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SECONDARY BATTERY STATE DIAGNOSIS SYSTEM AND STATE DIAGNOSIS METHOD

Resumen de: EP4682559A1

Provided are a secondary battery state diagnosis system and a secondary battery state diagnosis method that are capable of estimating a full charge capacity more accurately even when there is a period in which data is not acquired with respect to a secondary battery of an electric vehicle. A calculation unit of the secondary battery state diagnosis system a) calculates a first SOC based on a first voltage at a first time point when voltage application related to charging starts, b) calculates, when the voltage application related to the charging ends at a second time point, a relaxation time based on a second voltage at the second time point and the temperature, c) calculates a second SOC based on a third voltage at a third time point after the second time point, and d) estimates, when a time from the second time point to the third time point is equal to or longer than the relaxation time, the full charge capacity of the battery cell or the battery pack based on a current related to the charging, the first SOC, and the second SOC.

NEGATIVE ELECTRODE ADDITIVE, NEGATIVE ELECTRODE, AND SECONDARY BATTERY

Resumen de: EP4682991A1

This negative electrode additive contains a lignin component containing at least a lignin derivative, in which a mass ratio of an extracted component amount to a methoxy group amount per solid content of the lignin component is 0.005 to 0.25, an extracted component amount per solid content of the lignin component is 0.05 to 2.5 mass%, and a methoxy group amount per solid content of the lignin component is 3 to 18 mass%.

INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, PROGRAM, AND INFORMATION PROCESSING SYSTEM

Resumen de: EP4682560A1

An information processing apparatus includes a processing unit. The processing unit calculates frequencies at each of which corresponding one of a plurality of first batteries has a specific attribute based on a plurality of pieces of operation data obtained during operation of a second battery that is a battery including the plurality of first batteries each functioning as a battery, the plurality of pieces of operation data including the specific attribute and identification information for identifying the first battery having the specific attribute, the specific attribute satisfying a predetermined condition in an attribute of the plurality of first batteries. The processing unit identifies the first battery in a specific state among the plurality of first batteries, based on the frequencies.

CASING, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4683060A1

Embodiments of the present application provide a case, a battery cell, a battery, and a power consuming apparatus. The case has an opening, and the case is of an integrally formed structure. The case includes a first wall and at least two second walls opposite to the opening. The first wall and the second walls intersect with each other. Two of the at least two second walls are connected by using a first rounded corner. The first rounded corner has an inner diameter of R1. The case has a yield strength of Re at a temperature of 25°C, where Re and R1 satisfy: 140 MPa≤Re≤1000 Mpa and 2.5 mm≤R1≤20 mm. According to the case, the battery cell, the battery, and the power consuming apparatus in the embodiments of the present application, the problem of wrinkling and cracking of the case caused by material accumulation at the rounded corner can be reduced in a process of integrally forming the case.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4683055A1

Embodiments of the present application disclose a battery cell, a battery, and a power consuming device. The battery cell includes an electrode assembly, a first electrode terminal, and a case. The electrode assembly includes a first tab. The case includes a barrel and a cover connected to the barrel. The barrel is disposed around an outer periphery of the electrode assembly. The cover includes the first electrode terminal. The first tab is electrically connected to the first electrode terminal by using the barrel. The case is of a multi-layer structure. The multi-layer structure has different resistivity. According to the battery cell, the battery, and the power consuming device in the embodiments of the present application, the reliability of the battery cell can be improved.

HOUSING, BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4683056A1

Embodiments of the present application provides a housing, a battery cell, a battery, and an electrical apparatus. The housing is provided with an opening, and comprises a first wall arranged opposite to the opening and at least two second walls, wherein the first wall and the second walls are arranged to intersect each other. A transition area is arranged between every two adjacent second walls among the at least two second walls, and the maximum thickness T1 of the transition area and the maximum thickness TO of the second wall with the maximum thickness among the second walls meet: T1>T0. The housing, the battery cell, the battery and the electrical apparatus in the embodiments of the present application are conducive to solving the problem of housing deformation of battery cells in production and assembly process, and the problem of deformation of housings caused by gas generation and expansion during use.

A VALVE

Resumen de: CN120882588A

The present subject matter relates to a valve (100) comprising a base plate (102). The substrate (102) has a plurality of openings (104-1, 104-2, 104-3, 104-4) provided on a surface of the substrate (102) such that the plurality of openings (104-1, 104-2, 104-3, 104-4) penetrate the height of the substrate (102) and enable gas from below the substrate (102) to be discharged. The exhaust structure (200) is disposed over each of the plurality of openings (104-1, 104-2, 104-3, 104-4). For example, an exhaust structure (200) will be disposed over each of the openings (104-1, 104-2, 104-3, 104-4). And the exhaust structure enables out-of-control gas in the battery pack to be exhausted into the atmosphere.

AN APPARATUS AND A METHOD FOR DISCHARGING SPENT LITHIUM-ION BATTERY

Resumen de: TW202504145A

The present invention relates to an apparatus (100) and method for discharging spent lithium-ion battery (101). The apparatus (100) of the present invention consists of voltmeter (105) and ammeter (106) to monitor the voltage and current in ampere during discharging, a plurality of timers to control the rate of discharge, a temperature sensor (111) with a cut-off switch to control heat generation during discharging process and to avoid a fire hazard, a temperature panel (107) to display temperature during discharge and an electrolytic unit (102) containing cathode, anode (104) and an electrolyte to utilize the energy during discharge. The present invention provides a simple, cost effective, environment-friendly, easy to operate apparatus and method for discharging spent lithium-ion battery that provides electrolytic grade copper as a recovered product and by which the energy of the spent lithium-ion battery is fully utilized.

HOT-MELT ADHESIVE FILM, SEALING FILM, METAL TERMINAL, BATTERY, AND DEVICE

Resumen de: EP4682214A1

The present invention relates to a hot-melt adhesive film that is able to join a plurality of adherends while maintaining a certain space therebetween or is able to join a plurality of adherends in an electrically insulated state, as well as a sealing film, a metal terminal, a battery, and a device in which the layer thickness of the sealing film is hardly reduced at the corner portion of an electrode lead wire even when heat-sealing is performed at a high temperature. More specifically, the present invention relates to a hot-melt adhesive film including: a first adhesive layer that adheres to a first adherend; a second adhesive layer that adheres to a second adherend; and a base material layer provided between the first adhesive layer and the second adhesive layer, in which at least the base material layer has a storage elastic modulus at 170°C of 1 × 10⁵ Pa or more as measured with a tensile rheometer by a method in accordance with ISO 6721-4:1994, as well as a sealing film that seals between an electrode lead wire electrically connected to a battery body and a housing container that houses the battery body and that includes a first adhesive layer that adheres to the electrode lead wire, a second adhesive layer that adheres to the housing container, and a base material layer provided between the first adhesive layer and the second adhesive layer, in which at least the base material layer has a storage elastic modulus at 170°C of 1 × 10<sup>5

CASING, BATTERY CELL, BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4683438A1

Embodiments of the present application disclose a case, a battery cell, a battery, and a power consuming device. The case is applicable to the battery cell. The case is of a multi-layer structure. A material of an outermost case of the case includes at least one of the following: aluminum, an aluminum alloy, copper, a copper alloy, and chromium. According to the case, the battery cell, the battery, and the power consuming device in the embodiments of the present application, the service life of the case can be prolonged.

CASING, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4683059A1

Embodiments of the present application provide a case, a battery cell, a battery, and a power consuming apparatus. The case has an opening, and the case is of an integrally formed structure. The case includes a first wall and at least two second walls opposite to the opening. The first wall and the second walls intersect with each other. Two of the at least two second walls are connected by using a first rounded corner. An inner diameter R1 of the first rounded corner and a depth H of the case satisfy: 2.5 mm≤R1≤20 mm and 50 mm≤H≤250 mm. According to the case, the battery cell, the battery, and the power consuming apparatus in the embodiments of the present application, the problem of wrinkling and cracking of the case caused by material accumulation at the rounded corner can be reduced in a process of integrally forming the case.

BATTERY PACK AND DEVICE INCLUDING SAME

Resumen de: EP4683045A1

A battery pack according to an embodiment of the present disclosure includes: a plurality of battery modules including a plurality of battery cells; heat sinks that are disposed to correspond to each of the battery modules and cool the battery modules; a temperature control system that supplies and recovers a coolant to the heat sinks; a coolant line that connects the heat sinks and the temperature control system; and a BMS (Battery Management System) module that monitors and controls the state of the battery modules, wherein a three-way type control valve is provided in the coolant line connected to each of the heat sinks, and the BMS module adjusts the control valves based on the temperature of the battery module and controls whether or not a coolant is supplied to the heat sink corresponding to the battery module.

METHOD FOR MOUNTING EXPLOSION-PROOF SHEET

Resumen de: EP4683081A1

The present application relates to the technical field of explosion-proof sheets, and particularly, to a method for mounting an explosion-proof sheet. The method comprises the following steps: 1) providing an explosion-proof sheet and a fixing ring that defines an enclosed area; connecting the explosion-proof sheet to the fixing ring to seal the enclosed area; and 2) providing a battery housing having an accommodating cavity therein for disposing a battery cell, wherein the top of the accommodating cavity of the battery housing is provided with a top opening for mounting a top cover sheet; the battery housing is provided with a mounting wall arranged in misalignment with the top opening; the mounting wall is provided with a blast hole in communication with the accommodating cavity; the fixing ring is mounted on the mounting wall, and the explosion-proof sheet seals the blast hole. According to the present application, the explosion-proof sheet is first connected to the fixing ring, and then the fixing ring is mounted in the blast hole of the mounting wall of the battery housing. The mounting wall is in misalignment with the top opening of the battery housing and is not mounted on the top cover sheet, which reduces the welding procedures on the top cover sheet and reduces the impact on the performance of the explosion-proof sheet during the welding of lower plastic pieces.

BATTERY CELL AND BATTERY

Resumen de: EP4683097A1

Disclosed is a battery. The battery includes a battery cell. The battery cell includes: positive electrode sheets, negative electrode sheets and separators. The positive electrode sheets, the negative electrode sheets and the separators are mutually stacked, the battery cell is formed by winding the positive electrode sheets, the separators and the negative electrode sheets, and the positive electrode sheets, the negative electrode sheets and the separators form a plurality of electrode rings in a radial direction. The positive electrode sheets and the negative electrode sheets each include a sheet body, a bare foil region and a plurality of tabs. The bare foil region is arranged on one side of the sheet body in a height direction, and the plurality of tabs are spaced apart on one side of the bare foil region facing away from the sheet body. A tab ring of an outer one of the electrode rings covers a tab ring of an inner one of the electrode rings. A relatively complete plane is obtained after the tabs of each ring are flattened, thereby forming a flat tab plane internally having no hole caused by stacking of the tabs or an uneven thickness of the tabs.

ELECTRODE ASSEMBLY AND SECONDARY BATTERY INCLUDING THE SAME

Resumen de: EP4683021A1

A secondary battery includes: an electrode assembly including a through-hole in a thickness direction thereof, a case having an opening and accommodating the electrode assembly, a cap plate coupled to an end of the case having the opening of the case, and an electrode terminal electrically connected to an electrode tab of the electrode assembly and penetrating through the cap plate. The secondary battery further includes a fixing member in the through-hole to secure the electrode assembly in the thickness direction.

SECONDARY BATTERY AND SECONDARY BATTERY MANUFACTURING METHOD

Resumen de: EP4683019A1

A method for manufacturing a secondary battery according to an embodiment of the present disclosure may include a first sealing step of sealing an edge of a pouch-type outer packaging by forming an edge sealing portion at the edge of the pouch-type outer packaging having an accommodation portion for accommodating an electrode assembly and a collection portion for collecting gases produced during charging and discharging of the electrode assembly, a degassing step of venting the gases collected in the collection portion during the charging and discharging of the electrode assembly to outside of the pouch-type outer packaging, and a second sealing step of forming a division sealing portion between the accommodation portion and the collection portion in the pouch-type outer packaging to divide the accommodation portion from the collection portion after the degassing step, wherein the first sealing step may further include forming an additional sealing portion extended from the edge sealing portion in a direction that runs between the accommodation portion and the collection portion, wherein the additional sealing portion may be disposed in the collection portion, spaced apart from the division sealing portion.

BATTERY MANAGEMENT DEVICE AND BATTERY MANAGEMENT METHOD

Resumen de: EP4682564A1

A battery management device disclosed in the present document comprises: a sensor unit for measuring the voltage and current of a plurality of battery cells; and a control unit for generating accumulated voltage deviation data in which deviations between the voltages of the plurality of battery cells are accumulated, determining the SOC of the plurality of battery cells on the basis of the currents, generating accumulated SOC deviation data in which deviations between the SOC of the plurality of battery cells are accumulated, and determining the cause of failure of the plurality of battery cells on the basis of the accumulated voltage deviation data and the accumulated SOC deviation data.

POROUS METAL STRUCTURE AND PREPARATION METHOD THEREFOR

Resumen de: EP4682294A1

The present application discloses a porous metal structure and a method for preparing the same. The method includes the following steps: providing a cold-rolled alloy foil material; carrying out recrystallization annealing treatment on the alloy foil material, and then carrying out first cooling treatment to obtain an alloy foil material having a first component phase; carrying out phase separation thermal treatment on the alloy foil material, and then carrying out second cooling treatment to separate out a second component phase and obtain an alloy foil material having both the first component phase and the second component phase, where the temperature of the phase separation thermal treatment is smaller than the temperature of the recrystallization annealing treatment, and an average cooling rate of the second cooling treatment is smaller than an average cooling rate of the first cooling treatment; and carrying out dealloying treatment on the alloy foil material, carrying out reduction annealing treatment in a reducing gas atmosphere, and carrying out third cooling treatment to obtain a porous metal structure. According to the present application, grain boundary corrosion cracks formed in dealloying treatment can be partially or even completely repaired, and the prepared porous metal structure can have good strength and toughness.

BATTERY CELL AND BATTERY PACK

Resumen de: EP4683017A1

Provided are a single-cell battery and a battery pack including a plurality of single-cell batteries. The single-cell battery includes a housing, a cell, a current collector plate and an end cover; where the housing is provided with an accommodation cavity and an opening communicating with the accommodation cavity; the housing includes an inner surface enclosing to form the accommodation cavity and an end surface connected to an edge of the inner surface and located at the opening; the cell is arranged in the accommodation cavity; the current collector plate is arranged in the accommodation cavity and includes a current collecting portion and a connecting portion connected with each other; the current collecting portion is electrically connected to the cell, and the connecting portion is connected to the end surface; the end cover seals the opening and is connected to a side of the connecting portion away from the end surface; the housing is welded with the connecting portion and the end cover at the end surface. In the present application, an edge of the housing at the opening, the connecting portion and the end cover are stacked and connected in sequence, and then the three can be welded together through one connection process.

PRESSURE RELIEF STRUCTURE AND CYLINDRICAL BATTERY PACK APPLYING PRESSURE RELIEF STRUCTURE

Resumen de: EP4683078A1

A pressure relief structure includes a bottom plate (1). The bottom plate (1) is provided with exhaust channels (11). Two ends of each of the exhaust channels (11) are exhaust ports (12). A plurality of exhaust channels (11) are provided. The plurality of exhaust channels (11) are arranged side by side. At least one heat insulation cavity (17) is provided between adjacent two of the exhaust channels (11). The heat insulation cavity (17) is hollow. The exhaust channels (11) are provided with a plurality of cell pressure relief vents (13). The cell pressure relief vents (13) are provided corresponding to the cells (22).

COMPOSITE SEPARATOR AND BATTERY

Resumen de: EP4683092A1

This application provides a composite separator and a battery. In a first aspect, this application provides a composite separator, which includes a base film and an adhesive coating. The adhesive coating includes polyethylene wax particles and inorganic particles. The polyethylene wax particles can play a good adhesive role, prevent dimensional changes caused by release of internal stress, and improve the problem of wrinkling of the separator upon electrolyte injection. The inorganic particles play a supporting role. By adjusting the weight ratio and the size ratio of the polyethylene wax particles and the inorganic particles, and the weight of the polyethylene wax particles per unit area, the air permeability increase before and after providing the adhesive coating and the air permeability increase of the composite separator before and after hot pressing can be reduced on the basis of ensuring the adhesion force of the composite separator, and the electrical performance of the battery can be improved.

END COVER ASSEMBLY, END COVER, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4683062A1

The present application discloses an end cover assembly, an end cover, a battery cell, a battery, and an electric device. The end cover assembly comprises an end cover, electrode terminals and insulating members. Mounting holes are formed in the end cover. The electrode terminals are mounted in the mounting holes. The insulating members are at least partially arranged between the electrode terminals and the end cover, so as to insulate and isolate the electrode terminals from the end cover. The end cover and/or the electrode terminals are provided with first limiting parts; the insulating members are provided with second limiting parts; and the first limiting parts are snap-fitted to the second limiting parts to limit rotation of the insulating members relative to the end cover and/or the electrode terminals. In this way, the risk of rotation of the insulating members relative to the end cover can be reduced, the sealing performance between the insulating members and the end cover is improved, the sealing performance between the insulating members and the electrode terminals is improved, the risk of leakage of an electrolyte is reduced, and the reliability of the battery cell is improved.

SECONDARY BATTERY INCLUDING ELECTRODE ASSEMBLY LATERALLY INSERTED IN CASE AND METHOD OF MANUFACTURING SAME

Resumen de: EP4683051A1

A secondary battery includes: a case having an open lateral surface; an electrode assembly inserted into the case through the open lateral side, the electrode assembly comprising a bent electrode tab; a terminal electrically connected to the bent electrode tab of the electrode assembly, the terminal being exposed to the outside of the case; a cover sealing the open lateral side of the case; and an electrode plate insulating member electrically insulating the electrode assembly from the terminal.

CONNECTOR, ENERGY STORAGE MODULE AND ENERGY STORAGE DEVICE

Resumen de: EP4683127A1

A connector, an energy storage module, and an energy storage apparatus are disclosed, and relate to the field of energy technologies, to resolve a problem that a connector terminal is prone to pin dislodgement. The connector includes a housing, a first connection terminal, and a locking structure. A first mounting hole extending in a first direction and a mounting groove extending in a second direction are provided on the housing, and the second direction is perpendicular to the first direction. The first connection terminal is inserted into the first mounting hole, and a limiting groove is provided on the first connection terminal. The locking structure is slidably connected to the mounting groove, a limiting protrusion is disposed on the locking structure, and when the locking structure slides to a first position, the limiting protrusion is in the limiting groove, to limit the first connection terminal from moving in the first direction. When the foregoing structure is used, pluggable mounting between energy storage modules can be implemented. In a stacking process of the energy storage modules, even if the connectors are subjected to heavy impact, pin dislodgement does not occur, and connection reliability can be ensured regardless of oblique insertion or vertical drop.

APPARATUS AND METHOD FOR ESTIMATING SOH

Nº publicación: EP4682563A1 21/01/2026

Solicitante:

LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd

Resumen de: EP4682563A1

An apparatus for estimating a SOH according to one aspect of the present disclosure may include a profile obtaining unit configured to obtain an OCV profile for a plurality of OCVs of a battery measured at different time points; a profile correcting unit configured to generate an adjusted positive electrode profile and an adjusted negative electrode profile by adjusting a preset criterion positive electrode profile and a preset criterion negative electrode profile to correspond to the OCV profile; and a control unit configured to extract a diagnosis factor about a negative electrode change rate for the battery from the criterion negative electrode profile and the adjusted negative electrode profile, and estimate a negative electrode SOH of the battery based on the extracted diagnosis factor.