CN111063911B - Fuel cell air inlet structure and fuel cell - Google Patents
Fuel cell air inlet structure and fuel cell Download PDFInfo
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- CN111063911B CN111063911B CN201911037388.1A CN201911037388A CN111063911B CN 111063911 B CN111063911 B CN 111063911B CN 201911037388 A CN201911037388 A CN 201911037388A CN 111063911 B CN111063911 B CN 111063911B
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- 239000000446 fuel Substances 0.000 title claims abstract description 37
- 239000012528 membrane Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 5
- 239000007789 gas Substances 0.000 description 35
- 239000012495 reaction gas Substances 0.000 description 12
- 238000010030 laminating Methods 0.000 description 7
- 230000000994 depressogenic effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 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
-
- 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
-
- 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 application provides a fuel cell air inlet structure and a fuel cell. The fuel cell air inlet structure comprises a first polar plate (1) and a second polar plate (2), wherein an air inlet channel (3) is arranged on the first polar plate (1) and the second polar plate (2), a main reaction area (4) is arranged on at least one of the first polar plate (1) and the second polar plate (2), the main reaction area (4) is separated from the air inlet channel (3) through a diversion area (5), a diversion channel (6) is arranged in the diversion area (5), the diversion channel (6) is located between the first polar plate (1) and the second polar plate (2), one end of the diversion channel (6) is communicated to the air inlet channel (3), and the other end of the diversion channel (6) is communicated to the main reaction area (4). According to the fuel cell air inlet structure, the gas main channel can be prevented from being blocked, the pressure of gas on the membrane electrode is reduced, and the membrane electrode is effectively protected.
Description
Technical Field
The application relates to the technical field of fuel cells, in particular to a fuel cell air inlet structure and a fuel cell.
Background
When the fuel cell generates electricity, hydrogen and oxygen are introduced and catalyzed by a membrane electrode to generate current.
The common gas inlet structure is mainly arranged on the surface of the polar plate, and gas enters the reaction zone through the gas inlet. The power generation is mainly realized by catalyzing gas by a membrane electrode covered on the surface of a polar plate, and the membrane electrode consists of a thin perfluorosulfonic acid membrane, two layers of diffusion carbon paper and a catalyst layer.
Generally, the diameter of the main air inlet channel is larger, and in the air inlet process, the air inlet structure can cause the problem that a soft and fragile membrane electrode can be overlapped on the main air inlet channel to cause the blockage of the main air inlet channel, so that the local air inlet pressure is too high, and the membrane electrode is broken.
Disclosure of Invention
Therefore, an object of the present invention is to provide a fuel cell gas inlet structure and a fuel cell, which can prevent a gas main channel from being blocked, reduce the pressure of gas on a membrane electrode, and effectively protect the membrane electrode.
In order to solve the above problems, the present application provides a fuel cell air intake structure, including a first polar plate and a second polar plate, the first polar plate and the second polar plate are provided with an air intake channel, at least one of the first polar plate and the second polar plate is provided with a main reaction zone, the main reaction zone and the air intake channel are separated by a diversion zone, the diversion zone is sequentially provided with a diversion channel and a diversion structure along a gas flow direction, the diversion channel is located between the first polar plate and the second polar plate, one end of the diversion channel is communicated with the air intake channel, the other end of the diversion channel is communicated with the main reaction zone, at a position where the diversion channel is communicated with the air intake channel, an expansion opening is formed between the first polar plate and the second polar plate, and the expansion opening is used for guiding the gas in the air intake channel into; the polar plate on the side of the main reaction zone is provided with an air inlet, a flow guide structure is arranged between the air inlet and the main reaction zone and is used for guiding air introduced by the flow guide channel, and the air flows out of the flow guide channel through the air inlet and enters the main reaction zone after being guided by the flow guide structure.
Preferably, the first polar plate positioned in the diversion area is provided with first bulges protruding towards the second polar plate, and an air inlet channel is formed between the adjacent first bulges; and/or second bulges protruding towards the first polar plate are arranged on the second polar plate positioned in the diversion area, and an air inlet channel is formed between the adjacent second bulges.
Preferably, the first polar plate is provided with a first protrusion, the second polar plate is provided with a second protrusion, the first protrusion and the second protrusion are multiple, and the first protrusion and the second protrusion are mutually attached in a one-to-one correspondence manner.
Preferably, the first plate located in the current guiding region includes a protrusion region and a first plate region, the second plate located in the current guiding region includes a protrusion region and a second plate region, the first protrusion is located in the protrusion region of the first plate, the second protrusion is located in the protrusion region of the second plate, the first protrusion is arranged corresponding to the second plate region, and the second protrusion is arranged corresponding to the first plate region.
Preferably, the air inlet outlet is a plurality of air inlet outlets, the air inlet outlets are long-strip-shaped, the air inlet outlets extend along the width direction of the main reaction zone, and the air inlet outlets are arranged at intervals along the width direction of the main reaction zone.
Preferably, two convex edges are formed at two ends of one side of the convex area of the first polar plate facing the main reaction area, the convex edges extend towards the main reaction area and are matched with the convex area to form a U-shaped concave area on the first polar plate, the bottom of the U-shaped concave area is flush with the first polar plate area, and the air inlet outlet is formed in the U-shaped concave area.
Preferably, the flow guide structure comprises a plurality of flow guide bulges, the flow guide bulges are arranged on the side of the main reaction zone of the polar plate, flow guide channels are formed among the flow guide bulges, and the flow guide channels are communicated with the air inlet and the main reaction zone.
Preferably, a membrane electrode is arranged on the polar plate where the main reaction zone is located, and the membrane electrode is arranged on the side of the polar plate where the main reaction zone is located.
According to another aspect of the present application, there is provided a fuel cell including the air intake structure, which is the fuel cell air intake structure described above.
The fuel cell air inlet structure comprises a first polar plate and a second polar plate, wherein an air inlet channel is arranged on the first polar plate and the second polar plate, a main reaction area is arranged on at least one of the first polar plate and the second polar plate, the main reaction area and the air inlet channel are separated through a flow guiding area, the flow guiding area is sequentially provided with a flow guiding channel and a flow guiding structure along the air flowing direction, the flow guiding channel is positioned between the first polar plate and the second polar plate, one end of the flow guiding channel is communicated with the air inlet channel, the other end of the flow guiding channel is communicated with the main reaction area, an expansion opening is formed between the first polar plate and the second polar plate at the position where the flow guiding channel is communicated with the air inlet channel, and the expansion opening is used for guiding air in the air inlet channel into; the polar plate on the side of the main reaction zone is provided with an air inlet, a flow guide structure is arranged between the air inlet and the main reaction zone and is used for guiding air introduced by the flow guide channel, and the air flows out of the flow guide channel through the air inlet and enters the main reaction zone after being guided by the flow guide structure. The fuel cell air inlet structure forms a flow guide area between the main reaction area and the air inlet channel for separating the main reaction area and the air inlet channel, and the drainage area is provided with a drainage channel positioned between the first polar plate and the second polar plate and a flow guide structure arranged at the outlet end of the drainage channel, therefore, the airflow entering the air inlet structure through the air inlet channel flows to the flow guide structure from the space between the first polar plate and the second polar plate through the flow guide channel, is guided by the flow guide structure and then flows to the main reaction area, rather than directly feeding gas from the surface of the polar plate, can avoid causing larger gas impact acting force to the membrane electrode, the smoothness of the gas inlet channel is ensured by changing the flowing direction of the gas, the problems that the membrane electrode is blocked by the gas inlet to cause overhigh local pressure of the gas inlet and break the membrane electrode are solved, the pressure of the gas on the membrane electrode is reduced, and the membrane electrode is effectively protected.
Drawings
Fig. 1 is a schematic perspective view of an air intake structure of a fuel cell according to an embodiment of the present application;
fig. 2 is a schematic structural view of an air intake structure of a fuel cell according to an embodiment of the present application;
fig. 3 is a rear view schematically showing the structure of the air intake structure of the fuel cell according to the embodiment of the present application;
fig. 4 is a perspective partial sectional view of a fuel cell air intake structure of an embodiment of the present application.
The reference numerals are represented as:
1. a first electrode plate; 2. a second polar plate; 3. an air intake passage; 4. a primary reaction zone; 5. a diversion area; 6. a drainage channel; 7. a first protrusion; 8. a second protrusion; 9. a first plate region; 10. a second plate region; 11. an air inlet and an air outlet; 12. a flow guide bulge; 13. a flow guide channel.
Detailed Description
Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, a fuel cell air inlet structure includes a first electrode plate 1 and a second electrode plate 2, an air inlet channel 3 is disposed on the first electrode plate 1 and the second electrode plate 2, a main reaction area 4 is disposed on at least one of the first electrode plate 1 and the second electrode plate 2, the main reaction area 4 and the air inlet channel 3 are separated by a flow guiding area 5, the flow guiding area 5 is sequentially provided with a flow guiding channel 6 and a flow guiding structure along a gas flowing direction, the flow guiding channel 6 is disposed between the first electrode plate 1 and the second electrode plate 2, one end of the flow guiding channel 6 is connected to the air inlet channel 3, the other end of the flow guiding channel 6 is connected to the main reaction area 4, an expansion opening is formed between the first polar plate 1 and the second polar plate 2 at the position where the flow guide channel 6 is communicated with the air inlet channel 3, and the expansion opening is used for guiding the air in the air inlet channel 3 into the flow guide channel 6; the polar plate on the side of the main reaction zone 4 is provided with an air inlet 11, a flow guide structure is further arranged between the air inlet 11 and the main reaction zone 4, the flow guide structure is used for guiding air introduced by the flow guide channel 6, and the air flows out of the flow guide channel 6 through the air inlet 11 and enters the main reaction zone 4 after being guided by the flow guide structure.
This fuel cell inlet structure forms between main reaction zone 4 and inlet channel 3 and separates drainage zone 5 between the two, and drainage zone 5 is provided with the drainage channel 6 that is located between first polar plate 1 and the second polar plate 2, consequently, the air current that enters into inlet structure through inlet channel 3 can flow to main reaction zone 4 from between first polar plate 1 and the second polar plate 2 via drainage channel 6, rather than direct from the polar plate surface admit air, can avoid causing great gas impact effort to the membrane electrode, inlet channel's smooth and easy nature has been guaranteed through the mode that changes the gas flow direction, avoided the membrane electrode to block up gas inlet, cause the local pressure of admitting air too high, the problem of bursting, reduce the pressure of gas to the membrane electrode, form effective protection to the membrane electrode.
Reaction gas enters into the inlet structure from inlet channel 3 in the back, can disperse in inlet channel 3, make reaction gas distribute more evenly on the one hand, on the other hand can reduce reaction gas's flow pressure, when making reaction gas enter into main reaction zone 4 through flow guide 6, can not cause too big impact to the membrane electrode on main reaction zone 4, simultaneously because the membrane electrode homoenergetic on main reaction zone 4 can obtain sufficient support, consequently be difficult to block up the runner, can avoid local formation high pressure gas, and then avoid local high pressure gas to break through the membrane electrode.
The first electrode plate 1 is, for example, an anode plate, and the second electrode plate 2 is, for example, a cathode plate. The air inlet structure is composed of different characteristics of a cathode plate and an anode plate, and the anode plate is formed by stamping stainless steel metal. And the negative plate or the positive plate utilizes a die to punch the stainless steel flat plate to form a concave-convex structure. The front part of the air inlet structure is divided into a polar plate, which is mainly divided into an air inlet channel, an air inlet outlet and a flow guide structure, and the back part is divided into another polar plate which mainly plays a supporting role.
In one embodiment, the first polar plate 1 positioned in the diversion area 5 is provided with first protrusions 7 protruding towards the second polar plate 2, and the air inlet channel 3 is formed between the adjacent first protrusions 7. This first arch 7 can separate first polar plate 1 and second polar plate 2, avoids first polar plate 1 and the laminating of second polar plate 2 to form drainage channel 6 smoothly between first polar plate 1 and second polar plate 2, conveniently carry reaction gas to main reaction zone 4 department from drainage channel 6.
In another embodiment, the second plate 2 in the diversion area 5 is provided with second protrusions 8 protruding towards the first plate 1, and the air inlet channel 3 is formed between the adjacent second protrusions 8.
In another embodiment, the first plate 1 is provided with a first protrusion 7, the second plate 2 is provided with a second protrusion 8, the first protrusion 7 and the second protrusion 8 are both multiple, and the first protrusion 7 and the second protrusion 8 are correspondingly attached to each other.
First arch 7 and the protruding 8 one-to-one of second are laminated each other, not only can form drainage channel 6 between first polar plate 1 and second polar plate 2 more conveniently, can also form effective support to between first polar plate 1 and the second polar plate 2 through first arch 7 and second arch 8.
In this embodiment, the first plate 1 located in the current guiding area 5 includes a protrusion area and a first plate area 9, the second plate 2 located in the current guiding area 5 includes a protrusion area and a second plate area 10, the first protrusion 7 is located in the protrusion area of the first plate 1, the second protrusion 8 is located in the protrusion area of the second plate 2, the first protrusion 7 is disposed corresponding to the second plate area 10, and the second protrusion 8 is disposed corresponding to the first plate area 9.
In the present embodiment, the first protrusions 7 and the second protrusions 8 are misaligned in the flow direction of the airflow. When the gas reaches the inlet from the gas inlet channel 3, the gas does not flow into the reaction region along the surface of the polar plate as usual, and because the structures of the two polar plates are staggered, the salient points on the back part of the gas inlet structure just support the flat plate region on the front part, and the salient points on the front part just support the flat plate region on the back part, so that a channel through which the gas can flow is formed in the middle parts of the two polar plates.
Particularly, the protruding district of first polar plate 1 is protruding towards the direction of keeping away from second polar plate 2 for first polar plate district 9, and first arch 7 sets up on the top surface of protruding district to protruding to the direction of this second polar plate 2, and this kind of structure can increase the relative distance between first polar plate 1 and the second polar plate 2, thereby conveniently carries out the processing of first arch 7, prevents that first arch 7 is high and leads to the unable laminating in the laminating area at the edge between first polar plate 1 and the second polar plate 2, makes structural design more reasonable. First flat board district 9 sinks for protruding district, and the surface that is close to second arch 8 of first flat board district 9 flushes with the top surface of first arch 7, when first flat board district 9 and the protruding 8 laminating of second, can form effective support to second arch 8, can not form simultaneously to the drainage channel 6 between the protruding 8 of adjacent second and interfere, has guaranteed reaction gas's smooth and easy flow, also makes first protruding 7's processing more convenient simultaneously, highly more easily controls.
Similarly, the convex region of the second plate 2 is also convex relative to the second plate region 10 in the direction away from the first plate 1, and the height of the convex is the height of the second convex 8. This kind of structure makes the protruding height of the protruding district of second polar plate 2 can offset with the protruding 8 highly of second, thereby conveniently carry out the setting of second arch 8 under the circumstances that does not change the overall height of second polar plate 2, simultaneously can make the face of second flat board district 10 flush with the protruding 8 top surface of second, the uniformity of the overall structure of second polar plate 2 has been guaranteed, when making first polar plate 1 and second polar plate 2 laminate, have better laminating effect, it is more convenient to realize the laminating between the face of first arch 7 and second flat board district 10, and the laminating between the face of second arch 8 and first flat board district 9, and difficult emergence is interfered, can form more smooth and easy drainage channel 6, the processing structure is simpler, it is more convenient to process.
Preferably, the first protrusion 7 and the second protrusion 8 are aligned along the flow direction of the air flow, so that the drainage channel formed between the second protrusion 8 and the first flat plate region 9 can be aligned with the drainage channel formed between the first protrusion 7 and the second flat plate region 10, thereby preventing the protrusions from obstructing the air flow and ensuring the smoothness of the air flow flowing in the drainage channel 6.
The gas inlet 11 can make the reaction gas in the flow guide channel 6 enter the main reaction area 4, thereby ensuring that the reaction gas can smoothly enter the main reaction area 4 to participate in the reaction.
The air inlet outlets 11 are multiple, the air inlet outlets 11 are long strips, the air inlet outlets 11 extend along the width direction of the main reaction zone 4, and the air inlet outlets 11 are arranged at intervals along the width direction of the main reaction zone 4. The air outlet 11 of rectangular shape, the scope of giving vent to anger that can guarantee air outlet 11 is wider, and air current distribution is more even to make the reaction gas who flows out from air outlet 11 can distribute more evenly in main reaction zone 4 and participate in the reaction, improve reaction effect.
The flow guide structure can guide the reaction gas flowing out from the gas inlet and outlet 11, so that the reaction gas can enter the main reaction zone 4 more uniformly.
The protruding district of first polar plate 1 forms two chimbs at both ends towards one side of main reaction zone 4, and the chimb extends to main reaction zone 4 to form the U-shaped depressed area on first polar plate 1 with protruding district cooperation, U-shaped depressed area bottom and first plate district 9 parallel and level, inlet outlet 11 sets up in forming the U-shaped depressed area. Two convex edges are formed at two ends of the convex area of the first polar plate 1, the air inlet outlet is limited in the U-shaped concave area between the two convex edges, the air flow flowing out of the air inlet outlet 11 can be limited by utilizing the side walls of the two convex edges and the convex area, the air flow can only flow towards the side of the main reaction area 4 after flowing out of the air inlet outlet 11, the non-directional air flowing out of the air inlet outlet 11 is effectively rectified, the air flow is prevented from flowing out of the positions of the two convex edges, the flowing efficiency of the air is improved, the air flow can flow to the flow guide structure more intensively after flowing out of the air inlet 11 and enters the main reaction area 4 after being guided by the flow guide structure, and under the combined action of the flow guide structure and the two convex edges, the air flow flowing out of the air inlet 11 can be rectified more effectively, and the distribution of the air flow is more uniform, can be uniformly distributed to all positions of the main reaction zone 4, and improves the reaction efficiency and reaction effect of the gas.
In this embodiment, the flow guiding structure includes a plurality of flow guiding protrusions 12, the flow guiding protrusions 12 are disposed on the side of the main reaction zone 4 of the plate, flow guiding channels 13 are formed between the plurality of flow guiding protrusions 12, and the flow guiding channels 13 communicate the air inlet 11 and the main reaction zone 4.
When the gas flows out of the outlets, the gas flows through the flow guide area on the front part of the gas inlet structure and is guided into a strand of uniform gas to flow into the main reaction area 4 on the surface of the polar plate. The part of the flow guide structure not only guides the reaction gas, but also plays a role in supporting a membrane electrode which is subsequently covered on the surface of the polar plate.
The polar plate where the main reaction zone 4 is located is provided with a membrane electrode, and the membrane electrode is arranged on the side of the polar plate where the main reaction zone 4 is located.
When the main reaction zone 4 is arranged on the first polar plate 1, the membrane electrode is arranged on the main reaction zone 4 of the first polar plate 1 and is attached to the surface of the first polar plate 1. When the main reaction region 4 is disposed on the second electrode plate 2, the membrane electrode is disposed on the main reaction region 4 of the second electrode plate 2 and attached to the surface of the second electrode plate 2. When the first electrode plate 1 and the second electrode plate 2 are respectively provided with the main reaction regions 4, the main reaction regions 4 of the first electrode plate 1 and the second electrode plate 2 need to be correspondingly provided with membrane electrodes.
The flow guide protrusion 12 may be a circular protrusion, an oval protrusion, a square protrusion, a triangular protrusion, or a trapezoidal protrusion.
According to an embodiment of the present application, the fuel cell includes an air intake structure, which is the fuel cell air intake structure described above.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (9)
1. A fuel cell air inlet structure is characterized by comprising a first polar plate (1) and a second polar plate (2), wherein an air inlet channel (3) is arranged on the first polar plate (1) and the second polar plate (2), a main reaction area (4) is arranged on at least one of the first polar plate (1) and the second polar plate (2), the main reaction area (4) is separated from the air inlet channel (3) through a diversion area (5), the diversion area (5) is sequentially provided with a diversion channel (6) and a diversion structure along the gas flow direction, the diversion channel (6) is positioned between the first polar plate (1) and the second polar plate (2), one end of the diversion channel (6) is communicated with the air inlet channel (3), the other end of the diversion channel (6) is communicated with the main reaction area (4), and the diversion channel (6) is communicated with the air inlet channel (3), an expansion opening is formed between the first polar plate (1) and the second polar plate (2), and the expansion opening is used for guiding the gas in the gas inlet channel (3) to the flow guide channel (6); be provided with inlet outlet (11) on the polar plate of main reaction zone (4) place side, the water conservancy diversion structure sets up inlet outlet (11) with between main reaction zone (4), the water conservancy diversion structure is used for right the gas that drainage channel (6) were introduced carries out the water conservancy diversion, and gaseous warp inlet outlet (11) flow drainage channel (6), and the warp get into after the water conservancy diversion structure water conservancy diversion main reaction zone (4).
2. The fuel cell air intake structure according to claim 1, wherein first protrusions (7) protruding toward the second electrode plate (2) are provided on the first electrode plate (1) in the flow guide region (5), and the air intake passages (3) are formed between adjacent first protrusions (7); and/or second bulges (8) protruding towards the first polar plate (1) are arranged on the second polar plate (2) positioned in the diversion area (5), and an air inlet channel (3) is formed between the adjacent second bulges (8).
3. The fuel cell air intake structure according to claim 2, wherein the first electrode plate (1) is provided with a first protrusion (7), the second electrode plate (2) is provided with a second protrusion (8), the first protrusion (7) and the second protrusion (8) are both provided in plurality, and the first protrusion (7) and the second protrusion (8) are correspondingly attached to each other.
4. The fuel cell gas inlet structure according to claim 2, wherein the first electrode plate (1) located in the flow guiding region (5) comprises a convex region and a first flat region (9), the second electrode plate (2) located in the flow guiding region (5) comprises a convex region and a second flat region (10), the first protrusion (7) is located in the convex region of the first electrode plate (1), the second protrusion (8) is located in the convex region of the second electrode plate (2), the first protrusion (7) is disposed corresponding to the second flat region (10), and the second protrusion (8) is disposed corresponding to the first flat region (9).
5. The fuel cell air intake structure according to claim 1, wherein the air intake outlet (11) is plural, the plural air intake outlets (11) are elongated, the air intake outlets (11) extend in a width direction of the main reaction zone (4), and the plural air intake outlets (11) are spaced apart in the width direction of the main reaction zone (4).
6. The fuel cell gas inlet structure according to claim 4, wherein the raised area of the first electrode plate (1) is formed with two raised edges at both ends toward one side of the main reaction area (4), the raised edges extend toward the main reaction area (4) and cooperate with the raised area to form a U-shaped recessed area on the first electrode plate (1), the bottom of the U-shaped recessed area is flush with the first plate area (9), and the gas inlet outlet (11) is disposed in the U-shaped recessed area.
7. The fuel cell air inlet structure according to claim 1, wherein the flow guide structure comprises a plurality of flow guide protrusions (12), the flow guide protrusions (12) are arranged on the side of the main reaction zone (4) of the plate, flow guide channels (13) are formed between the flow guide protrusions (12), and the flow guide channels (13) are communicated with the air inlet outlet (11) and the main reaction zone (4).
8. The fuel cell air intake structure according to any one of claims 1 to 7, wherein a membrane electrode is provided on the plate where the primary reaction zone (4) is located, the membrane electrode being provided on the primary reaction zone (4) side of the plate.
9. A fuel cell comprising an air intake structure, characterized in that the air intake structure is the fuel cell air intake structure of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037388.1A CN111063911B (en) | 2019-10-29 | 2019-10-29 | Fuel cell air inlet structure and fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037388.1A CN111063911B (en) | 2019-10-29 | 2019-10-29 | Fuel cell air inlet structure and fuel cell |
Publications (2)
| Publication Number | Publication Date |
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| CN111063911A CN111063911A (en) | 2020-04-24 |
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| CN105489913A (en) * | 2015-12-15 | 2016-04-13 | 武汉理工新能源有限公司 | Bipolar plate for fuel cell |
| CN109713344A (en) * | 2017-10-26 | 2019-05-03 | 本田技研工业株式会社 | Generate electricity monocell |
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| JP5694117B2 (en) * | 2010-11-22 | 2015-04-01 | 本田技研工業株式会社 | Fuel cell |
| CN104170147B (en) * | 2012-03-23 | 2016-10-12 | 本田技研工业株式会社 | Fuel cell |
| JP2017123249A (en) * | 2016-01-06 | 2017-07-13 | トヨタ紡織株式会社 | Separator for solid polymer type fuel battery |
| CN105870477B (en) * | 2016-06-08 | 2018-06-01 | 江苏耀扬新能源科技有限公司 | Fuel battery double plates |
| TWI613862B (en) * | 2016-11-30 | 2018-02-01 | 黃鎮江 | Bipolar plate inlet structure of fuel cell having drainage flow channel |
| CN107123820B (en) * | 2017-06-22 | 2024-02-13 | 天津中德应用技术大学 | Novel fuel cell stack cooling water flow passage plate and battery pack thereof |
| JP6618513B2 (en) * | 2017-07-21 | 2019-12-11 | 本田技研工業株式会社 | Power generation cell |
| CN208873821U (en) * | 2018-08-30 | 2019-05-17 | 北京新研创能科技有限公司 | A kind of air-cooling fuel cell bipolar plates |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105489913A (en) * | 2015-12-15 | 2016-04-13 | 武汉理工新能源有限公司 | Bipolar plate for fuel cell |
| CN109713344A (en) * | 2017-10-26 | 2019-05-03 | 本田技研工业株式会社 | Generate electricity monocell |
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