CN202275888U - Metal bipolar plate of PEMFC favorable for improving fluid distribution - Google Patents
Metal bipolar plate of PEMFC favorable for improving fluid distribution Download PDFInfo
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Abstract
The utility model discloses a metal bipolar plate of PEMFC (Proton Exchange Membrane Fuel Cell) favorable for improving fluid distribution, which comprises a cathode monopolar plate and an anode monopolar plate through counterpart connection, wherein, three-cavity public pipelines are arranged on the two sides of the cathode and anode monopolar plates, and DC field flow passages, distribution flow passages and inlet and outlet flow passages are arranged at the middle part of the cathode and anode monopolar plates; the DC field flow passages comprise bulges and grooves which are parallel; the distribution flow passages comprise flow guide inlands and supporting points of reverse bulges which are distributed regularly; the inlet sides and outlet sides of the cathode and anode monopolar plates are asymmetrical; and the inlet area of the air cavity public pipelines is about .01-0.5 times of that of the outlet area of the air cavity public pipelines. The metal bipolar plate has the benefits that through the distribution flow passages, the distribution of reaction air and refrigerant is improved, the stack performance is promoted, and the stack water management ability is optimized; the three-cavity outlets are asymmetrical, so the space is saved to the utmost; the assembled stack can be operated horizontally, laterally and vertically; and the battery stack can be assembled and externally positioned, so the battery can be prevented from deformation and distortion, and accordingly, the smooth of the battery stack is improved.
Description
Technical field
The utility model belongs to the fuel cell technology field, relates in particular to dual polar plates of proton exchange membrane fuel cell.
Background technology
Characteristics such as Proton Exchange Membrane Fuel Cells (PEMFC) is efficient with it, energy-saving and environmental protection, safety have obtained extensive concern, are considered to the first-selected dynamical system of replace internal combustion engines.Bipolar plates is the key component of PEMFC, and it is the performance of appreciable impact PEMFC not only, and has occupied the 70%-80% and more than 45% of cost of pile weight.Therefore, light-duty, the slim bipolar plates that exploitation is easy to realize large-scale production reduces production costs for improving the pile specific power, and then it is significant to promote the PEMFC commercialization.
The material of current preparation bipolar plates mainly comprises graphite, metal and composite material etc.Contact resistance between the high and gas diffusion layers of graphite bi-polar plate conductivity is low, corrosion-resistant, is bipolar plate material preferably.But graphite cake is more crisp thereby processing charges is high, and its air-tightness is relatively poor simultaneously, and for preventing infiltration, thickness must be bigger.Assembling has brought difficulty to pile for this, and the quality that greatly reduces battery pile is than power and volumetric specific power.The composite material double pole plate cost is low, be easy to realize mass production, but its contact resistance is big, be difficult to the demoulding during production, thereby utilization rate is not high yet.Therefore, metal material with its intrinsic high conductivity and thermal conductivity, high temperature resistant, air-tightness good, high strength, advantages such as processing easily, caused a lot of PEMFC researchers' attention.
The flow field is the groove of the different shape on bipolar plates, processed, for reactant and generate product access way is provided, is the key factor of fuel cell design.Therefore; Metal double polar plates reasonable in design and flow field thereof both can reduce the quality and the thickness of bipolar plates; The quality that improves pemfc stack is than power and gravimetric specific power, and all right required fuel of uniform distribution battery and oxidant guarantee the current density uniform distribution; The water and the tail gas that simultaneously battery are generated are discharged smoothly, improve the PEMFC stack performance.
In the prior art; It is the metal double polar plates in waveform flow field that patent CN 101133506A discloses that a kind of two ends have in the middle of the dispensing head; Its weak point is: be difficult to guarantee the uniform distribution of gas at each runner, the accurate location when also being difficult to simultaneously realize the pile assembling.
Patent CN 101420037A discloses a kind of metal double polar plates template; Its cathode flow field is one minute three a dc fields; Anode flow field is the serpentine flow of one-to-two, and its advantage is: but walking of double-decker realization response gas and cryogen is logical, and gas inlet and outlet pressure reduction is big; But its weak point is: the serpentine flow structure makes air resistance consume around the corner mostly, is unfavorable for the eliminating of water generation reaction and gas tail gas, and the water flow field import and export are less relatively in addition, and water resistance is bigger, is unfavorable for the bipolar plates heat exchange.
Application number is that 201010561291.3 patent discloses a kind of dual polar plates of proton exchange membrane fuel cell dispensing head; Dispensing head is made up of with distribution fence two parts the water conservancy diversion district; Lay many row's channelizing islands by rule on the water conservancy diversion district base plate; Distribute fence to be positioned at water conservancy diversion district and pole plate flow path area junction, distributing fence is the channelizing island that a row is uniformly distributed with.Its deficiency is that dispensing head is only limited to gas flowfield, does not change the refrigerant fluid flow field.
Summary of the invention
The purpose of the utility model provides a kind of metal double polar plates that helps reacting gas and refrigerant fluid.The technical scheme of the utility model is: help improving the dual polar plates of proton exchange membrane fuel cell that fluid distributes; Connect and compose by the stamping forming cathode and anode unipolar plate of sheet metal correspondence; The cathode and anode unipolar plate is provided with the cathode and anode flow field runner and the potted line at the air chamber common-use tunnel that comprises both sides, hydrogen chamber common-use tunnel, cooling chamber common-use tunnel, middle part; Cathode and anode flow field runner distributes runner by the air of yin, yang pole plate intermediate dc field runner, the cathode-anode plate that communicates with dc fields runner two ends and hydrogen and forms with cathode-anode plate air that distributes runner to be communicated with and hydrogen import and export runner; Air and hydrogen are imported and exported runner and are communicated with the air chamber common-use tunnel and the hydrogen chamber common-use tunnel of cathode and anode unipolar plate both sides respectively; The import of air chamber common-use tunnel communicates with minus plate air outlet slit common conduit through minus plate air intlet runner, inlet side minus plate air distribution runner, minus plate middle straight runner, outlet side minus plate air distribution runner and minus plate air outlet slit runner, and the common-use tunnel import of hydrogen chamber distributes runner, positive plate middle straight runner, outlet side positive plate hydrogen to distribute runner and positive plate hydrogen outlet runner to communicate with positive plate hydrogen outlet common conduit through positive plate hydrogen inlet runner, inlet side positive plate hydrogen; Intermediate dc field runner is made up of parallel convexity and groove; Air and hydrogen distribute runner to be made up of to the positive protruding channelizing island of cathode and anode unipolar plate respectively what arrange by rule; The channelizing island shape is identical; Be the file direction and arrange, the angle between channelizing island file direction and the bipolar plates transverse horizontal line is 30-60 °, spacing 1-3mm between the channelizing island; Potted line is along cathode and anode unipolar plate periphery and air chamber common-use tunnel, hydrogen chamber common-use tunnel and cooling chamber common-use tunnel periphery; It is characterized in that: said cathode and anode unipolar plate inlet side and outlet side are dissymmetrical structure; Said dissymmetrical structure comprises: cathode and anode unipolar plate inlet side is from the dual-side of middle dc fields runner entrance point to the inlet side end both sides hem width 5-10mm than intermediate dc field runner; Than the wide 5-10mm of intermediate dc field runner side, the area of air chamber common-use tunnel and the common-use tunnel import of hydrogen chamber than the big 0.1-0.5 of area of outlet doubly from the end of middle dc fields runner exit end to outlet side for a corresponding side of outlet side cathode and anode unipolar plate; Said cathode and anode unipolar plate air chamber common-use tunnel and hydrogen chamber common-use tunnel to import and export the limit that runner links to each other with air and hydrogen be hypotenuse, hypotenuse and and bipolar plates transverse horizontal line between angle be 30～60 °; Said air and hydrogen distribute runner also to comprise respectively to the protruding strong point of cathode and anode unipolar plate reverse side; Strong point shape is identical; The strong point is between the row and row of channelizing island file; Spacing between the strong point is along the spacing 1-3mm of airflow direction, and perpendicular to airflow direction spacing 1-6mm, the dull and stereotyped of the last plane of the strong point on the negative electrode unipolar plate of bipolar plates and relative anode unipolar plate supports mutually; Form cooling chamber and distribute runner, cooling chamber distributes runner to import and export runner through cooling chamber and is communicated with the cooling chamber common-use tunnel.
The described dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution of the utility model; The intermediate dc field runner that it is characterized in that said cathode and anode unipolar plate distributes the runner height different with air and hydrogen; Intermediate dc field runner height is 0.3-0.5mm; It is 0.4-0.7mm that air and hydrogen distribute the runner height; The runner height is meant the height at the bottom of groove is arrived on protruding top, and intermediate dc field flow channel ratio air and hydrogen distribute the low 0.1-0.2mm of runner, and air and hydrogen distribute the last plane of runner channelizing island and the protruding last plane of intermediate dc field runner to be on the same plane; The lower plane of the air and the hydrogen distribution runner strong point and the lower plane of intermediate dc field runner groove be not on same plane, and the lower plane of the strong point is than the low 0.1-0.2mm of lower plane of dc fields runner trench.
The described dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution of the utility model; The shape that it is characterized in that said channelizing island is a kind of in rectangle, square, circular, oval, trapezoidal, triangle and the fusiformis, and the length direction of the channelizing island of the unequal shape of length and width is consistent with airflow direction in the said shape arranges.
The described dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution of the utility model; The longest 2 length that it is characterized in that the baseplane shape of said channelizing island is 2.0-4.0mm; The wideest 2 width is 0.8-1.5mm, highly is 0.2-0.4mm.
The described dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution of the utility model; The shape that it is characterized in that the said strong point is a kind of in circle, ellipse, rectangle, square, trapezoidal, triangle and the fusiformis, and the length direction of the channelizing island of the unequal shape of length and width is consistent with airflow direction in the said shape arranges.
The described dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution of the utility model; The longest 2 length that it is characterized in that the baseplane shape of the said strong point is 1.0-3.0mm; The wideest 2 width is 0.8-1.5mm, highly is 0.2-0.4mm.
The described dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution of the utility model; Two drift angle places that it is characterized in that the inlet side of said cathode and anode unipolar plate are provided with breach, and two drift angles of breach and outlet side are formed bipolar plates assembling outside fix structure.
The beneficial effect of the utility model is:
1, because air chamber, hydrogen chamber and cooling chamber are imported and exported asymmetrical design; Wherein the air cavity import is bigger than discharge area, and cooling chamber is imported and exported area and equated, can strengthen the air cavity inlet outlet pressure differential; Particularly can improve the rate of flow of fluid of air cavity outlet, help the eliminating of water generation reaction and reaction end gas; Do not change simultaneously cooling chamber and import and export area, can greatly reduce the cooling chamber resistance, improve the battery heat exchange efficiency.
2, the setting of channelizing island makes reacting gas when arriving runner, gas pressure, speed distributed uniform in each runner, thus simplify the fuel battery inside water management, improve battery performance.
3, the dull and stereotyped of plane and opposite side supports mutually on the strong point of cathode and anode back side convexity, formed cooling chamber and distributed runner, and when making cryogen arrival runner, each runner internal pressure, speed are distributed also very even, have improved the heat exchange efficiency of battery.
4, the pile of assembling by the bipolar plates of the utility model, applicable pile horizontal, side and vertically-arranged operation, range of application is wide.
5, bipolar plates assembling both can realize interior location, can also realize outside fix, and after especially outside fix can make the pile assembling accomplish, external backstay can avoid pile to be distorted, to be out of shape when battery pile is taken off, and can improve the planarization of battery pile.
Description of drawings
The utility model has accompanying drawing four width of cloth, wherein
Fig. 1 is the minus plate structural representation;
Fig. 2 is the anode plate structure sketch map;
Fig. 3 is a minus plate fluid sealant line position sketch map;
Fig. 4 is a positive plate fluid sealant line position sketch map;
Fig. 5 is that air hydrogen distributes the local enlarged diagram of runner;
Fig. 6 is an A-A generalized section among Fig. 5.
In the accompanying drawing:
01, minus plate air intlet common-use tunnel; 01 ', minus plate air outlet slit common conduit; 1, positive plate air intlet common conduit; 1 ', positive plate air outlet slit common conduit; 02, minus plate cryogen import common conduit; 02 ', minus plate cryogen outlet common conduit; 2, positive plate cryogen import common conduit; 2 ', positive plate cryogen outlet common conduit; 03, minus plate hydrogen inlet common conduit; 03 ', minus plate hydrogen outlet common conduit; 3, positive plate hydrogen inlet common conduit; 3 ', positive plate hydrogen outlet common conduit; 04,
Minus plate air intlet runner; 04 ', minus plate air outlet slit runner; 4, positive plate hydrogen inlet runner; 4 ', positive plate hydrogen outlet runner; 05, minus plate air distribution runner; 5, positive plate hydrogen distributes runner; 06, minus plate middle straight runner; 6, positive plate middle straight runner; 07, minus plate air intake direction; 7, positive plate hydrogen inlet direction; 08, minus plate cooling chamber potted line; 8, positive plate cooling chamber potted line; 09, minus plate fluid inlet end outside fix mouth; 9, positive plate fluid inlet end outside fix mouth; 010, minus plate fluid outlet drift angle; 10, positive plate fluid outlet drift angle; 011, location hole in the minus plate; 11, location hole in the positive plate; 012, minus plate air chamber potted line; 12, positive plate hydrogen chamber potted line; 13, channelizing island; 14, the strong point.
Embodiment
The embodiment that provides below in conjunction with accompanying drawing is described further the utility model.
Embodiment 1:
The bipolar plates moulding process step of embodiment 1 is:
1) select the SUS316L stainless sheet steel of 0.1mm thickness for use, cold stamping shaped cathode and anode unipolar plate on four-column hydraulic press is like Fig. 1, shown in Figure 2.Cathode and anode unipolar plate both sides have air chamber common- use tunnel 01,01 ', 1,1 ', hydrogen chamber common- use tunnel 03,03 ', 3,3 ' and cooling chamber common- use tunnel 02,02 ', 2,2 '; The dc fields runner 06,6 that the middle part is made up of parallel convexity and groove; Dc fields runner two ends are air of constituting to the positive protruding rectangle channelizing island 13 of cathode and anode unipolar plate with to the protruding strong point 14 in its back side respectively with hydrogen distribute runner 05,5 and with the air that distributes runner to be communicated with and hydrogen import and export runner 04,04 ', 4,4 '; Channelizing island 13 shapes are identical; Being the file direction arranges; Angle between channelizing island 13 file directions and the bipolar plates transverse horizontal line is 35 °; The strong point 14 is a round dot, and the strong point 14 is between the row of channelizing island 13 files and row, and the anode unipolar plate upper flat plate of plane and relative bipolar plates supports mutually on the strong point on the negative electrode unipolar plate of bipolar plates; Form cooling chamber and distribute runner, cooling chamber distributes runner to import and export runner through cooling chamber and is communicated with the cooling chamber common-use tunnel; Air and hydrogen import and export runner 04,04 ', 4,4 ' respectively with the air chamber common- use tunnel 01,01 of cathode and anode unipolar plate both sides ' and hydrogen chamber common-use tunnel 3,3 ' be communicated with; Air chamber common-use tunnel import 01 through minus plate air intlet runner 04, inlet side minus plate air distribution runner 05, minus plate middle straight runner 06, outlet side minus plate air distribution runner 05 and minus plate air outlet slit runner 04 ' with minus plate air outlet slit common conduit 01 ' communicate, hydrogen chamber common-use tunnel import 3 through positive plate hydrogen inlet runner 4, inlet side positive plate hydrogen distribute runner 5, positive plate middle straight runner 6, outlet side positive plate hydrogen distribution runner 5 and positive plate hydrogen outlet runner 4 ' with positive plate hydrogen outlet common conduit 1 ' communicate; Cathode and anode unipolar plate inlet side and outlet side are dissymmetrical structure: inlet side is from the dual-side of dc fields runner entrance point to the inlet side end both sides hem width 5-10mm than dc fields runner; The corresponding side of outlet side cathode and anode unipolar plate from the end of dc fields runner exit end to outlet side than dc fields flow passage side hem width 5-10mm; Two drift angle places of cathode and anode unipolar plate inlet side are provided with outside fix mouth 09,9; Two drift angles 010,10 of outside fix mouth 09,9 and outlet side are formed bipolar plates assembling outside fix structure; Air chamber common- use tunnel import 01,1 area is than outlet 01 ' 1 ' big 0.1 times, the area of hydrogen chamber common- use tunnel import 03,3 than outlet 03 ' 3 ' area big 0.35 times; Cathode and anode unipolar plate air chamber common- use tunnel 01,01 ', 1,1 ' with hydrogen chamber common- use tunnel 03,03 ', 3,3 ' with air and hydrogen import and export runner 04,04 ', 4, the 4 ' limit that links to each other is hypotenuse, hypotenuse and and bipolar plates transverse horizontal line between angle be 35 °;
2) use anchor clamps that the yin, yang pole plate is alignd; Adopt laser welding process to carry out laser welding along potted line 08,8 shown in Figure 1; Being welded to connect back support round dot 14 presses closer on the baseplane of opposite side unipolar plate; Formed the cooling chamber that highly distributes runner and sealing for the water flow field of 0.3mm, potted line 08,8,012,12 along cathode and anode unipolar plate periphery and air chamber common- use tunnel 01,01 ', 1,1 ', hydrogen chamber common- use tunnel 03,03 ', 3,3 ' and cooling chamber common- use tunnel 02,02 ', 2,2 ' periphery;
3) bipolar plates adopts the pulsed bias arc ion plating (aip) that it is carried out surface treatment, reduces contact resistance, improves decay resistance.Simultaneously, weld surface treatment more earlier, can reduce by 50% (existing technology generally is first surface treatment, again bonding or welding) of surface treatment expense;
4) air cavity import and export runner 04,04 ', 4,4 ' paste the SUS304 stainless steel gasket of thickness 0.1mm, to form the supporting surface of sealing tree lace (the sealing tree lace on the MEA opposite side pole plate).
This embodiment bipolar plates overall dimension is 410mm * 130mm.Flow field runner section effective area is merely intermediate dc field runner 06,6, and dc fields runner 06,6 overall dimensions are 273mm * 95mm, runner thickness 0.5mm, and behind the deduction stainless sheet steel skin depth, flow field runner height 0.4mm; Air cavity import and export runner 04,04 ', 4,4 ' form boss height 0.3mm (add skin depth after 0.4mm), spacing 2mm by equally spaced boss.Distribute runner 05,5 that gas uniform distribution effect only is provided, do not contain active area, wherein channelizing island 13 overall dimensions are 3mm * 1mm, height 0.25mm, mutual spacing 2mm; Support round dot 14 diameter 1mm, height 0.30mm is along airflow direction mutual spacing 3mm; Perpendicular to airflow direction mutual spacing 6mm; Distribute runner thickness to be: h distribution=h water conservancy diversion+h supports+0.1 (shaping sheet skin depth)=0.25+0.3+0.1=0.65mm, and wherein h representes thickness, and dc fields runner 06,6 thickness are 0.5mm; Both thickness differences are 0.15mm, air chamber common- use tunnel 01,01 ', 1,1 ' inlet-duct area is 918mm
2, discharge area is 834mm
2, hydrogen chamber common- use tunnel 03,03 ', 3,3 ' inlet-duct area is 563mm
2, discharge area is 362mm
2, cooling chamber common- use tunnel 02,02 ', 2,2 ' inlet-duct area is 488mm
2, discharge area is 488mm
2
Use the pile of this metal double polar plates, the assembling rear vertical type is placed, air, hydrogen and cryogen three chambeies and stream; Go out under fluid is enterprising; Make the self gravitation of water generation reaction and cryogen form a kind of motive force, help fluid and flow, improved the water management capabilities of bipolar plates.
Adopt Gambit and Fluent analog platform that the bipolar plates of this embodiment is carried out the fluid distribution and carry out simulation test result demonstration; Gas pressure and speed are distributed very even in each runner of this bipolar plates; Thereby simplified the fuel battery inside water management, can improve battery performance greatly.
Embodiment 2:
Flow field effective area among the embodiment 1 is extended to the distribution runner 05,5 of yin, yang pole plate, makes and distribute runner 05,5 activates, other technology is constant, can get the bipolar plates of same flow Field Design, and this moment, the flow field effective area can be extended to 316cm
2
Embodiment 3:
Airflow field distributes channelizing island 13 and the strong point 14 height and shapes in the runner 05,5 among the change embodiment 1, and wherein channelizing island 13 is shaped as rhombus, highly becomes 0.2mm; Rhombus long-diagonal length is 3mm, and short diagonal length is 1mm, and the strong point 14 is shaped as equilateral triangle; Triangle length of side 1mm; Highly become 0.4mm, other technology is constant, can get another kind of bipolar plates.
Claims (9)
1. help improving the dual polar plates of proton exchange membrane fuel cell that fluid distributes; Connect and compose by the stamping forming cathode and anode unipolar plate of sheet metal correspondence; The cathode and anode unipolar plate is provided with the cathode and anode flow field runner and the potted line (08,8,012,12) at the air chamber common-use tunnel that comprises both sides (01,01 ', 1,1 '), hydrogen chamber common-use tunnel (03,03 ', 3,3 '), cooling chamber common-use tunnel (02,02 ', 2,2 '), middle part; Cathode and anode flow field runner distributes runner (05,5) by the air of yin, yang pole plate intermediate dc field runner (06,6), the cathode-anode plate that communicates with dc fields runner two ends and hydrogen and forms with the cathode-anode plate air that distributes runner to be communicated with and hydrogen import and export runner (04,04 ', 4,4 '); Air and hydrogen are imported and exported runner (04,04 ', 4,4 ') and are communicated with the air chamber common-use tunnel of cathode and anode unipolar plate both sides (01,01 ', 1,1 ') and hydrogen chamber common-use tunnel (03,03 ', 3,3 ') respectively; Air chamber common-use tunnel import (01) communicates with minus plate air outlet slit common conduit (01 ') through minus plate air intlet runner (04), inlet side minus plate air distribution runner (05), minus plate middle straight runner (06), outlet side minus plate air distribution runner (05) and minus plate air outlet slit runner (04 '), and hydrogen chamber common-use tunnel import (3) distributes runner (5), positive plate middle straight runner (6), outlet side positive plate hydrogen to distribute runner (5) and positive plate hydrogen outlet runner (4 ') to communicate with positive plate hydrogen outlet common conduit (1 ') through positive plate hydrogen inlet runner (4), inlet side positive plate hydrogen; Intermediate dc field runner (06,6) is made up of parallel convexity and groove; Air and hydrogen distribute runner (05,5) to be made up of to the positive protruding channelizing island (13) of cathode and anode unipolar plate respectively what arrange by rule; Channelizing island (13) shape is identical; Be the file direction and arrange, the angle between channelizing island (13) file direction and the bipolar plates transverse horizontal line is 30-60 °, spacing 1-3mm between the channelizing island (13); Potted line (08,8,012,12) is along cathode and anode unipolar plate periphery and air chamber common-use tunnel (01,01 ', 1,1 '), hydrogen chamber common-use tunnel (03,03 ', 3,3 ') and cooling chamber common-use tunnel (02,02 ', 2,2 ') periphery; It is characterized in that: said cathode and anode unipolar plate inlet side and outlet side are dissymmetrical structure; Said dissymmetrical structure comprises: cathode and anode unipolar plate inlet side is from the dual-side of middle dc fields runner entrance point to the inlet side end both sides hem width 5-10mm than intermediate dc field runner; Than the wide 5-10mm of intermediate dc field runner side, the area of air chamber common-use tunnel (01,01 ', 1,1 ') and hydrogen chamber common-use tunnel (03,03 ', 3,3 ') import than the big 0.1-0.5 of area of outlet doubly from the end of middle dc fields runner exit end to outlet side for a corresponding side of outlet side cathode and anode unipolar plate; Said cathode and anode unipolar plate air chamber common-use tunnel (01,01 ', 1,1 ') and hydrogen chamber common-use tunnel (03,03 ', 3,3 ') to import and export the limit that runner (04,04 ', 4,4 ') links to each other with air and hydrogen be hypotenuse, hypotenuse and and bipolar plates transverse horizontal line between angle be 30～60 °; Said air and hydrogen distribute runner (05,5) also to comprise respectively to the protruding strong point (14) of cathode and anode unipolar plate reverse side; The strong point (14) shape is identical; The strong point (14) is positioned between the row and row of channelizing island (13) file; Spacing between the strong point (14) is along the spacing 1-3mm of airflow direction, and perpendicular to airflow direction spacing 1-6mm, the dull and stereotyped of the last plane of the strong point (14) on the negative electrode unipolar plate of bipolar plates and relative anode unipolar plate supports mutually; Form cooling chamber and distribute runner, cooling chamber distributes runner to import and export runner and cooling chamber common-use tunnel (02,02 ', 2,2 ') UNICOM through cooling chamber.
2. the dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution according to claim 1; The intermediate dc field runner (06,6) that it is characterized in that said cathode and anode unipolar plate distributes runner (05,5) highly different with air and hydrogen; Intermediate dc field runner (06,6) highly is 0.3-0.5mm; Distributing runner (05,5) highly is 0.4-0.7mm; The runner height is meant the height at the bottom of groove is arrived on protruding top; Intermediate dc field runner (06,6) distributes the low 0.1-0.2mm of runner (05,5) than air and hydrogen; Air and hydrogen distribute the last plane and the protruding last plane of intermediate dc field runner of the channelizing island (13) of runner to be on the same plane, and the lower plane of the air and the hydrogen distribution runner strong point (14) and the lower plane of intermediate dc field runner groove be not on same plane, and the lower plane of the strong point is than the low 0.1-0.2mm of lower plane of intermediate dc field runner groove.
3. according to claim 1ly help improving the dual polar plates of proton exchange membrane fuel cell that fluid distributes, the shape that it is characterized in that said channelizing island (13) is a kind of in square, circular, oval, trapezoidal, triangle and the fusiformis.
4. the dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution according to claim 3; The length of long point-to-point transmission that it is characterized in that the baseplane of said channelizing island (13) shape is 2.0-4.0mm; The width of wide point-to-point transmission is 0.8-1.5mm, highly is 0.2-0.4mm.
5. according to claim 3 helping improved the dual polar plates of proton exchange membrane fuel cell that fluid distributes, and it is characterized in that arrange consistent with airflow direction of length direction of the channelizing island (13) of the unequal shape of length and width in said channelizing island (13) shape.
6. according to claim 1ly help improving the dual polar plates of proton exchange membrane fuel cell that fluid distributes, the shape that it is characterized in that the said strong point (14) is a kind of in circular, oval, square, trapezoidal, triangle and the fusiformis.
7. the dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution according to claim 6; The length of long point-to-point transmission that it is characterized in that the baseplane of the said strong point (14) shape is 1.0-3.0mm; The width of wide point-to-point transmission is 0.8-1.5mm, highly is 0.2-0.4mm.
8. improve the dual polar plates of proton exchange membrane fuel cell that fluid distributes according to described helping of claim 6 the utility model, it is characterized in that arrange consistent of length direction of the strong point (14) of the unequal shape of length and width in the said strong point (14) shape with airflow direction.
9. the dual polar plates of proton exchange membrane fuel cell that helps improving the fluid distribution according to claim 1; Two drift angle places that it is characterized in that the inlet side of said cathode and anode unipolar plate are provided with outside fix mouth (09,9), and outside fix mouth (09,9) is formed bipolar plates assembling outside fix structure with two drift angles (010,10) of outlet side.
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| CN2011202990667U CN202275888U (en) | 2011-08-17 | 2011-08-17 | Metal bipolar plate of PEMFC favorable for improving fluid distribution |
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| CN2011202990667U CN202275888U (en) | 2011-08-17 | 2011-08-17 | Metal bipolar plate of PEMFC favorable for improving fluid distribution |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306805A (en) * | 2011-08-17 | 2012-01-04 | 新源动力股份有限公司 | PEMFC (proton exchange membrane fuel cell) metal bipolar plate conducive to improving fluid distribution |
| CN108767266A (en) * | 2018-06-26 | 2018-11-06 | 李荣旭 | A kind of dual polar plates of proton exchange membrane fuel cell |
| CN111244468A (en) * | 2018-11-28 | 2020-06-05 | 中国科学院大连化学物理研究所 | Bipolar plate suitable for trapezoidal flow battery and application |
| CN112993291A (en) * | 2019-12-16 | 2021-06-18 | 未势能源科技有限公司 | Electrode plate, fuel cell and method for assembling fuel cell |
| CN113258094A (en) * | 2021-05-17 | 2021-08-13 | 张国胜 | Bipolar plate with asymmetric flow field, fuel cell stack and power generation system |
| CN116441429A (en) * | 2023-06-16 | 2023-07-18 | 上海治臻新能源股份有限公司 | Forming die, machining method of monopolar plate, and monopolar plate and bipolar plate assembly |
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2011
- 2011-08-17 CN CN2011202990667U patent/CN202275888U/en not_active Expired - Lifetime
Cited By (9)
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|---|---|---|---|---|
| CN102306805A (en) * | 2011-08-17 | 2012-01-04 | 新源动力股份有限公司 | PEMFC (proton exchange membrane fuel cell) metal bipolar plate conducive to improving fluid distribution |
| CN108767266A (en) * | 2018-06-26 | 2018-11-06 | 李荣旭 | A kind of dual polar plates of proton exchange membrane fuel cell |
| CN111244468A (en) * | 2018-11-28 | 2020-06-05 | 中国科学院大连化学物理研究所 | Bipolar plate suitable for trapezoidal flow battery and application |
| CN111244468B (en) * | 2018-11-28 | 2023-07-25 | 中国科学院大连化学物理研究所 | Bipolar plate suitable for trapezoid flow battery and application |
| CN112993291A (en) * | 2019-12-16 | 2021-06-18 | 未势能源科技有限公司 | Electrode plate, fuel cell and method for assembling fuel cell |
| CN113258094A (en) * | 2021-05-17 | 2021-08-13 | 张国胜 | Bipolar plate with asymmetric flow field, fuel cell stack and power generation system |
| CN113258094B (en) * | 2021-05-17 | 2024-03-12 | 张国胜 | Bipolar plate with asymmetric flow field, fuel cell stack and power generation system |
| CN116441429A (en) * | 2023-06-16 | 2023-07-18 | 上海治臻新能源股份有限公司 | Forming die, machining method of monopolar plate, and monopolar plate and bipolar plate assembly |
| CN116441429B (en) * | 2023-06-16 | 2023-09-19 | 上海治臻新能源股份有限公司 | Forming die, machining method of monopolar plate, and monopolar plate and bipolar plate assembly |
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