发明名称 |
POWER FEEDING DEVICE, POWER RECEIVING DEVICE, AND WIRELESS POWER FEED SYSTEM |
摘要 |
A wireless power feed system with high transfer efficiency of electric power is disclosed. The wireless power feed system includes a power feeding device and a power receiving device, wherein the power feeding device includes a first electromagnetic coupling coil that is connected to an AC power source via a directional coupler; a first resonant coil; a switch connected to the opposite ends of the first resonant coil; a control circuit which conducts switching on/off of the switch based on a parameter of an amplitude of a reflective wave detected by the directional coupler; and an analog-digital converter provided between the first electromagnetic coupling coil and the control circuit; and the power receiving device includes a second resonant coil; and a second electromagnetic coupling coil, and wherein the first electromagnetic coupling coil is provided between the first resonant coil and the second resonant.
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申请公布号 |
US2012161529(A1) |
申请公布日期 |
2012.06.28 |
申请号 |
US201113311701 |
申请日期 |
2011.12.06 |
申请人 |
KAMATA KOICHIRO;SATO MISAKO;MAEDA SHUHEI;SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KAMATA KOICHIRO;SATO MISAKO;MAEDA SHUHEI |
分类号 |
H02J17/00 |
主分类号 |
H02J17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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