US 12,444,997 B2
Contactless electric power transmission system
Jin Katsuya, Wako (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 21, 2024, as Appl. No. 18/582,711.
Claims priority of application No. 2023-044296 (JP), filed on Mar. 20, 2023.
Prior Publication US 2024/0322612 A1, Sep. 26, 2024
Int. Cl. H02J 50/80 (2016.01); H02J 50/12 (2016.01); B60L 53/122 (2019.01)
CPC H02J 50/80 (2016.02) [H02J 50/12 (2016.02); B60L 53/122 (2019.02)] 8 Claims
OG exemplary drawing
 
1. A contactless electric power transmission system, comprising:
an electric power reception device having an electric power reception side coil that receives electric power transmitted in a contactless manner between the electric power reception side coil and an electric power transmission side coil of an electric power transmission device; and
a control device that controls the electric power reception device,
wherein the control device sets, in a coupling zone in which a coupling degree between the electric power transmission side coil and the electric power reception side coil is equal to or more than a predetermined degree, a communication zone in which the coupling degree is relatively small, and an electric power transmission zone in which the coupling degree is relatively large,
transmits information relating to electric power transmission in the electric power transmission zone from the electric power reception device to the electric power transmission device by communication between the electric power transmission device and the electric power reception device when the electric power reception side coil is present in a foremost communication zone of the coupling zone,
sets the information relating to the electric power transmission to have at least key information and information about a request frequency of the electric power transmission, and
causes the electric power transmission device to perform, in the electric power transmission zone, the electric power transmission at the request frequency in response to verification of the key information by transmitting the information relating to the electric power transmission from the electric power reception device to the electric power transmission device in the foremost communication zone.