Vehicle mounting structure of contactless power reception device

• US 9,827,864 B2
• Filed: 09/27/2013
• Issued: 11/28/2017
• Est. Priority Date: 09/27/2013
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Asai, Akihiro, Maikawa, Kengo
• Primary Examiner(s): BARNIE, REXFORD N
• Assistant Examiner(s): Willoughby, Terrence
• Application Number:
  US15/024,192
• Publication Number:
  US 20160236574A1
• Time in Patent Office: 1,523 Days
• CPC Class Codes: B60K 2001/0416 Arrangement in the rear part of the vehicle
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• 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 53/124 Detection or removal of foreign bodies
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/363 made of electrically conductive 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 50/10 using inductive coupling
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• 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: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles

Abstract

A power reception-side coil is mounted on the bottom surface of a vehicle body and contactlessly receives power transmitted from a power feeding-side coil disposed on the ground. The power reception-side coil is of a solenoid type such that an electric wire is wound with the vehicle longitudinal direction as a coil axis. A shield member that is a plate-shaped magnetic shield is disposed between the bottom surface of the vehicle body and the power reception-side coil. The shield member has a forward-inclined surface serving as a first wall part protruding downward of the vehicle, the forward-inclined surface being raised and provided at the vehicle front side in a direction of the coil axis with respect to the power reception-side coil.

Claims

1. A vehicle mounting structure of a contactless power reception device, comprising:

a power reception-side coil configured to be mounted on a bottom surface of a vehicle body and to contactlessly receive power transmitted from a power feeding-side coil, the power reception-side coil having a conductive wire wound with a vehicle longitudinal direction as a coil axis; and

a plate-shaped magnetic shield configured to be provided around the power reception-side coil on the bottom surface of the vehicle body and to cover the bottom surface of the vehicle body,

wherein the magnetic shield has a first wall part provided on at least one of a vehicle body front side and a vehicle body rear side in a direction of the coil axis with respect to the power reception-side coil, the first wall part protruding downward of the vehicle,

wherein the first wall part is inclined such that a lower end of the first wall part is positioned more away from the power reception-side coil than an upper end of the first wall part, and is configured to guide a magnetic flux generated in the power reception-side coil downward of the vehicle, and

wherein the magnetic shield has a second wall part provided therein, the second wall part extending in parallel with the direction of the coil axis of the power reception-side coil from an end of the first wall part in the vehicle width direction and protruding downward of the vehicle.

2. The vehicle mounting structure of a contactless power reception device according to claim 1, wherein

the first wall part has a front-side wall part on the vehicle front side of the power reception-side coil and a rear-side wall part on the vehicle rear side of the power reception-side coil.

3. The vehicle mounting structure of a contactless power reception device according to claim 2, wherein

the power reception-side coil is disposed to the vehicle front side of a vehicle center in the vehicle longitudinal direction, and

a lower end of the front-side wall part is positioned below a lower end of the rear-side wall part.

4. The vehicle mounting structure of a contactless power reception device according to claim 2, wherein

the power reception-side coil is disposed to the vehicle rear side of a vehicle center in the vehicle longitudinal direction, and

a lower end of the rear-side wall part is positioned below a lower end of the front-side wall part.