Electricity supply device and electricity reception device

• US 10,279,692 B2
• Filed: 12/04/2017
• Issued: 05/07/2019
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: Panasonic Automotive Systems Company of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Asaoka, Noriaki, Ohashi, Osamu, Nishio, Tsuyoshi, Koizumi, Masayoshi
• Primary Examiner(s): Poos, John W
• Application Number:
  US15/830,157
• Publication Number:
  US 20180086214A1
• Time in Patent Office: 519 Days
• Field of Search: 307104
• CPC Class Codes: B60L 50/12 using AC generators and DC motors
• 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 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• 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 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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: 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 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

The electricity supply device (100) supplies electricity using electromagnetic force and opposes an external electricity reception coil (153a). An electricity supply coil (102a) has a hollow section (102b), and has a spiral shape. A reader (103) has an antenna disposed in the projected space resulting from projecting the hollow section (102b) in the central axial direction of the electricity supply coil (102a) and at a position more separated from the electricity reception coil (153a) than the opposing surface that opposes the electricity reception coil (153a) and is of the electricity supply coil (102a), and ID data transmitted by an RF tag (154) installed proximally to the electricity reception coil (153a) is received and detected by the antenna. An electricity-supply-side control unit (104) determines the presence/absence of an electricity reception coil (153a) on the basis of the ID data detected by the reader (103).

Claims

1. A power supply apparatus comprising:

a power supply coil having a ring shape and configured to transmit power to a power receiving coil located externally; and

at least one antenna configured to receive a signal, wherein;

the power supply apparatus transmits the power to the power receiving coil based on the signal received by the at least one antenna,

the at least one antenna overlaps a hollow portion of the ring shape of the power supply coil in a central axis direction of the power supply coil which is controlled to transmit the power based on the signal received by the at least one antenna, and

at least a part of the at least one antenna is located out of the hollow portion of the ring shape of the power supply coil which is controlled to transmit the power based on the signal received by the at least one antenna.

2. The power supply apparatus according to claim 1, wherein

the power supply coil is configured to face the power receiving coil.

3. The power supply apparatus according to claim 1, wherein

the at least one antenna is capable of receiving the signal as an electromagnetic wave.

4. The power supply apparatus according to claim 3, wherein

the electromagnetic wave is transmitted by a radio tag.

5. The power supply apparatus according to claim 4, wherein

the radio tag is located near the power receiving coil.

6. The power supply apparatus according to claim 1, further comprising

a control section which controls to transmit the power based on the signal received by the at least one antenna.

7. The power supply apparatus according to claim 6, wherein

the control section determines the presence or absence of the power receiving coil based on the signal.

8. The power supply apparatus according to claim 1, wherein

the power supply coil is a spiral coil.

9. The power supply apparatus according to claim 6, wherein

the control section permits the power supply coil to transmit power to the power receiving coil when the control section determines the presence of the power receiving coil.

10. The power supply apparatus according to claim 1, further comprising

an electromagnetic wave absorber on an inner wall of the hollow portion of the ring shape of the power supply coil.

11. The power supply apparatus according to claim 1, further comprising

a magnetic body disposed between the power supply coil and the at least one antenna.

12. The power supply apparatus according to claim 1, which faces the power receiving coil mounted in a vehicle, and which supplies power using an electromagnetic force.

13. A power transmitting system comprising a power supply apparatus and a power receiving apparatus,

wherein the power supply apparatus comprises

a power supply coil having a ring shape and configured to transmit power to a power receiving coil located externally;

and

at least one antenna configured to receive a signal, wherein

the power supply apparatus transmits the power to the power receiving coil based on the signal received by the at least one antenna,

the at least one antenna overlaps a hollow portion of the ring shape of the power supply coil in a central axis direction of the power supply coil which is controlled to transmit the power based on the signal received by the at least one antenna,

at least a part of the at least one antenna is located out of the hollow portion of the ring shape of the power supply coil which is controlled to transmit the power based on the signal received by the at least one antenna.

14. The power transmitting system according to claim 13,

wherein the power receiving apparatus comprises:

a power receiving coil having a ring shape; and

a radio tag disposed inside a hollow portion of the ring shape of the power receiving coil.

15. The power transmitting system according to claim 14, further comprising

an electromagnetic wave absorber on an inner wall of the hollow portion of the ring shape of the power receiving coil.

16. The power transmitting system according to claim 14, wherein,

the at least one antenna is disposed on a central axis of the ring shape of the power supply coil, and

the radio tag is disposed on a central axis of the ring shape of the power receiving coil.