CN106129437B - A kind of circle smart fuel cell humidifier and its air-humidification method - Google Patents
A kind of circle smart fuel cell humidifier and its air-humidification method Download PDFInfo
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- CN106129437B CN106129437B CN201610459241.1A CN201610459241A CN106129437B CN 106129437 B CN106129437 B CN 106129437B CN 201610459241 A CN201610459241 A CN 201610459241A CN 106129437 B CN106129437 B CN 106129437B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04828—Humidity; Water content
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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
Abstract
The present invention discloses a kind of round smart fuel cell humidifier, including cylindrical humidifier body, axle center circumference is provided at least four humidification regions in the humidifier body, region is humidified including a fuel gas, one oxidant gas humidifies region, with at least two public humidification regions, multiple humidifying units are distributed in each humidification region；The humidifying unit includes the gas stream field plate of cylinder, permeable moistened membrane, and it is set in the humidification medium flow field field plate on the outside of the permeable moistened membrane, it is provided with several gas flows on the side wall of the gas stream field plate, the gas flow is closed by the permeable moistened membrane, and the cavity between the humidification medium flow field field plate and the permeable moistened membrane is medium runner.The present invention controls and humidifies zoning design by system and more effectively controls the humidity of gas humidification and more intelligent raising humidifier utilization rate, is conducive to stabilization and the raising of Performance data, improves fuel battery performance and service life.
Description
Technical field
The invention belongs to fuel cell fields, and in particular to a kind of humidification system of fuel cell.
Background technology
Fuel cell is the device for converting the chemical energy of fuel gas to electric energy, its advantage is that product is water, zero-emission
It is pollution-free, low noise, transformation efficiency height.Operating temperature can be run at low ambient temperatures, be mobile power and base station power and solid
Determine the first choice of power supply.Fuel cell is made of membrane electrode, bipolar plates, collector plate, end plate and fastener.Since polymer film fires
Expect that cell monolithic voltage is low, be to be superimposed to be together in series by multiple battery units in practical applications, forms electricity
Heap.The core component of fuel cell is membrane electrode, and the heart of membrane electrode is proton exchange membrane, mainly plays isolation gas and offer
The effect of proton flow channel.
Proton exchange membrane must can be only achieved good working performance in the state of moistening.In order to make fuel cell reach
Optimum performance extends the pile service life, and fuel cell humidifying device is added in fuel cell system, makes the gas into fuel cell pile
Body humidifies.It is however noted that proton membrane is dry or overly moist can all reduce the ability that proton exchange membrane transmits proton, in turn
Influence the performance of membrane electrode.Proton membrane drying can not only cause proton transport ability to decline, and can reduce the service life of proton membrane.
In order to solve this problem, many solutions, such as 103069222 A of Publication No. CN are proposed both at home and abroad at present
A kind of disclosed fuel cell humidifier, including：Film shell with first end and second end；It is arranged in the film shell
Inner space in a branch of hollow-fibre membrane, wherein two ends of the hollow-fibre membrane are loaded into the film shell respectively
The first end and second end in；Humidity-keeping device in the inner space of the film shell is set；Placement
The first covering in the first end of the film shell, first covering include being arranged for introducing from exhaust pipe
The entrance of the nonreactive gas for the high humility put；And it is placed in the second covering in the second end of the film shell
Object, second covering include the outlet for discharging the nonreactive gas for being used for humidifying.In the documents,
In order to increase the humidity of gas, humidity-keeping device is additionally arranged in film shell, but since humidity is unadjustable, in fuel gas
Humidity is excessive, can cause cathode water logging, equally have a great impact to the performance of battery stack.Currently, the manufacture of fuel cell
Manufacturer is it is well recognized that proton membrane dries the influence to pile, but the influence to proton membrane overly moist is ignored, and one
The humidity of the promotion reaction gas of taste, cannot accurate real-time control gas humidification humidity, seriously affect the performance of pile.
In addition, traditional humidifier is fuel gas and oxidizer gas humidifier difference one humidifier of each use,
Two humidifiers are added in one fuel cell system, keeps whole system too fat to move complicated not compact, is also unfavorable for fuel cell system
The development of system densification and easy.
A kind of fuel cell humidifier as disclosed in 103915638 A of Publication No. CN, the humidifier is by several humidifications
Unit and humidifying membrane module are formed by stacking, wherein the humidifying unit is by dried noodle plate, humidifying membrane module, wet panel superposition group according to this
At one humidifying membrane module of sandwiched between two humidifying units, the humidifying membrane module and dried noodle plate, wet panel are equipped with three
Into three outlets：Fuel inlet, oxidant inlet, coolant inlet, fuel outlet, oxidant outlet, coolant outlet, wherein dry
Air inlet branch mouth and outlet branch mouth are additionally provided on panel and wet panel.In the documents, when humidifier is one, humidifier
It is only capable of humidifying the gas of a gas feed, if to humidify fuel gas and oxidant gas simultaneously, it is necessary to
A humidifier is respectively set in the both sides of pile.
A kind of fuel cell humidifier component disclosed in 104103844 A of Publication No. CN for another example, including：Shell, institute
It includes the first gas flow region that the first import, first outlet and permission first gas flow through the humidifier to state shell, described
Shell further includes the second gas flow region that the second import, second outlet and permission second gas flow through the humidifier, described
First gas has the relative humidity higher than the second gas；And pleated spacer, the pleated spacer is by described
One flow region is separated with second flowing and is left so that water flow to the second gas from the first gas, thus increases
Add the relative humidity of the second gas.In the documents to for humidifying fuel cell material and method changed
Into, but from the structure of the documents, it is apparent that the documents are made using the relative humidity difference of two kinds of gas
Water is flow to by first gas in the second gas, therefore the humidification device assembly cannot equally accomplish the fuel to fuel cell
Gas and oxidant gas humidify simultaneously, cause system too fat to move and cost increase.
Other than problem above, existing fuel cell humidifier adds humidity regulation not smart enoughization, cannot be according to fuel
The size of battery operation operating mode and pile output current voluntarily adjusts the humidity of fuel gas.Such as Publication No.
A kind of humidification regulating device of fuel cell disclosed in CN1612396 A, the device include humidity detecting element, humidity regulation portion
With humidification amount control unit, which and compared with setting value, then is passed through by detecting the humidity value of fuel cell oxidant gas
Humidity is adjusted in humidity regulation portion, and gas humidity needs external adjusting, similar this humidification system control to be all based on two
A humidifier is controlled according to pile operation demand, and due to the powerful output of pile, the moisture that cathode generates is more, matter
Moisture in sub- film is also more and more, so that the moisture into pile is tailed off, especially the humidification humidity of cathode gas requires more next
It is lower, it is based on this operating status, the humidification system for fuel cell of traditional two humidifiers of use causes waste humidification capability
Waste, cause the increase of entire fuel cell system cost.
Since the presence of the above problem limits the promotion of fuel battery performance, the yoke further hair of fuel cell
Exhibition, solves the above problems, has important role to fuel cell promotion and application.
Invention content
Goal of the invention：Present invention aims at a kind of intelligent humidifier in view of the deficiencies of the prior art, is provided, according to combustion
Expect the size of battery operation operating mode and pile output current, the humidity of fuel gas and oxidant gas to fuel cell into
Row is intelligent to be adjusted, and fuel cell humidifier humidification efficiency is improved；
Another object of the present invention is to provide a kind of air-humidification methods of above-mentioned humidifier.
Technical solution：Circle smart fuel cell humidifier of the present invention, including cylindrical humidifier body, it is described
Axle center circumference is provided at least four humidification regions in humidifier body, region is humidified including a fuel gas, one
A oxidant gas humidifies region and at least two public humidification regions, and it is single that multiple humidifications are distributed in each humidification region
Member；
The humidifying unit includes the gas stream field plate of cylinder, the permeable humidification being wrapped on the outside of the gas stream field plate
Film, and it is set in the humidification medium flow field field plate on the outside of the permeable moistened membrane, it is provided on the side wall of the gas stream field plate
Several gas flows are used for communicating fuel gas or oxidant gas, and the gas flow is closed by the permeable moistened membrane,
Cavity between the humidification medium flow field field plate and the permeable moistened membrane is medium runner, for humidification water or the humidification of circulating
Gas；
The both ends sealing in each humidification region, and both ends are respectively arranged with the gas stream with humidifying unit in each humidification region
The dry gas import and humid gas outlet of road connection, and the humidification medium entrance that be connected to the medium runner of humidifying unit and plus
Humid medium exports.
Further preferably technical solution is the present invention, and each both ends for humidifying region are close by the end plate with buffer unit
It seals, the dry gas import and humid gas consistent with the humidification region quantity is respectively arranged in two end plates and is exported, each dry gas
Import is exported with humid gas and is connected to respectively by the gas flow of humidifying unit in corresponding humidification region；It is also set in two end plates
Be equipped with to it is each humidification region conveying humidification medium humidification medium entrance and humidification media outlet, the humidification medium entrance and add
Humid medium exports the shaft core position for being separately positioned on two end plates, and each humidification medium runner humidified in region shares the humidification and is situated between
Matter import and humidification media outlet are interconnected.
Preferably, the humidification region is 4, and it is that fuel gas humidifies region that wherein A, which humidifies region, and B, C humidify region
Humidification region is shared for fuel gas oxidation agent gas, it is that oxidant gas humidifies region that D, which humidifies region,；
The import in A humidifications region is connected to dry fuel gas inlets, and outlet is connected to the anode of fuel cell pile,
The import in D humidifications region is connected to dry oxidation agent gas feed, and outlet is connected to the cathode of the fuel cell pile, B,
The import that C two humidifies region is connected to by solenoid directional control valve with dry fuel gas inlets, dry oxidation agent gas feed respectively, is exported
It is connected to the anode of the fuel cell pile, cathode by solenoid directional control valve.
Preferably, the permeable moistened membrane is hollow-fibre membrane, fluorine resin film, PBI films, zwitterion film wherein one
Kind.
Preferably, the gas-liquid water conservancy diversion dispersion plate and gas partitions dispersion plate, are made of metal or nonmetallic materials.
The humidification method of circle smart fuel cell humidifier of the present invention, includes the following steps：
（1）At fuel cell start-up initial stage, dry fuel gas enters fuel gas humidification region, and adds in fuel gas
Distribution in the gas flow of humidifying unit in wet zone；Dry oxidant gas enters oxidant gas humidification region and at least
In one public humidification region in oxidant gas pipeline, and it is distributed in the gas flow in several humidification regions；Humidification
Medium is entered by the negative direction of gas inflow direction in the medium runner in each humidification region, and the moisture humidified in medium passes through expansion
The effect of dissipating enters in gas flow, is humidified to dry fuel gas and oxidant gas；
（2）Fuel cell operation for a period of time after, when the output current of pile is more than the parameter of setting, at least one institute
It states public humidification region and is converted to fuel gas pipeline successively, dry fuel gas enters transformed public humidification region
In, with incrementally increasing for electric current, conversion to the public humidification region of fuel gas pipeline is stepped up；
（3）Fuel cell pile output current from large to small when, output current less than setting parameter, it is at least one
The public humidification region is converted to oxidant gas pipeline successively again, dry oxidant gas enter it is transformed public plus
In wet zone, with gradually reducing for electric current, conversion to the public humidification region of oxidant gas pipeline is stepped up.
Further to limit, the humidification region is 4, and it is that fuel gas humidifies region that wherein A, which humidifies region, and B, C add
Wet zone be share humidification region, D humidify region be oxidant gas humidify region, fuel cell pile output current by
It is small to it is big when, the humidification steps in 4 of humidifier humidification regions are：
A, as 0≤I of pile output current≤nA, drying fuel gas enters humidifier A by shut-off valve and humidifies region,
It is humidified in the humidification channel that A humidifies region, the fuel gas after humidification is directly entered the anode of fuel cell pile；Oxidant
Gas enters the tri- humidification regions humidifier B, C, D by shut-off valve and is humidified, and the oxidant gas after humidification passes through electromagnetism
Reversal valve enters the cathode of fuel cell pile；
B, as pile output current nA ＜ I≤mA, drying fuel gas enters humidifier A, B two by shut-off valve and humidifies
Region, A humidify region and are humidified directly to fuel gas, and B humidifications region is switched to fuel gas pipeline by solenoid directional control valve, gives
Fuel gas humidifies, and the fuel gas of moistening enters back into the anode of fuel cell pile；Oxidant gas is direct by shut-off valve
It is opened into the humidification regions humidifier C, D and oxidant gas bypass, bypass ratio valve, C, D two humidifies region oxygen supply agent
Gas humidification, the oxidant gas after humidification summarize with bypass oxidant gas into fuel cell pile after solenoid directional control valve
Cathode；
C, as pile output current mA ＜ I≤kA, drying fuel gas enters humidifier A, B, C tri- by shut-off valve and adds
Wet zone, A, B humidify region and are humidified directly to fuel gas, and C humidifications region is switched to fuel gas pipe by solenoid directional control valve
Road, humidifies to fuel gas, and the fuel gas of moistening enters back into the anode of fuel cell pile；Oxidant gas passes through shut-off valve
It is directly entered the humidification regions humidifier D and oxidant gas bypass, oxidant gas bypass ratio valve is opened, D humidifies region
Oxygen supply agent gas humidification, oxidant gas and bypass oxidant gas after humidification summarize the moon into fuel cell pile
Pole；
When the pile output current of fuel cell is descending, the humidification step in 4 humidification regions of humidifier is：
D, as pile output current nA ＜ I≤mA, drying fuel gas enters humidifier A, B by shut-off valve and humidifies area
Domain is humidified to fuel gas, and the fuel gas of moistening enters the anode of fuel cell pile；Oxidant gas is straight by shut-off valve
It taps into the humidification regions humidifier D and oxidant gas bypass, bypass oxidant gas proportioning valve is opened, and it is logical that C humidifies region
It crosses solenoid directional control valve and is switched to oxidant gas pipeline, oxygen supply agent gas humidification, the oxidant gas after humidification is changed through electromagnetism
Enter the cathode of fuel cell pile after to valve and bypass oxidant gas mixing.
E, as 0 ＜ I≤nA of pile output current, drying fuel gas enters humidifier A by shut-off valve and humidifies region
It is humidified to fuel gas, the fuel gas of moistening enters the anode of fuel cell pile；Oxidant gas is direct by shut-off valve
Region is humidified into humidifier C, D, bypass oxidant gas proportioning valve is opened, and B humidifications region is switched to by solenoid directional control valve
Oxidant gas pipeline, oxygen supply agent gas humidification, the oxidant gas after humidification enter fuel cell electricity through solenoid directional control valve
The cathode of heap, bypass oxidant gas proportioning valve are closed；
Wherein I is pile output current, 0 ＜ n ＜ m ＜ k.
Further, for the solenoid directional control valve in the humidifications of B, C two region when being switched to fuel gas pipeline, solenoid directional control valve is first
It changes to emptying pattern and the fuel gas of humidification is first emptied into the several seconds into fuel gas collection case, wait for that B, C two is humidified in region
After oxidant gas is drained, the fuel gas of moistening enters back into the anode of fuel cell pile；B, the electromagnetism in the humidifications of C two region changes
To valve when being switched to oxidant gas pipeline, solenoid directional control valve first changes to emptying pattern by the oxidant gas of humidification first to being
System is outer to empty the several seconds, and after the oxidant gas in the humidifications of B, C two region is drained, the oxidant gas of moistening enters back into fuel electricity
The cathode of pond pile.
The present invention operation principle be：Fuel cell initial start stage operating mode sets relevant parameter, dry fuel gas
Body and oxidant gas enter humidifier from fuel gas air admission hole and oxidant gas air admission hole respectively, and flow is from airflow direction
Direction is entered in humidifier, permeable moistened membrane can only penetrate water, cannot penetrate gas, water pass through diffusion and moistened membrane
The differential water pressures of both sides penetrate into dry gas side, and to be humidified to gas, the gas after humidification enters in pile.
Advantageous effect：（1）Gas humidifier is divided into several humidification areas by the present invention according to pile power and operating condition
Domain, the area for humidifying region to adjust cathode gas according to the electric current of pile output adjust the humidity of cathode gas, will be remaining
Region humidified for anodic gas, so that humidifier is all carried out whole work under any operating mode of fuel cell, improve fuel electricity
Pond humidifier humidifies efficiency is controlled and is humidified by system zoning design and more effectively controls the humidity of gas humidification and more intelligent
Humidifier utilization rate is improved, stabilization and the raising of Performance data are conducive to, improves fuel battery performance and service life；One adds simultaneously
Wet device humidifies two kinds of gases simultaneously, keeps fuel cell system more compact, is conducive to the densification of fuel cell system, easy hair
Exhibition；In addition circular humidifier body inner periphery is distributed several humidification regions, can improve the gas of humidifying unit in humidification region
The contact area of body and humidification medium, the further humidifying effect for promoting humidifier；
（2）The fuel battery humidifying unit of the present invention includes the gas stream field plate of cylinder, is wrapped in outside gas stream field plate
The permeable moistened membrane of side, and it is set in the humidification medium flow field field plate on the outside of permeable moistened membrane, it is set on the side wall of gas stream field plate
Several gas flows are equipped with, gas flow is closed by permeable moistened membrane, is humidified between medium flow field field plate and permeable moistened membrane
Cavity is medium runner, and same humidifying unit can as needed add the fuel gas of fuel cell and oxidant gas
It is wet, the humidifier quantity of fuel cell system is reduced, reduces fuel cell system volume, keeps system structure compact, reduces production
Cost；Meanwhile the width and depth of the gas flow of gas stream field plate side wall can according to actual needs, be adjusted, to control gas
The humidity of body humidification, avoids fuel gas and oxidant gas humidity excessive, causes cathode water logging, damages fuel cell pile；
（3）The present invention is advantageously reduced in the end plate of the both ends setting with pressure buffer in humidification region since temperature becomes
The probability of humidifier size caused by changing and the leakage and interior leakage caused by pressure change, while the gas pressure of internal humidifying unit
Small, at low cost, the development that conducive to fuel cell system moduleization integrates mating convenient for being done for fuel cell mass is dropped.
Description of the drawings
Fig. 1 is the structural schematic diagram of round smart fuel cell humidifier of the present invention；
Fig. 2 is round smart fuel cell humidifier sectional view of the present invention；
Fig. 3 is the structural schematic diagram of humidifying unit of the present invention；
Fig. 4 is the piping arrangement of humidifier in the embodiment of the present invention；
Wherein, 1- humidifier bodies, 11- gas streams field plate, the permeable moistened membranes of 12-, 13- humidification medium flow fields field plate, 14- gas
Body runner, 15- medium runners, 1a- A humidifications region, 1b-B humidifications region, 1c-C humidifications region, 1d-D humidifications region, 20-
It humidifies medium entrance, 21- humidifications media outlet, 22- and does fuel gas inlets, 23- wet fuels gas vent, 24- dry oxidations
Agent gas feed, 25- wet oxygen agents gas vent, the public humid gas outlet in the public dry gas import in the areas 26-B, the areas 27- B,
The public dry gas import in the areas 28- C, the public humid gas outlet in the areas 29- C.
Specific implementation mode
Technical solution of the present invention is described in detail below by attached drawing, but protection scope of the present invention is not limited to
The embodiment.
Embodiment：A kind of circle smart fuel cell humidifier, as shown in Figure 1.Include the humidifier body 1 of cylinder,
Along the setting of axle center circumference there are four region is humidified in humidifier body 1, as shown in Fig. 2, wherein A humidifications region 1a is fuel gas
Region is humidified, it is that fuel gas oxidation agent gas shares humidification region that B, C, which humidify region 1b, 1c, and it is oxidant that D, which humidifies region 1d,
Gas humidification region, each both ends for humidifying region are sealed by the end plate with buffer unit, are also set up on the axle center of two end plates
There are humidification medium entrance 20 and humidification media outlet 21, each humidification medium runner humidified in region to share humidification medium entrance 20
It is interconnected with humidification media outlet 21, A humidifications region 1a's is provided at both ends with dry fuel gas inlets 22 and wet fuel gas
Outlet 23, D humidifications region 1d's is provided at both ends with dry oxidation agent gas feed 24 and wet oxygen agent gas vent 25, and B humidifies area
The both ends for being provided at both ends with the public humid gas outlet of the public dry gas import 26 in the areas B and the areas B 27, C humidifications region 1c of domain 1b are set
It is equipped with the public humid gas of the public dry gas import 28 in the areas C and the areas C and exports 29.
Multiple humidifying units are distributed in each humidification region, as shown in figure 3, humidifying unit includes cylindrical gas
Flow-field plate 11, is wrapped in the permeable moistened membrane 12 in 11 outside of gas stream field plate, and is set in adding for 12 outside of permeable moistened membrane
Humid medium flow-field plate 13 is provided with several gas flows 14 on the side wall of gas stream field plate 11, and gas flow 14 passes through permeable increasing
Wet film 12 is closed, and the cavity between humidification medium flow field field plate 13 and permeable moistened membrane 12 is medium runner 15.Permeable moistened membrane is
Hollow-fibre membrane, fluorine resin film, PBI films, zwitterion film one of which, gas-liquid water conservancy diversion dispersion plate and gas partitions dispersion
Plate is made of metal or nonmetallic materials.
The humidification method of above-mentioned round smart fuel cell humidifier, includes the following steps：
（1）When the pile output current of fuel cell is ascending, the humidification step in 4 humidification regions of humidifier
For：
A, as 0≤I of pile output current≤nA, drying fuel gas enters humidifier A by shut-off valve and humidifies region,
It is humidified in the humidification channel that A humidifies region, the fuel gas after humidification is directly entered the anode of fuel cell pile；Oxidant
Gas enters the tri- humidification regions humidifier B, C, D by shut-off valve and is humidified, and the oxidant gas after humidification passes through electromagnetism
Reversal valve enters the cathode of fuel cell pile；
B, as pile output current nA ＜ I≤mA, drying fuel gas enters humidifier A, B two by shut-off valve and humidifies
Region, A humidify region and are humidified directly to fuel gas, and B humidifications region is switched to fuel gas pipeline by solenoid directional control valve, gives
Fuel gas humidifies, and the fuel gas of moistening enters back into the anode of fuel cell pile；Oxidant gas is direct by shut-off valve
It is opened into the humidification regions humidifier C, D and oxidant gas bypass, bypass ratio valve, C, D two humidifies region oxygen supply agent
Gas humidification, the oxidant gas after humidification summarize with bypass oxidant gas into fuel cell pile after solenoid directional control valve
Cathode；
C, as pile output current mA ＜ I≤kA, drying fuel gas enters humidifier A, B, C tri- by shut-off valve and adds
Wet zone, A, B humidify region and are humidified directly to fuel gas, and C humidifications region is switched to fuel gas pipe by solenoid directional control valve
Road, humidifies to fuel gas, and the fuel gas of moistening enters back into the anode of fuel cell pile；Oxidant gas passes through shut-off valve
It is directly entered the humidification regions humidifier D and oxidant gas bypass, oxidant gas bypass ratio valve is opened, D humidifies region
Oxygen supply agent gas humidification, oxidant gas and bypass oxidant gas after humidification summarize the moon into fuel cell pile
Pole；
（2）When the pile output current of fuel cell is descending, the humidification step in 4 humidification regions of humidifier
For：
D, as pile output current nA ＜ I≤mA, drying fuel gas enters humidifier A, B by shut-off valve and humidifies area
Domain is humidified to fuel gas, and the fuel gas of moistening enters the anode of fuel cell pile；Oxidant gas is straight by shut-off valve
It taps into the humidification regions humidifier D and oxidant gas bypass, bypass oxidant gas proportioning valve is opened, and it is logical that C humidifies region
It crosses solenoid directional control valve and is switched to oxidant gas pipeline, oxygen supply agent gas humidification, the oxidant gas after humidification is changed through electromagnetism
Enter the cathode of fuel cell pile after to valve and bypass oxidant gas mixing.
E, as 0 ＜ I≤nA of pile output current, drying fuel gas enters humidifier A by shut-off valve and humidifies region
It is humidified to fuel gas, the fuel gas of moistening enters the anode of fuel cell pile；Oxidant gas is direct by shut-off valve
Region is humidified into humidifier C, D, bypass oxidant gas proportioning valve is opened, and B humidifications region is switched to by solenoid directional control valve
Oxidant gas pipeline, oxygen supply agent gas humidification, the oxidant gas after humidification enter fuel cell electricity through solenoid directional control valve
The cathode of heap, bypass oxidant gas proportioning valve are closed；
Wherein I is pile output current, 0 ＜ n ＜ m ＜ k.B, the solenoid directional control valve in the humidifications of C two region is being switched to fuel
When gas piping, solenoid directional control valve first changes to emptying pattern and the fuel gas of humidification is first emptied number into fuel gas collection case
Second, after the oxidant gas in the humidifications of B, C two region is drained, the fuel gas of moistening enters back into the sun of fuel cell pile
Pole；B, for the solenoid directional control valve in the humidifications of C two region when being switched to oxidant gas pipeline, solenoid directional control valve first changes to emptying pattern
The oxidant gas of humidification is first emptied into the several seconds to outside system, after the oxidant gas in the humidifications of B, C two region is drained, moistening
Oxidant gas enter back into the cathode of fuel cell pile.
As described above, although the present invention has been indicated and described with reference to specific preferred embodiment, must not explain
For the limitation to invention itself.It without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right
Various changes can be made in the form and details for it.
Claims (3)
1. a kind of humidification method of circle smart fuel cell humidifier, the circle smart fuel cell humidifier, including circle
Cylindrical humidifier body, the humidifier body is interior to be provided at least four humidification regions along axle center circumference, including one
A fuel gas humidifies region, an oxidant gas humidification region and at least two public humidification regions, each humidification region
Inside it is distributed with multiple humidifying units；
The humidifying unit includes cylindrical gas stream field plate, the permeable moistened membrane being wrapped on the outside of the gas stream field plate,
And it is set in the humidification medium flow field field plate on the outside of the permeable moistened membrane, it is provided on the side wall of the gas stream field plate several
Gas flow is used for communicating fuel gas or oxidant gas, and the gas flow is closed by the permeable moistened membrane, described
The cavity humidified between medium flow field field plate and the permeable moistened membrane is medium runner, for humidification water or the humidifier of circulating；
The both ends sealing in each humidification region, and both ends are respectively arranged with and connect with the gas flow of humidifying unit in each humidification region
Logical dry gas import and humid gas outlet, and the humidification medium entrance and humidification that are connected to the medium runner of humidifying unit are situated between
Matter exports；
It is characterised in that it includes following steps：
（1）At fuel cell start-up initial stage, dry fuel gas enters fuel gas humidification region, and humidifies area in fuel gas
Distribution in the gas flow of humidifying unit in domain；Dry oxidant gas enters oxidant gas humidification region and at least one
In public humidification region in oxidant gas pipeline, and it is distributed in the gas flow in several humidification regions；Humidify medium
Entered by the negative direction of gas inflow direction in the medium runner in each humidification region, the moisture humidified in medium is made by spreading
With entering in gas flow, dry fuel gas and oxidant gas are humidified；
（2）Fuel cell operation for a period of time after, when the output current of pile is more than the parameter of setting, at least one public affairs
Humidification region is converted to fuel gas pipeline successively altogether, and dry fuel gas enters in transformed public humidification region, with
Incrementally increasing for electric current, conversion to the public humidification region of fuel gas pipeline is stepped up；
（3）Fuel cell pile output current from large to small when, output current less than setting parameter, it is at least one described
Public humidification region is converted to oxidant gas pipeline successively again, and dry oxidant gas enters transformed public humidification area
In domain, with gradually reducing for electric current, conversion to the public humidification region of oxidant gas pipeline is stepped up.
2. the humidification method of circle smart fuel cell humidifier according to claim 1, which is characterized in that the humidification
Region is 4, and it is that fuel gas humidifies region that wherein A, which humidifies region, and it is to share humidification region that B, C, which humidify region, and D humidifies region
Region is humidified for oxidant gas, when the pile output current of fuel cell is ascending, 4 humidification regions of humidifier
Humidifying step is：
A, as 0≤I of pile output current≤nA, drying fuel gas enters humidifier A by shut-off valve and humidifies region, in A
It humidifies in the humidification channel in region and humidifies, the fuel gas after humidification is directly entered the anode of fuel cell pile；Oxidant gas
Body enters the tri- humidification regions humidifier B, C, D by shut-off valve and is humidified, and the oxidant gas after humidification is changed by electromagnetism
Enter the cathode of fuel cell pile to valve；
B, as pile output current nA ＜ I≤mA, drying fuel gas enters humidifier A, B two by shut-off valve and humidifies area
Domain, A humidify region and are humidified directly to fuel gas, and B humidifications region is switched to fuel gas pipeline by solenoid directional control valve, to combustion
Expect that gas humidification, the fuel gas of moistening enter back into the anode of fuel cell pile；Oxidant gas by shut-off valve directly into
Enter the humidification regions humidifier C, D and oxidant gas bypass, bypass ratio valve are opened, C, D two humidifies region oxygen supply agent gas
Body humidifies, and the oxidant gas after humidification summarizes with bypass oxidant gas into fuel cell pile after solenoid directional control valve
Cathode；
C, as pile output current mA ＜ I≤kA, drying fuel gas enters humidifier A, B, C tri- by shut-off valve and humidifies area
Domain, A, B humidify region and are humidified directly to fuel gas, and C humidifications region is switched to fuel gas pipeline by solenoid directional control valve, gives
Fuel gas humidifies, and the fuel gas of moistening enters back into the anode of fuel cell pile；Oxidant gas is direct by shut-off valve
It is opened into the humidification regions humidifier D and oxidant gas bypass, oxidant gas bypass ratio valve, D humidifies region oxygen supply
Oxidant gas humidifies, and the oxidant gas and bypass oxidant gas after humidification summarize the cathode into fuel cell pile；
When the pile output current of fuel cell is descending, the humidification step in 4 humidification regions of humidifier is：
D, as pile output current nA ＜ I≤mA, drying fuel gas by shut-off valve enter the humidification region humidifier A, B to
Fuel gas humidifies, and the fuel gas of moistening enters the anode of fuel cell pile；Oxidant gas by shut-off valve directly into
Enter the humidification regions humidifier D and oxidant gas bypass, bypass oxidant gas proportioning valve is opened, and C humidifications region passes through electricity
Magnetic reversal valve is switched to oxidant gas pipeline, oxygen supply agent gas humidification, and the oxidant gas after humidification is through solenoid directional control valve
With the cathode for entering fuel cell pile after bypass oxidant gas mixing;
E, as 0 ＜ I≤nA of pile output current, drying fuel gas enters the humidification regions humidifier A to combustion by shut-off valve
Expect that gas humidification, the fuel gas of moistening enter the anode of fuel cell pile；Oxidant gas is directly entered by shut-off valve
Humidifier C, D humidify region, and bypass oxidant gas proportioning valve is opened, and B humidifications region is switched to oxidation by solenoid directional control valve
Agent gas piping, oxygen supply agent gas humidification, the oxidant gas after humidification enter fuel cell pile through solenoid directional control valve
Cathode, bypass oxidant gas proportioning valve are closed；
Wherein I is pile output current, 0 ＜ n ＜ m ＜ k.
3. the humidification method of circle smart fuel cell humidifier according to claim 2, which is characterized in that B, C two adds
For the solenoid directional control valve of wet zone when being switched to fuel gas pipeline, solenoid directional control valve first changes to emptying pattern by the fuel of humidification
Gas first empties the several seconds into fuel gas collection case, after the oxidant gas in the humidifications of B, C two region is drained, the combustion of moistening
Material gas enters back into the anode of fuel cell pile；B, the solenoid directional control valve in the humidifications of C two region is being switched to oxidant gas pipe
Lu Shi, solenoid directional control valve first change to emptying pattern and the oxidant gas of humidification are first emptied the several seconds to outside system, wait for that B, C two is humidified
After oxidant gas in region is drained, the oxidant gas of moistening enters back into the cathode of fuel cell pile.
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| CN109378505B (en) * | 2018-10-18 | 2024-03-22 | 南通博凡能源有限公司 | Humidifier assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1459882A (en) * | 2002-05-24 | 2003-12-03 | 上海神力科技有限公司 | High effect humidifying device used for fuel battery |
| CN101425587A (en) * | 2007-10-30 | 2009-05-06 | 上海神力科技有限公司 | Integrated apparatus used for fuel cell humidifying |
| CN205752393U (en) * | 2016-06-22 | 2016-11-30 | 江苏绿遥燃料电池系统制造有限公司 | A kind of circular smart fuel cell humidifier |
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| JP2007205678A (en) * | 2006-02-03 | 2007-08-16 | Honda Motor Co Ltd | Humidifier |
| KR100911563B1 (en) * | 2007-08-29 | 2009-08-10 | 현대자동차주식회사 | Humidifier for fuel cell vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1459882A (en) * | 2002-05-24 | 2003-12-03 | 上海神力科技有限公司 | High effect humidifying device used for fuel battery |
| CN101425587A (en) * | 2007-10-30 | 2009-05-06 | 上海神力科技有限公司 | Integrated apparatus used for fuel cell humidifying |
| CN205752393U (en) * | 2016-06-22 | 2016-11-30 | 江苏绿遥燃料电池系统制造有限公司 | A kind of circular smart fuel cell humidifier |
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