SYSTEM AND METHOD FOR DETECTING, CHARACTERIZING, AND TRACKING AN INDUCTIVE POWER RECEIVER
First Claim
1. An inductive charger for detecting the position of an inductive power receiver proximate to an inductive charging surface, said inductive charger comprising:
- one or more resonators;
one or more drivable inductive power transmitters for transferring power to an inductive power receiver located proximate to said inductive charging surface, where said inductive charger is configured such that coupling between said one or more resonators and said one or more inductive power transmitters is substantially reduced; and
one or more resonator sensors, each generating sensor output indicative of a characteristic of power in said one or more resonators.
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Accused Products
Abstract
A system and method for detecting, characterizing, and tracking an inductive power receiver proximate to an inductive charging surface of an inductive charger. One or more resonators and one or more sensors provide information that can be utilized to detect, characterize, and track the inductive power receiver. The resonators can be configured to determine position of a remote device using magnitude or phase of sensors associated with resonators. In addition, by monitoring the inductive power transmitter and the resonators, the charger can differentiate between whether parasitic metal is present, a remote device is present, or both are present.
102 Citations
50 Claims
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1. An inductive charger for detecting the position of an inductive power receiver proximate to an inductive charging surface, said inductive charger comprising:
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one or more resonators; one or more drivable inductive power transmitters for transferring power to an inductive power receiver located proximate to said inductive charging surface, where said inductive charger is configured such that coupling between said one or more resonators and said one or more inductive power transmitters is substantially reduced; and one or more resonator sensors, each generating sensor output indicative of a characteristic of power in said one or more resonators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An inductive charging system for detecting the position of an inductive power receiver proximate to an inductive charger, said inductive charging system comprising:
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an inductive power receiver including a first drivable inductive power transmitter for transmitting power from said inductive power receiver to said inductive charger; an inductive power receiver for receiving power from an inductive charger; an inductive charger including one or more resonators; a second drivable inductive power transmitter for transferring power to said inductive power receiver located proximate to said inductive charging surface, where said inductive charger is configured such that coupling between said one or more resonators and said one or more inductive power transmitters is substantially reduced; and one or more sensors, each generating sensor output indicative of a characteristic of power in said one or more resonators; - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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30. An inductive charging system comprising:
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a remote device having; one or more inductive power receivers; an inductive charger having; one or more resonators; one or more drivable inductive power transmitters for transferring power to said inductive power receiver located proximate to said inductive charger, where said inductive charger is configured to reduce coupling between said one or more resonators and said one or more inductive power transmitters without substantially altering coupling between said inductive power receiver and said one or more inductive power transmitters when said remote device is positioned proximate to said inductive charger. - View Dependent Claims (38, 39, 40)
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Specification