WIRELESS POWER SUPPLY DEVICE AND PARKING ASSIST DEVICE

• US 20160243955A1
• Filed: 09/30/2013
• Published: 08/25/2016
• Est. Priority Date: 09/30/2013
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: KONNO, Masaki, FUKUSHIMA, Yoshitake, YOSHIDA, Shigeyuki
• Granted Patent: US 10,000,135 B2
• Time in Patent Office: Days
• 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 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2250/24 by lever actuation
• CPC Class Codes: B60L 2250/26 by pedal actuation
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• 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 53/126 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 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B62D 15/027 Parking aids, e.g. instruction means
• CPC Class Codes: B62D 15/028 Guided parking by providing commands to the driver, e.g. acoustically or optically
• CPC Class Codes: B62D 15/0285 Parking performed automatically
• 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 wireless power supply device includes a marker provided closer to aside where a vehicle enters when parked than a power transmission coil unit housing a power transmission coil. The marker includes at least two segments not parallel to each other, and an end portion of one segment is connected to another segment. The power transmission coil is separated by a predetermined distance from a point of intersection of the two segments in a direction in which the one segment extends.

Claims

1. A wireless power supply device provided on a ground, the device comprising:

a power transmission coil for transmitting electric power to a power receiving coil provided in a vehicle via a wireless connection;

a power transmission coil unit housing the power transmission coil; and

a marker provided closer to a side where the vehicle enters when parked than the power transmission coil unit,

the marker including at least two segments not parallel to each other and having a configuration in which an end portion of one segment is connected to another segment,

the power transmission coil being separated by a predetermined distance from a point of intersection of the two segments in a direction in which the one segment extends.

2. The wireless power supply device according to claim 1, wherein the one segment is at a right angle to the other segment.

3. The wireless power supply device according to claim 1, wherein a straight line continued and extending from the one segment passes through a middle of the power transmission coil.

4. The wireless power supply device according to claim 2, wherein the one segment is longer than the other segment, and the end portion of the one segment is connected to a middle point of the other segment.

5. The wireless power supply device according to claim 1, wherein the end portion of the one segment connected to the other segment is located closer to the power transmission coil than an end portion of a parking frame.

6. A parking assist device used when transmitting electric power from a power transmission coil provided on a ground to a power receiving coil provided in a vehicle via a wireless connection,

wherein a marker is provided closer to a side where the vehicle enters when parked than the power transmission coil, the marker including at least two segments not parallel to each other and having a configuration in which an end portion of one segment is connected to another segment,

the parking assist device comprising:

a camera for imaging the marker to obtain a camera image;

a marker recognition circuit configured to designate a point of intersection of the two segments and a direction in which the one segment extends from the point of intersection based on the camera image; and

a power transmission coil designation circuit configured to designate a position of the power transmission coil separated by a predetermined distance from the point of intersection in the direction in which the one segment extends.

7. The parking assist device according to claim 6, further comprising a viewpoint conversion processing circuit configured to convert a viewpoint of the camera image into a position above the camera to generate a viewpoint converted image,

wherein the marker recognition circuit designates the point of intersection of the two segments and the direction in which the one segment extends from the point of intersection based on the viewpoint converted image generated by the viewpoint conversion processing circuit.