WIRELESS POWER FEEDING SYSTEM

• US 20120049646A1
• Filed: 08/23/2011
• Published: 03/01/2012
• Est. Priority Date: 08/30/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Washiro, Takanori, Teramoto, Shigeki
• Granted Patent: US 9,270,123 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2270/34 of parts
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• 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 53/24 Using the vehicle's propulsion converter for charging
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• 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: H02J 7/0045 concerning the insertion or the connection of the batteries
• 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: Y02T 90/16 Information or communication technologies improving the operation of 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 30/14 Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

Disclosed herein is a wireless power feeding system, including: a power feeding apparatus including a wireless power transmitting grid transmitting an electric power for wireless power feeding, and a first wireless communication grid carrying out wireless communication; and a power receiving apparatus including a wireless power receiving grid receiving the electric power fed thereto from the power feeding apparatus, and a second wireless communication grid adapted to communicate with the first wireless communication system in a wireless manner, the power receiving apparatus serving to feed the electric power thus received to a power source circuit. In the wireless power feeding system one of the power feeding apparatus and the power receiving apparatus includes a control grid controlling availability of power consumption in the power receiving apparatus as a secondary side in accordance with a condition previously set after the power feeding apparatus and the power receiving apparatus carry out authentication.

Claims

1. A wireless power feeding system, comprising:

a power feeding apparatus including

a wireless power transmitting grid transmitting an electric power for wireless power feeding, and

a first wireless communication grid carrying out wireless communication; and

a power receiving apparatus including

a wireless power receiving grid receiving the electric power fed thereto from said power feeding apparatus, and

a second wireless communication grid adapted to communicate with said first wireless communication system in a wireless manner,

said power receiving apparatus serving to feed the electric power thus received to a power source circuit,

wherein one of said power feeding apparatus and said power receiving apparatus includes

a control grid controlling availability of power consumption in said power receiving apparatus as a secondary side in accordance with a condition previously set after said power feeding apparatus and said power receiving apparatus carry out authentication.

2. The wireless power feeding system according to claim 1, wherein after said power feeding apparatus and said power receiving apparatus carry out the authentication, the control grid of said power feeding apparatus controls the availability of the power feeding for an operation of an electronic apparatus of said power receiving apparatus as the secondary side in accordance with the condition previously set.

3. The wireless power feeding system according to claim 1, wherein after said power feeding apparatus and said power receiving apparatus carry out the authentication, the control grid of said power feeding apparatus controls the availability of the power reception for an operation of an electronic apparatus of said power receiving apparatus on the secondary side in accordance with the condition previously set.

4. The wireless power feeding system according to claim 1, wherein after said power feeding apparatus and said power receiving apparatus carry out the authentication, the control grid of said power receiving apparatus controls the availability of activation for an operation of an electronic apparatus of said power receiving apparatus on the secondary side in accordance with the condition previously set.

5. The wireless power feeding system according to claim 1, wherein after said power feeding apparatus and said power receiving apparatus carry out the authentication, a service which is utilizable by an electronic apparatus on the secondary side is determined in accordance with the condition previously set.

6. The wireless power feeding system according to claim 1, wherein after said power feeding apparatus and said power receiving apparatus carry out the authentication, a function which is utilizable by an electronic apparatus on the secondary side is determined in accordance with the condition previously set.

7. The wireless power feeding system according to claim 1, wherein an attribute of said power feeding apparatus as the primary side, an attribute of said power receiving apparatus as the secondary side, available time, and the available number of times are contained in the condition previously set.

8. The wireless power feeding system according to claim 1, wherein said power feeding apparatus and said power receiving apparatus carry out a wireless communication by a wireless communication system, and wireless power feeding in parallel with each other.

9. The wireless power feeding system according to claim 1, wherein a capacitor is connected to a supply path of the received electric power to said power source circuit.

10. The wireless power feeding system according to claim 1, wherein when said power receiving apparatus on the secondary side is moved outside a power feeding range in a middle of the power feeding, said power feeding apparatus executes processing for detecting that said power receiving apparatus is moved outside the power feeding range and issuing a warning.

11. The wireless power feeding system according to claim 1, wherein when said power receiving apparatus on the secondary side is moved outside a power feeding range in a middle of the power feeding, said power receiving apparatus executes processing detecting that said power receiving apparatus is moved outside the power feeding range and issuing a warning.

12. The wireless power feeding system according to claim 10, wherein in a case where the secondary side is moved outside the power feeding range of the primary side in the middle of the power feeding, even when the secondary side enters the power feeding range of the primary side, said secondary side power receiving apparatus becomes inoperable.

13. The wireless power feeding system according to claim 1, wherein said power receiving apparatus includes

a first supply path along which the received electric power is directly supplied to said power source circuit, and

a second supply path along which the received electric power is supplied to said power source circuit through a battery chargeable with the received electric power;

and when said power receiving apparatus is moved inside a power feeding range of said power feeding apparatus, said supply path is switched from said second supply path over to said first supply path.

14. The wireless power feeding system according to claim 1, wherein a power feeding range of the electric power fed by said power feeding apparatus is set:

a buffer zone is provided on an edge portion side becoming a boundary with an outside of the power feeding range in the power feeding area;

a first power transmitting system is disposed in an area except for the buffer zone of the power feeding range area, and a second power transmitting system is disposed in the buffer zone; and

a transmission electric power output from said second power transmitting system is smaller than that from said first power transmitting system, and is set to a value enough to operate an apparatus on the power receiving side.

15. The wireless power feeding system according to claim 14, wherein when a voltage of the received electric power is monitored by said power receiving apparatus and the monitored voltage becomes equal to or lower than a given voltage previously set, said power receiving apparatus reports that said power receiving apparatus enters the buffer zone and a power source is turned OFF when said power receiving apparatus is moved to an outside a little or more.