公开(公告)号：US10177599B2

公开(公告)日：2019-01-08

申请号：US14438621

申请日：2013-10-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hideaki Abe ,  Toyohiko Tsujimoto ,  Mamoru Ozaki ,  Hiroshi Kohara ,  Toshihiro Akiyama ,  Akira Yabuta

IPC: H02J50/00 ,  H02J50/10 ,  H02J50/60 ,  H01F38/14 ,  H02J5/00 ,  H02J7/00 ,  H02J17/00 ,  H02J50/90

Abstract: A contactless power feeding system comprises a power feeding device and a movable device. The movable device is installed on a power feeding case of the power feeding device, and a liquid crystal TV (E) is installed on the movable device. The liquid crystal TV (E) can be arranged at a desired position on a wall (W) in a room (R) by moving the movable device along the power feeding case. The liquid crystal TV (E) can be arranged at a desired height by moving the liquid crystal TV (E) in the axial direction of a guide pipe provided on a power receiving case. The liquid crystal TV (E) can be directed in a desired direction by rotating the liquid crystal TV (E) around the guide pipe. The contactless power feeding system feeds power to the liquid crystal TV (E) via the power feeding device and the movable device.

公开(公告)号：US09831686B2

公开(公告)日：2017-11-28

申请号：US14770598

申请日：2014-02-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Kohara ,  Mamoru Ozaki ,  Toyohiko Tsujimoto

IPC: H01F27/42 ,  H02J5/00 ,  H02J7/02 ,  H02J50/12 ,  H02J50/90 ,  H02J50/40

CPC classification number: H02J50/80 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J50/90

Abstract: A wireless power transmission device includes a detection coil and a capacitor that configure a resonance circuit. An oscillation circuit generates high-frequency current corresponding to a detection frequency for performing presence detection of an electric appliance and metal. A presence detection circuit performs presence detection of the electric appliance and the metal based on an output voltage obtained by exciting the detection coil with the high-frequency current having the detection frequency. A detection condition changing circuit performs an initial value setting mode that changes a detection condition of the presence detection circuit in accordance with a resonance characteristic. The detection condition changing circuit includes a detection frequency changing circuit that changes the detection frequency in accordance with the resonance characteristic.