CN109390602A - The compacting bipolar plates of flow path volume with integration - Google Patents
The compacting bipolar plates of flow path volume with integration Download PDFInfo
- Publication number
- CN109390602A CN109390602A CN201810081671.3A CN201810081671A CN109390602A CN 109390602 A CN109390602 A CN 109390602A CN 201810081671 A CN201810081671 A CN 201810081671A CN 109390602 A CN109390602 A CN 109390602A
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- Prior art keywords
- bipolar plates
- flow path
- sheeting
- face
- mechanical labyrinth
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- 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
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
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- 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
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
- H01M8/0254—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form corrugated or undulated
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- 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
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
- H01M8/0208—Alloys
- H01M8/021—Alloys based on iron
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- 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
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0286—Processes for forming seals
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- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
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- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
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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
Abstract
The disclosure provides the method for being used to form the bipolar plates of the flow path volume with the integration formed by the folded edge of bipolar plates sheeting.The flow path volume of integration can be sealed at the opening peripheral edge of folded edge using one or more mechanical labyrinth formula sealings.The disclosure also provides the bipolar plates produced using disclosed method.
Description
Technical field
The disclosure belongs to electrochemical fuel cell field.Particularly, this disclosure relates to be used for electrochemical fuel cell stacks part
In bipolar plates, the bipolar plates including being capable of providing multiple fluid flow passages.
Background technique
Fuel cell pile component can be by alternately a series of BiCMOS devices flow plates are formed with membrane electrode assembly layer.?
It evaporates in cooling (EC) proton exchange membrane (PEM) fuel cell, water energy is enough to flow path or cathode stream flow via anode fluid
Dynamic path is introduced in fuel cell pile so that film water merges cooling battery.When with the liquid with sealing between
The liquid-cooling type fuel cell of cooling channel is compared, due to simple veneer arrangement and reduced battery pitch, EC battery energy
Good mass power density and volumetric power density are enough provided.In typical EC fuel cell arrangement, cooling water from along
One or more common manifolds that the side of fuel cell pile extends downwardly are injected into anode or cathode fluid flowing passage
In.Potential problems are as caused by the flow velocity of water, anode fluid and cathode fluid in this class manifold.Manifold can be supplied water to
In import at one end, supplied water in each battery in pile from the import.Since corrosion risk increase (is especially worked as
When using deionized water) and accumulation of bacteria risk increase, so stagnate or close to stagnate water flow any region in meeting
It goes wrong.EC fuel cell pile assigns the pressure drop on cathode and anode fluid the water similar with the level by effective area
Flat, this generates the dependences of the consistency to cell peripheral manifold and the gained pressure drop for battery to battery performance consistency
Property.When requirement on electric performance increases, the requirement to water flow velocity increases, and water can be delivered way by water using pressurized delivery by this
Diameter is delivered in battery and necessitates.
Some problems to be solved in fuel cell module are including: ensuring that in fuel, oxidant and coolant line
The uniform flow field of fluid distrbution；Minimize the pressure drop at inlet manifold both ends；Sealed pressure needed for minimum ensures air tight work；
Need to be made by precision assembly the structure and mechanization group of fluid flow plates in manufacture fuel cell module in view of a large amount of unit
Dress process is compatible；Reduce the pitch for constituting the fuel cell of pile, while operation being maintained in desired parameter；Reduce component
Quantity；Reduce total weight；Reduce materials'use and waste of material；Simplify design, manufacture and assembling；And fuel electricity is reduced in a word
The totle drilling cost of pond component.
It is therefore desirable to be able to provide the bipolar plates of multiple fluid flow paths (including water flow path), which can
Pressurized delivery is born, while allowing the simple manufacture and assembling of entire fuel cell module.The disclosure is for these and other weight
The needs wanted.
Summary of the invention
In typical fuel cell pile component, bipolar flow plate is substantially parallel in flow plate with being formed in
Track or channel, as the channel extended across the face of plate or as the serpentine path across the face of plate in alternating directions.For
Acquisition optimum performance, it is necessary to across flow field entire width (across the distance of all substantially parallel tracks or channel) into
The delivering of row fluid stream.Bipolar flow plate can be convenient for delivering multiple fluid streams from inlet manifold.In some systems, cathode fluid
Stream is delivered across first face of (across, on it) bipolar plates, opposite second of the anode stream flow across bipolar plates
Face is delivered, and water flow is delivered across the first face of bipolar plates or the second face.For the flow velocity to various fluid streams
It is individually controlled, it is necessary to which independent sealing approach is provided.Further, sealing approach must be consolidated enough to bear in high electricity
It is best to obtain to provide sufficient fluid flow rate under stream load the narrow approach generated and by minimum electrochemical cell pitch
Pressure stage necessary to electrical property, to maximize the volumetric power density of entire fuel cell pile.
In some embodiments of the disclosure, held by using the flow path for being formed by folding bipolar plates edge
One or more mechanical labyrinth formula (labyrinth) sealings of long-pending peripheral edge provide firm sealing in bipolar plates
Water flow path is capable of providing improved performance.Present inventors have observed that other encapsulating methods are (such as using independent thin slice
Laying seat stepwise (seat step) seals the peripheral edge of such flow path volume, or uses the overmolded process of injection molding
The sealing of the entire periphery of bipolar plates around the peripheral edge including flow path volume is provided) firm resistance to compression can not be provided
Sealing, while maintaining the flow path to the entire width in flow field.It is (public in international patent application no PCT/GB2007/001573
It opens and (is disclosed as international public affairs for international publication number WO 2007/129030A1), international patent application no PCT/GB2013/050634
The number of opening WO 2013/140135A2) and international patent application no PCT/GB2015/054020 (be disclosed as international publication number WO
Such encapsulating method is more fully described in 2016/097716A1), the full content of the application is incorporated herein for all mesh
's.Further, the use of one or more mechanical labyrinth formula sealings allow reduce seal member and simplify manufacture and
Assembling.The use of one or more mechanical labyrinth formula sealings also allows using simplified frame system, such as by the applicant
Entitled " plastic frame component and bipolar plates (the PLASTIC FRAME with the supply of through-flow fuel being filed concurrently herewith
ASSEMBLY AND BIPOLAR PLATE WITH THROUGH-FLOW FUEL FEED) " copending application described in, institute
The full content for stating application is incorporated herein for all purposes.
The disclosure provides the aspect of bipolar plates, which includes the sheeting having the first face and the second face, wherein
Sheeting includes along the flow path volume at the edge formed by folded edge, and wherein flow path volume has top
Layer and be fluidly connected to the flow path volumetric inlet pipeline being formed in sheeting.Flow path volume can have
Two open peripheral edges being positioned at the opposite edge of folded edge, and flow path volume can be along open outer
Peripheral edge utilizes one or more mechanical labyrinth formula sealings formed by the material displacement of top layer, the first face and the second face
Sealing.Mechanical labyrinth formula sealing can be straight or curved.Open peripheral edge can with one, two or more
Mechanical labyrinth formula both seals.
The disclosure provides the method to form bipolar plates, and wherein this method includes obtaining the thin slice having the first face and the second face
Material, punching press or compacting have multiple ripples, flow path volumetric inlet pipeline, multiple water flows guidance spy in flow field regions
One or more sheetings in the outgoing guide features of sign, multiple water flows and the outlet of multiple flow path volumes, should
Method further comprises along a part of folded edge folding flake material to generate with top layer, bottom and be positioned in folding
The water flowing path volume of two open peripheral edges at the opposite edge at folded edge, this method further comprises on water flow road
The punching press nearby of each of opening peripheral edge of diameter volume or one or more mechanical labyrinth formula sealings of compacting.
General description and described in detail below exemplary and explanatory only, and the disclosure is not limited, such as appended power
As defined in benefit requirement.In view of the detailed description of the disclosure as herein provided, the other aspects of the disclosure are to this
Field technical staff will be apparent.
Detailed description of the invention
When read in conjunction with the accompanying drawings, it summary of the invention and described in detail below is further understood.In order to illustrate this public affairs
It opens, the illustrative embodiments of the disclosure is shown in attached drawing；However the present disclosure is not limited to disclosed specific method, composition with
And device.In addition, attached drawing is not necessarily drawn to scale.In the accompanying drawings:
Fig. 1 shows the top view of the aspect of the illustrative embodiments of bipolar plates；
Fig. 2 shows the bottom views of the aspect of the illustrative embodiments of bipolar plates shown in Fig. 1；
Fig. 3 shows the perspective sectional view of the aspect of the exemplary fabrication of the bipolar plates for the disclosure；
Fig. 4 shows the perspective sectional view of the aspect of the illustrative embodiments of bipolar plates；
Fig. 5 shows the perspective sectional view of the aspect of the illustrative embodiments of bipolar plates shown in Fig. 4；
Fig. 6 shows the top view of the aspect of the illustrative embodiments of bipolar plates shown in Fig. 4 to Fig. 5；
Fig. 7 to Fig. 9 shows the top view of the aspect of the illustrative embodiments of bipolar plates shown in Fig. 4 to Fig. 5；
Figure 10 shows the side view of the aspect of the illustrative embodiments of bipolar plates shown in Fig. 4 to Fig. 5；
Figure 11 shows the side view of the aspect of the illustrative embodiments of bipolar plates shown in Fig. 4 to Fig. 5；
Figure 12 shows the side view of the aspect of the illustrative embodiments of bipolar plates shown in Fig. 4 to Fig. 5；And
Figure 13 shows the side view of the aspect of the illustrative embodiments of bipolar plates shown in Fig. 4 to Fig. 5.
In the accompanying drawings, identical appended drawing reference represents corresponding component in different views.Be described in attached drawing with it is attached
Figure number is incorporated to herein by reference, as fully expounding herein.
Specific embodiment
By reference to the detailed description below in conjunction with attached drawing and example progress, it is more readily understood that the disclosure, attached drawing and shows
Example forms a part of this disclosure.It should be appreciated that the present disclosure is not limited to it is described herein and/or shown in specific device, method, answer
With, condition or parameter, and the term as used herein is only for describing the purpose of special example by way of example and be not intended to
Limit the disclosure claimed.In addition, as used in the specification including the appended claims, singular " one (a,
An) " and "the" includes plural number, and includes at least the special value to the reference of special numerical value, unless in addition context is clearly advised
It is fixed.Term " multiple " as used herein means more than one.When the range of expression value, another example includes special from one
It is worth and/or is especially worth to another.Similarly, when value is expressed as approximation by using antecedent " about ", it should be understood that
Special value forms another example.All ranges all have inclusive and associativity.
It should be understood that certain spies of the disclosure described in the context of independent example for clarity herein
Offer can also be combined in single illustrative embodiments in sign.On the contrary, for simplicity in single illustrative embodiments
Context described in the various features of the disclosure can also be provided individually or in a manner of any sub-portfolio.Further,
Reference to the value stated in range includes each and each value within the scope of this.
On the one hand, the disclosure provides the bipolar plates for being used for electrochemical fuel cell.It is bipolar as described in Fig. 1 and Fig. 2
Some embodiments of plate 100 can be formed by sheeting, which has the first face 110a and the second face 110b.Cathode
Fluid stream and anode stream flow are delivered in the fuel cell system for including bipolar plates 100 across the first face 110a and the second face
110b, the wherein upper flowing of cathode stream flow and anode stream flow in the 110b of the face face 110a/.Aqueous fluid stream can be through
It is provided in cathode stream flow or anode stream flow by flow path.Flow path can include by folding bipolar plates edge
The 112 flow path volumes formed, wherein water is delivered to bipolar plates via flow path volume outlet 125 by flow path volume
First face 110a.Flow path volume is formed with open peripheral edge 120, seals open peripheral edge 120 to be formed
Flow path.As, schematically as it can be seen that bipolar plates collapsed shape is formed by end, the end is via the bipolar edges of boards of folding in Fig. 3
Edge 112 is folded to form top layer 115.Exemplary mechanical labyrinth sealing portion 150 is drawn in fig. 1 and 2, by by top layer
It is formed in first face 110a of 115 a part indentation bipolar plates, material is caused to be displaced to the bottom of folding part from top layer 115
In.
The aspect of the illustrative embodiments of the bipolar plates of the disclosure is schematically shown in Fig. 4 into Figure 13.Fig. 4 is shown
The perspective view of bipolar plates 100 and depict the details of the second face 110b.Second face 110b can be provided with across with width
The flow channel 170 in 175 flow field.It is therein whole will be assembled in bipolar plates to provide flow path volumetric inlet pipeline 160
The water inlet manifold of a fuel cell module (not shown) connects.The first face 110a, can be arranged in water flow guide features 162
In order to provide the guidance of flow path in two face 110b or both, to be distributed/be distributed in entire stream across entire flow field width 175
On field width degree 175.As shown in Figure 5, top layer 115, the first face 110a can be arranged in the outgoing guide features 124 of further water flow
Or both in provide the guidance of the water flow towards flow path volume outlet 125, flow path volume outlet 125 leads to the
Flow channel 172 in the flow field regions of 110a on one side.Open peripheral edge 120 is schematically shown in Fig. 5, and Fig. 5 is shown
In terms of the illustrative embodiments before sealing is applied to open peripheral edge.As schematically shown in Fig. 6, lean on
The sealing area 200 of nearly open peripheral edge 120 can be used in seal feature or element and be produced with being provided to by folded edge feature
The water-stop of raw water flow inside path volume.
Region 200 can be used in providing sealing along open peripheral edge 120.In some embodiments, sealing opens
Peripheral region 120 can be provided between top layer 115 and lower layer 110a/b by the open peripheral edge of laser welding welding come
It realizes.In other embodiments, sealing can be provided along open peripheral edge 120 via resistance spot welding process.Into one
In the embodiment of step, sealing can be provided along open peripheral edge 120 via projection welding process.In other embodiments,
Other material tab can be provided for the orthogonal bipolar plates edge 112 for folding into folding, wherein after initial fold
Apply orthogonal folding to form flow path volume.Sealing can be formed by by moulded elastomeric compound in some embodiments
Plug realize that the plug can discreet component between the insert layer 115/110a.In other embodiments, can pass through
Top layer 115 and lower layer 110a/110b are crimped into place to form sealing at open peripheral edge 120.Further real
It applies in mode, open 120 compressive deformation of peripheral edge can be surrounded by gasket seal to form sealing.In other embodiment
In, jointing material can be applied to the top layer 115 in region 200 and the one or both in lower layer 110a and in the area
Solidification is to form sealing.In some embodiments, jointing material can be epoxy resin.In other embodiments, it bonds
Material can be viscous for gel, solvent-based adhesive, polymer dispersing binder, contact adhesive, hotmelt or reactivity
Mixture (such as, polyester resin, polyurethane resin or acrylic polymer).
Mechanical sealing part some illustrative embodiments (including but not limited to sinusoidal, bending, complicated or straight sealing or
Their combination) it is schematically shown in Fig. 7 into Fig. 9.Mechanical labyrinth formula sealing can be placed in region 200 shown in Fig. 6
In, and it is preferably disposed in water distribution of the open peripheral edge 120 nearby to avoid interference on flow field overall with/entire width.
Fig. 7 depicts the aspect of an embodiment of mechanical labyrinth formula sealing, wherein mechanical labyrinth formula is arranged at each region 200
Sealing 250.Single mechanical labyrinth formula sealing 250 can be formed at every end.Fig. 8 depicts the another of mechanical labyrinth formula sealing
The aspect of one embodiment, wherein the multiple mechanical labyrinth formula sealings 250 of setting at every end in corresponding region 200.Fig. 8 is retouched
Draw that there are two the arrangements of mechanical labyrinth formula sealing in every end tool, wherein mechanical labyrinth formula sealing 250a and 250b be at one end
Place, and mechanical labyrinth formula sealing 250c and 250d are arranged at the other end.Adjacent sealing separates enough at every end
Distance is to allow plate material mechanical displacement without shearing, pierce through or tear plate material.Mechanical labyrinth formula sealing 250a/ machinery fan
Palace formula sealing 250b/ mechanical labyrinth formula sealing 250c/ mechanical labyrinth formula sealing 250d can be both formed in identical direction
On, material displacement can be carried out in the same direction (to be displaced in 110a/ lower layer, lower layer 110b from top layer 115, or from lower layer
110a/ lower layer 110b is displaced in top layer 115) or mechanical sealing part 250a/ mechanical labyrinth formula sealing 250b/ machinery fan
Some directions that may be formed at material displacement in the formula sealing 250c/ mechanical labyrinth formula sealing 250d of palace, and it is other
Mechanical labyrinth formula sealing is formed in the opposite direction of material displacement.Fig. 9 shows mechanical labyrinth formula sealing in region 200
The aspect of further embodiment.In some embodiments, mechanical labyrinth formula sealing 250 is capable of providing to stop water flow
Dead space part 260 in the corner of path volume, and cooperate with water flow guide features 162 and the additional of flow path to be provided draw
It leads.The embodiment for stopping such mechanical labyrinth formula sealing of dead space part 260 can include at a certain angle (in Fig. 9
Be not shown) setting straight mechanical labyrinth formula sealing, wherein the first end in the labyrinth sealing portion at edge 112 is configured to
Than folding opening place labyrinth sealing portion second end closer to flow path volumetric inlet pipeline 160, which is set
It is set to closer to open peripheral edge 120.Straight mechanical labyrinth formula sealing can relative to the angle of open peripheral edge 120
It is about 0 ° to about 60 °.Straight mechanical labyrinth formula sealing relative to the angle of open peripheral edge 120 can be about 0 °, about 5 °,
About 10 °, about 15 °, about 20 °, about 25 °, about 30 °, about 35 °, about 40 °, about 45 °, about 50 °, about 55 ° or about 60 °.Fig. 9 shows curved
Bent mechanical labyrinth formula sealing 250e/ mechanical labyrinth formula sealing 250f/ mechanical labyrinth formula sealing 250g/ mechanical labyrinth formula
Sealing 250h, the sealing provide similar function to cooperate with water flow guide features 162 and stop the dead of corner portion
Space segment 260.In some embodiments, a curved mechanical labyrinth formula sealing, example are only able to use at every end
Such as, only it is able to use discribed sealing 250e and sealing 250h.
Figure 10 and Figure 11 depicts the side view of the bipolar plates 100 towards folded edge 112.Figure 10 and Figure 11, which is shown, to be based on
Different from the aspect of the sealing element of the method for mechanical labyrinth formula sealing.As shown in Figure 10, thin slice liner can be used, wherein thin
Piece pads 300a and 300b and seals open peripheral edge 120 for seat stepwise (seat step).Inventor is it has been observed that thin slice
The use of liner, which does not provide, is able to bear the reliable of pressurized delivery necessary to desired electric load in fuel cell pile component
Sealing.Further, the use of such independent thin slice liner complicates the pile assembling during manufacturing process, to need
It is accurately positioned around open peripheral edge 120.Figure 11 depicts the use for being molded overmolded liner, which can surround
The open formation of peripheral edge 120.Inventor is it has been observed that overmolded process can leave a void 315 and can not provide completely
Sealing, or when overmolded gasket material penetrates into top layer 115 below and entrance is schematically depicted as area in Figure 11
When in the flow path in domain 320, overmolded process will lead to " exudation ", wherein penetrating into material interference across whole flow field width
175 water delivering.Further, when assembling fuel cell pile, the relatively sharp corner edge 322 of top layer 115 can
Overmolded material is cut/torn when overmolded material is under compression.
Figure 12 and Figure 13 schematically depicts exemplary mechanical labyrinth sealing portion.Double towards folded edge 112
In the side view of pole plate 100, it can be seen that the width " w " and depth " d " of the material displacement of mechanical labyrinth formula sealing 250.It is deep
Spending " d " can be between about the 15% of plate thickness " D " and about 85%.Depth " d " is necessary for enough the hundred of total plate thickness " D "
Divide ratio, to provide the material necessary to effective mechanical labyrinth formula sealing between top layer 115 and bottom 110a/ bottom 110b
Displacement interaction, but be unlikely to too deep and the material displacement when being more than elongation/limit of stretch of plate material is made to cause to pierce through, tear
Open or tear material layer.In the exemplary embodiment, mechanical labyrinth formula sealing depth " d " can be the pact of plate thickness " D "
15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about
70%, about 75%, about 80% or about 85%.In some embodiments, mechanical labyrinth formula sealing depth " d " is in plate thickness
It between about the 40% of " D " and about 60%, and can be in some embodiments about the 50% of plate thickness " D ".Width " w " by
For being pressed into the limitation for forming the intensity of the tool of mechanical labyrinth formula sealing in plate layer, and width " w " narrow can lead to is cut
It cuts or cuts plate material rather than provide material displacement for desired sealing.Figure 13 shows exemplary embodiment party shown in Fig. 8
The side view of formula, and schematically show the material displacement to form mechanical labyrinth formula sealing 250a and 250b.
According to some aspects of the disclosure, the method to form bipolar plates is provided.Bipolar plates sheeting can be stamped or press
It is made with flow characteristics, such as ripple, the flow path across 170/ flow channel 172 of the flow channel of flow field width 175
Volumetric inlet pipeline 160, water flow guide features 162, water flow are gone out in guide features 124 and flow path volume outlet 125
It is one or more.The method for forming bipolar plates can further comprise folding bipolar plates fine sheet along folded edge 112
A part of material, to generate the flow path volume with top layer 115 and bottom 110a/ bottom 110b.Then, folding is bipolar
Plate can be stamped or be pressed into each of opening peripheral edge 120 of flow path volume nearby with one or more
A mechanical labyrinth formula sealing 250.
Bipolar plate material should be enough ductile materials to allow to generate feature via punching press or compacting, allows to be formed folding
It folds edge 112 and allows to be formed 150/ mechanical labyrinth formula sealing 250 of mechanical labyrinth formula sealing.Suitable bipolar plate material
It can be stainless steel.
Those of ordinary skill in the art are readily apparent that, can in the manufacture of the component in apparatus as disclosed herein and system
Use a variety of materials.Any suitable structure and/or material can be used in various features disclosed herein, and skilled skill
Art personnel will be based on various Considerations (being expected to use, will use system in it including system disclosed herein
Expection place and the system equipment that is intended to be used therewith and/or attachment and other Considerations) selection is appropriate
Structure and material.Metal polymer composite, ceramics and the metal material of conventional polymerization are suitably employed in various parts.
Determine that the material for being later discovered that and/or developing being suitably employed in features herein disclosed and element also will be considered as that can connect
It receives.
When range used herein is used for physical property (such as molecular weight) or chemical property (such as chemical formula), it is used for
In all combinations of the range of concrete example therein and sub-portfolio are intended to be included in.
The disclosure of cited or described each patents, patent applications and publications is herein by reference in the literature
It is integrally incorporated herein.
Those of ordinary skill in the art are readily apparent that, can make various changes and modifications to the example of the disclosure, and energy
It is enough to carry out such change and modification without departing from the spirit of the present disclosure.It is therefore intended that appended claims purport
All such equivalent variations in the true spirit and range that covering such as falls into the disclosure.
Claims (30)
1. a kind of bipolar plates, the bipolar plates include:
Sheeting with the first face (110a) and the second face (110b)；
Wherein the sheeting includes with the flow path volume along an edge formed by folded edge (112), institute
Flow path volume is stated with top layer (115)；
Wherein the flow path volume includes two open peripheries being located at the opposite edge of the folded edge (112)
Edge (120)；
Wherein the flow path volume is sealed along the open peripheral edge (120)；Also,
Wherein the flow path volumetric fluid it is connected to the flow path volumetric inlet pipe being formed in the sheeting
Road (160).
2. bipolar plates according to claim 1, one of them or more mechanical labyrinth formula sealing (250) passes through described
The material displacement of top layer (115), the first face (110a) and the second face (110b) is formed.
3. further comprising being formed in the fine sheet according to claim 1 to the bipolar plates described in any one of claim 2
Multiple ripples in material, the multiple ripple limit multiple flow channels (172) on first face (110a) and described the
Multiple flow channels (170) on two faces (110b), wherein the multiple flow channel (170/172), which limits, has flow field width
(175) flow field.
4. bipolar plates according to claim 3, further comprise:
The multiple water flow guide features (162) being formed in first face (110a), second face (110b) or both, institute
Multiple water flow guide features (162) are stated to be configured to provide from the flow path volumetric inlet pipeline (160) to the flow field
The guidance of the fluid stream of width.
5. bipolar plates according to any one of the preceding claims, further comprise:
The multiple water flows being formed in the top layer (115), the first face (110a) or both go out guide features (124), described
Multiple water flows guide features (124) of going out are configured to provide towards being formed in multiple flow paths in the top layer (115)
Volume exports the guidance of the fluid stream of (125).
6. the bipolar plates according to any one of claim 2 to claim 5, in which:
One or more mechanical labyrinth formula sealing includes straight mechanical labyrinth formula sealing.
7. bipolar plates according to claim 6, in which:
The straight mechanical labyrinth formula sealing is both with respect to the angled formation of the open peripheral edge (120).
8. bipolar plates according to claim 7, in which:
The straight mechanical labyrinth formula sealing relative to the angled formation of the open peripheral edge (120) is blocked in
Dead space area (260) in the corner of the flow path volume.
9. bipolar plates according to claim 8, in which:
The straight mechanical labyrinth formula sealing relative to the angled formation of the open peripheral edge (120) is configured
The additional guidance of the flow path is provided at cooperating with water flow guide features (162).
10. the bipolar plates according to any one of claim 2 to claim 5, in which:
One or more mechanical labyrinth formula sealing includes curved mechanical labyrinth formula sealing.
11. the bipolar plates according to any one of claim 2 to claim 5, wherein each open peripheral edge (120)
With multiple mechanical labyrinth formula both seals.
12. the bipolar plates according to any one of claim 2 to claim 11, wherein each mechanical labyrinth formula sealing
It is formed with the depth " d " between about the 15% and about 85% of the sheeting thickness " D ".
13. the bipolar plates according to any one of claim 2 to claim 12, wherein each mechanical labyrinth formula sealing
It is formed with the depth " d " between about the 40% and about 60% of the sheeting thickness " D ".
14. the bipolar plates according to any one of claim 2 to claim 13, wherein each mechanical labyrinth formula sealing
It is formed about 50% depth " d " with the sheeting thickness " D ".
15. bipolar plates according to any one of the preceding claims, wherein the sheeting includes stainless steel.
16. a kind of method for forming bipolar plates, which comprises
Obtain the sheeting with the first face (110a) and the second face (110b)；
Punching press or the compacting sheeting, with multiple ripples, the flow path volumetric inlet pipeline in flow field regions
(160), multiple water flow guide features (162), multiple water flows outgoing guide features (124) and the outlet of multiple flow path volumes
(125) one or more in；
A part of the sheeting is folded along folded edge (112) to generate flow path volume, the flow path
Volume has top layer (115), bottom (110a/110b) and be located at the opposite edge of the folded edge (112) two
Open peripheral edge (120)；
One or more regions near each of described open peripheral edge (120) of the flow path volume
(200) one or more sealings are provided in.
17. the method according to claim 16 for forming bipolar plates, wherein described provide one or more sealing packets
It includes one or more in the punching press nearby of each of described open peripheral edge (120) of the flow path volume or compacting
Mechanical labyrinth formula sealing (250).
18. according to claim 16 or claim 17 described in formation bipolar plates method, in which:
The sheeting is stamped or is pressed into have and be formed in the sheeting to limit first face (110a)
On multiple flow channels (172) and second face (110b) on multiple flow channels (170) multiple ripples, wherein institute
It states multiple flow channels (170/172) and limits the flow field with flow field width (175).
19. the method according to claim 18 for forming bipolar plates, in which:
The sheeting is stamped or is pressed into flow path volumetric inlet pipeline (160)；And
The sheeting, which is stamped or is pressed into have, is formed in first face (110a), second face (110b) or two
Multiple water flow guide features (162) in person, the multiple water flow guide features (162) are configured to provide from the water flow road
Diameter volumetric inlet pipeline (160) arrives the guidance of the fluid stream of the flow field width.
20. according to claim 16 or claim 17 described in formation bipolar plates method, in which:
The sheeting is stamped or is pressed into have and be formed in the top layer (115), the first face (110a) or both
Multiple water flows go out guide features (124), and the multiple water flow guide features (124) of going out are configured to provide towards being formed in
The guidance of the fluid stream of multiple flow path volumes outlet (125) in the top layer (115).
21. according to claim 17 to the formation bipolar plates described in any one of claim 20 method, in which:
One or more mechanical labyrinth formula sealing includes straight mechanical labyrinth formula sealing.
22. the method according to claim 21 for forming bipolar plates, in which:
The straight mechanical labyrinth formula sealing each is formed as angled relative to the open peripheral edge (120).
23. the method according to claim 22 for forming bipolar plates, in which:
The straight mechanical labyrinth formula sealing relative to the angled formation of the open peripheral edge (120) is blocked in
Dead space area (260) in the corner of the flow path volume.
24. the method according to claim 22 for forming bipolar plates, in which:
The straight mechanical labyrinth formula sealing relative to the angled formation of the open peripheral edge (120) is configured
The additional guidance of the flow path is provided at cooperating with water flow guide features (162).
25. according to claim 17 to the formation bipolar plates described in any one of claim 20 method, in which:
One or more mechanical labyrinth formula sealing includes curved mechanical labyrinth formula sealing.
26. according to claim 17 to the formation bipolar plates described in any one of claim 25 method, wherein each opening
The multiple mechanical labyrinth formula both seals of peripheral edge (120).
27. according to claim 17 to the formation bipolar plates described in any one of claim 26 method, wherein each machinery
Labyrinth sealing portion is formed with the depth " d " between about the 15% and about 85% of the sheeting thickness " D ".
28. according to claim 17 to the formation bipolar plates described in any one of claim 27 method, wherein each machinery
Labyrinth sealing portion is formed with the depth " d " between about the 40% and about 60% of the sheeting thickness " D ".
29. according to claim 17 to the formation bipolar plates described in any one of claim 28 method, wherein each machinery
Labyrinth sealing portion be formed be the sheeting thickness " D " about 50% depth " d ".
30. according to claim 16 to the formation bipolar plates described in any one of claim 29 method, wherein the thin slice
Material includes stainless steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1712958.6A GB2565373B (en) | 2017-08-11 | 2017-08-11 | Pressed bipolar plate having integrated water flowpath volume |
| GB1712958.6 | 2017-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109390602A true CN109390602A (en) | 2019-02-26 |
Family
ID=59896063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810081671.3A Pending CN109390602A (en) | 2017-08-11 | 2018-01-29 | The compacting bipolar plates of flow path volume with integration |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109390602A (en) |
| GB (1) | GB2565373B (en) |
| WO (1) | WO2019030506A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111313054A (en) * | 2020-04-15 | 2020-06-19 | 浙江锋源氢能科技有限公司 | Fuel cell cooling assembly and fuel cell |
| CN113346099A (en) * | 2021-08-02 | 2021-09-03 | 爱德曼氢能源装备有限公司 | Metal bipolar plate of proton exchange membrane fuel cell adhesion-free sealing structure |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020212726A1 (en) * | 2020-10-08 | 2022-04-14 | Robert Bosch Gesellschaft mit beschränkter Haftung | bipolar plate and fuel cell stack |
| DE102022106374A1 (en) * | 2022-03-18 | 2023-09-21 | Schaeffler Technologies AG & Co. KG | Bipolar plate and method for producing a bipolar plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040106031A1 (en) * | 2002-07-25 | 2004-06-03 | Scott Sherman | Metal foam interconnect |
| US20100209803A1 (en) * | 2009-02-13 | 2010-08-19 | Hitachi, Ltd. | Fuel cell |
| GB2500383A (en) * | 2012-03-19 | 2013-09-25 | Intelligent Energy Ltd | Fuel cell fluid distribution |
| US20150050575A1 (en) * | 2012-03-19 | 2015-02-19 | Intelligent Energy Limited | Fuel cell fluid distribution |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2437767B (en) * | 2006-05-05 | 2010-11-17 | Intelligent Energy Ltd | Fuel cell fluid distribution plates |
-
2017
- 2017-08-11 GB GB1712958.6A patent/GB2565373B/en not_active Expired - Fee Related
-
2018
- 2018-01-29 CN CN201810081671.3A patent/CN109390602A/en active Pending
- 2018-08-03 WO PCT/GB2018/052228 patent/WO2019030506A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040106031A1 (en) * | 2002-07-25 | 2004-06-03 | Scott Sherman | Metal foam interconnect |
| US20100209803A1 (en) * | 2009-02-13 | 2010-08-19 | Hitachi, Ltd. | Fuel cell |
| GB2500383A (en) * | 2012-03-19 | 2013-09-25 | Intelligent Energy Ltd | Fuel cell fluid distribution |
| US20150050575A1 (en) * | 2012-03-19 | 2015-02-19 | Intelligent Energy Limited | Fuel cell fluid distribution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111313054A (en) * | 2020-04-15 | 2020-06-19 | 浙江锋源氢能科技有限公司 | Fuel cell cooling assembly and fuel cell |
| CN113346099A (en) * | 2021-08-02 | 2021-09-03 | 爱德曼氢能源装备有限公司 | Metal bipolar plate of proton exchange membrane fuel cell adhesion-free sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2565373B (en) | 2020-08-05 |
| GB2565373A (en) | 2019-02-13 |
| GB201712958D0 (en) | 2017-09-27 |
| WO2019030506A1 (en) | 2019-02-14 |
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