公开(公告)号：EP4005851A1

公开(公告)日：2022-06-01

申请号：EP20847945.1

申请日：2020-07-17

申请人： Denso Corporation

发明人： SUMIYA Hayato ,  TAKAHASHI Eisuke ,  YAMAGUCHI Nobuhisa ,  TAKAHASHI Masaya

IPC分类号： B60L5/00 ,  H02J50/12 ,  H02J50/50 ,  H02J7/00 ,  B60L50/53 ,  B60L53/122 ,  B60M7/00

摘要： A dynamic wireless power transfer system (500) includes: a power transmission coil (40) that is provided in a road (105); a power transmission circuit (30) that supplies electric power to the power transmission coil; a power reception coil (240f, 240r) that is provided in a vehicle (202); a power reception circuit (230) that is connected to the power reception coil; and a relay circuit (70) that is provided in a tire of the vehicle, includes at least two relay coils that are connected in series, and transfers electric power from the power transmission coil to the power reception coil by one (71a1) relay coil of the two relay coils opposing the power transmission coil and the other (71a2) relay coil opposing the power reception coil. 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.