Wireless power transfer pad with ferrite pyramid-shaped chimney
AssigneeWireless Advanced Vehicle Electrification, Inc.
InventorPatrice Lethellier
Life of this patent
Estimating the term…
Abstract
A wireless power transfer (“WPT”) pad with a pyramid-shaped ferrite chimney is disclosed. The WPT pad includes a winding comprising a conductor where the conductor is wound in a planar configuration. The winding includes a center point about which the winding is wound. The WPT pad includes a ferrite structure that includes a parallel section located on a side of the winding with at least a portion in parallel with the winding and a chimney section in magnetic contact with the parallel section and located at the center point of the winding. The chimney section extends perpendicular to the parallel section.
Claims18
A wireless power transfer (“WPT”) pad comprising:
- a winding comprising a conductor, wherein the conductor is wound in a planar configuration, the winding comprising a center point about which the winding is wound;
- and
- a ferrite structure comprising:
- a parallel section located on a side of the winding with at least a portion in parallel with the winding;
- and
- a chimney section in magnetic contact with the parallel section and located at the center point of the winding, the chimney section extending perpendicular to the parallel section,
- wherein the chimney section extends in a direction from the parallel section toward the winding, the chimney section comprising a top distal to the parallel section and sides between the top and the parallel section and wherein the sides of the chimney section comprise a slope wherein each side is wider at the parallel section than at the top of the chimney section and each side of the chimney section is continuous from the parallel section to the top.
A wireless power transfer (“WPT”) pad comprising:
- a winding comprising a conductor, wherein the conductor is wound in a planar configuration, the winding comprising a center point about which the winding is wound;
- and
- a ferrite structure comprising:
- a parallel section located on a side of the winding with at least a portion in parallel with the winding;
- a chimney section in magnetic contact with the parallel section and located at the center point of the winding, the chimney section extending perpendicular to the parallel section, wherein the chimney section extends in a direction from the parallel section toward the winding, the chimney section comprising a top distal to the parallel section and sides between the top and the parallel section, the sides of the chimney section comprising a slope wherein each side is wider at the parallel section than at the top of the chimney section and each side of the chimney section is continuous from the parallel section to the top;
- and
- an exterior section located exterior to an outside edge of the winding, the outside edge distal to the chimney section, wherein the exterior section is in magnetic contact with the parallel section and extends perpendicular to the parallel section.
A wireless power transfer (“WPT”) system comprising:
- a resonant converter that receives power from a power source;
- and
- a WPT pad connected to the resonant converter, the WPT pad receiving power from the resonant converter, the WPT pad comprising:
- a winding comprising a conductor, wherein the conductor is wound in a planar configuration, the winding comprising a center point about which the winding is wound;
- and
- a ferrite structure comprising a parallel section located on a side of the winding with at least a portion in parallel with the winding, and a chimney section in magnetic contact with the parallel section and located at the center point of the winding, the chimney section extending perpendicular to the parallel section,
- wherein the chimney section extends in a direction from the parallel section toward the winding, the chimney section comprising a top distal to the parallel section and sides between the top and the parallel section and wherein the sides of the chimney section comprise a slope wherein each side is wider at the parallel section than at the top of the chimney section and each side is continuous from the parallel section to the top.
Dependencies are inferred from the claim text.