WIRELESS CHARGING STATION
First Claim
1. A wireless charging transmitter comprising:
- a coil configured to transmit power, the coil comprising;
a first loop portion;
a second loop portion; and
a crossing portion comprising overlapping conductive paths that electrically couple the first loop portion and the second loop portion such that, when an electrical current is generated in the coil, the electrical current flows;
through the first loop portion in a first rotational direction; and
through the second loop portion in a second rotational direction opposite the first rotational direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless charging system including a transmitter and a receiver. The transmitter is formed of a coil of wire that includes a first loop portion, a second loop portion, and a crossing portion. The crossing portion electrically couples the first loop portion and the second loop portion such that when current is generated in the coil, electrical current flows through the first loop portion in a different rotational direction than in the second loop portion. The receiver is formed of a ferromagnetic core and multiple (e.g., three) coils disposed about the ferromagnetic core. Each coil may be disposed about a different axis of the core such that current may be induced in at least one of the coils by a magnetic field in any direction.
32 Citations
20 Claims
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1. A wireless charging transmitter comprising:
a coil configured to transmit power, the coil comprising; a first loop portion; a second loop portion; and a crossing portion comprising overlapping conductive paths that electrically couple the first loop portion and the second loop portion such that, when an electrical current is generated in the coil, the electrical current flows; through the first loop portion in a first rotational direction; and through the second loop portion in a second rotational direction opposite the first rotational direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless charging receiver comprising:
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a first coil disposed relative to a first axis; a second coil disposed relative to a second axis, the second axis extending in a direction different than the first axis; and a ferromagnetic structure positioned adjacent to the first coil and the second coil. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A wireless charging system comprising:
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a transmitter assembly comprising; a charging surface; and a plurality of transmitter coils disposed below the charging surface, the plurality of coils comprising; first and second transmitter coils configured to transmit power, the first coil generating first and second magnetic fields and the second coil generating third and fourth magnetic fields when driven with electrical current, the first and second transmitter coils forming a bridging magnetic field disposed between the first and second transmitter coils; a receiver assembly comprising; a first coil disposed relative to a first axis; a second coil disposed relative to a second axis, the second axis extending in a direction different than the first axis; and a ferromagnetic structure positioned adjacent to the first coil and the second coil. - View Dependent Claims (19, 20)
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Specification