Magnetic material filled printed circuit boards and printed circuit board stators
AssigneeE-Circuit Motors, Inc.
InventorsGeorge Harder Milheim, Steven Robert Shaw, Ryan Terrence Duffy, Edward Charles Carignan
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Abstract
A dielectric substrate may support conductive traces that form windings for a least one pole of a planar armature of an axial flux machine. At least a portion of the dielectric substrate, which is adapted to be positioned within an annular active area of the axial flux machine, may include a soft magnetic material. Such a planar armature may be produced, for example, by forming the conductive traces on the dielectric substrate, and filling interstitial gaps between the conductive traces with at least one epoxy material in which the soft magnetic material is embedded.
Claims15
A planar armature for an axial flux machine, the planar armature comprising:
- a first layer comprising a first dielectric substrate;
- a second layer comprising a second dielectric substrate;
- and
- a third layer disposed between the first layer and the second layer, wherein the third layer comprises:
- first conductive traces that form at least first portions of windings for at least a first pole of the planar armature,
- a first quantity of a magnetic composite material disposed in interstices between the first conductive traces within at least a first region of the third layer, wherein the magnetic composite material comprises particles of a soft magnetic material embedded within a first dielectric material and the first region is located within an active area of the axial flux machine, and
- a second quantity of a second dielectric material disposed within at least a second region of the third layer, wherein the second dielectric material is free of the soft magnetic material and the second region is located outside of the active area.
Dependencies are inferred from the claim text.