Abstract: A secondary battery includes an electrode assembly including a main body and a tab extending from the main body, wherein the main body includes a negative electrode plate including a negative current collector, and a negative electrode film layer arranged on at least one surface of the negative current collector, wherein the negative electrode film layer includes a first region and a second region arranged to at least one side of the first region, in the direction that the tab extends, wherein the first region includes a first negative electrode active material and the second region includes a second negative electrode active material, and wherein the first negative electrode active material has a powder OI value denoted as OIa, and the second negative electrode active material has a powder OI value denoted as OIb, wherein the negative electrode film layer satisfies OIa<OIb.

Abstract: An embodiment of the present application provides an electrode assembly, a battery cell, a battery, and an electrode assembly manufacturing method and device, which belong to the technical field of batteries. The electrode assembly includes a positive electrode plate and a negative electrode plate, the positive electrode plate and the negative electrode plate being wound in a winding direction and forming a winding structure. The positive electrode plate comprises a plurality of first active substance layer regions and at least one first inactive substance layer region; and in an axial direction of the winding structure, the first inactive substance layer region is located between two adjacent first active substance layer regions, wherein, the first inactive substance layer region is provided with a first guide flow through hole, and the first guide flow through hole is configured to penetrate both sides in a thickness direction of the positive electrode plate.

Abstract: The present application discloses a secondary battery, a battery module, and a device using the secondary battery as a power source. The secondary battery includes: a casing; an electrode assembly disposed in the casing; a cap assembly; and a current collecting member including an adapting piece and a connecting component provided separately and connected with each other; the adapting piece connected with the electrode terminal of the cap assembly and including a guiding section; the connecting component including a current collecting section to be connected with the guiding section and a tab connecting section to be connected with the electrode assembly; and the connecting component has a rigidity less than that of the guiding section, so that deformation of the guiding section toward the electrode assembly can be reduced when a portion of the connecting component connected with the electrode assembly is bent with respect to the length direction.

Abstract: A battery cell is provided and includes a housing, at least one electrode assembly, a first electrode terminal, a second electrode terminal, and a first current collecting member. The housing includes a first wall. The at least one electrode assembly is accommodated in the housing, the electrode assembly includes a body portion, a first tab, and a second tab; the first electrode terminal and the second electrode terminal are both arranged on the first wall, and the second electrode terminal is electrically connected to the second tab; and the first current collecting member is accommodated in the housing and is configured to electrically connect the first tab and the first electrode terminal. The battery cell can improve the consistency of stress within the electrode assembly, so as to improve the stability and consistency of the charge and discharge performance of the electrode assembly.

Abstract: The present application discloses a secondary battery, a battery module, and a device using the secondary battery as a power source. The secondary battery includes: a casing; an electrode assembly disposed in the casing; a cap assembly; and a current collecting member including an adapting piece and a connecting component provided separately and connected with each other; the adapting piece connected with the electrode terminal of the cap assembly and including a guiding section; the connecting component including a current collecting section to be connected with the guiding section and a tab connecting section to be connected with the electrode assembly; and the connecting component has a rigidity less than that of the guiding section, so that deformation of the guiding section toward the electrode assembly can be reduced when a portion of the connecting component connected with the electrode assembly is bent with respect to the length direction.

Abstract: This utility model relates to an electrode assembly, a battery cell, a battery, and an electric device. An electrode assembly includes an anode electrode plate and a cathode electrode plate. At least one side of the anode current collector is coated with an anode active substance layer. At least one side of the cathode current collector is coated with a cathode active substance layer and an additional layer. In a plane perpendicular to the stacking direction of the anode electrode plate and the cathode electrode plate, a projection of the anode active substance layer covers a projection of the cathode active substance layer and partially covers a projection of the additional layer. A battery includes the battery cells. An electric device includes the battery cells or the foregoing battery. The electrode assembly, battery cell, battery, and electric device can mitigate or reduce electrode plate cracking.

Abstract: A battery cell, a battery, and an electric apparatus are described. The battery cell includes a housing and at least one electrode assembly. The housing includes a first wall and a second wall, where the first wall and the second wall enclose a first accommodation space and at least one second accommodation space. The at least one electrode assembly includes a first electrode assembly arranged in the first accommodation space; where the first wall is bent along a circumferential direction of the first electrode assembly, the second wall is connected to an end of the first wall along the circumferential direction, a closed-loop virtual curved surface on which the first wall is located defines the first accommodation space, and a closed-loop virtual curved surface on which the first wall is located and the second wall define the at least one second accommodation space.

Abstract: The present disclosure relates to an electrode assembly, a forming method, a battery cell, a battery and an electrical apparatus. The electrode assembly includes an electrode body; a winding hole arranged to extend through the electrode body in a first direction; and a supporting capsule body provided within the winding hole, configured to support the winding hole, and including a flexible wall and an accommodating cavity surrounded and formed by the flexible wall, wherein at least part of the accommodating cavity is filled with fillers for supporting the accommodating cavity. The winding hole of the electrode assembly provided according to embodiments of the present disclosure is not prone to collapse, improving an operating stability and safety performance of the electrode assembly.

Abstract: This application provides a secondary battery and an electrical device. The secondary battery includes a current collector and a negative film layer. The negative film layer includes: a first film layer, disposed on at least one surface of the current collector, where the first film layer includes a first negative active material; a second film layer, disposed on a surface of the first film layer, where the surface is away from the current collector, and the second film layer includes a second negative active material. A volume distribution diameter Dv50 of the first negative active material is greater than a volume distribution diameter Dv50 of the second negative active material, and a powder compaction density of the first negative active material is greater than the powder compaction density of the second negative active material under a same pressure.

Abstract: An electrode assembly, a battery cell, a battery, and an electrical device are provided. The electrode assembly includes a first electrode plate and a second electrode plate laminated in a first direction, with opposite polarities. The first electrode plate includes a first current collector and a first active material layer disposed on at least one side of the first current collector in the first direction. One end of the first current collector is provided with a first tab in a second direction. The first electrode plate further includes a first insulating layer disposed at an edge of at least one side of the first active material layer in a third direction. The first insulating layer and the first active material layer are disposed on the same side of the first current collector. Any two of the first direction, the second direction, and the third direction are perpendicular to each other.

Abstract: Examples of a battery and an electric device of the battery are disclosed. An example battery includes: a plurality of battery rows arranged in a first direction, in which the battery row includes a plurality of battery cells arranged in a second direction perpendicular to the first direction; and a reinforcing structure including at least one first reinforcing structure and a second reinforcing structure connected to each other, in which the at least one first reinforcing structure and the plurality of battery rows are stacked in the first direction, and the second reinforcing structure and the plurality of battery cells in one battery row are stacked in the second direction.

Abstract: A battery and an electric device are provided. The battery includes a plurality of battery cells, and the plurality of battery cells includes at least one first battery cell and at least one second battery cell. A length of the at least one first battery cell is greater than a length of the at least one second battery cell, and the at least one first battery cell is adjacent to and connected to the at least one second battery cell.

Abstract: A battery and an electric device are provided. The battery includes a battery module and a pressure applying component. The battery module includes one layer of battery row or a plurality of layers of battery rows laminate in a first direction. The battery row includes one battery cell or a plurality of battery cells arranged in a second direction, and a first surface, perpendicular to the first direction, of a housing of the battery cell is a surface having the largest area. The pressure applying component is provided on at least one side of the battery module in the first direction, the pressure applying component abuts against the first surface, and a position of the pressure applying component in the first direction is adjustable.

Abstract: Some embodiments of the present application provide an electrode plate, an electrode assembly, a battery cell, a battery, and an electrical apparatus. The electrode plate includes a current collector and an active material layer coated on the surface of the current collector. The current collector includes a coating region coated with the active material layer and a tab region not coated with the active material layer. The tab region is provided with a stress barrier structure spaced apart from the coating region. The stress barrier structure is configured to reduce the stress transmitted to the junction of the tab region and the coating region when the tab region is deformed.

Abstract: A battery may include a box; and at least two groups of battery cells accommodated in the box, where each group of battery cells may include a plurality of battery cells arranged along a first direction, the first direction being parallel to an upper cover or a bottom wall of the box, and the at least two groups of battery cells may be stacked along a second direction, the second direction being perpendicular to the first direction. The battery cell may be a polyhedral structure and include a first wall and a second wall that may be connected to each other, where the first wall may be parallel to the first direction, the second wall may be oblique to the first wall, and a cross section of the battery cell on a plane perpendicular to the first wall and the second wall may be a parallelogram.

Abstract: An electrode plate includes: a current collector having a plurality of first surfaces; and an active substance layer provided on at least one of the plurality of first surfaces and having a second surface on a side away from the current collector; where the second surface is provided with at least one concave portion that is recessed relative to the second surface, a volume sum of cavity(s) formed by the at least one concave portion is a first volume V1, a material volume of the active substance layer is a second volume V2, and the first volume V1 and the second volume V2 satisfy: V ? 1 : ( V ? 1 + V ? 2 ) = 0.1 % ? to ? 30 ? % .

Abstract: A battery cell includes: an end cover assembly, including an end cover, and an electrode terminal and a pressure relief mechanism disposed at the end cover; and an adapter, disposed at a side of the end cover facing the interior of the battery cell. The adapter includes first, second, and third connection portions that are sequentially folded along a thickness direction of the end cover. The first connection portion is configured to be connected to an electrode assembly, the third connection portion is configured to be connected to the electrode terminal, and the second connection portion is connected to the first connection portion and the third connection portion. The second connection portion is provided with a first through hole, and the first through hole is used for allowing gas inside the battery cell to pass through, so that the gas can flow to the pressure relief mechanism.

Abstract: Described are systems and methods for evolving computer-implemented narrative games based on player feedback, levering generative artificial intelligence (AI), such as Generative Pre-Trained Transformer (GPT) or other foundation models, to create new game content responsive to player input, measure player engagement metrics during gameplay, and/or modify the game based on the generated new content and/or player engagement.

Abstract: A task scheduling method and apparatus, a device, and a medium are provided. According to the task scheduling method, a target running category of an application is determined from a plurality of predefined running categories based on a running status of the application, where applications in different running categories in the plurality of predefined running categories have different importance levels. A target classification priority corresponding to the target running category is determined. A target scheduling priority of a target task in the application is determined based on at least the target classification priority. A resource of a processing system is scheduled to the target task based on the target scheduling priority, for running of the target task.

Abstract: This application provides a battery cell, a battery, and an electric device. The battery cell includes: an electrode assembly; a housing, where the housing has a first opening for accommodating the electrode assembly; an end cover configured to cover the first opening, where the end cover has a protruding structure, the protruding structure protrudes along a first direction away from the interior of the battery cell, and the first direction is a thickness direction of the end cover; and an electrode terminal, where the electrode terminal has a protruding portion protruding from the protruding structure along a second direction, and the second direction is perpendicular to the first direction. The battery cells are interconnected in the second direction through the protruding portions of the electrode terminals, which can enhance the strength of the connection between the battery cells.