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POLE PIECE, BATTERY CELL, ELECTRODE ASSEMBLY, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4601110A1

This application discloses an electrode plate, a battery cell, an electrode assembly, a battery, and an electrical device, and relates to the field of battery technology. The electrode plate includes a current collector. The current collector includes a main body and a plurality of tabs. The main body includes a first edge in a width direction of the main body. The tabs protrude from the first edge. The plurality of tabs are spaced apart along a length direction of the main body. The plurality of tabs include at least one first tab. The first tab includes a first sub-tab and a second sub-tab. A gap exists between the first sub-tab and the second sub-tab. This application weakens the bending strength of the first tab, reduces the difficulty of bending the first tab under pressure, and reduces the risk of excessive deformation of the main body caused by an excessive external force required for bending the first tab under pressure, thereby improving reliability of the battery cell.

BATTERY PACK MANAGEMENT DEVICE AND OPERATION METHOD THEREOF

Resumen de: EP4600677A1

A battery pack management apparatus according to an embodiment disclosed herein includes a communication unit configured to receive voltages of any one battery cell group of a plurality of battery cell groups from each of a plurality of sensors configured to measure voltages of the any one battery cell group and a controller configured to calculate a median of voltages of each of the plurality of battery cell groups, calculate a voltage deviation of a plurality of battery cells of the plurality of battery cell groups with respect to a median of the voltages of each of the plurality of battery cell groups and diagnose whether any one battery cell of the plurality of battery cells is abnormal by comparing the voltage deviation of each of the plurality of battery cells with a threshold value.

POSITIVE ELECTRODE FOR ELECTROLYSIS AND METHOD FOR PRODUCING SAME

Resumen de: EP4600408A1

An anode for electrolysis in which electrolysis performance is less likely to deteriorate even when electric power having a large output fluctuation, such as renewable energy, is used as a power source and in which excellent catalytic activity is stably maintained for a long period of time is provided. The anode for electrolysis 10 includes a conductive substrate 2 in which at least a surface of the conductive substrate 2 is formed of nickel or a nickel-based alloy; and a first layer 4 formed on the surface of the conductive substrate 2, the first layer 4 being capable of functioning as a catalyst layer containing a lithium-containing nickel cobalt oxide represented by a composition formula LixNiyCo2O4 (0.05 ≤ × ≤ 1.0, 1.0 ≤ y ≤ 2.0, 1.0 ≤ z ≤ 2.0, and x + y + z = 2 to 3).

CHARGING CONTROL METHOD AND APPARATUS, AND ELECTRONIC DEVICE

Resumen de: EP4601146A1

This application discloses a charging control method and apparatus, and an electronic device, and pertains to the field of communication technologies. The method includes: in a case that a charger is connected, detecting values of a first flag and a second flag of a charging chip register, where the first flag is used to indicate a charging status, and the second flag is used to indicate a magnitude relationship between a battery voltage and a system voltage; and changing a current charging stage based on a change in a value of at least one of the first flag and the second flag.

Material recovery method

Resumen de: GB2637908A

A method of recovering metals from a source material (e.g. lithium battery waste) by adding acid to the source material, and then adding a reducing agent (e.g. a peroxide) to the leach solution while maintaining its temperature at 85 0C or less. While the acid and reducing agent are added, one of foaming, the rate of change of leach metal concentration in the solution, the rate of change of pH or the initial concentration of a leach metal is monitored. The addition of acid and reducing agent are respectively stopped when i) all target metals have been solubilised and the pH is between 0-2.3 and ii) the pH is between 1-2.3. A base is then added to increase the pH to 5 to 5.3 along with an oxidising agent (air or oxygen) to remove metals such as iron and aluminium. Metals can be recovered from the depleted leach solution. Apparatus for performing the method comprise a leach tank with an agitator and a foam breaker on a common shaft and a recirculation loop for spraying liquid from the tank onto foam in the tank. Also hydrometallurgically recovered graphite with crystallites having a minimum ferret diameter of 5 microns.

PROCESS FOR WETTING A DRY ASSEMBLY FOR PRODUCING AN ELECTROCHEMICAL CELL

Resumen de: EP4601068A1

The invention concerns a process (10) for wetting at least one dry assembly (15) for producing an electrochemical cell, the process comprising a) providing at least one dry assembly (15) comprising at least one cathode (20), at least one anode (25) and an at least partially metallic cell housing (35), the at least one cathode (20) and the at least one anode (25) being inserted in the at least one cell housing (35); b) dosing an electrolyte solution within the respective cell housing (35) and sealing the respective cell housing (35); c) positioning each of the sealed cell housing (35) between a pair of electromagnetic coils (40); and d) supplying each coil (40) with a respective electrical current.

POSITIVE ELECTRODE CURRENT COLLECTOR FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: EP4601048A1

A cathode current collector for a lithium secondary battery according to embodiments of the present disclosure includes a stacked structure including an aluminum layer, an aluminum-copper alloy layer formed on the aluminum layer, and a copper layer formed on the aluminum-copper alloy layer, wherein a surface of the stacked structure may be doped with at least one metal element. Accordingly, the electrical conductivity of the cathode current collector may be improved and the cell resistance may be reduced.

NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE, AND BATTERY

Resumen de: EP4601045A1

A negative electrode material contains a negative electrode active material and a solid electrolyte material, wherein the solid electrolyte material contains an alkali metal element, a metal element except alkali metal elements or a metalloid element, and a halogen, and the metal element except alkali metals or the metalloid element includes at least one of Zr and In.

ION CONDUCTIVE SUBSTANCE, ELECTROLYTE, AND BATTERY

Resumen de: EP4600971A1

An ion conductive substance contains an alkali metal element, a metal element M, a halogen element, a dopant element X, and an oxygen element, in which the metal element M is at least one of Ta and Nb, and the dopant element X is at least one element selected from the group consisting of Ga, In, Sb, Bi, Mg, Ca, Sr, and Ba.

POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE, AND BATTERY

Resumen de: EP4601044A1

Provided is a positive electrode material containing a positive electrode active material and a polymer having an ability to preferentially conduct metal ions, in which the positive electrode active material is a material that occludes and releases lithium ions at 4.0 V or more with respect to Li/Li⁺.

ELECTRODE MATERIAL, POSITIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE, NEGATIVE ELECTRODE AND BATTERY

Resumen de: EP4601043A1

Provided is an electrode material containing an electrode active material and a polymer having an ability to preferentially conduct metal ions, in which a volume ratio of the polymer to a total volume of the electrode active material and the polymer is 0.01 to 0.65.

INTERCONNECTION ASSEMBLY, METHOD OF ASSEMBLING AN INTERCONNECTION ASSEMBLY, AND SYSTEM

Resumen de: EP4601075A1

An interconnection assembly for a battery system comprising a plurality of battery cells, the layer interconnection assembly comprising: a bottom layer being arranged to connect the plurality of battery cells and to conduct current in a first direction, and a top layer stacked on top of the bottom layer and arranged to conduct current in a second direction opposite to the first direction, wherein the top layer comprises a positive interconnection and a negative interconnection, the positive interconnection comprises a positive terminal connection and the negative interconnection comprises a negative terminal connection.

CYLINDRICAL LITHIUM METAL SECONDARY BATTERY

Resumen de: EP4601059A1

A cylindrical lithium metal secondary battery, comprising: a casing, a battery cell electrode set arranged in the casing, and an electrolyte filling the housing. The battery cell electrode set comprises a wound electrode set and tabs arranged on the wound electrode set; the wound electrode set is formed by winding a positive electrode, a negative electrode, and a separator; the negative electrode is a metal lithium sheet; the metal lithium sheet serves as a negative electrode current collector and a negative electrode active material. According to the cylindrical lithium metal secondary battery, a metal lithium sheet is used as a negative electrode and the metal lithium sheet has the functions of both an active material and a current collector, so that a common copper current collector is no longer needed, the thickness of the separator of the wound electrode set is greatly reduced, and the energy density of the battery is greatly improved. Additionally, by using a cylindrical battery structure, stable charge and discharge cycles are achieved without applying an external pressure.

MODIFIED GREEN COKE MATERIAL, PREPARATION METHOD THEREFOR, AND USE THEREOF

Resumen de: EP4600328A1

The disclosure provides a modified green coke material, a method for preparing the modified green coke material, and an application of the modified green coke material. A sum of percentages of a long fibrous structure and a broad-domain structure in a polarized microstructure of the modified green coke material is in a range of 55 ~ 99%, and a percentage of volatile components in the modified green coke material is in a range of 1% ≤ volatile components matter < 5%. In regard to the modified green coke material provided in the disclosure, the long fibrous structure and the broad-domain structure are increased, the volatile components are effectively reduced, and light components are further excluded, thereby eliminating a self-bonding property of raw materials. In this case, further agglomeration will not occur during a subsequent heat treatment for preparing a graphite negative electrode material. Using the modified green coke material to prepare the graphite negative electrode material can effectively improve a graphitization degree, a gram capacity, and a compaction density of the graphite negative electrode material, thus comprehensively improving the performance of the graphite negative electrode material.

ISOLATION PLATE, ISOLATION PLATE ASSEMBLY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC DEVICE

Resumen de: EP4601103A1

The present application discloses a partition plate, a partition plate assembly, a battery module, a battery pack, and an electrical device, and belongs to the technical field of batteries. An partition plate of the present application is applied to a battery module, the partition plate including: a plurality of exhaust holes, a portion of the exhaust holes in the plurality of the exhaust holes having an exhaust direction provided along a first direction, and another portion of the exhaust holes in the plurality of the exhaust holes having an exhaust direction provided along a second direction, where the first direction and the second direction are provided at an included angle to the vertical direction, respectively, and the first direction and the second direction are provided at an included angle. The exhaust holes of the present application are provided at least toward the first direction and the second direction, and along a thickness direction of the partition plate body, which can avoid the risk of the top of the battery module or the battery pack bursting due to the difficult exhaust from the top, and thus can prevent the problem of the failure of the battery module or the battery pack from occurring.

METHOD FOR PRODUCING AN ACCUMULATOR AND DEVICE FOR PRODUCING AN ACCUMULATOR

Resumen de: WO2024133445A1

The invention relates to a method for producing an accumulator, having at least one cell stack (4), which is formed by stacked single sheets (6), wherein the cell stack (4) is wrapped with a film (8) using a device (2).

RAPID SYNTHESIS OF A SULFIDE-BASED SOLID ELECTROLYTE

Resumen de: US2024166514A1

Provided herein are methods for synthesizing sulfide-based solid electrolytes, including those with an Argyrodite phase. The methods generally comprise mixing electrolyte precursors in a blend of solvents comprising a catalytic solvent and a spectator solvent.

BATTERY PACK

Resumen de: EP4601097A1

A battery pack according to an embodiment of the present invention includes: a housing; at least one battery module accommodated in the housing; a venting part provided in the housing to discharge a gas generated in the battery module; a filter disposed in front of the venting part in a flow direction of the gas; a scraper configured to remove foreign substances accumulated on the filter; and a driving part operating by the flow of the gas to reciprocate the scraper.

BATTERY MODULE HAVING FIREWALL

Resumen de: EP4601100A1

The present disclosure relates to a battery module. The battery module according to an embodiment of the present disclosure may include a plurality of cell assemblies, each including a plurality of battery cells connected in parallel with each other, and a firewall disposed between two adjacent cell assemblies among the plurality of cell assemblies.

SLITTING METHOD AND HARDWARE FOR COATED FLEXIBLE SUBSTRATES

Resumen de: WO2024091582A1

A method and system for slitting a lithium-coated polyethylene terephthalate (PET) roll is provided. The roll undergoes laser ablation to remove a portion of a layer of lithium where a slit is desired exposing the PET substrate underneath. The roll then undergoes a blade cutting process wherein the roll is cut along exposed PET substrate, producing a plurality of slit rolls. The laser ablation of the roll prior to blade cutting allows lithium to be removed, preventing lithium build-up on the blade. This reduces maintenance time, improves the quality of the slit roll edges, and allows for longer lengths of rolls to be cut. The laser ablation also allows for rolls with thick layers of lithium to be blade cut.

WOUND BATTERY CELL, BATTERY, BATTERY ASSEMBLY, AND ELECTRICAL APPARATUS

Resumen de: EP4601062A1

A jelly roll battery cell, a battery, a battery assembly and an electric device. The jelly roll battery cell (100) includes a main body portion (10) and a tab portion (20); one side of each positive winding portion (101a) in one part of positive winding portions (101a) is connected to one positive tab (21), and one side of each positive winding portion (101a) in the other part of the positive winding portions (101a) is connected to two positive tabs (21); and/or, one side of each negative winding portion (101b) in one part of negative winding portions (101b) is connected to one negative tab (22), and one side of each negative winding portion (101b) in the other part of the negative winding portions (101b) is connected to two negative tabs (22). This structure not only increases a number of the positive/negative tabs and a flow area of the jelly roll battery cell, but also avoids interlayer pseudo soldering between excessive positive/negative tabs and electrically conductive connecting welds by means of a restriction on the number of positive/negative tabs.

BATTERY

Resumen de: WO2024074533A1

A gelled lead acid battery comprising at least one positive electrode, at least one negative electrode, and an electrolyte including a gelling agent, wherein the at least one positive electrode includes a plurality of tube members each comprising a tube containing positive active material (PAM) and a conducting spine in contact with the positive active material, and wherein the at least one negative electrode comprises a conducting grid and a negative active material (NAM) in contact with the conducting grid, which negative active material comprises carbon nanomaterial.

BATTERY MODULE TOP COVER STRUCTURE

Resumen de: EP4601099A1

The present invention provides a structure of a battery module including: a battery cell laminate; a housing having an open upper end and accommodating the battery cell laminate; and a top cover covering the upper end of the housing, wherein the top cover includes: a first layer 11 having a rigid body; a second layer 12 having a flexible body and laminated on the first layer 11; a ventilation hole 111 perforating the first layer 11 in vertical direction; and a non-circular slit 121 perforating the second layer 12 in the vertical direction, and the first layer 11 and the second layer 12 are fixed to each other along at least a section of edges thereof.

POSITIVE MATERIAL, PREPARATION METHOD THEREOF, AND SECONDARY BATTERY

Resumen de: EP4601025A1

The present disclosure provides positive material, preparation method, and secondary battery. The positive material includes lithium iron phosphate active material and coating layer. The lithium iron phosphate active material includes secondary particles, first primary particles are distributed between at least part of the secondary particles, and the coating layer includes first coating layers covering surfaces of secondary particles. The first coating layers cover surfaces of secondary particles in surface-coated state, and first coating layers each have a reticular structure. The surfaces of secondary particles each have surface-coated coating layer having reticular structure, which improves a capacity, rate performance, and cycle performance of the positive material. Through matching between the first primary particles and the secondary particles, compaction density of the positive material is increased, agglomeration of particles of the positive material is reduced, and the capacity and the rate performance of the positive material are improved.

STACKING APPARATUS FOR ALTERNATELY STACKING A CONTINUOUS RIBBON-LIKE SEPARATOR AND FOIL SHEETS AND METHOD FOR STACKING A CONTINUOUS RIBBON-LIKE SEPARATOR AND FOIL SHEETS

Nº publicación: EP4599493A1 13/08/2025

Solicitante:

GD SPA [IT]
G.D S.p.A

Resumen de: CN119998973A

A stacking apparatus (1), comprising: a stacking station (26) configured to receive a foil (100, 101); the first conveying device (10) is used for conveying the first foil sheet (100); and a second transport device (11) for transporting a second foil (101), the first transport device and the second transport device being alternately movable between a pick-up position and a release position; a feeding device (27) of the belt-shaped diaphragm (102), the feeding device facing the stacking station (26); a displacement device (29) fed by the feeding device (27) and comprising a follow-up device (30) which can be moved between the first end position (P1) and the second end position (P2) and above the stacking station (26) when the second conveyor device (11) is moved from the release position to the pick-up position, and which can be moved between the first end position (P1) and the second end position (P2) and above the stacking station (26) when the first conveyor device (10) is moved from the release position to the pick-up position. The follow-up device can be moved from the second end position (P2) to the first end position (P1) and over the stacking station (26). A displacement device (29) moves the follower device (30) along a curvilinear path (PC) between the first end position (P1) and the second end position (P2) and between the second end position (P2) and the first end position (P1).