发明名称 Wireless non-radiative energy transfer
摘要 Described herein are embodiments of a source high-Q resonator, optionally coupled to an energy source, a second high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. A third high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. The source resonator and at least one of the second resonator and third resonator may be coupled to transfer electromagnetic energy from said source resonator to said at least one of the second resonator and third resonator.
申请公布号 US9065286(B2) 申请公布日期 2015.06.23
申请号 US201414302662 申请日期 2014.06.12
申请人 Massachusetts Institute of Technology 发明人 Joannopoulos John D.;Karalis Aristeidis;Soljacic Marin
分类号 H02J5/00;B60L11/18;H01Q9/04;H02J17/00 主分类号 H02J5/00
代理机构 Fish & Richardson P.C. 代理人 Fish & Richardson P.C.
主权项 1. A wireless power system comprising: a source module comprising a source resonator and a power supply coupled to the source resonator to provide power to the source resonator, the source resonator having a resonant frequency ω1, an intrinsic loss rate Γ1, and capable of storing electromagnetic energy with an intrinsic quality factor Q1=ω1/(2Γ1), the source resonator comprising at least one loop of conductive material and further comprising a capacitance; and a portable electronic device having a device module comprising a device resonator and a load coupled to the device resonator to receive power from the device resonator and provide power to the portable electronic device, the device resonator having a resonant frequency ω2, an intrinsic loss rate Γ2, and capable of storing electromagnetic energy with an intrinsic quality factor Q2=ω2/(2Γ2), the device resonator comprising at least one loop of conductive material and further comprising a capacitance, wherein the device module is spaced from the source module and configured to move freely relative to the source module over a range of distances D between the source module and the device module, wherein the source resonator and the device resonator are configured to resonantly and wirelessly couple electromagnetic power from the source resonator to the device resonator using non-radiative electromagnetic induction having an energy transfer rate κ, and wherein the intrinsic loss rates satisfy κ/√{square root over (Γ1Γ2)}>2 over the range of distances D, and wherein f1=ω1/(2π) and f2=ω2/(2π), and f1 and f2, are between about 5 MHz and 380 MHz, and each intrinsic loss rate comprises a resistive component and a radiative component.
地址 Cambridge MA US