Abstract: Provided are an electrode assembly, a battery cell, a battery, and an electrical device. The electrode assembly includes first electrode plates and a second electrode plate that are of opposite polarities. The second electrode plate and two first electrode plates are stacked and wound to form the electrode assembly. The second electrode plate is located between the two first electrode plates. Each of the first electrode plates includes a first composite current collector and a first active material layer. The first active material layer is disposed on a surface that is of the first composite current collector and that is oriented back from the second electrode plate. The first composite current collector is configured to dielectrically isolate the first active material layer from the second electrode plate and allow passage of ions transmitted between the first active material layer and the second electrode plate.

Abstract: A cleaning robot (and a control method thereof) including a body, a mover, to drive the cleaning robot to move on a ground and perform cleaning work, a detector, configured to detect a ground feature in front of the cleaning robot, a positioner, configured to obtain position information of the cleaning robot, and a controller, electrically connected to the detector and the positioner. The controller stores or obtains a map of a working region of the cleaning robot and can determine a position of the cleaning robot in the map according to the position information of the cleaning robot. Further, the controller recognizes the ground feature according to a detection result of the detector and controls, according to the position of the cleaning robot in the map, the cleaning robot to perform a corresponding action.

Abstract: A robot cleaning system, including: a cleaning robot connectable to a mopping module of the cleaning robot, and a base station provided for the cleaning robot to dock, the cleaning robot includes: a main body; a mobile module; and a connection assembly, configured to detachably dispose the mopping module on the body of the robot; the base station includes: a storage module, configured to store at least one mopping module; an operating position, for the cleaning robot to dock to replace the mopping module; and a transfer module, configured to transfer the mopping module between the storage module and the operating position; and the robot cleaning system further includes a control unit. Beneficial effects of the present disclosure are: the cleaning robot is more intelligent, and the corresponding base station is compact in structure and small in occupied area.

Abstract: The present invention discloses a cleaning robot, a control method thereof, and a ground treatment system, where the ground treatment system includes the cleaning robot and a base station. The cleaning robot includes a cleaning device, configured to be mounted on the body, where the cleaning device includes a mopping module; a control device, configured to control the walking device to drive the cleaning robot to move; and a power device, configured to supply power to the walking device. The cleaning robot further includes a lifting device, and the control device can control the lifting mechanism to lift the mopping module from a first position relative to a working surface to a second position; and the control device controls, according to a detection result of a detection device, the cleaning robot to return to the base station and replace a mop in the base station.

Abstract: The disclosure relates to a cleaning robot, and a cleaning method. The cleaning robot includes a body; a moving mechanism, configured to support the body and drive the cleaning robot to move; a power module, configured to provide a driving force for moving and working; a mopping module, configured to be mounted on the body and perform predetermined mopping work, where a wiping member is capable of being mounted on the mopping module; a control module, configured to be electrically connected to the power module and control the power module, to implement automatic moving and automatic working of the cleaning robot; and a detection module configured to detect a region type.

Abstract: The disclosure relates to a cleaning robot and a control method. The cleaning robot may include: a body; a moving mechanism; a power module; a mopping module; and a control module; and further includes a liquid supply device, where the control module can control, based on a current mopping condition, the liquid supply device to convey a liquid to the mopping module. The beneficial effects of the present disclosure are that the cleaning robot can complete mopping work more efficiently, to reduce burden of a user and improve the degree of automation and the user experience of the cleaning robot. The cleaning robot can intelligently and autonomously control, based on the current mopping condition, the liquid supply device to convey a liquid to a mop, thereby prolonging the service life of a ground material such as a floor in home of the user.

Abstract: A cleaning robot, including: a housing; a moving module, and a control module, for controlling the moving module to drive the cleaning robot to move. When the cleaning robot moves on a working surface, a wiping unit is capable of directly or indirectly contacting the working surface to wipe the same. The cleaning robot includes a work execution state and a maintenance state. While the cleaning robot is switching from the work execution state to the maintenance state, the control module controls the cleaning robot to move from a work execution position corresponding to the work execution state to a maintenance position corresponding to the maintenance state. During at least a part of the process of the cleaning robot moving from the work execution position to the maintenance position, where the at least a part of the wiping unit is in a state of not contacting the working surface.

Abstract: The present invention discloses a speed changing tool, comprising: a housing; a motor, disposed in the housing and outputting rotary power; a trigger switch, used for starting and stopping the motor; an output shaft; a gear transmission, which is disposed between the motor and the output shaft to transmit rotation of the motor to the output shaft, and comprises at least one group of gear system, a gear ring meshed with the gear system and a moving member, wherein the moving member can be moved between a first position and a second position and when in the first position and the second position, the moving member has different states relative to the housing, such that the gear transmission outputs a rotary speed of the motor with different speed reduction ratios; the variable speed tool further comprises a drive mechanism for driving the moving member to move between two positions, when a load of the output shaft reaches or exceeds a preset value, the drive mechanism can drive the moving member to move to the

Abstract: The present invention provides a handheld power tool and an operation method thereof. The handheld power tool comprises a housing, a handle, a switch, a motor, an output shaft and a working component; the working component comprises at least two working chucks; the at least two working chucks respectively comprise a working shaft, the handheld power tool further comprises a control mechanism locking the working component relative to the position of the housing, the control mechanism comprises a control part adjacent to the switch and movably disposed relative to the housing, and the control part operably removes the position locking of the working component and controls the output shaft to be dis-matched and disconnected with one of the working shafts; and the position conversion of the working chucks can be finished by means of other body parts of an operator through one hand, and the operation is convenient and reliable.

Abstract: The invention relates to a chuck having a sleeve, a chuck body, a plurality of chuck jaws, an adjusting mechanism configured to adjust relative movement between the chuck jaws and the chuck body, at least one locating member and a pushing mechanism. The locating member is disposed on the chuck body between the adjacent chuck jaws. When the adjusting mechanism drives the chuck jaws to approach to each other relative to the longitudinal axis, the pushing mechanism pushes the locating member to move towards the longitudinal axis. When the adjusting mechanism drives the chuck jaws to move away from each other relative to the longitudinal axis, the pushing mechanism pushes the locating member to move away from the longitudinal axis. Therefore, the operation is more convenient and safer; the aligning effect is precise and reliable, and the pre-tightening force is stable.

Abstract: A power tool comprises a housing (1), a motor (2) provided inside the housing and for outputting rotary power, and an output shaft (4) driven by the motor to rotate. The output shaft has an output end connected to a drill bit (9) and a second end provided on the other end of the output shaft; in a non-working state, the output shaft can axially move relative to the housing along the output shaft; and in a working state, the output shaft is limited in moving in a first axial direction, the first axial direction being an axial direction from the output end to the second end. The drill bit of the power tool can extend in different length according to different positions of the output shaft, so that a working mode is rapidly switched in different working conditions, especially in a small space.

Abstract: The present invention provides a handheld power tool and an operation method thereof. The handheld power tool comprises a housing, a handle, a switch, a motor, an output shaft and a working component; the working component comprises at least two working chucks; the at least two working chucks respectively comprise a working shaft, the handheld power tool further comprises a control mechanism locking the working component relative to the position of the housing, the control mechanism comprises a control part adjacent to the switch and movably disposed relative to the housing, and the control part operably removes the position locking of the working component and controls the output shaft to be dis-matched and disconnected with one of the working shafts; and the position conversion of the working chucks can be finished by means of other body parts of an operator through one hand, and the operation is convenient and reliable.

Abstract: The invention relates to a chuck having a sleeve, a chuck body, a plurality of chuck jaws, an adjusting mechanism configured to adjust relative movement between the chuck jaws and the chuck body, at least one locating member and a pushing mechanism. The locating member is disposed on the chuck body between the adjacent chuck jaws. When the adjusting mechanism drives the chuck jaws to approach to each other relative to the longitudinal axis, the pushing mechanism pushes the locating member to move towards the longitudinal axis. When the adjusting mechanism drives the chuck jaws to move away from each other relative to the longitudinal axis, the pushing mechanism pushes the locating member to move away from the longitudinal axis. Therefore, the operation is more convenient and safer; the aligning effect is precise and reliable, and the pre-tightening force is stable.

Abstract: A power tool, comprising: a housing; a motor being disposed in the housing for outputting rotary power; an output shaft having an accommodating hole in the axial direction for holding a tool bit; a transmission mechanism, being disposed between the motor and the output shaft for transmitting rotary power from the motor to the output shaft; a tool bit supporting being disposed in the housing and including several chambers disposed in parallel for holding the tool bit; a connecting member being disposed in the housing and capable of moving axially between a working position where the connecting member passes through one of the chambers and to accommodate the tool bit in the chamber connect the output shaft, and a release position where the connecting member exits and separates from one of the several chambers; and an operating member is arranged on the housing for controlling the axial movement of the connecting member; the power tool further includes an automatic shifting means for adjusting the position of th

Abstract: The present invention discloses a speed changing tool, comprising: a housing; a motor, disposed in the housing and outputting rotary power; a trigger switch, used for starting and stopping the motor; an output shaft; a gear transmission, which is disposed between the motor and the output shaft to transmit rotation of the motor to the output shaft, and comprises at least one group of gear system, a gear ring meshed with the gear system and a moving member, wherein the moving member can be moved between a first position and a second position and when in the first position and the second position, the moving member has different states relative to the housing, such that the gear transmission outputs a rotary speed of the motor with different speed reduction ratios; the variable speed tool further comprises a drive mechanism for driving the moving member to move between two positions, when a load of the output shaft reaches or exceeds a preset value, the drive mechanism can drive the moving member to move to the

Abstract: This disclosure relates to a leaf cleaning device including: a housing; an air inlet configured to suck leaves into the housing; an air outlet configured to discharge leaves from the housing, the air outlet connected to a leaf collection apparatus; a motor located inside the housing; and a leaf pulverizing apparatus driven by the motor and configured to pulverize the leaves, wherein an area of the air inlet is greater than 260 square centimeters.

Abstract: A power tool, comprising: a housing; a motor being disposed in the housing for outputting rotary power; an output shaft having an accommodating hole in the axial direction for holding a tool bit; a transmission mechanism, being disposed between the motor and the output shaft for transmitting rotary power from the motor to the output shaft; a tool bit supporting being disposed in the housing and including several chambers disposed in parallel for holding the tool bit; a connecting member being disposed in the housing and capable of moving axially between a working position where the connecting member passes through one of the chambers and to accommodate the tool bit in the chamber connect the output shaft, and a release position where the connecting member exits and separates from one of the several chambers; and an operating member is arranged on the housing for controlling the axial movement of the connecting member; the power tool further includes an automatic shifting means for adjusting the position of th

Abstract: A power tool, comprising: a housing; a motor being disposed in the housing for outputting rotary power; an output shaft having an accommodating hole in the axial direction for holding a tool bit; a transmission mechanism, being disposed between the motor and the output shaft for transmitting rotary power from the motor to the output shaft; a tool bit supporting being disposed in the housing and including several chambers disposed in parallel for holding the tool bit; a connecting member being disposed in the housing and capable of moving axially between a working position where the connecting member passes through one of the chambers and to accommodate the tool bit in the chamber connect the output shaft, and a release position where the connecting member exits and separates from one of the several chambers; and an operating member is arranged on the housing for controlling the axial movement of the connecting member; the power tool further includes an automatic shifting means for adjusting the position of th

Abstract: A power tool comprises a housing (1), a motor (2) provided inside the housing and for outputting rotary power, and an output shaft (4) driven by the motor to rotate. The output shaft has an output end connected to a drill bit (9) and a second end provided on the other end of the output shaft; in a non-working state, the output shaft can axially move relative to the housing along the output shaft; and in a working state, the output shaft is limited in moving in a first axial direction, the first axial direction being an axial direction from the output end to the second end. The drill bit of the power tool can extend in different length according to different positions of the output shaft, so that a working mode is rapidly switched in different working conditions, especially in a small space.

Abstract: A power tool, comprising: a housing; a motor being disposed in the housing for outputting rotary power; an output shaft having an accommodating hole in the axial direction for holding a tool bit; a transmission mechanism, being disposed between the motor and the output shaft for transmitting rotary power from the motor to the output shaft; a tool bit supporting being disposed in the housing and including several chambers disposed in parallel for holding the tool bit; a connecting member being disposed in the housing and capable of moving axially between a working position where the connecting member passes through one of the chambers and to accommodate the tool bit in the chamber connect the output shaft, and a release position where the connecting member exits and separates from one of the several chambers; and an operating member is arranged on the housing for controlling the axial movement of the connecting member; the power tool further includes an automatic shifting means for adjusting the position of th