CN101183723A - Metal sheet profiled proton exchange membrane fuel cell bipolar plate - Google Patents
Metal sheet profiled proton exchange membrane fuel cell bipolar plate Download PDFInfo
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- CN101183723A CN101183723A CNA2007101721483A CN200710172148A CN101183723A CN 101183723 A CN101183723 A CN 101183723A CN A2007101721483 A CNA2007101721483 A CN A2007101721483A CN 200710172148 A CN200710172148 A CN 200710172148A CN 101183723 A CN101183723 A CN 101183723A
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- flow field
- fuel cell
- exchange membrane
- proton exchange
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a fuel-cell bipolar plate of proton exchange membrane by metal veneer forming, belonging to a fuel cell technical field, comprising two same flow-field veneers. The invention is characterized in that: the two same flow-field veneers are respectively used as an anode and a cathode, and the two same flow-field veneers are connected together by a peripheral interface and a middle flow-field interface and welded together via symmetrical joint; three inlets and three outlets are arranged on each flow-field veneer and respectively are a fuel gas inlet, a fuel gas outlet, an oxidant inlet, an oxidant outlet, a coolant inlet and a coolant outlet; a plurality of rounded locating holes are respectively arranged at the middle of the two sides. The invention has the advantages of simpler structure for only two same metal veneers, lower manufacturing cost for only a forming die, using special design of only adding sealing rings to a couple of inlet and outlet to the inlets and the outlets of the reaction gases and reducing use time of the sealing rings.
Description
Technical field
The present invention relates to the bipolar plates in a kind of fuel cell technology field, especially a kind of metal sheet profiled dual polar plates of proton exchange membrane fuel cell.
Background technology
Along with the development of modern civilization, people recognize that gradually traditional energy utilization patterns have two big disadvantages.The one, be stored in and just can be transformed into mechanical or electrical energy after chemical energy in the fuel must at first be transformed into heat energy, be subjected to the restriction of Carnot cycle and modern material, have only 33～35% in the efficient that the machine end is obtained, energy over half has lost in vain; The 2nd, traditional energy utilization patterns give today the mankind living environment caused the pollution of waste water,waste gas and industrial residue, used heat and the noise of flood tide.Fuel cell be known as after waterpower, firepower, nuclear energy the 4th generation Blast Furnace Top Gas Recovery Turbine Unit (TRT) and the power set of replace internal combustion engines.International energy circle prediction, fuel cell are 21 century one of the most attractive electricity-generating methods.Its basic principle is that the combustion by fuel gas (hydrogen) and oxidant (oxygen) directly is converted into electric energy with chemical energy constantly, is a kind of cleaning, efficient, reproducible alternative energy source Blast Furnace Top Gas Recovery Turbine Unit (TRT).Under the severe day by day background of current energy problem, fuel cell becomes the research direction that countries in the world are given priority to just gradually.And Proton Exchange Membrane Fuel Cells (PEMFC) is good owing to its conversion efficiency height, controllability, advantages such as operational environment close friend are suitable for realizing the miniaturization of products, and are suitable for as the mobile energy, have a wide range of applications, thereby become focus of greatest concern in the research field.
The structure of Proton Exchange Membrane Fuel Cells mainly is made up of bipolar plates, proton exchange membrane, catalyst etc.; Wherein membrane electrode assembly (MEA) is the core of fuel cell, and its manufacturing cost accounts for branch and is clipped to 43% of total cost; And bipolar plates is the important component part of battery, plays the effect of collected current, gas distribution and water management, heat management in fuel cell, and its weight accounts for more than 80% of fuel cell pile total weight, and manufacturing cost accounts for about 30% of total cost.The proton exchange membrane bipolar plates adopts graphite material usually at present, the technology comparative maturity, but because the machining property of graphite material is relatively poor, having limited the raising of pole plate production efficiency, can't realize producing in enormous quantities, be difficult to reduce production costs significantly; Because the fragility of graphite pole plate is bigger, also be not suitable for environment simultaneously badly such as using under the vehicle-mounted operating mode.Therefore, this also is the bottleneck problem that current graphite pole plate can't be realized the large-scale commercial applications use.Than graphite material, sheet metal is because its favorable mechanical processing characteristics, splendid conductivity, thermal conductivity and compactness, realize the sheet of bipolar plates easily, greatly reduce the volume and weight of bipolar plates, and cheap, realize large-scale mass production easily, will become the preferred material that reduces the fuel battery pole board manufacturing cost.
Find by prior art documents, the Chinese patent publication number is CN1416184A, proposed " metal compound bipolar plate of a proton exchanging film fuel battery ", will partly constitute one with metal edge frame with the corresponding strip-shaped grooves part of three-in-one electrode by bonding or seam.This patent adopts act as a fuel the respectively anode and cathode of battery of two metallic plates, is connected with metal edge frame, forms bipolar plates, is actually the bipolar plates of three metallic plates formation.Adopt the form of three metallic plates,, will increase assembly process simultaneously, may bring extra rigging error though easier realization on the structure can increase the weight of bipolar plates.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of metal sheet profiled dual polar plates of proton exchange membrane fuel cell is provided.The present invention is in light weight, and volume is little, and production process is simple, and is with low cost, realizes easily producing in enormous quantities.Bipolar plates of the present invention only need adopt two metallic plates, just can satisfy fuel cell needed three and advance three and go out, and promptly fuel gas is imported and exported, and oxidant is imported and exported, and cooling agent is imported and exported; Reacting gas is imported and exported and is adopted particular design, has reduced the access times of sealing ring.
The present invention is achieved through the following technical solutions, the present invention includes: two identical flow field veneers, described two flow field veneers are respectively as anode and negative electrode, and they are by contact-making surface and middle flow field contact-making surface are connected all around.Be fitted and connected by welding symmetry between two flow field veneers.Described two flow field veneer sizes are identical with shape.Be equipped with three imports on each flow field veneer, three outlets are respectively: fuel gas inlets, fuel gas outlet, oxidant inlet, oxidant outlet, cooling liquid inlet, cooling liquid outlet, the centre on two limit also is respectively equipped with circular location hole.
Described flow field veneer is a rectangle, on one side it is the reactant gas flow zone, is the interdigitated flow field of straight parallel shape, by (the shaping degree of depth is that 0.4mm is to 1.0mm) after the drawing, Yi Bian form serpentine flow path in addition naturally, is the flow of cooling water zone.Be to reduce interdigitated flow field pressure will, improve reflection efficient, have at flow field ridge place some grooves (width be 2mm to 5mm, the degree of depth is that 0.2mm is to 0.5mm).Be provided with the sedimentation sealed frame in fuel gas inlets, fuel gas outlet, the sedimentation degree of depth is identical with gash depth.Be equipped with the step composite construction at cooling liquid inlet and cooling liquid outlet, also serve as the effect of sedimentation sealed frame.The sedimentation degree of depth at four angles is identical with gash depth, and the sedimentation degree of depth of the mid portion of four edges is less than gash depth (degree of depth is that 0.2mm is to 0.5mm), to form the access way of cooling fluid.
Described flow field veneer is to make one by process for stamping and forming, and connects into bipolar plates by welding procedure.Two flow field veneers lean against privately by the precise laser welding and fit together according to the strict mode of aliging of raised platforms.
Described flow field veneer adopts metallic sheet stock, specifically is stainless steel.
Described flow field veneer, its thickness are 0.1mm～0.3mm.
Compare with other fuel battery metal double polar plate, the present invention only needs two identical metal flow field veneers, just can satisfy fuel cell needed three and advance three and go out, be that fuel gas is imported and exported, oxidant is imported and exported, and cooling agent is imported and exported, and the weight of fuel cell has reduced 20%-30%.Reacting gas is imported and exported and is adopted particular design, and each flow field veneer has all reduced the use of once sealing circle, has improved sealing property.
Description of drawings
Fig. 1 is a bipolar plates overall structure schematic diagram of the present invention.
Fig. 2 is a metal flow field veneer front schematic view of the present invention.
Fig. 3 is bipolar plates generalized section of the present invention (being the A-A face schematic diagram of Fig. 1).
Fig. 4 is a sealing area schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Be illustrated in figure 1 as the overall structure schematic diagram, comprise two identical flow field veneers 1 and flow field veneer 2.Whole electrode plate structure is symmetry almost completely, can be under a mold generates through a drawing, respectively as the negative electrode and the anode of bipolar plates.
As shown in Figure 2, be the front view of flow field veneer, the zone line of flow field veneer is a reactive flowfield 3, employing be the interdigital flow field of improved straight shape runner, its flow channel cross-section is rectangle (can do suitable process modifications for being fit to Sheet Metal Forming Technology production) substantially.Round reactive flowfield 3 around be provided with sealed groove 4.Consider the welding applying characteristic of two flow field veneers, the degree of depth of sealed groove 4 is consistent with the gash depth of reactive flowfield 3.Veneer below, flow field is provided with oxidant inlet 5, fuel gas inlets 6, and veneer top in flow field is provided with oxidant outlet 7, fuel gas outlet 8, and the position of import and outlet is designed for diagonal.Two to advance scene 2 be not to be completely fixed for this, and when this metal veneer was negative electrode, 5 was oxidant inlet, and 7 is oxidant outlet, and when this metal veneer was anode, 5 was fuel gas inlets, and 7 is the fuel gas outlet.This design can reduce the access times of sealing ring, improves sealing property.Be provided with the location hole 11 that coolant inlet 9 and 10, two limits of coolant outlet are provided with two circles in the middle of the both sides of flow field veneer, its radial design is 2mm～4mm.To for the pressure that reduces interdigitated flow field, have some grooves 12 at flow field ridge place.
Be illustrated in figure 3 as the bipolar plates profile, two identical flow field veneers 1 and flow field veneer 2 lean against privately and fit according to the mode of the strict alignment of runner, thereby form oxidant flow channel 13, fuel gas runner 14, coolant flow passages 15 respectively in both sides and centre.The reactive flowfield of two identical flow field veneers 1 and flow field veneer 2 is interdigitated flow field, and oxidant flow channel 13 wherein and fuel gas runner 14 are discrete straight parallel runner, and middle coolant flow passages 15 then is continuous serpentine flow path.So both guarantee the both sides reactive flowfield, satisfied middle cooling liquid flowing channel designing requirement again.
As shown in Figure 4, in fuel gas inlets 6, fuel gas outlet 8 is equipped with gas sedimentation sealed frame 16, and its sedimentation degree of depth is identical with the gash depth of reactive flowfield 3.The width design consideration bipolar plates size of gas sedimentation sealed frame 16 decides, and the gas sedimentation sealed frame 16 of two identical flow field veneers 1 and flow field veneer 2 welding is mutually fitted.Sealing ring can be put in frame 16 the insides, make fuel gas and oxidant gas isolated mutually, after welding was fitted, oxidant inlet 5 overlapped with fuel inlet 6, oxidant inlet 6 overlaps with fuel inlet 8, so oxidant inlet 5 does not need to arrange sealing ring with oxidant inlet 7.
Fuel cell is a kind of energy conversion device, and is different with conventional batteries, and its fuel and oxidant are not to be stored in the battery, but are stored in the holding vessel of outside batteries.When it is worked, need incessantly to inside battery input fuel and oxidant.
As shown in Figure 1, for the present invention, two identical flow field veneers 1 and 2 are formed a bipolar plates,, in practical work process, do not have the space between the bipolar plates, promptly be close between two identical flow field veneers 1 and 2, here needs in order to show.
As shown in Figure 2, when work, oxidant is flowed into by the inlet 5 of flow field veneer, arrive the conversion zone of flow field veneer, on the other hand, fuel flows into from the inlet 6 of another piece flow field veneer, arrives the conversion zone of flow field veneer, like this, electrolysis material in fuel and oxidant and the membrane electrode assembly, electrochemical reaction takes place in the catalyst contact, generate electronics, produce electric current.Excess oxidant and fuel flow out from 7,8 respectively.9,10 are respectively the entrance and exit of cooling agent, and cooling agent flows into from 9, the coolant flow passages between two identical flow field veneers 1 and 2 as shown in Figure 1 flow (coolant flow passages as Fig. 3 15 shown in), play the effect of cooling.
Claims (9)
1. metal sheet profiled dual polar plates of proton exchange membrane fuel cell, comprise: two identical flow field veneers, respectively as anode and negative electrode, it is characterized in that: two identical flow field veneers are by contact-making surface and middle flow field contact-making surface are connected all around, be fitted and connected by welding symmetry between two flow field veneers, be equipped with three imports and three outlets on each flow field veneer, be respectively: fuel gas inlets, the fuel gas outlet, oxidant inlet, oxidant outlet, cooling liquid inlet, cooling liquid outlet, the centre on two limit also is respectively equipped with circular location hole.
2. metal sheet profiled dual polar plates of proton exchange membrane fuel cell according to claim 1, it is characterized in that: described flow field veneer, it is the reactant gas flow zone on one side, be the interdigitated flow field of straight parallel shape, be serpentine flow path on one side in addition, be the flow of cooling water zone, the place has some grooves at the flow field ridge, be provided with the sedimentation sealed frame in fuel gas inlets, fuel gas outlet, the sedimentation degree of depth is identical with gash depth.
3. metal sheet profiled dual polar plates of proton exchange membrane fuel cell according to claim 1 and 2, it is characterized in that: described flow field veneer is a rectangle, the sedimentation degree of depth at its four angles is identical with gash depth, and the sedimentation degree of depth of the mid portion of four edges is less than gash depth, to form the access way of cooling fluid.
4. metal sheet profiled dual polar plates of proton exchange membrane fuel cell according to claim 3 is characterized in that: described groove, its width be 2mm to 5mm, the degree of depth is that 0.2mm is to 0.5mm.
5. metal sheet profiled dual polar plates of proton exchange membrane fuel cell according to claim 1 is characterized in that: described cooling liquid inlet and cooling liquid outlet are equipped with the step composite construction.
6. metal sheet profiled dual polar plates of proton exchange membrane fuel cell according to claim 1 and 2 is characterized in that: described two flow field veneers are to lean against privately by laser welding to fit together according to the strict mode of aliging of raised platforms.
7. metal sheet profiled dual polar plates of proton exchange membrane fuel cell according to claim 1 and 2 is characterized in that: described two flow field veneers, its thickness is 0.1mm～0.3mm.
8. metal sheet profiled dual polar plates of proton exchange membrane fuel cell according to claim 1 and 2 is characterized in that: described two flow field veneers, its material is metallic sheet stock.
9. metal sheet profiled dual polar plates of proton exchange membrane fuel cell according to claim 1 is characterized in that: described flow field veneer, position of three imports and three outlets is the diagonal setting on it.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710172148A CN100595957C (en) | 2007-12-13 | 2007-12-13 | Metal sheet profiled proton exchange membrane fuel cell bipolar plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710172148A CN100595957C (en) | 2007-12-13 | 2007-12-13 | Metal sheet profiled proton exchange membrane fuel cell bipolar plate |
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| CN101183723A true CN101183723A (en) | 2008-05-21 |
| CN100595957C CN100595957C (en) | 2010-03-24 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306813A (en) * | 2011-08-12 | 2012-01-04 | 上海交通大学 | Fuel cell bipolar plate prepared through metal sheet stamping and forming, and application thereof |
| CN102699533A (en) * | 2012-06-13 | 2012-10-03 | 上海交通大学 | Self-adaptive laser welding fixture for ultra-thin metal bipolar plate of fuel cell |
| CN102969513A (en) * | 2012-12-03 | 2013-03-13 | 上海交通大学 | Large-area metal bipolar plate for automobile fuel cell |
| CN104733744A (en) * | 2015-04-14 | 2015-06-24 | 中国东方电气集团有限公司 | Fuel cell metal polar plate, fuel cell metal bipolar plate and fuel cell |
| CN104795574A (en) * | 2015-04-14 | 2015-07-22 | 中国东方电气集团有限公司 | Metal bipolar plates of fuel cell and fuel cell |
| CN104900894A (en) * | 2015-04-14 | 2015-09-09 | 中国东方电气集团有限公司 | Metal pole plate of fuel battery, metal bipolar plate of fuel battery and fuel battery |
| CN104900886A (en) * | 2015-05-27 | 2015-09-09 | 江苏绿遥燃料电池系统制造有限公司 | Metal bipolar plate with convection type cooling liquid flow field |
| CN105027340A (en) * | 2013-03-13 | 2015-11-04 | 大众汽车有限公司 | Bipolar plate for a fuel cell, fuel cell and method for producing the bipolar plate |
| CN105186015A (en) * | 2015-07-17 | 2015-12-23 | 江苏绿遥燃料电池系统制造有限公司 | Bridging type metal bipolar plate |
| CN107634239A (en) * | 2017-09-11 | 2018-01-26 | 北京工业大学 | A kind of bipolar plates for strengthening blade trailing cooling heat transfer water |
| CN107634240A (en) * | 2017-09-04 | 2018-01-26 | 苏州中氢能源科技有限公司 | A kind of small fuel cell metal double polar plates |
| CN110212213A (en) * | 2019-07-08 | 2019-09-06 | 上海捷氢科技有限公司 | A kind of dual polar plates of proton exchange membrane fuel cell |
| CN111446464A (en) * | 2020-05-22 | 2020-07-24 | 上海捷氢科技有限公司 | Bipolar plate of fuel cell |
| CN111525148A (en) * | 2020-04-17 | 2020-08-11 | 珠海格力电器股份有限公司 | Unipolar plate, bipolar plate and fuel cell |
| CN112786914A (en) * | 2021-02-23 | 2021-05-11 | 上海电气集团股份有限公司 | Bipolar plate and fuel cell |
-
2007
- 2007-12-13 CN CN200710172148A patent/CN100595957C/en active Active
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|---|---|---|---|---|
| CN102306813B (en) * | 2011-08-12 | 2013-12-11 | 上海交通大学 | Fuel cell bipolar plate prepared through metal sheet stamping and forming, and application thereof |
| CN102306813A (en) * | 2011-08-12 | 2012-01-04 | 上海交通大学 | Fuel cell bipolar plate prepared through metal sheet stamping and forming, and application thereof |
| CN102699533A (en) * | 2012-06-13 | 2012-10-03 | 上海交通大学 | Self-adaptive laser welding fixture for ultra-thin metal bipolar plate of fuel cell |
| CN102699533B (en) * | 2012-06-13 | 2014-12-10 | 上海交通大学 | Self-adaptive laser welding fixture for ultra-thin metal bipolar plate of fuel cell |
| CN102969513A (en) * | 2012-12-03 | 2013-03-13 | 上海交通大学 | Large-area metal bipolar plate for automobile fuel cell |
| CN105027340A (en) * | 2013-03-13 | 2015-11-04 | 大众汽车有限公司 | Bipolar plate for a fuel cell, fuel cell and method for producing the bipolar plate |
| US10056640B2 (en) | 2013-03-13 | 2018-08-21 | Volkswagen Ag | Bipolar plate for fuel cell, fuel cell and method for producing the bipolar plate |
| CN105027340B (en) * | 2013-03-13 | 2018-07-03 | 大众汽车有限公司 | For the bipolar plate of fuel cell, fuel cell and method for manufacturing bipolar plate |
| CN104900894B (en) * | 2015-04-14 | 2018-02-02 | 中国东方电气集团有限公司 | The metal polar plate of fuel cell, the metal double polar plates of fuel cell, fuel cell |
| CN104900894A (en) * | 2015-04-14 | 2015-09-09 | 中国东方电气集团有限公司 | Metal pole plate of fuel battery, metal bipolar plate of fuel battery and fuel battery |
| CN104733744A (en) * | 2015-04-14 | 2015-06-24 | 中国东方电气集团有限公司 | Fuel cell metal polar plate, fuel cell metal bipolar plate and fuel cell |
| CN104795574A (en) * | 2015-04-14 | 2015-07-22 | 中国东方电气集团有限公司 | Metal bipolar plates of fuel cell and fuel cell |
| CN104733744B (en) * | 2015-04-14 | 2017-12-19 | 中国东方电气集团有限公司 | The metal polar plate of fuel cell, the metal double polar plates of fuel cell, fuel cell |
| CN104900886A (en) * | 2015-05-27 | 2015-09-09 | 江苏绿遥燃料电池系统制造有限公司 | Metal bipolar plate with convection type cooling liquid flow field |
| CN104900886B (en) * | 2015-05-27 | 2017-09-26 | 江苏氢电新能源有限公司 | A kind of metal double polar plates with convection type coolant flow field |
| CN105186015A (en) * | 2015-07-17 | 2015-12-23 | 江苏绿遥燃料电池系统制造有限公司 | Bridging type metal bipolar plate |
| CN107634240A (en) * | 2017-09-04 | 2018-01-26 | 苏州中氢能源科技有限公司 | A kind of small fuel cell metal double polar plates |
| CN107634239A (en) * | 2017-09-11 | 2018-01-26 | 北京工业大学 | A kind of bipolar plates for strengthening blade trailing cooling heat transfer water |
| CN110212213A (en) * | 2019-07-08 | 2019-09-06 | 上海捷氢科技有限公司 | A kind of dual polar plates of proton exchange membrane fuel cell |
| CN111525148A (en) * | 2020-04-17 | 2020-08-11 | 珠海格力电器股份有限公司 | Unipolar plate, bipolar plate and fuel cell |
| CN111446464A (en) * | 2020-05-22 | 2020-07-24 | 上海捷氢科技有限公司 | Bipolar plate of fuel cell |
| CN112786914A (en) * | 2021-02-23 | 2021-05-11 | 上海电气集团股份有限公司 | Bipolar plate and fuel cell |
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