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US 2014/0191710 A1Published application
Wireless charger
AssigneeNXP B.V.
InventorsJohannes Petrus Maria van Lammeren, Klaas Brink, Aliaksei Vladimirovich Sedzin, Wihelmus H. C. Knubben
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Abstract
A wireless charger is disclosed. The charger contains a coil with a plurality of taps, thereby facilitating charging according to different frequencies and standards. Detection of the standard appropriate to a particular receiver may be accomplished by modulation of the power carrier or via low power modalities, including NFC or Bluetooth.
Claims9
An apparatus for wirelessly charging a receiver comprising:
- a coil having one or more taps;
- each of said taps being connected to a transmitter;
- and a controller capable of directing said transmitter to provide charging energy via that portion of said coil energized via a selected tap.
An apparatus for wirelessly charging a receiver comprising:
- a coil with a plurality of taps, each of said taps defining a respective portion of said coil;
- a plurality of switches, each of said switches being connected to a respective tap;
- a plurality of transmitters, each of said transmitters being connectable to a respective tap by closing said respective switch;
- a controller adapted to:
- (i) close a selected switch;
- (ii) choose a respective transmitter and cause said transmitter to transmit charging energy through said selected switch and thereby energize said respective portion of said coil;
- (iii) cause said respective transmitter to transmit a modulated communication signal.
4 more elements
Dependencies are inferred from the claim text.