POWER SUPPLY SYSTEM AND METHOD OF CONTROLLING POWER SUPPLY SYSTEM
Described herein are embodiments of a power supply system that includes a power supply coil and a power supply-side resonance coil that are provided at a facility, a power receiving coil and a power receiving-side resonance coil that are provided for a mobile unit, a power supply-side information exchange unit, a power receiving-side information exchange unit, and an adjustment unit that adjusts a relative position of the power supply coil with respect to the power supply-side resonance coil and a relative position of the power receiving coil with respect to the power receiving-side resonance coil on the basis of the information exchanged by the information exchange units.
1 . A power supply system comprising:
a power supply coil and a power supply-side resonance coil that are provided at a facility;
a power receiving coil and a power receiving-side resonance coil that are provided for a mobile unit;
a power supply-side information exchange unit;
a power receiving-side information exchange unit; and
an adjustment unit that adjusts a relative position of the power supply coil with respect to the power supply-side resonance coil and a relative position of the power receiving coil with respect to the power receiving-side resonance coil on the basis of the information exchanged by the information exchange units.
2 . The power supply system according to claim 1 , wherein the adjustment unit adjusts a distance between the power supply coil and the power supply-side resonance coil and a distance between the power receiving coil and the power receiving-side resonance coil on the basis of a distance between the power supply-side resonance coil and the power receiving-side resonance coil.
3 . The power supply system according to claim 1 , wherein the adjustment unit adjusts a distance between the power supply coil and the power supply-side resonance coil so as to maximize a power supply efficiency, and adjusts a distance between the power receiving coil and the power receiving-side resonance coil so as to maximize a power supply efficiency.
4 . The power supply system according to claim 3 , wherein the adjustment unit adjusts the power supply-side distance ratio and the power receiving-side distance ratio so as to control a power supply efficiency.
5 . The power supply system according to claim 1 , wherein the adjustment unit adjusts an amount of deviation in coil axis between the power supply coil and the power supply-side resonance coil and an amount of deviation in coil axis between the power receiving coil and the power receiving-side resonance coil on the basis of a distance between the power supply-side resonance coil and the power receiving-side resonance coil.
6 . The power supply system according to claim 1 , wherein the adjustment unit adjusts an angle made between the power supply coil and the power supply-side resonance coil and an angle made between the power receiving coil and the power receiving-side resonance coil on the basis of a distance between the power supply-side resonance coil and the power receiving-side resonance coil.
7 . The power supply system according to claim 1 , wherein the adjustment unit adjusts a coil radius of the power supply coil with respect to the power supply-side resonance coil and a coil radius of the power receiving coil with respect to the power receiving-side resonance coil on the basis of a distance between the power supply-side resonance coil and the power receiving-side resonance coil.
8 . The power supply system according to claim 1 , wherein the adjustment unit adjusts any one of a distance between the power supply coil and the power supply-side resonance coil, an amount of deviation in coil axis between the power supply coil and the power supply-side resonance coil, an angle made between the power supply coil and the power supply-side resonance coil or a coil radius of the power supply coil with respect to the power supply-side resonance coil and adjusts any one of a distance between the power receiving coil and the power receiving-side resonance coil, an amount of deviation in coil axis between the power receiving coil and the power receiving-side resonance coil, an angle made between the power receiving coil and the power receiving-side resonance coil or a coil radius of the power receiving coil with respect to the power receiving-side resonance coil on the basis of a distance between the power supply-side resonance coil and the power receiving-side resonance coil.
9 . A power supply system comprising:
a power supply coil and a power supply-side resonance coil that are provided at a facility;
a power receiving coil and a power receiving-side resonance coil that are provided for a mobile unit;
a power supply efficiency detection unit that detects a power supply efficiency that indicates a transmission efficiency of electric power; and
an adjustment unit that, after the mobile unit stops around the facility, changes a relative position between the power supply coil and the power supply-side resonance coil and a relative position between the power receiving coil and the power receiving-side resonance coil within a predetermined range, and that adjusts the relative positions within the predetermined range so as to substantially maximize the power supply efficiency detected by the power supply efficiency detection unit.
10 . A method of controlling a power supply system that includes a power supply coil and a power supply-side resonance coil that are provided at a facility; and a power receiving coil and a power receiving-side resonance coil that are provided for a mobile unit, the method comprising:
detecting information from the power supply-side resonance coil;
detecting information from the power receiving-side resonance coil; and
adjusting a relative position of the power supply coil with respect to the power supply-side resonance coil and a relative position of the power receiving coil with respect to the power receiving-side resonance coil on the basis of the position of the power supply-side resonance coil and the position of the power receiving-side resonance coil.
11 . A method of controlling a power supply system that includes a power supply coil and a power supply-side resonance coil that are provided at a facility; and a power receiving coil and a power receiving-side resonance coil that are provided for a mobile unit, the method comprising:
detecting a power supply efficiency that indicates a transmission efficiency of electric power; and
after the mobile unit stops around the facility, adjusting a relative position between the power supply coil and the power supply-side resonance coil and a relative position between the power receiving coil and the power receiving-side resonance coil so as to substantially maximize the power supply efficiency.
12 . A wireless power transmission apparatus comprising a high Q magnetic field resonator comprising a material with high dielectric constant and low loss.
13 . The wireless power transmission apparatus of claim 12 , wherein the high Q magnetic field resonator comprises at least one of Titania, Barium tetratitanate, or Lithium tantalite.
14 . The wireless power transmission apparatus of claim 12 , wherein the resonator further comprises at least one capacitive element and at least one inductive element.
15 . The wireless power transmission apparatus of claim 12 , wherein the resonator further comprises a magnetic material.
16 . A wireless power transmission apparatus comprising a high Q magnetic field resonator comprising a material with high effective index.
17 . The wireless power transmission apparatus of claim 16 , wherein the high Q magnetic field resonator comprises at least one of a negative-ε material, a plasmonic material, a metal-like material, a metallo-dielectric material, a plasmono-dielectric material, or a photonic crystal material.
18 . The wireless power transmission apparatus of claim 16 , wherein the resonator further comprises at least one capacitive element and at least one inductive element.
19 . The wireless power transmission apparatus of claim 16 , wherein the resonator further comprises a magnetic material.
20 . A wireless power transmission apparatus comprising a high Q magnetic field resonator comprising a material formed of sub-wavelength structures.
21 . The wireless power transmission apparatus of claim 20 , wherein the high Q magnetic field resonator comprises at least one of a negative-c material, a plasmonic material, a metal-like material, a metallo-dielectric material, a plasmono-dielectric material, or a photonic crystal material.
22 . The wireless power transmission apparatus of claim 20 , wherein the resonator further comprises at least one capacitive element and at least one inductive element.
23 . The wireless power transmission apparatus of claim 20 , wherein the resonator further comprises a magnetic material.
24 . A mobile device having a wireless power transmission apparatus comprising a high Q magnetic field resonator comprising a material with high dielectric constant and low loss.
25 . A mobile device having a wireless power transmission apparatus comprising a high Q magnetic field resonator comprising a material with high effective index.
26 . The mobile device of claim 25 , wherein the high Q magnetic field resonator comprises at least one of a negative-c material, a plasmonic material, a metal-like material, a metallo-dielectric material, a plasmono-dielectric material, or a photonic crystal material.
27 . The mobile device of claim 25 , wherein the resonator further comprises at least one capacitive element and at least one inductive element.
28 . The mobile device of claim 25 , wherein the resonator further comprises a magnetic material.
29 . A mobile device having a wireless power transmission apparatus comprising a high Q magnetic field resonator comprising a material formed of sub-wavelength structures.
30 . The mobile device of claim 29 , wherein the high Q magnetic field resonator comprises at least one of a negative-c material, a plasmonic material, a metal-like material, a metallo-dielectric material, a plasmono-dielectric material, or a photonic crystal material.
31 . The mobile device of claim 29 , wherein the resonator further comprises at least one capacitive element and at least one inductive element.
32 . The mobile device of claim 29 , wherein the resonator further comprises a magnetic material.
33 . A wireless power transmission method comprising:
making a high-Q resonator which includes at least one capacitive element and at least one inductive element and a material, wherein the material comprises as least one of a magnetic material, a negative-c material, a plasmonic material, a metal-like material, a metallo-dielectric material, a plasmono-dielectric material, or a photonic crystal material, and wherein the resonator is configured for wireless power transmission to at least one additional high-Q resonator.