US 12,218,513 B2
Power transfer system, power transfer device, power reception device, and wireless power transfer method
Shinichi Warisawa, Tokyo (JP); Yen Po Wang, Tokyo (JP); and Munemasa Sugimoto, Tokyo (JP)
Assigned to THE UNIVERSITY OF TOKYO, Tokyo (JP)
Appl. No. 18/042,549
Filed by THE UNIVERSITY OF TOKYO, Tokyo (JP)
PCT Filed Oct. 13, 2021, PCT No. PCT/JP2021/037965
§ 371(c)(1), (2) Date Feb. 22, 2023,
PCT Pub. No. WO2022/080434, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 2020-174904 (JP), filed on Oct. 16, 2020.
Prior Publication US 2023/0344273 A1, Oct. 26, 2023
Int. Cl. H02J 50/05 (2016.01); H02J 50/80 (2016.01)
CPC H02J 50/05 (2016.02) [H02J 50/80 (2016.02)] 21 Claims
OG exemplary drawing
 
1. A power transfer system comprising a power transfer device and a power reception device which wirelessly transmit and receive power, respectively,
wherein the power transfer device includes
an AC power source unit, and
a single power transfer element connected to the AC power source unit,
the power reception device includes
a single power reception element electrically coupled to the power transfer element of the power transfer device, and
a power reception circuit connected to the power reception element and outputting power, and
the power reception circuit includes a different potential field that is disposed at a position that is an electric field formed by the power transfer element and at which intensity of the electric field is different from intensity of an electric field formed at a position of the power reception element.