CN112103531B - Proton exchange membrane fuel cell bipolar plate based on symmetrical serpentine structure flow field - Google Patents
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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
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
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- H—ELECTRICITY
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- 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
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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
- H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
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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
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- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
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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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04291—Arrangements for managing water in solid electrolyte fuel cell systems
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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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Abstract
The invention discloses a proton exchange membrane fuel cell bipolar plate based on a symmetrical serpentine flow field, which comprises a gas flow field (1) and is characterized in that: the gas flow field (1) is symmetrically distributed in a serpentine shape, a reaction gas inlet (2) and a generated product outlet (10) of the gas flow field (1) are respectively positioned at two ends of one diagonal line of the gas flow field (1) and are distributed in a diagonal direction, and a ridge (3) positioned on a connecting line of the reaction gas inlet (2) and the generated product outlet (10) divides a flow channel from the reaction gas inlet (2) into two serpentine flow channels which are symmetrically arranged. Compared with the traditional serpentine flow field, the symmetrical serpentine flow field overcomes the defect of large pressure drop of the serpentine flow field, enhances the gas transmission performance, makes the gas distribution more uniform, improves the generated water discharge performance of the fuel cell, makes the overall current density distribution more uniform, and improves the overall performance of the fuel cell.
Description
Technical Field
The invention belongs to the technical field of proton exchange membrane fuel cell bipolar plates, and particularly relates to a proton exchange membrane fuel cell bipolar plate based on a symmetrical serpentine flow field.
Background
The proton exchange membrane fuel cell has the advantages of environmental protection, high energy conversion efficiency, low working temperature and the like, has good application prospect, is considered as an ideal energy conversion device, is an indispensable part of the fuel cell, and has important function of the bipolar plate in the performance of the fuel cell.
The bipolar plates are provided with flow fields in various shapes, reaction gas diffuses to a gas catalyst layer through the flow fields to generate chemical reaction on the catalyst layer, liquid water of reaction products is discharged out of the fuel cell through the flow fields, the uneven distribution of the gas can cause the accumulation of local reactants to form local hot spots and cold spots, the liquid water cannot be discharged in time, the reaction rate of the reaction gas on the surface of a catalyst can be influenced, and the performance of the fuel cell can be reduced.
The flow field of the bipolar plate of the common proton exchange membrane fuel cell comprises a parallel flow field, a snake-shaped flow field, an interdigitated flow field and the like. The parallel flow field has a plurality of runners between the inlet and the outlet, and has the advantages that the pressure difference between the runners is small, but the defects are that: when one flow channel is blocked, gas can be dispersed to other flow channels, so that the gas distribution is uneven; the serpentine flow field has the advantages that large pressure drop is easy to drain, but gas is unevenly distributed at the middle rear part of the flow channel, so that the performance of the fuel cell is influenced; the interdigitated flow field promotes gas convection, but the pressure difference is too large, so that the interdigitated flow field is not suitable for a high-power electric pile.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a proton exchange membrane fuel cell bipolar plate based on a symmetrical serpentine structure flow field, which can improve the distribution nonuniformity of fuel cell reaction gas, reduce the current density distribution nonuniformity of the fuel cell caused by the nonuniform gas distribution, enhance the drainage performance of the fuel cell, timely remove reaction generated water, avoid the accumulation and blockage of reactants, and enhance the electrochemical performance and service life of the fuel cell.
The invention aims to solve the problems by the following technical scheme:
the utility model provides a proton exchange membrane fuel cell bipolar plate based on symmetrical snakelike structure flow field, includes the gas flow field, its characterized in that: the gas flow field is symmetrically distributed in a snake shape, a reaction gas inlet and a generated product outlet of the gas flow field are respectively positioned at two ends of one diagonal line of the gas flow field and are distributed in a diagonal direction, and a ridge positioned on a connecting line of the reaction gas inlet and the generated product outlet divides a flow channel from the reaction gas inlet into two parts of snake-shaped flow channels which are symmetrically arranged.
The snakelike runner include linear type runner, turn around changeover portion and discharge segment runner, the linear type runner all be on a parallel with the ridge setting, the initiating terminal of initial linear type runner is the initiating terminal of the terminal intercommunication discharge segment runner of the linear type runner of reaction gas import, afterbody, the initiating terminal of the terminal of initial linear type runner, the linear type runner of afterbody and the linear type runner between the linear type runner of initial linear type runner and afterbody all communicate through the turn around changeover portion.
The linear runners are separated by ridges.
The turning transition section comprises an expanding transition section, a linear transition section and a zooming transition section which are sequentially communicated, wherein the width of the linear transition section is smaller than that of the linear flow channel, the width of the inlet end of the expanding transition section is equal to that of the linear flow channel, the width of the outlet end of the expanding transition section is equal to that of the linear transition section, the maximum width of the expanding transition section is larger than that of the linear flow channel, the width of the inlet end of the zooming transition section is equal to that of the linear transition section, the width of the outlet end of the zooming transition section is equal to that of the linear flow channel, and the maximum width of the zooming transition section is smaller than that of the linear flow channel.
The radius of the excircle corner of the turning transition section is larger than that of the fillet corner of the turning transition section.
The depth of the serpentine flow channel is the same as the height of the ridge.
The width of the linear flow channel is the same as that of the ridge, and the relationship between the width a of the linear flow channel and the width b of the discharge section flow channel is as follows: b is less than or equal to 0.8 a.
The relationship among the width a of the linear flow channel, the width b of the discharge section flow channel and the number n of the ridges is as follows:
in the formula, theta is an included angle between a diagonal line of the gas flow field and one side of the gas flow field, c is a side length of one side forming the included angle theta with the diagonal line of the gas flow field, and the value range of n is an odd number not less than 5.
The gas flow field is arranged in the plate surface of the bipolar plate, the bipolar plate surface around the gas flow field is also provided with a sealing groove with a semicircular section, and the peripheral side of the sealing groove is also provided with a certain number of bolt holes and positioning holes.
The two side walls of the bipolar plate are also provided with thread sealing flow guide holes respectively communicated with the reaction gas inlet and the generated product outlet, and the two side walls of the bipolar plate are also respectively provided with temperature detection holes corresponding to the thread sealing flow guide holes one by one.
Compared with the prior art, the invention has the following advantages:
compared with the traditional serpentine flow field, the symmetrical serpentine flow field overcomes the defect of large pressure drop of the serpentine flow field, enhances the gas transmission performance, makes the gas distribution more uniform, improves the generated water discharge performance of the fuel cell, makes the overall current density distribution more uniform, and improves the overall performance of the fuel cell.
The flow field structure of the symmetrical snake-shaped flow field on the bipolar plate is symmetrically distributed, reaction gas is uniformly distributed when the bipolar plate is used, heat generated by electrochemical reaction is diffused from the middle to the periphery, local cold points and hot points are not generated, and the electrochemical performance of a fuel cell is improved.
The change of the sectional area of the corner between the flow channel and the ridge of the symmetrical serpentine flow field on the bipolar plate increases the speed of reaction gas at the corner and reduces the concentration difference between the flow channel and the flow channel.
The width of the discharge section flow channel and the width of the turn-around transition section of the symmetrical snake-shaped flow field on the bipolar plate are smaller than those of the linear flow channel, the change of the sectional area of the flow channel enhances the drainage performance of the bipolar plate, takes away water generated by reaction in time and increases the reaction efficiency of a fuel cell.
The air inlet and product flow guide channels of the symmetrical serpentine flow field on the bipolar plate are both in hole-type structures and are in threaded sealing structures, so that the air tightness of an inlet and an outlet is guaranteed.
The symmetrical serpentine flow field on the bipolar plate can effectively prevent gas leakage caused by machining errors of the bipolar plate by arranging a circle of sealing groove at the periphery of the flow field.
Drawings
FIG. 1 is a plan view of a bipolar plate of a PEMFC based on a symmetrical S-shaped flow field according to the present invention;
FIG. 2 is a three-dimensional structure diagram of a proton exchange membrane fuel cell bipolar plate based on a symmetrical serpentine flow field;
figure 3 is a cell electrochemical performance curve for a pem fuel cell bipolar plate using a symmetrical serpentine flow field in accordance with the present invention.
Wherein: 1-gas flow field; 2-a reaction gas inlet; 3-spine; 4-linear type flow channel; 5-turning transition section; 51-an expansion transition section; 52-a linear transition section; 53-zoom transition; 6-a discharge section flow channel; 7-fillet; 8-bullnose; 9-sealing the diversion hole by screw thread; 10-outlet of the product; 11-bolt holes; 12-temperature detection hole; 13-positioning holes; 14-seal groove.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1-2: a proton exchange membrane fuel cell bipolar plate based on a symmetrical serpentine structure flow field comprises a gas flow field 1, wherein the gas flow field 1 is symmetrically and snakelike distributed, a reaction gas inlet 2 and a generated product outlet 10 of the gas flow field 1 are respectively positioned at two ends of one diagonal line of the gas flow field 1 and are diagonally distributed, and a ridge 3 positioned on a connecting line of the reaction gas inlet 2 and the generated product outlet 10 divides a flow channel from the reaction gas inlet 2 into two serpentine flow channels which are symmetrically arranged. Wherein snakelike runner includes linear type runner 4, turn around changeover portion 5 and discharge segment runner 6, linear type runner 4 all be on a parallel with ridge 3 setting, the initiating terminal of initial linear type runner 4 is the initiating terminal of reaction gas inlet 2, the linear type runner 4's of afterbody end intercommunication discharge segment runner 6, the linear type runner 4's of initial linear type runner 4's end, the initiating terminal of the linear type runner 4 of afterbody and the linear type runner 4 between the linear type runner 4 of initial linear type runner 4 and afterbody all communicate through turn around changeover portion 5, all adopt ridge 3 to separate between the linear type runner 4.
Further, the turning transition section 5 comprises an expanding transition section 51, a linear transition section 52 and a zooming transition section 53 which are sequentially communicated, wherein the width of the linear transition section 52 is smaller than that of the linear flow channel 4, the inlet end width of the expanding transition section 51 is equal to that of the linear flow channel 4, the outlet end width of the expanding transition section 51 is equal to that of the linear transition section 52, the maximum width of the expanding transition section 51 is larger than that of the linear flow channel 4, the inlet end width of the zooming transition section 53 is equal to that of the linear transition section 52, the outlet end width of the zooming transition section 53 is equal to that of the linear flow channel 4, and the maximum width of the zooming transition section 53 is smaller than that of the linear flow channel 4; the radius of the external fillet 8 of the turning transition section 5 is larger than that of the internal fillet 7 of the turning transition section 5, and a preferable scheme is that the radius of the external fillet 8 is twice that of the internal fillet 7, and the fillet is adopted to reduce the flow resistance of gas and prevent the gas from being blocked in the turning transition section 5.
Regarding the depth and width, the depth of the serpentine flow channel is the same as the height of the ridge 3; the width of the linear flow channel 4 is the same as the width of the ridge 3 and the relationship between the width a of the linear flow channel 4 and the width b of the discharge section flow channel 6 is: b is less than or equal to 0.8 a. In essence, the width a of the linear flow channel 4 is mainly determined according to the area of the gas flow field 1 and the number n of the ridges 3, assuming that the gas flow field 1 is a rectangular flow field, the area of the rectangular flow field is: c × d, the diagonal length e of the rectangular flow field is:
the angle theta between the diagonal and one side of the flow field can be based on
The relationship among the width a of the linear flow channel 4, the width b of the discharge-stage flow channel 6, and the number n of ridges 3 is determined as follows:
b is less than or equal to 0.8a (theta is the included angle between the diagonal line of the gas flow field and one side of the gas flow field, c is the side length of one side forming the included angle theta with the diagonal line of the gas flow field, and n is the valueThe range is an odd number of not less than 5).
The gas flow field 1 with the structure is arranged in the plate surface of the bipolar plate, a sealing groove 14 with a semicircular section is further arranged on the plate surface of the bipolar plate around the gas flow field 1, and a certain number of bolt holes 11 and positioning holes 13 are further arranged on the peripheral side of the sealing groove 14. Two side walls of the bipolar plate are also provided with thread sealing diversion holes 9 respectively communicated with the reaction gas inlet 2 and the generated product outlet 10, and the two side walls of the bipolar plate are also respectively provided with temperature detection holes 12 which correspond to the thread sealing diversion holes 9 one by one, wherein the temperature detection holes 12 are used for monitoring the temperature in the gas flow field 1.
Examples
As shown in figure 1, a proton exchange membrane fuel cell bipolar plate based on a symmetrical serpentine structure flow field, wherein a reaction gas inlet 2 and a generated product outlet 10 are positioned at two ends of a diagonal line of the gas flow field 1 and are distributed diagonally, a ridge 3, a linear flow channel 4, a turn-around transition section 5 and a discharge section flow channel 6 are distributed in the gas flow field 1, wherein the starting end of the linear flow channel 4 is communicated with the reaction gas inlet 2, the tail end of the discharge section flow channel 6 is communicated with the generated product outlet 10, the linear flow channel 4, the turn-around transition section 5, the discharge section flow channel 6 and the ridge 3 form a symmetrical serpentine flow field, and the serpentine flow field is symmetrical by the ridge 3 positioned on a connecting line of the reaction gas inlet 2 and the generated product outlet 10.
In this embodiment, the area of the flow field is 50mm × 50mm, and the diagonal length of the flow field is
The angle θ between the diagonal line and one side of the flow field is 45 °, n is 21, and b is 0.7a, so that the width a of the linear flow channel 4 is 1.6mm, the width b of the discharge section flow channel 6 is 1.12mm, the width of the ridge 3 is 1.6mm, and the width of the linear transition section 52 is 1.12 mm. According to the condition that the depth of the flow channel is the same as that of the ridge, the height of the ridge in the embodiment is 1mm, and the depth of the flow channel is 1 mm; the radius of the fillet 8 is taken to be 1mm, and the radius of the fillet 7 is taken to be 0.5 mm.
When the proton exchange membrane fuel cell bipolar plate with the symmetrical serpentine flow field in the embodiment is used, reaction gas is introduced through the thread sealing diversion hole 9, the gas enters the gas flow field 1 from the reaction gas inlet 2, after entering the gas flow field, the gas symmetrically diffuses towards two sides respectively under the partial flow of the ridge 3, the gas enters the linear flow channel 4, because the sectional area of the turning transition section 5 adopts the design mode of expansion, reduction and expansion, and the flow channel of the turning transition section 5 and the corner of the ridge 3 both adopt the circular arc design, the flow resistance of the reaction gas is reduced, the flow velocity of the reaction gas is increased, the gas concentration difference among a plurality of linear flow channels 4 is reduced, the gas distribution is more uniform, and along with the reaction, the reaction gas enters the discharge section flow channel 6 from the linear flow channel 4 at the tail part after passing through a plurality of groups of linear flow channels 4 and the turning transition section 5; the width of the discharge section flow channel 6 is smaller than that of the linear flow channel 4, the reduction of the sectional area of the discharge section flow channel 6 increases the flow velocity of the reaction gas, quickly discharges the water generated by the reaction, and discharges the water out of the bipolar plate of the proton exchange membrane fuel cell through the product outlet 10.
As shown in fig. 3, the electrochemical performance curve of the proton exchange membrane fuel cell bipolar plate based on the flow field with the symmetrical serpentine structure of the invention is adopted.
Under the operating conditions that the temperature of the fuel cell is 70 ℃, the operating pressure is 0.2MPa and the cathode gas and the anode gas are both humidified 100 percent, hydrogen with the mass flow of 8.809e-7kg/s and air with the mass flow of 1.041e-5kg/s are introduced. And under the condition that the open-circuit voltage is 1.09V, the voltage is changed to obtain the corresponding current density. As shown in FIG. 3, in this embodiment, when the output voltage is 0.55V, the power density is the highest, and the maximum power density reaches 0.6655W/cm2The proton exchange membrane fuel cell bipolar plate based on the flow field with the symmetrical serpentine structure has obvious effect on improving the performance.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
Claims (7)
1. The utility model provides a proton exchange membrane fuel cell bipolar plate based on symmetrical snakelike structure flow field, includes gas flow field (1), its characterized in that: the gas flow field (1) is symmetrically distributed in a serpentine shape, a reaction gas inlet (2) and a generated product outlet (10) of the gas flow field (1) are respectively positioned at two ends of one diagonal line of the gas flow field (1) and are distributed in a diagonal direction, and a ridge (3) positioned on a connecting line of the reaction gas inlet (2) and the generated product outlet (10) divides a flow channel from the reaction gas inlet (2) into two parts of serpentine flow channels which are symmetrically arranged; the snakelike runner comprises a linear runner (4), a turning transition section (5) and a discharge section runner (6), wherein the linear runner (4) is completely arranged in parallel to the ridge (3), the starting end of the initial linear runner (4) is a reaction gas inlet (2), the tail end of the tail linear runner (4) is communicated with the starting end of the discharge section runner (6), and the tail end of the initial linear runner (4), the starting end of the tail linear runner (4) and the linear runner (4) between the initial linear runner (4) and the tail linear runner (4) are communicated through the turning transition section (5); the linear flow channels (4) are separated by ridges (3); the U-turn transition section (5) comprises an expanding transition section (51), a linear transition section (52) and a zooming transition section (53) which are sequentially communicated, the width of the linear transition section (52) is smaller than that of the linear flow channel (4), the inlet end width of the expanding transition section (51) is equal to that of the linear flow channel (4), the outlet end width is equal to that of the linear transition section (52), the maximum width position of the expanding transition section (51) is larger than that of the linear flow channel (4), the inlet end width of the zooming transition section (53) is equal to that of the linear transition section (52), the outlet end width of the zooming transition section (53) is equal to that of the linear flow channel (4), and the maximum width position of the zooming transition section (53) is smaller than that of the linear flow channel (4).
2. The pem fuel cell bipolar plate based on a symmetric serpentine flow field of claim 1 wherein: the radius of the excircle corner (8) of the turning transition section (5) is larger than that of the fillet corner (7) of the turning transition section (5).
3. The pem fuel cell bipolar plate based on a symmetric serpentine flow field of claim 1 wherein: the depth of the serpentine flow channel is the same as the height of the ridge (3).
4. The pem fuel cell bipolar plate based on a symmetric serpentine flow field of claim 1 wherein: the width of the linear flow channel (4) is the same as that of the ridge (3), and the relationship between the width a of the linear flow channel (4) and the width b of the discharge section flow channel (6) is as follows: b is less than or equal to 0.8 a.
5. The pem fuel cell bipolar plate based on a symmetric serpentine flow field of claim 4 wherein: the relationship among the width a of the linear flow channel (4), the width b of the discharge section flow channel (6) and the number n of the ridges (3) is as follows:
in the formula (1), θ is an included angle between a diagonal line of the gas flow field and one of the edges of the gas flow field, c is a side length of one edge forming the included angle θ with the diagonal line of the gas flow field, and the value range of n is an odd number not less than 5.
6. The pem fuel cell bipolar plate based on a symmetric serpentine flow field of claim 1 wherein: the gas flow field (1) is arranged in the plate surface of the bipolar plate, a sealing groove (14) with a semicircular section is further formed in the plate surface of the bipolar plate around the gas flow field (1), and a certain number of bolt holes (11) and positioning holes (13) are further formed in the peripheral side of the sealing groove (14).
7. The pem fuel cell bipolar plate based on a symmetric serpentine flow field of claim 6 wherein: the two side walls of the bipolar plate are also provided with thread sealing diversion holes (9) which are respectively communicated with the reaction gas inlet (2) and the generated product outlet (10), and the two side walls of the bipolar plate are also respectively provided with temperature detection holes (12) which correspond to the thread sealing diversion holes (9) one by one.
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| CN114094135B (en) * | 2021-10-10 | 2023-06-09 | 北京工业大学 | Liquid water self-adaptive flow field plate of fuel cell capable of automatically switching parallel flow field and serpentine flow field |
| CN114497615B (en) * | 2022-01-21 | 2023-11-03 | 吉林大学 | Fuel cell bipolar plate of bionic flow field and implementation method thereof |
| CN115528268B (en) * | 2022-09-20 | 2023-09-01 | 中国科学院宁波材料技术与工程研究所 | Flow field plate, fuel cell unit, fuel cell, power generation system and electric equipment |
| CN115832351B (en) * | 2023-01-04 | 2023-04-18 | 爱德曼氢能源装备有限公司 | Fuel cell flow field structure and design method thereof |
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| CN101465435A (en) * | 2009-01-15 | 2009-06-24 | 上海交通大学 | Duel-electrode plate multi-channel hunting flow field structure for proton exchange membrane fuel cell |
| CN106816610A (en) * | 2015-11-27 | 2017-06-09 | 南京工业大学 | A kind of dual polar plates of proton exchange membrane fuel cell based on labyrinth baffle arrangement flow field |
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