CN114725424A - Radial flow field structure of fuel cell - Google Patents
Radial flow field structure of fuel cell Download PDFInfo
- Publication number
- CN114725424A CN114725424A CN202210640548.7A CN202210640548A CN114725424A CN 114725424 A CN114725424 A CN 114725424A CN 202210640548 A CN202210640548 A CN 202210640548A CN 114725424 A CN114725424 A CN 114725424A
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- CN
- China
- Prior art keywords
- flow
- flow field
- radial
- channel
- radial flow
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
- H01M8/02—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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a radial flow field structure of a fuel cell, which relates to the technical field of fuel cells and comprises a polar plate, an air inlet and an annular flow field, wherein the annular flow field comprises a plurality of flow field areas which are annularly distributed from inside to outside, a plurality of radial flow channels which are distributed at equal angles are arranged in each flow field area, each radial flow channel extends along the radial direction of the polar plate, a flow dividing channel which extends along a joint arc line is arranged at the junction of each two flow field areas, a corresponding radial flow channel is arranged in the flow field area at the inner side of each flow dividing channel and communicated with the flow dividing channel, the communication point of the two radial flow channels is positioned in the middle of the flow dividing channel, a plurality of corresponding radial flow channels are arranged in the flow field area at the outer side of each flow dividing channel and communicated with the flow dividing channel, and the communication points of the plurality of radial flow channels and the flow dividing channels are uniformly distributed along the extension direction of the flow dividing channels, the invention has simple structure and convenient processing, and the reaction efficiency and the water drainage of the tail gas can be improved, and the service life of the fuel cell is prolonged.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a radial flow field structure of a fuel cell.
Background
The bipolar plates of the components of the fuel cell are provided with flow field structures for the circulation of hydrogen and oxygen, so that the hydrogen and the oxygen enter the fuel cell and are uniformly distributed, and then the hydrogen and the oxygen react under the action of a re-catalytic membrane to generate electric energy.
Chinese patent publication No. CN111370726A discloses a radial flow field structure of a fuel cell, which promotes the sufficient diffusion of reaction gas in the flow field, improves the diffusion mass transfer efficiency of the reaction gas, improves the output efficiency of the cell, and simultaneously, the reaction gas uniformly diffuses to the periphery through flow channel holes, thereby ensuring the uniform distribution of the gas in the flow field and avoiding the occurrence of flow channel blockage and flooding. However, the patent has the following disadvantages in use: 1. the fuel cell assembled by the structure has the advantages that the structure is too complex, the flow field structure cannot be well attached to a catalytic membrane when the fuel cell works, so that oxygen and hydrogen are likely to flow disorderly, and the distribution and the reaction are uneven; 2. the bipolar plate is inconvenient to produce, the existing bipolar plate is produced by adopting a stamping process during production, the production efficiency is high, convenience and simplicity are realized, but the structure of the patent cannot be used for producing quickly during production; 3. the use effect is not good, and the flow field distribution of above-mentioned patent is too wide, leads to the water of oxyhydrogen fuel reaction production can't in time carried out, and then causes the condition of flooding to take place, both can reduce fuel cell's reaction efficiency, also can reduce fuel cell's life.
Disclosure of Invention
The invention aims to provide a fuel cell stack with an adjustable end plate stress, which aims to solve the technical problems that the stress of each point between bipolar plates in a fuel cell is unequal in size and the internal assembly force of the fuel cell cannot be adjusted in the using process in the prior art.
The invention provides a fuel cell radial flow field structure, which comprises a polar plate, an air inlet and an annular flow field, the gas inlet is positioned in the middle of the polar plate, the annular flow field is arranged on the polar plate and is uniformly distributed around the gas inlet, the annular flow field comprises a plurality of flow field areas which are annularly distributed from inside to outside, each flow field area is internally provided with a plurality of radial flow channels which are distributed at equal angles, each radial flow channel extends along the radial direction of the polar plate, the junction of every two flow field areas is provided with a flow distribution channel which extends along a joint arc line, the flow field area at the inner side of each flow distribution channel is internally provided with a corresponding radial flow channel which is communicated with the flow distribution channel, the communicating point of the two is positioned in the middle of the flow dividing channels, a plurality of corresponding radial flow channels are communicated with the flow field area outside each flow dividing channel, and the communication points of the plurality of radial runners and the flow distribution runner are uniformly distributed along the extension direction of the flow distribution runner.
Further, the widths of the plurality of flow field regions are gradually reduced from inside to outside.
Further, the bottom of the radial flow channel is wavy.
Further, the depth of the radial flow channel in the inner ring annular flow field is smaller than that of the radial flow channel in the outer ring annular flow field.
Further, the wave period of the radial flow channel in the inner ring annular flow field is smaller than that of the radial flow channel in the outer ring annular flow field.
Furthermore, one end of a radial flow channel in the annular flow field at the innermost ring is communicated with the air inlet.
Furthermore, the corners of the connecting part of the radial flow channel and the flow dividing flow channel are all arc corners.
Compared with the prior art, the invention has the beneficial effects that:
(1) when the annular flow field works, fuel gas required by the fuel cell enters from the gas inlet and continuously diffuses to the whole annular flow field through the radial flow channel and the flow dividing channel, and the area increasing speed is higher and higher when the annular structure diffuses outwards from the middle, so that the fuel gas can be uniformly distributed in the annular flow field finally by adopting the continuously branched form for diffusion, and the overlarge pressure difference between the gas inlet and the gas outlet can be avoided.
(2) Set up radial flow channel into the wavy, fuel gas can perpendicular radial flow channel's plane when the crest department, get into the catalysis layer to the mode of convection current, and then improve fuel cell's work efficiency, and at annular flow field edge, owing to keep away from the air inlet, at the continuous reaction of flow in-process fuel gas, concentration is also lower, through such runner design this moment, also can reduce the edge because of the fuel gas concentration reduces the influence that brings for the reaction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a cross-sectional comparison of radial channels in different flow field regions of the present invention;
fig. 4 is a plan view of the present invention.
Reference numerals:
1. a polar plate; 2. an air inlet; 3. an annular flow field; 4. a flow field region; 5. a radial flow passage; 6. and a flow dividing channel.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1 to 4, an embodiment of the present invention provides a radial flow field structure of a fuel cell, including a plate 1, a gas inlet 2 and an annular flow field 3, where the gas inlet 2 is located in the middle of the plate 1, the annular flow field 3 is disposed on the plate 1, the annular flow field 3 is uniformly distributed around the gas inlet 2, the annular flow field 3 includes a plurality of flow field regions 4 annularly distributed from inside to outside, each flow field region 4 is provided with a plurality of radial flow channels 5 distributed at equal angles, each radial flow channel 5 extends along the radial direction of the plate 1, a flow dividing channel 6 extending along a joining arc line is disposed at the junction of each two flow field regions 4, a corresponding radial flow channel 5 is disposed in the flow field region 4 inside each flow dividing channel 6 and is communicated with the flow dividing channel 5, the communication point of the two radial flow channels is located in the middle of the flow dividing channel 6, a plurality of corresponding radial flow channels 5 are disposed in the flow field region 4 outside each flow dividing channel 6 and are communicated with the flow dividing channel, and the communication points of the radial runners 5 and the flow dividing runner 6 are uniformly distributed along the extending direction of the flow dividing runner 6; when the fuel gas diffusion device works, fuel gas required by a fuel cell enters from the gas inlet 2 and is continuously diffused to the whole annular flow field 3 through the radial flow channel 5 and the flow dividing flow channel 6, and the annular structure is diffused from the middle outwards at an increasing speed, so that the fuel gas is diffused in the continuously branched form, the fuel gas can be uniformly distributed in the annular flow field 3 finally, and the overlarge pressure difference between the gas inlet 2 and the gas outlet can be avoided.
Specifically, referring to fig. 3, the widths of the plurality of flow field regions 4 are gradually reduced from inside to outside, and since the gas outlet pressure of the gas inlet 2 is relatively high and the flow effect is relatively good, the gas diffusion efficiency is accelerated by selecting a mode of branching in advance, the distribution speed and uniformity of the gas in the annular flow field 3 can be improved, and the working efficiency of the fuel cell is improved.
Specifically, referring to fig. 3, the bottom of the radial flow channel 5 is wavy; set up radial runner 5 to the wavy, fuel gas can perpendicular radial runner 5's plane when the crest department, get into the catalysis layer with the mode of convection current to and then improve fuel cell's work efficiency, and at 3 edges in annular flow field, owing to keep away from air inlet 2, at the continuous reaction of flow in-process fuel gas, concentration is also lower, through such runner design this moment, also can reduce the edge because of the fuel gas concentration reduces and the influence that brings for the reaction.
Specifically, referring to fig. 3, the depth of the radial flow channels 5 in the inner ring annular flow field 3 is smaller than the depth of the radial flow channels 5 in the outer ring annular flow field 3, so that the gas velocity in the plane direction at the edge of the annular flow field 3 and the direction perpendicular to the plane direction of the flow channels can be higher, and finally, the oxygen transmission and drainage performance of the battery can be enhanced.
Specifically, referring to fig. 3, the wave period of the radial flow channel 5 in the inner ring annular flow field 3 is smaller than the wave period of the radial flow channel 5 in the outer ring annular flow field 3, the wave period of the inner ring is small, so that the fuel gas can move perpendicular to the catalyst layer at a higher frequency, the reaction efficiency is improved, and the long period of the outer ring is set because the density and the pressure of the fuel gas at the outer ring are reduced, if high-frequency fluctuation is adopted, the flowing speed of the gas is affected, the drainage effect is affected, and the effect that the gas flows perpendicularly to the catalyst layer is also reduced.
Specifically, one end of each radial flow channel 5 in the innermost annular flow field 3 is communicated with the gas inlet 2.
Specifically, the corners of the joint of the radial flow channel 5 and the flow dividing flow channel 6 are both arc corners, so that the gas can flow in a turning way conveniently.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. The utility model provides a radial flow field structure of fuel cell, includes polar plate (1), air inlet (2) and annular flow field (3), air inlet (2) are located the middle part of polar plate (1), annular flow field (3) set up on polar plate (1) and the even distribution in annular flow field (3) around air inlet (2), its characterized in that: the annular flow field (3) comprises a plurality of flow field areas (4) which are annularly distributed from inside to outside, a plurality of radial flow channels (5) which are distributed at equal angles are arranged in each flow field area (4), each radial flow channel (5) extends along the radial direction of the polar plate (1), a shunting flow channel (6) which extends along a joint arc line is arranged at the junction of every two flow field areas (4), a corresponding radial flow channel (5) is arranged in each flow field area (4) at the inner side of each shunting flow channel (6) and is communicated with the shunting flow channel, and the communication point of the two is positioned in the middle of the flow dividing channels (6), a plurality of corresponding radial channels (5) are communicated with the flow field area (4) at the outer side of each flow dividing channel (6), and the communication points of the radial runners (5) and the flow dividing runner (6) are uniformly distributed along the extension direction of the flow dividing runner (6); the widths of the flow field areas (4) are gradually reduced from inside to outside; the bottom of the radial flow channel (5) is wavy; the depth of the radial flow channel (5) in the inner ring annular flow field (3) is less than that of the radial flow channel (5) in the outer ring annular flow field (3); the wave period of the radial flow channel (5) in the inner ring annular flow field (3) is less than that of the radial flow channel (5) in the outer ring annular flow field (3).
2. A fuel cell radial flow field structure according to claim 1, wherein: one end of a radial flow channel (5) in the annular flow field (3) at the innermost ring is communicated with the air inlet (2).
3. A fuel cell radial flow field structure as claimed in claim 1, wherein: and corners at the joint of the radial flow channel (5) and the flow dividing flow channel (6) are all arc corners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640548.7A CN114725424A (en) | 2022-06-08 | 2022-06-08 | Radial flow field structure of fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640548.7A CN114725424A (en) | 2022-06-08 | 2022-06-08 | Radial flow field structure of fuel cell |
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| CN114725424A true CN114725424A (en) | 2022-07-08 |
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| CN202210640548.7A Pending CN114725424A (en) | 2022-06-08 | 2022-06-08 | Radial flow field structure of fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115832351A (en) * | 2023-01-04 | 2023-03-21 | 爱德曼氢能源装备有限公司 | Fuel cell flow field structure and design method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070092781A1 (en) * | 2005-10-25 | 2007-04-26 | General Electric Company | SOFC seal and cell thermal management |
| CN105839136A (en) * | 2016-04-08 | 2016-08-10 | 中国工程物理研究院材料研究所 | Centrosymmetric radial bipolar plate flow field structure for solid polymer electrolyte (SPE) electrolysis |
| CN107579263A (en) * | 2012-08-14 | 2018-01-12 | 环能源公司 | Fuel cell flows raceway groove and flow field |
| CN109301282A (en) * | 2018-10-31 | 2019-02-01 | 温州大学激光与光电智能制造研究院 | A kind of interdigitated flow field fuel battery double plates of Active Drainage vein shape |
| CN109768299A (en) * | 2018-12-23 | 2019-05-17 | 上海交通大学 | A kind of waterwheel shape fuel cell flow field board suitable for gas electrode |
| CN110299544A (en) * | 2019-06-25 | 2019-10-01 | 山东建筑大学 | Fuel cell variable section runner and bipolar plates with the runner |
| JP2019220368A (en) * | 2018-06-21 | 2019-12-26 | 本田技研工業株式会社 | Fuel cell module and fuel cell system |
| CN111370726A (en) * | 2020-03-17 | 2020-07-03 | 山东建筑大学 | Radial flow field structure of fuel cell |
| WO2021007678A1 (en) * | 2019-07-16 | 2021-01-21 | Harvey David B | Compact fuel cell modules and assemblies |
| CN113707902A (en) * | 2021-08-23 | 2021-11-26 | 珠海格力电器股份有限公司 | Bipolar plate of hydrogen fuel cell and hydrogen fuel cell |
| CN215184080U (en) * | 2021-04-06 | 2021-12-14 | 济南大学 | Spiral groove flow field bipolar plate structure of circular substrate |
| CN215955330U (en) * | 2021-10-29 | 2022-03-04 | 山东建筑大学 | Wave-shaped flow field structure of proton exchange membrane fuel cell |
-
2022
- 2022-06-08 CN CN202210640548.7A patent/CN114725424A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070092781A1 (en) * | 2005-10-25 | 2007-04-26 | General Electric Company | SOFC seal and cell thermal management |
| CN107579263A (en) * | 2012-08-14 | 2018-01-12 | 环能源公司 | Fuel cell flows raceway groove and flow field |
| CN105839136A (en) * | 2016-04-08 | 2016-08-10 | 中国工程物理研究院材料研究所 | Centrosymmetric radial bipolar plate flow field structure for solid polymer electrolyte (SPE) electrolysis |
| JP2019220368A (en) * | 2018-06-21 | 2019-12-26 | 本田技研工業株式会社 | Fuel cell module and fuel cell system |
| CN109301282A (en) * | 2018-10-31 | 2019-02-01 | 温州大学激光与光电智能制造研究院 | A kind of interdigitated flow field fuel battery double plates of Active Drainage vein shape |
| CN109768299A (en) * | 2018-12-23 | 2019-05-17 | 上海交通大学 | A kind of waterwheel shape fuel cell flow field board suitable for gas electrode |
| CN110299544A (en) * | 2019-06-25 | 2019-10-01 | 山东建筑大学 | Fuel cell variable section runner and bipolar plates with the runner |
| WO2021007678A1 (en) * | 2019-07-16 | 2021-01-21 | Harvey David B | Compact fuel cell modules and assemblies |
| CN111370726A (en) * | 2020-03-17 | 2020-07-03 | 山东建筑大学 | Radial flow field structure of fuel cell |
| CN215184080U (en) * | 2021-04-06 | 2021-12-14 | 济南大学 | Spiral groove flow field bipolar plate structure of circular substrate |
| CN113707902A (en) * | 2021-08-23 | 2021-11-26 | 珠海格力电器股份有限公司 | Bipolar plate of hydrogen fuel cell and hydrogen fuel cell |
| CN215955330U (en) * | 2021-10-29 | 2022-03-04 | 山东建筑大学 | Wave-shaped flow field structure of proton exchange membrane fuel cell |
Non-Patent Citations (1)
| Title |
|---|
| 赵强等: "质子交换膜燃料电池流场板研究进展", 《化工学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115832351A (en) * | 2023-01-04 | 2023-03-21 | 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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Application publication date: 20220708 |