CN114122445A - High power flow battery plate frame and carbon felt runner design - Google Patents
High power flow battery plate frame and carbon felt runner design Download PDFInfo
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- CN114122445A CN114122445A CN202011487751.2A CN202011487751A CN114122445A CN 114122445 A CN114122445 A CN 114122445A CN 202011487751 A CN202011487751 A CN 202011487751A CN 114122445 A CN114122445 A CN 114122445A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
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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
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- Y02E60/50—Fuel cells
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Abstract
The high-power flow battery plate frame and carbon felt runner design comprises a plate frame main body and a carbon felt runner, wherein a positive manifold inlet, a negative manifold inlet, a positive manifold outlet and a negative manifold outlet which are distributed in central symmetry are processed on the plate frame main body; the inlet of the negative manifold and the outlet of the negative manifold are communicated with a carbon felt runner through a flow equalizing channel, and the carbon felt runner is in an interdigital runner form; the carbon felt flow passage is in a left-right swinging type wave shape or an up-down fluctuation type wave shape. The flow equalizing channels and the subarea flow channels are symmetrically distributed, so that the distribution uniformity of the electrolyte is improved, and the flow resistance is reduced. The carbon felt interdigital flow channels in different forms are adopted, and the left-right swinging type and up-down fluctuation type wavy carbon felt flow channels are beneficial to improving the performance of the galvanic pile and reducing the concentration polarization influence and flow resistance. The width of the boss of the flow equalizing channel is increased, so that the carbon felt channel is converted into a flow mode of an interdigital channel, the matching mode of the channel is simple, and the carbon felt is not easy to deform when being pressed.
Description
Technical Field
The invention belongs to the technical field of flow batteries, and particularly relates to a high-power flow battery plate frame and carbon felt flow channel design.
Background
The electricity quantity required by China every year is huge, the use of non-renewable energy sources is gradually reduced year by year, and energy storage devices of renewable energy sources, including wind energy, solar energy, tidal energy and the like, are continuously improved. After commercialization of wind power generators and solar photovoltaic panels, the utilization rate of renewable energy sources is higher and higher, storage batteries are generally adopted for storing electric quantity at present, and the problems of industrial pollution, safety, service life and the like caused by the storage batteries are all to be solved.
The redox flow battery system is taken as one of energy storage devices, and is regarded as the most ideal energy storage technology in the field of large-scale energy storage due to the advantages of high starting speed, rapid charging and discharging response, safe and reliable operation, strong overload overdischarging capacity, mutual independence of factors of output power and storage capacity of the redox flow battery system and the like. For developing countries suffering from power shortage for a long time, the resources such as wind energy, solar energy and the like are abundant, and renewable energy sources can be fully utilized by adopting the flow battery system, so that the power requirements of the countries are met. For some hospitals and troops, the flow battery can also be used as a standby power supply, so that the problems of sudden power interruption and the like are avoided.
The commercialization process of the flow battery in China is slow, and a plurality of problems still exist at present to be solved. The flow battery system has a complex structure, and the electric pile is a core part of the battery system. The electric pile comprises: the device comprises a liquid flow plate frame, an ion exchange membrane, a sealing gasket, a bipolar plate, a carbon felt, a collector plate, an insulating plate, an end plate and the like. The frame design of the liquid flow battery plate is an important part of the galvanic pile, and a flow equalizing channel is generally designed in the plate frame, so that electrolyte can be uniformly distributed in a carbon felt reaction area. The distribution uniformity of the electrolyte in the carbon felt directly influences the service life of the ionic membrane and the overall consistency of the voltage of the single sheet of the electric pile. Therefore, the design of uniform flow channels in plate frames has been the direction of important research.
Due to the low power density of the flow battery, the active area of the carbon felt must be increased or the power density of the carbon felt must be increased in order for the power of the stack to meet the requirements. The power can be improved by increasing the area of the carbon felt, but the design of the flow equalizing channel is more complicated, the galvanic pile is too large, the system integration is difficult, and the cost can be improved. Therefore, many scholars can perform heat treatment and acid treatment on the carbon felt, the treatment can improve the power density of the carbon felt to a certain extent, the selection of the catalyst and the electroplating mode also influence the performance of the carbon felt, but the performance improvement of the carbon felt is not greatly changed by the above method.
In patent CN 111224144 a, runners of different shapes are designed in a carbon felt, and it is found that the voltage efficiency of the interdigital channel is improved by 7.2% and the energy efficiency is improved by 7.1% compared with a carbon felt without a channel, which indicates that the performance of the stack can be greatly improved by arranging a rectangular interdigital channel in the carbon felt. However, the flow equalizing channels in the patent are not designed, and the electrolyte flow in the carbon felt flow channels is not uniform. The rectangular interdigital flow channel in the carbon felt is in a penetrating type, and although the carbon felt is convenient to process, the carbon felt is easier to deform and is troublesome to fix, and the flow channel extruded by the carbon felt is larger in deformation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the interdigitated flow channels with different shapes designed in the carbon felt, so that a plate frame flow equalizing channel can be effectively combined with the carbon felt flow channel, the uniform distribution of the carbon felt electrolyte is improved, the power density of the carbon felt is also improved, the energy efficiency of a galvanic pile is improved, the resistance of the galvanic pile is reduced, and the service life of the galvanic pile is prolonged.
In order to achieve the purpose, the invention adopts the following technical scheme:
the high-power flow battery plate frame and carbon felt runner design comprises a plate frame main body and a carbon felt runner, wherein a positive manifold inlet, a negative manifold inlet, a positive manifold outlet and a negative manifold outlet which are distributed in central symmetry are processed on the plate frame main body; the method is characterized in that: the negative manifold inlet and the negative manifold outlet are communicated with the carbon felt runner through a flow equalizing channel, and the carbon felt runner is in an interdigital runner form; the carbon felt flow channel is in a left-right swinging type wave shape or an up-down fluctuation type wave shape.
It is further characterized in that: the inlet of the negative manifold and the flow equalizing channel, and the outlet of the negative manifold and the flow equalizing channel are connected through a serpentine channel.
Further: the flow equalizing channel is divided into a plurality of subarea flow channels, and inlets of the subarea flow channels are connected with the inclined main channel; the adjacent flow equalizing channels are spaced by bosses; the carbon felt flow channel comprises a passive liquid inlet flow channel and an active liquid inlet flow channel which are arranged at intervals; the diffusion area flow equalizing channel positioned on the inlet side of the negative manifold is communicated with one end of the active liquid inlet channel, and the diffusion area flow equalizing channel positioned on the outlet side of the negative manifold is communicated with one end of the passive liquid inlet channel; the other ends of the passive liquid inlet flow channel and the active liquid inlet flow channel are sealed by the bosses.
Preferably: and the end parts of the bosses and the corners of the partition flow channels are provided with fillets.
The width and the depth of the passive liquid inlet flow channel and the active liquid inlet flow channel are consistent, the distance a is 1-10 times of the width b of the flow channel, and the width of the boss of each partition is 2 x a + b; the passive liquid inlet flow channel and the active liquid inlet flow channel are consistent with the width and the depth of the flow equalizing channel.
Except the subarea flow channels on two sides of the subarea flow channel on the inlet side, the geometrical structures of other subarea flow channels are symmetrical, and the number of bosses in the subarea flow channel is odd and is at least 3.
And the passive liquid inlet flow channel at the center of the outlet side leads the electrolyte into the flow channels of the two side partitions through the two central branch flow channels.
The number of the active liquid inlet flow channels is even, and the number of the passive liquid inlet flow channels is odd.
Preferably:
when the carbon felt flow channel is in a left-right swinging wave shape, the carbon felt flow channel is connected with the flow equalizing channel and is a straight flow channel with the length L11-20 mm; distance L between center line of flow channel and side edge of carbon felt01-50 mm; left-right swinging type wave-shaped runner period length L31-10 cm, and 5-20 cycles; deflection angle theta15 to 80 degrees; fillet R15-50 mm; flow passage section L4＝L5The length is 10-100 mm;
when the carbon felt flow channel is in an up-and-down wavy shape, the carbon felt flow channel is connected with the flow equalizing channel and is a straight flow channel with the length L71-20 mm; average depth L of flow channel61-10 mm; deflection angle theta25 to 60 degrees; one period L of up-and-down undulation type wave-shaped carbon felt flow passage111-10 cm, and 5-20 cycles; fillet R25-50 mm; flow passage section L9＝L10＝2×L8。
It is further characterized in that: sealing rings are arranged on the inlet of the positive manifold, the inlet of the negative manifold, the outlet of the positive manifold and the outlet of the negative manifold; the edge of the plate frame main body is provided with a bolt fixing hole; and a diffusion area center supporting pad is arranged at the center of the partition flow channel.
Compared with the plate frame flow passage structure in the existing market, the invention has the following advantages:
(1) the flow equalizing channel structure adopts a symmetrical partition structure, and partition runners are also symmetrically distributed, so that the distribution uniformity of electrolyte is improved, and the flow resistance is reduced.
(2) The carbon felt interdigitated flow channels in different forms are adopted, and the left-right swinging type and up-down fluctuation type wavy carbon felt flow channels are beneficial to improving the performance of the pile and reducing the concentration polarization influence and the flow resistance.
(3) The flow channel has the advantages that the width of the lug boss of the flow equalizing flow channel is increased, so that the carbon felt flow channel is converted into a flow mode of an interdigital flow channel, the matching mode of the flow channel is simple, and the carbon felt is not easy to deform when being pressed.
Drawings
Fig. 1 is a front 3D structural view of a plate frame main body.
Fig. 2 is a 3D structure view of the back side of the plate frame body.
Fig. 3 is a partial enlarged view of the plate frame inlet flow equalizing channel.
Fig. 4 is an enlarged view of the plate frame outlet flow equalization channel and a portion thereof.
FIG. 5 is a left-right swing type wavy carbon felt flow channel trace diagram.
FIG. 6 is a partial enlarged view of the undulating carbon felt flow path.
Fig. 7 is a track diagram of up-and-down undulating carbon felt flow paths.
Fig. 8 shows an arrangement of the undulating carbon felt according to the present invention.
Fig. 9 is a rectangular carbon felt arrangement.
Fig. 10 is a no flow channel carbon felt arrangement.
Detailed Description
As shown in fig. 1 and 2, a high-power flow battery plate frame and carbon felt runner design includes a plate frame main body 2 and a carbon felt runner 3, wherein a positive manifold inlet 7, a negative manifold inlet 5, a positive manifold outlet 8 and a negative manifold outlet 6 are processed on the plate frame main body 2 along the flow direction of an electrolyte and are distributed in a centrosymmetric manner; the cathode manifold inlet 5 and the cathode manifold outlet 6 are communicated with the carbon felt runner 3 through a flow equalizing channel 17, and the carbon felt runner 3 adopts an interdigital runner form; the carbon felt runner 3 is in a left-right swinging type wave shape. And positive manifold sealing rings 9 are arranged on the front surface of the plate frame main body 2, and the inlet 7 of the positive manifold and the outlet 8 of the positive manifold. And a cathode runner sealing ring 4 is arranged around the cathode runner. Plate frame 2 reverse side negative pole manifold import 5 and 6 positions of negative pole manifold export are provided with plate frame reverse side negative pole manifold sealing washer 10 respectively, and anodal manifold import 7 and anodal manifold export 8 department are provided with positive pole manifold sealing washer 11 of plate frame reverse side. And a carbon felt area sealing ring 12 is arranged around the carbon felt. The edge of the plate frame main body 2 is provided with a bolt fixing hole 1. The flow equalizing channel 17 is divided into a plurality of subarea flow channels 16, and the center positions of the subarea flow channels 16 are respectively provided with a cathode inlet diffusion area center supporting pad 14 and a cathode outlet diffusion area center supporting pad 24.
As shown in fig. 1 to 4, the negative manifold inlet 5 and the flow equalizing channel 16, and the negative manifold outlet 6 and the flow equalizing channel are connected by the negative inlet serpentine channel 13 and the negative outlet serpentine channel 23, respectively.
As shown in fig. 3 and 4, the flow equalizing channel 17 is divided into a plurality of subarea flow channels 16, and the inlet of each subarea flow channel 16 is connected with an inclined main channel 18; adjacent flow equalizing channels 17 are separated by bosses 19. The carbon felt flow channel 3 comprises a passive liquid inlet flow channel 21 and an active liquid inlet flow channel 22 which are arranged at intervals, the number of the active liquid inlet flow channels 22 is even, and the number of the passive liquid inlet flow channels 21 is odd. The diffusion region flow channel located on the side of the inlet 5 of the negative manifold is communicated with one end of the active liquid inlet flow channel 22, and the diffusion region flow channel located on the side of the outlet 6 of the negative manifold is communicated with one end of the passive liquid inlet flow channel 21. The other ends of the passive liquid inlet flow passage 21 and the active liquid inlet flow passage 22 are closed by a boss 19. The ends of the bosses 19 and the corners of the zoned flow channels 16 are rounded.
The width and the depth of the passive liquid inlet flow channel 21 and the active liquid inlet flow channel 22 are consistent, the distance a is 1-10 times of the width b of the flow channel, and the width of the boss 19 of each partition is 2 multiplied by a + b. The passive liquid inlet flow channel 21 and the active liquid inlet flow channel 22 are consistent with the width and the depth of the flow equalizing channel 16.
As shown in fig. 3, except for the inlet-side partitioned flow passage 16, each of the other partitioned flow passages 16 has a symmetrical geometric structure, and the number of the bosses 19 in the partitioned flow passage 16 is odd and is at least 3.
As shown in fig. 4, the passive inlet channel 21 in the center of the outlet side introduces the electrolyte into the two side-partitioned channels 16 through the two center branch channels 25.
As shown in FIG. 5, when the carbon felt flow channel 3 is in a left-right swinging wave shape, the carbon felt flow channel is connected with the flow equalizing channel 16 to form a straight flow channel with a length L11-20 mm; distance L between center line of flow channel and side edge of carbon felt0Is 1 to 50 mm. Left-right swinging type wave-shaped runner period length L31-10 cm, and 5-20 cycles; deflection angle theta15 to 80 degrees; fillet R15-50 mm; flow passage section L4＝L5The length is 10-100 mm.
In another form, as shown in fig. 6 and 7, the carbon felt flow path 3 is in an up-and-down wavy shape. In this case, a straight flow channel is connected to the flow equalizing channel 16, and the length L of the straight flow channel is71-20 mm; average depth L of flow channel61-10 mm; deflection angle theta2Is 5 to 60 degrees. One period L of up-and-down undulation type wave-shaped carbon felt flow passage111-10 cm, and 5-20 cycles; fillet R25-50 mm; flow passage section L9＝L10＝2×L8。
When the carbon felt flow equalizing device works, electrolyte is introduced from the inlet 5 of the negative manifold, passes through the snake-shaped channel 13 of the negative inlet, and then enters the diffusion zone of the negative inlet, the main channels are obliquely and symmetrically arranged, the electrolyte is respectively introduced into the 6 subarea flow channels 16, the length of the boss 19 in each subarea flow channel 16 controls the flow of the flow equalizing channel 17, so that the flow flowing into the carbon felt flow channel 3 is equalized, the electrolyte in the carbon felt follows the flow mode of the interdigital flow channel, is forced to flow into the carbon felt by the active liquid inlet flow channel 22, then flows into the passive liquid inlet flow channel 21, and then flows into the diffusion zone of the negative outlet until the electrolyte flows out of the outlet 6 of the negative manifold. The anode electrolyte and the cathode electrolyte have the same flowing mode, the anode plate frame, the cathode plate frame, the carbon felt flow channel, the ion membrane, the sealing rubber strip and the like are fixed into a whole pile through bolts, and the specific number of the plates is determined by the required power.
Keeping the plate frames consistent, respectively adopting the carbon felt flow channel arrangement modes shown in figure 1, figure 8 and figure 9 to assemble 10 small piles, wherein the area size, the flow channel width and the depth of each carbon felt are consistent. Using an iron-chromium electrolyte, it was tested at 100mA/cm, respectively2And comparing the respective efficiencies.
Table 1 comparison of carbon felt flow cell stack performance using figures 1, 8 and 9 respectively
| Comparative example | Coulombic efficiency | Efficiency of voltage | Energy efficiency |
| FIG. 1 carbon felt flow channel stack | 97.5％ | 87.4％ | 85.5％ |
| Figure 8 carbon felt flow channel stack | 97.4％ | 85.3％ | 83.7％ |
| FIG. 9 carbon felt flow channel stack | 97.1％ | 84.1％ | 82.4％ |
| FIG. 10 carbon felt flow cell stack | 96.7％ | 77.1％ | 75.4％ |
From the above table, the carbon felt interdigital channel can enable the pile efficiency of the pile to reach more than 84%, and the left-right swing type wavy carbon felt flow channel has the highest energy efficiency, which is about 3% higher than that of a rectangular carbon felt flow channel and about 10% higher than that of a carbon-free felt flow channel. The left-right swinging type wavy carbon felt flow channel increases the contact area of electrolyte and the carbon felt in the flow channel, meanwhile, the electrolyte can be disturbed, the electrolyte can be favorably and fully flowed into the carbon felt, the flowing and mass transfer of the electrolyte can be strengthened due to the arrangement of the interdigital channel, the uniform distribution of the electrolyte is favorably realized, the concentration polarization influence is reduced, the flow resistance is reduced, and the efficiency of a galvanic pile is improved.
Claims (10)
1. The high-power flow battery plate frame and carbon felt runner design comprises a plate frame main body and a carbon felt runner, wherein a positive manifold inlet, a negative manifold inlet, a positive manifold outlet and a negative manifold outlet which are distributed in central symmetry are processed on the plate frame main body; the method is characterized in that: the negative manifold inlet and the negative manifold outlet are communicated with the carbon felt runner through a flow equalizing channel, and the carbon felt runner is in an interdigital runner form; the carbon felt flow channel is in a left-right swinging type wave shape or an up-down fluctuation type wave shape.
2. The high power flow battery plate frame and carbon felt flow channel design of claim 1, wherein: the inlet of the negative manifold and the flow equalizing channel, and the outlet of the negative manifold and the flow equalizing channel are connected through a serpentine channel.
3. The high power flow battery plate frame and carbon felt flow channel design of claim 1 or 2, wherein: the flow equalizing channel is divided into a plurality of subarea flow channels, and inlets of the subarea flow channels are connected with the inclined main channel; the adjacent flow equalizing channels are spaced by bosses; the carbon felt flow channel comprises a passive liquid inlet flow channel and an active liquid inlet flow channel which are arranged at intervals; the diffusion area flow equalizing channel positioned on the inlet side of the negative manifold is communicated with one end of the active liquid inlet channel, and the diffusion area flow equalizing channel positioned on the outlet side of the negative manifold is communicated with one end of the passive liquid inlet channel; the other ends of the passive liquid inlet flow channel and the active liquid inlet flow channel are sealed by the bosses.
4. The high power flow battery plate frame and carbon felt flow channel design of claim 3, wherein: and the end parts of the bosses and the corners of the partition flow channels are provided with fillets.
5. The high power flow battery plate frame and carbon felt flow channel design of claim 3, wherein: the width and the depth of the passive liquid inlet flow channel and the active liquid inlet flow channel are consistent, the distance a is 1-10 times of the width b of the flow channel, and the width of the boss of each partition is 2 x a + b; the passive liquid inlet flow channel and the active liquid inlet flow channel are consistent with the width and the depth of the flow equalizing channel.
6. The high power flow battery plate frame and carbon felt flow channel design of claim 3, wherein: except the subarea flow channels on two sides of the subarea flow channel on the inlet side, the geometrical structures of other subarea flow channels are symmetrical, and the number of bosses in the subarea flow channel is odd and is at least 3.
7. The high power flow battery plate frame and carbon felt flow channel design of claim 3, wherein: and the passive liquid inlet flow channel at the center of the outlet side leads the electrolyte into the flow channels of the two side partitions through the two central branch flow channels.
8. The high power flow battery plate frame and carbon felt flow channel design of claim 3, wherein: the number of the active liquid inlet flow channels is even, and the number of the passive liquid inlet flow channels is odd.
9. The high power flow battery plate frame and carbon felt flow channel design of claim 1 or 2, wherein:
when the carbon felt flow channel is in a left-right swinging wave shape, the carbon felt flow channel is connected with the flow equalizing channel and is a straight flow channel with the length L11-20 mm; distance L between center line of flow channel and side edge of carbon felt01-50 mm; left-right swinging type wave-shaped runner period length L31-10 cm, and 5-20 cycles; deflection angle theta15 to 80 degrees; fillet R15-50 mm; flow passage section L4= L5, length of 10-100 mm;
when the carbon felt flow channel is in an up-and-down wavy shape, the carbon felt flow channel is connected with the flow equalizing channel and is a straight flow channel with the length L71-20 mm; average depth L of flow channel61-10 mm; deflection angle theta25 to 60 degrees; one period L of up-and-down undulation type wave-shaped carbon felt flow passage111-10 cm, and 5-20 cycles; fillet R25-50 mm; flow passage section L9 = L10 = 2×L8。
10. The high power flow battery plate frame and carbon felt flow channel design of claim 1 or 2, wherein: sealing rings are arranged on the inlet of the positive manifold, the inlet of the negative manifold, the outlet of the positive manifold and the outlet of the negative manifold; the edge of the plate frame main body is provided with a bolt fixing hole; and a diffusion area center supporting pad is arranged at the center of the partition flow channel.
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| CN209709093U (en) * | 2019-04-22 | 2019-11-29 | 高岩 | A kind of electrode of liquid flow cell sheet frame runner and flow battery runner |
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