CN102623730A - 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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- CN102623730A CN102623730A CN2012101188729A CN201210118872A CN102623730A CN 102623730 A CN102623730 A CN 102623730A CN 2012101188729 A CN2012101188729 A CN 2012101188729A CN 201210118872 A CN201210118872 A CN 201210118872A CN 102623730 A CN102623730 A CN 102623730A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The 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 FC-EV.
Background technology
In recent years, because the day of petroleum resources is becoming tight and environmental pollution problems, electric automobile has begun to stride forward to the industrialization direction.In various electric automobiles, FC-EV has energy-saving and environmental protection and the high advantage of efficiency of energy utilization, becomes the target of developed country and each big automobile production enterprise technology competition.Existing at present many FC-EVs of showing or demonstrating develop and make an experiment.
In fuel cell technology, use in order to be suitable for lorry loading, 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 circulates.After two blocks of carbon electrode plates compressed, the contact area of notch was exactly effective work area of fuel cell.Effectively the size of work area just determines the power of fuel cell to a certain extent.Through the document retrieval, the gas flow in the existing fuel cell has been square groove, and square groove is the five equilibrium 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, because the carbon electrode plate is a fragile material, in order not influence the intensity of carbon electrode plate, carbon electrode plate institute evolution shape notch can not strengthen; The second, the square groove sectional area equates everywhere, makes gas flow front end air pressure higher, make the exchange membrane distortion easily, even break, and gas flow rear end air pressure is lower, and it is very slow that cause gas flow speed becomes, and influences operating efficiency; The 3rd, the uiform section runner is not considered factors such as operating efficiency and the gas effciency of gas, so exchange membrane condition of work everywhere is inconsistent, has reduced the ability to work of whole fuel cell.
Summary of the invention
The present invention seeks to: to 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 the runner volume, has improved the structure utilance, has increased effective work area of fuel cell; Efficiently solve the not difficult problem of 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 air inlet pipe connecting plate that is positioned at the top and the blast pipe connecting plate that is positioned at the below; Be pressed with at least two blocks of carbon electrode plates of parallel distribution up and down between said air inlet pipe connecting plate and the blast pipe connecting plate; 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 all are shaped on some the conduits that be parallel to each other and the cross section is rectangular, and along the degree of depth of the length direction of said conduit, said conduit gradually from depth to shallow, and the change in depth of the change in depth direction of every carbon electrode plate upper surface conduit and lower surface conduit is in the opposite direction.
As preferably, the mm of the degree of depth h=1.5-0.5 of arbitrary bottom land position on the said conduit * (y/L),
Wherein: h representes the degree of depth of arbitrary bottom land position on the said conduit, and y representes said bottom land position apart from the distance of conduit than deep end, and L representes the total length of conduit.
As preferably; The upper surface of every block of carbon electrode plate and lower surface all are shaped on an air intake duct and an exhaust duct; The air intake duct of every carbon electrode plate upper surface and exhaust duct all are 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 all are connected with all conduits of this piece carbon electrode plate lower surface, and said air intake duct has air admission hole, and said exhaust duct has steam vent.
As preferably, offer air intake duct screwed hole and fuel gas air inlet pipe screwed hole that homonymy is arranged on the said air inlet pipe connecting plate, have air exhaust duct screwed hole and fuel gas blast pipe screwed hole that homonymy is arranged on the said blast pipe connecting plate.
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 influence the thickness of square groove bottom carbon electrode plate; Under the situation of the intensity that does not influence the carbon electrode plate, increased the runner volume;
The second, after adjacent two blocks of carbon electrode plates compressed, this fuel cell carbon electrode plate structure gas bend flow channel had been considered the operating state of fuel battery inside, had improved the power of fuel cell;
The 3rd; In the fuel cell of the present invention; One-sided screwed hole is opened as getting into gas distribution structure in one side of connecting plate, and another side is opened one-sided screwed hole as entering gas formation, under the situation that does not influence square groove bottom carbon electrode plate thickness; Improve the structure utilance, improved the reliability of exchange membrane and the job stability of fuel cell;
Four, open one-sided screwed hole on the fuel cell air inlet pipe connecting plate as getting into gas distribution structure, be convenient to assembling.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further introduction:
Fig. 1 is the structural representation of carbon electrode plate in the embodiment of the invention;
Fig. 2 is the structural representation of adjacent two blocks of carbon electrode plates in the embodiment of the invention;
Fig. 3 is the structural representation of air inlet pipe connecting plate and blast pipe connecting plate in the embodiment of the invention;
Wherein: 1 carbon electrode plate, 1-1 conduit, 1-2 air intake duct, 1-2-1 air admission hole; The 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 like Fig. 1, Fig. 2 and shown in Figure 3; The bend flow channel low-temp low-pressure rectangle fuel cell of present embodiment comprises air inlet pipe connecting plate 3 that is positioned at the top and the blast pipe connecting plate 4 that is positioned at the below; Be pressed with at least two (only showing two among Fig. 1) carbon electrode plate 1 of parallel distribution up and down between said air inlet pipe connecting plate 3 and the blast pipe connecting plate 4; 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 all are shaped on some the conduit 1-1 that the cross section that is parallel to each other is rectangular, and conduit 1-1 is as gas flow, for gas communication.
All be shaped on eight bolt connecting holes 5 on air inlet pipe connecting plate 3, blast pipe connecting plate 4 and each the piece carbon electrode plate 1, thereby they linked together through bolt.
Compare with conventional fuel cell; The maximum characteristics of present embodiment fuel cell are: the length direction of the said conduit 1-1 in edge, the degree of depth of said conduit are gradually from depth to shallow; And the change in depth direction of every carbon electrode plate upper surface conduit and the change in depth of lower surface conduit are in the opposite direction---promptly for same block of 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.
After adopting this structure, can under the situation that does not influence carbon electrode plate intensity, increase the runner volume; After two blocks of neighbouring carbon electrode plates 1 compressed, this fuel cell carbon electrode plate structure gas bend flow channel had been considered the operating state of fuel battery inside, had improved the power of fuel cell;
As preferably, said conduit 1-1 goes up the mm of the degree of depth h=1.5-0.5 of arbitrary bottom land position * (y/L).Wherein: h representes the degree of depth of arbitrary bottom land position on the said conduit, and y representes said bottom land position apart from the distance of conduit than deep end, and L representes the total length of conduit.That is to say; Conduit 1-1 is 1.5mm than the degree of depth of deep end; The degree of depth than shallow end is 1mm, from conduit than deep end to conduit than shallow end, the degree of depth of conduit is gradually from depth to shallow; And satisfying the mm of h=1.5-0.5 * (y/L), the conduit that adopts gaseous exchange technology up and down that upper surface and lower surface are set in addition changes in the opposite direction.
As shown in Figure 1, the upper surface of every block of carbon electrode plate 1 and lower surface all are shaped on 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 all are 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 all are connected with all conduit 1-1 of this piece carbon electrode plate lower surface; Said air intake duct has air admission hole 1-2-1, and said 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 said 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 said air inlet pipe connecting plate 3.Have air exhaust duct screwed hole 4-1 and fuel gas blast pipe screwed hole 4-2 on the said blast pipe connecting plate 4, 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; The 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, the fuel gas blast pipe is connected with fuel gas blast pipe screwed hole 4-2.During work; Low-pressure fuel gas is fed the 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; Simultaneously, in like manner with low-pressure air bubbling air air inlet pipe, 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; The fuel gas and the airborne oxygen that about the adjacent carbons pole plate, flow among the sinusoid conduit 1-1; Through accompanying the effect of exchange membrane 2 in the middle of the carbon electrode plate; Electrochemical reaction takes place; The steam that produces with do not have the fuel gas of complete reaction to flow to exhaust duct 1-3, finally focus on steam vent 1-3-1 warp and the fuel gas blast pipe that fuel gas blast pipe screwed hole 4-2 is connected, flow out this rectangle fuel cell; In like manner in the sinusoid conduit below each carbon electrode plate, the steam of generation focuses on steam vent warp and the air exhaust duct that air exhaust duct screwed hole 4-1 is connected again with there not being complete surplus air to flow to exhaust duct, flows out this rectangle fuel cell.The electronics that on exchange membrane, produces 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, the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let people can understand content of the present invention and implements according to this, can not limit protection scope of the present invention with this.The all spirit of main technical schemes is done according to the present invention equivalent transformation or modification all should be encompassed within protection scope of the present invention.
Claims (4)
1. bend flow channel low-temp low-pressure rectangle fuel cell; Comprise be positioned at the top air inlet pipe connecting plate (3) be positioned at below blast pipe connecting plate (4); Be pressed with at least two blocks of carbon electrode plates (1) of parallel distribution up and down between said air inlet pipe connecting plate (3) and the blast pipe connecting plate (4); 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 all are shaped on some the conduits (1-1) that be parallel to each other and the cross section is rectangular; It is characterized in that: along the degree of depth of length direction, the said conduit (1-1) of said conduit (1-1) gradually from depth to shallow, and the change in depth of the change in depth direction of every carbon electrode plate upper surface conduit and lower surface conduit is in the opposite direction.
2. bend flow channel low-temp low-pressure rectangle fuel cell according to claim 1 is characterized in that: said conduit (1-1) is gone up the mm of the degree of depth h=1.5-0.5 of arbitrary bottom land position * (y/L);
Wherein: h representes the degree of depth of arbitrary bottom land position on the said conduit, and y representes said bottom land position apart from the distance of conduit than deep end, and L representes the total length of conduit.
3. bend flow channel low-temp low-pressure rectangle fuel cell according to claim 1 and 2; It is characterized in that: the upper surface of every block of carbon electrode plate (1) and lower surface all are shaped on 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) all are 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) all are connected with all conduits (1-1) of this piece carbon electrode plate lower surface; Said air intake duct (1-2) has air admission hole (1-2-1), and said exhaust duct (1-3) has steam vent (1-3-1).
4. bend flow channel low-temp low-pressure rectangle fuel cell according to claim 1 and 2; It is characterized in that: offer air intake duct screwed hole (3-1) and fuel gas air inlet pipe screwed hole (3-2) that homonymy is arranged on the said air inlet pipe connecting plate (3), offer air exhaust duct screwed hole (4-1) and fuel gas blast pipe screwed hole (4-2) that homonymy is arranged on the said blast pipe connecting plate (4).
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 |
Publications (2)
| Publication Number | Publication Date |
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| CN102623730A true CN102623730A (en) | 2012-08-01 |
| CN102623730B CN102623730B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579263A (en) * | 2012-08-14 | 2018-01-12 | 环能源公司 | Fuel cell flows raceway groove and flow field |
| CN108767288A (en) * | 2018-06-11 | 2018-11-06 | 西安交通大学 | A kind of tree-like fuel cell channel structure of variable cross-section |
| US10930942B2 (en) | 2016-03-22 | 2021-02-23 | Loop Energy Inc. | Fuel cell flow field design for thermal management |
| US11060195B2 (en) | 2012-08-14 | 2021-07-13 | Loop Energy Inc. | Reactant flow channels for electrolyzer applications |
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 |
-
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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579263A (en) * | 2012-08-14 | 2018-01-12 | 环能源公司 | Fuel cell flows raceway groove and flow field |
| CN107579263B (en) * | 2012-08-14 | 2020-12-01 | 环能源公司 | Fuel cell flow channel and flow field |
| US11060195B2 (en) | 2012-08-14 | 2021-07-13 | Loop Energy Inc. | Reactant flow channels for electrolyzer applications |
| US11489175B2 (en) | 2012-08-14 | 2022-11-01 | Loop Energy Inc. | Fuel cell flow channels and flow fields |
| US10930942B2 (en) | 2016-03-22 | 2021-02-23 | Loop Energy Inc. | Fuel cell flow field design for thermal management |
| US11901591B2 (en) | 2016-03-22 | 2024-02-13 | Loop Energy Inc. | Fuel cell flow field design for thermal management |
| CN108767288A (en) * | 2018-06-11 | 2018-11-06 | 西安交通大学 | A kind of tree-like fuel cell channel structure of variable cross-section |
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| Publication number | Publication date |
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| CN102623730B (en) | 2014-04-16 |
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Inventor after: Tian Yudong Inventor after: Zou Hairong Inventor before: Tian Dongyu Inventor before: Zou Hairong |
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Free format text: CORRECT: INVENTOR; FROM: TIAN DONGYU ZOU HAIRONG TO: TIAN YUDONG ZOU HAIRONG |
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