Alerta

ELECTROLYTE SOLUTION FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY CONTAINING SAME

Resumen de: EP4712192A1

The present invention provides a nonaqueous electrolyte solution which, when used in a nonaqueous electrolyte secondary battery containing Si and/or silicon oxide as a negative electrode active material, can exhibit at least one of improvement of a capacity retention rate after cycles and reduction of the amount of generated gas during high temperature storage in the nonaqueous electrolyte secondary battery. A nonaqueous electrolyte solution contains (I) a nonaqueous organic solvent; (II) a solute that is an ionic salt; and (III) a compound represented by formula (1) or a compound represented by formula (3). (3): PO(OR4)y(OR5)3-y. In formula (1), for example, each R1 is independently a hydrogen atom, a halogen atom, a linear alkyl group having 1-12 carbon atoms or a branched alkyl group having 3-12 carbon atoms. In formula (3), each R4 independently represents an alkenyl group or an alkynyl group; R5 represents an alkyl group or an aryl group; and y is an integer of 2-3.

BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4712200A1

A battery and an electronic device are provided. The battery includes a cell and a protection board assembly, where a head of the cell has a top seal, and an electrode tab of the cell extend from the top seal. The protection board assembly includes an FPC and a first protection component, where the first protection component is a protection component whose size in a thickness direction of the battery is greater than a preset threshold. The FPC includes a first part and a second part, where the first part of the FPC is configured to be disposed on the top seal of the cell in a stacked manner, and the second part of the FPC extends from the first part to a direction away from the top seal. An electrical signal loop between the cell and a mainboard is formed through connection via the FPC. The first protection component is disposed on the second part of the FPC. In this way, the first protection component whose height size is greater than the preset threshold is removed from a position of the top seal, and is disposed away from a stacking area above the top seal, so that space occupied by the protection component at the position of the top seal can be reduced, volumetric energy density of the battery can be effectively improved, and trending design requirements for lightness and thinness of a product are met.

IRON PHOSPHATE-COMPRISING MATERIALS

Resumen de: WO2025051918A1

The present application discloses a method for preparing an iron- phosphate comprising material comprising reacting the iron source lepidocrocite (y-FeOOH) with a phosphorus source, resulting in the formation of an iron phosphate-comprising material.

HIGH-ENTROPY DOPED POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4712167A1

The present application relates to a high entropy doped positive electrode material and production method and use thereof. The high entropy doped positive electrode material of the present application comprises a material represented by a chemical formula of LiNixCoyMnzBaMbO2, wherein 0.80≤x<0.98, 00, b>0, a≥b, x+y+z+a+b=1, and M comprises at least four of Al, Zr, Sr, Sn, Sb, Si, Ba, Y, W, Ta, Ti, Mo, Nb, La, Ta and Ce. The high entropy doped positive electrode material of the present application can have both high specific capacity and cycle stability.

PARAMETERIZING A HALF-CELL EQUIVALENT CIRCUIT MODEL OF A LITHIUM-ION BATTERY CELL BASED ON FULL-CELL MEASUREMENTS

Resumen de: EP4711786A1

The present disclosure relates to techniques for determining multiple parameterized values of an equivalent circuit model (ECM) that represents a Lithium-ion battery cell, enabling accurate simulation of various electrochemical processes occurring within the cell. A half-cell ECM is considered. The ECM can parameterized optimized by considering one or more constraints related to the electric potential of the negative electrode, breaking symmetry between parameter values associated with positive and negative electrodes. This results in improved accuracy of the ECM for simulating Lithium plating onset thresholds at different SOC values, enabling determination of optimized charging profiles or load constraints that avoid increased aging of the battery.

METHOD FOR APPLYING A PROTECTIVE LAYER TO A METAL OR METAL ALLOY SURFACE, AND ARTICLE COMPRISING SUCH PROTECTIVE LAYER

Resumen de: EP4711491A1

The present invention relates to a method for applying a protective layer to a surface of a substrate, the surface comprising a metallic element or an alloy thereof, in particular wherein the metallic element is an alkali metal or an alkaline earth metal. The present invention is further related to an article comprising such a substrate and a protective layer arranged on or covering at least part of the substrate. The invention is further related to an electrode comprising the article, in particular an anode, and to a battery (cell) comprising the electrode.

FOLDED MEMBRANE CARRIER FOR BATTERY CASE VENTING

Resumen de: EP4712242A1

A venting unit (34) for a battery case, the venting unit (34) comprising a housing part (36) delimiting a vent opening (38), and a membrane assembly (10; 10') spanning across the vent opening (38) and comprising a membrane carrier (12; 12') comprising carrier segments (14) and flow windows (16) respectively disposed through the carrier segments (14), and membrane segments (18) respectively covering the flow windows (16). Each adjacent pair of the carrier segments (14) is folded against one another along a film hinge (20) disposed therebetween.

ENERGY STORAGE CELL AND MANUFACTURING METHOD THEREFOR

Resumen de: EP4712256A1

The present invention provides a rechargeable energy storage cell (1), in which a degassing port (12) is forming part of the anode (2) when the cell (1) is in use. Further, a corresponding manufacturing method is provided.

BATTERY AND METHOD FOR MANUFACTURING THE BATTERY

Resumen de: EP4712219A1

A battery, comprising: battery components including an electrode assembly; an inflatable pouch case enclosing the battery components inside, the inflatable pouch case having an inner surface facing the battery components and an outer surface opposite to the inner surface; and electrode leads electrically connected to the electrode assembly and extending through the inflatable pouch case from the inside of the inflatable pouch case to an outside of the inflatable pouch case; the battery being characterized in that the outer surface of the inflatable pouch case is sealingly bonded to a surface of each of the electrode leads.

SEPARATOR AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: EP4712247A1

Embodiments of the present application provide a separator, a preparation method thereof, a secondary battery, and an electric apparatus. The separator includes a first base film, a coating, and a second base film, where the coating is disposed between the first base film and the second base film, the coating includes an ion-trapping agent, and a reduction potential of the ion-trapping agent relative to lithium metal is 0 V to 2 V. A secondary battery containing the separator exhibits improved cycling performance.

ELECTROCHEMICAL ENERGY STORAGE ELEMENT

Resumen de: EP4712178A1

Ein elektrochemisches Energiespeicherelement (12) weist einen hohlzylindrisch geformten Wickelverbundkörper (10) auf, der eine spiralförmige Struktur aus mindestens zwei spiralförmig um eine Wickelachse gewickelten Elektrodenbändern (14, 24) und mindestens einem zwischen den Elektrodenbändern (14, 24) angeordneten Separatorband (38, 40) aufweist. Der hohlzylindrisch geformte Wickelverbundkörper (10) umfasst zwei endständige Stirnseiten (34, 36), eine umlaufende äußere Verbundkörpermantelfläche (42), und einen axial ausgerichteten Hohlraum (46) im Zentrum des Verbundkörpers (10), in dem ein elektrisch leitender Wickelkern (50) angeordnet ist. Der Wickelverbundkörper (10) ist in einem zylindrischen Gehäuse (60) mit einem Boden (61) und einem Deckel (62) angeordnet, derart, dass die Stirnseiten (34, 36) in Richtung des Bodens (61) und des Deckels (62) weisen. Das Energiespeicherelement (12) umfasst weiter elektrisch leitende Kontaktelemente (70, 80), die flach auf den Stirnseiten (34, 36) aufliegen.Es wird vorgeschlagen, dass der Wickelkern (50) derart ausgebildet und/oder angeordnet ist, dass er bei axialer Deformation des Gehäuses (60) das erste elektrisch leitendes Kontaktelement (70) und das zweite elektrisch leitende Kontaktelement (80) elektrisch verbindet.

METHOD AND SYSTEM FOR DETERMINING A CHARGING CURRENT LIMIT FOR A CHARGING PROCESS OF A RECHARGEABLE BATTERY

Resumen de: WO2025010459A1

The invention relates to a method (100), a computer program product, a control system (10) and a battery charging system (90) for determining a charging current limit for a charging process of a rechargeable battery device (1000). In this case, measurement parameters (MP) are recorded at the battery device (1000). Furthermore, battery parameters (BP) are determined by means of a process physics-based battery model on the basis of the recorded measurement parameters (MP). Furthermore, prediction parameters (VP) for the onset of metal plating at an electrode (1001, 1002) of the battery device (1000) are determined with the aid of a prediction model, in particular a data-driven prediction model, wherein at least one forecast onset time of metal plating is determined as prediction parameter(s) (VP) on the basis of at least the battery parameters (BP) as input parameters of the prediction model. Control parameters (KP) for controlling the charging process are determined with the aid of a control model, which is likewise in particular a data-driven control model, wherein on the basis of the measurement parameters (MP), the battery parameters (BP) and the prediction parameters (VP), the charging current limit is determined as the at least one control parameter (KP) and the determined charging current limit for specifying the charging current is output to a battery charging system (90).

DEVICE FOR CHECKING THE TIGHTNESS OF ELECTROCHEMICAL CELLS

Resumen de: WO2024230864A1

The invention relates to a device (1) for checking the tightness of electrochemical cells (2), in particular with regard to H2 tightness. The device has a chamber (3) for accommodating and checking at least one electrochemical cell (2). For the purpose of the check, the chamber (3) is subjected to a vacuum. A unit (6) for gas supply is provided, which supplies an electrochemical cell (2) to be checked with compressed air, as a result of which the interior of the electrochemical cell (2) is pressurized. This is made possible particularly advantageously in that the pressure difference between the interior of the cell (2) having the excess pressure and the chamber (3) having the vacuum is particularly high and is additionally varied periodically. As a result, there is a particular incentive for a periodically varying gas transfer between the interior of the cell (2) and the chamber (3) under vacuum, which allows for the tightness to be checked particularly advantageously and meaningfully. The pressure sensor (7) allows for a periodic pressure increase in the chamber (3) to be detected and to be analyzed by means of the control unit (8), and for meaningful information regarding insufficient tightness to be obtained, without interference by non-periodic interfering effects, and made available to the user. The device according to the invention can detect very minor leaks, which for example lead to leakage rates in the range of 10-4 mbar per liter of the volume and per second, and a

MODULE FOR DETECTING A BATTERY LEVEL OF CHARGE, ASSEMBLY COMPRISING THE MODULE, AND AIRCRAFT COMPRISING THE ASSEMBLY

Resumen de: CN121100283A

The present invention relates to a battery charge level detection module (1) comprising: an ammeter (10) comprising a magnetometer (15) and a current measurement device (18), a voltmeter (20) comprising a first contact terminal (22), a second contact terminal (24) and a voltage measurement device (28), a temperature sensor (30) comprising a temperature sensor (30), a housing (50), a first attachment (52) and a second attachment (52), the invention relates to a magnetometer (10) comprising a housing (50) intended to be attached to a first interconnection line row (82) and a second interconnection line row (84), the housing (50) having a housing (58) housing a magnetometer (15), the housing (52) being intended to be received in a measurement aperture (83) of the first interconnection line row (82), a first attachment (52) for attaching the housing (50) to the first interconnection line row (82), and a second attachment (52) for attaching the housing (50) to the second interconnection line row (84). And a second attachment (54) for attaching the housing (50) to a second interconnection line row (84).

SYSTEM FOR A BICYCLE INCLUDING AN ENERGY STORAGE DEVICE

Resumen de: EP4711178A1

A system for an electric bicycle (50) includes an energy storage device (102). The energy storage device (102) includes a housing that is mountable to a frame (52) of the electric bicycle (50), battery cells disposed within the housing, and output power terminals supported by the housing and electrically connectable to the battery cells. The energy storage device (102) includes a processor and a first wireless communication device. The system includes a human/machine interface (HMI) electrically connected to the energy storage device (102) via the output power terminals. The HMI includes a second wireless communication device. The processor is configured to change a mode of the energy storage device (102) based on a signal received by the first wireless communication device from the second wireless communication device.

BATTERY MANAGEMENT SYSTEM, OPERATING METHOD THEREOF, AND BATTERY PACK

Resumen de: EP4712300A1

A battery management system (BMS) including a memory in which a resistance value of a wiring resistor of an electrical connection path between a battery cell and the BMS is stored, and a processor configured to measure a first cell voltage of the battery cell and to remove a voltage error due to the wiring resistor reflected in the measured first cell voltage based on the resistance value of the wiring resistor stored in the memory to estimate a second cell voltage that is an actual voltage of the battery cell.

APPARATUS FOR INSPECTING DRYNESS OF ELECTRODE, METHOD FOR INSPECTING DRYNESS OF ELECTRODE, AND METHOD FOR MANUFACTURING ELECTRODE AND SECONDARY BATTERY

Resumen de: EP4711745A1

According to an embodiment of the present disclosure, provided is a device for inspecting the dryness of an electrode, comprising:a transport unit that transports the electrode to an electrode drying zone,an irradiation unit including a collimating lens which is fixed in a state of being tilted by 10 to 20 degrees with respect to the direction perpendicular to the transport direction of the electrode at an upper part separated from the electrode, and an optical fiber that irradiates a light source through the collimating lens,a measurement unit including a spectrometer and a light source respectively connected to the irradiation unit, and a spectrometer hub connected to the spectrometer, anda control unit including a display device connected to the spectrometer hub, a method for inspecting the electrode dryness that predicts electrode dryness from the measured reflectance through the device for inspecting the dryness of an electrode, a method for manufacturing an electrode for a secondary battery to which the electrode dryness inspecting method is applied, and a method for manufacturing a secondary battery including the same.

BATTERY CELL AND BATTERY MODULE INCLUDING THE SAME

Resumen de: EP4712218A1

A battery cell and a battery module including the same are disclosed. A battery cell includes an electrode assembly, a case accommodating the electrode assembly, a cap plate sealing the case, a pair of terminals protruding from the cap plate and spaced apart from each other in a first direction, a vent between the terminals, a first insulation sheet facing the cap plate, and a second insulation sheet extending from the first insulation sheet and facing the case.

BATTERY MODULE AND BATTERY PACK WITH REINFORCED SAFETY

Resumen de: EP4712245A1

Disclosed is a battery module with an improved safety by appropriately controlling venting when a thermal event occurs inside the battery module. The battery module includes a cell assembly having at least one battery cell; a module case configured to accommodate the cell assembly in an inner space thereof and having a venting hole formed therein to discharge a venting gas generated from the cell assembly; and a venting unit provided at an outer side of the module case and having a venting channel so that the venting gas discharged from the venting hole is introduced therein and discharged to the outside, the venting unit having a protrusion configured to protrude toward an outer surface of the module case from the inside of the venting channel.

BATTERY

Resumen de: EP4712223A1

A battery of the present disclosure includes: an electrode body including a solid electrolyte; a case housing the electrode body; and a resin body provided in gaps between the case and end surfaces of the electrode body. The resin body includes a first layer laminated on the end surfaces of the electrode body and a second layer laminated on the first layer. A resin component of the first layer is a resin having a hydroxy group that is less than 100 ppm. The second layer is a layer that electrically insulates the electrode body and the case.

REMOTE BATTERY MANAGEMENT

Resumen de: EP4712305A1

A computer program product is provided according to some embodiments. The computer program product includes a non-transitory computer-readable storage medium storing a set of instructions, which, when executed by a computing device, causes the computing device to: (a) determine a discharge rate for a battery at a remote location based on a profile of the battery and a temperature value; (b) receive, at an initial time, a notification of the battery ceasing to be in communication with the computing system; (c) in response to receiving the notification, estimate an amount of time remaining until the battery self-discharges to a lower threshold state of charge (SoC); and (d) in response to elapsed time since the initial time reaching the estimated amount of time, output a signal from the computing system indicating a battery-discharge condition. A corresponding method, apparatus, and system are also provided.

ELECTRODE AND SECONDARY BATTERY

Resumen de: EP4712155A1

An electrode and a secondary battery are disclosed. An electrode includes a substrate, and a coating layer including a first coating layer coated on a side of the substrate in a first direction, and a second coating layer coated on another side of the substrate in a second direction, and the coating layer includes a first layer and a second layer located on the first layer and defining a step with the first layer.

BATTERY, BATTERY PACK COMPRISING BATTERY, AND VEHICLE COMPRISING BATTERY PACK

Resumen de: EP4712254A1

A battery according to an embodiment of the present disclosure may include: an electrode assembly comprising an electrode tap having a vulnerable portion formed thereon; a battery housing configured to receive the electrode assembly through an opening formed on one side thereof; a current collector comprising a tap coupling portion electrically coupled to the electrode tap and a housing coupling portion electrically coupled to the battery housing; and a cap configured to cover the opening.

ENERGY RELEASE DEVICE AND METHOD FOR POWER BATTERY

Resumen de: EP4712204A1

The present disclosure provides an energy release device and method for a power battery. The energy release method for a power battery comprises: acquiring a thermal runaway signal of battery cells in the power battery; and electrically communicating the power battery with a discharge element, so that the power battery is discharged to a maximum safe state of charge that satisfies a mild exothermic reaction under the condition of thermal runaway, or a state of charge below the maximum safe state of charge, wherein satisfying the mild exothermic reaction is that the temperature per unit volume of the battery cells in the power battery under the condition of thermal runaway does not exceed the temperature at which the thermal runaway is triggered. According to the solution provided by the present disclosure, the development of thermal runaway in a power battery pack can be effectively delayed, time is bought for passenger escape and subsequent thermal runaway control processing, meanwhile, the destructive power of thermal runaway is reduced, and the safety management capability of the power battery is improved.

ELECTRIC BATTERY PACK WITH IMPROVED SYSTEM FOR DISTRIBUTING A TEMPERATURE-REGULATING LIQUID

Nº publicación: EP4711187A1 18/03/2026

Solicitante:

FIAT RICERCHE [IT]
C.R.F. Societ\u00E0 Consortile per Azioni

Resumen de: EP4711187A1

An electric battery pack (1) comprises a plurality of electric battery groups. Each group comprises a plurality of battery cells (4), arranged side by side along a first horizontal direction (X). The different groups of battery cells (4) are arranged in at least one row along a second horizontal direction (Y) orthogonal to the first horizontal direction (X). The battery pack (1) is configured to receive a flow of a temperature-regulating liquid that passes through the battery pack (1) so as to come into direct contact with the battery cells (4). A system for distributing the temperature-regulating liquid includes a longitudinal feeding channel (6) and a plurality of transverse channels (7) extending beneath each group of battery cells (4) along said first horizontal direction (X). The transverse channels (7) are defined by a lower support structure (5) on which the battery cells (4) are supported and including a lower wall (50), an upper wall (51) parallel to and spaced above the lower wall (50) and formed integrally, or rigidly connected, with said lower wall (50), and a plurality of internal ribs (5B) parallel to and spaced apart from each other extending along the first horizontal direction (X) between the lower wall (50) and the upper wall (51). Each transverse channel (7) has a closed cross-section, defined by the lower wall (50), the upper wall (51), and two of the internal ribs (5B) of the lower support structure (5). In the upper wall (51) of the lower support structu