NON-CONTACT POWER RECEPTION DEVICE AND VEHICLE INCLUDING THE SAME, NON-CONTACT POWER TRANSMISSION DEVICE, AND NON-CONTACT POWER TRANSFER SYSTEM

• US 20140091641A1
• Filed: 06/03/2011
• Published: 04/03/2014
• Est. Priority Date: 06/03/2011
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ichikawa, Shinji
• Application Number:
  US14/119,070
• Publication Number:
  US 20140091641A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2210/10 DC to DC 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 2240/527 Voltage
• CPC Class Codes: B60L 2240/529 Current
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• 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: 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: 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

AC power having a power transmission frequency is transmitted from a resonant coil in a power transmission device to a resonant coil in a power reception device. Moreover, communication is conducted between a communication device in the power transmission device and a communication device in the power reception device through wireless radio wave having a communication frequency. The power transmission frequency and the communication frequency are determined in such a way that the relationship between the power transmission frequency and the communication frequency is a non-integer multiple.

Claims

1. A non-contact power reception device configured to receive in a non-contact manner power transmitted from a power transmission device, comprising:

a power reception unit configured to receive in a non-contact manner AC power transmitted from said power transmission device at a first frequency; and

a communication device configured to conduct wireless communication with said power transmission device through radio wave having a second frequency,

said first frequency and said second frequency being determined in such a way that the relationship between said first frequency and said second frequency is a non-integer multiple.

2. The non-contact power reception device according to claim 1, wherein said power reception unit receives in a non-contact manner said AC power transmitted from a power transmission unit in said power transmission device through resonance with said power transmission unit via an electromagnetic field.

3. The non-contact power reception device according to claim 1, wherein said second frequency is determined to be higher than said first frequency.

4. The non-contact power reception device according to claim 1, wherein said first frequency is determined on the basis of a transfer status of said AC power, and said second frequency is determined in such a way that the relationship between the determined first frequency and said second frequency is a non-integer multiple.

5. The non-contact power reception device according to claim 1, wherein said second frequency is determined on the basis of a communication status with said power transmission device, and said first frequency is determined on the basis of a transfer status of said AC power in such a range that the relationship between the determined second frequency and said first frequency is a non-integer multiple.

6. The non-contact power reception device according to claim 1, further comprising a modification unit configured to modify said second frequency in such a way that the relationship between said first frequency and said second frequency is a non-integer multiple.

7. The non-contact power reception device according to claim 1, further comprising a modification unit configured to modify said first frequency in such a way that the relationship between said first frequency and said second frequency is a non-integer multiple.

8. The non-contact power reception device according to claim 1, wherein said communication device is capable of selecting one from a plurality of communication frequencies to conduct the wireless communication with said power transmission device, and selects a communication frequency which is a non-integer multiple of said first frequency from said plurality of communication frequencies as said second frequency to conduct the wireless communication with said power transmission device.

9. A vehicle comprising the non-contact power reception device according to claim 1.

10. A non-contact power transmission device configured to transmit in a non-contact manner power to a power reception device, comprising:

a power supply unit configured to generate AC power having a first frequency;

a power transmission unit configured to transmit in a non-contact manner said AC power generated by said power supply unit to said power reception device; and

a communication device configured to conduct wireless communication with said power reception device through radio wave having a second frequency,

said first frequency and said second frequency being determined in such a way that the relationship between said first frequency and said second frequency is a non-integer multiple.

11. The non-contact power transmission device according to claim 10, wherein said power transmission unit transmits in a non-contact manner said AC power to a power reception unit in said power reception device through resonance with said power reception unit via an electromagnetic field.

12. The non-contact power transmission device according to claim 10, wherein said second frequency is determined to be higher than said first frequency.

13. The non-contact power transmission device according to claim 10, wherein said first frequency is determined on the basis of a transfer status of said AC power, and said second frequency is determined in such a way that the relationship between the determined first frequency and said second frequency is a non-integer multiple.

14. The non-contact power transmission device according to claim 10, wherein said second frequency is determined on the basis of a communication status with said power reception device, and said first frequency is determined on the basis of a transfer status of said AC power in such a range that the relationship between the determined second frequency and said first frequency is a non-integer multiple.

15. The non-contact power transmission device according to claim 10, further comprising a modification unit configured to modify said second frequency in such a way that the relationship between said first frequency and said second frequency is a non-integer multiple.

16. The non-contact power transmission device according to claim 10, farther comprising a modification unit configured to modify said first frequency in such a way that the relationship between said first frequency and said second frequency is a non-integer multiple.

17. The non-contact power transmission device according to claim 10, wherein said communication device is capable of selecting one from a plurality of communication frequencies to conduct the wireless communication with said power reception device, and selects a communication frequency which is a non-integer multiple of said first frequency from said plurality of communication frequencies as said second frequency to conduct the wireless communication with said power reception device.

18. A non-contact power transfer system configured to transfer in a non-contact manner power from a power transmission device to a power reception device,

said power transmission device including:

a power supply unit configured to generate AC power having a first frequency;

a power transmission unit configured to transmit in a non-contact manner said AC power generated by said power supply unit to said power reception device; and

a first communication device configured to conduct wireless communication with said power reception device through radio wave having a second frequency,

said power reception device including;

a power reception unit configured to receive in a non-contact manner said AC power transmitted from said power transmission unit; and

a second communication device configured to conduct wireless communication with said power transmission device through radio wave having said second frequency,

said first frequency and said second frequency being determined in such a way that the relationship between said first frequency and said second frequency is a non-integer multiple.

19. The non-contact power transfer system according to claim 18, wherein

said power transmission unit transmits in a non-contact manner said AC power to said power reception unit through resonance with said power reception unit via an electromagnetic field, and

said power reception unit receives in a non-contact manner said AC power transmitted from said power transmission unit through resonance with said power transmission unit via an electromagnetic field.

20. The non-contact power transfer system according to claim 18, wherein said second frequency is determined to be higher than said first frequency.

21. The non-contact power transfer system according to claim 18, further comprising a control unit configured to adjust said first frequency on the basis of a transfer status of said AC power and modify said second frequency in such a way that the relationship between the adjusted first frequency and said second frequency is a non-integer multiple.

22. The non-contact power transfer system according to claim 18, further comprising a control unit configured to determine said second frequency on the basis of a communication status with said power transmission device, and after the determination of said second frequency, adjust said first frequency on the basis of a transfer status of said AC power in such a range that the relationship between said first frequency and said second frequency is a non-integer multiple.

23. The non-contact power transfer system according to claim 18, wherein said first and second communication devices are capable of selecting one from a plurality of communication frequencies to conduct the wireless communication with each other, and select a communication frequency which is a non-integer multiple of said first frequency from said plurality of communication frequencies as said second frequency to conduct the wireless communication with each other.