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: An optical system and the adjusting device thereof. The optical system includes an optical device. The adjusting device is configured for adjusting a location of a center of the optical device. The adjusting device includes a first adjusting element which is movable along a first axis and is propped against the optical device, a second adjusting element which is movable along a second axis and is propped against the optical device, and a third adjusting element which is movable along a third axis and is propped against the optical device. The center of the optical device is spaced apart from where the first axis and the second axis meet and/or where the first axis and the third axis meet.

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: The present disclosure relates to methods, apparatuses, and computer programs for processing computed tomography images. Precise segmentation of the left atrium (LA) in computed tomography (CT) images constitutes a crucial preparatory step for catheter ablation in atrial fibrillation (AF). We aim to apply deep convolutional neural networks (DCNNs) to automate the LA detection/segmentation procedure and create a three-dimensional (3D) geometries. The deep learning provides an efficient and accurate way for automatic contouring and LA volume calculation based on the construction of the 3D LA geometry. Non-pulmonary vein (NPV) trigger has been reported as an important predictor of recurrence post atrial fibrillation (AF) ablation. Elimination of NPV triggers can reduce the post-ablation AF recurrence. The deep learning was applied in pre-ablation pulmonary vein computed tomography (PVCT) geometric slices to create a prediction model for NPV triggers in patients with paroxysmal atrial fibrillation (PAF).

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: 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 application relates to a device for preparing an electrode assembly and a preparation method of the electrode assembly. Wherein the device for preparing the electrode assembly includes: a winding assembly; a plurality of first electrode plate unwinding apparatuses, configured to provide a plurality of first electrode plates for the winding assembly; and at least one second electrode plate unwinding apparatus, configured to provide at least one second electrode plate for the winding assembly, wherein a polarity of the first electrode plate is opposite to a polarity of the second electrode plate; and wherein the winding assembly is configured to wind the plurality of first electrode plates and the at least one second electrode plate, to form an electrode assembly. The present application is used for improving winding efficiency of the electrode assembly.

Abstract: A handle assembly and a stapler including the same are provided. The handle assembly includes: a first handle, a second handle, a sliding slot disposed on the first handle, a slider slidably disposed in the sliding slot, a second indicator and a first indicator connected to a first end of the second indicator; when the first indicator is rotated in a first direction, a second end of the second indicator is driven to rotate in the first direction and the slider is pushed to move from a first section of the sliding slot to a second section of the sliding slot; when the slider is pressed against the second handle due to rotation of the first handle in a second direction, the second handle is linked with the first handle and the second end of the second indicator is pushed by the slider to rotate in the second direction.

Abstract: A handle assembly and a stapler including the same are provided. The handle assembly includes: an indicator; a first handle and a second handle; a slot and a slider, provided in the first handle, the slider can be actuated by the indicator to move from a first section to a second section of the slot; when the slider in in the first section, the second handle cannot be actuated by the first handle and is in an insurance position; when the slider is in the second section of the slider, and the second handle can be actuated by the first handle to move towards a firing position. Therefore, no matter whether the stapler is ready to be fired or not, the first handle can be pressed by the doctor. However, when the stapler is not ready to be fired, the second handle won't be actuated to fire the stapler.

Abstract: A handle assembly and a stapler including the same are provided. The handle assembly includes a first handle, a second handle, a slot provided in the second handle and a slider slidably located in the slot. When the slider is in the first section of the slot, the first handle and the second handle are not linked; when the slider is in the second section of the slot, the first handle is linked to the second handle and actuates the second handle to move from an insurance position to a firing position. Therefore, only the movement of the second handle can fire the stapler. No matter whether the stapler is ready to be fired or not, the first handle can be pressed by the doctor, while the stapler cannot be fired when the stapler is not ready to be fired.