CN102623730B - Variable-runner low-temperature and low-voltage rectangular fuel cell - Google Patents
Variable-runner low-temperature and low-voltage rectangular fuel cell Download PDFInfo
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- CN102623730B CN102623730B CN201210118872.9A CN201210118872A CN102623730B CN 102623730 B CN102623730 B CN 102623730B CN 201210118872 A CN201210118872 A CN 201210118872A CN 102623730 B CN102623730 B CN 102623730B
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- carbon electrode
- fuel cell
- pipe connecting
- connecting plate
- electrode plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a variable-runner low-temperature and low-voltage rectangular fuel cell, which comprises an upper intake pipe connecting plate and a lower exhaust pipe connecting plate, wherein at least two carbon polar plates which are vertically distributed in parallel are tightly pressed between the intake pipe connecting plate and the exhaust pipe connecting plate, an exchange membrane is clamped between every two adjacent carbon polar plates, the upper surface and the lower surface of each carbon polar plate are respectively provided with a plurality of channels which are parallel to one another and respectively have a rectangular cross section, the depth of each channel gradually decreases along the length direction of the channel, and a convection current technology is adopted so that the change directions of the channels on each upper surface and each lower surface are opposite. According to the fuel cell disclosed by the invention, the runner volume is increased, the structural utilization rate is increased, the effective working area of the fuel cell is increased, the problem of work non-uniformity inside the fuel cell is solved effectively, and the reliability of the exchange membrane is increased.
Description
Technical field
The present invention belongs to new energy field, relates to fuel cell technology, is specifically related to a kind of bend flow channel low-temp low-pressure rectangle fuel cell, can be applicable to fuel cell electric vehicle.
Background technology
In recent years, because the day of petroleum resources is becoming tight and the problem of environmental pollution, electric automobile has started to stride forward to industrialization direction.In various electric automobiles, fuel cell electric vehicle have advantages of energy-saving and environmental protection and efficiency of energy utilization high, become the target of developed country and the competition of each large automobile production enterprise technology.Existing many fuel cell electric vehicle of showing or demonstrate develop and test at present.
In fuel cell technology, in order to be suitable for lorry loading, use, vehicle fuel battery all adopts the rectangle grouping assembly method of modular.Therefore the supplied gas of slotting on the carbon electrode plate that, the square fuel cell manufacture of every block length is used circulation.After two blocks of carbon electrode plates compress, the contact area of notch is exactly effective work area of fuel cell.Effectively the size of work area just determines the power of fuel cell to a certain extent.By literature search, the gas flow in existing fuel cell has been square groove, and square groove is decile layout design with the entity part of not slotting.
At present, the structure of most of fuel cells is all fairly simple, has the following deficiency or shortcoming: the first, and because carbon electrode plate is fragile material, in order not affect the intensity of carbon electrode plate, carbon electrode plate institute evolution shape notch can not strengthen; The second, square groove sectional area equates everywhere, makes gas flow front end air pressure higher, easily makes exchange membrane distortion, even break, and gas flow rear end air pressure is lower, causes gas flow rate to become very slow, affects operating efficiency; The 3rd, uiform section runner is not considered the factors such as the operating efficiency of gas and gas effciency, and therefore exchange membrane condition of work is everywhere inconsistent, has reduced the ability to work of whole fuel cell.
Summary of the invention
The present invention seeks to: for the problems referred to above, a kind of novel bend flow channel low-temp low-pressure rectangle fuel cell is proposed, this battery has increased runner volume, improved structure utilance, increased effective work area of fuel cell, efficiently solve a not difficult problem for inhomogeneities of fuel battery inside work, and improved the reliability of exchange membrane.
Technical scheme of the present invention is: described bend flow channel low-temp low-pressure rectangle fuel cell, comprise the blast pipe connecting plate that is positioned at the air inlet pipe connecting plate of top and is positioned at below, between described air inlet pipe connecting plate and blast pipe connecting plate, be pressed with the carbon electrode plate of at least two upper and lower parallel distributions, and all accompany exchange membrane between every two blocks of adjacent carbon electrode plates, the upper surface of every block of carbon electrode plate and lower surface are all shaped with some conduits that be parallel to each other and that cross section is rectangular, along the length direction of described conduit, the degree of depth of described conduit gradually from depth to shallow, and the change in depth direction of every carbon electrode plate upper surface conduit and the change in depth opposite direction of lower surface conduit.
As preferably, the degree of depth h=1.5-0.5 of arbitrary bottom land position × (y/L) mm on described conduit,
Wherein: h represents the degree of depth of arbitrary bottom land position on described conduit, y represents that described bottom land positional distance conduit is compared with the distance of deep end, and L represents the total length of conduit.
As preferably, the upper surface of every block of carbon electrode plate and lower surface are all shaped with an air intake duct and an exhaust duct, the air intake duct of every carbon electrode plate upper surface and exhaust duct are all connected with all conduits of this piece carbon electrode plate upper surface, the air intake duct of every carbon electrode plate lower surface and exhaust duct are all connected with all conduits of this piece carbon electrode plate lower surface, described air intake duct has air admission hole, and described exhaust duct has steam vent.
As preferably, on described air inlet pipe connecting plate, offer air intake duct screwed hole and fuel gas air inlet pipe screwed hole that homonymy is arranged, on described blast pipe connecting plate, have air exhaust duct screwed hole and fuel gas blast pipe screwed hole that homonymy is arranged.
Advantage of the present invention is:
First, fuel cell of the present invention has changed the square groove uiform section runner structure of conventional fuel cell carbon electrode plate, and adopts the square flow passage structure of variable cross-section, does not affect the thickness of square groove bottom carbon electrode plate, in the case of not affecting the intensity of carbon electrode plate, increased runner volume;
The second, after adjacent two blocks of carbon electrode plates compress, this fuel cell carbon electrode plate structure gas bend flow channel has been considered the operating state of fuel battery inside, has improved the power of fuel cell;
The 3rd, in fuel cell of the present invention, one-sided screwed hole is opened as entering gas distribution structure in one side of connecting plate, another side is opened one-sided screwed hole as entering gas formation, in the situation that not affecting square groove bottom carbon electrode plate thickness, improve structure utilance, improved the reliability of exchange membrane and the job stability of fuel cell;
Four, on fuel cell air inlet pipe connecting plate, open one-sided screwed hole as entering gas distribution structure, be convenient to assembling.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be described further:
Fig. 1 is the structural representation of carbon electrode plate in the embodiment of the present invention;
Fig. 2 is the structural representation of adjacent two blocks of carbon electrode plates in the embodiment of the present invention;
Fig. 3 is the structural representation of air inlet pipe connecting plate and blast pipe connecting plate in the embodiment of the present invention;
Wherein: 1 carbon electrode plate, 1-1 conduit, 1-2 air intake duct, 1-2-1 air admission hole, 1-3 exhaust duct, 1-3-1 steam vent, 2 exchange membranes, 3 air inlet pipe connecting plates, 3-1 air intake duct screwed hole, 3-2 fuel gas air inlet pipe screwed hole, 4 blast pipe connecting plates, 4-1 air exhaust duct screwed hole, 4-2 fuel gas blast pipe screwed hole, 5 bolt connecting holes.
Embodiment
As as Fig. 1, shown in Fig. 2 and Fig. 3, the bend flow channel low-temp low-pressure rectangle fuel cell of the present embodiment comprises the air inlet pipe connecting plate 3 that is positioned at top and the blast pipe connecting plate 4 that is positioned at below, between described air inlet pipe connecting plate 3 and blast pipe connecting plate 4, be pressed with the carbon electrode plate 1 of at least two (only showing two in Fig. 1) upper and lower parallel distributions, and all accompany exchange membrane 2 between every two blocks of adjacent carbon electrode plates 1, the upper surface of every block of carbon electrode plate 1 and lower surface are all shaped with some the conduit 1-1 that the cross section being parallel to each other is rectangular, conduit 1-1 is as gas flow, for gas communication.
On air inlet pipe connecting plate 3, blast pipe connecting plate 4 and each block of carbon electrode plate 1, be all shaped with eight bolt connecting holes 5, thereby by bolt, they linked together.
Compared with conventional fuel cell, the maximum feature of the present embodiment fuel cell is: along the degree of depth of the length direction of described conduit 1-1, described conduit gradually from depth to shallow, and the change in depth direction of every carbon electrode plate upper surface conduit and the change in depth opposite direction of lower surface conduit---for same carbon electrode plate, if the degree of depth of its upper surface conduit shoals from left to right gradually, the degree of depth of its lower surface conduit just deepens from left to right gradually so.
Adopt after this structure, can, in the situation that not affecting carbon electrode plate intensity, increase runner volume; After neighbouring two blocks of carbon electrode plates 1 compress, this fuel cell carbon electrode plate structure gas bend flow channel has been considered the operating state of fuel battery inside, has improved the power of fuel cell;
As preferably, degree of depth h=1.5-0.5 × (y/L) mm of the upper arbitrary bottom land of described conduit 1-1 position.Wherein: h represents the degree of depth of arbitrary bottom land position on described conduit, y represents that described bottom land positional distance conduit is compared with the distance of deep end, and L represents the total length of conduit.That is to say, conduit 1-1 is 1.5mm compared with the degree of depth of deep end, compared with the degree of depth of shallow end, be 1mm, from conduit compared with deep end to conduit compared with shallow end, the degree of depth of conduit gradually from depth to shallow, and meeting h=1.5-0.5 × (y/L) mm, the conduit that adopts in addition upper and lower gaseous exchange technology that upper surface and lower surface are set changes in the opposite direction.
As shown in Figure 1, the upper surface of every block of carbon electrode plate 1 and lower surface are all shaped with an air intake duct 1-2 and an exhaust duct 1-3.The air intake duct 1-2 of every carbon electrode plate upper surface and exhaust duct 1-3 are all connected with all conduit 1-1 of this piece carbon electrode plate upper surface, the air intake duct 1-2 of every carbon electrode plate lower surface and exhaust duct 1-3 are all connected with all conduit 1-1 of this piece carbon electrode plate lower surface, described air intake duct has air admission hole 1-2-1, and described exhaust duct has steam vent 1-3-1.
As shown in Figure 3, this example offers air intake duct screwed hole 3-1 and fuel gas air inlet pipe screwed hole 3-2 at described air inlet pipe connecting plate 3, and air intake duct screwed hole 3-1 and fuel gas air inlet pipe screwed hole 3-2 open the same side at described air inlet pipe connecting plate 3.On described blast pipe connecting plate 4, have air exhaust duct screwed hole 4-1 and fuel gas blast pipe screwed hole 4-2, and air exhaust duct screwed hole 4-1 and fuel gas blast pipe screwed hole 4-2 open the same side at blast pipe connecting plate 4.
During enforcement, air intake duct is connected with air intake duct screwed hole 3-1, fuel gas air inlet pipe is connected with fuel gas air inlet pipe screwed hole 3-2, air exhaust duct is connected with air exhaust duct screwed hole 4-1, fuel gas blast pipe is connected with fuel gas blast pipe screwed hole 4-2.During work, low-pressure fuel gas is passed into fuel gas air inlet pipe, fuel gas flows into corresponding air admission hole 1-2-1 through fuel gas air inlet pipe screwed hole 3-2, then flows into the air intake duct 1-2 of each carbon electrode plate upper surface, distributes the conduit 1-1 that flows into carbon electrode plate upper surface; Meanwhile, in like manner low-pressure air is passed into air intake duct, air flows into corresponding air admission hole 1-2-1 through air intake duct screwed hole 3-1, then flows into the air intake duct of each carbon electrode plate lower surface, distributes the conduit 1-1 that flows into carbon electrode plate lower surface; Mobile fuel gas and airborne oxygen in the upper and lower sinusoid conduit of adjacent carbons pole plate 1-1, through accompanying the effect of exchange membrane 2 in the middle of carbon electrode plate, there is electrochemical reaction, produce steam with do not have the fuel gas of complete reaction to flow to exhaust duct 1-3, finally focus on the fuel gas blast pipe of steam vent 1-3-1 through being connected with fuel gas blast pipe screwed hole 4-2, flow out this rectangle fuel cell; In like manner, in the sinusoid conduit below each carbon electrode plate, the steam of generation flows to exhaust duct together with there is no complete surplus air, then focuses on the air exhaust duct of steam vent through being connected with air exhaust duct screwed hole 4-1, flows out this rectangle fuel cell.The electronics producing on exchange membrane focuses on blast pipe connecting plate 4 and forms a large amount of electric charges, externally exports the electric weight of certain voltage and electric current.
Certainly, above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow people can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformation or modification that according to the present invention, the Spirit Essence of main technical schemes does, within all should being encompassed in protection scope of the present invention.
Claims (3)
1. a bend flow channel low-temp low-pressure rectangle fuel cell, comprise the blast pipe connecting plate (4) that is positioned at the air inlet pipe connecting plate (3) of top and is positioned at below, between described air inlet pipe connecting plate (3) and blast pipe connecting plate (4), be pressed with the carbon electrode plate (1) of at least two upper and lower parallel distributions, and all accompany exchange membrane (2) between every adjacent two blocks of carbon electrode plates (1), the upper surface of every block of carbon electrode plate (1) and lower surface are all shaped with some conduits that be parallel to each other and that cross section is rectangular (1-1), it is characterized in that: the degree of depth of described conduit (1-1) along the length direction of described conduit (1-1) gradually from depth to shallow, and the change in depth direction of every carbon electrode plate upper surface conduit and the change in depth opposite direction of lower surface conduit,
Degree of depth h=1.5-0.5 × (y/L) mm of the upper arbitrary bottom land of described conduit (1-1) position;
Wherein: h represents the degree of depth of arbitrary bottom land position on described conduit, y represents that described bottom land positional distance conduit is compared with the distance of deep end, and L represents the total length of conduit.
2. bend flow channel low-temp low-pressure rectangle fuel cell according to claim 1, it is characterized in that: the upper surface of every block of carbon electrode plate (1) and lower surface are all shaped with an air intake duct (1-2) and an exhaust duct (1-3), the air intake duct (1-2) of every carbon electrode plate upper surface and exhaust duct (1-3) are all connected with all conduits (1-1) of this piece carbon electrode plate upper surface, the air intake duct (1-2) of every carbon electrode plate lower surface and exhaust duct (1-3) are all connected with all conduits (1-1) of this piece carbon electrode plate lower surface, described air intake duct (1-2) has air admission hole (1-2-1), described exhaust duct (1-3) has steam vent (1-3-1).
3. bend flow channel low-temp low-pressure rectangle fuel cell according to claim 1, it is characterized in that: on described air inlet pipe connecting plate (3), offer air intake duct screwed hole (3-1) and fuel gas air inlet pipe screwed hole (3-2) that homonymy is arranged, on described blast pipe connecting plate (4), offer air exhaust duct screwed hole (4-1) and fuel gas blast pipe screwed hole (4-2) that homonymy is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210118872.9A CN102623730B (en) | 2012-04-20 | 2012-04-20 | Variable-runner low-temperature and low-voltage rectangular fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210118872.9A CN102623730B (en) | 2012-04-20 | 2012-04-20 | Variable-runner low-temperature and low-voltage rectangular fuel cell |
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| Publication Number | Publication Date |
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| CN102623730A CN102623730A (en) | 2012-08-01 |
| CN102623730B true CN102623730B (en) | 2014-04-16 |
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| CN201210118872.9A Expired - Fee Related CN102623730B (en) | 2012-04-20 | 2012-04-20 | Variable-runner low-temperature and low-voltage rectangular fuel cell |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9644277B2 (en) | 2012-08-14 | 2017-05-09 | Loop Energy Inc. | Reactant flow channels for electrolyzer applications |
| CN104718651B (en) | 2012-08-14 | 2017-07-28 | 环能源公司 | Fuel cell flows raceway groove and flow field |
| WO2017161449A1 (en) | 2016-03-22 | 2017-09-28 | Loop Energy Inc. | Fuel cell flow field design for thermal management |
| CN108767288B (en) * | 2018-06-11 | 2020-11-10 | 西安交通大学 | Variable cross-section tree-shaped fuel cell flow channel structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050186462A1 (en) * | 2004-01-12 | 2005-08-25 | Raymond Belanger | PEM fuel cell stack with floating current collector plates |
| CN101091279A (en) * | 2004-12-28 | 2007-12-19 | Utc电力公司 | Varied fuel cell oxidant flow channel depth resulting in fewer cooler plates |
| CN101800317A (en) * | 2010-04-09 | 2010-08-11 | 新源动力股份有限公司 | Proton exchange membrane fuel cell bipolar plate with gas flow field |
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2012
- 2012-04-20 CN CN201210118872.9A patent/CN102623730B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050186462A1 (en) * | 2004-01-12 | 2005-08-25 | Raymond Belanger | PEM fuel cell stack with floating current collector plates |
| CN101091279A (en) * | 2004-12-28 | 2007-12-19 | Utc电力公司 | Varied fuel cell oxidant flow channel depth resulting in fewer cooler plates |
| CN101800317A (en) * | 2010-04-09 | 2010-08-11 | 新源动力股份有限公司 | Proton exchange membrane fuel cell bipolar plate with gas flow field |
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| CN102623730A (en) | 2012-08-01 |
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