A power unit is configured to be connected to a garden or outdoor power execution device and includes a housing, a motor, and a control assembly. The housing is formed with an accommodation space. The motor is at least partially disposed in the accommodation space. The control assembly is used for controlling the motor. Maximum output power P of the motor is greater than or equal to 1500 W and less than or equal to 5500 W, a mass M1 of the power unit is greater than or equal to 8 kg and less than or equal to 14.5 kg, and a ratio of the maximum output power P to the mass M1 is higher than or equal to 103.5 W/kg and lower than or equal to 687.5 W/kg.

A first connector, a second connector and an electrical connector assembly having the first connector and the second connector are provided. The first connector includes an insulating housing and a locking plate embedded in the insulating housing, and a plurality of first power terminals, a plurality of first signal terminals and a plurality of first braking terminals mounted in the insulating housing; the locking plate is provided with a locking mechanism protruding upwardly. The second connector includes a terminal block, a cover body covering the terminal block, a locking slidable cover slidably mounted on the cover body and a plurality of second power terminals, a plurality of second signal terminals and a plurality of second braking terminals mounted in the terminal block. The locking slidable cover is capable of sliding forwardly and rearwardly relative to the cover body, and is capable of being locked together with the locking mechanism. It is adapted to a servo motor, saves space and is easy to assemble.

Drive units for electric vehicles are provided. One example provides a drive unit for an electric vehicle including a first housing section forming a first compartment to house an electrical inverter and a second housing section forming a second compartment to house an electric motor. The drive unit housing further includes an inlet port to receive a fluid and a shared wall separating the first compartment and the second compartment. The shared wall defines fluid pathways in fluid communication with the inlet port to circulate the fluid to cool the electrical inverter. The drive unit also includes an outlet port in fluid communication with the fluid pathways to discharge the fluid.

An electric lawnmower control system can include a battery, an electric motor configured to rotatably drive a blade, a fan rotatably driven by the electric motor, a printed circuit board, a motor controller, and a housing. The printed circuit board can be fastened to the battery and include a heat sink that is located adjacent to the fan. The motor controller can be mounted on the circuit board, in electrical communication with the battery and the electric motor, thermally coupled to the heat sink, and configured selectively drive the electric motor with electric power supplied by the battery. The housing can include a first side, a second side, and a ventilation passage extending from the first side to the second side. The ventilation passage can be in fluid communication with the fan, and at least a portion of the heat sink is exposed to air flowing through the ventilation passage.

A motor for driving lenses is provided. The motor includes a case, a yoke fixed in the case, a magnet fixed in the yoke, a carrier equipped with lenses and installed in the magnet such that the carrier moves up and down within the magnet, a coil coupled with the carrier, in which the coil cooperates with the magnet to move up and down the carrier, a spring unit including first and second springs having arc shapes and being separated from each other while forming a ring shape as a whole, a spacer supporting the outer peripheral surface of the spring unit, and a terminal provided on the spacer.

A rotary actuator is used in a shift-by-wire system for a vehicle. The actuator includes a motor, a controller, an upper case, a lower case, a case fastening member, and a board fixing member. The controller controls the motor. The upper case is made from resin and houses the controller. The lower case houses the motor together with the upper case. The case fastening member is made from metal and fastens the upper case and the lower case to each other. The board fixing member fixes a board of the controller to the case fastening member.

Systems and methods for producing fluids from a subterranean well include an electrical submersible pump assembly with a motor-pump unit. The motor-pump unit has a motor housing and a stator is located within the motor housing. The stator has a stator body with an interior cavity. A rotor assembly is located within the interior cavity of the stator. The rotor assembly includes a rotor shaft extending along the central axis of the stator, a rotor member, and an intermediate rotor bearing assembly. The rotor member and the intermediate rotor bearing assembly circumscribe the rotor shaft. An impeller is mounted on the rotor shaft and located within the interior cavity of the stator. A liner with a polygonal cross section is located along an interior surface of the interior cavity. The liner is secured to the motor housing and seals the stator body from a wellbore fluid.

An electronic board includes a board, and includes on the board: a power input part inputting power output from an in-vehicle power supply; a drive circuit driving a drive source; a controller controlling driving of the drive source performed by the drive circuit; and a drive command signal input part inputting a drive command signal transmitted from outside. The electronic board further includes on the board: a drive command signal detection circuit capable of detecting the drive command signal, and controlling whether to supply the power input to the power input part to the controller based on whether the drive command signal is detected.

The present disclosure includes drive modules for motor-drive assemblies of an industrial automation system. The drive modules may include a housing having a cavity and may also include power circuitry and control circuitry. The power circuitry may convert input DC power to three-phase controlled frequency AC power and may supply the three-phase controlled frequency AC power to a motor. The control circuitry may apply control signals to control operation of the motor. The drive module may also include an adapter that couples to a first end of the housing and couples the housing to the motor. The adapter may be removable and sized according to a frame size of the motor such that the drive module is compatible with the motor. The housing may be independent of the frame size of the motor. As such, the housing may be interchangeable for any motor frame size and/or motor power.

An electrical connector has a housing with a front surface, a rear surface, and side surfaces. A first wall extends between the front surface, the rear surface and the side surfaces. A second wall extends between the front surface, the rear surface and the side surfaces, the second wall having a radiused reference surface. An alignment projection extends from the radiused reference surface in a direction away from the first wall. Compression clips extend from the side surfaces. The compression clips have bases, beams and a latching projections, with the beams extending at angles relative to the side surfaces.