NON-CONTACT POWER SUPPLY SYSTEM

• US 20160288665A1
• Filed: 03/24/2014
• Published: 10/06/2016
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: TSUKAMOTO, Yukinori
• Granted Patent: US 10,343,540 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2240/622 by satellite navigation
• CPC Class Codes: B60L 2250/16 by display
• 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 53/124 Detection or removal of foreign bodies
• 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 53/37 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: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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: H02J 7/0042 characterised by the mechanical construction
• 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

A non-contact power supply system supplies power in a non-contact manner between a power transmission coil of a power supply device and a power reception coil of a vehicle. A vehicle side communication unit permits power transmission from the power transmission coil to the power reception coil with respect to one of several power supply devices and transmits a permission signal including identification information of the power supply device. A determination unit determines if a paired communication has been established between the vehicle and the power supply device. The power supply device has a communication unit that receives the permission signal. A controller controls power from the power transmission coil to the power reception coil when the identification information of a power supply device and the identification information in a permission signal match. The determination unit determines that a paired communication has been established when power is detected.

Claims

1. A non-contact power supply system that supplies power between a power reception coil that is provided to a vehicle and a power transmission coil that is provided to a power supply device in a non-contact manner by means of at least a magnetic coupling, the non-contact power supply system comprising

the vehicle comprising:

a vehicle side communication unit configured to permit power transmission from the power transmission coil to the power reception coil with respect to one power supply device among a plurality of the power supply devices and transmits a permission signal including identification information of the one power supply device;

a power detection unit configured to detect the power that is received by the power reception coil; and

a determination unit configured to determine whether or not a paired communication has been established between the vehicle and the power supply device,

the power supply device comprising;

a power supply device side communication unit configured to receive the permission signal; and

a controller configured to output power from the power transmission coil to the power reception coil,

the controller being configured to output power from the power transmission coil to the power reception coil, when the identification information of the power supply device and the identification information that is included in the permission signal that is received by the power supply device side communication unit match, and

the determination unit being configured to determine that a paired communication has been established between the one power supply device and the vehicle, when power is detected by the power detection unit.

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

the vehicle further comprises a permission signal generation unit being configured to specify the one power supply device and to generate the permission signal with respect to the specified one power supply device, based on a signal that is transmitted from the power supply device side communication unit to the vehicle side communication unit.

3. The non-contact power supply system according to claim 2, wherein

the power supply device further comprises a coil detection unit being configured to detect that the power reception coil is within a range that the power transmission coil is capable of transmitting power,

the controller is configured to transmit an advance notice signal for controlling the power supply device side communication unit to supply power in the non-contact manner, when the coil detection unit detects that the power reception coil is within a range that the power transmission coil is capable of transmitting power, and

the permission signal generation unit is configured to specify the power supply device in which the reception order of the advance notice signal by the vehicle side communication unit is a specific order as the one power supply device.

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

the vehicle further comprises a permission signal generation unit is configured to specify the one power supply device and generates the permission signal with respect to the specified one power supply device, based on a signal that is transmitted from the power supply device side communication unit to the vehicle side communication unit,

the permission signal generation unit, in the case that a second identification information of a second power supply device is received from the second power supply device after a first identification information of a first power supply device is received from the first power supply device, specifies the first power supply device as the one power supply device and generates the permission signal including the first identification information, and

the determination unit is configured to determine that a paired communication has been established between the first power supply device and the vehicle, when power that is transmitted from the power transmission coil of the first power supply device is detected by the power detection unit.

5. The non-contact power supply system according to claim 2, wherein

the vehicle further comprises a permission signal generation unit is configured to specify the one power supply device and generates the permission signal with respect to the specified one power supply device, based on a signal that is transmitted from the power supply device side communication unit to the vehicle side communication unit,

the permission signal generation unit, in the case that a second identification information of a second power supply device is received from the second power supply device after a first identification information of a first power supply device is received from the first power supply device, specifies the first power supply device as the one power supply device and generates the permission signal including the first identification information, and

the determination unit is configured to determine that a paired communication has been established between the first power supply device and the vehicle, when power that is transmitted from the power transmission coil of the first power supply device is detected by the power detection unit.

6. The non-contact power supply system according to claim 3, wherein

the vehicle further comprises a permission signal generation unit is configured to specify the one power supply device and generates the permission signal with respect to the specified one power supply device, based on a signal that is transmitted from the power supply device side communication unit to the vehicle side communication unit,

the permission signal generation unit, in the case that a second identification information of a second power supply device is received from the second power supply device after a first identification information of a first power supply device is received from the first power supply device, specifies the first power supply device as the one power supply device and generates the permission signal including the first identification information, and

the determination unit is configured to determine that a paired communication has been established between the first power supply device and the vehicle, when power that is transmitted from the power transmission coil of the first power supply device is detected by the power detection unit.