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1478
results.
Updated on
25/12/2025 [07:16:00]
Results 675 to 700 of 1478
Absstract of: EP4664615A1
In a secondary battery, a first electrode assembly (201) and a second electrode assembly (202) are overlapped with each other. A first electrode tab (250) and a third electrode tab (280) each connected to a first electrode (240) and respectively included in the first electrode assembly (201) and the second electrode assembly (202) are joined to a first current collector (431). The first current collector (431) is constituted of a first stack in which a plurality of metal plates (4300) are stacked. A second electrode (210) of each of the first electrode assembly (201) and the second electrode assembly (202) has a polarity different from that of the first electrode (240). A second electrode tab (220) and a fourth electrode tab (270) each connected to the second electrode (210) are joined to a second current collector (410).
Absstract of: EP4664543A2
A positive electrode active material comprises a first active material and a second active material having an average particle size (D50) smaller than an average particle size (D50) of the first active material. The first active material is a lithium-(transition metal) composite oxide containing Ni at 75 mol% or more and Ti at 0.5 to 2.8 mol% relative to a total number of moles of metallic element except Li. The second active material is a lithium-(transition metal) composite oxide containing Ni at 75 mol% or more relative to a total number of moles of metallic element except Li. A content of Ti in the second active material is 0.1 mol% or less relative to the total number of moles of metallic element except Li. Ni disorder of the first active material is from 2.1 to 2.6%, and Ni disorder of the second active material is 2.0% or less.
Absstract of: EP4664547A1
An anode active material for a sodium ion energy storage device with improved volumetric capacity, capacity retention, and coulombic efficiency and the method thereof is disclosed. The anode active material comprises an alloying element. The anode active material may further comprise a carbon active material. The alloying element may be selected from phosphorus (P), germanium (Ge), tin (Sn), antimony (Sb), lead (Pb), and bismuth (Bi). The anode comprising the anode active material shows improved capacity retention.
Absstract of: EP4664656A1
The present disclosure relates to a separator substrate, a separator, an electrode assembly and an electrochemical device, and the separator substrate according to an embodiment of the present disclosure has a predetermined range of surface roughness Sa. Accordingly, the separator using the same maintains high adhesion strength, and has improved resistance characteristics by reducing an amount of slurry impregnation when forming a porous coating layer.
Absstract of: EP4664581A1
Provided in the present application are a battery cell, a battery, and an electrical apparatus. The battery cell comprises an electrode assembly which comprises an electrode plate and a separator. The electrode plate comprises a current collector and a film layer which is disposed on at least one surface of the current collector and contains an active material and a liquid absorption polymer, and the electrode plate satisfies: v/λ≥1.2, wherein v represents the liquid absorption rate of the film layer and has a unit of mg/s, and λ represents the porosity of the film layer. The separator comprises a liquid-retaining polymer, and the separator satisfies: (m2-M)/(m1-M) ≥ 25%, wherein M represents the mass of the separator before the separator absorbs an electrolyte solution, and has a unit of g; m1 represents the mass of the separator weighed at ambient pressure after the separator is soaked in the electrolyte solution for 2 h, and has a unit of g; and m2 represents the mass of the separator weighed at a pressure of 10000 N at ambient pressure after the separator is soaked in the electrolyte solution for 2 h, and has a unit of g.
Absstract of: EP4664652A1
The present application provides a separator, a battery cell, a battery, and an electrical apparatus. The separator comprises a separator body and a polymer layer provided on at least one surface of the separator body. The separator satisfies: v/λ>5.00, wherein λ represents the porosity of the separator, v represents the liquid absorption rate of the separator, and the unit of the liquid absorption rate is mg/s.
Absstract of: EP4664651A1
A separator, a battery cell (5), a battery, and an electric device (6). The separator comprises a liquid retention polymer, and the separator satisfies the following formula: (m2-M)/(m1-M)≥25%, wherein M represents the mass of the electrolyte not absorbed by the separator, and the unit thereof is g; m1 represents the mass of the separator weighed under an ambient pressure after having been immersed in the electrolyte for 2 h, and the unit thereof is g; and m2 represents the mass of the separator weighed under a pressure of 10,000 N in the ambient pressure after having been immersed in the electrolyte for 2 h, and the unit thereof is g.
Absstract of: EP4664571A1
The present application provides a battery cell, a battery, and an electrical apparatus; the battery cell comprises an electrode assembly and an electrolyte; the electrode assembly comprises a first electrode plate, a second electrode plate, and a separator; the polarities of the first electrode plate and the second electrode plate are opposite; the separator is arranged between the first electrode plate and the second electrode plate; at least one of the first electrode plate, the second electrode plate, and the separator comprises a lyophilic polymer; and the battery cell satisfies the following formula (I): 0.01%≤yM−M′≤15%
Absstract of: EP4664094A1
A device for testing the dryness of an electrode according to the present disclosure comprises: an electrode substrate in which an electrode slurry is applied onto a collector, a standard sample, a light emitting unit that includes a light source and a bifurcated optical fiber connected to the light source, and selectively irradiates light to any one of the electrode substrate and the standard sample through one optical fiber of the bifurcated optical fiber, a light receiving unit that includes a spectrometer that selectively receives light reflected from any one of the electrode substrate and the standard sample and analyzes the reflected light, and a control unit that corrects at least one of the light source and the spectrometer based on the analysis results of the spectrometer.
Absstract of: EP4664593A1
Disclosed in embodiments of the present application are an electrolyte, a lithium-ion battery, and an electric device. The electrolyte comprises a metal ion including at least one of K+, Rb+, and Cs+; and the molar concentration CM of the metal ion in the electrolyte satisfies: 0.03M ≤ CM. When applied in lithium-ion batteries, the electrolyte can effectively reduce the risk of lithium plating on the negative electrode and improve the safety performance of the lithium-ion batteries.
Absstract of: EP4664614A1
A prismatic power storage device (1; 101) includes a case (4) having a case body (5) and a rectangular plate-shaped lid (6;106), an electrode body (2) housed in the case (4), a positive terminal member (7;107) extending out through a positive-electrode insert hole (6p,106p) provided in the lid (6;106), and a negative terminal member (8;108) extending out through a negative-electrode insert hole (6n;106n). The lid (6;106) includes a first safety valve (6s1;106s1) provided in a center (6C;106C) of the lid (6;106) and to be opened at a first operating pressure (P1), a second safety valve (6s2;106s2) provided on one side (LH1) relative to a central region and to be operated at a second operating pressure (P2) higher than the first operating pressure (P1), and a third safety valve (6s3;106s3) provided on the other side (LH2) relative to the central region and to be operated at a third operating pressure (P3) higher than the first operating pressure (P1).
Absstract of: EP4664627A1
The present invention relates to a secondary battery packaging interleaf and a secondary battery packaging box, and more specifically, relates to a secondary battery packaging interleaf and a secondary battery packaging box, capable of preventing damage to recognition codes of a plurality of accommodated cylindrical battery cells.In order to achieve the above-described objects, according to one example of the present invention, it is possible to provide a secondary battery packaging interleaf comprising a partition wall forming multiple accommodation spaces, in which multiple cylindrical battery cells with printed recognition codes are each accommodated, and provided with a contact prevention portion to be in no contact with the recognition code printed on the outer peripheral surface of the accommodated cylindrical battery cell, and a packaging box comprising the same.
Absstract of: EP4664626A1
A battery pack having a pack case including a lower case and an upper case that define an inner space, a plurality of battery cells in the inner space, a separation sheet between a bottom of the pack case and the plurality of battery cells, and a thermally conductive resin layer between the separation sheet and the plurality of battery cells, in which the separation sheet is coupled to the thermally conductive resin layer, and a first adhesive strength per unit area between the separation sheet and the thermally conductive resin layer is lower than a second adhesive strength per unit area between the pack case and the thermally conductive resin layer.
Absstract of: EP4664553A1
The present invention relates to a negative electrode active material, a negative electrode slurry, a negative electrode comprising same, and a secondary battery comprising the negative electrode, the negative electrode active material comprising a silicon-carbon composite, a carbon layer provided on at least a portion of the silicon-carbon composite, and a coating layer of a catechol derivative or a gallol derivative provided on at least a portion of at least one of the silicon-carbon composite and the carbon layer.
Absstract of: EP4664646A1
The present technology provides a separation structure including a plurality of cell accommodation spaces separated from each other in a first direction and a plurality of venting channels separated from each other in the first direction, and a plurality of battery cells accommodated in the plurality of cell accommodation spaces of the separation structure, in which each of the plurality of venting channels is provided in a corresponding cell accommodation space among the plurality of cell accommodation spaces, and each of the plurality of venting channels extends in a second direction perpendicular to the first direction to guide a gas in the second direction.
Absstract of: EP4664540A1
A composition for coating a negative electrode dam according to one embodiment of the present disclosure includes a cellulose-based compound.In the composition for coating a negative electrode dam according to one embodiment of the present disclosure, the surface tension is high to the level of a negative electrode slurry, thereby suppressing the occurrence of fat-edge of the negative electrode. Furthermore, the dam coating layer formed from the composition for coating a negative electrode dam shortens the sliding length of the negative electrode active material layer, thereby reducing the risk of NP-ratio inversion of the lithium secondary battery.
Absstract of: EP4664539A1
A composition for coating a negative electrode dam according to one embodiment of the present disclosure is in surface contact with an end of the negative electrode active material layer and includes a hydrophobic powder, a cellulose-based compound, a rubber-based binder, and inorganic particles.The composition for coating a negative electrode dam has excellent surface tension and adhesion, thereby inhibiting the occurrence of a fat-edge of the negative electrode, and the dam coating layer formed from the composition for coating a negative electrode dam has the effect of reducing the sliding length of the negative electrode active material layer.
Absstract of: EP4664574A1
An assembly method and an assembly apparatus. The assembly method is used for assembling a battery unit; the battery unit comprises a housing and a plurality of battery cell assemblies connected in series and/or in parallel and accommodated in the housing; each battery cell assembly comprises an active substance coating part and a conductive part; the conductive part is located at one end of the battery cell assembly in the first direction and is used for electrically connecting the active substance coating part and an electrode post of the battery unit; the assembly method comprises the following steps: stacking the plurality of battery cell assemblies in a second direction, the second direction being perpendicular to the first direction; electrically connecting the conductive pats of the plurality of battery cell assemblies; and placing the plurality of battery cell assemblies into the housing.
Absstract of: EP4664591A1
Provided in this application are an electrolyte solution, a battery cell, a battery, and a power consuming apparatus. The electrolyte solution includes a first anion represented by Formula (I), where X, a, b, R<sup>1</sup>, and R<sup>2</sup> are respectively as defined herein.
Absstract of: EP4664583A1
A battery cell, a battery and an electrical apparatus, relating to the technical field of batteries. The battery cell comprises a casing, having a first opening; a first end cap assembly, used for covering the first opening, the first end cap assembly comprising protruding structures and a first electrode lead-out component; an electrode assembly, accommodated in the casing, the electrode assembly comprising a main body part and tabs extending from the main body part; and an isolation component, at least partially provided between the first electrode lead-out component and the main body part, wherein the isolation component comprises opening structures, reinforcement structures and isolation plates, the opening structures are protrudingly arranged on the surfaces of the isolation plates facing the first end cap assembly and are snap-fitted with the protruding structures, and the reinforcement structures are connected to the outer side walls of the opening structures, thus improving the reliability of the battery cell.
Absstract of: EP4664664A1
A battery cell (20), a battery (100), and an electric device. The battery cell (20) comprises: an electrode lead-out portion (201), used for leading out the electric energy of the battery cell (20); electrode assemblies (22), each comprising a main body (222) and tabs (221), wherein each tab (221) comprises a transition portion (2211) and a connection portion (2212), the transition portion (2211) is bent relative to the connection portion (2212), the transition portion (2211) is connected between the main body (222) and the connection portion (2212), and the connection portion (2212) is adapted to be connected to the electrode lead-out portion (201); and insulating members (24), each arranged on the bent outer side of the corresponding tab (221), wherein each insulating member (24) comprises a first insulator (241), a second insulator (242), and a third insulator (243), the second insulator (242) is connected between the first insulator (241) and the third insulator (243), the first insulator (241) is fixed to the main body (222), the third insulator (243) is fixed to the electrode lead-out portion (201), and at least part of the transition portion (2211) is not fixed to the insulating member (24). The battery cell (20), the battery (100), and the electric device are beneficial to reducing the risk of tearing the tabs (221).
Absstract of: EP4664668A1
The present application provides a battery cell (20), a battery (100), and an electrical device, where the battery cell (20) includes a case (22) and an insulating protective layer (24), the insulating protective layer (24) being disposed on an inner wall of the case (22). In the battery cell (20) provided in the embodiments of the present application, the insulating protective layer (24) is disposed on the inner wall of the case of the battery cell (20), where the insulating protective layer (24) can separate the case (22) from the electrolyte solution inside the case (22), so as to reduce the probability of contact between the case (22) and the electrolyte solution, thereby lowering the probability of corrosion breakdown of the case (22).
Absstract of: EP4664534A1
A battery manufacturing apparatus includes a negative electrode notching device configured to assign a first electrode ID to individual notched electrodes; a first cutting device for separating individual negative electrodes assigned the first electrode ID; a positive electrode notching device configured to assign a second electrode ID to individual notched electrodes; a second cutting device for separating individual positive electrodes assigned the second electrode ID; a stacking device configured to stack the individual positive electrodes and the individual negative electrodes with a separator therebetween; and a roll map creating device.
Absstract of: EP4664134A1
A connector inspection device according to an embodiment of the present disclosure, which is an inspection device connected to a connector of a battery module and inspecting the performance of the connector, may include a first body portion; a second body portion having one surface connected to one surface of the first body portion; a third body portion that has one surface connected to the other surface of the second body portion and includes a detection member connected to the connector and receiving an electrical signal from the connector; and a fourth body portion having one surface facing the other surface of the third body portion, having the detection member located therein, and being movable toward the third body portion, wherein the second body portion, the third body portion and the fourth body portion may be movable along one surface of the first body portion.
Nº publicación: EP4664099A1 17/12/2025
Applicant:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
Absstract of: EP4664099A1
A testing apparatus (400) and a battery production device, which belong to the technical field of batteries. The testing apparatus (400) comprises an X-ray source (410), a linear array detector (420) and a carrying platform (430). The linear array detector (420) is opposite an emission port of the X-ray source (410), the carrying platform (430) can move in a first direction Y, a movement trajectory of the carrying platform (430) passes between the X-ray source (410) and the linear array detector (420), and the carrying platform (430) is configured to carry a battery (500) to be tested. The linear array detector (420) comprises a plurality of columns of sensing regions (421), which are arranged in the first direction Y. The testing apparatus (400) provided can test the battery (500) and improve the testing efficiency.
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