CN113410488A - Flow field plate and fuel cell including the same - Google Patents
Flow field plate and fuel cell including the same Download PDFInfo
- Publication number
- CN113410488A CN113410488A CN202110861021.2A CN202110861021A CN113410488A CN 113410488 A CN113410488 A CN 113410488A CN 202110861021 A CN202110861021 A CN 202110861021A CN 113410488 A CN113410488 A CN 113410488A
- Authority
- CN
- China
- Prior art keywords
- convection
- flow
- field plate
- runner
- flow field
- Prior art date
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000009792 diffusion process Methods 0.000 abstract description 7
- 239000003054 catalyst Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010013496 Disturbance in attention Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- 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 discloses a flow field plate and fuel cell including this flow field plate, including base member and runner group, the runner group sets up on the base member, runner group includes a plurality of interval arrangement's runner, the convection block is arranged in the runner along the length direction interval of runner, the ratio of the height of convection block and the degree of depth of runner is 0.4~0.7, the runner forms runner degree of depth variable structure through setting up the convection block, the first end of runner is the entrance point, the second end of runner is the exit end, all convection blocks in single runner form the convection block group, the convection block group in the interval between two adjacent convection blocks be the water conservancy diversion interval, the water conservancy diversion interval is increased the setting gradually by entrance point to exit end. The diffusion of the flow channel to the catalyst layer can be realized, the under-ridge convection of the adjacent flow channels can be enhanced, and the galvanic pile can not be flooded due to the variable depth structure of the flow channel.
Description
Technical Field
The present application relates to the field of fuel cells, and more particularly, to a flow field plate and a fuel cell including the same.
Background
Proton Exchange Membrane Fuel Cells (PEMFCs) have the advantages of high efficiency, high energy density, and low pollution, and thus have received extensive attention from researchers in many fields.
The flow field plate is an important component of a proton exchange membrane fuel cell and mainly comprises a substrate and a flow channel arranged on the substrate. The existing flow field plate can cause the existence of ridges due to structural limitation, and the existence of the ridges can further compress a reaction area, so that the concentration of reaction gas of a catalytic layer is further reduced, and the fuel utilization rate and the cell output are reduced.
In order to solve the above technical problem, a chinese patent with application publication No. CN10898764A is disclosed in the prior art, and the patent discloses a flow field plate, which is characterized by comprising: a base having a plurality of flow channels thereon; and the spiral ribs are distributed in the flow channel along the length direction of the flow channel, and two ends of each spiral rib are bent towards opposite directions.
However, the above patent can only realize the gas flowing in the flow channel, and cannot realize the under-ridge convection between the adjacent flow channels, and if the above patent needs to realize the under-ridge convection, the ratio between the height of the spiral rib and the depth of the flow channel needs to be increased, but if the ratio is greater than 0.4, the spiral rib will hinder the discharge of the produced water under the condition of large current density working condition.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to increase the ratio between the height and the depth to achieve the combined effect of the under-ridge convection of the adjacent flow channels and the diffusion of the flow channels to the catalyst layer, and to avoid the flooding of the stack due to the variable depth structure of the flow channels.
Disclosure of Invention
The flow field plate mainly solves the technical problems in the prior art, can realize diffusion of flow channels to a catalyst layer and enhance under-ridge convection between adjacent flow channels, and can not cause water flooding of a pile due to a flow channel depth variable structure.
In order to solve the technical problems and achieve the above object, an aspect of the present invention provides a flow field plate, which includes a substrate and a flow channel group, wherein the flow channel group is disposed on the substrate, the flow channel group includes a plurality of flow channels arranged at intervals, convection blocks are arranged in the flow channels at intervals along a length direction of the flow channels, a ratio of a height of the convection blocks to a depth of the flow channels is 0.4 to 0.7, the flow channels form a structure with a variable depth of the flow channels by disposing the convection blocks, a first end of the flow channel is an inlet end, a second end of the flow channel is an outlet end, all the convection blocks in a single flow channel form a convection block group, a distance between two adjacent convection blocks in the convection block group is a flow guiding distance, and the flow guiding distance gradually increases from the inlet end to the outlet end.
And a flow guide section is arranged on one side of the flow channel, which is close to the outlet end, and the convection block is not arranged in the flow guide section.
Any convection block is positioned between two adjacent convection blocks of the adjacent convection block group to form the vertically staggered arrangement of the two adjacent convection block groups.
The cross section of the flow channel is of a groove-shaped structure formed by a bottom surface and two side surfaces.
The convection block is connected with the bottom surface and is formed by protruding upwards, and the convection block is connected with the two side surfaces.
The convection block is close to the inlet end and is provided with a convection inclined plane, and the convection inclined plane and the bottom surface form a convection included angle.
The convection block is provided with an outlet inclined plane close to the outlet end, and the outlet inclined plane and the bottom surface form an outlet included angle.
Wherein the included convection angle is less than the included outlet angle.
Wherein, the runner is the parallel runner.
In order to solve the above-mentioned technical problem and achieve the above-mentioned object, according to another aspect of the present invention, there is provided a fuel cell including: a cathode flow field plate and an anode flow field plate, at least one of which is a flow field plate in the embodiments described below.
The flow field plate and the fuel cell comprising the flow field plate have the following beneficial effects:
1. when gas enters from an inlet end and flows out from an outlet end through a flow channel, convection blocks are arranged at intervals along the length direction of the flow channel, the flow channel is provided with the convection blocks to form a flow channel depth variable structure, the ratio of the height of the convection blocks to the depth of the flow channel is 0.4-0.7, so that pressure difference is formed between different flow channels when the gas flows, the under-ridge convection between adjacent flow channels is enhanced, the flow guide interval is gradually increased from the inlet end to the outlet end, the mobility of water in the flow channel is enhanced, and the galvanic pile flooding caused by the flow channel depth variable structure is avoided;
2. the convection block is not arranged in the flow guide section, so that the mobility of water in the flow channel is further enhanced, and the galvanic pile flooding caused by the variable structure of the depth of the flow channel is further avoided;
3. the two adjacent convection block groups are arranged in a vertically staggered manner, so that gas can easily flow to adjacent flow passages during the under-ridge convection;
4. the convection inclined plane and the bottom surface form a convection included angle, so that the gas in the flow channel generates a sub-velocity vertical to the diffusion layer, and the diffusion effect of the gas in the flow channel to the catalyst layer is enhanced.
Drawings
FIG. 1 is a front view of an embodiment of the present application;
FIG. 2 is a left side view of an embodiment of the present application;
FIG. 3 is a cross-sectional view of embodiment A-A of the present application;
FIG. 4 is an isometric view of an embodiment of the present application;
FIG. 5 is an enlarged view of a portion of the embodiment A of the present application;
fig. 6 is a partially enlarged view of the embodiment B of the present application.
The reference numbers in the figures illustrate: 1. a substrate; 2. a flow channel; 3. a convection block; 4. an inlet end; 5. an outlet end; 6. a flow guide distance; 7. a flow guide section; 8. a bottom surface; 9. a side surface; 10. a convection slope; 11. an outlet bevel.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The flow field plate in the prior art can only realize the flow of gas in the flow channel, can not realize the under-ridge convection between adjacent flow channels, and the spiral rib can obstruct the discharge of the generated water under the premise of the working condition of high current density.
Therefore, the embodiment of the application provides a flow field plate, which comprises a base body 1 and a flow channel group, wherein the flow channel group is arranged on the base body 1 and comprises a plurality of flow channels 2 arranged at intervals, convection blocks 3 are arranged in the flow channels 2 at intervals along the length direction of the flow channels 2, the ratio of the height of the convection blocks 3 to the depth of the flow channels 2 is 0.4-0.7, the flow channels 2 form a flow channel depth variable structure by arranging the convection blocks 3, the first end of the flow channel 2 is an inlet end 4, the second end of the flow channel 2 is an outlet end 4, all the convection blocks 3 in a single flow channel 2 form a convection block group, the distance between two adjacent convection blocks 4 in the convection block group is a flow guide distance 6, and the flow guide distance 6 is gradually increased from the inlet end 4 to the outlet end 5. Therefore, not only can the diffusion of the flow channel 2 to the catalytic layer be realized, but also the under-ridge convection of the adjacent flow channel can be enhanced, and the galvanic pile can not be flooded by water due to the variable depth structure of the flow channel.
Example 1
Fig. 1-6 illustrate one embodiment of a flow field plate of the present application.
Referring to fig. 1, the flow field plate includes a substrate 1 and a channel group, the substrate 1 is formed by at least one of stainless steel, titanium and titanium alloy, the channel group is disposed on the substrate 1, the channel group includes a plurality of channels 2 arranged at intervals, wherein the channels 2 may be parallel channels, serpentine channels or interdigital channels, preferably, the parallel channels are selected, and convection blocks 3 are arranged at intervals in the channels 2 along the length direction of the channels 2.
Referring to fig. 2, the ratio of the height of the convection block 3 to the depth of the flow channel 2 is 0.4 to 0.7, and preferably the ratio of the height of the convection block 3 to the depth of the flow channel 2 is 0.4, 0.41, 0.5, 0.6, or 0.7.
Referring to fig. 3, the flow channel 2 is provided with convection blocks 3 to form a flow channel depth variable structure, the first end of the flow channel 2 is an inlet end 4, the second end of the flow channel 2 is an outlet end 5, all the convection blocks 3 in a single flow channel 2 form a convection block set, the distance between two adjacent convection blocks 3 in the convection block set is a flow guiding distance 6, and the flow guiding distance 6 is gradually increased from the inlet end 4 to the outlet end 5, i.e., L4 > L3 > L2 > L1 as shown in fig. 3.
However, the ratio of the height of the convection block 3 to the depth of the flow channel 2 in the prior art is only 0.4 at most, and in the prior art, gas can only realize the flow in the flow channel 2, but cannot realize the under-ridge convection between the adjacent flow channels 2, if the under-ridge convection is realized, the ratio of the height of the convection block 3 to the depth of the flow channel 2 can only be improved, but when the ratio is greater than 0.4, the water flooding condition of the galvanic pile can be generated.
This application is gaseous by entrance point 4 entering runner 2 and flow by exit end 5, and the height of convection current piece 3 is 0.4~0.7 with the degree of depth ratio of runner 2, thereby form pressure differential between different runners 2 when gas flows, and strengthened the spine between adjacent runner 2 and down the convection current, set up water conservancy diversion interval 6 by entrance point 4 to exit end 5 increase gradually, thereby reinforcing water is the mobility in runner 2, avoid leading to the pile water logging because of runner degree of depth varistructure. The flow field plate is applied to the fuel cell, on one hand, the diffusion effect of gas in the enhanced flow channel 2 to a catalyst layer of the fuel cell is facilitated, on the other hand, the under-ridge convection between the adjacent flow channels 2 is facilitated to be enhanced, the concentration loss is reduced, the fuel utilization rate is improved, and the performance of the fuel cell is improved.
As shown in fig. 4, a flow guide section 7 is arranged on one side of the flow channel 2 close to the outlet end 5, and the convection block 3 is not arranged in the flow guide section 7, and in an optimal state, the length ratio between the flow guide section 7 and the flow channel 2 is 0.2-0.4, and in an optimal state, the length ratio is 0.2 or 0.3 or 0.4, so that the flowability of water flow in the flow channel 2 is further enhanced, and the galvanic pile flooding caused by a flow channel depth variable structure is further avoided.
In order to improve the effect of under-ridge convection, any convection block 3 is arranged between two adjacent convection blocks 3 of the adjacent convection block groups to form the up-and-down staggered arrangement of the two adjacent convection block groups, so that the gas can flow to the adjacent flow channel 2 more easily during under-ridge convection.
As shown in fig. 2, the cross section of the flow channel 2 is a groove structure formed by a bottom surface 8 and two side surfaces 9, and the cross section is preferably rectangular.
In a further aspect, the convection block 3 is connected to the bottom surface 8 and is formed to be upwardly protruded, and the convection block 3 is connected to the both side surfaces 9.
As shown in fig. 5 and 6, the convection block 3 is provided with a convection inclined surface 10 near the inlet end 4, the convection inclined surface 10 forms a convection included angle with the bottom surface 8, the convection block 3 is provided with an outlet inclined surface 11 near the outlet end 5, and the outlet inclined surface 11 forms an outlet included angle with the bottom surface 8.
In a further aspect, the convection included angle is smaller than the outlet included angle, wherein the longitudinal section of the convection block 3 is trapezoidal, and the convection inclined plane 10 and the outlet inclined plane 11 are respectively disposed corresponding to two waists of the trapezoid.
Example 2:
an embodiment of a fuel cell is disclosed. Comprises a cathode flow field plate and an anode flow field plate, wherein at least one of the cathode flow field plate and the anode flow field plate is the flow field plate in the embodiment 1. Preferably, both the anode flow field plate and the cathode flow field plate are the flow field plates of example 1.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A flow field plate is characterized by comprising a base body (1) and a flow channel group, wherein the flow channel group is arranged on the base body (1) and comprises a plurality of flow channels (2) which are arranged at intervals, convection blocks (3) are arranged in the flow channels (2) at intervals along the length direction of the flow channels (2), the ratio of the height of the convection blocks (3) to the depth of the flow channels (2) is 0.4-0.7, the flow channels (2) form a structure with variable flow channel depth by arranging the convection blocks (3), the first ends of the flow channels (2) are inlet ends (4), the second ends of the flow channels (2) are outlet ends (5), all the convection blocks (3) in a single flow channel (2) form a convection block group, the distance between two adjacent convection blocks (3) in the convection block group is a flow guide distance (6), and the flow guide distance (6) is gradually increased from the inlet ends (4) to the outlet ends (5) and is arranged .
2. A flow field plate according to claim 1, characterised in that the flow channels (2) are provided with flow guiding segments (7) on the side close to the outlet end (5), and that no convection block (3) is provided in the flow guiding segments (7).
3. A flow field plate according to claim 1, wherein any one of said convection blocks (3) is located between two adjacently arranged convection blocks (3) of adjacent convection block groups to form an up-down staggered arrangement of two adjacent convection block groups.
4. A flow field plate according to claim 1, characterised in that the flow channels (2) have a channel-shaped structure in cross-section formed by a bottom surface (8) and two side surfaces (9).
5. A flow field plate according to claim 4, characterised in that the convection block (3) is connected to the bottom surface (8) and is formed convex upwards, the convection block (3) being connected to both side surfaces (9).
6. A flow field plate according to claim 5, characterised in that the convection block (3) is provided with a convection bevel (10) near the inlet end (4), the convection bevel (10) forming a convection angle with the bottom surface (8).
7. A flow field plate according to claim 6, characterised in that the convection block (3) is provided with an exit ramp (11) near the exit end (5), which exit ramp (11) forms an exit angle with the bottom surface (8).
8. A flow field plate as claimed in claim 7, in which the included convection angle is less than the included exit angle.
9. A flow field plate according to any of claims 1-8, characterised in that the flow channels (2) are parallel flow channels (2).
10. A fuel cell, comprising: a cathode flow field plate and an anode flow field plate, at least one of which is a flow field plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110861021.2A CN113410488A (en) | 2021-07-29 | 2021-07-29 | Flow field plate and fuel cell including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110861021.2A CN113410488A (en) | 2021-07-29 | 2021-07-29 | Flow field plate and fuel cell including the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113410488A true CN113410488A (en) | 2021-09-17 |
Family
ID=77687969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110861021.2A Pending CN113410488A (en) | 2021-07-29 | 2021-07-29 | Flow field plate and fuel cell including the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113410488A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114388837A (en) * | 2021-12-03 | 2022-04-22 | 西安交通大学 | The structure of the fuel cell flow channel based on the wing-shaped diversion |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130316263A1 (en) * | 2012-05-27 | 2013-11-28 | Daimler Ag | Convective flow field for fuel cell stack |
| CN209374562U (en) * | 2018-12-22 | 2019-09-10 | 一汽解放汽车有限公司 | A kind of interior bipolar plates with wedge-shaped protrusion of runner |
| CN111697249A (en) * | 2020-05-21 | 2020-09-22 | 武汉中极氢能产业创新中心有限公司 | Flow field plate and flow channel thereof |
| CN215527764U (en) * | 2021-07-29 | 2022-01-14 | 成都亿华通动力科技有限公司 | Flow field plate and fuel cell including the same |
-
2021
- 2021-07-29 CN CN202110861021.2A patent/CN113410488A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130316263A1 (en) * | 2012-05-27 | 2013-11-28 | Daimler Ag | Convective flow field for fuel cell stack |
| CN209374562U (en) * | 2018-12-22 | 2019-09-10 | 一汽解放汽车有限公司 | A kind of interior bipolar plates with wedge-shaped protrusion of runner |
| CN111697249A (en) * | 2020-05-21 | 2020-09-22 | 武汉中极氢能产业创新中心有限公司 | Flow field plate and flow channel thereof |
| CN215527764U (en) * | 2021-07-29 | 2022-01-14 | 成都亿华通动力科技有限公司 | Flow field plate and fuel cell including the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114388837A (en) * | 2021-12-03 | 2022-04-22 | 西安交通大学 | The structure of the fuel cell flow channel based on the wing-shaped diversion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110212214B (en) | Bipolar plate flow field structure in fuel cell and bipolar plate | |
| US5998055A (en) | Gas-passage plates of a fuel cell | |
| CN112786913B (en) | Bipolar plate and fuel cell comprising same | |
| EP3188294B1 (en) | Porous panel for separator of fuel cell | |
| WO2022242404A1 (en) | Bipolar plate having asymmetric flow field, fuel cell stack, and power generation system | |
| CN112909285A (en) | Interdigitated variable cross-section flow channel structure of fuel cell and bipolar plate | |
| CN215220769U (en) | Bipolar plate of interdigitated variable cross-section flow channel structure of fuel cell | |
| CN217158242U (en) | Flow channel structure for fuel cell bipolar plate | |
| CN215527764U (en) | Flow field plate and fuel cell including the same | |
| CN212542497U (en) | Flow field plates and fuel cells for fuel cells | |
| CN210006824U (en) | Bipolar plate flow field structure and bipolar plate in fuel cells | |
| CN113097525A (en) | Bipolar plate and single cell comprising same | |
| CN210489736U (en) | A flow field structure of a fuel cell | |
| CN113410488A (en) | Flow field plate and fuel cell including the same | |
| CN211507775U (en) | Fuel cell polar plate and fuel cell | |
| CN101800319B (en) | Electrode plate for fuel cell and fuel cell thereof | |
| CN216850002U (en) | Metal bipolar plate of fuel cell | |
| CN215771215U (en) | Battery bipolar plate distribution head, proton exchange membrane fuel cell and unmanned sailing boat | |
| CN214280024U (en) | Fuel cell bipolar plate and fuel cell | |
| KR20220094755A (en) | Multiple perforation plate for separator of fuel cell | |
| CN219419099U (en) | Anode flow field structure of fuel cell bipolar plate | |
| CN114759208B (en) | Fuel cell bipolar plate and fuel cell with same | |
| CN114725423B (en) | Bipolar plate and fuel cell | |
| CN115513486B (en) | Monopolar plate, bipolar plate, electric pile and fuel cell | |
| CN116505011A (en) | Method for improving performance of proton exchange membrane fuel cell and multichannel serpentine flow field bipolar plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |