CN206574797U - A kind of fuel cell fluids differential flow field plate - Google Patents
A kind of fuel cell fluids differential flow field plate Download PDFInfo
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- CN206574797U CN206574797U CN201720272507.1U CN201720272507U CN206574797U CN 206574797 U CN206574797 U CN 206574797U CN 201720272507 U CN201720272507 U CN 201720272507U CN 206574797 U CN206574797 U CN 206574797U
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- air inlet
- runner
- sprue
- exhaust
- gas
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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
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Abstract
The utility model discloses a kind of fuel cell fluids differential flow field plate, pole plate is provided with gas flowfield and cooling water flow, wherein gas flowfield includes gas access, gas vent, air inlet sprue, exhaust sprue, air inlet runner, bypassing exhaust road, air inlet section, diffuser and exhaust section, and wherein air inlet section, diffuser and exhaust section constitutes diffusion unit.Air inlet sprue and exhaust sprue are connected with multiple air inlet runners and bypassing exhaust road respectively, the each two ends of air inlet runner and bypassing exhaust road respectively with multiple diffusion units are connected, diffusion unit is uniformly distributed in whole pole plate plane, is independent of each other between each diffusion unit.In the course of work, gas is after the fluid differential action twice, whole gas diffusion layer surface can be more evenly distributed on, gas spreads to gas diffusion layers simultaneously in each diffuser, and the consumption of each diffuser gas will not produce influence to other diffusers, can solve the problem of fuel cell current Density Distribution is uneven.
Description
Technical field
The invention belongs to fuel cell field, more particularly to a kind of fluid differential flow field plate.
Background technology
Fuel cell is a kind of device that chemical energy in fuel is directly converted into electric energy, can realize the height to fuel
Clean utilization is imitated, thus is to alleviate one of the energy become increasingly conspicuous, effective way of environmental problem.Battery pole plates are fuel cells
Important component, primarily serve distribution fluid, conductive and support battery structure effect.
Fluid in flow field mainly includes reacting gas hydrogen, oxygen (or air) and reaction product water (gaseous state or liquid
State), there is important influence to the performance of fuel cell.Reacting gas deficiency can reduce battery efficiency, and reacting gas is distributed not
It can cause localized electrochemical reaction reduced rate or even can not carry out, not only result in battery performance decline, or even can also be by
Electrode hot-spot is caused in electric current distribution inequality, battery life is reduced；Accumulation meeting of the reaction product water in flow field
The electrochemical reaction at catalytic reaction interface is influenceed, fuel cell efficiency is reduced.
Basic flow field form has serpentine flow path, parallel fluid channels, parallel serpentine flow path, interdigital runner, helical flow path and grid
Runner etc..Serpentine flow path only has a runner from the inlet to the outlet on flow field plates, and fuel cell generation can be discharged rapidly
Liquid water, but for the larger flow-field plate of area, can caused by runner is long reaction gas pressure drop it is excessive, in runner back segment reaction gas
Insufficient the problems such as；Parallel fluid channels have the runner of the more parallel connection form of number, and flow passage resistance force of waterproof is small, but due to gas
Flow velocity is slow, and water is difficult discharge, easily causes electrode water logging；The design of parallel serpentine flow path covers serpentine flow path and parallel fluid channels
Design, with larger flexibility, flow channel length and number and the size of runner can be adjusted；Interdigital runner is discontinuous
, fluid is forced through diffusion layer, improves electrode utilization rate, but diffusion layer resistance is larger, and fluid pressure drop is larger, and urges
Agent layer is possible to destroyed；Helical flow path is similar to serpentine flow path, and drainability is preferable, but pressure drop is larger, and flowing easily occurs
Short circuit；Grid flow field is to give up a kind of way of runner, is typically that obstacle is regularly arranged between fluid inlet and outlet, makes
Fluid streams in the hole between obstacle, and the rate of flow of fluid in this runner is relatively low, and drainability is poor, and flow of fluid is uniform
Property is poor, easily water logging occurs in corner.
Current polar plate flow field all employs close mode, whole runner all parallel to pole plate plane, reacting gas from
Entrance sets out, and along flow passage to exporting in pad-face, fluid stream is longer through path.There is obvious disadvantage in this runner form
End, fluid is constantly consumed in flow process, causes thinner than porch reacting gas close to exit reacting gas, plane
Interior electrochemical reaction speed formation difference, electric current distribution is uneven, influences battery performance；In addition, for there is reaction product water
The side pole plate of generation, hydrone can enter polar plate flow passage, and closer to exit, hydrone content is higher, and hydrone is in flow field
In accumulation can influence the electrochemical reaction at catalytic reaction interface, further increase plane in electrochemical reaction speed difference, shadow
Electric current distribution uniformity is rung, fuel cell efficiency is reduced.
The content of the invention
It is an object of the invention to solve the drawbacks of existing fuel battery pole board runner even fluid distribution is poor, there is provided one
Planting makes each position even fluid distribution and the good fluid differential flow field plate of drainage performance in pole plate plane.
A kind of fuel cell fluids differential flow field plate of the present invention, is made up of runner plate and cover plate, is provided with runner plate
Gas flowfield and cooling water flow；The gas flowfield include gas access, gas vent, air inlet sprue, exhaust sprue,
Air inlet runner, bypassing exhaust road, air inlet section, diffuser and exhaust section, wherein air inlet section, diffuser and exhaust section constitute expansion
Throwaway member；Gas access is cylindrical hole with gas vent, is each perpendicular to runner plate plane and in diagonal arrangement；Runner plate
Front and back is provided with parallel air inlet sprue and exhaust sprue, and air inlet sprue and exhaust sprue formation two are recessed
Groove, and respectively with gas access and gas outlet；The back side of runner plate is provided with the identical number for being parallel to each other, being spaced apart
The a plurality of air inlet runner and bypassing exhaust road of amount, form a plurality of groove, air inlet runner and bypassing exhaust road and air inlet main flow
Road and exhaust sprue are arranged vertically, and air inlet runner is connected with air inlet sprue, and bypassing exhaust road connects with exhaust sprue
It is logical；Position between runner plate frontal inlet sprue and exhaust sprue is provided with parallel to air inlet sprue and exhaust main flow
Multiple rows of multiple row diffuser in road, the columns of diffuser is equal to the number in air inlet runner and bypassing exhaust road, each column diffuser shape
Into a plurality of groove be located at corresponding air inlet runner and bypassing exhaust road between the positive projection of pole plate, and its length is equal to
The distance between corresponding air inlet runner and bypassing exhaust road；The two ends of every diffuser are respectively by flat perpendicular to runner plate
The air inlet section and exhaust section in face are connected with air inlet runner and bypassing exhaust road；The cooling water flow include cooling water inlet,
Coolant outlet, water inlet sprue, draining sprue and cooling water platform flow channel；Cooling water inlet and coolant outlet are cylinder
Shape hole, is arranged perpendicular to runner plate plane in diagonal, and cooling water inlet and coolant outlet go out with gas access and gas
Mouth is compared closer to the edge of runner plate；Water inlet sprue and draining sprue are arranged at the back side of runner plate, and parallel to entering
Gas sprue and exhaust sprue, and connected respectively with cooling water inlet and coolant outlet；Cooling water platform flow channel is arranged at
Position between the corresponding air inlet runner of runner back and bypassing exhaust road, it is parallel with air inlet runner and bypassing exhaust road and
Quantity is identical, and the two ends of every cooling water platform flow channel are connected with water inlet sprue and draining sprue respectively；Cover plate and runner
The corresponding position of plate sets gas access, gas vent, cooling water inlet and coolant outlet, and cover plate is arranged at runner plate
The back side.
A kind of fuel cell fluids differential flow field plate of the present invention, the sectional area of each section of the diffusion unit is identical and small
The sectional area in the sectional area in air inlet runner and bypassing exhaust road, air inlet runner and bypassing exhaust road is less than air inlet sprue
With the sectional area of exhaust sprue.
A kind of fuel cell fluids differential flow field plate of the present invention, the diffuser of the diffusion unit is rectangular channel, groove
Width and depth bounds are all 0.3mm to 1mm, and the distance between the adjacent diffuser of same column is less than or equal to the width of groove, adjacent
The distance between two row diffusers are less than or equal to the width of groove.
A kind of fuel cell fluids differential flow field plate of the present invention, the connection of the air inlet sprue and air inlet runner with
And the connection in exhaust sprue and bypassing exhaust road is overlapping mode, air inlet sprue and exhaust sprue and air inlet runner and
Bypassing exhaust road is not in the same plane.
A kind of fuel cell fluids differential flow field plate of the present invention, the groove edge of the diffuser carries out rounding processing.
A kind of fuel cell fluids differential flow field plate of the present invention, the groove bottom of the diffuser could be arranged to arc
Face, is easy to process and clears up.
The material of a kind of fuel cell fluids differential flow field plate of the present invention, runner plate and cover plate is conductive material, described
Sealing is fixed by adhering and sealing material in cover plate and the entity part of runner back.
In a kind of fuel cell fluids differential flow field plate of the present invention, the course of work, reacting gas enters from gas access
Air inlet sprue, due to air inlet sprue and the overlap joint mode of communicating of air inlet runner, gas is preferentially full of whole air inlet main flow
Road so that the gas flow after fluid differential into each air inlet runner is close；Gas into each air inlet runner is by again
Enter after the secondary fluid differential action and do not influenced each other between each diffusion unit in parallel, different diffusion units, it is ensured that flowed through
Reaction gas flow in different diffusion units is close.Gas in diffusion unit enters diffuser, portion gas through air inlet section
In the gas diffusion layers of diffuser incoming fuel battery, residual gas enters bypassing exhaust road, each bypassing exhaust road through exhaust section
The gas of discharge collects in exhaust sprue, and is discharged from gas vent.
From above technical scheme, the beneficial effects of the invention are as follows：
1. gas is after the fluid differential action twice, whole gas diffusion layer surface can be more evenly distributed in,
Gas is spread to gas diffusion layers simultaneously in each diffuser, and the consumption of each diffuser gas will not be produced to other diffusers
Influence, can fundamentally solve the problem of fuel cell current Density Distribution is uneven.
2. for the pole plate for having water to generate, moisture mainly enters each diffuser from gas diffusion layers, because diffuser is very short,
The water of generation will not be gathered, and can enter exhaust section from diffuser rapidly, finally be arranged through bypassing exhaust road and exhaust sprue
Go out to outlet, for the diffuser of arc, drainage effect is more preferable.Because the moisture of generation does not flow through other diffusers, also not
It can be gathered in diffuser, therefore not interfere with the electrochemical reaction at catalytic reaction interface, improve battery performance.
Brief description of the drawings
Fig. 1 is a kind of fuel cell fluids differential flow field plate structural representation of the invention；
Fig. 2 is Fig. 1 sectional schematic diagram；
Fig. 3 is a kind of runner plate positive structure schematic of fuel cell fluids differential flow field plate of the invention；
Fig. 4 is a kind of runner plate structure schematic diagram of fuel cell fluids differential flow field plate of the invention；
Fig. 5 is a kind of flow field structure schematic diagram of fuel cell fluids differential flow field plate of the invention；
Fig. 6 is a kind of flow field projection view of fuel cell fluids differential flow field plate of the invention；
Fig. 7 is a kind of cooling water flow structural representation of fuel cell fluids differential flow field plate of the invention；
Fig. 8 is a kind of covering plate structure schematic diagram of fuel cell fluids differential flow field plate of the invention；
Fig. 9 illustrates for a kind of pole plate section of arcwall face diffuser of fuel cell fluids differential flow field plate of the invention
Figure.
In figure：1. pole plate, 2. gas accesses, 3. gas vents, 4. air inlet sprues, 5. exhaust sprues, 6. enter qi leel
Runner, 7. bypassing exhaust roads, 8. diffusion units, 9. cooling water inlets, 10. coolant outlets, 11. water inlet sprues, 12. drainings
Sprue, 13. cooling water platform flow channels, 81. air inlet sections, 82. diffusers, 83. exhaust sections, 84. arcwall faces, 101. runner plates,
102. cover plate.
Embodiment：
A kind of fuel cell fluids differential flow field plate of the present invention, is made up of runner plate 101 and cover plate 102, such as Fig. 1 and figure
Shown in 2, gas flowfield and cooling water flow are provided with runner plate 101；The gas flowfield includes gas access 2, gas and gone out
Mouth 3, air inlet sprue 4, exhaust sprue 5, air inlet runner 6, bypassing exhaust road 7, air inlet section 81, diffuser 82 and exhaust section
83, wherein air inlet section 81, diffuser 82 and exhaust section 83 constitutes diffusion unit 8；Gas access 2 is circle with gas vent 3
Hole, is each perpendicular to the plane of runner plate 101 and is arranged in diagonal, as shown in Figure 3；The positive both sides of runner plate 101 are provided with flat
Capable air inlet sprue 4 and exhaust sprue 5, air inlet sprue 4 and exhaust two grooves of formation of sprue 5, and respectively with gas
Body entrance 2 is connected with gas vent 3；The back side of runner plate 101 be provided be parallel to each other, the identical quantity that is spaced apart it is a plurality of
Air inlet runner 6 and bypassing exhaust road 7, form a plurality of groove, air inlet runner 6 and bypassing exhaust road 7 and air inlet sprue 4 and
Exhaust sprue 5 is arranged vertically, and air inlet runner 6 is connected with air inlet sprue 4, and bypassing exhaust road 7 connects with exhaust sprue 5
It is logical；As Figure 4-Figure 6.The frontal inlet sprue 4 of runner plate 101 and exhaust sprue 5 between position be provided with parallel to
Multiple rows of multiple row diffuser 82 of air inlet sprue 4 and exhaust sprue 5, the columns of diffuser 82 is equal to air inlet runner 6 and row
The number of qi leel runner 7, a plurality of groove of the formation of each column diffuser 82 is located at corresponding air inlet runner 6 and bypassing exhaust road 7
Between the positive projection of pole plate 1, and its length is equal to the distance between corresponding air inlet runner 6 and bypassing exhaust road 7；Often
The two ends of bar diffuser 82 pass through the air inlet section 81 and exhaust section 83 perpendicular to the plane of runner plate 101 and air inlet runner 6 respectively
Connected with bypassing exhaust road 7,；The cooling water flow includes cooling water inlet 9, coolant outlet 10, water inlet sprue 11, row
Water sprue 12 and cooling water platform flow channel 13；Cooling water inlet 9 and coolant outlet 10 are circular port, perpendicular to runner plate
101 planes are arranged in diagonal, and cooling water inlet 9 and coolant outlet 10 are more leaned on compared with gas access 2 and gas vent 3
The edge of nearly runner plate 101；Water inlet sprue 11 and draining sprue 12 are arranged at the back side of runner plate 101, and parallel to entering
Gas sprue 4 and exhaust sprue 5, and connected respectively with cooling water inlet 9 and coolant outlet 10；Cooling water platform flow channel 13
Position between the corresponding air inlet runner 6 in the back side of runner plate 101 and bypassing exhaust road 7 is arranged at, with air inlet runner 6 and exhaust
Runner 7 is parallel and quantity is identical, the two ends of every cooling water platform flow channel 13 respectively with water inlet sprue 11 and draining main flow
Road 12 is connected, as shown in Figure 7；The corresponding position of cover plate 102 and runner plate 101 sets gas access 2, gas vent 3, cooling
Water inlet 9 and coolant outlet 10, as shown in figure 8, cover plate 102 is arranged at the back side of runner plate 101.
A kind of fuel cell fluids differential flow field plate of the present invention, the sectional area of each section of the diffusion unit 8 is identical and small
The sectional area in the sectional area in air inlet runner 6 and bypassing exhaust road 7, air inlet runner 6 and bypassing exhaust road 7 is less than air inlet master
The sectional area of runner 4 and exhaust sprue 5.
A kind of fuel cell fluids differential flow field plate of the present invention, the diffuser 82 of the diffusion unit 8 is rectangular channel, groove
Width and depth bounds be 0.3mm to 1mm, the distance between adjacent diffuser 82 of same column is less than or equal to the width of groove, phase
The distance between adjacent two row diffusers 82 are less than or equal to the width of groove.
A kind of fuel cell fluids differential flow field plate of the present invention, the connection of the air inlet sprue 4 and air inlet runner 6
And the connection in exhaust sprue 5 and bypassing exhaust road 7 is overlapping mode, air inlet sprue 4 and exhaust sprue 5 are with entering qi leel
Runner 6 and bypassing exhaust road 7 are not in the same plane.
A kind of fuel cell fluids differential flow field plate of the present invention, the groove edge of the diffuser 82 is carried out at rounding
Reason.
A kind of fuel cell fluids differential flow field plate of the present invention, the groove bottom of the diffuser 82 could be arranged to arc
Face 84, as shown in Figure 9.
The material of a kind of fuel cell fluids differential flow field plate of the present invention, runner plate 101 and cover plate 102 is conduction material
Sealing is fixed by adhering and sealing material in material, the cover plate 102 and the entity part at the back side of runner plate 101.
Below by taking a kind of fuel cell fluids differential flow field plate of the invention as an example, the present invention will be described：
Gas diffusion layers sectional dimension is 20mm × 20mm fuel cell, constitutes the runner plate 101 and cover plate of pole plate 1
102 sectional dimension is designed as 30mm × 30mm, the thickness 0.7mm of cover plate 102, and the thickness of runner plate 101 is 1.8mm.Positioned at runner
The groove depth 0.5mm of the positive each diffuser 82 of plate 101, it is evenly distributed in 20mm × 20mm square shaped position.Each diffuser 82
Width be in 0.5mm, same column between adjacent diffuser 82 at intervals of 0.5mm, comprising diffuser 82 in each column diffuser 82
Number is 20；The length of diffuser 82 is 3mm, and the distance between adjacent two row diffuser 82 is 0.5mm, the row of diffuser 82
Number is 6；Diffuser 82 positioned at the square edge position can locally exceed square edge.Positioned at runner plate
The air inlet runner 6 at 101 back sides and the groove width in bypassing exhaust road 7 are 0.5mm, and groove depth is 0.8mm, and is by sectional dimension
0.5mm × 0.5mm air inlet section 81, exhaust section 83 are connected with diffuser 82；Air inlet runner 6 extends to side along its length
To air inlet sprue 4, bypassing exhaust road 7 extends to exhaust sprue 5 to opposite side along its length.Positioned at runner plate 101 just
Groove depth 1mm, the groove width 1.2mm of the air inlet sprue 4 in face and exhaust sprue 5, respectively with air inlet runner 6 and bypassing exhaust road
7 overlap joints are communicated.Gas access 2 is communicated with air inlet sprue 4 with exhaust sprue 5 respectively with gas vent 3, and diameter of section is
2mm.Each runner groove depth of cooling water flow positioned at the back side of runner plate 101 is all 0.5mm, wherein, the groove of cooling water platform flow channel 13
The groove width 2mm of wide 1mm, water inlet sprue 11 and draining sprue 12；Cooling water inlet 9 and the diameter of section of coolant outlet 10
3mm。
In the course of work, reacting gas enters air inlet sprue 4 from gas access 2, because air inlet sprue 4 is with entering qi leel
The overlap joint mode of communicating of runner 6, gas is preferentially full of whole air inlet sprue 4 so that enters each air inlet after fluid differential and shunts
The gas flow in road 6 is close；Gas into each air inlet runner 6 enters in parallel each after the fluid differential action again
Do not influenced each other between diffusion unit 8, different diffusion units 8, it is ensured that flow through the reaction gas flow in different diffusion units 8
It is close.Gas in diffusion unit 8 enters diffuser 82, portion gas incoming fuel battery at diffuser 82 through air inlet section 81
Gas diffusion layers, residual gas enters bypassing exhaust road 7 through exhaust section 83, and the gas that each bypassing exhaust road 7 is discharged is in exhaust
Sprue 5 collects, and is discharged from gas vent 3.As can be seen that such a structure design causes gas to make by fluid differential twice
With rear, gas can be more evenly distributed in whole gas diffusion layer surface, each diffuser 82 simultaneously to gas diffusion layers
Diffusion, and the consumption of the gas of each diffuser 82 will not produce influence to other diffusers 82, can fundamentally solve fuel
The problem of Cell current density skewness.
In addition, for the pole plate 1 for having water to generate, moisture mainly enters the diffuser of each diffusion unit 8 from gas diffusion layers
82, because diffuser 82 is very short, the water of generation will not be gathered, and rapid can enter exhaust section 83 from diffuser 82, through exhaust
Runner 7 and exhaust sprue 5 are ultimately drained into outlet, and for the diffuser 82 of arc, drainage effect is more preferable.Due to generation
Moisture does not flow through other diffusers 82, will not be gathered in diffuser 82, therefore do not interfere with catalytic reaction interface yet
Electrochemical reaction, improve battery performance.
Claims (7)
1. a kind of fuel cell fluids differential flow field plate, it is characterised in that：It is made up of, is set on runner plate runner plate and cover plate
There are gas flowfield and cooling water flow；The gas flowfield includes gas access, gas vent, air inlet sprue, exhaust main flow
Road, air inlet runner, bypassing exhaust road, air inlet section, diffuser and exhaust section, wherein air inlet section, diffuser and exhaust section composition
Diffusion unit；Gas access is cylindrical hole with gas vent, is each perpendicular to runner plate plane and in diagonal arrangement；Runner
The front and back of plate is provided with parallel air inlet sprue and exhaust sprue, air inlet sprue and exhaust sprue formation two
Bar groove, and respectively with gas access and gas outlet；The back side of runner plate is provided with the phase for being parallel to each other, being spaced apart
With a plurality of air inlet runner and bypassing exhaust road of quantity, a plurality of groove, air inlet runner and bypassing exhaust road and air inlet are formed
Sprue and exhaust sprue are arranged vertically, and air inlet runner is connected with air inlet sprue, bypassing exhaust road and exhaust main flow
Road is connected；Position between runner plate frontal inlet sprue and exhaust sprue is provided with parallel to air inlet sprue and exhaust
Multiple rows of multiple row diffuser of sprue, the columns of diffuser is equal to the number in air inlet runner and bypassing exhaust road, each column diffusion
The a plurality of groove that section is formed is located at corresponding air inlet runner and bypassing exhaust road between the positive projection of pole plate, and its length
Equal to the distance between corresponding air inlet runner and bypassing exhaust road；The two ends of every diffuser are respectively by perpendicular to runner
The air inlet section and exhaust section of plate plane are connected with air inlet runner and bypassing exhaust road；The cooling water flow enters including cooling water
Mouth, coolant outlet, water inlet sprue, draining sprue and cooling water platform flow channel；Cooling water inlet and coolant outlet are
Cylindrical hole, is arranged perpendicular to runner plate plane in diagonal, and cooling water inlet and coolant outlet and gas access are gentle
Compare closer to the edge of runner plate body outlet；Water inlet sprue and draining sprue are arranged at the back side of runner plate, and parallel
In air inlet sprue and exhaust sprue, and connected respectively with cooling water inlet and coolant outlet；Cooling water platform flow channel is set
Position between the corresponding air inlet runner of runner back and bypassing exhaust road is placed in, it is flat with air inlet runner and bypassing exhaust road
Go and quantity is identical, the two ends of every cooling water platform flow channel are connected with water inlet sprue and draining sprue respectively；Cover plate with
The corresponding position of runner plate sets gas access, gas vent, cooling water inlet and coolant outlet, and cover plate is arranged at runner
The back side of plate.
2. a kind of fuel cell fluids differential flow field plate according to claim 1, it is characterised in that：The diffusion unit
Each section of sectional area is identical, and is less than the sectional area in air inlet runner and bypassing exhaust road, air inlet runner and bypassing exhaust road
Sectional area be less than air inlet sprue and exhaust sprue sectional area.
3. a kind of fuel cell fluids differential flow field plate according to claim 1, it is characterised in that：The diffusion unit
Diffuser be rectangular channel, the width and depth bounds of groove are all 0.3mm to 1mm, and the distance between adjacent diffuser of same column is small
In or equal to groove width, the distance between adjacent two row diffuser is less than or equal to the width of groove.
4. a kind of fuel cell fluids differential flow field plate according to claim 1, it is characterised in that：The air inlet main flow
The connection of connection and exhaust sprue and bypassing exhaust road of the road with air inlet runner is overlapping mode, air inlet sprue and row
Gas sprue and air inlet runner and bypassing exhaust road are not in the same plane.
5. a kind of fuel cell fluids differential flow field plate according to claim 1, it is characterised in that：The diffuser
Groove edge carries out rounding processing.
6. a kind of fuel cell fluids differential flow field plate according to claim 1, it is characterised in that：The diffuser
Groove bottom could be arranged to arcwall face.
7. a kind of fuel cell fluids differential flow field plate according to claim 1, it is characterised in that：Runner plate and cover plate
Material be conductive material, sealing is fixed by adhering and sealing material in the entity part of the cover plate and runner back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720272507.1U CN206574797U (en) | 2017-03-21 | 2017-03-21 | A kind of fuel cell fluids differential flow field plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720272507.1U CN206574797U (en) | 2017-03-21 | 2017-03-21 | A kind of fuel cell fluids differential flow field plate |
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| Publication Number | Publication Date |
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| CN206574797U true CN206574797U (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720272507.1U Withdrawn - After Issue CN206574797U (en) | 2017-03-21 | 2017-03-21 | A kind of fuel cell fluids differential flow field plate |
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| Country | Link |
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| CN (1) | CN206574797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816611A (en) * | 2017-03-21 | 2017-06-09 | 北京化工大学 | A kind of fuel cell fluids differential flow field plate |
-
2017
- 2017-03-21 CN CN201720272507.1U patent/CN206574797U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816611A (en) * | 2017-03-21 | 2017-06-09 | 北京化工大学 | A kind of fuel cell fluids differential flow field plate |
| CN106816611B (en) * | 2017-03-21 | 2023-05-26 | 北京化工大学 | Fuel cell fluid differential flow field polar plate |
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