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SECONDARY BATTERY COATING COMPOSITION, AND SECONDARY BATTERY USING SAME

Resumen de: EP4661114A1

A coating composition for a secondary battery according to the present invention is a composition for coating electrodes and/or separators, and includes a flame retardant, a dispersant, and an aqueous solvent. The flame retardant includes at least one of an inorganic flame retardant containing a hydroxyl group, a phosphorus-based flame retardant, a halogen-based flame retardant, and a melamine-based flame retardant.

BATTERY PACK AND DEVICE INCLUDING SAME

Resumen de: EP4661178A1

A battery pack according to an embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells are stacked along one direction; a pack frame that houses the battery cell stack; and a thermal resin plate located between the battery cell stack and the bottom portion of the pack frame, wherein a thermal resin layer formed by applying a thermal resin is located on one surface of the thermal resin plate, and the battery cell stack is fixed to the thermal resin layer, and wherein the thermal resin plate is detachably coupled to the pack frame.

NONAQUEOUS ELECTROLYTE SOLUTION, LITHIUM-ION BATTERY, AND ELECTRONIC DEVICE

Resumen de: EP4661135A1

A nonaqueous electrolyte solution includes a nonaqueous solvent and a lithium salt. The nonaqueous electrolyte solution comprises a specific amount of ethylene carbonate, propylene carbonate, 1,2,3-tris(2-cyanoethoxy)propane, and a boron-containing lithium salt additive. An aggregate mass percentage of the ethylene carbonate and the 1,2,3-tris(2-cyanoethoxy)propane in the nonaqueous electrolyte solution is set to fall within a specific range. An aggregate mass percentage of the propylene carbonate and the boron-containing lithium salt additive is set to fall within a specific range. The nonaqueous electrolyte solution put into use not only alleviates the volume resistance of the positive electrode and the lithium plating on the negative electrode of the lithium-ion battery, but also enables the battery to well exert high-temperature cycling performance at 65 °C or above and low-temperature output performance at -20 °C or below in a balanced way.

ELECTRODE MATERIAL COATING BACK ROLL HAVING INFLOW AIR DISCHARGE FUNCTION

Resumen de: EP4661087A1

The present invention relates to an electrode material coating back roll having an inflow air discharge function. The present invention, which is arranged in correspondence to an active material coating device for manufacturing a secondary battery and supports a current collector fabric while the coating device coats the current collector fabric with an active material, comprises: a close contact surface portion in close contact with the current collector fabric; and an exhaust induction portion which is integrated with the close contact surface portion, and which discharges air flowing between the back roll and the current collector fabric to the outside so as to prevent the current collector fabric from becoming delaminated by inflow air. The electrode material coating back roll having an inflow air discharge function, of the present invention, can immediately discharge incoming air even if air flows between the back roll and the current collector fabric, and thus delamination of the current collector fabric from the back roll is prevented so that a wrinkle-free electrode material layer with uniform thickness can be applied.

BATTERY DIAGNOSIS DEVICE AND BATTERY DIAGNOSIS METHOD

Resumen de: EP4660648A1

A battery diagnosis apparatus includes an information obtaining unit configured to obtain current data of a battery cell and a controller configured to obtain the current data in a constant voltage charging period of the battery cell, set a first timepoint at which the current data is obtained and a second timepoint at which the current data is obtained after an elapse of a predetermined time from the first timepoint, and determine a state of the battery cell based on current values at the first timepoint and the second timepoint.

BATTERY PRODUCTION DEVICE, BATTERY PRODUCTION SYSTEM, DEVICE FOR PRODUCING LITHIUM-ION BATTERY, AND METHOD FOR PRODUCING BATTERY

Resumen de: EP4661124A1

Provided with a manufacturing device of a laminated non-aqueous electrolyte secondary battery. Provided with a battery manufacturing device including an application unit (1300) configured to apply an electrolyte solution to an electrode body (1020) formed by supplying an electrode composition containing an electrode active material to a substrate (1010); and a bonding unit (1400) configured to bond a separator (1030) with the electrode body (1020) to which the electrolyte solution is applied, wherein the bonding unit (1400) has a positioning function achieved by an image processing.

A METHOD FOR PRODUCING A BATTERY

Resumen de: EP4661144A1

One or more markers (15, 16) are produced on at least one of the tabs (4, 7) of the electrodes (2, 5) which form the basic components of the battery. The electrodes include at least one pair of a first electrode (2) and a second electrode (5), each having a coated foil portion (3, 6) and a non-coated tab (4, 7). The markers can be indicative of technical and/or reference information related to the electrode to which the marked tab is attached, or of information regarding required manipulations of the electrode to which the marked tab is attached, wherein the method includes reading a marker on the marked tab and performing a manipulation of the electrode based on information derived from said marker.

BATTERY MONITORING DEVICE AND BATTERY HAVING A BATTERY MONITORING DEVICE

Resumen de: EP4661150A1

Die Erfindung betrifft eine Batterieüberwachungseinrichtung (36) für eine Batterie (10), wobei die Batterie (10) mehrere Batteriezellen (12) aufweist, wobei die Batterieüberwachungseinrichtung (36) zwischen benachbarten Batteriezellen (12) zumindest ein flächiges Messelement (38) aufweist, das derart zwischen zwei benachbarten Batteriezellen (12) angeordnet werden kann, dass das Messelement (38) eine Formänderung zumindest einer der Batteriezellen (12) erfassen kann, wobei das Messelement (38) eine Verformung, und/oder eine Kraft und/oder einen Druck, der auf das Messelement (38) wirkt, erfassen kann, und mit einer Auswerteschaltung (40), die mit dem zumindest einen Messelement (38) verbunden ist, wobei das Messelement (38) einen auf der erfassten Verformung, Kraft und/oder dem erfassten Druck basierenden Messwert oder ein Signal an die Auswerteschaltung (40) ausgeben kann, und die Auswerteschaltung (40) den zumindest einen Messwert oder das Signal mit einem Grenzwert für diesen Messwert oder das Signal vergleichen und bei Überschreiten zumindest eines Grenzwertes ein Fehlersignal ausgeben kann.Die Erfindung betrifft des Weiteren eine Batterie (10) mit einer solchen Batterieüberwachungseinrichtung (36)

SECONDARY BATTERY MANUFACTURING METHOD AND SECONDARY BATTERY MANUFACTURING APPARATUS

Resumen de: EP4659934A1

The present invention relates to a secondary battery manufacturing method, and more specifically, relates to a secondary battery manufacturing device and a secondary battery manufacturing method, which can effectively perform pouch cutting and foreign substance removal through a roll transfer process, and continuously perform unit pouch forming. According to one example of the present invention, a secondary battery manufacturing method, and a device using the same may be provided, which is characterized in that the method comprises: a transfer process for supplying a pouch fabric through a roll transfer device; and a slitting process for cutting the transferring pouch fabric in a direction perpendicular to the transfer direction to correspond to a length of a unit pouch, but partially cutting the pouch fabric to exclude both ends in the cutting direction, and the transfer process comprises a both end support transfer process for supporting and transferring uncut portions of both ends excluding the cut portion of the pouch fabric after the slitting process.

ELECTROLYTE SOLUTION, BATTERY CELL COMPRISING SAME, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4661138A1

Provided in the embodiments of the present application are an electrolyte solution, a battery cell comprising same, a battery and an electric device. The electrolyte solution comprises: a first additive, which comprises an isocyanate compound as represented by formula (I), wherein R comprises at least one of a hydrogen atom, a halogen atom, a nitrogen-containing group, an oxygen-containing group, a sulfur-containing group, a phosphorus-containing group, an alkyl group, a cycloalkyl group, a phenyl group, an aryl group, a halophenyl group, and an alkyl, cycloalkyl, phenyl, aryl or halophenyl group containing at least one isocyanate radical, and the value of n is any natural number of 0-8; and a lithium salt, which comprises lithium difluorosulfonimide, the weight content of the lithium difluorosulfonimide in the lithium salt being 30%-85% based on the total weight of the lithium salt. A battery comprising the electrolyte solution has both improved cycle performance and prolonged storage life.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERIES, AND SECONDARY BATTERY

Resumen de: EP4661104A1

A positive electrode active material for secondary batteries contains a lithium-metal composite oxide having a rock-salt type crystal structure assignable to space group Fm-3m. The lithium-metal composite oxide contains at least Li and Mn. The average roundness of particles of the lithium-metal composite oxide is 0.55 or more.

POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERIES, AND SECONDARY BATTERY

Resumen de: EP4661103A1

A positive electrode active material for secondary batteries contains a lithium-metal composite oxide having a rock-salt type crystal structure assignable to space group Fm-3m. The lithium-metal composite oxide contains at least Li and Mn. The average aspect ratio of particles of the lithium-metal composite oxide is less than 2.10.

POWER STORAGE DEVICE

Resumen de: EP4661196A1

A power storage device (10) comprising an electrode assembly (14) in which a positive plate (11) and a negative plate (12) are laminated together with a separator (13) therebetween, and a negative current collection plate (40) disposed on one end side in an axial direction P of the electrode assembly (14), the negative current collection plate (40) including an extension portion (43) extending in a lamination direction of the positive plate (11) and the negative plate (12), wherein a biasing portion (46) for biasing the inside of an exterior can (20) is provided at an end on the outer peripheral side of the extension portion (43).

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4661108A1

A positive electrode active material according to the present invention has a crystalline structure belonging to the space group R-3m, and is represented by the compositional formula LiαNaβNi1-b-cMnbXcOd, wherein X is at least one element selected from the group consisting of representative elements and transition metal elements other than Li, Na, Ni, and Mn, 0.80 < α ≤ 1.20, 0 < β ≤ 0.20, 0.80 < α+β ≤ 1.20, 0< 1-b-c ≤1, 0 ≤ b < 1, 0 ≤ c <1, and d is a value that satisfies electrical neutrality. The ratio I101/I012 of the integrated intensity I101 of a diffraction peak in the (101) plane to the integrated intensity I012 of a diffraction peak in the (012) plane of an X-ray diffraction pattern obtained through powder X-ray diffraction of the positive electrode active material is less than 2.2.

POWER STORAGE DEVICE

Resumen de: EP4661197A1

A power storage device (10), comprising an electrode body (14) in which a positive electrode plate (11) and a negative electrode plate (12) are stacked with a separator (13) interposed therebetween, and a negative current collector plate (40) positioned on the lower-end side of the electrode body (14) in an axial direction P, the negative current collector plate (40) having a negative electrode junction (44) that extends along a radial direction D of the electrode body (14) and is joined to the negative electrode plate (12), and the negative electrode junction (44) being inclined as seen from a circumferential direction R.

CYCLE LIFE PERFORMANCE DETERMINATION FOR BATTERIES USING ACOUSTIC SIGNAL ANALYSIS

Resumen de: US2024264121A1

Systems, techniques, and computer-implemented processes for cycle life performance determination of batteries using non-invasive acoustic solutions. In one aspect, a battery inspection system includes a plurality of transducers, and a controller communicatively coupled to the plurality of transducers. The controller is configured to send one or more commands to a first subset of the plurality of transducers for transmitting acoustic signals through a battery cell, receive, from a second subset of the plurality of transducers, response signals in response to the acoustic signals transmitted through the battery cell, and determine a cycle life performance score for the battery cell based on at least the response signals, the score indicating an estimated number of charge-discharge cycles that the battery cell goes through prior to reaching a threshold retention capacity.

PRESSURE RELIEF VALVE AND BATTERY PACK

Resumen de: EP4661183A1

Provided are a pressure relief valve (100) and a battery pack (10). A pressure relief valve (100) includes a valve body (110). The valve body (110) is provided with a pressure relief hole (1100) penetrating through the valve body (110) along a length direction (LD) of the valve body (110). At least one whistle hole (1130) is disposed at a side wall (SW) of the valve body (110). Each of the at least one whistle hole (1130) extends from an outer side surface (1104) of the valve body (110) to an inner side surface (1103) of the valve body (110), to form an opening (1131) communicated with the pressure relief hole (1100) at the inner side surface (1103). The whistle hole (1130) is configured to generate a sound when a portion of gas in the pressure relief hole (1100) is discharged through the whistle hole (1130).

METHOD FOR (DEEP) DISCHARGING (VEHICLE) BATTERY UNITS

Resumen de: EP4659999A1

Die Erfindung betrifft Verfahren zum Entladen einer Batterieeinheit, umfassend: Durchführen (220) eines Entladevorgangs der Batterieeinheit; Bestimmen (230) eines zeitlichen Verlaufs einer Temperatur der Batterieeinheit während eines vorgegebenen Zeitintervalls des Entladevorgangs, insbesondere zu Beginn des Entladevorgangs; Bestimmen (250) eines Wendepunkts des zeitlichen Verlaufs der Temperatur in dem vorgegebenen Zeitintervall; Bestimmen (260) eines zu erwartenden Maximalwerts der Temperatur der Batterieeinheit abhängig von dem bestimmten Wendepunkt; Durchführen (270) des Entladevorgangs nach dem vorgegebenen Zeitintervall abhängig von dem bestimmten, zu erwartenden Maximalwert, insbesondere Vorgeben einer Stromstärke des Entladevorgangs nach dem vorgegebenen Zeitintervall abhängig von dem bestimmten zu erwartenden Maximalwert.

CELL BALANCING DEVICE AND METHOD

Resumen de: EP4661157A1

This application discloses a cell balancing device and method. The method includes: obtaining a first minimum cell voltage value and a first maximum cell voltage value of a to-be-balanced battery module in a latest full-charging operation; determining a first charge capacity of a first target cell in the battery module in a corresponding first time period in response to a first charging operation performed by the battery module; and updating a balancing capacity of the first target cell based on the first charge capacity. The first target cell is a cell with a voltage value greater than or equal to the first minimum cell voltage value. The first time period corresponding to the first target cell is a period of time that begins when the voltage value of the first target cell reaches the first minimum cell voltage value for a first time and that ends when the first charging operation of the battery module is ended.

SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME

Resumen de: EP4661129A1

The disclosure relates to a battery cell. More specifically, the disclosure relates to a battery cell minimizing a connection space between a non-coating portion forming an electrode assembly (100) and a current collector (220). The battery cell according to the disclosure can maximize the use efficiency of an internal space by minimizing a connection space between a non-coating portion of a jelly roll-shaped electrode assembly and a current collector (220). The battery cell according to the disclosure can increase a capacity by reducing a space loss inside a case (400) accommodating an electrode assembly (100). The battery cell according to the disclosure arranges a welding face of a current collector (220) perpendicular to a winding axis direction of an electrode assembly (100), and thus can reduce damage to the electrode assembly (100) when the battery cell is crushed and can improve safety.

CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, CATHODE INCLUDING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Resumen de: EP4660149A1

A cathode active material for a lithium secondary battery according to embodiments of the present disclosure includes lithium-metal oxide particles having a sphericity of 0.96 or less and an elongation of 0.25 to 0.5. The elongation is calculated as (1 - b/a). Here, a denotes the length of the major axis of the lithium-metal oxide particle in a cross-sectional image of the lithium-metal oxide particles observed using SEM, and b denotes the length of the minor axis of the lithium-metal oxide particle in the cross-sectional SEM image of the lithium-metal oxide particles.

BATTERY SUBSTRATE, SECONDARY BATTERY COMPONENT AND METHOD OF PRODUCING THE SAME

Resumen de: EP4661089A2

A battery substrate applied to a secondary battery, comprising: a first substrate (103) comprising a resin; an adhesive layer (102) having one surface adhered to the first substrate; a particle layer (601) comprising at least one selected from the group consisting of a solid electrolyte, an active material and a current collector material and disposed on the other surface opposite to the one surface of the adhesive layer (102) ; and a second substrate (101) disposed in a region of the other surface where the particle layer (601) is not disposed, wherein the second substrate (101) is disposed so as to support a periphery of a region where the particle layer (601) is disposed in at least two directions.

METHOD FOR ESTIMATING BATTERY CATHODE CAPACITY AND BATTERY RECYCLING SYSTEM USING THE SAME

Resumen de: EP4661155A2

A processor-implemented method for estimating a cathode capacity of a battery and a battery recycling system utilizing the method are provided. A processor-implemented method for estimating a cathode capacity of a battery includes receiving first discharge data associated with a first discharge rate of a battery, receiving second discharge data associated with a second discharge rate of the battery, receiving third discharge data associated with a third discharge rate of the battery, and estimating the cathode capacity of the battery based on the first discharge rate, the second discharge rate, the third discharge rate, the first discharge data, the second discharge data, and the third discharge data, where the first discharge rate, the second discharge rate, and the third discharge rate may be different from each other.

SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF MANUFACTURING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: EP4661189A1

Examples of the present disclosure include a separator for a rechargeable lithium battery, a method of manufacturing the separator, an electrode assembly for a rechargeable lithium battery including the separator, and a rechargeable lithium battery including the separator. Examples of the present disclosure include a separator for a rechargeable lithium battery, the separator including a first area, and a second area located at each of both ends of the first area, wherein :Thickness increase rate of second area > MD heat shrinkage rate of second area, and :Thickness increase rate of second area > TD heat shrinkage rate of second area.

MONOMER FOR ELECTROLYTE, ELECTROLYTE FOR SECONDARY BATTERY INCLUDING THE SAME, METHOD OF PREPARING THE SAME AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Nº publicación: EP4661137A1 10/12/2025

Solicitante:

SK INNOVATION CO LTD [KR]
SK ON CO LTD [KR]
SK Innovation Co., Ltd,
SK On Co., Ltd

Resumen de: EP4661137A1

A monomer for an electrolyte according to the embodiments of the present disclosure may include a compound represented by Formula 1. A lithium secondary battery according to the embodiments of the present disclosure includes a cathode, an anode, and an electrolyte, wherein the electrolyte may include a polymer of the compound represented by Formula 1.wherein X₁, X₂ and X₃ are each independently a halogen element,R₁, R₂ and R₃ are each independently hydrogen, a halogen element, a substituted or unsubstituted C1 to C6 alkyl group, or a polymerizable group, andat least one of R₁, R₂ or R₃ is a polymerizable group.