Power receiving apparatus, power transmission apparatus, wireless power transmission method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorTakahiro Shichino
Life of this patent
Estimating the term…
Abstract
A power receiving apparatus wirelessly receives power from a power transmission apparatus that performs first detection processing of detecting a foreign object based on values of voltages or currents at at least two time points in a predetermined period during which power transmission is restricted, transmits, to the power transmission apparatus, data indicating received power that is to be used in second detection processing of detecting a foreign object based on power loss in accordance with a result of the first detection processing, changes an output voltage to be output to a load, and, in a case where the output voltage is changed after the data is transmitted, controls the data not to be used in the second detection processing.
Claims14
A power receiving apparatus comprising:
- a power receiving unit configured to wirelessly receive power from a power transmission apparatus that performs first detection processing of detecting a foreign object based on values of voltages or currents at at least two time points in a predetermined period during which power transmission is restricted;
- a transmission unit configured to transmit, to the power transmission apparatus, data indicating received power of the power receiving apparatus that is to be used in second detection processing in which the power transmission apparatus detects a foreign object based on power loss that is based on transmitted power of the power transmission apparatus and received power of the power receiving apparatus, in accordance with a result of the first detection processing;
- a change unit configured to change an output voltage to be output to a load included in the power receiving apparatus;
- and
- a control unit configured to, in a case where the output voltage is changed by the change unit after the data is transmitted by the transmission unit, control the data not to be used in the second detection processing.
A power receiving apparatus comprising:
- a power receiving unit configured to wirelessly receive power from a power transmission apparatus that performs first detection processing of detecting a foreign object based on values of voltages or currents at at least two time points in a predetermined period during which power transmission is restricted;
- a transmission unit configured to transmit, to the power transmission apparatus, data indicating received power of the power receiving apparatus that is to be used in second detection processing in which the power transmission apparatus detects a foreign object based on power loss that is based on transmitted power of the power transmission apparatus and received power of the power receiving apparatus, in accordance with a result of the first detection processing;
- a change unit configured to change an output voltage to be output to a load included in the power receiving apparatus;
- and
- a control unit configured to control the data to be transmitted by the transmission unit after the output voltage is changed by the change unit.
Dependencies are inferred from the claim text.