CN207557294U - The test fixture of membrane electrode - Google Patents
The test fixture of membrane electrode Download PDFInfo
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- CN207557294U CN207557294U CN201721038956.6U CN201721038956U CN207557294U CN 207557294 U CN207557294 U CN 207557294U CN 201721038956 U CN201721038956 U CN 201721038956U CN 207557294 U CN207557294 U CN 207557294U
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- pole plate
- negative pole
- membrane electrode
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 239000012528 membrane Substances 0.000 title claims abstract description 37
- 238000010998 test method Methods 0.000 abstract description 9
- 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
- 239000007789 gas Substances 0.000 description 32
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 11
- 239000000446 fuel Substances 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000012495 reaction gas Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 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
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Fuel Cell (AREA)
Abstract
The utility model provides a kind of test fixture of membrane electrode, and including the positive and negative pole plate being oppositely arranged, the positive and negative corresponding surface of pole plate is equipped with a gas flowfield；Air admission hole, venthole and power interface are equipped on the side of the positive and negative pole plate；The air admission hole and the venthole are connected with the flow field；And the connection structure of the fixed positive and negative pole plate.The utility model additionally provides a kind of test method of membrane electrode.The utility model is convenient for disassembly and assembly, 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 utility model is related 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 novel clean type power generator, 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.Energy resources are deficient, environmental problem frequent today, this kind of environmentally friendly new energy of fuel cell obtains people
Extensive concern.Wherein, the test of the membrane electrode of fuel cell is particularly important.The test fixture of traditional membrane electrode with
And test method possesses substantially similar structure, is mainly made of end plate, collector plate and bipolar plates, in the process of installation membrane electrode
In need that bipolar plates and collector plate are mounted between two end plates successively；Dismounting is complicated, in addition, 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.
Utility model content
In order to solve the technical problem, the utility model provides the test fixture and test method of a kind of membrane electrode,
For solving the problems such as test fixture of membrane electrode in the prior art and test method dismounting are complicated, test result error is big.
To solve the above-mentioned problems, the utility model provides a kind of test fixture of membrane electrode, including：It is oppositely arranged
Positive and negative pole plate, the positive and negative corresponding surface of pole plate are equipped with a gas flowfield；It is all provided on the side of the positive and negative pole plate
There are air admission hole, venthole and power interface；The air admission hole and the venthole are connected with the gas flowfield；It is and solid
The connection structure of the fixed positive and negative pole plate.
By being made of two pieces of positive and negative pole plate fixations, fusion end plate, collector plate, bipolar plates are integrated the utility model,
The opposite surface of positive and negative pole plate is equipped with installation gas flowfield, and air admission hole, venthole are set on the side of positive and negative pole plate
And power interface, air admission hole and venthole are connected with gas flowfield, air and hydrogen enter gas flowfield by air admission hole and send out
Biochemical variation produces electricl energy, and clamp structure is simple, convenient for disassembly and assembly, and the simple structure of the utility model reduces test clip
The resistance of tool reduces the influence to the test result of membrane electrode.
Further improvement of the utility model is that the positive and negative pole plate is equipped with the multiple through-holes being mutually communicated, and passes through
The positive and negative pole plate is fixed to form the connection structure for bolt and nut.
Further improvement of the utility model is that the air admission hole and the gas outlet are set on the positive and negative pole plate side
On face, the central shaft of the power interface and the central shaft of the air admission hole and the gas outlet are perpendicular.
The utility model additionally provides a kind of test method of membrane electrode, includes the following steps：
S11：A kind of test fixture of membrane electrode is provided, including：The positive and negative pole plate being oppositely arranged, the positive and negative pole plate phase
Corresponding surface is equipped with a gas flowfield；Air admission hole, venthole and power supply are equipped on the side of the positive and negative pole plate to connect
Mouthful；The air admission hole and the venthole are connected with the gas flowfield；And the connection knot of the fixed positive and negative pole plate
Structure.And measure the resistance of the positive and negative pole plate；S12：Gasket, membrane electrode, gas inlet and outlet connector and electrode is provided to connect
Head, assembling form monocell；S13：Air leakage measuring apparatus is provided, tests the air-tightness of the monocell to ensure safety；
S14：Monocell described in providing Proton Exchange Membrane Fuel Cells test system connectivity measures the open-circuit voltage of the monocell.
Further improvement of the utility model 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 utility model is, assembles monocell includes the following steps： S121：By described in
Gasket is covered on the gas flowfield；S122：The membrane electrode is folded in the gasket, it will using bolt and nut
The positive and negative pole plate fastening；S123：The gas inlet and outlet connector is installed at the air admission hole and venthole, by described in
Electrode contact is installed at the power interface.
Further improvement of the utility model is, provides a torsiometer, and the torsion of each bolt and nut is set as
Value.
Further improvement of the utility model is that the air leakage measuring apparatus includes air compressor machine and copper plate quantifier, surveys
The air-tightness for trying the monocell includes 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 utility model is that the open-circuit voltage for measuring the monocell includes the following steps：
S141：The gas inlet and outlet of Proton Exchange Membrane Fuel Cells test system is correspondingly connected with to the gas of monocell
Inlet-outlet connector, and set test temperature；
S142：Nitrogen is passed through in monocell to empty the air in the monocell；
S143：Air compressor machine is provided, air is each led into monocell；
S144：Multimeter is provided, measures the open-circuit voltage at the monocell both ends, and close air compressor machine.
Further improvement of the utility model is that hydrogen is passed through the air admission hole on the negative plate, and air is passed through described
Air admission hole on positive plate.
The beneficial effects of the utility model compared with the prior art lie in：By by the end plate of original technology, collector plate, double
Pole plate is fused into one, and forms positive and negative pole plate, convenient for disassembly and assembly, and the resistance value of positive and negative pole plate is smaller, the survey to membrane electrode
Examination error can also reduce.
Description of the drawings
Fig. 1 is the schematic diagram of the test fixture of the membrane electrode of the utility model；
Fig. 2 is the schematic diagram of the monocell of the utility model.
Reference numeral
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, gasket, 5, membrane electrode；6th, gas inlet and outlet connector；7th, electrode contact.
Specific embodiment
Below in conjunction with attached drawing, to the utility model, above-mentioned and other technical characteristic and advantage carry out clearly and completely
Description, it is clear that described embodiment is only the section Example rather than whole embodiments of the utility model.
The utility model provides the test fixture and test method of a kind of membrane electrode.Common test fixture is end
Plate, collector plate, bipolar plates are superimposed to be formed, and dismounting is complicated, and also increases the contact resistance of test fixture, increases membrane electrode
Test error.The utility model is convenient for disassembly and assembly by the positive and negative pole plate that is fused into one end plate, collector plate, bipolar plates,
And resistance value is smaller, reduces the error tested membrane electrode.Below in conjunction with the accompanying drawings to the test of the membrane electrode of the utility model
Fixture and test method illustrate.
Refering to Fig. 1,2, the utility model is a kind of test fixture of membrane electrode, including：Positive and negative pole plate 1 and connection knot
Structure.Wherein, positive plate and negative plate are oppositely arranged, and installation gas flowfield is equipped on the corresponding surface of positive and negative pole plate
11, air admission hole 12, venthole 15 and power interface 14 are equipped on the side of positive and negative pole plate.Air admission hole 12 and venthole
15 are extremely connected to the internal stretch of positive and negative pole plate with gas flowfield 11.Positive and negative pole plate 1 is fixedly connected by connection structure.Film electricity
Pole is folded in by a series of components 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
Tool performance, preferable air-tightness, it is easy to process and of low cost the advantages that.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 current density is evenly distributed, avoid hot-spot, the water that can generate reaction
The reaction 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
Liquid water discharges battery, the latter by change the width of ditch and ridge than, channel number and snakelike groove total length it is anti-to adjust
It should gas linear rate of flow in flow field, it is ensured that liquid water is discharged into battery.It is reported that snakelike and rectangle channel groove width
The control of the ratio between degree and the width of 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 generally be controlled
Between 0.5-1.0mm.
The multiple through-holes 13 for penetrating through positive and negative pole plate 1 are equipped on positive and negative pole plate 1, connection structure is bolt 21 and nut 22
Connection, fixation is connected across through-hole 13 by positive and negative pole plate 1.Air admission hole 12 and venthole 15 on positive and negative pole plate 1 be arranged on just,
On side on 1 opposite side of negative plate, in order to by restore after hydrogen ion be delivered at electrode, the central shaft of power interface 14 with into
The axis perpendicular of stomata 12 and venthole 15.
The utility model also describes a kind of test method of membrane electrode, includes the following steps：
(1) first, a measured material as described above is provided, measures the size of the fixture, 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, gasket 4, membrane electrode 5, gas inlet and outlet connector 6 and electrode contact 7 are provided, assembling forms single
Battery includes the following steps：
(a) it is respectively mounted a gasket 4 on the gas flowfield 11 on positive and negative pole plate 1；
(b) membrane electrode is clipped in the gasket 4 of positive and negative pole plate 1, is then consolidated positive and negative pole plate 1 with bolt and nut
Surely it tightens, during being somebody's turn to do, uses torsiometer so that the torsion of each bolt and nut is set as equivalent.
(c) finally gas inlet and outlet connector 6 is mounted at air admission hole 12 and venthole 15, electrode contact 7 is mounted on electricity
At source interface 14.
Wherein, gas flowfield includes mesh flow field and serpentine flow, and the utility model is preferably serpentine flow.
(3) then in order to ensure the safety in measurement process, air-tightness of the air leakage measuring apparatus to monocell need to be utilized
It measures.And air leakage measuring apparatus includes air compressor machine and copper plate quantifier, is as follows：
Copper plate quantifier is installed at body opening 12 and venthole 15, after all inlet and outlet all connect, is opened empty
Press is set separately gas flow and is passed through monocell, treats 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, it using monocell described in Proton Exchange Membrane Fuel Cells test system connectivity, and is measured with multimeter
The open-circuit voltage of monocell, to obtain the performance of membrane electrode 5.Step is as follows：
Successively by assembled monocell gas inlet and outlet and Proton Exchange Membrane Fuel Cells test system gas inlet and outlet
Connection, and default humidification temperature will be tested；It opens nitrogen valve and is passed through nitrogen, start simultaneously at timing, duration of ventilation 10 divides
Clock is waited to close nitrogen valve after ventilating；It opens air compressor machine valve and is 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 the control of test system
Hydrogen switch in panel；Using multimeter test monocell both ends open-circuit voltage, data are recorded after open-circuit voltage stabilization；Test
After hydrogen and air switch in first shutdown test system control panel, be by hydrogen and electronic air valve flow set successively
0, hydrogen bottle valve and air compressor machine valve are closed, removes monocell.
By being made of two pieces of positive and negative pole plate fixations, fusion end plate, collector plate, bipolar plates are integrated the utility model,
The opposite surface of positive and negative pole plate be equipped with 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 are connected with gas flowfield, and air and hydrogen enter gas flowfield by air admission hole
It learns variation to produce electricl energy, clamp structure is simple, convenient for disassembly and assembly, and the simple structure of the utility model reduces test fixture
Resistance reduces the influence to the test result of membrane electrode.
Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect
The detailed description of step, it should be understood that the foregoing is merely specific embodiment of the utility model, are not used to limit this reality
With novel protection domain.Particularly point out, to those skilled in the art, it is all the spirit and principles of the utility model it
Any modification, equivalent substitution, improvement and etc. that are interior, being done, should be included within the scope of protection of this utility model.
Claims (3)
1. a kind of test fixture of membrane electrode, which is characterized in that including：
The positive and negative pole plate being oppositely arranged, the positive and negative corresponding surface of pole plate are equipped with a gas flowfield；The positive and negative electrode
Air admission hole, venthole and power interface are equipped on the side of plate；The air admission hole and the venthole and the gas stream
Field is connected；And the connection structure of the fixed positive and negative pole plate.
2. test fixture according to claim 1, which is characterized in that the positive and negative pole plate is more equipped with being mutually communicated
The positive and negative pole plate is fixed by bolt and nut to form the connection structure for a through-hole.
3. test fixture according to claim 1, which is characterized in that the air admission hole and the venthole are set on described
On positive and negative pole plate side, the central shaft of the power interface and the central shaft of the air admission hole and the venthole are perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038956.6U CN207557294U (en) | 2017-08-18 | 2017-08-18 | The test fixture of membrane electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038956.6U CN207557294U (en) | 2017-08-18 | 2017-08-18 | The test fixture of membrane electrode |
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| Publication Number | Publication Date |
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| CN207557294U true CN207557294U (en) | 2018-06-29 |
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| CN201721038956.6U Active CN207557294U (en) | 2017-08-18 | 2017-08-18 | The test fixture of membrane electrode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543942A (en) * | 2017-08-18 | 2018-01-05 | 浙江科技学院（浙江中德科技促进中心） | The test fixture and method of testing of membrane electrode |
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2017
- 2017-08-18 CN CN201721038956.6U patent/CN207557294U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543942A (en) * | 2017-08-18 | 2018-01-05 | 浙江科技学院（浙江中德科技促进中心） | The test fixture and method of testing of membrane electrode |
| CN107543942B (en) * | 2017-08-18 | 2024-04-12 | 浙江科技学院（浙江中德科技促进中心） | Test fixture and test method for membrane electrode |
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