ELECTRIC POWER TRANSMISSION DEVICE, VEHICLE, AND NON-CONTACT ELECTRIC POWER TRANSMISSION AND RECEPTION SYSTEM

• US 20180029482A1
• Filed: 10/11/2017
• Published: 02/01/2018
• Est. Priority Date: 11/24/2011
• 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 10,513,191 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/14 Synchronous machines
• CPC Class Codes: B60L 2240/30 Parking brake position
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2260/44 by parameter estimation
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• 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 53/122 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 53/305 Communication interfaces
• CPC Class Codes: B60L 53/31 Charging columns specially adapted for electric vehicles
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 58/12 : responding to state of charge [SoC]
• CPC Class Codes: B60L 7/14 : for vehicles propelled by ac motors
• CPC Class Codes: H02J 2310/48 : for electric vehicles [EV] or hybrid vehicles [HEV]
• 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: H02J 7/00034 : Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• 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
• 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 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

An electric power transmission device includes an electric power transmission portion, a first communication portion, and a first control device controlling the electric power transmission portion and the first communication portion. A vehicle includes an electric power reception portion, a second communication portion, and a second control device controlling the electric power reception portion and the second communication portion. The first control device and the second control device determine whether or not to cause the electric power transmission portion to transmit electric power based on an instruction from a user which is provided after the user is notified of a status of electric power reception in the electric power reception portion or an estimated status of electric power reception in the electric power reception portion.

Claims

1. A method of transmitting electric power comprising:

establishing communication between a electric power transmission device and a electric power reception device;

positioning the electric power reception device with the electric power transmission device to be properly positioned after establishing communication;

checking whether the electric power transmission device and the electric power reception device are properly aligned after completion of positioning; and

starting transmission of electric power from the electric power transmission device to the electric power reception device after confirming that the electric power transmission device and the electric power reception device are properly aligned.

2. The method of claim 1, further comprising:

transmitting a request signal for transmitting electric power from the electric power reception device to the electric power transmission device after confirming that the electric power transmission device and the electric power reception device are properly aligned,

wherein the electric power transmission device transmits electric power to the power reception device after receiving the request signal.

3. The method of claim 1, wherein the positioning includes:

transmitting a positioning request signal from the electric power reception device to the electric power transmission device; and

transmitting low electric power from the electric power transmission device after receiving the request signal.

4. The method of claim 1, wherein the checking includes:

transmitting an alignment confirmation request signal from the electric power reception device to the electric power transmission device; and

transmitting low electric power from the electric power transmission device after receiving the alignment confirmation request signal.

5. The method of claim 4, wherein the low electric power is lower than electric power which is transmitted from the electric power transmission device after confirming that the electric power transmission device and the electric power reception device are properly aligned.