Electric machine stator cooling systems and methods
AssigneeZero E Technologies, LLC
InventorsThomas H. Hopkins, Felipe J. Castillo, Scott T. Graham, Keith W. Klontz
Life of this patent
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Abstract
An electromagnet for an electric machine having a stack of laminations defining a tooth and a yoke segment, and an insulating bobbin surrounding a portion of the tooth of each lamination, such that each lamination is held against adjacent laminations by the bobbin. The disclosed electromagnets also have electrically conductive windings surrounding a portion of the bobbin; and an encapsulant fully encapsulating the bobbin and windings, wherein the encapsulant comprises a dielectric material and an additive to increase the thermal conductivity of the encapsulant.
Claims10
An electromagnet for an electric machine comprising:
- a stack of laminations, with each lamination defining a tooth and a yoke segment;
- an insulating bobbin surrounding a portion of the tooth of each lamination,
- wherein each lamination is held against adjacent laminations by the bobbin;
- electrically conductive windings surrounding a portion of the bobbin;
- and
- an encapsulant fully encapsulating the bobbin and windings;
- and wherein the stack of individual laminations comprises;
- a first lamination;
- a second lamination adjacent to the first lamination;
- a first heat transfer layer bonded to a first planar face of the first lamination;
- and
- a second heat transfer layer bonded to a first planar face of the second lamination.
A method of fabricating an electromagnet for an electric machine comprising:
- providing a stack of laminations defining a tooth and a yoke segment;
- placing an insulating bobbin around a portion of the tooth of each lamination, to hold each lamination against adjacent laminations with the bobbin;
- winding an electrically conductive winding around a portion of the bobbin;
- fully encapsulating the bobbin and windings, wherein the encapsulant comprises a dielectric material and an additive to increase the thermal conductivity of the encapsulant;
- providing first and second individual laminations that are adjacent to each other;
- and
- bonding a heat transfer layer to a first planar face of each of the first and second individual laminations.
Dependencies are inferred from the claim text.