Power supply system and method of controlling power supply system

Abstract

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.