CN109671959A - A kind of fuel battery double plates ditch ridge section structure - Google Patents
A kind of fuel battery double plates ditch ridge section structure Download PDFInfo
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- CN109671959A CN109671959A CN201910069585.5A CN201910069585A CN109671959A CN 109671959 A CN109671959 A CN 109671959A CN 201910069585 A CN201910069585 A CN 201910069585A CN 109671959 A CN109671959 A CN 109671959A
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- Prior art keywords
- chase
- slot
- fuel battery
- convex ridge
- battery double
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- 239000000446 fuel Substances 0.000 title claims abstract description 57
- 230000007704 transition Effects 0.000 claims abstract description 33
- 230000001154 acute effect Effects 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 abstract description 30
- 239000012530 fluid Substances 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 26
- 239000010410 layer Substances 0.000 description 21
- 210000004027 cell Anatomy 0.000 description 20
- 238000009792 diffusion process Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000557 Nafion® Polymers 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
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
- H01M8/026—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
-
- 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 present invention provides a kind of fuel battery double plates ditch ridge section structures, belong to field of fuel cell technology, specific technical solution is as follows: the fuel battery double plates include at least one chase slot and at least one convex ridge back, share common sidewalls between the chase slot and adjacent lands back, the angle of plane and chase channel opening horizontal plane where the side wall is acute angle, and the transition face II between the transition face I between chase groove bottom and side wall and convex ridge back top surface and side wall is cambered surface；Due to the structure that chase slot is wide using opening, bottom surface is narrow, in identical runner cross-sectional area, the flow resistance of this groove structure is smaller than the flow resistance of rectangular cross-section groove, and fluid (gas and liquid) and the contact area of membrane electrode are bigger than the contact area of rectangular cross-section groove, are conducive to mass transfer of the flowing material between membrane electrode and runner；Cambered surface transition can then reduce liquid in runner delay and point effect.
Description
Technical field
The invention belongs to field of fuel cell technology more particularly to a kind of fuel battery double plates ditch ridge section structures.
Background technique
Fuel cell is a kind of clean energy resource conversion equipment that chemical energy is efficiently converted to electric energy.Proton exchange membrane combustion
Material battery also has the characteristics that low operation temperature, portable, safe as a kind of low-temperature fuel cell, can be widely applied to vapour
In the larger transport devices such as vehicle, steamer, tramcar, aircraft, it can also be used on the small devices such as unmanned plane, notebook, tool
Have broad application prospects.
Monolithic Proton Exchange Membrane Fuel Cells is by intermediate membrane electrode, and the bipolar board group that membrane electrode is clipped in the middle
At.Multiple monolithic battery stack assembly are formed into fuel cell pile together.The composition of membrane electrode from centre to both sides successively
Be using nafion film be the proton exchange membrane represented, using Pt/C catalyst as the Catalytic Layer of main material and with porous carbon paper or carbon cloth as
The gas diffusion layers of gas diffusion paths.The gas diffusion layers being made of carbon paper or carbon cloth will be direct as the outermost layer of membrane electrode
It is contacted with bipolar plates, and directly bears the compression of bipolar plates.In fuel cell pile, a surface contact membranes of bipolar plates
The cathode of electrode, another surface contact the anode of membrane electrode, are the critical materials for connecting two panels membrane electrode.
Critical material one of of the bipolar plates as fuel cell carries the electronics for collecting anode generation and passes to cathode,
Completely cut off the fuel of anode and the oxygen or air of cathode, the effect of guidance and transmission fuel, oxygen or air and steam；In addition,
A large amount of heat can be generated when operation of fuel cells on membrane electrode, these heats are also by bipolar plates collection and bipolar by flowing through
The fluid of plate takes battery out of, and battery is made to be maintained at certain temperature.Therefore, bipolar plates need to have highly conductive and thermal conductivity, good
Good gas-liquid barrier property and good gas-liquid transporting.Although thermally conductive, the conductive and barrier property of bipolar plates is mainly by its material
Material decision, but in the case where identical material, the cross section structure pair of groove and back in the flow field structure of bipolar plates and flow field
Play a significant role in thermally conductive, conductive；And for gas and liquid transmission other than the flow field structure of bipolar plates, groove in flow field
It is also played a crucial role with the cross section structure of back.Fuel gas or liquid and steam flow in the trench, groove
In fluid (gas, liquid) contacted by the opening face of groove with membrane electrode and enter gas by modes such as diffusion, convection current
Diffusion layer finally arrives Catalytic Layer and participates in reaction, and reacts the water generated and then pass through diffusion layer and enter in groove and be discharged with fluid
Battery；It is then in close contact with the carbon paper of diffusion layer at the top of the back of the convex ridge back adjacent with groove, makes to generate in anode membrane electrode
Electron transmission to cathode membrane electrode, while heat a part that membrane electrode generates is taken away by the gas in groove, a part of
It is transmitted in bipolar plates and is taken away again by gas or liquid.
The ditch ridge section structure being widely used at present is rectangle, semicircle or triangle (referring to " fuel cell " hair ancestor
It is strong etc., 2005.4 first editions 34~45, Chemical Industry Press), this ditch ridge structure has the disadvantage that (1) gas and ditch
The contact area of slot causes greatly gas flow resistance big, increases gas pressure drop；(2) channel bottom with side wall has the angle of cut to be easy stagnant
Droplet is stayed, hinders gas flowing to increase pressure drop, water logging is caused when serious；(3) angle of cut between back and side wall is wedge angle, this can draw
Playing the point effect increase internal resistance of cell makes film in addition, wedge angle can cause to damage to the diffusion layer in membrane electrode under pressure
Electrode performance decline.These shortcomings can reduce the performance of fuel cell.In patent document CN200520099368.4
Report U-shaped and semicircular shaped form section slot passage double pole plate reduces air resistance to a certain extent, improves fuel
Battery performance, but there is no solve the damage of the point effect and back of back to membrane electrode.
Summary of the invention
The purpose of the present invention is to provide a kind of fuel battery double plates ditch ridge section structure, the fuel battery double plates
It is placed between fuel cell membrane electrode cathode and anode, the loss of groove fluid pressure can be further decreased, solved simultaneously
Point effect on back and the damage problem to membrane electrode.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of fuel battery double plates ditch ridge section structure, the fuel battery double plates include at least one chase slot and at least
The horizontal plane of one convex ridge back, share common sidewalls between the chase slot and adjacent lands back, the side wall and chase channel opening it
Between angle be acute angle theta, the mistake between the top surface and side wall of transition face I between the bottom surface and side wall of chase slot and convex ridge back
Crossing face II is cambered surface.
Further, the range of the acute angle theta is 30 ° ~ 89 °.
Further, the chase slot is gradually reduced along the direction opening width of recess, and the convex ridge back (2) is along protrusion
Direction width is gradually reduced.
Further, each chase slot and each convex ridge back are both with respect to the symmetrical knot of respective center line
Structure.
Further, the bottom surface of the chase slot and the top surface of convex ridge back are horizontal plane.
Further, the bottom surface of the chase slot is the curved surface I deep along the direction of recess, the curvature half of the curved surface I
Diameter range is 10.0 ~ 100.0 mm.
Further, the top surface of the convex ridge back is the curved surface II along the direction of protrusion protrusion, the curvature of the curved surface II
Radius is 10.0 ~ 100.0 mm.
Further, the range of curvature radius of the transition face I and transition face II is 0.1 ~ 10.0 mm.
Further, when the quantity of the chase slot is greater than 1, all chase slots are provided with the same of bipolar plates
On a surface.
Further, the bottom surface of the convex ridge back also offers chase slot.
Further, the opening face width range of the chase slot is 0.3 ~ 10.0 mm, the width of the top surface of the convex ridge back
Degree range is 0.1 ~ 8.0 mm.
Fuel battery double plates provided by the invention are relative to conventional rectangle groove and back cross section structure bipolar plates tool
It has the advantage that
1) back top surface and side wall arc-shaped transition, back is few to the point stresses of gas diffusion layers, the damage to gas diffusion layers
It is small, improve fuel cell service life；
2) back top surface keeps the point effect of back top surface small with side wall arc-shaped transition, and the contact area with gas diffusion layers
Greatly, the conductivity of bipolar plates is improved；
3) chase slot is small with gas-contact area, and resistance is small, and pressure loss is small；
4) the narrow bottom surface of chase slot and side wall arc-shaped transition reduce the delay for generating water；
5) opening of chase groove width, the contact area for improving gas and gas diffusion layers is big, the object of fluid and gas diffusion interlayer
Matter efficiency of transmission is high.
Detailed description of the invention
Fig. 1 is the summary sectional view according to the cross sectional shape of the chase slot and convex ridge of bipolar plates in embodiment 1 back；
Fig. 2 is the summary sectional view according to the cross sectional shape of the chase slot and convex ridge of bipolar plates in embodiment 2 back；
Fig. 3 is the summary sectional view according to the cross sectional shape of the chase slot and convex ridge of bipolar plates in embodiment 3 back；
Fig. 4 is the summary sectional view according to the cross sectional shape of the chase slot and convex ridge of bipolar plates in embodiment 4 back；
Fig. 5 is the summary sectional view according to the cross sectional shape of the chase slot and convex ridge of bipolar plates in embodiment 5 back；
Fig. 6 is the summary sectional view according to the cross sectional shape of the chase slot and convex ridge of bipolar plates in embodiment 6 back；
Fig. 7 is the summary sectional view according to the cross sectional shape of the chase slot and convex ridge of bipolar plates in comparative example 1 back；
In figure: 1, chase slot, 11, side wall, 12, the bottom surface of transition face I, 13, chase slot, 14, the opening face of chase slot, 2, convex ridge
Back, 22, transition face II, 23, convex ridge back top surface, r1, I radius of curvature of transition face；r2, II radius of curvature of transition face；r3, curved surface I
Radius of curvature；r4, II radius of curvature of curved surface；a1, chase slot opening face width；a2, convex ridge back top surface width；θ, acute angle.
Specific embodiment
Specific embodiment 1:
A kind of fuel battery double plates ditch ridge section structure, the fuel battery double plates are placed on the cathode and sun of fuel cell
Between pole, there are at least one chase slot 1 and at least one convex ridge back 2, share common sidewalls between chase slot 1 and adjacent lands back 2
11, the angle between horizontal plane that the side wall 11 and chase slot 1 are open is acute angle theta, the bottom surface 13 of chase slot and side wall 11 it
Between transition face I 12 and convex ridge back top surface 23 and side wall 11 between transition face II 22 be cambered surface.
Further, the range of the acute angle theta is 30 ° ~ 89 °.
Further, for the chase slot 1 relative to bipolar plate surfaces to lower recess, the direction that is recessed is the depth of chase slot 1
Spend direction；Convex ridge back 2 raises upward relative to 1 bottom plane of chase slot, and protrusion direction is the short transverse of convex ridge back 2；Term
" bipolar plate surfaces " refer in face of membrane electrode and the surface that contacts with membrane electrode, i.e. the top surface 23 of convex ridge back and chase slot is opened
Mouth face 14 is formed by plane.There is narrow portion and width portion in the chase slot 1 and convex ridge back 2, be at the opening face 14 of chase slot
It wide portion and is gradually reduced along the direction opening width of recess, the bottom surface 13 of chase slot is narrow portion；Convex ridge back 2 is then on the contrary, i.e. convex
The bottom of back 2 is width portion and is gradually reduced along height of projection direction width that the top surface 23 of convex ridge back is narrow portion.The chase
1 opening direction of slot and convex ridge carry on the back 2 protrusion directions in face of simultaneously Contact cathod or anode gas diffusion layer, and fluid is in the chase slot 1
Interior flowing, the electronics in membrane electrode is collected by convex ridge back 2 and conduction.
Further, each chase slot 1 and each convex ridge back 2 are both with respect to the symmetrical knot of respective center line
Structure.
Further, the bottom surface 13 of the chase slot and the top surface 23 of convex ridge back are horizontal plane.
Further, the width range at the opening face 14 of the chase slot is 0.3 ~ 10.0 mm, the top of the convex ridge back
23 width range of face is 0.1 ~ 8.0 mm.
Further, the bottom surface 13 of the chase slot is the curved surface I deep along depth direction, the radius of curvature r of the curved surface I3
Range is 10.0 ~ 100.0 mm.
Further, the top surface 23 of the convex ridge back is the curved surface II protruded along short transverse, the curvature of the curved surface II
Radius r4Range is 10.0 ~ 100.0 mm.
Further, the radius of curvature r of the transition face I 12 and transition face II 221、r2Range be 0.1 ~ 10.0
The radius of curvature r of mm, transition face I 12 and transition face II 221And r2It can be the same or different.
Further, when the quantity of the chase slot 1 is greater than 1, all chase slots 1 are provided with the same of bipolar plates
On one surface.
Further, the bottom surface of the convex ridge back 2 also offers chase slot 1.
Since convex ridge back 2 and side wall 11 use cambered surface transition, bipolar plates answer the tip of diffusion layer when fuel cell assembles
Power is obviously reduced, and reduces bipolar plates to the damage of diffusion layer to improve fuel battery service life；The convex ridge back 2 and side wall 11
The point effect that transition face II 22 also can be reduced reduces enrichment of the electronics at convex ridge back 2 with 11 angle of cut of side wall to improve conductance
Rate.Since chase slot 1 is narrowed along recess direction, in identical opening width, i.e. gas and the identical feelings of diffusing layer interfaces product
Under condition, the perimeter in 1 section of chase slot is smaller than rectangle, that is to say, that and the contact area of gas and bipolar plates reduces in groove,
It is smaller than rectangular section runner that this makes gas flow resistance, to reduce the pressure loss of gas, reduces the dense of fuel cell
Degree loss；When with identical chase slot cross-section area, the chase slot 1 is with diffusing layer interfaces product than rectangular section chase slot
Contact area it is big, the efficiency that gas is spread to diffusion layer can be improved, to improve fuel battery performance；The bottom surface of chase slot
13 with side wall 11 be cambered surface transition, without the angle of cut, it is possible to reduce the delay of water in fuel cell, thus reduce pressure loss and
The possibility of water logging.
The sectional view of institute's reference is the cross section structure of bipolar plates in following specific embodiments, and the cross section structure refers to
It is orthogonal to the shape in the section of fluid flow direction.
Embodiment 1
The summary sectional view of the cross sectional shape of the chase slot of shown fuel battery double plates and convex ridge back referring to Fig.1, the fuel
Cell bipolar plate includes at least one chase slot 1 and at least one convex ridge back 2, share common sidewalls between chase slot 1 and convex ridge back 2
11, the transition between transition face I 12 between side wall 11 and the bottom surface 13 of chase slot and the top surface 23 and side wall 11 of convex ridge back
Face II 22 is cambered surface, and the radius of curvature of transition face I 12 and transition face II 22 is respectively r1And r2, value can it is identical can also be with
Difference, r1And r2Value range be 0.1 ~ 10.0 mm, preferably 0.3 ~ 8.0 mm, more preferably 0.5 ~ 5.0 mm.It is described recessed
Relative to bipolar plate surfaces to lower recess, convex ridge back 2 raises upward groove 1 relative to the bottom surface 13 of chase slot.Term " bipolar plates
Surface " refers in face of membrane electrode and the surface that contacts with membrane electrode, i.e. the opening face 14 of the top surface 23 of convex ridge back and chase slot
It is formed by face.14 direction of chase channel opening face and the top surface 23 of convex ridge back are in face of simultaneously Contact cathod or anodic gas diffusion
Layer, fluid flow in the chase slot 1, and the electronics in membrane electrode is collected by convex ridge back 2 and conduction.
There is narrow portion and width portion in chase slot 1 and convex ridge back 2, the wide portion of chase slot 1 for the opening face 14 of chase slot at,
Width is a1, the wide portion of chase slot 1 is gradually reduced along recess direction width, forms the narrow portion of chase slot 1, the i.e. bottom of chase slot
Face 13；Convex ridge back 2 is then on the contrary, the top surface 23 of i.e. convex ridge back is narrow portion, width a2, the narrow portion of convex ridge back 2 is along protrusion
Opposite direction width is gradually increased.Since chase slot 1 and convex ridge back 2 have narrow portion and width portion, open side wall 11 with chase slot
There are acute angle thetas in mouth face 14, in the range of 30 ° ~ 89 °, preferably 40 ° ~ 80 °, more preferable 45 ° ~ 75 °.
Embodiment 2
Referring to the summary sectional view for the cross sectional shape that the chase slot and convex ridge of bipolar plates shown in Fig. 2 are carried on the back, by fuel in embodiment 1
The bottom of the convex ridge back 2 of cell bipolar plate is provided with chase slot identical with chase slot 1, and the two sides of bipolar plates is made to open identical chase
Slot, and 2 overlapping of chase slot 1 and convex ridge back, are separated between each chase slot 1 and corresponding convex ridge back 2 by plate, other knots
Structure is same as Example 1.
Embodiment 3
The summary sectional view of the cross sectional shape of chase slot and the convex ridge back of bipolar plates shown in Fig. 3, referring to the fuel electricity of embodiment 1
Pond bipolar plates, it is r that the bottom surface 13 of the chase slot of fuel battery double plates in embodiment 1, which is changed to radius of curvature by plane,3Song
Face I, r3Value range be 10.0 ~ 100.0 mm, preferably 20.0 ~ 80.0 mm more select 30.0 ~ 50.0 mm；Other structures
It is same as Example 1.
Embodiment 4
The summary sectional view of the cross sectional shape of chase slot and the convex ridge back of bipolar plates shown in Fig. 4, referring to the fuel electricity of embodiment 1
Pond bipolar plates, it is r that the top surface 23 of the convex ridge back of fuel battery double plates in embodiment 1, which is changed to radius of curvature by plane,4Song
Face II, r4Value range be 10.0 ~ 100.0 mm, preferably 20.0 ~ 80.0 mm more select 30.0 ~ 50.0 mm；Other structures
It is same as Example 1.
Embodiment 5
The summary sectional view of the cross sectional shape of chase slot and the convex ridge back of bipolar plates shown in fig. 5, referring to the fuel electricity of embodiment 1
Pond bipolar plates, it is r that the bottom surface 13 of the chase slot of fuel battery double plates in embodiment 1, which is changed to radius of curvature by plane,3Song
Face I, r3Value range be 10.0 ~ 100.0 mm, preferably 20.0 ~ 80.0 mm more select 30.0 ~ 50.0 mm；By embodiment
It is r that the top surface 23 of the convex ridge back of bipolar plates, which is changed to radius of curvature by plane, in 14Curved surface II, r4Value range be 10.0 ~
100.0 mm, preferably 20.0 ~ 80.0 mm, more select 30.0 ~ 50.0 mm；r3And r4It can be the same or different, other knots
Structure is same as Example 1.
Embodiment 6
The summary sectional view of the cross sectional shape of chase slot and the convex ridge back of bipolar plates shown in fig. 6, by fuel cell in embodiment 5
Chase slot identical with chase slot 1 is opened in the bottom surface of the convex ridge back 2 of bipolar plates, and the two sides of bipolar plates is made to open chase slot and chase slot 1
It is overlapped with convex ridge back 2, is separated among the two by plate.Other structures are same as Example 5.
Comparative example 1
The summary sectional view of the cross sectional shape of chase slot and the convex ridge back of bipolar plates shown in Fig. 7, the bipolar plates include at least one
A chase slot 1 and convex ridge back 2, share common sidewalls 11 between chase slot and convex ridge back, side wall 11 perpendicular to bipolar plate surfaces, and
Side wall and bottom surface or top surface are without cambered surface transition.14 direction of opening face of the chase slot and convex ridge back top surface 23 face and contact yin
Pole or anode gas diffusion layer, fluid flow in the chase slot 1, and the electronics in membrane electrode is collected by convex ridge back 2
And conduction.
Test case 1
According to the bipolar plates cross sectional shape in above embodiments, different chase slots 1 and convex ridge have been designed and produced using serpentine flow
Carry on the back the bipolar plates of 2 cross sectional shapes.Bipolar plates are assembled into multiple fuel cell piles test a period of time under the same conditions
The impression situation in battery observation bipolar plates in water residual condition and membrane electrode is dismantled afterwards.Bipolar plates section design parameter and test
As a result see Table 1 for details.
1 bipolar plates section design parameter of table and test result
Folder when can be seen that from the result in table 1 using embodiment 1 ~ 4, between side wall 11 and the horizontal plane of the opening of chase slot 1
Angle acute angle theta angle is less than 75 ° and the radius of curvature r of transition face I1Anhydrous residual in chase slot 1, transition face II when greater than 0.2 mm
Radius of curvature r2Convex ridge back 2 will not cause crushing to hurt membrane electrode when greater than 0.2 mm；For embodiment 5 and 6 due to chase
The bottom surface 13 of slot and the top surface 23 of convex ridge back use arcwall face, and radius of curvature occurs minor amount of water residual in 10.0 mm, but right
Membrane electrode is without impression.Compared with comparative example, embodiment can achieve the purpose of the present invention.
Claims (11)
1. a kind of fuel battery double plates ditch ridge section structure, it is characterised in that: the fuel battery double plates include at least one
A chase slot (1) and at least one convex ridge back (2), share common sidewalls (11) between the chase slot (1) and adjacent lands back (2),
Angle between the side wall (11) and the horizontal plane of chase slot (1) opening is acute angle theta, the bottom surface (13) of chase slot and side wall
(11) transition face I (12) between and the transition face II (22) between the top surface (23) and side wall (11) of convex ridge back are arc
Face.
2. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: the acute angle
The range of θ is 30 ° ~ 89 °.
3. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: the chase slot
(1) the direction opening width along recess is gradually reduced, and the convex ridge back (2) is gradually reduced along the direction width of protrusion.
4. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: described each recessed
Groove (1) and each convex ridge back (2) are both with respect to the symmetrical structure of respective center line.
5. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: the chase
The bottom surface (13) of slot and the top surface (23) of convex ridge back are horizontal plane.
6. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: the chase slot
Bottom surface (13) be the deep curved surface I in direction along recess, the range of curvature radius of the curved surface I is 10.0 ~ 100.0 mm.
7. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: the convex ridge back
Top surface (23) be curved surface II along the direction of protrusion protrusion, the range of curvature radius of the curved surface II is 10.0 ~ 100.0 mm.
8. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: the chase slot
(1) opening face (14) width range is 0.3 ~ 10.0 mm, and the width range of the top surface (23) of the convex ridge back is 0.1 ~ 8.0
mm。
9. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: when the chase
When the quantity of slot (1) is greater than 1, all chase slots (1) are provided on the same surface of bipolar plates.
10. a kind of fuel battery double plates ditch ridge section structure according to claim 1, it is characterised in that: the convex ridge
The bottom surface of back (2) also offers chase slot (1).
11. a kind of fuel battery double plates ditch ridge section structure, feature described in any claim according to claim 1 ~ 10
Be: the range of curvature radius of the transition face I (12) and transition face II (22) is 0.1 ~ 10.0 mm.
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| CN201910069585.5A CN109671959A (en) | 2019-01-24 | 2019-01-24 | A kind of fuel battery double plates ditch ridge section structure |
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| CN201910069585.5A CN109671959A (en) | 2019-01-24 | 2019-01-24 | A kind of fuel battery double plates ditch ridge section structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289432A (en) * | 2019-07-20 | 2019-09-27 | 湖南理工学院 | A kind of fuel battery double plates three-dimensional flow field |
| CN111477906A (en) * | 2020-05-26 | 2020-07-31 | 上海交通大学 | Air-permeable bipolar plate suitable for fuel cell stack and fuel cell stack |
| CN111540922A (en) * | 2020-05-07 | 2020-08-14 | 擎能动力科技(苏州)有限公司 | Negative plate, bipolar plate and fuel cell with protrusions and depressions |
| CN111952621A (en) * | 2020-07-21 | 2020-11-17 | 东风汽车集团有限公司 | Fuel cell stack and fuel cell vehicle |
| CN113540490A (en) * | 2021-06-22 | 2021-10-22 | 一汽解放汽车有限公司 | Fuel cell electrode plate, fuel cell monomer and fuel cell |
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| CN110289432A (en) * | 2019-07-20 | 2019-09-27 | 湖南理工学院 | A kind of fuel battery double plates three-dimensional flow field |
| CN111540922A (en) * | 2020-05-07 | 2020-08-14 | 擎能动力科技(苏州)有限公司 | Negative plate, bipolar plate and fuel cell with protrusions and depressions |
| CN111477906A (en) * | 2020-05-26 | 2020-07-31 | 上海交通大学 | Air-permeable bipolar plate suitable for fuel cell stack and fuel cell stack |
| CN111952621A (en) * | 2020-07-21 | 2020-11-17 | 东风汽车集团有限公司 | Fuel cell stack and fuel cell vehicle |
| CN113540490A (en) * | 2021-06-22 | 2021-10-22 | 一汽解放汽车有限公司 | Fuel cell electrode plate, fuel cell monomer and fuel cell |
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