CN207233866U - A kind of dual polar plates of proton exchange membrane fuel cell structure and fuel cell pile - Google Patents
A kind of dual polar plates of proton exchange membrane fuel cell structure and fuel cell pile Download PDFInfo
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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
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- 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
A kind of dual polar plates of proton exchange membrane fuel cell structure and fuel cell pile are the utility model is related to, belongs to Proton Exchange Membrane Fuel Cells technical field.Bipolar plates are formed by anode plate and cathode plate lamination adhesive；The front of positive plate is equipped with hydrogen flow field；The front of minus plate is equipped with air flow channel, and air flow channel is made of a plurality of air flow channel groove；The back side of minus plate is equipped with cooling liquid flowing channel, and cooling liquid flowing channel is made of a plurality of cooling liquid flowing channel groove.Fuel cell pile is stacked gradually and formed by membrane electrode and power bipolar plates, and cathode enhancement layer is additionally provided between the cathode of film battery plate and the cathode of bipolar plates.There is dual-cooled with liquid cooling bipolar plates using integrating air-cooled, simplify auxiliary coolant system, improve the uniformity of Temperature Distribution in pile, while be easily achieved the quick cold start-up under cryogenic conditions.
Description
Technical field
It the utility model is related to a kind of dual polar plates of proton exchange membrane fuel cell structure, fuel cell pile and its controlling party
Method, belongs to Proton Exchange Membrane Fuel Cells technical field.
Background technology
Proton Exchange Membrane Fuel Cells（proton exchangemembrane fuel cell, PEMFC）It is a kind of straight
Connect by the chemical energy in fuel change into electric energy and without the electrochemical generating unit of burning, have cleaning, it is efficient, energy saving,
It is environmentally friendly, simple in structure, start speed it is fast, energy conversion efficiency is high, fuel source is wide, fuel make up speed is fast, applied widely
Got the attention etc. characteristic.
Fuel cell is substantially a kind of electricity, heat, the open energy conversion device of three coproduction of water, similar in working method
In internal combustion engine, and electrochmical power source is similar in operation principle.Pemfc stack can give off substantial amounts of heat while producing electricl energy
Can, therefore, it is necessary to maintain normal working temperature by rational heat dissipation design, otherwise pile internal temperature is excessive causes pile
Failure, or even explosion danger occurs.The heat dissipation generally use water cooling or air-cooled method of pemfc stack.Water cooling is to pass through cooling
Liquid takes the heat produced in pile out of, into the cooling cycle pipeline outside pile, by external heat-exchanging by cooling liquid
Cooled down, cooling liquid after cooling returns to pile by circulation line again；Air-cooled method is by forcing to flow normal temperature air
The heat produced in pile is taken out of through pile.Water cooling heat dissipation effect is preferable, therefore can be applied to traffic, large-scale power generation, consolidates
The high-power power consumption field such as the cogeneration of heat and power of fixed pattern, but the drawback is that to the more demanding of system, it is necessary to match huge cold
But system, it is also necessary to which extra complicated and expensive air supply system, these undoubtedly increase the cost of system, at the same time
The specific power of system is reduced, the commercialization for hindering fuel cell is promoted and applied.And for air-cooled pemfc stack, though
Its right auxiliary system is relatively easy, but the heat dissipation effect of air-cooled method is bad, and Temperature Distribution is very uneven in pile, it is difficult to realizes
The long-time steady operation of pile.In addition, the air flow field of current air-cooled pemfc stack is using common parallel direct current
Road, forced air flow can only rely on gas diffusion to reach the participation reaction of phase reaction area, be unfavorable for improving pile after entering pile
Specific power.
In recent years, the technological progress in terms of cost and durability made fuel cell be in the edge of industrialization, fuel electricity
The cold start-up problem in pond thus become more prominent, it is real particularly for applied to automobile and the fuel cell of field base station
Under existing battery freezing point it is quick start and mitigate as much as possible or eliminate destruction of the low temperature to battery be one be badly in need of solving ask
Topic.In low temperature environment below freezing, the liquid water of inside battery freezes that ill effect will be produced to battery, such as
Difficulty in starting, start slowly even startup failure, and after repeatedly starting internal structure may be caused to occur damaging and breaking ring, makes
Into problems such as performance degradations.However, the low-temperature cool starting of pem fuel cell stack is fuel cell system reality
Using the process that will necessarily be undergone.At present, in order to solve the cold start-up of fuel cell, researchers tend to monocell with
Embedded electrical heating original paper, this method make setting for battery while solving the problems, such as the cold start-up of fuel cell between pole plate
Meter becomes more complicated.
In addition, caused by the various vibratory shock loads being subject in fuel cell operation fuel cell end plate deformation,
Deformation that end plate occurs under the action of pretightning force inside pile etc., can seriously affect pretightning force distribution inside fuel cell pile
Uniformity, so as to influence basic power generation performance, stability and the service life of fuel cell.Therefore, high intensity, lighting
End plate is conducive to improve the performance and energy density of fuel cell.
Utility model content
It the utility model is related to a kind of dual polar plates of proton exchange membrane fuel cell structure, fuel cell pile and its controlling party
Method, has the function of dual-cooled with liquid cooling bipolar plates using integrating air-cooled, simplifies auxiliary coolant system, improve
The uniformity of Temperature Distribution in pile, while it is easily achieved the quick cold start-up under cryogenic conditions；By in bipolar plate material
The middle graphene that introduces can improve the electric conductivity of bipolar plates；The runner in minus plate flow field uses periodic gradually changing cross section, can carry
Rise the partial pressure of oxygen on phase reaction area surface；Porous gas diffusion layer has the hydrophobic ability of gradient distribution in gas flow direction, carries
The high stability of fuel cell pack；There is higher intensity, stronger conduction using the cathode enhancement layer of porous network structure
Property, excellent corrosion resistance, improve power, stability and the service life of pile.
The first aspect of the utility model, there is provided：
A kind of dual polar plates of proton exchange membrane fuel cell structure, is laminated by anode plate and cathode plate；Positive plate
Front is equipped with hydrogen flow field；The front of minus plate is equipped with air flow channel, and air flow channel is made of a plurality of air flow channel groove；
The back side of minus plate is equipped with cooling liquid flowing channel, and cooling liquid flowing channel is made of a plurality of cooling liquid flowing channel groove.
In one embodiment, it is not parallel between air flow channel groove and cooling liquid flowing channel groove.
In one embodiment, air flow channel groove and cooling liquid flowing channel groove are between the projection of plane where bipolar plates
To be mutually perpendicular to.
In one embodiment, in cooling liquid flowing channel groove insertion air flow channel groove；So that the horizontal stroke of air flow channel groove
Section is in periodically change.
In one embodiment, the hydrogen flow field is parallel flow field or serpentine flow, the groove depth in flow field for 0.2~
0.6mm, the groove width in flow field is 0.4~1.8mm, and the ridge width in flow field is 0.5~2.0mm.
In one embodiment, the groove depth of air flow channel groove 30 is 1.5mm~3.5mm, and groove width is 1.5~3.5mm, ridge
Width is 1.5~3.5mm.
In one embodiment, the circle that the shape of the cross section in the coolant flow field forms for a minor arc and a line segment
Arc, the area of cross section is 0.5~5mm2, ridge width is 1.0~3.5mm.
In one embodiment, the thickness of positive plate is 0.5~1.2mm, and the thickness of minus plate is 1.9~4.2mm.
In one embodiment, the positive plate, the material of minus plate are by graphite substrate, graphene, potting resin
The strong conductive material formed, its molding mode are that engraving, rolling, punching press or compression molding, the graphite substrate are day
Right graphite, Delanium or expanded graphite, the mass content of graphite substrate is 90~95%, the mass content of the graphene
For 1~5%, the potting resin is thermosetting resin or thermoplastic resin, and the mass content of potting resin is 4~5%.
Second aspect of the utility model, there is provided：
A kind of fuel cell pile, is to be stacked gradually to form by membrane electrode and bipolar plates, film battery plate cathode with it is bipolar
Cathode enhancement layer is additionally provided between the cathode of plate 1.
In one embodiment, the cathode enhancement layer is sufficiently mixed by graphite fibre, graphene, resin adhesive
The conductive support layer with higher-strength in porous net structure formed afterwards.
In one embodiment, the mass content of the graphite fibre in cathode enhancement layer is 90~95%, and graphite fibre is poly-
Acrylonitrile group graphite fibre or Pitch-Based Graphite Fibers, the mass content of graphene is 1~5%, and resin adhesive is phenolic resin
Or epoxy resin 1~4%.It can also be conductive graphite fibre material.
In one embodiment, the shape in the hole of cathode enhancement layer is circular, rectangular or square, and the area in hole is 0.25
~1.0mm2, pitch of holes is 0.6~1.5mm.
In one embodiment, it is the proton exchange membrane of catalyst coating among the membrane electrode, is coated in catalyst
The both sides of proton exchange membrane 19 be covered with porous gas diffusion layer.
In one embodiment, one end of the proton exchange membrane of catalyst coating is additionally provided with strengthening membrane.
In one embodiment, porous gas diffusion layer is by carbon paper substrate layer and microporous layers（MPL）It is laminated.
In one embodiment, the surface of carbon paper substrate layer is hydrophobic processing, and while along hydrogen flow direction, carbon
The increase of hydrophobicity property in gradient in paper-based substrate.
In one embodiment, silicic acid anhydride refers to use polytetrafluoroethylene (PTFE)（PTFE）Moditied processing.
In one embodiment, the polytetrafluoroethylene (PTFE) of carbon paper substrate layer（PTFE）Gross mass content is 4~6%.
In one embodiment, the surface of carbon paper substrate layer is covered with polytetrafluoroethylene ethylene layer, and while along hydrogen flowing side
To the increase of the distribution density of polytetrafluoroethylene ethylene layer property in gradient on carbon paper substrate layer.
In one embodiment, the strengthening membrane is polyester film, poly- naphthalene ester film or Kapton, strengthening membrane
Thickness be 0.05~0.1mm.
In one embodiment, one end of fuel cell pile is equipped with anode end plate, upper collector plate, upper head plate successively, separately
One end is equipped with cathode end plate, next part flowing plate, bottom plate successively, pile is formed overall package.
3rd aspect of the utility model, there is provided：
The control method of above-mentioned fuel cell pile, step include：Hydrogen runner is supplied hydrogen gas into, makes to send out at membrane electrode
Raw proton-exchange reaction, produces electric current；Meanwhile air and coolant are fed separately into air flow channel and cooling liquid flowing channel to electricity
Pond carries out air-cooled and air-cooled.
Beneficial effect
The beneficial effects of the utility model are that the utility model provides a kind of new fuel cell pack, its it is simple in structure and
Novelty, reduces process complexity and pile manufacture cost.Using integrating air-cooled with the bipolar plates of liquid cooling and have double
Weight refrigerating function, simplifies auxiliary coolant system, improves the uniformity of Temperature Distribution in pile, while be easily achieved low temperature bar
Quick cold start-up under part；The electric conductivity of bipolar plates can be improved by introducing graphene in bipolar plate material；Minus plate flow field
Runner use periodic gradually changing cross section, can lift three-phase reaction zone surface partial pressure of oxygen；Porous gas diffusion layer is in gas
There is the hydrophobic ability of gradient distribution on body flow direction, improve the stability of fuel cell pack；Using the moon of porous network structure
Pole enhancement layer has higher intensity, stronger electric conductivity, excellent corrosion resistance, improve the power of pile, stability and
Service life；In addition, upper and lower end plate uses light-duty, high intensity material, while high intensity is ensured, pile is alleviated
Weight, realizes the light-weight design of pile.
Brief description of the drawings
Fig. 1 is the structure chart of bipolar plates；
Fig. 2 is positive plate front（With hydrogen flow field）Structure chart；
Fig. 3 is positive plate reverse side（Plane）Structure chart；
Fig. 4 is minus plate front（With air flow field）Structure chart；
Fig. 5 is minus plate reverse side（With coolant flow field）Structure chart；
Fig. 6 is the structure diagram of fuel cell pile；
Fig. 7 is the front view of fuel cell pile；
Fig. 8 is the internal cross section figure of Fig. 6；
Fig. 9 is that the distance of pile parts pulls open schematic diagram；
Figure 10 is the anode surface schematic diagram of membrane electrode；
Figure 11 is the cathode plane schematic diagram of membrane electrode；
Figure 12 is the profile of one end of film electrolemma.
Wherein, 1, bipolar plates；2nd, membrane electrode；3rd, cathode enhancement layer；4；Upper collector plate；5th, next part flowing plate；6th, upper head plate；7、
Bottom plate；8th, gasket；9th, upper end gasket；10th, lower end gasket；11st, insulating sleeve；12nd, fastening screw；13rd, nut；14th, hydrogen
Gas import；15th, hydrogen outlet；16th, cooling liquid inlet；17th, cooling liquid outlet；18th, porous gas diffusion layer（GDL）；19th, it is catalyzed
The proton exchange membrane of agent coating（CCM）；20th, strengthening membrane；21st, hydrogen inlet；22nd, hydrogen outlet；23rd, positive plate；24th, cathode
Plate；25th, anode end plate；26th, cathode end plate；27th, tablet；28th, hydrogen runner；29th, air flow channel；30th, air flow channel groove；
31st, cooling liquid flowing channel；32, cooling liquid flowing channel groove.
Embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise " are based on orientation shown in the drawings or position relationship, merely to just
In description the utility model and simplified description, rather than indicate or imply that signified device or element must be with specifically square
Position, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, in claim and
The ordinal number used in specification such as " first ", " second ", " the 3rd " etc., for modifying claim rather than due to this
Body contain it is any it is preferential, formerly or a claim order before another claim or perform method and step when
Between order.But as just label using to distinguish such as element of the claim with specific names and another
Element with same names（Rather than belonging to for succession）, to distinguish the element of claim.Thus, define
One or more this feature can be expressed or be implicitly included to the feature of " first ", " second ".In the utility model
In description, " multiple " are meant that two or more, unless otherwise specifically defined.It should be understood that when one
When element is mentioned with another element " connection ", it can be connected directly with other elements or with the indirect phase of other elements
Even, and inserted with element between them.Unless there are clearly opposite explanation, otherwise term " comprising " and " having " is interpreted as table
State and include listed element, and non-excluded any other elements.Word " comprising " used herein, "comprising", " having " or
Its any other variant is intended to cover including for non-exclusionism.E.g., including list the technique of key element, method, article or set
It is standby to be not necessarily limited by those key elements, but can be not explicitly listed including other or belong to this technique, method, article or
The intrinsic key element of equipment.In the case of no special instruction, percentage described in the utility model refers to mass percent.
It is the installation diagram of proton exchange film fuel cell electric piling provided by the utility model as shown in Fig. 6~9,
Including integrate it is air-cooled with the bipolar plates 1 with dual-cooled of liquid cooling, membrane electrode 2, cathode enhancement layer 3, on
Collector plate 4, next part flowing plate 5, the upper head plate 6 of light high-intensity, the bottom plate 7 of light high-intensity, anode end plate 25, cathode end plate
26th, gasket 8, the upper end gasket 9 of insulation, the lower end gasket 10 of insulation, insulating sleeve 11, fastening screw 12, nut 13.
Its mounting means can be such as conventional proton exchange film fuel cell electric piling, mainly by membrane electrode 2 and bipolar plates 1
Stack gradually and form, cathode enhancement layer 3 is additionally provided between the cathode of film battery plate 2 and the cathode of bipolar plates 1, add by each stacking
Battery main body is formed afterwards, and more specifically installation is will to integrate air-cooled and liquid cooling to have the function of the double of dual-cooled
Pole plate 1, new membrane electrode 2, new cathode enhancement layer 3 stack gradually, and composition n pieces integrate air-cooled and liquid cooling
There is the stacked body of the new membrane electrode 2 of the bipolar plates 1 of dual-cooled, n pieces and the new cathode enhancement layer 3 of n-1 pieces, it is double
The sealing of hydrogen is realized between 2 anode-side of 1 anode surface of pole plate and membrane electrode by way of glue bonding, and on stacked body
End sets gradually new cathode enhancement layer 3, anode end portions monocell, upper collector plate 4, the upper end gasket 9 of insulation, light-duty high-strength
The upper head plate 6 of degree, it is exhausted that new cathode enhancement layer 3, cathode end plate 26, next part flowing plate 5, lower end are set gradually in stacked body lower end
The elastomeric pad of edge, the bottom plate 7 of light high-intensity, a kind of new fuel cell pack is assembled into eventually through fastener.Adopt
With the cathode enhancement layer of the porous network structure being made of graphite fibre, graphene, resin adhesive have higher intensity, compared with
Strong electric conductivity, on the one hand, be enough to support anode side gas diffusion layer, it is ensured that anode side gas diffusion layer is not by pre- inside pile
Clamp force is damaged by pressure, maintains the aqueous vapor passage of anode side gas diffusion layer, is realized that pile inner cathode side water, stablizing for gas transmit, is improved
The stability of pile and service life；On the other hand, it is possible to achieve the quick transmission of electronics, reduces pile interior contact resistance, improve
The generating efficiency of pile and service life.In addition, the cathode enhancement layer also has excellent corrosion resistance, that improves pile uses the longevity
Life, the mass content of the graphite fibre in cathode enhancement layer 3 is 90~95%, graphite fibre for PAN based graphite fiber or
Pitch-Based Graphite Fibers, the mass content of graphene is 1~5%, and resin adhesive is phenolic resin or epoxy resin.
Bipolar plate structure is as shown in Figure 1, be laminated by positive plate 23 and minus plate 24；The front of positive plate 23 is equipped with
Hydrogen flow field；The front of minus plate 24 is equipped with air flow channel 29, and air flow channel 29 is made of a plurality of air flow channel groove 30；
The back side of minus plate 24 is equipped with cooling liquid flowing channel 31, and cooling liquid flowing channel 31 is made of a plurality of cooling liquid flowing channel groove 32.
Anode end portions monocell is made of the positive plate side of bipolar plates 1 with new membrane electrode 2, and positive plate 23 is with stream
The sealing of hydrogen is realized between 1 anode-side of one side and membrane electrode of field by way of glue bonding.The cathode end plate 26
Formed by minus plate 24 is be bonded with tablet 27.Hydrogen inlet 14 and hydrogen outlet 15 are additionally provided with pile, for each positive plate
Hydrogen is fed in hydrogen flow field on 23.The overall fixation of pile is by upper end by insulating sleeve 11, fastening screw, nut 13
Realize and fix between plate 6 and bottom plate 7.
The upper head plate 6 of the light high-intensity and the base material of the bottom plate 7 of light high-intensity are carbon fiber board or glass
The PA66 of enhancing（Polyamide 66 or nylon66 fiber）Plastic plate, its molding mode are milling shaping, compression molding or injection molding.Institute
The upper collector plate 4 stated, the base material of next part flowing plate 5 are copper or nickel, and surface carries out silver-plated, gold-plated processing, silver-plated layer thickness successively
For 0.5-5 μm, plated thickness is 0.02-0.2 μm.Between upper collector plate 4 and upper head plate 6, in next part flowing plate 5 and bottom plate
Upper end gasket 9, lower end gasket 10 are further respectively had between 7.Gasket is silica gel pad, foamed silastic gasket or varicosity phenyl tetrafluoride pad
Piece.The upper and lower end of pile is provided with the elastomeric pad of insulation, on the one hand ensures the insulation performance of pile, on the other hand improves
The vibration resistance of pile, in case pile internal part occurs damage under the effects such as external vibration and impact or produces destruction.Electricity
The upper and lower end plate of heap uses light-duty, high intensity material, while high intensity is ensured, alleviates the weight of pile, realizes electricity
The light-weight design of heap.The structure of pile is simple and novel, reduces process complexity and pile manufacture cost, meanwhile, it is easy to
Realize the connection in series-parallel of pile.
The structure of the bipolar plates provided in the utility model as shown in Fig. 1~5, is laminated by positive plate 23 and minus plate 24
Bonding forms；The front of positive plate 23 is equipped with hydrogen flow field；The front of minus plate 24 is equipped with air flow channel 29, and air flow channel 29 is
It is made of a plurality of air flow channel groove 30；The back side of minus plate 24 is equipped with cooling liquid flowing channel 31, and cooling liquid flowing channel 31 is by more
Bar cooling liquid flowing channel groove 32 is formed.Integrate it is air-cooled with the bipolar plates 1 with dual-cooled of liquid cooling by
Positive plate 23 is Nian Jie with minus plate 24 to be formed, and the both ends of the positive plate 23 arrange the inlet and outlet of hydrogen and coolant, institute
The front for the positive plate 23 stated carries hydrogen flow field, and the reverse side of the positive plate 23 is plane, and the two of the minus plate 24
End arranges the inlet and outlet of hydrogen and coolant, and the front of the minus plate carries the air flow field of straight parallel type groove, institute
The reverse side for the minus plate stated carries the coolant flow field of straight parallel type groove, the straight parallel type groove in the coolant flow field
The direction of the straight parallel type groove of direction and air flow field is perpendicular, the projection portion in the straight parallel type groove of air flow field
Reverse side is the groove in coolant flow field so that cooling liquid flowing channel groove 32 is embedded in air flow channel groove 30；So that air flow channel
The cross section of groove 30 is in periodically change.The hydrogen flow field can be for parallel flow field or serpentine flow, flow field
Groove depth is 0.2~0.6mm, and the groove width in flow field is 0.4~1.8mm, and the ridge width in flow field is 0.5~2.0mm.Air flow channel groove 30
Groove depth can be 1.5mm~3.5mm, groove width is 1.5~3.5mm, and ridge width is 1.5~3.5mm.The cross section in coolant flow field
Shape formed with a line segment arc-shaped for a minor arc, the area of cross section is 0.5~5mm2, ridge width is 1.0~3.5mm.
The thickness of positive plate is 0.5~1.2mm, and the thickness of minus plate is 1.9~4.2mm.The positive plate, the material of minus plate are
The strong conductive material being made of graphite substrate, graphene, potting resin, its molding mode are engraving, rolling, punching press or mould
Molded, the graphite substrate is native graphite, Delanium or expanded graphite, the mass content of graphite substrate for 90~
95%, the mass content of the graphene is 1~5%, and the potting resin is thermosetting resin or thermoplastic resin, is filled
The mass content of resin is 4~5%.Integrate air-cooled has the function of dual-cooled with liquid cooling bipolar plates, simplifies auxiliary
Cooling system is helped, the heat produced in pile can shed in time, while the coolant circulated improves Temperature Distribution in pile
Uniformity, is conducive to improve stability and the service life of fuel cell pack.In addition, the circulating cooling in external heat pile can be passed through
Liquid, conveniently realizes the quick cold start-up under cryogenic conditions.In one embodiment, graphite fibre in cathode enhancement layer 3
Mass content is 90~95%, and graphite fibre is PAN based graphite fiber or Pitch-Based Graphite Fibers, and the quality of graphene contains
Measure as 1~5%, resin adhesive is phenolic resin or epoxy resin, its preparation method be formed after raw material is sufficiently mixed be in
The conductive support layer with higher-strength of porous net structure.It is made of graphite substrate, graphene, potting resin double
Plate material, its electric conductivity is stronger, improves the ability of bipolar plates conduction electronics, is conducive to be lifted the performance of fuel cell pack.
The runner in minus plate flow field uses periodic gradually changing cross section, when gas flows through air flow field, except the expansion by gas
Dissipate and enter gas diffusion layers, in addition, the cross section of fluid channel reduced is forced gases in produces speed on the direction of gas diffusion layers
Component is spent, the final partial pressure of oxygen for causing phase reaction area surface is lifted, therefore improves the performance of fuel cell pack.
For membrane electrode 2, centre is the proton exchange membrane 19 of catalyst coating, in the proton exchange membrane 19 of catalyst coating
Both sides be covered with porous gas diffusion layer 18, one end of the proton exchange membrane 19 of catalyst coating is additionally provided with strengthening membrane 20,
Porous gas diffusion layer 18 is by carbon paper substrate layer and microporous layers（MPL）It is laminated, the surface of carbon paper substrate layer is hydrophobic place
Reason, and while along hydrogen flow direction, the increase of hydrophobicity property in gradient, the polytetrafluoro of carbon paper substrate layer on carbon paper substrate layer
Ethene（PTFE）Gross mass content is 4~6%.Silicic acid anhydride described here can be in a conventional manner by carbon paper substrate
Layer is soaked in moditied processing in the solution dissolved with PTFE.Carbon paper substrate layer with the hydrophobic ability of gradient distribution causes porous gas
Diffusion layer has the hydrophobic ability of gradient distribution in gas flow direction, on the one hand, and it is stronger close to the hydrophobic ability of gas outlet end, have
The discharge for the water being beneficial to, ensures that water, gas flow smoothly, and avoids that water logging occurs, on the other hand, close to the hydrophobic energy of gas inlet end
Power is relatively weak, is conducive to extend the residence time of water, to ensure that input end proton exchange membrane has enough humidity, so as to protect
The ability of proton exchange membrane transmission proton is demonstrate,proved, therefore improves the stability of fuel cell pack.
One end of the proton exchange membrane 19 of catalyst coating is additionally provided with strengthening membrane 20, the strengthening membrane is polyester film,
Poly- naphthalene ester film or Kapton, the thickness of strengthening membrane is 0.05~0.1mm.Traditional membrane electrode passes through in CCM both sides
Strengthening membrane is respectively provided with to realize edge sealing, and the membrane electrode in this pile only sets strengthening membrane in the side of CCM, this avoid poly-
The phenomenon that polymer electrolyte membrane is subject to excessive mechanical pressure in the edge of strengthening membrane and is damaged.
Using the fuel cell pack of one 50 section of design and assembly of the new fuel cell pile of the utility model, warp
Test, its performance exceed international most advanced level.Under nominal current density, the rated power density of the pile is up to 552mW/
cm2, and no-voltage is decayed when continuous service 2 is small, when the pile service life is small more than 10000, and is realized under the conditions of -30 DEG C quick
Cold start-up.
Embodiment 1
Using the fuel cell pack of one 50 section of design and assembly of the new fuel cell pack of the utility model, and
The test of performance comparison is carried out under the conditions of equal ambient with conventional air-cooling fuel cell pile.The list of both fuel cell packs
The active area of battery is 150cm2, hydrogen flow field is parallel flow field, and the groove depth of hydrogen flow field is 0.3mm, and groove width is equal
For 1.0mm, it is 1.0mm that ridge is wide, and the groove width of air flow field is 2.5mm, and it is 2.0mm that ridge is wide, and coolant is water, coolant
The shape of flow field cross section forms arc-shaped for a minor arc with a line segment, and the area of cross section is 1.3mm2, ridge width is
1.5mm, cooling liquid flowing channel groove 32 is embedded in air flow channel groove 30 in the new fuel cell pack of the utility model so that
The cross section of air flow channel groove 30 is at minimum value in being 2.0mm at the air flow field groove depth maximum periodically changed
1.2mm, is to be mutually perpendicular between air flow channel groove 30 and cooling liquid flowing channel groove 32.
In the present embodiment, positive plate, the material of minus plate are by graphite substrate 91%, graphene 4%, E44 epoxy resin
4.5%th, the strong conductive material that 0.5% phthalic anhydride epoxy hardener is formed, its molding mode are punch forming, anode
The thickness of plate is 0.5~1.2mm, and the thickness of minus plate is 1.9~4.2mm.PAN based graphite in cathode enhancement layer 3 is fine
The mass content of dimension is 93%, and the mass content of graphene is 4%, and resin adhesive is E44 epoxy resin 2.5%, further includes 0.5%
Phthalic anhydride epoxy hardener.The surface polytetrafluoroethylene (PTFE) of carbon paper substrate layer（PTFE）Moditied processing, makes its surface hydrophobicity
Change, and while along hydrogen flow direction, the increase of hydrophobicity property in gradient, the polytetrafluoro of carbon paper substrate layer on carbon paper substrate layer
Ethene（PTFE）Gross mass content is 5%.
Reference examples 1
With embodiment 1 difference lies in：There was only air-cooled flow field in the bipolar plates of use, do not set coolant flow field.
Reference examples 2
With embodiment 2 difference lies in：The surface polytetrafluoroethylene (PTFE) of carbon paper substrate layer（PTFE）It is in moditied processing
Make its surface-hydrophobicized homogenization.
Reference examples 3
With the difference of embodiment 2：Cooling liquid flowing channel in bipolar plates is not embedded into air flow channel, is not formed in air flow channel
Periodically variable section.
Embodiment 2
Using the fuel cell pack of one 50 section of design and assembly of the new fuel cell pack of the utility model, and
The test of performance comparison is carried out under the conditions of equal ambient with conventional air-cooling fuel cell pile.The list of both fuel cell packs
The active area of battery is 190cm2, hydrogen flow field is parallel flow field, and the groove depth of hydrogen flow field is 0.5mm, and groove width is equal
For 0.5mm, it is 1.2mm that ridge is wide, and the groove width of air flow field is 3.5mm, and it is 1.5mm that ridge is wide, and coolant is water, coolant
The shape of flow field cross section forms arc-shaped for a minor arc with a line segment, and the area of cross section is 0.3mm2, ridge width is
1.2mm, cooling liquid flowing channel groove 32 is embedded in air flow channel groove 30 in the new fuel cell pack of the utility model so that
The cross section of air flow channel groove 30 is at minimum value in being 1.4mm at the air flow field groove depth maximum periodically changed
1.3mm, is to be mutually perpendicular between air flow channel groove 30 and cooling liquid flowing channel groove 32.
In the present embodiment, positive plate, the material of minus plate are by graphite substrate 91%, graphene 4%, E44 epoxy resin
4.5%th, the strong conductive material that 0.5% phthalic anhydride epoxy hardener is formed, its molding mode are punch forming, anode
The thickness of plate is 1.0mm, and the thickness of minus plate is 3.3mm.The quality of PAN based graphite fiber in cathode enhancement layer 3 contains
Measure as 93%, the mass content of graphene is 4%, and resin adhesive is E44 epoxy resin 2.5%, further includes 0.5% phthalic acid
Acid anhydride epoxy hardener.The surface polytetrafluoroethylene (PTFE) of carbon paper substrate layer（PTFE）Moditied processing, makes its surface-hydrophobicized, and while edge
Hydrogen flow direction, the increase of hydrophobicity property in gradient, the polytetrafluoroethylene (PTFE) of carbon paper substrate layer on carbon paper substrate layer（PTFE）
Gross mass content is 5%.
Embodiment 3
Using the fuel cell pack of one 50 section of design and assembly of the new fuel cell pack of the utility model, and
The test of performance comparison is carried out under the conditions of equal ambient with conventional air-cooling fuel cell pile.The list of both fuel cell packs
The active area of battery is 160cm2, hydrogen flow field is parallel flow field, and the groove depth of hydrogen flow field is 0.4mm, and groove width is equal
For 1.5mm, it is 0.7mm that ridge is wide, and the groove width of air flow field is 2.2mm, and it is 1.8mm that ridge is wide, and coolant is water, coolant
The shape of flow field cross section forms arc-shaped for a minor arc with a line segment, and the area of cross section is 0.8mm2, ridge width is
1.1mm, cooling liquid flowing channel groove 32 is embedded in air flow channel groove 30 in the new fuel cell pack of the utility model so that
The cross section of air flow channel groove 30 is at minimum value in being 1.2mm at the air flow field groove depth maximum periodically changed
0.6mm, is to be mutually perpendicular between air flow channel groove 30 and cooling liquid flowing channel groove 32.
In the present embodiment, positive plate, the material of minus plate are by graphite substrate 92%, graphene 3%, E44 epoxy resin
3.5%th, the strong conductive material that 1.5% phthalic anhydride epoxy hardener is formed, its molding mode are punch forming, anode
The thickness of plate is 0.7mm, and the thickness of minus plate is 2.2mm.The quality of PAN based graphite fiber in cathode enhancement layer 3 contains
Measure as 92%, the mass content of graphene is 3%, and resin adhesive is E44 epoxy resin 4.5%, further includes 0.5% phthalic acid
Acid anhydride epoxy hardener.The surface polytetrafluoroethylene (PTFE) of carbon paper substrate layer（PTFE）Moditied processing, makes its surface-hydrophobicized, and while edge
Hydrogen flow direction, the increase of hydrophobicity property in gradient, the polytetrafluoroethylene (PTFE) of carbon paper substrate layer on carbon paper substrate layer（PTFE）
Gross mass content is 5%.
Embodiment 4
Difference with embodiment 3 is by the ester modified E44 asphalt mixtures modified by epoxy resin of the hyperbranched poly of succinic acid end-blocking by epoxy resin
Fat.
Using the fuel cell pack of one 50 section of design and assembly of the new fuel cell pack of the utility model, and
The test of performance comparison is carried out under the conditions of equal ambient with conventional air-cooling fuel cell pile.The list of both fuel cell packs
The active area of battery is 160cm2, hydrogen flow field is parallel flow field, and the groove depth of hydrogen flow field is 0.4mm, and groove width is equal
For 1.5mm, it is 0.7mm that ridge is wide, and the groove width of air flow field is 2.2mm, and it is 1.8mm that ridge is wide, and coolant is water, coolant
The shape of flow field cross section forms arc-shaped for a minor arc with a line segment, and the area of cross section is 0.8mm2, ridge width is
1.1mm, cooling liquid flowing channel groove 32 is embedded in air flow channel groove 30 in the new fuel cell pack of the utility model so that
The cross section of air flow channel groove 30 is at minimum value in being 1.2mm at the air flow field groove depth maximum periodically changed
0.6mm, is to be mutually perpendicular between air flow channel groove 30 and cooling liquid flowing channel groove 32.
In the present embodiment, positive plate, the material of minus plate are by graphite substrate 92%, graphene 3%, E44 epoxy resin
3.5%th, the strong conductive material that 1.5% phthalic anhydride epoxy hardener is formed, its molding mode are punch forming, anode
The thickness of plate is 0.7mm, and the thickness of minus plate is 2.2mm.The quality of PAN based graphite fiber in cathode enhancement layer 3 contains
Measure as 92%, graphite fibre is PAN based graphite fiber or Pitch-Based Graphite Fibers, and the mass content of graphene is 3%, tree
Fat bonding agent is the ester modified E44 epoxy resin 4.5% of the hyperbranched poly of succinic acid end-blocking, further includes 0.5% phthalic anhydride
Epoxy hardener.The surface polytetrafluoroethylene (PTFE) of carbon paper substrate layer（PTFE）Moditied processing, makes its surface-hydrophobicized, and while along
Hydrogen flow direction, the increase of hydrophobicity property in gradient, the polytetrafluoroethylene (PTFE) of carbon paper substrate layer on carbon paper substrate layer（PTFE）Always
Mass content is 5%.Being modified the preparation method of E44 epoxy resin is：Take glycerine 40g, dihydromethyl propionic acid 35g, to toluene sulphur
Sour 2.4g is uniformly mixed, and after reacting 3h at 145~150 DEG C, is added succinic acid 12g, is kept the temperature to acid number and reach 6mgKOH/g
After cool down, discharge, obtain succinic acid end-blocking polyester improver.The polyester modification for again blocking E44 epoxy resin, succinic acid
Agent, according to weight ratio 5：0.5 be uniformly mixed be used as epobond epoxyn, according still further to, depressurize de-bubble after, according still further to ratio will gather
Acrylonitrile group graphite fibre, graphene, epoxy resin adhesive, curing agent are uniformly mixed, and are put into mould, 95 DEG C/
After 1.5h, the hot setting program of 130 DEG C/0.5h carry out curing process, obtain cathode and strengthen layer material.
Embodiment 5
Difference with embodiment 3 is PAN based graphite fiber in the cathode enhancement layer 3 used by carboxy-modified
Processing.
Using the fuel cell pack of one 50 section of design and assembly of the new fuel cell pack of the utility model, and
The test of performance comparison is carried out under the conditions of equal ambient with conventional air-cooling fuel cell pile.The list of both fuel cell packs
The active area of battery is 160cm2, hydrogen flow field is parallel flow field, and the groove depth of hydrogen flow field is 0.4mm, and groove width is equal
For 1.5mm, it is 0.7mm that ridge is wide, and the groove width of air flow field is 2.2mm, and it is 1.8mm that ridge is wide, and coolant is water, coolant
The shape of flow field cross section forms arc-shaped for a minor arc with a line segment, and the area of cross section is 0.8mm2, ridge width is
1.1mm, cooling liquid flowing channel groove 32 is embedded in air flow channel groove 30 in the new fuel cell pack of the utility model so that
The cross section of air flow channel groove 30 is at minimum value in being 1.2mm at the air flow field groove depth maximum periodically changed
0.6mm, is to be mutually perpendicular between air flow channel groove 30 and cooling liquid flowing channel groove 32.
In the present embodiment, positive plate, the material of minus plate are by graphite substrate 92%, graphene 3%, E44 epoxy resin
3.5%th, the strong conductive material that 1.5% phthalic anhydride epoxy hardener is formed, its molding mode are punch forming, anode
The thickness of plate is 0.7mm, and the thickness of minus plate is 2.2mm.Carboxy-modified PAN based graphite in cathode enhancement layer 3 is fine
The mass content of dimension is 92%, and the mass content of graphene is 3%, and resin adhesive is ester modified for the hyperbranched poly of succinic acid end-blocking
E44 epoxy resin 4.5%, further include 0.5% phthalic anhydride epoxy hardener, it is proportionally that PAN based graphite is fine
Dimension, graphene, epoxy resin adhesive, curing agent are uniformly mixed, and are put into mould, 95 DEG C/1.5h, 130 DEG C/0.5h
Hot setting program carry out curing process after, obtain cathode strengthen layer material.The surface polytetrafluoroethylene (PTFE) of carbon paper substrate layer
（PTFE）Moditied processing, makes its surface-hydrophobicized, and while along hydrogen flow direction, and hydrophobicity is in gradient on carbon paper substrate layer
The increase of property, the polytetrafluoroethylene (PTFE) of carbon paper substrate layer（PTFE）Gross mass content is 5%.Carboxy-modified PAN based graphite
The preparation method of fiber is：PAN based graphite fiber 20g is mixed with the first mixed liquor 45g, then in ultrasonication
Lower heating reflux reaction 4h, first mixed liquor refer to by volume 3：95% concentrated sulfuric acid and 65% concentrated nitric acid of 1 compounding
Mixed liquor, after reaction, PAN based graphite fiber is filtered out, then is washed with deionized, is dry, obtains sour modification
PAN based graphite fiber；Sour modified polyacrylonitrile-based graphite fibre 15g parts are mixed with the second mixed liquor 22g again, is heated up
Reaction 2h is carried out to 68 DEG C, second mixed liquor is mixed by the hydrogenperoxide steam generator of 95% concentrated sulfuric acid and 30wt%,
After reaction, PAN based graphite fiber is filtered out, then is washed with deionized, is dry, obtain carboxy-modified poly- third
Alkene itrile group graphite fibre.
Test condition is as follows：Hydrogen is dry gas, i.e., is not humidified, and 25 DEG C of room temperature, admission pressure 60Kpa, last row passes through electricity
Magnet valve carries out pulse discharge；The mode that forced convertion is carried out by using fan supplies air to cathode, and air inlet temperature is
25 DEG C of room temperature, relative humidity about 50%RH, in 600mA/cm2Current density under measure power density and during pile stable operation
Between.
By upper table as can be seen that bipolar plate structure provided by the utility model and fuel cell pile have preferable property
Energy and operation stability.Embodiment 1 can effectively realize raising operation compared with reference examples 1, by using water-cooling structure
Performance and stability, power density is not decreased obviously after running 2h, and operation stability is high；Embodiment 1 and reference examples 2
Contrast is as can be seen that the discharge for the water that the hydrophobic treatment carbon paper for employing gradient distribution can be beneficial to, the hydrophobic energy of close gas inlet end
Power is relatively weak, is conducive to extend the residence time of water, therefore improves the stability of fuel cell pack；Embodiment 1 and control
The contrast of example 3 can see, and the air flow channel for employing periodical section can be so that the partial pressure of oxygen on phase reaction area surface be able to
Lifting, therefore improve the performance of fuel cell pack；By embodiment 4 and the contrast of embodiment 3 as can be seen that employing succinic acid
The ester modified E44 epoxy resin of the hyperbranched poly of end-blocking can effectively improve the electric conductivity of E44 epoxy resin, transport battery
Line efficiency improves；Embodiment 5 and the contrast of embodiment 4 are as can be seen that employing carboxy-modified graphite fibre can preferably make
It forms the combination of carboxyl and hydroxyl between epoxy resin, makes the amalgamation of material more preferable, improves electric conductivity, makes battery
Run power higher.
Claims (10)
1. a kind of dual polar plates of proton exchange membrane fuel cell structure, it is characterised in that be by positive plate（23）And minus plate（24）
Lamination adhesive forms；Positive plate（23）Front be equipped with hydrogen flow field；Minus plate（24）Front be equipped with air flow channel（29）, it is empty
Flow channel（29）It is by a plurality of air flow channel groove（30）Formed；Minus plate（24）The back side be equipped with cooling liquid flowing channel（31）,
Cooling liquid flowing channel（31）It is by a plurality of cooling liquid flowing channel groove（32）Formed.
2. dual polar plates of proton exchange membrane fuel cell structure according to claim 1, it is characterised in that air flow channel groove
（30）With cooling liquid flowing channel groove（32）Between it is not parallel；Air flow channel groove（30）With cooling liquid flowing channel groove（32）Bipolar
It is to be mutually perpendicular between the projection of plane where plate；Cooling liquid flowing channel groove（32）Embedded air flow channel groove（30）In；So that
Air flow channel groove（30）Cross section in periodically change；The hydrogen flow field is parallel flow field or serpentine flow, is flowed
The groove depth of field is 0.2~0.6mm, and the groove width in flow field is 0.4~1.8mm, and the ridge width in flow field is 0.5~2.0mm.
3. dual polar plates of proton exchange membrane fuel cell structure according to claim 1, it is characterised in that air flow channel groove
（30）Groove depth be 1.5mm~3.5mm, groove width is 1.5~3.5mm, and ridge width is 1.5~3.5mm.
4. dual polar plates of proton exchange membrane fuel cell structure according to claim 1, it is characterised in that the coolant
The shape of the cross section of runner trench forms arc-shaped for a minor arc with a line segment, and the area of cross section is 0.5~5mm2, ridge
Width is 1.0~3.5mm.
5. dual polar plates of proton exchange membrane fuel cell structure according to claim 1, it is characterised in that positive plate（23）'s
Thickness is 0.5~1.2mm, and the thickness of minus plate is 1.9~4.2mm.
6. a kind of fuel cell pile, it is characterised in that be by membrane electrode（2）It is bipolar with Claims 1 to 5 any one of them
Plate（1）Stack gradually and form, in membrane electrode（2）Cathode and bipolar plates（1）Cathode between be additionally provided with cathode enhancement layer（3）.
7. fuel cell pile according to claim 6, it is characterised in that cathode enhancement layer（3）Hole shape for circle
Shape, rectangular or square, the area in hole is 0.25~1.0mm2, pitch of holes is 0.6~1.5mm；The membrane electrode（2）It is middle
It is the proton exchange membrane of catalyst coating（19）, in the proton exchange membrane of catalyst coating（19）Both sides be covered with porous gas
Body diffused layer（18）；The proton exchange membrane of catalyst coating（19）One end be additionally provided with strengthening membrane（20）.
8. fuel cell pile according to claim 6, it is characterised in that porous gas diffusion layer（18）By carbon paper substrate
Layer is laminated with microporous layers.
9. fuel cell pile according to claim 7, it is characterised in that the surface of carbon paper substrate layer is covered with polytetrafluoroethyl-ne
Alkene layer, and along hydrogen flow direction, the increase of the distribution density of polytetrafluoroethylene ethylene layer property in gradient on carbon paper substrate layer；Institute
The strengthening membrane stated is polyester film, poly- naphthalene ester film or Kapton, and the thickness of strengthening membrane is 0.05~0.1mm.
10. fuel cell pile according to claim 6, it is characterised in that one end of fuel cell pile is equipped with successively
Anode end plate（25）, upper collector plate（4）, upper head plate（6）, the other end is equipped with cathode end plate successively（26）, next part flowing plate（5）, under
End plate（7）, pile is formed overall package.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107546393A (en) * | 2017-09-28 | 2018-01-05 | 陈莉 | A kind of dual polar plates of proton exchange membrane fuel cell structure, fuel cell pile and its control method |
| CN109509891A (en) * | 2018-12-05 | 2019-03-22 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator part, individual fuel cells and fuel cell pile |
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| CN110752387A (en) * | 2019-10-30 | 2020-02-04 | 无锡威孚高科技集团股份有限公司 | Single cell of proton exchange membrane fuel cell and manufacturing method of electric pile thereof |
| CN111092240A (en) * | 2019-07-31 | 2020-05-01 | 浙江中合天空科技股份有限公司 | Metal bipolar plate flow field system of proton exchange membrane fuel cell |
| CN111106361A (en) * | 2019-12-23 | 2020-05-05 | 清华大学 | Fuel cell stack, bipolar plate and gas diffusion layer |
| CN111477903A (en) * | 2019-12-10 | 2020-07-31 | 张国胜 | Integral dislocation assembly method of bipolar plate, fuel cell stack comprising bipolar plate and power generation system |
| CN111987332A (en) * | 2019-05-21 | 2020-11-24 | 中国科学院大连化学物理研究所 | Heat dissipation and preheating combined fuel cell stack |
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| CN112531181A (en) * | 2019-09-18 | 2021-03-19 | 中国科学院苏州纳米技术与纳米仿生研究所 | Polymer material-based bipolar plate, single cell comprising same and galvanic pile |
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| CN107546393A (en) * | 2017-09-28 | 2018-01-05 | 陈莉 | A kind of dual polar plates of proton exchange membrane fuel cell structure, fuel cell pile and its control method |
| CN107546393B (en) * | 2017-09-28 | 2023-11-03 | 南京攀峰赛奥能源科技有限公司 | Proton exchange membrane fuel cell bipolar plate structure, fuel cell stack and control method thereof |
| CN110061269A (en) * | 2018-09-26 | 2019-07-26 | 南方科技大学 | Fuel cell pack internal current density and gas pressure intensity distributing on-line measurement device |
| CN110061269B (en) * | 2018-09-26 | 2021-03-02 | 南方科技大学 | Online measuring device for current density and gas pressure distribution in fuel cell stack |
| CN109509891B (en) * | 2018-12-05 | 2024-03-12 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator, unit fuel cell, and fuel cell stack |
| CN109524685A (en) * | 2018-12-05 | 2019-03-26 | 国家电投集团氢能科技发展有限公司 | Individual fuel cells and fuel cell pile |
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| CN109509893A (en) * | 2018-12-05 | 2019-03-22 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator part, individual fuel cells and fuel cell pile |
| CN109509891A (en) * | 2018-12-05 | 2019-03-22 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator part, individual fuel cells and fuel cell pile |
| CN109560305A (en) * | 2019-01-03 | 2019-04-02 | 浙江锋源氢能科技有限公司 | Metal double polar plates and processing method |
| CN109560305B (en) * | 2019-01-03 | 2024-02-09 | 浙江锋源氢能科技有限公司 | Metal bipolar plate and processing method |
| CN109986735A (en) * | 2019-04-30 | 2019-07-09 | 石家庄贝克密封科技股份有限公司 | A kind of hydrogen energy source battery heap gasket and its production mould, production technology |
| CN111987332A (en) * | 2019-05-21 | 2020-11-24 | 中国科学院大连化学物理研究所 | Heat dissipation and preheating combined fuel cell stack |
| CN111092240A (en) * | 2019-07-31 | 2020-05-01 | 浙江中合天空科技股份有限公司 | Metal bipolar plate flow field system of proton exchange membrane fuel cell |
| CN112490462A (en) * | 2019-08-21 | 2021-03-12 | 阮友兵 | Hydrogen fuel cell polar plate and hydrogen fuel cell group |
| CN112531181A (en) * | 2019-09-18 | 2021-03-19 | 中国科学院苏州纳米技术与纳米仿生研究所 | Polymer material-based bipolar plate, single cell comprising same and galvanic pile |
| CN110752387A (en) * | 2019-10-30 | 2020-02-04 | 无锡威孚高科技集团股份有限公司 | Single cell of proton exchange membrane fuel cell and manufacturing method of electric pile thereof |
| CN111477903A (en) * | 2019-12-10 | 2020-07-31 | 张国胜 | Integral dislocation assembly method of bipolar plate, fuel cell stack comprising bipolar plate and power generation system |
| CN111106361B (en) * | 2019-12-23 | 2021-03-30 | 清华大学 | Fuel cell stack, bipolar plate and gas diffusion layer |
| CN111106361A (en) * | 2019-12-23 | 2020-05-05 | 清华大学 | Fuel cell stack, bipolar plate and gas diffusion layer |
| CN113437326A (en) * | 2021-05-31 | 2021-09-24 | 北京氢沄新能源科技有限公司 | Proton exchange membrane fuel cell bipolar plate and fuel cell |
| CN113410501A (en) * | 2021-06-10 | 2021-09-17 | 黄冈格罗夫氢能汽车有限公司 | Hydrogen fuel cell stack |
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