JP2007330083A - Electric power supply system - Google Patents

Electric power supply system Download PDF

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Publication number
JP2007330083A
JP2007330083A JP2006161414A JP2006161414A JP2007330083A JP 2007330083 A JP2007330083 A JP 2007330083A JP 2006161414 A JP2006161414 A JP 2006161414A JP 2006161414 A JP2006161414 A JP 2006161414A JP 2007330083 A JP2007330083 A JP 2007330083A
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Prior art keywords
amount
power
unit
discharge
charger
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JP2006161414A
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JP5063036B2 (en
Inventor
Toshio Inoue
利男 井上
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Chugoku Electric Power Co Inc:The
中国電力株式会社
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12Recording operating variables ; Monitoring of operating variables
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14Conductive energy transfer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L55/00Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/54Drive Train control parameters related to batteries
    • B60L2240/547Voltage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/54Drive Train control parameters related to batteries
    • B60L2240/549Current
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/80Time limits
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/70Systems integrating technologies related to power network operation and communication or information technologies mediating in the improvement of the carbon footprint of electrical power generation, transmission or distribution, i.e. smart grids as enabling technology in the energy generation sector
    • Y02E60/72Systems characterised by the monitored, controlled or operated power network elements or equipments
    • Y02E60/721Systems characterised by the monitored, controlled or operated power network elements or equipments the elements or equipments being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7005Batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/12Electric charging stations
    • Y02T90/121Electric charging stations by conductive energy transmission
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/12Electric charging stations
    • Y02T90/128Energy exchange control or determination
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/14Plug-in electric vehicles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles
    • Y02T90/163Information or communication technologies related to charging of electric vehicle
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/10Systems characterised by the monitored, controlled or operated power network elements or equipment
    • Y04S10/12Systems characterised by the monitored, controlled or operated power network elements or equipment the elements or equipment being or involving energy generation units, including distributed generation [DER] or load-side generation
    • Y04S10/126Systems characterised by the monitored, controlled or operated power network elements or equipment the elements or equipment being or involving energy generation units, including distributed generation [DER] or load-side generation 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]

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric power supply system that manages suitability for accumulation of electricity of battery of electric vehicle, as well as enables electric power supply from the battery to a distribution line of commercial electric power system. <P>SOLUTION: A charger and discharger 30 obtains residual accumulation of electricity of a battery 21, and transmits it to a charger and discharger control device 40. The charger and discharger control device 40 includes a pattern storage 454 for storing target accumulation of electricity in connection with time. The charger and discharger control device 40 receives residual accumulation of electricity A from the charger and discharger 30, and obtains a target accumulation of electricity B corresponding to a time after elapse of a predetermined time (t) since the current time from the pattern storage 454. In the case where the obtained target accumulation of electricity B is less than the residual accumulation of electricity A, the charger and discharger control device 40 transmits a discharge command signal allowed to bear a maximum charge and discharge amount C calculated based on the target accumulation of electricity B and the residual accumulation of electricity A to the charger and discharger 30. The charger and discharger 30 receives a discharge command signal, and controls so that the amount of discharge per unit time from the battery 21 to be not greater than a maximum charge and discharge amount C at the predetermined time (t). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power supply system that supplies power from a storage battery of an electric vehicle to a distribution line of a commercial power system.

Conventionally, it has been proposed to supply power from a storage battery mounted on an electric vehicle to a commercial power system such as a house. For example, in the system described in Patent Document 1, a mechanism for supplying electric power to a house from a vehicle storage battery provided in an electric vehicle is disclosed.
JP-A-11-178234

  However, the system described in Patent Document 1 does not describe anything about controlling the amount of discharge when power is supplied from a storage battery to a house. For this reason, when it is desired to use an electric vehicle, it may happen that the amount of stored electricity necessary for the operation of the electric vehicle does not remain.

  The present invention has been made in view of such a background, and appropriately manages the amount of electricity stored in a storage battery of an electric vehicle and can supply power from the storage battery to a distribution line of a commercial power system. The purpose is to provide.

The invention described in claim 1 of the present invention for solving the above problems is a power supply system that supplies power to a distribution line of a commercial power system from a storage battery provided in an electric vehicle, and has a communication function. A charger / discharger that controls the amount of power supplied from the storage battery to the distribution line, and an information processing device that is communicably connected to the charger / discharger, wherein the charger / discharger has a time t1 when the storage battery is present. A remaining storage amount acquisition unit that acquires a remaining storage amount that is a stored amount of power, and a remaining storage amount transmission unit that transmits the remaining storage amount to the information processing device, wherein the information processing device includes the charger / discharger A remaining storage amount receiving unit that receives the remaining storage amount from a target storage amount storage unit that stores a target storage amount that is a storage amount that the storage battery should have at the time in association with information indicating time; From time t1 A target power storage amount acquisition unit that acquires the target power storage amount corresponding to time t2 after a fixed time from the target power storage amount storage unit, and the target power storage when the remaining power storage amount is greater than the acquired target power storage amount A maximum dischargeable power amount determining unit that determines a maximum dischargeable power amount per unit time that can be discharged from the storage battery based on the amount and the remaining power storage amount, and transmits the maximum dischargeable power amount to the charger / discharger A maximum dischargeable power amount transmitting unit, and the charger / discharger receives the maximum dischargeable power amount from the information processing device, and a unit for receiving a maximum dischargeable power amount from the storage battery per unit time. A discharge amount control unit that controls the discharge amount to be equal to or less than the maximum dischargeable power amount.
Note that the above distribution lines include indoor wiring.

  According to the power supply system of the present invention, power can be supplied from the storage battery to the distribution line when the storage battery stores power exceeding the target power storage amount. Therefore, the storage battery can be used effectively.

  The invention according to claim 2 of the present invention is the power supply system according to claim 1, wherein the maximum dischargeable power amount determination unit calculates the maximum dischargeable power amount per unit time. It is calculated by the formula (the remaining power storage amount−the target power storage amount) / (the time t2−the time t1).

  Moreover, invention of Claim 3 among this invention is the electric power supply system of Claim 1, Comprising: The said information processing apparatus is the discharge electric energy restriction | limiting which memorize | stores the discharge electric energy restriction | limiting value from the said storage battery. A value storage unit, and when the determined maximum dischargeable power amount per unit time is larger than the discharge power amount limit value, the maximum dischargeable power amount determination unit sets the discharge power amount limit value to the maximum value. The amount of power that can be discharged is assumed. In this case, the storage battery can be used efficiently and deterioration of the storage battery characteristics can be prevented.

  Moreover, invention of Claim 4 is an electric power supply system of Claim 1, Comprising: The said information processing apparatus is information which shows the time slot | zone which supplies electric power from the said storage battery to the said distribution line. When the time t1 is not included in the time zone, the charging time signal that instructs the storage battery to supply power from the distribution line is transmitted to the charger / discharger. An instruction transmission unit, and the charger / discharger receives the charge instruction signal from the information processing device, and the storage battery transfers the distribution line in response to the reception of the charge instruction signal. And a switch for switching power supply from the distribution line to the storage battery.

  In this case, power is supplied from the storage battery to the distribution line so that the remaining storage amount of the storage battery does not fall below the target storage amount during the discharging time zone, and the storage battery is charged during other time zones. Therefore, by setting a discharge time zone in a time zone where the power consumption of the distribution line is high, power is supplied from a storage battery charged in a time zone where the power consumption is low in a time zone where the power consumption is high By doing so, the received power can be leveled.

  Further, the invention according to claim 5 of the present invention is the power supply system according to claim 1, wherein the information processing apparatus is configured to distribute the distribution when the remaining charged amount is smaller than the target charged amount. A charge instruction transmitting unit that transmits to the charger / discharger a charge instruction signal instructing to supply power to the storage battery from an electric wire, wherein the charger / discharger receives the charge instruction signal from the information processing apparatus; A signal receiving unit, and a switch that cuts off power supply from the storage battery to the distribution line and switches power supply from the distribution line to the storage battery in response to reception of the charging instruction signal. And

  Moreover, invention of Claim 6 among this invention is the electric power supply system of Claim 1, Comprising: The said maximum dischargeable electric energy determination part subtracted the said target electrical storage amount from the said residual electrical storage amount. When the value is equal to or greater than a predetermined value, the maximum dischargeable electric energy per unit time is calculated by the following equation: (the remaining power storage amount−the target power storage amount) / (the time t2−the time t1), and the remaining power When the value obtained by subtracting the target power storage amount from the power storage amount is less than the predetermined value, the unit is represented by the following equation: (the remaining power storage amount−the target power storage amount−the predetermined value) / (the time t2−the time t1). The maximum dischargeable electric energy per hour is calculated. As a result, when the remaining power storage amount approaches the target power storage amount, the dischargeable amount per unit time is reduced, so that the discharge from the storage battery can be performed for a longer time. Therefore, it is possible to avoid a situation in which the power supply from the storage battery is stopped when the remaining storage amount of the storage battery is equal to or less than the target storage amount. For example, it is possible to avoid the chattering of the discharge of the storage battery due to the measurement error of the remaining storage amount of the storage battery causing the remaining storage amount to be greater than or less than the target storage amount.

  Moreover, invention of Claim 7 among this invention is an electric power supply system of Claim 1, Comprising: The said target electrical storage amount memory | storage part respond | corresponds to the information which shows the day of the week, and the information which shows the said time In addition, the target power storage amount is stored, and the maximum dischargeable power amount determination unit acquires the target power storage amount corresponding to the time t2 and the current day of the week. In this case, setting the target power storage amount according to the frequency of use of the electric vehicle depending on the day of the week makes it easier to set the target power storage amount for more efficiently using the storage battery.

  Moreover, invention of Claim 8 is an electric power supply system of Claim 1 among this invention, Comprising: The said charger / discharger acquires the discharge characteristic of the said storage battery, The discharge characteristic acquisition part, The said discharge A discharge characteristic transmitting unit that transmits information indicating characteristics to the information processing device, wherein the information processing device receives information indicating the discharge characteristics from the charger / discharger; and A reference characteristic information storage unit that stores reference characteristic information indicating a discharge characteristic serving as a reference; a characteristic change detection unit that detects information indicating the discharge characteristic and the reference characteristic information to detect a characteristic change of the storage battery; And a characteristic change notification unit that outputs a signal indicating that the storage battery has changed characteristics when the characteristic change is detected.

  Further, the invention according to claim 9 of the present invention is the power supply system according to claim 1, wherein the electric vehicle is estimated to be able to run based on a discharge characteristic of the storage battery. A travelable distance calculating device that calculates and displays a travelable distance, wherein the information processing device is communicably connected to the travelable distance calculating device, and the charger / discharger is a discharge characteristic of the storage battery. A discharge characteristic acquisition unit that acquires the discharge characteristic, and a discharge characteristic transmission unit that transmits information indicating the discharge characteristic to the information processing device, wherein the information processing device transmits the discharge characteristic transmitted from the charger / discharger. A discharge characteristic receiving unit that receives information indicating the discharge characteristic, and a discharge characteristic transmission unit that transmits information indicating the discharge characteristic to the travelable distance calculating device. In this case, it is possible to calculate the travelable distance more accurately in the electric vehicle. In the present embodiment, the travelable distance is not a distance that can actually travel, but a calculated value that is estimated to be travelable.

  Other problems and solutions to be disclosed by the present application will be made clear by the embodiments of the invention and the drawings.

  ADVANTAGE OF THE INVENTION According to this invention, while managing the electrical storage amount of the storage battery of an electric vehicle appropriately, electric power can be supplied to the distribution line of a commercial power system from a storage battery.

== System configuration ==
FIG. 1 is a diagram illustrating an overall configuration of a power supply system according to the present embodiment.
Commercial power is supplied to the distribution line 11 of the house 10 through the lead-in wire 5. The commercial power is supplied to various home appliances 14 in the house 10 through the switch 12 and the distribution board 13.

  A charger / discharger 30 is connected to the distribution line 11. The charger / discharger 30 is connected to a storage battery 21 mounted on the electric vehicle 20 via a connector 31. A charger / discharger controller 40 is connected to the charger / discharger 30. The charger / discharger 30 controls charging / discharging of the storage battery 21 according to a signal received from the charger / discharger control device 40.

  The charger / discharger control device 40 is a computer (information processing device) that controls the charger / discharger 30. As the charger / discharger control device 40, for example, a personal charger / discharger control device or a sequencer can be used. The charger / discharger control device 40 is connected to the switch 12 and opens and closes the switch 12 by transmitting a control signal to the switch 12. Furthermore, the charger / discharger control device 40 has a wireless communication function, and can control home appliances 14 such as lighting, an air conditioner, a refrigerator, and a television via the wireless communication path 15.

== Charge / Discharger 30 ==
FIG. 2 is a diagram illustrating a hardware configuration of the charger / discharger 30. As shown in the figure, the charger / discharger 30 includes a charge / discharge unit 321, a switch 323, a control unit 326, a memory 327, and an I / O interface 328 in addition to a connector 31 connected to the storage battery 21 of the electric vehicle 20. ing.

The charge / discharge unit 321 converts alternating current into direct current and converts direct current into alternating current.
The memory 327 is a flash memory, an EEPROM, a DRAM, or the like that stores programs and data. The control unit 326 controls the entire charger / discharger 30. The control unit 326 provides various functions by executing a program stored in the memory 327.
The control unit and each device are connected by an I / O interface 328 and exchange signals. For the exchange of signals between the I / O interface 328 and each device, communication means using various communication protocols can be used in addition to contact signals using no voltage or an open collector.

  FIG. 3 is a functional block diagram of the charger / discharger 30. As shown in the figure, the charger / discharger 30 includes a discharge characteristic acquisition unit 331, a discharge characteristic transmission unit 332, a remaining storage amount acquisition unit 333, a remaining storage amount transmission unit 334, a charge / discharge instruction signal reception unit 335, and a charge / discharge switching. A unit 336, a charge / discharge control unit 337, and a maximum charge / discharge amount storage unit 351. In addition, each said function part 331-337 is implement | achieved when the control part 326 with which the charger / discharger 30 is provided executes the program memorize | stored in the memory 327. FIG. The maximum charge / discharge amount storage unit 351 is realized as a storage area provided by the memory 327, for example.

  The discharge characteristic acquisition unit 331 acquires information indicating the discharge characteristics of the storage battery 21 (hereinafter referred to as discharge characteristic information). In the present embodiment, the discharge characteristic information is the voltage of the storage battery 21 for each elapsed time from the start of discharge. For example, after the discharge from the storage battery 21 is started, the discharge characteristic acquisition unit 331 stores the measured voltage and the elapsed time in the memory 327 so that the voltage of the storage battery 21 is measured every predetermined time. Thus, discharge characteristic information can be created. The storage battery 21 may create the discharge characteristic information, and the discharge characteristic acquisition unit 331 may acquire the discharge characteristic information from the storage battery 21. The discharge characteristic transmission unit 332 transmits the discharge characteristic information acquired by the discharge characteristic acquisition unit 331 to the charger / discharger controller 40. Note that a change in the amount of current may be adopted as the discharge characteristics.

  The remaining power storage amount acquisition unit 333 acquires the current power storage amount of the storage battery 21 (hereinafter referred to as the remaining power storage amount). For example, the remaining power storage amount acquisition unit 333 may estimate the remaining power storage amount by measuring the voltage of the storage battery 21 or may inquire the storage battery 21 about the remaining power storage amount. The remaining power storage amount transmission unit 334 transmits the remaining power storage amount acquired by the remaining power storage amount acquisition unit 333 to the charger / discharger controller 40.

  The charge / discharge instruction signal receiving unit 335 (corresponding to the maximum dischargeable electric energy receiving unit of the present invention) is a signal (hereinafter referred to as charge / discharge) instructing charge / discharge of the storage battery 21 transmitted from the charger / discharger controller 40. In addition, a charge / discharge instruction signal for instructing discharge is called a discharge instruction signal, a charge / discharge instruction signal for instructing charging is called a charge instruction signal, and a charge / discharge instruction signal for instructing neither discharging nor charging to be performed. A discharge stop signal) is received from the charger / discharger controller 40. The charge / discharge instruction signal transmitted from the charger / discharger control device 40 is accompanied by the maximum power amount per unit time when charging / discharging the storage battery 21 (hereinafter referred to as the maximum charge / discharge amount). The discharge instruction signal receiving unit 335 stores the maximum charge / discharge amount attached to the received charge / discharge instruction signal in the maximum charge / discharge amount storage unit 351.

  The charge / discharge switching unit 336 controls charge / discharge of the storage battery 21 according to the charge / discharge instruction signal. Control of charging the storage battery 21 is performed by turning on the switch 323 and switching the charge / discharge unit 321 to charge control so as to charge the storage battery via the connector 31. Control of discharge from the storage battery 21 is performed by turning on the switch 323 and switching the charge / discharge unit 321 to discharge control so as to discharge from the storage battery via the connector 31. The charge / discharge stop control for the storage battery 21 is performed by turning off the switch 323 and stopping the charge / discharge unit 321.

  The charge / discharge control unit 337 is a charge / discharge unit so that the amount of power per unit time flowing between the storage battery 21 and the distribution line 11 does not exceed the maximum charge / discharge amount stored in the maximum charge / discharge amount storage unit 351. The charging / discharging control of 321 is performed.

== Charge / discharger control device 40 ==
FIG. 4 is a diagram illustrating a hardware configuration of the charger / discharger controller 40. As shown in the figure, the charger / discharger control device 40 includes a CPU 41, a memory 42, a storage device 43, a wireless communication interface 44, an I / O interface A (45), an I / O interface B (46), and a display interface 47. The touch panel display 48 is provided.

The storage device 43 is, for example, a hard disk drive, flash memory, CD-ROM drive, or the like that stores programs and data. The CPU 41 implements various functions by reading the program stored in the storage device 43 into the memory 42 and executing it.
The wireless communication interface 44 is an interface for performing wireless communication with the home electric appliance 14 by infrared rays or radio waves via the wireless communication path 15.

  The I / O interface A (45) and the I / O interface B (46) are interfaces for connecting to external devices. As the I / O interface A (45) and the I / O interface B (46), for example, a communication interface complying with a protocol such as RS232C, USB, IEEE1394, or the like can be used. The charger / discharger control device 40 is connected to the switch 12 via the I / O interface A (45), and is connected to the charger / discharger 30 via the I / O interface B (46).

  The display interface 47 is an interface for connecting to the touch panel display 48. The charger / discharger control device 40 outputs information to the touch panel display 48 or receives information input from the touch panel display 48 via the display interface 47.

  FIG. 5 is a functional block diagram of the charger / discharger controller 40. As shown in the figure, the charger / discharger control device 40 includes a discharge characteristic reception unit 411, a discharge characteristic transmission unit 412, a remaining storage amount reception unit 413, an operation status display unit 414, a setting registration unit 415, and a maximum discharge amount determination unit. 416, functional units of charge / discharge instruction signal transmission unit 417, power failure detection unit 418, home appliance control unit 419, absence detection unit 420, switch control unit 421, discharge characteristic storage unit 451, storage amount history storage unit 452, setting And an information storage unit 453, a pattern storage unit 454, and an application information storage unit 455. In addition, said each function part 411-421 is implement | achieved when CPU41 with which the charger / discharger control apparatus 40 is provided reads the program memorize | stored in the memory | storage device 43 to the memory 42, and runs it. Each of the storage units 451 to 455 is realized as a storage area on a storage resource provided by the memory 42 or the storage device 43.

  The discharge characteristic storage unit 451 stores discharge characteristic information. FIG. 6 shows a configuration example of the discharge characteristic storage unit 451. As shown in the figure, the discharge characteristic storage unit 451 stores the elapsed time from the discharge start time and the voltage of the storage battery 21 in association with the date and time when the discharge characteristic information is acquired.

  The discharge characteristic receiving unit 411 receives the discharge characteristic information transmitted from the charger / discharger 30, and registers the received discharge characteristic information in the discharge characteristic storage unit 451 in association with the current date.

  The discharge characteristic transmission unit 412 reads the discharge characteristic information corresponding to the latest date from the discharge characteristic storage unit 451 and transmits the read discharge characteristic information to the electric vehicle 20. Thereby, in the electric vehicle 20, the travelable distance can be accurately calculated according to the discharge characteristics of the storage battery 21. The discharge characteristic transmission unit 412 reads out a predetermined number of discharge characteristic information from the discharge characteristic storage unit 451, and performs a statistical process on the voltage included in the read discharge characteristic information (for example, an average value, a median value, etc. ) May be transmitted to the electric vehicle 20. In this case, it is possible to provide the electric vehicle 20 with the discharge characteristics of the storage battery 21 that absorbs the measurement error and the influence of parameters not taken into account during the measurement.

The storage amount history storage unit 452 stores a history of the remaining storage amount. FIG. 7 shows a configuration example of the power storage amount history storage unit 452. As shown in the figure, the storage amount history storage unit 452 stores the remaining storage amount in association with the date and time.
The remaining power storage amount receiving unit 413 receives the remaining power storage amount transmitted from the charger / discharger 30, and registers the received remaining power storage amount in the power storage amount history storage unit 452 in association with the current date and time.

  The setting information storage unit 453 stores setting information necessary for processing of the charger / discharger controller 40. FIG. 8 shows a configuration example of setting information stored in the setting information storage unit 453. As shown in the figure, the setting information stored in the setting information storage unit 453 includes a discharge time zone, a charge time zone, a maximum charge output, a maximum discharge output, a travelable distance, and an operation mode.

  The discharge time zone is a time zone for discharging from the storage battery 21 of the electric vehicle 20. The details of the process relating to the discharge from the storage battery 21 will be described later. The charging time zone is a time zone in which the storage battery 21 is charged. In the present embodiment, the charging time zone indicates a time zone other than the discharging time zone.

  The maximum charging output is the rated power amount for charging, and the maximum discharging power is the rated power amount for discharging. As will be described later, the amount of power per unit time supplied from the distribution line 11 to the storage battery 21 when charging the storage battery 21 is controlled to be equal to or less than the amount of power set to the maximum charge output, and the storage battery 21 is discharged when discharged from the storage battery 21. The amount of power per unit time supplied from 21 to the distribution line 11 is controlled to be equal to or less than the amount of power set to the maximum discharge output.

The travelable distance is a distance that the electric vehicle 20 can travel at 1 kW.
In the operation mode, one of “normal”, “function priority”, “lock”, and “manual” is set. The charger / discharger control device 40 controls the charger / discharger 30 according to the operation mode, as will be described later.

  The pattern storage unit 454 (corresponding to the target storage amount storage unit of the present invention) stores a pattern of a storage amount (hereinafter referred to as a target storage amount) that is desired to remain in the storage battery 21 in one day. As will be described later, the storage battery 21 is discharged so that the remaining power storage amount does not fall below the target power storage amount in the discharge time zone of the setting information. FIG. 9 shows a configuration example of the pattern storage unit 454. As shown in the figure, the pattern storage unit 454 stores the time and the target storage amount in association with the pattern name that specifies the pattern of the target storage amount. In the present embodiment, the target power storage amount is stored in association with the time of every hour, but not limited to this, it is associated with a time of 30 minutes, 15 minutes, 1 minute units, or an arbitrary time. The target power storage amount may be stored.

  The application information storage unit 455 manages the date on which the target storage amount pattern is applied. FIG. 10 shows a configuration example of the application information storage unit 455. As shown in the figure, the application information storage unit 455 stores a pattern name in association with information for specifying a setting target date. As shown in FIG. 10, information specifying the date includes, for example, a day of the week such as “weekday”, “Saturday”, “Sunday”, a date such as “2005/12/29”, “2005/12/01 to 2005”. A character string representing a period such as “/ 12/31” is registered.

  The driving status display unit 414 outputs the remaining storage amount history and the target storage amount pattern to the touch panel display 48. An example of the screen 50 displayed by the driving status display unit 414 is shown in FIG. As shown in the figure, the screen 50 includes a graph display field 51, an operation mode setting field 52, and a setting button 53.

  In the graph display column 51, the transition of the remaining power storage amount is displayed in a graph. The driving status display unit 414 acquires the pattern name corresponding to the current date from the application information storage unit 455. At this time, when the current date corresponds to a plurality of pattern names, the driving status display unit 414 obtains a pattern name corresponding to information for specifying a setting target that specifies the date in more detail. To do. For example, in the example shown in FIG. 8, for “December 29, 2005”, “standard (weekday)” corresponding to “weekday” and “standard (holiday)” corresponding to “2005/12/29” Then, “standard (holiday)” corresponding to “2005/12/29” specifying the date in more detail is acquired.

  The driving status display unit 414 reads the target storage amount for each time corresponding to the acquired pattern name from the pattern storage unit 454 and displays the read target storage amount for each time in the graph display column 51. In the example of FIG. 11, the pattern of the target power storage amount is displayed as a graph as a data series of “set target value”. In addition, the operation status display unit 414 reads the remaining storage amount history corresponding to the current date from the storage amount history storage unit 452 in order of time, and displays the read remaining storage amount history in the graph display column 51. In the example of FIG. 11, the history of the remaining power storage amount is displayed as a graph as a data series of “charge / discharge results”.

  When the “normal” button 521, the “function priority” button 522, the “lock” button 523, or the “manual” button 524 in the setting column 52 is pressed, the operation mode of the setting information storage unit 453 is set to “normal”. “Function priority”, “Lock”, and “Manual” are set.

  When the setting button 53 is pressed, setting information registration processing by the setting registration unit 415 is performed. FIG. 12 shows an example of the input screen 60 used for setting information registration processing by the setting registration unit 415. As shown in the figure, the input screen 60 includes a display button 61, a pattern registration button 62, a pattern application button 63, a setting information display field 64, and a setting information input field 65. Here, when the display button 61 is pressed, the above-described operation state display unit 414 displays the screen 50. When the pattern registration button 62 is pressed, the setting registration unit 415 performs a target power storage amount registration process described later. When the pattern application button 63 is pressed, the setting registration unit 415 performs a date registration process for applying a target power storage amount pattern to be described later.

  The setting registration unit 415 reads the setting information from the setting information storage unit 453, displays each item of the read setting information on the display column 64, and sets it as an initial value of each item in the input column 65. When a value is input to any item in the input field 65 and the registration button 651 is pressed, the setting registration unit 415 registers the value input in the input field 65 in the setting information storage unit 453 and displays the value in the display field. 64 items are set.

  FIG. 13 is a diagram illustrating an example of the target power storage amount input screen 70. The input screen 70 includes a display button 71, a pattern application button 72, a pattern name designation field 73, a target power storage amount pattern graph display field 74, and a target power storage amount input field 75. Here, when the display button 71 is pressed, the screen transitions to the screen 50 displayed by the driving status display unit 414. When the pattern application button 72 is pressed, the setting registration unit 415 performs a date registration process for applying a target storage amount pattern to be described later.

  When a pattern name is selected from the designation field 73, the setting registration unit 415 reads the target storage amount for each time corresponding to the selected pattern name from the pattern storage unit 454. The setting registration unit 415 multiplies the target power storage amount by the value set as the travelable distance in the setting information storage unit 453 for each of the read target power storage amounts by time, and the electric vehicle 20 corresponding to the target power storage amount. The travelable distance is calculated, and the calculated travelable distance is displayed in a graph in the graph display column 74.

  The user sets the time in the setting field 751 of the input field 75, and sets the distance in which the electric vehicle 20 should be able to travel at that time in the setting field 752. When the registration button 753 is pressed, the setting registration unit 415 calculates the target storage amount by dividing the distance set in the setting field 752 by the value set for the travelable distance in the setting information storage unit 453. The setting registration unit 415 associates the pattern name specified in the specification column 73 with the time set in the setting column 751 and the calculated target power storage amount, and registers them in the pattern storage unit 454. As described above, the target storage amount for each time is registered in the pattern storage unit 454.

  FIG. 14 is a diagram showing an example of the input screen 80 used for the date registration process to which the target power storage amount pattern is applied. The input screen 80 includes a display button 81, a pattern registration button 82, a date input field 83 for applying a target storage amount pattern, and a graph display field 84 for a target storage amount pattern. Here, when the display button 81 is pressed, the driving status display unit 414 displays the screen 50 described above. When the pattern registration button 82 is pressed, the setting registration unit 415 displays the input screen 70 described above.

  From the list boxes 831 to 833 in the input field 83, a pattern name that specifies a pattern of the target power storage amount to be applied on weekdays (Monday to Friday), Saturday, and Sunday is selected. When a pattern name is selected from the list boxes 831 to 833, the setting registration unit 415 selects the pattern name selected in the list box 831 in association with “weekdays” in the list box 832 in association with “Saturday”. The pattern names selected in the list box 833 are registered in the application information storage unit 455 in association with “Sunday”.

  When a date is designated from the date designation field 834 in the calendar format and a pattern name of a pattern to be applied to the designated date is selected from the list box 835, the setting registration unit 415 displays a character string representing the designated date. The selected pattern name is registered in the application information storage unit 455 in association with.

  As described above, the setting registration unit 415 registers the setting information in the setting information storage unit 453, the target storage amount pattern is registered in the pattern storage unit 454, and the target storage amount pattern is stored in the application information storage unit 455. The date to apply is registered.

  The power failure detection unit 418 detects a power failure of the house 10. The power failure detection unit 418 detects instantaneously when a power failure occurs in the distribution line 11, and switches the charger / discharger 30 to the discharge for performing the independent operation control instantaneously. In the independent operation control, power is supplied according to the load with a constant voltage. In this case, the discharge automatically stops when the load exceeds the maximum discharge power amount or the remaining capacity of the storage battery decreases. In addition, when a power failure occurs, apart from the control using the home appliance control unit 419 at the time of a power failure described later, if the power consumption exceeds the maximum discharge power amount from the storage battery, a part of it instantaneously at the same time as the power failure A large load can be forcibly cut off. As a result, it is possible to prevent the maximum discharge power amount from being exceeded, and it becomes possible to use necessary home appliances even during a power failure. When the distribution line 11 recovers, the charger / discharger 30 returns to the original control pattern. However, since the remaining capacity of the storage battery is different from that at the time of the power failure, it is not always the same as the control state before the power failure. Further, the power failure detection unit 418 can detect that a power failure has occurred in the house 10 when, for example, power is not supplied to the distribution line 11 for a predetermined time. Further, the power failure detection unit 418 measures the time during which the power failure has continued in the house 10 (hereinafter referred to as a power failure time). For example, the power failure detection unit 418 periodically detects a power failure of the house 10, stores the date and time when the power failure of the home 10 is first detected in the memory 42, and stores the date and time stored in the memory 42 from the current date and time. The power failure time can be calculated by subtracting.

  The absence detection unit 420 detects that the user is absent in the house 10. The absence detection unit 420 measures, for example, whether or not electric power of a predetermined value or more is flowing in the distribution line 11 of the house 10, and when the time during which no electric power of the predetermined value or more continues for a predetermined time or more, It can be determined that the user is absent. The absence detection unit 420 measures the time during which the user is absent in the house 10 (hereinafter referred to as absence time). For example, the absence detection unit 420 periodically detects the absence of the user, stores the date and time when the absence of the user is first detected in the memory 42, and stores the date and time stored in the memory 42 from the current date and time. The absence time can be calculated by subtracting.

  The home appliance control unit 419 transmits a control signal instructing an operation to the home appliance 14 arranged in the house 10. The operation of the home appliance 14 includes, for example, on / off of a switch, illuminance setting of a lighting device, temperature setting of an air conditioner device, TV or radio program setting, and the like. That is, home appliance control unit 419 performs the same operation as, for example, a general infrared remote controller.

The maximum discharge amount determination unit 416 determines the amount of power per unit time discharged from the storage battery 21 (hereinafter referred to as the maximum discharge amount). Details of the discharge amount determination processing by the maximum discharge amount determination unit 416 will be described later.
The switch control unit 421 transmits a control signal to the switch 12.
The charge / discharge instruction signal transmission unit 417 (corresponding to the maximum dischargeable electric energy transmission unit of the present invention) transmits a charge / discharge instruction signal to the charger / discharger 30. In the charge / discharge instruction signal, the amount of power per unit time related to charging or discharging is set.
Hereinafter, the detail of the process which the charger / discharger control apparatus 40 performs is demonstrated.

== Processing at power failure ==
In the power supply system of the present embodiment, power is supplied from the storage battery 21 to the distribution line 11 at the time of a power failure of the house 10. FIG. 15 is a diagram illustrating a flow of processing performed by the charger / discharger control device 40 when the power failure detection unit 418 of the charger / discharger control device 40 detects a power failure of the house 10.

  The charger / discharger control device 40 sets the maximum discharge amount stored in the setting information storage unit 453 as the maximum discharge amount (S901), and transmits a discharge instruction signal with the maximum discharge amount to the charger / discharger 30 (S902). ). As a result, electric power is supplied from the storage battery 21 of the electric vehicle 20 to the distribution line 11 of the house 10.

  The power failure detection unit 418 measures the power failure time in the house 10 (S903). When the measured power outage time is equal to or longer than the predetermined time (S904: YES), the home appliance control unit 419 transmits a control signal to instruct the switch-off to the home appliance 14 which is an air conditioner (S905), A control signal instructing to reduce the illuminance is transmitted to the home appliance 14 which is a lighting device in order to reduce power consumption (S906). In addition, the home appliance control unit 419 transmits a control signal for turning on the switch to the home appliance 14 such as a television or radio, and transmits a control signal instructing to switch to the disaster broadcast channel (S907). .

  The charger / discharger control device 40 acquires the current time and determines whether or not the current time is included in a predetermined night time zone (S908). It is assumed that the night time zone is stored in advance in the storage device 43 of the charger / discharger control device 40. When the current time is included in the night time zone (S908: YES), the home appliance control unit 419 transmits a control signal for instructing to turn on the switch to the home appliance 14 which is a lighting device (S909).

  As described above, when a power failure is detected in the house 10, a discharge instruction signal is transmitted from the charger / discharger controller 40 to the charger / discharger 30, and the distribution line 11 is transferred from the storage battery 21 by the control of the charger / discharger 30. Is supplied with power. Therefore, in the house 10, it is possible to continue the operation of the home appliance 14 using the power from the storage battery 21 even during a power failure.

  Moreover, when the power failure of the house 10 continues for a certain time or more, the power consumption by the home appliance 14 is reduced, such as turning off the air conditioner device and lowering the illuminance of the lighting device. Therefore, the power supply from the storage battery 21 can be performed for a longer time. Instead of turning off the air conditioner device, the set temperature of the air conditioner device may be increased or decreased. That is, it is only necessary to transmit a control signal instructing the operation of the home appliance 14 so that the power consumption of the home appliance 14 in the house 10 where the power failure has occurred can be suppressed.

  In addition, disaster broadcast receivers such as televisions and radios are also turned on, so if a power outage continues, users can recognize the occurrence of the power outage and quickly obtain emergency information at the time of the disaster. . Furthermore, since the lighting device is turned on at night, the user can safely move inside the house 10 even if a power failure occurs at night.

== Processing when absent ==
FIG. 16 is a diagram illustrating a flow of processing performed by the charger / discharger control device 40 when the absence detection unit 420 detects that the user is absent from the house 10.

  When the absence detection unit 420 detects the absence of the user in the house 10, the setting registration unit 415 sets the operation mode of the setting information to “function priority” (S921), and the control unit 326 instructs the switch 323 to turn off. The control signal to transmit is transmitted, the charger / discharger 30 is stopped, and charging / discharging of a storage battery is not performed (S922). Thereby, the safety at the time of absence can be ensured.

  The absence detection unit 420 measures the absence time (S923), and when the measured absence time is equal to or longer than the predetermined time (S924: YES), the home appliance control unit 419 periodically checks while the user is absent from the house 10. Then, a control signal is transmitted to the home appliance 14 so as to repeatedly turn on and off the lighting device (S925).

  As described above, according to the power supply system of the present embodiment, by stopping the power supply to the charger / discharger 30 when the user is absent, safety can be ensured and power consumption can be reduced. . Moreover, according to the charger / discharger control device 40 of this embodiment, when the absence time is long, it is possible to take a security measure in the house 10 in which the lighting device is periodically turned on / off.

  In this embodiment, by controlling the switch 323, the power supply only to the charger / discharger 30 is stopped. However, for example, a large amount of power is consumed due to forgetting to turn off the air conditioner, the warm water washing toilet seat, outdoor lighting, etc. You may make it suppress power consumption by turning off the power supply of an accompanying household appliance.

== Leveling process ==
In the power supply system of the present embodiment, by supplying power to the distribution line 11 by discharging from the storage battery 21 so that the storage amount of the storage battery 21 does not fall below the target storage amount during the set discharge time period. The power consumption in the house 10 is leveled. FIG. 17 is a diagram illustrating the flow of the power consumption leveling process performed by the charger / discharger controller 40. Note that the charger / discharger control device 40 does not perform the process shown in FIG. 17 when the operation mode of the setting information stored in the setting information storage unit 453 is “manual”. Further, the charger / discharger control device 40 performs the power consumption leveling process shown in FIG. 17 every predetermined time (for example, 1 minute, 30 minutes, 1 hour, etc.).

  The charger / discharger control device 40 acquires the current date and time, and determines whether or not the current time is included in the charging time zone of the setting information (S941). When the current time is included in the charging time zone (S941: YES), the charging / discharging instruction signal transmission unit 417 supplies the charging / discharging device 30 with a charging instruction signal in which the charging maximum output of the setting information is attached as the maximum charging / discharging amount. Transmit (S942).

  On the other hand, when the current time is not included in the charging time zone (S941: NO), when the operation mode of the setting information is “lock” (S943: YES), the process ends. That is, when the operation mode is “lock”, the power consumption in the house 10 is not leveled, and the storage battery 21 is only charged during the charging time period.

  When the operation mode is “normal” or “function priority” (S943: NO), the charger / discharger control device 40 acquires the latest remaining charged amount (A) from the charged amount history storage unit 452 (S944). The target storage amount (B) corresponding to the current date and the time after a predetermined time (t) from the current time is calculated and acquired using the pattern storage unit 454 (S945) (target storage amount acquisition unit) ).

  When the remaining power storage amount (A) is equal to or less than the target power storage amount (B) (S946: NO), when the operation mode of the setting information is “function priority” (S947: YES), a charge / discharge instruction signal transmission unit In step S <b> 942, the charging instruction signal is transmitted to the charger / discharger 30. If the operation mode is “normal” (S947: NO), the charge / discharge instruction signal transmission unit 417 transmits a discharge stop signal to the charger / discharger 30 (S948).

  When the remaining power storage amount (A) is larger than the target power storage amount (B) (S946: YES), if “AB” is equal to or greater than the predetermined threshold value α (S949: NO), the maximum charge / discharge amount (C) is set. , “(A−B) / t” (S950), and if “A−B” is less than the threshold value α (S949: YES), the maximum charge / discharge amount (C) is determined by “(A−B−”). α) / t ”(S951).

  Here, when the maximum charge / discharge amount (C) calculated as described above is larger than the maximum discharge output of the setting information (S952: YES), the maximum discharge output of the setting information is set to the maximum charge / discharge amount (C). And

  Next, a discharge instruction signal accompanied by the maximum charge / discharge amount of the setting information is transmitted to the charger / discharger 30, and power supply from the storage battery 21 to the distribution line 11 is started (S954). When power is supplied from the switch 12 to the lead-in line 5 in this state, the reverse flow is prevented from flowing by reducing the maximum discharge amount C (S955). Needless to say, this control is unnecessary when a reverse power flow is observed.

  As described above, the charger / discharger control device 40 of the present embodiment discharges the storage battery 21 while managing so as not to fall below the target charged amount during the discharge time zone of the setting information, and causes the distribution line 11 to Electric power can be supplied. Therefore, by setting a target storage amount pattern according to the frequency of use of the electric vehicle 20, it is possible to avoid a situation where the required storage amount does not remain when the electric vehicle is desired to be used, and to distribute from the storage battery 21. It becomes possible to supply electric power to the electric wire 11 and to level the use of electric power in the house 10. In addition, for example, when the power cost in the charging time zone is set to be lower than the discharging time zone, such as when the midnight power supply time zone is set as the charging time zone, the power cost in the house 10 is reduced. Can do.

  Further, when the operation mode is “function priority”, charging is performed when the remaining power storage amount becomes equal to or less than the target power storage amount in the discharge time zone even in the discharge time zone. As a result, the remaining power storage amount of the storage battery 21 can be reliably maintained at or above the target power storage amount. Therefore, when using an electric vehicle in a discharge time zone, it is possible to reliably avoid a situation where the amount of stored electricity is insufficient.

  As described above, when “A−B <α”, the maximum charge / discharge amount (C) is calculated from “(A−B−α) / t”, while when “A ≦ B”. The discharge is stopped or charged. Therefore, when the remaining power storage amount A approaches the target power storage amount B due to the discharge of the storage battery 21, so-called chattering that repeats discharge and discharge stop (or charge) can be suppressed by suppressing the discharge amount. Further, chattering can also be avoided when “A ≦ B” and “A> B” change for each measurement in the case where a measurement error of the remaining power storage amount of the storage battery 21 occurs.

  Moreover, the setting registration part 415 of this embodiment receives the input of the electrical storage amount of the storage battery 21 from a user by the mileage of the electric vehicle 20 as a unit. Therefore, even the user of the electric vehicle 20 who is unfamiliar with the unit of electricity can intuitively specify the amount of stored electricity.

  Although the present embodiment has been described above, the above embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

  For example, in the present embodiment, it is assumed that the charger / discharger 30 and the charger / discharger control device 40 are separate, but an apparatus that combines the configurations of the charger / discharger 30 and the charger / discharger control device 40 is employed. Also good.

  In the present embodiment, the driving status display unit 414 displays the remaining power storage amount and the target power storage amount on the screen 50. In addition, the operation status display unit 414 calculates the amount of reduction in the power cost of the house 10, The calculated reduction amount may be displayed on the screen 50. The reduction amount D is performed as follows, for example. In addition, the following is a case at the time of interconnection, and all electric energy shall be measured in an alternating current part.

Reduction electric bill X 1 in daytime (time zone other than the nighttime), the electricity unit price a 1 during discharge (yen / kWh), as storage battery utilizing an AC power amount A 1 (kWh), obtained by the following equation .
X 1 = Σ [a 1 × A 1 × Δt]
The unit price of electricity varies with time.
Next, electricity bill X 2 required to charge the day and night, as the electricity unit price a 2 at the time of charging (yen / kWh), and the charging time consumption AC electric energy (kWh), obtained by the following equation.
X 2 = Σ [a 2 × A 2 × Δt]
The above-mentioned X 1 and X 2 are calculated every day, and the amount of power used at home is B (kWh), the power consumption during charging is C (kWh), and the charge / discharge efficiency is Y. It is obtained by the following formula.
D = X 1 −X 2 × B ÷ (C × Y)
The driving status display unit 414 can output the reduction amount D obtained as described above to the screen 50.

  In this case, the user can visually recognize the saving effect by the power supply system of the present embodiment. Further, by calculating the reduction amount D by this method, the power of the present embodiment can be calculated without calculating the power used as an electric vehicle or the electricity cost when the power supply system of the present embodiment is not used. The electricity cost reduction effect by the supply system can be directly calculated.

  In addition, the operation status display unit 414 includes past discharge characteristic information (corresponding to the reference characteristic information of the present invention) stored in the discharge characteristic storage unit 451, and discharge characteristic information received by the discharge characteristic reception unit 411. May be detected, and when the storage battery 21 is deteriorated, that fact may be displayed on the screen 50.

  In the present embodiment, the switch 12 is provided between the distribution board 13 and the lead-in wire 5. However, the charger / discharger controller 40 is connected to the distribution board 13, and the appliance is connected to the distribution board 13. You may make it control whether the power distribution with respect to the apparatus 14 is performed.

  In this embodiment, the night time zone is set in advance in the memory 42 of the charger / discharger control device 40. However, an illuminance sensor is installed inside the house 10, and the charger / discharger control device 40 and the illuminance are set. It may be connected to a sensor so that the charger / discharger control device 40 acquires illuminance from the illuminance sensor, and the acquired illuminance falls below a predetermined value, so that it is determined that it is a night time zone. In this case, when the interior of the house 10 becomes dark, the lighting device can be turned on regardless of day or night, so that the interior of the house 10 can be brightened even during a power failure.

  In addition, the absence detection unit 420 detects that the user is absent from the house 10 and then changes the operation mode of the setting information storage unit 453 to “function priority” when it is determined that the user is absent continuously for a predetermined time. It may be.

  In addition, the charger control device 40 can notify a crime-related abnormality that occurs in the electric vehicle 20. At this time, the electric vehicle 20 has a vibration sensor that detects that vibration has been applied to the electric vehicle 20, a human sensor that detects that a person has approached the electric vehicle 20, and the validity of the key of the electric vehicle 20. A security device such as an immobilizer for authentication, and a control circuit having a conductive switch connected to the security device and the storage battery 21 and capable of energizing or interrupting a current path between the storage battery 21 and the distribution line 11 are provided. When an abnormality is detected, the control circuit is notified of this, and the control circuit causes the conductive switch to interrupt the current path between the storage battery 21 and the distribution line 11 in response to the notification from the security device. On the other hand, the charger / discharger 30 detects that the current path between the distribution line 11 and the storage battery 21 is interrupted when the first switch 323 is turned on, and the charger / discharger 40 indicates that fact. When the charger / discharger control device 40 receives notification that the current path between the storage battery 21 and the charger / discharger 30 has been cut off, the charger / discharger control device 40 displays a message indicating that an abnormality has occurred in the electric vehicle 20 on the touch panel display. 48 is output. Thus, when the crime prevention device (various sensors) installed in the electric vehicle 20 detects an abnormality, the charging / discharging of the storage battery 21 is forcibly stopped on the electric vehicle 20 side, so that it is installed in the house 10. In the touch panel display 48 to be performed, an abnormality occurring in the electric vehicle 20 can be notified. Therefore, a user in the house 10 can recognize an abnormality occurring in the electric vehicle 20 outside the house 10 inside the house 10. In other words, the power line connecting the storage battery 21 and the connector 31 can be used as a communication line for transmitting the fact that an abnormality has occurred in the electric vehicle 20.

It is a figure showing the whole electric power supply system composition concerning this embodiment. 2 is a diagram illustrating a hardware configuration of a charger / discharger 30. FIG. 2 is a functional block diagram of a charger / discharger 30. FIG. It is a figure which shows the hardware constitutions of the charger / discharger control apparatus. 3 is a functional block diagram of a charger / discharger control device 40. FIG. It is a figure which shows the structural example of the discharge characteristic memory | storage part 451. FIG. It is a figure which shows the structural example of the electrical storage amount log | history memory | storage part 452. It is a figure which shows the structural example of the setting information memorize | stored in the setting information storage part. 5 is a diagram illustrating a configuration example of a pattern storage unit 454. FIG. 5 is a diagram illustrating a configuration example of an application information storage unit 455. FIG. It is a figure which shows an example of the screen 50 which the driving condition display part 414 displays. It is a figure which shows an example of the input screen 60 used for the registration process of setting information. It is a figure which shows an example of the input screen 70 of the target electrical storage amount. It is a figure which shows an example of the input screen 80 used for the registration process of the date which applies the pattern of target electrical storage amount. It is a figure which shows the flow of the process by the charger / discharger control apparatus 40 when the power failure detection part 418 of the charger / discharger control apparatus 40 detects the power failure of the house 10. FIG. It is a figure which shows the flow of the process by the charger / discharger control apparatus when the absence detection part 420 detects that a user is absent in the house. It is a figure which shows the flow of the charging / discharging control process of the storage battery 21 by the charger / discharger control apparatus 40. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Lead-in wire 10 House 11 Distribution line 12 Switch 13 Distribution board 14 Home appliance 15 Radio communication path 20 Electric vehicle 21 Storage battery 30 Charger / Discharger 31 Connector 321 Charge / discharge unit 323 Switch 326 Control part 327 Memory 328 I / O interface 331 Discharge Characteristic acquisition unit 332 Discharge characteristic transmission unit 333 Remaining power storage amount acquisition unit 334 Remaining power storage amount transmission unit 335 Charge / discharge instruction signal reception unit 336 Charge / discharge switching unit 337 Charge / discharge control unit 351 Maximum charge / discharge amount storage unit 40 Charge / discharge device controller 41 CPU
42 Memory 43 Storage Device 44 Wireless Communication Interface 45 I / O Interface A
46 I / O interface B 47 Display interface 48 Touch panel display 411 Discharge characteristic reception unit 412 Discharge characteristic transmission unit 413 Remaining charged amount reception unit 414 Operation status display unit 415 Setting registration unit 416 Maximum discharge amount determination unit 417 Charge / discharge instruction signal transmission unit 418 Power failure detection unit 419 Home appliance control unit 420 Absence detection unit 421 Switch control unit 451 Discharge characteristic storage unit 452 Storage amount history storage unit 453 Setting information storage unit 454 Pattern storage unit 455 Application information storage unit 50 Screen 51 Graph display field 52 Setting Field 521 “Normal” button 522 “Function priority” button 523 “Lock” button 524 “Manual” button 53 Setting button 60 Input screen 61 Display button 62 Pattern registration button 63 Pattern application button 64 Display field 65 Power field 70 Input screen 71 Display button 72 Pattern application button 73 Specification field 74 Graph display field 75 Input field 751 Setting field 752 Setting field 80 Input screen 81 Display button 82 Pattern registration button 83 Input field 831 List box 832 List box 833 List box 834 Date specification field 835 List box 84 Graph display field

Claims (9)

  1. An electric power supply system for supplying electric power from a storage battery of an electric vehicle to a distribution line of a commercial power system,
    A charger / discharger having a communication function and controlling the amount of power supplied from the storage battery to the distribution line;
    An information processing device that is communicably connected to the charger / discharger,
    The charger / discharger is
    A remaining storage amount acquisition unit that acquires a remaining storage amount that is a storage amount at a time t1 of the storage battery;
    A remaining power storage amount transmitting unit that transmits the remaining power storage amount to the information processing device,
    The information processing apparatus includes:
    A remaining charge amount receiving unit for receiving the remaining charge amount from the charger / discharger;
    In association with information indicating time, a target storage amount storage unit that stores a target storage amount that is a storage amount that the storage battery should have at the time;
    A target storage amount acquisition unit that acquires the target storage amount corresponding to time t2 after a predetermined time from the time t1 from the target storage amount storage unit;
    Maximum discharge for determining a maximum dischargeable power amount per unit time that can be discharged from the storage battery based on the target storage amount and the remaining storage amount when the remaining storage amount is larger than the acquired target storage amount A possible electric energy determination unit;
    A maximum dischargeable electric energy transmitting unit that transmits the maximum dischargeable electric energy to the charger / discharger, and
    The charger / discharger is
    A maximum dischargeable electric energy receiving unit for receiving the maximum dischargeable electric energy from the information processing device;
    A discharge amount control unit that controls the discharge amount per unit time from the storage battery to be equal to or less than the maximum dischargeable power amount,
    Power supply system characterized by
  2. The power supply system according to claim 1,
    The maximum dischargeable power amount determination unit calculates the maximum dischargeable power amount per unit time by the following formula (the remaining power storage amount−the target power storage amount) / (the time t2−the time t1).
    The power supply system characterized by calculating by the above.
  3. The power supply system according to claim 1,
    The information processing apparatus includes a limit discharge amount storage unit that stores a limit value of the discharge power amount,
    The maximum dischargeable power amount determining unit, when the determined maximum dischargeable power amount per unit time is larger than the rated discharge amount, the rated discharge amount as the maximum dischargeable power amount,
    Power supply system characterized by
  4. The power supply system according to claim 1,
    The information processing apparatus includes:
    A discharge time zone storage unit for storing information indicating a time zone for supplying power from the storage battery to the distribution line;
    When the time t1 is not included in the time zone, a charging instruction transmission unit that transmits a charging instruction signal instructing to supply power to the storage battery from the distribution line to the charger / discharger, and
    The charger / discharger is
    A charge instruction signal receiving unit for receiving the charge instruction signal from the information processing apparatus;
    A switch that cuts off the power supply from the storage battery to the distribution line and switches the power supply from the distribution line to the storage battery in response to receiving the charge instruction signal,
    Power supply system characterized by
  5. The power supply system according to claim 1,
    The information processing apparatus includes:
    When the amount of remaining power storage is less than the target power storage amount, a charge instruction transmission unit that transmits a charge instruction signal for instructing to supply power to the storage battery from the distribution line to the charger / discharger,
    The charger / discharger is
    A charge instruction signal receiving unit for receiving the charge instruction signal from the information processing apparatus;
    A switch that cuts off the power supply from the storage battery to the distribution line and switches the power supply from the distribution line to the storage battery in response to receiving the charge instruction signal,
    Power supply system characterized by
  6. The power supply system according to claim 1,
    The maximum dischargeable energy determining unit is
    When the value obtained by subtracting the target power storage amount from the remaining power storage amount is a predetermined value or more,
    (The remaining power storage amount−the target power storage amount) / (the time t2−the time t1).
    To calculate the maximum dischargeable electric energy per unit time,
    When the value obtained by subtracting the target power storage amount from the remaining power storage amount is less than the predetermined value,
    (The remaining power storage amount−the target power storage amount−the predetermined value) / (the time t2−the time t1).
    Calculating the maximum dischargeable electric energy per unit time by
    Power supply system characterized by
  7. The power supply system according to claim 1,
    The target storage amount storage unit stores the target storage amount in association with information indicating a day of the week and information indicating the time,
    The maximum dischargeable power amount determination unit acquires the target power storage amount corresponding to the time t2 and the current day of the week;
    Power supply system characterized by
  8. The power supply system according to claim 1,
    The charger / discharger is
    A discharge characteristic acquisition unit for acquiring discharge characteristics of the storage battery;
    A discharge characteristic transmitting unit that transmits information indicating the discharge characteristic to the information processing apparatus,
    The information processing apparatus includes:
    A discharge characteristic receiver for receiving information indicating the discharge characteristic from the charger / discharger;
    A reference characteristic information storage unit for storing reference characteristic information indicating a discharge characteristic serving as a reference for the storage battery;
    A characteristic change detection unit for detecting a characteristic change of the storage battery by comparing the information indicating the discharge characteristic and the reference characteristic information;
    A characteristic change notification unit that outputs a signal indicating that the storage battery has changed characteristics when the characteristic change is detected;
    Power supply system characterized by
  9. The power supply system according to claim 1,
    The electric vehicle includes a travelable distance calculation device that calculates and displays a travelable distance that is estimated that the electric vehicle can travel based on discharge characteristics of the storage battery,
    The information processing device is communicably connected to the travelable distance calculating device,
    The charger / discharger is
    A discharge characteristic acquisition unit for acquiring discharge characteristics of the storage battery;
    A discharge characteristic transmitting unit that transmits information indicating the discharge characteristic to the information processing apparatus,
    The information processing apparatus includes:
    A discharge characteristic receiver for receiving information indicating the discharge characteristic transmitted from the charger / discharger;
    A discharge characteristic transmission unit that transmits information indicating the discharge characteristic to the travelable distance calculating device,
    Power supply system characterized by

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