JP2020096416A - Power supply system and power supply method - Google Patents

Power supply system and power supply method Download PDF

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JP2020096416A
JP2020096416A JP2018231172A JP2018231172A JP2020096416A JP 2020096416 A JP2020096416 A JP 2020096416A JP 2018231172 A JP2018231172 A JP 2018231172A JP 2018231172 A JP2018231172 A JP 2018231172A JP 2020096416 A JP2020096416 A JP 2020096416A
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power supply
storage battery
battery
supply system
load
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JP7084292B2 (en
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辻川　知伸
Tomonobu Tsujikawa
知伸 辻川
憲光 田中
Norimitsu Tanaka
憲光 田中
茂道 渡邉
Shigemichi Watanabe
茂道 渡邉
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NTT Facilities Inc
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    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • Y—GENERAL 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy 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]
    • Y—GENERAL 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

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  • Electric Propulsion And Braking For Vehicles (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

To be able to properly supply power to a commercial power source and the like while suppressing costs.SOLUTION: A power supply system comprises a backup battery 3 provided in a business office B and discharging to a load device 4 at a predetermined time, and an electric vehicle 2 equipped with a traveling battery 24 and capable of discharging to the load device 4 when returning to the business office B. Return information including time when the electric vehicle 2 returns to the business office B and remaining capacity of the traveling battery 24 at the time of return is acquired, and based on the return information, the electric vehicle 2 returns to the business office B and becomes ready to be discharged to the load device 4, thereby calculating dischargeable capacity that can be discharged from the backup battery 3 after securing necessary discharge capacity for the load device 4, and discharging the backup battery 3 only the dischargeable capacity when there is a power supply request from outside.SELECTED DRAWING: Figure 1

Description

この発明は、商用電源等からの電力供給が電力需要を下回るおそれがある場合に、供給を補いかつ需要を調整する電力供給システムおよび電力供給方法に関する。 The present invention relates to a power supply system and a power supply method for supplementing the supply and adjusting the demand when the power supply from a commercial power source or the like is likely to fall below the power demand.

近年、太陽光発電などの再生可能エネルギーが大量に導入されたことにより、いわゆるダックカーブ問題が生じている。すなわち、夕方４時頃から７時頃にかけて電力需要は増加するが、太陽光発電の発電量が減少するため、電力需要が供給量を超えてしまう、という問題がある。このような問題を解決するために、電力会社において揚水発電所や調整用火力発電所を増設したり、大容量蓄電池を設置して電力供給を補ったりしている。 In recent years, a large amount of renewable energy such as photovoltaic power generation has been introduced, causing a so-called duck curve problem. That is, although the power demand increases from around 4 pm to 7 pm in the evening, the power generation amount of the solar power generation decreases, so that there is a problem that the power demand exceeds the supply amount. In order to solve such a problem, an electric power company is adding a pumped storage power plant or a thermal power plant for adjustment, or installing a large-capacity storage battery to supplement the power supply.

一方、工場での消費電力が最大となる期間に、蓄電池を放電させて系統電力に補填する、という電力マネジメントシステムが知られている（例えば、特許文献１参照。）。このシステムは、消費電力が所定電力を越える可能性がある場合に、工場内設備に接続された電気自動車のバッテリと工場内設備内の定置蓄電池を放電させて、その電力を系統電力に補填するものである。 On the other hand, there is known a power management system that discharges a storage battery to compensate for system power during a period in which power consumption in a factory is maximum (see, for example, Patent Document 1). This system discharges the battery of the electric vehicle connected to the facility in the factory and the stationary storage battery in the facility when the power consumption may exceed the predetermined power, and supplements the power to the system power. It is a thing.

特開２０１２−１９６０２８号公報Japanese Patent Laid-Open No. 2012-196028

ところで、揚水発電所や調整用火力発電所を増設するには多大な費用を要するばかりでなく、調整用火力発電所は化石燃料を使用するため、温室効果ガスの増加を招く。また、大容量蓄電池を設置するにも多大な費用を要する。 By the way, adding a pumped storage power plant or a thermal power plant for adjustment requires a great amount of cost, and since the thermal power plant for adjustment uses fossil fuel, it causes an increase in greenhouse gas. In addition, installing a large-capacity storage battery requires a great deal of cost.

一方、特許文献１のシステムでは、系統電力を補填するという目的のためだけに、定置蓄電池を設置する必要があるため多大な費用を要する。さらに、工場に勤務する従業員が通勤に使用する電気自動車を放電対象とし、このような電気自動車は、勤務時間中常に駐車スペースに駐車されていて、いつでもどの電気自動車からも放電可能な状態となっている。しかしながら、一般の営業所やオフィスビルなどでは、いつどの電気自動車が駐車するかわからないため、本システムを適用することができない。 On the other hand, in the system of Patent Document 1, it is necessary to install the stationary storage battery only for the purpose of compensating for the system power, so that a large cost is required. In addition, electric vehicles used by employees working in factories for commuting are targeted for discharge, and such electric vehicles are always parked in a parking space during working hours and can be discharged from any electric vehicle at any time. Is becoming However, in general offices and office buildings, it is not possible to apply this system because it is not known when which electric vehicle will be parked.

そこでこの発明は、費用を抑えた上で適正に、商用電源等からの電力供給が電力需要を下回る場合に、供給を補いかつ需要を調整する電力供給システムおよび電力供給方法を提供することを目的とする。 Therefore, an object of the present invention is to provide an electric power supply system and an electric power supply method that appropriately suppress the cost and appropriately supplement the supply when the electric power supply from a commercial power source or the like is lower than the electric power demand. And

上記目的を達成するために請求項１に記載の発明は、基地に設けられ、所定時に負荷に対して放電する定置用蓄電池と、移動するための走行用蓄電池を備え、前記基地に帰着した際に前記走行用蓄電池から前記負荷に放電可能な移動体と、前記移動体が前記基地に帰着する時刻と、帰着時の前記走行用蓄電池の残容量と、を含む帰着情報を取得する帰着情報取得手段と、前記帰着情報に基づいて、前記移動体が前記基地に帰着して前記負荷に放電可能な状態になることで、前記負荷に対して必要な放電容量を確保した上で前記定置用蓄電池から放電可能な放電可能容量を算出し、外部からの給電要求があった場合に、前記定置用蓄電池を前記放電可能容量だけ放電させる放電制御手段と、を備えることを特徴とする電力供給システムである。 In order to achieve the above object, the invention according to claim 1 is provided with a stationary storage battery that is installed in a base and discharges against a load at a predetermined time, and a traveling storage battery for moving, and when returning to the base. In addition, return information acquisition for obtaining return information including a moving body capable of discharging from the running storage battery to the load, a time when the moving body returns to the base, and a remaining capacity of the running storage battery at the time of returning And a stationary storage battery after securing the necessary discharge capacity for the load by allowing the mobile unit to return to the base and become a state capable of discharging to the load based on the return information. And a discharge control means for discharging the stationary storage battery by the dischargeable capacity when there is a request for power supply from the outside, and a power supply system characterized in that is there.

この発明によれば、移動体が基地に帰着する時刻と帰着時の蓄電池残容量に基づいて、走行用蓄電池から負荷に放電可能になることで、定置用蓄電池から放電可能な放電可能容量が算出される。そして、外部からの給電要求があった場合に、定置用蓄電池が放電可能容量だけ放電される。 According to this invention, the dischargeable capacity that can be discharged from the stationary storage battery is calculated by enabling the traveling storage battery to discharge the load based on the time when the mobile body returns to the base and the remaining storage battery capacity at the time of the return. To be done. Then, when there is a power supply request from the outside, the stationary storage battery is discharged by the dischargeable capacity.

請求項２に記載の発明は、請求項１に記載の電力供給システムにおいて、前記帰着情報取得手段は、前記移動体の位置情報に基づいて前記帰着情報を予測して取得する、ことを特徴とする。 The invention according to claim 2 is the power supply system according to claim 1, wherein the return information acquisition unit predicts and acquires the return information based on position information of the moving body. To do.

請求項３に記載の発明は、請求項１または２に記載の電力供給システムにおいて、前記放電制御手段は、所定の優先順位に基づいて前記定置用蓄電池および前記走行用蓄電池を放電させる、ことを特徴とする。 According to a third aspect of the present invention, in the power supply system according to the first or second aspect, the discharge control means discharges the stationary storage battery and the traveling storage battery based on a predetermined priority order. Characterize.

請求項４に記載の発明は、請求項１から３に記載の電力供給システムにおいて、前記負荷の電力需要を調整する需要調整手段を備える、ことを特徴とする。 The invention described in claim 4 is the power supply system according to any one of claims 1 to 3, further comprising a demand adjustment means for adjusting the power demand of the load.

請求項５に記載の発明は、請求項１から４に記載の電力供給システムにおいて、前記放電制御手段は、複数の前記基地の定置用蓄電池と移動体を制御対象とする、ことを特徴とする。 According to a fifth aspect of the present invention, in the electric power supply system according to the first to fourth aspects, the discharge control unit controls a plurality of stationary storage batteries of the bases and a mobile object. ..

請求項６に記載の発明は、所定時に負荷に対して放電する定置用蓄電池が基地に設けられ、移動するための走行用蓄電池を備えた移動体が前記基地に帰着した際に、前記走行用蓄電池から前記負荷に放電可能な状態において、前記移動体が前記基地に帰着する時刻と、帰着時の前記走行用蓄電池の残容量と、を含む帰着情報を取得し、前記帰着情報に基づいて、前記移動体が前記基地に帰着して前記負荷に放電可能な状態になることで、前記負荷に対して必要な放電容量を確保した上で前記定置用蓄電池から放電可能な放電可能容量を算出し、外部からの給電要求があった場合に、前記定置用蓄電池を前記放電可能容量だけ放電させる、ことを特徴とする電力供給方法である。 According to a sixth aspect of the present invention, a stationary storage battery that discharges against a load at a predetermined time is provided in the base, and when the moving body equipped with the traveling storage battery returns to the base, the running storage battery is used. In a state in which the load can be discharged from a storage battery, the time when the mobile body returns to the base, and the remaining capacity of the traveling storage battery at the time of return, obtains return information, based on the return information, When the mobile body returns to the base and becomes a state in which the load can be discharged, a dischargeable capacity that can be discharged from the stationary storage battery is calculated after securing a necessary discharge capacity for the load. In the power supply method, the stationary storage battery is discharged by the dischargeable capacity when an external power supply request is made.

請求項１および請求項６に記載の発明によれば、移動体が基地に帰着すれば負荷に必要な放電容量を確保できることを予測した上で、定置用蓄電池から放電可能容量だけ放電される。このため、所定時における負荷への電力供給に影響を与えることなく、外部からの給電要求に応じて適正に電力を供給することが可能となる。しかも、定置用蓄電池は負荷に対して放電、電力供給するために設けられたものであり、電力需要を補うために新たに設けるものではない。つまり、既存の定置用蓄電池を電力需要の補助に流用するため、費用を低く抑えることができる。 According to the first and sixth aspects of the present invention, it is predicted that the mobile body can secure the discharge capacity necessary for the load if it returns to the base, and then the stationary storage battery is discharged by the dischargeable capacity. Therefore, it is possible to appropriately supply power in response to a power supply request from the outside without affecting the power supply to the load at a predetermined time. Moreover, the stationary storage battery is provided for discharging and supplying power to the load, and is not newly provided to supplement the power demand. That is, since the existing stationary storage battery is diverted to assist power demand, the cost can be kept low.

また、移動体が基地に帰着する時刻と帰着時の蓄電池残容量を取得して、定置用蓄電池からの放電可能容量を算出するため、いつどの移動体が基地に帰着するか、走行用蓄電池の残容量がどのくらいなのか、定まっていない一般の営業所やオフィスビルなどにおいても、本発明を適用することが可能となる。従って、基地に帰着する不特定多数の移動体を利用して、適正に電力を供給することが可能となる。 In addition, in order to calculate the dischargeable capacity from the stationary storage battery by obtaining the time when the mobile body returns to the base and the remaining battery capacity at the time of return, it is possible to determine when the mobile body will return to the base, The present invention can be applied to general business offices and office buildings where the remaining capacity is not fixed. Therefore, it becomes possible to properly supply electric power by utilizing an unspecified number of moving bodies that return to the base.

請求項２に記載の発明によれば、移動体の位置情報に基づいて帰着時刻と帰着時の蓄電池残容量（帰着情報）を予測、取得するため、帰着情報を直接取得しなくても帰着前に、位置情報で帰着情報を取得、知得することができる。 According to the invention described in claim 2, since the return time and the remaining battery storage capacity (return information) at the time of the return are predicted and acquired based on the position information of the moving body, the return information is not directly acquired before the return. In addition, the return information can be acquired and known from the position information.

請求項３に記載の発明によれば、所定の優先順位に基づいて定置用蓄電池および走行用蓄電池を放電させるため、適正な蓄電池を適正なタイミングで放電させることができ、他への電力供給や移動体の使用への影響を抑えることができる。 According to the invention described in claim 3, since the stationary storage battery and the traveling storage battery are discharged based on a predetermined priority order, it is possible to discharge an appropriate storage battery at an appropriate timing, and to supply power to others. The influence on the use of the moving body can be suppressed.

請求項４に記載の発明によれば、需要調整手段で負荷の電力需要を調整することで、定置用蓄電池からの放電可能容量を調整して、外部の節電要求に柔軟に対応することが可能となる。 According to the invention described in claim 4, by adjusting the power demand of the load by the demand adjusting means, the dischargeable capacity from the stationary storage battery can be adjusted to flexibly respond to the external power saving request. Becomes

請求項５に記載の発明によれば、複数の基地の定置用蓄電池と移動体を制御対象（放電対象）とするため、より多くの定置用蓄電池と走行用蓄電池を利用して、外部の給電要求に柔軟かつ適正に対応することが可能となる。 According to the invention described in claim 5, since the stationary storage batteries and the moving bodies of the plurality of bases are set as control targets (discharging targets), more stationary storage batteries and traveling storage batteries are used to supply external power. It becomes possible to respond flexibly and appropriately to the request.

この発明の実施の形態１に係る電力供給システムを示す概略構成図である。It is a schematic block diagram which shows the electric power supply system which concerns on Embodiment 1 of this invention. 図１の電力供給システムにおける電気自動車の帰着情報に係るブロック図である。It is a block diagram which concerns on the return information of the electric vehicle in the electric power supply system of FIG. 図１の電力供給システムにおける事業所の設備構成を示す図である。It is a figure which shows the equipment structure of the business office in the electric power supply system of FIG. 図３の設備構成における制御装置のブロック図である。It is a block diagram of a control device in the equipment configuration of FIG. 図４の制御装置の放電量算出部による算出例を示す図である。It is a figure which shows the example of calculation by the discharge amount calculation part of the control apparatus of FIG. 図１の電力供給システムによる電力供給方法を示すタイミングチャートである。3 is a timing chart showing a power supply method by the power supply system of FIG. 1. この発明の実施の形態２に係る電力供給システムを示す概略構成図である。It is a schematic block diagram which shows the electric power supply system which concerns on Embodiment 2 of this invention. この発明の他の適用例を示す概略構成図である。It is a schematic block diagram which shows the other application example of this invention.

以下、この発明を図示の実施の形態に基づいて説明する。 Hereinafter, the present invention will be described based on the illustrated embodiments.

（実施の形態１）
図１〜図６は、この実施の形態を示し、図１は、この実施の形態に係る電力供給システム１を示す概略構成図である。この電力供給システム１は、商用電源１００等からの電力供給が電力需要を下回るおそれがある場合に、供給を補うシステムであり、この実施の形態では、商用電源（系統電力）１００を補う場合について説明する。この電力供給システム１は、主として、複数の電気自動車（移動体）２と、事業所（基地）Ｂに設けられたバックアップ用バッテリ（定置用蓄電池）３と制御装置５とを備える。 (Embodiment 1)
1 to 6 show this embodiment, and FIG. 1 is a schematic configuration diagram showing a power supply system 1 according to this embodiment. This power supply system 1 is a system that supplements the power supply from the commercial power supply 100 or the like when there is a possibility that the power supply will fall below the power demand. In the present embodiment, the case where the commercial power supply (system power) 100 is supplemented explain. The power supply system 1 mainly includes a plurality of electric vehicles (moving bodies) 2, a backup battery (stationary storage battery) 3 provided in a business establishment (base) B, and a control device 5.

電気自動車２は、移動するための走行用バッテリ（走行用蓄電池）２４を備え、事業所Ｂに所属し、通常、朝に事業所Ｂを出発して夕方に事業所Ｂに帰着・帰社する。この電気自動車２は、図２に示すように、通信部２１と、ＧＰＳ部（帰着情報取得手段）２２と、バッテリコントローラ（帰着情報取得手段）２３と、これらを制御などする中央制御部２０とを備える。 The electric vehicle 2 includes a traveling battery (traveling storage battery) 24 for moving, belongs to the business office B, and usually leaves the business office B in the morning and returns to or returns to the business office B in the evening. As shown in FIG. 2, the electric vehicle 2 includes a communication unit 21, a GPS unit (return information acquisition unit) 22, a battery controller (return information acquisition unit) 23, and a central control unit 20 for controlling them. Equipped with.

通信部２１は、通信網ＮＷを介して制御装置５などと通信するためのインターフェイスである。ＧＰＳ部２２は、ＧＰＳ衛星から時刻信号電波を受信して、電気自動車２の現在位置の緯度と経緯を演算、検出するものである。バッテリコントローラ２３は、走行用バッテリ２４の充放電を制御などするコントローラであり、走行用バッテリ２４の残容量を検知する機能を備えている。ここで、残容量を検知する方法はどのようなものでもよく、例えば、走行距離に基づいて消費電力を算出して残容量を演算したり、放電カーブに基づいて残容量を演算したりしてもよい。また、走行用バッテリ２４には充放電ポート２５が接続され、この充放電ポート２５を後述する充放電器７に接続することで走行用バッテリ２４が充放電される。 The communication unit 21 is an interface for communicating with the control device 5 and the like via the communication network NW. The GPS unit 22 receives time signal radio waves from GPS satellites, and calculates and detects the latitude and longitude of the current position of the electric vehicle 2. The battery controller 23 is a controller that controls charging and discharging of the traveling battery 24, and has a function of detecting the remaining capacity of the traveling battery 24. Here, any method may be used to detect the remaining capacity, for example, by calculating the power consumption based on the traveling distance to calculate the remaining capacity, or calculating the remaining capacity based on the discharge curve. Good. A charging/discharging port 25 is connected to the traveling battery 24, and the traveling battery 24 is charged/discharged by connecting the charging/discharging port 25 to a charger/discharger 7 described later.

このような電気自動車２は、事業所Ｂに帰着した際に充放電ポート２５を充放電器７に接続することで、走行用バッテリ２４が充電可能になるとともに、走行用バッテリ２４から負荷装置（負荷）４および商用電源１００に放電可能な状態となる。また、ＧＰＳ部２２で検出された現在位置（移動体の位置情報）と現在時刻と、バッテリコントローラ２３で検知された走行用バッテリ２４の残容量と、電気自動車２の識別情報とを含むＥＶ情報を定期的に、および制御装置５からの要求に応じて随時、制御装置５に送信するようになっている。 In such an electric vehicle 2, by connecting the charging/discharging port 25 to the charging/discharging device 7 when returning to the business office B, the traveling battery 24 can be charged and the traveling battery 24 loads the load device ( The load 4 and the commercial power supply 100 are ready to be discharged. Also, EV information including the current position (positional information of the moving body) and current time detected by the GPS unit 22, the remaining capacity of the running battery 24 detected by the battery controller 23, and the identification information of the electric vehicle 2. Is transmitted to the control device 5 periodically and at any time in response to a request from the control device 5.

バックアップ用バッテリ３は、停電時（所定時）に通信機器などの負荷装置４に対して放電して電力供給するバックアップ電源であり、図３に示すように、セル（単位電池・二次電池）３１が複数（例えば、１６８セル）直列に接続された組電池として構成されている。各セル３１は、どのような電池であってもよいが、リチウムイオン二次電池や制御弁式鉛蓄電池などが挙げられる。また、この実施の形態では、バックアップ用バッテリ３の満充電時の容量（ＡｋＷｈ）は、負荷装置４に対して必要な放電容量・電力量と同値であるとする。 The backup battery 3 is a backup power source that supplies electric power by discharging the load device 4 such as a communication device at the time of power failure (predetermined time), and as shown in FIG. 3, cells (unit batteries/secondary batteries). 31 is configured as an assembled battery in which a plurality of (for example, 168 cells) are connected in series. Each cell 31 may be any battery, and examples thereof include a lithium-ion secondary battery and a control valve type lead storage battery. Further, in this embodiment, the fully charged capacity (AkWh) of the backup battery 3 is assumed to be the same value as the discharge capacity/electric energy required for the load device 4.

このバックアップ用バッテリ３は、整流装置６に接続され、商用電源１００からの電力が整流装置６で直流に変換されてバックアップ用バッテリ３に供給され、バックアップ用バッテリ３が充電されるようになっている。さらに、整流装置６には負荷装置４が接続され、同様にして直流電力が負荷装置４に供給され、商用電源１００が停電すると、バックアップ用バッテリ３から負荷装置４に直流電力が供給されるようになっている。 The backup battery 3 is connected to the rectifying device 6, and the power from the commercial power source 100 is converted into direct current by the rectifying device 6 and supplied to the backup battery 3 so that the backup battery 3 is charged. There is. Further, the load device 4 is connected to the rectifying device 6, DC power is supplied to the load device 4 in the same manner, and when the commercial power supply 100 fails, DC power is supplied from the backup battery 3 to the load device 4. It has become.

さらに、この実施の形態では、整流装置６を双方向電力変換装置にしてもよく、この場合は、商用電源１００側にも電力を流す（逆潮流させる）機能を備え、後述するようにしてバックアップ用バッテリ３が放電した際に、バックアップ用バッテリ３からの直流電力を交流に変換して、商用電源１００に給電するようになっている。ここで、図１中の符号１０１は、商用電源１００の電線配を示し、符号１０２は、電線配１０１と事業所Ｂ側とを接続する引込線を示す。 Further, in this embodiment, the rectifying device 6 may be a bidirectional power converter, and in this case, the commercial power supply 100 side is provided with a function of causing power to flow (reverse power flow), and the backup is performed as described later. When the backup battery 3 is discharged, the DC power from the backup battery 3 is converted into AC power to supply power to the commercial power supply 100. Here, reference numeral 101 in FIG. 1 indicates an electric wire arrangement of the commercial power supply 100, and reference numeral 102 indicates a service wire connecting the electric wire arrangement 101 and the office B side.

制御装置５は、整流装置６や走行用バッテリ２４を制御などする装置であり、整流装置６が接続されているとともに、走行用バッテリ２４を充放電するための充放電器７が複数接続されている。ここで、充放電器７は、電気自動車２を駐車する駐車場に設置され、充電および放電に適した電圧に変換する機能を備えている。この制御装置５は、図４に示すように、主として、通信部５１と、制御部５２と、放電量算出部（帰着情報取得手段、放電制御手段）５３と、メモリ５４と、優先順位割出部５５と、需要調整部（需要調整手段）５６と、これらを制御などする中央処理部（放電制御手段）５７とを備える。 The control device 5 is a device that controls the rectifying device 6 and the traveling battery 24, and is connected to the rectifying device 6 and a plurality of chargers/dischargers 7 for charging and discharging the traveling battery 24. There is. Here, the charger/discharger 7 is installed in a parking lot for parking the electric vehicle 2 and has a function of converting the voltage into a voltage suitable for charging and discharging. As shown in FIG. 4, the control device 5 mainly includes a communication unit 51, a control unit 52, a discharge amount calculation unit (reduction information acquisition unit, discharge control unit) 53, a memory 54, and a priority order index. A unit 55, a demand adjustment unit (demand adjustment unit) 56, and a central processing unit (discharge control unit) 57 that controls these units are provided.

通信部５１は、通信網ＮＷを介して各電気自動車２や商用電源１００側（電力会社側）などと通信するためのインターフェイスであり、商用電源１００側からデマンドレスポンス指令（外部からの給電要求）を受信可能となっている。制御部５２は、整流装置６や各充放電器７を制御するコントローラであり、制御内容については後述する。 The communication unit 51 is an interface for communicating with each electric vehicle 2 or the commercial power supply 100 side (electric power company side) via the communication network NW, and the commercial power supply 100 side requests a demand response (power supply request from the outside). Are available for reception. The control unit 52 is a controller that controls the rectifying device 6 and each charger/discharger 7, and the control content will be described later.

放電量算出部５３は、帰着情報を演算、取得し、放電可能容量を算出するタスク・プログラムである。まず、帰着情報とは、電気自動車２が事業所Ｂに帰着する時刻・日時と、帰着時の走行用バッテリ２４の残容量と、を含む情報であり、電気自動車２から受信したＥＶ情報に基づいて演算、予測する。すなわち、電気自動車２の現在位置に基づいて、その現在位置から事業所Ｂに直接帰着した場合に事業所Ｂに到着する時刻を割り出す。また、走行用バッテリ２４の現在（ＥＶ情報受信時）の残容量と、現在位置から事業所Ｂまで走行した場合の消費電力とに基づいて、帰着時の走行用バッテリ２４の残容量を演算する。 The discharge amount calculation unit 53 is a task program that calculates and acquires the return information and calculates the dischargeable capacity. First, the return information is information including the time and date when the electric vehicle 2 returns to the business office B and the remaining capacity of the traveling battery 24 at the time of return, and is based on the EV information received from the electric vehicle 2. Calculate and predict That is, based on the current position of the electric vehicle 2, the time to arrive at the business office B when directly returning to the business office B from the current position is calculated. Further, the remaining capacity of the traveling battery 24 at the time of returning is calculated based on the present (when EV information is received) remaining capacity of the traveling battery 24 and the power consumption when traveling from the current position to the office B. ..

次に、放電可能容量とは、電気自動車２が事業所Ｂに帰着して負荷装置４に放電可能な状態になることで、負荷装置４に対して必要な放電容量を確保した上でバックアップ用バッテリ３から放電可能な放電量である。すなわち、走行用バッテリ２４から負荷装置４に放電可能な状態になれば、バックアップ用バッテリ３を所定量放電しても負荷装置４に必要な放電容量を確保することができ、この所定量が放電可能容量である。 Next, the dischargeable capacity means that the electric vehicle 2 is returned to the business office B and is ready to be discharged to the load device 4, thereby ensuring a necessary discharge capacity for the load device 4 and for backup. This is the discharge amount that can be discharged from the battery 3. In other words, if the battery 24 for traveling can be discharged to the load device 4, the discharge capacity necessary for the load device 4 can be secured even if the backup battery 3 is discharged by a predetermined amount. It is possible capacity.

このような放電可能容量を各電気自動車２の帰着情報に基づいて算出する。具体的には、各電気自動車２の帰着時の走行用バッテリ２４の残容量を、帰着時刻ごとに加算して算出する。例えば、図５に示すように、バックアップ用バッテリ３が満充電されて容量がＡｋＷｈの状態において、第１の電気自動車２１が３０分後に帰着し帰着時の走行用バッテリ２４の残容量がＸｋＷｈの場合、３０分後の総容量が（Ａ＋Ｘ）ｋＷｈで、現時点から３０分間での放電可能容量をＸｋＷｈと算出する。 Such a dischargeable capacity is calculated based on the return information of each electric vehicle 2. Specifically, the remaining capacity of the traveling battery 24 at the time of returning each electric vehicle 2 is calculated by adding it at each returning time. For example, as shown in FIG. 5, in the state of the capacitor is charged backup battery 3 Mitsuru is AkWh, the remaining capacity of the driving battery 24 at the time of return the first electric car 2 1 resulted after 30 minutes XkWh In this case, the total capacity after 30 minutes is (A+X)kWh, and the dischargeable capacity within 30 minutes from the present time is calculated as XkWh.

ただし、３０分間において停電が発生して、バックアップ用バッテリ３から負荷装置４に給電する場合に、第１の電気自動車２１が帰着するまで負荷装置４に給電できる場合であって、給電できない場合には放電可能容量はゼロとなる。例えば、バックアップ用バッテリ３および負荷装置４の仕様バックアップ時間が８時間の場合、放電可能容量はＸｋＷｈとなる。一方、仕様バックアップ時間が１５分の場合、３０分後に第１の電気自動車２１が帰着しても負荷装置４に１５分間連続給電できないため、放電可能容量はゼロとなり、第１の電気自動車２１の帰着時刻が近づいた際に（例えば、１０分後）、放電可能容量がプラスとなる。また、バックアップ用バッテリ３の容量ＡｋＷｈは、周囲温度や経年劣化を考慮して算出する。 However, a power failure occurs at 30 minutes, when the power supply from the backup battery 3 to the load device 4, in a case where the first electric car 2 1 can supply power to the load device 4 until the result, when it is not possible to feed The dischargeable capacity is zero. For example, when the specification backup time of the backup battery 3 and the load device 4 is 8 hours, the dischargeable capacity is XkWh. On the other hand, if the specification backup time is 15 minutes for the first electric car 2 1 after 30 minutes can not be continuously powered for 15 minutes to a load device 4 also resulted, the discharge capacity is zero, the first electric car 2 When the return time of 1 approaches (for example, after 10 minutes), the dischargeable capacity becomes positive. Further, the capacity AkWh of the backup battery 3 is calculated in consideration of the ambient temperature and aging deterioration.

同様に、第２の電気自動車２２が４５分後に帰着し帰着時の走行用バッテリ２４の残容量がＹｋＷｈの場合、４５分後の総容量が（Ａ＋Ｘ＋Ｙ）ｋＷｈで、現時点から４５分間での放電可能容量を（Ｘ＋Ｙ）ｋＷｈと算出し、第３の電気自動車２３が６０分後に帰着し帰着時の走行用バッテリ２４の残容量がＺｋＷｈの場合、６０分後の総容量が（Ａ＋Ｘ＋Ｙ＋Ｚ）ｋＷｈで、現時点から６０分間での放電可能容量を（Ｘ＋Ｙ＋Ｚ）ｋＷｈと算出する。 Similarly, the remaining capacity of the driving battery 24 at the time of return second electric car 2 2 resulted after 45 minutes if the YkWh, in a total volume after 45 minutes (A + X + Y) kWh , at 45 minutes from the present time the discharge capacity (X + Y) is calculated as kWh, when the remaining capacity of the third electric car 2 3 driving battery 24 at the time of return resulted after 60 minutes of ZkWh, total capacity after 60 minutes (a + X + Y + Z ) In kWh, the dischargeable capacity within 60 minutes from the present time is calculated as (X+Y+Z) kWh.

メモリ５４は、各種情報を記憶する記憶部であり、放電量算出部５３で算出した放電可能容量や、後述する優先順位割出部５５で割り出した優先順位、各電気自動車２に関する情報（自動車情報）などを記憶する。ここで、自動車情報には、各電気自動車２の識別情報や使用目的（緊急時対応車など）、主たる使用者、使用スケジュール、走行用バッテリ２４の経年劣化などを含む。 The memory 54 is a storage unit that stores various kinds of information, and includes the dischargeable capacity calculated by the discharge amount calculation unit 53, the priority order calculated by the priority order calculation unit 55 described later, information about each electric vehicle 2 (vehicle information ) Etc. are memorized. Here, the vehicle information includes identification information of each electric vehicle 2, a purpose of use (emergency response vehicle, etc.), a main user, a use schedule, deterioration of the running battery 24 over time, and the like.

優先順位割出部５５は、バックアップ用バッテリ３および走行用バッテリ２４を放電させる場合の優先順位を割り出すタスク・プログラムである。すなわち、バックアップ用バッテリ３と帰着した走行用バッテリ２４のなかから、バックアップ用バッテリ３が給電する負荷装置４の重要性や各電気自動車２の自動車情報などに基づいて、重要度が低く放電させてもよいバッテリ３、２４から順に放電順位を決める。例えば、負荷装置４の重要性が高い場合には、バックアップ用バッテリ３の優先順位を高く（放電順位を下位に）設定し、電気自動車２の使用スケジュールに空きがある場合には、この走行用バッテリ２４の優先順位を低く（放電順位を上位に）設定し、電気自動車２が緊急時対応車の場合には、この走行用バッテリ２４の優先順位を高く（放電順位を下位に）設定する。 The priority level indexing unit 55 is a task program that determines a priority level when the backup battery 3 and the traveling battery 24 are discharged. In other words, the backup battery 3 and the reduced travel battery 24 are discharged with low importance based on the importance of the load device 4 to which the backup battery 3 supplies power, the vehicle information of each electric vehicle 2, and the like. The discharge order is determined in order from the good batteries 3 and 24. For example, when the load device 4 has a high importance, the backup battery 3 is set to a high priority (the discharge rank is set to a low order), and when the use schedule of the electric vehicle 2 is available, When the electric vehicle 2 is an emergency vehicle, the priority of the battery 24 for traveling is set high (the discharge order is low) when the priority of the battery 24 is set low (the discharge order is high).

需要調整部５６は、負荷装置４の電力需要を調整するものである。すなわち、負荷装置４の消費電力を軽減させるものであり、負荷装置４を構成する負荷要素のなかから予め設定された負荷要素の動作、稼働を停止したり軽減したりすることで、消費電力を軽減させる。この需要調整部５６は、外部からの指令を受けて、あるいは、商用電源１００への給電量を確保するには負荷装置４の電力需要を下げる必要があると判断した場合に自動的に、起動される。 The demand adjustment unit 56 adjusts the power demand of the load device 4. That is, the power consumption of the load device 4 is reduced, and the power consumption is reduced by stopping or reducing the operation and operation of a load element that is preset from among the load elements that configure the load device 4. Reduce. The demand adjustment unit 56 is automatically started when receiving a command from the outside or when it is determined that the power demand of the load device 4 needs to be reduced in order to secure the amount of power supplied to the commercial power supply 100. To be done.

次に、このような構成の電力供給システム１の作用および、電力供給システム１による電力供給方法などについて、図６のタイミングチャートに基づいて説明する。 Next, the operation of the power supply system 1 having such a configuration and the power supply method by the power supply system 1 will be described with reference to the timing chart of FIG.

まず、平常時においては、バックアップ用バッテリ３と充放電器７が整流装置６に接続され、バックアップ用バッテリ３と充放電器７に接続された走行用バッテリ２４が充電されている。このような状態で、外出中の各電気自動車２から制御装置５にＥＶ情報が定期的に送信されると（ステップＳ１）、放電量算出部５３が起動されて放電可能容量が逐次算出される（ステップＳ２）。 First, in normal times, the backup battery 3 and the charger/discharger 7 are connected to the rectifying device 6, and the traveling battery 24 connected to the backup battery 3 and the charger/discharger 7 is charged. In such a state, when EV information is periodically transmitted from each electric vehicle 2 that is out to the control device 5 (step S1), the discharge amount calculation unit 53 is activated and the dischargeable capacity is sequentially calculated. (Step S2).

次に、商用電源１００側から制御装置５にデマンドレスポンス指令（外部からの給電要求）があると（ステップＳ３）、放電可能容量がゼロより大きい場合に、制御装置５の制御部５２によって整流装置６の出力電圧がバックアップ用バッテリ３の開放電圧（フロート充電電圧）よりも下げられる（ステップＳ４）。これにより、バックアップ用バッテリ３から負荷装置４に放電可能容量だけ放電、給電される（ステップＳ５）。このとき、整流装置６が双方向電力変換装置の場合には、商用電源１００にも放電、給電される。 Next, when there is a demand response command (power supply request from the outside) to the control device 5 from the commercial power supply 100 side (step S3), if the dischargeable capacity is larger than zero, the control unit 52 of the control device 5 causes the rectifying device to operate. The output voltage of 6 is lowered below the open circuit voltage (float charging voltage) of the backup battery 3 (step S4). As a result, the backup battery 3 discharges and supplies power to the load device 4 by the dischargeable capacity (step S5). At this time, when the rectifier 6 is a bidirectional power converter, the commercial power supply 100 is also discharged and supplied with power.

ここで、負荷装置４のみに給電されるか、商用電源１００のみに給電されるか、あるいは負荷装置４と商用電源１００の双方に給電されるかは、負荷装置４と商用電源１００の容量に依存する。また、デマンドレスポンス指令を受信した際に、各電気自動車２に帰着指令を送信し、これを受けて各電気自動車２が制御装置５に最新のＥＶ情報を送信したり、事業所Ｂに帰着したりするようにしてもよい。 Whether the power is supplied only to the load device 4, only the commercial power supply 100, or both the load device 4 and the commercial power supply 100 is determined by the capacity of the load device 4 and the commercial power supply 100. Dependent. In addition, when a demand response command is received, a reduction command is transmitted to each electric vehicle 2, and in response to this, each electric vehicle 2 transmits the latest EV information to the control device 5 or returns to the business office B. You may choose to do so.

その後、各電気自動車２が帰着して充放電器７に接続さると（ステップＳ６）、優先順位割出部５５が起動されてバックアップ用バッテリ３および走行用バッテリ２４を放電させる優先順位が割り出される（ステップＳ７）。 After that, when each electric vehicle 2 returns and is connected to the charger/discharger 7 (step S6), the priority level indexing section 55 is activated to determine the priority level for discharging the backup battery 3 and the traveling battery 24. (Step S7).

そして、商用電源１００の停電が発生すると（ステップＳ８）、優先順位割出部５５で割り出された優先順位に基づいて制御部５２によって各充放電器７等が制御され（ステップＳ９）、バックアップ用バッテリ３と走行用バッテリ２４から負荷装置４に給電される（ステップＳ１０）。具体的には、まず、整流装置６の出力電圧がゼロになることで、無瞬断でバックアップ用バッテリ３から放電、給電される。整流装置6が双方向電力変換装置の場合には、商用電源１００側に電力が流れないように制御される。続いて、バックアップ用バッテリ３の優先順位が低い場合（放電順位が上位の場合）には、そのままバックアップ用バッテリ３からの放電が継続される。 Then, when a power failure of the commercial power supply 100 occurs (step S8), the control unit 52 controls each charger/discharger 7 and the like based on the priority order calculated by the priority order calculation unit 55 (step S9), and backs up. Power is supplied to the load device 4 from the driving battery 3 and the traveling battery 24 (step S10). Specifically, first, when the output voltage of the rectifying device 6 becomes zero, the backup battery 3 is discharged and power is supplied without interruption. When the rectifier 6 is a bidirectional power converter, the rectifier 6 is controlled so that power does not flow to the commercial power source 100 side. Subsequently, when the backup battery 3 has a low priority (when the discharge rank is high), the discharge from the backup battery 3 is continued as it is.

一方、いずれかの充放電器７の優先順位が低い場合には、その充放電器７が放電される。このとき、バックアップ用バッテリ３の電圧、容量に応じて充放電器７からの放電電流（電力）を調整し、バックアップ用バッテリ３からの放電を抑制して走行用バッテリ２４から放電させる。 On the other hand, when one of the chargers/dischargers 7 has a low priority, the charger/discharger 7 is discharged. At this time, the discharge current (electric power) from the charger/discharger 7 is adjusted according to the voltage and the capacity of the backup battery 3, and the discharge from the backup battery 3 is suppressed and discharged from the traveling battery 24.

このような制御を優先順位に従って行い、バックアップ用バッテリ３と走行用バッテリ２４を順次放電させる。また、負荷装置４の電力需要を調整する必要がある場合には、需要調整部５６によって負荷装置４の消費電力が軽減される。 Such control is performed according to the priority order, and the backup battery 3 and the traveling battery 24 are sequentially discharged. In addition, when it is necessary to adjust the power demand of the load device 4, the demand adjustment unit 56 reduces the power consumption of the load device 4.

ここで、デマンドレスポンス指令を受信した場合に、バックアップ用バッテリ３のみから放電、給電する場合について説明したが、電気自動車２の帰着後に優先順位に従って走行用バッテリ２４から給電するようにしてもよい。例えば、電気自動車２の帰着前はバックアップ用バッテリ３から給電し、電気自動車２の帰着後は、優先順位に従ってバックアップ用バッテリ３または走行用バッテリ２４から給電してもよい。 Here, when the demand response command is received, the case of discharging and supplying power from only the backup battery 3 has been described, but power may be supplied from the traveling battery 24 according to the priority order after the electric vehicle 2 has returned. For example, power may be supplied from the backup battery 3 before the return of the electric vehicle 2, and power may be supplied from the backup battery 3 or the traveling battery 24 according to the priority order after the return of the electric vehicle 2.

以上のように、この電力供給システム１および電力供給方法によれば、電気自動車２が事業所Ｂに帰着すれば負荷装置４に必要な放電容量を確保できることを予測した上で、バックアップ用バッテリ３から放電可能容量だけ放電される。このため、負荷装置４への電力供給に影響を与えることなく、商用電源１００側からの給電要求に応じて適正に電力を供給することが可能となる。つまり、バックアップ用バッテリ３から負荷装置４や商用電源１００に給電することで、商用電源１００からの電力供給を補うことが可能となる。 As described above, according to the power supply system 1 and the power supply method, it is predicted that if the electric vehicle 2 returns to the business office B, the discharge capacity required for the load device 4 can be secured, and then the backup battery 3 Is discharged from the dischargeable capacity. For this reason, it becomes possible to appropriately supply power in response to a power supply request from the commercial power supply 100 side without affecting the power supply to the load device 4. That is, by supplying power from the backup battery 3 to the load device 4 and the commercial power supply 100, it becomes possible to supplement the power supply from the commercial power supply 100.

しかも、バックアップ用バッテリ３は負荷装置４に対して放電、電力供給するためにバックアップ電源として設けられたものであり、商用電源１００からの電力供給を補うために新たに設けたものではない。つまり、既存のバックアップ用バッテリ３を電力需要の補助に流用するため、費用を低く抑えることができる。 Moreover, the backup battery 3 is provided as a backup power source for discharging and supplying power to the load device 4, and is not newly provided to supplement the power supply from the commercial power source 100. That is, since the existing backup battery 3 is diverted to assist power demand, the cost can be kept low.

また、電気自動車２が事業所Ｂに帰着する時刻と帰着時の蓄電池残容量を取得して、バックアップ用バッテリ３からの放電可能容量を算出するため、いつどの電気自動車２が事業所Ｂに帰着するか、走行用バッテリ２４の残容量がどのくらいなのか、定まっていない一般の営業所やオフィスビルなどにおいても、本システム１を適用することが可能となる。従って、事業所Ｂに帰着する不特定多数の電気自動車２を利用して、電力を適正に供給することが可能となる。 In addition, the time at which the electric vehicle 2 returns to the office B and the remaining storage battery capacity at the time of the return are acquired, and the dischargeable capacity from the backup battery 3 is calculated. In other words, the present system 1 can be applied to a general business office, office building, or the like in which the remaining capacity of the battery 24 for traveling is not fixed. Therefore, it becomes possible to properly supply electric power by using an unspecified number of electric vehicles 2 that return to the business office B.

しかも、電気自動車２の位置情報に基づいて帰着時刻と帰着時の蓄電池残容量（帰着情報）を予測、取得するため、帰着情報を直接取得しなくても帰着前に、位置情報で帰着情報を取得、知得することができる。 Moreover, since the return time and the remaining battery charge (return information) at the time of return are predicted and acquired based on the position information of the electric vehicle 2, the return information can be obtained by the position information before the return without directly acquiring the return information. You can get it.

また、所定の優先順位に基づいてバックアップ用バッテリ３および走行用バッテリ２４を放電させるため、適正なバッテリ３、２４を適正なタイミングで放電させることができ、他への電力供給や電気自動車２の使用への影響を抑えることができる。一方、需要調整部５６で負荷装置４の電力需要・消費電力を調整・軽減することで、バックアップ用バッテリ３からの放電可能容量を調整・アップして、商用電源１００の給電要求に柔軟に対応することが可能となる。 Further, since the backup battery 3 and the traveling battery 24 are discharged based on a predetermined priority order, it is possible to discharge the proper batteries 3 and 24 at proper timing, and to supply electric power to others and the electric vehicle 2. The influence on use can be suppressed. On the other hand, the demand adjustment unit 56 adjusts/reduces the power demand/power consumption of the load device 4, thereby adjusting/upgrading the dischargeable capacity from the backup battery 3 and flexibly responding to the power supply request of the commercial power supply 100. It becomes possible to do.

（実施の形態２）
図７は、この実施の形態に係る電力供給システム１を示す概略構成図である。この実施の形態では、複数の事業所Ｂのバックアップ用バッテリ３と電気自動車２を制御対象・放電対象とする点で、実施の形態１と構成が異なり、実施の形態１と同等の構成については、同一符号を付することでその説明を省略する。この実施の形態では、２つの事業所Ｂ１、Ｂ２を対象とする場合について説明する。 (Embodiment 2)
FIG. 7 is a schematic configuration diagram showing the power supply system 1 according to this embodiment. In this embodiment, the configuration is different from that of the first embodiment in that the backup batteries 3 and the electric vehicles 2 of a plurality of business offices B are control targets and discharge targets. , And the description thereof will be omitted. In this embodiment, a case where two business establishments B 1 and B 2 are targeted will be described.

第１の事業所Ｂ１と第２の事業所Ｂ２の設備構成は同等であり、第１の事業所Ｂ１の制御装置５が、両事業所Ｂ１、Ｂ２のバックアップ用バッテリ３と電気自動車２を制御する。このとき、第１の事業所Ｂ１の放電量算出部５３で両事業所Ｂ１、Ｂ２に帰着する各電気自動車２の帰着情報や、両事業所Ｂ１、Ｂ２のバックアップ用バッテリ３の放電可能容量を演算、算出する。また、第１の事業所Ｂ１の優先順位割出部５５で両事業所Ｂ１、Ｂ２のバッテリ３、２４の優先順位・放電順位を割り出し、この優先順位に従ってバッテリ３、２４を放電させる。 The first office B 1 and the second system configuration of the office B 2 are equivalent, the first control device 5 of the business office B 1, a backup battery 3 of both plants B 1, B 2 Control the electric vehicle 2. At this time, the first discharge amount calculating unit 53 in both offices B 1 offices B 1, B 2 result information and the electric vehicle 2, resulting in both sites B 1, B 2 Backup Battery 3 The dischargeable capacity of is calculated and calculated. Further, indexing priorities and discharging order of the first priority determination section 55 in both offices B 1 offices B 1, B 2 of the battery 3,24 discharges the battery 3, 24 according to this priority ..

例えば、商用電源１００側から制御装置５にデマンドレスポンス指令があると、優先順位が低い（放電順位が上位の）事業所Ｂ１、Ｂ２のバックアップ用バッテリ３を放電可能容量だけ最初に放電させ、その後、他方の事業所Ｂ２、Ｂ１のバックアップ用バッテリ３を放電可能容量だけ放電させる。また、電気自動車２が事業所Ｂ１、Ｂ２に帰着後に、優先順位に従って走行用バッテリ２４から商用電源１００に放電、給電する。 For example, when there is a demand response command from the commercial power supply 100 side to the control device 5, the backup batteries 3 of the offices B 1 and B 2 with low priority (higher discharge order) are first discharged by the dischargeable capacity. After that, the backup batteries 3 of the other offices B 2 and B 1 are discharged by the dischargeable capacity. In addition, after the electric vehicle 2 returns to the business offices B 1 and B 2 , the traveling battery 24 discharges and supplies power to the commercial power supply 100 in accordance with the priority order.

このように、この実施の形態によれば、複数の事業所Ｂ１、Ｂ２のバックアップ用バッテリ３と電気自動車２を制御対象・放電対象とするため、より多くのバックアップ用バッテリ３と走行用バッテリ２４を利用して、商用電源１００側からの給電要求に柔軟かつ適正に対応することが可能となる。 Thus, according to this embodiment, for a plurality of offices B 1, backup battery 3 of B 2 and the electric vehicle 2 and the control target and discharging target, traveling with more backup battery 3 By using the battery 24, it becomes possible to flexibly and appropriately respond to the power supply request from the commercial power supply 100 side.

以上、この発明の実施の形態について説明したが、具体的な構成は、上記の実施の形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があっても、この発明に含まれる。例えば、上記の実施の形態では、制御装置５で帰着情報を演算、予測しているが、各電気自動車２で帰着情報を演算して制御装置５に送信するようにしてもよい。また、事業所Ｂに所属する電気自動車２を放電対象にしているが、一般の電気自動車を放電対象にして連系してもよい。さらに、移動体が電気自動車２の場合について説明したが、走行用蓄電池を備えれば船舶や自走ロボットなどであってもよい。 Although the embodiments of the present invention have been described above, the specific configuration is not limited to the above-mentioned embodiments, and even if there is a design change or the like within the scope not departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the control device 5 calculates and predicts the return information, but each electric vehicle 2 may calculate the return information and transmit it to the control device 5. Further, although the electric vehicle 2 belonging to the business office B is targeted for discharging, a general electric vehicle may be targeted for discharging to be interconnected. Further, although the case where the moving body is the electric vehicle 2 has been described, it may be a ship or a self-propelled robot as long as it has a storage battery for traveling.

また、実施の形態１、２では、充放電器７が直流連系されている場合について説明したが、図８に示すように、交流連系されている場合でも適用することができる。すなわち、整流装置６と並列に充放電器７を商用電源１００に接続し、商用電源１００からの交流電力を充放電器７で直流に変換して走行用バッテリ２４に給電し、走行用バッテリ２４からの直流電力を充放電器７で交流に変換して、商用電源１００や整流装置６に給電してもよい。この際、ＡＣ／ＤＣコンバータ８１と大容量蓄電池８２を備え負荷装置４の容量よりも大容量のＵＰＳ８を、充放電器７と並列に設ける。 Further, in the first and second embodiments, the case where the charger/discharger 7 is DC-connected has been described, but as shown in FIG. 8, the present invention can be applied even when AC-connected. That is, the charger/discharger 7 is connected in parallel to the rectifier 6 to the commercial power supply 100, the AC power from the commercial power supply 100 is converted into the direct current by the charger/discharger 7, and the traveling battery 24 is supplied with power. Alternatively, the DC power from the converter may be converted into AC by the charger/discharger 7 to supply power to the commercial power supply 100 or the rectifier 6. At this time, the UPS 8 having the AC/DC converter 81 and the large-capacity storage battery 82 and having a larger capacity than the capacity of the load device 4 is provided in parallel with the charger/discharger 7.

１ 電力供給システム
２ 電気自動車（移動体）
２１ 通信部
２２ ＧＰＳ部（帰着情報取得手段）
２３ バッテリコントローラ（帰着情報取得手段）
２４ 走行用バッテリ（走行用蓄電池）
３ バックアップ用バッテリ（定置用蓄電池）
３１ セル
４ 負荷装置（負荷）
５ 制御装置
５１ 通信部
５２ スイッチ
５３ 放電量算出部（帰着情報取得手段、放電制御手段）
５４ メモリ
５５ 優先順位割出部
５６ 需要調整部（需要調整手段）
５７ 中央処理部（放電制御手段）
６ 整流装置
７ 充放電器
８ ＵＰＳ
１００ 商用電源（系統電力、外部）
Ｂ 事業所（基地）
ＮＷ 通信網
1 Power supply system 2 Electric vehicle (moving body)
21 communication unit 22 GPS unit (return information acquisition means)
23 Battery controller (return information acquisition means)
24 Running battery (running storage battery)
3 Backup battery (stationary storage battery)
31 cell 4 load device (load)
5 Control Device 51 Communication Unit 52 Switch 53 Discharge Amount Calculation Unit (Reduction Information Acquisition Means, Discharge Control Means)
54 Memory 55 Priority Indexing Unit 56 Demand Adjustment Unit (Demand Adjustment Unit)
57 Central processing unit (discharge control means)
6 Rectifier 7 Charger 8 UPS
100 Commercial power supply (system power, external)
B establishment (base)
NW communication network

Claims (6)

基地に設けられ、所定時に負荷に対して放電する定置用蓄電池と、
移動するための走行用蓄電池を備え、前記基地に帰着した際に前記走行用蓄電池から前記負荷に放電可能な移動体と、
前記移動体が前記基地に帰着する時刻と、帰着時の前記走行用蓄電池の残容量と、を含む帰着情報を取得する帰着情報取得手段と、
前記帰着情報に基づいて、前記移動体が前記基地に帰着して前記負荷に放電可能な状態になることで、前記負荷に対して必要な放電容量を確保した上で前記定置用蓄電池から放電可能な放電可能容量を算出し、外部からの給電要求があった場合に、前記定置用蓄電池を前記放電可能容量だけ放電させる放電制御手段と、
を備えることを特徴とする電力供給システム。 A stationary storage battery that is provided at the base and discharges against a load at a predetermined time,
A traveling storage battery for moving, a movable body capable of discharging from the traveling storage battery to the load when returning to the base;
Return information acquisition means for acquiring return information including the time when the mobile body returns to the base, and the remaining capacity of the traveling storage battery at the time of return,
On the basis of the return information, the mobile body can return to the base and become a state capable of discharging to the load, so that the stationary storage battery can be discharged after securing a necessary discharge capacity for the load. And a discharge control means for discharging the stationary storage battery only by the dischargeable capacity when there is a power supply request from the outside,
An electric power supply system comprising: 前記帰着情報取得手段は、前記移動体の位置情報に基づいて前記帰着情報を予測して取得する、
ことを特徴とする請求項１に記載の電力供給システム。 The return information acquisition unit predicts and acquires the return information based on the position information of the moving body,
The power supply system according to claim 1, wherein: 前記放電制御手段は、所定の優先順位に基づいて前記定置用蓄電池および前記走行用蓄電池を放電させる、
ことを特徴とする請求項１または２のいずれか１項に記載の電力供給システム。 The discharge control means discharges the stationary storage battery and the traveling storage battery based on a predetermined priority order,
The power supply system according to claim 1, wherein the power supply system is a power supply system. 前記負荷の電力需要を調整する需要調整手段を備える、
ことを特徴とする請求項１から３のいずれか１項に記載の電力供給システム。 A demand adjustment means for adjusting the power demand of the load,
The power supply system according to claim 1, wherein the power supply system is a power supply system. 前記放電制御手段は、複数の前記基地の定置用蓄電池と移動体を制御対象とする、
ことを特徴とする請求項１から４のいずれか１項に記載の電力供給システム。 The discharge control means controls a plurality of stationary storage batteries of the base and a mobile body,
The power supply system according to claim 1, wherein the power supply system is a power supply system. 所定時に負荷に対して放電する定置用蓄電池が基地に設けられ、
移動するための走行用蓄電池を備えた移動体が前記基地に帰着した際に、前記走行用蓄電池から前記負荷に放電可能な状態において、
前記移動体が前記基地に帰着する時刻と、帰着時の前記走行用蓄電池の残容量と、を含む帰着情報を取得し、
前記帰着情報に基づいて、前記移動体が前記基地に帰着して前記負荷に放電可能な状態になることで、前記負荷に対して必要な放電容量を確保した上で前記定置用蓄電池から放電可能な放電可能容量を算出し、外部からの給電要求があった場合に、前記定置用蓄電池を前記放電可能容量だけ放電させる、
ことを特徴とする電力供給方法。
A stationary storage battery that discharges against a load at a predetermined time is provided at the base,
When a moving body including a traveling storage battery for moving is returned to the base, in a state in which the traveling storage battery can discharge the load,
Obtaining return information including the time when the mobile body returns to the base and the remaining capacity of the traveling storage battery at the time of return,
On the basis of the return information, the mobile body can return to the base and become a state capable of discharging to the load, so that the stationary storage battery can be discharged after securing a necessary discharge capacity for the load. The dischargeable capacity, when the power supply request from the outside, the stationary storage battery is discharged by the dischargeable capacity,
A power supply method characterized by the above.
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