CN116314918A - Proton exchange membrane fuel cell bipolar plate with reversed-phase wavy flow field - Google Patents
Proton exchange membrane fuel cell bipolar plate with reversed-phase wavy flow field Download PDFInfo
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- CN116314918A CN116314918A CN202211552432.4A CN202211552432A CN116314918A CN 116314918 A CN116314918 A CN 116314918A CN 202211552432 A CN202211552432 A CN 202211552432A CN 116314918 A CN116314918 A CN 116314918A
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- 239000000446 fuel Substances 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 55
- 239000012495 reaction gas Substances 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 10
- 239000010410 layer Substances 0.000 description 9
- 239000000376 reactant Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
-
- 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
-
- 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
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of proton exchange membrane fuel cell flow field structures, and discloses an inverse wave-shaped flow field and a bipolar plate. According to the reverse wave-shaped flow field and the bipolar plate, the first flow channel and the second flow channel mutually pass through to form the converging channel, and the converging channel can enable accumulated water of the first flow channel to flow to the second flow channel along the converging channel, so that accumulated water is prevented from accumulating in one flow channel, and vice versa. The liquid water gathered in the porous layer is introduced into the branch flow channel and discharged out through the outlet flow channel, so that the problem of flooding of the cathode flow field can be effectively avoided. In addition, the invention can effectively increase the gas flow space in the flow field plate, effectively improve the oxygen concentration in the porous electrode, improve the output performance of the fuel cell and avoid the lack of local oxygen.
Description
Technical Field
The invention relates to the technical field of flow field structures of proton exchange membrane fuel cells, in particular to a fuel cell flow field and a bipolar plate structure.
Background
It is well known that the power density of fuel cells is limited by two key issues, namely flooding and maldistribution of reactants. Because flow fields play a critical role in mass transport in fuel cells, there is a strong need for a flow field design that improves water management and enhances oxygen transport to address these issues. The conventional parallel flow field structure, as shown in fig. 1, causes significant uneven distribution and flooding problems during gas transport, which severely limit the performance of the fuel cell.
Disclosure of Invention
Based on the above, it is necessary to provide an inverted wave-shaped flow field and bipolar plate proton exchange membrane fuel cell, and the specific scheme is as follows:
in a first aspect, an inverted wave-shaped flow field for delivering a reactant gas includes a plurality of gas channels, converging channels, and ribs, the flow field gas channels and the flow field ribs being alternately arranged.
Further, the flow field gas channel comprises a first flow channel and a second flow channel which are respectively positioned at two sides of the flow field rib and are symmetrically arranged, and the first flow channel and the second flow channel continuously and alternately pass through each other to form a plurality of converging channels.
Further, the first flow channel and the second flow channel are designed by adopting sine functions and/or cosine functions, and the wave periods of the first flow channel and the second flow channel are 180 degrees different.
Further, a plurality of runner waves are arranged on the first runner and the second runner, and the runner waves are sine waves or cosine waves.
Further, the flow channel waves of the flow field gas channels on both sides of each flow field rib are distributed in a right-over manner.
Further, the flow channel wave middle part of the flow field gas channel at one side of each flow field rib is opposite to the flow channel wave middle part of the flow field gas channel at the other side of the flow field rib.
Further, the peak middle part of the flow channel wave of the flow field gas channel at one side of each flow field rib is opposite to the peak middle part of the flow channel wave of the flow field gas channel at the other side of the flow field rib.
Further, the middle of the trough of the flow channel wave of the flow field gas channel on one side of each flow field rib is opposite to the middle of the trough of the flow channel wave of the flow field gas channel on the other side of the flow field rib.
Further, the flow field gas channels are connected with the flow field ribs by smooth curved surfaces.
Further, the number of the branch flow passages is two or more, wherein the distance between any two adjacent branch flow passages is 0.5-1.5mm, and the width of each branch flow passage is 0.5-1.5mm.
In a second aspect, the present application also provides a bipolar plate for delivering a reactant gas, comprising:
the anode plate, the cathode plate, the air inlet channel, the air outlet channel and the air flow field are respectively arranged on two sides of the anode plate, the air inlet channel and the air outlet channel, the anode plate comprises a plurality of flow field air channels and a plurality of flow field ridge bars, the flow field ridge bars and the flow field air channels are alternately arranged, the flow field air channels comprise first flow channels and second flow channels which are respectively arranged on two sides of the anode plate and are symmetrically arranged, and the first flow channels and the second flow channels continuously and alternately pass through each other to form a plurality of converging channels.
The first flow channel and the second flow channel are designed by adopting sine functions and/or cosine functions, and the wave periods of the first flow channel and the second flow channel are 180 degrees different.
Further, a plurality of runner waves are arranged on the first runner and the second runner, and the runner waves are sine waves or cosine waves.
Further, the flow channel waves of the flow field gas channels on both sides of each flow field rib are distributed in a right-over manner.
Further, the flow channel wave middle part of the flow field gas channel at one side of each flow field rib is opposite to the flow channel wave middle part of the flow field gas channel at the other side of the flow field rib.
Further, the peak middle part of the flow channel wave of the flow field gas channel at one side of each flow field rib is opposite to the peak middle part of the flow channel wave of the flow field gas channel at the other side of the flow field rib.
Further, the middle of the trough of the flow channel wave of the flow field gas channel on one side of each flow field rib is opposite to the middle of the trough of the flow channel wave of the flow field gas channel on the other side of the flow field rib.
Further, the flow field gas channels are connected with the flow field ribs by smooth curved surfaces.
Further, the number of the branch flow passages is two or more, wherein the distance between any two adjacent branch flow passages is 0.5-1.5mm, and the width of each branch flow passage is 0.5-1.5mm.
Compared with the prior art, the invention has the following advantages:
according to the reverse wave-shaped flow field and the bipolar plate, the first flow channel and the second flow channel mutually pass through to form the converging channel, and the converging channel can enable accumulated water of the first flow channel to flow to the second flow channel along the converging channel, so that accumulated water is prevented from accumulating in one flow channel, and vice versa. Meanwhile, the converging channel can also generate certain reflux quantity of the reaction gas, and the converging channel can also redistribute the reaction gas of the two cross flow channels. The converging channel solves the problems of uneven distribution of reactive gas in the wave-shaped flow field, uneven distribution of reactive gas in the parallel flow field, poor heat dissipation, flooding and the like. The reversed wave-shaped flow field and the bipolar plate are additionally provided with the converging flow channels on the basis of turbulent flow, more reaction gas is forced to enter the gas diffusion layer and finally reach the catalytic layer, and the liquid water gathered in the porous layer is brought into the branch flow channels and discharged out through the outlet flow channels, so that the problem of flooding of the cathode flow field can be effectively avoided. In addition, the invention can effectively increase the gas flow space in the flow field plate, effectively improve the oxygen concentration in the porous electrode, improve the output performance of the fuel cell and avoid the lack of local oxygen.
The reverse wave flow field has the following advantages: the adjacent flow channels of the reverse wave-shaped flow field can enable the membrane to be in water transmission, so that the membrane has better conductivity. Compared with a parallel flow field, the reverse wave flow field has even film temperature distribution, and improves the uniformity and the performance of heat distribution.
The reverse wavy bipolar plate has the following advantages: no heat convection influence exists between the traditional parallel cooling channels; the reverse wave-shaped cooling channels inside the reverse wave-shaped bipolar plates induce interlayer secondary flow, and heat convection and heat dissipation of the laminated plates are enhanced.
The reverse wave-shaped cooling flow field has the following advantages: the reverse wave-shaped cooling channels form interlayer secondary flow, so that heat convection and temperature uniformity are enhanced, and the problem of poor heat dissipation of the traditional cooling channels is solved.
Drawings
Fig. 1 is a schematic structural view of an inverse wave-shaped flow field bipolar plate according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of an anode plate according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the structure of a cathode plate according to embodiment 1 of the present invention;
FIG. 4 is an enlarged schematic view of the reversed phase wavy gas flow path according to embodiment 1 of the invention;
fig. 5 is a schematic view of the structure of an inverse wave-shaped flow field plate according to embodiment 2 of the present invention;
fig. 6 is a schematic view of the structure of a conventional parallel flow field plate of the comparative example of the present invention;
FIG. 7 is a graph comparing the performance of an inverted wave flow field of example 2 of the present invention and a comparative DC flow field;
FIG. 8 is the average oxygen mass fraction at the cathode of the reversed wave-shaped flow field of example 2 and the conventional DC field of the comparative example of the present invention;
FIG. 9 is the average liquid water content at the cathode of the reversed wave-shaped flow field of example 2 and the conventional DC field of the comparative example of the present invention;
reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 1 | |
4 | |
| 2 | |
5 | |
| 3 | Gas channel (branch flow channel) | 6 | Flow channel wave |
| 3-1 | First flow channel | 6-1 | Sine wave |
| 3-2 | Second flow passage | 6-2 | |
| 100 | |
101 | |
| 111 | |
121 | |
| 7 | Rib | 8 | |
| 9 | |
141 | Anode flow field |
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Example 1
As shown in fig. 1 to 4, the bipolar plate of the reverse wave-shaped flow field of the proton exchange membrane fuel cell in the embodiment of the invention comprises an anode plate (111), a cathode plate (121), an air inlet channel (1), an air outlet channel (2), an intersection channel and a plurality of branch flow channels (3).
The number of the branch flow passages (3) can be one or two or more, and when the number of the branch flow passages (3) is two or more, the branch flow passages are arranged in a parallel mode. The shape of the branch flow passage (3) is a wave-shaped curve, the line shape of the wave-shaped curve is designed by adopting cosine and sine functions, preferably cosine function y=cos (0.6 pi x) and sine function y=sin (0.6 pi x), and pi is the circumferential rate pi. The gas enters the branch flow passage 3 through the inlet flow passage 1, more reaction gas is forced to enter the catalytic layer through the gas diffusion layer by introducing periodical secondary forced convection under the influence of the reversed phase wavy structure, and accumulated water of the first flow passage flows to the second flow passage along the converging passage by the converging passage, so that accumulated water is prevented from accumulating in one flow passage, and vice versa. Meanwhile, the converging channel can also generate certain reflux quantity of the reaction gas, and the converging channel can also redistribute the reaction gas of the two cross flow channels. The reversed-phase wave-shaped flow field remarkably improves the problems of uneven reactant distribution, poor water removal and the like, and remarkably improves the performance of the fuel cell.
The first flow channel (3-1) is designed by sine function y=cos (0.6 pi x) and the second flow channel (3-2) is designed by cosine function y=sin (0.6 pi x), and the wave periods of the first flow channel (3-1) and the second flow channel (3-2) are different by 180 DEG
The structure between the first flow channel (3-1) and the second flow channel (3-2) is a rib (4), and the space between the first flow channel (3-1) and the second flow channel (3-2) is 1mm. The wavelength of the branch flow passage (3) is 10mm, and the amplitude is 2mm. The wavelength of the branch flow channel (3) refers to the distance between two adjacent wave troughs or the distance between two adjacent wave crests; the amplitude of the branch flow channel (3) is the distance from the peak to the trough.
Example 2
As shown in fig. 4, the proton exchange membrane fuel cell in embodiment 2 of the present invention comprises an air inlet channel (1), an air outlet channel (2), a junction channel and a plurality of branch flow channels (3).
The number of the branch flow passages (3) can be one or two or more, and when the number of the branch flow passages (3) is two or more, the branch flow passages are arranged in a parallel mode. The shape of the branch flow passage (3) is a wave-shaped curve, the line shape of the wave-shaped curve is designed by adopting cosine and sine functions, preferably cosine function y=cos (0.6 pi x) and sine function y=sin (0.6 pi x), and pi is the circumferential rate pi. The gas enters the branch flow passage 3 through the inlet flow passage 1, more reaction gas is forced to enter the catalytic layer through the gas diffusion layer by introducing periodical secondary forced convection under the influence of the reversed phase wavy structure, and accumulated water of the first flow passage flows to the second flow passage along the converging passage by the converging passage, so that accumulated water is prevented from accumulating in one flow passage, and vice versa. Meanwhile, the converging channel can also generate certain reflux quantity of the reaction gas, and the converging channel can also redistribute the reaction gas of the two cross flow channels. The reversed-phase wave-shaped flow field remarkably improves the problems of uneven reactant distribution, poor water removal and the like, and remarkably improves the performance of the fuel cell.
The first flow channel (3-1) is designed by sine function y=cos (0.6 pi x) and the second flow channel (3-2) is designed by cosine function y=sin (0.6 pi x), and the wave periods of the first flow channel (3-1) and the second flow channel (3-2) are different by 180 DEG
The structure between the first flow channel (3-1) and the second flow channel (3-2) is a rib (4), and the space between the first flow channel (3-1) and the second flow channel (3-2) is 1mm. The wavelength of the branch flow passage (3) is 10mm, and the amplitude is 2mm. The wavelength of the branch flow channel (3) refers to the distance between two adjacent wave troughs or the distance between two adjacent wave crests; the amplitude of the branch flow channel (3) is the distance from the peak to the trough. In this embodiment, the number of the branch flow passages (3) is 24, the length of the branch flow passage (3) is 51mm, the width is 1mm, and the whole branch flow passage area forms a rectangle of 47mm by 51 mm.
Comparative example: the conventional straight flow channel design is adopted, the parameters are the same as those of the flow channel in the embodiment 2, the length of the branch flow channel is 51mm, the width is 1mm, the height is 1mm, and the rib width is 1mm.
The conventional direct current fields of this example 2 and comparative example were subjected to performance comparison under the same operation conditions as follows: the reactant gas had a humidification of 100%, an operating pressure of 1atm, an operating temperature of 353K, a cathode stoichiometry of 1.5 and an anode stoichiometry of 2. The results of the performance comparison are shown in fig. 3, and the proton exchange membrane fuel cell employing the flow field plate of example 2 has a significantly higher current density in the high current density region than the cell employing the flow field plate of the comparative example. This is because the liquid water in the porous layer in the comparative example is significantly higher than in the example at high current density, severely impeding the reaction of the reaction gas into the catalytic layer; in addition, example 2 has a more uniform oxygen concentration profile. Furthermore, the maximum power density of example 2 was 0.784W/cm 2 Whereas the maximum power density of the comparative example was 0.697W/cm 2 Thus, the performance of example 2 is significantly improved compared with the comparative example.
Research shows that the reverse wave-shaped flow field design improves the output performance of the battery, improves the uniformity of oxygen concentration distribution and increases the water removal energy. Therefore, the reverse wave-shaped flow field can effectively solve the problems of uneven oxygen concentration distribution and flooding of the traditional parallel flow field. In addition, the reverse wavy flow field also effectively improves the problem of uneven oxygen concentration distribution of the wavy flow field.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (4)
1. A proton exchange membrane fuel cell bipolar plate of an inverse wave-shaped flow field for conveying reaction gas, comprising a plurality of gas channels (3), converging channels (5) and ribs (4), wherein the gas channels (3) of the flow field (101) and the ribs (4) of the flow field (101) are alternately arranged, characterized by comprising: the flow field (101) gas channel (3) comprises a first flow channel (3-1) and a second flow channel (3-2) which are respectively positioned at two sides of the flow field rib and are symmetrically arranged, and the first flow channel (3-1) and the second flow channel (3-3) continuously and alternately pass through each other to form a plurality of converging channels (5); the first flow channel (3-1) and the second flow channel (3-2) are designed by adopting sine functions and/or cosine functions, and the wave periods of the first flow channel (3-1) and the second flow channel (3-2) are 180 degrees different; a plurality of runner waves (6) are arranged on the first runner (3-1) and the second runner (3-2), and the runner waves are sine waves (6-1) or cosine waves (6-2); the flow channel waves (6) of the flow field gas channels (3) at two sides of each flow field rib (4) are distributed in a right opposite way; the middle part of the flow channel wave (6) of the flow field gas channel (3) at one side of each flow field rib (4) is opposite to the middle part of the flow channel wave (6) of the flow field gas channel (3) at the other side of the flow field rib (4); the middle of the peak of the flow channel wave (6) of the flow field gas channel (3) at one side of each flow field rib (4) is opposite to the middle of the peak of the flow channel wave (6) of the flow field gas channel (3) at the other side of the flow field rib (4); the middle part of the trough (12) of the flow channel wave (6) of the flow field gas channel (3) at one side of each flow field rib (4) is opposite to the middle part of the trough of the flow channel wave (6) of the flow field gas channel (3) at the other side of the flow field rib (4).
2. The bipolar plate according to claim 1, characterized in that the flow field gas channels (3) are connected to the flow field ribs (4) by smooth curved surfaces.
3. The bipolar plate according to claim 1, wherein the first flow channel (3-1) and the second flow channel (3-2) are two or more, wherein the distance between the first flow channel and the second flow channel is 0.5-1.5mm, and the width of the flow channel (3) is 0.5-1.5mm.
4. A bipolar plate for conveying reaction gas, which is characterized by comprising an anode plate (111) and a cathode plate (121) which are arranged in a vertically stacked manner, wherein the anode plate (111) comprises an anode flow field (141), ribs (7), a hydrogen gas inlet (8) and a hydrogen gas outlet (9); the cathode plate (121) comprises a plurality of gas channels (3), converging channels (5) and ribs (4), and the gas channels (3) of the cathode flow field (101) and the ribs (4) of the cathode flow field (101) are alternately arranged; the flow field gas channel (3) comprises a first flow channel (3-1) and a second flow channel (3-2) which are respectively positioned at two sides of the flow field rib and are symmetrically arranged, and the first flow channel (3-1) and the second flow channel (3-3) continuously and alternately pass through each other to form a plurality of converging channels (5); the first flow channel (3-1) and the second flow channel (3-2) are designed by adopting sine functions and/or cosine functions, and the wave periods of the first flow channel (3-1) and the second flow channel (3-2) are 180 degrees different; a plurality of runner waves (6) are arranged on the first runner (3-1) and the second runner (3-2), and the runner waves are sine waves (6-1) or cosine waves (6-2); the flow channel waves (6) of the flow field gas channels (3) at two sides of each flow field rib (4) are distributed in a right opposite way; the middle part of the flow channel wave (6) of the flow field gas channel (3) at one side of each flow field rib (4) is opposite to the middle part of the flow channel wave (6) of the flow field gas channel (3) at the other side of the flow field rib (4); the middle of the peak of the flow channel wave (6) of the flow field gas channel (3) at one side of each flow field rib (4) is opposite to the middle of the peak of the flow channel wave (6) of the flow field gas channel (3) at the other side of the flow field rib (4); the middle part of the trough (12) of the flow channel wave (6) of the flow field gas channel (3) at one side of each flow field rib (4) is opposite to the middle part of the trough of the flow channel wave (6) of the flow field gas channel (3) at the other side of the flow field rib (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211552432.4A CN116314918A (en) | 2022-12-05 | 2022-12-05 | Proton exchange membrane fuel cell bipolar plate with reversed-phase wavy flow field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211552432.4A CN116314918A (en) | 2022-12-05 | 2022-12-05 | Proton exchange membrane fuel cell bipolar plate with reversed-phase wavy flow field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117448858A (en) * | 2023-10-18 | 2024-01-26 | 三一氢能有限公司 | Flow field structure and electrolytic tank |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117448858A (en) * | 2023-10-18 | 2024-01-26 | 三一氢能有限公司 | Flow field structure and electrolytic tank |
| CN117448858B (en) * | 2023-10-18 | 2024-04-19 | 三一氢能有限公司 | Flow field structure and electrolytic tank |
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