公开(公告)号：EP3696940A1

公开(公告)日：2020-08-19

申请号：EP20154626.4

申请日：2020-01-30

申请人： Hitachi, Ltd.

发明人： ICHIKAWA, Katsuei ,  SUGIYAMA, Yoshikazu ,  YAHAGI, Yasuo ,  SHIROSUGI, Takatoshi

IPC分类号： H02J50/00 ,  H02J50/40 ,  H02J50/50 ,  H01F38/14 ,  H02J50/12

摘要： Provided is a power reception unit that receives electric power transmitted from a power transmission unit, in which variation in power transmission efficiency is prevented. The power reception unit includes: a plurality of power reception coils that are configured to receive electric power by magnetic coupling with a power transmission coil of the power transmission unit; and a load coil that is disposed close to the power reception coils, in which a plurality of series resonant circuits that resonate at a frequency equal to a power transmission frequency are constituted by each of the plurality of power reception coils and a resonance capacity, the plurality of series resonant circuits are connected in series in a loop shape, and the load coil extracts received electric power from the series resonant circuits.