Wireless power transmission device and vehicle

• US 10,377,254 B2
• Filed: 09/18/2015
• Issued: 08/13/2019
• Est. Priority Date: 05/14/2013
• Status: Active Grant

• Current Assignee: IHI Corporation
• Original Assignee: IHI Corporation
• Inventors: Niizuma, Motonao
• Primary Examiner(s): Houston, Adam D
• Application Number:
  US14/858,200
• Publication Number:
  US 20160009187A1
• Time in Patent Office: 1,425 Days
• Field of Search: 307 91, 307 101
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• 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: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• 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

Abstract

A wireless power transmission device includes a power-supplying coil configured to wirelessly transmit power to an electric vehicle (EV) serving as a vehicle, be installed in a slanted state or perpendicularly to a horizontal plane, and form an electromagnetic coupling circuit along with a power-receiving coil provided in the EV.

Claims

1. A wireless power transmission device to wirelessly transmit power to a vehicle, the wireless power transmission device comprising:

a power-supplying coil installed in a slanted state or perpendicularly to a horizontal plane inside a groove formed in a road surface where the vehicle travels and configured to form an electromagnetic coupling circuit along with a power-receiving coil provided in the vehicle.

2. The wireless power transmission device according to claim 1, wherein the power-supplying coil is provided in a plate-like container having at least one surface on which a fluororesin coating film is formed.

3. The wireless power transmission device according to claim 1, wherein the power-supplying coil is provided in a plate-like container having at least one surface on which a large number of micro projections are formed.

4. The wireless power transmission device according to claim 1, wherein the power-supplying coil is provided in a plate-like container having at least one surface on which a large number of grooves extending in a slanted direction are formed.

5. The wireless power transmission device according to claim 1, wherein the power-supplying coil is installed in a state in which at least an upper end portion projects from an installation surface, in a place into which entry of the vehicle is inhibited by a vehicle stopper.

6. The wireless power transmission device according to claim 1, the power-supplying coil is installed at a stopping position at which the vehicle should stop, in a state in which the entire power-supplying coil is embedded below an installation surface.

7. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:

a power-receiving coil configured to face the power-supplying coil provided in the wireless power transmission device according to claim 1 and form the electromagnetic coupling circuit along with the power-supplying coil.

8. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:

a power-receiving coil provided in a bottom of the vehicle and configured to form the electromagnetic coupling circuit along with the power-supplying coil provided in the wireless power transmission device according to claim 1.

9. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:

a power-receiving coil configured to face the power-supplying coil provided in the wireless power transmission device according to claim 5 and form the electromagnetic coupling circuit along with the power-supplying coil.

10. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:

a power-receiving coil configured to face the power-supplying coil provided in the wireless power transmission device according to claim 6 and form the electromagnetic coupling circuit along with the power-supplying coil.

11. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:

a power-receiving coil provided in a bottom of the vehicle and configured to form the electromagnetic coupling circuit along with the power-supplying coil provided in the wireless power transmission device according to claim 5.

12. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:

a power-receiving coil provided in a bottom of the vehicle and configured to form the electromagnetic coupling circuit along with the power-supplying coil provided in the wireless power transmission device according to claim 6.

13. The wireless power transmission device according to claim 1, wherein the groove has an opening.