WO2015145693A1 - Air-battery regeneration device, air-battery system, and air-battery regeneration method - Google Patents

Air-battery regeneration device, air-battery system, and air-battery regeneration method Download PDF

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Publication number
WO2015145693A1
WO2015145693A1 PCT/JP2014/059001 JP2014059001W WO2015145693A1 WO 2015145693 A1 WO2015145693 A1 WO 2015145693A1 JP 2014059001 W JP2014059001 W JP 2014059001W WO 2015145693 A1 WO2015145693 A1 WO 2015145693A1
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air battery
liquid
sludge
cell
air
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PCT/JP2014/059001
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French (fr)
Japanese (ja)
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寛和 小松
義喜 新村
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日産自動車株式会社
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Priority to PCT/JP2014/059001 priority Critical patent/WO2015145693A1/en
Priority to JP2016509775A priority patent/JP6187793B2/en
Publication of WO2015145693A1 publication Critical patent/WO2015145693A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M12/00—Hybrid cells; Manufacture thereof
    • H01M12/04—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
    • H01M12/06—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature

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  • the present invention relates to an air battery regeneration device, an air battery system, and an air battery regeneration method. More specifically, the present invention relates to an air battery regenerator that regenerates a reusable air battery, an air battery system that includes the air battery regenerator and a reusable air battery, and a method for regenerating the air battery.
  • Non-Patent Document 1 an air battery having a bi-cell structure has been proposed (see Non-Patent Document 1). Further, in a salt water type air battery, it is known that a large amount of sludge (for example, Mg (OH) 2 ⁇ nH 2 O can be generated) is generated and deposited in a cell during power generation. ing. For example, when reusing a negative electrode exchange type air battery, it is known that such sludge needs to be removed.
  • sludge for example, Mg (OH) 2 ⁇ nH 2 O can be generated
  • Non-Patent Document 1 sludge is removed because the sludge may lose moisture due to the heat generated during power generation when the discharge is completed, so the sludge is removed. In some cases, it was necessary to disassemble the cell, and it was extremely difficult to remove the sludge.
  • the present invention has been made in view of such problems of the conventional technology.
  • the present invention also provides an air battery regenerator and an air battery regenerator that regenerate a reusable air battery by removing a large amount of sludge without substantially decomposing a stack structure formed by a plurality of cells.
  • an air battery system including the reusable air battery, and a method for regenerating the air battery.
  • the inventors of the present invention made extensive studies to achieve the above object. As a result, when the discharge of the reusable air battery is completed, the above object is achieved by providing the liquid supply means for supplying the liquid to the sludge existing in the cell portion of the stack structure of the air battery. The inventors have found that this can be achieved and have completed the present invention.
  • the air battery regenerator of the present invention includes a liquid supply means for supplying liquid to sludge existing in the cell portion of the stack structure of the air battery when the discharge of the reusable air battery is completed. It is.
  • the air battery system of the present invention includes the air battery regenerator of the present invention and a reusable air battery.
  • the air battery regeneration method of the present invention is an air battery regeneration method for supplying liquid to sludge existing in the cell portion of the stack structure of the air battery when the discharge of the reusable air battery is finished. is there.
  • the liquid supply means for supplying the liquid to the sludge existing in the cell portion of the stack structure of the air battery is provided. Therefore, air battery regenerators that recycle reusable air batteries and air battery regenerators can be reused by removing a large amount of sludge without almost decomposing the stack structure formed by a plurality of cells.
  • An air battery system including an air battery and a method for regenerating the air battery can be provided.
  • FIG. 1 is a cross-sectional view schematically showing an air battery regenerator or an air battery system according to an embodiment of the present invention.
  • FIG. 2 is a perspective view schematically showing an air battery regenerator or an air battery system according to an embodiment of the present invention.
  • FIG. 1 is a cross-sectional view schematically showing an air battery regenerator or an air battery system according to an embodiment of the present invention.
  • FIG. 2 is a perspective view schematically showing an air battery regenerator or an air battery system according to an embodiment of the present invention. That is, FIG. 1 and FIG. 2 show an air battery regeneration device applied to a reusable air battery, or an air battery system including an air battery regeneration device and a reusable air battery.
  • the air battery regenerator 10 generates sludge present in the cell portion 54 of the stack structure 52 of the air battery 50 when the reusable air battery 50 is discharged.
  • Liquid supply means 12 for supplying a liquid is provided.
  • the reusable air battery 50 includes a stack structure 52 formed of a plurality of cell portions 54, and the cell portion 54 is referred to as a bi-cell structure including two positive electrodes 54b for one negative electrode 54a. It has a structure. Furthermore, 51 in the figure indicates the air flow path portion, and E indicates the remaining electrolyte.
  • the air battery is not particularly limited as long as it generates sludge during power generation, and air having a conventionally known air electrode (positive electrode), metal electrode (negative electrode), electrolyte, and the like.
  • a battery can be applied.
  • the metal electrode (negative electrode) a magnesium electrode or an aluminum electrode containing magnesium can be used, and a sodium chloride aqueous solution can be used as the electrolytic solution.
  • a negative electrode is replaceable, it is not limited to this.
  • the “reusable air battery” means an air battery that can obtain a predetermined output again by removing sludge and supplying the electrolyte or replacing the negative electrode as necessary. Means.
  • “when the discharge of the air battery is completed” means that, for example, in the cell portion of the air battery, a predetermined output is obtained due to sludge accumulation, electrolyte depletion, negative electrode consumption, and the like. It means when you can't.
  • the sludge to be removed can be ensured to have fluidity. Therefore, by removing a large amount of sludge without substantially decomposing the stack structure formed by a plurality of cells, the sludge can be reused.
  • An air battery regeneration device that regenerates a usable air battery, or an air battery system that includes an air battery regeneration device and a reusable air battery.
  • the liquid is supplied to the sludge to ensure fluidity without almost disassembling the stack structure, and in the cell part of the stack structure of the air battery.
  • the air battery can be regenerated and the air battery can be reused.
  • the liquid supply means 12 has a liquid intake portion 12a having a tube structure for taking in liquid from a liquid tank 53 provided in the air battery 50, and the liquid is branched from the liquid intake portion 12a.
  • a pump unit 12c that feeds the cell supply unit 12b having the above-described tube structure.
  • the intake port a of the liquid intake portion 12 a is disposed on the bottom 53 a side of the liquid tank 53.
  • the liquid supply means may have a liquid intake portion that takes in a liquid from a liquid junction that connects the cell portions provided inside the air battery.
  • the liquid supply means does not have a cell supply unit that supplies liquid from the inside of the air battery to the cell unit, but has a cell supply unit that supplies liquid from the outside of the air battery to the cell unit.
  • the liquid supply means may have a liquid intake portion that takes in the liquid from an external tank or a liquid tank of the air battery regenerator.
  • a liquid that dissolves tap water or sludge for example, an acidic liquid such as citric acid
  • a liquid that dissolves sludge can be used without particular limitation.
  • sludge can be removed more efficiently.
  • the above-described configuration is also included in the scope of the present invention.
  • a filter portion indicated by 12d is disposed in the liquid intake portion 12a of the liquid supply means 12. With such a configuration, it is possible to prevent sludge from entering the pump portion 12c. In the present invention, it is preferable to have such a configuration, but it is not essential.
  • a sludge removal means 14 is provided for removing the sludge after the liquid supply means 12 starts supplying the liquid when the liquid supply means 12 starts.
  • the pump portion 14c is connected to the filter portion 14a and the drain portion 14b by a pipe 14d.
  • the cross-sectional area of the portion having the smallest cross-sectional area (for example, the narrowest portion indicated by 56a in the drawing) of the cross-section perpendicular to the liquid flow direction in the liquid junction portion 56 is usually sludge removal. It is because it is larger than the cross-sectional area of the liquid injection port of the cell supply part 12b considered as another connection position of a means. Specifically, even if the width of the liquid injection port is large, it is equivalent to the distance between the electrodes. For example, the diameter is about several mm to 5 mm, and the most in the cross section perpendicular to the liquid flow direction in the liquid junction part.
  • the cross-sectional area of the portion having a small cross-sectional area is determined by the lower part length of the cell part, and is usually secured longer than the width of the liquid injection port. In the present invention, it is preferable to have such a configuration, but it is not essential.
  • the filter parts 12d and 14a are detachable. With such a configuration, it is possible to frequently replace a filter portion that may cause clogging when sludge removal is repeated, and to efficiently remove sludge. Of course, you may enable it to replace
  • the pump part 14c attracts
  • the pump unit sucks and removes pressure to remove the sludge, so that the sludge is trapped by the filter unit and the liquid is accumulated in the drain unit.
  • a pump capable of intermittently repeating suction for example, a diaphragm type dry vacuum pump (specifically, a diaphragm type dry vacuum pump DAP-15 manufactured by ASONE Co., Ltd. can be used).
  • a diaphragm type dry vacuum pump specifically, a diaphragm type dry vacuum pump DAP-15 manufactured by ASONE Co., Ltd. can be used.
  • a moisture detection unit 55 that detects the amount of moisture in the cell unit 54 is provided, and the liquid supply unit 12 controls the supply amount of the liquid based on the detection result of the moisture detection unit 55.
  • the sludge can supply a necessary amount of liquid to ensure optimum fluidity, so that the stack structure is hardly disassembled and is contained in the cell portion of the stack structure of the air battery. A large amount of existing sludge can be efficiently removed.
  • the moisture detection means for example, a dielectric constant of sludge can be measured, and a moisture amount sensor using this can be applied.
  • the present invention is not limited to this, and conventionally known moisture detecting means can be applied. In the present invention, it is preferable to have such a configuration, but it is not essential.
  • the air battery 50 has a supply port 54 c for supplying a liquid to the cell portion 54. If the air battery is configured to have a dedicated supply port for supplying a liquid that ensures the fluidity of the sludge, for example, a supply port suitable for sludge removal such that the supplied liquid can be sprayed toward the sludge. Can be designed.
  • the supply port 54c is preferably a negative electrode removal port formed after the negative electrode 54a of the air battery 50 is removed.
  • the air battery is configured to use the negative electrode removal port of the air battery as a supply port for supplying a liquid that ensures the fluidity of sludge, sludge can be removed together with the replacement of the negative electrode. It is possible to design a supply port suitable for sludge removal such that liquid can be sprayed toward the sludge.
  • a supply port for supplying the liquid is formed by removing the negative electrode of the air battery, and the supply port Designing a supply port suitable for sludge removal, such as being able to remove sludge in conjunction with negative electrode replacement by supplying liquid from, and spraying the supplied liquid toward the sludge, for example Can do.
  • the liquid may be supplied not from the cell supply part side but from the liquid junction part side. At this time, the liquid can be supplied from the liquid junction part side by changing the configuration of the liquid supply means.
  • Air battery regeneration apparatus 12 Liquid supply means 12a Liquid intake part 12b Cell supply part 12c Pump part 12d Filter part 14 Sludge removal means 14a Filter part 14b Drain part 14c Pump part 14d Pipe 14 Liquid supply means 14a Liquid tank 14b Liquid intake Part 14c pump part 14d filter part 50 air battery 51 air flow path part 52 stack structure 53 liquid tank 53a bottom part 54 cell part 54a negative electrode (metal electrode) 54b Positive electrode (air electrode) 54c Supply port 55 Moisture detection means 56 Liquid junction 56a Narrowest part a Intake port E Electrolyte

Abstract

This air-battery regeneration device (10) has a liquid-supplying means (12) that, when a reusable air battery (50) has finished discharging, supplies a liquid to sludge that is present inside a cell section (54) of a stack structure (52) of said air battery (50). This air-battery system comprises the aforementioned air-battery regeneration device (10) and a reusable air battery (50). In this air-battery regeneration method, when the reusable air battery (50) has finished discharging, a liquid is supplied to sludge that is present inside a cell section (54) of a stack structure (52) of said air battery (50).

Description

空気電池再生装置、空気電池システム、及び空気電池の再生方法Air battery regeneration device, air battery system, and air battery regeneration method
　本発明は、空気電池再生装置、空気電池システム、及び空気電池の再生方法に関する。更に詳細には、本発明は、再利用可能な空気電池を再生する空気電池再生装置、空気電池再生装置と再利用可能な空気電池とを具備した空気電池システム、及び空気電池の再生方法に関する。 The present invention relates to an air battery regeneration device, an air battery system, and an air battery regeneration method. More specifically, the present invention relates to an air battery regenerator that regenerates a reusable air battery, an air battery system that includes the air battery regenerator and a reusable air battery, and a method for regenerating the air battery.
　従来、バイセル構造を有する空気電池が提案されている（非特許文献１参照。）。
　また、塩水型の空気電池においては、発電の際に大量のスラッジ（例えば、Ｍｇ（ＯＨ）２・ｎＨ２Ｏなどを挙げることができる。）がセル内に生成し、堆積することが知られている。
　そして、例えば、負極交換型の空気電池を再利用する場合には、このようなスラッジを除去する必要があることが知られている。 Conventionally, an air battery having a bi-cell structure has been proposed (see Non-Patent Document 1).
Further, in a salt water type air battery, it is known that a large amount of sludge (for example, Mg (OH) 2 · nH 2 O can be generated) is generated and deposited in a cell during power generation. ing.
For example, when reusing a negative electrode exchange type air battery, it is known that such sludge needs to be removed.
　しかしながら、非特許文献１に記載のバイセル構造を有する空気電池であっても、放電が終了したときには発電の際の発熱によりスラッジが水分を失い乾燥した状態となることがあるため、スラッジを除去する際にはセルを分解する必要があり、スラッジの除去は極めて困難であった。 However, even in the air battery having the bi-cell structure described in Non-Patent Document 1, sludge is removed because the sludge may lose moisture due to the heat generated during power generation when the discharge is completed, so the sludge is removed. In some cases, it was necessary to disassemble the cell, and it was extremely difficult to remove the sludge.
　本発明は、このような従来技術の有する課題に鑑みてなされたものである。そして、本発明は、複数のセルによって形成されるスタック構造体を殆ど分解することなく、大量のスラッジを除去することによって、再利用可能な空気電池を再生する空気電池再生装置、空気電池再生装置と再利用可能な空気電池とを具備した空気電池システム、及び空気電池の再生方法を提供することを目的としている。 The present invention has been made in view of such problems of the conventional technology. The present invention also provides an air battery regenerator and an air battery regenerator that regenerate a reusable air battery by removing a large amount of sludge without substantially decomposing a stack structure formed by a plurality of cells. And an air battery system including the reusable air battery, and a method for regenerating the air battery.
　本発明者らは、上記目的を達成するため鋭意検討を重ねた。その結果、再利用可能な空気電池の放電が終了したときに、空気電池のスタック構造体のセル部内に存在するスラッジに液体を供給する液体供給手段を備えた構成とすることにより、上記目的が達成できることを見出し、本発明を完成するに至った。 The inventors of the present invention made extensive studies to achieve the above object. As a result, when the discharge of the reusable air battery is completed, the above object is achieved by providing the liquid supply means for supplying the liquid to the sludge existing in the cell portion of the stack structure of the air battery. The inventors have found that this can be achieved and have completed the present invention.
　すなわち、本発明の空気電池再生装置は、再利用可能な空気電池の放電が終了したときに、空気電池のスタック構造体のセル部内に存在するスラッジに液体を供給する液体供給手段を備えたものである。 That is, the air battery regenerator of the present invention includes a liquid supply means for supplying liquid to sludge existing in the cell portion of the stack structure of the air battery when the discharge of the reusable air battery is completed. It is.
　また、本発明の空気電池システムは、上記本発明の空気電池再生装置と、再利用可能な空気電池とを具備したものである。 The air battery system of the present invention includes the air battery regenerator of the present invention and a reusable air battery.
　更に、本発明の空気電池の再生方法は、再利用可能な空気電池の放電が終了したときに、空気電池のスタック構造体のセル部内に存在するスラッジに液体を供給する空気電池の再生方法である。 Further, the air battery regeneration method of the present invention is an air battery regeneration method for supplying liquid to sludge existing in the cell portion of the stack structure of the air battery when the discharge of the reusable air battery is finished. is there.
　本発明によれば、再利用可能な空気電池の放電が終了したときに、空気電池のスタック構造体のセル部内に存在するスラッジに液体を供給する液体供給手段を備えた構成とした。
　そのため、複数のセルによって形成されるスタック構造体を殆ど分解することなく、大量のスラッジを除去することによって、再利用可能な空気電池を再生する空気電池再生装置、空気電池再生装置と再利用可能な空気電池とを具備した空気電池システム、及び空気電池の再生方法を提供することができる。 According to the present invention, when the discharge of the reusable air battery is completed, the liquid supply means for supplying the liquid to the sludge existing in the cell portion of the stack structure of the air battery is provided.
Therefore, air battery regenerators that recycle reusable air batteries and air battery regenerators can be reused by removing a large amount of sludge without almost decomposing the stack structure formed by a plurality of cells. An air battery system including an air battery and a method for regenerating the air battery can be provided.
図１は、本発明の一実施形態に係る空気電池再生装置又は空気電池システムを模式的に示す断面図である。FIG. 1 is a cross-sectional view schematically showing an air battery regenerator or an air battery system according to an embodiment of the present invention. 図２は、本発明の一実施形態に係る空気電池再生装置又は空気電池システムを模式的に示す斜視図である。FIG. 2 is a perspective view schematically showing an air battery regenerator or an air battery system according to an embodiment of the present invention.
　以下、本発明の一実施形態に係る空気電池再生装置、空気電池システム、及び空気電池の再生方法について、図面を参照しながら詳細に説明する。なお、図面の寸法比率は説明の都合上誇張されており、実際の比率とは異なる場合がある。 Hereinafter, an air battery regenerating apparatus, an air battery system, and an air battery regenerating method according to an embodiment of the present invention will be described in detail with reference to the drawings. In addition, the dimension ratio of drawing is exaggerated on account of description, and may differ from an actual ratio.
　図１は、本発明の一実施形態に係る空気電池再生装置又は空気電池システムを模式的に示す断面図である。また、図２は、本発明の一実施形態に係る空気電池再生装置又は空気電池システムを模式的に示す斜視図である。つまり、図１及び図２は、再利用可能な空気電池に適用された空気電池再生装置、又は空気電池再生装置と再利用可能な空気電池とを具備した空気電池システムを示すものである。 FIG. 1 is a cross-sectional view schematically showing an air battery regenerator or an air battery system according to an embodiment of the present invention. FIG. 2 is a perspective view schematically showing an air battery regenerator or an air battery system according to an embodiment of the present invention. That is, FIG. 1 and FIG. 2 show an air battery regeneration device applied to a reusable air battery, or an air battery system including an air battery regeneration device and a reusable air battery.
　図１及び図２に示すように、空気電池再生装置１０は、再利用可能な空気電池５０の放電が終了したときに、空気電池５０のスタック構造体５２のセル部５４内に存在するスラッジに液体を供給する液体供給手段１２を備える。また、再利用可能な空気電池５０は、複数のセル部５４から形成されるスタック構造体５２を備え、セル部５４は、１つの負極５４ａに対して２つの正極５４ｂを備えたバイセル構造と呼ばれる構造を有する。更に、図中の５１は空気流路部を示し、Ｅは残存した電解液を示す。
　なお、空気電池は、発電の際にスラッジを生成してしまうものであれば、特に限定されるものではなく、従来公知の空気極（正極）、金属極（負極）、電解液などを有する空気電池を適用することができる。
　代表的には、金属極（負極）として、マグネシウム極やマグネシウムを含むアルミニウム極を適用し、電解液として塩化ナトリウム水溶液を適用したものを挙げることができる。また、負極は交換可能なものであることが好ましいが、これに限定されるものではない。 As shown in FIGS. 1 and 2, the air battery regenerator 10 generates sludge present in the cell portion 54 of the stack structure 52 of the air battery 50 when the reusable air battery 50 is discharged. Liquid supply means 12 for supplying a liquid is provided. The reusable air battery 50 includes a stack structure 52 formed of a plurality of cell portions 54, and the cell portion 54 is referred to as a bi-cell structure including two positive electrodes 54b for one negative electrode 54a. It has a structure. Furthermore, 51 in the figure indicates the air flow path portion, and E indicates the remaining electrolyte.
The air battery is not particularly limited as long as it generates sludge during power generation, and air having a conventionally known air electrode (positive electrode), metal electrode (negative electrode), electrolyte, and the like. A battery can be applied.
Typically, as the metal electrode (negative electrode), a magnesium electrode or an aluminum electrode containing magnesium can be used, and a sodium chloride aqueous solution can be used as the electrolytic solution. Moreover, although it is preferable that a negative electrode is replaceable, it is not limited to this.
　ここで、本発明において、「再利用可能な空気電池」とは、スラッジを除去し、必要に応じて電解液の供給や負極の交換をすれば、再び所定の出力を得ることができる空気電池を意味する。 Here, in the present invention, the “reusable air battery” means an air battery that can obtain a predetermined output again by removing sludge and supplying the electrolyte or replacing the negative electrode as necessary. Means.
　また、本発明において、「空気電池の放電が終了したとき」とは、例えば、空気電池のセル部において、スラッジの堆積や電解液の枯渇、負極の消耗などの原因によって、所定の出力が得られなくなったときを意味する。 In the present invention, “when the discharge of the air battery is completed” means that, for example, in the cell portion of the air battery, a predetermined output is obtained due to sludge accumulation, electrolyte depletion, negative electrode consumption, and the like. It means when you can't.
　このような構成とすると、除去しようとするスラッジに流動性を担保させることができるため、複数のセルによって形成されるスタック構造体を殆ど分解することなく、大量のスラッジを除去することによって、再利用可能な空気電池を再生する空気電池再生装置や、空気電池再生装置と再利用可能な空気電池とを具備した空気電池システムとなる。 With such a configuration, the sludge to be removed can be ensured to have fluidity. Therefore, by removing a large amount of sludge without substantially decomposing the stack structure formed by a plurality of cells, the sludge can be reused. An air battery regeneration device that regenerates a usable air battery, or an air battery system that includes an air battery regeneration device and a reusable air battery.
　そして、再利用可能な空気電池の放電が終了したときに、スタック構造体を殆ど分解することなく、スラッジに液体を供給して流動性を担保させて、空気電池のスタック構造体のセル部内に存在する大量のスラッジを除去することにより、空気電池を再生することができ、空気電池を再利用することができる。 Then, when the discharge of the reusable air battery is completed, the liquid is supplied to the sludge to ensure fluidity without almost disassembling the stack structure, and in the cell part of the stack structure of the air battery. By removing a large amount of existing sludge, the air battery can be regenerated and the air battery can be reused.
　また、本実施形態においては、液体供給手段１２が、液体を空気電池５０の内部に設けられた液体タンク５３から取り込む管構造を有する液体取込部１２ａと、液体を液体取込部１２ａから分岐した管構造を有するセル供給部１２ｂに給送するポンプ部１２ｃとを有する。また、液体取込部１２ａの取込口ａは液体タンク５３の底部５３ａ側に配設されている。
　このような構成とすると、例えば、空気電池の内部に残存する塩化ナトリウム水溶液などの電解液をそのまま利用して、除去しようとするスラッジに流動性を担保させることができるため、複数のセルによって形成されるスタック構造体を殆ど分解することなく、大量のスラッジを除去することによって、再利用可能な空気電池を再生する空気電池再生装置や、空気電池再生装置と再利用可能な空気電池とを具備した空気電池システムとなる。 Further, in the present embodiment, the liquid supply means 12 has a liquid intake portion 12a having a tube structure for taking in liquid from a liquid tank 53 provided in the air battery 50, and the liquid is branched from the liquid intake portion 12a. A pump unit 12c that feeds the cell supply unit 12b having the above-described tube structure. The intake port a of the liquid intake portion 12 a is disposed on the bottom 53 a side of the liquid tank 53.
With such a configuration, for example, an electrolyte such as a sodium chloride aqueous solution remaining inside the air battery can be used as it is, and the sludge to be removed can be ensured to have fluidity. An air battery regenerator that regenerates a reusable air battery by removing a large amount of sludge with almost no decomposition of the stack structure, and an air battery regenerator and a reusable air battery. Air battery system.
　なお、本発明においては、このような構成を有することが好適であるが、必須ではない。図示しないが、例えば、液体供給手段が液体を空気電池の内部に設けられたセル部を連結する液絡部から取り込む液体取込部を有する構成であってもよい。
　また、図示しないが、例えば、液体供給手段が液体を空気電池の内部からセル部に供給するセル供給部を有する構成でなく、液体を空気電池の外部からセル部に供給するセル供給部を有する構成であってもよく、このとき、液体供給手段が液体を外部タンク又は空気電池再生装置の液体タンクから取り込む液体取込部を有する構成であってもよい。
　このような構成とすると、液体として水道水やスラッジを溶解する液体（例えば、クエン酸などの酸性液体を挙げることができる。）などを特に限定されることなく利用することができる。スラッジを溶解する液体を利用すると、スラッジをより効率良く除去することができる。
　なお、上述のような構成を有する場合も本発明の範囲に含まれることは言うまでもない。 In the present invention, it is preferable to have such a configuration, but it is not essential. Although not shown, for example, the liquid supply means may have a liquid intake portion that takes in a liquid from a liquid junction that connects the cell portions provided inside the air battery.
Although not shown, for example, the liquid supply means does not have a cell supply unit that supplies liquid from the inside of the air battery to the cell unit, but has a cell supply unit that supplies liquid from the outside of the air battery to the cell unit. In this case, the liquid supply means may have a liquid intake portion that takes in the liquid from an external tank or a liquid tank of the air battery regenerator.
With such a configuration, a liquid that dissolves tap water or sludge (for example, an acidic liquid such as citric acid) can be used without particular limitation. When a liquid that dissolves sludge is used, sludge can be removed more efficiently.
Needless to say, the above-described configuration is also included in the scope of the present invention.
　更に、本実施形態においては、液体供給手段１２の液体取込部１２ａには、１２ｄで示すフィルタ部が配設されている。
　このような構成とすると、ポンプ部１２ｃへのスラッジの侵入を防止することができる。
　なお、本発明においては、このような構成を有することが好適であるが、必須ではない。 Furthermore, in the present embodiment, a filter portion indicated by 12d is disposed in the liquid intake portion 12a of the liquid supply means 12.
With such a configuration, it is possible to prevent sludge from entering the pump portion 12c.
In the present invention, it is preferable to have such a configuration, but it is not essential.
　また、本実施形態においては、セル部５４を連結する液絡部５６の末端に接続され、フィルタ部１４ａとドレイン部１４ｂとポンプ部１４ｃとを有し、再利用可能な空気電池５０の放電が終了したときであって、液体供給手段１２が液体の供給を開始した後に、スラッジを除去するスラッジ除去手段１４を備える。ポンプ部１４ｃはパイプ１４ｄによりフィルタ部１４ａとドレイン部１４ｂに連結されている。
　このような構成とすると、例えば、ポンプ部の動作による吸引により、ポンプ部とパイプで連結されたフィルタ部においてスラッジを除去でき、ドレイン部において液体を除去することができるため、簡易な構成で、スラッジの目詰まりを抑制ないし防止しつつ、スラッジ除去をすることが可能となる。
　これは、通常、液絡部５６における液体流れ方向に対して垂直な断面のうち最も断面積が小さい部分（例えば、図中の５６ａで示す最狭部である。）の断面積が、スラッジ除去手段の他の接続位置として考えられるセル供給部１２ｂの注液口の断面積よりも大きいためである。
　具体的には、注液口の幅は大きくても電極間距離と同等であり、例えば直径は数ｍｍ～５ｍｍ程度である一方、液絡部における液体流れ方向に対して垂直な断面のうち最も断面積が小さい部分の断面積は、セル部の下部長さにより決定され、通常は、注液口の幅よりも長く確保される。
　なお、本発明においては、このような構成を有することが好適であるが、必須ではない。 Moreover, in this embodiment, it is connected to the terminal of the liquid junction part 56 which connects the cell part 54, has the filter part 14a, the drain part 14b, and the pump part 14c, and discharge of the reusable air battery 50 is carried out. A sludge removal means 14 is provided for removing the sludge after the liquid supply means 12 starts supplying the liquid when the liquid supply means 12 starts. The pump portion 14c is connected to the filter portion 14a and the drain portion 14b by a pipe 14d.
With such a configuration, for example, by suction by the operation of the pump unit, sludge can be removed in the filter unit connected to the pump unit by a pipe, and liquid can be removed in the drain unit. It is possible to remove sludge while suppressing or preventing sludge clogging.
This is because the cross-sectional area of the portion having the smallest cross-sectional area (for example, the narrowest portion indicated by 56a in the drawing) of the cross-section perpendicular to the liquid flow direction in the liquid junction portion 56 is usually sludge removal. It is because it is larger than the cross-sectional area of the liquid injection port of the cell supply part 12b considered as another connection position of a means.
Specifically, even if the width of the liquid injection port is large, it is equivalent to the distance between the electrodes. For example, the diameter is about several mm to 5 mm, and the most in the cross section perpendicular to the liquid flow direction in the liquid junction part. The cross-sectional area of the portion having a small cross-sectional area is determined by the lower part length of the cell part, and is usually secured longer than the width of the liquid injection port.
In the present invention, it is preferable to have such a configuration, but it is not essential.
　そして、再利用可能な空気電池の放電が終了したときであって、液体の供給を開始した後に、スラッジを除去することにより、スタック構造体を殆ど分解することなく、空気電池のスタック構造体のセル部内に存在する大量のスラッジを効率良く除去することができる。 Then, when the discharge of the reusable air battery is completed and the supply of the liquid is started, the sludge is removed, so that the stack structure is hardly decomposed, and the stack structure of the air battery is almost disassembled. A large amount of sludge existing in the cell portion can be efficiently removed.
　更に、本実施形態においては、フィルタ部１２ｄ，１４ａが、着脱可能である。
　このような構成とすると、スラッジの除去を繰り返し行うと目詰まりを起こすことがあるフィルタ部を頻繁に交換でき、効率良くスラッジを除去することができる。もちろん、フィルタ部におけるフィルタ自体を交換できるようにしてもよい。
　なお、本発明においては、このような構成を有することが好適であるが、必須ではない。 Furthermore, in this embodiment, the filter parts 12d and 14a are detachable.
With such a configuration, it is possible to frequently replace a filter portion that may cause clogging when sludge removal is repeated, and to efficiently remove sludge. Of course, you may enable it to replace | exchange the filter itself in a filter part.
In the present invention, it is preferable to have such a configuration, but it is not essential.
　また、本実施形態においては、スラッジ除去手段１４がスラッジを除去する際に、ポンプ部１４ｃが、スラッジを断続的に吸引する。
　このような構成とすることにより、まず、ポンプ部が、スラッジを除去するため吸引し、減圧することを繰り返すことによって、スラッジがフィルタ部で漉され、液体がドレイン部に溜まる。断続的に吸引を繰り返すことができるポンプとしては、例えば、ダイヤフラム型ドライ真空ポンプ（具体的には、アズワン社製ダイヤフラム型ドライ真空ポンプＤＡＰ－１５を挙げることができる。）を利用することができる。
　なお、本発明においては、このような構成を有することが好適であるが、必須ではない。 Moreover, in this embodiment, when the sludge removal means 14 removes sludge, the pump part 14c attracts | sucks sludge intermittently.
By adopting such a configuration, first, the pump unit sucks and removes pressure to remove the sludge, so that the sludge is trapped by the filter unit and the liquid is accumulated in the drain unit. As a pump capable of intermittently repeating suction, for example, a diaphragm type dry vacuum pump (specifically, a diaphragm type dry vacuum pump DAP-15 manufactured by ASONE Co., Ltd. can be used). .
In the present invention, it is preferable to have such a configuration, but it is not essential.
　更に、本実施形態においては、セル部５４内の水分量を検知する水分検知手段５５を備え、液体供給手段１２が、水分検知手段５５の検知結果に基づいて、液体の供給量を制御する。
　このような構成とすると、スラッジが最適な流動性を担保するのに必要量の液体を供給することができるため、スタック構造体を殆ど分解することなく、空気電池のスタック構造体のセル部内に存在する大量のスラッジを効率良く除去することができる。水分検知手段としては、例えば、スラッジの誘電率を測定し、これを利用した水分量センサーを適用することができる。しかしながら、これに限定されるものではなく、従来公知の水分検知手段を適用することができる。
　なお、本発明においては、このような構成を有することが好適であるが、必須ではない。 Furthermore, in the present embodiment, a moisture detection unit 55 that detects the amount of moisture in the cell unit 54 is provided, and the liquid supply unit 12 controls the supply amount of the liquid based on the detection result of the moisture detection unit 55.
With such a configuration, the sludge can supply a necessary amount of liquid to ensure optimum fluidity, so that the stack structure is hardly disassembled and is contained in the cell portion of the stack structure of the air battery. A large amount of existing sludge can be efficiently removed. As the moisture detection means, for example, a dielectric constant of sludge can be measured, and a moisture amount sensor using this can be applied. However, the present invention is not limited to this, and conventionally known moisture detecting means can be applied.
In the present invention, it is preferable to have such a configuration, but it is not essential.
　また、本実施形態においては、空気電池５０が、セル部５４に液体を供給するための供給口５４ｃを有することが好ましい。空気電池がスラッジの流動性を担保する液体を供給するための専用の供給口を有する構成とすると、例えば、供給する液体をスラッジに向けて吹き付けることができるなどのスラッジ除去に適した供給口を設計することができる。 In the present embodiment, it is preferable that the air battery 50 has a supply port 54 c for supplying a liquid to the cell portion 54. If the air battery is configured to have a dedicated supply port for supplying a liquid that ensures the fluidity of the sludge, for example, a supply port suitable for sludge removal such that the supplied liquid can be sprayed toward the sludge. Can be designed.
　更に、本実施形態においては、供給口５４ｃが、空気電池５０の負極５４ａを取り外した後に形成される負極取り外し口であることが好ましい。空気電池がスラッジの流動性を担保する液体を供給するための供給口として空気電池の負極取り外し口を利用する構成とすると、負極交換と合わせてスラッジ除去をすることができると共に、例えば、供給する液体をスラッジに向けて吹き付けることができるなどのスラッジ除去にも適した供給口を設計することができる。 Furthermore, in the present embodiment, the supply port 54c is preferably a negative electrode removal port formed after the negative electrode 54a of the air battery 50 is removed. When the air battery is configured to use the negative electrode removal port of the air battery as a supply port for supplying a liquid that ensures the fluidity of sludge, sludge can be removed together with the replacement of the negative electrode. It is possible to design a supply port suitable for sludge removal such that liquid can be sprayed toward the sludge.
　そして、再利用可能な空気電池の放電が終了したときであって、液体の供給を開始する前に、空気電池の負極を取り外すことによって液体を供給するための供給口を形成し、その供給口から液体を供給することによって、負極交換と合わせてスラッジ除去をすることができると共に、例えば、供給する液体をスラッジに向けて吹き付けることができるなどのスラッジ除去にも適した供給口を設計することができる。その結果、スタック構造体を殆ど分解することなく、空気電池のスタック構造体のセル部内に存在する大量のスラッジを効率良く除去することができる。 Then, when the discharge of the reusable air battery is completed and before the supply of the liquid is started, a supply port for supplying the liquid is formed by removing the negative electrode of the air battery, and the supply port Designing a supply port suitable for sludge removal, such as being able to remove sludge in conjunction with negative electrode replacement by supplying liquid from, and spraying the supplied liquid toward the sludge, for example Can do. As a result, it is possible to efficiently remove a large amount of sludge existing in the cell portion of the stack structure of the air battery without almost decomposing the stack structure.
　なお、図示しないが、例えば、液体の供給は、セル供給部側からでなく、液絡部側から行ってもよい。このとき、液絡部側からの液体の供給は、液体供給手段の構成を変更することにより行うことができる。 Although not shown, for example, the liquid may be supplied not from the cell supply part side but from the liquid junction part side. At this time, the liquid can be supplied from the liquid junction part side by changing the configuration of the liquid supply means.
　以上、本発明を若干の実施形態によって説明したが、本発明はこれらに限定されるものではなく、本発明の要旨の範囲内で種々の変形が可能である。 As mentioned above, although this invention was demonstrated by some embodiment, this invention is not limited to these, A various deformation | transformation is possible within the range of the summary of this invention.
　例えば、上述の実施形態においては、バイセル構造を有する空気電池に適用した場合を図示により説明したが、本発明は、フルセル構造を有する空気電池に対しても適用することができ、図示しないが、このような場合も本発明の範囲に含まれる。 For example, in the above-described embodiment, the case where the present invention is applied to an air battery having a bicell structure has been described with reference to the drawings, but the present invention can also be applied to an air battery having a full cell structure, although not illustrated. Such a case is also included in the scope of the present invention.
１０　空気電池再生装置
１２　液体供給手段
１２ａ　液体取込部
１２ｂ　セル供給部
１２ｃ　ポンプ部
１２ｄ　フィルタ部
１４　スラッジ除去手段
１４ａ　フィルタ部
１４ｂ　ドレイン部
１４ｃ　ポンプ部
１４ｄ　パイプ
１４　液体供給手段
１４ａ　液体タンク
１４ｂ　液体取込部
１４ｃ　ポンプ部
１４ｄ　フィルタ部
５０　空気電池
５１　空気流路部
５２　スタック構造体
５３　液体タンク
５３ａ　底部
５４　セル部
５４ａ　負極（金属極）
５４ｂ　正極（空気極）
５４ｃ　供給口
５５　水分検知手段
５６　液絡部
５６ａ　最狭部
　ａ　取込口
　Ｅ　電解液 DESCRIPTION OF SYMBOLS 10 Air battery regeneration apparatus 12 Liquid supply means 12a Liquid intake part 12b Cell supply part 12c Pump part 12d Filter part 14 Sludge removal means 14a Filter part 14b Drain part 14c Pump part 14d Pipe 14 Liquid supply means 14a Liquid tank 14b Liquid intake Part 14c pump part 14d filter part 50 air battery 51 air flow path part 52 stack structure 53 liquid tank 53a bottom part 54 cell part 54a negative electrode (metal electrode)
54b Positive electrode (air electrode)
54c Supply port 55 Moisture detection means 56 Liquid junction 56a Narrowest part a Intake port E Electrolyte

Claims (18)

  1. 　再利用可能な空気電池の放電が終了したときに、該空気電池のスタック構造体のセル部内に存在するスラッジに液体を供給する液体供給手段を備えたことを特徴とする空気電池再生装置。 An air battery regenerator comprising liquid supply means for supplying liquid to sludge existing in the cell portion of the stack structure of the air battery when discharge of the reusable air battery is completed.
  2. 　上記液体供給手段が、上記液体を空気電池の外部から上記セル部に供給するセル供給部を有することを特徴とする請求項１に記載の空気電池再生装置。 2. The air battery regenerator according to claim 1, wherein the liquid supply means has a cell supply part for supplying the liquid to the cell part from the outside of the air battery.
  3. 　上記液体供給手段が、上記液体を外部タンク又は当該空気電池再生装置の液体タンクから取り込む液体取込部と、該液体を該液体取込部から上記セル供給部に給送するポンプ部とを有することを特徴とする請求項２に記載の空気電池再生装置。 The liquid supply means includes a liquid intake unit that takes in the liquid from an external tank or a liquid tank of the air battery regeneration device, and a pump unit that supplies the liquid from the liquid intake unit to the cell supply unit. The air battery regenerator according to claim 2.
  4. 　上記液体供給手段が、上記液体を空気電池の内部から上記セル部に供給するセル供給部を有することを特徴とする請求項１に記載の空気電池再生装置。 2. The air battery regenerator according to claim 1, wherein the liquid supply means has a cell supply part for supplying the liquid from the inside of the air battery to the cell part.
  5. 　上記液体供給手段が、上記液体を上記空気電池の液体タンク又は上記セル部を連結する液絡部から取り込む液体取込部と、該液体を該液体取込部から上記セル供給部に給送するポンプ部とを有することを特徴とする請求項４に記載の空気電池再生装置。 The liquid supply means takes in the liquid from a liquid tank of the air battery or a liquid junction connecting the cell parts, and feeds the liquid from the liquid intake to the cell supply part. The air battery regenerator according to claim 4, further comprising a pump unit.
  6. 　上記液体取込部の取込口が上記液体タンク又は上記液絡部の底部側に配設されていることを特徴とする請求項５に記載の空気電池再生装置。 6. The air battery regenerator according to claim 5, wherein the intake port of the liquid intake part is disposed on the bottom side of the liquid tank or the liquid junction part.
  7. 　上記液体供給手段が、フィルタ部を有することを特徴とする請求項４～６のいずれか１つの項に記載の空気電池再生装置。 The air battery regenerator according to any one of claims 4 to 6, wherein the liquid supply means has a filter section.
  8. 　上記セル部を連結する液絡部に接続され、フィルタ部とドレイン部とポンプ部とを有するスラッジ除去手段を備え、
    　上記スラッジ除去手段が、再利用可能な空気電池の放電が終了したときであって、上記液体供給手段が上記液体の供給を開始した後に、上記スラッジを除去する
    ことを特徴とする請求項１～７のいずれか１つの項に記載の空気電池再生装置。     Connected to the liquid junction connecting the cell part, comprising a sludge removing means having a filter part, a drain part and a pump part,
    The sludge removing means removes the sludge when the discharge of the reusable air battery is completed and the liquid supply means starts supplying the liquid. The air battery regenerator according to any one of items 7 to 9.
  9. 　上記セル部内の水分量を検知する水分検知手段を備え、
    　上記液体供給手段が、上記水分検知手段の検知結果に基づいて、上記液体の供給量を制御する
    ことを特徴とする請求項１～８のいずれか１つの項に記載の空気電池再生装置。     Comprising water detecting means for detecting the amount of water in the cell part,
    The air battery regenerating apparatus according to any one of claims 1 to 8, wherein the liquid supply means controls the supply amount of the liquid based on a detection result of the moisture detection means.
  10. 　上記液体として上記空気電池の外部から供給される液体を利用することを特徴とする請求項１に記載の空気電池再生装置。 2. The air battery regenerator according to claim 1, wherein a liquid supplied from the outside of the air battery is used as the liquid.
  11. 　上記液体として上記空気電池の内部から供給される液体を利用することを特徴とする請求項１に記載の空気電池再生装置。 The air battery regeneration device according to claim 1, wherein a liquid supplied from the inside of the air battery is used as the liquid.
  12. 　上記液体として上記スラッジを溶解する液体を利用することを特徴とする請求項１０又は１１に記載の空気電池再生装置。 The air battery regeneration device according to claim 10 or 11, wherein a liquid that dissolves the sludge is used as the liquid.
  13. 　請求項１～１２のいずれか１つの項に記載の空気電池再生装置と、再利用可能な空気電池とを具備したことを特徴とする空気電池システム。 An air battery system comprising the air battery regenerator according to any one of claims 1 to 12 and a reusable air battery.
  14. 　上記空気電池が、上記セル部に上記液体を供給するための供給口を有することを特徴とする請求項１３に記載の空気電池システム。 The air battery system according to claim 13, wherein the air battery has a supply port for supplying the liquid to the cell part.
  15. 　上記供給口が、上記空気電池の負極取り外し口であることを特徴とする請求項１４に記載の空気電池システム。 15. The air battery system according to claim 14, wherein the supply port is a negative electrode removal port of the air battery.
  16. 　再利用可能な空気電池の放電が終了したときに、該空気電池のスタック構造体のセル部内に存在するスラッジに液体を供給することを特徴とする空気電池の再生方法。 A method for regenerating an air battery, comprising supplying a liquid to sludge present in a cell portion of the stack structure of the air battery when discharge of the reusable air battery is completed.
  17. 　再利用可能な空気電池の放電が終了したときであって、上記液体の供給を開始した後に、上記スラッジを除去することを特徴とする請求項１６に記載の空気電池の再生方法。 The method of regenerating an air battery according to claim 16, wherein the sludge is removed when the discharge of the reusable air battery is completed and the supply of the liquid is started.
  18. 　再利用可能な空気電池の放電が終了したときであって、上記液体の供給を開始する前に、上記空気電池の負極を取り外すことによって該液体を供給するための供給口を形成することを特徴とする請求項１６又は１７に記載の空気電池の再生方法。 A discharge port for supplying the liquid is formed by removing the negative electrode of the air battery when the discharge of the reusable air battery is completed and before the supply of the liquid is started. The method for regenerating an air battery according to claim 16 or 17.
PCT/JP2014/059001 2014-03-27 2014-03-27 Air-battery regeneration device, air-battery system, and air-battery regeneration method WO2015145693A1 (en)

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