POWER SUPPLY DEVICE AND POWER SUPPLY METHOD

• US 20140300316A1
• Filed: 10/18/2011
• Published: 10/09/2014
• Est. Priority Date: 10/18/2011
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Miwa, Koji, Kawai, Takashi, Ichikawa, Shinji
• Granted Patent: US 9,254,756 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• 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 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: G06Q 30/04 Billing or invoicing
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• 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: Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
• CPC Class Codes: Y04S 50/12 Billing, invoicing, buying or selling transactions or other related activities, e.g. cost or usage evaluation

Abstract

A power supply device which performs power supply from an outside to a vehicle includes: a power source section for performing the power supply to the vehicle; and a control device that performs control of the power source section. The control device obtains information about power reception efficiency of the vehicle as an object of the power supply and determines a power reception efficiency range and a fee that correspond to the obtained information from a plurality of power reception efficiency ranges and plurality of fees that are set corresponding to the plurality of power reception efficiency ranges. The power supply device preferably further includes a power transmission section for receiving the power from the power source section and contactlessly performing power transmission to the vehicle.

Claims

1. A power supply device which performs power supply from an outside to a vehicle, the power supply device comprising:

a power source section configured to perform the power supply to the vehicle; and

a control device that performs control of the power source section, wherein the control device obtains information about power reception efficiency of the vehicle as an object of the power supply and determines a power reception efficiency range and a fee that correspond to the obtained information from a plurality of power reception efficiency ranges and a plurality of fees that are set corresponding to the plurality of power reception efficiency ranges.

2. The power supply device according to claim 1, further comprising a power transmission section configured to receive the power from the power source section and contactlessly performing power transmission to the vehicle.

3. The power supply device according to claim 2, wherein the power transmission section is configured such that a difference in a natural frequency from a power reception section of the vehicle falls within ±

10%.

4. The power supply device according to claim 2, wherein a coupling coefficient between the power reception section of the vehicle and the power transmission section is 0.1 or smaller.

5. The power supply device according to claim 2, wherein the power transmission section transmits the power to the power reception section through either one of a magnetic field that is formed between the power reception section of the vehicle and the power transmission section and vibrates at a specified frequency and an electric field that is formed between the power reception section and the power transmission section and vibrates at a specified frequency.

6. The power supply device according to claim 1, wherein the control device obtains as the information any of power reception efficiency in execution of temporary energization, a mismatch amount between a power transmission section and a power reception section in a case where contactless charging is performed, presence or absence of an object interposed between the power transmission section and the power reception section in a case where the contactless charging is performed, and aging degradation information about the vehicle and calculates power reception efficiency in power supply according to the obtained information.

7. The power supply device according to claim 1, wherein the control device informs an operator of the vehicle of the determined fee.

8. The power supply device according to claim 1, wherein the control device informs an operator of the vehicle of the determined fee, starts the power supply to the vehicle if the operator of the vehicle approves the determined fee, and stops the power supply to the vehicle if the operator of the vehicle does not approve the determined fee.

9. A power supply method of performing power supply from an outside to a vehicle, the power supply method comprising the steps of:

obtaining information about power reception efficiency of a vehicle as an object of the power supply; and

determining a power reception efficiency range and a fee that correspond to the obtained information from a plurality of power reception ranges and a plurality of fees that are set corresponding to the plurality of power reception efficiency ranges.

10. A power reception device which receives power from a power supply device, the power reception device comprising:

a power reception section that receives the power from the power supply device; and

a control device that performs control of the power reception section,

wherein the control device obtains information about power reception efficiency of a vehicle as an object of the power supply and determines a power reception efficiency range and a fee that correspond to the obtained information from a plurality of power reception efficiency ranges and a plurality of fees that are set corresponding to the plurality of power reception efficiency ranges.

11. The power reception device according to claim 10, wherein the power reception section contactlessly receives the power from the power supply device.

12. The power reception device according to claim 11, wherein the power reception section is configured such that a difference in a natural frequency from a power transmission section falls within ±

10%.

13. The power reception device according to claim 11, wherein a coupling coefficient between the power reception section and a power transmission section of the power supply device is 0.1 or smaller.

14. The power reception device according to claim 11, wherein a power transmission section of the power supply device transmits the power to the power reception section through either one of a magnetic field that is formed between the power reception section and the power transmission section and vibrates at a specified frequency and an electric field that is formed between the power reception section and the power transmission section and vibrates at a specified frequency.

15. The power reception device according to claim 10, wherein the control device obtains as the information any of power reception efficiency in execution of temporary energization, a mismatch amount between a power transmission section and a power reception section in a case where contactless charging is performed, presence or absence of an object interposed between the power transmission section and the power reception section in a case where the contactless charging is performed, and aging degradation information about the vehicle and calculates power reception efficiency in power supply according to the obtained information.

16. The power reception device according to claim 10, wherein the control device informs an operator of the vehicle of the determined fee.

17. The power reception device according to claim 10, wherein the control device informs an operator of the vehicle of the determined fee, allows staring of the power supply to the vehicle if the operator of the vehicle approves the determined fee, and allows stopping of the power supply to the vehicle if the operator of the vehicle does not approve the determined fee.

18. A power transmission-reception system comprising:

a power supply device that performs power supply from an outside to a vehicle;

a power reception device that is installed in the vehicle and received supply of power from the power supply device; and

a control device that performs control related to power transmission from the power supply device to the power reception device,

wherein the control device obtains information about power reception efficiency of the vehicle as an object of the power supply and determines a power reception efficiency range and a fee that correspond to the obtained information from a plurality of power reception efficiency ranges and a plurality of fees that are set corresponding to the plurality of power reception efficiency ranges.