Vehicle charging pad having reduced thickness
First Claim
Patent Images
1. A charging pad, comprising:
- a first coil structure, the first coil structure including;
a first coil section wound in a first direction; and
a second coil section coplanar with the first coil section and wound in a second direction opposite the first direction;
a second coil structure; and
a ferrite block structure, the ferrite block structure including two ferrite block sections separated by a longitudinally extending slot, and at least one wire extending from the first coil structure and at least one wire extending from the second coil structure extending through a portion of the longitudinally extending slot in the ferrite block structure.
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Abstract
This disclosure provides systems, methods and apparatus for charging pads for use with wireless power systems. In one aspect a vehicle charging pad having a reduced thickness is provided. A charging pad may include multiple wire coils and a ferrite block backing. By forming a longitudinally extending slot in the ferrite block, a portion of the wires extending from the coils can be routed through the slot in the ferrite block to decrease the overall thickness of the charging pad.
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Citations
29 Claims
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1. A charging pad, comprising:
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a first coil structure, the first coil structure including; a first coil section wound in a first direction; and a second coil section coplanar with the first coil section and wound in a second direction opposite the first direction; a second coil structure; and a ferrite block structure, the ferrite block structure including two ferrite block sections separated by a longitudinally extending slot, and at least one wire extending from the first coil structure and at least one wire extending from the second coil structure extending through a portion of the longitudinally extending slot in the ferrite block structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A ferrite block structure for use in a charging pad, the structure comprising:
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a base plate; a first ferrite block section supported by the base plate, wherein the first ferrite block section is a first modular ferrite block assembly including a first plurality of ferrite tiles; and a second ferrite block section supported by the base plate and separated from the first ferrite block section by a longitudinally extending slot, wherein the second ferrite block section is a second modular ferrite block assembly including a second plurality of ferrite tiles. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A charging pad, comprising:
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first means for extracting power from a horizontal component of a magnetic field intercepted by the charging pad; second means for extracting power from a vertical component of the magnetic field intercepted by the charging pad; means for enhancing coupling between the first and second power extracting means and a wireless charging system; and means for permitting passage between sections of the coupling enhancing means of at least one wire extending from the first power extracting means and at least one wire extending from the second power extracting means. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification