CN202127059U - Collecting plate of liquid flow battery and liquid flow battery - Google Patents
Collecting plate of liquid flow battery and liquid flow battery Download PDFInfo
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- CN202127059U CN202127059U CN2011202541210U CN201120254121U CN202127059U CN 202127059 U CN202127059 U CN 202127059U CN 2011202541210 U CN2011202541210 U CN 2011202541210U CN 201120254121 U CN201120254121 U CN 201120254121U CN 202127059 U CN202127059 U CN 202127059U
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- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 239000003792 electrolyte Substances 0.000 claims abstract description 63
- 238000006243 chemical reaction Methods 0.000 abstract description 18
- 239000000463 material Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000036632 reaction speed Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910002804 graphite Inorganic materials 0.000 description 10
- 239000010439 graphite Substances 0.000 description 10
- 229910052720 vanadium Inorganic materials 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 239000000376 reactant Substances 0.000 description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 6
- 230000008676 import Effects 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229910001456 vanadium ion Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model provides a collecting plate of a liquid flow battery and a liquid flow battery. A flow field is arranged in at least one side of the collecting plate (2) of the liquid flow battery. The flow field comprises flow chutes (21) and flow ridges (22) distributed at intervals. The total area of the section of the flow chute along the flowing direction of the electrolyte in the flow field decreased gradually. The utility model effectively solves the problems that the collecting plate in prior art has no guiding effect to cause energy waste and nonuniform flow of electrolyte and the concentration of reactive materials in the electrolyte decreases gradually while the reaction is processed to cause the reaction speed and heat generated by reaction everywhere at the electrode are nonuniform so as to improve the charging and discharging performances and service life of the battery.
Description
Technical field
The utility model relates to field of batteries, in particular to a kind of collector plate and flow battery of flow battery.
Background technology
The kind of flow battery is a lot, and all-vanadium flow battery is an example to use comparatively widely, and vanadium redox battery is a kind of of redox flow batteries; Has long service life; Energy conversion efficiency is high, and fail safe is good, advantages of environment protection; Can be used for the supporting extensive energy-storage system of wind power generation and photovoltaic generation, be one of electrical network peak load shifting, balanced loaded main selection.
Vanadium redox battery is respectively with the vanadium ion V2+/V3+ of different valence state and the V4+/V5+ positive and negative polarities oxidation-reduction pair as battery; Both positive and negative polarity electrolyte is stored in respectively in two fluid reservoirs; Drive active electrolyte to reacting environment (battery pile) by acidproof liquor pump and be back to again and form the circulating fluid loop in the fluid reservoir, to realize charge and discharge process.
In the all-vanadium flow battery 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 be stacked successively by the multi-disc monocell to compress, and is in series.Wherein, traditional monolithic flow battery is as shown in Figure 1, and the monomer liquid galvanic battery comprises: liquid flow frame 1, collector plate 2, electrode 3 and amberplex 4 are stacked successively by a plurality of cells 5 and to compress and to be composed in series battery pile.In the said structure, collector plate 2 is smooth plate-like structure.
At present; The collector plate that is used for vanadium redox battery mainly contains metal collector plate, conductive plastic current collector plate and high-density graphite plate etc.; In the integrated process of collector plate and electrode 3, generally adopt the dull and stereotyped mode that combines with the direct hot pressing of electrode of collector plate in the prior art.When this dull and stereotyped collector plate was used for vanadium redox battery, following subject matter can appear:
The first, electrolyte is through in the process of electrode, can only lean on self penetrating power of graphite felt, thereby the big consumption that increases pump of liquid flowing resistance causes energy waste.
Second; Because the tabular collector plate does not have guide effect for flow; Electrolyte exists internal flow inhomogeneous in the process of circulation; Even the position, dead angle do not flow through of flow, thereby cause the inhomogeneities of voltage between serious polarization phenomena and each monocell, reduce the useful life and the efficient of electrode and amberplex.
The 3rd, along with the carrying out of reaction, reactive material constantly consumes, and the reactant concentration of entrance point is higher than port of export reactant concentration and then causes reaction inhomogeneous, problems such as concentration polarization occur.
The utility model content
The utility model aims to provide a kind of collector plate and flow battery of flow battery; There is not guide effect to cause energy waste and electrolyte flow inhomogeneous to solve in the prior art collector plate; And in the electrolyte reactive material concentration along with the reaction carrying out reduce gradually; It is inhomogeneous to cause electrode reaction rate and reaction everywhere to produce heat, and then reduces the charge-discharge performance of battery and the problem in useful life.
To achieve these goals; An aspect according to the utility model; A kind of collector plate of flow battery is provided; On at least one side of collector plate, be provided with the flow field, the flow field comprises runner ditch spaced apart and runner ridge, and the gross area in the cross section of each runner bank electrolyte flow direction reduces gradually in the flow field.
Further, the gross area in the cross section of each runner ditch is reduced to reducing gradually of noncontinuity gradually in the flow field.
Further, the flow field is configured to bend shape.
Further, have the runner ditches that many groups are parallel to each other in the flow field, comprising: the entrance channel ditch, intermediate flow channel ditch and the outlet flow ditch that set gradually along the electrolyte flow direction; Entrance channel ditch, intermediate flow channel ditch and outlet flow ditch include many runner ditches, and the sectional area of every runner ditch in entrance channel ditch, intermediate flow channel ditch and the outlet flow ditch is all identical; Wherein, the runner ditch number in the entrance channel ditch is more than the number of the runner ditch in the intermediate flow channel ditch, and the number of the runner ditch in the intermediate flow channel ditch is more than the number of the runner ditch in the outlet flow ditch.
Further, the intermediate flow channel ditch has the runner ditch that many groups are parallel to each other; Each number of organizing the runner ditch in the intermediate flow channel ditch reduces along the electrolyte flow direction successively gradually.
Further, have the runner ditches that many groups are parallel to each other in the flow field, comprising: the entrance channel ditch, intermediate flow channel ditch and the outlet flow ditch that set gradually along the electrolyte flow direction; The number of the runner ditch in entrance channel ditch, intermediate flow channel ditch and the outlet flow ditch is all identical; Wherein, the gross area in the cross section of the runner ditch in the entrance channel ditch is greater than the gross area in the cross section of the runner ditch in the intermediate flow channel ditch, and the gross area in the cross section of the runner ditch in the intermediate flow channel ditch is greater than the gross area in the cross section of the runner ditch in the outlet flow ditch.
Further, entrance channel ditch, intermediate flow channel ditch and outlet flow ditch include many runner ditches.
Further, the width of every runner ditch in entrance channel ditch, intermediate flow channel ditch and the outlet flow ditch is all identical; The degree of depth of every runner ditch in the entrance channel ditch is all identical, and the degree of depth of every runner ditch in the intermediate flow channel ditch is all identical, and the degree of depth of every runner ditch in the outlet flow ditch is all identical; Wherein, the degree of depth of runner ditch is greater than the degree of depth of intermediate flow channel ditch in the entrance channel ditch, and the degree of depth of intermediate flow channel ditch is greater than the degree of depth of the runner ditch in the outlet flow ditch.
Further, the intermediate flow channel ditch has the runner ditch that many groups are parallel to each other; Each degree of depth of organizing the runner ditch in the intermediate flow channel ditch reduces along the electrolyte flow direction successively gradually.
Further, the degree of depth of every runner ditch of entrance channel ditch, intermediate flow channel ditch and outlet flow ditch is all identical; The width of every runner ditch in the entrance channel ditch is all identical, and the width of every runner ditch in the intermediate flow channel ditch is all identical, and the width of every runner ditch in the outlet flow ditch is all identical; Wherein, the width of runner ditch is greater than the width of intermediate flow channel ditch in the entrance channel ditch, and the width of intermediate flow channel ditch is greater than the width of the runner ditch in the outlet flow ditch.
Further, the intermediate flow channel ditch has the runner ditch that many groups are parallel to each other; Each width of organizing the runner ditch in the intermediate flow channel ditch reduces along the electrolyte flow direction successively gradually.
Further, the gross area in the cross section of each runner ditch is reduced to gradually and successionally reduces gradually in the flow field.
Further, the flow field is configured to parallel flow field.
According to the utility model on the other hand, a kind of flow battery is provided, has comprised: liquid flow frame, have center-aisle, and inlet that is connected with center-aisle and liquid outlet; Collector plate is arranged in the liquid flow frame center-aisle; Amberplex is arranged between each collector plate, and amberplex and collector plate form hold electrolyte cavity; Electrode is arranged in the cavity, and collector plate is above-mentioned collector plate, and collector plate is provided with the flow field towards amberplex one side.
In the technical scheme of the utility model, at least one side of collector plate, be provided with the flow field, the flow field comprises runner ditch spaced apart and runner ridge, and the gross area in the cross section of each runner bank electrolyte flow direction reduces gradually in the flow field.At first in the electrolyte flow process, can play good guide effect in flow field with runner ditch spaced apart and runner ridge; Avoided to lean in the prior art self penetrating power of graphite felt; The problem that liquid flowing resistance is big; Electrolyte flows unobstructed in collector plate; Can cover all electrode zones, the position, dead angle of electrolyte process can not appear not having in whole electrolyte flow field, does not have guide effect to cause energy waste and the uneven problem of electrolyte flow thereby efficiently solve collector plate.Simultaneously, the gross area in the cross section of each runner bank electrolyte flow direction reduces gradually in the flow field of the utility model, like this; Electrolyte is accelerated in the flowing velocity in this flow field under the driving of pump gradually; The amount of the reactant of the electrolyte that the fast position of flowing velocity was passed through in the unit interval is many more, therefore, though electrolyte in flow process its reactive material concentration along with the reaction carrying out reduce gradually; But in the flow field process of the collector plate through the utility model; Electrolyte speed is accelerated gradually, and the amount of the reactant of the electrolyte through each position is more and more, thus the reduction of having offset reactive material concentration.Thereby make electrolyte more even, thereby reduce polarization, improve reaction efficiency and electrode and barrier film useful life in the reaction of each position, collector plate flow field.Simultaneously, the electrolyte exothermic heat of reaction is more even, guarantees in the charge and discharge process pole plate homogeneity of temperature everywhere.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 shows flow battery structural representation of the prior art;
Fig. 2 shows the structural representation according to the embodiment one of the collector plate of the flow battery of the utility model;
Fig. 3 shows the schematic side view of the collector plate of the flow battery among Fig. 2;
Fig. 4 shows the structural representation according to the embodiment two of the collector plate of the flow battery of the utility model;
Fig. 5 shows the schematic side view of the collector plate of the flow battery among Fig. 4;
Fig. 6 shows the structural representation according to the embodiment three of the collector plate of the flow battery of the utility model;
Fig. 7 shows the schematic side view of the collector plate of the flow battery among Fig. 6;
Fig. 8 shows the structural representation according to the embodiment four of the collector plate of the flow battery of the utility model; And
Fig. 9 illustrates the schematic top plan view of the collector plate of the flow battery among Fig. 8.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Fig. 2 shows the structural representation according to the embodiment one of the collector plate of the flow battery of the utility model; Fig. 3 shows the schematic side view of the collector plate of the flow battery among Fig. 2.In conjunction with referring to Fig. 2 to Fig. 3; As can be seen from the figure; At least one side of the collector plate of the flow battery of embodiment one is provided with the flow field, and the flow field comprises runner ditch spaced apart 21 and runner ridge 22, and each runner ditch 21 reduces along the gross area in the cross section of electrolyte flow direction gradually in the flow field.In the present embodiment, but collector plate by the high conductivity processing graphite as base material.
In embodiment one, the gross area in the cross section of each runner ditch 21 is reduced to reducing gradually of noncontinuity gradually in the flow field, and specifically, the flow field is configured to bend shape, and this bending shape is also referred to as circuitous shape, bow font or snakelike.In embodiment one, have the runner ditches 21 that many groups are parallel to each other in the flow field, comprising: the entrance channel ditch 21a, intermediate flow channel ditch 21b and the outlet flow ditch 21c that set gradually along the electrolyte flow direction.Entrance channel ditch 21a, intermediate flow channel ditch 21b and outlet flow ditch 21c include many runner ditches 21, and the sectional area of every runner ditch among entrance channel ditch 21a, intermediate flow channel ditch 21b and the outlet flow ditch 21c is all identical.Wherein, the runner ditch number among the entrance channel ditch 21a is more than the number of the runner ditch among the intermediate flow channel ditch 21b, and the number of the runner ditch among the intermediate flow channel ditch 21b is more than the number of the runner ditch among the outlet flow ditch 21c.
Preferably, for make electrolyte in the flow field medium velocity more even, intermediate flow channel ditch 21b has the runner ditches 21 that many groups are parallel to each other; Each number of organizing the runner ditch among the intermediate flow channel ditch 21b reduces along the electrolyte flow direction successively gradually.
In a kind of preferred embodiment, as shown in Figure 2, entrance channel ditch 21a has six runner ditches, and outlet flow ditch 21c has two runner ditches, and the electrolyte flow field is every through the runner that once makes a circulation just to reduce therebetween.Intermediate flow channel ditch 21a has three groups, has five, four, three runner ditches respectively.In the process of electrolyte through the flow field of the collector plate of embodiment one; Though; Though the reactant concentration of the electrolyte of the port of export is littler than entrance point; But the runner ditch number among the outlet flow ditch 21c of the port of export is less than the number of the runner ditch among the entrance channel ditch 21a of entrance point, makes the speed of the electrolyte in every runner ditch of the port of export be higher than the speed of the electrolyte in every runner ditch of entrance point, thereby to a certain degree offsets the reduction of the reaction rate that reactant concentration reduces to cause.
Simultaneously, like the flow field on the collector plate among Fig. 2, runner ditch 21 width are five times of runner ridge 22 width, and the width at the upper and lower edge 10 of collector plate is the width of a runner ditch 21, and the width at the left and right edge of collector plate is the width of the runner ditch 21 of twice.In addition, as shown in Figure 3, the degree of depth of runner ditch 21 is 1/3rd of a collector plate integral thickness.
In another kind of embodiment, the gross area in the cross section of each runner ditch 21 is reduced to reducing gradually of noncontinuity gradually in the flow field, and the flow field of embodiment two also is configured to bend shape.Have the runner ditches 21 that many groups are parallel to each other in the flow field of present embodiment, comprising: the entrance channel ditch 21a, intermediate flow channel ditch 21b and the outlet flow ditch 21c that set gradually along the electrolyte flow direction.The number of the runner ditch among entrance channel ditch 21a, intermediate flow channel ditch 21b and the outlet flow ditch 21c is all identical.Wherein, The gross area in the cross section of the runner ditch among the entrance channel ditch 21a is greater than the gross area in the cross section of the runner ditch among the intermediate flow channel ditch 21b, and the gross area in the cross section of the runner ditch among the intermediate flow channel ditch 21b is greater than the gross area in the cross section of the runner ditch among the outlet flow ditch 21c.
Particularly, realize that the mode that the gross area in the cross section of the runner ditch among entrance channel ditch 21a, intermediate flow channel ditch 21b and the outlet flow ditch 21c reduces successively has multiple.Wherein a kind of mode is embodiment two, and specifically, in embodiment two, entrance channel ditch 21a, intermediate flow channel ditch 21b are all identical with the width of every runner ditch of outlet flow ditch 21c.The degree of depth of every runner ditch among the entrance channel ditch 21a is all identical, and the degree of depth of every runner ditch among the intermediate flow channel ditch 21b is all identical, and the degree of depth of every runner ditch among the outlet flow ditch 21c is all identical.Wherein, the degree of depth of runner ditch is greater than the degree of depth of intermediate flow channel ditch 21b among the entrance channel ditch 21a, and the degree of depth of intermediate flow channel ditch 21b is greater than the degree of depth of the runner ditch among the outlet flow ditch 21c.Simultaneously preferably, for make electrolyte in the flow field medium velocity more even, intermediate flow channel ditch 21b has the runner ditches that many groups are parallel to each other; Each degree of depth of organizing the runner ditch among the intermediate flow channel ditch 21b reduces along the electrolyte flow direction successively gradually.
As preferred embodiment a kind of, as shown in Figure 4, entrance channel ditch 21a all has two parallel runner ditches with outlet flow ditch 21c, and intermediate flow channel ditch 21b comprises three groups, and every group also all has two runner ditches.Entrance channel ditch 21a, intermediate flow channel ditch 21b and outlet flow ditch 21c make a circulation and go, and as shown in Figure 5, the degree of depth of entrance channel ditch 21a, intermediate flow channel ditch 21b and outlet flow ditch 21c reduces (wherein gradually; The degree of depth among every group of intermediate flow channel ditch 21b also reduces gradually); Like this, guaranteed that in the electrolyte flow process, the gross area of cross section of fluid channel is more and more littler; Thereby the raising flow velocity, the reaction speed in even whole flow field.Preferably, the degree of depth of outlet flow ditch 21c and the ratio of the degree of depth of entrance channel ditch 21a are 0.1～0.9.
The another kind of mode that the gross area in the cross section of the runner ditch among realization entrance channel ditch 21a, intermediate flow channel ditch 21b and the outlet flow ditch 21c reduces successively is embodiment three; Specifically; In embodiment three, entrance channel ditch 21a, intermediate flow channel ditch 21b are all identical with the degree of depth of every runner ditch of outlet flow ditch 21c; The width of every runner ditch among the entrance channel ditch 21a is all identical, and the width of every runner ditch among the intermediate flow channel ditch 21a is all identical, and the width of every runner ditch among the outlet flow ditch 21c is all identical; Wherein, the width of runner ditch is greater than the width of intermediate flow channel ditch 21b among the entrance channel ditch 21a, and the width of intermediate flow channel ditch 21b is greater than the width of the runner ditch among the outlet flow ditch 21c.Simultaneously preferably, for make electrolyte in the flow field medium velocity more even, intermediate flow channel ditch 21b has the runner ditches that many groups are parallel to each other; Each width of organizing the runner ditch among the intermediate flow channel ditch 21b reduces along the electrolyte flow direction successively gradually.
As preferred embodiment a kind of, as shown in Figure 6, entrance channel ditch 21a all has two parallel runner ditches with outlet flow ditch 21c, and intermediate flow channel ditch 21b comprises three groups, and every group also all has two runner ditches.Entrance channel ditch 21a, intermediate flow channel ditch 21b and outlet flow ditch 21c make a circulation and go.In conjunction with referring to Fig. 6 to Fig. 7; The width of entrance channel ditch 21a, intermediate flow channel ditch 21b and outlet flow ditch 21c reduces (wherein, the width among every group of intermediate flow channel ditch 21b also reduces gradually) gradually, like this; Guaranteed in the electrolyte flow process; The gross area of cross section of fluid channel is more and more littler, thereby improves flow velocity, the reaction speed in even whole flow field.Preferably, the width of outlet flow ditch 21c and the ratio of the width of entrance channel ditch 21a are 0.1～0.9.
Certainly, the gross area in the cross section of each runner ditch reduces also can reduce gradually for successional gradually in the flow field of the utility model.At this moment, to shown in Figure 9, in embodiment four, the flow field is configured to parallel flow field like Fig. 8.The degree of depth of this parallel flow field reduces along the electrolyte flow direction gradually.Like this, guaranteed that in the electrolyte flow process, the gross area of cross section of fluid channel is more and more littler, thereby improved flow velocity, the reaction speed in even whole flow field.
The utility model also provides a kind of flow battery, comprising: liquid flow frame, have center-aisle, and inlet that is connected with center-aisle and liquid outlet; Collector plate is arranged in the liquid flow frame center-aisle; Amberplex is arranged between each collector plate, and amberplex and collector plate form hold electrolyte cavity; Electrode is arranged in the cavity, and collector plate is above-mentioned collector plate, and collector plate is provided with the flow field towards amberplex one side.Electrolyte is more even in the reaction of each position, collector plate flow field in this flow battery, thereby reduces polarization, improves reaction efficiency and electrode and barrier film useful life.Simultaneously, the electrolyte exothermic heat of reaction is more even, guarantees in the charge and discharge process pole plate homogeneity of temperature everywhere.
Adopt the utility model technical scheme design vanadium redox battery, be exemplified below:
Example 1:
But as the collector plate material, carve the flow field above that with high-purity processing graphite pole plate.Whole collector plate is rectangle 200mm * 240mm, and collector plate thickness is 4mm, and the runner ditch depth is got 1mm, and the runner furrow width is wide five times of runner ridge, and the runner bar number from import to outlet is respectively six, five, four, three and two.It is 92.5% that the monocell that uses this collector plate and amberplex and graphite felt electrode to form discharges and recharges coulombic efficiency, and voltage efficiency is 89%, and energy efficiency is 82.3%.
Example 2:
But as the collector plate material, carve the flow field above that with high-purity processing graphite pole plate.Whole collector plate is rectangle 200mm * 240mm, and collector plate thickness is 4mm, and the runner furrow width is wide five times of runner ridge, and the runner in whole flow field is one group with parallel two, from import to outlet circuitous four times altogether.Runner bar number from import to outlet is five groups of totally ten branches, and the degree of depth of these five groups of runners reduces gradually, is respectively 1.5mm, 1.3mm, 1.1mm, 0.9mm, 0.7mm.It is 91.5% that the monocell that uses this collector plate and amberplex and graphite felt electrode to form discharges and recharges coulombic efficiency, and voltage efficiency is 87.5%, and energy efficiency is 80.1%.
Example 3:
But as the collector plate material, carve the flow field above that with high-purity processing graphite pole plate.Whole collector plate is rectangle 200mm * 240mm, and collector plate thickness is 4mm, and the runner ditch depth is got 1mm, and the runner in whole flow field is one group with two of walking abreast, and makes a circulation four times altogether to outlet from import.Runner bar number from import to outlet is five groups of totally ten branches, and the width of these ten runners is respectively 25mm, 25mm, 20mm, 20mm, 15mm, 15mm, 10mm, 10mm, 5mm, 5mm.It is 91% that the monocell that uses this collector plate and amberplex and graphite felt electrode to form discharges and recharges coulombic efficiency, and voltage efficiency is 89.5%, and energy efficiency is 81.4%.
From above description, can find out that the utility model has been realized following technique effect:
The collector plate of the utility model makes electrolyte flow unobstructed, can cover all electrode zones, and the position, dead angle of electrolyte process can not appear not having in whole electrolyte flow field; Electrolyte is more even in the reaction of each position, collector plate flow field, thereby reduces polarization, improves reaction efficiency and electrode and barrier film useful life.Simultaneously, the electrolyte exothermic heat of reaction is more even, guarantees in the charge and discharge process pole plate homogeneity of temperature everywhere.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (14)
1. the collector plate of a flow battery; It is characterized in that; On at least one side of said collector plate (2), be provided with the flow field; Said flow field comprises runner ditch (21) spaced apart and runner ridge (22), and each said runner ditch (21) reduces along the gross area in the cross section of electrolyte flow direction gradually in the said flow field.
2. collector plate according to claim 1 is characterized in that, the gross area in the cross section of each said runner ditch (21) is reduced to reducing gradually of noncontinuity gradually in the said flow field.
3. collector plate according to claim 2 is characterized in that said flow field is configured to bend shape.
4. collector plate according to claim 3 is characterized in that,
Have the runner ditch (21) that many groups are parallel to each other in the said flow field, comprising: entrance channel ditch (21a), intermediate flow channel ditch (21b) and outlet flow ditch (21c) that the said electrolyte flow direction in edge sets gradually;
Said entrance channel ditch (21a), intermediate flow channel ditch (21b) and outlet flow ditch (21c) include many said runner ditches (21); And the sectional area of every runner ditch in said entrance channel ditch (21a), intermediate flow channel ditch (21b) and the outlet flow ditch (21c) is all identical;
Wherein, the runner ditch number in the said entrance channel ditch (21a) is more than the number of the runner ditch in the said intermediate flow channel ditch (21b), and the number of the runner ditch in the said intermediate flow channel ditch (21b) is more than the number of the runner ditch in the said outlet flow ditch (21c).
5. collector plate according to claim 4 is characterized in that, said intermediate flow channel ditch (21b) has the said runner ditch (21) that many groups are parallel to each other; Each number of organizing the runner ditch in the said intermediate flow channel ditch (21b) reduces along said electrolyte flow direction successively gradually.
6. collector plate according to claim 3 is characterized in that,
Have the runner ditch (21) that many groups are parallel to each other in the said flow field, comprising: entrance channel ditch (21a), intermediate flow channel ditch (21b) and outlet flow ditch (21c) that the said electrolyte flow direction in edge sets gradually;
The number of the runner ditch in said entrance channel ditch (21a), intermediate flow channel ditch (21b) and the outlet flow ditch (21c) is all identical;
Wherein, The gross area in the cross section of the runner ditch in the said entrance channel ditch (21a) is greater than the gross area in the cross section of the runner ditch in the said intermediate flow channel ditch (21b), and the gross area in the cross section of the runner ditch in the said intermediate flow channel ditch (21b) is greater than the gross area in the cross section of the runner ditch in the said outlet flow ditch (21c).
7. collector plate according to claim 6 is characterized in that, said entrance channel ditch (21a), intermediate flow channel ditch (21b) and outlet flow ditch (21c) include many said runner ditches (21).
8. collector plate according to claim 7 is characterized in that,
The width of every runner ditch in said entrance channel ditch (21a), intermediate flow channel ditch (21b) and the outlet flow ditch (21c) is all identical;
The degree of depth of every runner ditch in the said entrance channel ditch (21a) is all identical, and the degree of depth of every runner ditch in the said intermediate flow channel ditch (21b) is all identical, and the degree of depth of every runner ditch in the said outlet flow ditch (21c) is all identical;
Wherein, the degree of depth of runner ditch is greater than the degree of depth of said intermediate flow channel ditch (21b) in the said entrance channel ditch (21a), and the degree of depth of said intermediate flow channel ditch (21b) is greater than the degree of depth of the runner ditch in the said outlet flow ditch (21c).
9. collector plate according to claim 8 is characterized in that, said intermediate flow channel ditch (21b) has the runner ditch that many groups are parallel to each other; Each degree of depth of organizing the runner ditch in the said intermediate flow channel ditch (21b) reduces along said electrolyte flow direction successively gradually.
10. collector plate according to claim 7 is characterized in that,
The degree of depth of every runner ditch in said entrance channel ditch (21a), intermediate flow channel ditch (21b) and the outlet flow ditch (21c) is all identical;
The width of every runner ditch in the said entrance channel ditch (21a) is all identical, and the width of every runner ditch in the said intermediate flow channel ditch (21a) is all identical, and the width of every runner ditch in the said outlet flow ditch (21c) is all identical;
Wherein, the width of runner ditch is greater than the width of said intermediate flow channel ditch (21b) in the said entrance channel ditch (21a), and the width of said intermediate flow channel ditch (21b) is greater than the width of the runner ditch in the said outlet flow ditch (21c).
11. collector plate according to claim 10 is characterized in that, said intermediate flow channel ditch (21b) has the runner ditch that many groups are parallel to each other; Each width of organizing the runner ditch in the said intermediate flow channel ditch (21b) reduces along said electrolyte flow direction successively gradually.
12. collector plate according to claim 1 is characterized in that, the gross area in the cross section of each said runner ditch is reduced to gradually and successionally reduces gradually in the said flow field.
13. collector plate according to claim 12 is characterized in that, said flow field is configured to parallel flow field.
14. a flow battery comprises:
Liquid flow frame has center-aisle, and the inlet and the liquid outlet that are connected with said center-aisle;
Collector plate is arranged in the said liquid flow frame center-aisle;
Amberplex is arranged between each said collector plate, and said amberplex and said collector plate form the cavity that holds electrolyte;
Electrode is arranged in the said cavity,
It is characterized in that said collector plate is each described collector plate in the claim 1 to 13, and said collector plate is provided with the flow field towards said amberplex one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202541210U CN202127059U (en) | 2011-07-18 | 2011-07-18 | Collecting plate of liquid flow battery and liquid flow battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202541210U CN202127059U (en) | 2011-07-18 | 2011-07-18 | Collecting plate of liquid flow battery and liquid flow battery |
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| Publication Number | Publication Date |
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| CN202127059U true CN202127059U (en) | 2012-01-25 |
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| CN2011202541210U Expired - Lifetime CN202127059U (en) | 2011-07-18 | 2011-07-18 | Collecting plate of liquid flow battery and liquid flow battery |
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| CN (1) | CN202127059U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299356A (en) * | 2011-07-18 | 2011-12-28 | 中国东方电气集团有限公司 | Current collector of flow battery and flow battery |
| CN102623721A (en) * | 2012-04-06 | 2012-08-01 | 中国东方电气集团有限公司 | Collector plate, bipolar collector plate comprising same, monocell and flow redox cell |
| WO2013139247A1 (en) * | 2012-03-20 | 2013-09-26 | 中国东方电气集团有限公司 | Collector plate, flow battery containing same and flow battery stack |
| CN115642270A (en) * | 2022-12-23 | 2023-01-24 | 南方科技大学 | Snakelike runner structure and redox flow battery with gradient |
-
2011
- 2011-07-18 CN CN2011202541210U patent/CN202127059U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299356A (en) * | 2011-07-18 | 2011-12-28 | 中国东方电气集团有限公司 | Current collector of flow battery and flow battery |
| WO2013139247A1 (en) * | 2012-03-20 | 2013-09-26 | 中国东方电气集团有限公司 | Collector plate, flow battery containing same and flow battery stack |
| CN102623721A (en) * | 2012-04-06 | 2012-08-01 | 中国东方电气集团有限公司 | Collector plate, bipolar collector plate comprising same, monocell and flow redox cell |
| CN102623721B (en) * | 2012-04-06 | 2014-10-08 | 中国东方电气集团有限公司 | Collector plate, bipolar collector plate comprising same, monocell and flow redox cell |
| CN115642270A (en) * | 2022-12-23 | 2023-01-24 | 南方科技大学 | Snakelike runner structure and redox flow battery with gradient |
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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 Corporation |
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Effective date of registration: 20190325 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. |
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