SYSTEM AND METHOD FOR RESPONDING TO ACTIVATION OF OVER VOLTAGE PROTECTION MECHANISMS DURING WIRELESS POWER TRANSFER
First Claim
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1. A method for transferring power from a wireless power outlet to a wireless power receiver, said method comprising:
- said wireless power outlet transmitting a first-type ping signal;
said wireless power receiver receiving said first-type ping signal;
said first-type ping signal inducing a receiver voltage at said wireless power receiver;
said wireless power receiver activating an over voltage protection mechanism; and
said wireless power outlet detecting that said wireless power receiver has activated said voltage protection mechanism.
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Abstract
In a system and method for transferring power from a wireless power outlet to a wireless power receiver, an outlet transmits a first-type ping signal transferring a burst of energy to the wireless power receiver. The outlet includes a detector able to detect when the receiver activates an over voltage protection mechanism. When the OVP is activated the outlet may transmit a lower energy second-type ping signal.
28 Citations
20 Claims
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1. A method for transferring power from a wireless power outlet to a wireless power receiver, said method comprising:
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said wireless power outlet transmitting a first-type ping signal; said wireless power receiver receiving said first-type ping signal; said first-type ping signal inducing a receiver voltage at said wireless power receiver; said wireless power receiver activating an over voltage protection mechanism; and said wireless power outlet detecting that said wireless power receiver has activated said voltage protection mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A control circuit for a wireless power outlet configured to transfer power to a wireless power receiver, said control circuit comprising:
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a frequency driver operable to provide a driving voltage across a primary coil of said wireless power outlet, said driving voltage oscillating at an operating frequency; and an OVP detection mechanism operable to detect an over voltage protection mechanism being activated in said wireless power receiver. - View Dependent Claims (17, 18, 19, 20)
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Specification