CN219419108U - Fuel cell gas diffusion electrode testing device - Google Patents
Fuel cell gas diffusion electrode testing device Download PDFInfo
- Publication number
- CN219419108U CN219419108U CN202220743782.8U CN202220743782U CN219419108U CN 219419108 U CN219419108 U CN 219419108U CN 202220743782 U CN202220743782 U CN 202220743782U CN 219419108 U CN219419108 U CN 219419108U
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- China
- Prior art keywords
- gas diffusion
- diffusion electrode
- fuel cell
- plate
- humidifying
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- 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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- 238000009792 diffusion process Methods 0.000 title claims abstract description 46
- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 239000000446 fuel Substances 0.000 title claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 238000010438 heat treatment Methods 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 24
- 230000001502 supplementing effect Effects 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 230000005404 monopole Effects 0.000 claims description 6
- 150000003460 sulfonic acids Chemical class 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229920000557 Nafion® Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000000126 substance 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
- Fuel Cell (AREA)
Abstract
The utility model belongs to the field of fuel cell testing, and provides a gas diffusion electrode testing device capable of realizing temperature control, pressure control and humidification. A testing device for a gas diffusion electrode of a fuel cell comprises a membrane electrode, and a sealing gasket, a polar plate, a current collecting plate, an end plate and a humidifying module which are symmetrically and sequentially arranged on two sides of the membrane electrode. After passing through the air inlet interface, the air is changed into saturated vapor at a certain temperature after passing through the humidifying pot, and then enters the air diffusion electrode. The scheme can realize temperature control, pressure control and humidification of the gas diffusion electrode and humidity control.
Description
Technical Field
The utility model belongs to the field of fuel cell testing, and particularly relates to a fuel cell gas diffusion electrode testing device.
Background
The fuel cell is a device for converting chemical energy in hydrogen fuel into electric energy, and has become a hot spot for research in the energy field by virtue of the advantages of low working temperature, no pollution, no corrosion, high energy conversion rate, high specific power, quick start and the like.
Since a fuel cell stack is formed by stacking a plurality of unit gas diffusion electrodes, performance testing of the gas diffusion electrodes is an indispensable aspect in the development of fuel cells. The gas diffusion electrode testing fixture commonly used in the market at present is generally composed of a graphite polar plate, a current collecting plate, two side end plates, a sealing gasket, an insulating plate, a material inlet and outlet and a fastening piece, and can only realize gas diffusion electrode testing at normal temperature and normal pressure.
Aiming at the technical problems: the common gas diffusion electrode test fixture in the current market cannot guarantee the humidifying test condition and cannot detect the internal pressure of a single cell.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a multifunctional fuel cell gas diffusion electrode testing device with higher integration level, which is suitable for testing and characterizing the performance of the gas diffusion electrode under various environmental conditions.
The technical scheme of the utility model is as follows:
a testing device for a gas diffusion electrode of a fuel cell comprises a membrane electrode, and a sealing gasket, a polar plate, a current collecting plate, an end plate and a humidifying module which are symmetrically and sequentially arranged on the two sides of the membrane electrode; wherein the two side end plates are respectively provided with a feed inlet and a discharge outlet, and the feed inlets at the two sides are respectively communicated with the humidifying module; the heating devices are heating rods arranged in the end plates or heating sheets arranged on the outer sides of the end plates; the back pressure valve is arranged on the end plate discharge port pipeline, the internal pressure of the fuel cell can be adjusted through the knob, and the outlet pipeline can be further provided with a pressure gauge for measuring the pressure at the outlet of the testing device. The thermocouple is further arranged in any end plate on two sides and is fixed in any end plate through a screw, the heating device, the thermocouple and the temperature control instrument are connected through a circuit, and PID adjustment of the temperature of the gas diffusion electrode testing device is achieved through a temperature control meter inside the temperature control instrument.
Further, in the above technical solution, the humidification module may be in three forms, specifically as follows:
form one:
the humidifying module comprises water storage tanks which are respectively fixed on the outer side surfaces of the end plates at two sides, and a one-way filling valve is arranged at the upper end of each water storage tank and used for filling deionized water; the lower end is provided with an air inlet, and the feed inlet of the end plate is arranged at the opposite angle of the feed inlet of the water storage tank, so that the inner cavity of the water storage tank is communicated with the feed inlet of the end plate. In the use process, water in the water storage tank can be heated through the heating device on the end plate, and the introduced air/hydrogen enters the gas diffusion electrode after the humidification process is completed through hot water, so that the humidification function of the gas diffusion electrode of the fuel cell is realized.
Furthermore, in the above technical scheme, the water storage tank further comprises a visual liquid level meter, so that the liquid level in the water storage tank can be conveniently detected.
Furthermore, in the above technical scheme, a pressure gauge is further arranged at the upper end of the water storage tank, so as to monitor the inlet pressure of the gas diffusion electrode testing device.
This scheme integrated level is high, and aqua storage tank and end plate direct contact need not unnecessary pipe connection, and utilizes same heating device to heat the deionized water in gas diffusion electrode and the aqua storage tank simultaneously to realize temperature control, pressure control and humidification's function simultaneously through the device of integration.
Form two:
the humidifying module comprises a liquid storage cavity and a water supplementing cavity which are separated by a perfluorinated sulfonic acid resin film; wherein the lower end of the liquid storage cavity is provided with an air inlet, and the upper end of the liquid storage cavity is communicated with the feed inlet of the end plate; the water supplementing cavity consists of a water supplementing monopole plate, a flow field of the monopole plate is contacted with the perfluorinated sulfonic acid resin membrane, and a liquid inlet end and a liquid outlet end of the pole plate are connected with external circulating water.
According to the scheme, a one-way filling valve is not needed, deionized water is uniformly and slowly filled into the liquid storage cavity to the required liquid level through the perfluorinated sulfonic acid resin film and the flow field, and the stability of humidification performance is ensured.
Form three:
the humidifying module comprises a humidifying tank and a temperature controller, wherein the humidifying tank is provided with a heating sleeve connected with the temperature controller and a one-way filling valve, the lower end of the humidifying tank is provided with an air inlet, and the upper end of the humidifying tank is provided with an air outlet which is communicated with the end plate feed inlet; the humidifying tank is preferably composed of a stainless steel tank body, a flange sealing cover, a pressure gauge, the heating sleeve, a one-way filling valve, an air inlet and an air outlet.
After passing through the air inlet interface, the air is changed into saturated steam at a certain temperature through the humidifying pot and then enters the air diffusion electrode, so that the temperature and humidity adjustment at normal temperature and humidity of 100 ℃ and RH100% is realized.
The scheme can realize temperature control, pressure control and humidification of the gas diffusion electrode and humidity control.
Drawings
Fig. 1 is a schematic diagram of a testing device for a gas diffusion electrode of a fuel cell according to a first embodiment of the present utility model, wherein 101 is an end plate, 102 is a current collecting plate, 103 is a graphite electrode plate, 104 is a membrane electrode, 105 is a feed inlet, 106 is a discharge outlet, 107 is a water storage tank, 108 is a filling check valve, 109 is a pressure gauge, 110 is a liquid level gauge, 111 is a heating plate, and 112 is a thermocouple.
Fig. 2 is a schematic view of a water storage tank according to a first embodiment of the present utility model.
Fig. 3 is a schematic diagram of a humidification module according to a second embodiment of the present utility model, wherein 301 is a unipolar plate, 302 is an end plate, 303 is a liquid storage chamber, 304 is a Nafion membrane, and 305 is a moisturizing plate.
Fig. 4 is a schematic diagram of a third embodiment of the present utility model.
Detailed Description
While the present utility model is susceptible of embodiment in many ways, there is shown in the drawings and will hereinafter be described in detail, a specific embodiment of the utility model with the understanding that the present disclosure is to be considered an exemplification of the principles of the utility model, and is not intended to limit the utility model to that as illustrated.
Example 1:
as shown in FIG. 1, a fuel cell gas diffusion electrode testing device comprises a membrane electrode, and a graphite polar plate, a collector plate, an end plate and a humidifying module which are symmetrically and sequentially arranged on the two sides of the membrane electrode; wherein the two side end plates are respectively provided with a feed inlet and a discharge outlet, and the feed inlets at the two sides are respectively communicated with the humidifying module; wherein the end plates on the two sides are provided with heating devices which are heating rods arranged in the end plates; the back pressure valve is arranged on the end plate discharge port pipeline, the internal pressure of the fuel cell can be adjusted through the knob, and the outlet pipeline can be further provided with a pressure gauge for measuring the pressure at the outlet of the gas diffusion electrode testing device. The thermocouple is further arranged in any end plate on two sides and is fixed in any end plate through a screw, the heating device, the thermocouple and the temperature control instrument are connected through a circuit, and PID adjustment of the temperature of the gas diffusion electrode testing device is achieved through a temperature control meter inside the temperature control instrument.
As shown in fig. 2, the humidifying module comprises water storage tanks, wherein the water storage tanks are respectively fixed on the outer side surfaces of the end plates at two sides, and a one-way filling valve is arranged at the upper end of each water storage tank and used for filling deionized water; the lower end is provided with an air inlet, and the feed inlet of the end plate is arranged at the opposite angle of the feed inlet of the water storage tank, so that the inner cavity of the water storage tank is communicated with the feed inlet of the end plate. In the use process, water in the water storage tank can be heated through the heating device on the end plate, and the introduced air/hydrogen enters the gas diffusion electrode after the humidification process is completed through hot water, so that the humidification function of the gas diffusion electrode of the fuel cell is realized. The water storage tank also comprises a visual liquid level meter which is convenient for detecting the liquid level in the water storage tank. The upper end of the water storage tank is also provided with a pressure gauge so as to monitor the inlet pressure of the gas diffusion electrode testing device.
Example 2:
a testing device for a gas diffusion electrode of a fuel cell comprises a membrane electrode, and a graphite polar plate, a current collecting plate, an end plate and a humidifying module which are symmetrically and sequentially arranged on the two sides of the membrane electrode; wherein the two side end plates are respectively provided with a feed inlet and a discharge outlet, and the feed inlets at the two sides are respectively communicated with the humidifying module; wherein the end plates on the two sides are provided with heating devices which are heating rods arranged in the end plates; the back pressure valve is arranged on the end plate discharge port pipeline, the internal pressure of the fuel cell can be adjusted through the knob, and the outlet pipeline can be further provided with a pressure gauge for measuring the pressure at the outlet of the gas diffusion electrode testing device. The thermocouple is further arranged in any end plate on two sides and is fixed in any end plate through a screw, the heating device, the thermocouple and the temperature control instrument are connected through a circuit, and PID adjustment of the temperature of the gas diffusion electrode testing device is achieved through a temperature control meter inside the temperature control instrument.
As shown in fig. 3, the humidification module includes a reservoir and a make-up chamber separated by a perfluorosulfonic acid resin membrane; wherein the lower end of the liquid storage cavity is provided with an air inlet, and the upper end of the liquid storage cavity is communicated with the feed inlet of the end plate; the water supplementing cavity consists of a water supplementing monopole plate, a flow field of the monopole plate is contacted with the perfluorinated sulfonic acid resin membrane, and a liquid inlet end and a liquid outlet end of the pole plate are connected with external circulating water.
Example 3:
a testing device for a gas diffusion electrode of a fuel cell comprises a membrane electrode, and a graphite polar plate, a current collecting plate, an end plate and a humidifying module which are symmetrically and sequentially arranged on the two sides of the membrane electrode; wherein the two side end plates are respectively provided with a feed inlet and a discharge outlet, and the feed inlets at the two sides are respectively communicated with the humidifying module; wherein the end plates on the two sides are provided with heating devices which are heating rods arranged in the end plates; the back pressure valve is arranged on the end plate discharge port pipeline, the internal pressure of the fuel cell can be adjusted through the knob, and the outlet pipeline can be further provided with a pressure gauge for measuring the pressure at the outlet of the body diffusion electrode testing device. The thermocouple is further arranged in any end plate on two sides and is fixed in any end plate through a screw, the heating device, the thermocouple and the temperature control instrument are connected through a circuit, and PID adjustment of the temperature of the gas diffusion electrode testing device is achieved through a temperature control meter inside the temperature control instrument.
As shown in FIG. 4, the humidifying module comprises a humidifying tank and a temperature controller, wherein the humidifying tank consists of a stainless steel tank body, a flange sealing cover, a pressure gauge, a heating sleeve, a one-way filling valve, an air inlet and an air outlet, the heating sleeve is connected with the temperature controller, the air inlet is arranged at the lower end of the humidifying tank, the one-way filling valve and the air outlet are arranged at the upper end of the humidifying tank, and the air outlet is communicated with a feed inlet of the end plate. After passing through the air inlet interface, the air is changed into saturated steam at a certain temperature through the humidifying pot and then enters the body diffusion electrode, so that the temperature and humidity adjustment at normal temperature and humidity of 100 ℃ and RH100% is realized.
Claims (10)
1. A fuel cell gas diffusion electrode testing device, characterized in that: the membrane electrode comprises a sealing gasket, a polar plate, a current collecting plate, an end plate and a humidifying module which are symmetrically and sequentially arranged in the two side directions; wherein the two side end plates are respectively provided with a feed inlet and a discharge outlet, and the feed inlets at the two sides are respectively communicated with the humidifying module;
wherein the two side end plates are provided with heating devices;
and a back pressure valve is arranged on the pipeline of the discharge hole of the end plate.
2. A fuel cell gas diffusion electrode testing apparatus according to claim 1, wherein: the humidifying module comprises water storage tanks, the water storage tanks are respectively fixed on the outer side faces of end plates on two sides, a one-way filling valve is arranged at the upper end of each water storage tank, an air inlet is arranged at the lower end of each water storage tank, and the feed inlets of the end plates are arranged at opposite angles of the feed inlets of the water storage tanks, so that inner cavities of the water storage tanks are communicated with the feed inlets of the end plates.
3. A fuel cell gas diffusion electrode testing apparatus according to claim 2, wherein: the water storage tank also comprises a visual liquid level meter.
4. A fuel cell gas diffusion electrode testing apparatus according to claim 2, wherein: the upper end of the water storage tank is also provided with a pressure gauge.
5. A fuel cell gas diffusion electrode testing apparatus according to claim 1, wherein: the humidifying module comprises a liquid storage cavity and a water supplementing cavity which are separated by a perfluorinated sulfonic acid resin film; wherein the lower end of the liquid storage cavity is provided with an air inlet, and the upper end of the liquid storage cavity is communicated with the feed inlet of the end plate; the water supplementing cavity consists of a water supplementing monopole plate, a flow field of the monopole plate is contacted with the perfluorinated sulfonic acid resin membrane, and a liquid inlet end and a liquid outlet end of the pole plate are connected with external circulating water.
6. A fuel cell gas diffusion electrode testing apparatus according to claim 1, wherein: the humidifying module comprises a humidifying tank and a temperature controller, wherein the humidifying tank is provided with a heating sleeve connected with the temperature controller and a one-way filling valve, the lower end of the humidifying tank is provided with an air inlet, and the upper end of the humidifying tank is provided with an air outlet which is communicated with the end plate feed inlet.
7. A fuel cell gas diffusion electrode testing apparatus according to claim 6, wherein: the humidifying pot also comprises a liquid level meter and a pressure gauge.
8. A fuel cell gas diffusion electrode testing apparatus according to any one of claims 1 to 7, wherein: a thermocouple is further arranged in any end plate on two sides, and the thermocouple and the heating device are connected with an external temperature controller.
9. A fuel cell gas diffusion electrode testing apparatus according to claim 8, wherein: and a pressure gauge is further arranged on the discharge hole pipeline of the end plate.
10. A fuel cell gas diffusion electrode testing apparatus according to claim 9, wherein: the heating device is a heating rod arranged in the end plate or a heating sheet arranged outside the end plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220743782.8U CN219419108U (en) | 2022-04-01 | 2022-04-01 | Fuel cell gas diffusion electrode testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220743782.8U CN219419108U (en) | 2022-04-01 | 2022-04-01 | Fuel cell gas diffusion electrode testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219419108U true CN219419108U (en) | 2023-07-25 |
Family
ID=87234485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220743782.8U Active CN219419108U (en) | 2022-04-01 | 2022-04-01 | Fuel cell gas diffusion electrode testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219419108U (en) |
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2022
- 2022-04-01 CN CN202220743782.8U patent/CN219419108U/en active Active
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