CN219201684U - Membrane electrode performance test fixture - Google Patents
Membrane electrode performance test fixture Download PDFInfo
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- CN219201684U CN219201684U CN202223374937.4U CN202223374937U CN219201684U CN 219201684 U CN219201684 U CN 219201684U CN 202223374937 U CN202223374937 U CN 202223374937U CN 219201684 U CN219201684 U CN 219201684U
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/30—Hydrogen technology
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Abstract
The utility model provides a membrane electrode performance test fixture which comprises a first heat-insulating shell, a second heat-insulating shell, a negative electrode clamping assembly, a positive electrode clamping assembly and a core body, wherein the negative electrode clamping assembly and the positive electrode clamping assembly are respectively arranged at two sides of the core body, a first protector Wen Kezhao is arranged at one side of the negative electrode clamping assembly, the second heat-insulating shell is covered at one side of the positive electrode clamping assembly, and the first heat-insulating shell and the second heat-insulating shell jointly encapsulate the negative electrode clamping assembly, the positive electrode clamping assembly and the core body in an inner cavity of the first heat-insulating shell and the second heat-insulating shell; the core is the multiunit, and every group core all corresponds the membrane electrode of different effective areas, and every group core all can detachable install between negative pole clamping assembly and anodal clamping assembly. By adopting an integrated multi-core design, a set of universal accessories are matched with cores of a plurality of sizes, when the effective area of the cores is changed, only the sizes of the cores, namely the sizes of the bipolar plates and the electrodes, are changed, the universal accessories are not required to be changed, conditions are provided for experimental flexibility, and the consistency of experimental conditions is ensured.
Description
Technical Field
The utility model relates to the technical field of membrane electrode performance testing fixtures, in particular to a membrane electrode performance testing fixture.
Background
The membrane electrode is a core component for forming the fuel cell and mainly comprises a gas diffusion layer, a catalyst layer and a proton exchange membrane. The performance of the membrane electrode directly affects the performance of the fuel cell, and therefore, it is necessary to test it. The test of the performance of the membrane electrode is mainly carried out by adopting an electrochemical method, the membrane electrode is electrified and then gas is generated through chemical reaction, but on one hand, the membrane electrode is inconvenient to directly electrify and test due to the characteristics of the thickness, the hardness degree and the like of the membrane electrode, and on the other hand, the gas generated after the reaction cannot be collected after the direct electrifying, so that the membrane electrode is generally required to be fixed by adopting a test fixture, and the test fixture is provided with an electric interface and a gas interface. The prior test fixture, such as the one disclosed in the patent with publication number CN210954107U, is only provided with a group of core-flow field plates for fixing the membrane electrode, when the effective area of the membrane electrode is changed, the prior fixture and the core cannot be adopted for testing, and the prior fixture has single corresponding membrane electrode area and poor universality.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: in order to overcome the defects of single membrane electrode area and poor universality corresponding to the test fixture in the prior art, the utility model provides the membrane electrode performance test fixture.
The technical scheme adopted for solving the technical problems is as follows: the membrane electrode performance test fixture comprises a first heat preservation shell, a second heat preservation shell, a negative electrode clamping assembly, a positive electrode clamping assembly and a core body, wherein the negative electrode clamping assembly and the positive electrode clamping assembly are respectively arranged on two sides of the core body, a first protector Wen Kezhao is arranged on one side of the negative electrode clamping assembly, a second heat preservation shell is arranged on one side of the positive electrode clamping assembly, and the first heat preservation shell and the second heat preservation shell jointly encapsulate the negative electrode clamping assembly, the positive electrode clamping assembly and the core body in an inner cavity of the first heat preservation shell and the second heat preservation shell; the core is the multiunit, and every group core all corresponds the membrane electrode of different effective areas, every group the core all can detachable install between negative pole clamping assembly and anodal clamping assembly. When the membrane electrode assembly is used, a membrane electrode core body with a certain effective area is selected and installed between the negative electrode clamping assembly and the positive electrode clamping assembly, if the membrane electrode with another effective area needs to be tested, the original core body is detached, the corresponding other core body is replaced, the membrane electrode with different effective areas is tested by replacing different core bodies, and all parts of the clamp do not need to be replaced.
Specifically, the core body comprises a negative bipolar plate, a negative electrode, a negative sealing gasket, a membrane electrode, a positive sealing gasket and a positive bipolar plate, wherein the negative electrode and the positive electrode are respectively connected to two sides of the membrane electrode, the negative bipolar plate is arranged on one side of the negative electrode, the negative sealing gasket is arranged between the negative bipolar plate and the membrane electrode, a rectangular hole for accommodating the negative electrode is formed in the middle of the negative sealing gasket, and the negative electrode is embedded in the rectangular hole; the positive bipolar plate is arranged on one side of the positive electrode, the positive sealing gasket is arranged between the positive bipolar plate and the membrane electrode, a rectangular hole for accommodating the positive electrode is formed in the middle of the positive sealing gasket, and the positive electrode is embedded in the rectangular hole; the side surface of the negative bipolar plate, which is opposite to the negative electrode, is provided with a negative flow field, and the side surface of the positive bipolar plate, which is opposite to the positive electrode, is provided with a positive flow field.
During testing, hydrogen is generated by the negative electrode, electrolyte is introduced into one side of the positive electrode, sealing between the membrane electrode and the negative bipolar plate is realized through the negative electrode sealing gasket, the generated hydrogen is discharged through a negative electrode flow field on the negative bipolar plate, and then the performance of the membrane electrode can be determined through the discharged gas quantity, so that inaccurate testing caused by gas leakage is avoided; the sealing between the membrane electrode and the anode bipolar plate is realized through the anode sealing gasket, so that the leakage of the entering electrolyte is avoided.
Further, a negative electrode tab, a temperature sensor negative electrode jack, a second fastening screw connecting hole, a hydrogen joint connecting hole and a hydrogen channel are arranged on the negative electrode current collecting plate, wherein the negative electrode tab is used for connecting a power supply negative electrode; the temperature sensor negative electrode jack is used for connecting a negative electrode of the temperature sensor; the second fastening screw connecting hole is used for connecting a second fastening screw, and the second fastening screw penetrates through the first heat-preserving shell to be connected in the second fastening screw connecting hole so as to fix the first heat-preserving shell and the negative electrode current collecting plate; one end of the hydrogen channel is communicated with the negative flow field, the other end of the hydrogen channel is communicated with the hydrogen connector connecting hole, the hydrogen connector connecting hole is connected with a hydrogen outlet connector, hydrogen generated by negative electrode reaction in the negative flow field area is smoothly guided by the negative electrode and then enters the hydrogen channel, and the hydrogen is discharged from the hydrogen outlet connector after passing through the hydrogen channel;
the positive electrode current collecting plate is provided with a positive electrode lug, a positive electrode jack of the temperature sensor, a third fastening screw connecting hole, a water inlet joint connecting hole, a water outlet joint connecting hole, a water inlet channel and a water outlet channel, wherein the positive electrode lug is used for connecting a positive electrode of a power supply; the temperature sensor positive electrode jack is used for connecting the positive electrode of the temperature sensor; the third fastening screw rod connecting hole is used for connecting a third fastening screw rod, and the third fastening screw rod penetrates through the second heat insulation shell to be connected in the third fastening screw rod connecting hole so as to fix the second heat insulation shell and the positive current collecting plate; one end of the water inlet channel is communicated with the inlet end of the anode flow field, the other end of the water inlet channel is communicated with a water inlet joint connecting hole, and a water inlet joint is connected to the water inlet joint connecting hole; one end of the water outlet channel is communicated with the outlet end of the anode flow field, the other end of the water outlet channel is communicated with a water outlet connector connecting hole, and a water outlet connector is connected to the water outlet connector connecting hole; electrolyte flows in from the water inlet joint, enters the positive flow field after passing through the water inlet channel, provides a reaction medium for the positive electrode of the positive flow field area, and is discharged after being electrolyzed by the electrolyte part flowing through the positive flow field area to generate hydrogen, and other unreacted electrolytes are led to the water outlet channel after passing through the positive flow field and are discharged from the water outlet joint.
Further, in order to realize the clamping of the core body, the negative electrode clamping assembly and the positive electrode clamping assembly have the same structure, wherein,
the negative electrode clamping assembly comprises a negative electrode functional gasket, a negative electrode insulating gasket and a negative electrode current collecting plate, wherein one side of the negative electrode current collecting plate is connected with the negative electrode bipolar plate, and the other side of the negative electrode current collecting plate is sequentially connected with the negative electrode insulating gasket and the negative electrode functional gasket;
the positive electrode clamping assembly comprises a positive electrode functional gasket, a positive electrode insulating gasket and a positive electrode current collecting plate, one side of the positive electrode current collecting plate is connected with the positive electrode bipolar plate, and the other side of the positive electrode current collecting plate is sequentially connected with the positive electrode insulating gasket and the positive electrode functional gasket.
Further, the negative electrode functional gasket, the negative electrode insulating gasket, the positive electrode functional gasket and the positive electrode insulating gasket are of annular structures with rectangular orifices in the middle, and the annular surfaces of the negative electrode functional gasket and the positive electrode insulating gasket are provided with openings for disconnecting the annular surfaces of the negative electrode functional gasket and the positive electrode insulating gasket. The functional gasket is mainly used for playing a protective role on the insulating gasket, avoiding damaging the insulating gasket when the first fastening screw is screwed up, but playing a good insulating role, and the edge of the functional gasket is provided with a notch to facilitate wiring.
Preferably, the negative electrode functional gasket and the positive electrode functional gasket are made of stainless steel; the negative electrode insulating gasket and the positive electrode insulating gasket are made of epoxy materials.
Preferably, the first insulating shell and the second insulating shell are made of organic glass.
During testing, heat is generated when the current collecting plate is electrified, so that in order to facilitate timely discharge of the heat and avoid influencing the electrochemical reaction efficiency on the membrane electrode, further, a first heat dissipation hole is formed in the first heat insulation shell and is opposite to rectangular holes of the negative electrode functional gasket and the negative electrode insulating gasket; rectangular orifices are formed in the middle of the negative electrode functional gasket and the negative electrode insulating gasket, so that the negative electrode current collecting plate can be exposed, and heat generated on the negative electrode current collecting plate is conveniently discharged through the first radiating holes; the second heat-insulating shell is provided with a second heat-radiating hole, and the second heat-radiating hole is opposite to rectangular orifices of the positive electrode functional gasket and the positive electrode insulating gasket; the middle parts of the positive electrode functional gasket and the positive electrode insulating gasket are provided with rectangular orifices so as to expose the positive electrode current collecting plate, and heat generated on the positive electrode current collecting plate is conveniently discharged through the second radiating holes.
In order to facilitate quick assembly, the first heat-insulating shell and the second heat-insulating shell have the same structure, and the number and positions of the reserved openings are the same, so that the first heat-insulating shell and the second heat-insulating shell can be arbitrarily selected during installation. Specifically, the first heat preservation shell is further provided with a negative electrode lug opening, a sensor negative electrode opening and a hydrogen joint opening, and the second heat preservation shell is further provided with a positive electrode lug opening, a sensor positive electrode opening, a water inlet joint opening and a water outlet joint opening.
Further, in order to realize the fixed of anchor clamps inner assembly, still include first fastening screw and first fastening nut, first fastening screw and first fastening nut are the multiunit, and first fastening screw runs through negative pole clamping assembly, core and anodal clamping assembly in proper order, and the tip passes through first fastening nut locking.
The beneficial effects of the utility model are as follows: according to the membrane electrode performance test fixture provided by the utility model, an integrated multi-core design concept is adopted, namely, one set of universal accessories is matched with cores with multiple sizes, when the effective area of the cores is changed, namely, when the size of a membrane electrode is changed, only the sizes of the cores, namely, the sizes of bipolar plates and electrode materials, are required to be changed, other universal accessories are not required to be changed, conditions are provided for experimental flexibility, and the consistency of experimental conditions is ensured.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an exploded construction of a test fixture of the present utility model.
Fig. 2 is a schematic perspective view of a test fixture according to the present utility model.
Fig. 3 is a schematic perspective view of a test fixture according to the present utility model.
FIG. 4 is a schematic view of the internal structure of the test fixture of the present utility model.
Fig. 5 is a schematic side view of the internal structure of fig. 4.
FIG. 6 is a schematic cross-sectional view of A-A in FIG. 5.
Fig. 7 is an enlarged schematic view of the structure at B in fig. 6.
Fig. 8 is a schematic sectional view of the water inlet joint.
Fig. 9 is a top view of a positive bipolar plate to positive functional gasket.
Fig. 10 is a schematic sectional view of the structure B-B in fig. 9.
Fig. 11 is a schematic structural view of four positive and negative bipolar plates.
In the figure: 1. a first heat-preserving shell, 1.1, a first heat-radiating hole, 1.2, a negative electrode lug opening, 1.3, a sensor negative electrode opening, 1.4, a hydrogen joint opening, 2, a first fastening screw, 3, a negative electrode functional gasket, 4, a negative electrode insulating gasket, 5, a negative electrode current collecting plate, 5.1, a negative electrode lug, 5.2, a temperature sensor negative electrode jack, 5.3, a second fastening screw connecting hole, 5.4, a hydrogen joint connecting hole, 5.5, a hydrogen channel, 6, a negative electrode bipolar plate, 6.1, a negative electrode flow field, 7, a negative electrode sealing gasket, 7.1, a rectangular hole, 8, a negative electrode, 9, a membrane electrode, 10, a positive electrode, 11, a positive electrode sealing gasket, 11.1, a rectangular hole, 12, a positive electrode bipolar plate, 12.1, a positive electrode flow field, 13, a positive current collecting plate, 13.1, a positive lug, 13.2, a temperature sensor positive jack, 13.3, a third fastening screw connecting hole, 13.4, a water inlet joint connecting hole, 13.5, a water outlet joint connecting hole, 13.6, a water inlet channel, 13.7, a water outlet channel, 14, a positive insulating gasket, 15, a positive function gasket, 16, a second insulating shell, 16.1, a second heat dissipation hole, 16.2, a positive lug opening, 16.3, a sensor positive opening, 16.4, a water inlet joint opening, 16.5, a water outlet joint opening, 17, a first fastening nut, 18, a second fastening screw, 19, a third fastening screw, 20, a water inlet joint, 21, a hydrogen outlet joint, 22 and a water outlet joint.
Description of the embodiments
The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.
As shown in fig. 1 to 4, the performance test fixture for the membrane electrode 9 comprises a first heat insulation shell 1, a second heat insulation shell 16, a negative electrode clamping assembly, a positive electrode clamping assembly and a core body, wherein the negative electrode clamping assembly and the positive electrode clamping assembly are respectively arranged on two sides of the core body, the first heat insulation shell 1 is covered on one side of the negative electrode clamping assembly, the second heat insulation shell 16 is covered on one side of the positive electrode clamping assembly, and the first heat insulation shell 1 and the second heat insulation shell 16 jointly encapsulate the negative electrode clamping assembly, the positive electrode clamping assembly and the core body in an inner cavity of the core body; the cores are multiple groups, each group of cores corresponds to membrane electrodes 9 with different effective areas, and each group of cores can be detachably arranged between the negative electrode clamping assembly and the positive electrode clamping assembly.
In the embodiment, the first heat-insulating shell 1 and the second heat-insulating shell 16 are made of organic glass, and in order to facilitate heat dissipation, the first heat-insulating shell 1 is provided with a first heat dissipation hole 1.1, and the first heat dissipation hole 1.1 is opposite to rectangular openings of the negative electrode functional gasket 3 and the negative electrode insulating gasket 4; the second heat insulation shell 16 is provided with a second heat dissipation hole 16.1, and the second heat dissipation hole 16.1 is opposite to rectangular openings of the positive electrode functional gasket 15 and the positive electrode insulating gasket 14. For easy assembly, the first heat-insulating shell 1 and the second heat-insulating shell 16 have the same structure, and the number and positions of the reserved openings are the same, so that the first heat-insulating shell and the second heat-insulating shell can be arbitrarily selected during installation. Specifically, the first heat-insulating shell 1 is further provided with a negative electrode ear opening 1.2, a sensor negative electrode opening 1.3 and a hydrogen joint opening 1.4, and the second heat-insulating shell 16 is further provided with a positive electrode ear opening 16.2, a sensor positive electrode opening 16.3, a water inlet joint opening 16.4 and a water outlet joint opening 16.5.
As shown in fig. 1, the negative electrode clamping assembly and the positive electrode clamping assembly have the same structure, wherein the negative electrode clamping assembly comprises a negative electrode functional gasket 3, a negative electrode insulating gasket 4 and a negative electrode current collecting plate 5, one side of the negative electrode current collecting plate 5 is connected with a negative electrode bipolar plate 6, and the other side of the negative electrode current collecting plate 5 is sequentially connected with the negative electrode insulating gasket 4 and the negative electrode functional gasket 3; the positive electrode clamping assembly comprises a positive electrode functional gasket 15, a positive electrode insulating gasket 14 and a positive electrode current collecting plate 13, wherein one side of the positive electrode current collecting plate 13 is connected with the positive electrode bipolar plate 12, and the other side of the positive electrode current collecting plate 13 is sequentially connected with the positive electrode insulating gasket 14 and the positive electrode functional gasket 15. The negative electrode functional gasket 3, the negative electrode insulating gasket 4, the positive electrode functional gasket 15 and the positive electrode insulating gasket 14 are all annular structures with rectangular orifices in the middle, and the annular surfaces of the negative electrode functional gasket 3 and the positive electrode insulating gasket 14 are all provided with openings for disconnecting the annular surfaces of the negative electrode functional gasket 3 and the positive electrode insulating gasket 14. Preferably, the negative electrode functional gasket 3 and the positive electrode functional gasket 15 are made of stainless steel; the negative electrode insulating gasket 4 and the positive electrode insulating gasket 14 are made of epoxy materials, and the negative electrode current collecting plate 5 and the positive electrode current collecting plate 13 are preferably made of red copper materials and are plated with gold.
As shown in fig. 4 to 10, the negative electrode collector plate 5 is provided with a negative electrode tab 5.1, a temperature sensor negative electrode jack 5.2, a second fastening screw 18 connecting hole 5.3, a hydrogen joint connecting hole 5.4 and a hydrogen channel 5.5, wherein the negative electrode tab 5.1 is used for connecting a power supply negative electrode, and the negative electrode tab 5.1 penetrates out of the negative electrode tab opening 1.2 of the first heat insulation shell 1; the temperature sensor negative electrode jack 5.2 is used for connecting a negative electrode of a temperature sensor, and the temperature sensor negative electrode jack 5.2 is exposed out of a sensor negative electrode opening 1.3 of the first heat insulation shell 1; the second fastening screw 18 connecting hole 5.3 is used for connecting the second fastening screw 18, and the second fastening screw 18 passes through the first heat insulation shell 1 to be connected in the second fastening screw 18 connecting hole 5.3, so that the first heat insulation shell 1 and the negative electrode current collecting plate 5 are fixed; one end of the hydrogen channel 5.5 is communicated with the negative flow field 6.1, the other end of the hydrogen channel is communicated with the hydrogen joint connecting hole 5.4, the hydrogen joint connecting hole 5.4 is connected with a hydrogen outlet joint 21, and the hydrogen outlet joint 21 penetrates out of the hydrogen joint opening 1.4 of the first heat insulation shell 1; the hydrogen generated by the reaction of the negative electrode 8 in the area of the negative flow field 6.1 is smoothly guided by the negative electrode and then enters the hydrogen channel 5.5, and is discharged from the hydrogen outlet joint 21 after passing through the hydrogen channel 5.5. The positive electrode collector plate 13 is provided with a positive electrode tab 13.1, a temperature sensor positive electrode jack 13.2, a third fastening screw 19 connecting hole 13.3, a water inlet connector connecting hole 13.4, a water outlet connector connecting hole 13.5, a water inlet channel 13.6 and a water outlet channel 13.7, wherein the positive electrode tab 13.1 is used for connecting a power supply positive electrode, and the positive electrode tab 13.1 penetrates out of a positive electrode tab opening 16.2 of the second insulation shell 16; the temperature sensor positive electrode jack 13.2 is used for connecting a positive electrode of a temperature sensor, and the temperature sensor positive electrode jack 13.2 is exposed from a sensor positive electrode opening 16.3 of the second heat insulation shell 16; the third fastening screw 19 connecting hole 13.3 is used for connecting a third fastening screw 19, and the third fastening screw 19 passes through the second heat insulation shell 16 to be connected in the third fastening screw 19 connecting hole 13.3, so that the second heat insulation shell 16 and the positive current collecting plate 13 are fixed; one end of the water inlet channel 13.6 is communicated with the inlet end of the anode flow field 12.1, the other end of the water inlet channel 13.6 is communicated with the water inlet joint connecting hole 13.4, the water inlet joint connecting hole 13.4 is connected with a water inlet joint 20, and the water inlet joint 20 penetrates out from the water inlet joint opening 16.4 of the second heat insulation shell 16; one end of the water outlet channel 13.7 is communicated with the outlet end of the anode flow field 12.1, the other end of the water outlet channel 13.7 is communicated with the water outlet connector connecting hole 13.5, the water outlet connector connecting hole 13.5 is connected with a water outlet connector 22, and the water outlet connector 22 penetrates out of the water outlet connector opening 16.5 of the second heat insulation shell 16; electrolyte flows in from the water inlet joint 20, enters the positive flow field 12.1 after passing through the water inlet channel 13.6, provides a reaction medium for the positive electrode 10 in the area of the positive flow field 12.1, and is discharged after being electrolyzed by part of the electrolyte flowing through the area of the positive flow field 12.1, and other unreacted electrolytes are led to enter the water outlet channel 13.7 after passing through the positive flow field 12.1 and are discharged from the water outlet joint 22, wherein an arrow in fig. 10 indicates the flowing direction of the electrolyte.
As shown in fig. 6-7, the core body comprises a negative bipolar plate 6, a negative electrode 8, a negative sealing gasket 7, a membrane electrode 9, a positive electrode 10, a positive sealing gasket 11 and a positive bipolar plate 12, wherein the negative electrode 8 and the positive electrode 10 are respectively connected to two sides of the membrane electrode 9, the negative bipolar plate 6 is arranged on one side of the negative electrode 8, the negative sealing gasket 7 is arranged between the negative bipolar plate 6 and the membrane electrode 9, a rectangular hole 7.1 for accommodating the negative electrode 8 is arranged in the middle of the negative sealing gasket 7, the negative electrode 8 is embedded in the rectangular hole 7.1, and two C-shaped openings for communicating with the inlet end of the hydrogen channel 5.5 are also arranged on one group of diagonals of the rectangular hole 7.1; the positive bipolar plate 12 is arranged on one side of the positive electrode 10, the positive sealing gasket 11 is arranged between the positive bipolar plate 12 and the membrane electrode 9, a rectangular hole 11.1 for accommodating the positive electrode 10 is arranged in the middle of the positive sealing gasket 11, the positive electrode 10 is embedded in the rectangular hole 11.1, and two C-shaped openings which are respectively communicated with the outlet end of the water inlet channel 13.6 and the inlet end of the water outlet channel 13.7 are also arranged on a group of opposite angles of the rectangular hole 7.1; the side surface of the negative bipolar plate 6, which is opposite to the negative electrode 8, is provided with a negative flow field 6.1, and the side surface of the positive bipolar plate 12, which is opposite to the positive electrode 10, is provided with a positive flow field 12.1. In this embodiment, the negative bipolar plate 6 and the positive bipolar plate 12 are preferably titanium plates, the negative electrode 8 and the positive electrode 10 are preferably titanium felts, the membrane electrode 9 is prepared according to experimental requirements, and the negative sealing gasket 7 and the positive sealing gasket 11 are preferably tetrafluoro gaskets and fluororubber gaskets. The membrane electrode 9 fixture and the membrane electrode 9 form an electrolytic cell.
Further, in order to realize the fixed of anchor clamps internal component, still include first fastening screw rod 2 and first fastening nut 17, first fastening screw rod 2 and first fastening nut 17 are the multiunit, and first fastening screw rod 2 runs through negative pole clamping component, core and positive pole clamping component in proper order, and the tip passes through first fastening nut 17 locking. In this embodiment, the first fastening screw 2 and the first fastening nut 17 are 9 groups, and the first fastening screw 2 is preferably made of stainless steel.
As shown in fig. 11, a schematic structural diagram of the positive and negative bipolar plates 6 corresponding to the effective areas of four groups of different membrane electrodes 9 is provided, the first row represents a schematic structural diagram of the negative bipolar plates 6, and the second row represents a schematic structural diagram of the positive bipolar plates 12 corresponding to the first row of the negative bipolar plates 6 one by one.
The first group, the negative flow field 6.1 of the negative bipolar plate 6 is square, the positive flow field 12.1 of the corresponding positive bipolar plate 12 is an S-shaped curved flow field, and the effective area of the membrane electrode 9 which can be tested by the bipolar plate of the group is the basic test area.
The second group, the negative electrode flow field 6.1 of the negative electrode bipolar plate 6 is a rectangle, the positive electrode flow field 12.1 of the corresponding positive electrode bipolar plate 12 is an S-shaped curved flow field, the effective area of the membrane electrode 9 which can be tested by the bipolar plate of the group is 2 times of that of the first group, and the lengths of the corresponding negative electrode flow field 6.1 and the positive electrode flow field 12.1 in the group are 2 times of that of the first group and the widths are the same.
And in the third group, the negative flow field 6.1 of the negative bipolar plate 6 is square, the positive flow field 12.1 of the corresponding positive bipolar plate 12 is two S-shaped curved flow fields, the effective area of the membrane electrode 9 which can be tested by the bipolar plate of the group is 4 times that of the first group, and the corresponding side lengths of the negative flow field 6.1 and the positive flow field 12.1 in the group are 2 times that of the first group.
And in the fourth group, the negative flow field 6.1 of the negative bipolar plate 6 is square, the positive flow field 12.1 of the corresponding positive bipolar plate 12 is three S-shaped curved flow fields, the effective area of the membrane electrode 9 which can be tested by the bipolar plate of the group is 9 times that of the first group, and the corresponding side lengths of the negative flow field 6.1 and the positive flow field 12.1 in the group are 3 times that of the first group.
While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A membrane electrode performance test fixture is characterized in that: the solar cell comprises a first heat preservation shell, a second heat preservation shell, a negative electrode clamping assembly, a positive electrode clamping assembly and a core body, wherein the negative electrode clamping assembly and the positive electrode clamping assembly are respectively arranged on two sides of the core body, a first protector Wen Kezhao is arranged on one side of the negative electrode clamping assembly, a second heat preservation shell is arranged on one side of the positive electrode clamping assembly, and the first heat preservation shell and the second heat preservation shell jointly encapsulate the negative electrode clamping assembly, the positive electrode clamping assembly and the core body in an inner cavity of the first heat preservation shell and the second heat preservation shell; the core is the multiunit, and every group core all corresponds the membrane electrode of different effective areas, every group the core all can detachable install between negative pole clamping assembly and anodal clamping assembly.
2. The membrane electrode performance test fixture of claim 1, wherein: the core body comprises a negative bipolar plate, a negative electrode, a negative sealing gasket, a membrane electrode, a positive sealing gasket and a positive bipolar plate, wherein the negative electrode and the positive electrode are respectively connected to two sides of the membrane electrode, the negative bipolar plate is arranged on one side of the negative electrode, the negative sealing gasket is arranged between the negative bipolar plate and the membrane electrode, a rectangular hole for accommodating the negative electrode is formed in the middle of the negative sealing gasket, and the negative electrode is embedded in the rectangular hole; the positive bipolar plate is arranged on one side of the positive electrode, the positive sealing gasket is arranged between the positive bipolar plate and the membrane electrode, a rectangular hole for accommodating the positive electrode is formed in the middle of the positive sealing gasket, and the positive electrode is embedded in the rectangular hole; the side surface of the negative bipolar plate, which is opposite to the negative electrode, is provided with a negative flow field, and the side surface of the positive bipolar plate, which is opposite to the positive electrode, is provided with a positive flow field.
3. The membrane electrode performance test fixture of claim 1, wherein: the negative electrode clamping assembly and the positive electrode clamping assembly have the same structure, wherein the negative electrode clamping assembly comprises a negative electrode functional gasket, a negative electrode insulating gasket and a negative electrode current collecting plate, one side of the negative electrode current collecting plate is connected with a negative electrode bipolar plate, and the other side of the negative electrode current collecting plate is sequentially connected with the negative electrode insulating gasket and the negative electrode functional gasket; the positive electrode clamping assembly comprises a positive electrode functional gasket, a positive electrode insulating gasket and a positive electrode current collecting plate, one side of the positive electrode current collecting plate is connected with the positive electrode bipolar plate, and the other side of the positive electrode current collecting plate is sequentially connected with the positive electrode insulating gasket and the positive electrode functional gasket.
4. A membrane electrode performance test fixture as defined in claim 3, wherein: the negative electrode collector plate is provided with a negative electrode lug, a temperature sensor negative electrode jack, a second fastening screw connecting hole, a hydrogen joint connecting hole and a hydrogen channel, wherein the negative electrode lug is used for connecting a power supply negative electrode; the temperature sensor negative electrode jack is used for connecting a negative electrode of the temperature sensor; the second fastening screw connecting hole is used for connecting a second fastening screw, and the second fastening screw penetrates through the first heat-preserving shell to be connected in the second fastening screw connecting hole so as to fix the first heat-preserving shell and the negative electrode current collecting plate; one end of the hydrogen channel is communicated with the negative flow field, the other end of the hydrogen channel is communicated with the hydrogen joint connecting hole, and the hydrogen joint connecting hole is connected with a hydrogen outlet joint;
the positive electrode current collecting plate is provided with a positive electrode lug, a positive electrode jack of the temperature sensor, a third fastening screw connecting hole, a water inlet joint connecting hole, a water outlet joint connecting hole, a water inlet channel and a water outlet channel, wherein the positive electrode lug is used for connecting a positive electrode of a power supply; the temperature sensor positive electrode jack is used for connecting the positive electrode of the temperature sensor; the third fastening screw rod connecting hole is used for connecting a third fastening screw rod, and the third fastening screw rod penetrates through the second heat insulation shell to be connected in the third fastening screw rod connecting hole so as to fix the second heat insulation shell and the positive current collecting plate; one end of the water inlet channel is communicated with the inlet end of the anode flow field, the other end of the water inlet channel is communicated with a water inlet joint connecting hole, and a water inlet joint is connected to the water inlet joint connecting hole; one end of the water outlet channel is communicated with the outlet end of the anode flow field, the other end of the water outlet channel is communicated with the water outlet connector connecting hole, and the water outlet connector connecting hole is connected with a water outlet connector.
5. A membrane electrode performance test fixture as defined in claim 3, wherein: the negative electrode functional gasket, the negative electrode insulating gasket, the positive electrode functional gasket and the positive electrode insulating gasket are annular structures with rectangular orifices in the middle, and annular surfaces of the negative electrode functional gasket and the positive electrode insulating gasket are provided with openings for disconnecting the annular surfaces of the negative electrode functional gasket and the positive electrode insulating gasket.
6. The membrane electrode performance test fixture of claim 5, wherein: the negative electrode functional gasket and the positive electrode functional gasket are made of stainless steel materials; the negative electrode insulating gasket and the positive electrode insulating gasket are made of epoxy materials.
7. The membrane electrode performance test fixture of claim 1, wherein: the first heat-insulating shell and the second heat-insulating shell are made of organic glass.
8. The membrane electrode performance test fixture of claim 1, wherein: a first heat dissipation hole is formed in the first heat preservation shell, and the first heat dissipation hole is opposite to rectangular holes of the negative electrode functional gasket and the negative electrode insulating gasket; and a second heat-dissipating hole is formed in the second heat-insulating shell and is opposite to rectangular orifices of the positive functional gasket and the positive insulating gasket.
9. The membrane electrode performance test fixture of claim 1, wherein: the first heat preservation shell is also provided with a negative electrode lug opening, a sensor negative electrode opening and a hydrogen joint opening, and the second heat preservation shell is also provided with a positive electrode lug opening, a sensor positive electrode opening, a water inlet joint opening and a water outlet joint opening.
10. The membrane electrode performance test fixture of claim 1, wherein: still include first fastening screw and first fastening nut, first fastening screw and first fastening nut are the multiunit, and first fastening screw runs through negative pole clamping assembly, core and anodal clamping assembly in proper order, and the tip passes through first fastening nut locking.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223374937.4U CN219201684U (en) | 2022-12-13 | 2022-12-13 | Membrane electrode performance test fixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223374937.4U CN219201684U (en) | 2022-12-13 | 2022-12-13 | Membrane electrode performance test fixture |
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| CN219201684U true CN219201684U (en) | 2023-06-16 |
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