Power receiving device, power transmitting device, and vehicle

Patent metadata

Field	Value
Publication number	US-10029576-B2
Application number	US-201414462008-A
Country	US
Kind code	B2
Filing date	Aug 18, 2014
Priority date	Sep 11, 2013
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A power receiving device includes a power receiving coil formed to surround space around a coil central axis extending in a front-back direction of a vehicle body, for receiving electric power from a power transmitting coil in a non-contact manner while facing the power transmitting coil, a capacitor arranged adjacent to the power receiving coil in the direction in which the coil central axis extends, and a shield arranged between the power receiving coil and the capacitor. The effect on the capacitor during electric power transmission can be reduced.

First claim

What is claimed is:

1. A power receiving device arranged on a bottom surface of a vehicle body, comprising:
a power receiving coil formed to surround space around a coil central axis extending in a front-back direction of the vehicle body, for receiving electric power from a power transmitting coil in a non-contact manner while facing the power transmitting coil;
a capacitor arranged adjacent to the power receiving coil in the direction in which the coil central axis extends;
a shield arranged between the power receiving coil and the capacitor, the shield including:
a wall portion positioned between the power receiving coil and the capacitor, and
a fixing portion for fixing the wall portion to a housing containing the power receiving coil; and

a fastening tool fixing the power receiving coil to the housing;
wherein a width dimension of the fixing portion in a width direction of the vehicle body is larger than a width dimension of the power receiving coil in the width direction of the vehicle body, and the fixing portion is fixed to the housing by the fastening tool.

2. The power receiving device according to claim 1 , further comprising:
a core around which the power receiving coil is wound;
wherein, in the direction in which the coil central axis extends, a length between the shield and the core is longer than a length between the shield and the capacitor.

3. A power receiving device arranged on a bottom surface of a vehicle body, comprising:
a power receiving coil formed to surround space around a coil central axis extending in a front-back direction of the vehicle body, for receiving electric power from a power transmitting coil in a non-contact manner while facing the power transmitting coil;
a capacitor arranged adjacent to the power receiving coil in the direction in which the coil central axis extends;
a shield arranged between the power receiving coil and the capacitor; and
a core around which the power receiving coil is wound;
wherein, in the direction in which the coil central axis extends, a length between the shield and the core is longer than a length between the shield and the capacitor.

4. A vehicle comprising:
an engine provided in front of a center position in a front-back direction of a vehicle body; and
the power receiving device according to claim 3 ,
wherein, in the front-back direction of the vehicle body, the power receiving device is arranged behind the engine and in front of the center position.

5. The vehicle according to claim 4 , further comprising a catalyst connected to the engine, wherein
in the front-back direction of the vehicle body, the power receiving coil is arranged behind the catalyst, and
in the front-back direction of the vehicle body, the capacitor is arranged behind the power receiving coil.

Assignees

• Toyota Motor Co Ltd

Inventors

• Yuasa Hiroaki

Classifications

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H02J50/12

  of the resonant type · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• B60L53/38

  specially adapted for charging by inductive energy transfer · CPC title