Systems and methods for identifying an ideal operation frequency for wireless power transfer
First Claim
1. A method for wirelessly transmitting power to power or charge a wireless power receiver, the method comprising:
- during a first time period, transmitting power at a first power level from a wireless power transmitter to the wireless power receiver;
determining a frequency for transmitting power at a second power level based on a ratio of a current level of the wireless power receiver to a current level of a wireless power transmitter at the first power level;
during a second time period, transmitting power at the second power level and at the frequency, the first power level lower than the second power level.
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Accused Products
Abstract
The present disclosure described herein relates to wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices. In an aspect of the disclosure, a method for wirelessly transmitting power is provided. The method includes during a first time period, transmitting power at a first power level from a wireless power transmitter to the wireless power receiver. The method further includes determining a frequency for transmitting power at a second power level based on a ratio of a current level of the wireless power receiver to a current level of a wireless power transmitter at the first power level. The method further includes during a second time period, transmitting power at the second power level and at the frequency, the first power level lower than the second power level.
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Citations
30 Claims
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1. A method for wirelessly transmitting power to power or charge a wireless power receiver, the method comprising:
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during a first time period, transmitting power at a first power level from a wireless power transmitter to the wireless power receiver; determining a frequency for transmitting power at a second power level based on a ratio of a current level of the wireless power receiver to a current level of a wireless power transmitter at the first power level; during a second time period, transmitting power at the second power level and at the frequency, the first power level lower than the second power level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 24)
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10. An apparatus for wirelessly transmitting power to power or charge a wireless power receiver, comprising:
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a transmit circuit configured to, during a first time period, transmit power at a first power level to the wireless power receiver; and a processor circuit configured to determine a frequency for transmitting power at a second power level based on a ratio of a current level of the wireless power receiver to a current level of the transmit circuit at the first power level, wherein the transmit circuit is further configured to, during a second time period, transmit power at a second power level and at the frequency, the first power level lower than the second power level. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for wirelessly transmitting power to power or charge a wireless power receiver, comprising:
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means for transmitting power at a first power level, during a first time period, to the wireless power receiver; means for determining a frequency for transmitting power at a second power level based on a ratio of a current level of the wireless power receiver to a current level of the transmitting means at the first power level; means for transmitting power at the second power level and at the frequency, during a second time period, the first power level lower than the second power level. - View Dependent Claims (20, 21, 22, 23, 25)
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26. A non-transitory computer readable storage medium comprising instructions that when executed cause an apparatus to perform a method for wirelessly transmitting power to a wireless power receiver, comprising:
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during a first time period, transmitting power at a first power level from a wireless power transmitter to the wireless power receiver; determining a frequency for transmitting power at a second power level based on a ratio of a current level of the wireless power receiver to a current level of a wireless power transmitter at the first power level; during a second time period, transmitting power at the second power level and at the frequency, the first power level lower than the second power level. - View Dependent Claims (27, 28, 29, 30)
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Specification