CN202651267U - Porous electrode and flow battery, battery stack and battery system comprising same - Google Patents
Porous electrode and flow battery, battery stack and battery system comprising same Download PDFInfo
- Publication number
- CN202651267U CN202651267U CN2012203129398U CN201220312939U CN202651267U CN 202651267 U CN202651267 U CN 202651267U CN 2012203129398 U CN2012203129398 U CN 2012203129398U CN 201220312939 U CN201220312939 U CN 201220312939U CN 202651267 U CN202651267 U CN 202651267U
- Authority
- CN
- China
- Prior art keywords
- flow
- guiding channel
- porous electrode
- guiding
- channels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 63
- 238000005868 electrolysis reaction Methods 0.000 claims description 16
- 230000004888 barrier function Effects 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 7
- 239000003792 electrolyte Substances 0.000 abstract description 64
- 239000012530 fluid Substances 0.000 abstract description 9
- 230000010287 polarization Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 4
- 229910052720 vanadium Inorganic materials 0.000 description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910001456 vanadium ion Inorganic materials 0.000 description 2
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015994 miscarriage Diseases 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- VYMDGNCVAMGZFE-UHFFFAOYSA-N phenylbutazonum Chemical compound O=C1C(CCCC)C(=O)N(C=2C=CC=CC=2)N1C1=CC=CC=C1 VYMDGNCVAMGZFE-UHFFFAOYSA-N 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 208000000995 spontaneous abortion Diseases 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model discloses a porous electrode and a flow battery, a flow battery stack and a flow battery system comprising the same. Flow guide channels in which electrolyte flows are formed in the porous electrode and are communicated with one another in the thickness direction of the porous electrode. As the flow guide channels in which the electrolyte flows are formed in the porous electrode, fluid flow resistance caused by the porous electrode to the flowing of the electrolyte is reduced under the flow guidance of the flow guide channels, and fluid flow differential pressure which is required by the flowing of the electrolyte is effectively reduced; and the electrolyte can be uniformly permeated into the porous electrodes on two sides of each flow guide channel when flowing in the flow guide channels, so that the uniformity of the flowing of the electrolyte is improved, the concentration polarization which is caused by nonuniform flowing of the electrolyte is reduced, and the voltage efficiency of the flow battery system is improved.
Description
Technical field
The utility model relates to the flow battery field, relates in particular to a kind of porous electrode and contains its flow battery, liquid stream battery stack and flow battery system.
Background technology
Vanadium redox battery is that a kind of vanadium ion electrolyte with different valence state carries out redox electrochemical reaction appts, can realize efficiently the mutual conversion between chemical energy and the electric energy.Such battery has long service life, and energy conversion efficiency is high, and fail safe is good, and advantages of environment protection can be used for wind power generation and the supporting extensive energy-storage system of photovoltaic generation, is one of electrical network peak load shifting, balanced loaded main selection.Therefore, vanadium redox battery becomes the emphasis that large capacity energy-storage battery is studied gradually in recent years.
Vanadium redox battery is respectively with vanadium ion V
2+/ V
3+And V
4+/ V
5+Both positive and negative polarity oxidation-reduction pair as battery, both positive and negative polarity electrolyte is stored in respectively in two fluid reservoirs, drive active electrolyte by acidproof liquor pump and be back to again to reacting environment's (battery pile) and form the circulating fluid loop in the fluid reservoir, to realize charge and discharge process.In the vanadium redox battery energy-storage system, the quality of stack performance is determining the charge-discharge performance of whole system, especially discharges and recharges power and efficient.Battery pile is to stack successively compression by the multi-disc monocell, is in series.Wherein, the composition of monolithic flow battery as shown in Figure 1.1 is liquid flow frame, and 2 is collector plate, and 3 is porous electrode, and 4 is barrier film, and each assembly forms the flow battery of monolithic, by the stacking composition battery pile 6 of N flow battery.As shown in Figure 2, by battery pile 6, anodal fluid reservoir 71, negative pole fluid reservoir 72, anodal circulation fluid road liquor pump 81, negative pole circulation fluid road liquor pump 82, and anodal liquid line 91,101 and negative pole liquid line 92,102 consist of flow battery systems.
The general infiltration mass transfer by porous electrode that flows of existing liquid stream battery stack electrolyte inside, the type of flow of this electrolyte cause the interior liquid drift angle of battery pile very large on the one hand, the pump exorbitant expenditure, thus make the flow battery system Efficiency Decreasing; On the other hand, that the battery pile electrolyte inside flows is inhomogeneous, concentration polarization is larger, causes the pile internal loss, thereby the voltage efficiency of battery is reduced.
The utility model content
The utility model provides a kind of porous electrode and has contained its flow battery, liquid stream battery stack and flow battery system, and it is large to be used for solving the interior liquid drift angle of liquid stream battery stack of the prior art, the problem that electrolyte flow is inhomogeneous.
According to an aspect of the present utility model, a kind of porous electrode is provided, be provided with the flow-guiding channel that electrolysis liquid flows in the porous electrode, flow-guiding channel connects at the thickness direction of porous electrode.
Further, above-mentioned flow-guiding channel is the horizontal flow-guiding channel that extends transversely or the vertical flow-guiding channel that extends longitudinally.
Further, above-mentioned flow-guiding channel is one or more.
Further, above-mentioned flow-guiding channel is one, and flow-guiding channel is arranged on the center line of porous electrode.
Further, above-mentioned flow-guiding channel is a plurality of, and the arrangement mode of flow-guiding channel is: A, each flow-guiding channel be arranged in parallel, and the two ends of each flow-guiding channel are to identical with the distance at the edge of the vertical porous electrode of flow-guiding channel bearing of trend; Perhaps B, each flow-guiding channel be arranged in parallel, and adjacent flow-guiding channel is staggered; Perhaps C, flow-guiding channel are divided into a plurality of flow-guiding channel groups that be arranged in parallel, comprise a plurality of flow-guiding channels in the flow-guiding channel group, and flow-guiding channel is staggered in the adjacent flow-guiding channel group; Perhaps D, flow-guiding channel are divided into a plurality of flow-guiding channel groups that be arranged in parallel, comprise a plurality of flow-guiding channels in the flow-guiding channel group, and staggered between each flow-guiding channel in each flow-guiding channel group.
Further, above-mentioned flow-guiding channel comprises edge horizontal or the first flow-guiding channel of longitudinal extension and the second flow-guiding channel that extends along the bearing of trend perpendicular to the first flow-guiding channel, and the first flow-guiding channel and the second flow-guiding channel are not communicated with.
Further, above-mentioned the first flow-guiding channel is one or more, and the second flow-guiding channel is one or more.
Further, the arrangement mode of above-mentioned flow-guiding channel is: E, porous electrode are provided with a plurality of the first flow-guiding channels, and these a plurality of first flow-guiding channels are divided into a plurality of the first flow-guiding channel groups, the at least one the second flow-guiding channels are set between adjacent two the first flow-guiding channel groups, comprise a plurality of the first flow-guiding channels that be arranged in parallel in each first flow-guiding channel group, and the first adjacent flow-guiding channel is staggered; Perhaps F, font flow-guiding channel group that porous electrode is provided with one or more " T ", " T " font flow-guiding channel group comprises first flow-guiding channel and second flow-guiding channel towards this first flow-guiding channel middle part, the second flow-guiding channel in " T " font flow-guiding channel group is not communicated with the first flow-guiding channel, when " T " font flow-guiding channel group when being a plurality of, in two adjacent " T " font flow-guiding channel groups, two the second flow-guiding channels are parallel to each other, two the first flow-guiding channels are positioned at the difference end of corresponding the second flow-guiding channel, and each adjacent " T " font flow-guiding channel group is not communicated with each other; Perhaps G, porous electrode are provided with one or more " I " font flow-guiding channel group, " I " font flow-guiding channel group comprises that parallel two the first flow-guiding channels that are oppositely arranged and two ends are respectively towards second flow-guiding channel at two the first flow-guiding channels middle parts, the second flow-guiding channel is not communicated with the first flow-guiding channel, when " I " font flow-guiding channel group when being a plurality of, and each " I " font flow-guiding channel group is not communicated with each other.
Further, above-mentioned flow-guiding channel comprises edge horizontal or the first flow-guiding channel of longitudinal extension and the second flow-guiding channel that extends along the bearing of trend perpendicular to the first flow-guiding channel, and the first flow-guiding channel and the second flow-guiding channel are connected.
Further, the arrangement mode of above-mentioned flow-guiding channel comprises: H, porous electrode are provided with one or more " Z " font flow-guiding channel group, " Z " font flow-guiding channel group comprises two the first flow-guiding channels and second flow-guiding channel, two the first flow-guiding channels are separately positioned on the both sides of the second flow-guiding channel, and two the first flow-guiding channels respectively from the second flow-guiding channel on different end be connected, when " Z " font flow-guiding channel group when being a plurality of, and each " Z " font flow-guiding channel group is not communicated with each other.
Further, above-mentioned porous electrode is rectangular, comprise that relative first side is connected relative the 3rd side and the four side that connects first side and second side with the second side, end towards the first side of the 3rd side forms the first isolation projection towards the outside of the 3rd side projection, and the end towards the second side of four side forms the second isolation projection towards the outside of four side projection.
According on the other hand of the present utility model, a kind of flow battery also is provided, comprise liquid flow frame, collector plate, porous electrode and barrier film, porous electrode is embedded in the cavity of liquid flow frame, collector plate fits in a side of porous electrode, barrier film fits in porous electrode away from a side of collector plate, the inlet and the liquid outlet that have the inflow of electrolysis liquid or outflow porous electrode in two frames of liquid flow frame opposing parallel, has laterally the first transverse flow channels of circulation of electrolysis liquid between inlet and the porous electrode, have laterally the second transverse flow channels of circulation of electrolysis liquid between liquid outlet and the porous electrode, this porous electrode is above-mentioned porous electrode; Perhaps porous electrode comprises at least two porous electrode pieces that are fitted on the collector plate, forms the first horizontal flow-guiding channel between the adjacent porous electrode piece, and the first horizontal flow-guiding channel connects at the thickness direction of porous electrode.
Further, the above-mentioned first horizontal flow-guiding channel is parallel with the second transverse flow channels with the first transverse flow channels, and the length of the first horizontal flow-guiding channel is identical with the transverse width of porous electrode.
According to another aspect of the present utility model, a kind of liquid stream battery stack also is provided, comprise at least one flow battery, this flow battery is above-mentioned flow battery.
According to another aspect of the present utility model, a kind of flow battery system also is provided, comprise at least one flow battery, this flow battery is above-mentioned flow battery.
The utility model is provided with the flow-guiding channel of electrolysis liquid circulation in porous electrode inside, electrolyte is under the guide functions of flow-guiding channel, reduce the liquid flowing resistance that porous electrode causes electrolyte flow, effectively reduced the required liquid drift angle of electrolyte flow; And when electrolyte flowed in flow-guiding channel, uniformly penetrating in the porous electrode of flow-guiding channel both sides had improved the homogeneity that liquid stream flows, and has reduced the concentration polarization that causes because of the electrolyte flow inequality, improves the voltage efficiency of flow battery system.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.
Description of drawings
Accompanying drawing consist of this specification a part, be used for further understanding the utility model, accompanying drawing shows preferred embodiment of the present utility model, and is used for illustrating principle of the present utility model with specification.Among the figure:
Fig. 1 shows the structural representation of liquid stream battery stack of the prior art;
Fig. 2 shows the structural representation of flow battery system of the prior art;
Fig. 3 shows porous electrode and collector plate combined planar structural representation;
Fig. 4 a shows the porous electrode planar structure schematic diagram according to the utility model the first embodiment;
Fig. 4 b shows the porous electrode planar structure schematic diagram according to the utility model the second embodiment;
Fig. 5 shows the porous electrode planar structure schematic diagram according to the utility model the 3rd embodiment;
Fig. 6 a shows the porous electrode planar structure schematic diagram according to the utility model the 4th embodiment;
Fig. 6 b shows the porous electrode planar structure schematic diagram according to the utility model the 5th embodiment;
Fig. 7 shows the porous electrode planar structure schematic diagram according to the utility model the 6th embodiment;
Fig. 8 shows the porous electrode planar structure schematic diagram according to the utility model the 7th embodiment;
Fig. 9 shows the porous electrode planar structure schematic diagram according to the utility model the 8th embodiment;
Figure 10 shows the porous electrode planar structure schematic diagram according to the utility model the 9th embodiment;
Figure 11 shows the porous electrode planar structure schematic diagram according to the utility model the tenth embodiment;
Figure 12 shows the porous electrode planar structure schematic diagram according to the utility model the 11 embodiment;
Figure 13 shows the porous electrode planar structure schematic diagram according to the utility model the 12 embodiment;
Figure 14 shows the part-structure schematic diagram according to the flow battery of the utility model the 13 embodiment; And
Figure 15 shows the part-structure schematic diagram according to the flow battery of the utility model the 14 embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the embodiment of the present utility model is described in detail, but following embodiment and accompanying drawing only are to understand the utility model, and can not limit the utility model, the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
For the ease of statement, the utility model is defined as horizontal frame with the inlet of liquid flow frame and the frame at liquid outlet place, be defined as vertical frame with the frame of horizontal frame perpendicular, and then, the porous electrode direction parallel with horizontal frame that is embedded in this liquid flow frame is defined as laterally, the direction parallel with vertical frame is defined as vertically, as shown in Figure 3.But; horizontal frame of the present utility model and vertical frame can not be confined to direction shown in Figure 3, belong to the same utility model design scheme identical with the technical solution of the utility model essence all within protection range of the present utility model with the utility model.
In a kind of typical execution mode of the present utility model, a kind of porous electrode is provided, be provided with the flow-guiding channel 31 that electrolysis liquid flows in this porous electrode 3, flow-guiding channel 31 connects at the thickness direction of porous electrode 3.
The utility model is provided with the flow-guiding channel 31 of electrolysis liquid circulation in porous electrode 3 inside, electrolyte is under the guide functions of flow-guiding channel 31, reduced the liquid flowing resistance that 3 pairs of electrolyte flow of porous electrode cause, effectively reduced the required liquid drift angle of electrolyte flow, thereby reduced the pump consumption of flow battery system, improved the energy efficiency of flow battery system; And when electrolyte flowed in flow-guiding channel 31, uniformly penetrating in the porous electrode 3 of flow-guiding channel 31 both sides had improved the homogeneity that liquid stream flows, and has reduced the concentration polarization that causes because of the electrolyte flow inequality, improves the voltage efficiency of flow battery system.
In a kind of preferred embodiment of the present utility model, flow-guiding channel 31 is the horizontal flow-guiding channel that extends transversely or the vertical flow-guiding channel that extends longitudinally.Flow-guiding channel 31 extends transversely or extends longitudinally, the uniform liquid stream pressure that forms at the contact-making surface of flow-guiding channel 31 and porous electrode 3, thereby be delivered to the position that flow-guiding channel 31 is not set in the porous electrode 3 and also can form relatively uniformly liquid stream pressure, make the liquid stream of porous electrode 3 inside realize Uniform Flow.
The flow-guiding channel 31 of porous electrode 3 of the present utility model is one or more.To reduce porous electrode 3 inside to the drag effect of electrolyte and realize guide functions to electrolyte in the purpose of porous electrode 3 design flow-guiding channels 31, therefore, thus no matter the number of flow-guiding channel 31 is one or a plurality of guide functions that can play electrolyte realize the effect that electrolyte flows at porous electrode 3 inner homogeneous.
When flow-guiding channel 31 was one, flow-guiding channel 31 was arranged on the center line of porous electrode 3.When the center line at porous electrode 3 arranges a flow-guiding channel 31, this flow-guiding channel 31 can be arranged on the cross central line, the first embodiment shown in Fig. 4 a, also can be arranged on the longitudinal centre line, the second embodiment shown in Fig. 4 b, the electrolyte that is distributed in porous electrode 3 inside of flow-guiding channel 31 both sides can be realized Uniform Flow under the homogeneous pressure of the electrolyte of flow-guiding channel 31 inside.
When the flow-guiding channel 31 in the porous electrode 3 when being a plurality of, the arrangement mode of flow-guiding channel 31 is: A, each flow-guiding channel 31 be arranged in parallel, and the two ends of each flow-guiding channel 31 are to identical with the distance at the edge of the vertical porous electrode 3 of flow-guiding channel 31 bearing of trends.The 3rd embodiment as shown in Figure 5, flow-guiding channel 31 is arranged with arrangement mode A, the spacing of two adjacent flow-guiding channels 31 can equate also can be different, when the spacing of adjacent flow-guiding channel 31 reduces along the direction of electrolyte longitudinal flow, the volume in the porous electrode zone between the flow-guiding channel 31 also reduces along same direction, therefore more effectively avoided slowing down along with the flow velocity of the prolongation electrolyte of the glide path of electrolyte, caused the problem that liquid pressure diminishes, electrolyte flow rate further reduces that the porous electrode zone is produced.Adopt arrangement mode A, electrolyte in the flow-guiding channel 31 produces more uniform pressure to the porous electrode zone that it will flow through, thereby electrolyte homogeneous in porous electrode 3 is flowed, flow-guiding channel 31 not only can be arranged in the mode of the horizontal expansion shown in Fig. 5, also can arrange in the mode of longitudinal extension, and the spacing of adjacent flow-guiding channel 31 can equate also can be unequal, the spacing of preferred adjacent flow-guiding channel 31 reduces along the direction of electrolyte lateral flow.
When the flow-guiding channel 31 in the porous electrode 3 when being a plurality of, the arrangement mode of flow-guiding channel 31 can also for: B, each flow-guiding channel 31 be arranged in parallel, and adjacent flow-guiding channel 31 is staggered.The 4th embodiment shown in Fig. 6 a, the flow-guiding channel 31 of horizontal expansion carries out staggered with arrangement mode B, the spacing of adjacent flow-guiding channel 31 can equate also can be unequal, the spacing of preferred adjacent flow-guiding channel 31 reduces along the direction of electrolyte longitudinal flow, and the 5th embodiment shown in Fig. 6 b, the flow-guiding channel 31 of longitudinal extension carries out staggered with arrangement mode B, the spacing of adjacent flow-guiding channel 31 can equate also can be unequal, the spacing of preferred adjacent flow-guiding channel 31 reduces along the direction of electrolyte lateral flow, can make between the adjacent flow-guiding channel 31 electrolyte flow is produced certain pressure, under the comprehensive function of adjacent flow-guiding channel 31, so that electrolyte homogeneous in porous electrode 3 flows.
When the flow-guiding channel 31 in the porous electrode 3 when being a plurality of, the arrangement mode of flow-guiding channel 31 can also for: C, flow-guiding channel 31 are divided into a plurality of flow-guiding channel groups that be arranged in parallel, comprise a plurality of flow-guiding channels 31 in the flow-guiding channel group, and flow-guiding channel 31 is staggered in the adjacent flow-guiding channel group.The 6th embodiment as shown in Figure 7, the flow-guiding channel 31 of horizontal expansion is arranged with arrangement mode C, combine the advantage of arrangement mode A and B, therefore, flow-guiding channel 31 arranges with above-mentioned arrangement mode C and has reduced the required liquid drift angle of electrolyte flow and flow at the porous electrode 3 inner homogeneous of realizing.
When the flow-guiding channel 31 in the porous electrode 3 when being a plurality of, the arrangement mode of flow-guiding channel 31 can also for: D, flow-guiding channel 31 are divided into a plurality of flow-guiding channel groups that be arranged in parallel, comprise a plurality of flow-guiding channels 31 in the flow-guiding channel group, and staggered between each flow-guiding channel 31 in each flow-guiding channel group.The 7th embodiment as shown in Figure 8 also can realize the technique effect with as shown in Figure 7 arrangement mode when the flow-guiding channel 31 of longitudinal extension is arranged with arrangement mode D.
In the another kind of preferred embodiment of the utility model, flow-guiding channel 31 comprises edge horizontal or the first flow-guiding channel of longitudinal extension and the second flow-guiding channel that extends along the bearing of trend perpendicular to the first flow-guiding channel, and the first flow-guiding channel and the second flow-guiding channel are not communicated with.The flow-guiding channel 31 of horizontal expansion and the flow-guiding channel 31 of longitudinal extension are comprehensively arranged, both realized electrolyte laterally with vertically circulating in flow-guiding channel 31, and, so that electrolyte is more even at the porous electrode 3 inner liquid stream pressure that produce, better realized the effect that electrolyte flows at porous electrode 3 inner homogeneous.
First flow-guiding channel of above-described embodiment is one or more, and the second flow-guiding channel is one or more.When flow-guiding channel is the combined flow channel of the first flow-guiding channel and the second flow-guiding channel, the number of the first flow-guiding channel and the second flow-guiding channel can be selected according to the specific design mode of flow-guiding channel, thereby no matter the number of flow-guiding channel is one or a plurality of guide functions that can play electrolyte realize the effect that electrolyte flows at porous electrode 3 inner homogeneous.
The arrangement mode of the flow-guiding channel 31 in the porous electrode 3 of the present utility model is: E, porous electrode 3 are provided with a plurality of the first flow-guiding channels, and these a plurality of first flow-guiding channels are divided into a plurality of the first flow-guiding channel groups, the at least one the second flow-guiding channels are set between adjacent two the first flow-guiding channel groups, comprise a plurality of the first flow-guiding channels that be arranged in parallel in each first flow-guiding channel group, and the first adjacent flow-guiding channel 31 is staggered.The 8th embodiment as shown in Figure 9, flow-guiding channel 31 is arranged with arrangement mode E, the second flow-guiding channel of horizontal expansion is divided into uniform several porous electrodes zone with porous electrode, the parallel distribution of the first flow-guiding channel of the longitudinal extension that each porous electrode intra-zone arranges, and interlaced arranging, in each porous electrode zone, form so the better mobile zonule of homogeneous of an electrolysis liquid, these zonules combine and just obtain the porous electrode 3 that an inside has the distribution of electrolyte homogeneous, when the second flow-guiding channel longitudinal extension in making Fig. 9 and the first flow-guiding channel horizontal expansion, can realize that also above-mentioned electrolyte distributes at porous electrode 3 inner homogeneous.
The arrangement mode of the flow-guiding channel 31 in the porous electrode 3 of the present utility model can also be F, porous electrode 3 is provided with one or more " T " font flow-guiding channel group, " T " font flow-guiding channel group comprises first flow-guiding channel and second flow-guiding channel towards this first flow-guiding channel middle part, the second flow-guiding channel is not communicated with the first flow-guiding channel, when " T " font flow-guiding channel group when being a plurality of, two the second flow-guiding channels are parallel to each other in two adjacent " T " font flow-guiding channel groups, two the first flow-guiding channels are positioned at the difference end of corresponding the second flow-guiding channel, and each adjacent " T " font flow-guiding channel group is not communicated with each other.When flow-guiding channel 31 is arranged with arrangement mode F, in the 9th embodiment as shown in figure 10, " T " font can be with as shown in figure 10 just " T " font and " T " font cross arrangement, in addition, " T " font also can be all arranged also with " T " font just and can be all arranged to fall " T " font, and first flow-guiding channel of each " T " font and the spacing distance between the second flow-guiding channel can be the same or different.Liquid stream pressure homogeneous around " T " font, and the number of " T " font is more, the flow-guiding channel of porous electrode 3 inside is more, and the resistance that electrolyte flow is subject in porous electrode 3 is less, the effect of the easier realization homogeneous of electrolyte.
The arrangement mode of the flow-guiding channel 31 in the porous electrode 3 of the present utility model can also for: G, porous electrode 3 are provided with one or more " I " font flow-guiding channel group, " I " font flow-guiding channel group comprises that two parallel two the first flow-guiding channels that are oppositely arranged and two ends are respectively towards second flow-guiding channel at two the first flow-guiding channels middle parts, the second flow-guiding channel is not communicated with the first flow-guiding channel, when " I " font flow-guiding channel group when being a plurality of, and each " I " font flow-guiding channel group is not communicated with each other.When flow-guiding channel 31 is arranged with arrangement mode G, in the tenth embodiment as shown in figure 11, " I " font distributes by shown in Figure 11, liquid stream pressure homogeneous around " I " font, and the number of " I " font is more, and the flow-guiding channel of porous electrode 3 inside is more, the resistance that electrolyte flow is subject in porous electrode 3 is less, the effect of the easier realization homogeneous of electrolyte.
In another preferred embodiment of the utility model, flow-guiding channel 31 comprises edge horizontal or the first flow-guiding channel of longitudinal extension and the second flow-guiding channel that extends along the bearing of trend perpendicular to the first flow-guiding channel, and the first flow-guiding channel and the second flow-guiding channel are connected.The flow-guiding channel 31 of horizontal expansion and the flow-guiding channel 31 of longitudinal extension are comprehensively arranged, both realized electrolyte laterally with vertically circulating in flow-guiding channel 31, and first flow-guiding channel and the second flow-guiding channel be connected and strengthened the flowability of electrolyte in flow-guiding channel 31, so that electrolyte is more even at the porous electrode 3 inner liquid stream pressure that produce, better realized the effect that electrolyte flows at porous electrode 3 inner homogeneous.
The arrangement mode of the flow-guiding channel 31 in the porous electrode 3 of the present utility model comprises: H, porous electrode 3 are provided with one or more " Z " font flow-guiding channel group, " Z " font flow-guiding channel group comprises two the first flow-guiding channels and second flow-guiding channel, two the first flow-guiding channels are separately positioned on the both sides of the second flow-guiding channel, and two the first flow-guiding channels respectively from the second flow-guiding channel on different end be connected, when " Z " font flow-guiding channel group when being a plurality of, and each " Z " font flow-guiding channel group is not communicated with each other.In the 11 embodiment that the flow-guiding channel in the porous electrode 3 is set shown in Figure 12, electrolyte flows in the stream that " Z " font forms, the pressure of homogeneous is given birth in miscarriage to the liquid around this " Z " font, and, the number of " Z " font is more, the flow-guiding channel of porous electrode 3 inside is more, and the resistance that electrolyte flow is subject in porous electrode 3 is less, the effect that the easier realization homogeneous of electrolyte flows.
In a kind of preferred embodiment of the utility model, porous electrode of the present utility model 3 is rectangular, comprise that relative first side is connected relative the 3rd side and the four side that connects first side and second side with the second side, end towards the first side of the 3rd side forms towards the end formation towards the second side of the first isolation projection 35, the four sides of the outside of the 3rd side projection isolates projection 36 towards second of the outside of four side projection.The 12 embodiment as shown in figure 13, left hand edge at porous electrode 3 arranges the first isolation projection 35, right hand edge at porous electrode 3 arranges the second isolation projection 36, thereby make the electrolyte of pre-inflow porous electrode 3 from the horizontal and vertical common infiltration of porous electrode 3, make the homogeneity of electrolyte of porous electrode 3 inside better.
In the another kind of typical execution mode of the utility model, a kind of flow battery also is provided, comprise liquid flow frame 1, collector plate 2, porous electrode 3 and barrier film 4, porous electrode 3 is embedded in the cavity of liquid flow frame 1, collector plate 2 fits in a side of porous electrode 3, barrier film 4 fits in porous electrode 3 away from a side of collector plate 2, the inlet 12 and the liquid outlet 13 that have the inflow of electrolysis liquid or outflow porous electrode 3 in two frames of liquid flow frame 1 opposing parallel, has laterally the first transverse flow channels 32 of circulation of electrolysis liquid between inlet 12 and the porous electrode 3, has laterally the second transverse flow channels 33 of circulation of electrolysis liquid between liquid outlet 13 and the porous electrode 3, porous electrode 3 is porous electrode 3 of the present utility model, the 13 embodiment as shown in figure 14; Perhaps porous electrode 3 comprises at least two porous electrode pieces 30 that are fitted on the collector plate 2, form the first horizontal flow-guiding channel 34 between the adjacent porous electrode piece 30, the first horizontal flow-guiding channel 34 connects the 14 embodiment as shown in figure 15 at the thickness direction of porous electrode 3.
Porous electrode of the present utility model 3 inside have flow-guiding channel 31 or the first horizontal flow-guiding channel 34 of electrolysis liquid circulation, have improved the homogeneity that porous electrode 3 electrolyte inside flow, and have reduced concentration polarization, have improved the efficient of flow battery.
The first horizontal flow-guiding channel 34 that above-mentioned porous electrode piece 30 forms is parallel with the second transverse flow channels 33 with the first transverse flow channels 32, and the length of the first horizontal flow-guiding channel 34 is identical with the transverse width of porous electrode 3.Porous electrode piece 30 formed first horizontal flow-guiding channels also can be realized the effect identical with flow-guiding channel 3, and are comprised of two adjacent porous electrode pieces 30, and compound mode is simple, are easy to realize.
In another typical embodiment of the utility model, a kind of liquid stream battery stack and a kind of flow battery system also are provided, comprise at least one flow battery, flow battery is flow battery of the present utility model.Realized at flow battery of the present utility model having reduced the pressure reduction of the battery pile that is formed by flow battery, and then having reduced the consumption of liquor pump on the basis of the homogeneity that porous electrode 3 electrolyte inside flow, improved the efficient of flow battery system.
Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (15)
1. a porous electrode is characterized in that, is provided with the flow-guiding channel (31) that electrolysis liquid flows in the described porous electrode (3), and described flow-guiding channel (31) connects at the thickness direction of described porous electrode (3).
2. porous electrode according to claim 1 is characterized in that, described flow-guiding channel (31) is the horizontal flow-guiding channel that extends transversely or the vertical flow-guiding channel that extends longitudinally.
3. porous electrode according to claim 2 is characterized in that, described flow-guiding channel (31) is one or more.
4. porous electrode according to claim 3 is characterized in that, described flow-guiding channel (31) is one, and described flow-guiding channel (31) is arranged on the center line of described porous electrode (3).
5. porous electrode according to claim 3 is characterized in that, described flow-guiding channel (31) is a plurality of, and the arrangement mode of described flow-guiding channel (31) is:
A, each described flow-guiding channel (31) be arranged in parallel, and the two ends of each described flow-guiding channel (31) are to identical with the distance at the edge of the vertical described porous electrode (3) of described flow-guiding channel (31) bearing of trend; Perhaps
B, each described flow-guiding channel (31) be arranged in parallel, and adjacent described flow-guiding channel (31) is staggered; Perhaps
C, described flow-guiding channel (31) are divided into a plurality of flow-guiding channel groups that be arranged in parallel, comprise a plurality of described flow-guiding channels (31) in the described flow-guiding channel group, and flow-guiding channel (31) is staggered described in the adjacent described flow-guiding channel group; Perhaps
D, described flow-guiding channel (31) are divided into a plurality of flow-guiding channel groups that be arranged in parallel, comprise a plurality of described flow-guiding channels (31) in the described flow-guiding channel group, and staggered between each the described flow-guiding channel (31) in each described flow-guiding channel group.
6. porous electrode according to claim 1, it is characterized in that, described flow-guiding channel (31) comprises edge horizontal or the first flow-guiding channel of longitudinal extension and the second flow-guiding channel that extends along the bearing of trend perpendicular to described the first flow-guiding channel, and described the first flow-guiding channel and described the second flow-guiding channel are not communicated with.
7. porous electrode according to claim 6 is characterized in that, described the first flow-guiding channel is one or more, and described the second flow-guiding channel is one or more.
8. porous electrode according to claim 7 is characterized in that, the arrangement mode of described flow-guiding channel (31) is:
E, described porous electrode (3) are provided with a plurality of the first flow-guiding channels, and these a plurality of first flow-guiding channels are divided into a plurality of the first flow-guiding channel groups, between adjacent two the first flow-guiding channel groups at least one described the second flow-guiding channel is set, comprise a plurality of the first flow-guiding channels that be arranged in parallel in each first flow-guiding channel group, and adjacent described the first flow-guiding channel is staggered; Perhaps
F, described porous electrode (3) is provided with one or more " T " font flow-guiding channel group, described " T " font flow-guiding channel group comprises described first flow-guiding channel and described second flow-guiding channel towards this first flow-guiding channel middle part, described the second flow-guiding channel in described " T " font flow-guiding channel group is not communicated with described the first flow-guiding channel, when described " T " font flow-guiding channel group when being a plurality of, in two adjacent described " T " font flow-guiding channel groups, two the second flow-guiding channels are parallel to each other, two the first flow-guiding channels are positioned at the difference end of corresponding the second flow-guiding channel, and each adjacent described " T " font flow-guiding channel group is not communicated with each other; Perhaps
G, described porous electrode (3) are provided with one or more " I " font flow-guiding channel group, described " I " font flow-guiding channel group comprises that parallel two the first flow-guiding channels that are oppositely arranged and two ends are respectively towards described second flow-guiding channel at described two the first flow-guiding channels middle part, described the second flow-guiding channel is not communicated with described the first flow-guiding channel, when described " I " font flow-guiding channel group when being a plurality of, and each described " I " font flow-guiding channel group is not communicated with each other.
9. porous electrode according to claim 1, it is characterized in that, described flow-guiding channel (31) comprises edge horizontal or the first flow-guiding channel of longitudinal extension and the second flow-guiding channel that extends along the bearing of trend perpendicular to described the first flow-guiding channel, and described the first flow-guiding channel and described the second flow-guiding channel are connected.
10. porous electrode according to claim 9 is characterized in that, the arrangement mode of described flow-guiding channel (31) comprising:
H, described porous electrode (3) are provided with one or more " Z " font flow-guiding channel group, described " Z " font flow-guiding channel group comprises two the first flow-guiding channels and second flow-guiding channel, two described the first flow-guiding channels are separately positioned on the both sides of the second flow-guiding channel, and two described the first flow-guiding channels respectively from described the second flow-guiding channel on different end be connected, when described " Z " font flow-guiding channel group when being a plurality of, and each described " Z " font flow-guiding channel group is not communicated with each other.
11. each described porous electrode in 10 according to claim 1, it is characterized in that, described porous electrode (3) is rectangular, comprise that relative first side is connected relative the 3rd side and the four side that connects described first side and second side with the second side, end towards the first side of described the 3rd side forms the first isolation projection (35) towards the outside of the 3rd side projection, and the end towards the second side of described four side forms the second isolation projection (36) towards the outside of four side projection.
12. flow battery, comprise liquid flow frame (1), collector plate (2), porous electrode (3) and barrier film (4), described porous electrode (3) is embedded in the cavity of described liquid flow frame (1), described collector plate (2) fits in a side of described porous electrode (3), described barrier film (4) fits in described porous electrode (3) away from a side of described collector plate (2), have electrolysis liquid in two frames of described liquid flow frame (1) opposing parallel and flow into or flow out inlet (12) and the liquid outlet (13) of described porous electrode (3), it is characterized in that, has laterally first transverse flow channels (32) of circulation of electrolysis liquid between described inlet (12) and the described porous electrode (3), has laterally second transverse flow channels (33) of circulation of electrolysis liquid between described liquid outlet (13) and the described porous electrode (3)
Described porous electrode (3) is each described porous electrode (3) in the claim 1 to 11; Perhaps
Described porous electrode (3) comprises at least two the porous electrode pieces (30) that are fitted on the described collector plate (2), form the first horizontal flow-guiding channel (34) between the adjacent described porous electrode piece (30), the described first horizontal flow-guiding channel (34) connects at the thickness direction of described porous electrode (3).
13. flow battery according to claim 12, it is characterized in that, the described first horizontal flow-guiding channel (34) is parallel with described the second transverse flow channels (33) with described the first transverse flow channels (32), and the length of the described first horizontal flow-guiding channel (34) is identical with the transverse width of described porous electrode (3).
14. a liquid stream battery stack comprises at least one flow battery, it is characterized in that, described flow battery is claim 12 or 13 described flow batteries.
15. a flow battery system comprises at least one flow battery, it is characterized in that, described flow battery is claim 12 or 13 described flow batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203129398U CN202651267U (en) | 2012-06-29 | 2012-06-29 | Porous electrode and flow battery, battery stack and battery system comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203129398U CN202651267U (en) | 2012-06-29 | 2012-06-29 | Porous electrode and flow battery, battery stack and battery system comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202651267U true CN202651267U (en) | 2013-01-02 |
Family
ID=47420323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203129398U Expired - Lifetime CN202651267U (en) | 2012-06-29 | 2012-06-29 | Porous electrode and flow battery, battery stack and battery system comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202651267U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723501A (en) * | 2012-06-29 | 2012-10-10 | 中国东方电气集团有限公司 | Porous electrode, liquid flow battery with same, battery stack and battery system |
| CN102751525A (en) * | 2012-06-29 | 2012-10-24 | 中国东方电气集团有限公司 | Flow battery, and flow battery stack and flow battery system containing same |
-
2012
- 2012-06-29 CN CN2012203129398U patent/CN202651267U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723501A (en) * | 2012-06-29 | 2012-10-10 | 中国东方电气集团有限公司 | Porous electrode, liquid flow battery with same, battery stack and battery system |
| CN102751525A (en) * | 2012-06-29 | 2012-10-24 | 中国东方电气集团有限公司 | Flow battery, and flow battery stack and flow battery system containing same |
| CN102723501B (en) * | 2012-06-29 | 2015-02-18 | 中国东方电气集团有限公司 | Porous electrode, liquid flow battery with same, battery stack and battery system |
| CN102751525B (en) * | 2012-06-29 | 2015-09-16 | 中国东方电气集团有限公司 | Flow battery and containing its liquid stream battery stack and flow battery system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102751525B (en) | Flow battery and containing its liquid stream battery stack and flow battery system | |
| EP3136490B1 (en) | Bipolar plate, redox flow battery, and method for producing bipolar plate | |
| CN102723501B (en) | Porous electrode, liquid flow battery with same, battery stack and battery system | |
| CN103390759B (en) | Liquid flow frame structure for flow cell and electric pile formed by flow cell | |
| CN102593482B (en) | Collector plate and flow battery and flow battery stack containing same | |
| CN109037725B (en) | Flow battery capable of improving distribution uniformity of electrolyte, electrode structure and method | |
| CN103094600B (en) | A kind of flow half-cell and the liquid stream battery stack with it | |
| CN102299356A (en) | Current collector of flow battery and flow battery | |
| CN106876762A (en) | A kind of flow battery bipolar plates that interdigital runner is deepened containing broadening | |
| CN103413956A (en) | Proton exchange membrane fuel cell channel | |
| CN102136594A (en) | Double-power liquid stream battery electric pile structure and liquid stream battery containing electric pile | |
| CN102593491A (en) | Liquid flow cell stack and cell system comprising same | |
| CN103117402B (en) | Porous electrode assembly, liquid-flow half-cell and liquid-flow cell stack | |
| CN206134824U (en) | A liquid stream frame for vanadium redox flow battery | |
| US20150364767A1 (en) | Porous electrode assembly, liquid-flow half-cell, and liquid-flow cell stack | |
| CN208460880U (en) | A kind of flow battery and electrode structure improving electrolyte distributing homogeneity | |
| CN202651267U (en) | Porous electrode and flow battery, battery stack and battery system comprising same | |
| KR20170034995A (en) | Flow flame and redox flow secondary battery having the same | |
| CN103137983B (en) | Porous electrode group, flow half-cell and liquid stream battery stack | |
| CN116956633B (en) | Flow field optimization design method of flow battery and flow battery | |
| CN102593481B (en) | Flow battery, battery stack, battery system and control method for electrolyte thereof | |
| CN202127059U (en) | Collecting plate of liquid flow battery and liquid flow battery | |
| CN203367426U (en) | Flow frame structure of flow battery and electric pile comprising flow frame structure | |
| CN202651268U (en) | Porous electrode and flow battery, battery stack and battery system containing same | |
| CN202633440U (en) | Flow cell and flow cell stack including flow cell and flow cell system including flow cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180531 Address after: 611731 18 West core road, hi-tech West District, Chengdu, Sichuan Patentee after: DONGFANG ELECTRIC Co.,Ltd. Address before: 611731 Dongfang Electrical Research Institute, 18 West core road, hi-tech West District, Chengdu, Sichuan Patentee before: DONGFANG ELECTRIC Corp. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190327 Address after: 610097 No. 18 Xixin Avenue, Chengdu High-tech Zone, Sichuan Province Patentee after: Dongfang Electric (Chengdu) Hydrogen Fuel Cell Technology Co.,Ltd. Address before: 611731 18 West core road, hi-tech West District, Chengdu, Sichuan Patentee before: DONGFANG ELECTRIC Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |