| 发明名称 | Wireless power transmission system | ||
| 摘要 | To improve power transmission efficiency in wireless power feeding by using a magnetic body. A wireless power transmission system 100 feeds power by wireless from a feeding coil L2 to a receiving coil L3 based on a magnetic-field resonance phenomenon between the feeding coil L2 and receiving coil L3. A transmission control circuit 200 supplies AC power to the feeding coil L2 at a drive frequency so as to make the feeding coil L2 feed the AC power to the receiving coil L3. A magnetic body F is disposed between the feeding coil L2 and receiving coil L3. The magnetic body F is disposed in a space between coil surfaces of the feeding coil L2 and receiving coil L3. | ||
| 申请公布号 | US9412513(B2) | 申请公布日期 | 2016.08.09 |
| 申请号 | US201313853831 | 申请日期 | 2013.03.29 |
| 申请人 | TDK CORPORATION | 发明人 | Saitoh Yoshihiro |
| 分类号 | H01F38/14;H02J5/00 | 主分类号 | H01F38/14 |
| 代理机构 | McDermott Will Emery LLP | 代理人 | McDermott Will Emery LLP |
| 主权项 | 1. A wireless power transmission system for feeding power by wireless from a feeding coil to a receiving coil, comprising: the feeding coil; a transmission control circuit that supplies AC power to the feeding coil at a drive frequency so as to make the feeding coil feed the AC power to the receiving coil; the receiving coil; a loading circuit that receives power from the receiving coil; and a magnetic body that is disposed between the feeding coil and receiving coil, the magnetic body being disposed inside a space between coil surfaces of the feeding coil and receiving coil, wherein the magnetic body is disposed so that a coil axis connecting a central axis of the feeding coil and a central axis of the receiving coil passes through the magnetic body, and wherein the magnetic body is configured such that, during power transmission from the feeding coil to the receiving coil, the magnetic body does not move. | ||
| 地址 | Tokyo JP | ||