NON-CONTACT POWER SUPPLY SYSTEM AND POWER SUPPLY DEVICE

• US 20160280077A1
• Filed: 03/24/2014
• Published: 09/29/2016
• 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 9,840,153 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• 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 3/0069 relating to the isolation, e.g. ground fault or leak current
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/52 characterised by DC-motors
• 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 53/124 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 53/65 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 58/12 : responding to state of charge [SoC]
• 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 power supply device supplies power from a power transmission coil to a power reception coil of a vehicle in a non-contact manner. The power supply device has a communication unit that receives a startup signal for activating the power supply device. A notification unit notifies a state of the power supply device. A controller controls the notification unit based on a detection result of a detection unit. The detection unit detects a non-contact power supply possible state, in which power can be supplied from the power transmission coil in a non-contact manner. The controller sets a notification state of the notification unit to a first notification state, when the non-contact power supply possible state is detected, and sets the notification state of the notification unit to a state that is different from the first notification state, when the non-contact power supply possible state is not detected.

Claims

1. A power supply device that supplies power from a power transmission coil to a power reception coil that is provided to a vehicle in a non-contact manner by at least a magnetic coupling, comprising:

a communication unit configured to receive a startup signal for activating the power supply device from the vehicle that is running by wireless communication;

a notification unit configured to notify a state of the power supply device;

a detection unit configured to detect the state of the power supply device based on the startup signal; and

a controller configured to control the notification unit based on a detection result of the detection unit;

the detection unit being configured to detect a non-contact power supply possible state, which represents a state in which the power can be supplied from the power transmission coil in a non-contact manner,

the controller being configured to set a notification state of the notification unit to a first notification state, when the detection unit detects the non-contact power supply possible state, and to set the notification state of the notification unit to a state that is different from the first notification state, when the detection unit is not detecting the non-contact power supply possible state.

2. The power supply device according to claim 1, wherein

the detection unit is configured to detect a recoverable state, which represents a state in which a user of the vehicle is able to recover from a state in which the power cannot be supplied in a non-contact manner to the non-contact power supply possible state, and

the controller being configured to set the notification state of the notification unit to a second notification state, when the detection unit detects the recoverable state.

3. The power supply device according to claim 1, further comprising

a power supply unit configured to supply power via a charging cable that is connected to the vehicle,

the detection unit being configured to detect a contact power supply possible state, which represents a state in which the power cannot be supplied in a non-contact manner, and in which the power can be supplied by the power supply unit, and

the controller being configured to set the notification state of the notification unit to a third notification state, when the detection unit detects the contact power supply possible state.

4. The power supply device according to claim 1, wherein

the detection unit is configured to detect a recoverable state, which represents a state in which a user of the vehicle is able to recover from a state in which power cannot be supplied in a non-contact manner to the non-contact power supply possible state, and to detect a power supply disabled state, which represents a state that is not the recoverable state, and a state in which a battery of the vehicle cannot be charged by the power supply device, and

the controller is configured to set the notification state of the notification unit to a fourth notification state, when the detection unit detects the power supply disabled state.

5. The power supply device according to claim 4, wherein

the controller is configured not to transmit the detection result of the detection unit to the vehicle, if the detection unit has detected the power supply disabled state.

6. The power supply device according to claim 1, further comprising

a recording unit configured to record the identification information that is set for each of the vehicles,

the communication unit being configured to receive a signal containing the identification information from the running vehicle by wireless communication, and

the controller is configured not to notify the state of the power supply device by the notification unit, when the identification information that is recorded by the recording unit and the identification information that is contained in a signal that is received by the communication unit do not match.

8. The power supply device according to claim 2, further comprising

a power supply unit configured to supply power via a charging cable that is connected to the vehicle,

the detection unit being configured to detect a contact power supply possible state, which represents a state in which the power cannot be supplied in a non-contact manner, and in which the power can be supplied by the power supply unit, and

the controller being configured to set the notification state of the notification unit to a third notification state, when the detection unit detects the contact power supply possible state.

9. The power supply device according to claim 2, wherein

the detection unit is configured to detect a recoverable state, which represents a state in which a user of the vehicle is able to recover from a state in which power cannot be supplied in a non-contact manner to the non-contact power supply possible state, and to detect a power supply disabled state, which represents a state that is not the recoverable state, and a state in which a battery of the vehicle cannot be charged by the power supply device, and

the controller is configured to set the notification state of the notification unit to a fourth notification state, when the detection unit detects the power supply disabled state.

10. The power supply device according to claim 9, wherein

the controller is configured not to transmit the detection result of the detection unit to the vehicle, if the detection unit has detected the power supply disabled state.

11. The power supply device according to claim 2, further comprising

a recording unit configured to record the identification information that is set for each of the vehicles,

the communication unit being configured to receive a signal containing the identification information from the running vehicle by wireless communication, and

the controller is configured not to notify the state of the power supply device by the notification unit, when the identification information that is recorded by the recording unit and the identification information that is contained in a signal that is received by the communication unit do not match.

12. The power supply device according to claim 3, further comprising

a recording unit configured to record the identification information that is set for each of the vehicles,

the communication unit being configured to receive a signal containing the identification information from the running vehicle by wireless communication, and

the controller is configured not to notify the state of the power supply device by the notification unit, when the identification information that is recorded by the recording unit and the identification information that is contained in a signal that is received by the communication unit do not match.

13. The power supply device according to claim 4, further comprising

a recording unit configured to record the identification information that is set for each of the vehicles,

the communication unit being configured to receive a signal containing the identification information from the running vehicle by wireless communication, and

the controller is configured not to notify the state of the power supply device by the notification unit, when the identification information that is recorded by the recording unit and the identification information that is contained in a signal that is received by the communication unit do not match.

14. The power supply device according to claim 5, further comprising

a recording unit configured to record the identification information that is set for each of the vehicles,

the communication unit being configured to receive a signal containing the identification information from the running vehicle by wireless communication, and

the controller is configured not to notify the state of the power supply device by the notification unit, when the identification information that is recorded by the recording unit and the identification information that is contained in a signal that is received by the communication unit do not match.

15. The power supply device according to claim 3, wherein

the detection unit is configured to detect a recoverable state, which represents a state in which a user of the vehicle is able to recover from a state in which power cannot be supplied in a non-contact manner to the non-contact power supply possible state, and to detect a power supply disabled state, which represents a state that is not the recoverable state, and a state in which a battery of the vehicle cannot be charged by the power supply device, and

the controller is configured to set the notification state of the notification unit to a fourth notification state, when the detection unit detects the power supply disabled state.

7. 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 at least a magnetic coupling, the non-contact power supply system comprising:

the vehicle comprising;

a communication unit configured to receive a startup signal for activating the power supply device from the vehicle that is running by wireless communication;

a notification unit configured to notify a state of the power supply device; and

a vehicle side controller configured to control the communication unit and the notification unit,

the power supply device comprising;

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

a detection unit configured to detect the state of the power supply device based on the startup signal; and

a power supply device side controller configured to control means for transmitting a signal containing the detection result of the detection unit by controlling the power supply device side communication unit; and

the detection unit being configured to detect a non-contact power supply possible state, which represents a state in which power can be supplied from the power transmission coil in a non-contact manner,

the vehicle side controller being configured to set a notification state of the notification unit to a first notification state, when the detection unit detects the non-contact power supply possible state, and to set the notification state of the notification unit to a state that is different from the first notification state, when the detection unit is not detecting the non-contact power supply possible state.