Vehicle and wireless power transmission device

• US 9,132,739 B2
• Filed: 05/22/2014
• Issued: 09/15/2015
• Est. Priority Date: 11/25/2011
• Status: Active Grant

• Current Assignee: IHI Corporation
• Original Assignee: IHI Corporation
• Inventors: Niizuma, Motonao
• Primary Examiner(s): CAMBY, RICHARD M
• Application Number:
  US14/284,661
• Publication Number:
  US 20140257614A1
• Time in Patent Office: 481 Days
• Field of Search: 701/22
• US Class Current: 1/1
• CPC Class Codes: B60L 15/007 Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/12 Induction machines
• CPC Class Codes: B60L 2220/14 Synchronous machines
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/32 Driving direction
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• 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 53/126 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 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/54 Fuel cells
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60M 7/003 for vehicles using stored power (e.g. charging stations)
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• 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: H02J 7/00034 : Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• 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

The vehicle includes a motor capable of producing motive power for movement; a storage battery capable of supplying electric power to drive the motor; and a secondary coil capable of performing wireless transmission of electric power between the secondary coil and a primary coil at an outside of the vehicle. In addition, the vehicle includes a command generation part capable of generating a command to move the vehicle so as to adjust a relative position of the secondary coil with respect to the primary coil, using a first received power value indicating an amount of electric power received by the secondary coil from the primary coil or using a second received power value indicating an amount of electric power received by the primary coil from the secondary coil.

Claims

1. A vehicle comprising:

a motor used to produce motive power for movement;

a storage battery used to supply electric power to drive the motor;

a secondary coil capable of performing wireless transmission of electric power between the secondary coil and a primary coil at an outside of the vehicle; and

a command generation part used to generate a command to move the vehicle so as to adjust a relative position of the secondary coil with respect to the primary coil, using a first received power value indicating an amount of electric power received by the secondary coil from the primary coil or using a second received power value indicating an amount of electric power received by the primary coil from the secondary coil.

2. The vehicle according to claim 1, further comprising:

a first received power value-computing part used to determine the first received power value to be used in the command generation part; and

a control part used to control the motor based on the command generated by the command generation part so as to adjust the position of the secondary coil with respect to the primary coil.

3. The vehicle according to claim 2,

wherein the control part is configured to adjust the position of the secondary coil with respect to the primary coil by controlling the motor and by moving the vehicle backward and forward.

4. The vehicle according to claim 2,

wherein the vehicle is configured so that electric power received by the secondary coil is used as electric power to drive the motor when the control part controls the motor so as to perform positioning of the secondary coil with respect to the primary coil.

5. The vehicle according to claim 2, further comprising:

a charging device used to charge the storage battery using electric power received by the secondary coil; and

a switching circuit used to electrically disconnect the motor from the storage battery during charging of the storage battery by the charging device.

6. The vehicle according to claim 2, further comprising:

a first vehicle input part into which a first power supply value is input from the outside, the first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil; and

a first efficiency calculation part used to determine power transmission efficiency from the primary coil to the secondary coil, using the first received power value determined by the first received power value-computing part and using the first power supply value input into the first vehicle input part,

wherein the command generation part is configured to generate the command based on the power transmission efficiency determined by the first efficiency calculation part.

7. A wireless power transmission device capable of wirelessly transmitting electric power outside thereof,

wherein the wireless power transmission device is configured to wirelessly transmit, to the secondary coil from the primary coil, electric power to charge the storage battery provided in the vehicle according to claim 1.

8. A wireless power transmission device capable of wirelessly transmitting electric power outside thereof, and of wirelessly transmitting, to the secondary coil from the primary coil, electric power to charge the storage battery provided in the vehicle according to claim 6, the wireless power transmission device comprising:

a first power supply value-computing part used to determine the first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil; and

a first device output part used to output the first power supply value determined by the first power supply value-computing part outside.

9. The vehicle according to claim 1, further comprising:

a first load device used to consume electric power received by the secondary coil;

a power-supplying destination-setting device used to set a supply destination of the electric power received by the secondary coil to one of the first load device and the storage battery;

a first received power value-computing part used to determine the first received power value indicating an amount of electric power received by the secondary coil in a state where the supply destination of the electric power received by the secondary coil is set to the first load device by the power-supplying destination-setting device; and

a control part used to control the motor based on the command generated by the command generation part so as to adjust the position of the secondary coil with respect to the primary coil,

wherein the command generation part is configured to generate the command using the first received power value determined by the first received power value-computing part.

10. The vehicle according to claim 9,

wherein the control part is configured to adjust the position of the secondary coil with respect to the primary coil by controlling the motor and by moving the vehicle backward and forward.

11. The vehicle according to claim 9, further comprising:

a first vehicle input part into which a first power supply value is input from the outside, the first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil; and

a first efficiency calculation part used to determine power transmission efficiency from the primary coil to the secondary coil, using the first received power value determined by the first received power value-computing part and using the first power supply value input into the first vehicle input part,

wherein the command generation part is configured to generate the command based on the power transmission efficiency determined by the first efficiency calculation part.

12. The vehicle according to claim 9, further comprising:

a first vehicle output part used to output, outside, a positioning completion notification indicating that positioning of the secondary coil with respect to the primary coil is finished.

13. A wireless power transmission device capable of wirelessly transmitting electric power to the vehicle according to claim 9 using the primary coil.

14. A wireless power transmission device capable of wirelessly transmitting electric power to the vehicle according to claim 11 using the primary coil, the wireless power transmission device comprising:

a first power supply value-computing part used to determine the first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil; and

a first device output part used to output the first power supply value determined by the first power supply value-computing part outside thereof.

15. A wireless power transmission device capable of wirelessly transmitting electric power to the vehicle according to claim 12 using the primary coil, the wireless power transmission device comprising:

a first power supply value-computing part used to determine a first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil;

a first device output part used to output the first power supply value determined by the first power supply value-computing part outside thereof, and

a first device input part into which the positioning completion notification output from the first vehicle output part is input,

wherein the wireless power transmission device is configured to increase an amount of electric power supplied from the primary coil to the secondary coil when the positioning completion notification is input into the first device input part.

16. The vehicle according to claim 1, further comprising:

a second vehicle input part into which the second received power value is input from the outside, the second received power value indicating an amount of electric power received by the primary coil from the secondary coil and being used in the command generation part; and

a control part used to control the motor based on the command generated by the command generation part so as to adjust the position of the secondary coil with respect to the primary coil.

17. The vehicle according to claim 16, further comprising:

a second power supply value-computing part used to determine a second power supply value indicating an amount of electric power which the secondary coil supplies to the primary coil; and

a second efficiency calculation part used to determine power transmission efficiency from the secondary coil to the primary coil, using the second power supply value determined by the second power supply value-computing part and using the second received power value input into the second vehicle input part,

wherein the command generation part is configured to generate the command based on the power transmission efficiency determined by the second efficiency calculation part.

18. The vehicle according to claim 16,

wherein the control part is configured to adjust the position of the secondary coil with respect to the primary coil by controlling the motor and by moving the vehicle backward and forward.

19. The vehicle according to claim 16,

wherein the vehicle is configured to start receiving electric power from the primary coil through the secondary coil when positioning of the secondary coil with respect to the primary coil is finished.

20. The vehicle according to claim 16, further comprising:

a first vehicle output part used to output, outside, a positioning completion notification indicating that positioning of the secondary coil with respect to the primary coil is finished,

wherein the vehicle is configured to start receiving electric power from the primary coil through the secondary coil when the first vehicle output part outputs the positioning completion notification outside.

21. A wireless power transmission device capable of wirelessly receiving or transmitting electric power from or to the vehicle according to claim 16 using the primary coil, the wireless power transmission device comprising:

a second load device used to consume electric power received by the primary coil from the secondary coil;

a second received power value-computing part used to determine the second received power value indicating an amount of electric power received by the primary coil from the secondary coil; and

a second device output part used to output the second received power value determined by the second received power value-computing part outside thereof,

wherein the wireless power transmission device is configured to start supplying electric power from the primary coil to the secondary coil when positioning of the secondary coil with respect to the primary coil is finished.

22. A wireless power transmission device capable of wirelessly receiving or transmitting electric power from or to the vehicle according to claim 20 using the primary coil, the wireless power transmission device comprising:

a second load device used to consume electric power received by the primary coil from the secondary coil;

a second received power value-computing part used to determine the second received power value indicating an amount of electric power received by the primary coil from the secondary coil;

a second device output part used to output the second received power value determined by the second received power value-computing part outside thereof; and

a first device input part into which the positioning completion notification output from the first vehicle output part is input,

wherein the wireless power transmission device is configured to start supplying electric power from the primary coil to the secondary coil when the positioning completion notification is input into the first device input part.

23. The vehicle according to claim 1,

wherein the command generation part is a signal presentation part used to present the command to move the vehicle so as to adjust the relative position of the secondary coil with respect to the primary coil, as a signal indicating a direction in which the vehicle is to be moved.

24. The vehicle according to claim 23, further comprising:

a first received power value-computing part used to determine the first received power value which indicates an amount of electric power received by the secondary coil from the primary coil and which is used in the command generation part.

25. The vehicle according to claim 23,

wherein the signal presentation part is configured to present the signal indicating the direction in which the vehicle is to be moved, using light or sound.

26. The vehicle according to claim 23,

wherein the vehicle is configured so that electric power received by the secondary coil is used as electric power to drive the motor.

27. The vehicle according to claim 23, further comprising:

a charging device used to charge the storage battery using electric power received by the secondary coil; and

a switching circuit used to electrically disconnect the motor from the storage battery during charging of the storage battery by the charging device.

28. The vehicle according to claim 24, further comprising:

a first vehicle input part into which a first power supply value is input from the outside, the first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil; and

a first efficiency calculation part used to determine power transmission efficiency from the primary coil to the secondary coil, using the first received power value determined by the first received power value-computing part and using the first power supply value input into the first vehicle input part,

wherein the command generation part is configured to generate the command based on the power transmission efficiency determined by the first efficiency calculation part.

29. A wireless power transmission device capable of wirelessly transmitting, to the secondary coil from the primary coil, electric power to charge the storage battery provided in the vehicle according to claim 23.

30. A wireless power transmission device capable of wirelessly transmitting, to the secondary coil from the primary coil, electric power to charge the storage battery provided in the vehicle according to claim 28, the wireless power transmission device comprising:

a first power supply value-computing part used to determine a first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil; and

a first device output part used to output the first power supply value determined by the first power supply value-computing part outside thereof.

31. The vehicle according to claim 23, further comprising:

a first load device used to consume electric power received by the secondary coil;

a power-supplying destination-setting device used to set a supply destination of the electric power received by the secondary coil to one of the first load device and the storage battery; and

a first received power value-computing part used to determine the first received power value indicating an amount of electric power received by the secondary coil in a state where the supply destination of the electric power received by the secondary coil is set to the first load device by the power-supplying destination-setting device,

wherein the signal presentation part is configured to present the signal indicating the direction in which the vehicle is to be moved, using the first received power value determined by the first received power value-computing part.

32. The vehicle according to claim 31,

wherein the signal presentation part is configured to present the signal indicating the direction in which the vehicle is to be moved, using light or sound.

33. The vehicle according to claim 31, further comprising:

a first vehicle input part into which a first power supply value is input from the outside, the first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil; and

a first efficiency calculation part used to determine power transmission efficiency from the primary coil to the secondary coil, using the first received power value determined by the first received power value-computing part and using the first power supply value input into the first vehicle input part,

wherein the signal presentation part is configured to present the signal indicating the direction in which the vehicle is to be moved, based on the power transmission efficiency determined by the first efficiency calculation part.

34. The vehicle according to claim 31, further comprising:

a first vehicle output part used to output, outside, a positioning completion notification indicating that positioning of the secondary coil with respect to the primary coil is finished.

35. A wireless power transmission device capable of wirelessly transmitting electric power to the vehicle according to claim 31 using the primary coil.

36. A wireless power transmission device capable of wirelessly transmitting electric power to the vehicle according to claim 33 using the primary coil, the wireless power transmission device comprising:

a first power supply value-computing part used to determine a first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil; and

a first device output part used to output the first power supply value determined by the first power supply value-computing part outside thereof.

37. A wireless power transmission device capable of wirelessly transmitting electric power to the vehicle according to claim 34 using the primary coil, the wireless power transmission device comprising:

a first power supply value-computing part used to determine a first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil;

a first device output part used to output the first power supply value determined by the first power supply value-computing part outside thereof, and

a first device input part into which the positioning completion notification output from the first vehicle output part is input,

wherein the wireless power transmission device is configured to increase an amount of electric power supplied from the primary coil to the secondary coil when the positioning completion notification is input into the first device input part.

44. The vehicle according to claim 1, wherein the command generation part is configured to generate the command so that one of the first received power value, the second received power value, power transmission efficiency from the primary coil to the secondary coil, and power transmission efficiency from the secondary coil to the primary coil is increased.

38. A vehicle comprising:

a motor used to produce motive power for movement;

a storage battery used to supply electric power to drive the motor;

a secondary coil capable of performing wireless transmission of electric power between the secondary coil and a primary coil at an outside of the vehicle;

a first received power value-computing part used to determine a first received power value indicating an amount of electric power received by the secondary coil from the primary coil; and

a second vehicle output part used to output the first received power value determined by the first received power value-computing part outside.

39. The vehicle according to claim 38,

wherein the vehicle is configured so that electric power received by the secondary coil is used as electric power to drive the motor.

40. The vehicle according to claim 38, further comprising:

a charging device used to charge the storage battery using electric power received by the secondary coil; and

a switching circuit used to electrically disconnect the motor from the storage battery during charging of the storage battery by the charging device.

41. The vehicle according to claim 38, further comprising:

a first load device used to consume electric power received by the secondary coil; and

a power-supplying destination-setting device used to set a supply destination of the electric power received by the secondary coil to one of the first load device and the storage battery,

wherein the first received power value-computing part is configured to determine the first received power value in a state where the supply destination of the electric power received by the secondary coil is set to the first load device by the power-supplying destination-setting device.

42. A wireless power transmission device capable of wirelessly transmitting, from the primary coil, electric power to charge the storage battery provided in the vehicle according to claim 38, the wireless power transmission device comprising:

a first power supply value-computing part used to determine a first power supply value indicating an amount of electric power which the primary coil supplies to the secondary coil;

a second device input part into which the first received power value indicating an amount of electric power received by the secondary coil from the primary coil is input;

a third efficiency calculation part used to determine power transmission efficiency from the primary coil to the secondary coil, using the first power supply value determined by the first power supply value-computing part and using the first received power value input into the second device input part; and

a signal presentation part used to present a signal indicating a direction in which the vehicle is to be moved, based on the power transmission efficiency determined by the third efficiency calculation part.

43. The wireless power transmission device according to claim 42,

wherein the signal presentation part is configured to present the signal indicating the direction in which the vehicle is to be moved, using light or sound.