WIRELESS POWERING AND CHARGING STATION

• US 20100277005A1
• Filed: 07/16/2010
• Published: 11/04/2010
• Est. Priority Date: 07/12/2005
• Status: Abandoned Application

• Current Assignee: Massachusetts Institute of Technology
• Original Assignee: Massachusetts Institute of Technology
• Inventors: Karalis, Aristeidis, Soljacic, Marin, Moffatt, Robert, Kurs, Andre B., Joannopoulos, John D., Fisher, Peter H.
• Application Number:
  US12/837,675
• Publication Number:
  US 20100277005A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/04 Resonant antennas
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y10T 29/4902 Electromagnet, transformer or inductor

Abstract

Described herein are embodiments of a system for receiving wireless power from a high-Q resonator that include a base for a portable device, having surfaces that are shaped to mechanically hold to outer surfaces of a portable device, and having a high-Q magnetic resonator therein, said resonator formed of a coil portion in series with a capacitive portion, said resonator having an LC value which is tuned to a specified frequency.

Claims

1. A system for receiving wireless power from a high-Q resonator, comprising:

a base for a portable device, having surfaces that are shaped to mechanically hold to outer surfaces of a portable device, and having a high-Q magnetic resonator therein, said resonator formed of a coil portion in series with a capacitive portion, said resonator having an LC value which is tuned to a specified frequency.

2. A system as in claim 1, wherein said resonator is integrated in a location which defines substantially a perimeter of the portable device.

3. A system as in claim 2, wherein said perimeter of the base is substantially disk shaped.

4. A system as in claim 2, wherein said inner surfaces are sized to hold a portable phone.

5. A system as in claim 1, further comprising a magnetic generator, wherein said magnetic generator produces magnetic energy at a frequency that is resonant with a frequency defined by said resonator and said base.

6. A system as in claim 1, wherein said magnetically resonant resonator includes a coil in series with a capacitor.

7. A system as in claim 1, further comprising electrical contacts which connect to the portable device.

8. A system as in claim 6, wherein said magnetically resonant resonator also includes a coupling loop, electrically separate from the coil and capacitor, wherein said coil and capacitor are not electrically connected to said contacts.

19. A system as in claim 5, wherein said resonator includes a coil in series with a capacitor.

9. A system, comprising:

a high-Q generator of magnetic energy, generating at a first frequency, said generator having an inductive coil and a capacitor with an LC value that is resonant with said first frequency,

a base, having surfaces that are shaped to mechanically hold outer surfaces of a portable device, and having a magnetically resonant resonator therein, said resonator formed of an inductive coil portion in series with a capacitive portion, said resonator having an LC value which is resonant with said first frequency.

10. A system as in claim 9, wherein said resonator is integrated in a location which defines substantially a perimeter of the portable device.

11. A system as in claim 10, wherein said perimeter of the base is substantially disk shaped.

12. A system as in claim 9, wherein said inner surfaces are sized to hold a portable phone.

13. A system as in claim 9, further comprising electrical contacts which connect to the portable device.

14. A system as in claim 13, wherein said magnetically resonant resonator also includes a coupling loop, electrically separate from the coil and capacitor, wherein said coil and capacitor are not electrically connected to said contacts.

15. A system comprising:

a portable device, having a housing with an outer shape and surfaces, said portable device having a high-Q receiver resonator for receiving wirelessly transmitted power from another high-Q magnetic resonator, said power received to operate at least one circuit within the portable device, wherein said receiver includes a resonator formed of a coil portion that includes a ferrite.

16. A system as in claim 15, wherein said resonator is integrated in a location which defines at least a portion of a perimeter of the portable device.

17. A system as in claim 15, wherein said inner surfaces are sized to hold a portable phone.

18. A system as in claim 15, further comprising a magnetic generator, wherein said magnetic generator produces magnetic energy at a frequency that is resonant with a frequency resonant with said resonator.

20. A system comprising:

a portable device, having a housing with an outer shape, said portable device having a high-Q resonator receiver for receiving wirelessly transmitted power from another high-Q magnetic resonator, said power received to operate at least one circuit within the portable device, wherein said receiver includes a resonator formed of a coil portion that includes ferrite that is shaped to fit within the outer shape of the portable device.