CN203277562U - Fuel cell cathode system - Google Patents
Fuel cell cathode system Download PDFInfo
- Publication number
- CN203277562U CN203277562U CN2012205415638U CN201220541563U CN203277562U CN 203277562 U CN203277562 U CN 203277562U CN 2012205415638 U CN2012205415638 U CN 2012205415638U CN 201220541563 U CN201220541563 U CN 201220541563U CN 203277562 U CN203277562 U CN 203277562U
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- China
- Prior art keywords
- air
- fuel cell
- humidifier
- air compressor
- pipeline
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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 utility model discloses a fuel cell cathode system, which comprises an air filter, an air flow meter, an air compressor, a humidifier, a fuel cell stack, a water segregator and a throttle valve, wherein the air filter is sequentially connected with the air flow meter, the air compressor and the humidifier through pipelines, the humidifier is connected with the fuel cell stack through a bidirectional pipeline, and is further respectively connected with the throttle valve and the water segregator through pipelines, and an outlet end of the water segregator is connected with the air compressor through a pipeline. According to the utility model, the cathode side tail gas refluxes to the inlet of the air compressor so as to effectively improve humidification, easily achieve uniform gas humidification after the reaction, improve gas distribution in various single cells of the battery pack, and reduce fresh air required by the reaction under the idle speed and low load conditions, such that an oxygen utilization rate can be increased, the problem of high voltage of the single cell under the idle speed and low load conditions can be solved, the process is simple, and the purpose is easy to achieve.
Description
Technical field
The utility model relates to fuel cell field, relates in particular to a kind of fuel battery cathode with proton exchange film system.
Background technology
Be protection of the environment, reduce the air pollution in the city, take the PEMFC(Proton Exchange Membrane Fuel Cells) for the device of power receives increasing concern, as PEMFC during take pure hydrogen as fuel, it can reach real " zero " and discharge.PEMFC all has certain application in fields such as traffic, communications at present.In the operation of fuel cells process, idling and low carrying are almost occupied the regular hour ratio in each operating mode, and idling and the low state that carries had a great impact life-span of fuel cell itself, optimized therefore that under idling and low carrying, a fuel cell operation status just seems particularly important.Under the low carrier strip spare of idling, there are again three large problems to need to solve: 1, humidification problem; 2, gas assignment problem; 3, idling and the low high problem of single-unit voltage of carrying.Prior art is not enough in order to make up the idling humidification aspect humidification, has introduced the hydrogen reflux in hydrogen gas side; Gas distribution aspect under the low carrier strip spare of idling, improves the air inlet stoichiometric proportion, increases the flow that participates in reacting gas; And under idling and low carrier strip spare, the problem that single-unit voltage is high, employing add ons increase the power consumption under idling and low carrying, and with lifting operation of fuel cells electric current, thereby reduce fuel cell single-unit operating voltage.
Prior art is not taken into account idling and low year three solution of problems, and anode-side is introduced the hydrogen reflux, has effectively solved the humidification problem, does not improve the gas assignment problem of cathode side; For solving the gas assignment problem, under the low carrier strip spare of idling, increased the flow that participates in reacting gas when improving the air inlet stoichiometric proportion, promoted the difficulty that the humidification problem solves; And when solution single-unit voltage is high, promoted the auxiliary power consumption of fuel cell system, and increased the consumption of fuel, reduced the economy of fuel.
Summary of the invention
Be to solve the problems referred to above that prior art exists, the utility model will design and a kind ofly can solve the humidification problem, can take into account again gas assignment problem and idling and the low fuel battery negative pole system of carrying the high problem of single-unit voltage of solving.
To achieve these goals, the technical solution of the utility model is as follows: a kind of fuel battery negative pole system, comprise air filter, mass air flow sensor, air compressor, humidifier, fuel cell pile, water knockout drum and air throttle, described air filter is connected with mass air flow sensor, air compressor and humidifier successively by pipeline, described humidifier is connected with fuel cell pile by two-way pipeline, described humidifier also is connected with water knockout drum with air throttle respectively by pipeline, and the port of export of described water knockout drum is connected with air compressor by pipeline.
Air throttle described in the utility model adopts and screws valve or position aperture adjustable valve.
Operation principle of the present utility model is as follows: outside air enters air compressor through air filter, mass air flow sensor, enter humidifier after the air compressor pressurization, air enters fuel cell pile after the humidifier humidification, air after humidification is after the fuel cell pile reaction, again enter humidifier, air wets, the enthalpy conversion with reacting afterwards in humidifier, the reaction after air from humidifier out after, be divided into two branch roads, wherein a branch road enters in environment by air throttle, and another branch road is through being back to the air compressor inlet place after water knockout drum.During work, the related mass air flow sensor of air throttle is regulated, until FAI Fresh Air Intake amount (mass air flow sensor represents number) satisfies certain stoichiometric proportion.
Compared with prior art, the utlity model has following beneficial effect:
1, because the utility model is back to the air compressor inlet place with cathode side tail gas, because cathode side tail gas carries a large amount of water generation reactions, so be back to the air compressor inlet place, can effectively improve humidification, help to react rear gas uniform humidification;
2, because the utility model is back to the air compressor inlet place with cathode side tail gas, except the required fresh air of reaction, advance the heap reaction after gas also increased backflow portion gas amount, improved therefore that between each single battery of battery pack, gas distributes;
3, because the utility model is back to the air compressor inlet place with cathode side tail gas, except the required fresh air of reaction, advance to pile reacting gas and also increased backflow portion gas amount, therefore under idling and low carrier strip spare, can reduce to react required amount of fresh air, improve like this utilance of oxygen and solved the economize on electricity that places an order of the low carrier strip spare of idling and press high problem;
4, because the utility model is back to the air compressor inlet place with cathode side tail gas, flow process is simple, is easy to realize.
Description of drawings
7, the total accompanying drawing of the utility model, wherein:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that prior art enters to pile air humidity temporal evolution curve.
Fig. 3 is prior art fuel cell pile single-unit voltage temporal evolution curve.
Fig. 4 is that the prior art fuel cell pile is patrolled and examined voltage schematic diagram (two joint one inspections).
Fig. 5 is that the utility model enters to pile air humidity temporal evolution curve.
Fig. 6 is the utility model fuel cell pile single-unit voltage temporal evolution curve.
Fig. 7 is that the utility model fuel cell pile is patrolled and examined voltage schematic diagram (two joint one inspections).
In figure: 1, air filter; 2, flowmeter; 3, air compressor; 4, humidifier; 5, fuel cell pile; 6, water knockout drum; 7, air throttle.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.As shown in Figure 1, a kind of fuel battery negative pole system, comprise air filter 1, mass air flow sensor 2, air compressor 3, humidifier 4, fuel cell pile 5, water knockout drum 6 and air throttle 7, described air filter 1 is connected with humidifier with mass air flow sensor 2, air compressor 3 successively by pipeline and is connected, described humidifier 4 is connected with fuel cell pile 5 by two-way pipeline, described humidifier 4 also is connected with water knockout drum with air throttle 7 respectively by pipeline and is connected, and the port of export of described water knockout drum 6 is connected with air compressor 3 by pipeline.
Air throttle 7 described in the utility model adopts and screws valve or position aperture adjustable valve.
Comparative Examples below by embodiment of the present utility model and prior art describes the beneficial effects of the utility model.
The Comparative Examples of prior art: the cathode side flow process as shown in Figure 1, fuel cell pile 5 be 110 the joint fuel cell packs.Open air throttle 7, block water knockout drum 6 place branch roads, fuel cell operation electric current 6A, air inlet stoichiometric proportion 7, oxygen concentration 21%.Keep stable operation 30min, record air humidity as shown in the curve of Fig. 2, the average single-unit voltage of fuel cell pile 5 as shown in Figure 3, each joint of fuel cell pile 5 is patrolled and examined voltage as shown in Figure 4.
Embodiment of the present utility model: as shown in Figure 1, open water knockout drum 6 place branch roads, close the throttle 7 gradually, until FAI Fresh Air Intake amount (flowmeter 2 registrations) satisfies 1.2 stoichiometric proportion.Record fuel cell operation electric current 6A, keep stable operation 30min, record air humidity as shown in the curve of Fig. 5, the average single-unit voltage of fuel cell pile 5 as shown in Figure 6, each joint of fuel cell pile 5 is patrolled and examined voltage as shown in Figure 7.
Can find out from the Comparative Examples of embodiment of the present utility model and prior art, the utility model adopts the fuel battery negative pole system, can take into account simultaneously the low large problem of idling three of carrying, effectively improve the cathode side humidification, reduced single-unit voltage, though minute mixing not as good as former flow process, but still can satisfy instructions for use.
Claims (2)
1. fuel battery negative pole system, it is characterized in that: comprise air filter (1), mass air flow sensor (2), air compressor (3), humidifier (4), fuel cell pile (5), water knockout drum (6) and air throttle (7), described air filter (1) by pipeline successively with mass air flow sensor (2), air compressor (3) is connected 4 with humidifier) connect, described humidifier (4) is connected with fuel cell pile (5) by two-way pipeline, described humidifier (4) also is connected 6 with air throttle (7) with water knockout drum respectively by pipeline) be connected, the port of export of described water knockout drum (6) is connected with air compressor (3) by pipeline.
2. a kind of fuel battery negative pole according to claim 1 system, it is characterized in that: described air throttle (7) adopts and screws valve or position aperture adjustable valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205415638U CN203277562U (en) | 2012-10-19 | 2012-10-19 | Fuel cell cathode system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205415638U CN203277562U (en) | 2012-10-19 | 2012-10-19 | Fuel cell cathode system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203277562U true CN203277562U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205415638U Expired - Lifetime CN203277562U (en) | 2012-10-19 | 2012-10-19 | Fuel cell cathode system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203277562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956906A (en) * | 2012-10-19 | 2013-03-06 | 新源动力股份有限公司 | Fuel battery cathode system |
-
2012
- 2012-10-19 CN CN2012205415638U patent/CN203277562U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956906A (en) * | 2012-10-19 | 2013-03-06 | 新源动力股份有限公司 | Fuel battery cathode system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |