CN219142155U - Proton exchange membrane fuel cell bipolar plate air tightness detection device - Google Patents
Proton exchange membrane fuel cell bipolar plate air tightness detection device Download PDFInfo
- Publication number
- CN219142155U CN219142155U CN202320009374.4U CN202320009374U CN219142155U CN 219142155 U CN219142155 U CN 219142155U CN 202320009374 U CN202320009374 U CN 202320009374U CN 219142155 U CN219142155 U CN 219142155U
- Authority
- CN
- China
- Prior art keywords
- cavity
- plate
- bipolar plate
- sliding
- tightness detection
- 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.)
- Active
Links
Images
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 application relates to a bipolar plate air tightness detection device of a proton exchange membrane fuel cell, which is applied to the field of fuel cells and comprises a material taking and feeding unit, an air tightness detection table, an air source unit, a detection unit and a control unit; a positioning mechanism is arranged on the lower sealing plate of the air tightness detection table; the middle part in the lower sealing plate is provided with a reset cavity which is communicated with a first air source, the periphery in the lower sealing plate is provided with a pushing cavity which is communicated with a second air source; the periphery of the reset cavity is communicated with the pushing cavity respectively, the sliding cavity penetrates through the top wall of the lower sealing plate, the positioning mechanism is a positioning plate sliding in each sliding cavity, and the positioning plate protrudes out of the top wall of the lower sealing plate; and a sealing component is arranged between the two sides of the positioning plate and the inner wall of the sliding cavity. The positioning device has the effect that the positioning of the bipolar plate can be realized, so that the placement position of the bipolar plate on the lower sealing plate is not deviated.
Description
Technical Field
The application relates to the field of fuel cells, in particular to a bipolar plate air tightness detection device of a proton exchange membrane fuel cell.
Background
The proton exchange membrane fuel cell mainly comprises a proton exchange membrane, a catalyst layer, a gas diffusion layer and a bipolar plate. The proton exchange membrane plays multiple roles of conducting protons (H+), preventing electron transfer and isolating cathode and anode reactions; the catalyst layer is a place where the fuel and the oxidant perform electrochemical reaction; the main functions of the gas diffusion layer are to support the catalyst layer, stabilize the electrode structure, provide a gas transmission channel and improve water management; the bipolar plate has the main functions of separating the reaction gas, guiding the reaction gas into the fuel cell through the flow field, collecting and conducting current, supporting the membrane electrode and bearing the heat dissipation and drainage functions of the whole fuel cell.
The tightness of bipolar plates of proton exchange membrane fuel cells is one of the important factors for evaluating the safety of the cells. The hydrogen cavity, the oxygen cavity and the cooling water cavity are arranged in the bipolar plate, the air tightness of the cavities is required to be detected, compressed air is respectively introduced into the hydrogen cavity, the oxygen cavity and the cooling water cavity and then is sealed, and the gas pressure change value is measured after the pressure is maintained for a certain time, so that whether the air tightness of the bipolar plate meets the standard is judged.
Chinese patent publication No. CN210037100U discloses a bipolar plate air tightness detection system of proton exchange membrane fuel cell, comprising: and a material taking and feeding unit: the device is provided with a sponge pneumatic sucker for sucking the bipolar plate to be detected and a feeding mechanism for driving the sponge pneumatic sucker to move; air tightness detection table: the device is provided with an upper sealing plate and a lower sealing plate for clamping the bipolar plate to be detected and a compression cylinder for driving the upper sealing plate to lift; and an air source unit: the device comprises an air source treatment duplex member connected with an air compressor, wherein an outlet of the air source treatment duplex member is divided into two paths, one path is connected with a compression cylinder, and the other path is communicated with a hydrogen cavity, an oxygen cavity and a cooling water cavity of a bipolar plate to be detected; and a detection unit: the device is connected with the hydrogen cavity, the oxygen cavity and the cooling water cavity of the bipolar plate to be detected and is used for detecting the air pressure in the hydrogen cavity, the oxygen cavity and the cooling water cavity of the bipolar plate to be detected; the control unit is connected with the material taking and feeding unit and used for controlling the operation of the material taking and feeding unit, and meanwhile, the control unit is connected with the air source unit and used for controlling the air source unit, the compression cylinder and the air passage opening and closing and air flow of the bipolar plate to be detected.
When the tightness of the bipolar plate is detected, the bipolar plate is placed on a bipolar plate placing table to be detected, a material taking and feeding unit adsorbs the bipolar plate, the bipolar plate is placed on a lower sealing plate, the positions of a bipolar plate hydrogen cavity, an oxygen cavity and a cooling water cavity correspond to the positions of air holes on the lower sealing plate, a compacting cylinder drives an upper sealing plate to move downwards to compact the bipolar plate, a bypass valve and an oxygen cavity air inlet control electromagnetic valve are opened, a hydrogen cavity air inlet control electromagnetic valve and a cooling water cavity air inlet control electromagnetic valve are closed, compressed air is filled into the bipolar plate oxygen cavity and kept for a set time, a pressure sensor detects the air pressure in the oxygen cavity, if the air pressure fluctuation exceeds a set value, the oxygen cavity air inlet control electromagnetic valve is closed, the compacting cylinder drives an upper sealing plate to move upwards, the material taking and feeding unit places the bipolar plate on a defective product placing table, and the tightness of the hydrogen cavity and the cooling water cavity is detected according to the steps, and if the air pressure fluctuation of the hydrogen cavity and the cooling water cavity exceeds the set value, the bipolar plate is also a defective product; if the air pressure fluctuation values of the oxygen cavity, the hydrogen cavity and the cooling water cavity are sequentially detected to be smaller than the set value, the air tightness of the bipolar plate meets the requirement, and the material taking and feeding unit places the bipolar plate on a qualified product placing table.
However, when the material taking and feeding unit adsorbs the bipolar plate, the position of the bipolar plate may deviate in the process of placing the bipolar plate on the lower sealing plate, so that it is difficult to ensure that the positions of the hydrogen cavity, the oxygen cavity and the cooling water cavity of the bipolar plate accurately correspond to the positions of the air holes of the lower sealing plate.
Disclosure of Invention
In order to improve the defect that the placement position of the bipolar plate may be offset, the application provides a bipolar plate air tightness detection device of a proton exchange membrane fuel cell.
The proton exchange membrane fuel cell bipolar plate air tightness detection device provided by the application adopts the following technical scheme:
the proton exchange membrane fuel cell bipolar plate air tightness detection device comprises a material taking and feeding unit, an air tightness detection table, an air source unit, a detection unit and a control unit;
a positioning mechanism is arranged on the lower sealing plate of the air tightness detection table;
the middle part in the lower sealing plate is provided with a reset cavity which is communicated with a first air source, the periphery in the lower sealing plate is provided with a pushing cavity which is communicated with a second air source;
the periphery of the reset cavity is communicated with the pushing cavity respectively, the sliding cavity penetrates through the top wall of the lower sealing plate, the positioning mechanism is a positioning plate sliding in each sliding cavity, and the positioning plate protrudes out of the top wall of the lower sealing plate;
and a sealing component is arranged between the two sides of the positioning plate and the inner wall of the inter-sliding cavity.
By adopting the technical scheme, the reset cavity is communicated with the first air source, and the pushing cavity is communicated with the second air source. And after the bipolar plate is placed on the lower sealing plate, the second air source works firstly, compressed air is blown into the pushing cavity, the compressed air can push each positioning plate to move towards the bipolar plate at the same time, positioning of the bipolar plate is achieved, the positions of the hydrogen cavity, the oxygen cavity and the cooling cavity of the bipolar plate correspond to the positions of each air hole of the lower sealing plate accurately, then the second air source stops working, air pressure in the pushing cavity is released, the first air source works, compressed air is blown into the resetting cavity, and the compressed air can push each positioning plate to move towards a direction away from the bipolar plate at the same time, so that resetting of each positioning plate is achieved.
Optionally, the locating plate includes sliding part and locating part, sliding part adaptation slide in the intracavity that slides, the locating part with the roof of lower closing plate pastes mutually, the length of locating part is greater than the length of sliding part.
By adopting the technical scheme, the sliding part is slidably arranged in the sliding cavity, and the shifting is realized under the alternate pushing of compressed air in the pushing cavity and the resetting cavity, so that the positioning part is driven to realize the shifting.
Optionally, the height of the positioning part is smaller than the thickness of the bipolar plate to be detected.
Through adopting above-mentioned technical scheme, design the highly being less than of locating part waits to detect bipolar plate's thickness for make things convenient for the upper seal plate to compress tightly bipolar plate for the locating plate does not cause the interference to the upper seal plate.
Optionally, the sliding part is provided with a limiting part integrally, the inner wall of the sliding cavity is provided with a limiting groove, and the limiting part is adapted to slide in the limiting groove.
Through adopting above-mentioned technical scheme, set up spacing portion and spacing groove and can make the locating plate stably slide the intracavity reciprocal aversion, prevent that the locating plate from falling out the chamber of sliding.
Optionally, the seal assembly is flexible cover, flexible cover's one end with the locating plate is connected, flexible cover's the other end with the inner wall in chamber of sliding is connected.
By adopting the technical scheme, the flexible telescopic cover can realize the sealing between the positioning plate and the inner wall of the sliding cavity, and reduce the leakage of compressed air in the pushing cavity and the resetting cavity.
Optionally, two sides of the flexible telescopic cover are clung to the side wall of the sliding cavity.
Through adopting above-mentioned technical scheme, the both sides of flexible cover are hugged closely in the lateral wall in chamber of sliding, can promote the sealed effect of flexible cover.
Optionally, a boosting cavity is arranged in the middle of the lower sealing plate, the boosting cavity is arranged below the reset cavity, a circulation cavity is respectively communicated between the periphery of the boosting cavity and the pushing cavity, and the second air source is communicated with the boosting cavity.
Through adopting above-mentioned technical scheme, set up the circulation chamber that boost chamber and make boost chamber and pushing the chamber intercommunication, can make the compressed air who passes the intracavity by the two drums of origin keep as far as possible even to can keep synchronous and the same dynamics remove to promote the locating plate, make the locating plate better fix a position bipolar plate.
Optionally, the first air source is communicated with the middle part of the reset cavity, and the second air source is communicated with the middle part of the boosting cavity.
Through adopting above-mentioned technical scheme, with air supply one communicate in reset cavity's middle part and air supply two communicate in the middle part of boosting cavity, can make compressed air go to promote each locating plate as far as possible more evenly and realize shifting.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the material taking and feeding unit is used for placing the bipolar plate on the lower sealing plate, the second air source works firstly, compressed air is blown into the pushing cavity, the compressed air pushes the positioning plates to move towards the bipolar plate, positioning of the bipolar plate is achieved, the positions of the hydrogen cavity, the oxygen cavity and the cooling cavity of the bipolar plate are accurately corresponding to the positions of the air holes of the lower sealing plate, then the second air source stops working, air pressure in the pushing cavity is released, the first air source works, compressed air is blown into the resetting cavity, and the compressed air pushes the positioning plates to move towards a direction away from the bipolar plate, so that resetting of the positioning plates is achieved;
2. the flexible telescopic cover can realize the sealing between the locating plate and the inner wall of the sliding cavity, and the leakage of compressed air in the pushing cavity and the resetting cavity is reduced.
Drawings
Fig. 1 is a schematic diagram of a bipolar plate tightness detection device of a proton exchange membrane fuel cell in an embodiment of the application.
FIG. 2 is a top view of a lower seal plate and positioning mechanism in an embodiment of the present application.
FIG. 3 is a cross-sectional view of a lower seal plate and positioning mechanism in an embodiment of the present application.
Fig. 4 is a schematic view of a locating plate in an embodiment of the present application.
Reference numerals: 1. a material taking and feeding unit; 2. an air tightness detection table; 3. a lower sealing plate; 31. a reset chamber; 32. a pushing cavity; 33. a sliding cavity; 34. a boost cavity; 35. a flow-through chamber; 4. a positioning mechanism; 41. a positioning plate; 411. a sliding part; 412. a positioning part; 413. a limit part; 5. a seal assembly; 51. a flexible telescoping shield; 6. and a control box.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a bipolar plate air tightness detection device of a proton exchange membrane fuel cell. Referring to fig. 1, the proton exchange membrane fuel cell bipolar plate air tightness detection device includes a material taking and feeding unit 1, an air tightness detection table 2, an air source unit, a detection unit and a control unit (the air source unit and the detection unit are all disposed in a control box 6, not shown in the figure, and the control unit is not shown in the figure), and since specific structures and connection relations of the material taking and feeding unit 1, the air tightness detection table 2, the air source unit, the detection unit and the control unit are disclosed in the prior art, detailed description is omitted, and since the material taking and feeding unit 1, the air tightness detection table 2, the air source unit, the detection unit and the control unit are combined with each other to realize the detection of the air tightness of the bipolar plate, the implementation principle of detecting the air tightness of the bipolar plate is disclosed in the prior art, and detailed description is omitted.
Referring to fig. 2, the improvement point of the present application is a lower sealing plate 3 provided on the airtight detecting table 2. Because the material taking and feeding unit 1 places the bipolar plate on the lower sealing plate 3, the positions of the bipolar plate may deviate, and it is difficult to ensure that the positions of the hydrogen cavity, the oxygen cavity and the cooling water cavity of the bipolar plate correspond to the positions of the air holes of the lower sealing plate 3, so that the lower sealing plate 3 is provided with the positioning mechanism 4, and the positioning mechanism 4 can position the bipolar plate, so that the positions of the hydrogen cavity, the oxygen cavity and the cooling water cavity of the bipolar plate correspond to the positions of the air holes of the lower sealing plate 3.
Referring to fig. 3 and 4, the positioning mechanism 4 includes four positioning plates 41, each positioning plate 41 is composed of a positioning portion 412, a sliding portion 411 and a limiting portion 413, the positioning portion 412 is integrally formed at the top of the sliding portion 411, the positioning portion 412 is perpendicular to the sliding portion 411, the length of the positioning portion 412 is greater than that of the sliding portion 411, the limiting portion 413 is integrally formed at the side portion of the sliding portion 411, and the limiting portion 413 is also perpendicular to the sliding portion 411.
A reset cavity 31 is integrally formed at the center of the inside of the lower sealing plate 3, the reset cavity 31 is a rectangular cavity coaxial with the lower sealing plate 3, a first air source is connected to the center of the bottom wall of the reset cavity 31, and the first air source can blow compressed air into the reset cavity 31. A continuous annular pushing cavity 32 is integrally formed around the inside of the lower sealing plate 3, the pushing cavity 32 is concentric with the lower sealing plate 3, a boosting cavity 34 is integrally formed below the reset cavity 31 at the center of the inside of the lower sealing plate 3, the boosting cavity 34 is also a rectangular cavity concentric with the lower sealing plate 3, a second air source is communicated at the center of the bottom wall of the boosting cavity 34, compressed air can be blown into the boosting cavity 34 by the second air source, and a circulation cavity 35 is respectively communicated between the periphery of the boosting cavity 34 and the pushing cavity 32, so that the compressed air blown into the boosting cavity 34 can be continuously blown into the pushing cavity 32. The first air source and the second air source can be compressed air machines.
A sliding cavity 33 is respectively communicated between the periphery of the reset cavity 31 and the pushing cavity 32 in the lower sealing plate 3, the sliding cavity 33 penetrates through the top wall of the lower sealing plate 3 upwards, and a positioning plate 41 is arranged corresponding to one sliding cavity 33. Specifically, the sliding portion 411 is adapted to slide in the sliding cavity 33, a limit groove is integrally formed on a side wall of the sliding cavity 33, the limit portion 413 is adapted to slide in the limit groove, so that the whole positioning plate 41 can stably slide in the sliding cavity 33, the positioning portion 412 is located outside the sliding cavity 33, the positioning portion 412 is attached to a top wall of the lower sealing plate 3, and the sliding portion 411 drives the positioning portion 412 to move, so that positioning of the bipolar plate can be achieved. In addition, the height of the positioning portion 412 is designed to be smaller than the thickness of the bipolar plate to be inspected so that the upper sealing plate of the airtight detecting table 2 can completely press the bipolar plate.
Referring to fig. 3, after the material taking and feeding unit 1 places the bipolar plate on the lower sealing plate 3, the second air source works first, compressed air is blown into the boosting cavity 34 and the pushing cavity 32, the compressed air can push the four positioning plates 41 to move towards the bipolar plate at the same time, so as to position the bipolar plate, the positions of the hydrogen cavity, the oxygen cavity and the cooling water cavity of the bipolar plate accurately correspond to the positions of the air holes of the lower sealing plate 3, and then the second air source stops working, and the air pressure in the boosting cavity 34 and the pushing cavity 32 is released; when the air source starts to work, compressed air is blown into the reset cavity 31, and the compressed air can push the four positioning plates 41 to move in the direction away from the bipolar plates at the same time, so that the reset of the four positioning plates 41 is realized.
Referring to fig. 3, in order to reduce the leakage of compressed air in the sliding chamber 33, a sealing assembly 5 is provided between both sides of the sliding portion 411 and the inner wall of the sliding chamber 33, the sealing assembly 5 is a flexible expansion cover 51, the flexible expansion cover 51 is made of rubber and has a corrugated structure, and the sealing effect can be ensured while being adapted to the movement of the positioning plate 41. One end of the flexible telescopic cover 51 is fixed on the sliding part 411, the other end is fixed on the inner wall of the sliding cavity 33, and two sides of the flexible telescopic cover 51 are tightly attached to the side wall of the sliding cavity 33, so that the sealing between the sliding part 411 and the inner wall of the sliding cavity 33 can be realized, and the condition that compressed air leaks out of the pushing cavity 32 and the resetting cavity 31 is reduced.
The implementation principle of the bipolar plate air tightness detection device of the proton exchange membrane fuel cell in the embodiment of the application is as follows: when the material taking and feeding unit 1 places the bipolar plate on the lower sealing plate 3, the second air source works first, compressed air is blown into the boosting cavity 34 and the pushing cavity 32, the compressed air can push the four positioning plates 41 to move towards the bipolar plate at the same time, positioning of the bipolar plate is achieved, the positions of the hydrogen cavity, the oxygen cavity and the cooling cavity of the bipolar plate are accurately corresponding to the positions of the air holes of the lower sealing plate 3, and then the second air source stops working, and air pressure in the boosting cavity 34 and the pushing cavity 32 is released; when the air source starts to work, compressed air is blown into the reset cavity 31, and the compressed air can push the four positioning plates 41 to move in the direction away from the bipolar plates at the same time, so that the reset of the four positioning plates 41 is realized.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The proton exchange membrane fuel cell bipolar plate air tightness detection device is characterized by comprising a material taking and feeding unit (1), an air tightness detection table (2), an air source unit, a detection unit and a control unit;
a positioning mechanism (4) is arranged on the lower sealing plate (3) of the air tightness detection table (2);
a reset cavity (31) is arranged in the middle of the inner part of the lower sealing plate (3), the reset cavity (31) is communicated with a first air source, a pushing cavity (32) is arranged on the periphery of the inner part of the lower sealing plate (3), and the pushing cavity (32) is communicated with a second air source;
a sliding cavity (33) is respectively communicated between the periphery of the reset cavity (31) and the pushing cavity (32), the sliding cavity (33) penetrates through the top wall of the lower sealing plate (3), the positioning mechanism (4) is a positioning plate (41) sliding in each sliding cavity (33), and the positioning plate (41) protrudes out of the top wall of the lower sealing plate (3);
and a sealing component (5) is arranged between the two sides of the positioning plate (41) and the inner wall of the sliding cavity (33).
2. The proton exchange membrane fuel cell bipolar plate air tightness detection device according to claim 1, wherein: the locating plate (41) comprises a sliding part (411) and a locating part (412), the sliding part (411) is adapted to slide in the sliding cavity (33), the locating part (412) is attached to the top wall of the lower sealing plate (3), and the length of the locating part (412) is greater than that of the sliding part (411).
3. The proton exchange membrane fuel cell bipolar plate air tightness detection device according to claim 2, wherein: the height of the positioning part (412) is smaller than the thickness of the bipolar plate to be detected.
4. The proton exchange membrane fuel cell bipolar plate air tightness detection device according to claim 2, wherein: the sliding part (411) is integrally provided with a limiting part (413), the inner wall of the sliding cavity (33) is provided with a limiting groove, and the limiting part (413) is adapted to slide in the limiting groove.
5. The proton exchange membrane fuel cell bipolar plate air tightness detection device according to claim 1, wherein: the sealing assembly (5) is a flexible telescopic cover (51), one end of the flexible telescopic cover (51) is connected with the positioning plate (41), and the other end of the flexible telescopic cover (51) is connected with the inner wall of the sliding cavity (33).
6. The proton exchange membrane fuel cell bipolar plate air tightness detection device according to claim 5, wherein: the two sides of the flexible telescopic cover (51) are clung to the side wall of the sliding cavity (33).
7. The proton exchange membrane fuel cell bipolar plate air tightness detection device according to claim 1, wherein: the middle part is equipped with a boosting chamber (34) in lower closing plate (3), should boost chamber (34) are located the below in return chamber (31), this boosting chamber (34) all around with pass between chamber (32) respectively communicate a circulation chamber (35), air supply two with boost chamber (34) intercommunication.
8. The proton exchange membrane fuel cell bipolar plate air tightness detection device according to claim 7, wherein: the first air source is communicated with the middle part of the reset cavity (31), and the second air source is communicated with the middle part of the boosting cavity (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320009374.4U CN219142155U (en) | 2023-01-03 | 2023-01-03 | Proton exchange membrane fuel cell bipolar plate air tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320009374.4U CN219142155U (en) | 2023-01-03 | 2023-01-03 | Proton exchange membrane fuel cell bipolar plate air tightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219142155U true CN219142155U (en) | 2023-06-06 |
Family
ID=86567561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320009374.4U Active CN219142155U (en) | 2023-01-03 | 2023-01-03 | Proton exchange membrane fuel cell bipolar plate air tightness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219142155U (en) |
-
2023
- 2023-01-03 CN CN202320009374.4U patent/CN219142155U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109781360B (en) | Device and method for detecting tightness of fuel cell membrane electrode | |
| CN110954275A (en) | Device and method for detecting sealing performance of sealing cover of lithium battery | |
| CA2753450C (en) | Compression arrangement for fuel or electrolysis cells in a fuel cell stack or an electrolysis cell stack | |
| KR20090062111A (en) | Airtight test apparatus for fuel cell stack | |
| CN111006967A (en) | Clamp for detecting compactness of fuel cell bipolar plate | |
| CN219142155U (en) | Proton exchange membrane fuel cell bipolar plate air tightness detection device | |
| CN209589355U (en) | A kind of bipolar blade unit air-tightness detection device of hydrogen fuel cell | |
| KR100986484B1 (en) | Automatic stacking system for fuel cell stack and method thereof | |
| US20030118882A1 (en) | Fuel cell system for operation at pressures below the pressure of the surrounding environment and method of operation thereof | |
| CN213396551U (en) | Electric pile heating furnace for fuel cell testing equipment and testing equipment | |
| CN211452749U (en) | Lithium battery sealing cover sealing performance detection device | |
| KR101550928B1 (en) | Fuel cell stack having enclosure | |
| KR100957367B1 (en) | Automatic airtight testing system for fuel cell stack and method thereof | |
| CN116169336B (en) | Fuel cell stack and assembly pressure adjusting method and device thereof | |
| CN219170642U (en) | Fuel cell gas tightness detects anchor clamps | |
| CN217542298U (en) | Air tightness test equipment for fuel cell polar plate and membrane electrode | |
| CN112985708A (en) | Gas tightness check out test set of fuel cell bipolar plate | |
| CN114964659A (en) | Air tightness testing device for polar plate and membrane electrode of fuel cell | |
| KR101197596B1 (en) | Gasket and fuel cell having the same | |
| CN211425779U (en) | Defect detection device for hydrogen fuel cell membrane electrode assembly | |
| KR20120059445A (en) | Fuel cell system manifold seal | |
| CN218239218U (en) | Double-pole plate helium detection tool | |
| CN218765847U (en) | Battery case gas tightness leak hunting device | |
| CN221099990U (en) | Flat plate type solid oxide fuel cell leakage point detection device | |
| CN113804375B (en) | Fuel cell air tightness detection device and detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |