ELECTRIC POWER SUPPLYING APPARATUS, ELECTRIC POWER SUPPLYING METHOD, INVERTER, AND ELECTRIC VEHICLE

• US 20130264865A1
• Filed: 03/28/2013
• Published: 10/10/2013
• Est. Priority Date: 04/06/2012
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sugeno, Naoyuki, Imamura, Noritoshi, Kumagai, Eiji, Umetsu, Koji, Minami, Atsushi, Yasuda, Masayuki
• Granted Patent: US 9,608,451 B2
• Time in Patent Office: Days
• US Class Current: 307/9.1
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• 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 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2300/28 The renewable source being wind energy
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 2310/58 The condition being electrical
• CPC Class Codes: H02J 2310/60 Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• 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 3/381 Dispersed generators
• CPC Class Codes: H02J 3/46 Controlling of the sharing of output between the generators, converters, or transformers
• CPC Class Codes: H02J 7/00712 the cycle being controlled or terminated in response to electric parameters
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• CPC Class Codes: Y02E 60/00 : Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02E 70/30 : Systems combining energy storage with energy generation of non-fossil origin
• 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 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 20/222 : Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/242 : Home appliances
• CPC Class Codes: Y04S 30/12 : Remote or cooperative charging

Abstract

The present disclosure provides an electric power supplying apparatus including: an electric storage device; and a control portion configured to control processing for mixing an output from the electric storage device, and an electric power of an external electric power system with each other in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of the electric storage device, wherein an alternating current electric power is formed in the mixing processing. When the electric power supplying apparatus further includes an electric power generating apparatus, processing for mixing an output from the electric power generating apparatus, an output from the electric storage device, and an electric power of the external electric power system with one another, is controlled.

Claims

1. An electric power supplying apparatus comprising:

an electric storage device; and

a control portion configured to control processing for mixing an output from said electric storage device, and an electric power of an external electric power system with each other in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of said electric storage device,

wherein an alternating current electric power is formed in the mixing processing.

2. The electric power supplying apparatus according to claim 1, wherein a first threshold value is set for the remaining capacity of said electric storage device, and when the remaining capacity is smaller than the first threshold value, the alternating current electric power is formed by said external electric power system and said electric storage device is charged by said external electric power system.

3. The electric power supplying apparatus according to claim 1, wherein a second threshold value is set for the remaining capacity of said electric storage device, and when the remaining capacity is larger than the second threshold value, the alternating current electric power is formed by a mixture output of the electric power of said external electric power system, and the output electric power from said electric storage device.

4. The electric power supplying apparatus according to claim 1, wherein a threshold value is set for a load electric power, and when the load electric power is smaller than the threshold value, the alternating current electric power is formed by said external electric power system and said electric storage device is charged by said external electric power system, while when the load electric power is larger than the threshold value, the alternating current electric power is formed by a mixture output of the electric power of said external electric power system, and the output electric power from said electric storage device.

5. The electric power supplying apparatus according to claim 4, wherein the threshold value for the load electric power is set in accordance with a contracted electric power.

6. The electric power supplying apparatus according to claim 1,

wherein a processing portion executing the mixture processing includes a converter converting the electric power of said external electric power system into a direct current electric power and an inverter converting a direct current electric power into an alternating current electric power, said inverter being connected in series with said converter;

said electric storage device is connected between said converter and said inverter; and

an output from said converter, and the output from said electric storage device are mixed based on a direct current electric power.

7. The electric power supplying apparatus according to claim 6, wherein said electric storage device is connected between said converter and said inverter through a charging circuit and a boosting circuit connected in parallel with each other.

8. The electric power supplying apparatus according to claim 1, further comprising

an inverter configured to convert the output from said electric storage device into an alternating current electric power,

wherein an alternating current electric power is formed by said inverter so as to agree in frequency and phase with the electric power of said external electric power system, and is mixed with the electric power of said external electric power system to be outputted.

9. An electric power supplying method comprising:

executing processing for mixing an output from an electric storage device, and an electric power of an external electric power system with each other, thereby outputting an alternating current electric power; and

controlling a mixture ratio in the mixing processing in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of said electric storage device.

10. The electric power supplying method according to claim 9, wherein the mixture ratio is controlled in accordance with the peak shift command.

11. An inverter, wherein a direct current electric power formed from an electric power of an external electric power system, and a direct current electric power from an electric storage device are mixed with each other, and a resulting electric power is supplied to said inverter, thereby forming an alternating current electric power.

12. An electric vehicle comprising:

a converter configured to receive an electric power from an electric storage device, and convert the electric power into a driving force for said electric vehicle; and

a controller configured to execute information processing about vehicle control based on information on said electric storage device,

wherein said electric vehicle executes mixing processing for mixing an output from said electric storage device, and an electric power of an external electric power system with each other, thereby outputting an alternating current electric power, and controls a mixture ratio in the mixing processing in accordance with a load electric power, and a remaining capacity of said electric storage device.

13. An electric power supplying apparatus comprising:

a connecting portion configured to connect an external electric power system and an electric power generating apparatus to each other;

an electric storage device; and

a control portion configured to control processing for mixing an output from said electric power generating apparatus, an output from said electric storage device, and an electric power of said external electric power system with one another in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of said electric storage device,

wherein an alternating current electric power is formed in the mixing processing.

14. The electric power supplying apparatus according to claim 13,

wherein a processing portion configured to execute the mixture processing includes a converter converting the electric power of said external electric power system into a direct current electric power, and an inverter configured to convert a direct current electric power into an alternating current electric power, said inverter being connected in series with said converter;

said electric power generating apparatus and said electric storage device are connected in parallel with each other between said converter and said inverter; and

an output from said converter, an output from said electric power generating apparatus, and the output from said electric storage device are mixed with one another based on a direct current electric power.

15. The electric power supplying apparatus according to claim 13,

wherein said electric storage device is charged by an electric power of said electric power generating apparatus;

and

when the electric power of said electric power generating apparatus is larger than a maximum charging electric power of said electric storage device, a surplus electric power is subjected to reverse electric power flow.

16. The electric power supplying apparatus according to claim 13, further comprising

a charging portion configured to charge said electric storage device by an electric power of said electric power generating apparatus,

wherein the control is carried out in such a way that when an electric power on a load side is equal to or larger than a predetermined value, the electric power used to charge said electric storage device is reduced.

17. The electric power supplying apparatus according to claim 13, further comprising

a charging portion configured to charge said electric storage device by an electric power of said electric power generating apparatus,

wherein almost all the electric power of said electric power generating apparatus is subjected to reverse electric power flow to said external electric power system by said charging portion.

18. The electric power supplying apparatus according to claim 13, wherein a threshold value is set for a load electric power, and when the load electric power is smaller than the threshold value, the alternating current electric power is formed by the electric power of said external electric power system and the electric power of said electric power generating apparatus, and said electric storage device is charged by the electric power of said external electric power system and the electric power of said electric power generating apparatus, while when the load electric power is larger than the threshold value, the alternating current electric power is formed by a mixture output of the electric power of said external electric power system, and the output electric power from said electric storage device.

19. The electric power supplying apparatus according to claim 13, wherein when said external electric power system is absent, a total electric power of the electric power of said electric power generating apparatus, and the electric power of said electric storage device is set as the alternating current electric power.

20. An electric vehicle comprising:

a converter configured to receive an electric power from an electric storage device, and convert the electric power into a driving force for said electric vehicle; and

a controller configured to execute information processing about vehicle control based on information on said electric storage device,

wherein said electric vehicle executes processing for mixing an output from an electric power generating apparatus, an output from said electric storage device, and an electric power of an external electric power system with one another, thereby outputting an alternating current electric power, and controls a mixture ratio in the mixing processing in accordance with a load electric power, and a remaining capacity of said electric storage device.