Inductive power supply system with multiple coil primary
First Claim
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1. An inductive power supply for supplying wireless power to and receiving communication from a remote device, said inductive power supply comprising:
- a first wireless power transfer primary capable of being energized to transfer power wirelessly to said remote device;
a second wireless power transfer primary capable of being energized to transfer power wirelessly to said remote device;
a wireless communication receiver for receiving communication from said remote device via a communication path excluding said first wireless power transfer primary and said second wireless power transfer primary;
a controller programmed to selectively transfer power wirelessly to said remote device by energizing said first wireless power transfer primary within a first power range or said second wireless power transfer primary within a second power range, said controller programmed to receive communication from said remote device during wireless power transmission within said first power range via said communication path excluding said first wireless power transfer primary and said second wireless power transfer primary,said controller programmed to receive communication from said remote device during wireless power transmission within said second power range via a communication path including at least one of said first wireless power transfer primary and said second wireless power transfer primary.
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Abstract
An inductive power supply including multiple tank circuits and a controller for selecting at least one of the tank circuits in order to wirelessly transfer power based on received power demand information. In addition, a magnet may be used to align multiple remote devices with the inductive power supply. In one embodiment, different communication systems are employed depending on which coil is being used to transfer wireless power.
52 Citations
21 Claims
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1. An inductive power supply for supplying wireless power to and receiving communication from a remote device, said inductive power supply comprising:
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a first wireless power transfer primary capable of being energized to transfer power wirelessly to said remote device; a second wireless power transfer primary capable of being energized to transfer power wirelessly to said remote device; a wireless communication receiver for receiving communication from said remote device via a communication path excluding said first wireless power transfer primary and said second wireless power transfer primary; a controller programmed to selectively transfer power wirelessly to said remote device by energizing said first wireless power transfer primary within a first power range or said second wireless power transfer primary within a second power range, said controller programmed to receive communication from said remote device during wireless power transmission within said first power range via said communication path excluding said first wireless power transfer primary and said second wireless power transfer primary, said controller programmed to receive communication from said remote device during wireless power transmission within said second power range via a communication path including at least one of said first wireless power transfer primary and said second wireless power transfer primary. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for supplying wireless power to and receiving communication from a remote device, said method comprising:
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providing a plurality of primaries, each capable of being energized to transfer power wirelessly to the remote device; determining an amount of power to supply to said remote device; selectively transferring said amount of power wirelessly to said remote device by energizing at least one of said plurality of primaries as a wireless power transfer primary; and depending on said amount of power being transferred to said remote device, selectively communicating with said remote device via wireless power transfer primary during transfer of power within a first power range or communicating with said remote device via one of said plurality of primaries other than said wireless power transfer primary during transfer of power within a second power range. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An inductive power supply for supplying wireless power to and receiving communication from a remote device, said inductive power supply comprising:
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a controller; a wireless power transfer primary capable of being energized to transfer an amount of power wirelessly to said remote device; a first communication path between said remote device and said controller, said first communication path including said wireless power transfer primary; a second communication path between said remote device and said controller, said second communication path excluding said wireless power transfer primary and including at least one of WIFI, infrared, Bluetooth, cellular, and RFID; wherein said controller is programmed to selectively communicate with said remote device via said first communication path or said second communication path depending on said amount of power wirelessly transferred to said remote device. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification