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Publicaciones de los últimos 15 días/Last 15 days publications (excluidas pubs. CN y JP /CN and JP pubs. excluded)
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BATTERY MODULE

Publication No.:  US2025140968A1 01/05/2025
Applicant: 
HYUNDAI MOTOR COMPANY [KR]
KIA CORP [KR]
HYUNDAI MOTOR COMPANY,
KIA CORPORATION
US_2025140968_PA

Absstract of: US2025140968A1

A battery module includes a battery cell including a plurality of battery cells, a cooling member located at one end of the battery cell, and a plurality of heat transfer members, each of the heat transfer members being configured to discharge heat from each of the battery cells to the cooling member. The heat transfer members include a plurality of first heat transfer parts, each of the first heat transfer parts being located along a corresponding one of one side surfaces of the respective battery cells, and a plurality of second heat transfer parts, each of the second heat transfer parts being configured to at least partially surround a corresponding one of one ends of the respective battery cells, each of the one ends being adjacent to the cooling member.

METHOD FOR PREPARING CARBON-COATED SODIUM IRON FLUOROPHOSPHATE FROM WASTE LITHIUM IRON PHOSPHATE AND APPLICATION THEREOF

Publication No.:  US2025140957A1 01/05/2025
Applicant: 
HUBEI WANRUN NEW ENERGY TECH CO LTD [CN]
HUBEI WANRUN NEW ENERGY TECHNOLOGY CO., LTD
US_2025140957_PA

Absstract of: US2025140957A1

The present disclosure relates to the field of sodium-ion battery technology, and specifically, to a method for preparing carbon-coated sodium iron fluorophosphate from waste lithium iron phosphate and the application thereof. The method for preparing carbon-coated sodium iron fluorophosphate from waste lithium iron phosphate includes: mixing a waste lithium iron phosphate material with an alkaline solution for reaction, followed by solid-liquid separation, to obtain an aluminum-containing filtrate and a lithium iron phosphate filter residue; mixing the lithium iron phosphate filter residue, aluminum chloride and sodium chloride uniformly, followed by vacuum calcination, to obtain a calcination material; and mixing the calcination material with at least one of a sodium source, an iron source and a phosphorus source uniformly to obtain a mixture to which a fluorine source, a carbon source and a solvent are added for uniformly mixing, followed by drying and calcination sequentially to obtain the carbon-coated sodium iron fluorophosphate. The method has the advantages of low costs, a high added value, a short process, and a high recovery rate, and the carbon-coated sodium iron fluorophosphate obtained from the method has excellent electrochemical performance.

Battery Module

Publication No.:  US2025140963A1 01/05/2025
Applicant: 
TICONA LLC [US]
Ticona LLC
US_2025140963_PA

Absstract of: US2025140963A1

A battery module that comprises an electrochemical cell is provided. The battery module includes a polymer composition that comprises a polymer matrix that includes a thermotropic liquid crystalline polymer and a thermally conductive filler distributed within the polymer matrix. The polymer composition exhibits an in-plane thermal conductivity of about 3 W/m-K or more as determined in accordance with ASTM E1461-13 (2022) and a deflection temperature under load of about 230° C.) or more as determined in accordance with ISO 75:2013 at a load of 1.8 MPa.

A MULTI-DIMENSIONAL ELECTRODE ARCHITECTURE BASED ELECTROCHEMICAL CELL

Publication No.:  WO2025088415A1 01/05/2025
Applicant: 
E TRNL ENERGY PRIVATE LTD [IN]
E-TRNL ENERGY PRIVATE LIMITED
WO_2025088415_PA

Absstract of: WO2025088415A1

The present invention provides a multi-dimensional electrode architecture based electrochemical cell (100) that provides higher volumetric and gravimetric energy density by eliminating the need for metallic substrates. The multi-dimensional electrode architecture based electrochemical cell comprises of a plurality of layers including but not limited to a lower current collector layer (6), an anode layer (1), a separator layer (2), a cathode layer (3), an adhesion layer (4), and an upper current collector layer (5).

POWER SYSTEM, NON-RECHARGEABLE BATTERY PACK, AND RECHARGEABLE BATTERY PACK

Publication No.:  WO2025088401A1 01/05/2025
Applicant: 
3M INNOVATIVE PROPERTIES COMPANY [US]
3M INNOVATIVE PROPERTIES COMPANY
WO_2025088401_PA

Absstract of: WO2025088401A1

A non-rechargeable battery pack for use with a device includes a non-rechargeable battery connector and a first battery pack transistor. The rechargeable battery connector is configured to detachably and electrically connect the rechargeable battery pack to the device. The non- rechargeable battery connector includes a first terminal and second terminal. The first battery pack transistor includes a first gate electrically connected to the first terminal and a first drain electrically connected to the second terminal. When the non-rechargeable battery connector is detachably and electrically connected to the device, the first gate of the first battery pack transistor is configured to receive a high voltage signal through the first terminal. Upon receiving the high voltage signal, the first battery pack transistor switches on causing the second terminal to transmit a low voltage signal to the device, such that the low voltage signal indicates that the non- rechargeable battery pack is non-rechargeable.

CHARGING CONTROL SYSTEM

Publication No.:  WO2025088459A1 01/05/2025
Applicant: 
SEMICONDUCTOR ENERGY LABORATORY CO LTD [JP]
\u682A\u5F0F\u4F1A\u793E\u534A\u5C0E\u4F53\u30A8\u30CD\u30EB\u30AE\u30FC\u7814\u7A76\u6240
WO_2025088459_PA

Absstract of: WO2025088459A1

One aspect of the present invention provides a charging control system that is capable of effectively using regenerative electric power without wasting the regenerative electric power. Generated regenerative electric power is efficiently stored in a second secondary battery and then stored in a main first secondary battery. Charging from the second secondary battery to the first secondary battery is performed via a DC-DC converter. The charge state of the first secondary battery and the charge state of the second secondary battery are controlled. When the first secondary battery is close to full charge and is likely to deteriorate, it is possible to perform charging from the first secondary battery to the second secondary battery.

METHOD AND SYSTEM FOR BALANCING BATTERY PACK OF ELECTRIC VEHICLE

Publication No.:  WO2025088588A1 01/05/2025
Applicant: 
ATHER ENERGY LTD [IN]
ATHER ENERGY LIMITED
WO_2025088588_PA

Absstract of: WO2025088588A1

The present disclosure provides a method (700) and a system (210) for balancing a battery pack (220) of an electric vehicle. The method includes simultaneously detecting (710), by a cell balancing system (210), a voltage and a current of cells in the battery pack (220), and a temperature of components of the battery pack (220). The method includes determining (720) a terminal voltage and a state of charge of the cells based on the voltage and the current of the cells. The method includes estimating (730) cell balancing duty cycles based on the terminal voltage and the state of charge of the cells, and cell balancing duty cycles based on the temperature of the components of the battery pack (220), and balancing (750) the cells based on a minimum duty cycle being estimated between the cell balancing duty cycles.

CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREOF AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Publication No.:  WO2025089934A1 01/05/2025
Applicant: 
POSCO HOLDINGS INC [KR]
\uD3EC\uC2A4\uCF54\uD640\uB529\uC2A4 \uC8FC\uC2DD\uD68C\uC0AC
WO_2025089934_PA

Absstract of: WO2025089934A1

The present invention relates to a cathode active material for a lithium secondary battery, comprising: a lithium metal oxide in a discrete-particle form; and a coating layer which is arranged on the surface of the lithium metal oxide and which contains cobalt, wherein: the coating layer is attached to the surface of the lithium metal oxide, and is in an island form including a plurality of attached particles spaced apart from each other; and the average coating rate of the coating layer is 35 to 48 area% on the basis of the total surface area of a discrete particle.

SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Publication No.:  WO2025086474A1 01/05/2025
Applicant: 
HUBEI RT ADVANCED MAT GROUP COMPANY LIMITED [CN]
\u6E56\u5317\u878D\u901A\u9AD8\u79D1\u5148\u8FDB\u6750\u6599\u96C6\u56E2\u80A1\u4EFD\u6709\u9650\u516C\u53F8
WO_2025086474_PA

Absstract of: WO2025086474A1

A sodium-ion battery positive electrode material, and a preparation method therefor and a use thereof. The chemical general formula of the sodium-ion battery positive electrode material is NamNixFeyMnzO2, wherein 0.1≤x≤0.25, 0.5≤y≤0.8, 0.1≤z≤0.25, 0.8≤m≤1.1, 0.95≤x/z≤1.05, x+y+z=1, m, x, y, and z respectively are molar percentages of corresponding elements, and components in the chemical general formula satisfy charge conservation and stoichiometry conservation. The preparation method comprises: using a co-precipitation method to prepare a precursor containing a nickel source, an iron source, and a manganese source in required stoichiometric amounts; mixing the precursor containing the nickel source, the iron source, and the manganese source with a sodium source at a specific ratio, then adding a doping element for primary sintering to obtain a doped sodium-ion battery positive electrode material; and carrying out secondary sintering on the doped sodium-ion battery positive electrode material and a coating to obtain a final sodium-ion battery positive electrode material. The sodium-ion battery positive electrode material has the advantages of high capacity, low residual alkali, and high stability.

ELECTROLYTE, SECONDARY BATTERY, AND ELECTRIC DEVICE

Publication No.:  WO2025086284A1 01/05/2025
Applicant: 
SHENZHEN INX TECH CO LTD [CN]
\u6DF1\u5733\u6B23\u754C\u80FD\u6E90\u79D1\u6280\u6709\u9650\u516C\u53F8
WO_2025086284_A1

Absstract of: WO2025086284A1

An electrolyte, a secondary battery, and an electric device. The electrolyte comprises a first fluoroether solvent and a second fluoroether solvent, wherein the number of carbon atoms in the first fluoroether solvent is greater than 4, and the number of carbon atoms in the second fluoroether solvent is not greater than 4. The electrolyte can improve the cycling stability of a battery.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Publication No.:  WO2025086481A1 01/05/2025
Applicant: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
\u5B81\u5FB7\u65F6\u4EE3\u65B0\u80FD\u6E90\u79D1\u6280\u80A1\u4EFD\u6709\u9650\u516C\u53F8
WO_2025086481_PA

Absstract of: WO2025086481A1

The present application relates to the technical field of batteries. Provided are a battery cell, a battery and an electrical device. The battery cell comprises an electrode assembly and a current collection member, the electrode assembly comprising an electrode main body and tabs provided at the ends of the electrode main body; the current collection member is provided on a tab, and part of the outer edge portion of the current collection member coincides with the outer edge portion of the tab, such that part of the tab is exposed outside. In the battery cell provided by the present application, the outline dimension of the current collection member is smaller than that of the tab, such that the current collection member does not fully cover the tab. Thus, during laser welding of the current collection member and the tab, a laser beam can be incident laterally, so as to form a small acute angle with the plane where the tab is located, thereby lowering the probability of separator damage caused by the laser beam being vertically incident on the plane where the tab is located, and improving the yield of electrode assembly manufacturing.

RECHARGEABLE ENERGY STORAGE SYSTEM LIQUID INTRUSION DETECTION AND SEVERITY DETERMINATION FOR HIGH VOLTAGE OPERATION

Publication No.:  US2025135896A1 01/05/2025
Applicant: 
GM GLOBAL TECH OPERATIONS LLC [US]
GM Global Technology Operations LLC
US_2025135896_PA

Absstract of: US2025135896A1

A vehicle includes a system performing a method of operating the vehicle. The system includes a battery pack, a sensor associated with the battery pack, a cooling system for cooling the battery pack, and a processor. The processor is configured to measure a battery pack parameter of the battery pack for an occurrence of a battery pack fault, measure a sensor parameter for the occurrence of a sensor fault in the sensor, measure a cooling system parameter of the cooling system for the occurrence of a cooling system fault, determine an ingress of a fluid into the battery pack based on the occurrence of the battery pack fault and one of the sensor fault and the cooling system fault, and perform an action based on the ingress of the fluid into the battery pack.

ROLLER AND ROLLING APPARATUS

Publication No.:  US2025135516A1 01/05/2025
Applicant: 
JIANGSU CONTEMPORARY AMPEREX TECH LIMITED [CN]
JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
US_2025135516_PA

Absstract of: US2025135516A1

A roller is configured to roll an electrode plate, and the roller includes a rolling portion and a temperature regulating assembly. A rolling surface for rolling the electrode plate is formed on an outer surface of the rolling portion, and a mounting hole is provided inside the rolling portion along an axial direction of the rolling portion. The temperature regulating assembly is provided in the mounting hole and configured to exchange heat with the rolling portion. A rolling apparatus has a first roller and a second roller. The first roller and the second roller are jointly configured to roll an electrode plate. When the rolling portion is rolling an electrode plate, the temperature regulating assembly regulates a temperature of the rolling portion along the axial direction, so as to adjust the radial deformation of the rolling portion depending on the rules of thermal expansion and contraction.

Sealed Portion Folding Apparatus and Method for Pouch-Shaped Battery Cells

Publication No.:  US2025135524A1 01/05/2025
Applicant: 
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
US_2025135524_PA

Absstract of: US2025135524A1

The present invention relates to a sealed portion folding apparatus and method for pouch-shaped battery cells, and more particularly to a sealed portion folding apparatus for pouch-shaped battery cells including a lower unit configured to allow a sealed portion to be seated thereon. The lower unit includes a lower folding block configured to perform horizontal reciprocation and upward and downward movement, an upper unit including an upper folding block configured to perform horizontal reciprocation and upward and downward movement and to press the sealed portion so as to be bent to a predetermined angle, a lower folding guide unit configured to perform upward and downward movement and to guide the sealed portion so as to be bent to a predetermined angle, and an upper folding guide unit configured to perform upward and downward movement and to guide the sealed portion so as to be bent to a predetermined angle.

PUNCHING OIL COATER AND NOTCHING APPARATUS INCLUDING THE SAME

Publication No.:  US2025135486A1 01/05/2025
Applicant: 
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
US_2025135486_PA

Absstract of: US2025135486A1

A punching oil coater includes a coating device configured to correspond to feed rollers that contact an electrode plate and move the electrode plate and are at different positions from each other, and rotate to contact and coat a pair of uncoated portions of mutually symmetrical surfaces of the electrode plate with punching oil as the feed rollers press the pair of uncoated portions against the coating device and move the electrode plate; a sprayer configured to spray the punching oil onto the coating device; a punching oil supply device configured to uniformly control a flow amount and flow rate of the punching oil supplied to the sprayer; and a coating controller configured to control a punching oil coating operation for the electrode plate.

SURFACE TREATMENT JIG

Publication No.:  US2025135481A1 01/05/2025
Applicant: 
NHK SPRING CO LTD [JP]
NHK SPRING CO., LTD
US_2025135481_PA

Absstract of: US2025135481A1

A surface treatment jig for performing surface treatment of an exterior body of an accumulator including a bottom, a shell and a port in a state where the surface treatment jig is connected to the exterior body and supports the exterior body includes: a support portion configured to support the accumulator; and a hook portion connected with the support portion. The support portion has a shape tapered near the hook portion.

LITHIUM-ION BATTERY, BATTERY, AND ELECTRIC APPARATUS

Publication No.:  US2025140941A1 01/05/2025
Applicant: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
US_2025140941_PA

Absstract of: US2025140941A1

This application relates to a lithium-ion battery, a battery, and an electric apparatus. The lithium-ion battery includes an electrolyte and a positive electrode plate. The electrolyte includes a lithium salt, where the lithium salt includes lithium hexafluorophosphate, and based on a total mass of the electrolyte, a mass proportion of the lithium hexafluorophosphate is 15% to 20%. The positive electrode plate includes a positive electrode current collector and a positive electrode film layer disposed on at least one side of the positive electrode current collector and containing a positive electrode active material. This application can improve cycling performance of the lithium-ion battery.

COMPONENT LAYOUT OF AIR COOLING COMPONENTS IN ELECTRIC WORK VEHICLE

Publication No.:  US2025140958A1 01/05/2025
Applicant: 
KUBOTA CORP [JP]
KUBOTA CORPORATION
US_2025140958_PA

Absstract of: US2025140958A1

An electric work vehicle includes a chassis, a battery housing to house a plurality of battery modules, a cooling structure mounted to a front portion of the battery housing, and an inverter. The battery housing is supported by the chassis. The cooling structure includes a fan mounted at a front portion of the cooling structure. The fan is rotated by an electric motor powered by the inverter.

A CIRCUIT MODULE FOR CONTROLLING A PLURALITY OF ENERGY CELL UNITS

Publication No.:  US2025140943A1 01/05/2025
Applicant: 
HAGAL TECH AS [NO]
HAGAL TECHNOLOGY AS
US_2025140943_PA

Absstract of: US2025140943A1

A circuit module for coupling a plurality of energy cell units is disclosed. Energy modules, energy clusters, energy systems and cascaded circuitry comprising such circuit modules are also disclosed.

COOLING DEVICE FOR AN ELECTRIC BATTERY

Publication No.:  US2025140971A1 01/05/2025
Applicant: 
HUTCHINSON [FR]
HUTCHINSON
US_2025140971_PA

Absstract of: US2025140971A1

Cooling device for a battery includes a casing formed from two sheets of flexible material, a circulation channel, an inlet orifice for fluid and an outlet orifice, and at least one fluidic connector arranged through the inlet or outlet orifice. The fluidic connector includes a base having a base plate defining a central through-opening, the base plate defining an upper face arranged against an inner face of the sheet, a tube integral with the base plate, extending through the inlet orifice or the outlet orifice and leading through the central opening, and a ring assembled on the base and circumferentially surrounding the tube, arranged to bear against an outer face of the sheet, the upper face of the base plate being fixed to the inner face of the sheet by at least one weld circumferentially surrounding the tube.

LIQUID COOLING PLATE AND BATTERY PACK

Publication No.:  US2025140969A1 01/05/2025
Applicant: 
JINKO ENERGY STORAGE TECH CO LTD [CN]
Jinko Energy Storage Technology Co., Ltd
US_2025140969_PA

Absstract of: US2025140969A1

A liquid cooling plate and a battery pack are provided. The liquid cooling plate includes a plate body and a separator. The plate body defines a cooling chamber, and the plate body is provided with a liquid inlet and a liquid outlet. The cooling chamber communicates with outside through the liquid inlet and the liquid outlet. The separator is installed to the plate body and separates the cooling chamber into cooling flow-channels, and adjacent cooling flow-channels communicate with each other. The separator is non-uniformly distributed at the plate body. Where the cooling flow-channel has a smaller flowing area, the cooling liquid flows faster, thereby increasing the flowing speed of the cooling liquid. Where the cooling flow-channel has a larger flowing area, the cooling liquid flows slower, thereby prolonging the heat exchange time of the cooling liquid and improving the uniformity of heat dissipation of the liquid cooling plate.

FRICTION STIR WELDING METHOD AND BATTERY PACK

Publication No.:  US2025140970A1 01/05/2025
Applicant: 
HONDA MOTOR CO LTD [JP]
HONDA MOTOR CO., LTD
US_2025140970_PA

Absstract of: US2025140970A1

A friction stir welding method welds at least two members to be welded by overlapping the members to be welded and moving a welding tool. The friction stir welding method has a step of forming a closed space at a terminal end of a welding line which is a movement track of the welding tool, and a step of moving the welding tool to inside the closed space and pulling out the welding tool from the members to be welded.

BATTERY

Publication No.:  WO2025088457A1 01/05/2025
Applicant: 
SEMICONDUCTOR ENERGY LABORATORY CO LTD [JP]
\u682A\u5F0F\u4F1A\u793E\u534A\u5C0E\u4F53\u30A8\u30CD\u30EB\u30AE\u30FC\u7814\u7A76\u6240
WO_2025088457_PA

Absstract of: WO2025088457A1

Provided is a novel positive electrode active material. Also provided is a battery with excellent charge and discharge characteristics. This battery has a positive electrode. The positive electrode has a positive electrode active material layer. The positive electrode active material layer has positive electrode active material particles containing magnesium, titanium, nickel, aluminum, and lithium cobalt oxide. XPS analysis of the plurality of positive electrode active material particles in the positive electrode active material layer shows a peak in the range from 850 eV to 860 eV inclusive and at a position at least 0.5 eV higher than the peak position in XPS analysis of nickel(II) oxide.

BATTERY CELL ASSEMBLY WINDING APPARATUS AND METHOD AND ELECTRODE SHEET FLY-CUTTING MECHANISM

Publication No.:  WO2025087261A1 01/05/2025
Applicant: 
TRINA STORAGE SOLUTIONS JIANGSU CO LTD [CN]
\u6C5F\u82CF\u5929\u5408\u50A8\u80FD\u6709\u9650\u516C\u53F8
WO_2025087261_PA

Absstract of: WO2025087261A1

The present invention belongs to the technical field of lithium battery manufacturing, and particularly relates to a battery cell assembly winding apparatus and method and an electrode sheet fly-cutting mechanism, solving the problem of long auxiliary time and low efficiency caused by the need of deceleration or stopping for electrode sheet or separator cutting. The battery cell assembly winding apparatus comprises a turret; a first station and a second station are arranged on the turret; winding needles are respectively arranged on the first station and the second station; two electrode sheet cutter driving rollers symmetrically arranged along an electrode sheet conveying channel are arranged at an electrode sheet feeding end of the first station; electrode sheet cutters are arranged on the electrode sheet cutter driving rollers; the electrode sheet cutters on the two electrode sheet cutter main driving rollers are arranged in a staggered manner and can be meshed with each other during the rotation of the two electrode sheet cutter driving rollers; the two electrode sheet cutter driving rollers are respectively connected to respective first translation driving mechanisms; and a separator cutting mechanism is arranged between the first station and the second station. Short auxiliary time, high winding efficiency and excellent winding effects are achieved.

BATTERY

Nº publicación: WO2025087174A1 01/05/2025

Applicant:

ZHUHAI COSMX POWER BATTERY CO LTD [CN]
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WO_2025087174_PA

Absstract of: WO2025087174A1

The present disclosure relates to the technical field of batteries, and provides a battery. The battery comprises a positive electrode sheet and a negative electrode sheet, the negative electrode sheet comprises a negative electrode current collector and a negative electrode active layer disposed on the negative electrode current collector, and a negative electrode active material in the negative electrode active layer comprises graphite and hard carbon; the positive electrode sheet comprises a positive electrode current collector and a positive electrode active layer disposed on the positive electrode current collector, a positive electrode active material in the positive electrode active layer comprises lithium iron phosphate, the battery is discharged, and a voltage and capacity curve is drawn for differentiation to obtain a differential value dV/dQ curve; dV/dQ satisfies the following condition: within the range of 25-35% SOC, the differential value dV/dQ ranges from -0.07 V/Ah to -0.01 V/Ah. The blending ratio of the hard carbon in the negative electrode active material and the differential value dV/dQ of the negative electrode active material are within a specific range, so that favorable and unfavorable factors caused by blending of the hard carbon can be balanced, and the situation of voltage decay being too rapid is reduced while the reduction of battery costs and the improvement of the safety performance and the cold start performance are ensured.

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