POWER RECEIVING SYSTEM

• US 20160355094A1
• Filed: 03/23/2015
• Published: 12/08/2016
• Est. Priority Date: 03/26/2014
• Status: Abandoned Application

• Current Assignee: Equos Research Co., Ltd. (Aisin Corp.)
• Original Assignee: Equos Research Co., Ltd. (Aisin Corp.)
• Inventors: YAMAKAWA, Hiroyuki, SATOU, Kenichirou
• Application Number:
  US15/118,284
• Publication Number:
  US 20160355094A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 1/06 using only one supply
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2270/145 Structure borne vibrations
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/366 made of ferromagnetic 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 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• 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

Abstract

A power receiving system that receives power supplied wirelessly to a power receiving circuit on a bottom portion of a vehicle via a magnetic field includes a power-receiving-side antenna coil unit including a power-receiving-side antenna coil and a first shield plate that is made of a magnetic material and arranged on a non-transmission direction side, and a second shield plate made of a magnetic material, the second shield plate having a shape that conforms to a recessed and protruding shape of a target region including a recessed portion of a vehicle body bottom surface of the vehicle and being arranged in the target region. The power-receiving-side antenna coil unit is arranged at a position overlapping with the recessed portion in a view in a direction along a reference axis.

Claims

1. A power receiving system that receives power supplied wirelessly to a power receiving circuit provided on a bottom portion of a vehicle, the power receiving system comprising:

a power-receiving-side antenna coil unit including;

a power-receiving-side antenna coil, which is a coil formed by wrapping a conductive wire around a reference axis, the power-receiving-side antenna coil being provided in the power receiving circuit, and being configured to receive power transmitted via a magnetic field, and

a first shield member made of a magnetic material, the first shield member being arranged along a radial direction of the power-receiving-side antenna coil on a non-transmission direction side, which is a side opposite to a transmission direction side and which is one side along the reference axis, of the power-receiving-side antenna coil; and

a second shield member made of a conductive material, the second shield member having a shape conforming to a recessed and protruding shape of a target region including a recessed portion that is recessed upward of a vehicle body bottom surface of the vehicle and being arranged in the target region,

wherein the power-receiving-side antenna coil unit is arranged at a position overlapping with the recessed portion in a view in a direction along the reference axis.

2. The power receiving system according to claim 1, wherein in the view in the direction along the reference axis, the recessed portion is larger than an outer shape of the power-receiving-side antenna coil.

3. The power receiving system according to claim 1, wherein in the view in the direction along the reference axis, the recessed portion is larger than an outer shape of the power-receiving-side antenna coil unit.

4. The power receiving system according to claim 1, wherein the power-receiving-side antenna coil unit is attached to the vehicle such that a lowest position of the power-receiving-side antenna coil unit is higher than a lowest position of the bottom portion of the vehicle.

5. The power receiving system according to claim 2, wherein the power-receiving-side antenna coil unit is attached to the vehicle such that a lowest position of the power-receiving-side antenna coil unit is higher than a lowest position of the bottom portion of the vehicle.

6. The power receiving system according to claim 3, wherein the power-receiving-side antenna coil unit is attached to the vehicle such that a lowest position of the power-receiving-side antenna coil unit is higher than a lowest position of the bottom portion of the vehicle.