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ELECTROLYTIC SOLUTION, ELECTROLYTE COMPOSITION, AND ELECTROCHEMICAL ELEMENT

Resumen de: EP4773292A1

0001 To provide an electrolytic solution, an electrolyte composition, and electrochemical element, which can attain an enhanced transport number of ions involved in energy conversion. The electrolytic solution contains a non-aqueous solvent, and satisfies b*≥2 in the chromatic coordinates of CIE 1976L*a*b* color space. The electrolytic solution preferably satisfies 1≤L*≤3. Also, the electrolytic solution preferably has a chroma defined by c<*>={(a<*>)<2>+(b<*>)<2>}<1/2> of 2≤c<*>≤8. The electrolyte composition contains an electrolytic solution and particles of an oxide solid electrolyte. The electrochemical element has an electrode containing the electrolytic solution.

ELECTROLYTE DERIVED FILMS FOR ELECTROCHEMICALLY STABILIZING ELECTRODES CONTAINING FIBRILLATED POLYMERS

Resumen de: WO2025049433A1

The present invention relates to electrodes formed with a polymer having stabilizing film(s), methods of providing the stabilizing film(s) and electrolyte compositions which can form the stabilizing film(s).

BATTERY PACK

Resumen de: EP4773372A1

0001 The present application discloses a battery pack, including: a battery box, wherein a battery module is arranged in the battery box, and a bottom of the battery module is provided with an explosion-proof valve; and a bottom protection plate assembly including a liquid cooling plate and a bottom protection plate component, and the liquid cooling plate is mounted at the bottom of the battery module. By providing the bottom protection plate assembly and the liquid cooling plate at the bottom of the battery box, a protection effect on the battery module arranged in the battery pack is improved, use safety of the battery pack is ensured, a use effect is better, and an application range is wider.

COMPOSITION FOR NON-AQUEOUS ELECTROLYTE, AND ELECTROCHEMICAL CELL COMPRISING COMPOSITION

Resumen de: EP4773309A1

The present disclosure relates to a non-aqueous electrolyte composition including a mixed solvent and selectively containing dual lithium salts, and to an electrochemical cell including the same.

AEROSOL GENERATING DEVICE AND OPERATING METHOD THEREFOR

Resumen de: EP4772057A1

0001 An aerosol generating device according to an embodiment includes a battery detachably disposed in a receiving portion, a battery monitoring unit configured to measure operation information of the battery, and a controller including an internal resistance calculation unit configured to calculate internal resistance of the battery based on the operation information of the battery. The controller is configured to determine whether the battery is normally mounted in the receiving portion by comparing a value of the calculated internal resistance with a preset reference value range.

METAL OXIDE AND USE THEREOF

Resumen de: EP4772470A1

The present invention relates to a metal oxide and use thereof. The metal oxide has a face-centered cubic structure, the space group is Fd-3m, the lattice constant a of the metal oxide is 8.32 Å to 8.37 Å, and in the metal oxide, the tensile residual stress F₁ is 0.105 MPa to 5.51 MPa, or the compressive residual stress F₂ is 1.05 MPa to 8.6 MPa. The metal oxide is prepared by spray pyrolysis with a pyrolysis rate K ranging from 0.361 to 48.611. The metal oxide of the present invention not only has a higher degree of crystallinity and high stability, but also has a high activity, which is beneficial to improve the intercalation of sodium ions or lithium ions when preparing a cathode material, thereby improving the comprehensive electrical performance.

ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS USING SAME

Resumen de: EP4773205A1

0001 An electrochemical apparatus is provided, including a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode current collector and a positive electrode active layer disposed on at least one surface of the positive electrode current collector. The positive electrode active layer includes a central region and an edge region surrounding an outer periphery of the central region, the edge region includes a first positive electrode active material, and the central region includes a second positive electrode active material. A solid-phase diffusion coefficient of the first positive electrode active material is 10<-15> cm<2>/s to 10<-5> cm<2>/s, and a ratio of the solid-phase diffusion coefficient of the first positive electrode active material to a solid-phase diffusion coefficient of the second positive electrode active material is 1:3 to 1:1.05. The above electrochemical apparatus is conducive to reducing a difference in kinetic performance between the central region and the edge region, thereby enhancing overall capacity utilization of the electrochemical apparatus and improving overall performance of the electrochemical apparatus. This application further provides an electronic apparatus using the electrochemical apparatus.

ELECTRODE SHEET, JELLY ROLL, CYLINDRICAL BATTERY AND BATTERY PACK

Resumen de: EP4773408A1

The present disclosure provides an electrode sheet, a winding core, a cylindrical battery, and a battery pack. A plurality of tabs are provided at one side of the electrode sheet at intervals The electrode sheet includes at least two segments in a first direction. Each segment of the at least two segments has at least one of the plurality of tabs. A length of the tab in the first direction is a width of the tab, a length of the tab in a second direction is a height of the tab, and the second direction is perpendicular to the first direction. For the at least one tab located in the same segment, the tab has the same width and the same height. For tabs respectively located in different segments, the tabs have different widths and/or different heights.

ELECTRODE SHEET AND MANUFACTURING METHOD THEREFOR, SECONDARY BATTERY AND ELECTRICAL APPARATUS

Resumen de: EP4773202A1

This application discloses an electrode plate, a manufacturing method thereof, a secondary battery, and an electric apparatus. The electrode plate includes a current collector, an active material layer, a conductive member, and an insulating layer. The current collector includes a first portion and a second portion adjacently disposed along a first direction. The active material layer is disposed on the first portion, and the active material layer includes a first covering portion and a second covering portion sequentially disposed along the first direction, where along a thickness direction of the current collector, a thickness of the second covering portion is less than a thickness of the first covering portion. The conductive member is connected to the second portion. The insulating layer is disposed on the second portion, on at least part of a surface of the conductive member away from the current collector, and on at least part of a surface of the second covering portion away from the current collector. Compared with existing electrode plates, the electrode plate with the above structure can reduce a risk of excessive thickness at an edge of the active material layer caused by the insulating layer being applied onto the active material layer during manufacturing, and is conducive to increasing the energy density of the secondary battery.

SYSTEM AND METHOD FOR REUSING AN ELECTRIC VEHICLE BATTERY

Resumen de: EP4773340A2

0001 A device for enabling the reuse of a complete battery pack for electric vehicles (EV) is disclosed. The device allows reuse of a battery pack at a significantly lower cost than alternative methods that require the battery pack to be opened, batteries to be taken out and installed in a new pack with a new battery monitoring system (BMS), and undergoing certification as a new system. The disclosed device includes a controller having a software program operating therein and which is electrically coupled to a battery pack and provides electrical input and output signals to the BMS of the EV battery, which relate to optimal operating parameters of the battery pack including depth of discharge (DoD), depth of charge (DoC), charge rate, and temperature. The controller enables reuse of the complete battery pack without reopening and mimics electrical signaling compared to a car or other electric vehicles.

DIGITAL ACCESS SYSTEM FOR VEHICLES FOR CHARGING CONTROLLED FROM THE OUTSIDE

Resumen de: EP4772389A2

Die Erfindung betrifft ein digitales Zugangssystem (1), ein Elektrofahrzeug (100) mit einem solchen Zugangssystem und ein Verfahren (200) zur Gewährung einer Zugangsberechtigung zu einem Elektrofahrzeug mit einem solchen Zugangssystem, das eine Freischalteinheit (11) zur Positionierung in dem Fahrzeug (100), mindesten eine Zugriffseinheit (12) und mindestens eine Aktivierungseinheit (13) zur Verwendung außerhalb des Fahrzeugs (100) umfasst, wobei die Aktivierungseinheit (13) mittels drahtloser Datenkommunikation (21) zu der Freischalteinheit (11) die Freischalteinheit (11) zumindest für einen Zeitraum aktiviert, die Zugriffseinheit (12) mittels einer zur vorherigen Datenkommunikation (21) separaten unabhängigen drahtlosen Datenkommunikation (22) mit der vorher aktivierten Empfangseinheit (11) einen Zugang zum Fahrzeug (100) von außen veranlasst, wobei die Freischalteinheit (11) in Reaktion auf die Datenkommunikation (22) mit der Zugriffseinheit (12) Steuersignale (14) an die Systemsteuerung (110) zur Ansteuerung des Verriegelungssystems und Freigabe zumindest einer verriegelnden Komponente (140) zur Ermöglichung des Zugangs zum Fahrzeug zu dessen Ladung zu übermittelt.

METHOD OF PREPARING POSITIVE ELECTRODE

Resumen de: EP4773236A2

The present invention relates to a method of preparing a positive electrode which includes forming a solid electrolyte by mixing a lithium salt and a polymer for a solid electrolyte in a dry atmosphere, forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere, and pressing after coating a current collector with the dry mixture.

BATTERY CONTROL APPARATUS AND BATTERY CONTROL METHOD

Resumen de: EP4773469A2

0001 A battery control apparatus and a battery control method are disclosed. The battery control apparatus according to an embodiment of the present disclosure includes a measuring unit for measuring a voltage of a battery and outputting a voltage measurement value representing the measured voltage, a memory for storing a multi-stage charging protocol data including a first current rate, a second current rate used in another constant current charging procedure following a constant current charging procedure using the first current rate, and a first criterion SOC associated with the first current rate, and a processor for identifying a SOC of the battery based on the voltage measurement value. The processor performs a temporary discharging procedure, when the SOC of the battery reaches the first criterion SOC while the constant current charging procedure using the first current rate is in progress, determines an adjusted second current rate different from the second current rate, based on discharging information of the temporary discharging procedure, and performs a constant current charging procedure using the adjusted second current rate, after the temporary discharging procedure is finished.

BATTERY CELL AND MANUFACTURTING METHOD THEREOF

Resumen de: EP4773358A2

0001 The present disclosure relates to a battery cell and a manufacturing method thereof. The battery cell according to one embodiment of the present disclosure includes an electrode assembly including a cathode, an anode and a separator; and a battery case including a sealing portion that houses the electrode assembly and seals an outer periphery of the electrode assembly, wherein the sealing portion includes a first area, and a second area excluding the first area, and wherein the first area is an area where the crystallinity of the battery case is higher than that of the second area.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4773318A1

0001 The present application discloses a battery cell, a battery, and an electrical device. The battery cell comprises a casing, an electrode terminal, an electrode assembly, and a first insulating member. The casing has a first wall and a second wall, and the second wall surrounds the edge of the first wall. The electrode terminal is mounted on the first wall in an insulating manner. The electrode assembly is accommodated in the casing. The electrode assembly comprises a main body portion, a first tab and a second tab, and the first tab and the second tab have opposite polarities. In a thickness direction of the first wall, the main body portion has a first end surface close to the first wall, and the first tab and the second tab are both provided on the first end surface. The first tab is electrically connected to the electrode terminal, and the second tab is electrically connected to the casing. The first insulating member is provided on the outer peripheral surface of the main body portion, and a portion of the first insulating member is located between the first tab and the second wall, so that the first tab and the second wall are insulated and isolated from each other. The technical solution provided in the present application can improve the reliability of the battery.

ELECTROCHEMICAL APPARATUS AND ELECTRICAL DEVICE

Resumen de: EP4773403A1

0001 An electrochemical apparatus (100) and an electric device are provided. The electrochemical apparatus (100) includes: a housing (1), a first feedthrough member (7), an electrode assembly (2), and a first tab (3). The housing (1) is provided with an accommodating cavity (14). The electrode assembly (2) is accommodated in the accommodating cavity (14). The housing (1) includes a first side plate (131). The first feedthrough member (7) runs through the first side plate (131), and the first feedthrough member (7) is insulated from the first side plate (131). The first tab (3) is connected to the electrode assembly (2). The electrochemical apparatus (100) further includes a first adapter (5), where the first adapter (5) is accommodated in the accommodating cavity (14). The first tab (3) is provided with a first bending groove (324). One end of the first adapter (5) is connected to a groove wall of the first bending groove (324), and another end of the first adapter (5) is electrically connected to the first feedthrough member (7). Along a thickness direction of the first side plate (131), a projection of the first tab (3) does not overlap with a projection of the first feedthrough member (7). The above manner is conducive to reducing a dimension of the electrochemical apparatus (100) in a width direction. When the dimension of the electrochemical apparatus (100) in the width direction remains unchanged, more space can be left for the electrode assembly (2), which is conduc

BATTERY THERMAL RUNAWAY EARLY-WARNING METHOD AND APPARATUS, ELECTRONIC DEVICE, AND STORAGE MEDIUM

Resumen de: EP4773329A1

The present application provides a battery thermal runaway warning method and apparatus, an electronic device and a storage medium. With the method, electrical performance data sequences of a battery to be detected are obtained, filtering and detection processing is performed on the electrical performance data sequences to obtain filtered electrical performance data, it is determined whether the battery meets a preset alarm condition based on the filtered electrical performance data, and a warning signal is output when the battery meets the preset alarm condition, thereby improving the accuracy and effectiveness of the warning of thermal runaway of the battery.

POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, AND BATTERY

Resumen de: EP4773238A1

The present application provides a positive electrode material, a method for preparing the same, a positive electrode plate, and a battery. The positive electrode material includes a positive electrode active material, which includes a ternary single-crystal material and lithium manganese iron phosphate. The crystal of the ternary single-crystal material has a lattice spacing satisfying the equation of a₁=b₁, where the lattice spacing a₁ ranges from 2.7 Å to 3.0 Å, and the lattice spacing c₁ ranges from 13.5 Å to 15.0 Å. The crystal of lithium manganese iron phosphate has a lattice spacing satisfying the equation of a₂=b₂, where the lattice spacing a₂ ranges from 6.1 Å to 6.4 Å, and the lattice spacing c₂ ranges from 4.6 Å to 5.0 Å.

TERMINAL POST, TERMINAL ASSEMBLY AND BATTERY

Resumen de: EP4773418A1

0001 The present application provides a pole, a terminal assembly, and a battery cell. The pole includes: a base (1) including a first surface (11); and a cylindrical body (2) disposed on the first surface (11). The cylindrical body (2) includes a second surface (23) away from the base (1), the second surface (23) is provided with a heat conduction groove (3), and the heat conduction groove (3) is filled with a heat conduction material (4).

SECONDARY BATTERY, ELECTRIC DEVICE AND PREPARATION METHOD FOR SECONDARY BATTERY

Resumen de: EP4773200A1

A secondary battery includes a negative electrode plate, where the negative electrode plate includes a current collector and a first active material layer, the first active material layer is disposed on at least one surface of the current collector, the first active material layer includes a silicon-based material and a solid-state electrolyte, and the solid-state electrolyte is at least partially bound to a surface of silicon in the silicon-based material. In the secondary battery and an electric device, the solid-state electrolyte is at least partially bound to the surface of silicon in the silicon-based material, mitigating the issue of silicon-based material swelling and enhancing the structural integrity and stability of the negative electrode plate. In addition, as compared to a silicon-based material coated with a binder in the prior art, the use of a solid-state electrolyte can improve the lithium intercalation capability of the silicon-based material and increase the ion conduction rate in the negative electrode plate, thus mitigating the issue of deteriorated kinetic performance of the secondary battery caused by coating a binder on the silicon-based material.

SECONDARY BATTERY AND ELECTRIC EQUIPMENT

Resumen de: EP4773201A1

This application relates to the technical field of electrochemical apparatuses, and in particular, to a secondary battery and an electric device. The secondary battery includes a negative electrode plate, where the negative electrode plate includes a current collector, a first active material layer, and a second active material layer, the first active material layer is disposed on at least one surface of the current collector, the second active material layer is disposed on a side of the first active material layer facing away from the current collector, the first active material layer includes a silicon-based material and a first graphite material, the second active material layer includes a second graphite material and an inorganic material, and a ratio of a particle size D_v50 of the inorganic material to a particle size D_v50 of the second graphite material is less than 0.23. The secondary battery and the electric device can improve the problem of overpressure of the second active material layer, suppression by the second active material layer on swelling of the silicon-based material can be maintained, and structural integrity and structural stability of the negative electrode plate can be enhanced.

BATTERY STACKING METHOD AND SYSTEM

Resumen de: EP4773269A1

0001 Embodiments of the present disclosure provide a battery stack method and system. The battery stack system at least includes a controller, a base support, and a stacking table and a grabbing apparatus that are disposed on the base support. The battery stack method includes: in response to that a tray on the stacking table is in place, determining battery cell information stored in the tray; determining battery cell information of a target battery cell on a battery cell conveying line; and in the case that the battery cell information stored in the tray matches the battery cell information of the target battery cell, controlling the grabbing apparatus to grab the target battery cell and place the target battery cell in the tray.

TRAY, BATTERY PRODUCTION LINE AND CONTROL METHOD

Resumen de: EP4772458A1

0001 A pallet, a battery production line, and a control method are provided. The pallet includes a pallet body, at least two first position-limiting assemblies, and a second position-limiting assembly. The pallet body includes a placement region configured to place a battery cell. One part of the first position-limiting assemblies is disposed on one side of the placement region along a first direction, and the other part of the first position-limiting assemblies is disposed on the other side. The first position-limiting assemblies include a first position-limiting block that is movable along the first direction. The first position-limiting block is provided with a first position-limiting surface and a second position-limiting surface. The second position-limiting assembly is disposed on a side of the placement region along a second direction. The second position-limiting assembly includes a second position-limiting block that is movable along the second direction. The second position-limiting block is provided with a third position-limiting surface. The second position-limiting surface and the third position-limiting surface are respectively located on opposite sides of the placement region along the second direction.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4773320A1

0001 According to the present invention, a positive electrode active material contains a lithium-containing composite oxide, a negative electrode active material contains a silicon-containing material, and the discharge capacity per 1.0 g of a negative electrode mixture layer (52) is at least 0.5 Ah. A negative electrode lead (21) is connected to a winding start-side end part of a negative electrode (12). The negative electrode (12) has, on a winding start side of an electrode body (14), a non-facing part (61) that does not face a positive electrode (11), and the negative electrode mixture layer (52) is provided on at least a part of at least one surface of the non-facing part (61). When the distance between a negative electrode current collector (51) of a first starting end facing part (12a) in the negative electrode (12), which faces a winding start end (11a) of the positive electrode (11) on an outer winding side, and a negative electrode current collector (51) of a second starting end facing part (12b) in the negative electrode (12), which faces the winding start end (11a) on an inner winding side, is x, and the thickness of the negative electrode mixture layer (52) in the first starting end facing part (12a) is y, x/y>4.5 is satisfied.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Nº publicación: EP4773355A1 08/07/2026

Solicitante:

PANASONIC IP MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd.

Resumen de: EP4773355A1

This nonaqueous electrolyte secondary battery (10) includes: an electrode body (60); and a laminate sheet outer casing (12) which is obtained by folding a laminate sheet including an adhesive resin layer in two along a bottom part (17). The laminate sheet outer casing has: a top part (16) from which a positive electrode tab and a negative electrode tab are derived from an overlapping part of the outer peripheral part of the laminate sheet; and two side parts (18, 20) which connect the top part and the bottom part to each other. The laminate sheet outer casing has a housing part (13) that houses the electrode body inside the overlapping part. Sealing parts (30, 40) are formed on the top part and the two side parts. Each side part has non-sealed parts (31, 41) that are connected to the housing part and the bottom part. Each non-sealed part is separated from the top part.