CN110429306A - A kind of fuel cell water balance test equipment and method - Google Patents
A kind of fuel cell water balance test equipment and method Download PDFInfo
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- CN110429306A CN110429306A CN201910690111.2A CN201910690111A CN110429306A CN 110429306 A CN110429306 A CN 110429306A CN 201910690111 A CN201910690111 A CN 201910690111A CN 110429306 A CN110429306 A CN 110429306A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 152
- 239000000446 fuel Substances 0.000 title claims abstract description 38
- 238000012360 testing method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 95
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 239000001257 hydrogen Substances 0.000 claims abstract description 42
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 42
- 238000003487 electrochemical reaction Methods 0.000 claims abstract description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 36
- 239000007789 gas Substances 0.000 claims description 14
- 238000010998 test method Methods 0.000 claims description 11
- 238000009736 wetting Methods 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 3
- 230000005518 electrochemistry Effects 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract description 15
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 3
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04492—Humidity; Ambient humidity; Water content
- H01M8/04514—Humidity; Ambient humidity; Water content of anode exhausts
-
- 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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04492—Humidity; Ambient humidity; Water content
- H01M8/04522—Humidity; Ambient humidity; Water content of cathode exhausts
-
- 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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04574—Current
- H01M8/04589—Current of fuel cell stacks
-
- 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
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04664—Failure or abnormal function
- H01M8/04679—Failure or abnormal function of fuel cell stacks
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- 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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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
It includes anode export dew point measurement device, cathode outlet dew point measurement device, anode heating device, cathode heating arrangement, anode humidifier, cathode humidifier, anode inlet dew point measurement device, cathode inlet dew point measurement device and current measuring device that the present invention, which provides a kind of fuel cell water balance test equipment and method, equipment,；Anode (cathode) outlet dew point measurement device is used to measure the humidity of the hydrogen (air) of discharge, and anode (cathode) heating device is used to make to be discharged from anode (cathode) exhaust outlet water；Anode (cathode) humidifier is used to humidify the hydrogen (air) of importing, anode (cathode) entrance dew point measurement device is used to measure the humidity of the hydrogen (air) after humidification, and current measuring device is used to measure the size of current of electrochemical reaction in pile.Technical solution proposed by the present invention is intended to keep the water balance in Proton Exchange Membrane Fuel Cells, improves battery performance and service life.
Description
Technical field
The present invention relates to field of fuel cell technology more particularly to a kind of fuel cell water balance test equipments and method.
Background technique
Proton Exchange Membrane Fuel Cells has the characteristics that high energy efficiency, low noise, high temperature starting performance are good and environmental-friendly,
Through the hot spot for becoming energy field research.Since the electrochemical reaction of Proton Exchange Membrane Fuel Cells is in water-gas-proton (electricity
Son) it carries out on three phase boundary, and itself electrochemical reaction can also generate water, it is excessive when the hypervolia in Catalytic Layer
Water can water down the concentration of reaction gas, while block the gas passage of reaction zone, cause waterflooding electrode to influence battery performance；
Hypovolia can cause the proton conductivity of proton exchange membrane to decline in proton exchange membrane, lead to the decline of battery performance.
Therefore, reinforce the water management of proton exchange membrane, keep the water balance in Proton Exchange Membrane Fuel Cells be improve battery performance and
One critical issue in service life.
Summary of the invention
In view of this, the embodiment provides a kind of fuel cell water balance test equipment and methods, it is intended to protect
The water balance in Proton Exchange Membrane Fuel Cells is held, battery performance and service life are improved.
The embodiment of the present invention provides a kind of fuel cell water balance test equipment, including anode export dew point measurement dress
It sets, cathode outlet dew point measurement device, anode heating device, cathode heating arrangement and current measuring device；
The anode export dew point measurement device is connected to the anode exhaust of the pile by guide pipeline, for surveying
The humidity of the hydrogen of discharge is measured, the cathode exhaust vent of the cathode outlet dew point measurement device and the pile passes through guide pipeline
Connection, the humidity of the air for measuring discharge；
The anode heating device is used to heat the guide pipeline being connected with the anode exhaust, so that from the sun
Pole exhaust outlet is discharged water；The cathode heating arrangement is for adding the guide pipeline being connected with the cathode exhaust vent
Heat, so as to be discharged from the cathode exhaust vent water；The current measuring device is for measuring electrochemistry in the pile
The size of current of reaction.
It further, further include anode humidifier, cathode humidifier, anode inlet dew point measurement device and cathode inlet
Dew point measurement device；
Anode inlet dew point measurement device side is connected to the anode inlet of the pile by guide pipeline, institute
It states the anode inlet dew point measurement device other side and is connected to the anode humidifier by guide pipeline, the anode humidifier is used
In the hydrogen humidification to importing, the anode inlet dew point measurement device is used to measure the humidity of the hydrogen after humidification；
Cathode inlet dew point measurement device side is connected to the cathode inlet mouth of the pile by guide pipeline, institute
It states the cathode inlet dew point measurement device other side and is connected to the cathode humidifier by guide pipeline, the cathode humidifier is used
In the air wetting to importing, the cathode inlet dew point measurement device is used to measure the humidity of the air after humidification.
Further, the anode heating device is set on the anode export dew point measurement device；And/or
The cathode heating arrangement is set on the cathode outlet dew point measurement device.
Further, the anode heating device is set between the anode export dew point measurement device and the pile.
Further, the institute between the anode heating device and the anode export dew point measurement device, the pile
It states and is respectively equipped with one layer of heat preservation layer on the outside of guide pipeline.
Further, the cathode heating arrangement is set between the cathode outlet dew point measurement device and the pile.
Further, the institute between the cathode heating arrangement and the cathode outlet dew point measurement device, the pile
It states and is respectively equipped with one layer of heat preservation layer on the outside of guide pipeline.
The embodiment of the present invention also provides a kind of fuel cell water balance test method, which is characterized in that including following step
It is rapid:
S1 is directed respectively into dry air and hydrogen, the hydrogen and cathode inlet mouth from institute to pile and anode inlet
It states air and electrochemical reaction generation water occurs under the effect of the catalyst, measured using current measuring device electrochemical in the pile
The size of current for learning reaction, the proportionate relationship between generation water and the electric current according to the electrochemical reaction, obtains
The generation water A1 generated to reaction；
S2 is heated using the guide pipeline that anode heating device pair is connected with the anode exhaust, so that from the anode
Water, the guide pipeline heating being connected using cathode heating arrangement pair with the cathode exhaust vent of exhaust outlet discharge, so that
It is discharged from the cathode exhaust vent water；
The humidity for the hydrogen that S3 is discharged using the measurement of anode export dew point measurement device from the anode exhaust of pile, utilizes
The humidity of air that the measurement of cathode outlet dew point measurement device is discharged from the cathode exhaust vent of pile, according to humidity and water content it
Between relationship, obtain the water content A3 in the water content A2 and the air in the hydrogen；
S4 obtains retaining water A=A1-A2-A3 in the pile；
If the S5 reservation water A is zero, determine that water is in equilibrium state in the fuel cell；If the reservation water
It measures A and is greater than zero, then determine that water logging occurs in the pile；If the reservation water A less than zero, determines to occur in the pile
Film is dry.
Further, if the reservation water is greater than zero and is greater than the first preset threshold, determine water logging in the pile
Degree is serious；
If the reservation water is less than zero and less than the second preset threshold, it is serious to determine that the pile inner membrance does degree.
Further, before step S1 further include:
S11 humidifies the hydrogen imported from the anode inlet using anode humidifier, utilizes cathode humidification
The air wetting of the device to importing from the cathode inlet mouth measures the hydrogen using anode inlet dew point measurement device
Humidity, the humidity of the air is measured using cathode inlet dew point measurement device, according to the relationship between humidity and water content,
Obtain the humidification water A4 of the hydrogen and the humidification water A5 of the air；
In step S4, obtain retaining water A=A1+A4+A5-A2-A3 in the pile.
The technical solution that the embodiment of the present invention provides, which has the benefit that, measures electrification by current measuring device
The size of current of reaction is learned, so as to the generation water that quantitative measurment electrochemical reaction generates, passes through anode heating device and yin
Pole heating device makes to be discharged water with gas phase by dew point measurement device, passes through anode export dew point measurement device and cathode
The water for exporting dew point measurement device quantitative measurment discharge, so as to accurately obtain the reservation water in pile, and then can quantify
Judge that water logging whether occurs in pile or film is dry, compared with conventional liquid water gaging method, there is better operability and higher essence
Degree.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fuel cell water balance test equipment provided by the invention；
Fig. 2 is the flow diagram of fuel cell water balance test method first embodiment provided by the invention；
Fig. 3 is the flow diagram of fuel cell water balance test method second embodiment provided by the invention；
In figure: pile 1, anode export dew point measurement device 2, cathode outlet dew point measurement device 3, anode heating device 4,
Cathode heating arrangement 5, anode humidifier 6, cathode humidifier 7, anode inlet dew point measurement device 8, cathode inlet dew point measurement
Device 9, guide pipeline 10, insulating layer 11.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
Generally, hydrogen is imported to the anode inlet of pile 1, imports air to the cathode inlet mouth of pile 1, is being catalyzed
Under agent effect, hydrogen occurs electrochemical reaction with the oxygen in air and generates water, and during the reaction, proton in hydrogen is from sun
Pole enters to cathode by proton exchange membrane and reacts with the oxygen in air, so that generating water focuses primarily upon cathode, makes
The water for obtaining cathode side increases, and the concentration difference due to water in proton exchange membrane two sides, water will extend over proton exchange membrane from cathode
To anode diffusion, therefore generation water a part can be discharged from anode exhaust with the hydrogen reacted is had neither part nor lot in, and a part can be from yin
Pole exhaust outlet is discharged with the air reacted is had neither part nor lot in.
Conventional flat weighs in test method, the content of the moisture of disengaging pile 1 is determined by weighing liquid water, to calculate
The size for retaining water in pile 1 when being discharged due to moisture from 1 outlet side of pile, can remain in guide pipeline 10 after condensate moisture
In, lead to weighing inaccuracy.
Referring to Figure 1, the embodiment of the present invention provides a kind of fuel cell water balance test equipment, including current measurement dress
Set (not shown), anode export dew point measurement device 2, cathode outlet dew point measurement device 3, anode heating device 4, cathode
Heating device 5, anode humidifier 6, cathode humidifier 7, anode inlet dew point measurement device 8 and cathode inlet dew point measurement dress
Set 9.
The current measuring device is used to measure the size of current of electrochemical reaction in pile 1, anti-according to the electrochemistry
Proportionate relationship between generation water and the electric current described in answering, obtains the generation water.It is understood that being catalyzed
Under agent effect, hydrogen occurs electrochemical reaction with the oxygen in air and generates water, generates water and kinetic current is in stringent ratio
Relationship (this is the prior art, is not illustrated herein) can be determined the molal quantity for generating water by kinetic current size
Obtain the generation water A1 that reaction generates.
The anode export dew point measurement device 2 is connected to the anode exhaust of the pile 1 by guide pipeline 10, is used
In the humidity of the hydrogen of measurement discharge, the cathode exhaust vent of the cathode outlet dew point measurement device 3 and the pile 1, which passes through, to be led
Feed channel 10 is connected to, the humidity of the air for measuring discharge；It should be understood that high-precision dew point meter measurement gas is wet
Degree (absolutely degree humidity and relative humidity), according to the relationship of gas humidity and gas water content, in the hydrogen that is discharged
Water content A3 in water content A2 and the air of discharge, circular are the prior art, are not illustrated herein.
The anode heating device 4 is used to heat the guide pipeline 10 being connected with the anode exhaust, so that from institute
The water of anode exhaust discharge is stated, the cathode heating arrangement 5 is used for the gas-guide tube being connected with the cathode exhaust vent
Road 10 heats, so as to guarantee the water being discharged with gas with gas phase process from the water of cathode exhaust vent discharge
Dew point measurement device can prevent the water of discharge from condensing in guide pipeline 10, guarantee the accuracy of discharge water gaging, improve dew point
The accuracy of measuring device greatly improves the accuracy and feasibility of water balancing testing method.Specifically, the anode heating
Device 4 can be set on the anode export dew point measurement device 2, and the cathode heating arrangement 5 can be set to the cathode outlet and reveal
In point measuring device 3.
In the present embodiment, the anode heating device 4 is set to the anode export dew point measurement device 2 and the pile 1
Between, the cathode heating arrangement 5 is set between the cathode outlet dew point measurement device 3 and the pile 1, and the anode adds
It is respectively equipped on the outside of the guide pipeline 10 between thermal 4 and the anode export dew point measurement device 2, the pile 1
One layer of heat preservation layer 11, it is described between the cathode heating arrangement 5 and the cathode outlet dew point measurement device 3, the pile 1
It is respectively equipped with one layer of heat preservation layer 11 on the outside of guide pipeline 10, to prevent the water of discharge from condensing in guide pipeline 10, guarantees discharge
Water passes through dew point measurement device with gas phase, greatly improves the accuracy and feasibility of water balancing testing method.
Retain water A=A1-A2-A3 in the pile 1；If the reservation water A is zero, the fuel cell is determined
Interior water is in equilibrium state；If the reservation water A is greater than zero, determine that water logging occurs in the pile 1, it will hinder gas
Diffusion, equally can also be such that battery performance reduces, or even can not work normally battery；If the reservation water A sentences less than zero
Film occurs in the fixed pile 1 to do, i.e., proton exchange membrane will slowly be done film, reduce resistance increase, voltage, and then influence battery
Performance.Further, if the reservation water is greater than zero and is greater than the first preset threshold, determine water logging journey in the pile 1
Degree is serious, if the reservations water is less than zero and less than the second preset threshold, determines that the dry degree of 1 inner membrance of pile is serious.
In the Proton Exchange Membrane Fuel Cells course of work, the wettability that proton exchange membrane needs to keep certain is just able to maintain
The high conductance of proton and good operation characteristic.Enter that heap air humidity is too low to will lead to proton exchange membrane overdrying, hands over proton
The ability that film loses proton conducting is changed, dry film, shrinkage are caused when serious or even is ruptured；It is excessively high to enter heap air humidity, causes in film
It will cause water logging containing hypervolia, block gas flow, increasing concentration polarization causes battery performance to decline to a great extent.
In order to adjust the humidity in pile 1, the anode of 8 side of anode inlet dew point measurement device and the pile 1
Air inlet is connected to by guide pipeline 10, and 8 other side of anode inlet dew point measurement device passes through with the anode humidifier 6
Guide pipeline 10 is connected to, and the anode humidifier 6 is used to humidify the hydrogen of importing, the anode inlet dew point measurement device 8
For measuring the humidity of the hydrogen after humidifying；The cathode of 9 side of cathode inlet dew point measurement device and the pile 1
Air inlet is connected to by guide pipeline 10, and 9 other side of cathode inlet dew point measurement device passes through with the cathode humidifier 7
Guide pipeline 10 is connected to, and the cathode humidifier 7 is for the air wetting to importing, the cathode inlet dew point measurement device 9
For measuring the humidity of the air after humidifying.
It being used to humidify the hydrogen of importing using anode humidifier 6, cathode humidifier 7 is used for the air wetting to importing,
It is adjusted into heap air humidity, to keep fuel battery inside water balance that fuel battery performance and service life can be improved.Utilize yin
Pole entrance dew point measurement device 9 measures the humidity of the air, measures the hydrogen using anode inlet dew point measurement device 8
Humidity, according to the relationship between humidity and water content, the sky after the humidification water A4 of the hydrogen and humidification after being humidified
The humidification water A5 of gas；It obtains retaining water A=A1+A4+A5-A2-A3 in the pile 1.
In technical solution provided by the invention, filled by anode inlet dew point measurement device 8 and cathode inlet dew point measurement
9 quantitative measurment inflows are set, the size of current of electrochemical reaction is measured by current measuring device, so as to quantitative measurment electrification
The generation water that reaction generates is learned, makes that water is discharged with gas phase process by anode heating device 4 and cathode heating arrangement 5
Dew point measurement device, the water being discharged by anode export dew point measurement device 2 and 3 quantitative measurment of cathode outlet dew point measurement device
Whether amount so as to accurately obtain the reservation water in pile 1, and then can occur water logging in rational judgment pile 1 or film is dry, compared with
Conventional liquid water gaging method, there is better operability and higher precision.
The embodiment of the present invention also provides a kind of fuel cell water balance test method, refers to Fig. 2, and Fig. 2 is the present invention
The flow diagram of fuel cell water balance test method first embodiment.
In the first embodiment, the fuel cell water balance test method the following steps are included:
S1 is directed respectively into dry air and cathode inlet mouth from hydrogen to pile 1 and anode inlet, the hydrogen and
Electrochemical reaction occurs under the effect of the catalyst and generates water for the air, is measured in the pile 1 using current measuring device
The size of current of electrochemical reaction, the ratio between generation water and the electric current according to the electrochemical reaction are closed
System obtains the generation water A1 that reaction generates；
S2 heats the guide pipeline 10 being connected with the anode exhaust using anode heating device 4, so that from described
Anode exhaust is discharged water, is added using cathode heating arrangement 5 to the guide pipeline 10 being connected with the cathode exhaust vent
Heat, so as to be discharged from the cathode exhaust vent water；
S3 measures the humidity for the hydrogen being discharged from the anode exhaust of pile 1, benefit using anode export dew point measurement device 2
The humidity of air being discharged from the cathode exhaust vent of pile 1 is measured with cathode outlet dew point measurement device 3, according to humidity and aqueous
Relationship between amount obtains the water content A3 in the water content A2 and the air in the hydrogen；
S4 obtains retaining water A=A1-A2-A3 in the pile 1；
If the S5 reservation water A is zero, determine that water is in equilibrium state in the fuel cell；If the reservation water
It measures A and is greater than zero, then determine that water logging occurs in the pile 1；If the reservation water A less than zero, determines hair in the pile 1
Filming is dry.
Further, if the reservation water is greater than zero and is greater than the first preset threshold, determine water logging in the pile 1
Degree is serious；
If the reservation water is less than zero and less than the second preset threshold, it is serious to determine that 1 inner membrance of pile does degree.
Fig. 3 is referred to, Fig. 3 is the flow diagram of fuel cell water balance test method second embodiment of the present invention.
In a second embodiment, before step S1 further include:
S11 humidifies the hydrogen imported from the anode inlet using anode humidifier, utilizes cathode humidification
The air wetting of the device to importing from the cathode inlet mouth, measures the hydrogen using anode inlet dew point measurement device 8
The humidity of gas measures the humidity of the air using cathode inlet dew point measurement device 9, according to the pass between humidity and water content
System, obtains the humidification water A4 of the hydrogen and the humidification water A5 of the air；
In step S4, obtain retaining water A=A1+A4+A5-A2-A3 in the pile 1.
Herein, the nouns of locality such as related front, rear, top, and bottom are to be located in figure with components in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of fuel cell water balance test equipment, which is characterized in that including anode export dew point measurement device, cathode outlet
Dew point measurement device, anode heating device, cathode heating arrangement and current measuring device；
The anode export dew point measurement device is connected to the anode exhaust of pile by guide pipeline, for measuring discharge
The humidity of hydrogen, the cathode outlet dew point measurement device are connected to the cathode exhaust vent of the pile by guide pipeline, are used
In the humidity of the air of measurement discharge；
The anode heating device is used to heat the guide pipeline being connected with the anode exhaust, so as to arrange from the anode
Port is discharged water；The cathode heating arrangement is used to heat the guide pipeline being connected with the cathode exhaust vent, with
Make to be discharged from the cathode exhaust vent water；The current measuring device is for measuring electrochemical reaction in the pile
Size of current.
2. fuel cell water balance test equipment as described in claim 1, which is characterized in that further include anode humidifier, yin
Pole humidifier, anode inlet dew point measurement device and cathode inlet dew point measurement device；
Anode inlet dew point measurement device side is connected to the anode inlet of the pile by guide pipeline, the sun
The pole entrance dew point measurement device other side is connected to the anode humidifier by guide pipeline, the anode humidifier for pair
The hydrogen of importing humidifies, and the anode inlet dew point measurement device is used to measure the humidity of the hydrogen after humidification；
Cathode inlet dew point measurement device side is connected to the cathode inlet mouth of the pile by guide pipeline, the yin
The pole entrance dew point measurement device other side is connected to the cathode humidifier by guide pipeline, the cathode humidifier for pair
The air wetting of importing, the cathode inlet dew point measurement device are used to measure the humidity of the air after humidification.
3. fuel cell water balance test equipment as described in claim 1, which is characterized in that the anode heating device is set to
On the anode export dew point measurement device；And/or
The cathode heating arrangement is set on the cathode outlet dew point measurement device.
4. fuel cell water balance test equipment as described in claim 1, which is characterized in that the anode heating device is set to
Between the anode export dew point measurement device and the pile.
5. fuel cell water balance test equipment as claimed in claim 4, which is characterized in that the anode heating device and institute
It states and is respectively equipped with one layer of heat preservation layer on the outside of the guide pipeline between anode export dew point measurement device, the pile.
6. fuel cell water balance test equipment as described in claim 1, which is characterized in that the cathode heating arrangement is set to
Between the cathode outlet dew point measurement device and the pile.
7. fuel cell water balance test equipment as claimed in claim 6, which is characterized in that the cathode heating arrangement and institute
It states and is respectively equipped with one layer of heat preservation layer on the outside of the guide pipeline between cathode outlet dew point measurement device, the pile.
8. a kind of fuel cell water balance test method, which comprises the following steps:
S1 is directed respectively into dry air and hydrogen, the hydrogen and cathode inlet mouth from the sky to pile and anode inlet
Electrochemical reaction occurs under the effect of the catalyst and generates water for gas, and it is anti-to measure electrochemistry in the pile using current measuring device
The size of current answered, the proportionate relationship between generation water and the electric current according to the electrochemical reaction obtain anti-
The generation water A1 that should be generated；
S2 is heated using the guide pipeline that anode heating device pair is connected with the anode exhaust, so that from the anode exhaust
Water, the guide pipeline heating being connected using cathode heating arrangement pair with the cathode exhaust vent, so that from institute of mouth discharge
State the water of cathode exhaust vent discharge；
The humidity for the hydrogen that S3 is discharged using the measurement of anode export dew point measurement device from the anode exhaust of pile, utilizes cathode
The humidity for the air that outlet dew point measurement device measurement is discharged from the cathode exhaust vent of pile, according between humidity and water content
Relationship obtains the water content A3 in the water content A2 and the air in the hydrogen；
S4 obtains retaining water A=A1-A2-A3 in the pile；
If the S5 reservation water A is zero, determine that water is in equilibrium state in the fuel cell；If the reservation water A
Greater than zero, then determine that water logging occurs in the pile；If the reservation water A less than zero, determines that film occurs in the pile
It is dry.
9. fuel cell water balance test method as claimed in claim 8, which is characterized in that if the reservation water is greater than zero
And when being greater than the first preset threshold, determine that water flooding degree is serious in the pile；
If the reservation water is less than zero and less than the second preset threshold, it is serious to determine that the pile inner membrance does degree.
10. fuel cell water balance test method as claimed in claim 8, which is characterized in that before step S1 further include:
S11 humidifies the hydrogen imported from the anode inlet using anode humidifier, utilizes cathode humidification device
The air wetting to importing from the cathode inlet mouth, measures the wet of the hydrogen using anode inlet dew point measurement device
Degree, the humidity of the air is measured using cathode inlet dew point measurement device, according to the relationship between humidity and water content, is obtained
The humidification water A4 of the hydrogen and humidification water A5 of the air；
In step S4, obtain retaining water A=A1+A4+A5-A2-A3 in the pile.
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