CN1889294A - Combined integrated bipole plate for proton exchange membrane fuel battery - Google Patents
Combined integrated bipole plate for proton exchange membrane fuel battery Download PDFInfo
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- CN1889294A CN1889294A CNA200610029402XA CN200610029402A CN1889294A CN 1889294 A CN1889294 A CN 1889294A CN A200610029402X A CNA200610029402X A CN A200610029402XA CN 200610029402 A CN200610029402 A CN 200610029402A CN 1889294 A CN1889294 A CN 1889294A
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- unipolar plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The present invention refers to combined type integral bipolar plate for hydrion exchange membrane fuel cell of fuel cell technology field. Said invention includes five sheets and gaskets, which are intermediate isolating gasket, two monopole boards, two sealing gaskets, wherein two monopole boards respectively located upper and lower sides of intermediate isolating gasket, two sheet gaskets respectively adhered on monopole board surface. All sheets and gaskets have same edge contour size, being rectangle with four square openings on both sides edge, respectively used as hydrogen fuel inlet, outlet, oxygen inlet and outlet, cooling fluid and outlet set nearing the hydrogen fuel outlet and oxygen outlet, round locating hole set at four corners of sheet and gasket.
Description
Technical field
The present invention relates to the bipolar plates in a kind of fuel cell technology field, specifically is a kind of combined integrated bipole plate that is used for Proton Exchange Membrane Fuel Cells.
Background technology
Fuel cell since its at the automobile power alternative energy source, the wide application prospect of aspects such as the mobile energy has become the new direction that various countries are studied energetically.Bipolar plates is the core component of fuel cell the inside, and the 30% above cost and the quality that account for 80% and total cost of pile total weight all account for 60% to 80%.In Proton Exchange Membrane Fuel Cells, bipolar plates plays provides reactive flowfield, separates Oxidizing and Reducing Agents, collects power supply, effects such as support membrane electrode.Therefore require bipolar plates must have performances such as non-penetrative, excellent conductive performance, certain mechanical strength and rigidity.Again because the faintly acid of conversion zone requires bipolar plates to have certain corrosion resistance in electrochemical environment, and has certain low-density with the power density that guarantees battery etc.From making on efficient and the manufacturing cost, bipolar plates can satisfy the requirement of high-efficiency and low-cost again in addition.
Requiring bipolar plates can have these above performances simultaneously is very difficult things.Therefore suppress the bottleneck problem that the research of fuel cell further develops and be exactly the manufacturing issue of pole plate, expensive, poor efficiency etc. are limiting the development of fuel cell field.
Current, the bipolar plate fabrication method of comparative maturity is exactly the graphite pole plate.But because the fragility of graphite pole plate is very big, bad mechanical strength simultaneously because its processing cost is expensive, and working (machining) efficiency is low, is difficult to realize producing in batches, so its commercial applications prospect is also uncertain.And metal double polar plates is easy to machine-shaping, can realize producing in enormous quantities, makes the efficient height, simultaneously good quality is being arranged aspect mechanical strength and the electric conductivity.And metal polar plate can do very thinly (0.01～0.2mm), can satisfy the lightweight requirements of bipolar plates.Under advanced person's surface modification treatment guarantees, also can satisfy corrosion resistant requirement under the mild acid conditions.Therefore, sheet metal has become a kind of just at the bipolar plate material of broad research.
Find through literature search prior art, the bipolar plates of combination (compound) formula, one type of combination that adds the intermediate flow field plate for frame, as the Chinese patent publication number be: CN 1416184A, name is called: the metal compound bipolar plate of Proton Exchange Membrane Fuel Cells, the feature readme of this patent is: the metal compound bipolar plate of a proton exchanging film fuel battery, this bipolar plates is made up of two parts, a part is and the corresponding strip-shaped grooves part of three-in-one electrode, thin metal seam by two block-shaped complete symmetries forms, another part is a metal edge frame, and frame and strip-shaped grooves part are integral by bonding or seam.Because it is a non-integral type, the seam of frame and flow-field plate will be faced with serious thermal deformation, also will be faced with serious corrosion situation in the metal bond zone of frame and central streams field plate simultaneously.Also having one type is all-in-one-piece combination bipolar plates, as the Chinese patent publication number be: CN 1242614A, name is called: the bipolar plates of Proton Exchange Membrane Fuel Cells, the feature readme of this patent is: a kind of composite type pem cell bipolar plates, form by pole plate frame, flow-field plate and demarcation strip; Both sides at demarcation strip are provided with the pole plate frame respectively, and flow-field plate is embedded in the pole plate frame; The pole plate frame is provided with oxidant and imports and exports, and fuel is imported and exported and import and export are helped secretly, and the pole plate frame is provided with dark duct towards demarcation strip one side; Flow-field plate demarcation strip one side dorsad is provided with runner.They can both improve performance or the production efficiency and the production cost of fuel battery pole board aspect some.
Yet in the above-mentioned technology, metal edge frame or plastic frame are inlayed in the type of flow-field plate, owing to be the non-integral type pole plate, accurate location in the time of all will being faced with the assembling of frame and central streams field plate, if metal edge frame embedded with metal flow-field plate, also will solve serious thermal deformation problem during seam, problems such as the sealing in metal bond district and anticorrosion also are difficult to be solved preferably simultaneously.Another kind of all-in-one-piece sheet metal combination, the thermal deformation problem in the time of also can't its seam of fine solution and the processing problems in flow field.
Summary of the invention
In order to solve current problem on fuel battery pole board is made, the purpose of this invention is to provide a kind of in light weight, the production assembly technology is simple, with low cost, realize the combined integrated bipole plate that is used for Proton Exchange Membrane Fuel Cells of production in enormous quantities easily, and can solve the problem that runs at aspects such as assembling and anticorrosions preferably.
The present invention is achieved by the following technical solutions, and the present invention includes five thin plates and pad altogether, is respectively the intermediate isolating pad, two unipolar plate, two gasket seals.Two unipolar plate place intermediate isolating pad both sides up and down respectively.Two gasket seals are fitted in the unipolar plate surface respectively.All thin plates have identical edge contour size with pad, be as general as rectangle, be equipped with four square openings in both sides of the edge, respectively as hydrogen fuel air inlet, gas outlet, oxygen air inlet, gas outlet, one side also is provided with cooling liquid inlet, outlet in the gas outlet.Be provided with circular location hole at thin plate and four angles of pad.
The intermediate isolating pad is the synthetic resin material, has certain thickness and intensity and heat resistance.The elevated regions that is shaped as unipolar plate of central area cut-out, thickness are the ditch ridge height of projection sum of two unipolar plate, adopt injection mo(u)lding.
Two unipolar plate are metal material such as stainless steel, the center flow field regions, and the two ends air inlet is given vent to anger and is extended passage and each air inlet gas outlet, which is provided with location hole, and location hole adopts punch forming, and the flow field is interdigitated.Moulding is after surface treatment, and two unipolar plate thickness are 0.2～0.5mm.
Two gasket seals are the rubber-like encapsulant, cut-out shape is consistent with two unipolar plate flow field regions in the middle of it, and the area size is bigger than the flow field, and the edge part leaves the shoulder of certain width, the thickness of two gasket seals is slightly larger than diffusion layer, is generally 0.3～0.6mm.
The runner spine that is stamped to form on two unipolar plate fits and forms continuous runner, by the restriction of intermediate isolating pad, provides passage with the cooling liquid inlet outlet for the circulation of cooling fluid.
Compared with prior art, advantage of the present invention is: unipolar plate is stamped to form by stainless steel metal thin plate one-shot forming technique, is the integral type pole plate.Manufacture craft is simple, can reduce battery weight, can reduce cost greatly, enhances productivity simultaneously.In addition, in the reactive flowfield zone, there is not the direct contact between the metal, have only contacting of metal unipolar plate and nonmetal gasket seal or intermediate isolating pad, can reduce the corrosion situation in metal bond district greatly, simultaneously, non-welding connecting mode can be used between the nonmetal and metal, the thermal deformation that causes because of welding can be avoided.Contact area between two unipolar plate has only the ditch ridge part of flow field regions, and contact area is little, can reduce the contact resistance of fuel cell significantly.Bipolar plates and intermediate isolating pad, gasket seal all adopt whole thin board type, can greatly make things convenient for the assembling of bipolar plate assembly, improve efficiency of assembling.
Description of drawings
Fig. 1: be general structure decomposing schematic representation of the present invention
Fig. 2: be perspective view of the present invention
Fig. 3: be unipolar plate runner floor map of the present invention (forming runner) with the gasket seal restriction
Wherein: intermediate isolating pad 1, anode unipolar plate 2, negative electrode unipolar plate 3, the first gasket seals 4, the second gasket seals 5, first pore, 6, the second pores, 7, the three pores, 8, the four pores 9, cooling liquid inlet 10, cooling liquid outlet 11, flow field 12, air guide channel 13, diffusion layer 14, location hole 15.
Embodiment
Further describe embodiments of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention includes: intermediate isolating pad 1, anode unipolar plate 2, negative electrode unipolar plate 3, the first gasket seals 4, the second gasket seals 5.The integral type metal anode unipolar plate 2 and the negative electrode unipolar plate 3 of two symmetries have flow field 12 and air guide channel 13 on anode unipolar plate 2 and the negative electrode unipolar plate 3, adopt punch forming, place intermediate isolating pad 1 both sides.The shape of intermediate isolating pad 1 central area cut-out is consistent with the elevated regions of anode unipolar plate 2 and negative electrode unipolar plate 3.Anode unipolar plate 2 is relative with negative electrode unipolar plate 3 stamped bumps one side, and with four location holes, 15 location, pressure is fitted, and its protruding ditch ridge is accurately alignd.First gasket seal 4 and second gasket seal 5 place a recessed side surface of anode unipolar plate 2 and negative electrode unipolar plate 3 respectively.The middle hole shape of first gasket seal 4 and second gasket seal 5 is consistent with anode unipolar plate 2 and negative electrode unipolar plate 3 flow field regions, the area size is bigger than flow field 12, both ends cover the air guide channel 13 on anode unipolar plate 2 and the negative electrode unipolar plate 3, form the air inlet outlet passageway of sealing.Dual-side is along the shoulder that partly leaves certain width, and the thickness of first gasket seal 4 and second gasket seal 5 is greater than diffusion layer 14, and the inner certain altitude that forms is with diffusion restriction layer 14 and membrane electrode MEA.
As shown in Figure 3, when the present invention worked, by air guide channel 13, flow field 12 was flowed out by the 4th pore 9 in the flow field 12 of the anode unipolar plate 2 of flowing through to hydrogen fuel from second pore 7.By air guide channel 13, the flow field is flowed out by the 3rd pore 8 in the flow field 12 of the negative electrode unipolar plate 3 of flowing through to oxygen by first pore 6.Because the air guide channel 13 on the anode unipolar plate 2 is not communicated with first pore 6, the 3rd pore 8, air guide channel 13 on the negative electrode unipolar plate 3 is not communicated with second pore 7, the 4th pore 9, and hydrogen fuel and oxygen can distribute individually and enters anode unipolar plate 2 and negative electrode unipolar plate 3.The hydrogen ion of the hydrogen in the anode unipolar plate of flowing through 2 flow fields 12 enters negative electrode one side of the lastblock bipolar plates of fitting with this bipolar plates by electrolyte, with the oxygen generation electrochemical reaction on it, and forms electronics by two conductor metal unipolar plate and flows.In like manner, the oxygen in the flow field 12 of the negative electrode unipolar plate 3 of flowing through then cooperates with anode one side of next piece bipolar plates, form just as electrode reaction and electronics flow.
Claims (7)
1, a kind of combined integrated bipole plate that is used for Proton Exchange Membrane Fuel Cells, comprise: intermediate isolating pad (1), anode unipolar plate (2), negative electrode unipolar plate (3), first gasket seal (4), second gasket seal (5), it is characterized in that: flow field (12) and air guide channel (13) are arranged on anode unipolar plate (2) and the negative electrode unipolar plate (3), anode unipolar plate (2) and negative electrode unipolar plate (3) place intermediate isolating pad (1) both sides, the shape of intermediate isolating pad (1) central area cut-out is consistent with the elevated regions of anode unipolar plate (2) and negative electrode unipolar plate (3), first gasket seal (4) and second gasket seal (5) place a recessed side surface of anode unipolar plate (2) and negative electrode unipolar plate (3) respectively, the middle hole shape of first gasket seal (4) and second gasket seal (5) is consistent with anode unipolar plate (2) and negative electrode unipolar plate (3) flow field regions, the area size is bigger than flow field (12), both ends cover the air guide channel (13) on anode unipolar plate (2) and the negative electrode unipolar plate (3), form the air inlet outlet passageway of sealing, dual-side leaves shoulder along part.
2, the combined integrated bipole plate that is used for Proton Exchange Membrane Fuel Cells according to claim 1, it is characterized in that: intermediate isolating pad (1), anode unipolar plate (2), negative electrode unipolar plate (3) and first gasket seal (4) and second gasket seal (5), on the correspondence position of position, four corners, be equipped with first pore (6), second pore (7), the 3rd pore (8), the 4th pore (9), also be respectively equipped with cooling liquid inlet (10), cooling liquid outlet (11) near the 4th pore (9), the 3rd pore (8).
3, the combined integrated bipole plate that is used for Proton Exchange Membrane Fuel Cells according to claim 1 and 2, it is characterized in that: the air guide channel (13) on the anode unipolar plate (2) is communicated with second pore (7), the 4th pore (9), and second pore (7), the 4th pore (9) are respectively as hydrogen fuel air inlet and gas outlet; Air guide channel (13) on the negative electrode unipolar plate (3) is communicated with first pore (6), the 3rd pore (8), and first pore (6), the 3rd pore (8) are respectively as oxygen air inlet and gas outlet.
4, according to claim 1 or the 2 described combined integrated bipole plates that are used for Proton Exchange Membrane Fuel Cells, it is characterized in that: the thickness of first gasket seal (4) and second gasket seal (5) is greater than diffusion layer (14).
5, according to claim 1 or the 2 described combined integrated bipole plates that are used for Proton Exchange Membrane Fuel Cells, it is characterized in that: anode unipolar plate (2) and negative electrode unipolar plate (3) are the monolithic construction of two symmetries, anode unipolar plate (2) is relative with the protruding side of negative electrode unipolar plate (3), locatees with four location holes (15).
6, the combined integrated bipole plate that is used for Proton Exchange Membrane Fuel Cells according to claim 1 is characterized in that: flow field (12) are interdigitated flow field.
7, according to claim 1 or the 2 described combined integrated bipole plates that are used for Proton Exchange Membrane Fuel Cells, it is characterized in that: intermediate isolating pad (1), its material are the synthetic resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610029402XA CN100392895C (en) | 2006-07-27 | 2006-07-27 | Combined integrated bipole plate for proton exchange membrane fuel battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610029402XA CN100392895C (en) | 2006-07-27 | 2006-07-27 | Combined integrated bipole plate for proton exchange membrane fuel battery |
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| CN1889294A true CN1889294A (en) | 2007-01-03 |
| CN100392895C CN100392895C (en) | 2008-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905268A (en) * | 2010-07-24 | 2010-12-08 | 大连神通模具有限公司 | Small hydrogen fuel battery metal bi-polar plate forming mould |
| CN102983338A (en) * | 2012-12-03 | 2013-03-20 | 新源动力股份有限公司 | Fuel cell bipolar metal plate with enhanced sealing property |
| 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 |
| CN107543942A (en) * | 2017-08-18 | 2018-01-05 | 浙江科技学院（浙江中德科技促进中心） | The test fixture and method of testing of membrane electrode |
| CN111477906A (en) * | 2020-05-26 | 2020-07-31 | 上海交通大学 | Air-permeable bipolar plate suitable for fuel cell stack and fuel cell stack |
| 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 |
| CN111566392A (en) * | 2018-11-05 | 2020-08-21 | Nok株式会社 | Method for determining welding position of metal gasket |
| CN113964362A (en) * | 2021-12-23 | 2022-01-21 | 国家电投集团氢能科技发展有限公司 | Frame structure and electrochemical cell device having the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121075C (en) * | 1998-07-22 | 2003-09-10 | 大连新源动力股份有限公司 | Double electrode plate of proton exchange film fuel cell |
| CN1416184A (en) * | 2001-11-01 | 2003-05-07 | 哈尔滨工业大学 | Metal compound bipolar plate of fuel cell with proton exchange film |
| CN2694502Y (en) * | 2004-05-21 | 2005-04-20 | 天津大学 | Double plates for combined type proton exchange film battery |
| FR2879824A1 (en) * | 2004-12-16 | 2006-06-23 | Snecma Moteurs Sa | BIPOLAR PLATE FOR FUEL CELL |
-
2006
- 2006-07-27 CN CNB200610029402XA patent/CN100392895C/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905268A (en) * | 2010-07-24 | 2010-12-08 | 大连神通模具有限公司 | Small hydrogen fuel battery metal bi-polar plate forming mould |
| CN101905268B (en) * | 2010-07-24 | 2012-05-23 | 大连神通模具有限公司 | Small hydrogen fuel battery metal bi-polar plate forming mould |
| CN102983338A (en) * | 2012-12-03 | 2013-03-20 | 新源动力股份有限公司 | Fuel cell bipolar metal plate with enhanced sealing property |
| 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 |
| CN107543942A (en) * | 2017-08-18 | 2018-01-05 | 浙江科技学院（浙江中德科技促进中心） | The test fixture and method of testing of membrane electrode |
| CN107543942B (en) * | 2017-08-18 | 2024-04-12 | 浙江科技学院（浙江中德科技促进中心） | Test fixture and test method for membrane electrode |
| CN111566392A (en) * | 2018-11-05 | 2020-08-21 | Nok株式会社 | Method for determining welding position of metal gasket |
| CN111566392B (en) * | 2018-11-05 | 2022-06-14 | Nok株式会社 | Method for determining welding position of metal gasket |
| 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 |
| CN111477906A (en) * | 2020-05-26 | 2020-07-31 | 上海交通大学 | Air-permeable bipolar plate suitable for fuel cell stack and fuel cell stack |
| CN113964362A (en) * | 2021-12-23 | 2022-01-21 | 国家电投集团氢能科技发展有限公司 | Frame structure and electrochemical cell device having the same |
| CN113964362B (en) * | 2021-12-23 | 2022-03-08 | 国家电投集团氢能科技发展有限公司 | Frame structure and electrochemical cell device having the same |
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| CN100392895C (en) | 2008-06-04 |
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Address after: 201306 factory building 1, No. 1500, cenglin Road, Lingang New District, pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: Shanghai Zhizhen new energy Co.,Ltd. Address before: 201306 Shanghai Pudong New Area Nanhui new town 888 West Road two Patentee before: SHANGHAI ZHIZHEN NEW ENERGY EQUIPMENT CO.,LTD. |
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Effective date of registration: 20220621 Address after: No. 56, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu 215533 Patentee after: Suzhou Zhizhen new energy equipment Co.,Ltd. Address before: 201306 factory building 1, No. 1500, cenglin Road, Lingang New District, pilot Free Trade Zone, Pudong New Area, Shanghai Patentee before: Shanghai Zhizhen new energy Co.,Ltd. |
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