CONTACTLESS POWER SUPPLY DEVICE

• US 20160082847A1
• Filed: 03/20/2014
• Published: 03/24/2016
• Est. Priority Date: 04/12/2013
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: ASAI, Akihiro
• Granted Patent: US 10,144,300 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 1/04 of the electric storage means for propulsion exchanging batteries for electric propulsion of vehicles B60L53/80; for auxiliary purposes only B60R16/04; supplying batteries to, or removing batteries from, vehicles B60S5/06
• CPC Class Codes: B60K 2001/0438 Arrangement under the floor
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• 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 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60R 16/0207 Wire harnesses
• CPC Class Codes: B60Y 2410/115 Electric wiring; Electric connectors
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• 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 power receiving portion is installed in a middle in a vehicle width direction at a front portion on a lower surface of a floor panel close to steered front wheels. Therefore, the power receiving portion can be accurately aligned with a power supply portion on the road surface side so as to face each other with a sense of steering in such a manner as to align the center of a vehicle with the power supply portion when the vehicle advances to a predetermined stop position in a parking space. Moreover, a high-current system wire harness for transmitting electric power from a battery located on the lower surface of the floor panel to a motor unit in a front compartment passes above the power receiving portion so as to improve the safety of the wire harness.

Claims

1. A contactless power supply device comprising:

a power receiving portion placed in a middle in a vehicle width direction at a front portion on a lower surface of a floor panel of a vehicle;

a power supply portion located in a parking space to supply electric power to the vehicle without contact through magnetic connection between the power supply portion and the power receiving portion;

a battery placed on the floor panel; and

a wire harness for transmitting electric power from the battery to a motor unit placed in a front compartment of the vehicle, the wire harness passing above the power receiving portion and extending in a vehicle front-rear direction.

2. The contactless power supply device according to claim 1, wherein:

the floor panel includes, in a middle thereof in the vehicle width direction, a tunnel portion protruding toward an interior room and extending in the vehicle front-rear direction;

the power receiving portion is elongated across a lower open portion of the tunnel portion; and

the wire harness is arranged along an inside of the tunnel portion.

3. A power receiving portion for a contactless power supply device installed on a lower surface of a floor panel of a vehicle to which electric power is supplied from a power supply portion located in a parking space without contact through magnetic connection between the power supply portion and the power receiving portion,

the power receiving portion being placed in a middle in a vehicle width direction at a front portion on the lower surface of the floor panel of the vehicle,

wherein a wire harness for transmitting electric power from a battery placed on the lower surface of the floor panel to a motor unit placed in a front compartment of the vehicle passes above the power receiving portion and extends in a vehicle front-rear direction.

4. The power receiving portion for a contactless power supply device according to claim 3, wherein:

the floor panel includes, in a middle thereof in the vehicle width direction, a tunnel portion protruding toward an interior room and extending in the vehicle front-rear direction;

the power receiving portion is elongated across a lower open portion of the tunnel portion; and

the wire harness is arranged along an inside of the tunnel portion.