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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.

BATTERY, BATTERY MANAGEMENT SYSTEM, AND ELECTRIC DEVICE

Resumen de: EP4773333A1

0001 A battery (100), a battery management system (400), and an electric device (500). The battery (100) comprises: a case (10); a liquid leakage detection member (20), the liquid leakage detection member (20) being arranged in the case (1) to detect liquid in the case (10), and the liquid leakage detection member (20) being adapted to be communicationally connected to a control device (200) so that the control device (200) controls an alarm device (300) to operate; and a liquid drainage member (30), the liquid drainage member (30) being arranged in the case (10), and the liquid drainage member (30) being fixedly arranged on the bottom wall (11) of the case (10).

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4773354A1

A battery (100) and an electric device. The battery (100) comprises battery cells (10) and a separation component (30). Each battery cell (10) has a casing (11). In a first direction (x), the separation component (30) is arranged on one side of a battery cell (10), and the separation component (30) is used for separating the battery cell (10) from another component adjacent to the battery cell (10). In the first direction (x), the casing (11) has a first wall (12) facing the separation component (30). The first wall (12) has a first body portion (120) and a first thickened portion (121) arranged in a second direction (z), wherein the thickness of the first thickened portion (121) is greater than the thickness of the first body portion (120), and the first direction (x) and the second direction (z) are perpendicular to each other. In the second direction (z), the first thickened portion is located on one side of the separation component (30); and in the first direction (x), the first thickened portion (121) protrudes towards the separation component (30) relative to the first body portion (120) and is used for limiting the displacement of the separation component (30) in the second direction (z). Thus, the reliability of the battery can be improved.

SOLVENT EXTRACTION METHOD FOR SELECTIVELY EXTRACTING COBALT

Resumen de: EP4772658A1

A solvent extraction method for selectively extracting cobalt from a leachate containing at least the cobalt and nickel, the leachate being obtained by subjecting a lithium-ion battery waste to hydrometallurgical processing, the method comprising: a step A of adding a halide salt having an amine chelate skeleton to the leachate; and a step B of selectively extracting the cobalt from the leachate by using neodecanoic acid as an extractant.

TERNARY POSITIVE ELECTRODE MATERIAL PRECURSOR, PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4772476A1

The present disclosure provides a ternary positive electrode material precursor, a preparation method therefor, and use thereof. The alkali content of the reaction system is precisely controlled by balancing the flow rates of the metal salt solution and the nitrogen gas, so as to ensure that needle-shaped primary particles are formed and to control the growth orientation of crystal planes of a crystal, so that the crystal planes grow in a certain orientation. On different crystal planes, by controlling the flow rate of the metal salt solution, the growth units are allowed to continuously diffuse to the crystal surface then embed into the crystal lattice from desired sites of the surface, thus keeping the ratio of the grain sizes in the range mentioned above. The method can precisely control the ratio of the grain sizes of the ternary positive electrode material precursor. The ternary positive electrode material can follow the orientation of the crystal plane of the precursor, thereby optimizing the orientation of the crystal plane of the ternary positive electrode material, which can facilitate the lithium ions deintercalation. Thereby cycle performances of the positive electrode material can be improved.

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

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.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4773401A1

Provided are a battery (100) and an electric device. The battery (100) includes an insulation board (20), a circuit board (30), and a battery cell (10). The circuit board (30) is disposed on the insulation board (20). In a thickness direction (X) of the insulation board (20), the battery cell (10) is disposed on a side of the insulation board (20). An end of the battery cell (10) facing the insulation board (20) is provided with an electrode terminal (11). A busbar (40) is disposed on the insulation board (20); the busbar (40) includes a first connection layer (41), a second connection layer (42), and a first bent layer (43) connecting the first connection layer (41) and the second connection layer (42); the first connection layer (41) includes a main body region (411) and a connection region (412); the main body region (411) and the second connection layer (42) overlap in the thickness direction (X); the connection region (412) and the second connection layer (42) do not overlap in the thickness direction (X); the connection region (412) is connected to at least one of the electrode terminal (11), the insulation board (20), and the circuit board (30).

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4773349A1

0001 The present application provides a battery cell (20), a battery (100), and an electrical device. The battery cell (20) comprises: a casing (21), electrode assemblies (22), and a thermal insulation member (23). The casing (21) has an accommodating cavity (211); a plurality of electrode assemblies (22) are provided, and the plurality of electrode assemblies (22) are accommodated in the accommodating cavity (211); the thermal insulation member (23) is arranged between two adjacent electrode assemblies (22), wherein the thickness H of the thermal insulation member (23) and the energy E of each electrode assembly (22) satisfy the relationships: 25 Wh/mm ≤ E/H ≤ 750 Wh/mm.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4773314A1

0001 This application relates to a secondary battery and an electronic device. The secondary battery includes a housing, a pole, and a sealing assembly. The pole includes a first portion, a second portion, and a third portion. The first portion is disposed within the housing. One end of the second portion is connected to the first portion, and another end thereof extends out of the housing through a first through hole of the housing. The third portion is connected to the second portion outside the housing. The pole further includes a first recess. An opening of the first recess is located on a surface of the third portion facing away from the second portion. An outer surface of the second portion is provided with a first concave-convex structure. The sealing assembly includes a first sealing ring, a second sealing ring, and a third sealing ring, where the first sealing ring of the sealing assembly is disposed between a first wall surface of the housing and the first portion, the second sealing ring surrounds the second portion, and the third sealing ring is disposed between a second wall surface and the third portion. The secondary battery and the electronic device provided by this application may address the technical issue of poor sealing performance due to insufficient strength and high possibility of deformation of the pole of the secondary battery.

SECONDARY BATTERY AND PREPARATION METHOD THEREFOR

Resumen de: EP4773315A1

This application proposes a secondary battery and a preparation method thereof. An outermost electrode plate of an electrode assembly is a first outer electrode plate, where the first outer electrode plate includes a first current collector and a first active material layer; the first current collector has a first surface facing a first direction and a second surface facing a second direction; the first active material layer is disposed on the second surface; the first direction is a stacking direction of electrode plates and separators of the electrode assembly; and the second direction is opposite to the first direction. The secondary battery further includes a plurality of first adhesive layers, where a portion of the first adhesive layer is bonded between the first surface and an inner wall of an accommodating portion, and another portion of the first adhesive layer is bonded to the first surface and at least a portion of the separator. The provision of the first adhesive layer can reduce the shrinkage of the separator and improve drop resistance of the secondary battery.

COATING DIE AND COATING DEVICE

Resumen de: EP4772285A1

Provided are a coating die and a coating device. The coating die includes a die body (10) and a pressure adjustment component (20). The die body is provided with a feed port (K1) and a discharge port (K2) that are opposite. The die body includes a first accommodating cavity (11) and a second accommodating cavity (12) that communicate with each other. The first accommodating cavity is located on a side of the second accommodating cavity close to the feed port in a first direction (X) and communicates with the feed port. The second accommodating cavity communicates with the discharge port. The pressure adjustment component is accommodated in the second accommodating cavity. The pressure adjustment component includes a plurality of pressure adjustment plates (21). The plurality of pressure adjustment plates are spaced apart in a second direction (Y) to form a pressure control flow channel (22). The coating die and the coating device can improve the slurry coating uniformity during a coating process.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4773281A1

A secondary battery and an electronic device are disclosed. The secondary battery includes an electrode assembly and a negative tab. The electrode assembly includes a negative electrode plate. The negative electrode plate includes a negative current collector and a first negative active layer disposed on at least one surface of the negative current collector. The negative tab is integrally formed with the negative current collector and extends out of the electrode assembly along a first direction. The first negative active layer includes a first region corresponding to the negative tab in the first direction. The first region is provided with a plurality of strip-shaped grooves. In the first direction, the negative current collector includes a first edge located on the same side as the negative tab. Each of the strip-shaped grooves includes a first end located on the same side as the negative tab. A distance between the first end of at least one strip-shaped groove located in the first region and the first edge is greater than or equal to 0.

SECONDARY BATTERY AND ELECTRONIC APPARATUS

Resumen de: EP4773280A1

0001 A secondary battery and an electronic device are disclosed. The secondary battery includes an electrode assembly and a tab. The electrode assembly includes a negative electrode plate. The negative electrode plate includes a negative current collector and a negative active layer disposed on at least one surface of the negative current collector. The negative current collector includes a first edge and a second edge opposite to each other in a first direction. The tab extends out of the electrode assembly through the first edge along the first direction. The negative active layer includes a first edge region provided with a plurality of first strip-shaped grooves. The first edge region covers the first edge and extends toward the second edge. In the first direction, the first edge region includes a first end portion located at the first edge and a second end portion opposite to the first end portion. At least one of the first strip-shaped grooves extends from the first end portion to the second end portion. A width of the first edge region is greater than or equal to 1 mm.

PRECURSOR AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE AND LITHIUM-ION BATTERY

Resumen de: EP4772475A1

The present disclosure provides a precursor of a positive electrode active material. A particle of the precursor includes a core and a shell covering the core. Each of the core and the shell is made of nickel cobalt manganese oxide or nickel cobalt manganese hydroxide. The core is doped with a fluxing agent, and the fluxing agent is selected from one or more of an oxide, a carbonic acid compound, and a hydroxide of a first metal element, and the first metal element at least is one of Sr, Li, Mg, Ni, Co, and Zr. The shell is doped with a reaction inhibitor. The reaction inhibitor is selected from one or more of lithium compounds, an oxide, a carbonic acid compound, a hydroxide, and other compounds of a second metal element, and the second metal element at least is one of Ta, W, Al, Mn, Mo, and La. A fluxing agent is disposed in the core of the particle of the precursor, and the reaction inhibitor is disposed in the shell, so that subsequent crystallization of the precursor develops from inside to outside. The present disclosure further provides a positive electrode active material and a preparation method therefor, a positive electrode comprising the positive electrode active material, a lithium-ion battery, and a preparation method for the precursor.

VEHICLE BATTERY PROTECTION DEVICE, AND METHOD FOR THERMAL MANAGEMENT OF SAME

Resumen de: WO2025049546A1

A vehicle battery protection device for preserving the charge of the vehicle battery is electrically connectable between a vehicle battery and a vehicle electrical system. The device includes a solid-state switch commandable between an on state and an off state. A thermal safety algorithm executable by the device may include a switch derating process, a thermal analysis calibration, a vehicle profile function, and a data reconciliation function. The device employs hardware and software solutions to reduce the risk of thermal runaways and component failures in the device, while maximizing its useful operating envelope. The software solutions may include predicting future thermal loads for the device based on vehicle usage patterns specific to the vehicle within which the device is installed. Those predictions may be used to generate risk datasets which influence whether and to what extent thermal mitigation measures will be employed by the device at any point in time.

LITHIUM SECONDARY BATTERY

Resumen de: EP4773324A1

A lithium secondary battery includes: an electrode group including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. In the negative electrode, lithium metal is deposited during charging, and the lithium metal is dissolved in the non-aqueous electrolyte during discharging. The separator includes a sheet-shaped substrate, and a spacer disposed on a principal surface of the substrate. The spacer includes a protruding portion, an end portion of the positive electrode includes a portion A overlapping the protruding portion. An insulating layer is disposed between at least part of the portion A and the negative electrode.

CUSHIONING MEMBER, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4773267A1

A cushioning member (200), a battery cell (100), a battery (1000), and an electric device (2000). The cushioning member (200) is used inside the battery cell (100), the battery cell (100) comprising an electrode assembly (120). The cushioning member (200) has a pressure-bearing face (201) facing towards or away from the electrode assembly (120), the pressure-bearing face (201) being provided with avoidance slots (202).

ELECTROCHEMICAL DEVICE AND ELECTRICAL APPARATUS

Resumen de: EP4773370A1

0001 The present application discloses an electrochemical apparatus and an electric device, the electrochemical apparatus including a housing, an electrode assembly, and an adhesive member. The housing includes a first sidewall, and the electrode assembly is disposed within the housing and includes a first side surface adjacent to the first sidewall, the first side surface including a second region, a first region, and a third region arranged sequentially along a first direction. The adhesive member is located between the housing and the electrode assembly. The adhesive member includes a first side and a second side opposite each other, the first side including a first adhesive zone bonded to the first sidewall, the second side including a second adhesive zone bonded to the second region, a third adhesive zone bonded to the third region, and a first non-adhesive zone located between the second adhesive zone and the third adhesive zone. Along a second direction, a projection of the first adhesive zone overlaps with the first non-adhesive zone, the second direction being a direction in which the first sidewall is opposite the first side surface. The first non-adhesive zone provided in the adhesive member of the present application is not bonded to the first side surface, which helps reduce the risk of damage to the electrode assembly.

SYSTEM FOR REDUCING BATTERY CELL FAILURE PROPAGATION RISK OF A RECHARGEABLE BATTERY

Resumen de: WO2025049863A1

Aspects of the present disclosure include systems, apparatuses, or methods for a system for reducing battery cell failure propagation risk includes a rechargeable battery including a plurality of rechargeable cells connected in series, parallel, or a combination of series and parallel and a BMS coupled with the batter-. The BMS includes a processor and a memory including computer-executable instructions to receive information indicative of a status of each of the rechargeable cells: determine that a particular rechargeable cell is likely in a failure condition; identify a group of rechargeable cells that is in within one hop of tire rechargeable cell that is likely in the failure condition; couple the group of rechargeable cells to a discharging system without coupling the rechargeable cell in the failure condition to the discharging system; and discharge the group of rechargeable cells to a target SOC.

ELECTROLYTIC SOLUTION, ELECTROLYTE COMPOSITION, AND ELECTROCHEMICAL ELEMENT

Nº publicación: EP4773292A1 08/07/2026

Solicitante:

NITERRA CO LTD [JP]
Niterra Co., Ltd.

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.