A device for driving a compressor of a vaporous fluid which exhibits a housing with a cooling surface and a power supply arrangement with at least one switching element, at least one PCB, as well as at least one spring element for applying a spring force on the at least one switching element. The switching element is connected to the PCB. The cooling surface and the PCB are arranged relative to one another in a direction z with spacing. The at least one switching element is arranged such that it is in contact with the housing with a first surface in the area of the cooling surface and that the at least one spring element for pressing the switching element against the cooling surface is in contact with a second surface of the switching element.

A component of electric motor configured to cool windings mounted therein is described, wherein the component is made of a material formed by an aggregate of granules coated with an electrically insulating layer, wherein the granules are substantially in contact with each other.

Disclosed is an electric motor stator structure, belonging to the technical field of electrical manufacturing. The electric motor stator structure solves the problems in the prior art of a large amount of glue being required for glue pouring of electrical elements and high cost. According to the electric motor stator structure, large-particle-size solid particles are arranged in large-size gaps between a shell, an iron core and/or a winding; small-size gaps between the shell, the iron core, the winding and/or the large-particle-size solid particles are filled with a colloid layer; the colloid layer is formed by solidifying a liquid colloid; the colloid comprises a binding agent and heat-conducting insulating powder; and the particle size of the large-particle-size solid particles is larger than that of the heart-conducting insulating powder. According to the electric motor stator structure, the solid large-particle-size solid particles are arranged in the colloid, such that the amount of the colloid can be reduced, the solid large-particle-size solid particles are lower in cost than the colloid and better than the colloid in terms of heat conduction and insulation performance, and the toughness of the colloid can be improved by adding the large-particle-size solid particles. The present invention simultaneously achieves the effects of reducing the cost, improving the toughness of the colloid and improving the heat conduction effect.

A motor unit for use in an electric bicycle, the motor unit including a motor configured to drive a wheel of the electric bicycle in rotation. The motor unit includes a shell which at least partially houses the motor. The motor includes a rotary shaft, a rotor coupled to the rotary shaft to rotate along with the rotary shaft, and a stator arranged to surround the rotor. The stator is partially resin-molded and has a metallic surface exposed on an outer periphery thereof. A pin is interposed between the shell and the stator.

The present disclosure relates to an electric motor having a stator and a rotor. The rotor is fitted with permanent magnets which are surrounded by a rotor packet. A heat dissipating elementis attached to the rotor packet. A gap seal is formed between an outer diameter of the heat dissipating element and an inner diameter of a component connected to the stator. In some examples, the component may be a coil body connected to the stator.

A stator of an external rotor motor supports a plurality of excitation windings. At least one heat dissipation means is provided, for discharging heat in an axial direction. The heat dissipation means contacts the end face of at least one excitation winding or a potting compound or insulation enclosing the excitation winding and is also connected to a heat sink, in the form of the stator carrier, a cooling element and/or a housing, for removing the heat.

A fluid moving apparatus includes an electric motor having a rotor and a stator and a propeller. The rotor rotates relative to the stator on an axis to generate a rotational output. The rotational output is provided to the propeller to power the marine propulsion apparatus. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the axis. A portion of a housing of the motor extends into the aquatic environment to facilitate heat dissipation.

Provided is a power control device that drives an electric motor including a rotor into which a rotary shaft is inserted and a stator, the stator being provided on an outer peripheral side of the rotor, the power control device including: a substrate having a through hole and disposed to face the rotor and the stator, the rotary shaft being caused to pass through the through hole; a power semiconductor module mounted on the substrate and including a drive circuit; and a microcomputer mounted on the substrate, and configured to control power supplied to the electric motor, wherein the substrate is integrally formed with the stator by using a molded resin, and a first part having a lower thermal conductivity than the molded resin is disposed on the substrate at a position between the power semiconductor module and the microcomputer.

A power tool including an electric motor is provided. The tool includes a substantially disc-shaped printed circuit board (PCB), power switches mounted on the PCB; magnetic sensors mounted on the PCB facing the motor; a heat sink in thermal communication with the power switches disposed between the PCB and the electric motor; and a molded casing structurally securing the heat sink relative to the PCB. The molded casing includes a center opening, at least one first opening provided at a first radial distance from the center opening arranged to receive the magnetic sensors therein, and at least one second opening provided at a second radial distance from the center opening arranged to securely receive the heat sink therein.

In a driving unit of an electromechanical motor unit, a semiconductor chip and a smoothing capacitor are joined to a second main surface of a substrate having a first main surface and the second main surface. The semiconductor chip includes a first end portion facing the second main surface, and a second end portion on the opposite side of the semiconductor chip from the first end portion. The smoothing capacitor includes a third end portion facing the second main surface, and a fourth end portion on the opposite side of the smoothing capacitor from the third end portion. The semiconductor chip is thermally connected to a bottom wall portion of a cover member, at a position closer to the second main surface than the fourth end portion is. The bottom wall portion is thermally connected to the motor housing via a sidewall portion of the cover member.