CN100464453C - Combined type flow guide polar plate suitable for normal pressure or low pressure fuel cell - Google Patents
Combined type flow guide polar plate suitable for normal pressure or low pressure fuel cell Download PDFInfo
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- CN100464453C CN100464453C CNB2005100260086A CN200510026008A CN100464453C CN 100464453 C CN100464453 C CN 100464453C CN B2005100260086 A CNB2005100260086 A CN B2005100260086A CN 200510026008 A CN200510026008 A CN 200510026008A CN 100464453 C CN100464453 C CN 100464453C
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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
Abstract
The invention discloses a fuel battery air diversion bipolar plate in the normal pressure or lower pressure condition, which is characterized by the following: the air diversion bipolar plate is square diversion bipolar board of integral bifarious combination of air diversion board and cooling water board, which contains air inlet main stream hole, air outlet main stream hole, hydrogen inlet main stream hole, hydrogen outlet main stream hole, cooling water inlet main stream hole, cooling water outlet main stream hole with diagonal distribution for each inlet and outlet hole, wherein several cooling water diversion grooves are set between cooling water board inlet and outlet main stream holes; several hydrogen diversion grooves are set between hydrogen diversion inlet and outlet main stream holes. The invention is not easy to block diversion groove, which operates stably.
Description
Technical field
The present invention relates to fuel cell, relate in particular to the combined type flow guide polar plate that is fit to normal pressure or low-voltage fuel battery.
Background technology
Electrochemical fuel cell is a kind of device that hydrogen fuel and oxidant can be changed into electric energy and product.The internal core parts of this device are membrane electrode (Membrane Electrode Assembly are called for short MEA), and membrane electrode (MEA) is made up of as carbon paper a proton exchange membrane, two porous conductive materials of film two sides folder.The catalyst that contains the initiation electrochemical reaction of even tiny dispersion on two boundary faces of film and carbon paper is as the metal platinum catalyst.The electronics that the membrane electrode both sides can will take place to generate in the electrochemical reaction process with conductive body is drawn by external circuit, constitutes current circuit.
At the anode tap of membrane electrode, fuel can pass porousness diffusion material (carbon paper) by infiltration, and electrochemical reaction takes place on catalyst surface, lose electronics, form cation, cation can pass proton exchange membrane by migration, arrives the other end cathode terminal of membrane electrode.At the cathode terminal of membrane electrode, contain the gas of oxidant (as oxygen), as air, pass porousness diffusion material (carbon paper), and the generation electrochemical reaction obtains electronics on catalyst surface, forms anion by infiltration.The cation of coming in the anion and the anode tap migration of cathode terminal formation reacts, and forms product.
Adopting hydrogen is fuel, and the air that contains oxygen is in the Proton Exchange Membrane Fuel Cells of oxidant (or pure oxygen is an oxidant), and fuel hydrogen has just produced hydrogen cation (or being proton) in the catalytic electrochemical reaction of anode region.Proton exchange membrane helps the hydrogen cation to move to the cathodic region from the anode region.In addition. proton exchange membrane is separated the air-flow and the oxygen containing air-flow of hydrogen fuel, they can not mixed mutually and produces explosion type reaction.
In the cathodic region, oxygen obtains electronics on catalyst surface, forms anion, and moves the hydrogen cation reaction of coming, reaction of formation product water with the anode region.In the Proton Exchange Membrane Fuel Cells that adopts hydrogen, air (oxygen), anode reaction and cathode reaction can be expressed in order to following equation:
Anode reaction: H
2→ 2H
++ 2e
Cathode reaction: 1/2O
2+ 2H
++ 2e → H
2O
In typical Proton Exchange Membrane Fuel Cells, membrane electrode (MEA) generally all is placed in the middle of the pole plate of two conductions, and quarter is milled by die casting, punching press or machinery in the surface that every block of flow guiding electrode plate contacts with membrane electrode, and formation is the guiding gutter of one or more at least.These flow guiding electrode plates can be the pole plates of metal material, also can be the pole plates of graphite material.Water conservancy diversion duct on these flow guiding electrode plates and guiding gutter import fuel and oxidant the anode region and the cathodic region on membrane electrode both sides respectively.In the structure of a Proton Exchange Membrane Fuel Cells monocell, only there is a membrane electrode, the membrane electrode both sides are respectively the guide plate of anode fuel and the guide plate of cathode oxidant.These guide plates are both as the current collector motherboard, also as the mechanical support on membrane electrode both sides, guiding gutter on the guide plate acts as a fuel again and enters the passage of anode, cathode surface with oxidant, and as the passage of taking away the water that generates in the fuel cell operation process.
In order to increase the gross power of whole Proton Exchange Membrane Fuel Cells, two or more monocells can be connected into battery pack or be unified into battery pack by the mode that tiles usually by straight folded mode.In straight folded, in-line battery pack, can there be guiding gutter on the two sides of a pole plate, and wherein one side can be used as the anode guide face of a membrane electrode, and another side can be used as the cathode diversion face of another adjacent membranes electrode, and this pole plate is called bipolar plates.A series of monocell connects together by certain way and forms a battery pack.Battery pack tightens together by front end-plate, end plate and pull bar usually and becomes one.
A typical battery stack generally includes: the water conservancy diversion import and the flow-guiding channel of (1) fuel and oxidant gas are distributed to fuel (as hydrogen, methyl alcohol or the hydrogen-rich gas that obtained by methyl alcohol, natural gas, gasoline) and oxidant (mainly being oxygen or air) in the guiding gutter of each anode, cathode plane equably after reforming; (2) import and export and the flow-guiding channel of cooling fluid (as water) are evenly distributed to cooling fluid in each battery pack inner cooling channel, the heat absorption that hydrogen in the fuel cell, the exothermic reaction of oxygen electrochemistry are generated and take battery pack out of after dispel the heat; (3) outlet of fuel and oxidant gas and corresponding flow-guiding channel, fuel gas and oxidant gas are when discharging, and portability goes out the liquid that generates in the fuel cell, the water of steam state.Usually, the import and export of all fuel, oxidant, cooling fluid are all opened on the end plate of fuel battery or on two end plates.
Proton Exchange Membrane Fuel Cells can be used as the dynamical system of delivery vehicles such as all cars, ship, can make portable, portable, fixed Blast Furnace Top Gas Recovery Turbine Unit (TRT) again.The Proton Exchange Membrane Fuel Cells electricity generation system must comprise fuel cell pack, fuel hydrogen supply, air supply, cooling heat dissipation, various piece such as control and electric energy output automatically.Stable and the reliability of Proton Exchange Membrane Fuel Cells operation is very important to the application as car, ship power system or movable Blast Furnace Top Gas Recovery Turbine Unit (TRT).Stable and the reliability that wherein improves fuel cell pack is crucial.
At present, in the design of pem fuel cell stack flow-guide double-pole plate, in order to reduce air, hydrogen resistance, the single cross sectional dimensions of general air, hydrogen chute is all bigger, and the radical of air, hydrogen chute is less; In addition, in order to increase oxidant air, fuel hydrogen to electrode reaction district rapid diffusion, the air flow channel on air, the hydrogen flow guide plate often is designed to snakelike or having many bends or curves shape, makes fluid pass through to form turbulent flow, help to the diffusion of electrode interior reaction zone, as shown in Figure 1.
There is following technological deficiency in the design of the water conservancy diversion field of air, hydrogen flow guide polar plate in the above-mentioned fuel cell pack:
Because the radical of air, hydrogen chute is less and bendability is very big, and air, hydrogen stream slot length are longer, therefore the product water of fuel cell generation is easy in the appearance of electrode cathode side and air flow channel is stopped up, and the product water that fuel cell generates also is easy to occur in the electrode anode side by reverse osmosis, and the hydrogen chute is stopped up.When particularly fuel cell was used as car, ship power system or movable Blast Furnace Top Gas Recovery Turbine Unit (TRT), because the working conditions change of dynamical system is very big, the power output of fuel cell also altered a great deal, and the water of fuel cell generation is easier like this stops up air, hydrogen chute.
In addition, for the water slug guiding gutter that prevents that fuel cell from generating, often adopt the air and hydrogen metering ratio that improves fuel cell operation, just strengthen air, hydrogen flowing quantity, with excessive air, hydrogen is taken product water out of fuel cell, this operation method is actually the operating pressure that has improved fuel cell, increased operating cost, reduced fail safe, and run counter to fuel cell design become is fit to normal pressure or low pressure operation (especially as car, during the ship engine) development trend, also greatly reduce simultaneously fuel cell system efficient, because excessive air is wasted or excessive hydrogen is recycled conveying, must cause the mechanical consumption of carrying air or circulating hydrogen to increase, thereby reduce fuel cell system efficient.
Once more, when flow guide plate of fuel cell air flow channel in service or hydrogen chute stopped up, it was very low even negative value occurs to show certain indivedual cell voltage that stop up, and causes the fuel cell operation instability, electrode can be punctured when serious, and the entire cell heap is damaged.
Summary of the invention
Purpose of the present invention be exactly provide in order to overcome the defective that above-mentioned prior art exists that a kind of guiding gutter is difficult for stopping up, stable suitable normal pressure or the combined type flow guide polar plate of low-voltage fuel battery.
Purpose of the present invention can be achieved through the following technical solutions: the combined type flow guide polar plate that is fit to normal pressure or low-voltage fuel battery, it is characterized in that, this flow-guide double-pole plate is opposing and combined integrated with the hydrogen flow guide plate rectangle flow-guide double-pole plate of air baffle and cooling fluid plate, this flow-guide double-pole plate comprises air inlet main flow hole, the air main flow hole of giving vent to anger, hydrogen air inlet main flow hole, the hydrogen main flow hole of giving vent to anger, cooling fluid import main flow hole, cooling fluid outlet main flow hole, each fluid advances, go out the two ends that the main flow hole is arranged on the rectangle flow-guide double-pole plate, the air of described air baffle advances, the main flow of giving vent to anger is provided with many air flow channel between the hole, the cooling fluid of described cooling fluid plate advances, the outlet main flow is provided with many cooling fluid chutes between the hole, and the hydrogen of described hydrogen flow guide plate advances, be provided with many hydrogen chutes between the main flow of the giving vent to anger hole.
The assembly of described flow-guide double-pole plate is: air baffle and cooling fluid plate are opposing, and it is glued together with adhesives with independent hydrogen flow guide plate, form flow-guide double-pole plate, the front of this flow-guide double-pole plate is the airflow guiding field, the back side is the hydrogen flow guiding field, and intermediate course is a but fluid field of conduction cooling.
Between described each fluid main flow hole, between each fluid main flow hole and air, hydrogen chute or the cooling fluid chute, the periphery of air, hydrogen flow guide plate or cooling fluid plate is provided with seal groove.
Described many air or hydrogen chute are told by air or hydrogen air inlet main flow hole, are arc the trend generally and distribute, and compile in air or the hydrogen main flow hole of giving vent to anger again.
Described air, hydrogen chute and air advances, hydrogen enters the main flow hole, the connecting portion that air goes out, hydrogen goes out the main flow hole are provided with the metal bridge envelope, air, hydrogen can from this metal bridge envelope below by.
The segmentation that the described many air of telling from air, hydrogen air inlet main flow hole, hydrogen chute are divided into two again after through one section straight shape flow field at least, merging through uniting two into one at least again behind the whole arc flow field again, again form many air, hydrogen chute, these many air, hydrogen chute compile in air, the hydrogen main flow hole of giving vent to anger after through one section straight shape flow field.
The described many cooling fluid chutes of being told by cooling fluid import main flow hole are after the one section straight shape flow field of passing by, the segmentation that half cooling fluid chute 90 degree turns round and is divided into two at least, the segmentation that second half cooling fluid chute turns round and is divided into two at least from opposite direction 90 degree, two parts cooling fluid chute is passed by behind the arc flow field, at least the merging that unites two into one respectively again forms many cooling fluid chutes again and compiles to cooling fluid outlet main flow hole.
Place, diagonal angle on the described cooling fluid inner splint respectively establishes a voltage detecting groove.
The place, diagonal angle of described air, hydrogen flow guide plate respectively establishes a location hole.
Groove depth * groove width=0.2～1.0 * 0.2～2mm of described air, hydrogen and cooling fluid chute, the radical of groove are 10～80.
Compared with prior art, the present invention has the following advantages:
Adopting many primary airs, hydrogen chute that air, hydrogen on air, the hydrogen flow guide plate are advanced main flow hole and air, hydrogen goes out the main flow hole and couples together, and every air, hydrogen sow (channel) are told at least two air, hydrogen chute after through one section flow field, and at least two air, hydrogen chutes are merged into primary air, hydrogen chute again through behind the whole flow field.General flow direction on air, the hydrogen whole flow field from import to outlet is the bow type, rather than crooked back and forth repeatedly in the existing Fig. 1 technology of picture, and the route that still flows is not long, and flow resistance is big; Every sow (channel) told at least two chutes again, greatly reduces flow resistance; And air, hydrogen can enter air, hydrogen flow guide field by many sow (channel)s, also can go out air, hydrogen flow guide field by many sow (channel)s, are difficult for water blockoff.
So adopt the invention described above technology, the pressure differential between air, hydrogen are imported and exported is very little, is beneficial to the normal pressure or the low pressure operation of fuel cell.
In addition, above-mentioned technology is also adopted in cooling fluid water conservancy diversion field, makes the cooling fluid flow resistance little, and the cooling fluid turnover is had a narrow range of temperature, and temperature of fuel cell operation is even.
And, because the many sow (channel)s that hydrogen, air, cooling fluid import are told are behind the one section straight shape flow field of passing by, the above segmentation of root that all is divided into two at least of every sow (channel), all of segmentation chutes are behind most of water conservancy diversion field of passing by, at least unite two into one the respectively merging of chute of root forms many sow (channel)s again and compiles to outlet main flow hole.The invention described above technology can guarantee that the area of each hydrogen, air, cooling fluid turnover fluid bore at flow-guide double-pole plate is as far as possible little, occupy the effecting reaction area of whole flow-guide double-pole plate thereby reduced these fluid bore, thereby increased the volume of fuel cell gravimetric specific power.
Description of drawings
Fig. 1 is the structural representation of existing guide plate;
Fig. 2 is the structural representation of flow-guide double-pole plate of the present invention front air baffle;
Fig. 3 is the structural representation of the another kind of flow-guide double-pole plate of the present invention front air baffle;
Fig. 4 is the structural representation of cooling fluid clamping plate in the middle of the flow-guide double-pole plate of the present invention;
Fig. 5 is the structural representation of flow-guide double-pole plate reverse side hydrogen flow guide plate of the present invention.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
As Fig. 2, Fig. 4, shown in Figure 5, the combined type flow guide polar plate that is fit to normal pressure fuel battery, be of a size of 150 * 200 * 1.5mm, to be air baffle 1 with cooling fluid plate 2 opposing and the rectangle flow-guide double-pole plate combined integrated with hydrogen flow guide plate 16 for this flow-guide double-pole plate, this flow-guide double-pole plate comprises air inlet main flow hole 3, the air main flow hole 4 of giving vent to anger, hydrogen air inlet main flow hole 5, the hydrogen main flow hole 6 of giving vent to anger, cooling fluid import main flow hole 7, cooling fluid outlet main flow hole 8, each fluid advances, go out the two ends that the main flow hole is arranged on the rectangle flow-guide double-pole plate, the air of described air baffle 1 advances, the main flow of giving vent to anger is provided with many air flow channel 9 between the hole, the cooling fluid of described cooling fluid plate 2 advances, the outlet main flow is provided with many cooling fluid chutes 10 between the hole, and the hydrogen of described hydrogen flow guide plate 16 advances, be provided with many hydrogen chutes 17 between the main flow of the giving vent to anger hole.
The assembly of described flow-guide double-pole plate is: air baffle 1 is opposing with cooling fluid plate 2, and it is glued together with independent hydrogen flow guide plate 16 usefulness adhesivess, form flow-guide double-pole plate, the front of this flow-guide double-pole plate is the airflow guiding field, the back side is the hydrogen flow guiding field, and intermediate course is a but fluid field of conduction cooling.
Between described each fluid main flow hole, between each fluid main flow hole and air, hydrogen chute or the cooling fluid chute, the periphery of air, hydrogen flow guide plate or cooling fluid plate is provided with seal groove 11.
Described many air or hydrogen chute 9,17 are told by air or hydrogen air inlet main flow hole, are arc the trend generally and distribute, and compile in air or the hydrogen main flow hole of giving vent to anger again.
Described air, hydrogen chute and air advances, hydrogen enters the main flow hole, the connecting portion that air goes out, hydrogen goes out the main flow hole are provided with metal bridge envelope 12, air, hydrogen can from this metal bridge envelope 12 below by.
The described many cooling fluid chutes of being told by cooling fluid import main flow hole 10 are after the one section straight shape flow field of passing by, the segmentation (forming a chute) that half cooling fluid chute 90 degree turns round and is divided into two at least, the segmentation that second half cooling fluid chute turns round and is divided into two at least from opposite direction 90 degree, two parts cooling fluid chute is passed by behind the arc flow field, at least the merging that unites two into one respectively again forms many cooling fluid chutes again and compiles to cooling fluid outlet main flow hole.
Place, diagonal angle on the described cooling fluid inner splint 2 respectively establishes a voltage detecting groove 13.
The place, diagonal angle of described air, hydrogen flow guide plate respectively establishes a location hole 14.
Groove depth * the groove width of described air, hydrogen chute=0.5 * 0.8mm, chute radical are 13, the groove depth * groove width of described cooling fluid chute=0.5 * 0.8mm, and the sow (channel) radical is 10, total radical of a chute is 20.
As Fig. 3, Fig. 4, shown in Figure 5, the combined type flow guide polar plate that is fit to normal pressure fuel battery, be of a size of 150 * 200 * 1.5mm, to be air baffle 1 with cooling fluid plate 2 opposing and the rectangle flow-guide double-pole plate combined integrated with hydrogen flow guide plate 16 for this flow-guide double-pole plate, this flow-guide double-pole plate comprises air inlet main flow hole 3, the air main flow hole 4 of giving vent to anger, hydrogen air inlet main flow hole 5, the hydrogen main flow hole 6 of giving vent to anger, cooling fluid import main flow hole 7, cooling fluid outlet main flow hole 8, each fluid advances, go out the two ends that the main flow hole is arranged on the rectangle flow-guide double-pole plate, the air of described air baffle 1 advances, the main flow of giving vent to anger is provided with many air flow channel 9 between the hole, the cooling fluid of described cooling fluid plate 2 advances, the outlet main flow is provided with many cooling fluid chutes 10 between the hole, and the hydrogen of described hydrogen flow guide plate 16 advances, be provided with many hydrogen chutes 17 between the main flow of the giving vent to anger hole.
The segmentation (forming a chute 15,18) that the described many air of telling from air, hydrogen air inlet main flow hole, hydrogen chute 9,17 are divided into two again after through one section straight shape flow field at least, merging through uniting two into one at least again behind the whole arc flow field again, again form many air, hydrogen chute 9,17, these many air, hydrogen chute compile in air, the hydrogen main flow hole of giving vent to anger after through one section straight shape flow field.
Groove depth * the groove width of described air, hydrogen chute=0.5 * 0.8mm, the sow (channel) radical is 13, and total radical of a chute is 26, the groove depth * groove width of described cooling fluid chute=0.5 * 0.8mm, the sow (channel) radical is 10, and total radical of a chute is 20.
All the other structures are identical with embodiment 1.
What adopted in the fuel cell pack among the embodiment 1 is a kind of fuel cell air flow guide polar plate of suitable atmospheric air operation, be of a size of 150 * 200 * 1.5mm, present embodiment 3 is fuel cell air flow guide polar plates of a kind of suitable low-pressure air operation, be of a size of 150 * 200 * 1.5mm, other the design all with embodiment 1 in identical, different is: air flow channel is dark * and groove width=0.3 * 0.8mm, sow (channel) is 20 with the radical of a chute, air enters the flow resistance that run into than big the embodiment 1 from this guide plate import, so the air operating pressure approximately is 0.5 atmospheric pressure (relative pressure), other cooling fluid water conservancy diversion fields are identical with embodiment 1 with the hydrogen flow guide field structure.
What adopted in the fuel cell pack among the embodiment 1 is a kind of fuel cell hydrogen flow guide polar plate of suitable normal pressure hydrogen operation, be of a size of 150 * 200 * 1.5mm, present embodiment 4 is fuel cell hydrogen flow guide polar plates of a kind of suitable low pressure hydrogen operation, be of a size of 150 * 200 * 1.5mm, other the design all with embodiment 1 in identical, different is: hydrogen stream groove depth * groove width=0.2 * 0.8mm, the radical of sow (channel) are 12, and the radical of a chute is 24; Hydrogen enters the flow resistance that run into than big the embodiment 1 from this guide plate import, so the hydrogen operating pressure approximately is 0.5 atmospheric pressure (relative pressure), other cooling fluid water conservancy diversion fields, air conducting field structure are identical with embodiment 1.
Claims (8)
1. the combined type flow guide polar plate that is fit to normal pressure or low-voltage fuel battery, it is characterized in that, this flow-guide double-pole plate is opposing and combined integrated with the hydrogen flow guide plate rectangle flow-guide double-pole plate of air baffle and cooling fluid plate, this flow-guide double-pole plate comprises air inlet main flow hole, the air main flow hole of giving vent to anger, hydrogen air inlet main flow hole, the hydrogen main flow hole of giving vent to anger, cooling fluid import main flow hole, cooling fluid outlet main flow hole, each fluid advances, go out the two ends that the main flow hole is arranged on the rectangle flow-guide double-pole plate, the air of described air baffle advances, the main flow of giving vent to anger is provided with many air flow channel between the hole, the cooling fluid of described cooling fluid plate advances, the outlet main flow is provided with many cooling fluid chutes between the hole, and the hydrogen of described hydrogen flow guide plate advances, be provided with many hydrogen chutes between the main flow of the giving vent to anger hole; The assembly of described flow-guide double-pole plate is: air baffle and cooling fluid plate are opposing, and it is glued together with adhesives with independent hydrogen flow guide plate, form flow-guide double-pole plate, the front of this flow-guide double-pole plate is the airflow guiding field, the back side is the hydrogen flow guiding field, and intermediate course is a but fluid field of conduction cooling; Described many air or hydrogen chute are told by air or hydrogen air inlet main flow hole, are arc the trend generally and distribute, and compile in air or the hydrogen main flow hole of giving vent to anger again.
2. the combined type flow guide polar plate of suitable normal pressure according to claim 1 or low-voltage fuel battery, it is characterized in that, between described each fluid main flow hole, between each fluid main flow hole and air, hydrogen chute or the cooling fluid chute, the periphery of air, hydrogen flow guide plate or cooling fluid plate is provided with seal groove.
3. the combined type flow guide polar plate of suitable normal pressure according to claim 1 or low-voltage fuel battery, it is characterized in that, described air, hydrogen chute and air advances, hydrogen enters the main flow hole, the connecting portion that air goes out, hydrogen goes out the main flow hole is provided with metal bridge envelope, air, hydrogen can from this metal bridge envelope below by.
4. the combined type flow guide polar plate of suitable normal pressure according to claim 1 or low-voltage fuel battery, it is characterized in that, the segmentation that the described many air of telling from air, hydrogen air inlet main flow hole, hydrogen chute are divided into two again after through one section straight shape flow field at least, merging through uniting two into one at least again behind the whole arc flow field again, again form many air, hydrogen chute, these many air, hydrogen chute compile in air, the hydrogen main flow hole of giving vent to anger after through one section straight shape flow field.
5. the combined type flow guide polar plate of suitable normal pressure according to claim 1 or low-voltage fuel battery, it is characterized in that, the described many cooling fluid chutes of being told by cooling fluid import main flow hole are after the one section straight shape flow field of passing by, the segmentation that half cooling fluid chute 90 degree turns round and is divided into two at least, the segmentation that second half cooling fluid chute turns round and is divided into two at least from opposite direction 90 degree, two parts cooling fluid chute is passed by behind the arc flow field, at least the merging that unites two into one respectively again forms many cooling fluid chutes again and compiles to cooling fluid outlet main flow hole.
6. be fit to the combined type flow guide polar plate of normal pressure or low-voltage fuel battery according to claim 1 or 5, it is characterized in that the place, diagonal angle on the described cooling fluid inner splint respectively establishes a voltage detecting groove.
7. the combined type flow guide polar plate of suitable normal pressure according to claim 1 or low-voltage fuel battery is characterized in that, the place, diagonal angle of described air, hydrogen flow guide plate respectively establishes a location hole.
8. the combined type flow guide polar plate of suitable normal pressure according to claim 1 or low-voltage fuel battery, it is characterized in that, groove depth * groove width=0.2～1.0 * 0.2～2mm of described air, hydrogen and cooling fluid chute, the radical of groove are 10～80.
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| CNB2005100260086A CN100464453C (en) | 2005-05-20 | 2005-05-20 | Combined type flow guide polar plate suitable for normal pressure or low pressure fuel cell |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104538664B (en) * | 2014-12-21 | 2017-11-10 | 北京工业大学 | A kind of cooling system with enhanced heat exchange and effective holding stack temperature uniformity |
| CN105914385B (en) * | 2016-06-28 | 2018-12-11 | 北京氢璞创能科技有限公司 | High-power water-cooling electric pile structure |
| CN109449456A (en) * | 2017-08-21 | 2019-03-08 | 上海电气集团股份有限公司 | Bipolar plates, Proton Exchange Membrane Fuel Cells and dual-electrode plates preparation method |
| CN110380076A (en) * | 2019-07-15 | 2019-10-25 | 深圳市雄韬电源科技股份有限公司 | A kind of metal plate fuel cell pile and preparation method thereof |
| CN115020737A (en) * | 2022-05-31 | 2022-09-06 | 上海电气集团股份有限公司 | Flow guiding polar plate of fuel cell |
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| US20020110723A1 (en) * | 2000-12-21 | 2002-08-15 | Farkash Ron H. | Variable pressure drop plate design |
| CN1507097A (en) * | 2002-12-10 | 2004-06-23 | ��̫ȼ�ϵ�ؿƼ��ɷ�����˾ | Integrated double-plate assembly for fuel cell pack |
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| CN1866592A (en) | 2006-11-22 |
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