Abstract: An axial field rotary energy device can include a housing and a rotor rotatably coupled to the housing. The rotor can have an axis of rotation and magnets. A stator assembly can be coupled to the housing coaxial with and adjacent to the rotor. The stator assembly can include a printed circuit board (PCB) having electrically conductive coils and an internal air duct for cooling the stator assembly.

Abstract: An axial field rotary energy device can include a housing and a rotor rotatably coupled to the housing. The rotor can have an axis of rotation and magnets. A stator assembly can be coupled to the housing coaxial with and adjacent to the rotor. The stator assembly can include a printed circuit board (PCB) having electrically conductive coils and an internal air duct for cooling the stator assembly.

Abstract: A manifold-microchannel (MMC) heat sink can comprise a plurality of microchannels and a manifold. The microchannels can be segregated into successive heat transfer stages. The manifold can include at least one connecting channel and at least one vapor permeable membrane portion. Each connecting channel can fluidically couple one of the heat transfer stages to a successive heat transfer stage. Each vapor permeable membrane portion can allow coolant in a vapor phase to pass therethrough while retaining coolant in a liquid phase within the corresponding connecting channel. A vapor quality of the coolant exiting from one of the heat transfer stages into a connecting channel can be greater than a vapor quality of the coolant entering the successive heat transfer stage from the same connecting channel.

Abstract: The thermal management system for in-slot cooling of electric motors includes separating structures, either in the form of a scaffolding structure or a monolithic winding structure which is placed in between the adjacent winding turns to physically separate the winding turns to define coolant fluid passages for circulation of a coolant fluid in direct contact with the lateral surfaces of the winding turns. The scaffolding and monolithic winding structures are made from an electrically insulating material and are filled with a dielectric fluid that serves both the coolant and the electrical insulator between the winding turns. An end-winding organizer may be positioned at two end regions of each stator tooth to provide a curved surface for the winding turns to be held in tension throughout the 180° winding end turns and is formed with grooves to define the passage for the coolant flow to ensure that the flowing coolant reaches the surface of the innermost winding turns.