公开(公告)号：US20190199132A1

公开(公告)日：2019-06-27

申请号：US14425200

申请日：2014-02-24

申请人： Yuki OTA ,  Tetsuya TAKURA ,  Fumihiro SATO ,  Hidetoshi MATSUKI ,  Tadayuki SATO ,  Akifusa YUYAMA ,  Shu SASAKI ,  Toshiaki KATO

发明人： Yuki OTA ,  Tetsuya TAKURA ,  Fumihiro SATO ,  Hidetoshi MATSUKI ,  Tadayuki SATO ,  Akifusa YUYAMA ,  Shu SASAKI ,  Toshiaki KATO

IPC分类号： H02J50/10 ,  H02J50/40 ,  H02J7/02 ,  H01F38/14 ,  H01F27/28

CPC分类号： H02J50/10 ,  H01F27/28 ,  H01F38/14 ,  H02J7/025 ,  H02J50/40

摘要： In a power transmission system for transmitting electric power from the primary side power feeding coil to the secondary side power receiving coil without their mutual contact and using electromagnetic induction, the power coils on each of the primary and secondary sides include a pair of planar spiral coils which are shaped in the form of a figure 8 and connected differentially to power supply, and each of the spiral coils is D-shaped having a semicircular portion and a linear portion combined together, the two spiral coils having their linear portions laid one on the other to form a planar figure-8 coil. Plates of soft magnetic material 4 and 41 are disposed each on a side of the power coil on one of the primary and secondary sides which is opposite to the side that faces the power coil on the other of the primary and secondary sides.