CN220358139U - Air-cooled fuel cell stack and bipolar plate thereof - Google Patents
Air-cooled fuel cell stack and bipolar plate thereof Download PDFInfo
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- CN220358139U CN220358139U CN202320586891.8U CN202320586891U CN220358139U CN 220358139 U CN220358139 U CN 220358139U CN 202320586891 U CN202320586891 U CN 202320586891U CN 220358139 U CN220358139 U CN 220358139U
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- 239000000446 fuel Substances 0.000 title claims abstract description 84
- 238000001816 cooling Methods 0.000 claims abstract description 52
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 230000000712 assembly Effects 0.000 claims abstract description 17
- 238000000429 assembly Methods 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims description 10
- 210000000746 body region Anatomy 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 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
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model provides an air-cooled fuel cell stack, which comprises a plurality of membrane electrode assemblies and a plurality of bipolar plates, wherein the bipolar plates and the membrane electrode assemblies are alternately stacked in the stacking direction of the air-cooled fuel cell stack, anode flow fields of the air-cooled fuel cell stack are formed between the anode sides of the bipolar plates and the membrane electrode assemblies, and cathode flow fields of the air-cooled fuel cell stack are formed between the cathode sides of the bipolar plates and the membrane electrode assemblies, cooling flow fields of the air-cooled fuel cell stack and the anode flow fields are staggered with each other, and the cooling flow fields of the air-cooled fuel cell stack and the cathode flow fields are staggered with each other.
Description
Technical Field
The utility model relates to the technical field of fuel cells, in particular to an air-cooled fuel cell stack and a bipolar plate thereof.
Background
A fuel cell is a power generation device that converts chemical energy in fuel into electric energy through an electrochemical reaction, and is gradually widely used in various fields since it is not limited by carnot cycle. The fuel cell, especially Proton Exchange Membrane Fuel Cell (PEMFC), uses anode plate and cathode plate to guide the flow of hydrogen and air, so that the hydrogen and air can be uniformly distributed in the anode flow field and the cathode flow field at two sides of the membrane electrode assembly, and the hydrogen is used as fuel, the oxygen in the air is used as oxidant, and the electric energy is generated through electrochemical reaction, and simultaneously the heat is generated.
In the stack structure of the fuel cell stack, there are two dividing modes of the basic constituent units. A plurality of single cells are sequentially stacked in the fuel cell stack by taking the single cells as basic units, wherein the single cells comprise an anode plate, a cathode plate and a membrane electrode assembly which is clamped between the anode plate and the cathode plate, and a cooling flow field of the fuel cell stack is formed between two adjacent single cells, namely between the anode plate of one single cell and the cathode plate of the adjacent single cell; the other is a basic unit of bipolar plates and the membrane electrode assemblies stacked in an alternating arrangement, wherein the bipolar plates include anode plates in one cell and cathode plates in an adjacent cell, the bipolar plates defining the cooling flow field inside thereof, i.e. between mutually facing surfaces of the anode plates and the cathode plates.
It will be appreciated that in the existing fuel cell stack, whether it be a water (liquid) cooled fuel cell stack or an air (wind) cooled fuel cell stack, the anode flow field, the cathode flow field and the cooling flow field are implemented as shown in fig. 1, wherein in the stacking direction of the fuel cell stack, the cooling flow field is located between the anode flow field and the cathode flow field, and the cooling flow field and the anode flow field are respectively located at both sides of the same plate body area of the anode plate, and the cooling flow field and the cathode flow field are respectively located at both sides of the same plate body area of the cathode plate. In other words, the cooling flow channels for forming the cooling flow field may be provided on one side of the plate body region of the anode plate, the other side of the plate body region of the anode plate being provided with anode flow channels, the cooling flow channels may also be provided on one side of the plate body region of the cathode plate, the other side of the plate body region of the cathode plate being provided with cathode flow channels. Therefore, in order to be able to provide the flow channels on both sides of the plate body region, the plate body thickness of the anode plate and/or the cathode plate must be greater than a specific minimum thickness, which cannot be designed and manufactured to be thinner without breaking through the limitation of the minimum thickness, and cannot be suitable for certain application situations requiring severe thickness dimension, especially after the anode plate and/or the cathode plate are stacked into a fuel cell stack, the disadvantages of which become more remarkable with the increase of the stacking number.
Disclosure of Invention
The utility model has the main advantages that the air-cooled fuel cell stack is provided, wherein the cooling flow field and the anode flow field of the air-cooled fuel cell stack are staggered, and the cooling flow field and the cathode flow field of the air-cooled fuel cell stack are staggered, so that the cooling flow field is no longer positioned between the anode flow field and the cathode flow field, and the air-cooled fuel cell stack has smaller size in the stacking direction, namely, the whole thickness is thinner, and can be suitable for certain application scenes with severe requirements on the thickness dimension.
Another advantage of the present utility model is to provide a bipolar plate of an air-cooled fuel cell stack, in which the cooling flow channels of the bipolar plate are provided at the extensions of the bipolar plate, so that the bipolar plate has a smaller size, i.e. a thinner thickness, in the stacking direction, which can be adapted to certain application scenarios where the thickness dimension is demanding.
Another advantage of the present utility model is to provide a bipolar plate of an air-cooled fuel cell stack in which the lateral thermal conductivity of the bipolar plate is greater than the longitudinal thermal conductivity, that is, the thermal conductivity of the bipolar plate in a direction perpendicular to the stacking direction is greater than the thermal conductivity thereof in the stacking direction, thereby enhancing the heat dissipation effect of the bipolar plate.
Other advantages and features of the present utility model will become apparent from the following detailed description.
Accordingly, according to the present utility model, an air-cooled fuel cell stack having at least one of the above advantages, comprises:
a plurality of membrane electrode assemblies; and
the air-cooled fuel cell stack comprises a plurality of bipolar plates, wherein the bipolar plates and the membrane electrode assemblies are alternately stacked in the stacking direction of the air-cooled fuel cell stack, anode flow fields of the air-cooled fuel cell stack are formed between the anode sides of the bipolar plates and the membrane electrode assemblies, and cathode flow fields of the air-cooled fuel cell stack are formed between the cathode sides of the bipolar plates and the membrane electrode assemblies, wherein cooling flow fields of the air-cooled fuel cell stack and the anode flow fields are mutually staggered, and the cooling flow fields of the air-cooled fuel cell stack and the cathode flow fields are mutually staggered.
In one embodiment, the bipolar plate comprises a main body portion and at least one extension portion, wherein the extension portion extends laterally outwardly from the main body portion, wherein the main body portion is provided with an anode flow channel, a cathode flow channel and a fluid through hole, the extension portion is provided with a cooling flow channel, wherein the anode flow channel is provided at the anode side of the bipolar plate, the cathode flow channel is provided at the cathode side of the bipolar plate, and the fluid through hole is provided at a first end and a second end of the bipolar plate.
According to another aspect of the present utility model, there is further provided a bipolar plate of an air-cooled fuel cell stack, comprising:
a main body portion; and
at least one extension, wherein the extension extends laterally outwardly from the main body, wherein the main body is provided with an anode flow channel, a cathode flow channel and a fluid through hole, the extension is provided with a cooling flow channel, wherein the anode flow channel is arranged on the anode side of the bipolar plate, the cathode flow channel is arranged on the cathode side of the bipolar plate, and the fluid through hole is arranged at a first end and a second end of the bipolar plate.
In one embodiment, the cooling flow channels are provided on the anode side and/or the cathode side of the bipolar plate.
In one embodiment, the bipolar plate comprises an anode plate and a cathode plate, wherein the anode plate and the cathode plate are disposed on top of each other, wherein a first side of the anode faces a first side of the cathode plate, wherein the body of the bipolar plate comprises an anode plate body and a cathode plate body, the extensions of the bipolar plate comprise an anode plate extension and a cathode plate extension, wherein the anode plate extension extends laterally outward from the anode plate body, the cathode plate extension extends laterally outward from the cathode plate body, wherein the anode plate comprises the anode plate body and the anode plate extension, the cathode plate comprises the cathode plate body and the cathode plate extension, wherein the anode flow channel is disposed in the anode plate body of the anode plate, the cathode flow channel is disposed in the cathode plate body of the cathode plate, wherein the anode flow channel is formed in the anode plate second side, the cathode flow channel is formed in the cathode plate second side, and the cooling flow channel is disposed in the anode plate extension and/or the cathode plate extension.
In one embodiment, the direction of extension of the cooling flow channels is a direction from the first end of the bipolar plate to the second end of the bipolar plate or a direction from the second end of the bipolar plate to the first end of the bipolar plate.
In one embodiment, the bipolar plate has a lateral thermal conductivity greater than a longitudinal thermal conductivity.
The foregoing and other advantages of the utility model will become more fully apparent from the following description and appended drawings.
The above and other advantages and features of the present utility model are readily apparent from the following detailed description of the utility model and the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a part of the structure of a fuel cell stack of the related art.
Fig. 2 is a schematic structural view of an air-cooled fuel cell stack according to an embodiment of the present utility model.
Fig. 3 is a perspective view of a bipolar plate of an air-cooled fuel cell stack according to one embodiment of the present utility model.
Fig. 4 is a cross-sectional view of a bipolar plate of an air-cooled fuel cell stack according to the above-described embodiment of the present utility model.
Fig. 5 is a partially enlarged view of a cross-sectional view of a bipolar plate of an air-cooled fuel cell stack according to the above embodiment of the present utility model.
Fig. 6 is a perspective view of a bipolar plate of an air-cooled fuel cell stack according to another embodiment of the present utility model.
Fig. 7 is an exploded view of a bipolar plate of an air-cooled fuel cell stack according to the above embodiment of the present utility model.
Fig. 8 is a cross-sectional view of a bipolar plate of an air-cooled fuel cell stack according to the above-described embodiment of the present utility model.
Fig. 9 is a partially enlarged view of a cross-sectional view of a bipolar plate of an air-cooled fuel cell stack according to the above embodiment of the present utility model.
Fig. 10 is a perspective view of a bipolar plate of an air-cooled fuel cell stack according to a modified embodiment of the above-described embodiment of the present utility model.
Fig. 11 is an exploded view of a bipolar plate of an air-cooled fuel cell stack according to the above embodiment of the present utility model.
Fig. 12 is a cross-sectional view of a bipolar plate of an air-cooled fuel cell stack according to the above-described embodiment of the present utility model.
Fig. 13 is a partially enlarged view of a cross-sectional view of a bipolar plate of an air-cooled fuel cell stack according to the above embodiment of the present utility model.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to practice the utility model. Other obvious substitutions, modifications and changes will occur to one of ordinary skill in the art. Thus, the scope of the utility model should not be limited by the exemplary embodiments described herein.
It will be understood by those of ordinary skill in the art that the terms "a" or "an" should be understood as "at least one" or "one or more" unless specifically indicated herein, i.e., in one embodiment, the number of elements may be one, and in other embodiments, the number of elements may be multiple.
It will be appreciated by those of ordinary skill in the art that unless specifically indicated herein, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., refer to an orientation or position based on that shown in the drawings, merely for convenience of description of the present utility model, and do not denote or imply that the devices or elements involved must have a particular orientation or position. Accordingly, the above terms should not be construed as limiting the present utility model.
Referring to fig. 2 to 13 of the drawings of the specification, an air-cooled fuel cell stack and bipolar plates thereof according to an embodiment of the present utility model are illustrated. The air-cooled fuel cell stack comprises a plurality of bipolar plates 1 and a plurality of membrane electrode assemblies 2, wherein the bipolar plates 1 and the membrane electrode assemblies 2 are alternately stacked in the stacking direction of the air-cooled fuel cell stack, wherein an anode flow field of the air-cooled fuel cell stack is formed between an anode side 101 of the bipolar plate 1 and the membrane electrode assemblies 2, and a cathode flow field of the air-cooled fuel cell stack is formed between a cathode side 102 of the bipolar plate 1 and the membrane electrode assemblies 2, wherein a cooling flow field of the air-cooled fuel cell stack and the anode flow field are offset from each other, and the cooling flow field and the cathode flow field of the air-cooled fuel cell stack are offset from each other. Unlike the existing fuel cell stack, the cooling flow field is no longer located between the anode flow field and the cathode flow field, so that the air-cooled fuel cell stack has smaller size in the stacking direction, namely, the overall thickness is thinner, and the air-cooled fuel cell stack can be suitable for certain application scenes with severe requirements on thickness dimension. It should be noted that the air-cooled fuel cell stack further includes conventional components known to those skilled in the art, such as an end plate, an insulating plate, a current collecting plate, a first and a second flow field plates, and/or a cooling fan, which will not be further described herein.
As shown in fig. 2 to 5 of the drawings of the specification, in one embodiment of the present utility model, the bipolar plate 1 includes a main body portion 11 and at least one extension portion 12, wherein the extension portion 12 extends laterally outwardly from the main body portion 11, wherein the "lateral" refers to the stacking direction perpendicular to the air-cooled fuel cell stack. The main body 11 is provided with an anode flow channel 111, a cathode flow channel 112 and fluid through holes 113, wherein the anode flow channel 111 is arranged at the anode side 101 of the bipolar plate 1 for forming the anode flow field between the anode side 101 of the bipolar plate 1 and the membrane electrode assembly 2, the cathode flow channel 112 is arranged at the cathode side 102 of the bipolar plate 1 for forming the cathode flow field between the cathode side 102 of the bipolar plate 1 and the membrane electrode assembly 2, the fluid through holes 113 are arranged at the first end 103 and the second end 104 of the bipolar plate 1 as inlet and outlet of hydrogen and air, respectively. The extension 12 is provided with a cooling flow channel 121, wherein the cooling flow channel 121 may be provided at one side or both sides of the extension 12. In other words, the cooling flow channels 121 are arranged at the anode side and/or the cathode side of the bipolar plate 1. Preferably, as shown in fig. 4 and 5, the cooling channels 121 are provided on both sides of the extension 12, that is, the cooling channels 121 are provided on the anode side 101 and the cathode side 102 of the bipolar plate 1. In particular, the direction of extension of the cooling flow channels 121 is perpendicular to the direction of extension of the cooling flow channels of an existing air-cooled fuel cell stack, compared to an existing air-cooled fuel cell stack, wherein the direction of extension of the cooling flow channels 121 is a direction from the first end 103 of the bipolar plate 1 toward the second end 104 of the bipolar plate 1 or a direction from the second end 104 of the bipolar plate 1 toward the first end 103 of the bipolar plate 1, such that the cooling flow channels 121 can extend from one end to the other end of the air-cooled fuel cell stack without passing between the anode flow field and the cathode flow field. Furthermore, as will be understood by those skilled in the art, the heat transfer of the bipolar plate 1 is conducted laterally from the main body 11 to the extension 12, and then the heat of the extension 12 is carried away by the heat dissipation fan of the air-cooled fuel cell stack, so that the lateral thermal conductivity of the bipolar plate 1 is greater than the longitudinal thermal conductivity, that is, the thermal conductivity of the bipolar plate 1 in the direction perpendicular to the stacking direction is greater than the thermal conductivity in the stacking direction.
It should be noted that, in the above embodiment of the present utility model, the bipolar plate 1 has an integral structure, which may be integrally formed according to the manufacturing process of the molded graphite plate in the field of fuel cells, or may be manufactured by a complete plate material according to the manufacturing process of the machined graphite plate in the field of fuel cells. It will be appreciated that the bipolar plate 1 has only one plate body, rather than being formed by two separate plate bodies, a cathode plate and an anode plate, which are stacked one upon the other. In other words, in the embodiment of the present utility model, since the cooling flow field is no longer located between the anode flow field and the cathode flow field, it is not necessary to separately manufacture the anode plate and the cathode plate for the purpose of providing the cooling flow channels and forming the cooling flow field, respectively. Of course, the bipolar plate 1 is still an alternative embodiment of the present utility model, which is composed of two plate bodies, namely an anode plate and a cathode plate, and reference is made specifically to the following examples.
As shown in fig. 6 to 13 of the drawings of the specification, the bipolar plate 1 comprises an anode plate 3 and a cathode plate 4, wherein the anode plate 3 and the cathode plate 4 are arranged on top of each other to constitute the bipolar plate 1, wherein a first side 301 of the anode plate 3 faces a first side 401 of the cathode plate 4. The body portion 11 of the bipolar plate 1 comprises an anode plate body portion 31 and a cathode plate body portion 41, the extension 12 of the bipolar plate 1 comprises an anode plate extension 32 and a cathode plate extension 42, wherein the anode plate extension 32 extends laterally outwardly from the anode plate body portion 31, and the cathode plate extension 42 extends laterally outwardly from the cathode plate body portion 41, wherein the anode plate 3 comprises the anode plate body portion 31 and the anode plate extension 32, and the cathode plate 4 comprises the cathode plate body portion 41 and the cathode plate extension 42. The anode flow channel 111 is provided in the anode plate body 31 of the anode plate 3, the cathode flow channel 112 is provided in the cathode plate body 41 of the cathode plate 4, wherein the anode flow channel 111 is formed in the second side 302 of the anode plate 3, and the cathode flow channel 112 is formed in the second side 402 of the cathode plate 4. It will be appreciated that the first side 301 of the anode plate 3 and the second side 302 of the anode plate 3 are opposite to each other, and the first side 401 of the cathode plate 4 and the second side 402 of the cathode plate 4 are opposite to each other. It will also be appreciated that the second side 302 of the anode plate 3 is the anode side 101 of the bipolar plate 1 and the second side 402 of the cathode plate 4 is the cathode side 102 of the bipolar plate 1.
In particular, the cooling flow channels 121 are arranged at the anode plate extension 32 and/or the cathode plate extension 42, wherein the cooling flow channels 121 may be arranged at the first side 301 of the anode plate 3 and/or the second side 302 of the anode plate 3, as well as at the first side 401 of the cathode plate 4 and/or the second side 402 of the cathode plate 4. As shown in fig. 6-9, in an alternative implementation of the present embodiment, the cooling channels 121 are disposed on the second side 302 of the anode plate 3 and the second side 402 of the cathode plate 4. As shown in fig. 10 to 13, in another alternative implementation of the present embodiment, the cooling flow channels 121 are provided on the first side 301 of the anode plate 3 and the first side 401 of the cathode plate 4.
It is worth mentioning that in the above-described embodiment, the lateral thermal conductivity of the anode plate 3 and the cathode plate 4 is greater than the longitudinal thermal conductivity, that is, the thermal conductivity of the anode plate 3 and the cathode plate 4 in the direction perpendicular to the stacking direction is greater than the thermal conductivity thereof in the stacking direction.
It is noted that the first and second are used herein only to name and distinguish between different components (or elements) of the present utility model, which themselves do not have a somewhat sequential or numerical meaning.
It will be appreciated by persons skilled in the art that the embodiments described above and shown in the drawings are only for the purpose of illustrating the utility model and are not to be construed as limiting the utility model. All equivalent implementations, modifications and improvements within the spirit of the present utility model are intended to be included within the scope of the present utility model.
Claims (10)
1. An air-cooled fuel cell stack, comprising:
a plurality of membrane electrode assemblies; and
the air-cooled fuel cell stack comprises a plurality of bipolar plates, wherein the bipolar plates and the membrane electrode assemblies are alternately stacked in the stacking direction of the air-cooled fuel cell stack, anode flow fields of the air-cooled fuel cell stack are formed between the anode sides of the bipolar plates and the membrane electrode assemblies, and cathode flow fields of the air-cooled fuel cell stack are formed between the cathode sides of the bipolar plates and the membrane electrode assemblies, wherein cooling flow fields of the air-cooled fuel cell stack and the anode flow fields are mutually staggered, and the cooling flow fields of the air-cooled fuel cell stack and the cathode flow fields are mutually staggered.
2. The air-cooled fuel cell stack of claim 1, wherein the bipolar plate comprises a main body portion and at least one extension portion, wherein the extension portion extends laterally outward from the main body portion, wherein the main body portion is provided with an anode flow channel, a cathode flow channel, and a fluid through-hole, wherein the extension portion is provided with a cooling flow channel, wherein the anode flow channel is disposed on the anode side of the bipolar plate, the cathode flow channel is disposed on the cathode side of the bipolar plate, and the fluid through-hole is disposed at a first end and a second end of the bipolar plate.
3. The air-cooled fuel cell stack according to claim 2, wherein the cooling flow channels are provided on the anode side and/or the cathode side of the bipolar plate.
4. The air-cooled fuel cell stack of claim 2 wherein the bipolar plate comprises an anode plate and a cathode plate, wherein the anode plate and the cathode plate are disposed on top of each other, wherein a first side of the anode plate faces a first side of the cathode plate, wherein the body of the bipolar plate comprises an anode plate body and a cathode plate body, the extensions of the bipolar plate comprise an anode plate extension and a cathode plate extension, wherein the anode plate extension extends laterally outward from the anode plate body, the cathode plate extension extends laterally outward from the cathode plate body, wherein the anode plate comprises the anode plate body and the anode plate extension, the cathode plate comprises the cathode plate body and the cathode extension, wherein the anode flow channels are disposed in the anode plate body, the cathode flow channels are disposed in the cathode plate body, wherein the anode flow channels are formed in the anode plate second side, the cathode flow channels are formed in the cathode plate second side, and the cooling flow channels are disposed in the anode plate extension and/or the cathode plate extension.
5. The air-cooled fuel cell stack according to any one of claims 2-4, wherein the direction of extension of the cooling flow channels is a direction from the first end portion of the bipolar plate toward the second end portion of the bipolar plate or a direction from the second end portion of the bipolar plate toward the first end portion of the bipolar plate.
6. A bipolar plate for an air-cooled fuel cell stack, comprising:
a main body portion; and
at least one extension, wherein the extension extends laterally outwardly from the main body, wherein the main body is provided with an anode flow channel, a cathode flow channel and a fluid through hole, the extension is provided with a cooling flow channel, wherein the anode flow channel is arranged on the anode side of the bipolar plate, the cathode flow channel is arranged on the cathode side of the bipolar plate, and the fluid through hole is arranged at a first end and a second end of the bipolar plate.
7. The bipolar plate of an air-cooled fuel cell stack of claim 6 wherein the cooling flow channels are disposed on the anode side and/or the cathode side of the bipolar plate.
8. The bipolar plate of an air-cooled fuel cell stack of claim 6 wherein the bipolar plate comprises an anode plate and a cathode plate, wherein the anode plate and the cathode plate are disposed on top of each other, wherein a first side of the anode plate faces a first side of the cathode plate, wherein the body of the bipolar plate comprises an anode plate body and a cathode plate body, wherein the extensions of the bipolar plate comprise an anode plate extension and a cathode plate extension, wherein the anode plate extension extends laterally outward from the anode plate body, wherein the anode plate comprises the anode plate body and the anode plate extension, wherein the cathode plate comprises the cathode plate body and the cathode plate extension, wherein the anode flow channel is disposed in the anode plate body of the anode plate, wherein the anode flow channel is formed in the second side of the anode plate, wherein the cathode flow channel is formed in the second side of the extension, and wherein the cooling flow channel is disposed in the anode plate body and/or the cathode plate extension.
9. The bipolar plate of an air-cooled fuel cell stack according to any one of claims 6-8 wherein the direction of extension of the cooling flow channels is from the first end of the bipolar plate to the second end of the bipolar plate or from the second end of the bipolar plate to the first end of the bipolar plate.
10. The bipolar plate of an air-cooled fuel cell stack according to any of claims 6-8 wherein the bipolar plate has a lateral thermal conductivity greater than a longitudinal thermal conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320586891.8U CN220358139U (en) | 2023-03-23 | 2023-03-23 | Air-cooled fuel cell stack and bipolar plate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320586891.8U CN220358139U (en) | 2023-03-23 | 2023-03-23 | Air-cooled fuel cell stack and bipolar plate thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220358139U true CN220358139U (en) | 2024-01-16 |
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| CN202320586891.8U Active CN220358139U (en) | 2023-03-23 | 2023-03-23 | Air-cooled fuel cell stack and bipolar plate thereof |
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| Country | Link |
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| CN (1) | CN220358139U (en) |
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- 2023-03-23 CN CN202320586891.8U patent/CN220358139U/en active Active
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