A mower is provided and includes: a housing; a movable upper cover, disposed on the housing; and a cutting assembly, disposed on the housing. The cutting assembly includes a blade carrier assembly, and the blade carrier assembly includes a blade carrier and a blade. The blade carrier includes a disc body and a blade receiving groove recessed inwardly from an edge of the disc body along an axial direction of the disc body. The blade is mounted in the blade receiving groove and arranged to be that the blade is not protruded out of the blade receiving groove in the axial direction of the disc body.

A mower is provided and includes: a housing; a movable upper cover, disposed on the housing; and a cutting assembly, disposed on the housing. The cutting assembly includes a blade carrier assembly, and the blade carrier assembly includes a blade carrier and a blade. The blade carrier includes a disc body and a blade receiving groove recessed inwardly from an edge of the disc body along an axial direction of the disc body. The blade is mounted in the blade receiving groove and arranged to be that the blade is not protruded out of the blade receiving groove in the axial direction of the disc body.

The present invention discloses a method comprising: A. acquiring the current I0 and I, and setting It1, It2, IR, Vmin, and Vmax. B. acquiring the speed V, and setting the speed VL and VH; C. a mowing motor runs in a low-speed mode, and a self-propelled motor runs at the speed VH; D. when encountering grassy areas, if I0<I<It1, keeping unchanged; if I≥It1 and lasting for T1, skipping to E; if I=IR, skipping to G; E. the mowing motor switches to the high-speed mode; F. the mowing motor switches to the low-speed mode, V is switched to VH; G the mowing motor switches to the high-speed mode, V is adjusted to VL; H. the mowing motor stops, the self-propelled motors stop, then retreat and work along the original path, after attempting for M times, if the self-propelled motors stop again, bypassing and skipping to C to continue working.

The present invention discloses a method comprising: A. acquiring the current I0 and I, and setting It1, It2, IR, Vmin, and Vmax. B. acquiring the speed V, and setting the speed VL and VH; C. a mowing motor runs in a low-speed mode, and a self-propelled motor runs at the speed VH; D. when encountering grassy areas, if I0<I<It1, keeping unchanged; if I≥It1 and lasting for T1, skipping to E; if I=IR, skipping to G; E. the mowing motor switches to the high-speed mode; F. the mowing motor switches to the low-speed mode, V is switched to VH; G the mowing motor switches to the high-speed mode, V is adjusted to VL; H. the mowing motor stops, the self-propelled motors stop, then retreat and work along the original path, after attempting for M times, if the self-propelled motors stop again, bypassing and skipping to C to continue working.

The present invention relates to a hybrid power system for a robot or a robotic lawn mower. It comprises at least one generator for generating an electric current; at least one control board being provided to receive the electric current from the generator; and at least one rechargeable battery being connected to and charged by the electric current from the control board, and being charged by the electric current from the generator as well. The generator can he an AC generator or a DC generator, and there may be two generators, and two operation control boards. There are two types of end units, such as a cutting assembly and a moving assembly. At least one of the control boards provides a driving power for driving one of the end units of the robot or the robotic lawn mower, which may be operative under AC or DC. The cutting assembly may include a set of cutting tools and the moving assembly may have a set of moving wheels, which may move in any directions under the control of the control boards.

The present invention relates to a hybrid power system for a robot or a robotic lawn mower. It comprises at least one generator for generating an electric current; at least one control board being provided to receive the electric current from the generator; and at least one rechargeable battery being connected to and charged by the electric current from the control board, and being charged by the electric current from the generator as well. The generator can he an AC generator or a DC generator, and there may be two generators, and two operation control boards. There are two types of end units, such as a cutting assembly and a moving assembly. At least one of the control boards provides a driving power for driving one of the end units of the robot or the robotic lawn mower, which may be operative under AC or DC. The cutting assembly may include a set of cutting tools and the moving assembly may have a set of moving wheels, which may move in any directions under the control of the control boards.

A method of defining an end travel limit of an electric actuator includes sensing an electric current of the electric actuator while moving the electric actuator from a first position to a second position. A maximum travel current of the electric current sensed during movement of the electric actuator between the first position to the second position is increased by a factor to define a maximum calibration current. The electric current is then sensed while moving from the second position toward an end travel position of the electric actuator. Movement of the electric actuator is stopped at a fault position when the electric current equals the maximum calibration current. The end travel limit of the electric actuator is then defined as a function of the fault position.

A method of defining an end travel limit of an electric actuator includes sensing an electric current of the electric actuator while moving the electric actuator from a first position to a second position. A maximum travel current of the electric current sensed during movement of the electric actuator between the first position to the second position is increased by a factor to define a maximum calibration current. The electric current is then sensed while moving from the second position toward an end travel position of the electric actuator. Movement of the electric actuator is stopped at a fault position when the electric current equals the maximum calibration current. The end travel limit of the electric actuator is then defined as a function of the fault position.

Provided is electric power equipment that allows a battery to be installed and removed with ease. The electric power equipment (1) includes a main body (2) defining a battery receiving recess (40) having an open upper end, and a battery (20) configured to be received in the battery receiving recess, wherein an upper part of a front end part of the battery is provided with a projection (108) projecting in a forward direction, and a rear end part of the battery is provided with a grip, and wherein an upper edge of the front end part of the battery receiving recess is provided with a supporting surface (36) configured to support a lower surface of the projection at least when the battery is being removed from the battery receiving recess.

Provided is electric power equipment that allows a battery to be installed and removed with ease. The electric power equipment (1) includes a main body (2) defining a battery receiving recess (40) having an open upper end, and a battery (20) configured to be received in the battery receiving recess, wherein an upper part of a front end part of the battery is provided with a projection (108) projecting in a forward direction, and a rear end part of the battery is provided with a grip, and wherein an upper edge of the front end part of the battery receiving recess is provided with a supporting surface (36) configured to support a lower surface of the projection at least when the battery is being removed from the battery receiving recess.