• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    To improve the energy efficiency of a cell of a redox flow battery, it is desirable that the electrolyte fluid flow largely through the electrode and that there are no flow paths or leaks around the electrode. To achieve this, a frame of a cell of a redox flow battery with an opening 8 bounded by an edge 6 is proposed, wherein at the edge 6 a first flow blocker 11 is arranged, which extends into the opening 8 in.
    公开号:AT510723A4
    申请号:T2106/2010
    申请日:2010-12-21
    公开日:2012-06-15
    发明作者:Martin Harrer；Herbert Bucsich
    申请人:Cellstrom Gmbh；
    IPC主号:
    专利说明:

    FW-3382 AT
    Frame of a cell of a redox flow battery
    The subject invention relates to a frame of a cell of a redox flow battery having an opening bounded by an edge and a half cell and a redox flow battery having such a frame.
    A known embodiment of a redox flow battery 50 or a stack 32 of a redox flow battery 50 is shown in FIGS. 3 and 4. The cells 30 of such a stack 32 generally consist of two juxtaposed half-cells 30a, 30b, wherein each half-cell 30a, 30b is formed by a respective frame 1, which has an opening 8, in each of which an electrode 20 is arranged and the half cell 30a, 30b are separated at least in the region of the opening 8 by a semi-permeable membrane 24. The first half cell 30a of a cell 30 is flowed through by a first electrolyte liquid and the second half cell 30b of this cell by a second electrolyte liquid, which is generated by electro-chemical processes, electrical current, which are tapped via electrical connections 48 at the end plates 46 of the stack 32 can. For some types of redox flow batteries 50, e.g. a vanadium redox flow battery or a vanadium / polyhalide battery, the two electrolyte liquids are chemically substantially similar or have only a different oxidation state (e.g., V2 * and V3 VO2 + and VO2 +). This process can also be reversed, with which the electrolyte liquid (or the battery) is charged. Several such cells 30 are combined in a redox flow battery 50 into a stack 32 by arranging the individual cells 30 side by side to achieve a higher power or voltage. The individual cells 30 are separated from each other by bipolar plates 22. The two electrolyte liquids with different state of charge are supplied via connections 47 in the end plates 46 and discharged and performed through holes 2, 3 in the frame 1 through the cells 30. The cells 30 are arranged between the two end plates 46 and the pressure plates 45 resting thereon and can be pressed against each other by passing bolts 40, which are braced by means of nuts 42, washers 43 and springs 41. In a redox flow battery 50 also several stacks 32 can be summarized, wherein a group of stacks 32, which are electrically connected in series, are also called strings and several strings can be operated electrically in parallel. Such arrangements are well known in various designs.
    To increase the efficiency or the energy efficiency of a redox flow battery, it would of course be desirable that the entire circulated electrolyte liquid flows through the electrode and there are no leaks or no electrolyte liquid can flow past the electrode. Here are, in addition to leaks, especially the areas between -1-
    FW-3382 AT see electrode and edge of the frame or edge of the opening problematic, since it has been found that a flow channel can form between the electrode and the frame and thus the electrolyte liquid flows past the electrode and unused through the cell.
    It is therefore an object of the present invention to provide a frame of a cell of a redox flow battery, which improves the utilization of the circulated through the cell electrolyte liquid.
    This object is achieved in that a flow blocker is arranged at the edge of the opening, which extends into the opening and, in the assembled state with an electrode in the opening, is pressed into the electrode. Thus, the formation of a flow channel between the opening and the electrode is suppressed and the electrolyte liquid is forced to flow through the electrode, which increases the efficiency or energy efficiency of the cell and thus the redox flow-through battery.
    A further improvement results when a distribution channel for supplying or discharging electrolyte liquid to the cell is provided in the frame and the distribution channel opens into the opening, wherein in the distribution channel in the region of its inflow to Elektrolytflüssigkeitszufuhr in the cell or Ausströmbereichs to Elektrolytflüssigkeitsabfuhr another flow blocker is arranged, which limits the distribution channel to the opening. Thus, the electrolyte liquid is forced to flow first into the distribution channel, where it is distributed and from where it can flow further into the electrode. In this way, it is prevented that electrolyte fluid can flow past the electrode in the inflow or outflow region.
    Most effective is the formation of a flow channel between the opening and the electrode is prevented when a flow blocker extends over the entire height of the opening.
    The present invention will be described below with reference to the schematic, non-limiting Figures 1 to 5, each showing preferred embodiments. It shows
    1 is a schematic representation of a frame according to the invention in a basic view,
    2 shows a detailed view of the inflow region of the electrolyte liquid supply, and FIGS. 3 and 4 show a view of a stack of a redox flow battery or a detailed view thereof. -2- • «« «« «* · ··« • * t »* ·» · *
    FW-3382 AT «· V« »· l * ··· · I» ¥ · «* · · · · · * · * · t 4 ·
    For the description of the features of a frame 1 according to the invention, reference is made below to FIGS. 1 and 2. The frame 1 is made of an elastomer, e.g. a polyolefinic thermoplastic elastomer (TPE or TPO), e.g. Santoprene, or a thermoplastic vulcanate (TPV), manufactured, in particular in an injection molding process.
    The frame material has e.g. a hardness in the range of 40-95 Shore A, preferably 60-75 Shore A, on. In the frame 1 is provided in its center an opening 8 in which an electrode 20, e.g. a mat of carbon fibers, can be arranged (see Fig. 4), around the opening 8 around a recess 7 may be provided, in which a bipolar plate 22 can be arranged (see Fig. 4). Such a frame 1 with electrode 20 forms a half cell 30a, 30b of a cell 30 of a stack 32 of a redox flow battery 50, as described above.
    The frame 1 further has through holes 2a, 3a, through which electrolyte liquid supply or electrolyte liquid discharge of the cells 30 electrolyte fluid is pumped through the stack 32. The bore 2a serves, for example, as a supply and the bore 3a as a discharge for a first electrolyte liquid of a half-cell. A second electrolyte liquid is passed through the bores 2b, 3b passing through the frame 1. In an end face S of the frame 1 channels 4, 5 are arranged, wherein a channel 4 is connected to one end to the electrolyte liquid supply to the feed hole 2a and forms a feed channel. The second channel 5 is arranged diametrically opposite and connected to the drainage hole 3a for the removal of electrolyte liquid and forms a discharge channel. The channels 4, 5 can also be arranged in the part of the end face S provided as the sealing surface. The following description of the channel 4 for the supply applies equally to the channel 5 for the discharge of the electrolyte liquid. However, it is of course also possible to design or arrange the supply and discharge channel differently.
    The channel 4 is open to the end face S and advantageously extends in a plane parallel to the end face S and opens into a distribution channel 9, which is arranged along one side of the opening 8 and limited to the opening 8 through a plurality of juxtaposed webs 10 is. The webs 10 preferably extend from the bottom of the distribution channel 9 to the upper edge of the recess 7 or to the end face S, but may also extend over only a part of this height. The webs 10 are intended to substantially prevent the electrode from slipping or being deformed into the distribution channel 9, which would cause uneven distribution of the electrolyte liquid, and that material washed out of the electrode, such as e.g. Fibers, get into the electrolyte fluid circuit or lay the channel 4.
    The electrolyte liquid is thus supplied via the supply bore 2a, passes from there via the channel 4 into the distribution channel 9, is uniformly distributed there and continues to flow in the -3-
    The electrolyte liquid flows through the electrode 20, is collected on the opposite side via a further, preferably opposite distribution channel 9 and is discharged via the discharge channel 5 and the discharge hole 3a again. 5 To prevent or largely prevent that between frame 1, specifically the edge 6 of the opening 8, and the electrode 20, which is arranged in the assembled state of the stack 32 in the opening 8 (see Fig. 4) a Flow channel is formed in the direction of the flow of the electrolyte liquid through the cell 30, formed on the edge 6 of the opening 8 as projections formed flow blocker 11, as shown in Fig. 1 and 2 10. These flow blockers 11 preferably extend over the entire height of the opening 8 and from the edge 6 into the opening 8, ie transversely to the direction of the flow of the electrolyte liquid through the cell 30 or half cell 30a, 30b.
    In the arrangement of the electrode 20 in the frame 1, which normally completely fills the opening 8, the flow blockers 11 are pressed into the electrode 20 and prevent a flow of electrolyte fluid between edge 6 and electrode 20 as far as possible.
    A further improvement of the suppression of the formation of a flow channel between the frame and the electrode can be achieved if the edge 6 in the inflow region of the channel 4 extends from the edge 6 into the distribution channel 9 in order to prevent the electrolyte liquid in the inflow region directly at the electrode 20 can flow by. For this purpose, a further, designed as a projection, flow blocker 16 is provided at the edge 6, which extends into the distribution channel and the distribution channel 9 is limited in the inflow region in the direction of the opening 8. Thus, the electrolyte liquid is forced to flow first into the distribution channel 9 and can only get from there into the opening 8 and into the electrode 20. Such another flow blocker 16 may also be arranged at the outflow region 25 of the channel 5. -4-
    权利要求:
    Claims (5)
    [1]
    1. Frame of a cell of a redox flow battery with an opening (8) which is delimited by an edge (6), characterized in that at the edge (6) a first flow blocker (11) is arranged, the extends into the opening (8).
    [2]
    2. Frame according to claim 1, characterized in that in the frame (1) a distribution channel (9) is provided for supplying or discharging electrolyte liquid to the cell and the distribution channel (9) opens into the opening (8), wherein in the distribution channel ( 8) a second flow blocker (16) is arranged in the area of its inflow region for supplying electrolyte liquid into the cell or of the outflow region for discharging the electrolyte liquid, which delimits the distribution channel (9) towards the opening (8).
    [3]
    3. Frame according to claim 1 or 2, characterized in that a flow blocker (11, 16) extends over the entire height of the opening (8).
    [4]
    4. half-cell of a redox flow battery consisting of a frame (1) according to ei-15 nem of claims 1 to 3, wherein in the opening (8) of the frame (1) an electrode (20) is arranged, in which the first flow blocker (11) is pressed into it.
    [5]
    5. redox flow battery with a half cell (30 a, 30 b) consisting of a frame (1) according to one of claims 1 to 3, wherein in the opening (8) of the frame (1) an electrode (20) is arranged, in the the first flow blocker (11) is pressed in. 20 -5-
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    CN102569862A|2012-07-11|
    US8815428B2|2014-08-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4732823A|1984-12-10|1988-03-22|Kabushiki Kaisha Meidensha|Electrolyte flowing construction for electrolyte circulation-type cell stack secondary battery|
    JP2006324129A|2005-05-19|2006-11-30|Sumitomo Electric Ind Ltd|Redox flow battery and its cell|
    JPS57113565A|1981-01-06|1982-07-15|Meidensha Electric Mfg Co Ltd|Diaphragm supporter for battery|
    JP2005228645A|2004-02-13|2005-08-25|Sumitomo Electric Ind Ltd|Retaining structure of redox flow battery cell, battery, and electrode|
    AT501903B1|2005-11-08|2006-12-15|En O De Energy On Demand Produ|FRAME FOR A CELL OF A REACTOR OF A REDOX FLOW BATTERY|US7820321B2|2008-07-07|2010-10-26|Enervault Corporation|Redox flow battery system for distributed energy storage|
    US8785023B2|2008-07-07|2014-07-22|Enervault Corparation|Cascade redox flow battery systems|
    US8980484B2|2011-03-29|2015-03-17|Enervault Corporation|Monitoring electrolyte concentrations in redox flow battery systems|
    US8916281B2|2011-03-29|2014-12-23|Enervault Corporation|Rebalancing electrolytes in redox flow battery systems|
    ES2733715T3|2012-11-30|2019-12-02|Hydraredox Tech Holdings Ltd|Mounting support plate-electrode-membrane for an electrochemical redox flow energy storage cell|
    CN102969517A|2012-12-10|2013-03-13|贵州省岑巩县银峰矿业有限公司|Liquid flow frame device for flow battery and electric pile formed by liquid flow frame device|
    US9680174B2|2012-12-14|2017-06-13|Hydraredox Technologies Holdings Ltd.|Redox flow battery system and method of controlling it|
    AT513834B1|2013-03-01|2014-08-15|Cellstrom Gmbh|Elastomer end frame of a redox flow battery|
    DE102013009629B4|2013-06-10|2019-09-12|Carl Freudenberg Kg|Electrode module and arrangement with electrode modules|
    KR101480871B1|2013-08-06|2015-01-13|에너지와공조|Frame for uniformly supplying electrolyte to improve cell-efficiency and redox flow battery having the frame|
    CN103390759B|2013-08-13|2014-09-17|湖南省银峰新能源有限公司|Liquid flow frame structure for flow cell and electric pile formed by flow cell|
    CN103441290B|2013-09-06|2016-04-13|大连融科储能技术发展有限公司|A kind of electrode frame for all-vanadium flow battery|
    CN103647091B|2013-12-06|2016-03-02|中国东方电气集团有限公司|Bipolar plate assembly and flow battery|
    EP3217460B1|2014-11-06|2018-06-06|Sumitomo Electric Industries, Ltd.|Battery cell and redox flow battery|
    AU2015344623B2|2014-11-06|2020-06-18|Sumitomo Electric Industries, Ltd.|Battery cell and redox flow battery|
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    KR101742486B1|2015-09-02|2017-06-02|전자부품연구원|Flow flame having variable channel and redox flow secondary battery comprising the same|
    CN108370055A|2016-11-16|2018-08-03|住友电气工业株式会社|Unit framework, stack of cells and redox flow batteries|
    EP3544103A4|2016-11-16|2019-12-18|Sumitomo Electric Industries, Ltd.|Cell frame, cell stack, and redox flow battery|
    JP6804332B2|2017-02-27|2020-12-23|ユナイテッド テクノロジーズ コーポレイションＵｎｉｔｅｄ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏｒｐｏｒａｔｉｏｎ|Electrochemical devices and methods of controlling corrosion|
    US20200220194A1|2017-09-01|2020-07-09|Itn Energy Systems, Inc.|Segmented frames for redox flow batteries|
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    法律状态:
    2014-09-15| PC| Change of the owner|Owner name: CELLSTROM GMBH, AT Effective date: 20140723 |
    2016-11-15| PC| Change of the owner|Owner name: GILDEMEISTER ENERGY STORAGE GMBH, AT Effective date: 20161005 |
    2018-08-15| MM01| Lapse because of not paying annual fees|Effective date: 20171221 |
    2018-12-15| PC| Change of the owner|Owner name: ENEROX GMBH, AT Effective date: 20181018 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA2106/2010A|AT510723B1|2010-12-21|2010-12-21|FRAME OF A CELL OF A REDOX FLOW BATTERY|ATA2106/2010A| AT510723B1|2010-12-21|2010-12-21|FRAME OF A CELL OF A REDOX FLOW BATTERY|
    US13/328,612| US8815428B2|2010-12-21|2011-12-16|Frame of a cell of a redox flow battery|
    CN201110426534.7A| CN102569862B|2010-12-21|2011-12-19|The battery frame of redox flow batteries group|
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