CN220064122U - Carbon paper resistivity test fixture for fuel cell - Google Patents
Carbon paper resistivity test fixture for fuel cell Download PDFInfo
- Publication number
- CN220064122U CN220064122U CN202320721159.7U CN202320721159U CN220064122U CN 220064122 U CN220064122 U CN 220064122U CN 202320721159 U CN202320721159 U CN 202320721159U CN 220064122 U CN220064122 U CN 220064122U
- Authority
- CN
- China
- Prior art keywords
- probes
- probe
- horizontal
- carbon paper
- fuel cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 239000000446 fuel Substances 0.000 title claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 107
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model relates to a carbon paper resistivity test fixture of a fuel cell, which comprises an insulation fixture, a conductive fixture and probes, wherein the insulation fixture and the conductive fixture are arranged up and down, the probes are arranged in the insulation fixture, each probe comprises four vertical probes, a first horizontal probe and at least one second horizontal probe, the four vertical probes and the first horizontal probes are respectively distributed at equal intervals in a linear mode, the vertical probes are respectively connected with the first horizontal probes in a one-to-one correspondence mode, the second horizontal probes are connected with one of the vertical probes, the vertical probes penetrate through the lower end face of the insulation fixture, and the first horizontal probes and the second horizontal probes penetrate through the side end faces of the insulation fixture. The probe comprises four vertical probes, a first horizontal probe and at least one second horizontal probe, so that synchronous test of the resistivity of the carbon paper in the horizontal direction and the resistivity of the carbon paper in the vertical direction under the required compression state can be realized, and the measurement accuracy is improved.
Description
Technical Field
The utility model relates to the technical field of fuel cell detection equipment, in particular to a carbon paper resistivity test fixture for a fuel cell.
Background
The resistivity of the gas diffusion layer for the fuel cell is an important parameter for representing the performance of the gas diffusion layer, and the gas diffusion layer is in a compressed state in the fuel cell, and the compressed pressure is generally 1MPa-1.5MPa, so that the resistivity of the gas diffusion layer under different compression states is important for evaluating the performance of the gas diffusion layer. Meanwhile, the gas diffusion layer is of a two-layer structure and consists of a basal layer and a microporous layer, so that the resistivity in the vertical direction and the resistivity in the horizontal direction are greatly different, the measurement modes are different, the measurement is needed respectively, and the measurement of the resistivity in the vertical direction and the resistivity in the horizontal direction can be realized respectively by the existing means.
The Chinese patent publication No. CN107543942A discloses a test fixture for a membrane electrode, which comprises a positive plate and a negative plate which are oppositely arranged, wherein a gas flow field is arranged on the corresponding surfaces of the positive plate and the negative plate, air inlet holes, air outlet holes and a power interface are arranged on the side surfaces of the positive plate and the negative plate, the air inlet holes and the air outlet holes are communicated with the flow field, and the test fixture can only measure the resistivity in the vertical direction.
Disclosure of Invention
The utility model aims to provide a carbon paper resistivity test fixture for a fuel cell, which is used for testing the vertical resistivity and the horizontal resistivity of carbon paper under a specified pressure.
The above object of the present utility model is achieved by the following technical solutions: the utility model provides a fuel cell carbon paper resistivity test fixture, is including being insulating fixture and the conductive fixture and the setting that set up from top to bottom are in probe in the insulating fixture, the probe includes four perpendicular probes and first horizontal probe and at least one second horizontal probe, four perpendicular probes and first horizontal probe are linear equidistant distribution respectively, just perpendicular probe is connected with first horizontal probe one-to-one respectively, second horizontal probe with one of them perpendicular probe is connected, perpendicular probe wear to establish to the lower terminal surface of insulating fixture, first horizontal probe and second horizontal probe wear to establish to the side terminal surface of insulating fixture.
Preferably, the conductive jig includes a copper plate, and a gold plating layer is provided on a surface of the copper plate.
Preferably, the vertical probes are arranged in the same vertical plane, and the lengths of the four vertical probes are equal.
Preferably, the first horizontal probe and the second horizontal probe are arranged in the same horizontal plane, and the first horizontal probe and the second horizontal probe are arranged in an L shape.
Preferably, the insulation fixture comprises a fixture seat, a mounting groove arranged in the fixture seat and four movable clamping blocks movably arranged in the mounting groove, the four probes are respectively arranged in the four movable clamping blocks, a hydraulic component is arranged at the top of the mounting groove, and the upper ends of the four movable clamping blocks are connected to the hydraulic component.
Preferably, the hydraulic assembly comprises a hydraulic cylinder fixed in the mounting groove, four hydraulic ports distributed on the hydraulic cylinder at equal intervals, and movable plugs arranged in the hydraulic ports, and the four movable clamping blocks are respectively connected to the corresponding movable plugs.
The utility model has the beneficial effects that: the probe comprises four vertical probes, a first horizontal probe and at least one second horizontal probe, so that synchronous test of the resistivity of the carbon paper in the horizontal direction and the resistivity of the carbon paper in the vertical direction under the required compression state can be realized, and the measurement accuracy is improved.
Drawings
FIG. 1 is a schematic view showing the structure of a test jig according to embodiment 1 of the present utility model;
FIG. 2 is a schematic diagram showing the distribution of probes in example 1 of the present utility model;
fig. 3 is a schematic structural view of an insulating jig in embodiment 2 of the present utility model;
in the figure: 1-insulating clamp, 101-clamp seat, 102-mounting groove, 103-movable clamp block, 2-conductive clamp, 201-copper plate, 202-gold plating layer, 3-probe, 301-vertical probe, 302-first horizontal probe, 303-second horizontal probe, 4-hydraulic component, 401-hydraulic cylinder, 402-hydraulic port, 403-movable plug, 5-resistance meter.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model, may be made by those skilled in the art after reading the present specification, are only protected by patent laws within the scope of the claims of the present utility model.
Examples
As shown in fig. 1 and 2, a carbon paper resistivity test fixture for a fuel cell comprises an insulation fixture 1, a conductive fixture 2 and a probe 3, wherein the insulation fixture 1 and the conductive fixture 2 are arranged up and down, the probe 3 is arranged in the insulation fixture 1, the insulation fixture 1 is made of an insulating material such as epoxy resin or PTFE, the conductive fixture 2 is a copper plate 201, and a gold plating layer 202 is arranged on the surface of the copper plate 201.
The probes 3 comprise four vertical probes 301, four first horizontal probes 302 and at least one second horizontal probe 303, the four vertical probes 301 and the first horizontal probes 302 are distributed at equal intervals in a linear mode, and the vertical probes 301 are connected with the first horizontal probes 302 in a one-to-one correspondence mode, so that the two probes are connected in an L shape.
Wherein the material of the probe 3 is a conductive material such as gold-plated tungsten, gold-plated copper and the like, the distance between the probes 3 is 5mm-20mm, and the diameter of the probe is 0.5mm-2mm.
The second horizontal probes 303 are connected to one of the vertical probes 301, and in this embodiment, the number of the second horizontal probes 303 is one, the second horizontal probes 303 are connected to the vertical probes 301 located at the end of the arrangement direction in an L shape, and the first horizontal probes 302 are arranged in an L shape with respect to the second horizontal probes 303 located at the end of the arrangement direction.
The vertical probes 301 are arranged on the lower end face of the insulation clamp 1 in a penetrating mode, the lower ends of the four vertical probes 301 are flush with the lower end face of the insulation clamp 1, the vertical probes 301 are arranged in the same vertical plane, and the lengths of the four vertical probes 301 are equal.
The first horizontal probe 302 and the second horizontal probe 303 are penetrated to the side end face of the insulating jig 1, and the first horizontal probe 302 and the second horizontal probe 303 are disposed in the same horizontal plane. In this embodiment, the insulating fixture 1 is cylindrical, and the ends of the first horizontal probe 302 and the second horizontal probe 303 are flush with the cylindrical surface of the insulating fixture 1.
The test procedure was as follows:
1. clamping the insulating clamp 1 and the conductive clamp 2 between an upper plane and a lower plane of the universal testing machine, setting required pressure according to the pressure intensity, and operating the universal testing machine to apply the required pressure intensity to the carbon paper;
2. measuring the resistivity in the vertical direction according to the connection circuit of the resistivity test circuit diagram in the vertical direction shown in fig. 1, measuring the resistance in the vertical direction of the carbon paper by using a resistance meter, and calculating the resistivity in the vertical direction according to the following formula:
⍴=R·s/t
wherein ⍴ is the resistance value measured by a resistance meter, s is the surface area of the probe of the upper clamp for testing, and t is the thickness value of the carbon paper of 1 MPa.
3. Measuring the resistivity in the horizontal direction, applying a fixed current to the outer sides of the four probes according to a connecting circuit of a resistivity test circuit diagram in the horizontal direction shown in fig. 2, measuring the voltage of two probes on the inner sides of the four probes, and calculating the resistivity in the horizontal direction according to the following formula:
⍴=Πt·V/I·ln2
wherein ⍴ is the resistance value measured by a resistor, V is the voltage value measured by a voltmeter, I is the applied current value measured by the ammeter, and t is the thickness value of the carbon paper of 1 MPa.
Examples
As shown in fig. 3, the insulating jig 1 is different from embodiment 1 in that the insulating jig 1 includes a jig base 101, a mounting groove 102 provided in the jig base 101, and four movable clamp blocks 103 movably provided in the mounting groove 102, four probes 3 are separately provided in the four movable clamp blocks 103, a hydraulic assembly 4 is provided at the top of the mounting groove 102, and the upper ends of the four movable clamp blocks 103 are connected to the hydraulic assembly 4.
The hydraulic assembly 4 comprises a hydraulic cylinder 401 fixed in the mounting groove 102, four hydraulic ports 402 distributed on the hydraulic cylinder 401 at equal intervals, and movable plugs 403 arranged in the hydraulic ports 402, and four movable clamp blocks 103 are respectively connected to the corresponding movable plugs 403. Because the diameters of the four movable plugs 403 are equal, the sizes of the four movable clamping blocks 103 are also consistent, so that when pressure is applied to the carbon paper, the pressures applied to the four movable clamping blocks 103 are also equal, and the force applied by the probe 3 on the surface of the carbon paper is ensured to be consistent.
Claims (6)
1. The utility model provides a fuel cell carbon paper resistivity test fixture which characterized in that: including insulating anchor clamps (1) and conducting jig (2) and the setting that are set up from top to bottom are in probe (3) in insulating anchor clamps (1), probe (3) include four perpendicular probes (301) and first horizontal probe (302) and at least one second horizontal probe (303), four perpendicular probes (301) and first horizontal probe (302) are linear equidistant distribution respectively, just perpendicular probes (301) are connected with first horizontal probe (302) one-to-one respectively, second horizontal probe (303) are connected with one of them perpendicular probe (301), perpendicular probe (301) wear to establish to the lower terminal surface of insulating anchor clamps (1), first horizontal probe (302) and second horizontal probe (303) wear to establish to the side terminal surface of insulating anchor clamps (1).
2. The fuel cell carbon paper resistivity test fixture of claim 1, wherein: the conductive clamp (2) comprises a copper plate (201), and a gold plating layer (202) is arranged on the surface of the copper plate (201).
3. The fuel cell carbon paper resistivity test fixture of claim 1, wherein: the vertical probes (301) are arranged in the same vertical plane, and the lengths of the four vertical probes (301) are equal.
4. The fuel cell carbon paper resistivity test fixture of claim 1, wherein: the first horizontal probe (302) and the second horizontal probe (303) are arranged in the same horizontal plane, and the first horizontal probe (302) and the second horizontal probe (303) are arranged in an L shape.
5. The fuel cell carbon paper resistivity test fixture of claim 1, wherein: the insulation clamp (1) comprises a clamp seat (101), a mounting groove (102) arranged in the clamp seat (101) and four movable clamping blocks (103) movably arranged in the mounting groove (102), the four probes (3) are respectively arranged in the four movable clamping blocks (103), a hydraulic component (4) is arranged at the top of the mounting groove (102), and the upper ends of the four movable clamping blocks (103) are connected to the hydraulic component (4).
6. The fuel cell carbon paper resistivity test fixture of claim 5, wherein: the hydraulic assembly (4) comprises a hydraulic cylinder (401) fixed in the mounting groove (102), four hydraulic ports (402) distributed on the hydraulic cylinder (401) at equal intervals, and movable plugs (403) arranged in the hydraulic ports (402), wherein the four movable clamping blocks (103) are respectively connected to the corresponding movable plugs (403).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320721159.7U CN220064122U (en) | 2023-04-04 | 2023-04-04 | Carbon paper resistivity test fixture for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320721159.7U CN220064122U (en) | 2023-04-04 | 2023-04-04 | Carbon paper resistivity test fixture for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220064122U true CN220064122U (en) | 2023-11-21 |
Family
ID=88754482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320721159.7U Active CN220064122U (en) | 2023-04-04 | 2023-04-04 | Carbon paper resistivity test fixture for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220064122U (en) |
-
2023
- 2023-04-04 CN CN202320721159.7U patent/CN220064122U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |