CN1310363C - Air conveying device capable of raising fuel battery operation efficiency - Google Patents
Air conveying device capable of raising fuel battery operation efficiency Download PDFInfo
- Publication number
- CN1310363C CN1310363C CNB02136527XA CN02136527A CN1310363C CN 1310363 C CN1310363 C CN 1310363C CN B02136527X A CNB02136527X A CN B02136527XA CN 02136527 A CN02136527 A CN 02136527A CN 1310363 C CN1310363 C CN 1310363C
- Authority
- CN
- China
- Prior art keywords
- air
- fuel cell
- water
- outlet
- air compressor
- 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 - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 96
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 239000008367 deionised water Substances 0.000 claims abstract description 36
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 36
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 36
- 239000001257 hydrogen Substances 0.000 claims description 27
- 229910052739 hydrogen Inorganic materials 0.000 claims description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000012809 cooling fluid Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 241000886569 Cyprogenia stegaria Species 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 229920006351 engineering plastic Polymers 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000002161 passivation Methods 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 3
- 229910000619 316 stainless steel Inorganic materials 0.000 claims 2
- 238000005507 spraying Methods 0.000 abstract description 17
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000007423 decrease Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 36
- 239000007800 oxidant agent Substances 0.000 description 14
- 230000001590 oxidative effect Effects 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000003487 electrochemical reaction Methods 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000010248 power generation Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- -1 hydrogen cations Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Fuel Cell (AREA)
Abstract
The present invention relates to an air conveyer capable of raising the operation efficiency of a fuel cell. The present invention comprises a fuel cell pile, an air compressor or a high pressure blower, a moisture separator, a deionizer, a deionized water tank, a water spraying compression pump, a water spraying amount measuring regulating valve, a water spraying opening and an air filter, wherein the fuel cell pile is provided with an air inlet and an air and water generating outlet. The air compressor or the high pressure blower is provided with an air inlet and an air outlet. The air and water generating outlet of the fuel cell pile is connected with the moisture separator. The moisture separator is orderly connected with the deionizer, the deionized water tank, the water spraying compression pump, the water spraying amount measuring regulating valve and the water spraying opening. The moisture separator is arranged on a casing of the air compressor or the high pressure blower. An air outlet of the air compressor or the high pressure blower is connected with the air inlet of the fuel cell pile. Compared with the prior art, the present invention has the advantages of simple structure, energy consumption decrease, stable performance, etc.
Description
Technical Field
The present invention relates to fuel cells, and more particularly, to an air delivery device that can improve the operating efficiency of a fuel cell.
Background
An electrochemical fuel cell is a device that is capable of converting hydrogen fuel and an oxidant into electrical energy and reaction products. The inner core component of the device is a Membrane Electrode (MEA), which is composed of a proton exchange Membrane and two porous conductive materials sandwiched between two surfaces of the Membrane, such as carbon paper. The membrane contains a uniform and finely dispersed catalyst, such as a platinum metal catalyst, for initiating an electrochemical reaction at the interface between the membrane and the carbon paper. The electrons generated in the electrochemical reaction process can be led out by conductive objects at two sides of the membrane electrode through an external circuit to form a current loop.
At the anode end of the membrane electrode, fuel can permeate through a porous diffusion material (carbon paper) and undergo electrochemical reaction on the surface of a catalyst to lose electrons to form positive ions, and the positive ions can pass through a proton exchange membrane through migration to reach the cathode end at the other end of the membrane electrode. At the cathode end of the membrane electrode, a gas containing an oxidant (e.g., oxygen), such as air, forms negative ions by permeating through a porous diffusion material (carbon paper) and electrochemically reacting on the surface of the catalyst to give electrons. The anions formed at the cathode end react with the positive ions transferred from the anode end to form reaction products.
In a pem fuel cell using hydrogen as the fuel and oxygen-containing air as the oxidant (or pure oxygen as the oxidant), the catalytic electrochemical reaction of the fuel hydrogen in the anode region produces hydrogen cations (or protons). The proton exchange membrane assists the migration of positive hydrogen ions from the anode region to the cathode region. In addition, the proton exchange membrane separates the hydrogen-containing fuel gas stream from the oxygen-containing gas stream so that they do not mix with each other to cause explosive reactions.
In the cathode region, oxygen gains electrons on the catalyst surface, forming negative ions, which react with the hydrogen positive ions transported from the anode region to produce water as a reaction product. In a proton exchange membrane fuel cell using hydrogen, air (oxygen), the anode reaction and the cathode reaction can be expressed by the following equations:
and (3) anode reaction:
and (3) cathode reaction:
in a typical pem fuel cell, a Membrane Electrode (MEA) is generally placed between two conductive plates, and the surface of each guiding plate in contact with the MEA is die-cast, stamped, or mechanically milled to form at least one or more guiding grooves. The guide electrode plates can be plates made of metal materials or plates made of graphite materials. The diversion pore canals and the diversion grooves on the diversion electrode plates respectively guide the fuel andthe oxidant into the anode area and the cathode area on two sides of the membrane electrode. In the structure of a single proton exchange membrane fuel cell, only one membrane electrode is arranged, and a flow guide polar plate of anode fuel and a flow guide polar plate of cathode oxidant are respectively arranged on two sides of the membrane electrode. The flow guide polar plates are used as a current flow collection mother plate and mechanical supports at two sides of the membrane electrode, and flow guide grooves on the flow guide polar plates are also used as channels for fuel and oxidant to enter the surfaces of the anode and the cathode and as channels for taking away water generated in the operation process of the fuel cell.
In order to increase the total power of the whole proton exchange membrane fuel cell, two or more single cells can be connected in series to form a battery pack in a straight-stacked manner or connected in a flat-laid manner to form a battery pack. In the direct-stacking and serial-type battery pack, two surfaces of one polar plate can be provided with flow guide grooves, wherein one surface can be used as an anode flow guide surface of one membrane electrode, and the other surface can be used as a cathode flow guide surface of another adjacent membrane electrode, and the polar plate is called a bipolar plate. A series of cells are connected together in a manner to form a battery pack. The battery pack is generally fastened together into one body by a front end plate, a rear end plate and a tie rod.
A typical battery pack generally includes: (1) the fuel (such as hydrogen, methanol or hydrogen-rich gas obtained by reforming methanol, natural gas and gasoline) and the oxidant (mainly oxygen or air) are uniformly distributed in the diversion trenches of the anode surface and the cathode surface; (2) cooling fluid (such as water) is uniformly distributed into cooling channels in each battery pack through an inlet and an outlet of the cooling fluid and a flow guide channel, and heat generated by electrochemical exothermic reaction of hydrogen and oxygen in the fuel cell is absorbed and taken out of the battery pack for heat dissipation; (3) the outlets of the fuel gas and the oxidant gas and the corresponding flow guide channels can carry out liquid and vapor water generated in the fuel cell when the fuel gas and the oxidant gas are discharged. Typically, all fuel, oxidant, and cooling fluid inlets and outlets are provided in one or both end plates of the fuel cell stack.
The proton exchange membrane fuel cell can be used as a power system of all vehicles, ships and other vehicles, and can also be used as a portable, movable and fixed power generation device. Proton exchange membrane fuel cells typically use hydrogen or rich hydrogen or alcohols as the fuel. Air is typically used as the oxidant when used in vehicle, marine power systems or mobile, stationary power plants. When the proton exchange membrane fuel cell is used as a power system of a vehicle or a ship or a mobile or fixed power generation device, the proton exchange membrane fuel cell must comprise a cell stack, a fuel hydrogen supply part, an air supply part, a cooling heat dissipation part, an automatic control part and an electric energy output part. Wherein the air supply is essential.
Electrochemical reactions in pem fuel cells are accelerated as the concentration of fuel and oxidant in the electrodes increases. Therefore, when air is used as the oxidant, in order to increase the oxygen concentration on the cathode side of the electrode, two aspects must be made, namely, on one hand, the pressure of the air supplied to the fuel cell is increased to increase the oxygen partial pressure, and on the other hand, the water generated on the cathode side of the electrode is carried away by the excessive supplied air in time, so that the oxygen is favorably diffused to the electrodereaction area. So that the pressure of the air supply is generally increased and the supply is excessive, the output performance of the fuel cell is improved. It must be considered that the increased air pressure delivered to the fuel cell and the supply of excess air directly results in a significant increase in the power consumed by the devices delivering air to the fuel cell, such as the air compressor, air pump, blower. From the whole fuel cell power system or power generation system, a device for conveying air to the fuel cell in the system also consumes a large part of energy, which accounts for about 5-20% of the total output of the whole fuel cell system, and the reduction of the energy consumption of the air conveying device is of great importance in order to improve the whole energy efficiency of the whole fuel cell power generation system. On the other hand, the proton exchange membrane used in the electrode of the proton exchange membrane fuel cell at present needs water molecules to keep moisture during the operation process of the cell. Since only sufficiently hydrated protons can freely pass through the proton exchange membrane from the anode end of the electrode to the cathode end of the electrode to participate in the electrochemical reaction. Otherwise, when a large amount of excessive dry air is supplied to the fuel cell, water molecules in the proton exchange membrane are easy to be carried away, and the internal resistance of the electrode is increased rapidly and the performance of the electrode is reduced rapidly because the proton cannot pass through the proton exchange membrane freely due to insufficient hydration of the proton. Therefore, the air supplied to the fuel cell generally needs to be humidified to increase the relative humidity of the water contained in the air so as not to cause water loss from the proton exchange membrane.
The following two types of devices are mainly available for air delivery of a proton exchange membrane fuel cell power generation system:
(1) compressors that effect air compression by means of a change in volume, such as scroll air compressors, screw air compressors, and the like;
(2) air pumps or fans for compressing air by means of rapidly moving air, such as high-pressure, low-pressure blowers, vane pumps, etc.
These two types of air compression devices have the following common disadvantages when used as a means of delivering air to a fuel cell:
(1) when air is compressed, the air temperature rises sharply. From atmospheric air compression to 2 atmospheres absolute, the compressed air temperature can rise to over one hundred degrees celsius. As the compressed air temperature increases, the efficiency of any air compression device decreases, or the energy consumption increases.
(2) When the compressed air reaches a certain high temperature, for example above 80 ℃, it cannot directly enter the fuel cell operation, since the operating temperature of the fuel cell generally does not exceed 80 ℃. The high-heat air which exceeds the working temperature of the fuel cell enters the fuel cell and quickly brings water molecules on a proton exchange membrane in the fuel cell away, so that the performance of an electrode is sharply reduced.
The present method to solve the above problems is to pass the compressed and raised temperature air through an external humidification and heat exchange device, which can cool the compressed and raised temperature air to below the operating temperature of the fuel cell, and can also supplement water molecules to the compressed and raised temperature air to increase the relative water humidity to nearly 100%. Therefore, after entering the fuel cell to operate, water molecules on the proton exchange membrane in the fuel cell cannot be carried away. However, this current method has the following disadvantages:
1) the system is provided with an additional external humidification and heat exchange membrane device, so that the volume, the weight and the complexity of the whole fuel cell as a power or power generation system are increased.
2) When the compressed and temperature-raised air passes through the humidifying and heat exchanging device, the air pressure loss is caused due to the increase of the air flow resistance, so that the energy consumption of the whole system is increased, and the energy efficiency is reduced. In addition, the humidification and heat exchange device usually needs to consume extra energy of the system, so that the energy consumption of the whole system is increased, and the energy efficiency is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an air conveying device which has simple structure, low energy consumption and stable performance and can improve the operation efficiency of a fuel cell.
The purpose of the invention can be realized by the following technical scheme: an air conveying device capable of improving the operation efficiency of a fuel cell comprises a fuel cell stack, an air compressor or a high-pressure fan, and is characterized by further comprising a water-vapor separator, a deionizer, a deionized water tank, a water spray compression pump, a water spray amount metering regulating valve, a water spray nozzle and an air filter, wherein the fuel cell stack is provided with an air inlet and an air and generated water outlet, the air compressor or the high-pressure fan is provided with an air inlet and an air outlet, an inlet of the water-vapor separator is connected with the air and generated water outlet of the fuel cell stack, an inlet of the deionizer is connected with an outlet of the water-vapor separator, an inlet of the deionized water tank is connected with an outlet of the deionizer, an inlet of the water spray compression pump is connected with an outlet of the deionized water tank, and an inlet of the water spray amount metering regulating valve is connected with an outlet of the, the water spray opening is arranged on a shell of the air compressor or the high-pressure fan and is communicated with the inside of the shell to form an inward spray shape, the water spray opening is connected with an outlet of the water spray quantity metering regulating valve, the air filter is connected with an air inlet of the air compressor or the high-pressure fan, and an air outlet of the air compressor or the high-pressure fan is connected with an air inlet of the fuel cell stack; the fuel cell stack generates and discharges a large amount of water, the water is processed by the water-vapor separator and the deionizer to become deionized water, the deionized water enters the deionized water tank, and the deionized water is sprayed into the air compressor or the high-pressure fan for recycling through the water spray compression pump, the water spray amount metering adjusting valve and the water spray opening.
The air compressor is a scroll air compressor or a screw air compressor, and the deionized water sprayed out from the water spray opening is directly sprayed into a scroll of the scroll air compressor or a screw of the screw air compressor.
The high pressure fan is provided with a fast rotating impeller, and the deionized water sprayed from the water spray opening is directly sprayed on the impeller of the high pressure fan.
The shell, the scroll or the screw of the air compressor adopts 316 model stainless steel and titanium, or adopts corrosion-resistant alloy, or adopts aluminum which is subjected to anodic oxidation passivation treatment, and the surface of the shell, the scroll or the screw is plated with stainless steel or nickel, or adopts engineering plastics or ceramic materials.
The high-pressure fan shell and the impeller are made of 316 type stainless steel and titanium or corrosion-resistant alloy or aluminum subjected to anodic oxidation passivation treatment, and the surfaces of the high-pressure fan shell and the impeller are plated with stainless steel or nickel or made of engineering plastics or ceramic materials.
The fuel cell stack also comprises a hydrogen supply device, and the hydrogen supply device consists of a hydrogen storage bottle and a hydrogen flow regulating valve.
The fuel cell stack also comprises a cooling fluid circulating device which consists of a fluid radiator and a fluid circulating pump.
The invention adopts the technical proposal that a certain amount of deionized water is sprayed into an air compression device for conveying air to the fuel cell (the quantity of the sprayed deionized water should form a certain proportional relation with the quantity of the air conveyed to the fuel cell by the device, and the proportional relation mainly ensures that the air compression device compresses and conveys a certain amount of air to achieve the purposes of reducing the temperature to be lower than the working temperature of the fuel cell and completely humidifying to be in line with the relative humidity of the operation of the fuel cell), and the deionized water is obtained by deionizing the reaction generated water of the fuel cell stack, therefore, the invention omits an external humidifying and heat exchanging device in the prior art, ensures that the system structure is simpler, and the operation cost and the energy consumption of the fuel cell are further reduced because the reaction generated water is recycled, and simultaneously, an air compressor and a high-pressurefan adopt humidifying operation after water spraying, the performance of the battery is obviously improved, and the battery is very stable in high-power or low-power output.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in FIG. 1, an air delivery device capable of improving the operation efficiency of a fuel cell comprises a fuel cell stack 1, a high pressure fan 2, a water-vapor separator 8, a deionizer 14, a deionized water tank 7, a water-spraying compression pump 6, a water-spraying amount metering regulating valve 16, a water-spraying port 5 and an air filter 15, wherein the fuel cell stack is provided with an air inlet 9 and an air and generated water outlet 10, the high pressure fan is provided with an air inlet 3 and an air outlet 4, the inlet of the water-vapor separator 8 is connected with the air and generated water outlet 10 of the fuel cell stack, the inlet of the deionizer 14 is connected with the outlet of the water-vapor separator 8, the inlet of the deionized water tank 7 is connected with the outlet of the deionizer 14, the inlet of the water-spraying compression pump 6 is connected with the outlet of the deionized water tank 7, the inlet of the water-spraying amount metering regulating valve 16 is connected with the outlet of the water-spraying, the water spray opening 5 is arranged on the shell of the high-pressure fan 2 and is communicated with the inside of the shell to form an inward spray shape, the water spray opening 5 is connected with the outlet of a water spray quantity metering regulating valve 16, the air filter 15 is connected with the air inlet 3 of the high-pressure fan, and the air outlet 4 of the high-pressure fan is connected with the air inlet 9 of the fuel cell stack; the fuel cell stack 1 further includes a hydrogen supply device, which is composed of a hydrogen storage bottle 13 and a hydrogen flow rate regulating valve 17, and the fuel cell stack 1 further includes a cooling fluid circulation device, which is composed of a fluid radiator 12 and a fluid circulation pump 11. The fuel cell stack 1 generates and discharges a large amount of water through reaction, the water is processed by a water-vapor separator 8 and a deionizer 14 to become deionized water, the deionized water enters a deionized water tank 7, and the deionized water is sprayed into a high-pressure fan 2 through a water spray compression pump 6, a water spray amount metering adjusting valve 16 and a water spray opening 5 for recycling.
The high pressure fan 2 has the working performance of about 0.5Bar (relative pressure), the air flow is 1 cubic meter/minute, and the air temperature can be increased to more than 80 ℃ after the high pressure fan compresses air (the normal temperature air is 35 ℃) before water spraying is not adopted. A water spray opening 5 is arranged on a shell of the high-pressure fan 2, deionized water is stored in a water tank 7, and the deionized water is directly sprayed on an impeller of the high-pressure fan through the water spray opening 5 by a small-sized water pump 6 with low power consumption (50 w-100 w) through a metering adjusting valve 16. The fan impeller rotating at a high speed breaks up and gasifies the deionized water and mixes the deionized water with the air moving at a high speed and compressed to generate air with a certain relative humidity, the water spraying amount is about 100 g-1 g/min, and the corresponding air flow is 0.1-2 cubic meters/min. Because the evaporation of the deionized water needs a large amount of evaporation heat, the temperature of the fan 2 and the compressed air is reduced to 40-60 ℃, and the temperature of the fan and the compressed air is uniformly mixed with the compressed air to form compressed air with certain relative humidity, and the compressed air is output from the air outlet 4 of the fan. The fan shell, the bearing and the impeller are made of aluminum materials, are anodized and are plated with stainless steel. When the fan 2 works, sucked air is filtered by the filter 3 to remove any dust with particles larger than 0.3-0.1 Micron, then compressed air with certain relative humidity is output and does not contain any ions, the compressed air can directly enter from an air inlet 9 of the fuel cell stack, the compressed air is discharged into the water-steam separator 8 from an air outlet 10 of the fuel cell stack after electrochemical reaction, part of the water is separated from the air in the water-steam separator 8 and is reserved, and the air is discharged from the water-steam separator 8. The remained water is purified by the centrifuge 14 and then returns to the deionized water tank 7 again, and is circularly sprayed into the water spray opening 5 to enter the fan through the small water pump 6 and the metering valve 16.
Through the above-mentioned water-spraying circulation process, after the air is compressed in the long-time working process of the fan 2, the temperature of the air-out machine is reduced to 50 ℃ (the normal temperature air is 35 ℃), the power consumption of the fan 2 is obviously reduced under the same working pressure and flow (0.5Bar, 1 cubic meter/min) compared with the original water-spraying-free time, and the fuel cell adopts the humidified compressed air after water spraying to operate under the support of the original same hydrogen supply system (including a hydrogen source and the like) and a cooling fluid circulation heat dissipation system (including a cooling fluidpump 11, a radiator 12 and the like), the performance of the cell is obviously improved, the working temperature can be improved, and the cell is very stable in high-power or low-power output.
Example 2
The operation performance of the vortex type air compressor was about 0.8Bar (relative pressure), the air flow rate was 1 cubic meter/min, and the implementation method and results were the same as those of example 1.
Claims (7)
1. An air conveying device capable of improving the operation efficiency of a fuel cell comprises a fuel cell stack, an air compressor or a high-pressure fan, and is characterized by further comprising a water-vapor separator, a deionizer, a deionized water tank, a water spray compression pump, a water spray amount metering regulating valve, a water spray nozzle and an air filter, wherein the fuel cell stack is provided with an air inlet and an air and generated water outlet, the air compressor or the high-pressure fan is provided with an air inlet and an air outlet, an inlet of the water-vapor separator is connected with the air and generated water outlet of the fuel cell stack, an inlet of the deionizer is connected with an outlet of the water-vapor separator, an inlet of the deionized water tank is connected with an outlet of the deionizer, an inlet of the water spray compression pump is connected with an outlet of the deionized water tank, and an inlet of the water spray amount metering regulating valve is connected with an outlet of the, the water spray opening is arranged on a shell of the air compressor or the high-pressure fan and is communicated with the inside of the shell to form an inward spray shape, the water spray opening is connected with an outlet of the water spray quantity metering regulating valve, the air filter is connected with an air inlet of the air compressor or the high-pressure fan, and an air outlet of the air compressor or the high-pressure fan is connected with an air inlet of the fuel cell stack; the fuel cell stack generates and discharges a large amount of water, the water is processed by the water-vapor separator and the deionizer to become deionized water, the deionized water enters the deionized water tank, and the deionized water is sprayed into the air compressor or the high-pressure fan for recycling through the water spray compression pump, the water spray amount metering adjusting valve and the water spray opening.
2. The air delivery device of claim 1, wherein the air compressor is a scroll air compressor or a screw air compressor, and the deionized water from the water jet is directly sprayed into a scroll of the scroll air compressor or a screw of the screw air compressor.
3. The air delivery device according to claim 1, wherein the high pressure blower is provided with a fast-rotating impeller, and the deionized water from the water jet is directly sprayed on the impeller of the high pressure blower.
4. The air delivery device for improving the operation efficiency of the fuel cell as claimed in claim 1 or 2, wherein the casing, scroll or screw of the air compressor is made of type 316 stainless steel, titanium, or corrosion-resistant alloy, or aluminum which is subjected to anodic oxidation passivation treatment, and the surface of the casing, scroll or screw is plated with stainless steel or nickel, or engineering plastics or ceramic materials.
5. The air delivery device for improving the operation efficiency of the fuel cell according to claim 1 or 3, wherein the high-pressure fan shell and the impeller are made of type 316 stainless steel, titanium, or corrosion-resistant alloy, or aluminum subjected to anodic oxidation passivation treatment, and the surface of the high-pressure fan shell and the surface of the impeller are plated with stainless steel or nickel, or are made of engineering plastics or ceramic materials.
6. The air delivery device for improving the operating efficiency of the fuel cell according to claim 1, wherein the fuel cell stack further comprises a hydrogen supply device, and the hydrogen supply device comprises a hydrogen storage bottle and a hydrogen flow regulating valve.
7. The air delivery device for improving the operating efficiency of the fuel cell according to claim 1, wherein the fuel cell stack further comprises a cooling fluid circulation device, and the cooling fluid circulation device comprises a fluid radiator and a fluid circulation pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02136527XA CN1310363C (en) | 2002-08-16 | 2002-08-16 | Air conveying device capable of raising fuel battery operation efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02136527XA CN1310363C (en) | 2002-08-16 | 2002-08-16 | Air conveying device capable of raising fuel battery operation efficiency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1476120A CN1476120A (en) | 2004-02-18 |
| CN1310363C true CN1310363C (en) | 2007-04-11 |
Family
ID=34146520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02136527XA Expired - Lifetime CN1310363C (en) | 2002-08-16 | 2002-08-16 | Air conveying device capable of raising fuel battery operation efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1310363C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10069154B2 (en) * | 2011-08-24 | 2018-09-04 | Borgwarner Inc. | Air feed device for a fuel cell |
| CN102522585B (en) * | 2012-01-05 | 2014-11-26 | 中国科学院长春应用化学研究所 | Direct alcohol fuel cell power generation system |
| CN107448384A (en) * | 2016-05-31 | 2017-12-08 | 苏州艾柏特精密机械有限公司 | Double-screw compressor rotor preparation method |
| CN106887614B (en) * | 2017-01-23 | 2019-12-20 | 杰锋汽车动力系统股份有限公司 | Air supply device for fuel cell |
| CN108448134B (en) * | 2018-02-01 | 2020-07-28 | 广东国鸿氢能科技有限公司 | Air transportation device, fuel cell system and vehicle |
| US11158871B2 (en) * | 2018-07-18 | 2021-10-26 | GM Global Technology Operations LLC | Fuel cell assembly and a vehicle that utilizes the fuel cell assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000012048A (en) * | 1998-06-18 | 2000-01-14 | Toyota Motor Corp | Gas separator for fuel cell, fuel cell using the gas separator for the fuel cell, and manufacture of the gas separator for the fuel cell |
| US6015634A (en) * | 1998-05-19 | 2000-01-18 | International Fuel Cells | System and method of water management in the operation of a fuel cell |
| CN1339181A (en) * | 1998-11-02 | 2002-03-06 | 兹特克公司 | Fuel cell stacks for ultra-high efficiency power systems |
| CN2558093Y (en) * | 2002-08-16 | 2003-06-25 | 上海神力科技有限公司 | Air conveyer capable of raising fuel cell running efficiency |
-
2002
- 2002-08-16 CN CNB02136527XA patent/CN1310363C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6015634A (en) * | 1998-05-19 | 2000-01-18 | International Fuel Cells | System and method of water management in the operation of a fuel cell |
| CN1301406A (en) * | 1998-05-19 | 2001-06-27 | 国际燃料电池有限责任公司 | System and method for water management in the operation of a fuel cell |
| JP2000012048A (en) * | 1998-06-18 | 2000-01-14 | Toyota Motor Corp | Gas separator for fuel cell, fuel cell using the gas separator for the fuel cell, and manufacture of the gas separator for the fuel cell |
| CN1339181A (en) * | 1998-11-02 | 2002-03-06 | 兹特克公司 | Fuel cell stacks for ultra-high efficiency power systems |
| CN2558093Y (en) * | 2002-08-16 | 2003-06-25 | 上海神力科技有限公司 | Air conveyer capable of raising fuel cell running efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1476120A (en) | 2004-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5441821A (en) | Electrochemical fuel cell system with a regulated vacuum ejector for recirculation of the fluid fuel stream | |
| CN101887981A (en) | Hydrogen closed circulation system used for fuel cell | |
| CN1661839A (en) | Fuel cell with dynamic control device | |
| JP4806139B2 (en) | Fuel cell humidification system | |
| CN1310363C (en) | Air conveying device capable of raising fuel battery operation efficiency | |
| CN2558093Y (en) | Air conveyer capable of raising fuel cell running efficiency | |
| CN1753223A (en) | High efficiency fuel battery humidification device | |
| CN1567635A (en) | A fuel battery hydrogen gas cyclic utilization device adapting for low-pressure operation | |
| CN102142574A (en) | Practical proton exchange membrane fuel cell generator | |
| CN1320678C (en) | High effect humidifying device used for fuel battery | |
| CN2733612Y (en) | A fuel cell with dynamic control device | |
| CN101483248B (en) | Anode recirculation pump control strategy | |
| CN2768218Y (en) | Fuel cell with compact structure | |
| JP4970672B2 (en) | Fuel cell power generation equipment | |
| CN2879436Y (en) | Device capable of making full use of hydrogen and oxygen of fuel cell | |
| CN2543217Y (en) | Enetgy-saving efficient fan capable of transfering air to fuel cell | |
| CN2624416Y (en) | An air-humidification system arrangement of highly effective fuel battery | |
| CN1764002A (en) | Fuel cell capable of rapid response under output power abrupt intensification state | |
| CN207587855U (en) | A kind of hydrogen fuel portable power power supply | |
| CN100392252C (en) | Efficient energy-saving fan capable of feeding air for fuel cell | |
| CN2751449Y (en) | A highly efficient fuel cell humidifying device | |
| CN202076373U (en) | Novel fuel battery electric generator | |
| CN2718794Y (en) | Fuel cell capable of raising utilization ratio of hydrogen | |
| CN1684294A (en) | Self heat radiation and self wetting fuel cell stack with high power density | |
| CN2667677Y (en) | Fuel cell hydrogen circulation utilizing device adapted to low-voltage operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY Free format text: FORMER OWNER: SHANGHAI SHEN-LI HIGH TECH. CO., LTD. Effective date: 20121214 Owner name: SHANGHAI SHEN-LI HIGH TECH. CO., LTD. STATE GRID C Effective date: 20121214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201400 FENGXIAN, SHANGHAI TO: 200122 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121214 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Patentee after: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: Shanghai Shenli Technology Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 201400, Shanghai, Fengxian District, Pu Pu Avenue, No. 10, building 111 Patentee before: Shanghai Shenli Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070411 |
|
| CX01 | Expiry of patent term |