Vehicle mounting structure of contactless power reception device

Patent metadata

Field	Value
Publication number	US-9827864-B2
Application number	US-201315024192-A
Country	US
Kind code	B2
Filing date	Sep 27, 2013
Priority date	Sep 27, 2013
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

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.

First claim

The invention claimed is:

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.

Assignees

• Nissan Motor

Inventors

• Asai Akihiro
• Maikawa Kengo

Classifications

• Y02T90/14

  Plug-in electric vehicles · CPC title

• B60L2270/147

  electro magnetic [EMI] · CPC title

• B60L2240/36

  Temperature of vehicle components or parts · CPC title

• B60L53/38

  specially adapted for charging by inductive energy transfer · CPC title

• H02J50/60

  responsive to the presence of foreign objects, e.g. detection of living beings · CPC title