US 12,434,580 B2
Wireless power transfer system
Toshiya Hashimoto, Miyoshi (JP); Masato Maemura, Nisshin (JP); Shogo Tsuge, Fuji (JP); and Ryosuke Ikemura, Susono (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Dec. 19, 2023, as Appl. No. 18/544,684.
Claims priority of application No. 2023-012749 (JP), filed on Jan. 31, 2023.
Prior Publication US 2024/0253482 A1, Aug. 1, 2024
Int. Cl. B60L 53/122 (2019.01); B60L 53/126 (2019.01); B60L 53/30 (2019.01); B60L 53/66 (2019.01); B60L 53/68 (2019.01)
CPC B60L 53/122 (2019.02) [B60L 53/126 (2019.02); B60L 53/32 (2019.02); B60L 53/66 (2019.02); B60L 53/68 (2019.02); B60L 2240/12 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A wireless power transfer system that wirelessly transfers power from a supply device to a vehicle, the supply device including a primary device that transfers power and being provided on a road, the vehicle being equipped with a power reception device that includes a secondary device and traveling on the road by the power received from the supply device,
wherein the supply device further includes:
a processor, and
the processor:
acquires vehicle speed information indicating at least a speed of the vehicle;
sets a time for confirming magnetic coupling between the primary device and the secondary device based on the vehicle speed information;
performs a pairing check for confirming pairing between the primary device and the secondary device in a case where the magnetic coupling between the primary device and the secondary device is not normal within the time;
performs setting of the time based on the vehicle speed information, such that the higher the vehicle speed, the shorter the time to be set, and the lower the vehicle speed, the shorter the time to be set;
acquires coil type information indicating a coil type of the power reception device and attachment position information indicating an attachment position of a coil of the power reception device; and
sets the time based on the vehicle speed information, the coil type information, and the attachment position information; and
wherein the vehicle includes: a communication device that transmits the coil type information and the attachment position information to the supply device by short-range wireless communication, and wherein
the processor further performs the setting of the time based on the coil type information and the attachment position information, such that the time is set to be short when the power reception device and the communication device are integrated to each other, and the time is set to be long when the power reception device and the communication device are separate from each other.