Alerta

Electrode Assembly Having Curved Tab Bundle and Electrode Assembly Tab Bundle Forming Apparatus for Manufacturing the Same

Resumen de: US2025300330A1

The present invention relates to an electrode assembly configured such that a separator is interposed between a plurality of electrodes each having an electrode tab protruding therefrom and the electrode tabs are stacked to form a tab bundle, wherein a convex portion and a concave portion are successively formed at the tab bundle so as to extend in a longitudinal direction of the electrodes. The convex portion and the concave portion formed at the tab bundle ensure the length margin of the electrode tabs to prevent tab breakage.

SECONDARY BATTERY

Resumen de: US2025300331A1

A secondary battery is provided that reduces welding resistance between an electrode tab and a terminal and quickly and easily dissipates heat if a plurality of electrode assembles are installed in one case. The secondary battery includes a plurality of electrode assemblies including a negative electrode plate provided with a negative electrode non-coating portion and a positive electrode plate provided with a positive electrode non-coating portion, a case accommodating the electrode assembly, a cap plate covering an open inlet of the case, a negative electrode terminal installed on the cap plate for each of the electrode assemblies and electrically connected to the negative electrode non-coating portion, and a positive electrode terminal installed in the case in an opposite direction of the negative electrode terminal and electrically connected to the positive electrode non-coating portion.

BATTERY MODULE AND METHOD OF MANUFACTURING THE BATTERY MODULE

Resumen de: US2025300327A1

A battery module and a method of manufacturing the same, are capable of improving the stability of mechanical and electrical connections. The battery module includes a housing, a battery cell disposed inside the housing, a first bus bar connected to the battery cell and including a first conductive material connected to the first bus bar and a module bus bar. The second bus bar includes a second conductive material that is different than the first conductive material.

POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME

Resumen de: US2025300187A1

The present exemplary embodiments relate to a positive electrode active material for a lithium secondary battery, and a lithium secondary battery including the same. The positive electrode active material for a lithium secondary battery according to an exemplary embodiment includes: a metal oxide in the form of a single particle; and a coating layer positioned on the surface of the metal oxide, wherein a concentration of lithium in a 2⁄5 to 3⁄5 thickness area based on the total thickness of the coating layer has a lower value than a concentration of lithium in the metal oxide.

ALL SOLID BATTERY

Resumen de: US2025300158A1

An all solid battery includes a first overlapping portion in which a tip of a first internal electrode layer and a part of a first margin overlap each other, viewed along a stacking direction. 0°<θ<90° and 0.1×t1/tan θ≤d<2.0×t1/tan θ are satisfied when in the first overlapping portion, an angle formed by a straight line connecting a tip point E1 of the first internal electrode layer on the first margin side and a tip point E2 of the first margin on the first internal electrode layer side and a straight line connecting both ends of the first internal electrode layer is “θ”, a thickness of the first margin is “t1”, and a length between the tip point E1 and the tip point E2 in the third direction is “d”.

NOZZLE MEMBER AND DRYING DEVICE INCLUDING THE SAME

Resumen de: US2025300157A1

A nozzle member and a drying device for manufacturing a secondary battery. The nozzle member can uniformly dry even in regions where the width of the electrode plate changes by utilizing a number of nozzle parts having the same shape, and a drying device including the same. The nozzle member includes a number of nozzle parts spaced apart from each other, and each of the nozzle parts includes a frame; an inlet part connected to the frame and into which the dry material is configured to flow; a discharge part in contact with the frame and configured to discharge the dry material; and a flow part between the inlet part and the discharge part. The frame includes an insertion part, the inlet part is fixed to the frame, and the discharge part is movable.

PROCESS SIMULATION SYSTEM AND METHOD

Resumen de: US2025298943A1

A process simulation system for a drying facility for drying an electrode plate of a rechargeable battery includes a process simulation device configured to perform a process simulation of the drying facility by using an artificial neural network-based simulation model. The simulation model may include a first artificial neural network configured to receive facility state data of the drying facility and predict fluid behavior in a fluid region of the drying facility from the facility state data, a second artificial neural network configured to receive the facility state data and predict a temperature in the fluid region, and a third artificial 10 neural network configured to receive output from the first artificial neural network and the second artificial neural network, and predict a temperature on a boundary of the fluid region.

ELECTRONIC APPARATUS

Resumen de: US2025298440A1

An electronic apparatus includes: a chassis member having an opening surface; a cover member including a plate portion, and an inclined wall portion provided in a standing manner from an edge portion of the plate portion and inclined in a direction separating from the plate portion toward a standing direction of the inclined wall portion, the cover member being configured to open and close at least part of the opening surface; a battery detachably supported on an inner surface side of the chassis member and including a locked part on a first lateral surface facing the inclined wall portion; a latch member supported on the chassis member in such a manner as to be movable between a locked position where the latch member holds down the locked part and an unlocked position where the latch member retracts from the locked part; and a spring member.

BATTERY SEPARATOR COATING PROCESS AND BATTERY SEPARATOR PREPARED THEREBY

Resumen de: WO2025194795A1

A battery separator coating process and a battery separator prepared thereby, relating to the technical field of battery separators. The battery separator coating process comprises the following steps: providing a coating, the coating comprising 35-45 parts by weight of polyvinylidene fluoride micro powder, 15-25 parts by weight of fluorine-silicon modified polyurethane, 4.8-5.8 parts by weight of nano aluminum oxide, 1-2 parts by weight of a wetting agent, 0.2-0.3 parts by weight of a thickening agent, 0.1-0.15 parts by weight of a dispersing agent and 40 parts by weight of a solvent; coating a base film with a dot coating: coating the surface of the base film with the coating by using a flexographic printing process, and on a continuous winding belt, drying at 110-120°C for 1-2 s and drying at 60-80°C for 10-15 s. By using the process above, the base film is coated with the dot coating, so that stable coating of the dot coating having a dot diameter of 0.01 mm and an inter-dot spacing of 0.01 mm can be achieved, thereby obtaining a battery separator having high electrode sheet bonding performance, high air permeability and long service life.

SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: WO2025195220A1

The present application provides a secondary battery and an electric device. The secondary battery comprises a positive electrode sheet and a negative electrode sheet. The positive electrode sheet comprises a positive electrode active material; the positive electrode active material comprises a ternary material containing a nickel element and a crystalline coating layer located on at least part of the surface of the ternary material; and the ternary material has a molecular formula of LiaNibCocMn1-b-cOe, wherein 0.9≤a≤1.2, 0.55≤b≤0.96, 0

LITHIUM-ION BATTERY AND ELECTRIC DEVICE

Resumen de: WO2025194936A1

Disclosed in the embodiments of the present application are a lithium-ion battery and an electric device. The lithium-ion battery comprises an electrolyte, wherein the electrolyte comprises a lithium salt, and the concentration c of the lithium salt in the electrolyte satisfies: c≥1 mol/L; the density ρ of the electrolyte satisfies: 0.9 g/mL≤ρ≤1.23 g/mL; and the charging time t of charging the lithium-ion battery from 10% SOC to 80% SOC satisfies 8.8 min≤t≤15 min: The lithium-ion battery has both good fast-charging capability and cycling performance.

CURRENT COLLECTOR, COOLING ASSEMBLY, BATTERY, AND ELECTRICAL DEVICE

Resumen de: WO2025194683A1

Embodiments of the present disclosure provide a current collector, a cooling assembly, a battery, and an electrical device. The current collector is used to connect to a harmonica-shaped tube, and comprises a cover body, supporting ribs, and a supporting elastic piece. The cover body is provided with a first flow channel having a first opening. Multiple supporting ribs are connected to the cover body at intervals, and are located in the first flow channel. A snap-fit groove is formed between the supporting ribs and the cover body, the snap-fit groove being used for containing the harmonica-shaped tube. The supporting elastic piece is connected to the supporting ribs, and at least a portion of the supporting elastic piece extends between two adjacent supporting ribs, the supporting elastic piece being used to support the harmonica-shaped tube.

Battery System and Battery Management System Commonizing Method

Resumen de: US2025300253A1

A battery system includes a battery module; a cell monitor controller (CMC) including a battery monitoring integrated circuit (BMIC) that monitors a cell voltage of each of the plurality of battery cells based on a signal received from the plurality of input terminals; and a branch board including a plurality of wirings that provide a power path connecting the plurality of battery terminals and the plurality of input terminals of the CMC, and a plurality of switches that have one end connected to one of each of a plurality of adjacent two wirings included in the plurality of wirings and the other end connected to the other of each of the two wirings.

ELECTRODE ASSEMBLY SHORT CIRCUIT TEST DEVICE AND METHOD FOR RECHARGEABLE BATTERY

Resumen de: US2025300249A1

An electrode assembly short-circuit test apparatus for a rechargeable battery, includes: a first plate to press a first side of an electrode assembly, the electrode assembly including a negative electrode, a positive electrode, and a separator between the negative electrode and the positive electrode; a second plate to press a second side of the electrode assembly against the first plate; and a continuous pulser connected to a negative electrode tab and a positive electrode tab of the electrode assembly to apply continuous pulses to the negative electrode tab and the positive electrode tab.

STACKED STRUCTURE

Resumen de: US2025300254A1

The stacked structure includes a battery module, a conductive member, a first conductive adhesive, and a first temperature sensor. The conductive member is laminated on the battery module. The first conductive adhesive is disposed between the battery module and the conductive member. The first conductive adhesive adheres the battery module and the conductive member to each other. The first conductive adhesive electrically connects the battery module and the conductive member to each other. The first temperature sensor is disposed between the battery module and the conductive member to be in contact with the first conductive adhesive.

RECHARGEABLE BATTERY

Resumen de: US2025300329A1

A rechargeable battery includes: an electrode assembly having an uncoated region; a can having a bottom portion facing the uncoated region and a side portion connected to an edge of the bottom portion, the can accommodating the electrode assembly in an inner space thereof, the bottom portion of the can having a base part connected to the side portion and a plurality of welding stepped parts protruding from the base part toward the uncoated region and welded to the uncoated region; and a cap plate coupled to an open end of the side portion to seal the can.

FORMATION METHOD FOR POUCH-TYPE BATTERY CELLS

Resumen de: US2025300256A1

A method of forming a battery cell using a formation device for a pouch-type battery cell includes a first charging step of charging a battery cell in a charging part; a hole processing step of forming a discharge hole in the gas pocket part of the charged battery cell; a gas discharging step of discharging internal gases generated during charging through a discharge hole; and a sealing step of sealing a discharge hole.

SYSTEM FOR DETERMINING AN ELECTRICAL REFERENCE IN TESTS ON ELECTROCHEMICAL CELLS AND DEVICE FOR TESTS ON ELECTROCHEMICAL CELLS

Resumen de: US2025300248A1

A system for determining an electrical reference in tests on an electrochemical cell includes a rigid separator that determines a separation volume between a working electrode and a counter electrode. The rigid separator also includes an electrically-insulating and ionically-conductive porous material. The rigid separator element is configured to be permeated by an electrolyte and through which ions pass during the charge or the discharge of the electrochemical cell. The system also includes reference electrode that includes an end portion and a contact portion electrically connected to the end portion. The end portion is configured to be connected to a measurement instrument and the contact portion is configured to be in contact with the electrolyte during testing of the electrochemical cell. The contact portion of the reference electrode is at least partially within the separation volume defined by the rigid separator.

BATTERY INSPECTION METHOD

Resumen de: US2025298084A1

Battery inspection methods are provided. The provided battery inspection methods include battery inspection methods which comprise: a data acquisition step of acquiring impedance spectrum data for a finished secondary battery in order to identify cracks in the electrodes of the secondary battery through non-destructive inspection; a first function acquisition step of acquiring a first function, having the log scale of the measurement frequency as an independent variable and the absolute value of impedance as a dependent variable, from the impedance spectrum data through function fitting; a second function acquisition step of acquiring a second function by differentiating the first function with respect to the log scale of the measurement frequency; and a battery state determination step of determining the state of the secondary battery on the basis of the second function.

LITHIUM-METAL-BATTERY DEGRADATION-STATE DETERMINATION DEVICE, METHOD OF DETERMINING DEGRADATION STATE OF LITHIUM METAL BATTERY, AND STORAGE MEDIUM

Resumen de: US2025298086A1

A lithium-metal-battery degradation-state determination device includes a processor. The processor is configured to acquire resistance value information relating to a resistance value obtained by applying a voltage to a lithium metal battery including a negative electrode containing lithium, and determine a degradation state of the lithium metal battery based on a first map, created in advance and indicating a relationship between a thickness of the negative electrode and the resistance value, and the acquired resistance value information.

SINGLE BATTERY AND BATTERY PACK

Resumen de: WO2025194740A1

The present application relates to the related technical field of batteries. Disclosed are a single battery and a battery pack, which are used to solve the problems of short circuits and low yield rates of single batteries due to the fact that welding slag and metal burrs in existing single batteries escape into battery cells. The single battery provided in the present application comprises: a cap, wherein the cap is provided with a terminal post hole penetrating the cap in a first direction Z; a terminal post, which passes through the terminal post hole; at least two battery cells, each of which comprises a body and a tab bundle connected to the body, wherein each tab bundle consists of a plurality of stacked tabs and has a welding portion, there is a gap between welding portions of tab bundles of two adjacent battery cells in a second direction X, and in a non-welding area of each welding portion, there is a slit between two adjacent tabs on the same tab bundle in the first direction Z; and a protective adhesive structure, which comprises a filling portion and a covering portion, wherein the filling portion fills gaps and slits, and the covering portion is connected to the surface of each welding portion that faces away from the terminal post and at least covers a welding mark formed in a welding area of each welding portion.

FUME TREATMENT DEVICE, BATTERY, AND ENERGY STORAGE SYSTEM

Resumen de: WO2025194685A1

A fume treatment device (100), a battery, and an energy storage system. The fume treatment device (100) comprises: a gas chamber (10), a gas supply structure (20) in communication with the gas chamber (10), and a fume intake pipe (30), wherein one end of the fume intake pipe (30) is in communication with the gas chamber (10), the fume intake pipe (30) is configured to allow fumes to enter the gas chamber (10), the fume intake pipe (30) is provided with a sensor (31), the sensor (31) is configured to send a signal to the gas supply structure (20), and the fume intake pipe (30) is further provided with a delay structure (32) located between the sensor (31) and the gas chamber (10); and the gas supply structure (20) is configured to receive the signal and supply an inert gas to the gas chamber (10), and the delay structure (32) is configured to delay the opening of the fume intake pipe (30), such that the time when the fumes enter the gas chamber (10) is later than the time when the inert gas enters the gas chamber (10). In the fume treatment device (100), by means of the configurations of the delay structure (32) and the gas supply structure (20), when the fumes enter the gas chamber (10), the content of oxygen in the gas chamber (10) is relatively low, thereby reducing the risk of fume combustion and explosion.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2025194720A1

The present application relates to the technical field of batteries, and provides a battery cell, a battery, and an electric device. The battery cell comprises a casing and an electrode assembly. An accommodating cavity is formed in the casing. The electrode assembly is accommodated in the accommodating cavity; the electrode assembly comprises a first electrode sheet; the first electrode sheet comprises a first main body portion and a first tab; the first main body portion is provided with a first main body area and a first thinned area arranged in a first direction; the thickness of the first thinned area is less than that of the first main body area; and the first tab is connected to the end of the first thinned area distant from the first main body area in the first direction. A thickened portion protrudes from the wall surface of the accommodating cavity; in the thickness direction of the first thinned area, at least part of the projection of the first thinned area is located in the thickened portion; and the thickness direction of the first thinned area is perpendicular to the first direction. The thickened portion can enhance the constraint of the casing on the first thinned area of the first electrode sheet, thereby mitigating excessive gaps or bending in the first thinned area of the first electrode sheet after expansion.

METHOD OF MANUFACTURING MEMBER FOR ELECTROCHEMICAL ELEMENT AND APPARATUS FOR MANUFACTURING ELECTROCHEMICAL ELEMENT

Resumen de: US2025300242A1

A method of manufacturing a member for an electrochemical includes applying a first liquid composition containing a first polymerizable compound and a first solvent to one side of a substrate, polymerizing the first polymerizable compound in the first liquid composition applied to the one side of the substrate, applying a second liquid composition containing a second polymerizable compound and a second solvent to the other side of the substrate, polymerizing the second polymerizable compound in the second liquid composition applied to the rest side of the substrate, and removing the first solvent in the first liquid composition and the second solvent in the second liquid to form structured layers, wherein at least one of region A, to which the first liquid composition is applied, and region B, to which the second liquid composition is applied, overlaps each other by at least 80 percent in a plan view of the substrate.

BATTERY MODULE

Nº publicación: US2025300299A1 25/09/2025

Solicitante:

HONDA MOTOR CO LTD [JP]
HONDA MOTOR CO., LTD

Resumen de: US2025300299A1

A battery module includes a cell stack that includes battery cells and heat exchangers, a holding mechanism that holds the cell stack by pressing both stacking-direction end portions of the cell stack inward in the stacking direction, and a fall-off prevention mechanism that prevents at least the heat exchangers from falling off the cell stack.