公开(公告)号：US20180226815A1

公开(公告)日：2018-08-09

申请号：US15742979

申请日：2016-07-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUTO YAMANISHI ,  YOSHIO YUSE

IPC: H02J7/00 ,  H02J50/10 ,  H02J50/40 ,  H02J50/90

CPC classification number: H02J7/0027 ,  H02J7/0047 ,  H02J7/025 ,  H02J50/10 ,  H02J50/40 ,  H02J50/90

Abstract: A wireless charging device includes a plurality of charging coils, a plurality of position detection coils corresponding respectively to the charging coils, and a voltage monitoring circuit for measuring a coil-end voltage of each of the position detection coils. A comparison is performed between a coil-end voltage of a first position detection coil corresponding to a charging coil used for charging and a coil-end voltage of a position detection coil adjacent to the first position detection coil, and, depending on a result of the comparison, a charging coil to be used for charging is switched to an adjacent charging coil.