Non-contact electric power transmission system

• US 9,834,103 B2
• Filed: 01/09/2015
• Issued: 12/05/2017
• Est. Priority Date: 01/31/2014
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ichikawa, Shinji, Taniguchi, Satoshi
• Primary Examiner(s): Grant, Robert
• Application Number:
  US14/593,256
• Publication Number:
  US 20150217650A1
• Time in Patent Office: 1,061 Days
• Field of Search: 320109
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/30 Parking brake position
• CPC Class Codes: B60L 2260/26 Transition between different drive modes
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• 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 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/31 Charging columns specially adapted for electric vehicles
• CPC Class Codes: B60L 53/35 Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/39 with position-responsive activation of primary coils
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: B60L 53/68 Off-site monitoring or control, e.g. remote control
• 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
• 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 30/12 : Remote or cooperative charging
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A vehicle emits a first signal when the vehicle moves after reception of electric power from an electric power transmission device by an electric power reception device is completed and when a preparatory condition for the vehicle to move is satisfied after reception of electric power from the electric power transmission device by the electric power reception device is completed. When a charging station receives the first signal, the charging station emits a second signal notifying that a state allows charging.

Claims

1. A non-contact electric power transmission system in which electric power is transmitted between a vehicle and a charging station in a non-contact manner, comprising:

the charging station, including an electric power transmission device that transmits electric power in a non-contact manner; and

the vehicle, including an electric power reception device that receives electric power in a non-contact manner and a power storage device, the vehicle emitting a first signal when the vehicle moves and a preparatory condition for the vehicle to move is satisfied, after charging of the power storage device using electric power from the electric power transmission device is completed,

wherein the charging station emits a second signal notifying that a state allows charging when the charging station receives the first signal.

2. The non-contact electric power transmission system according to claim 1, wherein

the vehicle emits the first signal when a speed of the vehicle exceeds a prescribed speed.

3. The non-contact electric power transmission system according to claim 1, wherein

the vehicle emits the first signal when a value obtained by summing speeds of the vehicle exceeds a prescribed value.

4. The non-contact electric power transmission system according to claim 1, wherein

the vehicle emits the first signal when a current position of the vehicle obtained from a GPS system is distant from a position of a parking frame of the charging station by a prescribed distance or more.

5. The non-contact electric power transmission system according to claim 1, wherein

the vehicle emits the first signal when a shift position of the vehicle is changed from a parking position to a drive position.