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1357
results.
Updated on
04/05/2026 [07:57:00]
Results 600 to 625 of 1357
Absstract of: EP4734274A2
The present disclosure provides a battery module having more improved safety than the conventional battery pack and capable of protecting the battery cells more reliably.
Absstract of: EP4734174A1
The present application discloses a graphite composite material and a preparation method thereof, a negative electrode active material, a secondary battery and an electrical device. The graphite composite material includes a core and a coating layer located on a surface of the core; a material of the core includes graphite, and a material of the coating layer includes a nitrogen-doped porous alumina-carbon composite material. The graphite composite material provided by the present application improves the first-cycle efficiency of a graphite material and enhances the rate performance of a battery.
Absstract of: EP4732984A1
Disclosed are a multi-layer tabs welding method for a battery and a battery, comprising steps: S1: conducting continuous scanning welding with laser on multi-layer tabs and a to-be-welded workpiece to form a strip-like or block-like welding bead; S2: repeating the step S1 to form a plurality of discontinuous welding beads at a connection between the multi-layer tabs and the to-be-welded workpiece. (FIG. 1)
Absstract of: EP4734246A1
0001 The present application provides an electrochemical apparatus and an electric device. The electrochemical apparatus includes a housing and an electrode lead-out assembly, a first through hole is provided on a wall portion of the housing, the electrode lead-out assembly includes an electrode terminal, a connecting piece, and at least one sealing member, the connecting piece is a metal piece, the connecting piece is connected to the wall portion, a second through hole is provided on the connecting piece, the electrode terminal runs through the second through hole, and the sealing member is disposed between the connecting piece and the electrode terminal. This can reduce the processing difficulty of the electrode lead-out assembly, improve the versatility of the electrode lead-out assembly, and enhance the sealing effect of the electrochemical apparatus.
Absstract of: EP4733782A1
0001 A battery SOC estimating apparatus according to an embodiment of the present disclosure includes a charging and discharging unit configured to receive a control signal including C-rate information and charge and discharge a battery at a C-rate included in the control signal; a measuring unit configured to measure a voltage of the battery in a charging and discharging process of the battery; and a control unit configured to transmit the control signal to the charging and discharging unit, change the C-rate included in the control signal whenever the voltage value measured by the measuring unit reaches a preset threshold value, and estimate SOC of the battery based on the result of comparing the changed C-rate with a preset cutoff value.
Absstract of: EP4734176A1
0001 A positive electrode material, a positive electrode sheet and a lithium ion battery. The positive electrode material is obtained by mixing a lithium manganese iron phosphate material and a ternary material. During mixing, a mass ratio n of the ternary material to the lithium manganese iron phosphate material in the positive electrode material is determined according to a range of a ratio k of an actual specific capacity of the ternary material to an actual specific capacity of the lithium manganese iron phosphate material. Specifically, when k is less than or equal to 1.34, n is 1 to 9; and when k is greater than 1.34, n is 0.1 to 1, so as to avoid the following situations: due to an improper mixing ratio of the two materials, a lithium ion battery prepared using the positive electrode material is prone to problems such as low capacity retention, low cycle retention, and severe gas generation during cycling. The lithium ion battery prepared from the positive electrode material may have high energy density, high capacity retention rate, good cycle performance and good safety performance at the same time.
Absstract of: EP4734232A2
A battery module of the present technology includes a battery cell assembly formed by stacking two or more columns of longitudinal unit cells, each of which is composed of two or more battery cells arranged in a line in a longitudinal direction and connected, in a thickness direction of the battery cell, a hollow center guard disposed at a connection position of end portions of the battery cells, which face each other in the longitudinal direction, in the longitudinal unit cell, and a module case in which the battery cell assembly and the hollow center guard are accommodated, wherein a first venting hole communicating with a hollow of the hollow center guard is provided in a sidewall of the hollow center guard, and a second venting hole communicating with the hollow of the hollow center guard is provided in the module case configured to cover an upper portion of the hollow center guard. The present technology also relates to a battery pack including the battery module.
Absstract of: EP4734215A2
0001 The present application discloses an electrolyte solution, a secondary battery, a battery module, a battery pack and a powered device. The electrolyte solution comprises an organic solvent and an additive, the organic solvent comprises a first organic solvent shown in Formula 1, and the additive comprises a first additive selected from one or more of compounds represented by Formula 2A and Formula 2B. In Formula 1, R<1> and R<2> are each independently one of C1-C3 alkyl and C1-C3 haloalkyl; in Formula 2A, R<21>, R<22>, R<23>, and R<24> are each independently one of single bond and methylene; in Formula 2B, R<31>, R<32>, R<33>, and R<34> are each independently one of a single bond and methylene, and R<4> is one of a single bond, -O-, C1-C3 alkylene, C1-C3 haloalkylene, and C1-C3 oxaalkylene. The secondary battery of the present application has good fast charging performance while ensuring long cycle life and storage life.
Absstract of: CN220537118U
The utility model relates to a substrate conveying system and a coating system comprising the same. A base material conveyance system is provided with: a drive roller (1) capable of driving a base material (S) to move in a base material conveyance direction; a first set of auxiliary rollers including a first roller (2) and a second roller (3) and located downstream of the driving roller in the substrate conveying direction; a second set of auxiliary rollers including a third roller (10) and a fourth roller (7) and located downstream of the first set of auxiliary rollers in the substrate conveyance direction; the buffering double-roller assembly (6) comprises a first buffering roller (61) and a second buffering roller (62), the first buffering roller is located between the first roller and the second roller of the first set of auxiliary rollers in the conveying direction of the base material, and the second buffering roller is located between the third roller and the fourth roller of the second set of auxiliary rollers in the conveying direction of the base material; the buffering double-roller assembly (6) can move relative to the original position, so that the part, between the first roller and the fourth roller, of the base material can move front and back in the conveying direction of the base material.
Absstract of: WO2024100351A1
The invention relates to a defect detection method for detecting a defect in an electrode (1) that is intended to be included in a battery when the electrode (1) is produced, the detection method comprising the following steps: - placing the electrode (1) on a primary conveyor (5) and passing it through an inductive stimulator (2) and a field of view of a thermal imager (3); - heating a surface of the electrode (1) using the inductive stimulator (2); - obtaining thermographic data of the surface of the electrode (1) using the thermal imager (3); - inserting the thermographic data into a computer program (4) in order to extract defect characteristics; - sorting the electrodes according to the extracted defect characteristics. The invention also relates to a defect detection system for implementing the detection method.
Absstract of: WO2024261058A2
The present invention relates to a method for pretreatment of substrates containing copper and/or alloys thereof, the method comprising at least step 1), namely contacting at least one surface of the at least one substrate, said surface being made of copper and/or at least one alloy thereof, at least in portion with an aqueous composition and thereby forming a film at least in portion on said surface, wherein the aqueous composition comprises, besides water, at least one of constituents a1) and a2), namely at least one of zirconium, titanium and hafnium cations as constituent(s) a1) in an amount in a range of from 5 to 2000 mg/L, and/or at least one organosilane and/or a hydrolysis and/or condensation product thereof as constituent(s) a2), wherein contacting step 1) is performed in an electrolytic cell arrangement with the substrate made of copper and/or alloys thereof being the cathode during performance of step 1), a method of applying at least one coating film onto the surface of the pretreated substrate, a substrate obtainable by one of these methods, current collectors, conductors, copper clad laminates, anode materials and battery cells obtainable therefrom, and to a use of aforementioned aqueous composition for electrolytically forming films on substrates made of copper and/or alloys thereof.
Absstract of: EP4734185A1
0001 A cathode material 10 of the present disclosure includes a cathode active material 100, a coating layer 104 containing a first solid electrolyte 101, and coating at least part of a surface of the cathode active material 100, and a second solid electrolyte 102. The first solid electrolyte 101 contains Li, Al, and X, and does not contain Ti. X is at least one selected from the group consisting of F, Cl, Br, and I. The ratio of the volume of the first solid electrolyte 101 to the total volume of the first solid electrolyte 101 and the second solid electrolyte 102 is greater than or equal to 1.0% and less than or equal to 25.0%.
Absstract of: EP4734184A1
0001 A cathode material 10 of the present disclosure includes a cathode active material 100, a coating layer 104 containing a first solid electrolyte 101, and coating at least part of a surface of the cathode active material 100, and a second solid electrolyte 102. The first solid electrolyte 101 contains Li, Al, and X, and does not contain Ti. X is at least one selected from the group consisting of F, Cl, Br, and I. The ratio of the volume of the first solid electrolyte 101 to the total volume of the first solid electrolyte 101 and the cathode active material 100 is greater than or equal to 1.0% and less than or equal to 16.0%.
Absstract of: EP4734171A1
A coated active material of the present disclosure includes a positive electrode active material, and a coating material including a first solid electrolyte and coating at least a portion of a surface of the positive electrode active material. The first solid electrolyte includes Li, M, and X. The M is at least one element selected from the group consisting of a metal element other than Li and a metalloid element, and the X is a halogen element. A value obtained by dividing the integrated value of the amount of moisture released from the coated active material at the time of the heating of the coated active material from 25°C to 120°C by the total mass of the coated active material is defined as MC120. In this case, the moisture content MC120 satisfies 0 ppm < MC120 ≤ 600 ppm.
Absstract of: EP4734204A1
0001 A lithium secondary battery includes a positive electrode, a negative electrode facing the positive electrode, a separator provided between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The separator has a first main surface. The lithium secondary battery further includes a spacer layer provided on the first main surface of the separator. The spacer layer contains a resin and a filler. The spacer layer includes a first layer provided closest to the first main surface in a height direction intersecting the first main surface, and a second layer in contact with the first layer in the height direction. The ratio R<1>/R<2> is greater than 1, where R<1> represents the area ratio of the filler contained in the first layer, and R<2> represents the area ratio of the filler contained in the second layer, both calculated based on a cross-section of the separator taken along the height direction.
Absstract of: WO2024261693A1
The present disclosure relates generally to the field of cushioning articles, more specifically to the field of articles having pressure management and thermal insulation properties. In some embodiments, the article is a compressible thermally insulative foam for between battery cushioning comprising a silicone foam with thermally insulative filler. The present disclosure also relates to a method of manufacturing such articles and to their use for industrial applications for pressure and thermal management applications.
Absstract of: EP4733254A1
The present invention relates to a method for manufacturing a graphite material, and includes a step of pre-carbonizing a resulting product obtained from a graphite raw material and a coating material at a temperature in the range of from 1,050°C to 1,300°C, and a step of graphitizing the pre-carbonized resulting product.
Absstract of: EP4734259A1
A battery, including a housing, a battery cell located in the housing, a sealing cap, and a sealant, where the housing has an electrolyte injection port, and the sealing cap covers the electrolyte injection port and is connected to the housing; the sealing cap has a through hole for bring the inside and the outside of the housing into communication; and the sealant fills and seals the through hole. While ensuring good sealing performance of the electrolyte injection port, the sealant can be melted at a high temperature when pressure inside the battery is required to be relieved, such that the pressure can be released through the through hole; whereas at a normal temperature, the sealing cap cooperates with the sealant to provide good strength and stability, so as to prevent cracking when the battery is dropped or subjected to impact.
Absstract of: EP4734182A1
0001 An electrode material 1000 includes a particle group of a coated active material 130. The coated active material 130 includes an active material 110 and a coating layer 111 coating at least a part of a surface of the active material 110 and including a first solid electrolyte. The electrode material 1000 satisfies at least one of the following (i) to (iii). (i) A thickness Tc of the coating layer calculated by averaging median values in thickness distributions of a plurality of particles of the coating layer is 1.0 nm or more and 100.0 nm or less. (ii) A thickness Ta of the coating layer calculated by averaging average values in thickness distributions of a plurality of particles of the coating layer is 9.0 nm or more and 100.0 nm or less. (iii) A thickness Tq of the coating layer calculated by averaging first quartiles in thickness distributions of a plurality of particles of the coating layer is 2.5 nm or more and 50.0 nm or less.
Absstract of: WO2024263602A1
The present disclosure concerns lithium phosphate species for coated cathode active materials, which are useful in cathodes (i.e., positive electrodes) of rechargeable lithium-batteries for reversibly storing lithium ions (Li+).
Absstract of: EP4733882A1
0001 An electronic device according to one embodiment disclosed herein may comprise: a housing; a support member including a first surface, a second surface facing the opposite direction as the first surface, and a third surface perpendicular to both the first surface and the second surface, and accommodated in the housing, and a battery disposed on the first surface of the support member and including a battery cell and a tape surrounding at least a portion of the battery cell. The tape may surround at least a portion of the support member in a state in which the battery is disposed on the first surface of the support member, and at least a portion of the tape may be disposed on a fourth surface parallel to the first surface of the support member. Various other embodiments may also be possible.
Absstract of: WO2024261047A1
The invention concerns a rolled battery electrode foil of an aluminium alloy comprising 0.06 – 0.16 wt% Si, 0.41-1.0 wt% Fe, ≤0.25 wt% Cu, ≤0.10 wt% Mn, ≤ 0.03 wt% Mg, ≤0.05 wt% Zn, 0.001-0.030 wt% Ti, ≤0.05 wt% each and ≤0.15 wt% in total of impurities, balance Al, having a thickness from 10 to 25 µm, and when measured after heat treatment of the aluminium foil at 120°C for 2 minutes having a tensile strength of at least 190 MPa and an elongation of at least 3%. The invention further concerns a process for the production of a battery electrode foil, an electrode for a secondary battery, and a secondary battery.
Absstract of: EP4734209A1
Provided in the present application are a lithium secondary battery and an electric device. The lithium secondary battery comprises an electrolyte and a negative electrode sheet, wherein the electrolyte comprises a chain carboxylic ester and a cyclic carbonate, and the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector. Based on the total mass of the electrolyte, the mass content W1 of the chain carboxylic ester and the mass content W2 of the cyclic carbonate satisfy: 0.1 ≤ W2/W1 ≤ 2, and the mass content W1 of the chain carboxylic ester and the thickness H of the negative electrode film layer satisfy: 0.2 ≤ H/100W1 ≤ 20, with the unit of H being µm.The lithium secondary battery has good fast charging performance and cycling performance.
Absstract of: EP4734321A1
The present application provides a battery pack active balancing device, method, and battery pack series connection system. The battery pack active balancing device includes a plurality of cell balancing units, each including a first power deriving port, through which power is supplied from a total voltage port of series-connected battery packs to charge battery cells therein; a plurality of first communication units each configured to transmit a power deriving instruction sent from the master control unit to a corresponding one of the cell balancing units through the balancing circuit connection port; a master control unit, communicatively connected to the first communication units, and including a power supply module configured to supply power from the total voltage port of the series-connected battery packs to the cell balancing units through the first power deriving ports. According to the present application, energy conversion is used for the active balancing of the battery packs.
Nº publicación: EP4733424A1 29/04/2026
Applicant:
POSCO HOLDINGS INC [KR]
POSCO CO LTD [KR]
POSCO Holdings Inc.
POSCO Co., Ltd
Absstract of: EP4733424A1
This embodiment relates to a valuable metal recovery composition comprising at least one unit valuable metal recovery composition, wherein the unit valuable metal recovery composition comprises a core portion containing a valuable metal and a shell portion disposed on at least a portion of the core portion, wherein the shell portion comprises an oxide containing lithium, and wherein a ratio of the unit valuable metal recovery composition having an average particle diameter (D) exceeding 4,000 µm is 70% or less of the total valuable metal recovery composition.
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