Wireless power feeding system

• US 9,270,123 B2
• Filed: 08/23/2011
• Issued: 02/23/2016
• Est. Priority Date: 08/30/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Teramoto, Shigeki, Washiro, Takanori
• Primary Examiner(s): CAVALLARI, DANIEL J
• Application Number:
  US13/215,602
• Publication Number:
  US 20120049646A1
• Time in Patent Office: 1,645 Days
• Field of Search: 307/104
• US Class Current: 1/1
• 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 method, comprising:

transmitting, by a first antenna of a power feeding apparatus, an electric power for wireless power feeding;

carrying out, by the first antenna of the power feeding apparatus, wireless communication;

receiving, by a power receiving apparatus, the electric power fed thereto from said power feeding apparatus;

communicating, by a second antenna of the power receiving apparatus, with said first antenna in a wireless manner; and

controlling, by one or more central processing units of one of said power feeding apparatus and said power receiving apparatus, availability of power consumption in said power receiving apparatus as a secondary side, wherein said availability of power consumption is controlled in accordance with a condition previously set, after said power feeding apparatus and said power receiving apparatus carry out authentication of the power receiving apparatus, wherein said power receiving apparatus serves to feed the electric power thus received to a power source circuit, wherein

the controlling comprises determining, by the one or more central processing units of said power receiving apparatus, a file which is accessible by an electronic apparatus on the secondary side, wherein said file is determined in accordance with the condition previously set, after said power feeding apparatus and said power receiving apparatus carry out the authentication.

2. The wireless power feeding method according to claim 1, wherein

the controlling comprises controlling, by the one or more central processing units of said power feeding apparatus, availability of power feeding for an operation of an electronic apparatus of said power receiving apparatus as the secondary side, wherein said availability of power feeding is controlled in accordance with the condition previously set, after said power feeding apparatus and said power receiving apparatus carry out the authentication.

3. The wireless power feeding method according to claim 1, wherein

the controlling comprises controlling, by the one or more central processing units of said power feeding apparatus, availability of power reception for an operation of an electronic apparatus of said power receiving apparatus on the secondary side, wherein said availability of power reception is controlled in accordance with the condition previously set, after said power feeding apparatus and said power receiving apparatus carry out the authentication.

4. The wireless power feeding method according to claim 1, wherein

the controlling comprises controlling, by the one or more central processing units of said power receiving apparatus, activation of an electronic apparatus of said power receiving apparatus on the secondary side, wherein said activation is controlled in accordance with the condition previously set, after said power feeding apparatus and said power receiving apparatus carry out the authentication.

5. The wireless power feeding method according to claim 1, wherein

the controlling comprises limiting, by the one or more central processing units of said power receiving apparatus, an operation of an electronic apparatus on the secondary side, wherein said operation is limited in accordance with the condition previously set, after said power feeding apparatus and said power receiving apparatus carry out the authentication.

6. The wireless power feeding method according to claim 1, wherein

the condition previously set comprises an identification (ID) of said power feeding apparatus as a primary side, an identification (ID) of said power receiving apparatus as the secondary side, available time for the power consumption, and available number of times for the power consumption.

7. The wireless power feeding method according to claim 1, wherein

said power feeding apparatus and said power receiving apparatus carry out the wireless communication and the wireless power feeding in parallel with each other.

8. The wireless power feeding method according to claim 1, wherein

a capacitor is connected to a supply path of the received electric power to said power source circuit.

9. The wireless power feeding method according to claim 1, further comprising:

detecting, by the power feeding apparatus, whether said power receiving apparatus is moved outside a power feeding range of said power feeding apparatus and issuing a warning, when said power receiving apparatus on the secondary side is moved outside the power feeding range in a middle of the wireless power feeding.

10. The wireless power feeding method according to claim 1, further comprising:

detecting, by said power receiving apparatus, whether said power receiving apparatus is moved outside a power feeding range of said power feeding apparatus and issuing a warning, when said power receiving apparatus on the secondary side is moved outside the power feeding range in a middle of the wireless power feeding.

11. The wireless power feeding method according to claim 1, wherein

in a case where the secondary side is moved outside a power feeding range of a primary side in a middle of the wireless power feeding, said power receiving apparatus becomes inoperable.

12. The wireless power feeding method according to claim 1, further comprising:

supplying, along a first path of said power receiving apparatus, the received electric power directly from a regulator to said power source circuit,

supplying along a second path of said power receiving apparatus, the received electric power from said regulator to said power source circuit through a battery chargeable with the received electric power, and

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

13. The wireless power feeding method according to claim 1, further comprising:

providing a buffer zone on an edge portion side of a power feeding range of the electric power fed by said power feeding apparatus, wherein the buffer zone becomes a boundary with an area outside of the power feeding range,

disposing a first power transmitting system, in an area except for the buffer zone of the power feeding range, and

disposing a second power transmitting system in the buffer zone,

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

14. The wireless power feeding method according to claim 13, further comprising:

reporting, by said power receiving apparatus, that said power receiving apparatus enters the buffer zone, when a voltage of the received electric power monitored by said power receiving apparatus becomes equal to or lower than a given voltage previously set, and

turning OFF a power source when said power receiving apparatus is moved to an area outside the buffer zone.

15. A power feeding method, comprising:

transmitting, by a first antenna a power feeding apparatus, an electric power to a power receiving apparatus for wireless power feeding;

carrying out, by the first antenna of the power feeding apparatus, wireless communication with a second antenna of the power receiving apparatus;

controlling, by one or more central processing units of the power feeding apparatus, availability of power consumption in said power receiving apparatus, wherein said availability of power consumption is controlled in accordance with a condition previously set, after said power feeding apparatus and said power receiving apparatus carry out authentication of the power receiving apparatus; and

determining, by the one or more central processing units of the power feeding apparatus, a file which is accessible by an electronic apparatus of said power receiving apparatus, wherein said file is determined in accordance with the condition previously set, after said power feeding apparatus and said power receiving apparatus carry out the authentication.

16. The power feeding method according to claim 15, wherein

the controlling comprises controlling, by the one or more central processing units of the power feeding apparatus, activation of an electronic apparatus of said power receiving apparatus, wherein said activation is controlled in accordance with the condition previously set.

17. A power receiving method, comprising:

receiving, by a first antenna of a power receiving apparatus, electric power from a power feeding apparatus;

communicating, by the first antenna of the power receiving apparatus, with a second antenna of the power feeding apparatus in a wireless manner; and

controlling, by one or more central processing units of the power receiving apparatus, availability of power consumption in said power receiving apparatus, wherein said availability of power consumption is controlled in accordance with a condition previously set, after said power feeding apparatus and said power receiving apparatus carry out authentication of the power receiving apparatus, wherein

the condition previously set comprises an identification (ID) of said power feeding apparatus as a primary side, an identification (ID) of said power receiving apparatus as a secondary side, available time for the power consumption, and available number of times for the power consumption.

18. The power receiving method according to claim 17, further comprising

feeding, by said power receiving apparatus, the electric power thus received to a power source circuit.