US 11,909,227 B2
Power transmitting apparatus, power receiving apparatus, control method therefor, and storage medium
Takahiro Shichino, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 8, 2022, as Appl. No. 17/835,832.
Application 17/835,832 is a continuation of application No. PCT/JP2020/041317, filed on Nov. 5, 2020.
Claims priority of application No. 2019-223005 (JP), filed on Dec. 10, 2019.
Prior Publication US 2022/0302768 A1, Sep. 22, 2022
Int. Cl. H02J 50/60 (2016.01); H02J 50/80 (2016.01); H02J 50/12 (2016.01)
CPC H02J 50/60 (2016.02) [H02J 50/12 (2016.02); H02J 50/80 (2016.02)] 19 Claims
OG exemplary drawing
 
1. A power transmitting apparatus that wirelessly transmits power to a power receiving apparatus, comprising:
an obtaining unit configured to obtain a power loss on the basis of transmission power transmitted by the power transmitting apparatus and received power received by the power receiving apparatus;
a setting unit configured to, on the basis of transmission power set with the power receiving apparatus, set a first threshold for determining whether or not a foreign object exist, setting a second threshold lower than the first threshold, and set the first threshold and the second threshold so that a difference, between the first threshold and the second threshold, in a case where transmission power is set to a second power greater than a first power is greater than a difference, between the first threshold and the second threshold, in a case where transmission power is set to the first power; and
a determining unit configured to determine that a foreign object exists in a case where the power loss is greater than the first threshold, that a foreign object does not exist in a case where the power loss is less than the second threshold, and that there is a possibility of a foreign object existing in a case where the power loss is between the first threshold and the second threshold.