CN114068979A - Fuel cell flow field plate with flow channel adaptively and gradually changed for liquid water - Google Patents
Fuel cell flow field plate with flow channel adaptively and gradually changed for liquid water Download PDFInfo
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- CN114068979A CN114068979A CN202111178540.5A CN202111178540A CN114068979A CN 114068979 A CN114068979 A CN 114068979A CN 202111178540 A CN202111178540 A CN 202111178540A CN 114068979 A CN114068979 A CN 114068979A
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- flow channel
- field plate
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000007788 liquid Substances 0.000 title claims abstract description 36
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 230000003044 adaptive effect Effects 0.000 claims abstract description 34
- 239000000376 reactant Substances 0.000 claims abstract description 32
- 239000012495 reaction gas Substances 0.000 claims abstract description 8
- 238000010926 purge Methods 0.000 claims abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000011664 nicotinic acid Substances 0.000 claims description 2
- 238000003487 electrochemical reaction Methods 0.000 abstract description 7
- 230000018044 dehydration Effects 0.000 abstract description 2
- 238000006297 dehydration reaction Methods 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005514 two-phase flow Effects 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance 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
- H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a fuel cell flow field plate with a flow channel adaptively and gradually changed for liquid water, which structurally comprises: the inlet and outlet of reactant, distribute several ridges and flow channels on the flow field plate, the adaptive structure in the groove of flow field plate. When liquid water is accumulated in the flow channel, the self-adaptive structure absorbs water and expands, the volume is enlarged, the sectional area of the flow channel is reduced, and the flow channel becomes shallow or narrow gradually. When liquid water stored in the flow channel is not stored any more, under the conditions of the self-operation temperature of the battery and the purging of the reaction gas flow, the internal water is evaporated, the dehydration is contracted, the sectional area of the flow channel is increased, and the normal state is recovered. The invention has certain self-adaptive capacity to the change of the liquid water content by adding the self-adaptive structure, thereby not only accelerating the discharge of the liquid water and the electrochemical reaction rate, but also reducing the pump power consumption and improving the net power of the battery.
Description
The technical field is as follows:
the invention belongs to the field of fuel cells, and particularly relates to a self-adaptive flow field plate structure of a fuel cell.
Background art:
the wide application of clean renewable energy sources is greatly promoted, the proportion of fossil energy sources in primary energy consumption is effectively reduced, and the exhaustion of the fossil energy sources is slowed down. The ecological restoration difficulty and cost brought by the exploitation of fossil energy are great, and the greenhouse gas content in the atmosphere can be obviously increased in the using process, so that the global ecology is endangered, therefore, the clean and efficient renewable energy which can improve the economic benefit and achieve the pollution prevention and control effect is the inevitable requirement of energy safety.
The fuel cell power generation is a new generation of efficient continuous power generation technology following nuclear power generation, hydroelectric power generation and thermal power generation, and chemical energy of reactants is directly converted into electric energy through electrochemical reaction. The fuel cell has the characteristics of wide temperature working range, high specific energy, high specific power, cleanness, high efficiency and the like, and has high economical efficiency and environmental protection.
The flow field plate of a fuel cell is one of the main components of a cell system component, and the performance, the operating efficiency and the manufacturing cost of the cell are closely related to the flow channel design on the flow field plate. The flow field plates play important roles in providing reaction gas flow fields, mechanical support, water heat management and the like. The flow channel structure determines the flowing state of the reaction gas and the generated liquid water in the flow channel, the design of the flow channel is optimized, the liquid water can be promoted to be discharged, the influence of concentration polarization is reduced, and the stability of the operation performance of the battery is guaranteed.
There are two main methods for optimizing the cross-sectional area of the flow channel in the flow field plate: tapered cross-sections and abrupt cross-sections. The flow channel with the gradually-changed section can promote reactants to be transported to the catalyst layer to carry out electrochemical reaction; in addition, the cross-sectional area of the outlet of the flow passage is reduced, so that the concentration of reactants can be increased, and the utilization rate of the reactants is improved. However, the flow channel designed by the methods cannot adapt to variable working condition operation, and when the liquid water content in the flow channel is low, the consumption of pump work can be increased due to the large two-phase flow resistance in the flow channel.
The invention content is as follows:
the present invention aims to overcome the above disadvantages by providing a flow field plate structure that can make a flow channel self-adaptively change according to the liquid water content in the flow channel by adding a self-adaptive structure on the flow channel plane.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a fuel cell flow field plate structure with a flow channel adaptively and gradually changed for liquid water, which is characterized in that: the flow field plate is provided with a plurality of ridges and flow channels, and the flow channel grooves are internally provided with self-adaptive structures fixed by glue.
Furthermore, an adaptive structure with gradually increased thickness or width along the flowing direction of the reactant is arranged in the flow field plate, and when liquid water is accumulated in the flow channel, the adaptive structure absorbs water and expands to enable the cross-sectional area of the flow channel to be gradually reduced along the flowing direction of the reactant; when the liquid water stored in the flow channel is not stored any more, the self-adaptive structure can be dehydrated and shrunk under the condition of heating or purging reaction gas at the operation temperature of the battery, and the cross section area of the flow channel is recovered to be normal, so that the self-adaptive gradual change of the cross section area of the flow channel to the liquid water is realized.
Further, after the self-adaptive structure is saturated in water, the size of the self-adaptive structure is increased, and the cross-sectional area of a flow channel at an outlet is 1/5-3/5 at the inlet.
Furthermore, the flow channel plane or the ridge side is provided with a groove structure, and a part or all of the self-adaptive structure is a structure matched with the groove.
Further, before the self-adaptive structure absorbs water and expands, the flow channel is a direct flow channel or a gradual flow channel.
Further, the best dimension of the groove structure on the flow channel plane or ridge side is as follows: the length is consistent with the length of the flow channel, the width is 0.2 mm-0.9 mm, the depth is gradually deepened or equal-deepened along the flowing direction of reactants, the inlet end is 0mm, and the outlet end is 0.1 mm-0.5 mm.
Further, the adaptive structure does not dissolve at the battery operating temperature.
Furthermore, the humidity-sensitive material used by the self-adaptive structure is harmless to the membrane electrode, and reaches water absorption saturation within 8-10 min in a water flooding environment, and the linear expansion degree of the water absorption saturation is 60-240% under the condition of 80 ℃.
Furthermore, the self-adaptive structure is suitable for interdigital flow fields, snake-shaped flow fields, bionic flow fields, combined flow fields and parallel flow fields.
Further, the convex structure of the adaptive structure is adhered to the groove structure on the flow channel plane or ridge side by using glue which is harmless to the membrane electrode.
In conclusion, the invention has the following beneficial effects:
the invention relates to a flow field plate structure of a fuel cell, which can generate self-adaptive gradual change in a flow channel according to the change of the content of liquid water in the flow channel. When the liquid water in the flow channel is not discharged in time, the liquid water is stored in the flow channel, the self-adaptive structure gradually absorbs water and expands to reach saturation, so that the sectional area of the flow channel is gradually reduced along the flowing direction of the reactant, the flow velocity of the reactant is increased, and the discharge of the liquid water is promoted; when no liquid water is stored in the flow channel, the self-adaptive structure is dehydrated and shrunk, the two-phase flow resistance is reduced, and the pump work consumption is reduced.
Description of the drawings:
FIG. 1 is a front view of an adaptive flow field plate structure of a fuel cell before water absorption and expansion;
FIG. 2 is an isometric view of an adaptive flow field plate structure of a fuel cell after water absorption and expansion;
FIG. 3 is a front view of an adaptive flow field plate structure of a fuel cell after saturated water absorption expansion;
FIG. 4 is an isometric view of an adaptive flow field plate configuration for a fuel cell after a saturated water-absorbent expansion;
FIG. 5 is a comparison partial view of the area A before and after the adaptive structure is saturated and water-absorbed and expanded (left view: before water absorption, right view: after saturated water absorption);
FIG. 6 is a bottom and partial view of FIG. 1;
FIG. 7 is a front view of an adaptive flow field plate structure of a fuel cell before water expansion of case two;
fig. 8 is an isometric view of an adaptive flow field plate structure of a fuel cell after water-swelling for example two;
FIG. 9 is a front view of an adaptive flow field plate structure of a fuel cell after secondary saturated water absorption expansion;
fig. 10 is an isometric view of an adaptive flow field plate structure of a fuel cell after two-saturation water-absorption expansion;
FIG. 11 is a comparison partial view of the area E before and after the adaptive structure is saturated and water-absorbed and expanded (left view: before water absorption, right view: after saturated water absorption);
FIG. 12 is a plan and partial view of a single ridge and two-sided adaptive structure prior to water-swelling for example two;
FIG. 13 is a bottom and partial view of FIG. 7;
in the figure: 1 reactant inlet, 2 reactant outlet, 3 ridges, 4 adaptive structures, 5 runners and 6 grooves.
The specific implementation mode is as follows:
the following further describes embodiments of the present invention with reference to the accompanying drawings and examples:
case one:
as shown in fig. 1 and 2, the adaptive structure 4 having a gradually increasing thickness is completely disposed in the groove 6 such that the flow channel 5 is an equal-depth flow channel 5 in the reactant flow direction. Different reactants respectively enter the flow channels 5 formed between the adjacent ridges 3 from the inlet 1 of the cathode and the anode, continuously diffuse on the flow channels 5 with equal depth along the flowing direction of the reactants, then enter the gas diffusion layer to reach the catalyst layer to generate electrochemical reaction to generate water, and the liquid water is discharged from the outlet 2 along with the reactants. The flow channel structure before water absorption and expansion is equivalent to a straight flow channel, so that reactants in the flow field are uniformly distributed, and the two-phase flow resistance is small.
As shown in fig. 3 and 4, as the electrochemical reaction proceeds, the liquid water in the flow channel 5 is not discharged in time, and when the liquid water is accumulated in the flow channel, the adaptive structure 4 can absorb water and expand, and the volume thereof increases. After water absorption saturation, the width is unchanged, the length is consistent with the length of the flow channel 5, and the thickness is increased, so that the depth of the flow channel 5 becomes gradually shallower along the flowing direction of reactants and becomes gradually shallower into the flow channel 5. The cross-sectional area of the runner 5 gradually decreases along the flowing direction of the reactant, so that the cross-sectional area has a certain acceleration effect on the reactant, the liquid water is accelerated to be discharged, the flooding phenomenon is avoided, and the performance of the battery is improved.
As shown in fig. 5, when the liquid water is no longer accumulated in the shallow flow channel 5, the internal water of the adaptive structure 4 evaporates and shrinks due to dehydration under the conditions of the operation temperature of the battery and the purging of the reactant, and the cross-sectional area of the flow channel 5 increases and returns to the equal depth state. The self-adaptive change of the depth of the flow channel 5 to the liquid water content is realized by adding the self-adaptive structure 4, so that the flow field can be well adapted to the change of working conditions in the operation process, and the output power and the net power of the battery are improved.
As shown in fig. 6, the flow channel plane is provided with a groove 6 structure which is gradually deeper along the flowing direction of the reactant, the bottom surface of the adaptive structure 4 is adhered to the groove 6 plane by glue harmless to the membrane electrode, and the adaptive structure 4 is fixed by adopting a mortise and tenon structure and the glue. In addition, can play certain inflation restriction effect to adaptive structure 4 in the recess with sticky, guarantee that adaptive structure 4 reaches the inflation size of ideal, and then play the effect that promotes the battery performance after making adaptive structure 4 inflation.
Case two:
as shown in fig. 7 and 8, the ridges 3 in the flow field plate are of equal width in the direction of reactant flow, the adaptive structure 4 is of gradually wider and arranged within the ridges 3, and the entire flow channel 5 is a straight flow channel of equal width. The reactant flows into the flow channel 5 from the inlet 1, enters the diffusion layer through diffusion and convection, reaches the catalytic layer to perform electrochemical reaction, and the generated liquid water also enters the flow channel 5 through the diffusion layer and flows out from the outlet 2 together with the reaction gas. The arrangement mode can obviously reduce the two-phase flow resistance of the flow channel 5 when the liquid water content is small, and reduce the pump work consumption.
As shown in fig. 9 and 10, as the electrochemical reaction proceeds, the liquid water in the flow channel 5 is not discharged in time, and when the liquid water accumulates in the flow channel, the adaptive structure 4 in the ridge 3 absorbs water and gradually expands into the flow channel 5, so that the flow channel 5 gradually narrows along the flow direction of the reactant. Compared with the self-adaptive structure 4 before water absorption and expansion, the concentration of the reaction gas is gradually increased along the flow direction of the reactant, the influence of concentration polarization can be reduced, the flow rate of the reactant is also increased, the water drainage capability is enhanced, and the problem of water flooding in the downstream area of the flow channel 5 can be effectively solved.
As shown in fig. 11, when there is no liquid water accumulated in the gradually narrowed flow channel 5, the self-adaptive structure 4 is heated by the battery itself at a certain temperature, and the internal water is evaporated under the purging of the reaction gas, the self-adaptive structure 4 is dehydrated and shrunk, the width of the flow channel 5 is gradually increased and changed to the equal width state, so as to realize the adaptive change of the width of the flow channel 5 to the liquid water content in the flow channel 5.
As shown in fig. 12 and 13, grooves 6 are processed on two sides of the ridge 3, the adaptive structure 4 is inserted into the grooves 6, glue harmless to the membrane electrode is used for adhering the adaptive structure 4 to the grooves 6, and the adaptive structure 4 is fixed by adopting a mortise and tenon structure and the glue, wherein the plane perpendicular to the flow channel 5 is vertical to the grooves 6. The self-adaptive structure 4 in the groove 6 can be limited in expansion to a certain extent, and the self-adaptive structure 4 is ensured to reach an ideal expansion size.
Claims (9)
1. A fuel cell flow field plate with a flow channel adaptively and gradually changed for liquid water is characterized in that: the device comprises a reactant inlet (1) and a reactant outlet (2), wherein a flow field plate is provided with a plurality of ridges (3) and flow channels (5), and a self-adaptive structure (4) is arranged in a flow field plate groove (6); arranging an adaptive structure (4) with gradually increased thickness or width in the flowing direction of the reactants in the flow field plate, and when liquid water is accumulated in the flow channel (5), absorbing water and expanding the adaptive structure (4) to gradually reduce the cross-sectional area of the flow channel (5) in the flowing direction of the reactants; when the liquid water stored in the flow channel (5) is not stored any more, the self-adaptive structure (4) can be dehydrated and shrunk under the condition of heating or purging reaction gas at the operation temperature of the battery, and the cross section area of the flow channel (5) is recovered to be normal, so that the self-adaptive gradual change of the cross section area of the flow channel (5) to the liquid water is realized.
2. A fuel cell flow field plate as claimed in claim 1, wherein: after the self-adaptive structure (4) absorbs water and is saturated, the volume is increased, and the cross-sectional area of the flow channel (5) at the outlet is 1/5-3/5 at the inlet.
3. A fuel cell flow field plate as claimed in claim 1, wherein: the flow channel (5) plane or the ridge (3) side is provided with a groove (6) structure, and a part or the whole of the self-adaptive structure (4) is a structure matched with the groove (6).
4. A fuel cell flow field plate as claimed in claim 1, wherein: before the self-adaptive structure (4) absorbs water and expands, the flow channel (5) is a straight flow channel or a gradual flow channel.
5. A fuel cell flow field plate as claimed in claim 1, wherein: the structural size of a groove (6) on the plane or ridge (3) side of the flow channel (5) is as follows: the length is consistent with the length of the flow channel (5), the width is 0.2 mm-0.9 mm, the depth gradually deepens or is equal to the depth along the flowing direction of reactants, the inlet end is 0mm, and the outlet end is 0.1 mm-0.5 mm.
6. A fuel cell flow field plate as claimed in claim 1, wherein: the adaptive structure (4) does not dissolve at the battery operating temperature.
7. A fuel cell flow field plate as claimed in claim 1, wherein: the moisture-sensitive material used by the self-adaptive structure (4) is harmless to the membrane electrode, and reaches water absorption saturation within 8-10 min in a water flooding environment, and the linear expansion degree of the water absorption saturation is 60-240% under the condition of 80 ℃.
8. A fuel cell flow field plate as claimed in claim 1, wherein: the self-adaptive structure (4) is suitable for an interdigital flow field, a snake-shaped flow field, a bionic flow field, a combined flow field or a parallel flow field.
9. A fuel cell flow field plate as claimed in claim 1, wherein: the convex structure of the self-adaptive structure (4) is adhered to the groove (6) structure on the plane of the flow channel (5) or the ridge (3) side by using glue (7) harmless to the membrane electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111178540.5A CN114068979A (en) | 2021-10-10 | 2021-10-10 | Fuel cell flow field plate with flow channel adaptively and gradually changed for liquid water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111178540.5A CN114068979A (en) | 2021-10-10 | 2021-10-10 | Fuel cell flow field plate with flow channel adaptively and gradually changed for liquid water |
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| Publication Number | Publication Date |
|---|---|
| CN114068979A true CN114068979A (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111178540.5A Pending CN114068979A (en) | 2021-10-10 | 2021-10-10 | Fuel cell flow field plate with flow channel adaptively and gradually changed for liquid water |
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| CN (1) | CN114068979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709441A (en) * | 2022-04-20 | 2022-07-05 | 山东大学 | Variable-section runner polar plate, cooling system, battery and control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10172586A (en) * | 1996-12-03 | 1998-06-26 | Honda Motor Co Ltd | Fuel cell |
| JP2000306591A (en) * | 1993-03-10 | 2000-11-02 | Mitsubishi Electric Corp | Fluid passage |
| JP2005302472A (en) * | 2004-04-09 | 2005-10-27 | Toyota Motor Corp | Fuel cell |
| JP2006147503A (en) * | 2004-11-25 | 2006-06-08 | Honda Motor Co Ltd | Fuel cell stack |
| US20070178341A1 (en) * | 2006-01-27 | 2007-08-02 | Christian Wieser | Gas channel coating with water-uptake related volume change for influencing gas velocity |
| CN101752578A (en) * | 2008-12-19 | 2010-06-23 | 中国科学院大连化学物理研究所 | Method for improving water removal effectiveness of proton exchange membrane fuel battery |
| CN110854406A (en) * | 2019-10-22 | 2020-02-28 | 清华大学 | Bipolar plate for fuel cell |
-
2021
- 2021-10-10 CN CN202111178540.5A patent/CN114068979A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000306591A (en) * | 1993-03-10 | 2000-11-02 | Mitsubishi Electric Corp | Fluid passage |
| JPH10172586A (en) * | 1996-12-03 | 1998-06-26 | Honda Motor Co Ltd | Fuel cell |
| JP2005302472A (en) * | 2004-04-09 | 2005-10-27 | Toyota Motor Corp | Fuel cell |
| JP2006147503A (en) * | 2004-11-25 | 2006-06-08 | Honda Motor Co Ltd | Fuel cell stack |
| US20070178341A1 (en) * | 2006-01-27 | 2007-08-02 | Christian Wieser | Gas channel coating with water-uptake related volume change for influencing gas velocity |
| CN101752578A (en) * | 2008-12-19 | 2010-06-23 | 中国科学院大连化学物理研究所 | Method for improving water removal effectiveness of proton exchange membrane fuel battery |
| CN110854406A (en) * | 2019-10-22 | 2020-02-28 | 清华大学 | Bipolar plate for fuel cell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709441A (en) * | 2022-04-20 | 2022-07-05 | 山东大学 | Variable-section runner polar plate, cooling system, battery and control method thereof |
| CN114709441B (en) * | 2022-04-20 | 2023-09-22 | 山东大学 | Variable-section flow passage polar plate, cooling system, battery and control method of battery |
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