公开(公告)号：US20160013658A1

公开(公告)日：2016-01-14

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: H02J5/00

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.

Abstract translation: 无线电力传输装置包括检测线圈和配置谐振电路的电容器。 振荡电路产生对应于用于进行电器和金属的存在检测的检测频率的高频电流。 存在检测电路基于通过利用具有检测频率的高频电流对检测线圈进行激励而获得的输出电压来执行电器和金属的存在检测。 检测条件改变电路执行根据谐振特性改变存在检测电路的检测条件的初始值设置模式。 检测条件改变电路包括根据谐振特性改变检测频率的检测频率改变电路。