Contactless charging system, charging station, and method of controlling contactless charging system

Patent metadata

Field	Value
Publication number	US-9522605-B2
Application number	US-201514595566-A
Country	US
Kind code	B2
Filing date	Jan 13, 2015
Priority date	Jan 22, 2014
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

A charging station transmits weak electric power from an available power transmission device of a plurality of power transmission devices when a second communication unit receives a power transmission request signal from a first communication unit. The charging station performs pairing between a vehicle and the power transmission device with which the vehicle has been aligned, in response to reception of an alignment completion signal from the vehicle. The charging station transmits a charging cancellation signal to a vehicle other than the vehicle that has been aligned with the power transmission device, when the pairing is completed.

First claim

What is claimed is:

1. A contactless charging system comprising a vehicle and a charging station,
said vehicle including
a power reception device, and
a first communication unit,

said charging station including
a second communication unit, and
a plurality of power transmission devices,

said charging station transmitting weak electric power from an available power transmission device of said plurality of power transmission devices, when said second communication unit receives a power transmission request signal from said first communication unit,
said charging station performing a pairing process between said vehicle and the power transmission device with which said vehicle has been aligned, in response to reception of an alignment completion signal from said vehicle,
said charging station transmitting a charging cancellation signal to a vehicle other than said vehicle, when said pairing process is completed.

2. A charging station comprising:
a plurality of power transmission devices each configured to transmit electric power to a power reception device of a vehicle in a contactless manner;
a communication unit for communicating with said vehicle; and
a control unit that controls said plurality of power transmission devices to output weak electric power from an available power transmission device of said plurality of power transmission devices, when said communication unit receives a power transmission request signal from said vehicle,
said control unit further performing a pairing process between said vehicle and the power transmission device with which said vehicle has been aligned, in response to reception of an alignment completion signal from said vehicle,
said control unit causing said communication unit to transmit a charging cancellation signal to a vehicle other than said vehicle, when said pairing process is completed.

3. A method of controlling a contactless charging system, said contactless charging system including a vehicle having a power reception device, and a charging station having a plurality of power transmission devices, said method comprising the steps of:
transmitting weak electric power from an available power transmission device of said plurality of power transmission devices, when a power transmission request signal is transmitted from said vehicle to said charging station;
performing a pairing process between said vehicle and the power transmission device with which said vehicle has been aligned, in response to reception by said charging station of an alignment completion signal from said vehicle; and
transmitting a charging cancellation signal to a vehicle other than said vehicle from said charging station, when said pairing process is completed.

Assignees

• Toyota Motor Co Ltd

Inventors

• Taniguchi Satoshi
• Ichikawa Shinji

Classifications

• B60L53/38

  specially adapted for charging by inductive energy transfer · CPC title

• H02J50/10

  using inductive coupling · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• B60L53/39

  with position-responsive activation of primary coils · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title