Vehicle with an electric storage section, and charge-discharge system including the vehicle and an energy management equipment

• US 9,387,767 B2
• Filed: 07/31/2012
• Issued: 07/12/2016
• Est. Priority Date: 10/31/2011
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ishii, Daisuke, Kinomura, Shigeki, Mizuno, Tomoyuki, Ogawa, Takashi, Sawada, Hiroki, Suzuki, Yasuo
• Primary Examiner(s): Williams, Arun
• Application Number:
  US14/355,034
• Publication Number:
  US 20140327408A1
• Time in Patent Office: 1,442 Days
• US Class Current: 1/1
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2210/14 Boost converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/427 Voltage
• CPC Class Codes: B60L 2240/429 Current
• CPC Class Codes: B60L 2240/44 related to combustion engines
• CPC Class Codes: B60L 2240/527 Voltage
• CPC Class Codes: B60L 2240/529 Current
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 3/0084 relating to control modules
• 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 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/50 using propulsion power supplied by batteries or fuel cells
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 50/66 : Arrangements of batteries
• CPC Class Codes: B60L 53/14 : Conductive energy transfer
• CPC Class Codes: B60L 53/16 : Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/18 : Cables specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/22 : Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/305 : Communication interfaces
• CPC Class Codes: B60L 53/51 : Photovoltaic means
• CPC Class Codes: B60L 53/53 : Batteries
• CPC Class Codes: B60L 53/63 : in response to network capacity
• CPC Class Codes: B60L 53/65 : involving identification of vehicles or their battery types
• CPC Class Codes: B60L 55/00 : Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: B60L 58/12 : responding to state of charge [SoC]
• CPC Class Codes: B60L 58/20 : having different nominal voltages
• CPC Class Codes: B60L 58/40 : for controlling a combination of batteries and fuel cells
• CPC Class Codes: H02J 2310/48 : for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 3/322 : the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
• CPC Class Codes: H02J 5/00 : Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/00304 : Overcurrent protection
• CPC Class Codes: H02J 7/0048 : Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/02 : for charging batteries from ac mains by converters
• CPC Class Codes: Y02E 60/00 : Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• 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: Y02T 90/40 : Application of hydrogen technology to transportation, e.g. using fuel cells
• CPC Class Codes: Y04S 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• 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 10 according to the embodiment of the present invention is applied to a charge-discharge system CDS. The charge-discharge system includes the vehicle 10, an electric power cable 20, a plug-in station 30, a HEMS 40, and a commercial power supply 50. From the HEMS 40 to the vehicle 10, a request for charge to charge an electric storage device 11 and a request for discharge to allow an external electric load to use an electric power of the electric storage device 11 are transmitted. When a request is changed from the request for charge to the request for discharge, or vice versa, the vehicle 10 realizes a charge-discharge stop state in which neither a charging operation nor a discharging operation is performed without directly changing from the charging operation to the discharging operation, or vice versa.

Claims

1. A vehicle comprising:

an electric storage section, which can be charged using an electric power supplied from an external power supply external to said vehicle and which can be discharged by supplying an electric power to an external electric load external to said vehicle; and

a control unit, which performs a charging operation to charge said electric storage section using said electric power supplied from said external power supply in response to an obtained request for charge, and which performs a discharging operation to supply said electric power from said electric storage section to said external electric load in response to an obtained request for discharge;

wherein, said control unit is configured so as to stop said charging operation to realize a charge-discharge stop state in which neither said charging operation nor said discharging operation is performed when said control unit obtains said request for discharge while said charging operation is being performed, and so as to start said discharging operation in response to a newly obtained request when said control unit newly obtains said request for discharge after said charge-discharge stop state is realized.

2. The vehicle according to claim 1, wherein,

said control unit is configured so as to determine whether or not said control unit needs to continue said charging operation when said control unit newly obtains said request for discharge during said charging operation, so as to continue said charging operation when it is determined that said control unit needs to continue said charging operation, and so as to realize said charge-discharge stop state when it is determined that the control unit does not need to continue said charging operation.

3. The vehicle according to claim 1, wherein,

when said control unit newly obtains said request for charge in said charge-discharge stop state, said control unit is configured so as to start said charging operation in response to said newly obtained request.

4. The vehicle according to claim 1, wherein,

said control unit is configured so as to receive said request for charge and said request for discharge from an energy management system external to said vehicle.

5. The vehicle according to claim 4, wherein,

said control unit is configured so as to generate said request for charge based on a state of said electric storage section.

6. A vehicle comprising:

an electric storage section, which can be charged using an electric power supplied from an external power supply external to said vehicle, and which can be discharged by supplying an electric power to an external electric load external to said vehicle; and

a control unit, which performs a charging operation to charge said electric storage section using said electric power supplied from said external power supply in response to an obtained request for charge, and which performs a discharging operation to supply said electric power from said electric storage section to said external electric load in response to an obtained request for discharge;

wherein,

said control unit is configured so as to stop said discharging operation to realize a charge-discharge stop state in which neither said charging operation nor said discharging operation is performed when said control unit obtains said request for charge while said discharging operation is being performed, and so as to start said charging operation in response to a newly obtained request for charge when said control unit newly obtains said request for charge after said charge-discharge stop state is realized.

7. The vehicle according to claim 6, wherein,

when said control unit newly obtains said request for charge during said discharging operation, said control unit is configured so as to determine whether or not said control unit needs to continue said discharging operation, so as to continue said discharging operation when it is determined that said control unit needs to continue said discharging operation, and so as to realize said charge-discharge stop state when it is determined that said control unit does not need to continue said discharging operation.

8. The vehicle according to claim 6, wherein,

when said control unit newly obtains said request for discharge in said charge-discharge stop state, said control unit is configured so as to start said discharging operation in response to said newly obtained request.

9. The vehicle according to claim 6, wherein,

said control unit is configured so as to receive said request for charge and said request for discharge from an energy management system external to said vehicle.

10. The vehicle according to claim 9, wherein,

said control unit is configured so as to generate said request for charge based on a state of said electric storage section.

11. A charge-discharge system including a vehicle, and an energy management equipment, wherein,

said vehicle includes:

an electric storage section, which can be charged using an electric power supplied from an external power supply external to said vehicle, and which can be discharged by supplying an electric power to an external electric load external to said vehicle; and

a control unit, which performs a charging operation to charge said electric storage section using said electric power supplied from said external power supply in response to an obtained request for charge, and which performs a discharging operation to supply said electric power from said electric storage section to said external electric load in response to an obtained request for discharge; and

said energy management equipment includes;

an electric power state change section which selectively realizes one of an electric power supplying state in which said electric power from said external power supply is capable of being supplied to said electric storage section of said vehicle and an electric power consuming state in which said electric power from said electric storage section of said vehicle is capable of being supplied to said external electric load; and

a management section, which provides said request for charge or said request for discharge to said control unit of said vehicle, which makes said electric power state change section realize said electric power supplying state when said management section provides said request for charge to said control unit, and which makes said electric power state change section realize said electric power consuming state when said management section provides said request for discharge to said control unit;

and wherein,

said control unit of said vehicle is configured

so as to stop said charging operation to realize a charge-discharge stop state in which neither said charging operation nor said discharging operation is performed, when said control unit obtains said request for discharge while said charging operation is being performed, and so as to start said discharging operation in response to a newly obtained request when said control unit newly obtains said request for discharge after said charge-discharge stop state is realized, and

so as to stop said charging operation to realize said charge-discharge stop state, when said control unit obtains said request for charge while said discharging operation is being performed, and so as to start said charging operation in response to a newly obtained request when said control unit newly obtains said request for charge after said charge-discharge stop state is realized; and

said management section of said energy management equipment is configured

so as to provide a request to stop said charging operation to said control unit before providing said request for discharge in a case in which it provides said request for discharge to said control unit after providing said request for charge to said control unit, and

so as to provide a request to stop said discharging operation to said control unit before providing said request for charge in a case in which it provides said request for charge to said control unit after providing said request for discharge to said control unit.

12. The charge-discharge system according to claim 11, wherein,

said control unit is configured, when said request for discharge is newly obtained during said charging operation, so as to continue said charging operation in a case in which said charging operation was started based on said request for charge supplied from said management section, and so as to realize said charge-discharge stop state in a case in which said charging operation was started based on a request for charge other than said request for charge supplied from said management section.

13. The charge-discharge system according to claim 11, wherein,

said control unit is configured, when said request for charge is newly obtained during said discharging operation, so as to continue said discharging operation in a case in which said discharging operation was started based on said request for discharge supplied from said management section, and so as to realize said charge-discharge stop state in a case in which said discharging operation was started based on a request for discharge other than said request for discharge supplied from said management section.