JP3758986B2 - Power control system - Google Patents

Power control system Download PDF

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Publication number
JP3758986B2
JP3758986B2 JP2001112030A JP2001112030A JP3758986B2 JP 3758986 B2 JP3758986 B2 JP 3758986B2 JP 2001112030 A JP2001112030 A JP 2001112030A JP 2001112030 A JP2001112030 A JP 2001112030A JP 3758986 B2 JP3758986 B2 JP 3758986B2
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Prior art keywords
power
secondary battery
system
electric vehicle
house
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JP2002315193A (en
Inventor
勉 橋本
英彦 田島
祐一 藤岡
汎 高塚
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三菱重工業株式会社
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
    • 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
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/0006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02J3/322Arrangements for balancing of the load in a network by storage of energy using batteries with converting means 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
    • 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
    • Y02T10/7038Energy storage management
    • Y02T10/7044Controlling the battery or capacitor state of charge
    • 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
    • Y02T10/7038Energy storage management
    • Y02T10/705Controlling vehicles with one battery or one capacitor only
    • 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
    • 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
    • Y02T90/167Systems 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]
    • Y02T90/168Remote or cooperative charging operation
    • 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]
    • 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
    • Y04S30/00Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12Remote or cooperative charging

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a system for controlling electric power of an electric vehicle.
[0002]
[Prior art]
For conventional automobiles that use gasoline and light oil, which are currently mainstream, supply issues such as large fluctuations in fuel prices and a decrease in crude oil reserves, environmental issues such as emissions of greenhouse gases and environmental pollutants There is a problem. Therefore, development of automobiles with less environmental concerns and less environmental concerns is progressing, such as electric vehicles, fuel cell vehicles, and CNG (compressed natural gas) vehicles.
[0003]
In particular, a complete electric vehicle using only a secondary battery as a power source is a completely emission-free vehicle (ZEV) having zero exhaust gas, and its spread is desired. However, when trying to obtain the same performance as that of a conventional gasoline vehicle or the like, the required specifications such as the energy density, output density, and cycle life of the secondary battery become very high. In order to satisfy this requirement, high-cost secondary batteries had to be used, which led to a delay in popularization.
[0004]
The problem of cost can be overcome by lowering the cost by technological development and increasing the production volume due to the spread. Regarding the increase in production (= promoting diffusion), it is also important to develop ideas and related systems on how to effectively use high-cost products to lower real costs at the initial stage of diffusion. .
[0005]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to provide a power control system and a power control method that can use a secondary battery of an electric vehicle as household power.
[0006]
Another object of the present invention is to provide a power control system and a power control method that can be used as a household power storage device.
[0007]
Still another object of the present invention is to provide a power control system and a power control method capable of reducing power charges at home.
[0008]
Still another object of the present invention is to provide a power control system and a power control method that can automatically control charging of a secondary battery of an electric vehicle.
[0009]
Still another object of the present invention is to provide a power control system and a power control method capable of automatically controlling the discharge of a secondary battery of an electric vehicle for household power.
[0010]
Still another object of the present invention is to provide a power control system and a power control method that can be used as an emergency power source for home use.
[0011]
Still another object of the present invention is to provide a power control system and a power control method capable of reducing the substantial cost of an electric vehicle.
[0012]
Still another object of the present invention is to provide a power control system and a power control method capable of promoting the spread of electric vehicles.
[0013]
[Means for Solving the Problems]
The figure numbers and symbols in the means for solving the problems are described in order to show the correspondence between the claims and the embodiments of the invention, and are used for the interpretation of the claims. Must not.
[0014]
In order to solve the above problems, an electric power control system of the present invention includes an electric vehicle (FIGS. 1 and 1) having a secondary battery (FIGS. 1 and 2), a power supply system, and power of a house (FIGS. 1 and 4). Connected to the grid, connectable to the secondary battery (Figs. 1 and 2) of the electric vehicle (Figs. 1 and 1), and feed power from the feed power grid of the house (Figs. 1 and 4). And a control box (FIGS. 1 and 3) for supplying power to the power system.
When the electric vehicle (FIGS. 1 and 1) is connected to the control box (FIGS. 1 and 3) and the charge amount of the secondary battery exceeds a preset reference remaining amount, the power supply is performed. Without supplying the feeding power from the power system to the power system of the house (FIGS. 1 and 4), the battery power of the secondary battery (FIGS. 1 and 2) is supplied to the house (FIGS. 1 and 4). Supply to the power grid.
[0015]
Further, in the power control system of the present invention, in the power control system described above, when the control box (FIGS. 1 and 3) has a charge amount of the secondary battery (FIGS. 1 and 2) less than the reference remaining amount, Without using the battery power from the secondary battery (FIGS. 1 and 2) to the power system of the house (FIGS. 1 and 4), the secondary battery can be used by using the power supplied from the power supply system. (FIGS. 1 and 2) are charged.
[0016]
The power control system of the present invention is connected to an electric vehicle (FIGS. 1 and 1) having a secondary battery, a power supply system and a power system of a house (FIGS. 1 and 4), and the electric vehicle (FIG. 1). 1), and a control box (FIGS. 1 and 3) for supplying power from the power feeding system to the power system of the house (FIGS. 1 and 4).
The control box (FIGS. 1 and 3) is connected to the electric vehicle (FIGS. 1 and 1), and uses the power from the power feeding system only during the midnight power rate time period. The battery (FIGS. 1 and 2) is charged.
[0017]
Furthermore, the power control system of the present invention includes an electric vehicle (FIGS. 1 and 1) having a secondary battery (FIGS. 1 and 2), a feeding power system, and the secondary battery (FIGS. 1 and 1). 1 and 2) and the power system of the house (FIGS. 1 and 4), and the power supplied from the power supply system is used as the power system of the house (FIGS. 1 and 4) and the electric vehicle (FIG. 1). 1) and a control box (FIGS. 1 and 3) for supplying the secondary battery (FIGS. 1 and 2).
The control box (FIGS. 1 and 3) supplies the battery power of the secondary battery (FIGS. 1 and 2) to the house (FIGS. 1 and 4) when the supply of the power supply from the power supply system is stopped. ) To the power system.
[0018]
Furthermore, the power control system of the present invention is the above-described power control system, wherein the control box (FIGS. 1 and 3) is further charged when the secondary battery (FIGS. 1 and 2) is charged or discharged. The charge / discharge data of FIGS. 1 and 2 is acquired, and the characteristics of the secondary battery (FIGS. 1 and 2) are diagnosed based on the reference charge / discharge data of the secondary battery held in advance and the charge / discharge data.
[0019]
Further, the power control system of the present invention belongs to a user (FIGS. 7 and 13), an electric vehicle (FIGS. 7 and 1) having a secondary battery (FIGS. 7 and 2), and the user (FIGS. 7 and 13). Connected to a power feeding system and a power system of a house, connectable to the electric vehicle (FIGS. 7 and 1), and supply power from the power feeding power system to the power system of the house (FIGS. 7 and 4) Control box (FIGS. 7 and 3) and a remote monitoring system (FIGS. 7 and 15) belonging to the manufacturer (FIGS. 7 and 14).
The control box (FIGS. 7 and 3) acquires charge / discharge data of the secondary battery (FIGS. 7 and 2) when the secondary battery (FIGS. 7 and 2) is charged or discharged, and the remote monitoring system The charge / discharge data is transmitted to (FIGS. 7 and 15). And the said remote monitoring system (FIG. 7, 15) is based on the said charging / discharging data and the reference charging / discharging data of the secondary battery previously hold | maintained by the said remote monitoring system (FIG. 7, 15). The characteristics of (FIGS. 7 and 2) are diagnosed, and the result of the diagnosis is transmitted to the control box (FIGS. 7 and 3).
[0020]
Furthermore, in the power control system of the present invention, in the above power control system, the house (FIG. 6 or 7, 2) inputs and outputs information to the control box (FIG. 6 or 7, 3). And an indoor control unit (FIG. 6 or 7, 12).
[0021]
Furthermore, the power control system of the present invention further includes a backup secondary battery (FIGS. 8 and 16) capable of storing electricity. The control box (FIGS. 8 and 3) is further connected to the backup secondary battery (FIGS. 8 and 16), and the supply of the power supplied from the electric vehicle (FIGS. 8 and 1) is stopped. In this case, the battery power of the spare secondary battery (FIGS. 8 and 16) is supplied to the power system of the house (FIGS. 8 and 4).
[0022]
Furthermore, in the power control system of the present invention, the control box (FIGS. 8 and 3) uses the power from the power supply system only during the midnight power charge time period to use the standby secondary battery (FIGS. 8 and 16). ).
[0023]
In order to solve the above problem, the power control method of the present invention is such that the charge amount of the secondary battery (FIGS. 1 and 2) mounted on the electric vehicle (FIGS. 1 and 1) is less than a preset reference remaining amount. In this case, the secondary battery (FIG. 1) is supplied using the power supplied from the power supply system without supplying the battery power from the secondary battery (FIGS. 1 and 2) to the power system of the house (FIGS. 1 and 4). , 2) and when the amount of charge exceeds the reference remaining amount, the battery power (FIGS. 1 and 2) is supplied to the power system without supplying the power supply to the power system. Step.
[0024]
Further, the power control method of the present invention allows the control box (FIGS. 7 and 3) belonging to the user to charge or discharge the secondary battery (FIGS. 7 and 2) mounted on the electric vehicle (FIGS. 7 and 1). And acquiring the charge / discharge data of the secondary battery (FIGS. 7 and 2) and the control box (FIGS. 7 and 3) sending the charge / discharge data to the remote monitoring system (FIGS. 7 and 15) belonging to the manufacturer. Transmitting, and the remote monitoring system (FIGS. 7 and 15) is based on the charge / discharge data and the reference charge / discharge data of the secondary battery previously held by the remote monitoring system (FIGS. 7 and 15). Diagnosing characteristics of the secondary battery (FIGS. 7 and 2), and the remote monitoring system (FIGS. 7 and 15) transmitting the results of the diagnosis to the control box (FIGS. 7 and 3). To do.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Example 1
First, the basic concept of the present embodiment in the power control system according to the present invention will be described.
If the capacity of a secondary battery for household electricity storage for a general household (a household with a monthly average electricity bill of about 10,000 yen) is about 16 kWh, the amount of power for one day is sufficient.
On the other hand, when the average mileage per charge is set to 200 to 400 km, the electric vehicle needs to be mounted with a secondary battery of about 20 to 40 kWh. However, the mileage of an automobile used in a normal home on a normal weekday is about several tens of kilometers. That is, the power capacity used as an automobile is about several kWh. Therefore, in ordinary household use, the remaining power of about tens of kWh to about 30 kW exists in the secondary battery in the electric vehicle in an unused state. From the above, it can be seen that in an electric vehicle, a lot of unused electric power remains, and even when the remaining electric power is used as household electric power, a necessary and sufficient amount can be secured.
[0026]
Here, the electricity rate difference due to late-night electricity in a general household is 70 to 80,000 yen / year. If a secondary battery of an electric vehicle is used for 10 years at home as described above, it is possible to reduce the electricity bill by 700,000 to 800,000 yen by covering all charging with midnight power. Therefore, by using the secondary battery of the electric vehicle not only for the driving power source for the automobile but also for the use as a household power storage device, the secondary battery can be used effectively and the economic efficiency of the electric vehicle is improved.
That is, it is possible to greatly contribute to the promotion of the popularization of electric vehicles.
[0027]
Hereinafter, a first embodiment of a power control system according to the present invention will be described with reference to the accompanying drawings. In this embodiment, a power control system including a house connected to a power feeding power system and an electric vehicle having a secondary battery will be described. Other facilities having a secondary battery and other facilities connected to the power feeding power system The present invention can also be applied to a combination such as a moving body. Here, the feed power system is a power system that supplies power to ordinary households and facilities.
[0028]
FIG. 1 is a block diagram showing the configuration of a first embodiment of the power control system of the present invention, which is composed of an electric vehicle 1, a secondary battery 2, a control box 3, a house 4, and a switchboard 5. Referring to FIG. 2, the control box 3 includes an interconnection unit 6, an AC / DC conversion unit 7, and a control unit 8. And for the connection of electric power, the interconnection part 6 and the house 4 are connected by the feed line 11, and the AC / DC conversion part 7 and the secondary battery 2 are connected by the charge / discharge line 9, respectively. . Moreover, the control part 8 is connected with the secondary battery 2 by the charge amount detection line 10, and performs the control.
[0029]
In the present invention, the secondary battery 2 mounted as a power source of the electric vehicle 1 is also used as a general household power source. That is, the secondary battery 2 is charged with inexpensive late-night power out of the power from the power feeding power system as the power feeding power. When the electric vehicle 1 is not used in the daytime, the power of the secondary battery 2 as battery power is supplied to the power system of the house 4 as household power. Since the inexpensive late-night power stored in the secondary battery 2 can be used, it is possible to significantly reduce the power charge of a general household having the electric vehicle 1. And even if it does not use the electric vehicle 1, the frequency | count of utilization of the secondary battery 2 increases and the utilization factor improves.
[0030]
Now, the configuration of the first embodiment of the power control system of the present invention will be described in detail.
Referring to FIG. 1, an electric vehicle 1 is an electric vehicle equipped with a secondary battery 2 as a power source. In this embodiment, it is a complete electric vehicle using only the secondary battery 2 as a power source. However, if the secondary battery 2 is mounted, it is not always necessary to be a complete electric vehicle. The electric vehicle 1 is stored in the garage or parking lot of the user's house 4 when not in use.
[0031]
The secondary battery 2 is a secondary battery (storage battery) that is mounted on the electric vehicle 1 and used as a power source. Lead acid batteries, nickel-cadmium batteries, nickel metal hydride batteries, lithium ion batteries, lithium batteries, and the like are used. In this embodiment, a lithium-manganese battery having a high energy density is used. Usually, when the electric vehicle 1 is not used, it is connected to the control box 3 by the charge / discharge line 9 and the charge amount detection line 10 and controlled in the garage or parking lot of the user's house 4. And by the control, the charge using night electric power and the electric power supply (discharge) to the electric power system (distribution panel 5) of the house 4 are performed.
[0032]
The control box 3 is a control device that is connected to each of the feeding power system, the house 4, and the electric vehicle 1 and controls the movement of power between them. It is in the garage or parking lot where the electric vehicle 1 is located. The control is as follows: (1) The electric power from the power supply system is sent to the power system (distribution panel 5) of the house 4 for use in the house 4. (2) The secondary battery of the electric vehicle 1 supplies the power from the power supply system. (2) Send to the electric vehicle 1 to charge 2. (3) (1) + (2) are performed simultaneously. (4) The secondary battery 2 of the electric vehicle 1 is discharged and the electric power of the secondary battery 2 is supplied. It relates to four types of sending to the house 4. Details of the control box 3 will be described with reference to FIG.
[0033]
The interconnection unit 6 relays the power movement related to the controls (1) to (4) described above under the control of the control unit 8 (described later). That is, in the case of (1), the power from the power feeding system is supplied only to the power system of the house 4. In the case of {circle around (2)}, the power from the power feeding system is supplied only to the secondary battery 2 of the electric vehicle 1 (to the AC / DC converter 7). In the case of {circle around (3)}, power from the power feeding power system is supplied simultaneously to the power system of the house 4 and the secondary battery 2 of the electric vehicle 1. In the case of {circle around (4)}, the power from the power feeding power system is stopped, and the power of the secondary battery 2 of the electric vehicle 1 is sent to the power system of the house 4.
In addition, when an abnormality occurs on one side of the feeding power system or the secondary battery 2 (voltage, current, or frequency abnormality), both connections are quickly disconnected so that the abnormality does not propagate to the other side. Perform protection control. Furthermore, it has a function of preventing surges from entering from the harmonic suppression filter and the feed power system.
[0034]
The AC / DC converter 7 has a voltage adjustment function and a frequency adjustment function. That is, when the secondary battery 2 is charged, AC power sent from the power feeding system via the interconnection unit 6 is converted to DC power for charging. The set value of the DC voltage can be changed depending on the type of the secondary battery 2. On the other hand, when the secondary battery 2 discharges (supplies power to the house 4), the DC power from the secondary battery 2 is converted into AC power (general household power, for example, 100V, 50Hz). .
[0035]
The control unit 8 monitors and controls each unit so that a harmonious operation can be performed as a whole. In particular, with respect to the above (1) to (4), the interconnection unit 6, the AC / DC conversion unit 7, and the secondary battery 2 are controlled.
In the case of {circle around (1)}, the interconnection unit 6 is controlled so that the power from the power feeding system is supplied only to the power system of the house 4.
In the case of {circle around (2)}, the charge amount of the secondary battery 2 is confirmed by the charge amount detection line 10. When the amount of charge is less than a preset value, and in the case of a late-night power charge time period, the interconnection unit 6 and the AC / DC conversion unit 7 are controlled so that charging is performed from the power feeding power system. To do. Even when it is not in the late-night electricity rate period, in the case where the electric vehicle 1 needs to be moved urgently, it is charged in the same manner by receiving a charging instruction from an external input device (not shown). I do.
In the case of (3), control is performed at the time of emergency charging in the case where there is normal power usage in the house 4 in the time zone of the late-night electricity rate or when the electric vehicle 1 needs to be moved urgently in the daytime. The unit 8 controls the interconnection unit 6 so as to supply power to both the house 4 and the electric vehicle 1.
In the case of {circle around (4)}, in the daytime period when the electric vehicle 1 is not used, the power of the secondary battery 2 charged in the late-night power charge time period is discharged and supplied to the power system of the house 4. For this purpose, the AC / DC conversion unit 7 is controlled, the secondary battery 2 is discharged and the electric power is converted into AC power (commercial power, for example, 100 V, 50 Hz), the interconnection unit 6 is controlled, and the power supply system The power from the AC / DC converter 7 is supplied to the power system of the house 4.
[0036]
Input of control contents to the control unit 8 is performed by a simple terminal (not shown) with a display attached to the control box 3. However, it is also possible to connect a simple terminal with a display (not shown) to the inside of the house 4 and control from the inside of the house 4 by wireless or wired.
Further, data related to charging / discharging (charging / discharging data serving as a reference and charging / discharging data of the secondary battery 2 measured for each charging / discharging) necessary for knowing the remaining amount of charge is stored in a storage unit ( (Not shown).
[0037]
The charge / discharge line 9 is an electric wire that connects the AC / DC converter 7 and the secondary battery 2 and exchanges power. The positive electrode and the negative electrode of the secondary battery 2 are connected to the positive electrode and the negative electrode of the AC / DC converter 7, respectively.
[0038]
The charge amount detection line 10 is a voltage line for measuring the inter-terminal voltage of the secondary battery 2 in order for the control unit 8 to detect the charge amount of the secondary battery 2. The relationship between the inter-terminal voltage detected by the charge amount detection line 10, the discharge capacity held in advance (the power capacity discharged from the fully charged secondary battery 2), and the inter-terminal voltage of the secondary battery 2. From FIG. 3 (described later), the control unit 8 detects the remaining power of the secondary battery 2. Thereby, the control part 8 starts charge, when the residual amount of the secondary battery 2 becomes smaller than the value of the preset power capacity.
[0039]
The operation of the first embodiment of the power control system of the present invention will be described in detail with reference to FIGS.
First, the charging operation of the electric vehicle 1 will be described.
With reference to FIG.2 and FIG.4, first, as a premise, when the user does not use, the electric vehicle 1 is stored in a garage or a parking lot, and the charge / discharge line 9 and the charge amount detection line 10 are connected. . In this state, the control unit 8 performs the following control to execute the operation of the power control system.
The controller 8 measures the inter-terminal voltage of the secondary battery 2 at the charge amount detection line 10 at appropriate time intervals (S101). Then, the remaining amount of charge of the secondary battery 2 is calculated from the inter-terminal voltage. An appropriate time interval can be set by the control unit 8 every 5 minutes or every 30 minutes.
[0040]
Here, a method for calculating the remaining amount of charge of the secondary battery 2 from the inter-terminal voltage will be described. FIG. 3 shows the relationship between the discharge capacity, which is the power capacity discharged from the secondary battery 2 (from the fully charged state), and the inter-terminal voltage of the secondary battery 2. In the case of charging, the voltage starts from zero (the right end of the curve) and proceeds in the reverse direction, and reaches the maximum voltage (the left end of the curve) when fully charged. The capacity (Ah) discharged from the secondary battery 2 and the vertical axis represent the inter-terminal voltage of the secondary battery 2. As can be seen from this figure, if the battery is normal, the voltage between the terminals gradually decreases as the discharge capacity increases. The tendency in the normal case is almost the same among the individual secondary batteries. That is, if the inter-terminal voltage is detected, the discharge capacity of the secondary battery 2 can be known, so that the remaining amount of charge can be known. Data related to charging / discharging (charging / discharging data serving as a reference and charging / discharging data of the secondary battery 2 measured for each charging / discharging) is held in the control unit 8.
[0041]
Next, the calculated remaining amount of charge of the secondary battery 2 is compared with the set value (S102).
Here, the set value is a reference remaining amount set in advance, and is determined based on the expected usage distance of the electric vehicle 1 within a predetermined period (for example, the next day) (for example, movement of the electric vehicle 1). The amount of power used the next day + the amount of standby power). A value obtained by adding the amount of power used in the house to the value may be used. Further, the fully charged power may be set as the set value.
[0042]
When the remaining amount of charge of the secondary battery 2 is smaller than a set value that is a reference remaining amount, charging is necessary. Therefore, the current time is confirmed (S103). Here, the time confirmation is performed because the rechargeable battery 2 is charged in the late-night power charge time zone where the power charge is low (except in an emergency case). It is possible to change the setting to another time).
[0043]
If the time is within the midnight power period, charging is performed (S105). The amount of charge is not less than the previously set reference remaining amount. The time required for charging in the normal mode is 8 hours with a battery capacity of 40 kWh and 100 V-50 Hz charging. In rapid mode, it is 3 hours.
[0044]
When the time is not in the midnight time zone, it is determined whether or not urgent charging is required, such as when the electric vehicle 1 is suddenly needed (S104). If it is necessary to charge the battery urgently, the battery is charged in the rapid mode (S105).
Then, when it is not necessary to charge urgently or when the remaining amount of charge is greater than the set value, the charging process is terminated. An appropriate amount of charge can be maintained by automatically performing the above operations as appropriate.
[0045]
Next, the operation when charging is not performed will be described. Since charging is normally performed at midnight, from morning to night, it is a time zone in which the power stored in the secondary battery 2 is used.
As a premise, when the user does not use the electric vehicle 1, the electric vehicle 1 is stored in a garage or a parking lot, and the charge / discharge line 9 and the charge amount detection line 10 are connected. The user of the electric vehicle 1 inputs the daily use schedule of the electric vehicle 1 to the control unit 8 of the control box 3. The input contents are a use distance and a use time, and the schedule of the day may be input on the day, but it is preferable to input it by the previous day.
First, the control unit 8 calculates the scheduled power consumption that the electric vehicle 1 uses for movement on the day based on the schedule held inside (S201). Next, the inter-terminal voltage of the secondary battery 2 is measured by the charge amount detection line 10 (S202). Then, the remaining charge amount of the secondary battery 2 is calculated from the measured inter-terminal voltage based on the data in FIG.
[0046]
Then, the calculated remaining charge amount (current charge amount) is compared with the scheduled power consumption amount. At this time, the reserve amount (+ α) of the planned power consumption is taken into consideration, and the remaining charge amount is compared with the planned power consumption + α (S203). If the current charge amount (remaining amount of charge)> expected power amount to be used + α, the secondary battery 2 has a surplus power, so the surplus power is used in the house 4. The control unit 8 controls the AC / DC conversion unit 7 and the interconnection unit 6 to supply surplus power of the secondary battery 2 to the power system of the house 4 (S204). However, if a stop signal for stopping the supply of surplus is received on the way, the supply is stopped (S205). The signal is input to the control unit 8 as required by the user. If no stop signal is received, this process is repeated at regular intervals.
[0047]
On the other hand, if the current charge amount (remaining amount of charge) <scheduled power consumption + α, the power of the secondary battery 2 is insufficient for the movement of the electric vehicle 1 on that day. 8 controls the AC / DC conversion unit 7 and the interconnection unit 6 to charge the secondary battery 2 with the electric power from the feeding power system (S206). The rapid mode may be selected according to the use schedule of the electric vehicle 1.
Further, if the current charge amount (remaining amount of charge) = scheduled use power amount + α, the power of the secondary battery 2 has necessary and sufficient power to be used for moving the electric vehicle 1 on that day. Therefore, the control unit 8 controls the interconnection unit 6 to supply power to the house 4 from a normal power feeding power system.
[0048]
The operation when the electric vehicle 1 is moved is as follows. The electric vehicle 1 is stored in a garage or a parking lot with the charge / discharge line 9 and the charge amount detection line 10 connected to each other. When the user uses the electric vehicle 1, the display unit (not shown) of the control unit 8 displays the remaining amount of charge of the secondary battery 2 of the electric vehicle 1 with respect to the driving distance scheduled for the day. Make sure that the amount is sufficient. Next, the charge / discharge line 9 and the charge amount detection line 10 are removed from the electric vehicle 1. After that, use one electric car.
When the use of the electric vehicle 1 is finished, the electric vehicle 1 is put in a predetermined garage or parking lot, and the charge / discharge line 9 and the charge amount detection line 10 are connected. When the connection is confirmed, control by the control unit 8 is started.
[0049]
With the above control, charging and discharging of the secondary battery 2 mounted on the electric vehicle 1 are automatically controlled. Then, the charging is performed in the time zone of the late-night power charge where the power charge of the power feeding power system is low, and when there is no plan to use it for driving the electric vehicle 1 in the daytime, it is used as the household power in the house 4 Can be used. That is, by using inexpensive late-night power stored in the electric vehicle 1 as household power when the vehicle is not used, the number of times the secondary battery 2 is used increases, and the substantially inexpensive electric vehicle 1 and the home are used. A power storage device can be provided.
In addition to the schedule input, the user is automatically discharged or charged only by connecting the charging / discharging line 9 which is a charging / discharging cord of the electric vehicle 1, so there is little operation and judgment is unnecessary. .
[0050]
In the present embodiment, each set value (charging time, reference remaining amount, calculation time interval of scheduled power usage, etc.) and input / change of the usage schedule of the electric vehicle 1 are performed from inside the house 4. It is possible. In that case, as shown in FIG. 6, the indoor control unit 12 is installed in the interior of the house, and is connected to the control unit 8. Information may be exchanged wirelessly. By doing so, it is possible to perform input / output, information confirmation, remaining charge amount confirmation, and the like for the control unit 8 from within the house 4.
[0051]
(Example 2)
Hereinafter, a second embodiment of the power control system according to the present invention will be described with reference to the accompanying drawings. In this embodiment, a power control system including a house connected to a power feeding power system and an electric vehicle having a secondary battery will be described. Other facilities having a secondary battery and other facilities connected to the power feeding power system The present invention can also be applied to a combination such as a moving body. Here, the feed power system is a power system that supplies power to ordinary households and facilities.
[0052]
1 and 2 are block diagrams showing the configuration of a second embodiment of the power control system of the present invention. Since it is the same as that of Example 1, description is abbreviate | omitted.
In the present invention, when the secondary battery 2 mounted as a power source of the electric vehicle 1 is used as a general household power source, an uninterruptible power source when a power failure occurs due to an abnormality in the power feeding power system or an emergency in the event of a disaster It differs from the first embodiment in that it is used as a power source. That is, in the state where power is supplied from the power feeding power system as the supplied power in the house 4, when an instantaneous power failure (instantaneous power failure) occurs due to a lightning strike or a power device trouble, the secondary battery 2 as battery power Is supplied to the power system of the house 4 and used as an uninterruptible power supply. Also, when power supply stops due to an earthquake or a local disaster, it is used as an emergency power supply source. Since a momentary power failure can be prevented, it is possible to stably use information devices in the home without worry. In addition, even if a disaster occurs, depending on the method of use, it can be provided with power for several days, which is an effective preparation against a disaster. That is, since the secondary battery 2 is not dedicated to the electric vehicle 1 but has another effective usage method, the effectiveness of the electric vehicle 1 is increased and the spread thereof can be promoted.
[0053]
Now, the configuration of the second embodiment of the power control system of the present invention will be described in detail.
Referring to FIG. 1, an electric vehicle 1 is an electric vehicle equipped with a secondary battery 2 as a power source. In this embodiment, it is a complete electric vehicle using only the secondary battery 2 as a power source. However, if the secondary battery 2 is mounted, it is not always necessary to be a complete electric vehicle. When not used, it is stored in the parking lot of the user's house 4. FIG. 2 is a diagram showing FIG. 1 in more detail.
[0054]
When the power of the power feeding system is supplied to the power system (distribution panel 5) of the house 4 when the power from the power feeding system is stopped by the instruction from the control unit 8, the interconnection unit 6 It is set to switch to the power of the secondary battery 2. When the power from the power supply system stops (momentary power outage due to abnormalities in the power supply system, temporary power outage, long-term power outage at the time of disaster, etc.), the power of the secondary battery 2 (via the AC / DC converter 7) quickly Is supplied to house 4. And the electric power supplied to the house 4 is returned to the electric power from a feeding electric power system as soon as the electric power from a feeding electric power system returns. Since other functions are the same as those in the first embodiment, the details are omitted.
[0055]
The control unit 8 confirms the remaining charge amount of the secondary battery 2 through the charge amount detection line 10. In addition, the AC / DC conversion unit 7 and the interconnection unit 6 are set so as to switch to the power of the secondary battery 2 when the power from the feeding power system stops. Then, each unit is monitored and controlled so that the switching operation of electric power that is harmonized as a whole can be performed.
Moreover, the setting when using the secondary battery 2 as an uninterruptible power supply or an emergency power supply is performed with respect to the control unit 8 by a simple terminal (not shown) with a display attached to the control box 3. However, a simple terminal with a display (not shown) can be connected to the inside of the house 4 by wireless or wired, and can be controlled from inside the house.
Since other functions are the same as those in the first embodiment, the details are omitted.
[0056]
Other configurations in FIG. 1 and FIG. 2 are the same as those in the first embodiment, and the details are omitted.
[0057]
The operation of the second embodiment of the power control system of the present invention will be described in detail with reference to FIG.
The user of the electric vehicle 1 uses the control unit 8 to replace the secondary battery 2 with an uninterruptible power source or an emergency power source (hereinafter also referred to as “auxiliary power source”) while being supplied with power from the power feeding system. Set to use as. In that case, the user specifies the amount of charge used for the auxiliary power source. For example, in the method of using only 5 kWh, the entire amount is used as an auxiliary power source at the time of a power failure, the remaining amount is used as an auxiliary power source except for the amount of power scheduled to be used in the schedule of the day. Do.
The setting can be changed at any time in the control unit 8. Further, in the control unit 8, the user can charge the secondary battery 2 in preparation for an emergency even during the daytime.
[0058]
When power from the power feeding system stops (momentary power outage due to abnormality in the power feeding power system, temporary power outage, long-term power outage during disasters, etc.), the interconnection unit 6 and the AC / DC conversion unit 7 are linked to each other quickly. The power of the secondary battery 2 (via the AC / DC converter 7) is supplied to the power system of the house 4. At the same time, the control unit 8 monitors the supplied power. And the interconnection | linkage part 7 will change the electric power supplied to the electric power system of the house 4 into the electric power of an electric power feeding system as soon as the electric power from a feeding electric power system returns.
[0059]
With the above operation, in the house 4, by using the secondary battery 2 of the electric vehicle 1 as a power source for auxiliary power, a momentary power failure (instantaneous power failure) due to a lightning strike or power equipment trouble can be avoided. And information devices such as Internet devices can be used stably and without concern. In addition, even if the power supply is stopped due to an earthquake or a local disaster, the power supply is not interrupted, and depending on the method of use, it can be maintained for several days. Can be improved drastically, making it an effective preparation for disasters. As described above, since the secondary battery is provided that is not dedicated to the electric vehicle 1 but provided with other effective use means, the effectiveness of the electric vehicle 1 is increased and the spread of the electric vehicle 1 can be promoted.
[0060]
Example 3
Hereinafter, a third embodiment of the power control system according to the present invention will be described with reference to the accompanying drawings. A power control system including a house connected to the power supply power system and an electric vehicle having a secondary battery will be described, but other facilities connected to the power supply power system and other mobile objects having a secondary battery Such combinations are also applicable. Here, the feed power system is a power system that supplies power to ordinary households and facilities.
[0061]
FIG. 7 is a block diagram showing the configuration of the third embodiment of the power control system of the present invention. It consists of a user 13 and a manufacturer 14. The user 13 includes the electric vehicle 1 having the secondary battery 2, the control box 3 having the interconnection unit 6, the AC / DC conversion unit 7, and the control unit 8, and the house 4 having the switchboard 5 and the indoor control unit 12. To do. The manufacturer 14 includes a remote monitoring system 15. And for the connection of electric power, the interconnection part 6 and the house 4 are connected by the feed line 11, and the AC / DC conversion part 7 and the secondary battery 2 are connected by the charge / discharge line 9, respectively. . Moreover, the control part 8 is connected with the secondary battery 2 by the charge amount detection line 10, and performs the control.
[0062]
In the present invention, regarding the secondary battery 2 mounted as a power source of the electric vehicle 1 of the user 13, the manufacturer 14 appropriately grasps the characteristics of the battery by remote monitoring and repairs, replaces, etc. the secondary battery 2 as necessary. Provide service advice. That is, first, when the user 13 performs charging, the remote monitoring system 15 of the manufacturer 14 acquires charge / discharge data that is a relationship between the charging (or discharging) power and the voltage between the terminals. Next, the data is compared with standard charge / discharge data (reference charge / discharge data) of the secondary battery held in advance by the remote monitoring system 15. Then, the performance of the secondary battery 2 is diagnosed, and advice such as repair and replacement of the secondary battery 2 is performed as necessary based on the diagnosis result. As described above, since the secondary battery 2 of the electric vehicle 1 can always be kept in a normal state, the secondary battery 2 that is the heart of the electric vehicle 1 can be used without anxiety. Therefore, the reliability of the electric vehicle is increased and the spread can be promoted.
[0063]
Now, the configuration of the third embodiment of the power control system of the present invention will be described in detail.
With reference to FIG. 7, a user 13 is a user of the electric vehicle 1 and is the same as that of the first embodiment.
When the secondary battery 2 is charged (or discharged), the controller 8 is charged (or discharged) capacity and inter-terminal voltage data (data on charging / discharging: charging / discharging data of the secondary battery 2 measured for each charging / discharging). The internal storage unit (not shown) is held (see FIG. 3). Then, the data is transmitted to the remote monitoring system 15 via the indoor control unit 12 in response to a request from the remote monitoring system 15 of the manufacturer 14. Since other functions are the same as those in the first embodiment, description thereof is omitted.
[0064]
In the house 4, the indoor control unit 12 includes information on the secondary battery 2 displayed on the display unit of the control unit 8 (the remaining amount of charge of the secondary battery 2, the usage schedule of the electric vehicle 1, the feeding power system) Etc.) are displayed. Further, a terminal for changing each set value (charge time, reference remaining amount, calculation time interval of scheduled power usage, etc.) related to each control performed by the control unit 8 and inputting / changing the use schedule of the electric vehicle 1. is there. In that case, as shown in FIG. 7, it may be connected to the control unit 8 by wire, or information may be exchanged wirelessly. Moreover, the remote monitoring system 15 of the manufacturer 14 and the data regarding the secondary battery 2 are transmitted / received, and the display based on the information is performed as needed. Transmission / reception is performed via a public line, the Internet, a dedicated line, or the like.
[0065]
The manufacturer 14 is a manufacturer of the secondary battery 2. By remote monitoring, the status of the secondary battery 2 of the user 13 is remotely monitored, and advice on how to use and information on failure and life are transmitted to the user 13 as necessary.
The remote monitoring system 15 belongs to the manufacturer 14 of the secondary battery 2 and is a server (not shown) for remotely monitoring the status of the secondary battery 2 of the user 13 and information on the secondary battery (normal and illustrated in FIG. 3). It consists of a database (not shown) that holds charge / discharge data in a defective state, information such as the relationship between charge / discharge data and life, and the relationship between charge / discharge data and failure. The secondary battery 2 does not have to be dedicated, and may be shared with other secondary batteries. Moreover, you may serve as other systems, such as control. The remote monitoring system 15 acquires charge / discharge data of the secondary battery 2 held by the control unit 8 via the indoor control unit 12. Then, the state of the secondary battery 2 is diagnosed from the data and information on the secondary battery held in the database. Then, based on the diagnosis result, advice and the like (advice on how to use the secondary battery, warning, information on the life and failure of the secondary battery 2, etc.) are transmitted to the indoor control unit 12 (and the control unit 8).
[0066]
The functions of the other components are the same as those in the first embodiment, and a description thereof will be omitted.
[0067]
The operation of the third embodiment of the power control system of the present invention will be described in detail with reference to FIGS.
The control unit 8 of the user 13 takes charge (or discharge) capacity and inter-terminal voltage data (charge / discharge data of the secondary battery 2) for each charge (or discharge) of the secondary battery 2, and stores the internal storage unit. (Not shown). FIG. 3 shows the relationship between the discharge capacity of the secondary battery 2 and the voltage between terminals. In the case of charging, the voltage starts from zero (the right end of the curve) and proceeds in the reverse direction, and reaches the maximum voltage (the left end of the curve) when fully charged. The capacity (Ah) discharged from the secondary battery 2 and the vertical axis represent the inter-terminal voltage of the secondary battery 2. As can be seen from this figure, if the battery is normal, the voltage between the terminals gradually decreases as the discharge capacity increases. However, if the battery is defective, it can be seen that as the discharge capacity increases, the inter-terminal voltage decreases quickly and becomes zero. That is, if charge / discharge data is taken, it can be determined whether the secondary battery 2 is normal or defective. The charge / discharge data of these secondary batteries 2 is held in the control unit 8.
[0068]
The remote monitoring system 15 of the manufacturer 14 acquires the aforementioned charge / discharge data from the control unit 8 via the indoor control unit 12 for each preset period. Then, the status of the secondary battery 2 is diagnosed by comparing the data with the data stored in the database of the remote monitoring system 14.
Specifically, the status of the secondary battery 2 is grasped by comparison with the following data. (A) Comparison of standard secondary battery charge / discharge data (normal state data and defective state data illustrated in FIG. 3), (b) full charge voltage (open voltage) Comparison with other battery physical property data such as absolute value, (c) Comparison with charge / discharge data held in advance and life relationship data, (d) Pre-charge / discharge data and failure relationship data And comparison. From these data comparisons, the deterioration part, the failure part, and the expected remaining life of the secondary battery 2 are determined.
[0069]
Then, advice and warning are given to the user 13 of the secondary battery 2 based on the obtained diagnosis result. The contents include information such as diagnosis results, failure status, expected remaining life, and improved usage. The user 13 examines the usage method and maintenance of the secondary battery 2 and the electric vehicle 1 based on the information, and requests the manufacturer 14 to repair, replace the battery, improve the usage method, etc. as necessary. The request can be made from the indoor control unit 12 to the remote monitoring system 15 of the manufacturer 14 by e-mail or the like. Since the manufacturer 14 already knows the status of the secondary battery 2, it can respond quickly.
[0070]
Since other operations of the power control system are the same as those in the first embodiment, a description thereof will be omitted.
[0071]
With the above operation, the secondary battery 2 of the electric vehicle 1 can always be kept in a normal state, so that the secondary battery 2 that is the heart of the electric vehicle 1 can be used without anxiety. I can do it. Therefore, the reliability of the electric vehicle is increased and the spread can be promoted.
[0072]
In the present embodiment, the remote monitoring system 15 acquires the information of the control unit 8 via the indoor control unit 12, but a line may be connected so that the information can be directly acquired.
[0073]
(Example 4)
Next, a fourth embodiment of the power control system according to the present invention will be described with reference to the accompanying drawings. In this embodiment, a power control system including a house connected to a power feeding power system and an electric vehicle having a secondary battery will be described. Other facilities having a secondary battery and other facilities connected to the power feeding power system The present invention can also be applied to a combination such as a moving body. Here, the feed power system is a power system that supplies power to ordinary households and facilities.
[0074]
FIG. 8 is a block diagram showing the configuration of the fourth embodiment of the power control system of the present invention. From the electric vehicle 1, the secondary battery 2, the control box 3, the house 4, the switchboard 5, and the spare secondary battery 16. It is configured. Referring to FIG. 9, the control box 3 includes an interconnection unit 6, an AC / DC conversion unit 7, and a control unit 8. And for the connection of electric power, between the interconnection part 6 and the house 4, it is the feed line 11, and between the AC / DC conversion part 7 and the secondary battery 2 is the charging / discharging line 9, and the AC / DC conversion part 7 and A spare charge / discharge line 17 is connected to the spare secondary battery 16. Further, the control unit 8 is connected to the secondary battery 2 through the charge amount detection line 10 and is connected to the backup secondary battery 16 through the preliminary charge amount detection line 18 to perform control thereof.
[0075]
In the present embodiment, the secondary battery 2 mounted as a power source of the electric vehicle 1 is used as a general household power source, while a small-capacity standby secondary battery 16 is prepared, The power source is different from the first embodiment in that it is used in combination with the secondary battery 2. That is, the secondary battery 2 and the standby secondary battery 16 are charged with inexpensive late-night power out of the power from the power feeding power system as the power feeding power. When the electric vehicle 1 is not used in the daytime, the power of the secondary battery 2 as battery power is supplied to the power system of the house 4 as household power. On the other hand, when the electric vehicle 1 is used, the power of the spare secondary battery 16 is supplied to the power system of the house 4 as household power. Since the spare secondary battery 16 is used as an auxiliary for the secondary battery 2, a small capacity is sufficient and it can be purchased at a low cost. And since the cheap late-night electric power accumulated in the secondary battery 2 and the standby secondary battery 16 can be used, it is possible to greatly reduce the electricity charge of a general household having the electric vehicle 1 and the standby secondary battery 16. It becomes. That is, since the secondary battery 2 is not dedicated to the electric vehicle 1 but has another effective usage method, the effectiveness of the electric vehicle 1 is increased and the spread thereof can be promoted.
[0076]
Now, the configuration of the fourth embodiment of the power control system of the present invention will be described in detail.
[0077]
FIG. 9 is a diagram showing FIG. 8 in more detail.
Referring to FIG. 9, the control box 3 is a control device that is connected to each of the feeding power system, the electric vehicle 1, the house 4, and the standby secondary battery 16 and controls the movement of power between them. is there. It is in the garage or parking lot where the electric vehicle 1 is located. The control is as follows: (1) The electric power from the power supply system is sent to the power system (distribution panel 5) of the house 4 for use in the house 4. (2) The secondary battery of the electric vehicle 1 supplies the power from the power supply system. 2 to charge the electric vehicle 1 to charge 2, 3 ▲ 1 ▼ + 2 ▼ simultaneously, 4, discharge the secondary battery 2 of the electric vehicle 1, send the power to the house 4, {Circle around (5)} The power from the power feeding power system is sent to the spare secondary battery 16 to charge the spare secondary battery 16, and {circle over (6)} (1) + {5} are simultaneously performed. {Circle around (7)} This relates to seven types of discharge of the spare secondary battery 16 and sending the power to the house 4.
[0078]
Details of the control box 3 will be described with reference to FIG.
The interconnection unit 6 relays the power movement related to the controls (1) to (7) described above under the control of the control unit 8 (described later). Among these, {circle over (1)} to {circle around (4)} are the same as those in the first embodiment, and the description thereof will be omitted. In the case of {circle around (5)}, the power from the power feeding power system is supplied only to the standby secondary battery 16 (to the AC / DC converter 7). In the case of {circle around (6)}, the power from the feeding power system is simultaneously supplied to the power system of the house 4 and the spare secondary battery 16. In the case of {circle around (7)}, the power from the feeding power system is stopped and the power of the spare secondary battery 16 is sent to the power system of the house 4.
In addition, when an abnormality occurs on one side of the feeding power system or the secondary battery 2 or the standby secondary battery 16 (abnormality of voltage, current, frequency), the abnormality is not propagated to the other side. Protective control to quickly disconnect both connections. Furthermore, it has a function of preventing surges from entering from the harmonic suppression filter and the feed power system.
[0079]
The AC / DC converter 7 has a voltage adjustment function and a frequency adjustment function. That is, when charging the secondary battery 2 and the standby secondary battery 16, the AC power sent from the feeding power system via the interconnection unit 6 is converted into DC power for charging. The set value of the DC voltage can be varied depending on the types of the secondary battery 2 and the standby secondary battery 16. On the other hand, when the secondary battery 2 and the standby secondary battery 16 are discharged (supplying power to the house 4), the DC power from the secondary battery 2 and the standby secondary battery 16 is changed to AC power (general household). Power, for example, 100V, 50Hz).
[0080]
The control unit 8 monitors and controls each unit so that a harmonious operation can be performed as a whole. In particular, with respect to the above (1) to (7), the interconnection unit 6, the AC / DC conversion unit 7, the secondary battery 2, and the standby secondary battery 16 are controlled. Since (1) to (4) are the same as those in the first embodiment, the description thereof is omitted.
In the case of {circle around (5)}, the charge amount of the spare secondary battery 16 is confirmed by the spare charge amount detection line 18. When the amount of charge is less than a preset value, and charging of the secondary battery 2 of the electric vehicle 1 is completed, and charging is performed from the feeding power system in the midnight power charge time zone The interconnection unit 6 and the AC / DC conversion unit 7 are controlled so as to perform the above.
In the case of {circle around (6)}, when there is normal power usage in the house 4 during the late-night electricity rate period and the charging of the secondary battery 2 of the electric vehicle 1 is completed, the control unit 8 The interconnection unit 6 is controlled so as to supply power to both the secondary batteries 16.
In the case of (7), since the power of the secondary battery 2 charged in the time zone of the midnight power charge cannot be used in the daytime time period when the electric vehicle 1 is used, instead of the spare secondary battery 16 Electric power is discharged and supplied to the power system of the house 4. For this purpose, the AC / DC converter 7 is controlled to discharge the standby secondary battery 16 to convert the power into AC power (commercial power, for example, 100 V, 50 Hz), to control the interconnection 6, The power from the AC / DC converter 7 is supplied to the power system of the house 4.
[0081]
The input of the control content to the control unit 8 can be controlled from a simple terminal (not shown) with a display attached to the control box 3 or from the indoor control panel 12 of the house 4.
In addition, data related to charge / discharge (charge / discharge data serving as a reference and charge / discharge data of the secondary battery 2 and the standby secondary battery 16 measured for each charge / discharge) necessary for knowing the remaining amount of charge is controlled. It is held in a storage unit (not shown) of the unit 8.
[0082]
The preliminary charge / discharge line 17 is an electric wire that exchanges electric power that connects the AC / DC converter 7 and the auxiliary secondary battery 16. The positive electrode and the negative electrode of the auxiliary secondary battery 16 are connected to the positive electrode and the negative electrode of the AC / DC converter 7, respectively.
[0083]
The reserve charge amount detection line 18 is a voltage line for measuring the voltage between the terminals of the reserve secondary battery 16 in order for the control unit 8 to detect the charge amount of the reserve secondary battery 16. The inter-terminal voltage detected by the preliminary charge amount detection line 18, the discharge capacity held in advance (the power capacity discharged from the fully-charged secondary battery 16), and the inter-terminal voltage of the standby secondary battery 16 (See FIG. 3 and Example 1), the control unit 8 detects the remaining amount of power of the standby secondary battery 16. Thereby, as necessary, the control unit 8 starts charging when the remaining amount of the spare secondary battery 16 becomes smaller than a preset power capacity value.
[0084]
In the house 4, the indoor control unit 12 provides information on the secondary battery 2 and the standby secondary battery 16 displayed on the display unit of the control unit 8 (remaining charge amounts of the secondary battery 2 and the standby secondary battery 16). Volume, usage schedule of the electric vehicle 1, relationship with the feeding power system, etc.) are displayed. Further, a terminal for changing each set value (charge time, reference remaining amount, calculation time interval of scheduled power usage, etc.) related to each control performed by the control unit 8 and inputting / changing the use schedule of the electric vehicle 1. is there. In that case, as shown in FIG. 9, it may be connected to the control unit 8 by wire, or information may be exchanged wirelessly.
[0085]
Other configurations in FIG. 8 and FIG. 9 are the same as those in the first embodiment, and the details are omitted.
[0086]
The operation of the fourth embodiment of the power control system of the present invention will be described in detail with reference to FIGS.
First, the charging operation of the spare secondary battery 16 will be described.
As a premise, when using the electric vehicle 1, the standby secondary battery 16 uses the inexpensive late-night power stored in the standby secondary battery 16 in advance to reduce the electricity charge of ordinary households. The purpose is to use. Therefore, the charging time is a time zone for late-night electricity charges. Moreover, since it is an auxiliary role of the secondary battery 2 of the electric vehicle 1, the charging of the secondary battery 2 is prioritized for charging in the time zone of the midnight power rate.
[0087]
First, the control unit 8 measures the voltage between the terminals of the secondary battery 2 with the charge amount detection line 10 in the time zone of the midnight power charge, and calculates the remaining charge amount of the secondary battery 2 from the voltage between the terminals. . And the charge amount of the secondary battery 2 is performed as needed.
When the secondary battery 2 is not charged, or after the charging is completed, the control unit 8 measures the inter-terminal voltage of the auxiliary secondary battery 16 by the auxiliary charge amount detection line 18 and determines the auxiliary secondary voltage from the inter-terminal voltage. The remaining amount of charge of the battery 16 is calculated.
When the amount of charge is smaller than a preset amount (a value set in advance by the user, full charge, 80% of full charge, etc.), the secondary charge is made by the reserve charge / discharge line 17 using the feed power system. The battery 16 is charged.
[0088]
At that time, when the power supply system is used in the house 4, the control unit 8 performs charging so as not to affect the use of power in the house 4. In addition, when the midnight power charge time period ends, charging ends at the same time. This is because the standby secondary battery 16 is charged in the late-night power charge time zone where the power charge is cheap (however, it is possible to change the charge time zone to another time depending on the user's intention). .
[0089]
When the amount of charge reaches a preset amount, or when the midnight power charge time period ends, the control unit 8 ends the charging.
[0090]
Next, the discharge operation will be described.
As a premise, the standby secondary battery 16 is discharged when power is used in a time zone in which the late-night power charge is not applied. At that time, priority is given to using the electric power stored in the secondary battery 2 of the electric vehicle 1. However, the spare secondary battery 16 is used when the electric vehicle 1 is used or when the electric power of the secondary battery 2 cannot be used due to the planned use of the electric vehicle 1.
[0091]
The control unit 8 first checks the charge amount of the secondary battery 2 by the charge / discharge detection line 10 in the time zone when the late-night power charge is not applied. At the same time, the schedule of the electric vehicle 1 is confirmed, and the amount of power that can be used in the house 4 out of the amount of charge of the secondary battery 2 is calculated. Further, the charge amount of the spare secondary battery 16 is confirmed by the spare charge amount detection line 18.
As a result, if there is an amount of power that can be used, that amount is used in the house 4. Then, when the secondary battery 16 has a sufficient amount of power when the amount of power is used up, the standby secondary battery 16 is switched.
If there is no power amount that can be used, if the spare secondary battery 16 has a sufficient amount of power, the power of the spare secondary battery 16 is used.
[0092]
However, as a method of using the standby secondary battery 16, it is not always set to use at the house 4, and it is preferable to switch to the secondary battery 2 or the standby secondary battery 16 in a time zone where the late-night power charge is not applied. It is also possible to display that the power charge is reduced by the indoor control unit 12 and finally determine the amount of power used based on the user's judgment.
[0093]
In that case, for example, the control unit 8 first confirms that it is a time zone in which the midnight power charge is not applied, then confirms the charge amount of the secondary battery 2 or the standby secondary battery 16, and then continues. Thus, the usable electric energy in the secondary battery 2 or the standby secondary battery 16 is calculated from the schedule of the electric vehicle 1 and displayed on the indoor control unit 12 based on the information. The display contents include a usable electric energy, a time display indicating how many hours can be used from the current electric power consumption, a future electric vehicle 1 schedule, and the like.
[0094]
By the above control, charging and discharging of the auxiliary secondary battery 16 are automatically controlled. Then, the charging is performed in the time zone of the late-night power charge where the power charge of the power feeding power system is low. When there is no electric vehicle 1 in the daytime, the power of the spare secondary battery 16 is used as the household power. It becomes possible to use in. And since it is the combined use with the secondary battery 2 of the electric vehicle 1, only a small capacity secondary battery is required, and the initial cost is fixed. That is, by using the inexpensive late-night power stored in the secondary battery 2 and the standby secondary battery 16, the number of uses of the secondary battery 2 increases, and the electric vehicle 1 and the household power storage device that are substantially inexpensive are used. Can be provided.
[0095]
Further, in the present embodiment, when the electric vehicle 1 is used urgently, the power of the spare secondary battery 16 can be used when charging is necessary. In that case, under the control of the control unit 8, the AC / DC conversion unit 7 converts the battery voltage of the standby secondary battery 16 into a voltage suitable for charging, and charges the secondary battery 2.
[0096]
In the first to third embodiments, the control box 3 is outside the house 4, but can be installed inside the house 4. In that case, either the indoor control unit 12 or the control unit 8 of the house 4 can be absorbed into the other, which leads to cost reduction.
[0097]
【The invention's effect】
According to the present invention, charging and discharging of a secondary battery of an electric vehicle are automatically controlled, and the secondary battery can be used not only as a power source for an electric vehicle, but also for storing electric power in a home, It becomes possible to lead to the spread of electric vehicles.
[0098]
In addition, according to the present invention, it is possible to reduce the electricity charge at home and use it as an auxiliary power source in the event of a power failure, and more effectively use the secondary battery of an electric vehicle.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of a power control system according to the present invention.
FIG. 2 is a detailed configuration diagram showing an embodiment of a power control system according to the present invention.
FIG. 3 is a graph showing the relationship between the discharge capacity of the secondary battery and the voltage between terminals in the present invention.
FIG. 4 is a process flow chart relating to charging of the secondary battery in the present invention.
FIG. 5 is a process flow diagram related to charging and discharging of a secondary battery in the present invention.
FIG. 6 is a configuration diagram showing another embodiment of the power control system according to the present invention.
FIG. 7 is a configuration diagram showing still another embodiment of the power control system according to the present invention.
FIG. 8 is a configuration diagram showing another embodiment of the power control system according to the present invention.
FIG. 9 is a detailed configuration diagram showing another embodiment of the power control system according to the present invention.
[Explanation of symbols]
1 Electric vehicle
2 Secondary battery
3 Control box
4 houses
5 Switchboard
6 Interconnection Department
7 AC / DC converter
8 Control unit
9 Charging / discharging line
10 Charge detection line
11 Power supply line
12 Indoor control unit
13 users
14 Manufacturer
15 Remote monitoring system
16 Spare secondary battery
17 Preliminary charge / discharge line
18 Precharge amount detection line

Claims (11)

  1. An electric vehicle having a secondary battery;
    The secondary battery of the electric vehicle is provided on the side of the feeding power system from the distribution board of the house in the garage or parking lot of the electric vehicle, connected to the power system of the house through the feeding power system and the distribution board. connection is possible, a control box for supplying the power system of the house and feeding power through the switchboard from the supplied power grid and
    Equipped with,
    The control box, when the electric vehicle is connected,
    If it exceeds the reference residual amount of charging amount is set in advance of the secondary battery, without supplying pre Symbol feeding power to the power system of the house, power system of the house the battery power of the secondary battery It supplied to the
    Power control system.
  2. The power control system according to claim 1,
    The control box, when the charge amount is smaller than the reference residual amount, while the previous SL cell power subjected Kyu in power system of the house, a row of charge the secondary battery with the prior SL supplied power U
    Power control system.
  3. The power control system according to claim 2, wherein
    The control box is
    When the electric vehicle is connected, the battery power is supplied to the power system of the house, or the interconnection unit that supplies the power supply power to the secondary battery and the power system of the house;
    When the electric vehicle is connected, if the charge amount exceeds the reference remaining amount, the battery power is supplied to the power system of the house, and if the charge amount is less than the reference remaining amount, the power supply is A control unit that controls the interconnection unit to charge the secondary battery using the supplied power while supplying the power system of the house;
    With
    Power control system.
  4. The power control system according to claim 3.
    Before SL control section, when the electric vehicle is connected to control the interconnection part to perform charge of the secondary battery using only prior Symbol power supplied to the midnight time zone power rate
    Power control system.
  5. The power control system according to claim 3 or 4,
    Before SL control section, when the electric vehicle is connected, before SL when the supply of the power supply power is stopped, controls the interconnection portion so to supply the pre-Symbol batteries power the power system of the house Do
    Power control system.
  6. The power control system according to any one of claims 3 to 5,
    The control part is,
    The charging / discharging data of the secondary battery is acquired during charging or discharging of the secondary battery, and the characteristics of the secondary battery are determined based on the reference charging / discharging data of the secondary battery and the charging / discharging data stored in advance. Control the interconnected part to diagnose
    Power control system.
  7. The power control system according to any one of claims 3 to 5,
    Further comprising a remote monitoring system that belong to the manufacturer,
    The electric vehicle and the control box belong to a user,
    The control section obtains the discharge data of the secondary battery during charging or discharging of the secondary battery, the transmitted charging and discharging data to the remote monitoring system,
    The remote monitoring system, on the basis of the charging and discharging data and reference charge and discharge data of the secondary battery in which the remote monitoring system is previously held, to diagnose the characteristics of the secondary battery, of the diagnosis to the control part power control system that sends the results.
  8. The power control system according to any one of claims 3 to 7,
    The houses, it provided an indoor control unit which performs input and output of information to the control box
    Power control system.
  9. The power control system according to any one of claims 3 to 8,
    Further comprising a pre-secondary batteries capable of storing electricity,
    Said control section, when the pre-Symbol spare rechargeable battery is connected, when the supply of the battery power is stopped, the spare battery power of the preliminary secondary battery for supplying the power system of the house Control the interconnection
    Power control system.
  10. A power control method using a power control system,
    Here, the power control system is
    An electric vehicle having a secondary battery;
    The secondary battery of the electric vehicle is provided on the side of the feeding power system from the distribution board of the house in the garage or parking lot of the electric vehicle, connected to the power system of the house through the feeding power system and the distribution board. And a control box for supplying the power supplied from the power supply power system to the power system of the house via the switchboard;
    Comprising
    When the electric vehicle is connected to the control box,
    (A) the control box is of less than the reference residual charge amount is set in advance of the secondary battery, while subjected supercharges battery power from the secondary battery to the power system of the house, the feeder Charging the secondary battery using electric power;
    (B) the control box is if the charge amount exceeds the reference residual amount, without supplying the feeding power to the power system of the house, supplying the battery power to the power system of the house When
    You include a
    Power control method.
  11. The power control method according to claim 10, wherein
    The electric vehicle and the control box belong to a user,
    The power control system is connected to a remote monitoring system belonging to the manufacturer;
    (C) the control box acquiring charge / discharge data of the secondary battery when charging or discharging the secondary battery;
    ; (D) control box and transmitting the charge and discharge data to said remote monitoring system,
    (E) the remote monitoring system diagnosing characteristics of the secondary battery based on the charge / discharge data and reference charge / discharge data of the secondary battery held in advance by the remote monitoring system;
    (F) the remote monitoring system transmitting the result of the diagnosis to the control box ;
    You include a
    Power control method.
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