Non-contact power supply system

• US 10,005,369 B2
• Filed: 03/24/2014
• Issued: 06/26/2018
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Tsukamoto, Yukinori
• Primary Examiner(s): Henze-Gongola, David V
• Application Number:
  US14/777,780
• Publication Number:
  US 20160297312A1
• Time in Patent Office: 1,555 Days
• Field of Search: 320108, 320109
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/00 Electrical machine types; Structures or applications thereof
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/30 Parking brake position
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2250/10 by alarm
• 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 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: B60L 53/60 Monitoring or controlling charging stations
• 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 58/13 Maintaining the SoC within a determined range
• CPC Class Codes: H02J 50/10 : using inductive coupling
• 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: 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 electricity in a non-contact manner between a power transmission coil of a power supply device 1 and a power reception coil of a vehicle. The vehicle 2 has a wireless communication unit that transmits to the power supply device a startup signal that starts up the power supply device. The power supply device has a reception unit that receives the startup signal. A controller controls the power supply device based on the startup signal. The communication unit transmits a first startup signal when the vehicle is traveling, and transmits a second startup signal when the vehicle is stopped. The controller controls the electricity supply device according to a first control flow when the first startup signal has been received, and controls the power supply device according to a second control flow when the second startup signal has been received.

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 transmitter configured to transmit a startup signal that activates the power supply device by wireless communication from the vehicle to the power supply device;

and

the power supply device comprising

a receiver configured to receive the startup signal;

a controller configured to control the power supply device, based on the startup signal received by the receiver; and

a determination circuit configured to determine whether or not the vehicle is parked in a predetermined parking position of the power supply device,

the transmitter being configured to transmit a first startup signal when the vehicle is traveling prior to entering a parking area and to transmit a second startup signal when the vehicle is stopped, the first and second startup signals being mutually exclusive,

the controller being configured to control the power supply device according to a first control flow when receiving the first startup signal, and to control the power supply device according to a second control flow when receiving the second startup signal, and the controller being configured to control the power supply device according to the first control flow after activating the power supply device from a sleep state, when the determination circuit determines that the vehicle is not parked in the predetermined parking position after the receiver receives the first startup signal, and does not control the power supply device according to the first control flow after activating the power supply device from a sleep state and returns the power supply device to a sleep state, when the determination circuit determines that the vehicle is parked in the predetermined parking position after the receiver receives the first startup signal.

2. The non-contact power supply system according to claim 1, wherein the power supply device further comprises a diagnosis circuit configured to diagnose a state of whether or not the power supply device is capable of supplying power;

the first control flow comprising a control according to the diagnosis circuit; and

the second control flow not comprising a control according to the diagnosis circuit.

3. The non-contact power supply system according to claim 2, further comprising a notification circuit configured to notify a diagnosis results of the diagnosis circuit, the first control flow comprising a control by the notification circuit, and the second control flow not comprising a control by the notification circuit.

4. The non-contact power supply system according to claim 1, wherein the transmitter is configured to transmit a request signal for starting the power supply to the power supply device, when a switch to start the engine or the motor of the vehicle is in the OFF state, and, a lock mechanism for locking a rotation of wheels of the vehicle is activated, and the controller is configured to start the power supply from the power transmission coil to the power reception coil, by receiving the request signal with the receiver.

5. The non-contact power supply system according to claim 2, wherein the transmitter is configured to transmit a request signal for starting the power supply to the power supply device, when a switch to start the engine or the motor of the vehicle is in the OFF state, and, a lock mechanism for locking a rotation of wheels of the vehicle is activated, and the controller is configured to start the power supply from the power transmission coil to the power reception coil, by receiving the request signal with the receiver.

6. The non-contact power supply system according to claim 3, wherein the transmitter is configured to transmit a request signal for starting the power supply to the power supply device, when a switch to start the engine or the motor of the vehicle is in the OFF state, and, a lock mechanism for locking a rotation of wheels of the vehicle is activated, and the controller is configured to start the power supply from the power transmission coil to the power reception coil, by receiving the request signal with the receiver.