Abstract: The disclosure provides a battery and a battery module. The battery includes a battery housing and a cap assembly; the battery housing includes a body, and the body includes a side wall extending in a first direction and an end wall connected to an end of the side wall; the end wall includes a first surface and a second surface opposite to each other in the first direction, and the first surface faces an explosion-proof sheet of the cap assembly; and the end wall is provided with a groove on the second surface, and the groove is recessed from the second surface towards the first surface.

Abstract: The present disclosure provides a current collection plate and a battery cell. the battery cell includes the current collection plate, and the current collection plate includes a welding side and a back side arranged oppositely. The welding side is configured to be welded to a battery core, the back side is provided with a welding track, and the welding track presents a smooth wavy curve.

Abstract: The present disclosure provides a cap assembly, a battery cell, and a battery. The cap assembly includes a cap. The cap includes a lid and an explosion-proof piece. The lid has a first side surface and a second side surface arranged oppositely. The explosion-proof piece is partially attached to the first side surface and is provided with an edge portion at a periphery of the explosion-proof piece. The edge portion is provided on the periphery of the lid, and a plane where a top surface of the edge portion is located does not exceed a plane where the second side surface is located.

Abstract: The present disclosure provides a current collection plate and a battery cell. The current collection plate includes: a main body; a conductive part connected to the main body of the current collection plate and including a first side and a second side opposite to the first side; and an insulating layer covering at least part of the first side and at least part of the second side.

Abstract: A cover plate assembly and a battery are provided. The cover plate assembly includes a top cover and a connection assembly including a connection sheet made of aluminum. The top cover is provided on the connection sheet. The top cover includes a core material and an outer layer located outside the core material. The core material is welded to the connection sheet by the outer layer. A material of the core material includes copper and a material of the outer layer includes nickel.

Abstract: A battery, a battery module, and a battery pack are provided in the present disclosure. The battery includes a case, a current collector plate, and multiple first welding portions. The case includes a top and a bottom, and a cavity is formed in the case. The current collector plate is arranged in the cavity. Multiple first welding portions are formed on a side, close to the bottom, of the current collector plate. The current collector plate is welded to the bottom through multiple first welding portions. Multiple first welding portions are arranged around a center of the current collector plate. A distance between each of first welding portions and the center of the current collector plate is greater than a distance between the first welding portion to an edge of the current collector plate.

Abstract: A cap assembly, a battery, and a battery pack. The cap assembly includes an explosion-proof sheet including a main body and a protrusion provided on a first surface of the main body; an orifice plate including a first portion and a second portion that are connected, at least one first pressure relief hole being disposed between the first portion and the second portion, the first portion being disposed closer to a center of the orifice plate relative to the second portion; an insulating gasket disposed between the explosion-proof sheet and the orifice plate, where the insulating gasket being configured to cover at least a portion of the first portion.

Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and a plurality of subpixels provided on the base substrate. Each subpixel includes a pixel circuit. The plurality of subpixels include first subpixels. The display substrate further includes power lines. Each power line is configured to provide a first supply voltage for the corresponding first subpixels, the power line is provided on a side of the pixel electrode of the first subpixel near the base substrate, and the power line includes a power line main body and a power line protrusion protruded from the power line main body. The power line protrusion is at least partially overlapped with the pixel electrode of the first subpixel in a direction perpendicular to the base substrate. The display substrate can effectively improve the display quality.

Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and a plurality of subpixels provided on the base substrate. Each subpixel includes a pixel circuit. The plurality of subpixels include first subpixels. The display substrate further includes power lines. Each power line is configured to provide a first supply voltage for the corresponding first subpixels, the power line is provided on a side of the pixel electrode of the first subpixel near the base substrate, and the power line includes a power line main body and a power line protrusion protruded from the power line main body. The power line protrusion is at least partially overlapped with the pixel electrode of the first subpixel in a direction perpendicular to the base substrate. The display substrate can effectively improve the display quality.

Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and a plurality of subpixels provided on the base substrate. Each subpixel includes a pixel circuit. The plurality of subpixels include first subpixels. The display substrate further includes power lines. Each power line is configured to provide a first supply voltage for the corresponding first subpixels, the power line is provided on a side of the pixel electrode of the first subpixel near the base substrate, and the power line includes a power line main body and a power line protrusion protruded from the power line main body. The power line protrusion is at least partially overlapped with the pixel electrode of the first subpixel in a direction perpendicular to the base substrate. The display substrate can effectively improve the display quality.

Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and a plurality of subpixels provided on the base substrate. Each subpixel includes a pixel circuit. The plurality of subpixels include first subpixels. The display substrate further includes power lines. Each power line is configured to provide a first supply voltage for the corresponding first subpixels, the power line is provided on a side of the pixel electrode of the first subpixel near the base substrate, and the power line includes a power line main body and a power line protrusion protruded from the power line main body. The power line protrusion is at least partially overlapped with the pixel electrode of the first subpixel in a direction perpendicular to the base substrate. The display substrate can effectively improve the display quality.

Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and a plurality of subpixels provided on the base substrate. Each subpixel includes a pixel circuit. The plurality of subpixels include first subpixels. The display substrate further includes power lines. Each power line is configured to provide a first supply voltage for the corresponding first subpixels, the power line is provided on a side of the pixel electrode of the first subpixel near the base substrate, and the power line includes a power line main body and a power line protrusion protruded from the power line main body. The power line protrusion is at least partially overlapped with the pixel electrode of the first subpixel in a direction perpendicular to the base substrate. The display substrate can effectively improve the display quality.

Abstract: A functionally gradient material for guided periodontal hard and soft tissue regeneration includes a 3D printed scaffold layer and an electrospun fibrous membrane layer. The content of hydroxyapatite in the 3D printed scaffold layer is higher than the content of hydroxyapatite in the electrospun fibrous membrane layer. The pore size of the 3D printed scaffold layer is larger than the pore size of the electrospun fibrous membrane layer. The pore size of the 3D printed scaffold layer is 100-1000 ?m, and the fiber diameter of the electrospun fibrous membrane layer is 300-5000 nm. The electrospun fibrous membrane layer is in a random distribution or an oriented arrangement or has a mesh structure. The thickness of the electrospun fibrous membrane layer is 0.08-1 mm.

Abstract: A functionally gradient material for guided periodontal hard and soft tissue regeneration includes a 3D printed scaffold layer and an electrospun fibrous membrane layer. The content of hydroxyapatite in the 3D printed scaffold layer is higher than the content of hydroxyapatite in the electrospun fibrous membrane layer. The pore size of the 3D printed scaffold layer is larger than the pore size of the electrospun fibrous membrane layer. The pore size of the 3D printed scaffold layer is 100-1000 ?m, and the fiber diameter of the electrospun fibrous membrane layer is 300-5000 nm. The electrospun fibrous membrane layer is in a random distribution or an oriented arrangement or has a mesh structure. The thickness of the electrospun fibrous membrane layer is 0.08-1 mm.

Abstract: An embodiment provides a magnetic flux leakage compensation structure, which includes an upper clamping piece and a lower clamping piece which are electrically disconnected from side-column tension plates and electrically connected with core-column tension plates, respectively, and which are electrically connected with each other through bypass cables. According to the magnetic flux leakage compensation structure provided by the embodiment, by the bypass cables connecting the upper and lower clamping pieces, currents flowing through the side-column tension plates and cores and induced voltages caused by the magnetic flux leakage in an electric circuit may be effectively avoided.

Abstract: An embodiment provides a magnetic flux leakage compensation structure, which includes an upper clamping piece and a lower clamping piece which are electrically disconnected from side-column tension plates and electrically connected with core-column tension plates, respectively, and which are electrically connected with each other through bypass cables. According to the magnetic flux leakage compensation structure provided by the embodiment, by the bypass cables connecting the upper and lower clamping pieces, currents flowing through the side-column tension plates and cores and induced voltages caused by the magnetic flux leakage in an electric circuit may be effectively avoided.