CN107543942A - The test fixture and method of testing of membrane electrode - Google Patents
The test fixture and method of testing of membrane electrode Download PDFInfo
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- CN107543942A CN107543942A CN201710714139.6A CN201710714139A CN107543942A CN 107543942 A CN107543942 A CN 107543942A CN 201710714139 A CN201710714139 A CN 201710714139A CN 107543942 A CN107543942 A CN 107543942A
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- monocell
- negative pole
- pole plate
- gas
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 239000012528 membrane Substances 0.000 title claims abstract description 44
- 238000010998 test method Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 45
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Fuel Cell (AREA)
Abstract
The invention provides a kind of test fixture of membrane electrode, including the positive and negative pole plate being oppositely arranged, the corresponding surface of the positive and negative pole plate are provided with a gas flowfield；Air admission hole, venthole and power interface are equipped with the side of the positive and negative pole plate；The air admission hole and the venthole are connected with the flow field；And the attachment structure of the fixed positive and negative pole plate.Present invention also offers a kind of method of testing of membrane electrode.Convenient disassembly of the present invention, and the resistance value of the positive and negative pole plate of stainless steel material is smaller, and the test error of membrane electrode can also be reduced.
Description
Technical field
The present invention relates to the performance test field of fuel cell, the test fixture of more particularly to a kind of membrane electrode and test
Method.
Background technology
As a kind of new clean type TRT, Proton Exchange Membrane Fuel Cells (PEMFC) can will be stored in combustion
Chemical energy in material, which is directly translated into electric energy and produces and live for people, to be used, and possess high energy efficiency, start fast, zero-emission,
Low noise, can long lasting for work the features such as.PEMFC is assembled by one group of cells in series, just can obtain required output
Power.In energy resources scarcity, frequently today, this kind of environmentally friendly new energy of fuel cell obtain people to environmental problem
Extensive concern.Wherein, the test to the membrane electrode of fuel cell is particularly important.The test fixture of traditional membrane electrode with
And method of testing possesses substantially similar structure, mainly it is made up of end plate, collector plate and bipolar plates, in the process of installation membrane electrode
In need that bipolar plates and collector plate are arranged between two end plates successively；Dismounting is complicated, further, since multilayer material overlapping is led
Contact area increase is caused, while also increases the contact resistance of test fixture, increases the error of test result.
The content of the invention
In order to solve the technical problem, the invention provides a kind of test fixture of membrane electrode and method of testing, it is used for
Solves the problems such as test fixture of membrane electrode in the prior art and method of testing dismounting are complicated, test result error is big.
In order to solve the above problems, the invention provides a kind of test fixture of membrane electrode, including：Be oppositely arranged just,
Negative plate, the corresponding surface of the positive and negative pole plate are provided with a gas flowfield；It is equipped with the side of the positive and negative pole plate
Air admission hole, venthole and power interface；The air admission hole and the venthole are connected with the gas flowfield；It is and fixed
The attachment structure of the positive and negative pole plate.
The present invention is formed by being fixed by two pieces of positive and negative pole plates, and fusion end plate, collector plate, bipolar plates are integrated, just,
The relative surface of negative plate be provided with installation gas flowfield, and on the side of positive and negative pole plate set air admission hole, venthole and
Power interface, air admission hole and venthole connect with gas flowfield, and air and hydrogen enter gas flowfield by air admission hole
Learn change and produce electric energy, clamp structure is simple, convenient disassembly, and the simple structure of the present invention reduces the electricity of test fixture
Resistance, reduces the influence to the test result of membrane electrode.
Further improvement of the present invention is that the positive and negative pole plate is provided with the multiple through holes being mutually communicated, and passes through bolt
Nut the positive and negative pole plate is fixed to form the attachment structure.
Further improvement of the present invention is that the air admission hole and the gas outlet are located on the positive and negative pole plate side,
The central shaft of the central shaft of the power interface and the air admission hole and the gas outlet is perpendicular.
Present invention also offers a kind of method of testing of membrane electrode, comprise the following steps：
S11：The test fixture of one membrane electrode as claimed in claim 1 is provided, and measures the electricity of the positive and negative pole plate
Resistance；S12：Sealing gasket, membrane electrode, gas inlet and outlet joint and electrode contact are provided, assembling forms monocell；S13：Leakage is provided
Gas measurement apparatus, the air-tightness of the monocell is tested to ensure security；S14：Proton Exchange Membrane Fuel Cells test is provided
Monocell described in system connectivity, measure the open-circuit voltage of the monocell.
Further improvement of the present invention is that the resistance for measuring the positive and negative pole plate uses formula (1)
Wherein, ρ represents resistivity, and L is the length of the positive and negative pole plate, and S represents surface area.
The step of further improvement of the present invention is, assembles monocell comprises the following steps：S121：By the sealing gasket
It is covered on the gas flowfield；S122：The membrane electrode is folded in the sealing gasket, using bolt and nut by described in
Positive and negative pole plate fastening；S123：The gas inlet and outlet joint is installed at the air admission hole and venthole, by the electrode
Joint is installed at the power interface.
Further improvement of the present invention is, there is provided a torsiometer, the torsion of each bolt and nut is arranged into equivalent.
Further improvement of the present invention is that the air leakage measuring apparatus includes air compressor machine and copper plate quantifier, tests institute
The air-tightness for stating monocell comprises the following steps：
S131：The copper plate quantifier is installed at the air admission hole and the venthole；
S132：The air compressor machine is opened, setting gas flow is passed through in the monocell；
S133：The copper plate quantifier measures the gas flow values at the gas port and the venthole, according to formula
(2) leak rate of the monocell is calculated.
Further improvement of the present invention is that the open-circuit voltage for measuring the monocell comprises the following steps：
S141：The gas inlet and outlet of the Proton Exchange Membrane Fuel Cells test system is correspondingly connected to the gas of monocell
Inlet-outlet connector, and set test temperature；
S142：Nitrogen is passed through in toward monocell to empty the air in the monocell；
S143：There is provided air compressor machine, toward monocell in each lead into air；
S144：Universal meter is provided, measures the open-circuit voltage at the monocell both ends, and close air compressor machine.
Further improvement of the present invention is that hydrogen is passed through the air admission hole on the negative plate, and air is passed through the positive pole
Air admission hole on plate.
The present invention is compared to the beneficial effect of prior art：By by the end plate of original technology, collector plate, bipolar plates
It is fused into one, forms positive and negative pole plate, convenient disassembly, and the resistance value of positive and negative pole plate is smaller, and the test to membrane electrode misses
Difference can also reduce.
Brief description of the drawings
Fig. 1 is the schematic diagram of the test fixture of the membrane electrode of the present invention；
Fig. 2 is the schematic diagram of the monocell of the present invention.
Reference
1st, positive and negative electrode plate；11st, gas flowfield；12nd, air admission hole；13rd, through hole；14th, power interface；15th, venthole；21、
Bolt；22nd, nut；4th, sealing gasket, 5, membrane electrode；6th, gas inlet and outlet joint；7th, electrode contact.
Embodiment
Below in conjunction with accompanying drawing, the technical characteristic above-mentioned and other to the present invention and advantage are clearly and completely described,
Obviously, described embodiment is only the section Example of the present invention, rather than whole embodiments.
The invention provides a kind of test fixture of membrane electrode and method of testing.Conventional test fixture is end plate, collection
Flowing plate, bipolar plates are superimposed to be formed, and dismounting is complicated, and also increases the contact resistance of test fixture, increases the survey of membrane electrode
Try error.The present invention passes through the positive and negative pole plate for being fused into one end plate, collector plate, bipolar plates, convenient disassembly, and resistance
Value is smaller, reduces the error to membrane electrode test.Test fixture to membrane electrode of the invention and test side below in conjunction with the accompanying drawings
Method illustrates.
Refering to Fig. 1,2, the present invention is a kind of test fixture of membrane electrode, including：Positive and negative pole plate 1 and attachment structure.Its
In, positive plate and negative plate are oppositely arranged, and installation gas flowfield 11 is provided with the corresponding surface of positive and negative pole plate,
Air admission hole 12, venthole 15 and power interface 14 are equipped with the side of positive and negative pole plate.Air admission hole 12 and venthole 15 to
The inside of positive and negative pole plate extends to be connected with gas flowfield 11.Positive and negative pole plate 1 is fixedly connected by attachment structure.Membrane electrode leads to
A series of components are crossed to be folded in the test fixture.
The material selection stainless steel material of positive/negative plate, stainless steel material have excellent electrical and thermal conductivity, good machine
The advantages that tool performance, preferable air-tightness, cheap easy to process and cost.And the structures shape reactant and product in flow field
Flow regime in flow field, particularly with the Proton Exchange Membrane Fuel Cells of large area, flow field structure can directly affect battery
Performance.The two sides of positive/negative plate is respectively equipped with the conversion zone of air and hydrogen.Flow Field Design is required to uniformly distribute
Fuel and oxidant needed for battery discharge, ensure that electric current distribution is uniform, avoid hot-spot, the water that can generate reaction
The reacting gas entrainment smoothly discharge flowed.Flow field widely used at present is based on rectangle channel and serpentine flow；
The former can flow through the linear velocity of flow-field channel reaction gas than the length with parallel groove with the width of ditch and ridge is changed to change, will
Aqueous water discharges battery, the latter by change the width of ditch and ridge than, passage number and snakelike groove total length it is anti-to adjust
Should gas linear rate of flow in flow field, it is ensured that aqueous water is discharged into battery.It is reported that snakelike and rectangle channel groove width
The control of the ratio between width of degree and ridge is 1:Between (1.2-2.0).The width of usual groove is about 1mm, and the width of ridge should be in 1-2mm
Between；The depth of groove should be determined by groove total length and overall presure drop of the reaction gas flow through flow field allowed, should typically be controlled
Between 0.5-1.0mm.
The multiple through holes 13 for penetrating positive and negative pole plate 1 are provided with positive and negative pole plate 1, attachment structure is bolt 21 and nut 22
Positive and negative pole plate 1, is connected by connection through through hole 13.Air admission hole 12 and venthole 15 on positive and negative pole plate 1 be arranged on just,
On side on the opposite side of negative plate 1, in order to which the hydrogen ion after reduction is delivered at electrode, the central shaft of power interface 14 is with entering
The axis perpendicular of stomata 12 and venthole 15.
The present invention also describes a kind of method of testing of membrane electrode, comprises the following steps：
(1) first, there is provided a measured material as described above, the size of the fixture is measured, then according to formula (1)
Calculate the resistance value R of the measured material.
Wherein, ρ represents resistivity, and L is the length of positive and negative pole plate, and S represents surface area.
(2) flow field 3, sealing gasket 4, membrane electrode 5, gas inlet and outlet joint 6 and electrode contact 7 are provided, assembling forms single
Battery, comprise the following steps：
(a) sealing gasket 4 is respectively mounted on the gas flowfield 11 on positive and negative pole plate 1；
(b) membrane electrode is clipped in the sealing gasket 4 of positive and negative pole plate 1, then consolidated positive and negative pole plate 1 with bolt and nut
Surely tighten, during being somebody's turn to do, use torsiometer so that the torsion of each bolt and nut is arranged to equivalent.
(c) finally gas inlet and outlet joint 6 is arranged at air admission hole 12 and venthole 15, electrode contact 7 is arranged on electricity
At source interface 14.
Wherein, gas flowfield includes mesh flow field and serpentine flow, and the present invention is preferably serpentine flow.
(3) then in order to ensure the security in measurement process, air-tightness of the air leakage measuring apparatus to monocell need to be utilized
Measure.And air leakage measuring apparatus includes air compressor machine and copper plate quantifier, comprise the following steps that：
Copper plate quantifier is installed on at body opening 12 and venthole 15, after all inlet and outlet all connect, opened empty
Press, gas flow is set respectively and is passed through monocell, treat that each flow is recorded after each copper plate meter readings are basicly stable to be counted
According to going out device leak rate further according to inlet and outlet flowmeter mathematic interpolation, calculation formula is such as shown in (2).
(4) finally, the monocell is connected using Proton Exchange Membrane Fuel Cells test system, and is measured with universal meter
The open-circuit voltage of monocell, to obtain the performance of membrane electrode 5.Step is as follows：
Successively by the monocell gas inlet and outlet assembled and Proton Exchange Membrane Fuel Cells test system gas inlet and outlet
Connection, and test system is set into humidification temperature；Open nitrogen valve and be passed through nitrogen, start simultaneously at timing, duration of ventilation 10 divides
Clock, nitrogen valve is closed after ventilation terminates；Open air compressor machine valve and be passed through air toward the air admission hole on positive plate, then open
Hydrogen gas cylinder is passed through hydrogen towards the air admission hole on negative plate, sets the flow proportional of hydrogen and air, opens test system control
Hydrogen switch in panel；Using universal meter test monocell both ends open-circuit voltage, the record data after open-circuit voltage is stable；Test
Hydrogen and air switch in first shutdown test system control panel after end, it is by hydrogen and electronic air valve flow set successively
0, hydrogen bottle valve and air compressor machine valve are closed, pulls down monocell.
The present invention is formed by being fixed by two pieces of positive and negative pole plates, and fusion end plate, collector plate, bipolar plates are integrated, just,
The relative surface of negative plate is provided with gas flowfield, and air admission hole, venthole and power supply are set on the side of positive and negative pole plate
Interface, air admission hole and venthole connect with gas flowfield, and air and hydrogen enter gas flowfield by air admission hole and chemistry change occurs
Change and produce electric energy, clamp structure is simple, convenient disassembly, and the simple structure of the present invention reduces the resistance of test fixture, subtracts
The influence of the small test result to membrane electrode.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, it will be appreciated that the foregoing is only the specific embodiment of the present invention, the protection being not intended to limit the present invention
Scope.Particularly point out, to those skilled in the art, within the spirit and principles of the invention, that is done any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. test fixture of membrane electrode, it is characterised in that including：The positive and negative pole plate being oppositely arranged, the corresponding surface of the positive and negative pole plate are provided with a gas flowfield；The positive and negative electrode Air admission hole, venthole and power interface are equipped with the side of plate；The air admission hole and the venthole and the gas stream Field is connected；And the attachment structure of the fixed positive and negative pole plate.
- 2. test fixture according to claim 1, it is characterised in that the positive and negative pole plate is more provided with being mutually communicated Individual through hole, the positive and negative pole plate is fixed to form the attachment structure by bolt and nut.
- 3. test fixture according to claim 1, it is characterised in that the air admission hole and the gas outlet are located at described On positive and negative pole plate side, the central shaft of the central shaft of the power interface and the air admission hole and the gas outlet is perpendicular.
- 4. a kind of method of testing of membrane electrode, it is characterised in that comprise the following steps：S11：The test fixture of one membrane electrode as claimed in claim 1 is provided, and measures the resistance of the positive and negative pole plate；S12：Sealing gasket, membrane electrode, gas inlet and outlet joint and electrode contact are provided, assembling forms monocell；S13：Air leakage measuring apparatus is provided, tests the air-tightness of the monocell to ensure security；S14：Proton Exchange Membrane Fuel Cells test system is provided and connects the monocell, measures the open circuit electricity of the monocell Pressure.
- 5. method of testing according to claim 4, it is characterised in that the resistance of the measurement positive and negative pole plate uses formula (1)<mrow> <mi>&rho;</mi> <mo>=</mo> <mfrac> <mrow> <mi>R</mi> <mi>S</mi> </mrow> <mi>L</mi> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>Wherein, ρ represents resistivity, and L is the length of the positive and negative pole plate, and S represents surface area.
- 6. method of testing according to claim 4, it is characterised in that the step of assembling monocell comprises the following steps：S121：The sealing gasket is covered on the gas flowfield；S122：The membrane electrode is folded in the sealing gasket, fastened the positive and negative pole plate using bolt and nut；S123：The gas inlet and outlet joint is installed at the air admission hole and venthole, the electrode contact is installed on At the power interface.
- 7. method of testing according to claim 6 a, it is characterised in that torsiometer is provided, by the torsion of each bolt and nut Power is arranged to equivalent.
- 8. method of testing according to claim 4, it is characterised in that the air leakage measuring apparatus includes air compressor machine and copper plate Quantifier, the air-tightness for testing the monocell comprise the following steps：S131：The copper plate quantifier is installed at the air admission hole and the venthole；S132：The air compressor machine is opened, setting gas flow is passed through in the monocell；S133：The copper plate quantifier measures the gas flow values at the gas port and the venthole, is counted according to formula (2) Calculate the leak rate of the monocell.
- 9. method of testing according to claim 4, it is characterised in that measure the open-circuit voltage of the monocell including following Step：S141：The gas that the gas inlet and outlet of the Proton Exchange Membrane Fuel Cells test system is correspondingly connected to monocell passes in and out Mouth joint, and set test temperature；S142：Nitrogen is passed through in toward monocell to empty the air in the monocell；S143：The hydrogen and air of setting flow proportional are passed through in monocell, is provided respectively by hydrogen gas cylinder and for air compressor machine；S144：Universal meter is provided, measures the open-circuit voltage at the monocell both ends, and close air compressor machine.
- 10. method of testing according to claim 9, it is characterised in that hydrogen is passed through the air admission hole on the negative plate, empty Gas is passed through the air admission hole on the positive plate.
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| CN201710714139.6A CN107543942B (en) | 2017-08-18 | 2017-08-18 | Test fixture and test method for membrane electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714139.6A CN107543942B (en) | 2017-08-18 | 2017-08-18 | Test fixture and test method for membrane electrode |
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| CN107543942B CN107543942B (en) | 2024-04-12 |
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