Structures and methods for thermal management in printed circuit board stators
First Claim
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1. A planar composite structure (PCS) configured for use as a stator of an axial flux motor or generator, the PCS comprising:
- at least one dielectric layer;
first elongated conductive elements arranged angularly on the at least one dielectric layer, each of the first elongated conductive elements extending radially between a first radial distance from an origin point associated with the at least dielectric layer and a second radial distance from the origin point, wherein the second radial distance is greater than the first radial distance;
conductive inner end turns disposed on the at least one dielectric layer, each of the conductive inner end turns being connected between portions of at least two of the first elongated conductive elements at the first radial distance;
conductive outer end turns disposed on the at least one dielectric layer, each of the conductive outer end turns being connected between portions of at least two of the first elongated conductive elements at the second radial distance; and
at least one second elongated conductive element disposed on the at least one dielectric layer, the at least one second elongated conductive element extending radially between a third radial distance from the origin point and a fourth radial distance from the origin point, wherein;
the fourth radial distance is greater than the third radial distance,either (a) the fourth radial distance is less than the first radial distance, or (b) the third radial distance is greater than the second radial distance, andthe at least one second elongated conductive element is thermally connected to at least a first one of the first elongated conductive elements without the at least one second elongated conductive element also being electrically connected to the first one of the first elongated conductive elements.
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Abstract
A stator for a motor or generator including a planar composite structure (PCS) having at least one dielectric layer and a plurality of conductive layers is provided. The stator includes first conductive elements extending radially to a distance r1 from a center of, and disposed angularly on, the PCS. Each first conductive element includes a preferred termination structure to connect with at least one of a plurality of second conductive elements extending radially from a radius r2 from the center of, and disposed angularly on, the PCS.
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Citations
20 Claims
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1. A planar composite structure (PCS) configured for use as a stator of an axial flux motor or generator, the PCS comprising:
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at least one dielectric layer; first elongated conductive elements arranged angularly on the at least one dielectric layer, each of the first elongated conductive elements extending radially between a first radial distance from an origin point associated with the at least dielectric layer and a second radial distance from the origin point, wherein the second radial distance is greater than the first radial distance; conductive inner end turns disposed on the at least one dielectric layer, each of the conductive inner end turns being connected between portions of at least two of the first elongated conductive elements at the first radial distance; conductive outer end turns disposed on the at least one dielectric layer, each of the conductive outer end turns being connected between portions of at least two of the first elongated conductive elements at the second radial distance; and at least one second elongated conductive element disposed on the at least one dielectric layer, the at least one second elongated conductive element extending radially between a third radial distance from the origin point and a fourth radial distance from the origin point, wherein; the fourth radial distance is greater than the third radial distance, either (a) the fourth radial distance is less than the first radial distance, or (b) the third radial distance is greater than the second radial distance, and the at least one second elongated conductive element is thermally connected to at least a first one of the first elongated conductive elements without the at least one second elongated conductive element also being electrically connected to the first one of the first elongated conductive elements. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A planar composite structure (PCS) configured for use as a stator of an axial flux motor or generator, the PCS comprising:
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at least one dielectric layer; first elongated conductive elements arranged angularly on the at least one dielectric layer, each of the first elongated conductive elements extending radially between a first radial distance from an origin point associated with the at least one dielectric layer and a second radial distance from the origin point, wherein the second radial distance is greater than the first radial distance, a first one of the first elongated conductive elements being disposed on a first surface of the at least one dielectric layer, and a second one of the first elongated conductive elements being disposed on a second surface of the at least one dielectric layer opposite the first surface; conductive inner end turns disposed on the at least one dielectric layer, each of the conductive inner end turns being connected between portions of at least two of the first elongated conductive elements at the first radial distance; conductive outer end turns disposed on the at least one dielectric layer, each of the conductive outer end turns being connected between portions of at least two of the first elongated conductive elements at the second radial distance; a second conductive element disposed on the first surface, a first portion of the second conductive element being connected to a first portion of the first one of the first elongated conductive elements at the second radial distance; and a first via extending through the at least one dielectric layer, wherein the first via; is angularly offset from the first portion of the first one of the first elongated conductive elements, and electrically interconnects the first one of the first elongated conductive elements and the second one of the first elongated conductive elements through at least the second conductive element. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A planar composite structure (PCS) configured for use as a stator of an axial flux motor or generator, the PCS comprising:
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at least one dielectric layer; first elongated conductive elements arranged angularly on the at least one dielectric layer, each of the first elongated conductive elements extending radially between a first radial distance from an origin point associated with the at least dielectric layer and a second radial distance from the origin point, wherein the second radial distance is greater than the first radial distance; conductive inner end turns disposed on the at least one dielectric layer, each of the conductive inner end turns being connected between portions of at least two of the first elongated conductive elements at the first radial distance; conductive outer end turns disposed on the at least one dielectric layer, each of the conductive outer end turns being connected between portions of at least two of the first elongated conductive elements at the second radial distance; and first and second outer elongated conductive elements disposed on the at least one dielectric layer and each extending radially between a third radial distance from the origin point and a fourth radial distance from the origin point, wherein; the fourth radial distance is greater than the third radial distance, the third radial distance is greater than the second radial distance, and each of the first and second outer elongated conductive elements is thermally connected to a first one of the first elongated conductive elements. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification