Wireless power transfer apparatus and power supplies including overlapping magnetic cores
First Claim
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1. A wireless power transfer apparatus comprising:
- a primary portion of the wireless power transfer apparatus comprising;
a primary magnetic core forming a recess, the recess having a center, a side wall, and a base defining a bottom of the recess; and
a primary coil inside the recess, the primary coil wound around the center of the recess; and
a secondary portion of the wireless power transfer apparatus separated from the primary portion of the wireless power transfer, the secondary portion comprising;
a secondary magnetic core including a protruding center portion; and
a secondary coil wound around the protruding center portion of the secondary magnetic core,wherein the secondary portion is configured for insertion into the primary portion so that at least a portion of the secondary coil wrapped around the protruding center portion overlaps the primary magnetic core side wall and is configured to provide separation between the primary magnetic core and the secondary magnetic core.
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Abstract
A primary coil can be inside the recess, where the primary coil is wound around the center of the recess. A secondary magnetic core can include a protruding center portion that is configured for insertion into the center of the recess so that the protruding center portion overlaps the primary magnetic core side wall and is configured to provide separation between the primary magnetic core and the secondary magnetic core. A secondary coil can be wound around the protruding center portion of the secondary magnetic core.
72 Citations
13 Claims
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1. A wireless power transfer apparatus comprising:
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a primary portion of the wireless power transfer apparatus comprising; a primary magnetic core forming a recess, the recess having a center, a side wall, and a base defining a bottom of the recess; and a primary coil inside the recess, the primary coil wound around the center of the recess; and a secondary portion of the wireless power transfer apparatus separated from the primary portion of the wireless power transfer, the secondary portion comprising; a secondary magnetic core including a protruding center portion; and a secondary coil wound around the protruding center portion of the secondary magnetic core, wherein the secondary portion is configured for insertion into the primary portion so that at least a portion of the secondary coil wrapped around the protruding center portion overlaps the primary magnetic core side wall and is configured to provide separation between the primary magnetic core and the secondary magnetic core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification