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CATHODE ACTIVE MATERIAL, CATHODE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY

Resumen de: EP4708390A1

A positive electrode active material includes a lithium composite transition metal oxide in the form of a single particle composed of one single nodule and/or in the form of a pseudo-single particle, which is a composite of 30 or less nodules, and a coating layer formed on the surface of the lithium composite transition metal oxide. The coating layer contains aluminum (Al) and tungsten (W). The positive electrode active material satisfies Equation 1 below: 45≤X×X′≤56 wherein, X is the content of nickel among all metals except for lithium in the lithium composite transition metal oxide(unit: mol%), and X' is the BET specific surface area of the positive electrode active material (unit: m<2>/g).

POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PREPARING SAME, POSITIVE ELECTRODE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY

Resumen de: EP4708389A1

A positive electrode active material according to the present invention includes a lithium composite transition metal oxide which has an amount of nickel among total metals excluding lithium of 50 mol% to 80 mol% and is in a form of a single particle composed of one single nodule or a pseudo-single particle that is a composite of 40 or less nodules; and a tungsten-containing coating layer formed on a surface of the lithium composite transition metal oxide, wherein a ratio (Li/W) of the number of moles of lithium to the number of moles of tungsten, which is measured by inductively coupled plasma optical emission spectroscopy (ICP-OES) analysis after performing a pretreatment under conditions of immersing the positive electrode active material in deionized water at 25°C for 1 hour, satisfies a range of 30 to 45.

SECONDARY BATTERY

Resumen de: EP4708468A1

A secondary battery includes an electrode assembly including a plurality of unit batteries stacked in a first direction and having electrode leads on opposing ends in a second direction perpendicular to the first direction; a multifunctional terminal block (MTB) included on the opposing ends of the electrode assembly; and a laminate sheet coupled to a side surface of the stack-type electrode assembly, wherein the MTB includes a fused resin layer on a side surface thereof.

NEGATIVE ELECTRODE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: EP4708380A1

The present invention relates to a negative electrode active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the negative electrode active material for a rechargeable lithium battery includes graphite including secondary particles in which primary particles are assembled; and amorphous carbon present inside the secondary particles, wherein a ratio of the average particle diameter D50 of the amorphous carbon to the average particle diameter D50 of the primary particles is 0.1 to 0.5.

DEVICE AND METHOD FOR TRANSFERRING BLANKS

Resumen de: EP4707209A1

Die Erfindung betrifft eine Vorrichtung und ein Verfahren für eine Übergabe von Zuschnitten an eine Übergabestrecke, insbesondere für eine Übergabe von Zuschnitten (10) an eine Materialbahn, eine Transportbahn (14), eine rotierende Walze und/oder an entlang einer Transportstrecke transportierte Produkte (12), die Vorrichtung (1) umfassend ein Positioniersystem (2) mit mindestens zwei, insbesondere drei oder mehr, entlang einer umlaufenden Bahn bewegbaren Schlitten (20) und mit einem Antriebssystem (24), wobei die Schlitten (20) jeweils eine Produktaufnahme (22) aufweisen und eingerichtet sind, um jeweils einen Zuschnitt (10) an der Produktaufnahme (22) aufzunehmen, den Zuschnitt (10) ortsfest an der Produktaufnahme gehalten zu transportieren, und den Zuschnitt (10) an die Übergabestrecke zu übergeben, und wobei das Antriebssystem (24) eingerichtet ist, um die Schlitten (20) entlang der umlaufenden Bahn zumindest abschnittsweise unabhängig voneinander zu bewegen.

SECONDARY BATTERY, BATTERY PACK AND ELECTRONIC DEVICE

Resumen de: EP4708423A1

A secondary battery (100) is provided, including an electrode assembly (120) which includes a negative pole sheet (11), a first separator (12), a positive pole sheet (13), and a second separator (14). The negative pole sheet (11) includes a negative coated area (211) and a negative tab (311) protruding from the negative coated area (211). The positive pole sheet (13) includes a positive coated area (213) and a positive tab (313) protruding from the positive coated area (213). A direction from the negative tab (311) to the positive tab (313) is a height direction (H). Along the height direction (H), an upper end of the negative coated area (211) overhangs an upper end of the positive coated area (213). Along a direction away from the height direction (H), a lower end of the negative coated area (211) overhangs a lower end of the positive coated area (213).

POLYMER ELECTROLYTE, SECONDARY BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4707313A1

Disclosed is a polymer electrolyte, including: a polymer substrate; and a copolymer, wherein the polymer substrate includes a support material, and the copolymer contains cyano groups, ester groups, and sulfonic acid groups. In the present disclosure, the polymer substrate serves as a support material to provide a mechanical strength, and the function of the copolymer is to form a stable interface with positive electrodes and negative electrodes. Furthermore, the copolymer contains cyano groups, ester groups, and sulfonic acid groups, all of which are polar groups that enable improvement of the mechanical properties of the electrolyte, while having high a reduction resistance and an oxidation resistance, enabling formation of a stable SEI film with the negative electrodes and a stable CEI film with the positive electrodes, which may enable the prepared secondary battery to have a high energy density and to be able to operate cycles in the long term.

Lithium ion battery pack and charging system

Resumen de: GB2643966A

A lithium ion battery pack (10) comprises: a lithium ion battery cell (20); a housing in which the lithium ion battery cell (20) is built and which is provided with a positive electrode terminal (Pvcc+), a negative electrode terminal (Pvcc-), and communication terminals (Pcl+, Pcl-); a BMS circuit (110) which is built in the housing and which includes a control unit that controls charging and discharging of the lithium ion battery cell (20); a communication IC (40) which causes terminal voltage values of the lithium ion battery cell (20) to output to the outside through the communication terminals (Pcl+, Pcl-) without passing through the BMS circuit (110); a first relay circuit (61) which, upon receiving a first control signal from the control unit of the BMS circuit (110), conducts or cuts off power supply to the lithium ion battery cell (20) through the positive electrode terminal (Pvcc+) and the negative electrode terminal (Pvcc-); an LDO (51) which supplies power to the control unit; and an LDO(52) which supplies power to the communication IC (40) separately from the LDO (51).

ENERGY STORAGE SYSTEM

Resumen de: EP4708494A2

An energy storage system includes a module unit comprising the plurality of battery modules. The plurality of battery modules each accommodates a plurality of cell units. Each of the plurality of cell units comprise a plurality of battery cells arranged in a first direction and are arranged in a second direction, perpendicular to the first direction. A pipe portion is connected to a fire extinguishing tank storing a fire extinguishing agent and extends into the module unit. The pipe portion includes a main pipe extending from the fire extinguishing tank and a sub-pipe branched from the main pipe. One end of the sub-pipe is connected to a first branch point of the main pipe, and another end of the sub-pipe is connected to a second branch point of the main pipe. The sub-pipe extends to pass through all the plurality of battery modules.

POUCH CELL FOR SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF

Resumen de: EP4708557A1

A pouch cell manufacturing method of the present disclosure prevents the sealing quality of a pouch from being deteriorated by an electrolyte solution, by reducing the amount of the electrolyte solution staining the sealing portion of the pouch, and a pouch cell in which gas inside the pouch can be efficiently discharged to the outside of the pouch is provided. The pouch cell of the present disclosure includes: an electrode assembly; a pouch within which the electrode assembly is accommodated; and a gas discharge pipe that is disposed such that the gas discharge pipe extends from the inside of the pouch to the outside, in which gas inside the pouch can be transmitted through the gas discharge pipe and discharged to the outside of the pouch.

PREPARATION METHOD OF MANGANESE IRON PHOSPHATE PRECURSOR, CATHODE SHEET, AND LITHIUM BATTERY

Resumen de: EP4707234A1

A preparation method of a manganese iron phosphate precursor, a cathode sheet, and a lithium battery comprising: preparing the precursor based on a high-temperature calcination device. The high-temperature roasting furnace comprises a sprayer, a heater, and a particle size regulator. The method comprises: generating a manganese-containing solution from a manganese source and hydrochloric acid; generating an iron phosphate solution from an iron source, a phosphorus source, and hydrochloric acid; mixing the manganese-containing solution, iron phosphate solution, and dispersant to obtain a mixed solution; preheating the mixed solution; and transporting the mixed solution to the high-temperature roasting furnace; spraying and roasting the mixed solution in the high-temperature calcination furnace in the atmosphere of carrier gas, forming a powdered manganese iron phosphate precursor with at least two preset particle sizes; water washing and grinding, demagnetizing, and drying the manganese iron phosphate precursor to obtain the manganese iron phosphate precursor.

SEPARATOR, SECONDARY BATTERY, AND ELECTRONIC DEVICE

Resumen de: EP4708538A1

A separator includes a base film and a first coating disposed on a surface of the base film to face one side of a positive electrode. The first coating includes an organic cyanide with a first functional group. The first functional group includes at least one of a cyano group, an isocyano group, an isocyanate group, or a melamine compound. The first functional group of the first coating has a molar concentration of M fmol/µm<3>, where 0.1 ≤ M ≤ 30. The secondary battery provided by this application has a high energy density and also has good thermal safety, high-temperature cycle performance and high-temperature storage performance.

SOLID ELECTROLYTE MATERIAL AND BATTERY

Resumen de: EP4708396A1

A solid electrolyte material (3) configured to suppress a decrease in ion conductivity, the solid electrolyte material comprising a polymer electrolyte, an inorganic filler and succinonitrile, the polymer electrolyte comprises an anionic polymer.

COMPOSITE SOLID ELECTROLYTE MEMBRANE, MANUFACTURING METHOD THEREFOR, AND ALL-SOLID-STATE BATTERY COMPRISING SAME

Resumen de: EP4708433A1

The present invention relates to a composite solid electrolyte membrane, a method of preparing same, and an all-solid-state battery comprising same. The composite solid electrolyte membrane comprising: a solid electrolyte membrane comprising a solid electrolyte and a binder; and an ionic liquid, wherein the solid electrolyte membrane comprises a plurality of pores, the ionic liquid is impregnated in the plurality of pores, and the anion of the ionic liquid is (CF₃SO₂)₂N^-.

MANUFACTURING METHOD OF NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4708425A1

The manufacturing method of the nonaqueous electrolyte secondary battery is provided, which includes a construction step for constructing a secondary battery whose volume is equal to or more than at least 500 cm³, an initial electrically charging step for electrically charging the secondary battery until a SOC becomes 20% to 39%, a high temperature aging step for heating up and holding the secondary battery in a high temperature range, a room temperature aging step for cooling down the secondary battery being in the high temperature range and then holding the secondary battery in a room temperature range, and an inspecting resistance step for calculating an internal resistance of the secondary battery while the secondary battery is maintained in the room temperature range.

ENERGY STORAGE SYSTEM

Resumen de: EP4708457A1

The present disclosure provides an energy storage system (10). The energy storage system (10) includes: a plurality of battery modules (40) each of which battery module (40) includes a plurality of battery cells (50); a first cooling system (100) that cools a first battery module set (42) among the plurality of battery modules (40); a second cooling system (102) that cools a second battery module set (44) among the plurality of battery modules (40); a central valve (300) that controls a flow of a refrigerant between the first cooling system (100) and the second cooling system (102); and a battery management system (200) that monitors and controls operations of the plurality of battery modules (40), the first cooling system (100), the second cooling system (102), and the central valve (300). The battery management system (200) controls the central valve (300) to control the flow of the refrigerant between the first cooling system (100) and the second cooling system (102) depending on whether an abnormality occurs in the operation of any one of the first cooling system (100) and the second cooling system (102).

DEVICE FOR MANUFACTURING SECONDARY BATTERY, AND METHOD OF MANUFACTURING SECONDARY BATTERY

Resumen de: EP4708419A1

The invention relates to device (400) and a method for manufacturing a secondary battery (100). The resulting secondary battery (100) includes an electrode assembly (110) including a side that extends in a first direction, a case (150) accommodating the electrode assembly (110), a lead tab (132_1, 134_1) protruding from the side of the electrode assembly (110), and a strip terminal (142, 144) connected to the lead tab (132_1, 134_1). The lead tab (132_1, 134_1) is bent in the first direction. The strip terminal (240) includes a first section (242) connected to the lead tab (230) and extending in the first direction, and a second section (244) connected to the first section (242) and bent in a second direction that intersects the first direction. An angle between the first section (242) and the second section (244) is 90 degrees or less.

POSITIVE ELECTRODE, MANUFACTURING METHOD THEREOF, AND LITHIUM SECONDARY BATTERY

Resumen de: EP4708376A1

A positive electrode includes a positive electrode active material layer including a first positive electrode active material and a second positive electrode active material having different average particle diameters from each other. An average particle diameter D50 of the first positive electrode active material is larger than an average particle diameter D50 of the second positive electrode active material, the first positive electrode active material and the second positive electrode active material include single-particle type particles, and an interface resistance of the positive electrode having an SOC of 50% measured in a coin half-cell manufactured using the positive electrode is 6.5 Ω to 8.5 Ω, and an interface resistance of the positive electrode having an SOC of 10% measured in a coin half-cell manufactured using the positive electrode is 15 Ω to 19 Ω.

LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR

Resumen de: EP4708391A1

A lithium secondary battery includes: a positive electrode; a negative electrode; an electrolyte; and a separator. The positive electrode includes first and second positive electrode active materials having different average particle diameters (D₃₀). The average particle diameter (D₅₀) of the first positive electrode active material is larger than that of the second positive electrode active material. The first and second positive electrode active materials include single-particle type particles. The negative electrode includes a silicon-based negative electrode active material, and the lithium secondary battery has an IRF value of 1 to 1.4, defined by Equation 1 below. IRF=RpRn. In the Equation 1, each variable is the same as described above in this specification.

ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: EP4708430A1

An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the electrolyte are disclosed. The electrolyte may include a nonaqueous (e.g., water-insoluble) organic solvent, a lithium salt, a first additive represented by Chemical Formula 1, and a second additive represented by Chemical Formula 2. A more detailed description of the first additive and the second additive is provided in the present disclosure.

BLADE BATTERY AND BATTERY PACK INCLUDING SAME

Resumen de: EP4708422A1

Provided are a blade battery and a battery pack including the same. The blade battery includes: at least one positive plate, with a first tab and a second tab respectively disposed at two adjacent edges; a plurality of negative electrode plates, each having a third tab and a fourth tab respectively disposed at two adjacent edges, each of two opposite sides of each positive electrode plate being covered by one negative electrode plate, the first tab and the third tab being located at two opposite sides of the blade battery, and the second tab and the fourth tab being located at two opposite sides of the blade battery, respectively; a positive cover plate connected to the first tab and the second tab to form a positive electrode; and a negative cover plate connected to the third tab and the fourth tab to form a negative electrode.

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

Resumen de: EP4708394A1

A cathode active material for a lithium secondary battery, a cathode for a lithium secondary battery including the same, and a lithium secondary battery are provided. The cathode active material for a lithium secondary battery includes: a first cathode active material including a lithium-nickel metal oxide in the form of a single particle; and a second cathode active material including lithium manganese iron phosphate. Accordingly, a lithium secondary battery with improved cell safety and high energy density per unit cell volume may be achieved.

BATTERY DIAGNOSTIC DEVICE AND METHOD

Resumen de: EP4707838A1

A method for diagnosing a battery according to one aspect of the present disclosure includes: generating a battery profile representing a relationship between a capacity and a voltage of the target battery for each predetermined number of charge cycles or discharge cycles; obtaining a negative electrode profile estimating a relationship between a negative electrode capacity and a negative electrode potential of the target battery based on the battery profile; obtaining a diagnostic factor value representing an available capacity per unit area of the negative electrode based on the negative electrode profile; and diagnosing a state of the negative electrode based on diagnostic factor values sequentially obtained as the charge cycle or the discharge cycle is repeated.

METHOD OF MANUFACTURING ELECTRODE NOTCHING MOLD FOR SECONDARY BATTERY THROUGH GRINDING PROCESSING

Resumen de: EP4706844A1

Provided is a method of manufacturing a film notching mold (10) for a secondary battery pouch. The method includes processing each of an upper plate (101), a lower plate (102), a plurality of paired upper modules (130), a plurality of paired lower modules (140), a rounded press-fit plate (120), and an interference-fit portion (110) in a polyhedral frame shape in the form of a metal plate, coupling each of the upper plate (101), the lower plate (102), the plurality of paired upper modules (130), the plurality of paired lower modules (140), the rounded press-fit plate (120), and the interference-fit portion (110) by interference-fit, and performing linear driving-type pressing by forming a press-fit space.

SECONDARY BATTERY

Nº publicación: EP4708524A1 11/03/2026

Solicitante:

SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD

Resumen de: EP4708524A1

A secondary battery includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate. A case accommodates the electrode assembly and includes a safety vent. A foaming agent is provided inside of the case, with the foaming agent being configured to generate gas for opening the safety vent.