025300306A1

A battery case includes: a first frame in which a plurality of first housing holes each capable of housing one end portion of a battery cell are formed, the battery cell having connection terminals at the one end portion; and a second frame in which a plurality of second housing holes each capable of housing the other end portion of the battery cell are formed, the second frame forming a housing chamber, using the first housing hole and the second housing hole, the housing chamber being capable of housing the battery cell, in which the second housing hole includes a positioning portion for positioning the other end portion of the battery cell in a housing direction, and the positioning portion is a protrusion portion formed to protrude toward an inside of the second housing hole over an entire circumference of a lower end portion of the second housing hole.

METHOD OF PREPARING NICKEL SULFATE SALT

Resumen de: US2025296850A1

A method of preparing a nickel sulfate salt including preparing a fooding solution including a nickel salt and an aqueous sulfuric acid solution, subjecting the feeding solution to crystallization to produce a mixed liquid containing a nickel sulfate solid. The mixed liquid is then subjected to solid-liquid separation to collect the nickel sulfate salt. The filtrate produced from the solid-liquid separation is recycled together with purging.

METAL COMPOSITE COMPOUND AND METHOD OF PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY

Resumen de: US2025296851A1

A metal composite compound is provided with which a lithium secondary battery having high initial charge and discharge efficiency can be produced. A metal composite compound containing at least Ni, in which in the metal composite compound, when in a differential pore volume distribution determined by a Barrett-Joyner-Halenda method from a nitrogen gas adsorption isotherm, an integrated area of a region where a pore diameter is 1 nm or more and 50 nm or less is A, and an integrated area of a region where the pore diameter is more than 50 nm and 200 nm or less is B, A/B is 0.05 or more and less than 1.5.

ASSISTED MULTI-BATTERY PRE-CHARGE STRATEGY

Resumen de: US2025296463A1

A computer system has processing circuitry to identify one or more electrical energy storage packs that have a voltage higher than a voltage threshold related to a voltage connection window of a target electrical energy storage pack, close the pre-charge contactor of the one or more identified electrical energy storage packs to pre-charge the voltage bus using the one or more connected electrical energy storage packs at least until the voltage of the voltage bus exceeds the voltage threshold of the target pack, open the pre-charge contactor of the one or more connected electrical energy storage packs, and close the main contactor of the target electrical energy storage pack to connect the target electrical energy storage pack to the voltage bus.

BATTERY SWAPPING STATION

Resumen de: US2025296468A1

The present application is capable of providing a battery swapping station (BSS) and a method of using the same. The present application is capable of providing a battery swapping station and a method of using the same in which the problems of communication errors caused by frequent battery replacement in a battery swapping station or the like or an emergency state can be solved by applying two types of wireless communication means using different frequency bands, and accurate and efficient confirmation and handling of the information on the emergency state are enabled.

VEHICLE

Resumen de: US2025296420A1

A vehicle includes: a vehicle body provided with a boarding space; and a power storage device disposed below the boarding space, wherein the power storage device includes one or more power storage stacks and an accommodation case that accommodates the one or more power storage stacks, the accommodation case has a lower case in which the one or more power storage stacks are disposed, and a plurality of wall portions that partition a region in which the one or more power storage stacks are disposed, a gas-discharge path through which gas discharged from the one or more power storage stacks is flowable is provided inside each of the plurality of wall portions, and a heat insulating member is disposed between each of the plurality of wall portions and the boarding space.

LITHIUM IRON PHOSPHATE/CARBON/LITHIUM-RICH LITHIUM IRON OXIDE COMPOSITE CATHODE MATERIAL AND PREPARATION METHOD AND APPLICATION THEREOF

Resumen de: US2025300169A1

A lithium iron phosphate/carbon/lithium-rich lithium iron oxide composite cathode material and a preparation method and an application thereof are provided. The preparation method includes the following steps: mixing iron salt, lithium compound, orthophosphate and an organic salt with water, to obtain a mixed slurry; performing a spray granulation on the mixed slurry, to obtain a precursor powder; and performing a heat preservation on the precursor powder in a protective atmosphere, to obtain a lithium iron phosphate/carbon/lithium-rich lithium iron oxide composite cathode material. The preparation method is based on the characteristics that electric double layer physical energy storage of porous carbon can enhance the rate, and lithium-rich lithium iron oxide additive can increase the system lithium source and prolong the service life, combined with the synthesis process of lithium iron phosphate and lithium-rich lithium iron oxide, a lithium iron phosphate/carbon/lithium-rich lithium iron oxide composite cathode material is synthesized by one-step method.

INFORMATION COLLECTION DEVICE AND BATTERY PACK

Resumen de: US2025297911A1

An information collection device includes a casing, an air pressure sensor, and a sealing member. The casing has a first installation hole, the air pressure sensor is installed inside the casing, and at least a part of the air pressure sensor is snap-fitted into the first installation hole to acquire an air pressure parameter outside the casing. The sealing member seals the first installation hole, and the sealing member is used to allow gas to pass through and prevent liquid from passing through. Thereby, the information collection device is arranged in the battery cell, enabling it to collect information in an environment of electrolyte, thus mitigating the technical problems of complex structure and insufficient reliability of the cover plate of the battery cell caused by the external arrangement of the prior art information collection device.

PROCESSES FOR PREPARING HYDROXIDES AND OXIDES OF VARIOUS METALS AND DERIVATIVES THEREOF

Nº publicación: US2025296852A1 25/09/2025

Solicitante:

NEMASKA LITHIUM INC [CA]
NEMASKA LITHIUM INC

Resumen de: US2025296852A1

There are provided processes for preparing a metal hydroxide comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium, copper, magnesium and aluminum, the process comprising:reacting a metal sulfate comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium, copper, magnesium and aluminum with lithium hydroxide, sodium hydroxide and/or potassium hydroxide and optionally a chelating agent in order to obtain a solid comprising the metal hydroxide and a liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate;separating the liquid and the solid from one another to obtain the metal hydroxide;submitting the liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate to an electromembrane process for converting the lithium sulfate, sodium sulfate and/or potassium sulfate into lithium hydroxide, sodium hydroxide and/or potassium hydroxide respectively;reusing the sodium hydroxide obtained by the electromembrane process for reacting with the metal sulfate; andreusing the lithium hydroxide obtained by the electromembrane process for reacting with the metal sulfate and/or with the metal hydroxide.