CN109065918A - The variable board-like fuel cell test device in flow field and method - Google Patents
The variable board-like fuel cell test device in flow field and method Download PDFInfo
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- CN109065918A CN109065918A CN201810732256.XA CN201810732256A CN109065918A CN 109065918 A CN109065918 A CN 109065918A CN 201810732256 A CN201810732256 A CN 201810732256A CN 109065918 A CN109065918 A CN 109065918A
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- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 239000000446 fuel Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 138
- 239000002737 fuel gas Substances 0.000 claims abstract description 95
- 239000000919 ceramic Substances 0.000 claims abstract description 69
- 239000011159 matrix material Substances 0.000 claims abstract description 69
- 229910052751 metal Inorganic materials 0.000 claims description 50
- 239000002184 metal Substances 0.000 claims description 50
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 22
- 229910052759 nickel Inorganic materials 0.000 claims description 22
- 230000009467 reduction Effects 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 7
- 239000000567 combustion gas Substances 0.000 claims description 6
- 230000001757 vomitory effect Effects 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000010998 test method Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 11
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 241000218202 Coptis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- 238000013112 stability test Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Classifications
-
- 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
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04365—Temperature; Ambient temperature of other components of a fuel cell or 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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention provides a kind of board-like fuel cell test device and method that flow field is variable, including cathode end plate, anode end plate, gas control unit and temperature sensor, cathode end plate includes cathodic ceramic matrix, at least one first gas passage is arranged inside, air forms first direction air stream by first gas passage in cathode air chamber；Anode end plate includes anode ceramic matrix, at least one second gas channel, third gas channel and the 4th gas passage is arranged inside, fuel gas enters anode gas chamber by second channel, third channel or fourth lane, is respectively formed identical as first direction, vertical and opposite second direction, third direction or fourth direction fuel gas stream；Gas control unit controls second gas channel, third gas channel and fourth lane fuel gas on-off；Temperature sensor senses the temperature between cathodic ceramic matrix and anode ceramic matrix.Described device and method continuously change flow field on same battery and carry out battery testing.
Description
Technical field
The present invention relates to battery detecting technical fields, survey more particularly, to the board-like fuel cell that a kind of flow field can be changed
Try device and method.
Background technique
Solid oxide fuel cell (SOFC) can utilize fuel gas (H under the condition of high temperature (600 DEG C -1000 DEG C)2
Or CO+H2) and air, the chemical energy in fuel is converted into electric energy.Fuel cell board-like for soild oxide, it has
Have anode-electrolyte-cathode three-decker, since preparation process is relatively easy, can working current density it is high, good excellent of integration
Point and obtain greatly developing for more companies and colleges and universities both at home and abroad.But along with the outstanding advantage of high power density, inside
The inconsistent problem in flow field, temperature field also highlights.
In order to preferably evaluate the influence of flow field, temperature field to board-like fuel battery performance, about its flow field, temperature field and
The test device of performance needs further to be developed.On the one hand, existing test device generallys use stainless steel and makees battery
Fixture, the oxidation of stainless steel and wherein Cr element are inevitable to the adverse effect of battery performance, and the test fixture service life is short；It is another
Aspect, the different flow field condition in power cell anode-cathode side has conclusive effect to the temperature field of battery, in fair current, adverse current and friendship
Under three kinds of flow fields patterns of distributary obtain battery temperature field very it is necessary to；Simultaneously as anode when operation of fuel cells
Seal request it is high, this becomes difficult the monitoring to battery temperature field.
Summary of the invention
In view of the above problems, the present invention provides a kind of board-like combustion that the flow field for continuously changing flow field on same battery is variable
Expect battery tester and method.
According to an aspect of the present invention, a kind of board-like fuel cell test device that flow field is variable is provided, comprising:
Cathode end plate, including cathodic ceramic matrix and cathodic metal electrode, the interior setting at least one of the cathodic ceramic matrix
First gas passage, the cathodic metal electrode include cathodic metal piece, cathode voltage lead and cathode current leads, described
Cathodic metal piece is arranged between cathodic ceramic matrix and the cathode of battery, the shape between cathodic ceramic matrix and the cathode of battery
At cathode air chamber, air forms the air stream of first direction by first gas passage in cathode air chamber；
Anode end plate, including anode ceramic matrix and anode metal electrodes are provided at least in the anode ceramic matrix
One article of second gas channel, at least one third gas channel and at least one the 4th gas passage, the anode metal electrodes
Including anode metal piece, anode voltage lead and anode current lead, anode metal piece setting in anode ceramic matrix and
Between the anode of battery, so that form anode gas chamber between anode ceramic matrix and the anode of battery, fuel gas passes through the
Two channels, third channel or fourth lane enter anode gas chamber, are respectively formed the combustion of second direction, third direction or fourth direction
Expect air-flow, the second direction is identical as first direction, and the third direction and first direction are vertical, the fourth direction and the
One is contrary；
Gas control unit, for controlling the fuel gas in second gas channel, third gas channel and fourth lane
On-off, so that forming the gas flowfield of different directions between cathodic ceramic matrix and anode ceramic matrix；
Temperature sensor, for sensing the temperature between cathodic ceramic matrix and anode ceramic matrix.
The test device, wherein the first gas passage includes the airport being arranged in cathodic ceramic matrix
Road and the bar shaped air flue for being arranged in cathodic ceramic matrix lower surface, the bar shaped air flue are arranged along first direction, cathodic metal
Plate shape is identical as the shape of the bar shaped air flue, and cathodic metal piece is embedded in bar shaped air flue.
The test device, wherein the lower surface of the cathodic ceramic matrix is provided with metal jack, for being inserted into yin
Pole sheet metal.
The test device, wherein the temperature sensor is thermocouple, is disposed with heat in the cathodic ceramic matrix
Galvanic couple jack, the thermocouple pass through the temperature of thermocouple jack sensing cathode air chamber.
The test device, wherein arrange four fuel gas Vomitories in the anode ceramic matrix, i.e., along the
The first anode blast tube of two directions arrangement and the 4th anode fuel gas channel and the second plate combustion arranged along third direction
Gas channel and third anode blast tube are equipped with square groove on anode ceramic matrix, for placing anode metal piece, the
One anode fuel gas channel to the 4th anode fuel gas channel is provided with one or more gas outlets on the square groove,
In, when first anode blast tube air inlet, the 4th anode fuel gas channel outlet, form second gas channel；Work as second plate
Blast tube air inlet when third anode blast tube outlet, forms third gas channel；When the 4th anode fuel gas channel inlet,
When first anode blast tube outlet, the 4th gas passage is formed.
The test device, wherein the anode metal piece includes nickel sheet and nickel current collection layer, and the square groove includes
First square groove and outer the second square groove for surrounding first party connected in star, the nickel sheet are placed on first square groove
Interior, the nickel current collection layer is placed in second square groove.
The test device, wherein the size of the nickel current collection layer and the second square groove is less than the size of battery.
The test device, wherein further include golden frame, is arranged between battery and nickel current collection layer, difference in height is provided,
Play the role of sealing anode gas chamber while forming anode gas chamber between anode ceramic matrix and galvanic anode.
The test device, wherein the gas control unit include respectively with first anode blast tube to the 4th
The first blast tube to the 4th blast tube, the first blast tube of connection and the third blast tube that anode fuel gas channel is connected to
5th blast tube and the 6th blast tube and controller are provided with fuel gas outlet and the first valve on the 5th blast tube
, fuel gas entrance and the second valve, the connection of the second blast tube and the first blast tube are provided on the 6th blast tube
Place is provided with third valve, and the 4th blast tube and third blast tube connectivity part are provided with the 4th valve, pass through controller control
The direction controlling fuel gas of opening for making the first valve to the 4th valve passes in and out first anode blast tube to the 4th anode fuel gas
Channel.
The test device, wherein be respectively arranged on the cathodic ceramic matrix and anode ceramic matrix and be pierced by yin
The wire jack of pole tension lead and cathode current leads, anode voltage lead and anode current lead, wire jack and lead
Between gap be filled with vitrified bonding.
According to another aspect of the present invention, a kind of board-like fuel cell test device that can be changed using above-mentioned flow field is provided
To the method for board-like fuel cell test, comprising:
Mechanical package and pressurization steps, cathode end plate and anode end plate are installed in heating furnace, and temperature sensor is connected
It is connected to temperature polling instrument, cathode current leads and anode current lead are connected to electronic load and electrochemical workstation, it will be negative
Pole tension lead and anode voltage lead are connected to electrochemical workstation, carry out machine in first gas passage to the 4th gas passage
Tool pressurization；
Following heatings, reduction, activation, performance and resistance are carried out under fair current, cross-current and counter-current gas flow state respectively
Anti- test, temperature field test step, in which:
Under fair current flowing gas state, air flows in the direction that cathode air chamber flows and fuel gas in anode gas chamber
Direction it is identical；Under cross-current flowing gas state, air is in the direction that cathode air chamber flows and fuel gas in anode gas
The direction of room flowing is vertical；Under counter-current gas flow state, air is in the direction that cathode air chamber flows and fuel gas in sun
Pole gas chamber flows contrary；
The performance and testing impedance step include: to be carried out using electrochemical workstation and electronic load using four point poles
Performance and testing impedance；It is discharged by ladder and obtains battery performance；Battery impedance is obtained by AC impedance-frequency sweep method；
Temperature field test step passes through the data of temperature polling instrument monitoring temperature sensor.
The method of the test, wherein after mechanical package pressurization steps further include:
The step of short circuit and air-leakage test, measures the resistance between cathode current leads and anode current lead to detect
It is whether short-circuit；Method or helium leakage probe method detection device air-tightness are kept with pressure.
The method of the test, wherein
The heating step includes by heating furnace according to setting rate heating；
The reduction step includes after heating reaches in setting range, being restored using pure hydrogen condition；
The activation step includes so that battery operation setup time in the case where setting discharge current.
The method of the test, wherein the fair current, cross-current and counter-current gas flow state pass through following step reality
It is existing:
Under open-circuit condition, fuel gas by the second valve enter the first blast tube, by the first blast tube into
Enter first anode blast tube, into anode gas chamber, the 4th blast tube is entered by the 4th anode fuel gas channel, passes through the 4th
Valve enters third blast tube, enters fuel gas outlet discharge by the first valve, forms second direction in anode gas chamber
Fuel gas flow；Air enters cathode air chamber by air channels and bar shaped air flue, forms the air of first direction in cathode air chamber
Stream, first direction is identical with second direction, forms fair current flowing gas state；
Under open-circuit condition, fuel gas enters the first blast tube by the second valve, enters the by third valve
Two blast tubes enter anode gas chamber by second plate blast tube, and it is logical to enter third combustion gas from third anode blast tube
Road, enters fuel gas outlet discharge by the first valve, forms the fuel gas flow of third direction in anode gas chamber；Air passes through sky
Stomata road and bar shaped air flue enter cathode air chamber, form the air stream of first direction, first direction and third party in cathode air chamber
To vertical, formation cross-over gases flow regime；
Under open-circuit condition, fuel gas enters third blast tube by the first valve, enters the by the 4th valve
Four blast tubes enter anode gas chamber by the 4th anode fuel gas channel, logical from first anode blast tube into the first combustion gas
Road, enters fuel gas outlet discharge by the first valve, forms the fuel gas flow of fourth direction in anode gas chamber；Air passes through sky
Stomata road and bar shaped air flue enter cathode air chamber, form the air stream of first direction, first direction and four directions in cathode air chamber
To on the contrary, forming counter-current gas flow state.
Compared with prior art, the present invention has following technical effect that
(1) matrix of cathode and anode end plate is all made of pure alumina ceramic making, long service life, and has been discharged not
Influence of the Cr element to cell testing results in rust steel.
(2) method in board-like fuel battery negative pole side monitoring battery thermal field is proposed.The present invention passes through in cathodic ceramic
Matrix arranges several (9 or more) thermocouples, and thermocouple assay end is directly contacted with cell cathode, and thermal field result is accurate and reliable,
It is fast to the thermal field variation response of battery.
(3) test method for continuously changing flow field on a piece of battery is proposed, ensure that the comparativity of test result.
The present invention can not stopped by the way that four fuel gas Vomitories on anode end plate are connected with fuel gas control unit
Furnace directly switches the flow field direction of inside battery in the case where battery non-exchanging.
Detailed description of the invention
By reference to following specific embodiments and the content of claims and in conjunction with attached drawing, other mesh of the invention
And result will be more apparent and should be readily appreciated that.In the accompanying drawings:
Fig. 1 is the schematic diagram of the variable board-like fuel cell test device in flow field of the present invention；
Fig. 2 is the variable board-like fuel cell test device assembling schematic diagram in flow field of the present invention；
Fig. 3 is cathode end plate stereoscopic schematic diagram of the present invention；
Fig. 4 is the schematic top plan view of cathode end plate of the present invention；
Fig. 5 is anode end plate stereoscopic schematic diagram of the present invention；
Fig. 6 is anode end plate schematic top plan view of the present invention；
Fig. 7 is the schematic diagram of gas control unit of the present invention；
Fig. 8 is flowing gas state schematic diagram under fair current of the present invention, cross-current and counter-current condition.
Wherein, 1- cathode end plate, 11- cathodic ceramic matrix, 111- thermocouple jack, 112- air inlet port, 113- are empty
Gas inlet port, 114- bar shaped air flue, 115- air outlet slit duct, 116- air outlet, 117- sheet metal jack, 12- yin
Pole metal electrode, 121- cathodic metal piece, 122- cathode current leads, 123- cathode voltage lead；2- anode end plate, 21- sun
Pole ceramic matrix, 211- first anode blast tube, 212- second plate blast tube, 213- third anode blast tube,
The 4th anode fuel gas channel 214-, the first square groove of 215-, the second square groove of 216-, 22- anode metal electrodes, 221- sun
Pole sheet metal, 2211- nickel sheet, 2212- nickel current collection layer, 222- anode current lead, 223- anode voltage lead, 23- gold frame；3-
Gas control unit, the first blast tube of 31-, the second blast tube of 32-, 33- third blast tube；The 4th blast tube of 34-；
The 5th blast tube of 35-, the outlet of 351- fuel gas, the first valve of 352-；The 6th blast tube of 36-, 361- fuel gas entrance,
The second valve of 362-, 37- third valve, the 4th valve of 38-；4- thermocouple；5- battery；6- counterweight；7- heating furnace；8- lead is inserted
Hole；9- air inlet line, in the accompanying drawings, identical appended drawing reference indicate similar or corresponding feature or function.
Specific embodiment
In the following description, for purposes of illustration, it in order to provide the comprehensive understanding to one or more embodiments, explains
Many details are stated.It may be evident, however, that these embodiments can also be realized without these specific details.
In other examples, one or more embodiments for ease of description, well known structure and equipment are shown in block form an.
In order to which inside battery flow field, real-time monitoring internal temperature of battery field can be changed in real time, while testing board-like fuel electricity
Pond (abbreviation battery) chemical property, the variable board-like fuel cell test device in flow field of the present invention include cathode end plate,
Anode end plate and temperature sensor, cathode end plate, battery and anode end plate constitute three layer arrangement of upper, middle and lower, cathode end plate and battery
Cathode contacts, anode end plate and galvanic anode contact, have cathode air chamber, in anode tap between cathode end plate and cell cathode
There is cathode air chamber between plate and galvanic anode, the air that one or more leads to cathode air chamber is set in cathode end plate and is led to
One or more fuel gas channel for leading to anode gas chamber is arranged in road on anode end plate, air duct air supply direction not
Change the air supply direction of fuel gas channel in the case where change or changes in the case where fuel gas channel air supply direction is constant
The air supply direction or air duct air supply direction and fuel gas air supply direction in changing air channel change to form variable gas
Body flow field；Temperature sensor can be set in cathode end plate or/and anode end plate towards the one side of battery, be used for sense gasses stream
The variation of the temperature of field, cathode end plate draw cathode current leads and cathode voltage lead, and anode end plate is drawn anode current and drawn
Line and anode voltage lead detect the performance of battery by the electric current and voltage between monitoring cathode and anode.
In order to guarantee the temperature field of battery and the accuracy of performance detection, simplicity, testing cost is reduced, using Fig. 1-figure
The variable board-like fuel cell test device in flow field shown in 8 and method.
Fig. 1 is the schematic diagram of the variable board-like fuel cell test device in flow field of the present invention, and Fig. 2 is of the present invention
The variable board-like fuel cell test device assembling schematic diagram in flow field, as illustrated in fig. 1 and 2, the test device includes:
Cathode end plate 1, including cathodic ceramic matrix 11 and cathodic metal electrode 12, the interior setting of the cathodic ceramic matrix 11
At least one first gas passage, the cathodic metal electrode 12 include cathodic metal piece 121, cathode current leads 122 and yin
Pole tension lead 123, the cathodic metal piece 121 is arranged between cathodic ceramic matrix and the cathode of battery 5, in cathodic ceramic
Cathode air chamber is formed between matrix 1 and the cathode of battery 5, air forms first party by first gas passage in cathode air chamber
To air stream；
Anode end plate 2, including anode ceramic matrix 21 and anode metal electrodes 22 are provided in the anode ceramic matrix
At least one second gas channel, at least one third gas channel and at least one the 4th gas passage, the anode metal
Electrode includes anode metal piece 221, anode current lead 222 and anode voltage lead 223, and the anode metal piece is arranged in sun
Between pole ceramic matrix and the anode of battery, so that forming anode gas chamber between anode ceramic matrix and the anode of battery, fire
Expect that gas by second channel, third channel or fourth lane enters anode gas chamber, be respectively formed second direction, third direction or
The fuel gas stream of fourth direction, the second direction is identical as first direction, and the third direction and first direction are vertical, described
Fourth direction and first direction are opposite；
Gas control unit 3, for controlling the fuel gas in second gas channel, third gas channel and fourth lane
On-off, so that forming the gas flowfield of different directions between cathodic ceramic matrix 11 and anode ceramic matrix 21；
Temperature sensor, for sensing the temperature between cathodic ceramic matrix 11 and anode ceramic matrix 21.
Fig. 3 is cathode end plate stereoscopic schematic diagram of the present invention, and Fig. 4 is the vertical view signal of cathode end plate of the present invention
Figure, as shown in Figures 3 and 4, cathode end plate 1 includes:
Cathodic ceramic matrix 11, is inside disposed with thermocouple jack 111, and temperature sensor is thermocouple 4, the thermocouple
4 pass through the temperature of the thermocouple jack 111 sensing cathode air chamber；It there also is provided air channels in cathodic ceramic matrix, it is empty
Stomata road include air inlet line 9 be connected to air inlet port 112 be connected to air inlet port air intlet duct 113,
Air outlet slit duct 115 and the air outlet 116 being connected to air outlet slit duct, in cathodic ceramic matrix lower surface arrangement
There is bar shaped air flue 114, bar shaped air flue 114 is connected to air intlet duct and air outlet slit duct, and bar shaped air flue 114 is along first direction
Setting；It is provided with multiple wire jacks 8 on cathodic ceramic matrix 11, is pierced by cathode voltage lead 123 respectively and cathode current draws
Line 122；
The shape of cathodic metal piece 121 is identical as the shape of the bar shaped air flue 114, and cathodic metal piece 121 is embedded in item
In shape air flue 114, for example, the lower surface of cathodic ceramic matrix is provided with metal jack 117, for being inserted into cathodic metal piece 121.
Fig. 5 is anode end plate stereoscopic schematic diagram of the present invention, and Fig. 6 is anode end plate schematic top plan view of the present invention,
As it can be seen in figures 5 and 6, anode end plate 2 includes anode ceramic matrix 21 and anode metal electrodes 22, in which:
For arrangement there are four fuel gas Vomitory, i.e., first arranged in a second direction is positive in anode ceramic matrix 21
Pole blast tube 211 and the 4th anode fuel gas channel 214 and second plate blast tube 212 and the along third direction arrangement
Three anode fuel gas channels 213 are equipped with square groove, for placing anode metal piece, the first anode on anode ceramic matrix
Blast tube to the 4th anode fuel gas channel is provided with one or more gas outlets on the square groove, wherein when
One anode fuel gas channel inlet when the 4th anode fuel gas channel outlet, forms second gas channel；When second plate blast tube
Air inlet when third anode blast tube outlet, forms third gas channel；When the 4th anode fuel gas channel inlet, the first anode
When blast tube outlet, the 4th gas passage is formed；
It is provided with multiple wire jacks 8 on anode ceramic matrix 21, is pierced by anode voltage lead 223 and anode current respectively
Lead 222.
Preferably, the anode metal piece 221 includes nickel sheet 2211 and nickel current collection layer 2212, and the square groove includes the
One square groove 215 and outer the second square groove 216 for surrounding first party connected in star, the nickel sheet 2211 are placed on described first
In square groove 215, the nickel current collection layer 2212 is placed in second square groove 216, further, it is preferable that nickel collection
Electric layer 2212 and the size of the second square groove 216 are less than the size of battery.
Furthermore it is preferred that further including golden frame 23, it is arranged between the anode of battery and nickel current collection layer, difference in height is provided,
Play the role of sealing anode gas chamber while forming anode gas chamber between anode ceramic matrix and galvanic anode.
Fig. 7 is the schematic diagram of gas control unit of the present invention, as shown in fig. 7, the gas control unit 3 includes point
The first blast tube to the 4th combustion gas not being connected to first anode blast tube to the 4th anode fuel gas channel (211-214) is logical
Road (31-34), the 5th blast tube 35 and the 6th blast tube 36 for being connected to the first blast tube 31 and third blast tube 33
And controller (not shown), wherein it is provided with fuel gas outlet 351 and first valve 352 on the 5th blast tube 35, the 6th
It is provided with fuel gas entrance 361 and the second valve 362 on blast tube 36, the second blast tube 32 and the first blast tube 31
Connectivity part is provided with third valve 37, and the 4th blast tube 34 and 33 connectivity part of third blast tube are provided with the 4th valve 38,
First anode blast tube is passed in and out extremely by the direction controlling fuel gas of opening that controller controls the first valve to the 4th valve
4th anode fuel gas channel.
Using the variable board-like fuel cell test device in the flow field of the various embodiments described above to board-like fuel cell test
Method includes:
Cathode end plate 1 and anode end plate 2 are installed in heating furnace 7 by mechanical package and pressurization steps, by temperature sensor
(such as thermocouple 4) is connected to temperature polling instrument, and cathode current leads 122 and anode current lead 222 are connected to Electronic Negative
Load and electrochemical workstation, are connected to electrochemical workstation for cathode voltage lead 123 and anode voltage lead 223, first
Gas passage to the 4th gas passage carries out mechanical pressurization, and heating furnace 7 can adjust mechanical pressure by counterweight 6；
Following heatings, reduction, activation, performance and resistance are carried out under fair current, cross-current and counter-current gas flow state respectively
Anti- test, temperature field test step, in which:
Under fair current flowing gas state, air flows in the direction that cathode air chamber flows and fuel gas in anode gas chamber
Direction it is identical；Under cross-current flowing gas state, air is in the direction that cathode air chamber flows and fuel gas in anode gas
The direction of room flowing is vertical；Under counter-current gas flow state, air is in the direction that cathode air chamber flows and fuel gas in sun
Pole gas chamber flows contrary；
The performance and testing impedance step include: to be carried out using electrochemical workstation and electronic load using four point poles
Performance and testing impedance；It is discharged by ladder and obtains battery performance；Battery impedance is obtained by AC impedance-frequency sweep method；
Temperature field test step passes through the data of temperature polling instrument monitoring temperature sensor.
Preferably, after mechanical package pressurization steps further include:
The step of short circuit and air-leakage test, measures the resistance between cathode current leads and anode current lead to detect
It is whether short-circuit；Method or helium leakage probe method detection device air-tightness are kept with pressure.
In one embodiment of the invention, the heating step includes by heating furnace according to setting rate heating；Institute
Stating reduction step includes after heating reaches in setting range, being restored using pure hydrogen condition；The activation step includes so that battery
The operation setup time in the case where setting discharge current.
In one embodiment of the invention, the fair current, cross-current and counter-current gas flow state pass through following step
It realizes:
Under open-circuit condition, fuel gas enters the first blast tube 31 by the second valve 362, logical by the first combustion gas
Road enters first anode blast tube 211, and into anode gas chamber, it is logical to enter the 4th combustion gas by the 4th anode fuel gas channel 214
Road 34 enters third blast tube 33 by the 4th valve 38, enters 351 discharge of fuel gas outlet by the first valve 352,
The fuel gas flow of anode gas chamber formation second direction；Air enters cathode air chamber by air channels and bar shaped air flue, in cathode
Gas chamber forms the air stream of first direction, and first direction is identical with second direction, forms fair current flowing gas state；
Under open-circuit condition, fuel gas enters the first blast tube 31 by the second valve 362, passes through third valve 37
Into the second blast tube 32, anode gas chamber is entered by second plate blast tube 212, from third anode blast tube 213
Into third blast tube 33,351 discharge of fuel gas outlet is entered by the first valve 352, forms third party in anode gas chamber
To fuel gas flow；Air enters cathode air chamber by air channels and bar shaped air flue, forms first direction in cathode air chamber
Air stream, first direction and third direction are vertical, form cross-over gases flow regime；
Under open-circuit condition, fuel gas enters third blast tube 33 by the first valve 362, passes through the 4th valve 38
Into the 4th blast tube 34, anode gas chamber is entered by the 4th anode fuel gas channel 214, from first anode blast tube 211
Into the first blast tube 31,351 discharge of fuel gas outlet is entered by the first valve 352, forms four directions in anode gas chamber
To fuel gas flow；Air enters cathode air chamber by air channels and bar shaped air flue, forms first direction in cathode air chamber
Air stream, first direction and fourth direction are on the contrary, form counter-current gas flow state.
In one particular embodiment of the present invention, the variable board-like fuel cell test device in flow field includes:
Cathode end plate 1, the cuboid being square on the whole for bottom surface.In cuboid bottom surface, two diagonal angles is respectively disposed with
Air inlet port 112 and air into outlet 116, be disposed with inside cathode end plate air channels, duct one end and air into
Outlet is disposed with bar shaped air flue several in the bottom surface of cathode end plate.Meanwhile in cathode end plate bottom surface, it is coated with certain
The square waveform goldleaf of thickness is exactly matched as cathodic metal piece 121, cathodic metal piece 121 and bar shaped air flue 114, is square wave
Shape can directly be contacted with cell cathode.The two sides of cathodic metal piece 121 are drawn from two metal sheets jack 117 inside cathode end plate,
It is connected 123 with external cathode current feed 122 and cathode voltage lead.In addition, being evenly arranged thermoelectricity inside cathode end plate
Double jacks 111, through bottom surface in cathode end plate, to arrange thermocouple 4, thermocouple test side and cathode end plate bottom goldleaf
It directly contacts, wherein thermocouple jack 111 is through-hole, and quantity is n × n, and n is the positive integer more than or equal to 3, and uses n
× n is equally spaced.
Anode end plate 2, the cuboid being square on the whole for bottom surface.Cuboid bottom surface four, diagonal angle is disposed with four
A fuel gas Vomitory, each fuel gas Vomitory have two outlets to be located on the second square groove 216, the second square groove
216 centroids are overlapped with anode end plate centroid, 216 drop 1mm of the first square groove 215 and the second square groove, and centroid is overlapped.
It is evenly arranged 4 wire jacks 8 inside the first square groove 215, runs through two square surface of anode end plate.Meanwhile
Nickel sheet 2211 is disposed at one square groove 215, nickel sheet top is concordant with 216 bottom of the second square groove, and nickel sheet can be with battery
Anode directly contacts.2211 bottom of nickel sheet is connected with 4 anode current leads 222.Anode current lead 222 is from anode end plate bottom
It draws in face.Wherein an anode voltage lead 223 is connected on a gold thread.
Wherein, the sealing element using 0.2mm gold frame 23 as anode, sealing effect is good, convenient disassembly.Utilize golden ductility
Good feature is processed flakiness gold frame, then is pressed and sealed with the mode of mechanical pressurization.After being completed can pressure release directly by battery
It removes.
In addition, gap is filled with ceramic bonding agent between wire jack 8 and lead, guarantee that gas will not pass through from gap.
Preferably, thermocouple uses K-type, precision ± 0.1 DEG C, monitoring time step-length 60-120s.
In one particular embodiment of the present invention, the variable board-like fuel cell test method in flow field successively includes: machine
Tool assembling and pressurization, air-tightness and short-circuit detecting, heating, reduction, activation, performance and testing impedance expand test, stability survey
10 examination, cooling and disassembly links, specifically:
(1) mechanical package and pressurization: mechanical package includes three layer arrangements of cathode end plate, battery, anode end plate, and battery is close
Envelope, electric current is connected with the extraction of voltage lead, gas piping and mechanical pressurization；Wherein moulding pressure 20kPa-100kPa is advisable.
(2) short circuit and air-leakage test: the resistance between cathode and anode current leading point is measured to detect whether short circuit；
Method or helium leakage probe method detection device air-tightness are kept with pressure.
(3) it heats up: 750 DEG C -850 DEG C of target temperature, 1-2 DEG C of heating rate/min.
(4) it restores: 750 DEG C -850 DEG C of reduction temperature, pure hydrogen condition reduction；Battery open circuit voltage (OCV) stablizes 2h or more
It is complete to be considered as reduction.
(5) activate: battery is in 0.05A/cm2It works for 24 hours under discharge current.
(6) performance and testing impedance: using electrochemical workstation and electronic load, carries out performance and impedance using four point poles
Test；Battery performance is discharged by ladder to be obtained, discharge voltage range 0.3V-OCV；Battery impedance passes through AC impedance-frequency
Scanning method obtains, frequency range 10mHz-100kHz.
(7) temperature field test:
Step 1: under open-circuit condition, such as A in Fig. 8) connection type shown in fair current, electric thermo-couple temperature is monitored, it is steady to it
Temperature field data are recorded after fixed, and carry out performance and testing impedance；
Step 2: under open-circuit condition, B in Fig. 8) connection type shown in cross-current, electric thermo-couple temperature is monitored, it is steady to it
Temperature field data are recorded after fixed, and carry out performance and testing impedance；
Step 3: under open-circuit condition, such as C in Fig. 8) connection type shown in adverse current, electric thermo-couple temperature is monitored, it is steady to it
Temperature field data are recorded after fixed, and carry out performance and testing impedance.
(8) stability test: durability test of the battery under steady temperature constant discharge current.750 DEG C of temperature range-
850 DEG C, current range 0.05-0.5A/cm2。
(9) cool down: target temperature < 200 DEG C, 1-2 DEG C of rate of temperature fall/min.
(10) it dismantles: after test device is cooled to room temperature, cutting gas supply, removal mechanical pressure, separation cathode end plate,
Battery and anode end plate.
In the above embodiments, voltage lead and current feed use proof gold or pure alloy platinum material.
In conclusion the present invention devises one kind board-like fuel battery temperature field full-featured, with long service life and property
Can test device, while provide it is a set of can be with the test method in temperature field and performance under real-time characterization difference flow field.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, rather than be used to describe a particular order or precedence order.
Although content disclosed above shows exemplary embodiment of the present invention, it should be noted that without departing substantially from power
Under the premise of benefit requires the range limited, it may be many modifications and modify.According to the side of inventive embodiments described herein
Function, step and/or the movement of method claim are not required to the execution of any particular order.In addition, although element of the invention can
It is unless explicitly limited individual element it is also contemplated that having multiple elements to be described or be required in the form of individual.
Claims (10)
1. a kind of variable board-like fuel cell test device in flow field characterized by comprising
Cathode end plate, including cathodic ceramic matrix and cathodic metal electrode, setting at least one the in the cathodic ceramic matrix
One gas passage, the cathodic metal electrode include cathodic metal piece, cathode voltage lead and cathode current leads, the cathode
Sheet metal is arranged between cathodic ceramic matrix and the cathode of battery, and yin is formed between cathodic ceramic matrix and the cathode of battery
Pole gas chamber, air form the air stream of first direction by first gas passage in cathode air chamber；
Anode end plate, including anode ceramic matrix and anode metal electrodes are provided at least one in the anode ceramic matrix
Second gas channel, at least one third gas channel and at least one the 4th gas passage, the anode metal electrodes include
Anode metal piece, anode voltage lead and anode current lead, the anode metal piece are arranged in anode ceramic matrix and battery
Anode between so that form anode gas chamber between anode ceramic matrix and the anode of battery, fuel gas is logical by second
Road, third channel or fourth lane enter anode gas chamber, are respectively formed the fuel gas of second direction, third direction or fourth direction
Stream, the second direction is identical as first direction, and the third direction and first direction are vertical, the fourth direction and first party
To opposite；
Gas control unit, the on-off of the fuel gas for controlling second gas channel, third gas channel and fourth lane,
So that forming the gas flowfield of different directions between cathodic ceramic matrix and anode ceramic matrix；
Temperature sensor, for sensing the temperature between cathodic ceramic matrix and anode ceramic matrix.
2. test device according to claim 1, which is characterized in that the first gas passage includes being arranged in cathode pottery
Air channels in porcelain basal body and the bar shaped air flue for being arranged in cathodic ceramic matrix lower surface, the bar shaped air flue is along first party
To setting, cathodic metal plate shape is identical as the shape of the bar shaped air flue, and cathodic metal piece is embedded in bar shaped air flue.
3. test device according to claim 1, which is characterized in that the temperature sensor is thermocouple, the cathode
Thermocouple jack is disposed in ceramic matrix, the thermocouple passes through the temperature of thermocouple jack sensing cathode air chamber.
4. test device according to claim 1, which is characterized in that arrange four fuel gas in the anode ceramic matrix
Body Vomitory, i.e., the first anode blast tube and the 4th anode fuel gas channel arranged in a second direction and along third direction
The second plate blast tube and third anode blast tube of arrangement are equipped with square groove on anode ceramic matrix, are used for
Anode metal piece is placed, first anode blast tube to the 4th anode fuel gas channel is provided with one or more gas outlets in institute
It states on square groove, wherein when first anode blast tube air inlet, the 4th anode fuel gas channel outlet, form second gas
Channel；When second plate blast tube air inlet, third anode blast tube outlet, third gas channel is formed；When the 4th sun
Pole blast tube air inlet when first anode blast tube outlet, forms the 4th gas passage.
5. test device according to claim 4, which is characterized in that the anode metal piece includes nickel sheet and nickel current collection
Layer, the square groove include the first square groove and outer the second square groove for surrounding first party connected in star, and the nickel sheet is put
It sets in first square groove, the nickel current collection layer is placed in second square groove.
6. test device according to claim 4, which is characterized in that the gas control unit includes positive with first respectively
Pole blast tube to the first blast tube that the 4th anode fuel gas channel is connected to the 4th blast tube, connection the first blast tube
With the 5th blast tube of third blast tube and the 6th blast tube and controller, fuel is provided on the 5th blast tube
Gas exports and the first valve, is provided with fuel gas entrance and the second valve, the second blast tube and first on the 6th blast tube
The connectivity part of blast tube is provided with third valve, and the 4th blast tube and third blast tube connectivity part are provided with the 4th valve
Door passes in and out first anode blast tube by the direction controlling fuel gas of opening that controller controls the first valve to the 4th valve
To the 4th anode fuel gas channel.
7. test device according to claim 1, which is characterized in that on the cathodic ceramic matrix and anode ceramic matrix
Be respectively arranged be pierced by cathode voltage lead and cathode current leads, anode voltage lead and anode current lead lead insert
Hole, the gap between wire jack and lead are filled with vitrified bonding.
8. a kind of board-like fuel cell test device that can be changed using flow field described in claim 1 is to board-like fuel cell test
Method characterized by comprising
Mechanical package and pressurization steps, cathode end plate and anode end plate are installed in heating furnace, and temperature sensor is connected to
Cathode current leads and anode current lead are connected to electronic load and electrochemical workstation by temperature polling instrument, by cathode electricity
Voltage lead wires and anode voltage lead are connected to electrochemical workstation, carry out mechanical add in first gas passage to the 4th gas passage
Pressure；
Following heatings, reduction, activation, performance and impedance are carried out under fair current, cross-current and counter-current gas flow state respectively to survey
Examination, temperature field test step, in which:
Under fair current flowing gas state, air is in the direction that cathode air chamber flows and fuel gas in the side that anode gas chamber flows
To identical；Under cross-current flowing gas state, air is in the direction that cathode air chamber flows and fuel gas in anode gas chamber stream
Dynamic direction is vertical；Under counter-current gas flow state, air is in the direction that cathode air chamber flows and fuel gas in anode gas
It flows contrary room；
The performance and testing impedance step include: to carry out performance using four point poles using electrochemical workstation and electronic load
And testing impedance；It is discharged by ladder and obtains battery performance；Battery impedance is obtained by AC impedance-frequency sweep method；
Temperature field test step passes through the data of temperature polling instrument monitoring temperature sensor.
9. the method tested according to claim 8, which is characterized in that
The heating step includes by heating furnace according to setting rate heating；
The reduction step includes after heating reaches in setting range, being restored using pure hydrogen condition；
The activation step includes so that battery operation setup time in the case where setting discharge current.
10. the method tested according to claim 8, which is characterized in that
The fair current, cross-current and counter-current gas flow state are realized by following step:
Under open-circuit condition, fuel gas enters the first blast tube by the second valve, enters the by the first blast tube
One anode fuel gas channel enters the 4th blast tube by the 4th anode fuel gas channel, passes through the 4th valve into anode gas chamber
Into third blast tube, fuel gas outlet discharge is entered by the first valve, forms the combustion gas of second direction in anode gas chamber
Air-flow；Air enters cathode air chamber by air channels and bar shaped air flue, forms the air stream of first direction in cathode air chamber, the
One direction is identical with second direction, forms fair current flowing gas state；
Under open-circuit condition, fuel gas enters the first blast tube by the second valve, enters the second combustion by third valve
Gas channel, enters anode gas chamber by second plate blast tube, enters third blast tube from third anode blast tube, leads to
It crosses the first valve and enters fuel gas outlet discharge, form the fuel gas flow of third direction in anode gas chamber；Air passes through airport
Road and bar shaped air flue enter cathode air chamber, form the air stream of first direction in cathode air chamber, first direction and third direction hang down
Directly, cross-over gases flow regime is formed；
Under open-circuit condition, fuel gas enters third blast tube by the first valve, enters the 4th combustion by the 4th valve
Gas channel enters anode gas chamber by the 4th anode fuel gas channel, enters the first blast tube from first anode blast tube, leads to
It crosses the first valve and enters fuel gas outlet discharge, form the fuel gas flow of fourth direction in anode gas chamber；Air passes through airport
Road and bar shaped air flue enter cathode air chamber, form the air stream of first direction, first direction and fourth direction phase in cathode air chamber
Instead, counter-current gas flow state is formed.
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| CN112259765A (en) * | 2019-07-06 | 2021-01-22 | 中国科学院宁波材料技术与工程研究所 | Electric signal collection method based on solid oxide fuel cell electric core with symmetrical double-cathode structure |
| CN116295621A (en) * | 2023-02-21 | 2023-06-23 | 华北电力大学 | Optical fiber type SOFC multi-physical-field testing device and application method thereof |
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