Multi-band and broadband wireless power transfer through embedded geometric configurations

摘要

A wireless power transmission system includes first source conductor that generates a first electromagnetic near field in response to a power source. A first source element resonates in response to excitation from the first source conductor. A second resonant source element resonates in response to excitation from the first source conductor. A first resonant load element resonates in response to excitation from the first resonant source element. The first resonant load element generates a fluctuating field when resonating. A second resonant load element resonates at the second resonant frequency in response to excitation from the second resonant source element. The second resonant load element generates a fluctuating field when resonating. A first load element generates a first current applied to a first load in response to resonance in the first resonant load element and the second resonant load element.

主权项

1. A wireless power transmission system for transmitting power from at least one power source to at least one load, comprising:
(a) a first source conductor configured to generate a first periodically fluctuating electromagnetic near field in response to an alternating current received from the power source; (b) a first resonant source element, spaced apart from the first source conductor, that is configured to resonate with an oscillating current at a first resonant frequency in response to excitation from the first periodically fluctuating electromagnetic near field generated by the first source conductor; (c) at least one second resonant source element, spaced apart from the first source conductor and the first resonant source element, that is configured to resonate with an oscillating current at a second resonant frequency, different from the first resonant frequency, in response to excitation from the first periodically fluctuating electromagnetic near field generated by the first source conductor; (d) a first resonant load element that is spaced apart from the first resonant source element and the second resonant source element and that is configured to resonate at the first resonant frequency with an oscillating current in response to excitation from the first resonant source element, the first resonant load element configured to generate a periodically fluctuating electromagnetic near field when resonating with the second oscillating current; (e) at least one second resonant load element that is spaced apart from the first resonant source element and the second resonant source element, that is also spaced apart from the first resonant load element, and that is configured to resonate at the second resonant frequency with an oscillating current in response to excitation from the second resonant source element, the second resonant load element configured to generate a periodically fluctuating electromagnetic near field when resonating with the oscillating current; and (f) a first load conductor that is electromagnetically coupled to the first resonant load element and the second resonant load element, but also spaced apart from the first resonant load element and the second resonant load element, and that is configured to generate a first current applied to a first load in response to resonance in the first resonant load element and the second resonant load element.