CN101630747A - Metal bipolar plate of air-cooling type fuel cell stack - Google Patents
Metal bipolar plate of air-cooling type fuel cell stack Download PDFInfo
- Publication number
- CN101630747A CN101630747A CN200910183783A CN200910183783A CN101630747A CN 101630747 A CN101630747 A CN 101630747A CN 200910183783 A CN200910183783 A CN 200910183783A CN 200910183783 A CN200910183783 A CN 200910183783A CN 101630747 A CN101630747 A CN 101630747A
- Authority
- CN
- China
- Prior art keywords
- plate
- flow field
- air
- fuel cell
- cell stack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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 invention relates to an improvement to a metal bipolar plate of a proton-exchange membrane fuel cell. The metal bipolar plate is characterized in that a cathode plate and an anode plate which are stamped with flow fields are overlapped backwards, the peripheral surfaces of the cathode plate and the anode plate are sealed by welding or bonding, and back surfaces of the cathode and the anode form a cooling medium channel. The metal bipolar plate enables the flow fields at two sides of a single-polar plate to be utilized, ensures that a better cooling effect can be obtained under lower wind pressure by adding the cooling medium channel, can satisfy air-cooling requirements of a low wind-pressure electric pile without additionally increasing a cooling flow field and improve the volume power density of the electric pile.
Description
Technical field
The present invention is the improvement to dual polar plates of proton exchange membrane fuel cell, relates in particular to a kind of metal double polar plates that is used in particular for the Luftgekuhlte rotierende pile.
Background technology
Proton Exchange Membrane Fuel Cells, single-unit operating voltage only are 0.6～0.7V, obtain useful voltage, the more piece monocell must be connected.Connect two adjacent cell partition and be called bipolar plates, bipolar plates not only need in pile electrode that reactant is provided and between adjacent two electrodes conduction current, but also undertaking the effect that battery generates water and reaction heat of discharging.Good bipolar plates must have good conductivity (〉=10scm
-1), conductive coefficient (〉=20Wcm
-1K
-1) and air-tightness (＜10
-4Mbarcm
3s
-1Cm
-2).And inside battery is a sour environment, needs the corrosion resistance under acid aqueous vapor, oxygen and heat condition; Simultaneously, be to reduce the pile cost, improve power density, bipolar plates requires also that material is cheap, processing cost is low and the little lightweight characteristics of volume.
At present, bipolar plates mainly contains carbon/graphite bi-polar plate, composite dual-electrode plates and metal double polar plates.Metal double polar plates is because of having favorable conductive, thermal conduction characteristic, pliability and workability, comes into one's own and pays close attention to.Compare with composite material with graphite, there is not the air-tightness problem in metal, even and metallic plate is made and very thinly also can be guaranteed excellent mechanical intensity, thereby can greatly reduce the pile volume and weight, simultaneously because metal has high thermal, pile internal temperature gradient is little, also helps improving the uniformity of pile internal temperature.Therefore utilize sheet metal for example the corrosion resistant plate punch forming prepare bipolar plates, be to study focus in recent years.
Yet existing metal double polar plates, the coolant flow field is for mostly being serpentine flow, and for example Chinese patent CN 1416184A is described.The serpentine flow fluid resistance is fallen bigger, and air cooling pile, cooling wind pressure are less relatively, and fluid resistance is fallen greatly, and then gas flow is little, and cooling effect is not good, can not be used for the Luftgekuhlte rotierende pile substantially, so substantially all be to be used for making coolant with water.
The disclosed stamped metal bipolar plates of Chinese patent CN1787261, the bipolar plates positive and negative is symmetrically arranged with fuel gas channel, oxidizer gas channel, coolant guiding channel and bipolar plate flow field district respectively, the equal parallel flow field of its positive and negative.The disclosed metal double polar plates of Chinese patent CN101290994, its structure is filled with the water flow field stretching wire netting as heat extraction for be provided with the water frame towards between the metal anode unipolar plate that parallel flow field is arranged, metallic cathode unipolar plate in the water frame.Above-mentioned two patents have only been utilized metallic plate one side runner, and coolant flow field needs extra the interpolation, has increased cost, and also having increased assembled battery has thickness, cause volumetric power density to descend.And cooling agent and air flow channel adopt interior common conduit form, can't be applied to the air-cooled pile of fan cooled and air feed.
The disclosed thin metal dual-pole board of proton exchange film fuel battery of Chinese patent CN1996647, though between the yin, yang pole plate, omit coolant flow field, reduced package thickness, yet the cathode and anode flow field has only utilized a side runner, cathode flow field both as the reaction gas runner also as the cold gas runner, though can be used for the Luftgekuhlte rotierende pile, because shared flow field causes cooling effect not good.
Above-mentioned deficiency still has is worth improved place.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned prior art, provides a kind of and can utilize the two sides runner simultaneously, and refrigerating gas has independent runner, the metal bipolar plate of air-cooling type fuel cell stack of good cooling results.
The object of the invention realizes, the main improvement is the parallel longitudinal flow field positive plate (hydrogen unipolar plate) that utilizes punching press to have the flat shape flow field minus plate (oxygen unipolar plate) of lateral direction penetrating and serpentine flow or two ends to compile, form bipolar plates back to welding or bonding, two center-aisles are as the refrigerating gas runner, thereby increased independent coolant runner under the thickness condition not increasing, improve cooling effect, thereby gone for the Luftgekuhlte rotierende pile of low blast, realized the object of the invention.Specifically, metal bipolar plate of air-cooling type fuel cell stack of the present invention, the flat shape of the lateral direction penetrating flow field minus plate that comprises metal stamping, compile the parallel flow field positive plate with serpentine flow or two ends, it is characterized in that the yin, yang polar plate flow field is superimposed dorsad, side face is by welding or being bonded and sealed, and the two poles of the earth backboard closes face and constitutes coolant guiding channel.
Among the present invention
The stamped metal plate substrate is same as the prior art, can be stainless steel, titanium material and thin plates such as titanium alloy, aluminium and aluminium alloy.Base material thickness is usually about 0.1-1mm.The unipolar plate flow field degree of depth 0.1～4mm, width are 0.1～3mm.
The pole plate punching press forms the alternate concavo-convex width in flow field, can be wide, can be not wide yet, the present invention especially with employing make reaction gas flow field width degree greater than coolant flow field width structure for well, help the reacting gas that provides enough.
The flow field that punching press forms, its boss can be continuous, also can be interrupted.Wherein minus plate better adopts the parallel flow field of boss continuous structure, helps passing through fast of coolant, to improve cooling effect; Positive plate better adopts the boss intermittent configuration, helps increasing the response area in the closed flow.
Minus plate and positive plate are superimposed dorsad, a kind ofly more preferably make two runner direction quadratures on the flow field plate, promptly cloudy unipolar plate runner direction is vertical with positive unipolar plate runner direction, and the air flow channel that this structure forms is short, help passing through fast of cooling air, help improving cooling effect.
In addition, for reducing the decay resistance under metallic plate contact resistance and the raising battery context, unipolar plate is after punch forming, can adopt surface treatment mode, carrying out good electricity leads with the corrosion resistant coating and handles, technology such as chemical plating, plating and PVD, ion injection for example, carrying out in the surface plating has modified layer, for example noble metal, titanium nitride or titanium carbide, ambrose alloy phosphorus, CrxN layer etc.
Metal bipolar plate of air-cooling type fuel cell stack of the present invention, owing to adopt two pole plate combinations dorsad of punching press runner, spatial channel constitutes the coolant flow field channel dorsad, make flow field, unipolar plate two sides all obtain utilization, increased the coolant runner, make under low blast, still can obtain better cooling effect, can satisfy low blast pile air cooling requirement.Though the hydrogen gas side coolant flow channel is not communicated with, there is temperature gradient in pile inside, can form free convection, and therefore sealing flow field coolant still can also have certain radiating effect because of the temperature difference flows.Cloudy unipolar plate adopts the flat shape of punching press lateral direction penetrating flow field, and flow channel length is short, and flow passage resistance force of waterproof is little; Parallel longitudinal flow field boss intermittent configuration is compiled at positive plate serpentine flow or two ends, has increased the hydrogen reaction area, helps improving battery performance.Cloudy unipolar plate runner direction is vertical with positive unipolar plate runner direction, and coolant flow channel is short, helps improving cooling effect.Two pole plate monolithics are suppressed combination respectively, and hydrogen, oxygen unipolar plate flow field can be optimized respectively as required, more help the optimization of pile flow field structure.Do not need the volume place to increase coolant flow field, improved the volumetric power density of pile.
Below in conjunction with two exemplary embodiments; the present invention is further understood in exemplary illustration and help; but the embodiment detail only is for the present invention is described; do not represent the present invention to conceive whole technical schemes down; therefore should not be construed as limited overall technical solution, some are In the view of the technical staff, and the unsubstantiality that does not depart from the present invention's design increases and/or change; for example simple the change or replacement of technical characterictic to have same or similar technique effect all belongs to protection range of the present invention.
Description of drawings
Fig. 1 is a boss continuous anode plate Facad structure schematic diagram.
Fig. 2 is Figure 1A-A cross-sectional view.
Fig. 3 is the continuous minus plate Facad structure of a boss schematic diagram.
Fig. 4 is Fig. 3 A-A cross-sectional view.
Fig. 5-1 is the continuous bipolar plates combining structure of boss generalized section (Figure 1B-B position).
Fig. 5-2 is the continuous bipolar plates combining structure of boss generalized section (Fig. 1 C-C position).
Fig. 6 is interrupted positive plate Facad structure schematic diagram for boss.
Fig. 7 is Fig. 6 A-A cross-sectional view.
Fig. 8 is interrupted minus plate Facad structure schematic diagram for boss.
Fig. 9 is Fig. 8 A-A cross-sectional view.
Figure 10 is that continuous minus plate of boss and boss are interrupted positive plate package assembly schematic diagram.
Embodiment
Embodiment 1: referring to Fig. 1-5, with bipolar plates 0.1mm stainless sheet steel, punching press has the continuous parallel flow field minus plate 1 of wide boss respectively, flow field degree of depth 1mm, width 1mm, with the continuous serpentine flow positive plate 2 of wide boss (degree of depth, width the same), carry out electroplate by electro-plating method respectively, combination is welded in both flow fields dorsad.Zone A constitutes the reaction air flow channel, and area B constitutes the hydrogen runner, and zone C and D constitute the cooling air runner.
Embodiment 2: referring to Fig. 3,4,6,7,10, with the bipolar plates stainless sheet steel, punching press has the continuous parallel flow field minus plate 1 of wide boss respectively, serpentine flow positive plate 4 with wide boss interruption, form titanium nitride layer by the PVD method on the surface respectively, combination is welded in both flow fields dorsad.Area E constitutes the reaction air flow channel, and regional F constitutes the hydrogen runner, and regional G and H constitute the cooling air runner.
In addition, cloudy unipolar plate also can strike out boss intermittent configuration (Fig. 8,9), with the serpentine flow positive plate 4 that boss is interrupted, welding combination dorsad.Though its coolant flow channel is discontinuous, increased reaction gas runner area, also can improve cooling effect.
To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; for example runner width changes; the runner variation; the pole plate base material changes; or the like unsubstantiality change, can be employed equally, can both realize and basic identical function of the foregoing description and effect; launch for example no longer one by one to describe in detail, all belong to this patent protection range.
Claims (7)
1, metal bipolar plate of air-cooling type fuel cell stack, the flat shape of the lateral direction penetrating flow field minus plate that comprises metal stamping, compile the parallel flow field positive plate with serpentine flow or two ends, it is characterized in that the yin, yang polar plate flow field is superimposed dorsad, side face is by welding or being bonded and sealed, and the two poles of the earth backboard closes face and constitutes coolant guiding channel.
2, according to the described metal bipolar plate of air-cooling type fuel cell stack of claim 1, it is characterized in that the unipolar plate flow field degree of depth 0.1～4mm, width is 0.1～3mm.
3,, it is characterized in that the reactive flowfield width is greater than coolant flow field width on the pole plate according to claim 1 or 2 described metal bipolar plate of air-cooling type fuel cell stack.
4, according to claim 1 or 2 described metal bipolar plate of air-cooling type fuel cell stack, it is characterized in that minus plate is the continuous parallel flow field of boss, positive plate is boss intermittent configuration flow field.
5,, it is characterized in that minus plate runner direction is vertical with positive plate plate runner direction when superimposed according to claim 1 or 2 described metal bipolar plate of air-cooling type fuel cell stack.
6,, it is characterized in that the unipolar plate punch forming after surface conductivity and corrosion resistance modification, superimposed again combination according to claim 1 or 2 described metal bipolar plate of air-cooling type fuel cell stack.
7,, it is characterized in that two metal polar plates are by the welding combination according to claim 1 or 2 described metal bipolar plate of air-cooling type fuel cell stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910183783A CN101630747A (en) | 2009-08-09 | 2009-08-09 | Metal bipolar plate of air-cooling type fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910183783A CN101630747A (en) | 2009-08-09 | 2009-08-09 | Metal bipolar plate of air-cooling type fuel cell stack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101630747A true CN101630747A (en) | 2010-01-20 |
Family
ID=41575763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910183783A Pending CN101630747A (en) | 2009-08-09 | 2009-08-09 | Metal bipolar plate of air-cooling type fuel cell stack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101630747A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237531A (en) * | 2010-04-22 | 2011-11-09 | 通用汽车环球科技运作有限责任公司 | Formed plate assembly for PEM fuel cell |
| CN102237529A (en) * | 2010-04-22 | 2011-11-09 | 通用汽车环球科技运作有限责任公司 | Formed plate assembly for pem fuel cell |
| CN104779406A (en) * | 2015-04-23 | 2015-07-15 | 常州联德电子有限公司 | Forming process of metal connector of solid oxide fuel battery |
| CN107069060A (en) * | 2016-02-05 | 2017-08-18 | 丰田自动车株式会社 | The manufacture method of cell of fuel cell and cell of fuel cell |
| CN108963294A (en) * | 2018-07-20 | 2018-12-07 | 大连交通大学 | A kind of proton exchange membrane fuel cell metal graphite composite bipolar plate preparation method |
| CN109449456A (en) * | 2017-08-21 | 2019-03-08 | 上海电气集团股份有限公司 | Bipolar plates, Proton Exchange Membrane Fuel Cells and dual-electrode plates preparation method |
| CN109473681A (en) * | 2018-12-13 | 2019-03-15 | 新源动力股份有限公司 | A kind of fuel battery double plates with intermittent configuration |
| CN112436163A (en) * | 2020-12-11 | 2021-03-02 | 航天氢能(上海)科技有限公司 | Metal bipolar plate and cathode closed air-cooled electric pile of fuel cell |
| CN114373956A (en) * | 2021-12-24 | 2022-04-19 | 佛山仙湖实验室 | Polar plate convex runner structure, battery metal polar plate and hydrogen fuel cell bipolar plate |
| CN114792818A (en) * | 2022-04-28 | 2022-07-26 | 江苏大学 | Cooling open type fuel cell, cooling system and cooling method |
| CN115064722A (en) * | 2022-06-30 | 2022-09-16 | 华中科技大学 | Radiating metal stamping bipolar plate of air-cooled proton exchange membrane fuel cell |
-
2009
- 2009-08-09 CN CN200910183783A patent/CN101630747A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10516167B2 (en) | 2010-04-22 | 2019-12-24 | GM Global Technology Operations LLC | Formed plate assembly for PEM fuel cell |
| CN102237529A (en) * | 2010-04-22 | 2011-11-09 | 通用汽车环球科技运作有限责任公司 | Formed plate assembly for pem fuel cell |
| CN102237531B (en) * | 2010-04-22 | 2015-01-28 | 通用汽车环球科技运作有限责任公司 | Formed plate assembly for PEM fuel cell |
| US9083008B2 (en) | 2010-04-22 | 2015-07-14 | GM Global Technology Operations LLC | Formed plate assembly for PEM fuel cell |
| CN102237529B (en) * | 2010-04-22 | 2016-05-18 | 通用汽车环球科技运作有限责任公司 | The forming board assembly of PEM fuel cell |
| CN102237531A (en) * | 2010-04-22 | 2011-11-09 | 通用汽车环球科技运作有限责任公司 | Formed plate assembly for PEM fuel cell |
| CN104779406A (en) * | 2015-04-23 | 2015-07-15 | 常州联德电子有限公司 | Forming process of metal connector of solid oxide fuel battery |
| CN107069060A (en) * | 2016-02-05 | 2017-08-18 | 丰田自动车株式会社 | The manufacture method of cell of fuel cell and cell of fuel cell |
| CN107069060B (en) * | 2016-02-05 | 2020-09-01 | 丰田自动车株式会社 | Fuel cell and method for manufacturing fuel cell |
| CN109449456A (en) * | 2017-08-21 | 2019-03-08 | 上海电气集团股份有限公司 | Bipolar plates, Proton Exchange Membrane Fuel Cells and dual-electrode plates preparation method |
| CN108963294A (en) * | 2018-07-20 | 2018-12-07 | 大连交通大学 | A kind of proton exchange membrane fuel cell metal graphite composite bipolar plate preparation method |
| CN109473681A (en) * | 2018-12-13 | 2019-03-15 | 新源动力股份有限公司 | A kind of fuel battery double plates with intermittent configuration |
| CN109473681B (en) * | 2018-12-13 | 2024-04-26 | 新源动力股份有限公司 | Fuel cell bipolar plate with intermittent structure |
| CN112436163A (en) * | 2020-12-11 | 2021-03-02 | 航天氢能(上海)科技有限公司 | Metal bipolar plate and cathode closed air-cooled electric pile of fuel cell |
| CN114373956A (en) * | 2021-12-24 | 2022-04-19 | 佛山仙湖实验室 | Polar plate convex runner structure, battery metal polar plate and hydrogen fuel cell bipolar plate |
| CN114792818A (en) * | 2022-04-28 | 2022-07-26 | 江苏大学 | Cooling open type fuel cell, cooling system and cooling method |
| CN115064722A (en) * | 2022-06-30 | 2022-09-16 | 华中科技大学 | Radiating metal stamping bipolar plate of air-cooled proton exchange membrane fuel cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101630747A (en) | Metal bipolar plate of air-cooling type fuel cell stack | |
| CN106848362B (en) | The light-duty pile of integrated metal-graphite composite bipolar plate fuel battery and its manufacturing method | |
| CN201498551U (en) | Metal bipolar plate of air cooling type fuel cell stack | |
| CN103746123B (en) | Dual polar plates of proton exchange membrane fuel cell and the pile of composition thereof | |
| CN104157895B (en) | The light-duty pile of polymer dielectric film fuel cell and manufacture method thereof | |
| CN108899562A (en) | A kind of fuel battery double plates | |
| CN109904479A (en) | A kind of composite anti-corrosion fuel battery metal double polar plate and preparation method thereof | |
| CN112838232B (en) | Full-through-hole metal fiber sintered body fuel cell bipolar plate and fuel cell stack | |
| CN110061260A (en) | A kind of proton exchange fuel cell | |
| CN111952652A (en) | Air cooling fuel cell with elasticity and thermal-insulated end plate mechanism | |
| EP2492997A1 (en) | Bipolar plate for fuel cell | |
| CN209929408U (en) | Metal plate fuel cell single cell structure with long service life and reliability and electric pile | |
| CN110571450A (en) | Air-cooled fuel cell stack with strong heat dissipation effect | |
| CN110085887A (en) | A kind of fuel battery double plates | |
| CN105322184B (en) | The preparation process of used in proton exchange membrane fuel cell metal double polar plates | |
| CN210576257U (en) | Air cooling fuel cell with elasticity and thermal-insulated end plate mechanism | |
| CN210467988U (en) | Air-cooled fuel cell metal bipolar plate | |
| CN209709094U (en) | A kind of proton exchange fuel cell | |
| CN209374563U (en) | A kind of fuel battery metal double polar plate | |
| CN209357835U (en) | A kind of fuel battery metal double polar plate | |
| CN215220771U (en) | Metal bipolar plate structure | |
| CN114657583A (en) | Bipolar plate and water electrolytic tank | |
| CN211320216U (en) | Air-cooled fuel cell stack with strong heat dissipation effect | |
| CN212182458U (en) | Proton exchange membrane fuel cell, electric pile and flow field plate composite system | |
| CN209947951U (en) | Flow field structure bipolar plate, monocell, green energy vehicle, electronic equipment, mobile communication terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100120 |