Abstract: A tab welded structure includes a conductive member and a tab formed by stacking a plurality of layers of pieces in a first direction. The conductive member is welded to the tab to form a fused area. The fused area includes a first fused portion and a second fused portion. The first fused portion extends from the tab into the conductive member in the first direction. The second fused portion is demarcated from the first fused portion, the second fused portion is located at a side portion of the first fused portion, and the second fused portion is configured to be connected to the first fused portion and the tab.

Abstract: A robot based on origami principles, includes: linkage components, central panels, and a plurality of sector-shaped panels, wherein: two ends of the linkage components are connected to a same number of the sector-shaped panels, with every two adjacent sector-shaped panels connected by a respective one of connecting elements; the central panels are located in a middle of the linkage components, and the central panels are configured for placement of a control assembly, the control assembly comprising a folding/unfolding motor and a motion control system; the folding/unfolding motor is configured to drive the connecting elements to control the robot to switch to any one of a multirotor configuration, a wheel configuration, or a waterborne motion configuration.

Abstract: A battery cell includes an electrode assembly and an electrode lead-out member. The electrode assembly includes a body and a tab. The electrode lead-out member is configured to lead out electric energy of the electrode assembly, and the electrode lead-out member includes a first portion. The tab includes a first connecting segment and a second connecting segment that are connected in sequence, the first connecting segment is connected to the body, the second connecting segment is bent with respect to the first connecting segment, and at least one of the first connecting segment and the second connecting segment is connected to the first portion.

Abstract: An electrode assembly comprises a plurality of structural units laminated in a first direction, the structural unit comprising a first plate and a second plate. The first electrode plate comprises a bending section and a plurality of straight sections, and two adjacent straight sections are spaced apart in a first direction and connected to one bent section. The second plate has a polarity opposite to that of the first plate, and alternates with the straight sections in the first direction.

Abstract: Provided are a cleaning device, a production system, and a cleaning method. The cleaning device comprises a first fixing member, a second fixing member, and a laser assembly. The first fixing member is configured to fix a housing; the second fixing member is arranged opposite to the first fixing member and is configured to fix an end cap; and the laser assembly is arranged on a side of the first fixing member and a side of the second fixing member, and is configured to clean the housing and the end cap when the end cap is partially closed into the housing.

Abstract: A pressing apparatus, electrode plate processing equipment, and battery processing equipment are disclosed. The battery processing equipment includes the electrode plate processing equipment and shaping equipment. The electrode plate processing equipment includes the pressing apparatus. The pressing apparatus includes a first pressing piece with a first surface and a second pressing piece with a second surface. The first surface and the second surface are configured to coordinate to press a target piece. The first surface and/or the second surface are provided with a clearance groove. The clearance groove provides a clearance for a part of the separator, so that the separator is still sticky during shaping, thereby alleviating the problem of inferior adhesion in the electrode assembly.

Abstract: Provided are a winding shaft, a cell manufacturing apparatus, and a cell manufacturing method. The winding shaft is used for winding plates and includes: a winding shaft body including a first winding surface; an adjustment member configured to be mounted to the winding shaft body and movable simultaneously in an axial direction of the winding shaft and in a radial direction of the winding shaft, where the adjustment member includes a second winding surface, and the first winding surface and the second winding surface are configured to wind the plates jointly; and an actuator configured to drive the adjustment member to move to change a relative position of the second winding surface with respect to the first winding surface, so as to change a winding circumference of the winding shaft. The winding shaft of the present application can reduce the possibility of or the amount of misalignment between the tabs.

Abstract: An electrode assembly, a battery cell, a battery, and an electrical apparatus are disclosed. The electrode assembly includes a first electrode plate, the electrode plate includes a current collector and active material layers arranged on the current collector, the active material layer is provided with a plurality of material removal regions at intervals in an extension direction (L) of the first electrode plate, and the material removal region extends in a width direction (Y) of the first electrode plate; the active material layer is provided with a marking portion, a width of the marking portion in the extension direction (L) of the first electrode plate is greater than or equal to a width of the material removal region, and the marking portion spans across the material removal region.

Abstract: Some embodiments of this application provide an electrode assembly, a battery cell, a battery, and an electrical device. The electrode assembly includes at least one first electrode plate, where the first electrode plate is bent and includes: a current collector; and an active material layer, disposed on the current collector. The active material layer includes a material-removed region in at least a part of bends of the first electrode plate. The material-removed region extends along a width direction of the first electrode plate. A depth of the material-removed region does not exceed a thickness of the active material layer at which the material-removed region is located.

Abstract: A stacked-type electrode assembly, a battery cell, a battery, and an electrical device are disclosed. The stacked-type electrode assembly includes a first electrode plate and a second electrode plate of opposite polarities. The first electrode plate and the second electrode plate are stacked along a first direction. The first electrode plate includes a first coated region and a first blank region arranged along a second direction. The first blank region includes a first connecting portion and a first tab portion. The first connecting portion connects the first coated region and the first tab portion. A dimension of the first connecting portion is larger than a dimension of the first tab portion along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

Abstract: A battery cell includes: a first electrode assembly, including a first body and a first tab; a second electrode assembly, including a second body and a second tab, where the first body and the second body are arranged in a first direction; and a first connector, where the first connector is located on one side of the first electrode assembly and the second electrode assembly in a second direction, the second direction is perpendicular to the first direction, and a welding portion of the first tab and a welding portion of the second tab are both connected to the first connector; and in the first direction, a projection of the welding portion of the first tab and a projection of the welding portion of the second tab do not overlap at least in part.

Abstract: A battery cell includes a shell and an end cap assembly, the shell being provided with an opening, and the end cap assembly including an end cap, an insulating member and an inner terminal, wherein the end cap is arranged at the opening, and a surface of the end cap close to the shell is provided with an annular protrusion extending in a circumferential direction of the end cap; the annular protrusion shrinks inwards relative to an edge of the end cap to form a flange between an outer side of the annular protrusion and the edge of the end cap; the flange is arranged on a shell wall of the shell, and the annular protrusion extends into the shell; and the insulating member is arranged in a groove enclosed by the annular protrusion, and the inner terminal is arranged on the insulating member.

Abstract: Provided are a winding shaft, a cell manufacturing apparatus, and a cell manufacturing method. The winding shaft is used for winding plates and includes: a winding shaft body including a first winding surface; an adjustment member configured to be mounted to the winding shaft body and movable simultaneously in an axial direction of the winding shaft and in a radial direction of the winding shaft, where the adjustment member includes a second winding surface, and the first winding surface and the second winding surface are configured to wind the plates jointly; and an actuator configured to drive the adjustment member to move to change a relative position of the second winding surface with respect to the first winding surface, so as to change a winding circumference of the winding shaft. The winding shaft of the present application can reduce the possibility of or the amount of misalignment between the tabs.

Abstract: The present disclosure provides a circular stapler including an instrument body, a handle assembly and a staple pushing rod; wherein an indicator and a strike part are disposed in the instrument body, and the indicator is rotatably connected to the instrument body; when the stapler is in an initial state, the indicator is in a first position area and pressed against the strike part; when the stapler is in a firing state, the indicator is moved to a second position area and separated from the strike part; when the stapler being fired, the indicator returns to the first position area from the second position area, strikes the strike part and emits a strike sound. The strike sound prompts an operator that firing has been successfully completed, so that the operator can know the firing state of the stapler in time and user experience of the operator can be improved.

Abstract: Provided are a winding shaft, a cell manufacturing apparatus, and a cell manufacturing method. The winding shaft is used for winding plates and includes: a winding shaft body including a first winding surface; an adjustment member configured to be mounted to the winding shaft body and movable simultaneously in an axial direction of the winding shaft and in a radial direction of the winding shaft, where the adjustment member includes a second winding surface, and the first winding surface and the second winding surface are configured to wind the plates jointly; and an actuator configured to drive the adjustment member to move to change a relative position of the second winding surface with respect to the first winding surface, so as to change a winding circumference of the winding shaft. The winding shaft of the present application can reduce the possibility of or the amount of misalignment between the tabs.

Abstract: A tab welding method includes performing a first welding on a plurality of stacked layers of positive tabs and negative tabs using a toothed welding head, to form a tab body having a first weld spot region, in such a manner that a solid-phase connection is performed on the plurality of stacked layers of positive tabs and negative tabs; and performing a second welding on the tab body using a toothless welding head, to form a second weld spot region, in such a manner that after the first welding, a formed uneven region is shaped and flattened.

Abstract: An electrode assembly may include positive and negative electrode sheets, the positive and negative electrode sheets including positive and negative electrode current collectors and positive and negative electrode active material layers. The negative electrode sheet may be continuously bent and include a plurality of laminated segments and a plurality of bent segments for connecting the laminated segments; a plurality of the positive electrode sheets may be alternately laminated with the plurality of laminated segments in a first direction. An outermost positive electrode sheet may be a unilateral electrode having the positive electrode active material layer coated on an inner side rather than outer side of the positive electrode current collector thereof. The bent segment may be connected to an end of the laminated segment in a second direction; and the unilateral electrode may not extend beyond the adjacent bent segment.

Abstract: A knob assembly and a circular stapler are provided. The knob assembly includes a knob driver, a knob body, a first cooperating component and a second cooperating component. In a blocking state, the first cooperating component is linked with the second cooperating component; while in an unblocking state, the first cooperating component is not fixedly linked with the second cooperating component. One of the first cooperating component and the second cooperating component is provided at the knob driver and the other one is provided at the knob body. When the knob driver is rotated, if a rotating resistance to the knob body reaches a preset resistance value, the knob assembly cannot transmit larger torque, therefore the knob assembly is in a failure mode, the position of the anvil assembly relative to the cartridge remains unchanged, and the tissues will not be excessively compressed.

Abstract: A battery cell includes an electrode assembly including a main body portion and a tab. The tab is connected with a side portion of the main body portion in a first direction. The battery cell further includes a protective frame, which is of an integrated structure and includes three segments of protective plates respectively used for protecting three side faces of the main body portion. The three segments of protective plates comprise a first plate, a second plate, and a third plate. The third plate is located between the first plate and the second plate, two ends of the third plate are respectively connected with a first end of the first plate and a first end of the second plate, and at least one of the first plate, the second plate, and the third plate is provided with an opening. The tab is led out from the opening.

Abstract: A tab welded structure includes a conductive member and a tab formed by stacking a plurality of layers of pieces in a first direction. The conductive member is welded to the tab to form a fused area. The fused area includes a first fused portion and a second fused portion. The first fused portion extends from the tab into the conductive member in the first direction. The second fused portion is demarcated from the first fused portion, the second fused portion is located at a side portion of the first fused portion, and the second fused portion is configured to be connected to the first fused portion and the tab.