Inductively charged vehicle with automatic positioning

• US 9,981,566 B2
• Filed: 06/09/2015
• Issued: 05/29/2018
• Est. Priority Date: 03/16/2010
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ichikawa, Shinji
• Primary Examiner(s): Kuhfuss, Zachary L
• Application Number:
  US14/734,500
• Publication Number:
  US 20150306966A1
• Time in Patent Office: 1,085 Days
• Field of Search: 191 10, 320108, 320109
• CPC Class Codes: B60L 2210/14 Boost converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/14 Synchronous machines
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• 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 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/39 with position-responsive activation of primary coils
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• 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

Abstract

An electric vehicle receives electric power, in a non-contact manner, from an electric power transmitting coil provided externally to the vehicle. The electric vehicle includes an electric power receiving unit that is disposed at a bottom of the vehicle and receives electric power from the electric power transmitting unit via electromagnetic field resonance; a camera that captures an image of the outside; and a display unit that displays an outside view from the vehicle that is captured by the camera. The electric power receiving unit is disposed at a position that is offset toward a peripheral face, on which the camera is disposed, with respect to the center of the bottom in the longitudinal direction of the vehicle.

Claims

1. A vehicle comprising:

an electric power receiving coil that receives electric power, in a non-contact manner, from an electric power transmitting coil included in a power supply facility provided outside the vehicle, the electric power receiving coil being disposed at a bottom face side of the vehicle;

an image capturing device that captures an image of an outside viewed from the vehicle, the image capturing device being provided on a peripheral face of the vehicle;

a display unit that displays an outside view from the vehicle that is captured by the image capturing device; and

a guiding control portion that guides the vehicle toward the electric power transmitting coil, based on voltage of the electric power received by the electric power receiving coil, wherein;

the voltage of the electric power received by the electric power receiving coil increases as a distance between the electric power receiving coil and the electric power transmitting coil decreases;

the guiding control portion guides the vehicle so that the vehicle is stopped when a rate of change in the voltage of the received electric power becomes equal to or lower than a predetermined value; and

wherein the guiding control portion starts guiding the vehicle after an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device.

2. The vehicle according to claim 1, wherein:

the vehicle includes an electric power receiving unit having the electric power receiving coil provided therein; and

when an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device, a part of the electric power transmitting unit and a part of the electric power receiving unit face each other.

3. The vehicle according to claim 1, wherein the electric power output from the power supply facility when the guiding control portion performs control is lower than the electric power output from the power supply facility after the guiding control portion performs the control.

4. The vehicle according to claim 1, wherein the guiding control portion starts performing control when the distance between the electric power receiving coil and the electric power transmitting coil becomes a distance that allows the electric power receiving coil to receive the electric power from the electric power transmitting coil.

5. A vehicle comprising:

an electric power receiving coil that receives electric power, in a non-contact manner, from an electric power transmitting coil included in a power supply facility provided outside the vehicle, the electric power receiving coil being disposed at a bottom face side of the vehicle;

an image capturing device that captures an image of an outside viewed from the vehicle, the image capturing device being provided on a peripheral face of the vehicle;

a display unit that displays an outside view from the vehicle that is captured by the image capturing device; and

a guiding control portion that guides the vehicle toward the electric power transmitting coil, based on a status of power supply from the electric power transmitting coil to the electric power receiving coil, the status of power supply being determined by detecting at least one of the electric power output from the power supply facility and the electric power input to the electric power receiving coil side, wherein;

the electric power received by the electric power receiving coil increases as a distance between the electric power receiving coil and the electric power transmitting coil decreases;

the guiding control portion guides the vehicle so that the vehicle is stopped when a rate of change in the received electric power becomes equal to or lower than a predetermined value; and

wherein the guiding control portion starts guiding the vehicle after an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device.

6. The vehicle according to claim 5, wherein:

the vehicle includes an electric power receiving unit having the electric power receiving coil provided therein; and

when an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device, a part of the electric power transmitting unit and a part of the electric power receiving unit face each other.

7. The vehicle according to claim 5, wherein the electric power output from the power supply facility when the guiding control portion performs control is lower than the electric power output from the power supply facility after the guiding control portion performs the control.

8. The vehicle according to claim 5, wherein the guiding control portion starts performing control when the distance between the electric power receiving coil and the electric power transmitting coil becomes a distance that allows the electric power receiving coil to receive the electric power from the electric power transmitting coil.

9. A vehicle comprising:

an electric power receiving coil that receives electric power, in a non-contact manner, from an electric power transmitting coil included in a power supply facility provided outside the vehicle, the electric power receiving coil being disposed at a bottom face side of the vehicle;

an image capturing device that captures an image of an outside viewed from the vehicle, the image capturing device being provided on a peripheral face of the vehicle;

a communication unit that communicates with the power supply facility;

a display unit that displays an outside view from the vehicle that is captured by the image capturing device; and

a guiding control portion that transmits information on voltage of the electric power received by the electric power receiving coil to the power supply facility via the communication unit, that receives information on a distance between the electric power receiving coil and the electric power transmitting coil from the power supply facility via the communication unit, and that guides the vehicle toward the electric power transmitting coil based on the information on the distance between the electric power receiving coil and the electric power transmitting coil, wherein;

the voltage of the electric power received by the electric power receiving coil increases as the distance between the electric power receiving coil and the electric power transmitting coil decreases;

the guiding control portion guides the vehicle so that the vehicle is stopped when a rate of change in the voltage of the received electric power becomes equal to or lower than a predetermined value; and

wherein the guiding control portion starts guiding the vehicle after an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device.

10. The vehicle according to claim 9, wherein:

the vehicle includes an electric power receiving unit having the electric power receiving coil provided therein; and

when an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device, a part of the electric power transmitting unit and a part of the electric power receiving unit face each other.

11. The vehicle according to claim 9, wherein the electric power output from the power supply facility when the guiding control portion performs control is lower than the electric power output from the power supply facility after the guiding control portion performs the control.

12. The vehicle according to claim 9, wherein the guiding control portion starts performing control when the distance between the electric power receiving coil and the electric power transmitting coil becomes a distance that allows the electric power receiving coil to receive the electric power from the electric power transmitting coil.

13. A vehicle comprising:

an electric power receiving coil that receives electric power, in a non-contact manner, from an electric power transmitting coil included in a power supply facility provided outside the vehicle, the electric power receiving coil being disposed at a bottom face side of the vehicle;

an image capturing device that captures an image of an outside viewed from the vehicle, the image capturing device being provided on a peripheral face of the vehicle;

a display unit that displays an outside view from the vehicle that is captured by the image capturing device; and

a guiding control portion that guides the vehicle toward the electric power transmitting coil, based on current of the electric power received by the electric power receiving coil, wherein;

current of the electric power received by the electric power receiving coil increases as a distance between the electric power receiving coil and the electric power transmitting coil decreases;

the guiding control portion guides the vehicle so that the vehicle is stopped when a rate of change in the current of the received electric power becomes equal to or lower than a predetermined value; and

wherein the guiding control portion starts guiding the vehicle after an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device.

14. A vehicle comprising:

an electric power receiving coil that receives electric power, in a non-contact manner, from an electric power transmitting coil included in a power supply facility provided outside the vehicle, the electric power receiving coil being disposed at a bottom face side of the vehicle;

an image capturing device that captures an image of an outside viewed from the vehicle, the image capturing device being provided on a peripheral face of the vehicle;

a communication unit that communicates with the power supply facility;

a display unit that displays an outside view from the vehicle that is captured by the image capturing device; and

a guiding control portion that transmits information on voltage of the electric power received by the electric power receiving coil to the power supply facility via the communication unit, that receives information on a distance between the electric power receiving coil and the electric power transmitting coil from the power supply facility via the communication unit, and that guides the vehicle toward the electric power transmitting coil based on the information on the distance between the electric power receiving coil and the electric power transmitting coil, wherein;

current of the electric power received by the electric power receiving coil increases as the distance between the electric power receiving coil and the electric power transmitting coil decreases;

the guiding control portion guides the vehicle so that the vehicle is stopped when a rate of change in the current of the received electric power becomes equal to or lower than a predetermined value; and

wherein the guiding control portion starts guiding the vehicle after an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device.

15. A vehicle comprising:

an electric power receiving coil that receives electric power, in a non-contact manner, from an electric power transmitting coil included in a power supply facility provided outside the vehicle, the electric power receiving coil being disposed at a bottom face side of the vehicle;

an image capturing device that captures an image of an outside viewed from the vehicle, the image capturing device being provided on a peripheral face of the vehicle;

a communication unit that communicates with the power supply facility;

a display unit that displays an outside view from the vehicle that is captured by the image capturing device; and

a guiding control portion that guides the vehicle toward the electric power transmitting coil based on at least one of voltage of the electric power received by the electric power receiving coil, and information on the electric power transmitted from the power supply facility, the information on the electric power being received via the communication unit, wherein;

the electric power receiving coil is disposed at a position that is offset toward the peripheral face, on which the image capturing device is disposed, with respect to a center of the vehicle in a longitudinal direction of the vehicle; and

the guiding control portion starts guiding the vehicle after an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device.

16. A vehicle comprising:

an electric power receiving coil that receives electric power, in a non-contact manner, from an electric power transmitting coil included in a power supply facility provided outside the vehicle, the electric power receiving coil being disposed at a bottom face side of the vehicle;

an image capturing device that captures an image of an outside viewed from the vehicle, the image capturing device being provided on a peripheral face of the vehicle, which is not the bottom face of the vehicle;

a communication unit that communicates with the power supply facility;

a display unit that displays an outside view from the vehicle that is captured by the image capturing device; and

a guiding control portion that guides the vehicle toward the electric power transmitting coil, based on a status of power supply from the electric power transmitting coil to the electric power receiving coil, the status of power supply being determined by detecting at least one of the electric power output from the power supply facility and the electric power input to the electric power receiving coil side, wherein;

the electric power receiving coil is disposed at a position that is offset toward the peripheral face, on which the image capturing device is disposed, with respect to a center in a longitudinal direction of the vehicle; and

the guiding control portion starts guiding the vehicle after an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device.

17. A vehicle comprising:

an electric power receiving coil that receives electric power, in a non-contact manner, from an electric power transmitting coil included in a power supply facility provided outside the vehicle, the electric power receiving coil being disposed at a bottom face side of the vehicle;

an image capturing device that captures an image of an outside viewed from the vehicle, the image capturing device being provided on a peripheral face of the vehicle, which is not the bottom face of the vehicle;

a communication unit that communicates with the power supply facility;

a display unit that displays an outside view from the vehicle that is captured by the image capturing device; and

a guiding control portion that transmits information on voltage of the electric power received by the electric power receiving coil to the power supply facility via the communication unit, that receives information on a distance between the electric power receiving coil and the electric power transmitting coil from the power supply facility via the communication unit, and that guides the vehicle toward the electric power transmitting coil based on the information on the distance between the electric power receiving coil and the electric power transmitting coil, wherein;

the electric power receiving coil is disposed at a position that is offset toward the peripheral face, on which the image capturing device is disposed, with respect to a center in a longitudinal direction of the vehicle; and

the guiding control portion starts guiding the vehicle after an electric power transmitting unit having the electric power transmitting coil provided therein becomes positioned in a blind spot of the image capturing device.