Electric-Power Supply System, And Vehicle

• US 20080077286A1
• Filed: 11/29/2005
• Published: 03/27/2008
• Est. Priority Date: 11/30/2004
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Sato, Hitoshi, Minezawa, Yukihiro, Oyobe, Hichirosai, Ishikawa, Tetsuhiro
• Application Number:
  US11/664,502
• Publication Number:
  US 20080077286A1
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60L 1/00 Supplying electric power to auxiliary equipment of vehicles circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 50/10 using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 3/08 Synchronising of networks
• 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 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 9/062 for AC powered loads
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y10S 903/903 having energy storing means, e.g. battery, capacitor

Abstract

A first hybrid vehicle (10A) is connected to a house-side connector (40). A second hybrid vehicle (10B) is connected to the first hybrid vehicle (10A), and they are connected in parallel within the first hybrid vehicle (10A) with respect to a house load (20). When a commercial system power source (50) is interrupted, an automatic switching circuit (30) is activated, and the house load (20) receives electric power from the first and second hybrid vehicles (10A, 10B). The first hybrid vehicle (10A) determines allocations of the amounts of electric power supply from the first and second hybrid vehicles (10A, 10B) based on the amount of the house load (20) and on the residual amounts of fuel in the first and second hybrid vehicles (10A, 10B).

Claims

1. An electric-power supply system, comprising:

a plurality of vehicles electrically connected in parallel with respect to an electric load and supplying electric power to said electric load; and

a system controller determining allocation of amounts of electric power supply from said plurality of vehicles based on an amount of load on said electric load and an amount of electric power capable of being supplied from each of said plurality of vehicles,

each of said plurality of vehicles including an internal combustion engine, and an electric-power generation device generating electric power to be supplied to said electric load using output of said internal combustion engine,

said system controller calculating the amount of electric power capable of being supplied from each of said plurality of vehicles based on a residual amount of fuel in each of said plurality of vehicles, and

each of said plurality of vehicles supplying electric power to said electric load based on said allocation.

2. The electric-power supply system according to claim 1, wherein said system controller is mounted in one of said plurality of vehicles.

3. The electric-power supply system according to claim 1, wherein

said system controller further generates a synchronization signal for synchronizing AC electric power to be output from each of said plurality of vehicles with each other, and

each of said plurality of vehicles outputs the AC electric power in synchronization with said synchronization signal.

4. The electric-power supply system according to claim 1, wherein said electric-power generation device includes:

a generator coupled to said internal combustion engine and including a first three-phase coil in Y connection as a stator coil;

an electric motor including a second three-phase coil in Y connection as a stator coil;

first and second inverters connected to said generator and said electric motor, respectively, to drive said generator and said electric motor, respectively, using electric power generated using output of said internal combustion engine; and

a controller controlling operation of said first and second inverters, and

said controller controls said first and second inverters to generate AC electric power to be supplied to said electric load across a neutral point of said first three-phase coil and a neutral point of said second three-phase coil, using said electric power generated using the output of said internal combustion engine.

5. (canceled)

6. A vehicle capable of supplying electric power to an electric load external to the vehicle, comprising:

an internal combustion engine;

an electric-power generation device generating electric power to be supplied to said electric load using output of said internal combustion engine;

a first connection terminal for connecting the vehicle with said electric load;

a second connection terminal for connecting another vehicle to the vehicle to electrically connect said other vehicle with the vehicle in parallel with respect to said electric load; and

a system controller determining allocation of amounts of electric power supply from the vehicle and said other vehicle connected to said second connection terminal based on an amount of load on said electric load and an amount of electric power capable of being supplied from each of the vehicle and said other vehicle, operating said electric-power generation device based on said allocation, and outputting an electric power command in accordance with said allocation to said other vehicle, and

said system controller calculating the amount of electric power capable of being supplied from each of the vehicle and said other vehicle connected to said second connection terminal based on a residual amount of fuel in each of the vehicle and said other vehicle.

7. The vehicle according to claim 6, wherein said system controller further outputs a synchronization signal for synchronizing second AC electric power to be output from said other vehicle connected to said second connection terminal to first AC electric power to be generated by said electric-power generation device, to said other vehicle.

8. The vehicle according to claim 6, wherein said electric-power generation device includes:

a generator coupled to said internal combustion engine and including a first three-phase coil in Y connection as a stator coil;

an electric motor including a second three-phase coil in Y connection as a stator coil;

first and second inverters connected to said generator and said electric motor, respectively, to drive said generator and said electric motor, respectively, using electric power generated using output of said internal combustion engine; and

a controller controlling operation of said first and second inverters, and

said controller controls said first and second inverters to generate AC electric power to be supplied to said electric load across a neutral point of said first three-phase coil and a neutral point of said second three-phase coil, using said electric power generated using the output of said internal combustion engine.

9. (canceled)

10. (canceled)

11. (canceled)

12. A vehicle capable of supplying electric power to an electric load external to the vehicle, comprising:

an electric-power generation device generating said electric power;

a first connection terminal for electrically connecting the vehicle to another first vehicle to output the electric power generated by said electric-power generation device via said other first vehicle to said electric load;

a second connection terminal for connecting another second vehicle to the vehicle to electrically connect said other second vehicle with the vehicle in parallel with respect to said electric load; and

a system controller operating said electric-power generation device based on an electric power command received from said other first vehicle.

13. The vehicle according to claim 12, wherein said system controller receives a synchronization signal for synchronizing first AC electric power to be generated by said electric-power generation device to second AC electric power to be output from said other first vehicle connected to said first connection terminal, from said other first vehicle, and controls said electric-power generation device to generate said first AC electric power in synchronization with the received synchronization signal.

14. The vehicle according to claim 12, further comprising an internal combustion engine,

wherein said electric-power generation device includes:

a generator coupled to said internal combustion engine and including a first three-phase coil in Y connection as a stator coil;

an electric motor including a second three-phase coil in Y connection as a stator coil;

first and second inverters connected to said generator and said electric motor, respectively, to drive said generator and said electric motor, respectively, using electric power generated using output of said internal combustion engine; and

a controller controlling operation of said first and second inverters, and

said controller controls said first and second inverters to generate AC electric power to be supplied to said electric load across a neutral point of said first three-phase coil and a neutral point of said second three-phase coil, using said electric power generated using the output of said internal combustion engine.

17. The vehicle according to claim 13, further comprising an internal combustion engine,

wherein said electric-power generation device includes:

a generator coupled to said internal combustion engine and including a first three-phase coil in Y connection as a stator coil;

an electric motor including a second three-phase coil in Y connection as a stator coil;

first and second inverters connected to said generator and said electric motor, respectively, to drive said generator and said electric motor, respectively, using electric power generated using output of said internal combustion engine; and

a controller controlling operation of said first and second inverters, and

said controller controls said first and second inverters to generate AC electric power to be supplied to said electric load across a neutral point of said first three-phase coil and a neutral point of said second three-phase coil, using said electric power generated using the output of said internal combustion engine.

15. An electric-power supply system, comprising a plurality of vehicles electrically connected in parallel with respect to an electric load and supplying electric power to said electric load,

each of said plurality of vehicles including:

an electric-power generation device generating said electric power;

a first connection terminal for electrically connecting the vehicle to said electric load or to another first vehicle, to output electric power generated by said electric-power generation device to said electric load when the vehicle is connected to said electric load, and to output electric power generated by said electric-power generation device via said other first vehicle to said electric load when the vehicle is connected to said other first vehicle;

a second connection terminal for connecting another second vehicle to the vehicle to electrically connect said other second vehicle with the vehicle in parallel with respect to said electric load or said other first vehicle connected by said first connection terminal; and

a system controller determining allocation of amounts of electric power supply from said plurality of vehicles based on an amount of load on said electric load and an amount of electric power capable of being supplied from each of said plurality of vehicles when said first connection terminal is connected to said electric load, and operating said electric-power generation device based on an electric power command received from said other first vehicle when said first connection terminal is connected to said other first vehicle, and

each of said plurality of vehicles supplying electric power to said electric load based on said allocation determined by the system controller of a vehicle connected to said electric load by said first connection terminal.

16. The vehicle according to claim 15, wherein

each of said plurality of vehicles further includes an internal combustion engine,

said electric-power generation device generates electric power to be supplied to said electric load using output of said internal combustion engine, and

the system controller of the vehicle connected to said electric load by said first connection terminal calculates the amount of electric power capable of being supplied from each of said plurality of vehicles based on a residual amount of fuel in each of said plurality of vehicles.