POWER TRANSMITTING DEVICE, AND POWER TRANSFER SYSTEM

• US 20160297305A1
• Filed: 12/10/2014
• Published: 10/13/2016
• Est. Priority Date: 12/13/2013
• 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:
  US15/102,028
• Publication Number:
  US 20160297305A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/39 with position-responsive activation of primary coils
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• 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

A power transfer system, including a vehicle and a power transmitting device, and the power transmitting device are provided. The power transmitting device is configured to contactlessly transmit electric power to a vehicle on which a power receiving coil having any one of a plurality of different coil types is mounted. The power transmitting device includes a plurality of power transmitting coils and an electronic control unit (ECU). The ECU is configured to control currents that are respectively supplied to the plurality of power transmitting coils. The ECU is configured to select at least two power transmitting coils from among the plurality of power transmitting coils based on the coil type of the vehicle that serves as a power transmitted target and to set directions of currents respectively flowing through the selected at least two power transmitting coils.

Claims

1-11. -11. (canceled)

12. A power transmitting device configured to contactlessly transmit electric power to a vehicle on which a power receiving coil having any one of a plurality of different coil types is mounted, the power transmitting device comprising:

a plurality of power transmitting coils in each of which a coil wire is wound so as to surround a corresponding one of winding axes extending in a vertical direction, the plurality of power transmitting coils being arranged in a vehicle traveling direction or a vehicle width direction of a parking space, the plurality of power transmitting coils being configured to contactlessly transmit electric power to the power receiving coil; and

an electronic control unit configured to control currents that are respectively supplied to the plurality of power transmitting coils, the electronic control unit being configured to receive information of a coil type of the power receiving coil from the vehicle, and the electronic control unit being configured to transmit electric power from the power transmitting coils to the power receiving coil based on the coil type of the power receiving coil.

13. The power transmitting device according to claim 12, wherein

the power receiving coil has the any one of the plurality of different coil types, and

the electronic control unit is configured to select at least two power transmitting coils from among the power transmitting coils based on the coil type of the power receiving coil, and the electronic control unit is configured to set directions of currents respectively flowing through the selected at least two power transmitting coils.

14. The power transmitting device according to claim 13, wherein

the plurality of coil types include a first coil type and a second coil type, the first coil type is configured such that a coil wire is wound so as to surround a winding axis extending in a horizontal direction, the second coil type is configured such that two coils in each of which a coil wire is wound so as to surround a corresponding one of winding axes extending in the vertical direction are arranged side by side in the horizontal direction, and

the electronic control unit is configured to, when the coil type of the power receiving coil of the vehicle that serves as a power transmitted target is the first coil type or the second coil type, pass currents respectively through the selected two power transmitting coils such that directions of magnetic fluxes that are respectively generated at the corresponding winding axes of the selected two power transmitting coils are opposite to each other.

15. The power transmitting device according to claim 13, wherein

the electronic control unit is configured to receive information of a mounting position of the power receiving coil from the vehicle, and the electronic control unit is configured to change the power transmitting coils to be selected in response to the mounting position of the power receiving coil in the vehicle.

16. The power transmitting device according to claim 13, wherein

the electronic control unit is configured to receive information of a size of the power receiving coil from the vehicle, and the electronic control unit is configured to adjust a distance between the two power transmitting coils to be selected in response to the size of the power receiving coil by changing the power transmitting coils to be selected.

17. The power transmitting device according to claim 12, wherein

the power receiving coil is mounted at any one of a plurality of different mounting positions of the vehicle, and

the electronic control unit is configured to receive information of the mounting position of the power receiving coil from the vehicle, and the electronic control unit is configured to select the power transmitting coils in response to the mounting position of the power receiving coil in the vehicle.

18. The power transmitting device according to claim 12, wherein

the power receiving coil of the vehicle is any one of power receiving coils respectively having a plurality of different sizes, and

the electronic control unit is configured to receive information of the size of the power receiving coil from the vehicle, and the electronic control unit is configured to select at least two power transmitting coils from among the plurality of power transmitting coils, the electronic control unit is configured to adjust a distance between the two power transmitting coils to be selected in response to the size of the power receiving coil by changing the power transmitting coils to be selected.

19. A power transfer system configured to contactlessly transmit or receive electric power, the power transfer system comprising:

a vehicle on which a power receiving coil having any one of a plurality of different coil types is mounted; and

a power transmitting device configured to contactlessly transmit electric power to the power receiving coil of the vehicle, the power transmitting device including a plurality of power transmitting coils and an electronic control unit, each of the plurality of power transmitting coils being configured such that a coil wire is wound so as to surround a corresponding one of winding axes extending in a vertical direction, the plurality of power transmitting coils being arranged in a vehicle traveling direction or a vehicle width direction of a parking space, the electronic control unit being configured to control currents that are respectively supplied to the plurality of power transmitting coils,

the electronic control unit being configured to receive information of a coil type of the power receiving coil from the vehicle, and the electronic control unit being configured to select at least two power transmitting coils from among the plurality of power transmitting coils based on the coil type of the power receiving coil, and

the electronic control unit being configured to set directions of currents respectively flowing through the selected at least two power transmitting coils.

20. The power transfer system according to claim 19, wherein

the power receiving coil has the any one of the plurality of different coil types, and

the electronic control unit is configured to select at least two power transmitting coils from among the power transmitting coils based on of the coil type of the power receiving coil and the electronic control unit is configured to set directions of currents respectively flowing through the selected at least two power transmitting coils.

21. The power transfer system according to claim 19, wherein

the power receiving coil is mounted at any one of a plurality of different mounting positions of the vehicle, and

the electronic control unit is configured to receive information of the mounting position of the power receiving coil from the vehicle, and the electronic control unit is configured to select the power transmitting coils in response to the mounting position of the power receiving coil in the vehicle.

22. The power transfer system according to claim 19, wherein

the power receiving coil of the vehicle is any one of power receiving coils respectively having a plurality of different sizes, and

the electronic control unit is configured to select at least two power transmitting coils from among the plurality of power transmitting coils, the electronic control unit is configured to receive information of the size of the power receiving coil from the vehicle, and the electronic control unit is configured to adjust a distance between the two power transmitting coils to be selected in response to the size of the power receiving coil by changing the power transmitting coils to be selected.