Vehicle

• US 9,826,670 B2
• Filed: 04/04/2013
• Issued: 11/21/2017
• Est. Priority Date: 04/05/2012
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Nakamura, Toru, Ichikawa, Shinji, Higashiyama, Arinori, Yamamoto, Takahisa
• Primary Examiner(s): Berhanu, Samuel
• Application Number:
  US14/389,790
• Publication Number:
  US 20150061583A1
• Time in Patent Office: 1,692 Days
• Field of Search: 320108, 320109
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• 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 27/363 made of electrically conductive material
• CPC Class Codes: H01F 27/366 made of ferromagnetic material
• 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 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H05K 9/00 Screening of apparatus or components against electric or magnetic fields devices for absorbing radiation from an antenna H01Q17/00
• 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 includes a power receiving portion that is mounted below a floor panel and that receives electric power in a contactless manner from a power transmitting portion provided outside the vehicle, an electromagnetic shield that prevents an electromagnetic field from passing through, a power receiving portion cover that allows the electromagnetic field to pass through and covers the power receiving portion, and an undercover that allows the electromagnetic field to pass through and covers the power receiving portion cover.

Claims

1. A vehicle comprising:

a power receiving portion that receives electric power in a contactless manner from a power transmitting portion provided outside the vehicle;

an electromagnetic shield that prevents an electromagnetic field from passing through;

a first cover that allows the electromagnetic field to pass through and covers the power receiving portion; and

a second cover that (1) allows the electromagnetic field to pass through, (2) covers the first cover, and (3) horizontally surrounds the electromagnetic shield,

wherein the second cover has a base portion and a wall portion that constitute a housing with an opening on an upper side of the housing, the opening opposing the base portion, and the wall portion horizontally surrounds the electromagnetic shield;

the power receiving portion is mounted below a floor panel provided in the vehicle;

the electromagnetic shield is open on a lower side where the power receiving portion is located, and surrounds the power receiving portion from above and a side in a horizontal direction;

the first cover is positioned below the power receiving portion and covers the power receiving portion; and

the second cover is positioned below the first cover and covers the first cover;

the electromagnetic shield includes a base portion positioned on the floor panel side, and a side wall portion that surrounds the base portion at an edge portion of the base portion, and extends downward from the base portion; and

the first cover is fixed to the floor panel at a position on an opposite side of the side wall portion of the electromagnetic shield from the power receiving portion so that the first cover covers the power receiving portion; and

the second cover is fixed to the floor panel so as to cover the electromagnetic shield.

2. The vehicle according to claim 1, wherein

the electromagnetic shield is provided at a position on an opposite side of the power receiving portion from the power transmitting portion side.

3. The vehicle according to claim 1, wherein

the electromagnetic shield includes a base portion positioned on the floor panel side, and a side wall portion that surrounds the base portion at an edge portion of the base portion, and extends downward from the base portion;

the first cover is fixed to the electromagnetic shield so as to cover the power receiving portion; and

the second cover is fixed to the floor panel so as to cover the electromagnetic shield.

4. The vehicle according to claim 3, wherein

the first cover is fixed to the base portion, in a position at an inside, which is the power receiving portion side, of the side wall portion of the electromagnetic shield, so as to cover the power receiving portion.

5. The vehicle according to claim 3, wherein

the first cover is fixed to the side wall portion of the electromagnetic shield.

6. The vehicle according to claim 1, wherein

the first cover is fixed to the electromagnetic shield with a seal member disposed between the first cover and the electromagnetic shield.

7. The vehicle according to claim 1, wherein

the first cover is fixed to the floor panel with a seal member disposed between the first cover and the floor panel.

8. 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 equal to or less than 10% of the natural frequency of the power receiving portion.

9. The vehicle according to claim 1, wherein

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

10. 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 that is formed between the power receiving portion and the power transmitting portion and that oscillates at a specific frequency, and an electric field that is formed between the power receiving portion and the power transmitting portion and that oscillates at a specific frequency.

11. A vehicle comprising:

a power receiving portion that receives electric power in a contactless manner from a power transmitting portion provided outside the vehicle;

an electromagnetic shield that prevents an electromagnetic field from passing through;

a first cover that allows the electromagnetic field to pass through and covers the power receiving portion; and

a second cover that (1) allows the electromagnetic field to pass through, (2) covers the first cover, and (3) horizontally surrounds the electromagnetic shield,

wherein

the power receiving portion is mounted below a floor panel provided in the vehicle,

the electromagnetic shield is open on a lower side where the power receiving portion is located, and surrounds the power receiving portion from above and a side in a horizontal direction;

the first cover is positioned below the power receiving portion and covers the power receiving portion; and

the second cover is positioned below the first cover and covers the first cover,

the electromagnetic shield includes a base portion positioned on the floor panel side, and a side wall portion that surrounds the base portion at an edge portion of the base portion, and extends downward from the base portion;

the first cover is fixed to the electromagnetic shield so as to cover the power receiving portion; and

the second cover is fixed to the floor panel so as to cover the electromagnetic shield.

12. The vehicle according to claim 11, wherein

the first cover is fixed to the base portion, in a position at an inside, which is the power receiving portion side, of the side wall portion of the electromagnetic shield, so as to cover the power receiving portion.

13. The vehicle according to claim 11, wherein

the first cover is fixed to the side wall portion of the electromagnetic shield.