CN101572318B - Proton exchange membrane fuel cell metal bipolar plate - Google Patents
Proton exchange membrane fuel cell metal bipolar plate Download PDFInfo
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- CN101572318B CN101572318B CN2009100120888A CN200910012088A CN101572318B CN 101572318 B CN101572318 B CN 101572318B CN 2009100120888 A CN2009100120888 A CN 2009100120888A CN 200910012088 A CN200910012088 A CN 200910012088A CN 101572318 B CN101572318 B CN 101572318B
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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 proton exchange membrane fuel cell metal bipolar plate, which consists of a cathode monopolar plate and an anode monopolar plate made of sheet metal, wherein a flow passage of the monopolar plates consists of a flow field flow passage, a distribution flow passage and an inlet-outlet passage, and the proton exchange membrane fuel cell metal bipolar plate is characterized in that the distribution flow passage is a point-like flow passage, the point-like flow passage consists of unconnected lug bosses raised towards the front side of the monopolar plates, the back sidesof the lug bosses are provided with steel pits, the steel pit on the back side of the lug boss on the cathode monopolar plate is staggered with the steel pit on the back side of the lug boss on the a node monopolar plate, and the front part and the back part of the steel pits are overlapped relatively to form continuous water flow distribution flow passages which are connected in series. The proton exchange membrane fuel cell metal bipolar plate has the advantages of thin thickness for the manufactured bipolar plate, strict separation of fluid, good fluid distribution, light weight, simple processing and low processing cost; besides, the bipolar plate has high effective utilization area and good fluid resistance distribution evenness, and can satisfy the needs of different battery heat exchanges.
Description
Technical field
The invention belongs to fuel cell field, relate in particular to dual polar plates of proton exchange membrane fuel cell.
Background technology
In the prior art, the metal double polar plates of Proton Exchange Membrane Fuel Cells, negative electrode unipolar plate and the anode unipolar plate made by sheet metal constitute, with welding or technique for sticking combination, the front of each unipolar plate of cathode plate and plate is respectively cathode cavity and anode cavities, each unipolar plate of cathode plate and plate the back side be cooling water cavity, each unipolar plate of cathode plate and plate just, back of the body two sides is equipped with the runner that concavo-convex groove constitutes, just, the concavo-convex groove of runner on back of the body two sides is corresponding mutually, positive projection is the groove at the back side, and positive convex upper surface place in one plane; Positive groove is the projection at the back side, the projection at the back side also in one plane, positive chase groove has constituted the runner in cathode and anode chamber respectively, all chase grooves at the back side have constituted the runner of cooling water cavity.Each unipolar plate front of cathode plate and plate seals the chase groove in addition, the back side of sealing chase groove bottom is the cooling chamber side, the back side of sealing chase groove bottom is crowning, the upper surface of this crowning is a plane, the plane that this plane and the flow path groove back side, cathode and anode chamber convex to form is not in one plane, the plane height that the plane that the back side of sealing chase groove bottom forms convexes to form than the flow path groove back side, cathode and anode chamber, this highly forms the import of water cavity.Flow field on each unipolar plate of cathode plate and plate is divided into import and export dispensing section and straight parallel type groove flow field segments two parts, and existing dispensing section runner has corner to move towards runner and runner is moved towards in inclination, is made up of many continuous channels.The unipolar plate required precision height of this runner is made relatively difficulty.
Summary of the invention
The objective of the invention is to design the easier metal double polar plates of a kind of distribution runner processing.Technical scheme of the present invention is: a metal double-plate for proton exchange film fuel cell, negative electrode unipolar plate and the anode unipolar plate made by sheet metal constitute, the front of negative electrode unipolar plate and anode unipolar plate is respectively cloudy, anode cavities, cloudy, the back side of anode unipolar plate is relative, be combined into cooling water cavity, cloudy, the runner that the anode unipolar plate is made of the concavo-convex groove in middle part, the public hydrogen channel entrance that two ends are offered, public air duct import and the import of public water circulation road are formed, the runner that the concavo-convex groove in described unipolar plate middle part constitutes is by the straight parallel type trench flow field flow road of mid portion, the distribution runner at runner two ends, flow field and the import and export passage that is communicated with the distribution runner are formed, distribute an end of runner to be communicated with the flow field runner, the other end is imported and exported passage with hydrogen respectively, air ports passage or current are imported and exported channel connection, the distribution runner that it is characterized in that two ends, described straight parallel type trench flow field flow road is the point-like runner, described point-like runner is the runner that is become by the mutually discrete boss shape to negative electrode unipolar plate and the positive projection of anode unipolar plate, the back side of boss is pit, the last plane of the projection in the last plane of boss and straight parallel type trench flow field flow road is on the same plane, the lower plane in the lower plane of boss and straight parallel type trench flow field flow road is on the same plane, promptly cloudy, the back side of the lower plane of anode unipolar plate boss is supported mutually, described mutually discrete boss is vertical and horizontal both direction in the distribution runner section of unipolar plate and is arranged in parallel or is a direction and be arranged in parallel, another direction is staggered, and the upper surface area of each boss is at 5-50mm
2Spacing is at 1.0-3mm between the adjacent lands, boss on boss on the negative electrode unipolar plate and the anode unipolar plate is when negative electrode unipolar plate and anode unipolar plate constitute bipolar plates, the pit at the boss back side on the negative electrode unipolar plate and the pit at the boss back side on the anode unipolar plate are staggered and arrange, on the negative electrode unipolar plate pit at each boss back side have the pit at each corresponding boss back side on 1/10-1/3 area and the anode unipolar plate be before and after relative overlap joint, pit and the pit current of the continuous serial connection of part formation of overlap joint relatively distribute runner, before and after the described pit relatively overlap joint be to be the front and back of reference with straight parallel type trench flow field flow road, the negative electrode unipolar plate of described metal double polar plates or the distribution runner on the anode unipolar plate grow the 1/10-1/3 of length before and after boss with respect to the distribution runner on oxygen utmost point unipolar plate corresponding with it or the negative electrode unipolar plate, distribute runner grow part with the straight parallel type trench flow field flow road overlap joint of its corresponding anode unipolar plate or negative electrode unipolar plate; The side that the negative electrode unipolar plate of described metal double polar plates or the current on the anode unipolar plate are imported and exported passage with current distribute runner to be communicated with have with and its corresponding anode unipolar plate or negative electrode unipolar plate on the pit that overlaps mutually of distribution runner pit.
A metal double-plate for proton exchange film fuel cell of the present invention, the boss that it is characterized in that described point-like runner are shaped as a kind of in circle, square, ellipse and the shuttle type.
A metal double-plate for proton exchange film fuel cell of the present invention is characterized in that the boss shape of the point-like runner on the cathode and anode unipolar plate of described dual polar plates of proton exchange membrane fuel cell is identical, and perhaps shape is inequality.
Dual polar plates of proton exchange membrane fuel cell of the present invention, the flow process of all kinds of fluids is as follows: cathode gas enters the cathode gas intake channel from cathode inlet, enter the distribution runner through the cathode gas intake channel, enter the flow field runner again, distribute runner to enter the cathode outlet passage through cathode outlet again, after the cathode gas port of export flows out; Anodic gas enters the anodic gas intake channel from anode inlet, enters the distribution runner through the anodic gas intake channel, enters the flow field runner again, distributes runner to enter the anode export passage through anode export again, after the anodic gas port of export flows out; Cooling water enters the water cavity passage from the water cavity import, distribute passage through the water cavity master, the water cavity that enters the pit overlap joint again distributes runner, water distributes runner to flow in the groove opposite of the cathode-anode plate back side by the water cavity of pit overlap joint, enter the water cavity exit passageway through the main runner that distributes of water cavity outlet again, after the water cavity port of export flows out.
Advantage of the present invention is: the bipolar plates thin thickness of manufacturing, fluid be strict mutually to be separated, fluid is distributed, in light weight, processing is simple, processing cost is low; The effective usable floor area of bipolar plates of the present invention reaches 65-75%, air cavity resistance distributing uniformity and cooling water cavity resistance distributing uniformity are good, the cooling water cavity resistance to water-flow changes by adjusting the anode and cathode chamber flow field patterns and the sealed groove degree of depth, can satisfy different battery heat needs.
Description of drawings
The present invention has accompanying drawing 8 width of cloth, wherein
Fig. 1 is the negative electrode unipolar plate structural representation that distributes the runner boss to be arranged in parallel at vertical and horizontal both direction,
Fig. 2 distributes the runner boss at the vertical direction anode unipolar plate structural representation that is arranged in parallel,
Fig. 3 is the water cavity passage perspective diagram that the cathode and anode pole plate by Fig. 1 and Fig. 2 is built up,
Fig. 4 is the superimposed water cavity passage of the cathode and anode pole plate cross-sectional schematic by Fig. 1 and Fig. 2,
Fig. 5 distributes cross-sectional schematic by the superimposed water cavity master of the cathode and anode pole plate of Fig. 1 and Fig. 2,
Fig. 6 be distribute the runner boss vertical and horizontal both direction all be arranged in parallel the cathode plate structural representation,
Fig. 7 is the anode plate construction schematic diagram that distributes the runner boss to be arranged in parallel at vertical and horizontal both direction,
Fig. 8 is that the yin, yang pole plate of Fig. 6 and Fig. 7 is built up water cavity passage perspective diagram.
In the accompanying drawing, 1, the minus plate cathode inlet, 1 ' positive plate cathode inlet, 2, the import of minus plate water cavity, 2 ' positive plate water cavity import, 3, the minus plate anode inlet, 3 ' positive plate water cavity import, 4, the minus plate sealed groove, 4 ' positive plate sealed groove, 5, the minus plate sealed groove, 6, the minus plate water cavity distributes the road, 6 ' positive plate water cavity distributes the road, 7, minus plate negative electrode dispensing section, 7 ' positive plate negative electrode dispensing section, 8, minus plate cathode flow field section, 8 ' positive plate cathode flow field section, 9, minus plate cathode inlet passage, 9 ' positive plate cathode inlet passage, 10, the superimposed back of cathode-anode plate water cavity intake channel, 11, the superimposed back of cathode-anode plate water cavity dispensing section passage, 12, the superimposed back of cathode-anode plate water cavity flow field segments passage, 13, the superimposed back of cathode-anode plate water cavity master dispensing section passage, 14, the anodic gas port of export, 15, the water cavity port of export, 16, the cathode gas port of export.
Embodiment
The invention will be further described below in conjunction with embodiment that accompanying drawing provides.
Embodiment 1:
Positive plate dispensing section point-like flow field boss is the oval boss of major diameter 5.8mm minor axis 4.0mm, positive plate point-like boss flow field boss is arranged as dislocation and arranges, 5 row boss are promptly arranged, every row boss center is on the mid point of two boss centers, prostatitis line, minus plate dispensing section point-like flow field boss is the oval boss of major diameter 4.8mm minor axis 4.6mm, minus plate point-like boss flow field boss is arranged as parallel regularly arranged, 4 row boss are promptly arranged, spacing is 2mm between the boss, anode and cathode pole plate boss back side pit is connected in series mutually, the overlap joint area be about major diameter 4.8mm minor axis 4.6mm ellipse 1/7, positive plate dispensing section length is 28mm, minus plate dispensing section length is 22mm, and positive plate straight parallel type groove flow field segment length is 278mm, and minus plate straight parallel type groove flow field segment length is 285mm.
The evaluation of bipolar plate structure design mainly is the effective usable floor area of bipolar plates, air cavity fluid resistance and distributing uniformity, water cavity fluid resistance and distributing uniformity, battery performance.
The effective usable floor area of bipolar plates: 70.5%,
Inlet pressure is 0.03MPa, and when the dry air flow was 51/min, the cathode cavity resistance was reduced to 6kpa, and the anode cavities resistance is reduced to 10kpa.It is 15% that maximum deviation falls in each runner gas-flow resistance; (computational methods for each flowpath pressure fall in the difference of maximum and minimum value account for the percentage that arithmetic mean falls in pressure, same down).
The import hydraulic head is the 1.5m water column, and monolithic bipolar plates water cavity flow is 200ml/min.
Embodiment 2:
Accompanying drawing 6～8th, the accompanying drawing of embodiment 1.Bipolar plates specification and moulding are with embodiment 1.
Positive plate dispensing section point-like flow field boss is the oval boss of major diameter 5.8mm minor axis 4.0mm, positive plate point-like boss flow field boss is arranged as and is arranged in parallel, 4 row boss are promptly arranged, minus plate dispensing section point-like flow field boss is the oval boss of major diameter 4.8mm minor axis 4.6mm, minus plate point-like boss flow field boss is arranged as parallel regularly arranged, 3 row boss are promptly arranged, spacing is 2mm between the boss, anode and cathode pole plate boss back side pit is connected in series mutually, the overlap joint area be about major diameter 4.8mm minor axis 4.6mm ellipse 1/7, positive plate dispensing section length is 28mm, minus plate dispensing section length is 22mm, positive plate straight parallel type groove flow field segment length is 278mm, and minus plate straight parallel type groove flow field segment length is 285mm.
The effective usable floor area of bipolar plates: 70.5%
Inlet pressure is 0.03MPa, and when the dry air flow was 5l/min, the cathode cavity resistance was reduced to 6kpa, and the anode cavities resistance is reduced to 10kpa.It is 15% that maximum deviation falls in each runner gas-flow resistance; The import hydraulic head is the 1.5m water column, and monolithic bipolar plates water cavity flow is 230ml/min.
Dual polar plates of proton exchange membrane fuel cell of the present invention, cathode gas enter cathode cavity from 1,1 ', enter dispensing section 7 through passage 9, enter flow field segments 8 again, to the minus plate port of export 16; Anodic gas enters anode cavities from 3,3 ', enters dispensing section 7 ' through passage 9 ', enters flow field segments 8 ' again, to the positive plate port of export 14; Cooling water enters the water cavity path 10 from 2,2 ', entering water cavity master dispensing section 13,13 ', enters water cavity dispensing section 11 again, and water flows in the groove opposite of the cathode-anode plate back side by dispensing section pit overlap joint, enters the water cavity port of export 15.
Be the excellent in performance of clearer sign bipolar plates of the present invention, provide the performance testing index of a contrast bipolar plates below:
Contrast bipolar plates overall dimensions are 410 * 100mm, and the flow field partial effective area is 334 * 80mm, and all the other are hermetically-sealed construction, and hermetically-sealed construction adopts the frame bonded structure.Plate material is the 0.1mm stainless sheet steel, adopts cold punching technology punching press cathode-anode plate, and intermediate water flow field between the cathode-anode plate forms the combination bipolar plates, and bonding forming is a bipolar plates, and bipolar plates thickness is 1.8mm.
The yin, yang pole plate all adopts straight parallel type groove flow field, and flow field patterns is identical with embodiment straight parallel type groove flow field part with distribution.
Comparative Examples bipolar plate structure performance testing index is as follows:
The effective usable floor area of bipolar plates: 65.2%
Inlet pressure is 0.03MPa, and when the dry air flow was 51/min, the cathode cavity resistance was reduced to 4.5kpa,
The anode cavities resistance is reduced to 5kpa.It is 37.5% that maximum deviation falls in each runner gas-flow resistance;
The import hydraulic head is the 1.5m water column, and monolithic bipolar plates water cavity flow is 150ml/min.
Claims (2)
1. a metal double-plate for proton exchange film fuel cell, negative electrode unipolar plate and the anode unipolar plate made by sheet metal constitute, the front of negative electrode unipolar plate and anode unipolar plate is respectively cloudy, anode cavities, cloudy, the back side of anode unipolar plate is relative, be combined into cooling water cavity, cloudy, the runner that the anode unipolar plate is made of the concavo-convex groove in middle part, the public hydrogen access portal that two ends are offered, public air passages openings and public water circulation road opening are formed, the runner that the concavo-convex groove in described unipolar plate middle part constitutes is by the straight parallel type trench flow field flow road of mid portion, the distribution runner at runner two ends, flow field and the import and export passage that is communicated with the distribution runner are formed, distribute an end of runner to be communicated with the flow field runner, the other end is imported and exported passage with hydrogen respectively, air ports passage or current are imported and exported channel connection, the distribution runner that it is characterized in that two ends, described straight parallel type trench flow field flow road is the point-like runner, described point-like runner is the runner that is become by the mutually discrete boss shape to negative electrode unipolar plate and the positive projection of anode unipolar plate, the back side of boss is pit, the last plane of the projection in the last plane of boss and straight parallel type trench flow field flow road is on the same plane, the lower plane in the lower plane of boss and straight parallel type trench flow field flow road is on the same plane, promptly cloudy, the back side of the lower plane of anode unipolar plate boss is supported mutually, described mutually discrete boss is vertical and horizontal both direction in the distribution runner section of unipolar plate and is arranged in parallel or is a direction and be arranged in parallel, another direction is staggered, and the upper surface area of each boss is at 5-50mm
2Spacing is at 1.0-3mm between the adjacent lands, boss on boss on the negative electrode unipolar plate and the anode unipolar plate is when negative electrode unipolar plate and anode unipolar plate constitute bipolar plates, the pit at the boss back side on the negative electrode unipolar plate and the pit at the boss back side on the anode unipolar plate are staggered and arrange, on the negative electrode unipolar plate pit at each boss back side have the pit at each corresponding boss back side on 1/10-1/3 area and the anode unipolar plate be before and after relative overlap joint, pit and the pit current of the continuous serial connection of part formation of overlap joint relatively distribute runner, before and after the described pit relatively overlap joint be to be the front and back of reference with straight parallel type trench flow field flow road, the negative electrode unipolar plate of described metal double polar plates or the distribution runner on the anode unipolar plate grow the 1/10-1/3 of length before and after boss with respect to the distribution runner on anode unipolar plate corresponding with it or the negative electrode unipolar plate, distribute runner grow part with the straight parallel type trench flow field flow road overlap joint of its corresponding anode unipolar plate or negative electrode unipolar plate; The side that the negative electrode unipolar plate of described metal double polar plates or the current on the anode unipolar plate are imported and exported passage with current distribute runner to be communicated with have with and its corresponding anode unipolar plate or negative electrode unipolar plate on the pit that overlaps mutually of distribution runner pit.
2. a metal double-plate for proton exchange film fuel cell according to claim 1, the boss that it is characterized in that described point-like runner are shaped as a kind of in circle, square, ellipse and the shuttle type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100120888A CN101572318B (en) | 2009-06-16 | 2009-06-16 | Proton exchange membrane fuel cell metal bipolar plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100120888A CN101572318B (en) | 2009-06-16 | 2009-06-16 | Proton exchange membrane fuel cell metal bipolar plate |
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| Publication Number | Publication Date |
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| CN101572318A CN101572318A (en) | 2009-11-04 |
| CN101572318B true CN101572318B (en) | 2010-12-08 |
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Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8465879B2 (en) * | 2010-11-03 | 2013-06-18 | GM Global Technology Operations LLC | Reinforced fuel cell metal plate perimeter |
| CN102013500A (en) * | 2010-11-05 | 2011-04-13 | 新源动力股份有限公司 | Gas flow field for proton exchange membrane fuel cell |
| JP5786419B2 (en) * | 2011-04-05 | 2015-09-30 | 日産自動車株式会社 | Fuel cell |
| JP5942955B2 (en) * | 2013-10-02 | 2016-06-29 | トヨタ自動車株式会社 | Fuel cell separator and fuel cell |
| CN103887537B (en) * | 2014-04-23 | 2016-03-02 | 北京九谷超微科技有限公司 | A kind of bipolar plates |
| CN105336967B (en) * | 2015-11-24 | 2019-02-05 | 上海空间电源研究所 | A kind of fuel cell bipolar plate structure |
| CN106249161B (en) * | 2016-08-11 | 2019-11-19 | 上海交通大学 | Proton Exchange Membrane Fuel Cells monocell test device under dry hydrogen test condition |
| CN109904480A (en) * | 2017-12-07 | 2019-06-18 | 中国科学院大连化学物理研究所 | A kind of bipolar plates with new flow field structure |
| CN108511774A (en) * | 2018-01-09 | 2018-09-07 | 张国胜 | Bipolar plates with coolant flow passages |
| CN108832154A (en) * | 2018-06-26 | 2018-11-16 | 李荣旭 | Dual polar plates of proton exchange membrane fuel cell |
| 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 |
| CN110289429B (en) * | 2019-06-21 | 2020-09-25 | 山东大学 | Flexible proton exchange membrane fuel cell polar plate and preparation method thereof |
| CN110444784B (en) * | 2019-07-16 | 2020-10-30 | 珠海格力电器股份有限公司 | Fuel cell stack and fuel cell stack with same |
| CN110380090A (en) * | 2019-07-26 | 2019-10-25 | 苏州弗尔赛能源科技股份有限公司 | A kind of unitized fuel cell bipolar plate |
| CN110890567B (en) * | 2019-12-02 | 2021-06-18 | 武汉轻工大学 | Air-cooled proton exchange membrane fuel cell graphite bipolar plate and fuel cell thereof |
| CN111146471B (en) * | 2019-12-27 | 2021-05-18 | 武汉理工大学 | Integrated renewable fuel cell flow field plate and cell structure thereof |
| CN111146469A (en) * | 2020-01-17 | 2020-05-12 | 无锡威孚高科技集团股份有限公司 | Graphite-metal composite bipolar plate for super-high power proton exchange membrane fuel cell |
| CN113571729B (en) * | 2020-04-29 | 2023-07-25 | 未势能源科技有限公司 | Bipolar plate and stack structure for fuel cell |
| CN113921845A (en) * | 2020-07-10 | 2022-01-11 | 未势能源科技有限公司 | Bipolar plate for fuel cell, fuel cell with bipolar plate and vehicle |
| CN113270608B (en) * | 2021-06-07 | 2022-07-15 | 嘉寓氢能源科技(辽宁)有限公司 | Metal bipolar plate of proton exchange membrane fuel cell beneficial to fluid distribution |
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| CN1405910A (en) * | 2001-08-16 | 2003-03-26 | 亚太燃料电池科技股份有限公司 | Fuel battery bipolar plate |
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