JP2019508857A - レドックスフロー電池用電解液貯蔵部及びこれを含むバナジウムレドックスフロー電池 - Google Patents
レドックスフロー電池用電解液貯蔵部及びこれを含むバナジウムレドックスフロー電池 Download PDFInfo
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- 238000003860 storage Methods 0.000 claims abstract description 110
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Classifications
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04276—Arrangements for managing the electrolyte stream, e.g. heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04776—Pressure; Flow at auxiliary devices, e.g. reformer, compressor, burner
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04791—Concentration; Density
- H01M8/0482—Concentration; Density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/20—Indirect fuel cells, e.g. fuel cells with redox couple being irreversible
-
- 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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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuel Cell (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
しかし、バナジウムレドックスフロー電池の商用化のためには、バナジウムイオンの分離膜透過(cross−over)現象、負極での水素発生、そして空気露出時にバナジウムイオンの酸化反応などで発生する電池容量の低下現象を改善できる方案が必要な実情である。
したがって、本発明の目的は、レドックスフロー電池用電解液貯蔵部を提供することである。
前記正極電解液貯蔵タンク及び負極電解液貯蔵タンクのそれぞれは、一側端部で垂直方向に突出された水位検知管を含み、この時、前記水位検知管は内側に水位検知センサーを備え、
前記電解液貯蔵部は、各タンク内の電解液の水位を同一に調節できるように中央端部にポンプを備える「∩」字形電解液移送管を含み、この時、前記移送管の一側及び他側末端は、各タンクの水位検知管内に側壁から所定距離が離隔された状態で挿入して配置され、
前記各タンク内の電解液の水位を水位検知センサーで測定し、これによって前記ポンプが自動に作動できるように電気的制御部を含むことを特徴とする電解液貯蔵部を提供する。
貯蔵タンクの内部圧力によって前記チェックバルブが自動で動作できるように、前記圧力センサーとチェックバルブが電気的に連結された電気的制御部を含むことができる。
前記A:Bは、2:1ないし100:1であってもよい。
本明細書において、他に断らない限り、「バナジウムイオン」または「イオン」は、バナジウムカチオンを意味する。
図1は、レドックスフロー電池100の一般的な構造を概略的に図示した図面である。
前記正極電解液貯蔵タンク及び負極電解液貯蔵タンクのそれぞれは、一側端部で垂直方向に突出された水位検知管を含み、この時、前記水位検知管は内側に水位検知センサーを備え、
前記電解液貯蔵部は、各タンク内の電解液の水位を同一に調節できるように、中央端部にポンプを備える「∩」字形電解液移送管を含み、この時、前記移送管の一側及び他側末端は、各タンクの水位検知管内に側壁から所定距離が離隔された状態で挿入して配置され、
前記各タンク内の電解液の水位を水位検知センサーで測定し、これによって前記ポンプが自動に作動できるように電気的制御部を含むことを特徴とする電解液貯蔵部を提供する。
本発明の電解液貯蔵部200によって具現される電解液の自然的再生(passive regeneration)は、電池駆動中にバナジウムイオンの分離膜透過現象によって発生した一側の貯蔵タンクの電解液増加分を直ちに他側の貯蔵タンクに移送して正極及び負極電解液の水位を一定に維持させることによって自然に電解液が再生される方式であって、別途の電気、化学的エネルギーを要する既存の強制的再生(active regeneration)と区別される。
本発明によるバナジウムレドックスフロー電池は電解液貯蔵部であって、本発明による電解液貯蔵部を使用する。
製造例1:バナジウムレドックスフロー電池の製造
前記製造例1の電池を実施例1として、これに対する電池性能評価を実施した。この時、比較例では前記製造例1と同じ電池構成を有するが、電池駆動中に電解液の移送がないレドックスフロー電池を使用した。電池駆動条件は次のとおりである。
充放電電流密度:100mA/cm2、定電流(constant current)
充放電電圧:0.8〜1.7V
移送管内のポンプの電解液供給速度:cm2当たり0.3ml/min
11、21:ポンプ
12:正極電解液
20:負極電解液貯蔵タンク
22:負極電解液
30:電源/負荷
31:正極
32:負極
33:分離膜
14、24:水位検知管
15、25:水位検知センサー
16、26:電解液貯蔵タンクの上部
17、27:チェックバルブ
18:正極電解液流入口
19:正極電解液流出口
28:負極電解液流入口
29:負極電解液流出口
100:レドックスフロー電池
200:電解液貯蔵部
Claims (6)
- 正極電解液貯蔵タンク及び負極電解液貯蔵タンクを含むレドックスフロー電池用の電解液貯蔵部であって、
前記正極電解液貯蔵タンク及び負極電解液貯蔵タンクのそれぞれは、一側端部で垂直方向に突出された水位検知管を含み、前記水位検知管は内側に水位検知センサーを備え、
前記電解液貯蔵部は、各タンク内の電解液の水位を同一に調節できるように中央端部にポンプを備える「∩」字形の電解液移送管を含み、
前記電解液移送管の一側及び他側末端は、各タンクの水位検知管内に側壁から所定距離が離隔された状態で挿入して配置され、
前記各タンク内の電解液の水位を水位検知センサーで測定し、これによって前記ポンプが自動に作動できるように電気的制御部を含むことを特徴とする電解液貯蔵部。 - 前記正極電解液貯蔵タンク及び負極電解液貯蔵タンクのうち、少なくとも1以上は、上部にチェックバルブをさらに含むことを特徴とする、請求項1に記載の電解液貯蔵部。
- 前記正極電解液貯蔵タンク及び負極電解液貯蔵タンクのうち、少なくとも1以上は、内部に圧力センサーをさらに含み、
貯蔵タンクの内部圧力によって前記チェックバルブが自動に動作できるように、前記圧力センサーとチェックバルブが電気的に連結された電気的制御部を含むことを特徴とする、請求項2に記載の電解液貯蔵部。 - 前記チェックバルブは、リフトチェックバルブ、スウィングチェックバルブ、ボールチェックバルブ、ねじ締めチェックバルブ、バタフライチェックバルブ、デュアルプレートチェックバルブ、シングルプレートチェックバルブ、傾斜ディスクチェックバルブ、またはフットバルブからなる群から選択される1種であることを特徴とする、請求項2に記載の電解液貯蔵部。
- 前記正極電解液貯蔵タンク及び負極電解液貯蔵タンクそれぞれの断面積をA、各電解液貯蔵タンクの水位検知管の断面積をBとする時、
前記A:Bは、2:1ないし100:1であることを特徴とする、請求項1に記載の電解液貯蔵部。 - 請求項1ないし請求項5のいずれか一項に記載の電解液貯蔵部を含む、バナジウムレドックスフロー電池。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020160132669A KR102081768B1 (ko) | 2016-10-13 | 2016-10-13 | 레독스 플로우 전지용 전해액 저장부 및 이를 포함하는 바나듐 레독스 플로우 전지 |
KR10-2016-0132669 | 2016-10-13 | ||
PCT/KR2017/010370 WO2018070683A1 (ko) | 2016-10-13 | 2017-09-21 | 레독스 플로우 전지용 전해액 저장부 및 이를 포함하는 바나듐 레독스 플로우 전지 |
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CN116075956A (zh) * | 2020-09-23 | 2023-05-05 | 住友电气工业株式会社 | 氧化还原液流电池 |
CN116706346B (zh) * | 2023-08-02 | 2023-10-13 | 德阳市东新机电有限责任公司 | 一种铝燃料电池发电系统及方法 |
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EP3419095A1 (en) | 2018-12-26 |
EP3419095B1 (en) | 2022-05-04 |
KR20180040852A (ko) | 2018-04-23 |
EP3419095A4 (en) | 2019-06-12 |
US20190103622A1 (en) | 2019-04-04 |
CN109075368B (zh) | 2021-11-19 |
KR102081768B1 (ko) | 2020-04-23 |
JP6821238B2 (ja) | 2021-01-27 |
CN109075368A (zh) | 2018-12-21 |
WO2018070683A1 (ko) | 2018-04-19 |
US10763532B2 (en) | 2020-09-01 |
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