JP2005071704A - Electricity storage system - Google Patents

Electricity storage system Download PDF

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JP2005071704A
JP2005071704A JP2003297481A JP2003297481A JP2005071704A JP 2005071704 A JP2005071704 A JP 2005071704A JP 2003297481 A JP2003297481 A JP 2003297481A JP 2003297481 A JP2003297481 A JP 2003297481A JP 2005071704 A JP2005071704 A JP 2005071704A
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emergency
storage battery
regular
electricity
electrolyte
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JP3877714B2 (en
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Naoto Sumi
直人 隅
Kosuke Nishihata
康介 西端
Nobuyuki Tokuda
信幸 徳田
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Kansai Electric Power Co Inc
Takenaka Komuten Co Ltd
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Kansai Electric Power Co Inc
Takenaka Komuten Co Ltd
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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
    • Y02E60/30—Hydrogen technology
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electricity storage system which always secures a power of required amount, and even if supply of power from a power supply system stops, can immediately discharge the required electricity to the power demand system. <P>SOLUTION: This is the electricity storage system in which a regular use storage battery A which charges up the power from a power supply system C and discharges to the power demand system D is installed between the power supply system C and the power demand system D. An emergency storage battery B which charges up the power from the power supply system C and discharges to the power demand system D when the supply of power from the power supply system stops is installed, and the emergency storage battery B is heated by the heat generated by the regular use storage battery A through heat exchangers 11a, 11b provided between the emergency storage battery B and the regular use storage battery A. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、電気供給系（例えば、電力会社からの供給電力）からの電気を充電して電気需要系（例えば、各種の電気機器類）に放電する常用蓄電池が、前記電気供給系と電気需要系との間に設けられている蓄電システムに関する。   The present invention relates to a storage battery for charging electricity from an electric supply system (for example, electric power supplied from an electric power company) and discharging it to an electric demand system (for example, various electric devices). The present invention relates to a power storage system provided with a system.

このような蓄電システムは、例えば、ビルやマンションなどに設置して、昼と夜との電力需要の差や季節による電力需要の差などを平準化するためなどに使用されるもので、従来、常用蓄電池としてレドックスフロー電池を使用し、電気供給系からの電気の供給が停止した際にも、そのレドックスフロー電池からなる常用蓄電池から電気需要系に放電するように構成したものが知られている（例えば、特許文献１参照）。   Such a power storage system is installed in, for example, a building or a condominium, and is used for leveling the difference in power demand between day and night or the difference in power demand depending on the season. What is configured to use a redox flow battery as a regular storage battery and discharge from a regular storage battery consisting of the redox flow battery to an electrical demand system even when the supply of electricity from the electricity supply system is stopped is known. (For example, refer to Patent Document 1).

特開２００３−７３２６号公報（図１〜図３）JP 2003-7326 A (FIGS. 1 to 3)

しかし、上記文献に記載の蓄電システムでは、電力負荷を平準化するための蓄電池が、電気供給系からの電気の供給が停止した際の電力確保をも兼用するものであるから、実際に電力の供給が停止した際、必ずしも十分な電力が蓄電されているとは限らず、この点に改良の余地があった。   However, in the power storage system described in the above document, the storage battery for leveling the power load also serves to secure power when the supply of electricity from the electricity supply system is stopped. When the supply is stopped, sufficient electric power is not always stored, and there is room for improvement in this respect.

本発明は、このような従来の問題点に着目したもので、その目的は、常に必要量の電力を確保して、たとえ電気供給系からの電気の供給が停止しても、電気需要系に対して直ちに必要な電気を放電することのできる蓄電システムを提供することにある。   The present invention pays attention to such a conventional problem, and its purpose is to always secure a necessary amount of electric power, even if the supply of electricity from the electric supply system is stopped, to the electric demand system. An object of the present invention is to provide a power storage system that can immediately discharge necessary electricity.

請求項１の発明の特徴構成は、電気供給系からの電気を充電して電気需要系に放電する常用蓄電池が、前記電気供給系と電気需要系との間に設けられている蓄電システムであって、前記電気供給系からの電気を充電して電気供給系からの電気の供給が停止した際に前記電気需要系に放電する非常用蓄電池が設けられ、前記非常用蓄電池が、その非常用蓄電池と前記常用蓄電池との間に設けられた熱交換器を介して前記常用蓄電池からの発生熱により加熱されるように構成されているところにある。   The characteristic configuration of the invention of claim 1 is an electricity storage system in which a regular storage battery that charges electricity from an electricity supply system and discharges it to the electricity demand system is provided between the electricity supply system and the electricity demand system. An emergency storage battery is provided that charges the electricity from the electricity supply system and discharges to the electricity demand system when the supply of electricity from the electricity supply system stops, and the emergency storage battery is the emergency storage battery And the regular storage battery are heated by heat generated from the regular storage battery via a heat exchanger provided between the regular storage battery and the regular storage battery.

請求項１の発明の特徴構成によれば、電気供給系からの電気を充電して電気需要系に放電する常用蓄電池に加えて、電気供給系からの電気を充電して電気供給系からの電気の供給が停止した際に電気需要系に放電する非常用蓄電池が設けられているので、その非常用蓄電池によって非常時に必要な量の電力を常に確保しておくことが可能となる。
さらに、非常時における電力の確保に関しては、例えば、自家発電機を設置することも可能であるが、自家発電機では、可燃性の燃料などを常備しておく必要があり、また、比較的煩雑な定期点検も欠かすことができず、実際の使用に際して煩わしいことも多い。
その点、蓄電池では、燃料の常備が不要で、自家発電機ほど煩雑な点検を必要とせず、メンテナンスが容易となる利点がある。 According to the characteristic configuration of the invention of claim 1, in addition to the regular storage battery that charges the electricity from the electricity supply system and discharges it to the electricity demand system, the electricity from the electricity supply system is charged and the electricity from the electricity supply system is discharged. Since the emergency storage battery that discharges to the electricity demand system when the supply of the battery is stopped is provided, the emergency storage battery can always secure a necessary amount of power in an emergency.
Furthermore, with regard to securing electric power in an emergency, for example, it is possible to install a private power generator. However, the private power generator must always have combustible fuel and the like, and is relatively complicated. Regular periodic inspection is also indispensable, and it is often troublesome in actual use.
In that respect, the storage battery does not require fuel preparation, and does not require as much trouble as an in-house generator, and has the advantage that maintenance is easy.

その反面、蓄電池は温度によって電池性能が左右されるので、非常用蓄電池を常に所定の温度範囲内に維持しておく必要があり、そのためには、例えば、ヒータなどの加熱装置が不可欠となる。
しかし、本発明の蓄電システムでは、非常用蓄電池が、その非常用蓄電池と常用蓄電池との間に設けられた熱交換器を介して常用蓄電池からの発生熱により加熱されるように構成されているので、常用蓄電池の発生熱を有効に利用することで、殊更、非常用蓄電池用の加熱装置などを必要とすることなく、非常用蓄電池を常に所定の温度範囲内に維持することができ、必要な場合には直ちに、所定の電池性能で電気需要系に放電することが可能となる。 On the other hand, since the battery performance depends on the temperature of the storage battery, it is necessary to always maintain the emergency storage battery within a predetermined temperature range. For this purpose, for example, a heating device such as a heater is indispensable.
However, in the power storage system of the present invention, the emergency storage battery is configured to be heated by the heat generated from the normal storage battery via a heat exchanger provided between the emergency storage battery and the normal storage battery. Therefore, by effectively using the heat generated by the regular storage battery, the emergency storage battery can always be maintained within the predetermined temperature range without requiring a heating device for the emergency storage battery. In such a case, it is possible to immediately discharge the electricity demand system with a predetermined battery performance.

請求項２の発明の特徴構成は、前記常用蓄電池が、充電と放電を行う常用セルと常用電解液を貯蔵する常用タンクを備え、その常用電解液を前記常用セルと常用タンクの間で循環させるレドックスフロー電池であるところにある。   According to a second aspect of the present invention, the regular storage battery includes a regular cell for charging and discharging and a regular tank for storing a regular electrolyte, and the regular electrolyte is circulated between the regular cell and the regular tank. There is a redox flow battery.

請求項２の発明の特徴構成によれば、常用蓄電池が、充電と放電を行う常用セルと常用電解液を貯蔵する常用タンクを備え、その常用電解液を常用セルと常用タンクの間で循環させるレドックスフロー電池であるから、他の蓄電池に比べて蓄電の大容量化が可能であり、しかも、装置の大部分を占めるのは常用電解液を貯蔵する常用タンクであるから、地下の空きスペースなどに設置することができ、特にビルやマンションなどで使用するのに最適な蓄電システムとなる。   According to the characteristic configuration of the invention of claim 2, the common storage battery includes a regular cell for charging and discharging and a regular tank for storing the regular electrolyte, and the regular electrolyte is circulated between the regular cell and the regular tank. Because it is a redox flow battery, it is possible to increase the capacity of electricity storage compared to other storage batteries, and since most of the equipment is a regular tank that stores regular electrolytes, there is an empty space in the basement, etc. In particular, it is an electricity storage system that is most suitable for use in buildings and condominiums.

請求項３の発明の特徴構成は、前記非常用蓄電池が、充電と放電を行う非常用セルと非常用電解液を貯蔵する非常用タンクを備え、その非常用電解液を前記非常用セルと非常用タンクの間で循環させるレドックスフロー電池であり、前記熱交換器が、前記常用電解液と非常用電解液との間で熱交換するように構成されているところにある。   According to a third aspect of the present invention, the emergency storage battery includes an emergency cell for charging and discharging and an emergency tank for storing the emergency electrolyte, and the emergency electrolyte is used as the emergency cell and the emergency cell. A redox flow battery that circulates between the service tanks, wherein the heat exchanger is configured to exchange heat between the common electrolyte solution and the emergency electrolyte solution.

請求項３の発明の特徴構成によれば、非常用蓄電池が、充電と放電を行う非常用セルと非常用電解液を貯蔵する非常用タンクを備え、その非常用電解液を非常用セルと非常用タンクの間で循環させるレドックスフロー電池であるから、非常用蓄電池においても蓄電の大容量化が可能となり、非常用電解液を貯蔵する非常用タンクを地下の空きスペースなどに設置することで、ビルやマンションでの使用に最適な蓄電システムとなる。
そして、レドックスフロー電池では、電池性能の温度特性が電解液の温度に依存するので、常用蓄電池であるレドックスフロー電池の常用電解液と非常用蓄電池であるレドックスフロー電池の非常用電解液との間で熱交換することにより、常用蓄電池の発生熱を効率良く利用して非常用蓄電池を所定の温度範囲内に維持することができる。 According to the characteristic configuration of the invention of claim 3, the emergency storage battery includes an emergency cell for charging and discharging and an emergency tank for storing the emergency electrolyte, and the emergency electrolyte is used as the emergency cell and the emergency cell. Because it is a redox flow battery that circulates between emergency tanks, it is possible to increase the capacity of an emergency storage battery, and by installing an emergency tank for storing an emergency electrolyte in an empty space underground, The power storage system is optimal for use in buildings and condominiums.
In a redox flow battery, since the temperature characteristics of the battery performance depend on the temperature of the electrolyte, the redox flow battery, which is a regular storage battery, and the emergency electrolyte of a redox flow battery, which is an emergency storage battery, are used. By exchanging heat in the above, the emergency storage battery can be maintained within a predetermined temperature range by efficiently using the heat generated by the regular storage battery.

請求項４の発明の特徴構成は、前記熱交換器が、前記非常用タンク内に配設された常用電解液用の配管で構成されているところにある。   The characteristic configuration of the invention of claim 4 is that the heat exchanger is constituted by a pipe for a normal electrolyte disposed in the emergency tank.

請求項４の発明の特徴構成によれば、前記熱交換器が、非常用タンク内に配設された常用電解液用の配管で構成されているので、非常用タンク内に常用電解液用の配管を配設するだけの簡単な構造で済み、したがって、蓄電システムの低廉化を図ることができる。   According to the characteristic configuration of the invention of claim 4, since the heat exchanger is constituted by the pipe for the common electrolyte disposed in the emergency tank, the pipe for the common electrolyte is installed in the emergency tank. A simple structure is sufficient in which only the piping is provided. Therefore, the power storage system can be reduced in price.

請求項５の発明の特徴構成は、前記常用電解液と非常用電解液が、前記熱交換器を介して循環する加熱循環状態と、前記熱交換器を迂回して循環する非加熱循環状態とに切り換え自在に構成されているところにある。   The characteristic configuration of the invention of claim 5 is that a heating circulation state in which the normal electrolyte solution and an emergency electrolyte solution are circulated through the heat exchanger, and a non-heating circulation state in which the heat electrolyte is circulated around the heat exchanger. It is in a place that can be switched freely.

請求項５の発明の特徴構成によれば、常用電解液と非常用電解液が、熱交換器を介して循環する加熱循環状態と、熱交換器を迂回して循環する非加熱循環状態とに切り換え自在に構成されているので、加熱循環状態と非加熱循環状態とに切り換えることにより、非常用蓄電池の温度をより一層確実に所定の温度範囲内に維持することができる。 According to the characteristic configuration of the invention of claim 5, the normal electrolyte solution and the emergency electrolyte solution are heated and circulated through the heat exchanger, and are heated and circulated around the heat exchanger. Since it is configured to be switchable, the temperature of the emergency storage battery can be more reliably maintained within a predetermined temperature range by switching between the heating circulation state and the non-heating circulation state.

請求項６の発明の特徴構成は、前記非常用蓄電池が、鉛製の電極板と電解液などを備えた鉛蓄電池であるところにある。   According to a sixth aspect of the present invention, the emergency storage battery is a lead storage battery including a lead electrode plate and an electrolytic solution.

請求項６の発明の特徴構成によれば、非常用蓄電池が、鉛製の電極板と電解液などを備えた鉛蓄電池であるから、例えば、ニッケル水素やリチウムイオンなどを利用した他の蓄電池に比べて安価で、原材料も入手しやすく、しかも、常用蓄電池に接触あるいは隣接させて設置することもできるので、常用蓄電池側の熱を効率良く回収することができて実用的である。   According to the characteristic configuration of the invention of claim 6, since the emergency storage battery is a lead storage battery including a lead electrode plate and an electrolytic solution, for example, other storage batteries using nickel hydride, lithium ions, or the like. Compared to the low cost, the raw materials are easily available, and the battery can be installed in contact with or adjacent to the regular storage battery, so that the heat on the regular storage battery side can be efficiently recovered and is practical.

本発明による蓄電システムの実施の形態を図面に基づいて説明する。
この蓄電システムは、例えば、ビルやマンションの地下などに設置して、昼と夜との電力需要の差や季節による電力需要の差などを平準化するためなどに使用するもので、図１の原理図に示すように、図外の電気供給系Ｃ（例えば、電力会社からの供給電力）からの電気を充電して電気需要系Ｄ（例えば、各種の電気機器類）に放電する常用蓄電池Ａが、電気供給系Ｃと電気需要系Ｄとの間に設けられ、さらに、その常用蓄電池Ａに加えて、電気供給系Ｃからの電気を充電しておいて、電気供給系Ｃからの電気の供給が停止した際に電気需要系Ｄに放電する非常用蓄電池Ｂが、電気供給系Ｃと電気需要系Ｄとの間に設けられている。 An embodiment of a power storage system according to the present invention will be described with reference to the drawings.
This power storage system is installed, for example, in the basement of a building or condominium, and is used for leveling the difference in power demand between day and night, the difference in seasonal power demand, etc. As shown in the principle diagram, a regular storage battery A that charges electricity from a power supply system C (for example, power supplied from an electric power company) outside the figure and discharges it to an electricity demand system D (for example, various electric devices). Is provided between the electricity supply system C and the electricity demand system D, and in addition to the regular storage battery A, the electricity from the electricity supply system C is charged and the electricity from the electricity supply system C is charged. An emergency storage battery B that discharges to the electricity demand system D when the supply is stopped is provided between the electricity supply system C and the electricity demand system D.

常用蓄電池Ａは、充電と放電を行う常用セル１と、常用電解液を貯蔵する正極用の常用タンク２ａおよび負極用の常用タンク２ｂなどを備えたレドックスフロー電池であって、正極用の常用タンク２ａには、常用電解液３ａとしてのＶ5+およびＶ4+硫酸水溶液が貯蔵され、負極用の常用タンク２ｂには、常用電解液３ｂとしてのＶ2+およびＶ3+硫酸水溶液が貯蔵される。
常用セル１は、電子の通過を許容し他のイオンの通過を阻止するイオン交換膜からなる隔膜４によって正極セル１ａと負極セル１ｂに区画され、正極セル１ａには正極５ａが、負極セル１ｂには負極５ｂが配置されて、正極５ａと負極５ｂが、交流電気を直流電気に変換したり、逆に、直流電気を交流電気に変換する交直変換装置６を介して、電気供給系Ｃと電気需要系Ｄとにそれぞれ接続されている。 The regular storage battery A is a redox flow battery including a regular cell 1 for charging and discharging, a regular tank 2a for positive electrode and a regular tank 2b for negative electrode, and the like. 2a stores V 5+ and V 4+ sulfuric acid aqueous solutions as the common electrolyte 3a, and the negative tank common tank 2b stores V 2+ and V 3+ sulfuric acid aqueous solutions as the normal electrolyte 3b. The
The regular cell 1 is partitioned into a positive electrode cell 1a and a negative electrode cell 1b by a diaphragm 4 made of an ion exchange membrane that allows passage of electrons and blocks passage of other ions. The positive electrode cell 1a has a positive electrode 5a and a negative electrode cell 1b. Is provided with a negative electrode 5b, and the positive electrode 5a and the negative electrode 5b convert AC electricity into DC electricity, or conversely, through an AC / DC converter 6 that converts DC electricity into AC electricity, Each is connected to the electric demand system D.

正極セル１ａと正極用の常用タンク２ａは、配管で構成される往路７ａと復路８ａにより接続され、往路７ａには循環ポンプ９ａが介装され、復路８ａには冷却器１０ａと熱交換器１１ａが介装されて、循環ポンプ９ａにより常用電解液３ａが正極セル１ａと正極用の常用タンク２ａ間で循環されるように構成されている。
同様に、負極セル１ｂと負極用の常用タンク２ｂも、配管で構成される往路７ｂと復路８ｂにより接続され、往路７ｂには循環ポンプ９ｂが介装され、復路８ｂには冷却器１０ｂと熱交換器１１ｂが介装されて、循環ポンプ９ｂにより常用電解液３ｂが負極セル１ｂと負極用の常用タンク２ｂ間で循環されるように構成されている。 The positive electrode cell 1a and the positive electrode service tank 2a are connected by a forward path 7a and a return path 8a configured by piping, a circulation pump 9a is interposed in the forward path 7a, and a cooler 10a and a heat exchanger 11a are connected in the return path 8a. Is interposed between the positive electrode cell 1a and the positive electrode service tank 2a by the circulation pump 9a.
Similarly, the negative electrode cell 1b and the negative service tank 2b are also connected by a forward path 7b and a return path 8b made of piping. A circulation pump 9b is interposed in the forward path 7b, and a cooler 10b and a heat are connected in the return path 8b. The exchanger 11b is interposed, and the common electrolyte 3b is circulated between the negative electrode cell 1b and the negative tank 2b by the circulation pump 9b.

非常用蓄電池Ｂも、充電と放電を行う非常用セル１２と、非常用電解液を貯蔵する正極用の非常用タンク１３ａおよび負極用の非常用タンク１３ｂなどを備えたレドックスフロー電池であって、正極用の非常用タンク１３ａには、非常用電解液１４ａとしてのＶ5+およびＶ4+硫酸水溶液が、負極用の非常用タンク１３ｂには、非常用電解液１４ｂとしてのＶ2+およびＶ3+硫酸水溶液が貯蔵される。
非常用セル１２も、電子の通過を許容し他のイオンの通過を阻止するイオン交換膜からなる隔膜１５によって正極セル１２ａと負極セル１２ｂに区画され、正極セル１２ａには正極１６ａが、負極セル１２ｂには負極１６ｂが配置されて、正極１６ａと負極１６ｂが、交流電気を直流電気に変換したり、逆に、直流電気を交流電気に変換する交直変換装置１７を介して、電気供給系Ｃと電気需要系Ｄとにそれぞれ接続されている。 The emergency storage battery B is also a redox flow battery including an emergency cell 12 for charging and discharging, a positive emergency tank 13a for storing an emergency electrolyte, a negative emergency tank 13b, and the like. The positive tank emergency tank 13a has V 5+ and V 4+ sulfuric acid aqueous solutions as the emergency electrolyte solution 14a, and the negative electrode emergency tank 13b has V 2+ and V 4 as emergency electrolyte solutions 14b. 3+ sulfuric acid aqueous solution is stored.
The emergency cell 12 is also divided into a positive electrode cell 12a and a negative electrode cell 12b by a diaphragm 15 made of an ion exchange membrane that allows passage of electrons and blocks passage of other ions. The positive electrode cell 12a has a positive electrode 16a and a negative electrode cell. The negative electrode 16b is disposed in 12b, and the positive electrode 16a and the negative electrode 16b convert the AC electricity into DC electricity, or conversely through the AC / DC converter 17 that converts DC electricity into AC electricity. And the electricity demand system D, respectively.

この非常用蓄電池Ｂにおいても、正極セル１２ａと正極用の非常用タンク１３ａは、配管で構成される往路１８ａと復路１９ａにより接続され、往路１８ａに介装された循環ポンプ２０ａにより非常用電解液１４ａが正極セル１２ａと正極用の非常用タンク１３ａ間で循環されるように構成されるとともに、常用蓄電池Ａの熱交換器１１ａが正極用の非常用タンク１３ａ内に配設されて、常用電解液３ａと非常用電解液１４ａとの間で熱交換するように構成されている。
具体的には、熱交換器１１ａが、非常用タンク１３ａ内に配設された常用電解液３ａ用の配管である復路８ａにより構成されているが、より熱交換率のよい熱交換器を復路８ａに介装して実施することもできる。 Also in this emergency storage battery B, the positive electrode cell 12a and the positive-electrode emergency tank 13a are connected by an outward path 18a and a return path 19a constituted by piping, and an emergency electrolyte solution is provided by a circulation pump 20a interposed in the outward path 18a. 14a is configured to circulate between the positive electrode cell 12a and the emergency tank 13a for the positive electrode, and the heat exchanger 11a of the regular storage battery A is disposed in the emergency tank 13a for the positive electrode, Heat exchange is performed between the liquid 3a and the emergency electrolyte 14a.
Specifically, the heat exchanger 11a is constituted by a return path 8a that is a pipe for the service electrolyte 3a disposed in the emergency tank 13a. However, a heat exchanger having a better heat exchange rate is provided in the return path. It can also be implemented by interposing 8a.

同様に、負極セル１２ｂと負極用の非常用タンク１３ｂも、配管で構成される往路１８ｂと復路１９ｂにより接続され、往路１８ｂに介装の循環ポンプ２０ｂにより非常用電解液１４ｂが負極セル１２ｂと負極用の非常用タンク１３ｂ間で循環されるように構成され、かつ、常用蓄電池Ａの熱交換器１１ｂが負極用の非常用タンク１３ｂ内に配設されて、常用電解液３ｂと非常用電解液１４ｂとの間で熱交換するように構成されている。
この熱交換器１１ｂに関しても、非常用タンク１３ｂ内に配設された常用電解液３ｂ用の配管である復路８ｂにより構成されているが、熱交換率のよい熱交換器を復路８ｂに介装して実施することもできる。 Similarly, the negative electrode cell 12b and the emergency tank 13b for negative electrode are also connected by a forward path 18b and a return path 19b constituted by piping, and the emergency electrolyte solution 14b is connected to the negative electrode cell 12b by a circulating pump 20b interposed in the forward path 18b. It is configured so as to be circulated between the negative-electrode emergency tank 13b, and the heat exchanger 11b of the regular storage battery A is disposed in the negative-electrode emergency tank 13b, so that the common electrolyte 3b and the emergency electrolysis are provided. It is configured to exchange heat with the liquid 14b.
The heat exchanger 11b is also configured by a return path 8b that is a pipe for the service electrolyte 3b disposed in the emergency tank 13b. However, a heat exchanger having a good heat exchange rate is interposed in the return path 8b. It can also be implemented.

以上の構成からなる蓄電システムは、その作動が全て制御装置Ｅにより制御されるように構成されていて、制御装置Ｅには、常用電解液３ａ，３ｂの温度を検出するために常用タンク２ａ，２ｂ内に配設された常用温度センサ２１ａ，２１ｂからの検出信号、さらには、非常用電解液１４ａ，１４ｂの温度を検出するために非常用タンク１３ａ，１３ｂ内に配設された非常用温度センサ２２ａ，２２ｂからの検出信号などが入力されるように構成されている。
そして、例えば、常用蓄電池Ａの充電時や放電時には、循環ポンプ９ａ，９ｂが駆動されて常用電解液３ａ，３ｂが循環され、必要に応じて、非常用蓄電池Ｂの循環ポンプ２０ａ，２０ｂも駆動され、充電や放電により発生する常用蓄電池Ａ側の熱が、常用電解液３ａ，３ｂおよび熱交換器１１ａ，１１ｂを介して非常用電解液１４ａ，１４ｂに伝えられるとともに、冷却器１０ａ，１０ｂもＯＮ、ＯＦＦされて、非常用電解液１４ａ，１４ｂが所定の温度範囲内に維持されるのである。 The power storage system configured as described above is configured such that the operation thereof is all controlled by the control device E, and the control device E includes the regular tanks 2a and 2b for detecting the temperature of the regular electrolytes 3a and 3b. 2b, an emergency temperature provided in the emergency tanks 13a and 13b for detecting the detection signals from the service temperature sensors 21a and 21b provided in the 2b, and the temperature of the emergency electrolytes 14a and 14b. The detection signals from the sensors 22a and 22b are input.
For example, when charging or discharging the regular storage battery A, the circulation pumps 9a and 9b are driven to circulate the regular electrolytes 3a and 3b. If necessary, the circulation pumps 20a and 20b of the emergency storage battery B are also driven. The heat on the side of the regular storage battery A generated by charging and discharging is transmitted to the emergency electrolytes 14a and 14b via the regular electrolytes 3a and 3b and the heat exchangers 11a and 11b, and the coolers 10a and 10b are also used. The emergency electrolytes 14a and 14b are maintained within a predetermined temperature range by being turned on and off.

〔別実施形態〕
つぎに、別の実施形態について説明するが、重複説明を避けるため、先の実施形態で説明した構成部品や同じ作用を有する構成部品については、同じ符号を付すことにより説明を省略し、主として先の実施形態と異なる構成について説明する。 [Another embodiment]
Next, another embodiment will be described. However, in order to avoid redundant description, the components described in the previous embodiment and the components having the same action are denoted by the same reference numerals, and the description thereof is omitted. A configuration different from the embodiment will be described.

（１）図２に示す蓄電システムにおいては、熱交換器１１ａ，１１ｂを迂回する迂回路２３ａ，２３ｂが、常用蓄電池Ａの復路８ａ，８ｂに設けられ、かつ、常用電解液３ａ，３ｂが、熱交換器１１ａ，１１ｂを通流して非常用電解液１４ａ，１４ｂを加熱しながら循環する加熱循環状態と、迂回路２３ａ，２３ｂを通流して非常用電解液１４ａ，１４ｂを加熱せずに循環する非加熱循環状態とに切り換えるための三方弁２４ａ，２４ｂが設けられていて、両三方弁２４ａ，２４ｂの切り換え作動も制御装置Ｅにより制御されるように構成されている。 (1) In the power storage system shown in FIG. 2, detours 23a and 23b that bypass the heat exchangers 11a and 11b are provided in the return paths 8a and 8b of the regular storage battery A, and the regular electrolytes 3a and 3b are A heating circulation state in which the emergency electrolytes 14a and 14b are circulated while flowing through the heat exchangers 11a and 11b, and a circulation without heating the emergency electrolytes 14a and 14b through the detours 23a and 23b. The three-way valves 24a and 24b for switching to the non-heated circulation state are provided, and the switching operation of both the three-way valves 24a and 24b is also controlled by the control device E.

なお、図１と図２に示した実施形態では、常用蓄電池Ａの復路８ａ，８ｂに熱交換器１１ａ，１１ｂを設けて、それを非常用蓄電池Ｂの非常用タンク１３ａ，１３ｂ内に配設した例を示したが、例えば、非常用蓄電池Ｂの往路１８ａ，１８ｂあるいは復路１９ａ，１９ｂに熱交換器を設けて、それを常用蓄電池Ａの常用タンク２ａ，２ｂ内に配設することもでき、さらに、常用蓄電池Ａの復路８ａ，８ｂと非常用蓄電池Ｂの往路１８ａ，１８ｂまたは復路１９ａ，１９ｂとの間に熱交換器を介装して、常用電解液３ａ，３ｂと非常用電解液１４ａ，１４ｂとの間で熱交換するように構成することもでき、熱交換器１１ａ，１１ｂの配設箇所や具体的な構造などについては種々の変更が可能である。   In the embodiment shown in FIGS. 1 and 2, heat exchangers 11 a and 11 b are provided in the return paths 8 a and 8 b of the regular storage battery A, and these are disposed in the emergency tanks 13 a and 13 b of the emergency storage battery B. However, for example, a heat exchanger may be provided in the forward path 18a, 18b or the return path 19a, 19b of the emergency storage battery B, and the heat exchanger may be disposed in the regular tanks 2a, 2b of the regular storage battery A. In addition, a heat exchanger is interposed between the return paths 8a and 8b of the regular storage battery A and the forward paths 18a and 18b or the return paths 19a and 19b of the emergency storage battery B, so that the regular electrolyte solutions 3a and 3b and the emergency electrolyte solution are provided. It can also comprise so that it may heat-exchange between 14a and 14b, and various changes are possible about the arrangement | positioning location of the heat exchangers 11a and 11b, a specific structure, etc.

（２）これまでの実施形態では、常用蓄電池Ａと非常用蓄電池Ｂをレドックスフロー電池で構成した例を示したが、両蓄電池Ａ，Ｂのいずれか一方あるいは両方を鉛製の電極板と電解液などで構成される鉛蓄電池、または、ＮＡＳ蓄電池（ナトリウム硫黄蓄電池）などの他の蓄電池で構成することもできる。
例えば、鉛蓄電池やＮＡＳ蓄電池であれば、レドックスフロー電池とは異なり、電解液が循環しないので、熱交換器としてヒートパイプを使用することになり、特に、鉛蓄電池の場合には、ＮＡＳ蓄電池とは異なり、常用蓄電池Ａに接触させることもできるので、常用蓄電池Ａと非常用蓄電池Ｂとを直接接触させたり、隣接配置して別の熱媒体（例えば、空気）を介して両蓄電池Ａ，Ｂ間で熱交換を行うように構成することもできる。 (2) In the embodiments described so far, the example in which the regular storage battery A and the emergency storage battery B are configured by redox flow batteries has been shown. However, either one or both of the storage batteries A and B is electrolyzed with a lead electrode plate. It can also be comprised with other storage batteries, such as a lead storage battery comprised with a liquid etc., or a NAS storage battery (sodium-sulfur storage battery).
For example, in the case of a lead storage battery or a NAS storage battery, unlike a redox flow battery, the electrolyte does not circulate, so a heat pipe is used as a heat exchanger. In particular, in the case of a lead storage battery, a NAS storage battery In contrast, since the battery can be brought into contact with the regular storage battery A, the regular storage battery A and the emergency storage battery B can be brought into direct contact with each other, or the storage batteries A and B can be disposed adjacent to each other via another heat medium (for example, air). It can also be configured to perform heat exchange between them.

蓄電システムの原理図Principle of power storage system 別の実施形態による蓄電システムの原理図Principle diagram of power storage system according to another embodiment

符号の説明Explanation of symbols

１ 常用セル
２ａ，２ｂ 常用タンク
３ａ，３ｂ 常用電解液
８ａ，８ｂ 常用電解液用の配管
１１ａ，１１ｂ 熱交換器
１２ 非常用セル
１３ａ，１３ｂ 非常用タンク
１４ａ，１４ｂ 非常用電解液
Ａ 常用蓄電池
Ｂ 非常用蓄電池
Ｃ 電気供給系
Ｄ 電気需要系 1 service cell 2a, 2b service tank 3a, 3b service electrolyte 8a, 8b service electrolyte piping 11a, 11b heat exchanger 12 emergency cell 13a, 13b emergency tank 14a, 14b emergency electrolyte A service battery B Emergency storage battery C Electricity supply system D Electricity demand system

Claims (6)

電気供給系からの電気を充電して電気需要系に放電する常用蓄電池が、前記電気供給系と電気需要系との間に設けられている蓄電システムであって、
前記電気供給系からの電気を充電して電気供給系からの電気の供給が停止した際に前記電気需要系に放電する非常用蓄電池が設けられ、
前記非常用蓄電池が、その非常用蓄電池と前記常用蓄電池との間に設けられた熱交換器を介して前記常用蓄電池からの発生熱により加熱されるように構成されている蓄電システム。 A regular storage battery that charges electricity from the electricity supply system and discharges it to the electricity demand system is an electricity storage system provided between the electricity supply system and the electricity demand system,
An emergency storage battery is provided that charges the electricity from the electricity supply system and discharges to the electricity demand system when the electricity supply from the electricity supply system stops.
A power storage system configured such that the emergency storage battery is heated by heat generated from the regular storage battery via a heat exchanger provided between the emergency storage battery and the regular storage battery. 前記常用蓄電池が、充電と放電を行う常用セルと常用電解液を貯蔵する常用タンクを備え、その常用電解液を前記常用セルと常用タンクの間で循環させるレドックスフロー電池である請求項１に記載の蓄電システム。   2. The redox flow battery according to claim 1, wherein the regular storage battery is a redox flow battery that includes a regular cell that charges and discharges and a regular tank that stores a regular electrolyte, and circulates the regular electrolyte between the regular cell and the regular tank. Power storage system. 前記非常用蓄電池が、充電と放電を行う非常用セルと非常用電解液を貯蔵する非常用タンクを備え、その非常用電解液を前記非常用セルと非常用タンクの間で循環させるレドックスフロー電池であり、前記熱交換器が、前記常用電解液と非常用電解液との間で熱交換するように構成されている請求項２に記載の蓄電システム。   The emergency storage battery includes an emergency cell for charging and discharging, and an emergency tank for storing an emergency electrolyte, and a redox flow battery for circulating the emergency electrolyte between the emergency cell and the emergency tank The power storage system according to claim 2, wherein the heat exchanger is configured to exchange heat between the normal electrolyte solution and the emergency electrolyte solution. 前記熱交換器が、前記非常用タンク内に配設された常用電解液用の配管で構成されている請求項３に記載の蓄電システム。   The power storage system according to claim 3, wherein the heat exchanger is configured by a pipe for a normal electrolyte disposed in the emergency tank. 前記常用電解液と非常用電解液が、前記熱交換器を介して循環する加熱循環状態と、前記熱交換器を迂回して循環する非加熱循環状態とに切り換え自在に構成されている請求項３または４に記載の蓄電システム。   The normal electrolyte solution and the emergency electrolyte solution are configured to be switchable between a heated circulation state that circulates through the heat exchanger and a non-heated circulation state that circulates around the heat exchanger. 5. The electricity storage system according to 3 or 4. 前記非常用蓄電池が、鉛製の電極板と電解液などを備えた鉛蓄電池である請求項２に記載の蓄電システム。   The power storage system according to claim 2, wherein the emergency storage battery is a lead storage battery including a lead electrode plate and an electrolytic solution.
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WO2015182364A1 (en) * 2014-05-29 2015-12-03 住友電気工業株式会社 Electrolyte-circulating battery
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JP2015520484A (en) * 2012-05-10 2015-07-16 イマジー パワー システムズ，インコーポレーテッド Vanadium flow battery
WO2015182364A1 (en) * 2014-05-29 2015-12-03 住友電気工業株式会社 Electrolyte-circulating battery
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WO2018114013A1 (en) * 2016-12-23 2018-06-28 Ewe Gasspeicher Gmbh Method for leaching out a cavity, cavity produced using said method, method for producing an energy storage device, and energy storage device produced using said method
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