A vehicle powering wireless receiver for use with a first electromagnetic resonator coupled to a power supply. The wireless receiver includes a load configured to power the drive system of a vehicle using electrical power, and a second electromagnetic resonator adapted to be housed upon the vehicle
A vehicle powering wireless receiver for use with a first electromagnetic resonator coupled to a power supply. The wireless receiver includes a load configured to power the drive system of a vehicle using electrical power, and a second electromagnetic resonator adapted to be housed upon the vehicle and configured to be coupled to the load, wherein the second electromagnetic resonator is configured to be wirelessly coupled to the first electromagnetic resonator to provide resonant, non-radiative wireless power to the second electromagnetic resonator from the first electromagnetic resonator; and wherein the field of at least one of the first electromagnetic resonator and the second electromagnetic resonator is shaped using a conducting surface to avoid a loss-inducing object.
대표청구항▼
1. A vehicle powering wireless power receiver, comprising: a load coupled to a drive system of the vehicle;an electromagnetic resonator configured for attachment to the vehicle and coupled to the load, wherein the electromagnetic resonator is configured to receive power from a resonant, non-radiativ
1. A vehicle powering wireless power receiver, comprising: a load coupled to a drive system of the vehicle;an electromagnetic resonator configured for attachment to the vehicle and coupled to the load, wherein the electromagnetic resonator is configured to receive power from a resonant, non-radiative wireless power source and to deliver power to the load; anda member formed of conducting material and having a surface positioned relative to a loss-inducing object so that a magnitude of a magnetic field generated by at least one of the electromagnetic resonator and the power source is reduced in a spatial region corresponding to the loss-inducing object relative to that in the absence of the member,wherein the member is not resonant with the electromagnetic resonator. 2. The wireless power receiver of claim 1, wherein the electromagnetic resonator is configured to be disposed on an under-carriage of the vehicle. 3. The wireless power receiver of claim 1, wherein the vehicle is an electric vehicle. 4. The wireless power receiver of claim 1, wherein the vehicle is a hybrid vehicle. 5. The wireless power receiver of claim 1, wherein the electromagnetic resonator is moveable relative to the power source while power is transferred from the power source to the power receiver. 6. A power source for wirelessly providing power to a power receiver coupled to a vehicle, the power source comprising: a power supply;an electromagnetic resonator coupled to the power supply and configured to provide resonant, non-radiative wireless power transfer to the wireless power receiver; anda member formed of conducting material and having a surface positioned relative to a loss-inducing object so that a magnitude of a magnetic field generated by at least one of the electromagnetic resonator and the power receiver is reduced in a spatial region corresponding to the loss-inducing object relative to that in the absence of the member,wherein the member is not resonant with the electromagnetic resonator. 7. The power source of claim 6, wherein the electromagnetic resonator is configured to be disposed on an under-carriage of the vehicle. 8. The power source of claim 6, wherein the vehicle is an electric vehicle. 9. The power source of claim 6, wherein the vehicle is a hybrid vehicle. 10. The power source of claim 6, wherein the electromagnetic resonator is moveable relative to the power receiver while power is transferred from the power source to the power receiver. 11. A vehicle wireless power system, comprising: a power supply;a first electromagnetic resonator coupled to the power supply;a load coupled to a drive system of the vehicle; anda second electromagnetic resonator coupled to the load and configured for attachment to the vehicle, wherein the second electromagnetic resonator is configured wirelessly receive resonant, non-radiative wireless power from the first electromagnetic resonator and to deliver power to the load; anda member formed of conducting material and having a surface positioned relative to a loss-inducing object so that a magnitude of a magnetic field generated by at least one of the first and second electromagnetic resonators is reduced in a spatial region corresponding to the loss-inducing object relative to that in the absence of the member,wherein the member is not resonant with the first or second electromagnetic resonators. 12. The wireless power system of claim 11, wherein the second electromagnetic resonator is configured to be disposed on an under-carriage of the vehicle. 13. The wireless power system of claim 11, wherein the vehicle is an electric vehicle. 14. The wireless power system of claim 11, wherein the vehicle is a hybrid vehicle. 15. The wireless power system of claim 11, wherein the second electromagnetic resonator is moveable relative to the first electromagnetic resonator while power is transferred from the first electromagnetic resonator to the second electromagnetic resonator. 16. The wireless power receiver of claim 1, wherein the member is positioned within 10 cm of the loss-inducing object. 17. The wireless power receiver of claim 1, further comprising a second member formed of conducting material and having a surface positioned relative to the loss-inducing object so that a magnitude of a magnetic field generated by at least one of the electromagnetic resonator and the power source is reduced in a spatial region corresponding to the loss-inducing object. 18. The wireless power receiver of claim 17, wherein the two members are positioned on opposite sides of the loss-inducing object. 19. The wireless power receiver of claim 17, wherein the two members at least partially surround the loss-inducing object. 20. The wireless power receiver of claim 1, wherein the member is configured to shape the magnetic field in a spatial region that comprises the loss-inducing object. 21. The wireless power receiver of claim 1, wherein the member is configured to deflect the magnetic field in a spatial region that comprises the loss-inducing object. 22. The wireless power receiver of claim 20, wherein the member is configured to shape the magnetic field so that the magnetic field is oriented tangentially with respect to the surface of the member at a position of the surface. 23. The wireless power receiver of claim 1, wherein the magnetic field has a frequency, and wherein a thickness of the member measured in a direction normal to the surface is larger than a skin depth of the magnetic field at the magnetic field frequency. 24. The wireless power receiver of claim 1, wherein the thickness of the member is 20 microns or more. 25. The wireless power receiver of claim 1, wherein the thickness of the member is 100 microns or more. 26. The power source of claim 6, wherein the member is positioned within 10 cm of the loss-inducing object. 27. The power source of claim 6, further comprising a second member formed of conducting material and having a surface positioned relative to the loss-inducing object so that a magnitude of a magnetic field generated by at least one of the electromagnetic resonator and the power receiver is reduced in a spatial region corresponding to the loss-inducing object. 28. The power source of claim 27, wherein the two members are positioned on opposite sides of the loss-inducing object. 29. The power source of claim 27, wherein the two members at least partially surround the loss-inducing object. 30. The power source of claim 6, wherein the member is configured to shape the magnetic field in a spatial region that comprises the loss-inducing object. 31. The power source of claim 6, wherein the member is configured to deflect the magnetic field in a spatial region that comprises the loss-inducing object. 32. The power source of claim 30, wherein the member is configured to shape the magnetic field so that the magnetic field is oriented tangentially with respect to the surface of the member at a position of the surface. 33. The power source of claim 6, wherein the magnetic field has a frequency, and wherein a thickness of the member measured in a direction normal to the surface is larger than a skin depth of the magnetic field at the magnetic field frequency. 34. The power source of claim 6, wherein the thickness of the member is 20 microns or more. 35. The power source of claim 6, wherein the thickness of the member is 100 microns or more. 36. The wireless power system of claim 11, wherein the member is positioned within 10 cm of the loss-inducing object. 37. The wireless power system of claim 11, further comprising a second member formed of conducting material and having a surface positioned relative to the loss-inducing object so that a magnitude of a magnetic field generated by at least one of the electromagnetic resonator and the power source is reduced in a spatial region corresponding to the loss-inducing object. 38. The wireless power system of claim 37, wherein the two members are positioned on opposite sides of the loss-inducing object. 39. The wireless power system of claim 37, wherein the two members at least partially surround the loss-inducing object. 40. The wireless power system of claim 11, wherein the member is configured to shape the magnetic field in a spatial region that comprises the loss-inducing object. 41. The wireless power system of claim 11, wherein the member is configured to deflect the magnetic field in a spatial region that comprises the loss-inducing object. 42. The wireless power system of claim 40, wherein the member is configured to shape the magnetic field so that the magnetic field is oriented tangentially with respect to the surface of the member at a position of the surface. 43. The wireless power system of claim 11, wherein the magnetic field has a frequency, and wherein a thickness of the member measured in a direction normal to the surface is larger than a skin depth of the magnetic field at the magnetic field frequency. 44. The wireless power system of claim 11, wherein the thickness of the member is 20 microns or more. 45. The wireless power system of claim 11, wherein the thickness of the member is 100 microns or more.
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