Contactless power supply device

• US 9,539,908 B2
• Filed: 03/20/2014
• Issued: 01/10/2017
• Est. Priority Date: 04/12/2013
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Yoshida, Shigeyuki, Asai, Akihiro
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): TRAN, THAI H
• Application Number:
  US14/782,962
• Publication Number:
  US 20160052403A1
• Time in Patent Office: 1,027 Days
• Field of Search: 307/104, 180/60, 180/65.1
• US Class Current: 1/1
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 3/0023 Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
• CPC Class Codes: B60L 50/50 using propulsion power supplied by batteries or fuel cells
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 50/60 using power supplied by batteries in combination with fuel cells B60L50/75
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• 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: B60L 53/22 Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B62D 25/20 Floors or bottom sub-units sub-frames for mounting engine or suspensions B62D21/11; drip trays F16N31/006
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• 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 50/80 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 10/72 : Electric energy management in electromobility
• 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
• CPC Class Codes: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A power receiving coil (22) is installed at a front portion on a lower surface of a floor panel (40) close to steered front wheels (W) and elongated across a lower open portion of a tunnel portion (42) located in the center of a vehicle (1). Therefore, the power receiving coil (22) can be accurately aligned with a power transmission coil (12) on the load surface side to face each other with a sense of steering in such a manner as to align the center of the vehicle with the power transmission coil (12) when the vehicle (1) advances to a predetermined stop position in a parking space (2).

Claims

1. A contactless power supply device comprising a power supply portion located in a parking space and a power receiving portion installed on a lower surface of a floor panel of a vehicle so as to supply electric power to the vehicle without contact through magnetic connection between the power supply portion and the power receiving portion,

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

the power receiving portion including a junction box on an upper surface thereof,

the power receiving portion being placed at a front portion on the lower surface of the floor panel and elongated across a lower open portion of the tunnel portion,

the junction box being arranged inside the tunnel portion.

2. The contactless power supply device according to claim 1, wherein the tunnel portion includes a through-hole on a top wall thereof into which a wire harness is inserted to transmit electric power therethrough from a battery installed on the lower surface of the floor panel or the junction box to a room accessory installed in the interior room.

3. The contactless power supply device according to claim 1, wherein a wire harness for transmitting electric power from a battery installed on the lower surface of the floor panel to a motor unit installed in a front compartment of the vehicle passes above the power receiving portion and is arranged along an inner side of the tunnel portion in the vehicle front-rear direction.