US 11,984,733 B2
Power feeding system during travelling
Hayato Sumiya, Kariya (JP); Eisuke Takahashi, Kariya (JP); Nobuhisa Yamaguchi, Kariya (JP); and Masaya Takahashi, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jan. 20, 2022, as Appl. No. 17/580,380.
Application 17/580,380 is a continuation of application No. PCT/JP2020/027803, filed on Jul. 17, 2020.
Claims priority of application No. 2019-137401 (JP), filed on Jul. 26, 2019.
Prior Publication US 2022/0149663 A1, May 12, 2022
Int. Cl. H02J 50/12 (2016.01); B60L 50/53 (2019.01); H02J 50/50 (2016.01); H04B 5/00 (2006.01)
CPC H02J 50/12 (2016.02) [B60L 50/53 (2019.02); H02J 50/50 (2016.02); H04B 5/0037 (2013.01); H04B 5/0081 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dynamic wireless power transfer system comprising:
a power transmission coil that is provided in a road;
a power transmission circuit that supplies electric power to the power transmission coil;
a power reception coil that is provided in a vehicle;
a power reception circuit that is connected to the power reception coil; and
a relay circuit that (i) is provided in a tire of the vehicle, (ii) includes at least two relay coils that are connected in series and arranged at positions that are different from each other in a circumferential direction of the tire, and (iii) transfers electric power from the power transmission coil to the power reception coil by first and second relay coils of the at least two relay coils, the first relay coil opposing the power transmission coil and the second relay coil opposing the power reception coil, wherein
a resonance frequency of the relay circuit is a frequency that is within a fixed range that is centered on an applied frequency of an alternating-current voltage that is applied to the power transmission coil.