CN102299356A - Current collector of flow battery and flow battery - Google Patents
Current collector of flow battery and flow battery Download PDFInfo
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- CN102299356A CN102299356A CN2011102008803A CN201110200880A CN102299356A CN 102299356 A CN102299356 A CN 102299356A CN 2011102008803 A CN2011102008803 A CN 2011102008803A CN 201110200880 A CN201110200880 A CN 201110200880A CN 102299356 A CN102299356 A CN 102299356A
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Abstract
The invention provides a current collector of a flow battery and a flow battery, wherein, at least one side of the current collector (2) of the flow battery is provided with a flow field comprising flow channel grooves (21) and flow channel ridges (22) that are distributed at intervals. The total area of cross sections of all flow channel grooves along the electrolyte flowing direction decreases gradually. The current collector of the invention effectively solves the problem that the absence of a guiding function in present current collectors can lead to energy waste and nonuniform electrolyte flowing, and also provides a solution to the problem that the gradual lowering of reacting substance concentration in an electrolyte can result in nonuniform reaction rate and nonuniform heat generated from reaction at each part of electrodes, thus improving the charge-discharge performance and the service life of the battery.
Description
Technical field
The present invention 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, with widely used all-vanadium flow battery is example, vanadium redox battery is a kind of of redox flow batteries, has long service life, the energy conversion efficiency height, 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 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 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 as shown in Figure 1, 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 with the direct hot binding 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 liquid stream, electrolyte exists internal flow inhomogeneous in the process of circulation, even liquid flows the position of not flowing through, dead angle, thereby the inhomogeneities that causes voltage between serious polarization phenomena and each monocell, the useful life and the efficient of reduction 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.
Summary of the invention
The present invention 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, according to an aspect of the present invention, 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 successively gradually along the electrolyte flow direction.
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 of entrance channel ditch, intermediate flow channel ditch and 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 successively gradually along the electrolyte flow direction.
Further, the degree of depth of every runner ditch is all identical in entrance channel ditch, intermediate flow channel ditch and the outlet flow ditch; 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 successively gradually along the electrolyte flow direction.
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 a further aspect in the invention, provide a kind of flow battery, having 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 present invention, be provided with the flow field at least one side of collector plate, 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 present invention, like this, electrolyte is accelerated gradually in the flowing velocity in this flow field under the driving of pump, 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 by collector plate of the present invention, electrolyte speed is accelerated gradually, the amount of the reactant of the electrolyte by 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 further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.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 flow battery of the present invention;
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 flow battery of the present invention;
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 flow battery of the present invention;
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 flow battery of the present invention; 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 feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 2 shows the structural representation according to the embodiment one of the collector plate of flow battery of the present invention; 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 21 spaced apart and runner ridge 22, and each runner ditch 21 reduces gradually along the gross area in the cross section of electrolyte flow direction 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: entrance channel ditch 21a, the 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, in order to make electrolyte more even at the flow field medium velocity, intermediate flow channel ditch 21b has the runner ditch 21 that many groups are parallel to each other; Each number of organizing the runner ditch among the intermediate flow channel ditch 21b reduces successively gradually along the electrolyte flow direction.
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, make 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 offset the reduction of the reaction rate that reactant concentration reduces to cause.
Simultaneously, as 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: entrance channel ditch 21a, the 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, in order to make electrolyte more even at the flow field medium velocity, 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 among the intermediate flow channel ditch 21b reduces successively gradually along the electrolyte flow direction.
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, 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, in order to make electrolyte more even at the flow field medium velocity, intermediate flow channel ditch 21b has the runner ditch that many groups are parallel to each other; Each width of organizing the runner ditch among the intermediate flow channel ditch 21b reduces successively gradually along the electrolyte flow direction.
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 gradually, width among every group of intermediate flow channel ditch 21b also reduces 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 present invention.At this moment, to shown in Figure 9, in embodiment four, the flow field is configured to parallel flow field as Fig. 8.The degree of depth of this parallel flow field reduces gradually along the electrolyte flow direction.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 present invention 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 technical solution of the present invention design vanadium redox battery, be exemplified below:
Example 1:
But as the collector plate material, carve the flow field thereon 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 of forming with this collector plate and amberplex and graphite felt electrode 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 thereon 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 of forming with this collector plate and amberplex and graphite felt electrode 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 thereon 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 of forming with this collector plate and amberplex and graphite felt electrode discharges and recharges coulombic efficiency, and voltage efficiency is 89.5%, and energy efficiency is 81.4%.
As can be seen from the above description, the present invention has realized following technique effect:
Collector plate of the present invention 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 above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the collector plate of a flow battery, it is characterized in that, on at least one side of described collector plate (2), be provided with the flow field, described flow field comprises runner ditch (21) spaced apart and runner ridge (22), and each described runner ditch (21) reduces gradually along the gross area in the cross section of electrolyte flow direction in the described flow field.
2. collector plate according to claim 1 is characterized in that, the gross area in the cross section of each described runner ditch (21) is reduced to reducing gradually of noncontinuity gradually in the described flow field.
3. collector plate according to claim 2 is characterized in that described flow field is configured to bend shape.
4. collector plate according to claim 3 is characterized in that,
Have the runner ditches (21) that many groups are parallel to each other in the described flow field, comprising: the entrance channel ditch (21a), intermediate flow channel ditch (21b) and the outlet flow ditch (21c) that set gradually along described electrolyte flow direction;
Described entrance channel ditch (21a), intermediate flow channel ditch (21b) and outlet flow ditch (21c) include many described runner ditches (21), and the sectional area of every runner ditch in described 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 described entrance channel ditch (21a) is more than the number of the runner ditch in the described intermediate flow channel ditch (21b), and the number of the runner ditch in the described intermediate flow channel ditch (21b) is more than the number of the runner ditch in the described outlet flow ditch (21c).
5. collector plate according to claim 4 is characterized in that, described intermediate flow channel ditch (21b) has the described runner ditch (21) that many groups are parallel to each other; Each number of organizing the runner ditch in the described intermediate flow channel ditch (21b) reduces successively gradually along described electrolyte flow direction.
6. collector plate according to claim 3 is characterized in that,
Have the runner ditches (21) that many groups are parallel to each other in the described flow field, comprising: the entrance channel ditch (21a), intermediate flow channel ditch (21b) and the outlet flow ditch (21c) that set gradually along described electrolyte flow direction;
The number of the runner ditch in described 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 described entrance channel ditch (21a) is greater than the gross area in the cross section of the runner ditch in the described intermediate flow channel ditch (21b), and the gross area in the cross section of the runner ditch in the described intermediate flow channel ditch (21b) is greater than the gross area in the cross section of the runner ditch in the described outlet flow ditch (21c).
7. collector plate according to claim 6 is characterized in that, described entrance channel ditch (21a), intermediate flow channel ditch (21b) and outlet flow ditch (21c) include many described runner ditches (21).
8. collector plate according to claim 7 is characterized in that,
The width of every runner ditch in described 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 described entrance channel ditch (21a) is all identical, and the degree of depth of every runner ditch in the described intermediate flow channel ditch (21b) is all identical, and the degree of depth of every runner ditch in the described outlet flow ditch (21c) is all identical;
Wherein, the degree of depth of runner ditch is greater than the degree of depth of described intermediate flow channel ditch (21b) in the described entrance channel ditch (21a), and the degree of depth of described intermediate flow channel ditch (21b) is greater than the degree of depth of the runner ditch in the described outlet flow ditch (21c).
9. collector plate according to claim 8 is characterized in that, described 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 described intermediate flow channel ditch (21b) reduces successively gradually along described electrolyte flow direction.
10. collector plate according to claim 7 is characterized in that,
The degree of depth of every runner ditch in described 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 described entrance channel ditch (21a) is all identical, and the width of every runner ditch in the described intermediate flow channel ditch (21a) is all identical, and the width of every runner ditch in the described outlet flow ditch (21c) is all identical;
Wherein, the width of runner ditch is greater than the width of described intermediate flow channel ditch (21b) in the described entrance channel ditch (21a), and the width of described intermediate flow channel ditch (21b) is greater than the width of the runner ditch in the described outlet flow ditch (21c).
11. collector plate according to claim 10 is characterized in that, described 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 described intermediate flow channel ditch (21b) reduces successively gradually along described electrolyte flow direction.
12. collector plate according to claim 1 is characterized in that, the gross area in the cross section of each described runner ditch is reduced to gradually and successionally reduces gradually in the described flow field.
13. collector plate according to claim 12 is characterized in that, described 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 described center-aisle;
Collector plate is arranged in the described liquid flow frame center-aisle;
Amberplex is arranged between each described collector plate, and described amberplex and described collector plate form the cavity that holds electrolyte;
Electrode is arranged in the described cavity,
It is characterized in that described collector plate is each described collector plate in the claim 1 to 13, and described collector plate is provided with the flow field towards described amberplex one side.
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| CN2011102008803A CN102299356A (en) | 2011-07-18 | 2011-07-18 | Current collector of flow battery and flow battery |
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| CN2011102008803A CN102299356A (en) | 2011-07-18 | 2011-07-18 | Current collector of flow battery and flow battery |
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Cited By (9)
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| CN102593481A (en) * | 2012-03-14 | 2012-07-18 | 中国东方电气集团有限公司 | Flow battery, battery stack, battery system and control method for electrolyte thereof |
| CN102593482A (en) * | 2012-03-20 | 2012-07-18 | 中国东方电气集团有限公司 | Collector plate and flow battery and flow battery stack containing same |
| CN102931426A (en) * | 2012-10-31 | 2013-02-13 | 中国东方电气集团有限公司 | Fan-shaped flow cell, fan-shaped flow cell stack and circular flow cell stack |
| CN104300163A (en) * | 2013-07-18 | 2015-01-21 | 中国科学院大连化学物理研究所 | Electrode frame of redox flow battery and electric pile thereof |
| CN106876762A (en) * | 2015-12-12 | 2017-06-20 | 中国科学院大连化学物理研究所 | A kind of flow battery bipolar plates that interdigital runner is deepened containing broadening |
| CN108550875A (en) * | 2018-04-25 | 2018-09-18 | 武汉理工大学 | A kind of flow channels for proton exchange membrane fuel cells |
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| CN102593481A (en) * | 2012-03-14 | 2012-07-18 | 中国东方电气集团有限公司 | Flow battery, battery stack, battery system and control method for electrolyte thereof |
| CN102593481B (en) * | 2012-03-14 | 2014-07-02 | 中国东方电气集团有限公司 | Flow battery, battery stack, battery system and control method for electrolyte thereof |
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| 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 |
| CN102593482B (en) * | 2012-03-20 | 2015-02-04 | 中国东方电气集团有限公司 | Collector plate and flow battery and flow battery stack containing same |
| CN102931426A (en) * | 2012-10-31 | 2013-02-13 | 中国东方电气集团有限公司 | Fan-shaped flow cell, fan-shaped flow cell stack and circular flow cell stack |
| CN102931426B (en) * | 2012-10-31 | 2015-04-29 | 中国东方电气集团有限公司 | Fan-shaped flow cell, fan-shaped flow cell stack and circular flow cell stack |
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| CN110036515A (en) * | 2016-12-06 | 2019-07-19 | 昭和电工株式会社 | Collector plate and redox flow batteries |
| US10790531B2 (en) | 2016-12-06 | 2020-09-29 | Showa Denko K.K. | Collector plate and redox flow battery |
| CN108550875A (en) * | 2018-04-25 | 2018-09-18 | 武汉理工大学 | A kind of flow channels for proton exchange membrane fuel cells |
| CN113889640A (en) * | 2020-07-01 | 2022-01-04 | 中国科学院大连化学物理研究所 | Flow battery galvanic pile |
| CN113889640B (en) * | 2020-07-01 | 2023-10-20 | 中国科学院大连化学物理研究所 | Flow battery pile |
| CN115172794A (en) * | 2022-07-31 | 2022-10-11 | 天津大学 | Rib width gradually-changed flow channel structure for flow battery and flow battery |
| CN115172794B (en) * | 2022-07-31 | 2024-10-01 | 天津大学 | Rib width gradual change type flow channel structure for flow battery and flow battery |
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