Wireless energy transfer resonator kit

• US 8,487,480 B1
• Filed: 12/16/2009
• Issued: 07/16/2013
• Est. Priority Date: 09/27/2008
• Status: Active Grant

• Current Assignee: WiTricity Corporation
• Original Assignee: WiTricity Corporation
• Inventors: Kesler, Morris P., Karalis, Aristeidis, Kurs, Andre B., Campanella, Andrew J., Fiorello, Ron, Li, Qiang, Kulikowski, Konrad J., Giler, Eric R., Schatz, David A., Hall, Katherine L., Soljacic, Marin
• Primary Examiner(s): KAPLAN, HAL IRA
• Application Number:
  US12/639,718
• Publication Number:
  US 20130200716A1
• Time in Patent Office: 1,308 Days
• Field of Search: 307/104
• US Class Current: 307/104
• CPC Class Codes: B60L 2200/12 Bikes
• CPC Class Codes: B60L 2200/22 Microcars, e.g. golf cars
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2260/28 Four wheel or all wheel drive
• CPC Class Codes: B60L 2260/32 Auto pilot mode
• CPC Class Codes: B60L 50/20 using propulsion power generated by humans or animals
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• 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: B60L 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 55/00 : Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: H01F 38/14 : Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/12 : of the resonant type
• CPC Class Codes: H02J 50/40 : using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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: H03H 7/40 : Automatic matching of load impedance to source impedance
• CPC Class Codes: Y02E 60/00 : Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

Described herein are improved capabilities for a source resonator having a Q-factor Q₁>100 and a characteristic size x₁ coupled to an energy source, and a second resonator having a Q-factor Q₂>100 and a characteristic size x₂ coupled to an energy drain located a distance D from the source resonator, where the source resonator and the second resonator are coupled to exchange energy wirelessly among the source resonator and the second resonator.

Claims

1. A method comprising:

providing a wireless energy transfer kit comprising;

a source comprising a source magnetic resonator for generating oscillating magnetic fields; and

a plurality of wireless energy capture devices each comprising a device magnetic resonator for capturing oscillating magnetic fields generated by said source; and

providing instructions for adapting components for wireless power transfer between said source and said plurality of energy capture devices.

2. The method of claim 1, wherein the source magnetic resonators and device magnetic resonators are high-Q magnetic resonators.

3. The method of claim 2, wherein the quality factors of said source magnetic resonators and said device magnetic resonators are at least 100.

4. The method of claim 3, wherein said wireless energy transfer kit further comprises a power amplifier wherein said power amplifier is configured to generate an oscillating voltage signal of a frequency less than 100 MHz.

5. The method of claim 1, wherein said source further comprises tunable electrical components electrically coupled to said source magnetic resonators.

6. The method of claim 5, wherein each of said plurality of wireless energy capture devices further comprises tunable electrical components electrically coupled to said device magnetic resonators.

7. The method of claim 6, wherein said tunable electrical components of the source and said energy transfer devices include adjustable capacitors.

8. The method of claim 6, wherein said tunable electrical components of the source and said energy capture devices include adjustable inductors.