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BATTERY CELL, BATTERY, ELECTRIC DEVICE AND ENERGY STORAGE DEVICE

Absstract of: EP4723314A1

0001 Embodiments of this application provide a battery cell, a battery, an electric apparatus, and an energy storage apparatus. The battery cell includes a housing and an electrode assembly, where the electrode assembly is accommodated within the housing, the housing is cylindrical, a height of the housing is H<1>, and a radius of the housing is R<1>. The housing includes a first end wall, a second end wall, and a side wall, where the first end wall and the second end wall are oppositely disposed along a height direction of the housing, and the side wall connects the first end wall and the second end wall. A sum of thicknesses of the first end wall and the second end wall is a, and a thickness of the side wall is b, satisfying: (R<1>-b)<2>*(H<1>-a)/(R<1>2 *H<1>)≥96%. Thus, the volumetric energy density of the battery cell is increased under a same chemical material system.

NEGATIVE ELECTRODE BODY AND METHOD FOR MANUFACTURING NEGATIVE ELECTRODE BODY

Absstract of: EP4723205A1

The present invention is a negative electrode body including a negative electrode including a negative electrode current collector having a roughened surface, a negative electrode active material layer provided on the negative electrode current collector, and an ion-conductive layer having lithium-ion conductivity and disposed on a surface of the negative electrode active material layer, and a solid electrolyte layer disposed contiguous to the ion-conductive layer, in which the negative electrode active material layer comprises negative electrode active material particles having a compound containing lithium, silicon, and oxygen, the negative electrode active material particles are represented by SiO_x1Li_y1, and a value of "x1" is more than 0.8 and 1.2 or less, and a value of "y1" is 0.5 or more and 3.4 or less. This provides the negative electrode body having the negative electrode capable of significantly increasing capacity while maintaining excellent battery characteristics, and suppressing expansion at full charge.

CERAMIC SLURRY COMPOSITIONS

Absstract of: US2025360356A1

In a first step, a time series of images are resized to a smaller dimension, and the smaller images are fed into a first classifier that is trained to classify as a ball any objects in the smaller images that resemble a ball. In a second step, the smaller images are mapped back to the series of images, and regions in the series of images that contain the mapped ball are cropped from the series of images. The mapped ball is shifted based on a velocity of the mapped ball in the cropped regions, and the second classifier regresses center coordinates and a radius of the shifted ball, classifies whether the shifted ball is the ball based on a confidence score, and updates the shifted ball in the cropped regions based on the regressed center coordinates and radius.

POWER STORAGE DEVICE

Absstract of: EP4723263A1

This power storage device (10) is provided with: an electrode body (14) which is obtained by winding a positive electrode (11), a negative electrode (12), and a separator (13); a polygonal tubular case (20) which has a polygonal tubular part and an opening provided at one end of the tubular part, and which houses the electrode body (14) and an electrolytic solution; and a polygonal sealing body (30) which closes the opening of the case (20). A groove-shaped thin part (34A) which releases a gas inside the case (20) to the outside is provided at a corner of a bottom surface part (20B) of the case (20) or at a corner of the sealing body (30).

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Absstract of: EP4723288A1

0001 A disclosed cylindrical non-aqueous electrolyte secondary battery includes: an electrode group formed by spirally winding a positive electrode, a negative electrode, and a separator; a non-aqueous electrolyte; an outer casing can; a positive electrode lead; and a negative electrode lead. One end of the negative electrode lead is connected to a first negative electrode current collector exposed portion in which no negative electrode material mixture layer is provided. Another end of the negative electrode lead is electrically connected to the outer casing can. A second negative electrode current collector exposed portion provided in at least a portion of an outermost circumference of the negative electrode is in contact with an inner surface of the outer casing can. In a stretched-out state of the electrode group, the negative electrode lead is provided at a position between a first position of the negative electrode that faces a winding start end of the positive electrode and a second position of the negative electrode that faces the positive electrode lead. The positive electrode includes a notch at each of two positions that face the negative electrode lead across the separator. A thickness Td of the negative electrode lead is larger than a thickness Tn of the negative electrode.

CATHOD ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR

Absstract of: EP4723211A1

According to the present embodiment, a positive electrode active material for a lithium secondary battery may comprise: a lithium manganese-rich first positive electrode active material represented by Chemical Formula 1 below; and a high-nickel single-particle second positive electrode active material represented by Chemical Formula 2 below, and an average particle size (D50₁) of the lithium manganese-rich first positive electrode active material may be greater than an average particle size (D50₂) of the high-nickel single-particle second positive electrode active material.        Chemical Formula 1     Li_1+x1(Ni_(1-a1-b1)Co_a1Mn_b1)O₂(where -0.5 ≤ x₁ ≤ 0.5, 0 ≤ a₁ ≤ 0.5, and 0.5 ≤ b₁ ≤ 1.)        Chemical Formula 2     Li_1+x2(Ni_(1-a2-b2-c2)Co_a2Mn_b2M_c2)O₂(where -0.5 ≤ x₂ ≤ 0.5, 0 ≤ a₂ ≤ 0.2, 0 ≤ b₂ ≤ 0.1, 0 ≤ c₂ ≤ 0.03, and M is at least one element selected from Fe, Cr, Ti, Zn, V, Al, Mg, and Zr.)

SECONDARY BATTERY, BATTERY ASSEMBLY, AND ELECTRONIC DEVICE

Absstract of: EP4723291A1

A secondary battery (1), a battery assembly (100), and an electronic device (1000) are provided. The secondary battery (1) includes: a housing (10) and an electrode assembly (20) accommodated in the housing (10). The electrode assembly (20) includes a wound structure (201) formed by a positive electrode sheet (21), a separator (22), and a negative electrode sheet (23). A positive electrode current collector (211) of the positive electrode sheet (21) includes a positive electrode coated region (212) and a positive electrode uncoated region (213). A negative electrode current collector (231) of the negative electrode sheet (23) includes a negative electrode coated region (232) and a negative electrode uncoated region (233). A part of the positive electrode uncoated region (213) is bent to form a stacked positive electrode tab region (2131). A part of the negative electrode uncoated region (233) is bent to form a stacked negative electrode tab region (2331).

POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, BATTERY AND ELECTRIC DEVICE

Absstract of: EP4723239A1

A positive electrode active material, a method for preparing a positive electrode active material, a positive electrode plate, a battery, and a power consuming apparatus. The positive electrode active material includes a core and a first coating layer. The core includes Na_xR_y(PO₄)_z(P₂O₇)_k. 1≤x≤7. 1≤y≤4. 1≤z≤4. 1≤k≤4. R includes at least one of Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Sn, Hf, Ta, W, or Pb. The first coating layer is formed on at least a part of the core. The first coating layer includes MaOb. M includes at least one of Ca, Bi, Ba, Ti, Al, Nb, Mg, Fe, Cu, Zn, Mn, Ni, or Co. 1≤a≤7. 1≤b≤12.

BUSBAR ASSEMBLY AND BATTERY PACK INCLUDING SAME

Absstract of: EP4723361A1

A busbar assembly according to one embodiment of the present disclosure comprises: a busbar; an insulating member that surrounds an outer surface of the busbar; and a foamed silicone part located between the outer surface of the busbar and the insulating member, wherein both end parts of the insulating member are spaced apart from each other, so that the foamed silicone part is exposed to the outside between the end parts of the insulating member.

SULFIDE-BASED SOLID ELECTROLYTE AND METHOD FOR PREPARING SAME

Absstract of: EP4723276A1

0001 The present disclosure relates to a sulfide-based solid electrolyte including an argyrodite-based compound that contains lithium, phosphorus, sulfur, a halogen element, and a Group 13 element and has an argyrodite crystal structure. The sulfide-based solid electrolyte of the present disclosure may exhibit enhanced electrochemical stability and atmospheric stability through substitution of some in the crystal structure with the Group 13 element.

COMPOSITE POSITIVE ELECTRODE ACTIVE MATERIAL, MANUFACTURING METHOD THEREOF, AND ALL-SOLID-STATE BATTERY COMPRISING SAME

Absstract of: EP4723216A1

The present disclosure relates to a composite cathode active material comprising an active material, a first electrolyte layer disposed on the active material, and a second electrolyte layer disposed on the first electrolyte layer, wherein the first electrolyte layer is present in an amount of 2.5 wt% to 5.0 wt% based on the active material, wherein the composite cathode active material of the present disclosure includes a thin and uniform electrolyte coating layer on its surface, thereby improving electrochemical characteristics and rate capability of an all-solid-state battery.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Absstract of: EP4723217A2

A secondary battery, including a negative electrode plate and an electrolyte, where the negative electrode plate includes a negative electrode active material layer. The negative electrode active material layer includes graphite and a silicon-carbon material, and an average sphericity of the silicon-carbon material is 0.81 to 0.95. The electrolyte includes ethylene carbonate, propylene carbonate, ethyl propionate and propyl propionate, where based on a mass of the electrolyte, a mass percentage of the ethylene carbonate is a%, a mass percentage of the propylene carbonate is b%, a mass percentage of the ethyl propionate is c%, a mass percentage of the propyl propionate is d%, and (a+b)/(c+d) is in a range of 0.23 to 1.51.

LITHIUM SECONDARY BATTERY, AND BATTERY MODULE AND BATTERY PACK INCLUDING SAME

Absstract of: EP4723249A1

A lithium secondary battery according to the present invention includes: an electrode assembly having a structure in which a plurality of electrodes and a plurality of separators are alternately stacked; and a battery case for receiving the electrode assembly, wherein the electrodes include an electrode current collector and an electrode active material layer disposed on the electrode current collector, and at least one of the plurality of electrode current collectors includes a glass layer, a first metal layer disposed on one surface of the glass layer, and a second metal layer disposed on the other surface of the glass layer.

ELECTRONIC DEVICE AND OPERATION METHOD THEREOF

Absstract of: EP4723425A1

0001 This electronic device may comprise: a connector for a connection to an external power source; a charging circuit for converting the power provided through the connector; a battery for receiving the power through the charging circuit; and a controller operatively and/or electrically connected to the charging circuit. The controller can be configured to: identify information related to charging; identify a first voltage conversion ratio of the charging circuit on the basis of the information related to charging; control the charging circuit so as to convert, on the basis of the first voltage conversion ratio, the power provided through the connector; identify, on the basis of the information related to charging, a second voltage conversion ratio that differs from the first voltage conversion ratio of the charging circuit while the battery is being charged on the basis of the first voltage conversion ratio; and control the charging circuit so as to convert, on the basis of the second voltage conversion ratio, the power provided through the connector.

ADHESIVE TAPE ATTACHING DEVICE AND ADHESIVE TAPE ATTACHING METHOD

Absstract of: EP4723259A1

Embodiments of this application disclose an adhesive tape attaching device and an adhesive tape attaching method. The device includes: an adhesive tape attaching assembly, where the adhesive tape attaching assembly includes a first adhesive tape attaching mechanism and a second adhesive tape attaching mechanism; and a control assembly configured to control the adhesive tape attaching assembly to move along a first direction toward a to-be-attached workpiece. The first adhesive tape attaching mechanism is configured to adhere a first portion of an adhesive tape to a region of a first wall of the to-be-attached workpiece close to a second wall of the to-be-attached workpiece, the second adhesive tape attaching mechanism is configured to adhere a second portion of the adhesive tape to a region of the second wall close to the first wall, the first portion is connected to the second portion, and the first wall intersects with the second wall. The adhesive tape attaching device and the adhesive tape attaching method provided by the embodiments of this application can improve adhesive tape attachment efficiency.

COMPOSITE POLYMER ELECTROLYTE, METHOD FOR MANUFACTURING SAME, AND ALL-SOLID-STATE BATTERY COMPRISING SAME

Absstract of: EP4723277A1

According to the present invention, a composite polymer electrolyte having excellent ionic conductivity as well as mechanical strength, and a method for manufacturing same can be provided. In addition, according to the present invention, the composite polymer electrolyte is particularly applied to an all-solid-state battery using lithium metal or lithium alloy as a negative electrode, thereby suppressing the generation of lithium dendrites and improving lifespan characteristics.

POUCH CELL

Absstract of: EP4723341A1

0001 The present disclosure relates to a pouch cell for preventing or reducing the ingress of external moisture into a pouch through an area where gas inside the pouch is released to the atmosphere. The pouch cell according to the present disclosure includes an electrode assembly including a positive electrode, a negative electrode and a separator, a pouch accommodating the electrode assembly and having a hole, and a gas release film attached to the pouch to cover the hole and configured to allow gas to pass through, wherein the pouch includes a gas release portion having the hole and an outer packaging portion connected to the gas release portion, and wherein the gas release portion and the outer packaging portion have a stepped shape with each other.

BATTERY MANUFACTURING SYSTEM

Absstract of: EP4723181A1

0001 A battery manufacturing system includes an electrode processing device for performing the electrode process; and a roll map creation device for creating a roll map including coordinate data indicative of the location of an electrode and measurement and inspection data generated by the electrode process performed on the electrode and matched to the coordinate data. The electrode processing device includes an unwinder configured to unwind an electrode from a first electrode roll; a rewinder configured to wind the electrode onto a second electrode roll; an inspection measuring instrument for collecting the measurement and inspection data of the electrode being transferred; and a first encoder provided on one side of the electrode being transferred, and configured to detect a speed of movement of the electrode by irradiating the electrode with a laser, and the roll map creation device is configured to receive input of a defect location of the electrode and create an electrode removal section corresponding to the defect location, the electrode removal section being created based on data detected by the first encoder.

WATER PRESSURE MEASURING DEVICE AND WATER PRESSURE ANALYZING SYSTEM FOR BATTERY CLEANING PROCESS EQUIPMENT

Absstract of: EP4723363A1

A water pressure measuring device according to an embodiment of the present invention is a device for measuring the water pressure of a cleaning solution sprayed from battery cleaning process equipment. The water pressure measuring device may include: a housing having a shape corresponding to the housing of a battery cell and having an inner space; a sensor assembly disposed on the outer surface of the housing to sense the water pressure of the cleaning solution; and a control unit disposed in the inner space of the housing to collect water pressure sensing data from the sensor assembly.

SINGLE CRYSTAL POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND LITHIUM-ION BATTERY

Absstract of: EP4723210A1

The present disclosure relates to the field of lithium-ion batteries and discloses a single crystal cathode material, a preparation method thereof, and a lithium-ion battery. The single crystal cathode material has a size distribution B₉₀=(P₉₀-P₁₀)/P₅₀ of single crystal particles satisfying 0.9≤B₉₀≤1.4. A Young's modulus E of the cathode material, measured by Atomic Force Microscopy, satisfies 100 GPa≤E≤200 GPa. The single crystal particles of the single crystal cathode material have a specific particle size distribution, enabling the single crystal cathode material to have a high compaction density, and to have a higher Young's modulus allowing the single crystal cathode material to withstand a higher rolling force during the preparation of the battery, thereby improving the volume energy density of the lithium-ion battery including the cathode material.

METHOD FOR MANUFACTURING ELECTRODE ASSEMBLY

Absstract of: EP4723266A1

The present invention relates to a method for manufacturing an electrode assembly, and more particularly, to a method for manufacturing an electrode assembly, which is capable of improving limitations of conventional stacking technologies to secure a degree of freedom in cell design (a degree of freedom in tab position design, etc.), solving the problem of folding of a separator, and preventing a problem of non-cutting of the separator due to a process tolerance.

COOLING STRUCTURE OF BATTERY PACK

Absstract of: EP4723307A1

Disclosed herein relates to a cooling structure of a battery pack including: a heat sink including a plurality of cooling flow paths; a plurality of battery assemblies mounted longitudinally and/or transversely on the heat sink; and a plurality of electrical components mounted on the heat sink, wherein at least one of the plurality of electrical components has an insulating oil sealed therein, and heat accumulating in the insulating oil is discharged to the outside via a cooling flow path of the heat sink.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Absstract of: EP4723348A1

0001 The present application provides a battery cell, a battery, and an electrical apparatus, which belongs to the technical field of batteries. The battery cell includes a shell, the shell has a first wall and a second wall connected to each other, the first wall is provided with a first groove, the first wall is configured to be capable of rupturing along at least a part of the first groove during pressure relief of the battery cell, so as to release the internal pressure of the battery cell, the second wall is located on one side of the first wall in a first direction, the first groove includes a first groove segment, and the first groove segment and the second wall are arranged in the first direction. The first wall is also provided with a second groove, in the first direction, the second wall has a first outer surface facing away from an interior of the shell, and a projection of the second groove in a thickness direction of the first wall is located between the first outer surface and a projection of the first groove segment in the thickness direction of the first wall, so that the second groove can absorb the excess material from extrusion of the first groove segment during a forming process of the first groove segment, so as to alleviate a phenomenon that the battery cell partially arches or planeness of the first wall is reduced.

MAGNETIC ALIGNMENT APPARATUS AND MAGNETIC ALIGNMENT METHOD OF ELECTRODE ACTIVE MATERIAL IN ELECTRODE USING SAME

Absstract of: EP4723182A1

The present disclosure relates to a magnetic alignment device and a method of magnetic alignment of electrode active material in electrode using the same. The magnetic alignment device has a structure that controls the directionality of the N poles and S poles of each of a plurality of unit magnets included in a first magnetic portion and a second magnetic portion to magnetize magnetic members positioned between the unit magnets, and applies a magnetic field to electrode slurry through the magnetized magnetic members. Therefore, the magnetic alignment device can perform magnetic alignment of electrode active material in an electrode with high efficiency during manufacturing of electrodes for lithium secondary batteries. In addition, as the magnetic alignment device can easily control the application of a magnetic field depending on the magnetization of the magnetic members, it has the advantages of excellent workability and high economic efficiency in electrode manufacturing.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Nº publicación: EP4723347A1 08/04/2026

Applicant:

CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]

Absstract of: EP4723347A1

0001 The present application provides a battery cell, a battery, and an electrical device. The battery cell includes a shell and a pressure relief component. The shell has a wall portion, and the pressure relief component is arranged on the wall portion. The pressure relief component includes a first weak portion and a second weak portion, the first weak portion defines a predetermined pressure relief region, the pressure relief component is configured to be capable of cracking along at least a part of the first weak portion during pressure relief of the battery cell, and the second weak portion is configured to guide at least a part of the predetermined pressure relief region to flip over to open the at least a part of the predetermined pressure relief region. The first weak portion includes a first weak section, and the first weak section and the second weak portion are arranged at an interval in a first direction. In the first direction, a minimum distance between the first weak section and the second weak portion is L, and a cross-sectional area of the second weak portion perpendicular to its extension direction is S, meeting: 3.3 mm≤L≤48 mm, and 0.008 mm<2>≤S≤0.45 mm<2>. In this way, the battery cell is capable of achieving rapid pressure relief, and has a high reliability.