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US 2013/0076153 A1Published application
Power receiving device, power transmitting device, wireless power transfer system, and wireless power transfer method
AssigneeSony Corporation
InventorsYuji Murayama, Hiroaki Nakano, Shinichi Fukuda
Life of this patent
Estimating the term…
Abstract
A power receiving unit includes a communication unit, a control unit, a detecting unit that performs metallic foreign matter detection, and a charge storage unit. The control unit is configured to control charging so electric power is stored in the charge storage unit for consumption by the detecting unit during Q-value measurement when the control unit receives a Q-value measurement command from the power transmitting device through the communication unit.
Claims21
An energy receiver comprising:
- a power reception coil configured to wirelessly receive power from an energy transmitter;
- a foreign object detector configured to detect a foreign object within a range of a wireless energy transmission of the energy transmitter;
- and
- an energy storage element configured to store power received from the energy transmitter after receiving a command related to detection of the foreign object.
1 more element
A detection method comprising:
- transmitting a first command from an energy transmitter to identify one or more energy receivers operable to wirelessly receive power from the energy transmitter;
- transmitting identification information from each of the one or more energy receivers to the energy transmitter upon receipt of the first command;
- and
- transmitting a second command to activate a foreign object detection process configured to detect a foreign object within a range of a wireless energy transmission of the energy transmitter,
- wherein each of the one or more energy receivers is configured to independently store power received from the energy transmitter in an energy storage element after receiving the second command to activate the foreign object detector process.
2 more elements
An energy transmitter comprising:
- a power transmission coil configured to wirelessly transmit power to at least one energy receiver;
- and
- a communication unit configured to activate a power storage process in the at least one energy receiver by transmitting a command to activate a foreign object detection process configured to detect a foreign object within a range of a wireless energy transmission of the energy transmitter.
A detection device comprising:
- a foreign object detector configured to detect a foreign object within a range of a wireless transmission of power between an energy receiver and an energy transmitter;
- and
- an energy storage element configured to store power received from the energy transmitter upon receipt of a command related to detection of the foreign object.
Dependencies are inferred from the claim text.