Disclosed herein is a heatsink for removing heat from a heat source. The heatsink comprises a surface for placing adjacent to the heat source comprising a plurality of cavities formed into the surface, the plurality of cavities open on a side of the surface away from the side of the surface for placing adjacent to the heat source, and a plurality of projections, each projection extending from the surface adjacent to a corresponding cavity. Each cavity comprises a throat region configured to restrict the flow of air between each respective cavity and the region between a corresponding pair of projections extending from the surface adjacent to the cavity.

An end coil cooling structure includes: a shielding member which is disposed within a motor housing, surrounds an area where an end coil is disposed, and forms an enclosed space; and a plurality of heat conducting particles disposed to fill the enclosed space and to come into contact with the end coil.

A drivetrain system includes a housing configured to at least partially contain a liquid lubricant such as oil that flows through a gearset. Within the housing is arranged a plurality of bearings configured to constrain respective trajectories of respective shafts. An inner surface of the housing includes a first region surrounding a motor gear bearing that is actively cooled by a coolant. The inner surface also includes a second region that is distal to the motor gear bearing and that is not actively cooled by the coolant. Cooling pins are arranged in the first region and are configured to provide heat transfer from the liquid lubricant to the coolant. The gear set can include more than one shaft, with at least one gear configured to splash oil onto the cooling pins to transfer heat from the liquid lubricant to a coolant flowing in a motor housing adjacent the first region.

A linear motor with high heat recovery efficiency that inhibits the rise in surface temperature is offered. The linear motor is disposed in a surrounding member (142) and facing a flow passage (142a) of a liquid for regulating temperature, and is provided with a coil unit (141) having at least a part thereof in contact with the liquid. The coil unit (141) is provided with a coil body (144), a mold layer (143) that covers the coil body and holds it in specific form, and a liquid protection layer (150) that covers the mold layer (143) and has liquid protection properties.

A radial flux electric machine includes a rotor configured to rotate about an axis of rotation, a plurality of electromagnetic coils, and a stator. The stator may have an annular stator ring and a plurality of core tooth-portions extending in a radial direction. The annular stator ring and the plurality of core tooth-portions may be integrally formed of a Soft Magnetic Composite (SMC). The SMC may include one or more isotropic ferromagnetic materials, a magnetic saturation induction of greater than or equal to about 1.6 Tesla, and an electrical resistivity greater than 10 micro-ohm/m.

An electric motor control system and methods of manufacture are provided. The system includes a power supply module including a printed circuit board (PCB) and a plurality of power processing components configured to convert an input voltage into an output voltage. The system also includes a motor management module including an encapsulated, heat-sharing package for housing a plurality of moisture-sensitive driver components configured to convert the output voltage from the power supply module and provide output voltages for application to windings of the electric motor.

A cooling system of an electromechanical actuator is provided. The cooling system includes a housing and a stator located within the housing and defining a central bore. A first body including a sleeve portion is configured to extend into the central bore of the stator, with the first body defining a first chamber including a first cavity within the sleeve portion and a second cavity fluidly connected to the first cavity. A heat sink is provided in thermal communication with the second cavity.

An electric device includes a case, an electric component that is provided in the case and has a main body section and a lead terminal extending from the main body section, the main body section being supported on the case, a circuit board that is provided in the case and has a connecting hole through which the lead terminal is inserted, and a guide member that has a guide hole positioned relative to the connecting hole, the lead terminal being disposed to penetrate through the guide hole.

Pump motor, with a crankcase, a pump head, and a containment shell, whereby the pump head with the containment shell defines a wet chamber and the containment shell with the crankcase defines a dry chamber, a permanent magnet rotor is rotatably mounted in the wet chamber around an axis, a wound stator and a printed circuit board are arranged in the dry chamber and the printed circuit board is located opposite to the containment shell bottom. The pump motor economically provides for a reliable heat dissipation with an increased heat dissipation capacity, from the printed circuit board into the medium which has to be transported, in the case of a pump motor of an appropriate kind.

According to various aspects, exemplary embodiments of an electric motor are provided herein. In one embodiment of this disclosure, an electric motor includes a rotor, at least one end of the rotor includes at least one blade and at least one array of micro-features, wherein heat generated by the rotor is dissipated by the at least one blade and the at least one array of micro-features.

In another embodiment, a method of manufacturing an electric motor having a rotor, the method comprising machining a piece of conductive material to create micro-features on at least one end of the conductive material; and inserting the conductive material into the rotor.