VEHICLE AND POWER TRANSFER SYSTEM

• US 20130193749A1
• Filed: 01/23/2013
• Published: 08/01/2013
• Est. Priority Date: 01/31/2012
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Shinji Ichikawa, Toru Nakamura
• Inventors: ICHIKAWA, Shinji, NAKAMURA, Toru
• Application Number:
  US13/748,011
• Publication Number:
  US 20130193749A1
• Time in Patent Office: Days
• US Class Current: 307/9.1
• CPC Class Codes: B60L 1/00 Supplying electric power to auxiliary equipment of vehicles circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• 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: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• 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 vehicle that includes a power receiving portion that contactlessly receives electric power from a power transmitting portion provided outside the vehicle includes a floor panel that forms a bottom face of the vehicle; and a battery that is provided on a lower face of the floor panel. The power receiving portion is provided on the lower face of the floor panel. When an image of the power receiving portion is projected horizontally from a location that is horizontally spaced apart from the power receiving portion toward the battery, at least part of the image of the power receiving portion is projected onto the battery.

Claims

1. A vehicle comprising:

a floor panel that forms a bottom face of the vehicle;

a battery that is provided on a lower face of the floor panel; and

a power receiving portion that contactlessly receives electric power from a power transmitting portion provided outside the vehicle and that is provided on the lower face of the floor panel, at least part of an image of the power receiving portion being projected onto the battery when the image of the power receiving portion is projected horizontally toward the battery.

2. The vehicle according to claim 1, wherein

the battery includes a shield that is provided at a portion that faces the power receiving portion.

3. The vehicle according to claim 1, wherein

the battery is arranged adjacent to a forward side in a travel direction of the vehicle with respect to the power receiving portion.

4. The vehicle according to claim 1, wherein

the battery is arranged adjacent to a rearward side in a travel direction of the vehicle with respect to the power receiving portion.

5. The vehicle according to claim 1, wherein

the battery is arranged adjacent to a forward side and a rearward side in a travel direction of the vehicle with respect to the power receiving portion.

6. The vehicle according to claim 1, wherein

the battery is arranged at a location adjacent to the power receiving portion in a width direction of the vehicle.

7. The vehicle according to claim 6, wherein

the battery is arranged at a location adjacent to the power receiving portion on one side in the width direction of the vehicle.

8. The vehicle according to claim 6, wherein

the battery is arranged at a location adjacent to the power receiving portion on both sides in the width direction of the vehicle.

9. The vehicle according to claim 1, wherein

the battery includes:

a front portion that is located adjacent to a forward side in a travel direction of the vehicle with respect to the power receiving portion;

a rear portion that is arranged adjacent to a rearward side in the travel direction of the vehicle with respect to the power receiving portion;

a first side portion that is provided at a location adjacent to the power receiving portion in a width direction of the vehicle and a second side portion that is provided on an opposite side of the power receiving portion to a side on which the first side portion is provided.

10. The vehicle according to claim 1, wherein

the battery is arranged such that a lower end portion of the battery is located vertically lower than a lower end portion of the power receiving portion.

11. The vehicle according to claim 1, wherein

the battery includes a control unit, the battery includes a facing portion that faces the power receiving portion, and the control unit is provided on an opposite side of the facing portion to a side on which the power receiving portion is provided.

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

an under cover that passes through a region that is located vertically downward of the battery and the power receiving portion, the under cover being provided so as to cover the battery and the power receiving portion; and

a cooling device that cools the battery and the power receiving portion by supplying refrigerant to between the under cover and the floor panel.

13. The vehicle according to claim 1, wherein

a difference between a natural frequency of the power transmitting portion and a natural frequency of the power receiving portion is smaller than or equal to 10% of the natural frequency of the power receiving portion.

14. The vehicle according to claim 1, wherein

the power receiving portion receives electric power from the power transmitting portion through at least one of a magnetic field and an electric field, the magnetic field is formed between the power receiving portion and the power transmitting portion and oscillates at a predetermined frequency, and the electric field is formed between the power receiving portion and the power transmitting portion and oscillates at the predetermined frequency.

15. The vehicle according to claim 1, wherein

a coupling coefficient between the power receiving portion and the power transmitting portion is smaller than or equal to 0.1.

16. A power transfer system comprising:

a power transmitting device that includes a power transmitting portion; and

a vehicle that includes;

a power receiving portion that contactlessly receives electric power from the power transmitting portion;

a floor panel that forms a bottom face of the vehicle; and

a battery that is provided on a lower face of the floor panel, at least part of an image of the power receiving portion being projected onto the battery when the image of the power receiving portion is projected horizontally toward the battery.