CN201122629Y - Proton exchanging film fuel battery - Google Patents
Proton exchanging film fuel battery Download PDFInfo
- Publication number
- CN201122629Y CN201122629Y CNU2007200877729U CN200720087772U CN201122629Y CN 201122629 Y CN201122629 Y CN 201122629Y CN U2007200877729 U CNU2007200877729 U CN U2007200877729U CN 200720087772 U CN200720087772 U CN 200720087772U CN 201122629 Y CN201122629 Y CN 201122629Y
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- CN
- China
- Prior art keywords
- exchange membrane
- proton exchange
- closed channel
- membrane fuel
- oxidant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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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- Fuel Cell (AREA)
Abstract
The utility model relates to a proton exchange membrane fuel cell, which is especially suitable for hydrogen/air proton exchange membrane fuel cells. The proton exchange membrane fuel cell comprises a plurality of single cells, and each single cell comprises an anode plate, an anode diffuser layer, a cathode plate, a cathode diffuser layer and a membrane electrode; the cathode plate comprises a through groove channel used for realizing oxidizer gas communication and provided with an oxidizer gas inlet opening and an oxidizer gas outlet opening; a sealed groove channel used for humidification for the proton exchange membrane and provided with an inlet opening and without an outlet opening; a reducing agent inlet opening and a reducing agent outlet opening which are used for the reducing agent inlet and outlet; a cooling agent inlet opening and a cooling agent outlet opening which are used for cooling. The battery cathode of the utility model can perform even distribution to humidification water, an the proton exchange membrane fuel cell has the advantages of wide application range, stable and reliable work, high efficiency and long service life.
Description
Technical field
The utility model relates to a proton exchanging film fuel battery, is particularly suitable for hydrogen/empty Proton Exchange Membrane Fuel Cells.
Background technology
Proton Exchange Membrane Fuel Cells has the energy conversion efficiency height, adapts to the different capacity requirement, cold-starting is fast and environment is not had advantages such as pollution and noiseless, so can be advantageously applied to electric automobile, submarine and removable power supply.H in the Proton Exchange Membrane Fuel Cells course of work
2Enter diffusion layer by the plate flow field channel, arrive anode catalyst layer by anode diffusion layer then.Under the anode catalyst effect, H
2Be dissociated into H
+With electronegative electronics.H
+Pass proton exchange membrane and arrive negative electrode, electronics then arrives negative electrode by external circuit.O
2Enter diffusion layer by the cathode plate passage, arrive cathode catalysis layer by cathode diffusion layer again.O under the cathod catalyst effect
2Be decomposed into oxonium ion and and H
+Generate water with electron reaction.
The conduction of proton in film needs the existence of water.The linear decline of conductivity that water content in the film descends and causes it will cause battery performance to descend.This situation is more serious in battery pack.The film dehydration of certain monocell is dried up in battery pack, and film loses the ability of proton conducting, and the dehydration area just to the next door diffusion, causes the inefficacy of whole monocell at last like this.But remaining monocell also in work, just has electric current and continues to flow through this layer battery, and it just is equivalent to the film dehydration that a resistance heating makes adjacent layers, causes whole battery group to lose efficacy at last.
In order to solve the dehydration difficult problem of film in the Proton Exchange Membrane Fuel Cells group, generally to give the reacting gas humidification, as adopt direct aqueous water injection humidification by humidification system, humidification water is along with reacting gas enters battery pack.Because battery pack adopts public air supply channel to give all monocell air feed, this is difficult to guarantee that the flow velocity of every layer of gas is the same, to such an extent as to humidification water is in the inside of battery pack uneven distribution.
Summary of the invention
The purpose of this utility model is, overcome the uneven shortcoming of water distribution of existing battery pack inside, provide a kind of target flow field structure to carry out improved, Proton Exchange Membrane Fuel Cells group and adopt that additional humidification system, negative electrode can carry out equally distributed, wide accommodation to humidification water, working stability is reliable, efficient is high, the Proton Exchange Membrane Fuel Cells of long service life.
The technical solution of the utility model is: a proton exchanging film fuel battery, and it comprises some monocells, each monocell comprises positive plate, anode diffusion layer, minus plate, cathode diffusion layer, membrane electrode; Comprise on the described minus plate: a, be used to realize the conducting conduit with oxidant air inlet and oxidant gas outlet of oxidant gas conducting; B, be used for having import and ventless closed channel to the proton exchange membrane humidification; C, the reducing agent import that is used for the reducing agent turnover and reducing agent outlet; D, the coolant inlet that is used to cool off and coolant outlet.
The further technical scheme that has additional technical feature on the basis of technique scheme is:
The import of described closed channel is the oxidant air inlet of conducting conduit.
Described closed channel is uniformly distributed on the minus plate, and evenly distribute at interval with the conducting conduit, its head end is at the oxidant inlet place, terminal is a blind end, the position is with respect to the afterbody or the middle part of conducting conduit, and this closed channel is used to make aqueous water to be evaporated to the diffusion layer of vaporous water by porous to spread to film.
The terminal detent position of described closed channel is with respect to the segment distance of being separated by before the oxidant outlet of the afterbody of conducting conduit.
The distance of being separated by before the oxidant outlet of the terminal detent position of described closed channel with respect to the afterbody of conducting conduit is 3～10 millimeters.
The terminal detent position of described closed channel is with respect to the middle part of oxidant inlet and oxidant outlet.
Described oxidant gas is an air, and reducing agent gas is hydrogen, and cooling agent is a deionized water.
Described conducting conduit and closed channel be shaped as snakelike or straight parallel linear.
Described closed channel cross section physical dimension is less than conducting conduit cross section physical dimension.
Described closed channel cross section physical dimension is half of conducting conduit cross section physical dimension.
Effect of the present utility model is: the utility model fuel cell wide accommodation, working stability is reliable, efficient is high, long service life.Be in particular in: in the time of a, operation of fuel cells, the humidification water that closed channel is assembled is given the proton exchange membrane humidification by diffusion layer, realizes the secondary distribution to humidification water, evenly distributes; In the time of b, bearing power variation, battery is also changing the humidification water yield, and closed channel is equivalent to a cistern and plays an adjusting humidification water yield; Humidification water evenly distributes in battery in c, the sealing chute; D, battery are when hot operation, and the humidification evaporation of water is realized the even distribution and the refrigerating function of battery pack temperature.
Description of drawings
Fig. 1 is the front view of the utility model minus plate
Fig. 2 is the A-A cutaway view of Fig. 1
Fig. 3 is the monocell cross sectional representation
Embodiment
As Figure 1-3, a described proton exchanging film fuel battery, it is composed in series by several (can be tens of to hundreds of) monocells, and each monocell comprises positive plate 13, anode diffusion layer 12, minus plate 14, cathode diffusion layer 10, membrane electrode 11; Become assembly behind the monocell polyphone, two ends are fixed with the plate that is locked; The monocell number needs by different occasions and decides; Have on the described minus plate 14: a, be used to realize the conducting conduit 4 with oxidant air inlet 1 and oxidant gas outlet 6 of oxidant gas conducting; B, be used for having import and ventless closed channel 5 to the proton exchange membrane humidification; C, the reducing agent import 3 that is used for the reducing agent turnover and reducing agent outlet 8; D, the coolant inlet 2 and the cooling agent that are used to cool off go out 7.The import of described closed channel 5 is oxidant air inlets 1 of conducting conduit 4.Described closed channel 5 is uniformly distributed on the minus plate 14, and evenly distribute at interval with conducting conduit 4, its head end is at oxidant inlet 1 place, terminal is a blind end, the position is with respect to the afterbody or the middle part of conducting conduit 4, and this closed channel 5 is used to make aqueous water to be evaporated to the diffusion layer of vaporous water by porous to spread to film.Additional embodiments is: the segment distance of being separated by before the oxidant outlet 6 of the terminal detent position of described closed channel 5 with respect to the afterbody of conducting conduit 4, this distance is 3～10 millimeters, is preferably 5 millimeters, perhaps elects 3 millimeters as, or repeatedly is 10 millimeters.Also have embodiment to be: the terminal detent position of described closed channel 5 is with respect to the middle part of oxidant inlet 1 with oxidant outlet 6.Described oxidant gas is an air, and reducing agent gas is hydrogen, and cooling agent is a deionized water.Described conducting conduit 4 and closed channel 5 are shaped as parallel lines, also have embodiment be elect as snakelike.In the general design of described closed channel 5 cross section physical dimensions is less than conducting conduit 4 cross section physical dimensions, preferably: closed channel 5 cross section physical dimensions are half of conducting conduit 4 cross section physical dimensions, according to practical situations decision closed channel 5 sizes.
The gas conduit can be by different manufacturing process, make as process for machining, Shooting Technique etc.As the cathode flow field of the fuel battery of 100 (layer) monocells altogether of a 20KW, its length is 300 millimeters, and wide is 150 millimeters, and the cross section physical dimension of conducting conduit 4 is 10 * 10 millimeters, and the cross section physical dimension of closed channel 5 is 5 * 5 millimeters.Conducting conduit 4 is from oxidant inlet 1 to oxidant outlet 6.Closed channel 5 is from oxidant inlet 1, before oxidant outlet 65 millimeters or elect 10 millimeters sealings as.
As shown in Figure 3, the hole in the monocell cathode diffusion layer 10 all is hydrophobic hole.Conducting conduit 4 and closed channel 5 pressure differentials are very little, and this moment, humidification water was difficult to directly cross carbon paper by hydrophobic treatment, can only generate water vapour by evaporation and could arrive membrane electrode by diffusion layer.Therefore humidification mechanism is that aqueous water in the closed channel is evaporated to the diffusion layer of vaporous water by porous and spreads to film.Sealing chute 5 is spaced apart with conducting conduit 4, and is even in the flow field surface distributed as far as possible.
Rights protection scope of the present utility model is not limited to the foregoing description.
Claims (10)
1, a proton exchanging film fuel battery, it comprises some monocells, each monocell comprises positive plate (13), anode diffusion layer (12), minus plate (14), cathode diffusion layer (10), membrane electrode (11) is characterized in that, described minus plate comprises on (14): a, be used to realize the conducting conduit (4) with oxidant air inlet (1) and oxidant gas outlet (6) of oxidant gas conducting; B, be used for having import and ventless closed channel (5) to the proton exchange membrane humidification; C, the reducing agent import (3) that is used for the reducing agent turnover and reducing agent outlet (8); D, the coolant inlet (2) that is used to cool off and coolant outlet (7).
2, Proton Exchange Membrane Fuel Cells as claimed in claim 1 is characterized in that, the import of described closed channel (5) is the oxidant air inlet (1) of conducting conduit (4).
3, Proton Exchange Membrane Fuel Cells as claimed in claim 1, it is characterized in that, described closed channel (5) is uniformly distributed on the minus plate (14), and evenly distribute at interval with conducting conduit (4), its head end is located at oxidant inlet (1), terminal is a blind end, and the position is with respect to the afterbody or the middle part of conducting conduit (4), and this closed channel (5) is used to make aqueous water to be evaporated to the diffusion layer of vaporous water by porous to spread to film.
4, Proton Exchange Membrane Fuel Cells as claimed in claim 1 is characterized in that, the terminal detent position of described closed channel (5) is with respect to the oxidant outlet (6) of the afterbody of conducting conduit (4) segment distance of being separated by before.
5, Proton Exchange Membrane Fuel Cells as claimed in claim 4 is characterized in that, the distance that the terminal detent position of described closed channel (5) is separated by before with respect to the oxidant outlet (6) of the afterbody of conducting conduit (4) is 3～10 millimeters.
6, Proton Exchange Membrane Fuel Cells as claimed in claim 1 is characterized in that, the terminal detent position of described closed channel (5) is with respect to the middle part of oxidant inlet (1) with oxidant outlet (6).
7, Proton Exchange Membrane Fuel Cells as claimed in claim 1 is characterized in that, described oxidant gas is an air, and reducing agent gas is hydrogen, and cooling agent is a deionized water.
8, Proton Exchange Membrane Fuel Cells as claimed in claim 1 is characterized in that, conducting conduit (4) and closed channel (5) be shaped as snakelike or straight parallel linear.
9, Proton Exchange Membrane Fuel Cells as claimed in claim 1 is characterized in that, closed channel (5) cross section physical dimension is less than conducting conduit (4) cross section physical dimension.
10, Proton Exchange Membrane Fuel Cells as claimed in claim 9 is characterized in that, closed channel (5) cross section physical dimension is half of conducting conduit (4) cross section physical dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200877729U CN201122629Y (en) | 2007-10-29 | 2007-10-29 | Proton exchanging film fuel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200877729U CN201122629Y (en) | 2007-10-29 | 2007-10-29 | Proton exchanging film fuel battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201122629Y true CN201122629Y (en) | 2008-09-24 |
Family
ID=40009869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200877729U Expired - Fee Related CN201122629Y (en) | 2007-10-29 | 2007-10-29 | Proton exchanging film fuel battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201122629Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249161A (en) * | 2016-08-11 | 2016-12-21 | 上海交通大学 | Proton Exchange Membrane Fuel Cells monocell test device under dry hydrogen test condition |
| CN113178593A (en) * | 2021-04-12 | 2021-07-27 | 武汉氢能与燃料电池产业技术研究院有限公司 | Electric pile structure of proton exchange film fuel cell |
-
2007
- 2007-10-29 CN CNU2007200877729U patent/CN201122629Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249161A (en) * | 2016-08-11 | 2016-12-21 | 上海交通大学 | Proton Exchange Membrane Fuel Cells monocell test device under dry hydrogen test condition |
| CN113178593A (en) * | 2021-04-12 | 2021-07-27 | 武汉氢能与燃料电池产业技术研究院有限公司 | Electric pile structure of proton exchange film fuel cell |
| CN113178593B (en) * | 2021-04-12 | 2023-02-28 | 武汉氢能与燃料电池产业技术研究院有限公司 | Electric pile structure of proton exchange film fuel cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hubei Greatsea Newpower Technology Co., Ltd. Assignor: No.712 Inst., China Ship Heavy Industry Group Co. Contract record no.: 2010420000149 Denomination of utility model: Air feed and cooling system of porton exchange film fuel battery Granted publication date: 20080924 License type: Exclusive License Record date: 20100906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20141029 |
|
| EXPY | Termination of patent right or utility model |