CN210089952U - Air tightness testing device for membrane electrode of proton exchange membrane fuel cell - Google Patents
Air tightness testing device for membrane electrode of proton exchange membrane fuel cell Download PDFInfo
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- CN210089952U CN210089952U CN201920911290.3U CN201920911290U CN210089952U CN 210089952 U CN210089952 U CN 210089952U CN 201920911290 U CN201920911290 U CN 201920911290U CN 210089952 U CN210089952 U CN 210089952U
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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
- 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
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Abstract
The utility model discloses a proton exchange membrane fuel cell membrane electrode air tightness testing device, belonging to the technical field of fuel cells, comprising a hydraulic cylinder, an upper pressure plate, a lower pressure plate, an upper cover plate, a side guard plate and a lower support plate; the upper cover plate, the lower support plate and the two side guard plates are welded into a whole to form a square frame body, the hydraulic cylinder is fixed on the upper cover plate, the upper pressing plate and the lower pressing plate are both positioned in the square frame body, the upper pressing plate is connected with the hydraulic cylinder through a piston rod, and the lower pressing plate is fixed on the lower support plate; the side surface of the upper pressure plate is connected with an air inlet pipeline, and the air inlet pipeline is connected with a pressure gauge and a switch valve; the side surface of the lower pressing plate is connected with an air outlet pipeline, and a precise gas mass flowmeter and a switch valve are connected to the air outlet pipeline; the device clamps the membrane electrode between the upper pressure plate and the lower pressure plate, and effectively supports the membrane electrode through the membrane electrode supporting plate, thereby avoiding the damage of the membrane electrode in the test.
Description
Technical Field
The utility model belongs to the technical field of fuel cell, concretely relates to proton exchange membrane fuel cell membrane electrode gas tightness testing arrangement.
Background
The proton exchange membrane fuel cell as a novel clean energy conversion device has the advantages of high energy efficiency, high power density, quick start, quiet operation, zero pollution, short filling time and the like, and can play a great role in a plurality of fields such as future trips, standby power supply, movable power supplies and the like.
The Membrane Electrode Assembly (MEA) is the heart of a proton exchange membrane fuel cell, where redox reactions occur, and is the source of current output. The membrane electrode is composed of gas diffusion layers, catalyst layers and a middle proton exchange membrane on two sides, oxygen reduction and hydrogen oxidation are respectively carried out on the cathode catalyst layer and the anode catalyst layer, proton conduction required in the reaction process is realized by the middle proton exchange membrane, electrons are conducted through an external circuit to generate current, so that the membrane electrode is required to completely separate the hydrogen from the oxygen, the phenomenon of gas channeling is strictly forbidden, once the gas channeling occurs, the performance of a single cell is seriously influenced until the gas channeling reaches the whole fuel cell stack, and the risk of deflagration of the hydrogen-oxygen mixed gas is greatly increased.
The air tightness of the membrane electrode assembly is mainly influenced by the product quality of the proton exchange membrane and the physical damage to the proton exchange membrane in the membrane electrode preparation process. Physical damage in the membrane electrode preparation process is easy to occur and cannot be detected by naked eyes. In the prior art, the air tightness testing device for the bipolar plate and the galvanic pile is adopted, and relevant patents of membrane electrode air tightness detection are not retrieved.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned defect that exists among the prior art, the utility model aims to provide a proton exchange membrane fuel cell membrane electrode gas tightness testing arrangement can be fast, safe, effectual test membrane electrode assembly's gas tightness.
The utility model discloses a following technical scheme realizes:
a proton exchange membrane fuel cell membrane electrode air tightness testing device comprises a hydraulic cylinder 1, an upper pressure plate 2, a lower pressure plate 3, a pressure gauge 4, a precise gas mass flowmeter 6, a switch valve 8, an upper cover plate 9, a side guard plate 10 and a lower support plate 11; the upper cover plate 9, the lower support plate 11 and the two side guard plates 10 are welded into a whole to form a square frame body, the hydraulic cylinder 1 is fixed on the upper cover plate 9, the upper pressure plate 2 and the lower pressure plate 3 are both positioned in the square frame body, and two ends of the upper pressure plate and the lower pressure plate are respectively fixedly connected with the two side guard plates 10; the upper pressure plate 2 is connected with the hydraulic cylinder 1 through a piston rod 12, and the lower pressure plate 3 is fixed on the lower supporting plate 11; the side surface of the upper pressure plate 2 is connected with an air inlet pipeline 5, and the air inlet pipeline 5 is connected with a pressure gauge 4 and a switch valve 8; the side of the lower pressing plate 3 is connected with an air outlet pipeline 7, and the air outlet pipeline 7 is connected with a precise gas mass flowmeter 6 and a switch valve 8.
Further, the upper press plate 2 and the lower press plate 3 are both hollow cavities, the air inlet pipeline 5 is connected with the hollow cavity of the upper press plate 2, and the air outlet pipeline 7 is connected with the hollow cavity of the lower press plate 3.
Further, a membrane electrode supporting plate 32 is arranged on the upper surface of the lower pressing plate 3, through holes are uniformly arranged on the membrane electrode supporting plate 32, and the aperture of each through hole is smaller than or equal to 2 mm.
Further, an upper press plate sealing ring 21 is arranged on the lower surface of the upper press plate 2, and a lower press plate sealing ring 31 is arranged between the upper surface of the lower press plate 3 and the membrane electrode supporting plate 32.
Compared with the prior art, the utility model has the advantages as follows:
(1) the air tightness testing device of the utility model clamps the membrane electrode between the upper pressing plate and the lower pressing plate, and effectively supports the membrane electrode through the membrane electrode supporting plate, thereby avoiding the damage of the membrane electrode in the test;
(2) the device is simple and convenient to disassemble and assemble and easy to operate, can be used for sample piece testing in a laboratory, and meets the requirement of mass production operation;
(3) the device can meet the air tightness test of different membrane electrode assemblies by customizing the upper pressing plate and the lower pressing plate with different shapes.
Drawings
Fig. 1 is a schematic structural diagram of a device for testing the air tightness of a membrane electrode of a proton exchange membrane fuel cell according to the present invention;
FIG. 2 is a side view of the device for testing the air tightness of the membrane electrode of the PEMFC according to the present invention;
fig. 3 is a schematic structural view of an upper pressing plate and a lower pressing plate of the device for testing the air tightness of the membrane electrode of the proton exchange membrane fuel cell of the present invention;
in the figure: the device comprises a hydraulic cylinder 1, an upper pressure plate 2, a lower pressure plate 3, a pressure gauge 4, an air inlet pipeline 5, a precise gas mass flowmeter 6, an air outlet pipeline 7, a switch valve 8, an upper cover plate 9, a side guard plate 10, a lower support plate 11, a piston rod 12, an upper pressure plate sealing ring 21, a lower pressure plate sealing ring 31 and a membrane electrode supporting plate 32.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
A proton exchange membrane fuel cell membrane electrode air tightness testing device comprises a hydraulic cylinder 1, an upper pressure plate 2, a lower pressure plate 3, a pressure gauge 4, a precise gas mass flowmeter 6, a switch valve 8, an upper cover plate 9, a side guard plate 10 and a lower support plate 11; the upper cover plate 9, the lower support plate 11 and the two side guard plates 10 are welded into a whole to form a square frame body; the upper end of each side guard plate is vertically fixed with the upper cover plate, the lower end of each side guard plate is vertically fixed with the lower supporting plate, and the distance between the two side guard plates is greater than the width of the upper pressing plate and the width of the lower pressing plate; the hydraulic cylinder is a hydraulic actuating mechanism which converts hydraulic energy into mechanical energy and makes linear reciprocating motion and is fixed on the upper cover plate 9; the upper pressure plate 2 and the lower pressure plate 3 are both positioned in the square frame body, and two ends of the upper pressure plate and the lower pressure plate are respectively fixedly connected with the two side guard plates 10; the upper pressure plate 2 is connected with the hydraulic cylinder 1 through a piston rod 12, and the lower pressure plate 3 is fixed on the lower supporting plate 11; the side surface of the upper pressure plate 2 is connected with an air inlet pipeline 5, and the air inlet pipeline 5 is connected with a pressure gauge 4 and a switch valve 8; the side of the lower pressing plate 3 is connected with an air outlet pipeline 7, and the air outlet pipeline 7 is connected with a precise gas mass flowmeter 6 and a switch valve 8.
The upper pressing plate 2 and the lower pressing plate 3 are both hollow cavities, the air inlet pipeline 5 is connected with the hollow cavities of the upper pressing plate 2, and the air outlet pipeline 7 is connected with the hollow cavities of the lower pressing plate 3.
The membrane electrode supporting plate 32 is arranged on the upper surface of the lower pressing plate 3, through holes are uniformly arranged on the membrane electrode supporting plate 32, the aperture of each through hole is smaller than or equal to 2mm, and each square centimeter is not less than 4 through holes.
An upper press plate sealing ring 21 is arranged on the lower surface of the upper press plate 2, and a lower press plate sealing ring 31 is arranged between the upper surface of the lower press plate 3 and the membrane electrode supporting plate 32; the size of the sealing gasket is larger than that of the carbon paper and the catalytic layer on the membrane electrode.
During testing, the membrane electrode assembly to be tested is placed on the lower pressing plate, the proton exchange membrane or the plastic frame of the membrane electrode is arranged above the sealing washer, and the upper pressing plate is pressed downwards until the membrane electrode is clamped between the upper pressing plate and the lower pressing plate. Opening the pipeline valve of entering, closing out the pipeline valve of giving vent to anger, follow pipeline of entering and inject air or nitrogen gas into the top board cavity, observe the manometer registration, when reaching appointed test pressure, close the valve on the inlet line, open the valve of giving vent to anger the pipeline, observe the demonstration registration on the accurate gas mass flow meter, judge membrane electrode assembly's gas tightness condition.
Claims (4)
1. A proton exchange membrane fuel cell membrane electrode air tightness testing device is characterized by comprising a hydraulic cylinder (1), an upper pressure plate (2), a lower pressure plate (3), an upper cover plate (9), a side guard plate (10) and a lower support plate (11); the upper cover plate (9), the lower supporting plate (11) and the two side guard plates (10) are welded into a whole to form a square frame body, the hydraulic cylinder (1) is fixed on the upper cover plate (9), the upper pressing plate (2) and the lower pressing plate (3) are both positioned in the square frame body, and two ends of the upper pressing plate and the lower pressing plate are respectively fixedly connected with the two side guard plates (10); the upper pressure plate (2) is connected with the hydraulic cylinder (1) through a piston rod (12), and the lower pressure plate (3) is fixed on the lower supporting plate (11); the side surface of the upper pressure plate (2) is connected with an air inlet pipeline (5), and the air inlet pipeline (5) is connected with a pressure gauge (4) and a switch valve (8); the side of the lower pressing plate (3) is connected with an air outlet pipeline (7), and the air outlet pipeline (7) is connected with a precise gas mass flowmeter (6) and a switch valve (8).
2. The device for testing the air tightness of the membrane electrode of the proton exchange membrane fuel cell according to claim 1, wherein the upper pressure plate (2) and the lower pressure plate (3) are both hollow cavities, the air inlet pipeline (5) is connected with the hollow cavities of the upper pressure plate (2), and the air outlet pipeline (7) is connected with the hollow cavities of the lower pressure plate (3).
3. The device for testing the air tightness of the membrane electrode of the proton exchange membrane fuel cell according to claim 1, wherein the membrane electrode supporting plate (32) is arranged on the upper surface of the lower pressing plate (3), through holes are uniformly arranged on the membrane electrode supporting plate (32), and the aperture of each through hole is less than or equal to 2 mm.
4. The device for testing the air tightness of the membrane electrode of the proton exchange membrane fuel cell according to claim 1, wherein an upper pressure plate sealing ring (21) is arranged on the lower surface of the upper pressure plate (2), and a lower pressure plate sealing ring (31) is arranged between the upper surface of the lower pressure plate (3) and the membrane electrode supporting plate (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920911290.3U CN210089952U (en) | 2019-06-18 | 2019-06-18 | Air tightness testing device for membrane electrode of proton exchange membrane fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920911290.3U CN210089952U (en) | 2019-06-18 | 2019-06-18 | Air tightness testing device for membrane electrode of proton exchange membrane fuel cell |
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| CN210089952U true CN210089952U (en) | 2020-02-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636518A (en) * | 2020-12-15 | 2022-06-17 | 未势能源科技有限公司 | Membrane electrode airtightness testing mechanism and membrane electrode detection device |
| CN116973040A (en) * | 2023-09-22 | 2023-10-31 | 北京氢璞创能科技有限公司 | Fuel cell air tightness detection device |
-
2019
- 2019-06-18 CN CN201920911290.3U patent/CN210089952U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636518A (en) * | 2020-12-15 | 2022-06-17 | 未势能源科技有限公司 | Membrane electrode airtightness testing mechanism and membrane electrode detection device |
| CN116973040A (en) * | 2023-09-22 | 2023-10-31 | 北京氢璞创能科技有限公司 | Fuel cell air tightness detection device |
| CN116973040B (en) * | 2023-09-22 | 2024-01-16 | 北京氢璞创能科技有限公司 | Fuel cell air tightness detection device |
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