CN205583041U - Fuel cell stack of fluid distribution pipeline cross section gradual change - Google Patents
Fuel cell stack of fluid distribution pipeline cross section gradual change Download PDFInfo
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- CN205583041U CN205583041U CN201620254615.1U CN201620254615U CN205583041U CN 205583041 U CN205583041 U CN 205583041U CN 201620254615 U CN201620254615 U CN 201620254615U CN 205583041 U CN205583041 U CN 205583041U
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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 relates to a fuel cell stack of fluid distribution pipeline cross section gradual change, by range upon range of the forming of polylith monocell (1), this fuel cell stack is regional including the fluid distribution who is located central conversion zone of fuel cell stack and conversion zone both sides, all be equipped with the fluid distribution pipeline in the fluid distribution region of both sides, conversion zone cross section on each monocell (1) is the same, the regional cross section successive layer gradual change of both sides fluid distribution, correspondingly, the fluid distribution pipeline cross section successive layer gradual change that corresponds is gone up in each monocell (1), and then the regional vertical section of the fluid distribution who makes fuel cell stack is trapezoidal form or falls trapezoidal form, fluid distribution pipeline vertical section in each fluid distribution region of while fuel cell stack is the trapezoidal form of assorted or the trapezoidal form that falls with it. Compared with the prior art, the utility model has the advantages of simple structure, fuel cell stack weight loss, material saving, reduce cost, carry high power density.
Description
Technical field
This utility model relates to a kind of fuel cell pack, especially relates to a kind of fluid distribution pipe cross section gradual change
Fuel cell pack.
Background technology
Fuel cell is the electrochemical generating unit of a kind of clean environment firendly, and its major advantage is: energy conversion efficiency
Height, 50%～70%；Environmental protection, cleanliness without any pollution, product only has aqueous water；Power generation stabilization is reliable.
Therefore, it is one of preferable energy adapting to future source of energy and environmental requirement.
In the last few years, fuel cell always was some full-sized car companies and the study hotspot of research institution.Respectively
In the fuel cell of type, Proton Exchange Membrane Fuel Cells (PEMFC) is widely used in various vehicle startup
Machine, stand-by power supply and communication base station etc..But, the output voltage of PEM list fuel cell is relatively low
(0.5～1.0V/ monocell), often gets up multipair cells in series in reality application, constitutes fuel cell pack.
In the running of battery pile, the outside batteries supply fuel of fuel cell pack, oxidant and coolant etc. are all
To be distributed in every a pair monocell by respective fluid distribution pipe.Fuel, oxidant and refrigerant distribution
Obtain and the most whether will directly influence the runnability of battery pile, for the problem of even fluid distribution, Ke Yitong
Cross the pressure drop that fluid flows in the duct to calculate and learn: in each monocell, flow subtracts along with the increase of monocell quantity
Little, the distribution of fluid is the trend of tapering off.Existing fuel cell pack is carried out by the on all four monocell of size
Stacking is connected, and the cross-sectional area of the fluid distribution pipe of each monocell is all identical, in this case can make
Becoming certain waste, the power density of battery pile is less simultaneously.
Utility model content
Defect that the purpose of this utility model is contemplated to overcome above-mentioned prior art to exist and provide a kind of fluid to divide
The fuel cell pack of distribution pipes cross section gradual change.
The purpose of this utility model can be achieved through the following technical solutions:
The fuel cell pack of a kind of fluid distribution pipe cross section gradual change, is laminated by polylith monocell, this fuel
Battery pile includes being positioned at conversion zone and the flow distribution zone of conversion zone both sides of fuel cell pack central authorities, and two
Side liquid distribution is equipped with fluid distribution pipe in region, and the conversion zone cross section on each monocell is identical, both sides
The successively gradual change of flow distribution zone cross section, correspondingly, fluid distribution pipe cross section corresponding on each monocell by
Layer gradual change, and then make the trapezoidal shape in flow distribution zone vertical section or inverted trapezoidal shape, the fuel simultaneously of fuel cell pack
Fluid distribution pipe vertical section in each flow distribution zone of battery pile is matched trapezoidal shape or the ladder that falls
Shape.
Both sides flow distribution zone cross section successively gradual manner on each monocell is as follows:
On each monocell, the width of both sides flow distribution zone all keeps constant, and equal to the width of conversion zone, respectively
On monocell, the length of both sides flow distribution zone is all successively successively decreased by being sized；
Correspondingly, the length of corresponding in the flow distribution zone of both sides on each monocell fluid distribution pipe cross section is equal
Successively successively decrease by identical being sized.
Both sides flow distribution zone cross section successively gradual manner on each monocell is as follows:
On each monocell, the width of both sides flow distribution zone all keeps constant, and equal to the width of conversion zone, respectively
On monocell, the length of side flow distribution zone is successively successively decreased by being sized, the length of opposite side flow distribution zone
Spend and be successively incremented by by identical being sized, and on every piece of monocell, the length sum of both sides flow distribution zone is equal；
Correspondingly, the length in each monocell upper fluid distribution region successively successively decrease side flow distribution zone in corresponding
The length of fluid distribution pipe cross section all successively successively decrease by same settings size, the length of flow distribution zone by
The length of fluid distribution pipe cross section corresponding in the flow distribution zone of the incremental side of layer is all by same settings chi
Very little successively it is incremented by.
Described is sized as 1mm～10mm.
It is equipped with 3 fluid distribution pipes in the both sides flow distribution zone of fuel cell pack, connects fuel electricity respectively
The fuel inlet pipe of Chi Dui, fuel delivery pipe road, oxidant input channel, oxidizer discharge pipeline, coolant
Input channel and coolant output channel.
This battery pile also includes two pieces of current-collecting panels and the securing member for self-contained battery heap, and described current-collecting panel divides
It is not arranged on the bottom of fuel cell pack and top layer and is fixed by securing member.
Described securing member is steel band or turnbuckle.
Compared with prior art, this utility model has the advantage that
(1) in this utility model, in fuel cell pack, each monocell conversion zone cross section is the most identical, and fluid divides
Joining zone cross-sectional according to setting means successively gradual change so that the volume of battery pile reduces, material usage reduces, electricity
Pond heap weight saving, thus saved cost, it is effectively increased the power density of battery pile；
(2) in this utility model the fluid distribution pipe cross section variation pattern in each layer of monocell according to its institute
Variation pattern in flow distribution zone is changed, thus realizes gradual change so that fluid divides in every layer of monocell
Cloth is uniform, improves the runnability of battery pile.
Accompanying drawing explanation
Fig. 1 is the structural representation of the fuel cell pack of this utility model embodiment 1 and embodiment 2；
Fig. 2 be this utility model embodiment 1 fuel cell pack in bipolar plate structure schematic diagram；
Fig. 3 be this utility model embodiment 1 fuel cell pack in electrode structure schematic diagram；
Fig. 4 is the vertical section schematic diagram of the fuel cell pack of this utility model embodiment 1 and embodiment 2；
Fig. 5 be this utility model embodiment 2 fuel cell pack in bipolar plate structure schematic diagram；
Fig. 6 be this utility model embodiment 2 fuel cell pack in electrode structure schematic diagram；
Fig. 7 is the structural representation of the fuel cell pack of this utility model embodiment 3 and embodiment 4；
Fig. 8 be this utility model embodiment 3 fuel cell pack in bipolar plate structure schematic diagram；
Fig. 9 be this utility model embodiment 3 fuel cell pack in electrode structure schematic diagram；
Figure 10 is the vertical section schematic diagram of the fuel cell pack of this utility model embodiment 3 and embodiment 4；
Figure 11 be this utility model embodiment 4 fuel cell pack in bipolar plate structure schematic diagram；
Figure 12 be this utility model embodiment 4 fuel cell pack in electrode structure schematic diagram.
In figure, 1 is monocell, and 2 is current-collecting panel, and 3 is inlet and outlet piping, and 4 is securing member；P11 is embodiment
The bipolar plates of first piece of monocell of 1 fuel cell pack, P1n is last block list of embodiment 1 fuel cell pack
The bipolar plates of battery, E11 is first mated with the bipolar plates of first piece of monocell in embodiment 1 fuel cell pack
Block single-cell electrodes, E1n is that in embodiment 1 fuel cell pack, bipolar plates with last block monocell is mated
Rear one piece of single-cell electrodes, Q11 is the comfort zone of first piece of single-cell electrodes of embodiment 1 fuel cell pack
Territory, Q1n is the effecting reaction region of last block single-cell electrodes of embodiment 1 fuel cell pack；P21 is real
Executing the bipolar plates of first piece of monocell of example 2 fuel cell pack, P2n is last of embodiment 2 fuel cell pack
The bipolar plates of block monocell, E21 is that in embodiment 2 fuel cell pack, bipolar plates with first piece of monocell is mated
First piece of single-cell electrodes, E2n is that in embodiment 2 fuel cell pack, bipolar plates with last block monocell is mated
Last block single-cell electrodes, Q21 is the effectively anti-of first piece of single-cell electrodes of embodiment 2 fuel cell pack
Answering region, Q2n is the effecting reaction region of last block single-cell electrodes of embodiment 2 fuel cell pack；P31
For the bipolar plates of first piece of monocell of embodiment 3 fuel cell pack, P3n be embodiment 3 fuel cell pack
The bipolar plates of rear one piece of monocell, E31 is the bipolar plates in embodiment 3 fuel cell pack with first piece of monocell
The first piece of single-cell electrodes joined, E3n is the bipolar plates in embodiment 3 fuel cell pack with last block monocell
Last block single-cell electrodes of coupling, Q31 is having of first piece of single-cell electrodes of embodiment 3 fuel cell pack
Validity response region, Q3n is the effecting reaction region of last block single-cell electrodes of embodiment 3 fuel cell pack；
P41 is the bipolar plates of first piece of monocell of embodiment 4 fuel cell pack, and P4n is embodiment 4 fuel cell pack
The bipolar plates of last block monocell, E41 is bipolar with first piece of monocell in embodiment 4 fuel cell pack
First piece of single-cell electrodes of plate coupling, E4n is double with last block monocell in embodiment 4 fuel cell pack
Last block single-cell electrodes of pole plate coupling, Q41 is first piece of single-cell electrodes of embodiment 4 fuel cell pack
Effecting reaction region, Q4n is the comfort zone of last block single-cell electrodes of embodiment 4 fuel cell pack
Territory.
Detailed description of the invention
With specific embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment 1
As it is shown in figure 1, the fuel cell pack of a kind of fluid distribution pipe cross section gradual change, by polylith monocell 1
Being laminated, each monocell 1 is superimposed with three-in-one membrane electrode assembly by bipolar plates and forms.This battery pile is also wrapped
Including two pieces of current-collecting panels 2 and the securing member 4 for self-contained battery heap, current-collecting panel 2 is separately positioned on fuel cell
The bottom of heap and top layer are also fixed by securing member 4, and securing member 4 is steel band or turnbuckle.This fuel cell pack
Including the conversion zone and the flow distribution zone of conversion zone both sides, two side liquids that are positioned at fuel cell pack central authorities
Distribution is equipped with fluid distribution pipe in region, and the conversion zone cross section on each monocell 1 is identical, two side liquids
Distribution zone cross-sectional successively gradual change, correspondingly, fluid distribution pipe cross section corresponding on each monocell 1 is successively
Gradual change, and then make the trapezoidal shape in flow distribution zone vertical section or the inverted trapezoidal shape of fuel cell pack, fuel electricity simultaneously
Fluid distribution pipe vertical section in each flow distribution zone of Chi Dui is matched trapezoidal shape or inverted trapezoidal
Shape.It is equipped with 3 fluid distribution pipes in the both sides flow distribution zone of fuel cell pack, connects fuel electricity respectively
The fuel inlet pipe of Chi Dui, fuel delivery pipe road, oxidant input channel, oxidizer discharge pipeline, coolant
Input channel and coolant output channel, be collectively expressed as inlet and outlet piping 3 in Fig. 1.
Both sides flow distribution zone cross section successively gradual manner on each monocell 1 is as follows: on each monocell 1 two
The width in side liquid distribution region all keeps constant, and equal to the width of conversion zone, two effluents on each monocell 1
The length in body distribution region is all successively successively decreased by being sized；Correspondingly, two side liquid distribution district on each monocell 1
The length of fluid distribution pipe cross section corresponding in territory is all successively successively decreased by identical being sized.Above-mentioned change
Being sized as 1mm～10mm in mode.In this embodiment on each monocell 1 in the flow distribution zone of both sides
Corresponding fluid distribution pipe cross section is rectangular, and above-mentioned is sized as 2mm.
Specifically, in this embodiment, fuel cell pack uses 12 pieces of monocells 1 to be laminated, and is illustrated in figure 2
The structural representation of bipolar plates in this embodiment, in figure, L1 is first piece of bipolar plates of the present embodiment fuel cell pack
Length, L2 is the width of first piece of bipolar plates of the present embodiment fuel cell pack, L3 be the present embodiment fuel electricity
The length of both sides flow distribution zone in first piece of bipolar plates of Chi Dui, L4 is the of the present embodiment fuel cell pack
The length of fluid distribution pipe cross section in the flow distribution zone of both sides in one piece of bipolar plates.Concrete first piece is double
The a length of Amm of pole plate, width is Bmm, and in first piece of bipolar plates, the length of both sides flow distribution zone is
Dmm, a length of Cmm of fluid distribution pipe cross section in the flow distribution zone of both sides in first piece of bipolar plates；
Being changed in the manner described above, the length in second piece of bipolar plates upper fluid distribution region all reduces 2mm, simultaneously
The length of the fluid distribution pipe cross section being correspondingly arranged in bipolar plates also reduces 2mm, it can be seen that, second piece
In bipolar plates, the length of both sides flow distribution zone is (D-2) mm, a length of (A-4) of second piece of bipolar plates
Mm, a length of (C-2) mm of fluid distribution pipe cross section；The rest may be inferred, and last block bipolar plates is (i.e.
12nd piece of bipolar plates in the present embodiment) length of upper both sides flow distribution zone is (D-22) mm, finally
A length of (A-44) mm of one piece of bipolar plates (i.e. the 12nd piece of bipolar plates in the present embodiment), correspondingly this pair
A length of (C-22) mm of fluid distribution pipe cross section in the flow distribution zone of both sides on pole plate.
Being illustrated in figure 3 the structural representation of electrode in this embodiment, the electrode in every piece of monocell 1 is double with above-mentioned
Pole plate is all Aided design, and the change in size of 12 cube electrodes is consistent with the variation pattern of above-mentioned bipolar plates, simultaneously
Each cube electrode effecting reaction region cross section in fuel cell pack is identical, i.e. in figure first piece of fuel cell pack
The effecting reaction region Q11 of electrode is until the effecting reaction region Q1n of last cube electrode of fuel cell pack is equal
Identical.
It is illustrated in figure 4 the vertical section schematic diagram of the fuel cell pack of this embodiment, as can be seen from the figure due to respectively
On monocell 1, the length of both sides flow distribution zone is all successively successively decreased by being sized, so that fuel cell pack
The trapezoidal shape in flow distribution zone vertical section, both sides, and two of flow distribution zone vertical section, both sides trapezoidal be in mirror
As symmetrical.Correspondingly, corresponding in each monocell 1 upper fluid distribution region fluid distribution pipe cross section
Length is all successively successively decreased by same settings size so that the fluid distribution pipe vertical section in each flow distribution zone in
The trapezoidal shape matched with flow distribution zone vertical section.
Existing fuel cell pack carries out stacking series connection, and each monocell by the on all four monocell of size 1
Fluid distribution pipe cross-sectional area on 1 is all identical, by fuel cell pack and the existing fuel of this embodiment
Battery pile is compared, and the fuel cell pack weight of this embodiment has alleviated, and has on the one hand saved material, has saved one-tenth
This, be on the other hand effectively increased the power density of fuel cell pack.
Embodiment 2
As it is shown in figure 1, fuel cell pack profile is same as in Example 1 in this embodiment, difference is this fuel
Fluid distribution pipe cross section corresponding in the flow distribution zone of both sides on each monocell 1 in battery pile is kidney-shaped, its
Yu Jun is same as in Example 1.
Being illustrated in figure 5 the structural representation of bipolar plates in this embodiment, in figure, L1 is the present embodiment fuel cell
The length of first piece of bipolar plates of heap, L2 is the width of first piece of bipolar plates of the present embodiment fuel cell pack, L3
For the length of both sides flow distribution zone in first piece of bipolar plates of the present embodiment fuel cell pack, L4 is this enforcement
Fluid distribution pipe cross-section lengths in the flow distribution zone of both sides in first piece of bipolar plates of example fuel cell pack,
Here fluid distribution pipe cross-section lengths is the length in kidney-shaped cross section.Specifically, the bipolar plates of each monocell 1
Size and the size of fluid distribution pipe cross section the most same as in Example 1.
Being illustrated in figure 6 the structural representation of electrode in this embodiment, the electrode in every piece of monocell 1 is double with above-mentioned
Pole plate is all Aided design, and the change in size of 12 cube electrodes is consistent with the variation pattern of above-mentioned bipolar plates, simultaneously
In fuel cell pack, each cube electrode effecting reaction area size is identical, i.e. first block of electricity of fuel cell pack in figure
The effecting reaction region Q21 of pole is until the effecting reaction region Q2n of last cube electrode of fuel cell pack is the completeest
Exactly the same, electrode effecting reaction area size and the electrode effecting reaction region in embodiment 1 in this embodiment simultaneously
Size is the most identical.
In this embodiment, the vertical section of fuel cell pack is identical, such as Fig. 4 with the vertical section of embodiment 1 fuel cell pack
Shown in, the most same as in Example 1, the fuel cell pack weight of this embodiment has alleviated, and on the one hand saves
Material, has saved cost, is on the other hand effectively increased the power density of fuel cell pack.
Embodiment 3
As it is shown in fig. 7, the fuel cell pack of a kind of fluid distribution pipe cross section gradual change, by polylith monocell 1
Being laminated, each monocell 1 is superimposed with three-in-one membrane electrode assembly by bipolar plates and forms.This battery pile is also wrapped
Including two pieces of current-collecting panels 2 and the securing member 4 for self-contained battery heap, current-collecting panel 2 is separately positioned on fuel cell
The bottom of heap and top layer are also fixed by securing member 4, and securing member 4 is steel band or turnbuckle.This fuel cell pack
Including the conversion zone and the flow distribution zone of conversion zone both sides, two side liquids that are positioned at fuel cell pack central authorities
Distribution is equipped with fluid distribution pipe in region, and the conversion zone cross section on each monocell 1 is identical, two side liquids
Distribution zone cross-sectional successively gradual change, correspondingly, fluid distribution pipe cross section corresponding on each monocell 1 is successively
Gradual change, and then make the trapezoidal shape in flow distribution zone vertical section or the inverted trapezoidal shape of fuel cell pack, fuel electricity simultaneously
Fluid distribution pipe vertical section in each flow distribution zone of Chi Dui is matched trapezoidal shape or inverted trapezoidal
Shape.It is equipped with 3 fluid distribution pipes in the both sides flow distribution zone of fuel cell pack, connects fuel electricity respectively
The fuel inlet pipe of Chi Dui, fuel delivery pipe road, oxidant input channel, oxidizer discharge pipeline, coolant
Input channel and coolant output channel, be collectively expressed as inlet and outlet piping 3 in Fig. 7.
In this embodiment, the both sides flow distribution zone cross section successively gradual manner on each monocell 1 is as follows: each list
On battery 1, the width of both sides flow distribution zone all keeps constant, and equal to the width of conversion zone, each monocell
On 1, the length of side flow distribution zone is successively successively decreased by being sized, and the length of opposite side flow distribution zone is pressed
Identical being sized successively is incremented by, and on every piece of monocell 1, the length sum of both sides flow distribution zone is equal；
Correspondingly, the length in each monocell 1 upper fluid distribution region successively successively decrease side flow distribution zone in corresponding
The length of fluid distribution pipe cross section is all successively successively decreased by same settings size, each monocell 1 upper fluid distribution district
The length of the fluid distribution pipe cross section that the length in territory is corresponding in being successively incremented by the flow distribution zone of side is all pressed
Same settings size is successively incremented by.Being sized as 1mm～10mm in above-mentioned variation pattern.This embodiment
In fluid distribution pipe cross section corresponding in the flow distribution zone of both sides on each monocell 1 rectangular, and above-mentioned set
It is sized to 2mm.
In this embodiment, fuel cell pack is same as in Example 1, still uses 12 pieces of monocells 1 to be laminated, as
Fig. 8 show the structural representation of bipolar plates, and in this embodiment, R1 is the length of first piece of bipolar plates of the present embodiment,
R2 is the width of first piece of bipolar plates, and R3 is the length of first piece of bipolar plates upper left side flow distribution zone, R4
Being the length in first piece of bipolar plates upper right side liquid distribution region, R5 is first piece of bipolar plates upper left side fluid distribution
The length of distribution duct cross section in region, R6 is distribution pipe in first piece of bipolar plates upper right side liquid distribution region
The length of road cross section, in this fuel cell pack, each piece of bipolar plates contour length is the most identical with width, and each piece double
Pole plate length is set as (A-22) mm, and width respective settings is Bmm, first piece of bipolar plates upper left side fluid
A length of Dmm, a length of (D-22) mm of right side flow distribution zone in distribution region, correspondingly, the
The a length of Cmm of fluid distribution pipe cross section, right side fluid in one piece of bipolar plates upper left side flow distribution zone
A length of (C-22) mm of fluid distribution pipe cross section in distribution region；It is changed in the manner described above,
Then a length of (D-2) mm of second piece of bipolar plates upper left side flow distribution zone, right side flow distribution zone
A length of (D-20) mm, correspondingly, fluid distribution pipe in the left side flow distribution zone in second piece of bipolar plates
A length of (C-2) mm of road cross section, the length of fluid distribution pipe cross section in the flow distribution zone of right side
For (C-20) mm；By that analogy, in last block bipolar plates (i.e. the 12nd piece of bipolar plates in the present embodiment)
A length of (D-22) mm of left side flow distribution zone, a length of Dmm of right side flow distribution zone, phase
Ying Di, in the left side flow distribution zone in last block bipolar plates (i.e. the 12nd piece of bipolar plates in the present embodiment)
A length of (C-22) mm of distribution duct cross section, the length of distribution duct cross section in the flow distribution zone of right side
Degree is Cmm.
Being illustrated in figure 9 the structural representation of electrode in this embodiment, the electrode in every piece of monocell 1 is double with above-mentioned
Pole plate is all Aided design, and the change in size of 12 cube electrodes is consistent with the variation pattern of above-mentioned bipolar plates, simultaneously
In fuel cell pack, each cube electrode effecting reaction area size is identical, i.e. first block of electricity of fuel cell pack in figure
The effecting reaction region Q31 of pole is until the effecting reaction region Q3n of last cube electrode of fuel cell pack is the completeest
Exactly the same, the electrode effecting reaction area size in this embodiment and the electrode comfort zone in embodiment 1 simultaneously
Territory is the most identical with the electrode effecting reaction region in embodiment 2.
It is the vertical section schematic diagram of the fuel cell pack of this embodiment as shown in Figure 10, as can be seen from the figure fuel
On each monocell 1 of battery pile, the length of side flow distribution zone is successively successively decreased by being sized, so that should
The trapezoidal shape in side liquid distribution vertical section, region, opposite side flow distribution zone on each monocell 1 of fuel cell pack
Length be successively incremented by by identical being sized, so that this side liquid distribution vertical section, region is inverted trapezoidal shape.
Correspondingly, the length of corresponding in the flow distribution zone of both sides on each monocell 1 distribution duct cross section is all by place
Flow distribution zone variation pattern carries out respective change, therefore can from the vertical section schematic diagram of fuel cell pack
Go out, the fluid distribution pipe vertical section in each flow distribution zone of fuel cell pack in flow distribution zone vertical profile
Trapezoidal shape that face matches or inverted trapezoidal shape.
Identical with embodiment 1 and embodiment 2, compared to existing fuel cell pack, the fuel cell of this embodiment
Heap weight has alleviated, and has on the one hand saved material, has saved cost, is on the other hand effectively increased fuel cell
The power density of heap.
Embodiment 4
As it is shown in fig. 7, fuel cell pack profile is same as in Example 3 in this embodiment, difference is this fuel
Fluid distribution pipe cross section corresponding in the flow distribution zone of both sides on each monocell 1 in battery pile is kidney-shaped, its
Yu Jun is same as in Example 3.
Being the structural representation of bipolar plates in this embodiment as shown in figure 11, R1 is first piece of bipolar plates of the present embodiment
Length, R2 is the width of first piece of bipolar plates, and R3 is the length of first piece of bipolar plates upper left side flow distribution zone
Degree, R4 is the length in first piece of bipolar plates upper right side liquid distribution region, and R5 is first piece of upper left effluent of bipolar plates
The length of distribution duct cross section in body distribution region, in R6 is first piece of bipolar plates upper right side liquid distribution region
The length of distribution duct cross section, fluid distribution pipe cross-sectional length in both sides is the length of figure middle part of the side tee section here.
Specifically, the size of the bipolar plates in each monocell 1 and the size of fluid distribution pipe cross section are all with real
Execute example 3 identical.
Being the structural representation of electrode in this embodiment as shown in figure 12, the electrode in every piece of monocell 1 is with above-mentioned
Bipolar plates is all Aided design, and the change in size of 12 cube electrodes is consistent with the variation pattern of above-mentioned bipolar plates, with
Time fuel cell pack in each cube electrode effecting reaction area size identical, i.e. in figure first piece of fuel cell pack
The effecting reaction region Q41 of electrode is until the effecting reaction region Q4n of last cube electrode of fuel cell pack is complete
Exactly the same, simultaneously in the electrode effecting reaction region in this embodiment and embodiment 1, example 2 and embodiment 3
Electrode effecting reaction region the most identical.
In this embodiment, the vertical section of fuel cell pack is identical with embodiment 3 fuel cell vertical section, such as Figure 10 institute
Showing, the most same as in Example 3, the fuel cell pack weight of this embodiment has alleviated, and has on the one hand saved material
Material, has saved cost, is on the other hand effectively increased the power density of fuel cell pack.
Above-mentioned 4 embodiments are only the typical embodiment of this utility model, fuel cell pack in 4 embodiments
Monocell number is identical, and the generated output of whole fuel cell pack is the most identical, and fuel cell pack both sides
The variation pattern of flow distribution zone cross section successively gradual change, the shape of fluid distribution pipe cross section and pile collection
One-tenth mode is otherwise varied, the square that fluid distribution pipe shape of cross section of the present utility model is not limited in above-described embodiment
Shape or kidney-shaped, it is also possible to be circular or other shapes, any those familiar with the art is new in this practicality
In the technical scope that type discloses, the change that can readily occur in or replacement, all should contain at protection model of the present utility model
Within enclosing.
Claims (7)
1. a fuel cell pack for fluid distribution pipe cross section gradual change, is laminated by polylith monocell (1),
This fuel cell pack includes the fluid distribution of conversion zone and the conversion zone both sides being positioned at fuel cell pack central authorities
Region, is equipped with fluid distribution pipe in the flow distribution zone of both sides, it is characterised in that on each monocell (1)
Conversion zone cross section identical, both sides flow distribution zone cross section successively gradual change, correspondingly, each monocell (1)
The fluid distribution pipe cross section successively gradual change of upper correspondence, and then make the flow distribution zone vertical section of fuel cell pack
Trapezoidal shape or inverted trapezoidal shape, simultaneously the fluid distribution pipe vertical section in each flow distribution zone of fuel cell pack
In matched trapezoidal shape or inverted trapezoidal shape.
The fuel cell pack of a kind of fluid distribution pipe cross section gradual change the most according to claim 1, it is special
Levying and be, the both sides flow distribution zone cross section successively gradual manner on each monocell (1) is as follows:
The width of each monocell (1) upper both sides flow distribution zone all keeps constant, and equal to the width of conversion zone
Degree, the length of each monocell (1) upper both sides flow distribution zone is all successively successively decreased by being sized；
Correspondingly, corresponding in the flow distribution zone of each monocell (1) upper both sides fluid distribution pipe cross section
Length is all successively successively decreased by identical being sized.
The fuel cell pack of a kind of fluid distribution pipe cross section gradual change the most according to claim 1, it is special
Levying and be, the both sides flow distribution zone cross section successively gradual manner on each monocell (1) is as follows:
The width of each monocell (1) upper both sides flow distribution zone all keeps constant, and equal to the width of conversion zone
Degree, the length of each monocell (1) upper side flow distribution zone successively successively decreases by being sized, opposite side fluid
The length in distribution region is successively incremented by by identical being sized, and every piece of upper two side liquids of monocell (1) distribute
The length sum in region is equal；
Correspondingly, the length in each monocell (1) upper fluid distribution region is successively successively decreased the flow distribution zone of side
The length of the fluid distribution pipe cross section of interior correspondence is all successively successively decreased by same settings size, flow distribution zone
The length of the fluid distribution pipe cross section that length is corresponding in being successively incremented by the flow distribution zone of side is all by identical
It is sized successively being incremented by.
4. according to the fuel cell pack of a kind of fluid distribution pipe cross section gradual change described in Claims 2 or 3,
It is characterized in that, described is sized as 1mm～10mm.
5. according to the fuel cell of a kind of fluid distribution pipe cross section gradual change described in any one of claims 1 to 3
Heap, it is characterised in that be equipped with 3 fluid distribution pipes in the both sides flow distribution zone of fuel cell pack, point
Do not connect the fuel inlet pipe of fuel cell pack, fuel delivery pipe road, oxidant input channel, oxidizer discharge
Pipeline, coolant input channel and coolant output channel.
The fuel cell pack of a kind of fluid distribution pipe cross section gradual change the most according to claim 1, it is special
Levying and be, this battery pile also includes two pieces of current-collecting panels (2) and the securing member (4) for self-contained battery heap, institute
The current-collecting panel (2) stated is separately positioned on the bottom of fuel cell pack and top layer and is fixed by securing member (4).
The fuel cell pack of a kind of fluid distribution pipe cross section gradual change the most according to claim 6, it is special
Levying and be, described securing member (4) is steel band or turnbuckle.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302098A (en) * | 2016-03-30 | 2017-10-27 | 上海神力科技有限公司 | A kind of fuel cell pack of fluid distribution pipe cross section gradual change |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302098A (en) * | 2016-03-30 | 2017-10-27 | 上海神力科技有限公司 | A kind of fuel cell pack of fluid distribution pipe cross section gradual change |
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