Test fixture and test apparatus

Abstract

The application provides a test tool and test equipment, and relates to the technical field of fuel cells. The test tool comprises a first clamping component, a second clamping component and a sealing structure. The first clamping component and the second clamping component are arranged along a first direction. The sealing structure surrounds the first clamping component and the second clamping component to enclose a sealed space. The sealing structure is provided with a first mounting channel. The first mounting channel is in communication with the sealed space, so that a flow channel assembly can be mounted into the sealed space through the first mounting channel. The technical problem of complex test process and process of the pole plate is solved.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and more specifically to testing fixtures and testing equipment. Background Technology

[0002] With the global economy developing and energy demand continuing to grow, the development of clean and sustainable energy technologies has become a global priority. Fuel cells can directly convert the chemical energy of fuel into electrical energy, and have advantages such as high efficiency, low pollution, and low noise. They are considered an important direction for future energy and have broad application prospects in transportation, power generation, and portable devices.

[0003] The plates of a fuel cell are responsible for gas distribution, electrical conductivity, drainage, and heat conduction, and their flow channel structure directly affects gas distribution and drainage efficiency. Therefore, plate performance testing is an essential and critical step. When performing performance testing on plates using existing plate testing equipment, end plates are used to clamp the plates to create a sealed testing environment. The testing device then simulates the actual operating conditions of the plates, and the performance of the plates is tested using a detection device.

[0004] However, existing electrode testing devices require disassembly when replacing the electrode, which complicates the testing process and technology. Summary of the Invention

[0005] This invention provides a testing fixture and testing equipment to solve the technical problems of complex electrode plate testing processes and techniques.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] This application provides a test fixture including: a first clamping component, a second clamping component, and a sealing structure; the first clamping component and the second clamping component are arranged along a first direction; the sealing structure surrounds the first clamping component and the second clamping component to form a sealed space, and a first installation channel is provided on the sealing structure, the first installation channel communicating with the sealed space, so that the flow channel assembly can be installed into the sealed space through the first installation channel.

[0008] Based on the aforementioned technical features, the sealing structure is clamped by the first and second clamping components to form a sealed space, simulating the sealing environment and holding force during normal operation of the flow channel assembly. The first installation channel guides the installation of the flow channel assembly, allowing for faster removal of the flow channel assembly from or placement into the sealed space. This avoids disassembling the test fixture when replacing the flow channel assembly, effectively simplifying the testing process and procedures.

[0009] In some embodiments, the sealing structure includes: a first seal and a second seal; the first seal surrounds and is connected to the first clamping member; the second seal surrounds and is connected to the second clamping member, and the first seal, the second seal, the first clamping member, and the second clamping member enclose a sealing space.

[0010] Based on the aforementioned technical features, the sealing structure is a split structure consisting of a first sealing element and a second sealing element. During the clamping process of the first clamping component and the second clamping component, the first sealing element and the second sealing element are independently compressed, which can effectively reduce local leakage or stress concentration caused by uneven force distribution, and improve the uniformity and reliability of the seal. Simultaneously, since the first sealing element is disposed on the first clamping component and the second sealing element is disposed on the second clamping component, slippage between the first sealing element and the second sealing element can be avoided during the assembly of the testing fixture, making operation simpler.

[0011] In some embodiments, the first seal is provided with a first through groove extending in a second direction; the second seal is provided with a second through groove extending in a second direction, the openings of the first through groove and the openings of the second through groove are disposed opposite to each other in a first direction to form a first installation channel, the first direction being perpendicular to the second direction.

[0012] According to the above technical features, since the first installation channel is composed of a first through groove and a second through groove, it can effectively avoid the first installation channel being opened on the first seal or the second seal, which would reduce the strength of the first seal or the second seal. It can also prevent the first seal and the second seal from being damaged when the first clamping component and the second clamping component clamp the first seal and the second seal.

[0013] In some embodiments, the test fixture further includes a third seal, which is removably sealed within the first mounting channel.

[0014] Based on the above technical features, the third seal can open and close the first installation channel. When the third seal is removed from the first installation channel, the first installation channel can be opened to allow for the replacement of the flow channel assembly. When the third seal is installed in the first installation channel, the sealing space can meet the sealing requirements for the flow channel assembly test.

[0015] In some embodiments, the test fixture further includes a carrier and a mounting member; the carrier is disposed within a sealed space for carrying the flow channel assembly; the mounting member passes through a first mounting channel and is connected to the carrier; a third seal is located between the inner wall of the first mounting channel and the mounting member, and seals the gap between the mounting member and the first mounting channel.

[0016] Based on the above technical features, the flow channel components can be quickly installed and disassembled through the carrier and mounting components, effectively increasing the ease of use of the testing fixture.

[0017] In some embodiments, the flow channel assembly includes a first flow channel component and a second flow channel component that are detachably connected, and the sealing structure is further provided with a second mounting channel that communicates with the sealing space.

[0018] The support component includes: a first support structure and a second support structure. The first support structure and the second support structure are detachably connected. Along the axis of the second mounting channel, the projection of the second support structure is located within the projection of the second mounting channel. The first support structure is used to connect the first flow channel component, and the second support structure is used to connect the second flow channel component. The first support structure can drive the second support structure to move along a second direction, which is consistent with the axial direction of the first mounting channel.

[0019] Based on the above technical features, the second support structure can be removed from the sealed space through the second installation channel, and the second flow channel component on the second support structure can be replaced, so as to realize the partial replacement of the flow channel assembly and further increase the convenience of the test fixture for testing the flow channel assembly.

[0020] In some embodiments, the carrier further includes: a first sliding structure, a second sliding structure, and a fourth seal; the first sliding structure is disposed on the first carrier structure, the second sliding structure is disposed on the second carrier structure, and the first and second sliding structures are arranged along a second direction; the fourth seal is detachably sealed within the second mounting channel, and the fourth seal is capable of sliding along a third direction, which is aligned with the axial direction of the second mounting channel; the fourth seal is provided with a third sliding structure; when the first carrier structure slides along the second direction, the first and second sliding structures are capable of sliding relative to the fourth seal along the second direction; when the fourth seal slides along the third direction, the third sliding structure can drive the second sliding structure to slide along the third direction.

[0021] Based on the above technical features, the fourth sealing element can seal the second installation channel, and through the cooperation of the fourth sealing element, the first sliding structure, the second sliding structure and the third sliding structure, the second load-bearing structure in the sealed space can be disassembled simultaneously when the fourth sealing element is disassembled, further increasing the convenience of the test fixture operation.

[0022] In some embodiments, the test fixture further includes a membrane electrode layer, a carrier, and a mounting component; the membrane electrode layer is located between the first seal and the second seal, and divides the sealed space into a cathode region and an anode region; the carrier includes a first carrier portion and a second carrier portion, the first carrier portion being used to carry the anode flow channel component of the flow channel assembly and located within the anode region, and the second carrier portion being used to carry the cathode flow channel component of the flow channel assembly and located within the cathode region; the mounting component includes a first mounting portion and a second mounting portion, the first mounting portion being connected to the first carrier portion, the second mounting portion being connected to the second carrier portion, and both the first mounting portion and the second mounting portion passing through the first mounting channel.

[0023] Based on the above technical features, the anode flow channel component can be installed or disassembled separately through the first mounting part and the first bearing part, or the cathode flow channel component can be installed or disassembled separately through the second mounting part and the second bearing part, which can effectively improve the ease of operation of the test fixture.

[0024] In some embodiments, the first clamping component and / or the second clamping component are made of transparent material.

[0025] Based on the above technical features, the first clamping component and / or the second clamping component are made of transparent material, which allows testers to easily observe the state of the anode flow channel component and the cathode flow channel component through the transparent first clamping component and / or the second clamping component.

[0026] In some embodiments, the test fixture further includes a data acquisition board, on which multiple current sensors are disposed, and the data acquisition board is positioned between the first clamping component and the first supporting component.

[0027] Based on the above technical features, the acquisition board can measure the current density of the flow channel component in different zones through its multiple current sensors. By analyzing the data of the zoned current density, the current distribution in different areas of the flow channel component can be understood.

[0028] In some embodiments, the test fixture further includes a first current collector and a second current collector; the first current collector is disposed between the first clamping member and the first seal, the first seal is made of conductive material and is electrically connected to the first current collector; the second current collector is disposed between the second clamping member and the second seal, the second seal is made of conductive material and is electrically connected to the second current collector.

[0029] Based on the above technical features, the testing device can receive test information such as current and voltage through the first current collector and the second current collector, and then obtain the performance of the flow channel component through this test information.

[0030] In some embodiments, the test fixture further includes: a displacement driving device and a rotation driving device; the displacement driving device has a first driving end and a second driving end, the first driving end and the second driving end can move closer or further apart relative to each other along a first direction, the first driving end is connected to a first clamping member, and the second driving end is connected to a second clamping member; the rotation driving device has a third driving end, the third driving end is connected to the displacement driving device to make the displacement driving device rotate.

[0031] Based on the above technical features, by driving the movement of the first driving end and the second driving end through the displacement driving device, the automated movement of the first clamping component and the second clamping component can be realized, the clamping force of the first clamping component and the second clamping component on the first seal and the second seal can be precisely controlled, thereby adjusting the sealing performance of the sealing space and avoiding stress concentration. The rotation driving device can realize the rotation of the sealing space at multiple angles to realize the testing of multiple working states of the flow channel component.

[0032] This application also provides a testing device including the testing fixture, simulation device, and detection device provided in this application. The simulation device is connected to the testing fixture and is used to simulate the working state of the flow channel assembly. The detection device is connected to the electrode plate testing fixture and is used to detect the state of the flow channel assembly. Attached Figure Description

[0033] Figure 1 This is a first structural schematic diagram of a test fixture provided in this application;

[0034] Figure 2 A first sectional view of a test fixture provided in this application;

[0035] Figure 3 A second sectional view of a test fixture provided in this application;

[0036] Figure 4 A schematic diagram of the structure of the first clamping component of a test fixture provided in this application;

[0037] Figure 5 A schematic diagram of the structure of the second clamping component of a test fixture provided in this application;

[0038] Figure 6 A first-view structural schematic diagram of the first seal of a test fixture provided in this application;

[0039] Figure 7 A second-view structural schematic diagram of the first seal of a test fixture provided in this application;

[0040] Figure 8 A first-view structural schematic diagram of a second seal of a test fixture provided in this application;

[0041] Figure 9 This application provides a second-view structural schematic diagram of a second seal of a test fixture.

[0042] Figure 10 A partial structural schematic diagram of a test fixture provided in this application;

[0043] Figure 11 A third sectional view of a test fixture provided in this application;

[0044] Figure 12 A fourth sectional view of a test fixture provided in this application;

[0045] Figure 13 This application provides a structural schematic diagram of a test fixture carrier and mounting component;

[0046] Figure 14 A schematic diagram of the structure of the fourth seal of a test fixture provided in this application;

[0047] Figure 15 A first-view structural schematic diagram of an anode flow channel component and a cathode flow channel component of a test fixture provided in this application;

[0048] Figure 16 A second-view structural schematic diagram of an anode flow channel component and a cathode flow channel component of a test fixture provided in this application;

[0049] Figure 17 This is a schematic diagram of the second structure of a test fixture provided in this application.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. First clamping component; 101. First step plate; 102. Second step plate; 103. Third step plate; 104. First sealing groove;

[0052] 2. Second clamping component; 201. Fourth step plate; 202. Fifth step plate; 203. Sixth step plate; 204. Second sealing groove;

[0053] 3. Sealed structure;

[0054] 301, First sealing element; 3011, First through groove; 3012, First annular plate; 3013, Second annular plate; 3014, Third through groove;

[0055] 302, Second seal; 3021, Second through groove; 3022, Third annular plate; 3023, Fourth annular plate; 3024, Fourth through groove;

[0056] 303. Third sealing element;

[0057] 4. Bearing component; 401. First bearing part; 402. Second bearing part; 403. First bearing structure; 404. Second bearing structure;

[0058] 5. Mounting components; 501. First mounting part; 502. Second mounting part;

[0059] 6. Membrane electrode layer; 7. First sliding structure; 8. Second sliding structure; 9. Acquisition board; 10. First current collector; 11. Second current collector;

[0060] 12. Displacement driving device; 1201. First driving end; 1202. Second driving end; 13. Rotation driving device; 14. Isolation plate;

[0061] 15. First mounting frame; 16. Second mounting frame;

[0062] 17. Flow channel assembly; 1701. Anode flow channel component; 1702. Cathode flow channel component; 1703. First flow channel component; 1704. Second flow channel component; 18. Fourth seal; 19. Third sliding structure; 20. Fourth sliding structure;

[0063] A. First direction; B. Second direction; C. First mounting channel; D. Sealed space; D1. Cathode area; D2. Anode area; E. Second mounting channel; F. Third direction. Detailed Implementation

[0064] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0065] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this application.

[0066] This application provides a testing device, including a testing fixture, a simulation device, and a detection device; the main function of the testing fixture is to fix the flow channel assembly of the electrode plate and to keep the flow channel assembly in a sealed state, so as to simulate the sealing and pressure state of the flow channel assembly inside the fuel cell.

[0067] The primary function of the simulation device is to simulate the operating environment of the flow channel assembly under normal working conditions. The simulation device can also provide simulations of extreme environments for the flow channel assembly. In some possible embodiments, the simulation device may include a heating component that contacts the test fixture to heat it, thereby subjecting the flow channel assembly to a high-temperature environment to simulate its operation under high-temperature conditions. In other possible embodiments, the simulation device may also include a pressure simulation device, with the test fixture placed inside to simulate the flow channel assembly's operation under extreme pressure environments. This application does not limit the specific structure of the simulation device; it can be selected based on the testing items and cost considerations.

[0068] The main function of the testing device is to test various parameters of the flow channel components and to process and summarize the data. In some possible embodiments, the testing device may include multiple sensors, such as temperature sensors, pressure sensors, infrared sensors, high-speed cameras, voltage sensors, and current sensors. The testing device may also include computer equipment or microcontroller equipment. This application does not specifically limit the specific type and structure of the testing device, but can limit it according to actual conditions such as testing accuracy and cost.

[0069] Fuel cell plates, also known as bipolar plates, are key components in a fuel cell stack. They are typically located between two individual cells and function to separate reactant gases, distribute gases, collect current, conduct heat, and provide structural support. Their main structure is usually flat, and the material can be graphite, metal, or composite materials. The surface of the plate is precision-machined to form a specific pattern of raised and recessed structures: the raised parts, called ribs, support the membrane electrode assembly and conduct current; the recessed parts form the flow channel assembly, serving as pathways for gas and liquid flow.

[0070] The flow channel assembly is a core functional component inside the electrode plates, and common designs include straight, serpentine, interdigitated, and mesh structures. Its main function is to uniformly deliver hydrogen and air (oxygen) to the electrode reaction area while promptly draining the water generated during the reaction. The geometry, depth, width, length, and layout of the flow channel assembly directly affect the uniformity of gas distribution, mass transfer efficiency, and drainage capacity. Improper design can lead to localized flooding or insufficient gas supply, thereby reducing battery performance. Therefore, optimizing the flow channel structure is crucial for improving fuel cell efficiency and stability.

[0071] In fuel cells, the flow channel assembly can include cathode and anode flow channels. The anode and cathode flow channels are responsible for transporting hydrogen and air (oxygen), respectively, and their structural design is crucial to cell performance. The anode flow channel guides hydrogen to a uniform distribution on the anode catalyst layer, where it participates in the electrochemical reaction to produce protons and electrons, and removes unreacted hydrogen and a small amount of water. The cathode flow channel, on the other hand, needs to transport a large amount of air to the cathode side to support the oxygen reduction reaction, while efficiently removing the generated water to prevent flooding. Because the cathode reaction involves more complex oxygen transport and liquid water management, and the air flow rate is much greater than that of hydrogen, the cathode flow channel is usually designed to be wider or employ a more complex structure (such as a serpentine or interdigitated shape) to enhance gas diffusion and drainage capacity, while the anode flow channel can be relatively simplified. Synergistic optimization of the two flow channels helps improve overall mass transfer efficiency and cell stability.

[0072] like Figures 1 to 17 As shown, in some embodiments, the test fixture includes: a first clamping component 1, a second clamping component 2, and a sealing structure 3; the first clamping component 1 and the second clamping component 2 are arranged along a first direction A, and the sealing structure 3 surrounds the first clamping component 1 and the second clamping component 2; the first clamping component 1 and the second clamping component 2 can clamp the sealing structure 3 so that the first clamping component 1 and the second clamping component 2 are tightly against the sealing structure 3, so that the two opposing surfaces of the first clamping component 1 and the second clamping component 2 and the inner peripheral surface of the sealing structure 3 form a sealing space D. The first clamping component 1 and the second clamping component 2 can move closer or further away from each other along the first direction A to provide force to the sealing structure 3 to ensure the sealing performance of the sealing space D. For example, the first direction A can be the thickness direction of the first clamping component 1, or it can be a vertical or horizontal direction. This application does not specifically limit the first direction A, and it can be selected according to the specific structure of the first clamping component 1 and the second clamping component 2 and the actual situation such as test requirements.

[0073] The sealing structure 3 is provided with a first mounting channel C, which communicates with the sealed space D, allowing the flow channel assembly 17 to be installed into the sealed space D through the first mounting channel C. Specifically, the first mounting channel C connects the sealed space D to the external environment. When testing the flow channel assembly 17, the first mounting channel C can be opened, and the flow channel assembly 17 can be installed into the sealed space D through the first mounting channel C. Subsequently, the first mounting channel C can be closed, leaving the flow channel assembly 17 within the sealed space. When replacing the flow channel assembly 17, the first mounting channel C can be opened, the existing flow channel assembly 17 can be removed, and the replacement flow channel assembly 17 can be installed into the sealed space D through the first mounting channel C. The first mounting channel C can then be closed, enabling rapid replacement of the flow channel assembly 17.

[0074] The sealing structure 3 is clamped by the first clamping component 1 and the second clamping component 2 to form a sealed space D, simulating the sealing environment and holding force during normal operation of the flow channel assembly 17. The first installation channel C guides the installation of the flow channel assembly 17, allowing for faster removal of the flow channel assembly 17 from the sealed space D or placement of the flow channel assembly 17 into the sealed space D. This avoids disassembling the test fixture when replacing the flow channel assembly 17, effectively simplifying the testing process and procedures.

[0075] like Figure 1 and Figure 2 as well as Figures 6 to 9 As shown, in some embodiments, the sealing structure 3 includes a first sealing element 301 and a second sealing element 302. The first sealing element 301 surrounds and is connected to the first clamping member 1. The main function of the first sealing element 301 and the second sealing element 302 is to tightly abut against each other, thereby achieving a seal. Since the first sealing element 301 surrounds the first clamping member 1 and the second sealing element 302 surrounds the second clamping member 2, the first sealing element 301 and the second sealing element 302 can form a sealing space D. Exemplarily, the connection between the first sealing element 301 and the first clamping member 1 can be achieved through an interference fit. Alternatively, the first sealing element 301 and the second sealing element 302 can be clamped by the first clamping member 1 and the second clamping member 2 to fix the first sealing element 301 and the second sealing element 302.

[0076] With this configuration, the sealing structure 3 is a split structure consisting of a first sealing element 301 and a second sealing element 302. During the clamping process of the first clamping component 1 and the second clamping component 2, the first sealing element 301 and the second sealing element 302 are independently compressed, which can effectively reduce local leakage or stress concentration caused by uneven force distribution and improve the uniformity and reliability of the seal. At the same time, the first sealing element 301 is disposed on the first clamping component 1 and the second sealing element 302 is disposed on the second clamping component 2. During the assembly of the test fixture, slippage between the first sealing element 301 and the second sealing element 302 can be avoided, making the operation simpler.

[0077] like Figure 4 and Figure 5As shown, in some possible embodiments, the first clamping component 1 and the second clamping component 2 may have the same structure. The first clamping component 1 may include a first layer step plate 101, a second layer step plate 102, and a third layer step plate 103. The surfaces of the first layer step plate 101, the second layer step plate 102, and the third layer step plate 103 may be rectangular, and the area of ​​the surfaces gradually decreases. The second layer step plate 102 may be disposed in the middle of the surface of the first layer step plate 101, and the third layer step plate 103 may be disposed in the middle of the surface of the second layer step plate 102, so that the first layer step plate 101, the second layer step plate 102, and the third layer step plate 103 form a stepped structure. An annular first sealing groove 104 may be formed on the surface of the second layer step plate 102, and a sealing ring may be disposed inside the first sealing groove 104.

[0078] like Figure 4 and Figure 5 As shown, the second clamping component 2 may include a fourth step plate 201, a fifth step plate 202, and a sixth step plate 203. The surfaces of the fourth step plate 201, the fifth step plate 202, and the sixth step plate 203 may be rectangular, and their areas gradually decrease. The fifth step plate 202 may be located in the middle of the surface of the fourth step plate 201, and the sixth step plate 203 may be located in the middle of the surface of the fifth step plate 202, so that the fourth step plate 201, the fifth step plate 202, and the sixth step plate 203 form a stepped structure. An annular second sealing groove 204 may be formed on the surface of the fifth step plate 202, and a sealing ring may be provided inside the second sealing groove 204.

[0079] like Figures 6 to 9 As shown, the first seal 301 and the second seal 302 can have the same structure. The first seal 301 may include a first annular plate 3012 and a second annular plate 3013, with the second annular plate 3013 disposed on the surface of the first annular plate 3012 and located near the edge of the outer peripheral surface of the first annular plate 3012. The second seal 302 may include a third annular plate 3022 and a fourth annular plate 3023, with the fourth annular plate 3023 disposed on the surface of the third annular plate 3022 and located near the edge of the outer peripheral surface of the third annular plate 3022.

[0080] like Figures 3 to 9As shown, during assembly, the surface of the second stepped plate 102 of the first clamping component 1 is in contact with the surface of the first annular plate 3012 of the first sealing member 301, and the inner circumferential surface of the second annular plate 3013 of the first sealing member 301 surrounds the second stepped plate 102 of the first clamping component 1 and is in contact with the outer circumferential surface of the second stepped plate 102 of the first clamping component 1. The surface of the third stepped plate 103 of the first clamping component 1 is located within the space surrounded by the inner circumferential surface of the first annular plate 3012 of the first sealing member 301.

[0081] The surface of the fifth step plate 202 of the second clamping component 2 is in contact with the surface of the third annular plate 3022 of the second sealing member 302, and the inner circumferential surface of the fourth annular plate 3023 of the second sealing member 302 surrounds the fifth step plate 202 of the second clamping component 2 and is in contact with the outer circumferential surface of the fifth step plate 202 of the second clamping component 2. The surface of the sixth step plate 203 of the second clamping component 2 is located within the space surrounded by the inner circumferential surface of the third annular plate 3022 of the second sealing member 302.

[0082] With this configuration, the first clamping component 1 and the second clamping component 2 are relatively close to each other along the first direction A. The second layer of stepped plate 102 and the first annular plate 3012 press the first sealing ring inside the first sealing groove. The fifth layer of stepped plate 202 and the third annular plate 3022 press the second sealing ring inside the second sealing groove, so that the surface of the third layer of stepped plate 103 of the first clamping component 1, the inner circumferential surface of the first annular plate 3012 of the first sealing member 301, the surface of the sixth layer of stepped plate 203 of the second clamping component 2, and the inner circumferential surface of the third annular plate 3022 of the second sealing member 302 form a sealing space D.

[0083] like Figure 2 as well as Figures 6 to 9As shown, in some embodiments, the first sealing member 301 is provided with a first through groove 3011 extending along the second direction B; the second sealing member 302 is provided with a second through groove 3021 extending along the second direction B. The openings of the first through groove 3011 and the second through groove 3021 are arranged opposite to each other along the first direction A to form a first mounting channel C, where the first direction A is perpendicular to the second direction B. The opening of the first through groove 3011 can be joined with the opening of the second through groove 3021 so that the first through groove 3011 and the second through groove 3021 form the first mounting channel C. This arrangement can effectively reduce the manufacturing difficulty of the first mounting channel C. Meanwhile, since the first mounting channel C is composed of the first through groove 3011 and the second through groove 3021, it can effectively prevent the strength of the first seal 301 or the second seal 302 from being reduced due to the first mounting channel C being opened on the first seal 301 or the second seal 302, and prevent the first seal 301 and the second seal 302 from being damaged when the first clamping component 1 and the second clamping component 2 clamp the first seal 301 and the second seal 302.

[0084] In some possible embodiments, the first through groove 3011 can penetrate the first seal 301 along the second direction B, and similarly, the second through groove 3021 can penetrate the second seal 302 along the second direction B, so that the first seal 301 and the second seal 302 constitute a first mounting channel C penetrating the sealing structure 3 along the second direction B. In other possible embodiments, one end of the first through groove 3011 can be located at the end of the first seal 301 along the second direction B, and the other end of the first through groove 3011 can be located within the sealing space D. One end of the second through groove 3021 can be located at the end of the second seal 302 along the second direction B, and the other end of the second through groove 3021 can be located within the sealing space D, so that the first mounting channel C connects the sealing space D and the external space. In some other possible embodiments, the first through groove 3011 may be formed on the surface of the first annular plate 3012 of the first seal 301 away from the second annular plate 3013 of the first seal 301, and the second through groove 3021 may be formed on the surface of the third annular plate 3022 of the second seal 302 away from the fourth annular plate 3023.

[0085] like Figure 1 , Figure 2 , Figure 10 and Figure 11As shown, in some embodiments, the test fixture further includes a third seal 303, which is detachably disposed within the first mounting channel C. The function of the third seal 303 is to seal the first mounting channel C to ensure the sealing performance of the sealing space D. The third seal 303 can be detachably disposed within the first mounting channel C. For example, the third seal 303 can be disposed within the first mounting channel C by an interference fit. The third seal 303 can also have a threaded structure, and the first mounting channel C can also have a corresponding threaded structure, thereby achieving a sealing connection between the third seal 303 and the first mounting channel C. This application does not limit the specific connection method between the third seal 303 and the first mounting channel C, and it can be limited according to actual conditions such as cost and process.

[0086] In some possible embodiments, the third seal 303 can be an elastic seal. When the third seal 303 needs to be installed, it can be placed in the first mounting channel C, and the first clamping member 1 and the second clamping member 2 are brought closer together to push the first seal 301 and the second seal 302 closer together, thereby compressing the third seal 303 and sealing the first mounting channel C to meet the sealing performance of the sealing space D. When the flow channel assembly 17 needs to be replaced, the force exerted by the first clamping member 1 and the second clamping member 2 on the first seal 301 and the second seal 302 can be reduced, thereby reducing the force exerted by the first seal 301 and the second seal 302 on the third seal 303, so that the third seal 303 can be removed from the first mounting channel C, and then the flow channel assembly 17 can be replaced. With this configuration, the third seal 303 can open and close the first mounting channel C. When the third seal 303 is removed from the first mounting channel C, the first mounting channel C can be opened to allow for the replacement of the flow channel assembly 17. When the third seal 303 is installed in the first mounting channel C, the sealing space D can meet the sealing requirements for the test of the flow channel assembly 17.

[0087] It should be noted that the first seal 301 and the second seal 302 compress the third seal 303, causing the third seal 303 to undergo elastic deformation. Simultaneously, the third seal 303 generates elastic force to restore its original shape. This elastic force acts on the inner wall of the first mounting channel C, generating significant friction, thus confining the third seal 303 within the first mounting channel C. When it is necessary to remove the third seal 303 from the first mounting channel C, it is only necessary to slightly separate the first clamping component 1 and the second clamping component 2, reducing the compression of the third seal 303 by the first seal 301 and the second seal 302, decreasing the elastic deformation of the third seal 303, reducing the elastic force generated by the third seal 303, and consequently reducing the elastic force exerted by the third seal 303 on the inner wall of the first mounting channel C. This reduces the friction within the first mounting channel C, allowing the third seal 303 to be removed from the first mounting channel C. With this setup, the flow channel assembly 17 can be replaced through the first installation channel C without completely disassembling the test fixture.

[0088] like Figure 2 and Figure 11 As shown, in some embodiments, the test fixture also includes a membrane electrode layer 6, located between the first seal 301 and the second seal 302, dividing the sealed space D into a cathode region D1 and an anode region D2. The membrane electrode layer 6 is a core component of the fuel cell, its main function being to achieve efficient electrochemical reactions. It consists of a proton exchange membrane, catalytic layers on both sides, and a gas diffusion layer. It is responsible for conducting protons, blocking reactant gases, catalyzing hydrogen oxidation and oxygen reduction reactions, and discharging the generated electrons to form an electric current. Specifically, hydrogen decomposes into protons and electrons in the anode catalytic layer. Protons pass through the proton exchange membrane to the cathode, while electrons, after performing work in the external circuit, reach the cathode and combine with oxygen to form water. Simultaneously, the gas diffusion layer also functions to uniformly distribute reactant gases, discharge generated water, and conduct heat. The performance of the membrane electrode layer 6 directly determines the efficiency, power density, and lifespan of the fuel cell.

[0089] In the test fixture provided in this application, the membrane electrode layer 6 is mainly used to simulate the membrane electrode layer 6 inside an actual fuel cell. In some possible embodiments, the membrane electrode layer 6 can divide the sealed space D into a cathode region D1 and an anode region D2 arranged along a first direction A to simulate the accommodating space of the anode flow channel component 1701 and the cathode flow channel component 1702 in the fuel cell. For example, the cathode flow channel component 1702 and the anode flow channel component 1701 to be tested can be respectively disposed inside the cathode region D1 and the anode region D2 to achieve the testing of the cathode flow channel component 1702 and the anode flow channel component 1701.

[0090] In some possible embodiments, the area between the first clamping component 1 and the membrane electrode layer 6 can serve as the anode region D2. The first sealing component 301 can be provided with a first inflow channel and a first outflow channel. When the anode flow channel component 1701 is disposed within the anode region D2, the first inflow channel can communicate with the gas inlet of the anode flow channel component 1701, and the first outflow channel can communicate with the gas outlet of the anode flow channel component 1701, so that hydrogen can enter the anode flow channel component 1701 through the first inflow channel, and some of the reaction gas and products can flow out from the first outflow channel. A valve body and a flow detection sensor can also be provided to control and detect the gas inflow rate.

[0091] The area between the second clamping component 2 and the membrane electrode layer 6 can serve as a cathode region D1. The second sealing component 302 can be provided with a second inflow channel and a second outflow channel. When the cathode flow channel component 1702 is positioned within the cathode region D1, the second inflow channel can communicate with the air inlet of the cathode flow channel component 1702, and the second outflow channel can communicate with the air outlet of the cathode flow channel component 1702, allowing oxygen to enter the cathode flow channel component 1702 through the second inflow channel and allowing some of the reaction gas and products to flow out through the second outflow channel. A valve body and a flow detection sensor can also be provided to control and detect the gas inflow. Temperature measuring holes can also be provided on the first sealing component 301 and the second sealing component 302, and a temperature sensor can be installed inside the temperature measuring hole to measure the temperature of the test fixture.

[0092] like Figures 6 to 12 As shown, in some embodiments, the test fixture further includes a first current collector 10 and a second current collector 11; the first current collector 10 is disposed between the first clamping component 1 and the first seal 301, and the second current collector 11 is disposed between the second clamping component 2 and the second seal 302; the function of the first current collector 10 and the second current collector 11 is to collect and conduct current. During the test, the cathode flow channel component 1702 and the anode flow channel component 1701 participate in the reaction within the sealed space D to generate current, which can be collected through the first current collector 10 and the second current collector 11. In some possible embodiments, the first current collector 10 and the second current collector 11 may be provided with a protrusion structure along the second direction B to facilitate the connection of an external test device, so that the test device can receive test information such as current and voltage through the first current collector 10 and the second current collector 11, and then obtain the performance of the flow channel assembly 17 through this test information.

[0093] In some possible embodiments, the first current collector 10 may be disposed between the first stepped plate 101 and the second annular plate 3013, and the second current collector 11 may be disposed between the fourth stepped plate 201 and the fourth annular plate 3023 to achieve a compact structure for the test fixture. Exemplarily, the first seal 301 and the second seal 302 may be made of graphite material, or they may be made of conductive metallic material, so that the first seal 301 and the second seal 302 can conduct the current generated after the flow channel assembly 17 participates in the reaction to the first current collector 10 and the second current collector 11.

[0094] like Figure 2 as well as Figures 11 to 16 As shown, in some embodiments, the test fixture further includes a carrier 4 and a mounting member 5. The carrier 4 is disposed within the sealed space D and is used to support the flow channel assembly 17. During testing, the flow channel assembly 17 can be placed on the carrier 4, and the flow channel assembly 17 can be fixed inside the sealed space D through the cooperation between the carrier 4 and the first mounting channel C. The mounting member 5 passes through the first mounting channel C and is connected to the carrier 4. It can be understood that one end of the mounting member 5 is connected to the carrier 4, and the other end can extend away from the sealed space D to the outside of the first mounting channel C. When it is necessary to replace the flow channel assembly 17, the carrier 4 can be pulled out of the sealed space D through the mounting member 5, and the flow channel assembly 17 can be removed from the carrier 4 and replaced with a new flow channel assembly 17. Then, the mounting member 5 is used to install the carrier 4 back into the sealed space D. For example, the carrier 4 may be integrally formed with the mounting part 5, or the carrier 4 may be welded to the mounting part 5. This application does not limit the specific connection method between the carrier 4 and the mounting part 5, and the choice can be made according to the actual situation such as process and cost.

[0095] The third seal 303 is located between the inner wall of the first mounting channel C and the mounting member 5, sealing the gap between the mounting member 5 and the first mounting channel C. In some possible embodiments, an opening may be made in the third seal 303 so that the mounting member 5 passes through the opening and extends out of the first mounting channel C. The first seal 301 and the second seal 302 compress the third seal 303 to ensure a tight fit between the third seal 303 and the mounting member 5, thereby guaranteeing the sealing performance of the sealing space D. With this configuration, the flow channel assembly 17 can be quickly installed and disassembled through the carrier 4 and the mounting member 5, effectively increasing the ease of use of the testing fixture.

[0096] like Figure 1 , Figure 3 , Figure 10 , Figure 12 as well as Figure 13 As shown, in some embodiments, the flow channel assembly includes a detachably connected first flow channel component 1703 and a second flow channel component 1704. Specifically, during the testing of the flow channel assembly, it may be necessary to replace a portion of the flow channel in some cases. The detachable connection of the first flow channel component 1703 and the second flow channel component 1704 allows for the removal and replacement of either component when partial replacement is required. In some possible embodiments, the first flow channel component 1703 and the second flow channel component 1704 may be slidably connected via a groove. Alternatively, the first flow channel component 1703 and the second flow channel component 1704 may be directly spliced ​​or magnetically connected. A partially elastic sealing material, such as rubber or plastic, may be provided at the connection point to ensure a tight seal between the first flow channel component 1703 and the second flow channel component 1704 during connection.

[0097] The sealing structure 3 also includes a second mounting channel E, which communicates with the sealing space. For example, the extension direction of the second mounting channel E can be perpendicular to both the second direction B and the first direction A, or it can be a third direction F. The primary purpose of the second mounting channel E is to allow the replacement of the first flow channel component 1703 or the second flow channel component 1704 from the sealing space. Figures 6 to 9 As shown, in some possible embodiments, the first seal 301 and the second seal 302 may be provided with a third through groove 3014 and a fourth through groove 3024, with the opening of the third through groove 3014 and the opening of the fourth through groove 3024 being opposite to each other to form a second installation channel E.

[0098] The carrier 4 includes a first carrier structure 403 and a second carrier structure 404 detachably connected. The first carrier structure 403 is used to connect to the first flow channel component 1703, and the second carrier structure 404 is used to connect to the second flow channel component 1704. For example, the first carrier structure 403 and the second carrier structure 404 can be detachably connected via magnetic attraction or via a slide rail. This application does not limit the specific connection method of the first carrier structure 403 and the second carrier structure 404. It is necessary to ensure that when the first carrier structure 403 moves along the second direction, the first carrier structure 403 and the second carrier structure 404 are in a connected state, so that the first carrier structure 403 can drive the second carrier structure 404 to be removed from the sealed space through the first mounting channel. When it is necessary to disassemble the second carrier structure 404, the second carrier structure 404 can be moved along the third direction F to remove the second carrier structure 404.

[0099] The connection between the first support structure 403 and the first flow channel component 1703 can be welding or snap-fit. Similarly, the connection between the second support structure 404 and the second flow channel component 1704 can also be welding or snap-fit. When the first support structure 403 and the second support structure 404 are connected, the first flow channel component 1703 and the second flow channel component 1704 are assembled together to achieve normal flow channel function. When the second support structure 404 is disassembled relative to the first support structure 403 along a third direction F, the second support structure 404 can drive the second flow channel component 1704 to move together, so that the second flow channel component 1704 is separated from the first flow channel portion. Along the axis of the second mounting channel E, the projection of the second support structure 404 is located within the projection of the second mounting channel E. This can be understood as the dimension of the second support structure 404 along the direction perpendicular to the third third direction F needs to be smaller than the dimension of the second mounting channel E along the direction perpendicular to the third third direction F. It should be noted that the dimension of the second flow channel component 1704 along the direction perpendicular to the third third direction F also needs to be smaller than the dimension of the second mounting channel E along the direction perpendicular to the third third direction F, so that the second support structure 404 and the second flow channel component 1704 can be removed together from the second mounting channel E, so as to facilitate the replacement of the second flow channel component 1704 in part.

[0100] like Figure 1 , Figure 3 , Figure 10 , Figure 12 , Figure 13 as well as Figure 14 As shown, in some embodiments, the carrier 4 further includes a fourth seal 18, which is detachably and sealingly connected to the second mounting channel E. The main function of the fourth seal 18 is to seal the second mounting channel E to maintain the sealing conditions of the sealing space. For example, the fourth seal 18 may be an elastic sealing component, which is interference-fitted into the second mounting channel E to achieve the sealing of the second mounting channel E.

[0101] The support member 4 also includes a first sliding structure 7 and a second sliding structure 8. The first sliding structure 7 is disposed on the first support structure 403, and the second sliding structure 8 is disposed on the second support structure 404. The first sliding structure 7 and the second sliding structure 8 are arranged along the second direction. The fourth sealing member 18 is provided with a third sliding structure 19. When the first support structure 403 slides along the second direction, the first sliding structure 7 and the second sliding structure 8 can slide relative to the fourth sealing member 18 along the second direction B. When the fourth sealing member 18 slides along the third direction F, the third sliding structure 19 can drive the second sliding structure 8 to slide along the third direction F.

[0102] This can be understood as follows: the first sliding structure 7 and the second sliding structure 8 constitute a groove or slider extending along the second direction. The third sliding structure 19 on the fourth seal 18 can be slidably connected to the first sliding structure 7 and the second sliding structure 8, so that the first sliding structure 7 and the second sliding structure 8 can slide along the second direction B. This allows the first bearing structure 403 and the second bearing structure 404 to slide together along the second direction B relative to the fourth seal 18, enabling the bearing 4 to be completely removed from the first mounting channel C.

[0103] When the second bearing structure 404 needs to be disassembled from the second flow channel component 1704, the bearing 4 is completely located within the sealed space, and the second sliding structure 8 is connected to the third sliding structure 19. At this time, the second sliding structure 8 has a degree of freedom along the second direction B, but is limited by the third sliding structure 19 in the third direction F. Thus, when the fourth seal 18 is pulled outward along the third direction F, the fourth seal 18 can drive the second sliding structure 8 and the second bearing structure 404 to move out of the sealed space D through the second installation channel E via the third sliding structure 19.

[0104] In some possible embodiments, the first and second supporting parts can be a rectangular frame assembled along the second direction, with the length direction of the rectangular frame parallel to the second direction. The first sliding structure 7 and the second sliding structure 8 are arranged on one side of the width direction of the rectangular frame. Both the second sliding structure 8 and the first sliding structure 7 can be sliders with a T-shaped cross-section, extending along the second direction. A T-shaped groove is provided on the inner wall of the sealing structure 3 opposite to the first sliding structure 7 and the second sliding structure 8. At the same time, the third sliding structure 19 can also be a T-shaped groove. When the fourth sealing element 18 is disposed in the second mounting channel E, the third sliding structure 19 can be assembled with the groove on the inner wall of the sealing structure 3 opposite to the first sliding structure 7 and the second sliding structure 8 to form a sliding groove extending along the second direction B. The sliding groove is slidably connected to the first sliding structure 7 and the second sliding structure 8 along the second direction, so that the first sliding structure 7 and the second sliding structure 8 can slide relative to the fourth sealing element 18 along the second direction. When the second load-bearing structure 404 needs to be disassembled, the third sliding structure 19 can limit the second sliding structure 8 along the third direction F, so that when the fourth seal 18 slides in the third direction F, the third sliding structure 19 can drive the second sliding structure 8 to slide along the third direction F.

[0105] In some possible embodiments, a fourth sliding structure 20 may also be provided on the other side of the rectangular frame in the width direction. The fourth sliding structure 20 may also be a slider with a T-shaped cross-section. A groove is provided on the inner wall of the sealing structure 3 facing the fourth sliding structure 20, so that the fourth sliding structure 20 is slidably connected to the groove. Figure 2 as well as Figures 11 to 16As shown, in some embodiments, the support member 4 includes a first support portion 401 and a second support portion 402. The first support portion 401 is used to support the anode flow channel component 1701 of the flow channel assembly 17 and is located within the anode region D2. The second support portion 402 is used to support the cathode plate of the flow channel assembly 17 and is located within the cathode region D1. In some possible embodiments, the first support portion 401 can be a support frame, and the anode flow channel component 1701 can be connected to the inner circumferential surface of the first support portion 401 to realize the support of the anode flow channel component 1701 by the first support portion 401. For example, the connection between the first support portion 401 and the anode flow channel component 1701 can be a detachable connection achieved through a slot, or the connection between the first support portion 401 and the anode flow channel component 1701 can be achieved through a slide and a limiting member. This application does not specifically limit the connection relationship between the first support portion 401 and the anode flow channel component 1701, and the connection can be selected according to actual needs such as process and cost.

[0106] The second support portion 402 can also be the same support frame as the first support portion 401, and the cathode flow channel component 1702 can be connected to the inner peripheral surface of the second support portion 402. For example, the connection between the second support portion 402 and the cathode flow channel component 1702 can be a detachable connection via a slot, or a connection via a slide and a limiting member. This application does not specifically limit the connection relationship between the second support portion 402 and the cathode flow channel component 1702; the choice can be made according to actual needs such as process and cost. When the first support portion 401 is disposed in the anode region D2, the flow channel of the anode flow channel component 1701 can face the first clamping component 1. Similarly, when the second support portion 402 is disposed in the cathode region D1, the flow channel of the cathode flow channel component 1702 can face the second clamping component 2.

[0107] In some possible embodiments, the first support portion 401 and the second support portion 402 may have the same structure. The first support portion 401 and the second support portion 402 may both be provided with a first support structure 403 and a second support structure 404. Correspondingly, the first support portion 401 and the second support portion 402 may also both be provided with a first sliding structure 7 and a second sliding structure 8, so that the second support structure 404 of the first support portion 401 and / or the second support portion 402 can be disassembled or installed from the second mounting channel E through the first sliding structure 7 and the second sliding structure 8.

[0108] Mounting component 5 includes a first mounting portion 501 and a second mounting portion 502. The first mounting portion 501 is connected to the first supporting portion 401, and the second mounting portion 502 is connected to the second supporting portion 402. Both the first mounting portion 501 and the second mounting portion 502 pass through the first mounting channel C. In some possible embodiments, the first mounting portion 501 and the first supporting portion 401 may be integrally formed, and the second mounting portion 502 and the second supporting portion 402 may also be integrally formed. In other possible embodiments, the first mounting portion 501 and the first supporting portion 401 may be welded, and similarly, the second mounting portion 502 and the second supporting portion 402 may also be welded. This application does not limit the specific connection method of the first mounting portion 501 and the first supporting portion 401, as well as the second mounting portion 502 and the second supporting portion 402; the connection can be selected according to actual needs such as process and cost.

[0109] With this configuration, the anode flow channel component 1701 can be installed or removed separately through the first mounting part 501 and the first support part 401, or the cathode flow channel component 1702 can be installed or removed separately through the second mounting part 502 and the second support part 402, which can effectively improve the ease of operation of the test fixture.

[0110] In some embodiments, the first clamping member 1 and / or the second clamping member 2 are made of transparent material. This arrangement is intended to allow test personnel to easily observe the state of the anode flow channel component 1701 and the cathode flow channel component 1702 through the transparent first clamping member 1 and / or second clamping member 2. In some possible embodiments, the second clamping member 2 and the membrane electrode layer 6 form a cathode region D1. Generally, water is generated in the cathode flow channel of the fuel cell due to the reaction. To observe the drainage inside the cathode flow channel component 1702, the second clamping member 2 can be made of transparent material, allowing observation of the interior of the cathode flow channel component 1702 through the second clamping member 2.

[0111] like Figure 11 As shown, in some embodiments, the test fixture further includes a data acquisition plate 9, which is equipped with multiple current sensors. The data acquisition plate 9 is positioned between the first clamping component 1 and the first support portion 401. The data acquisition plate 9, through its multiple current sensors, can perform zoned current density measurements on the flow channel assembly 17. By analyzing the zoned current density data, the current distribution in different areas of the flow channel assembly 17 can be understood. Simultaneously, positioning the data acquisition plate 9 between the first clamping component 1 and the first support portion 401 prevents the data acquisition plate 9 from obstructing the test personnel from observing the drainage of the cathode flow channel assembly 1702 through the transparent second clamping component 2.

[0112] In some possible embodiments, two test fixtures may be included, arranged along a second direction B. A first clamping component 1 of the first test fixture is connected to a second first clamping component 1 along the second direction B, and a second clamping component 2 of the first test fixture is connected to a second clamping component 2 of the second test fixture along the second direction B. A partition plate 14 may also be provided to separate and isolate the sealed space D of the first test fixture from the sealed space D of the second test fixture.

[0113] like Figure 2 and Figure 17 As shown, in some embodiments, the test fixture further includes a displacement driving device 12 and a rotation driving device 13; the displacement driving device 12 has a first driving end 1201 and a second driving end 1202, the first driving end 1201 and the second driving end 1202 can move closer or further apart along a first direction A, the first driving end 1201 is connected to the first clamping member 1, and the second driving end 1202 is connected to the second clamping member 2; with this configuration, by driving the movement of the first driving end 1201 and the second driving end 1202 through the displacement driving device 12, the automated movement of the first clamping member 1 and the second clamping member 2 can be realized, the clamping force of the first clamping member 1 and the second clamping member 2 on the first seal 301 and the second seal 302 can be precisely controlled, thereby adjusting the sealing performance of the sealing space D and avoiding stress concentration.

[0114] In some possible embodiments, the displacement drive device 12 can be a ball screw assembly, which may have two ball nuts, which can serve as the first drive end 1201 and the second drive end 1202, respectively. Alternatively, the drive device can be two cylinders, arranged opposite each other along a first direction A, with their drive ends serving as the first drive end 1201 and the second drive end 1202, respectively. This application does not limit the specific structure of the displacement drive device 12; it can be selected based on actual conditions such as manufacturing process and cost.

[0115] In some possible embodiments, the test fixture may also be provided with a first mounting frame 15 and a second mounting frame 16. The first mounting frame 15 may be located on the side of the first clamping member 1 away from the second clamping member 2, and the second mounting frame 16 may be located on the side of the second clamping member 2 away from the first clamping member 1. The first drive end 1201 may be connected to the first mounting frame 15 by means of threads or welding, and the second drive end 1202 may also be connected to the second mounting frame 16 by means of threads or welding. Simultaneously, heating mounting holes may be provided on the first mounting frame 15 and the second mounting frame 16, and heating rods may be installed in the heating mounting holes to heat the test fixture to simulate the high-temperature operating environment of a fuel cell.

[0116] The rotation drive device 13 has a third drive end, which is connected to the displacement drive device 12 to rotate the displacement drive device 12. The main function of the rotation drive device 13 is to rotate the sealed space D to simulate the state of the flow channel assembly 17 when the fuel cell is in different placement states. For example, the rotation drive device 13 can be a rotary motor, and the drive end of the rotary motor can serve as the third drive end. The displacement drive device 12 can be connected to the third drive end through a connecting bracket to allow the sealed space D to be at different angles.

[0117] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A testing fixture, characterized in that, include: A first clamping component (1) and a second clamping component (2) are provided along a first direction (A); A sealing structure (3) surrounds the first clamping component (1) and the second clamping component (2) to form a sealed space (D). The sealing structure (3) is provided with a first mounting channel (C) and a second mounting channel (E). Both the first mounting channel (C) and the second mounting channel (E) are in communication with the sealed space (D) so that the flow channel assembly (17) can be installed into the sealed space (D) through the first mounting channel (C). The flow channel assembly (17) includes a detachably connected first flow channel component (1703) and a second flow channel component (1704). A third seal (303) is detachably sealed within the first mounting channel (C); A support member (4) is disposed within the sealed space (D) and is used to support the flow channel assembly (17). The support member (4) includes a first support structure (403), a second support structure (404), a first sliding structure (7), and a second sliding structure (8). The first support structure (403) and the second support structure (404) are detachably connected. Along the axis of the second mounting channel (E), the projection of the second support structure (404) is located within the projection of the second mounting channel (E). The first support structure (403) is used to connect the first The flow channel component (1703) is connected to the second flow channel component (1704). The first support structure (403) can drive the second support structure (404) to move along the second direction (B). The second direction (B) is axially aligned with the first mounting channel (C). The first sliding structure (7) is disposed on the first support structure (403). The second sliding structure (8) is disposed on the second support structure (404). The first sliding structure (7) and the second sliding structure (8) are arranged along the second direction. The mounting component (5) is inserted into the first mounting channel (C) and connected to the carrier (4). The third sealing component (303) is located between the inner wall of the first mounting channel (C) and the mounting component (5) and seals the gap between the mounting component (5) and the first mounting channel (C).

2. The test fixture according to claim 1, characterized in that, The sealing structure (3) includes: A first seal (301) surrounds the first clamping member (1) and is connected to the first clamping member (1); The second seal (302) surrounds the second clamping member (2) and is connected to the second clamping member (2). The first seal (301), the second seal (302), the first clamping member (1) and the second clamping member (2) together form the sealed space (D).

3. The testing fixture according to claim 2, characterized in that, The first seal (301) is provided with a first through groove (3011) extending in the second direction (B); The second seal (302) is provided with a second through groove (3021) extending along the second direction (B), the opening of the first through groove (3011) and the opening of the second through groove (3021) are arranged opposite to each other along the first direction (A) to form the first installation channel (C), the first direction (A) being perpendicular to the second direction (B).

4. The testing fixture according to claim 1, characterized in that, The carrier (4) also includes: A fourth seal (18) is detachably and sealingly connected to the second mounting channel (E). The fourth seal (18) is slidable along a third direction (F), which is aligned with the axial direction of the second mounting channel (E). The fourth seal (18) is provided with a third sliding structure (19). When the first bearing structure (403) slides along the second direction (B), the first sliding structure (7) and the second sliding structure (8) are slidable relative to the fourth seal (18) along the second direction (B). When the fourth seal (18) slides along the third direction (F), the third sliding structure (19) can drive the second sliding structure (8) to slide along the third direction (F).

5. The test fixture according to claim 2 or 3, characterized in that, The testing fixture also includes: A membrane electrode layer (6) is located between the first seal (301) and the second seal (302), and divides the sealed space (D) into a cathode region (D1) and an anode region (D2); The support member (4) includes a first support portion (401) and a second support portion (402). The first support portion (401) is used to support the anode flow channel component (1701) of the flow channel assembly (17) and is located in the anode region (D2). The second support portion (402) is used to support the cathode flow channel component (1702) of the flow channel assembly (17) and is located in the cathode region (D1). The mounting component (5) includes a first mounting part (501) and a second mounting part (502). The first mounting part (501) is connected to the first support part (401), and the second mounting part (502) is connected to the second support part (402). Both the first mounting part (501) and the second mounting part (502) pass through the first mounting channel (C).

6. The test fixture according to claim 1, characterized in that, The first clamping component (1) and / or the second clamping component (2) are made of transparent material.

7. The test fixture according to claim 5, characterized in that, Also includes: A data acquisition plate (9) is provided with multiple current sensors, and the data acquisition plate (9) is disposed between the first clamping component (1) and the first supporting part (401); and / or The first current collector (10) is disposed between the first clamping component (1) and the first sealing member (301). The first sealing member (301) is made of conductive material and is electrically connected to the first current collector (10). The second current collector (11) is disposed between the second clamping component (2) and the second sealing component (302). The second sealing component (302) is made of conductive material and is electrically connected to the second current collector (11).

8. The test fixture according to claim 1, characterized in that, Also includes: The displacement driving device (12) has a first driving end (1201) and a second driving end (1202). The first driving end (1201) and the second driving end (1202) can move closer or further apart relative to each other along a first direction (A). The first driving end (1201) is connected to the first clamping member (1), and the second driving end (1202) is connected to the second clamping member (2). A rotation drive device (13) has a third drive end, which is connected to the displacement drive device (12) to make the displacement drive device (12) rotate.

9. A testing device, characterized in that, include: The test fixture according to any one of claims 1-8; A simulation device, connected to the test fixture, is used to simulate the working state of the flow channel assembly; A detection device is connected to the test fixture and is used to detect the state of the flow channel assembly.

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