ELECTRIC POWER SUPPLY SYSTEM AND ELECTRIC POWER SUPPLY METHOD

• US 20120187900A1
• Filed: 08/30/2010
• Published: 07/26/2012
• Est. Priority Date: 08/31/2009
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Murawaka, Katsutoshi
• Granted Patent: US 9,041,348 B2
• Time in Patent Office: Days
• US Class Current: 320/106
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2260/52 drive range estimation, e.g. of estimation of available travel distance
• CPC Class Codes: B60L 2260/54 Energy consumption estimation
• CPC Class Codes: B60L 2260/58 Departure time prediction
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 53/18 Cables specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/53 Batteries
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• 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 58/13 Maintaining the SoC within a determined range
• CPC Class Codes: B60L 58/15 Preventing overcharging
• CPC Class Codes: B60L 7/12 for vehicles propelled by dc motors
• CPC Class Codes: H02J 3/38 Arrangements for parallely feeding a single network by two or more generators, converters or transformers
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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 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 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 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

An electric power supply system includes a connecting device that connects a secondary battery provided in a vehicle to a building, and a control apparatus that i) identifies the type of the vehicle that is connected to the connecting device, the type of the secondary battery, or the type of electric power that is distinguishable by the charging source of the electric power stored in the secondary battery, ii) determines a preset electric power supply method based on the identification results, and iii) controls a supply of electric power from the secondary battery to the building based on the determined electric power supply method.

Claims

1. An electric power supply system comprising:

a connecting device that connects a secondary battery provided in a vehicle to a building; and

a control apparatus that i) identifies the type of the vehicle that is connected to the connecting device, the type of the secondary battery, or the type of electric power that is distinguishable by the charging source of the electric power stored in the secondary battery, ii) determines a preset electric power supply method based on the identification results, and iii) controls a supply of electric power from the secondary battery to the building based on the determined electric power supply method;

wherein

the control apparatus identifies the type of the secondary battery or the type of the electric power stored in the secondary battery by obtaining information indicative of the type of the secondary battery or the type of electric power stored in the secondary battery from the vehicle connected to the connecting device; and

the control apparatus determines the order of priority in which i) electric power charged from a household power supply of the building, of the charging electric power in the secondary battery, and ii) electric power charged from regenerated electric power that is regenerated while the vehicle is running, are to be supplied to the building, and controls the supply of electric power according to that determined order of priority.

2. The electric power supply system according to claim 1, wherein the control apparatus controls the supply of electric power such that all of the electric power in the secondary battery is supplied to the building when the type of the vehicle is identified as a hybrid vehicle.

3. The electric power supply system according to claim 1, wherein the control apparatus controls the supply of electric power such that a portion of all of the electric power charged to the secondary battery is supplied to the building when the type of the vehicle is identified as a hybrid vehicle and the amount of fuel remaining in the vehicle is less than a predetermined amount.

4. The electric power supply system according to claim 1, wherein the control apparatus i) obtains information indicative of the type of the vehicle, the amount of fuel remaining in the vehicle, and a charging amount of the secondary battery, ii) determines the amount of electric power to supply based on the obtained information, and iii) controls the supply of electric power such that the determined amount of electric power to supply is supplied to the building.

6. The electric power supply system according to claim 1, wherein the type of electric power stored in the secondary battery includes i) electric power charged from a household power supply of the building, and ii) electric power charged from regenerated electric power that is regenerated while the vehicle is running.

8. The electric power supply system according to claim 1, wherein the control apparatus controls the supply of electric power such that electric power that remains after electric power required for running the vehicle is subtracted from the electric power charged from the regenerated electric power, is preferentially supplied.

9. The electric power supply system according to claim 8, wherein the control apparatus controls the supply of electric power such that refresh discharging electric power of the secondary battery is supplied as a first priority.

10. The electric power supply system according to claim 1, further comprising:

an input device that is provided in the building for inputting information relating to the vehicle,

wherein the control apparatus controls the supply of electric power based on the information input into the input device.

11. The electric power supply system according to claim 1, wherein after the vehicle has finished being used each day, the control apparatus controls the supply of electric power such that electric power remaining in the secondary battery is supplied to the building during daytime electric utility hours or intermediate electric utility hours.

12. The electric power supply system according to claim 11, wherein the intermediate electric utility hours are hours between the daytime and nighttime.

13. The electric power supply system according to claim 8, wherein the control apparatus controls the supply of electric power such that the electric power required for running the vehicle is also supplied when there is a power outage in the building.

14. The electric power supply system according to claim 13, wherein when the electric power required for running the vehicle has been consumed, the control apparatus starts an engine of the vehicle to generate electric power, and controls the supply of electric power such that the generated electric power is supplied.

5. (canceled)

7. (canceled)

15. An electric power supply method of an electric power supply system provided with a connecting device that connects a secondary battery provided in a vehicle to a building, comprising:

identifying the type of the vehicle that is connected to the connecting device, the type of the secondary battery, or the type of electric power that is distinguishable by the charging source of the electric power stored in the secondary battery;

determining a preset electric power supply method based on the identification results; and

controlling a supply of electric power from the secondary battery to the building based on the determined electric power supply method;

identifying the type of the secondary battery or the type of the electric power stored in the secondary battery by obtaining information indicative of the type of the secondary battery or the type of electric power stored in the secondary battery from the vehicle connected to the connecting device; and

determining the order of priority in which i) electric power charged from a household power supply of the building, of the charging electric power in the secondary battery, and ii) electric power charged from regenerated electric power that is regenerated while the vehicle is running, are to be supplied to the building, and controls the supply of electric power according to that determined order of priority.