POWER FEEDING SYSTEM FOR VEHICLE, ELECTRICALLY POWERED VEHICLE AND POWER FEEDING APPARATUS FOR VEHICLE

• US 20180093570A1
• Filed: 12/06/2017
• Published: 04/05/2018
• Est. Priority Date: 11/07/2008
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: ICHIKAWA, Shinji
• Granted Patent: US 10,618,411 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 5/005 without mechanical contact between the collector and the power supply line
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• 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 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: G05D 1/0225 involving docking at a fixed facility, e.g. base station or loading bay parking aids B62D15/027
• CPC Class Codes: H02J 50/12 of the resonant type
• 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
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

An IPA-ECU recognizes a position of a power transferring unit by image recognition based on image information from a camera incorporated in a vehicle. Then, the IPA-ECU performs guidance control such that the vehicle is guided to the power transferring unit based on a result of the image recognition (first guidance control). A resonant ECU estimates a distance between the power transferring unit and a power receiving unit based on an electric power feeding condition from the power transferring unit to the power receiving unit. When the power transferring unit comes under a body of the vehicle, an HV-ECU performs guidance control of the vehicle such that a position of the power receiving unit is adjusted to a position of the power transferring unit based on distance information from the resonant ECU (second guidance control).

Claims

1. A power feeding system comprising:

a primary device, and

a vehicle including a secondary device coupling to the primary device in a contactless manner, wherein

the primary device emits low electric power to the vehicle, and

the vehicle can park at a proper position by detecting a received electrical characteristic of low electric power.

2. The power feeding system according to claim 1, wherein

the primary device informs the vehicle of an amount of power in the low electric power to the vehicle.

3. The power feeding system according to claim 1, wherein

the vehicle requests the primary device to start power transfer after stopping at the proper position,

the primary device transmits charging electric power to the vehicle when the primary device receives the request from the vehicle, and

the charging electric power is larger than the low electric power.