CN103280590A - A proton exchange membrane fuel cell cathode pulsation system and its adjustment method - Google Patents
A proton exchange membrane fuel cell cathode pulsation system and its adjustment method Download PDFInfo
- Publication number
- CN103280590A CN103280590A CN2013101643668A CN201310164366A CN103280590A CN 103280590 A CN103280590 A CN 103280590A CN 2013101643668 A CN2013101643668 A CN 2013101643668A CN 201310164366 A CN201310164366 A CN 201310164366A CN 103280590 A CN103280590 A CN 103280590A
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- Prior art keywords
- air throttle
- pulsation
- proton exchange
- aperture
- fuel cell
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- 239000000446 fuel Substances 0.000 title claims abstract description 37
- 230000010349 pulsation Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000012528 membrane Substances 0.000 title abstract 2
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 230000003584 silencer Effects 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000004044 response Effects 0.000 claims description 8
- 238000003487 electrochemical reaction Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 29
- 238000009826 distribution Methods 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000036647 reaction Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Classifications
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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
A cathode pulsation system of a proton exchange membrane fuel cell comprises a filtering silencer, an air supply machine, a humidification system and a fuel cell stack module, wherein a discharge pipeline of the humidification system is connected with a throttle valve. The working method is to perform basic adjustment of the throttle valve and then perform pulsation adjustment of the throttle valve. The invention has the beneficial effects that: the pulsation adjustment strengthens disturbance on a boundary layer of the humidification system, improves the heat and mass transfer efficiency of the humidification system, and improves the conversion efficiency of the moisture content by about 0.5-1%; the distribution state of the water content in the galvanic pile is changed, so that the distribution state of the water content from an inflow field to an outflow field in the galvanic pile is changed from gradient distribution to uniform distribution, the gaseous water and the liquid water are uniformly distributed, the particle size of liquid water drops is reduced, and the reliability of the galvanic pile is improved; can effectively discharge the water generated by the battery in time.
Description
Technical field
The invention belongs to fuel cell field, relate in particular to fuel battery cathode with proton exchange film side water management.
Background technology
PEMFC is fuel with pure hydrogen, and working temperature is lower than 100 ℃, and the water that cell reaction generates exists with liquid state, and the general flow field that suits of adopting guarantees that reactant purge gas goes out cell reaction and generates water.But the existence of a large amount of aqueous waters can cause the reduction of oxygen transfer speed in the oxygen cathode diffusion layer, increases concentration polarization, reduces battery performance.Therefore people are seeking suitable operating condition, and what make battery generation water can discharge battery with the vaporous water form more than 90%.So not only can increase oxygen transfer speed in the oxygen cathode gas diffusion layers, but also can reduce the heat load that battery pack used heat is discharged.Be Effective water management, more battery is generated water discharge battery with the vaporous water form and in time battery is generated aqueous water discharge battery, four class improved procedures are arranged in the prior art: the first kind is to the material material improvement of fuel cell module itself or the improvement of project organization; Second class is the improvement of fuel cell system workflow, as: improved the fuel cell power source with exhaust gas recirculatioon of water management, a kind of fuel battery inside water management device based on electroosmotic pump; The 3rd class is the improvement of control strategy; The 4th class is comprehensive, and workflow and control strategy are made up improvement.
The deficiencies in the prior art are the distributions that do not change the fuel battery inside water content, still can not discharge battery timely and effectively and generate water.
Summary of the invention
The objective of the invention is the distribution of pile interior liquid water for a change, the discharge of strengthening aqueous water provides a kind of fuel battery cathode with proton exchange film pulsation system and control method thereof.
Thinking of the present invention is: add the controlled valve member of aperture in system, the aperture by the control valve member makes the pressure oscillation of fluid in the pipeline, thereby changes the distribution of fuel battery inside water content, will flocculate and effectively discharge at ducted drop.
For achieving the above object, technical scheme of the present invention is: a kind of fuel battery cathode with proton exchange film pulsation system, comprise filtering silencer, air feed machinery, humidification system and galvanic pile module of fuel cell, air is muffler after filtration, again through being delivered to humidification system after the pressurization of air feed machinery, enter galvanic pile module of fuel cell behind the humidification, after electrochemical reaction takes place, tail emptying gas enters humidification system, dry and enter in the environment by discharge pipe, it is characterized in that described fuel battery cathode with proton exchange film pulse system also comprises air throttle, described air throttle is connected in the discharge pipe of humidification system.
A kind of fuel battery cathode with proton exchange film pulsation system of the present invention is characterized in that described air throttle can replace with the valve that other apertures can quick adjustment, regulating cycle≤10mS.
The control method of a kind of fuel battery cathode with proton exchange film pulsation system of the present invention, it is characterized in that described control method comprises that the basis of air throttle is regulated and pulsation is regulated, it is the adjusting that the control of fuel cell cathode pressure requires that the basis of described air throttle is regulated, the concrete adjusting is the aperture that requires to regulate air throttle according to the fuel battery negative pole pressure control of setting, it is on the basis of air throttle basis adjusting that the pulsation of described air throttle is regulated, in cathode pressure control claimed range, according to the requirement of the ripple frequency F adjusting of pulsing, concrete adjusting is according to the ripple frequency of setting, the aperture of regulating with the basis is the initial phase aperture, by the difference between amplitude A adjusting throttle opening and the initial phase aperture.Still in cathode pressure control claimed range, i.e. the adjusting of initial phase aperture A amplitude can guarantee that still cathode pressure control is in the scope that requires to the aperture of air throttle after difference was reconciled.The span of described amplitude A is 0.1～1 °.
The control method of a kind of fuel battery cathode with proton exchange film pulsation system of the present invention is characterized in that the response frequency of described ripple frequency F≤air throttle, and the product of air throttle response time (s of unit) with response frequency is 1s.
The invention has the beneficial effects as follows:
1, pulsation is regulated and has been strengthened the humidification system boundary layer perturbation, has improved the heat and mass efficient of humidification system, and the humid enthalpy conversion efficiency improves 0.5～1% approximately;
2, the distribution of the water content that has changed pile inside is regulated in pulsation, make pile inside from go into the flow field to the water content distribution that goes out the flow field from by the gradient distribution transformation for evenly distributing, vaporous water, liquid water distribution are even, and the liquid water droplets particle diameter diminishes, and has promoted the reliability of pile;
3, the distribution of the water content that has changed pile inside is regulated in pulsation, can discharge battery timely and effectively and generate water.
Description of drawings
Fig. 1 is fuel battery negative pole system flow schematic diagram
In the accompanying drawing, 1, filtering silencer; 2, air feed machinery; 3, humidification system; 4, galvanic pile module of fuel cell; 5, air throttle.
Embodiment
The fuel battery cathode with proton exchange film pulsation system comprises filtering silencer, air feed machinery, humidification system and galvanic pile module of fuel cell, outside air is after filtration behind the muffler, through being delivered to humidification system after the pressurization of air feed machinery, enter galvanic pile module of fuel cell behind the humidification, after electrochemical reaction takes place, tail emptying gas enters humidification system, enters in the environment after drying, and is connected with air throttle in the discharge pipe of humidification system.Air throttle can also be the valve that aperture can quick adjustment.The regulating cycle of air throttle is 5ms, i.e. the fastest 200Hz that reaches of response frequency.
The control of engine system cathode pressure is at 50 ± 2kPa among the embodiment, now adopt the mode of closed-loop adjustment to realize that the basis of air throttle regulates, make cathode pressure control at 50 ± 1kPa, under different current loads, the throttle opening difference, be example with electric current 150A, after regulating through the basis, this moment, the angle of air throttle was 45 °, the adjusting of pulsing afterwards, ripple frequency 200Hz, 1 ° of ripple amplitude is under 45 ° at initial phase namely, pulse, if cathode pressure is not controlled within 50 ± 2kPa, reducing ripple amplitude is 0.9 °, does not continue to reduce ripple amplitude as still not satisfying.In the present embodiment, ripple frequency 200Hz, 1 ° of ripple amplitude still can keep cathode pressure control within 50 ± 2kPa.
Result of the test shows, and do not have comparing of pulsation system, and the enthalpy wheel humid enthalpy conversion efficiency of present embodiment has improved 1%, and pile is through durability test, with the rate of decay of pile voltage unit time under the electric current than drop by half under the pulse free.
Claims (4)
1. fuel battery cathode with proton exchange film pulsation system, comprise filtering silencer (1), air feed machinery (2), humidification system (3) and galvanic pile module of fuel cell (4), air is muffler (1) after filtration, be delivered to humidification system (3) after passing through air feed machinery (2) pressurization again, enter galvanic pile module of fuel cell (4) behind the humidification, after electrochemical reaction takes place, tail emptying gas enters humidification system (3), dry and enter in the environment by discharge pipe, it is characterized in that described fuel battery cathode with proton exchange film pulse system also comprises air throttle (5), described air throttle (5) is connected in the discharge pipe of humidification system (3).
2. according to the described a kind of fuel battery cathode with proton exchange film pulsation system of claim 1, it is characterized in that described air throttle (5) comprises the valve that aperture can quick adjustment, regulating cycle≤10mS.
3. the control method of the described a kind of fuel battery cathode with proton exchange film pulsation system of claim 1, it is characterized in that described control method comprises that the basis of air throttle (5) is regulated and pulsation is regulated, it is the adjusting that the control of fuel cell cathode pressure requires that the basis of described air throttle (5) is regulated, the concrete adjusting is: control the aperture that requires to regulate air throttle (5) according to the fuel battery negative pole pressure of setting, it is on the basis of air throttle basis adjusting that the pulsation of described air throttle (5) is regulated, in cathode pressure control claimed range, according to the requirement of the ripple frequency F adjusting of pulsing, the concrete adjusting is: according to the ripple frequency of setting, the aperture of regulating with the basis is the initial phase aperture, by the difference between amplitude A adjusting air throttle (5) aperture and the initial phase aperture, after difference is reconciled, still in cathode pressure control claimed range, the span of amplitude A is 0.1～1 ° to the aperture of air throttle (5).
4. according to the control method of claim 3 a fuel battery cathode with proton exchange film pulsation system, the response frequency that it is characterized in that described ripple frequency F≤air throttle (5), the product of air throttle (5) response time and response frequency is 1s, and the unit of response time is s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101643668A CN103280590A (en) | 2013-05-07 | 2013-05-07 | A proton exchange membrane fuel cell cathode pulsation system and its adjustment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101643668A CN103280590A (en) | 2013-05-07 | 2013-05-07 | A proton exchange membrane fuel cell cathode pulsation system and its adjustment method |
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| CN103280590A true CN103280590A (en) | 2013-09-04 |
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| CN2013101643668A Pending CN103280590A (en) | 2013-05-07 | 2013-05-07 | A proton exchange membrane fuel cell cathode pulsation system and its adjustment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921064A (en) * | 2019-03-11 | 2019-06-21 | 长春理工大学 | Small Proton Exchange Membrane Fuel Cell Based on Ultrasonic Vibration Humidifier |
| CN110364752A (en) * | 2018-03-26 | 2019-10-22 | 郑州宇通客车股份有限公司 | A kind of fuel cell system and its control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1791995A (en) * | 2003-05-16 | 2006-06-21 | 丰田自动车株式会社 | Operation control of a fuel cell system |
| CN1847080A (en) * | 2005-04-04 | 2006-10-18 | 本田技研工业株式会社 | Motorcycle with fuel cell and fuel cell stack structure |
-
2013
- 2013-05-07 CN CN2013101643668A patent/CN103280590A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1791995A (en) * | 2003-05-16 | 2006-06-21 | 丰田自动车株式会社 | Operation control of a fuel cell system |
| CN1847080A (en) * | 2005-04-04 | 2006-10-18 | 本田技研工业株式会社 | Motorcycle with fuel cell and fuel cell stack structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364752A (en) * | 2018-03-26 | 2019-10-22 | 郑州宇通客车股份有限公司 | A kind of fuel cell system and its control method |
| CN109921064A (en) * | 2019-03-11 | 2019-06-21 | 长春理工大学 | Small Proton Exchange Membrane Fuel Cell Based on Ultrasonic Vibration Humidifier |
| CN109921064B (en) * | 2019-03-11 | 2024-01-30 | 长春理工大学 | Small proton exchange membrane fuel cell based on ultrasonic vibration humidifier |
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Application publication date: 20130904 |