Test tool and test equipment

Abstract

The invention provides a test tool and test equipment, and relates to the technical field of fuel cells, the test tool comprises a first clamping part, a second clamping part and a sealing structure; the first clamping part and the second clamping part are arranged in the first direction. The sealing structure surrounds the first clamping component and the second clamping component to define a sealed space, a first mounting channel is formed in the sealing structure, and the first mounting channel communicates with the sealed space, so that the runner assembly can be mounted in the sealed space through the first mounting channel. The technical problem that the pole plate testing process and technology are complex is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel cell, in particular to a test tool and a test device. BACKGROUND

[0002] With the global economic development, the energy demand continues to grow, and the development of clean and sustainable energy technology has become a global focus. Fuel cells can directly convert the chemical energy of fuel into electrical energy, with the advantages of high efficiency, low pollution and low noise, and are considered as an important direction of future energy, with broad application prospects in the fields of transportation, power generation and portable devices.

[0003] The polar plate of the fuel cell is responsible for distributing gas, conducting electricity, draining water and conducting heat, and its flow channel structure directly affects the gas distribution and drainage effect. Therefore, polar plate performance testing is an essential key step. When using the polar plate testing device of the prior art to test the performance of the polar plate, an end plate is used to clamp the polar plate to form a sealed condition for polar plate testing, and then the actual working condition of the polar plate is simulated through the testing device, and the performance of the polar plate is detected through the detection device.

[0004] However, the polar plate testing device of the prior art needs to be disassembled when replacing the polar plate, which will complicate the testing process and the process. SUMMARY

[0005] The present application provides a test tool and a test device to solve the technical problem of complex polar plate testing process and process.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: The present application provides a test tool comprising: 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, and the sealing structure is provided with a first installation channel, which is in communication with the sealed space, so that the flow channel assembly can be installed into the sealed space through the first installation channel.

[0007] According to the above technical features, the first clamping component and the second clamping component clamp the sealing structure to enclose a sealed space to simulate the sealing environment and the pressing force of the flow channel assembly when it is working normally. The first installation channel can guide the installation of the flow channel assembly, and the flow channel assembly can be taken out of the sealed space or placed into the sealed space through the first installation channel. This can avoid disassembling the test tool when replacing the flow channel assembly, effectively simplifying the testing process and the testing process.

[0008] In some embodiments, the sealing structure comprises: a first sealing member and a second sealing member; the first sealing member surrounds and is connected to the first clamping component; the second sealing member surrounds and is connected to the second clamping component; the first sealing member, the second sealing member, the first clamping component and the second clamping component enclose a sealed space.

[0009] According to the above technical features, the sealing structure is a split structure composed of the first sealing member and the second sealing member. In the clamping process of the first clamping component and the second clamping component, the first sealing member and the second sealing member are independently pressed, which can effectively reduce local leakage or stress concentration caused by uneven stress, and improve the uniformity and reliability of the sealing. At the same time, the first sealing member is arranged on the first clamping component, and the second sealing member is arranged on the second clamping component. In the assembly process of the test tooling, the first sealing member and the second sealing member can be prevented from slipping, and the operation is more convenient.

[0010] In some embodiments, the first sealing member is provided with a first through slot extending in a second direction; the second sealing member is provided with a second through slot extending in the second direction; the slot opening of the first through slot and the slot opening of the second through slot are oppositely arranged in a first direction to enclose a first installation channel; and the first direction is perpendicular to the second direction.

[0011] According to the above technical features, since the first installation channel is composed of the first through slot and the second through slot, the strength of the first sealing member or the second sealing member in which the first installation channel is opened can be effectively reduced, and damage to the first sealing member and the second sealing member when the first clamping component and the second clamping component clamp the first sealing member and the second sealing member can be avoided.

[0012] In some embodiments, the test tooling further comprises a third sealing member, which is detachably sealed in the first installation channel.

[0013] According to the above technical features, the third sealing member can realize the opening and closing of the first installation channel. When the third sealing member is detached from the first installation channel, the first installation channel can be opened to realize the replacement of the flow channel assembly. When the third sealing member is installed in the first installation channel, the sealed space can meet the sealing requirements of the flow channel assembly test.

[0014] In some embodiments, the test tooling further comprises a bearing member and an installation member; the bearing member is arranged in the sealed space and used for bearing the flow channel assembly; the installation member is arranged in the first installation channel and connected to the bearing member; and the third sealing member is located between the inner wall of the first installation channel and the installation member, and seals the gap between the installation member and the first installation channel.

[0015] According to the technical features, the bearing member and the mounting member can realize quick mounting and dismounting of the flow channel assembly, effectively increasing the convenience of the test tool.

[0016] In some embodiments, the flow channel assembly comprises a first flow channel component and a second flow channel component connected detachably, and the sealing structure is further provided with a second mounting channel in communication with the sealing space. The bearing member comprises a first bearing structure and a second bearing structure connected detachably, a projection of the second bearing structure is located within a projection of the second mounting channel along an axis of the second mounting channel, the first bearing structure is used for connecting the first flow channel component, the second bearing structure is used for connecting the second flow channel component, and the first bearing structure can drive the second bearing structure to move along a second direction consistent with the first mounting channel.

[0017] According to the technical features, the second mounting channel can be used to take out the second bearing structure from the sealing space, and the second flow channel component on the second bearing structure can be replaced, so as to realize partial replacement of the flow channel assembly, further increasing the convenience of the test tool for testing the flow channel assembly.

[0018] In some embodiments, the bearing member further comprises a first sliding structure, a second sliding structure and a fourth sealing member, the first sliding structure is arranged on the first bearing structure, the second sliding structure is arranged on the second bearing structure, and the first sliding structure and the second sliding structure are arranged along the second direction; the fourth sealing member is detachably connected in the second mounting channel, the fourth sealing member can slide along a third direction consistent with the axis of the second mounting channel, the fourth sealing member is provided with a third sliding structure, when the first bearing structure slides along the second direction, the first sliding structure and the second sliding structure can slide relative to the fourth sealing member along the second direction, and when the fourth sealing member slides along the third direction, the third sliding structure can drive the second sliding structure to slide along the third direction.

[0019] According to the technical features, the fourth sealing member can realize sealing of the second mounting channel, and through cooperation of the fourth sealing member, the first sliding structure, the second sliding structure and the third sliding structure, when the fourth sealing member is dismounted, the second bearing structure in the sealing space can be dismounted synchronously, further increasing the convenience of the test tool operation.

[0020] In some embodiments, the test tool further comprises a membrane electrode layer, a carrier and a mounting piece; the membrane electrode layer is located between the first seal and the second seal and separates the sealed space into a cathode region and an anode region; the carrier comprises a first carrier part and a second carrier part, the first carrier part is used to carry the anode flow channel component of the flow channel assembly and is located in the anode region, and the second carrier part is used to carry the cathode flow channel component of the flow channel assembly and is located in the cathode region; the mounting piece comprises a first mounting part and a second mounting part, the first mounting part is connected with the first carrier part, the second mounting part is connected with the second carrier part, and the first mounting part and the second mounting part are both arranged in the first mounting channel.

[0021] According to the above technical features, the anode flow channel component can be installed or disassembled through the first mounting part and the first carrier part, or the cathode flow channel component can be installed or disassembled through the second mounting part and the second carrier part, which can effectively improve the operation convenience of the test tool.

[0022] In some embodiments, the first clamping part and / or the second clamping part is of transparent material.

[0023] According to the above technical features, the first clamping part and / or the second clamping part being of transparent material can facilitate the test personnel to observe the state of the anode flow channel component and the cathode flow channel component through the transparent first clamping part and / or the second clamping part.

[0024] In some embodiments, the test tool further comprises a collection plate, the collection plate is provided with a plurality of current sensors, and the collection plate is arranged between the first clamping part and the first carrier part.

[0025] According to the above technical features, the collection plate can measure the current density of the flow channel assembly in different zones through the plurality of current sensors arranged thereon, and by analyzing the data of the zoned current density, the current distribution of different zones of the flow channel assembly can be understood.

[0026] In some embodiments, the test tool further comprises a first current collecting plate and a second current collecting plate; the first current collecting plate is arranged between the first clamping part and the first seal, the first seal is of conductive material and is electrically connected with the first current collecting plate; the second current collecting plate is arranged between the second clamping part and the second seal, the second seal is of conductive material and is electrically connected with the second current collecting plate.

[0027] According to the above technical features, the test device can receive test information such as current and voltage through the first current collecting plate and the second current collecting plate, and then obtain the performance of the flow channel assembly through the test information.

[0028] In some embodiments, the test tool further comprises 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 relatively close or away from each other along a first direction, the first driving end is connected with the first clamping component, and the second driving end is connected with the second clamping component; the rotation driving device has a third driving end connected with the displacement driving device to rotate the displacement driving device.

[0029] According to the above technical features, the movement of the first driving end and the second driving end is driven by 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 accurately controlled, the sealing performance of the sealing space can be adjusted, stress concentration can be avoided, and the rotation driving device can realize the multi-angle rotation of the sealing space to realize the test on multiple working states of the flow channel assembly.

[0030] The application also provides a test device comprising the test tool, the simulation device and the detection device provided by the application, the simulation device is connected with the test tool, and the simulation device is used to simulate the working state of the flow channel assembly; the detection device is connected with the test tool, and the detection device is used to detect the state of the flow channel assembly. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 FIG. 1 is a first structural schematic diagram of a test tool provided by the application; Figure 2 FIG. 2 is a first sectional view of a test tool provided by the application; Figure 3 FIG. 3 is a second sectional view of a test tool provided by the application; Figure 4 FIG. 4 is a structural schematic diagram of a first clamping component of a test tool provided by the application; Figure 5 FIG. 5 is a structural schematic diagram of a second clamping component of a test tool provided by the application; Figure 6 FIG. 6 is a first perspective structural schematic diagram of a first seal of a test tool provided by the application; Figure 7 FIG. 7 is a second perspective structural schematic diagram of a first seal of a test tool provided by the application; Figure 8 FIG. 8 is a first perspective structural schematic diagram of a second seal of a test tool provided by the application; Figure 9 FIG. 9 is a second perspective structural schematic diagram of a second seal of a test tool provided by the application; Figure 10 FIG. 10 is a partial structural schematic diagram of a test tool provided by the application; Figure 11 A third sectional view of a test tool provided for the present application; Figure 12 A fourth sectional view of a test tool provided for the present application; Figure 13 A structural schematic view of a test tool carrier and mounting provided for the present application; Figure 14 A structural schematic view of a fourth sealing provided for the present application; Figure 15 A first perspective structural schematic view of anode and cathode flow channel components of a test tool provided for the present application; Figure 16 A second perspective structural schematic view of anode and cathode flow channel components of a test tool provided for the present application; Figure 17 A second structural schematic view of a test tool provided for the present application.

[0032] Explanation of reference numerals: 1. First clamping component; 101. First layer step board; 102. Second layer step board; 103. Third layer step board; 104. First sealing groove; 2. Second clamping component; 201. Fourth layer step board; 202. Fifth layer step board; 203. Sixth layer step board; 204. Second sealing groove; 3. Sealing structure; 301. First sealing; 3011. First through groove; 3012. First annular plate; 3013. Second annular plate; 3014. Third through groove; 302. Second sealing; 3021. Second through groove; 3022. Third annular plate; 3023. Fourth annular plate; 3024. Fourth through groove; 303. Third sealing; 4. Carrier; 401. First carrier; 402. Second carrier; 403. First carrier structure; 404. Second carrier structure; 5. Mounting; 501. First mounting; 502. Second mounting; 6. Membrane electrode layer; 7. First sliding structure; 8. Second sliding structure; 9. Collection plate; 10. First current collecting plate; 11. Second current collecting plate; 12. Displacement driving device; 1201. First driving end; 1202. Second driving end; 13. Rotation driving device; 14. Isolation plate; 15. First mounting frame; 16. Second mounting frame; 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 sealing member; 19, third sliding structure; 20, fourth sliding structure; A, first direction; B, second direction; C, first installation channel; D, sealing space; D1, cathode region; D2, anode region; E, second installation channel; F, third direction. DETAILED DESCRIPTION

[0033] In order to make the ordinary person skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0034] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application.

[0035] The present application provides a test device, which comprises a test tool, a simulation device and a detection device; the main function of the test tool is to fix the flow channel assembly of the polar plate and make 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.

[0036] The main function of the simulation device is to simulate the working environment of the flow channel assembly in the normal working state, and the simulation device can also provide extreme environment simulation for the flow channel assembly. In some possible embodiments, the simulation device can comprise a heating assembly, which can be in contact with the test tool to heat the test tool, so as to make the flow channel assembly in a high-temperature environment, thereby simulating the working state of the flow channel assembly in the high-temperature environment. In other possible embodiments, the simulation device can also comprise a pressure simulation device, and the test tool is arranged inside the pressure simulation device to simulate the working state of the flow channel assembly in an extreme pressure environment. The specific structure of the simulation device is not limited in the present application, and can be selected according to the actual situation of the test project and cost.

[0037] The main function of the detection device is to test various parameters of the flow channel assembly, and data can be sorted and summarized. In some possible embodiments, the detection device can include a plurality of sensors, for example, the plurality of sensors can include temperature sensors, pressure sensors, infrared sensors, high-speed cameras, voltage sensors, and current sensors, etc. The detection device can also include a computer device or a single-chip microcomputer device, etc. The specific type and structure of the test device are not limited in the present application, and can be limited according to the actual situation of detection accuracy and cost.

[0038] Fuel cell bipolar plates, also known as bipolar plates, are key components in the cell stack, usually located between two single cells, and have the functions of separating reaction gases, distributing gases, collecting current, conducting heat, and providing structural support. The main structure is usually a flat plate, and the material can be graphite, metal or composite. The surface of the bipolar plate is precisely machined to form a specific pattern of concave and convex structure: the convex part is called rib, which plays a supporting role for the membrane electrode and conducts current; the concave part constitutes the flow channel assembly, which is the channel for gas and liquid flow.

[0039] The flow channel assembly is the core functional component inside the bipolar plate, and common designs include straight, serpentine, interdigital, and mesh. Its main function is to uniformly deliver hydrogen and air (oxygen) to the electrode reaction area, while promptly removing the water generated by 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 local flooding or insufficient gas supply, thereby reducing cell performance. Therefore, optimizing the flow channel structure is key to improving the efficiency and stability of fuel cells.

[0040] In a fuel cell, the flow channel assembly can include a cathode flow channel and an anode flow channel, which are responsible for delivering hydrogen and air (oxygen), respectively. The structural design is crucial to cell performance. The anode flow channel guides hydrogen to be uniformly distributed to the anode catalyst layer, participates in the electrochemical reaction to generate protons and electrons, and removes unreacted hydrogen and a small amount of water; the cathode flow channel needs to deliver a large amount of air to the cathode side to support the oxygen reduction reaction, while efficiently removing the generated water to prevent flooding. Since the cathode reaction involves more complex oxygen transport and liquid water management, and the air flow is much larger than the hydrogen flow, the cathode flow channel is usually designed to be wider or use more complex structures (such as serpentine, interdigital) to enhance gas diffusion and drainage capacity, while the anode flow channel can be relatively simplified. The coordinated optimization of the two flow channels helps to improve the overall mass transfer efficiency and cell stability.

[0041] For example, Figures 1 to 17As shown, in some embodiments, the test tool comprises: 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 abut against the sealing structure 3, and the two opposite surfaces of the first clamping component 1 and the second clamping component 2 and the inner circumferential surface of the sealing structure 3 form a sealed space D. The first clamping component 1 and the second clamping component 2 can be relatively close or far away along the first direction A to provide a force to the sealing structure 3 to ensure the sealing of the sealed space D. For example, the first direction A can be the thickness direction of the first clamping component 1, or the first direction A can be the vertical direction or the horizontal direction, and the application does not limit the first direction A, which can be selected according to the specific structure of the first clamping component 1 and the second clamping component 2 and the actual situation of the test demand.

[0042] The sealing structure 3 is provided with a first installation channel C, which is 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 installation channel C. Specifically, the first installation channel C can communicate the sealed space D with the external environment. When the flow channel assembly 17 needs to be tested, the first installation channel C can be opened, and the flow channel assembly 17 can be installed into the sealed space D through the first installation channel C, and then the first installation channel C can be closed, so that the flow channel assembly 17 is in a sealed space. When the tested flow channel assembly 17 needs to be replaced, the first installation channel C can be opened, and the internal flow channel assembly 17 can be taken out, and then the flow channel assembly 17 to be replaced can be installed into the sealed space D through the first installation channel C, and the first installation channel C can be closed, so that the flow channel assembly 17 can be quickly replaced.

[0043] The first clamping component 1 and the second clamping component 2 clamp the sealing structure 3 to form a sealed space D, so as to simulate the sealing environment and the pressing force of the flow channel assembly 17 when it works normally. The first installation channel C can guide the installation of the flow channel assembly 17, and the flow channel assembly 17 can be taken out of the sealed space D or placed into the sealed space D through the first installation channel C. The test tool can be avoided to be disassembled when the flow channel assembly 17 is replaced, so as to effectively simplify the test process and the test process.

[0044] As Figure 1 and Figure 2 and Figures 6 to 9As 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.

[0045] 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.

[0046] like Figure 4 and Figure 5 As 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.

[0047] like Figure 4 and Figure 5As shown, the second clamping component 2 can include a fourth stepped plate 201, a fifth stepped plate 202, and a sixth stepped plate 203. The plate faces of the fourth, fifth, and sixth stepped plates can be rectangular and gradually decrease in size. The fifth stepped plate 202 can be disposed in the middle of the plate face of the fourth stepped plate 201, and the sixth stepped plate 203 can be disposed in the middle of the plate face of the fifth stepped plate 202, so that the fourth, fifth, and sixth stepped plates form a stepped structure. A second annular sealing groove 204 can be formed in the plate face of the fifth stepped plate 202, and a sealing ring can be disposed in the second annular sealing groove 204.

[0048] As shown, Figures 6 to 9 The first sealing member 301 and the second sealing member 302 can have the same structure. The first sealing member 301 can include a first annular plate 3012 and a second annular plate 3013 disposed on the plate face of the first annular plate 3012 and close to the edge of the outer periphery of the first annular plate 3012. The second sealing member 302 can include a third annular plate 3022 and a fourth annular plate 3023 disposed on the plate face of the third annular plate 3022 and close to the edge of the outer periphery of the third annular plate 3022.

[0049] As shown, Figures 3 to 9 During assembly, the plate face of the second stepped plate 102 of the first clamping component 1 is attached to the plate face of the first annular plate 3012 of the first sealing member 301, and the inner periphery 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 attached to the outer periphery of the second stepped plate 102 of the first clamping component 1. The plate face of the third stepped plate 103 of the first clamping component 1 is located in the space surrounded by the inner periphery of the first annular plate 3012 of the first sealing member 301.

[0050] The plate face of the fifth stepped plate 202 of the second clamping component 2 is attached to the plate face of the third annular plate 3022 of the second sealing member 302, and the inner periphery of the fourth annular plate 3023 of the second sealing member 302 surrounds the fifth stepped plate 202 of the second clamping component 2 and is attached to the outer periphery of the fifth stepped plate 202 of the second clamping component 2. The plate face of the sixth stepped plate 203 of the second clamping component 2 is located in the space surrounded by the inner periphery of the third annular plate 3022 of the second sealing member 302.

[0051] In this way, the first clamping component 1 and the second clamping component 2 are relatively close along the first direction A, the second layer stepped plate 102 and the first annular plate 3012 extrude the first sealing ring in the first sealing groove, and the fifth layer stepped plate 202 and the third annular plate 3022 extrude the second sealing ring in the second sealing groove, so that the third layer 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 sixth layer 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 sealed space D.

[0052] As shown in Figure 2 and Figures 6 to 9 In some embodiments, the first sealing member 301 is provided with a first through groove 3011 extending along the second direction B, and the second sealing member 302 is provided with a second through groove 3021 extending along the second direction B, the groove opening of the first through groove 3011 and the groove opening of the second through groove 3021 are relatively arranged along the first direction A to form a first installation channel C, and the first direction A is perpendicular to the second direction B. The groove opening of the first through groove 3011 and the groove opening of the second through groove 3021 can be spliced together, so that the first through groove 3011 and the second through groove 3021 form the first installation channel C. In this way, the process difficulty of the first installation channel C can be effectively reduced. At the same time, since the first installation channel C is formed by the first through groove 3011 and the second through groove 3021, the strength of the first sealing member 301 or the second sealing member 302 can be effectively avoided when the first installation channel C is opened on the first sealing member 301 or the second sealing member 302, and the first sealing member 301 and the second sealing member 302 can be effectively avoided from being damaged when the first clamping component 1 and the second clamping component 2 clamp the first sealing member 301 and the second sealing member 302.

[0053] 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.

[0054] like Figure 1 , Figure 2 , Figure 10 and Figure 11 As 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.

[0055] In some possible embodiments, the third seal 303 can be an elastic seal. When the third seal 303 needs to be installed, the third seal 303 can be arranged in the first installation channel C, and the mutual approach of the first clamping component 1 and the second clamping component 2 can push the mutual approach of the first seal 301 and the second seal 302 to achieve extrusion of the third seal 303, thereby achieving sealing of the first installation channel C to meet the sealing performance of the sealed space D. When the flow channel assembly 17 needs to be replaced, the force of the first clamping component 1 and the second clamping component 2 on the first seal 301 and the second seal 302 can be reduced, thereby reducing the force of the first seal 301 and the second seal 302 on the third seal 303, so that the third seal 303 can be taken out of the first installation channel C, and then the flow channel assembly 17 can be replaced. In this way, the third seal 303 can achieve opening and closing of the first installation channel C. When the third seal 303 is disassembled from the first installation channel C, the first installation channel C can be opened to achieve replacement of the flow channel assembly 17. When the third seal 303 is installed in the first installation channel C, the sealed space D can meet the sealing requirements of the flow channel assembly 17 test.

[0056] It should be noted that the first seal 301 and the second seal 302 extrude the third seal 303, and the third seal 303 will be elastically deformed. At the same time, the third seal 303 will generate an elastic force to restore the original shape, and the elastic force will act on the inner wall of the first installation channel C to generate a large friction force, thereby causing the third seal 303 to be limited in the first installation channel C. When the third seal 303 needs to be taken out of the first installation channel C, the first clamping component 1 and the second clamping component 2 only need to be slightly separated to reduce the extrusion of the first seal 301 and the second seal 302 on the third seal 303, reduce the elastic deformation of the third seal 303, and reduce the elastic force generated by the third seal 303, thereby reducing the elastic force of the third seal 303 acting on the inner wall of the first installation channel C, so that the friction force of the third seal 303 inside the first installation channel C is reduced, and the third seal 303 can be taken out of the first installation channel C. In this way, the flow channel assembly 17 can be replaced through the first installation channel C without completely disassembling the test tooling.

[0057] As Figure 2 and Figure 11As shown, in some embodiments, the test tool further comprises a membrane electrode layer 6, which is located between the first seal 301 and the second seal 302 and separates 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, and its main function is to realize the efficient performance of the electrochemical reaction. It is composed of a proton exchange membrane, a catalytic layer on both sides and a gas diffusion layer, responsible for conducting protons, blocking reaction gases, catalyzing hydrogen oxidation and oxygen reduction reactions, and conducting generated electrons to form current. Specifically, hydrogen is decomposed into protons and electrons in the anode catalytic layer, protons pass through the proton exchange membrane to the cathode, and electrons reach the cathode after doing work through the external circuit, and combine with oxygen to generate water. At the same time, the gas diffusion layer also undertakes the functions of uniform distribution of reaction gas, discharge of generated water and heat conduction. The performance of the membrane electrode layer 6 directly determines the efficiency, power density and service life of the fuel cell.

[0058] In the test tool provided in the present application, the membrane electrode layer 6 is mainly used to simulate the membrane electrode layer 6 inside the 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 the first direction A, to simulate the accommodation space in which the anode flow channel component 1701 and the cathode flow channel component 1702 are arranged in the fuel cell. Exemplarily, the cathode flow channel component 1702 and the anode flow channel component 1701 to be tested can be arranged inside the cathode region D1 and the anode region D2 respectively, to realize the test of the cathode flow channel component 1702 and the anode flow channel component 1701.

[0059] In some possible embodiments, the first clamping component 1 and the membrane electrode layer 6 can serve as the anode region D2, and the first seal 301 can be provided with a first inflow channel and a first outflow channel, when the anode flow channel component 1701 is arranged in the anode region D2, the first inflow channel can be in communication with the gas inlet of the anode flow channel component 1701, and the first outflow channel can be in communication 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 part of the reaction gas and the product can flow out from the first outflow channel. At the same time, a valve body and a flow detection sensor can also be arranged to realize the control and detection of the inflow amount of gas.

[0060] The second clamping component 2 and the membrane electrode layer 6 can form a cathode region D1, and the second sealing member 302 can be provided with a second inflow passage and a second outflow passage. When the cathode flow channel component 1702 is arranged in the cathode region D1, the second inflow passage can be in communication with the gas inlet of the cathode flow channel component 1702, and the second outflow passage can be in communication with the gas outlet of the cathode flow channel component 1702, so that oxygen can enter the cathode flow channel component 1702 through the second inflow passage, and part of the reaction gas and products can flow out of the second outflow passage. At the same time, a valve body and a flow detection sensor can be provided to control and detect the inflow of gas. At the same time, temperature measuring holes can be provided on the first sealing member 301 and the second sealing member 302, and temperature sensors can be arranged in the temperature measuring holes to measure the temperature of the test tool.

[0061] As shown in Figures 6 to 12 In some embodiments, the test tool further comprises a first current collector 10 and a second current collector 11. The first current collector 10 is arranged between the first clamping component 1 and the first sealing member 301, and the second current collector 11 is arranged between the second clamping component 2 and the second sealing member 302. The first current collector 10 and the second current collector 11 are used to collect and conduct current. During the test, the cathode flow channel component 1702 and the anode flow channel component 1701 generate current during the reaction in the sealed space D, and the current 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 can be provided with protruding structures in the second direction B to facilitate the connection of external test devices. The test device can receive current and voltage test information through the first current collector 10 and the second current collector 11, and then obtain the performance of the flow channel assembly 17 through the test information.

[0062] In some possible embodiments, the first current collector 10 can be arranged between the first stepped plate 101 and the second annular plate 3013, and the second current collector 11 can be arranged between the fourth stepped plate 201 and the fourth annular plate 3023, so as to realize the compactness of the test tool. For example, the first sealing member 301 and the second sealing member 302 can be graphite materials, and the first sealing member 301 and the second sealing member 302 can also be conductive metal materials, so that the first sealing member 301 and the second sealing member 302 can conduct the current generated by the flow channel assembly 17 after participating in the reaction to the first current collector 10 and the second current collector 11.

[0063] As shown in Figure 2 and Figures 11 to 16As shown, in some embodiments, the test tool further comprises: a carrier 4 and a mounting member 5; the carrier 4 is arranged in the sealed space D and is used to carry the flow channel assembly 17; during the test process, the flow channel assembly 17 can be arranged on the carrier 4, and the carrier 4 is matched with the first mounting channel C, so that the flow channel assembly 17 can be fixed inside the sealed space D. The mounting member 5 is arranged in the first mounting channel C and is connected with the carrier 4. It can be understood that one end of the mounting member 5 is connected with the carrier 4, and the other end can extend to the outside of the first mounting channel C away from the sealed space D. When it is necessary to replace the flow channel assembly 17, the carrier 4 can be pulled out of the sealed space D by the mounting member 5, and the flow channel assembly 17 is disassembled from the carrier 4 and replaced with a new flow channel assembly 17, and then the carrier 4 is installed in the sealed space D by the mounting member 5. For example, the carrier 4 can be integrally formed with the mounting member 5, or the carrier 4 can be welded with the mounting member 5. The specific connection mode of the carrier 4 and the mounting member 5 is not limited in the present application, and can be selected according to the process and cost and other actual conditions.

[0064] The third sealing member 303 is located between the inner wall of the first mounting channel C and the mounting member 5, and seals the gap between the mounting member 5 and the first mounting channel C. In some possible embodiments, an opening can be formed on the third sealing member 303, and the mounting member 5 is arranged in the opening so that the mounting member 5 extends out of the first mounting channel C. The first sealing member 301 and the second sealing member 302 press the third sealing member 303, so that the third sealing member 303 is tightly attached to the mounting member 5 to realize sealing, thereby ensuring the sealing performance of the sealed space D. In this way, the carrier 4 and the mounting member 5 can realize the quick installation and disassembly of the flow channel assembly 17, and effectively increase the use convenience of the test tool.

[0065] As Figure 1 , Figure 3 , Figure 10 , Figure 12 and Figure 13As shown, in some embodiments, the flow channel assembly includes a first flow channel component 1703 and a second flow channel component 1704 which are detachably connected, specifically, in some cases, during the testing process of the flow channel assembly, partial replacement of the flow channel assembly is required, and detachable connection of the first flow channel component 1703 and the second flow channel component 1704 can enable the first flow channel component 1703 or the second flow channel component 1704 to be replaced when partial replacement of the flow channel is required. In some possible embodiments, the first flow channel component 1703 and the second flow channel component 1704 can be connected by sliding through a sliding groove, and the first flow channel component 1703 and the second flow channel component 1704 can also be directly spliced or magnetically connected. A part of the sealing material, such as rubber or plastic, etc., can be arranged at the connection of the first flow channel component 1703 and the second flow channel component 1704 to ensure the sealing of the first flow channel component 1703 and the second flow channel component 1704 when connected.

[0066] The sealing structure 3 is also provided with a second installation channel E which is in communication with the sealing space. Exemplarily, the extension direction of the second installation channel E can be perpendicular to the second direction B and the first direction A, and the extension direction of the second installation channel E can be the third direction F. The main purpose of the second installation channel E is to enable the first flow channel component 1703 or the second flow channel component 1704 which needs to be replaced to be taken out of the sealing space. As shown, Figures 6 to 9 As shown, in some possible embodiments, the first sealing member 301 and the second sealing member 302 can be provided with a third through groove 3014 and a fourth through groove 3024, and the slot of the third through groove 3014 and the slot of the fourth through groove 3024 are oppositely arranged to form the second installation channel E.

[0067] The carrier 4 includes a first carrier structure 403 and a second carrier structure 404 which are detachably connected, the first carrier structure 403 is used to connect the first flow channel component 1703, and the second carrier structure 404 is used to connect the second flow channel component 1704. Exemplarily, the first carrier structure 403 and the second carrier structure 404 can be detachably connected by magnetic connection, and the first carrier structure 403 and the second carrier structure 404 can also be detachably connected by a sliding groove, and the specific connection mode of the first carrier structure 403 and the second carrier structure 404 is not limited in the present application. It is necessary to ensure that the first carrier structure 403 is in the connected state with the second carrier structure 404 when the first carrier structure 403 moves along the second direction, so that the first carrier structure 403 can drive the second carrier structure 404 to be taken out to the outside of the sealing space through the first installation channel. When the second carrier structure 404 needs to be detached, the second carrier structure 404 can be moved along the third direction F to be taken out.

[0068] The connection relationship between the first bearing structure 403 and the first flow channel component 1703 can be welding or clamping by a clamping groove, and similarly, the connection relationship between the second bearing structure 404 and the second flow channel component 1704 can also be welding or clamping by a clamping groove. When the first bearing structure 403 is connected with the second bearing structure 404, the first flow channel component 1703 and the second flow channel component 1704 are spliced together to realize the normal flow channel function. When the second bearing structure 404 is disassembled relative to the first bearing structure 403 along the third direction F, the second bearing structure 404 can drive the second flow channel component 1704 to move together to separate the second flow channel component 1704 from the first flow channel component. Along the axis of the second mounting channel E, the projection of the second bearing structure 404 is located in the projection of the second mounting channel E, which can be understood that the size of the second bearing structure 404 perpendicular to the third direction F needs to be smaller than the size of the second mounting channel E perpendicular to the third direction F. It should be noted that the size of the second flow channel component 1704 perpendicular to the third direction F also needs to be smaller than the size of the second mounting channel E perpendicular to the third direction F, so that the second bearing structure 404 and the second flow channel component 1704 can be taken out from the second mounting channel E together, to facilitate the replacement of the local second flow channel component 1704.

[0069] As Figure 1 , Figure 3 , Figure 10 , Figure 12 , Figure 13 and Figure 14 , in some embodiments, the carrier 4 further comprises a fourth sealing member 18, which is detachably sealingly connected in the second mounting channel E. The main function of the fourth sealing member 18 is to seal the second mounting channel E to maintain the sealing condition of the sealed space. For example, the fourth sealing member 18 can be an elastic sealing component, which is fitted in the second mounting channel E to realize the sealing of the second mounting channel E.

[0070] The carrier 4 further comprises a first sliding structure 7 and a second sliding structure 8, the first sliding structure 7 is arranged on the first bearing structure 403, and the second sliding structure 8 is arranged on the second bearing structure 404. The first sliding structure 7 and the second sliding structure 8 are arranged along the second direction, and the fourth sealing member 18 is provided with a third sliding structure 19. When the first bearing 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, and 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.

[0071] It can be understood that the first sliding structure 7 and the second sliding structure 8 constitute a sliding groove or a sliding block extending along the second direction, and the third sliding structure 19 on the fourth sealing element 18 can be in sliding connection with 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, so that the first bearing structure 403 and the second bearing structure 404 can slide along the second direction B relative to the fourth sealing element 18. So that the bearing 4 can be completely taken out of the first installation channel C.

[0072] When the second bearing structure 404 needs to be disassembled from the second flow channel component 1704, the bearing 4 is completely located in the sealed space, the second sliding structure 8 is connected with the third sliding structure 19, at this time, the second sliding structure 8 has the freedom along the second direction B, but is limited in the third direction F by the third sliding structure 19, so that when the fourth sealing element 18 is pulled outward along the third direction F, the fourth sealing element 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 through the third sliding structure 19.

[0073] In some possible embodiments, the first bearing part and the second bearing part can be a rectangular frame spliced along the second direction, the length direction of the rectangular frame is 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, and the second sliding structure 8 and the first sliding structure 7 can be T-shaped sliding blocks extending along the second direction. The inner wall opposite to the first sliding structure 7 and the second sliding structure 8 of the sealing structure 3 is provided with a T-shaped groove, and the third sliding structure 19 can also be a T-shaped groove. When the fourth sealing element 18 is arranged in the second installation channel E, the third sliding structure 19 can seal the groove arranged on the inner wall opposite to the first sliding structure 7 and the second sliding structure 8 of the sealing structure 3 to form a sliding groove extending along the second direction B, and the sliding groove is in sliding connection with 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 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 sealing element 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.

[0074] In some possible embodiments, a fourth sliding structure 20 can also be arranged on the other side of the width direction of the rectangular frame, and the fourth sliding structure 20 can also be a T-shaped sliding block, and a groove is arranged on the inner wall of the sealing structure 3 facing the fourth sliding structure 20, so that the fourth sliding structure 20 is in sliding connection with the groove. For example, Figure 2 and Figures 11 to 16As shown, in some embodiments, the carrier 4 comprises a first carrier portion 401 for carrying the anode flow channel component 1701 of the flow channel assembly 17 and located within the anode region D2, and a second carrier portion 402 for carrying the cathode plate of the flow channel assembly 17 and located within the cathode region D1; in some possible embodiments, the first carrier portion 401 can be a carrier frame, and the anode flow channel component 1701 can be connected with the inner circumferential surface of the first carrier portion 401 to realize the carrying of the first carrier portion 401 on the anode flow channel component 1701. For example, the connection between the first carrier portion 401 and the anode flow channel component 1701 can be detachable connection through a clamping groove, and the connection between the first carrier portion 401 and the anode flow channel component 1701 can also be connection through a sliding channel and a limiting piece, and the application does not specifically limit the connection relationship between the first carrier portion 401 and the anode flow channel component 1701, which can be selected according to the actual needs of process and cost.

[0075] The second carrier portion 402 can also be the same carrier frame as the first carrier portion 401, and the cathode flow channel component 1702 can be connected with the inner circumferential surface of the second carrier portion 402. For example, the connection between the second carrier portion 402 and the cathode flow channel component 1702 can be detachable connection through a clamping groove, and the connection between the second carrier portion 402 and the cathode flow channel component 1702 can also be connection through a sliding channel and a limiting piece, and the application does not specifically limit the connection relationship between the second carrier portion 402 and the cathode flow channel component 1702, which can be selected according to the actual needs of process and cost. When the first carrier portion 401 is arranged in the anode region D2, the flow channel of the anode flow channel component 1701 can face the first clamping component 1, and similarly, when the second carrier portion 402 is arranged in the cathode region D1, the flow channel of the cathode flow channel component 1702 can face the second clamping component 2.

[0076] In some possible embodiments, the first carrier portion 401 and the second carrier portion 402 can be the same structure, and the first carrier portion 401 and the second carrier portion 402 can be provided with the first carrier structure 403 and the second carrier structure 404, and correspondingly, the first carrier portion 401 and the second carrier portion 402 can also be provided with the first sliding structure 7 and the second sliding structure 8, so that the second carrier structure 404 of the first carrier portion 401 and / or the second carrier portion 402 can be detached or installed from the second mounting channel E through the first sliding structure 7 and the second sliding structure 8.

[0077] The mounting member 5 comprises a first mounting portion 501 and a second mounting portion 502, the first mounting portion 501 is connected with the first bearing portion 401, the second mounting portion 502 is connected with the second bearing portion 402, and the first mounting portion 501 and the second mounting portion 502 are both arranged in the first mounting channel C. In some possible embodiments, the first mounting portion 501 and the first bearing portion 401 can be integrally formed, and the second mounting portion 502 and the second bearing portion 402 can also be integrally formed. In other possible embodiments, the first mounting portion 501 and the first bearing portion 401 can also be welded, and similarly, the second mounting portion 502 and the second bearing portion 402 can also be welded. The specific connection mode of the first mounting portion 501 and the first bearing portion 401 and the second mounting portion 502 and the second bearing portion 402 is not limited in the application, and can be selected according to the actual needs of process and cost and the like.

[0078] In this way, the anode flow channel component 1701 can be mounted or dismounted by the first mounting portion 501 and the first bearing portion 401 alone, or the cathode flow channel component 1702 can be mounted or dismounted by the second mounting portion 502 and the second bearing portion 402 alone, which can effectively improve the operation convenience of the test tool.

[0079] In some embodiments, the first clamping component 1 and / or the second clamping component 2 are made of transparent material. The purpose of this arrangement is to facilitate the test personnel to observe the state of the anode flow channel component 1701 and the cathode flow channel component 1702 through the transparent first clamping component 1 and / or the second clamping component 2. In some possible embodiments, the second clamping component 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 reaction. In order to observe the drainage condition inside the cathode flow channel component 1702, the second clamping component 2 can be made of transparent material to observe the condition inside the cathode flow channel component 1702 through the second clamping component 2.

[0080] As shown in FIG. 1, Figure 11 In some embodiments, the test tool further comprises a collection plate 9, the collection plate 9 is provided with a plurality of current sensors, and the collection plate 9 is arranged between the first clamping component 1 and the first bearing portion 401. The collection plate 9 can measure the current density of the flow channel assembly 17 in different zones through the plurality of current sensors arranged thereon. By analyzing the data of the current density in different zones, the current distribution condition of different zones of the flow channel assembly 17 can be understood. At the same time, arranging the collection plate 9 between the first clamping component 1 and the first bearing portion 401 can avoid that the collection plate 9 blocks the test personnel from observing the drainage condition of the cathode flow channel component 1702 through the transparent second clamping component 2.

[0081] In some possible embodiments, two test fixtures can be included, the two test fixtures are arranged along the second direction B, the first clamping part 1 of the first test fixture is connected with the first clamping part 1 of the second test fixture along the second direction B, and the second clamping part 2 of the first test fixture is connected with the second clamping part 2 of the second test fixture along the second direction B. Meanwhile, the isolation plate 14 can be arranged to separate the sealed space D of the first test fixture from the sealed space D of the second test fixture.

[0082] As shown in Figure 2 and Figure 17 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 relatively approach or move away from each other along the first direction A, the first driving end 1201 is connected with the first clamping part 1, and the second driving end 1202 is connected with the second clamping part 2. In this way, by driving the movement of the first driving end 1201 and the second driving end 1202 through the displacement driving device 12, the automatic movement of the first clamping part 1 and the second clamping part 2 can be realized, the clamping force of the first clamping part 1 and the second clamping part 2 on the first sealing element 301 and the second sealing element 302 can be accurately controlled, and then the sealing performance of the sealed space D can be adjusted, and stress concentration can be avoided.

[0083] In some possible embodiments, the displacement driving device 12 can be a ball screw assembly, and two ball nuts can be arranged on the ball screw assembly, and the two ball nuts can be respectively used as the first driving end 1201 and the second driving end 1202. The driving device can also be two cylinders, the two cylinders are arranged relatively along the first direction A, and the driving ends of the two cylinders can be respectively used as the first driving end 1201 and the second driving end 1202. The specific structure of the displacement driving device 12 is not limited in the present application, and can be selected according to the process and cost and other actual situations.

[0084] In some possible embodiments, the test fixture can also be provided with a first mounting frame 15 and a second mounting frame 16. The first mounting frame 15 can be arranged on the side of the first clamping part 1 away from the second clamping part 2, the second mounting frame 16 can be arranged on the side of the second clamping part 2 away from the first clamping part 1, the first driving end 1201 can be connected with the first mounting frame 15 through threading or welding, and the second driving end 1202 can also be connected with the second mounting frame 16 through threading or welding. Meanwhile, heating installation holes can be arranged on the first mounting frame 15 and the second mounting frame 16, and heating rods can be arranged in the heating installation holes to heat the test fixture to simulate the high-temperature working environment of the fuel cell.

[0085] The rotation driving device 13 has a third driving end connected with the displacement driving device 12 to rotate the displacement driving device 12. The main function of the rotation driving device 13 is to rotate the sealed space D to simulate the state of the flow channel assembly 17 in different placement states of the fuel cell. For example, the rotation driving device 13 can be a rotation motor, the driving end of which can be the third driving end. The displacement driving device 12 can be connected with the third driving end through a connecting support to make the sealed space D at different angles.

[0086] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A test fixture, characterized by, The test tool comprises: a first clamping component (1) and a second clamping component (2), which are arranged along a first direction (A); a sealing structure (3) surrounding the first clamping component (1) and the second clamping component (2) to enclose a sealed space (D), the sealing structure (3) being provided with a first mounting channel (C) in communication with the sealed space (D) to enable a flow channel assembly (17) to be mounted into the sealed space (D) through the first mounting channel (C); a third seal (303) detachably arranged in the first mounting channel (C); a carrier (4) arranged in the sealed space (D) for carrying the flow channel assembly (17); a mounting member (5) arranged in the first mounting channel (C) and connected with the carrier (4), the third seal (303) being located between the inner wall of the first mounting channel (C) and the mounting member (5) and sealing the gap between the mounting member (5) and the first mounting channel (C).

2. The test fixture of claim 1, wherein, The sealing structure (3) comprises: a first seal (301) surrounding the first clamping component (1) and connected with the first clamping component (1); a second seal (302) surrounding the second clamping component (2) and connected with the second clamping component (2), the first seal (301), the second seal (302), the first clamping component (1) and the second clamping component (2) enclosing the sealed space (D).

3. The test tool according to claim 2, wherein: the first seal (301) is provided with a first through groove (3011) extending along a 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) being oppositely arranged along the first direction (A) to enclose the first mounting channel (C), the first direction (A) being perpendicular to the second direction (B).

4. The test fixture of claim 1, wherein, The flow channel assembly comprises a first flow channel component (1703) and a second flow channel component (1704) detachably connected; the sealing structure (3) is further provided with a second mounting channel (E) in communication with the sealed space (D); the carrier (4) comprises: A first bearing structure (403) and a second bearing structure (404), the first bearing structure (403) and the second bearing structure (404) are detachably connected, along the axis of the second mounting channel (E), the projection of the second bearing structure (404) is located within the projection of the second mounting channel (E), the first bearing structure (403) is used for connecting the first flow channel component (1703), the second bearing structure (404) is used for connecting the second flow channel component (1704), the first bearing structure (403) can drive the second bearing structure (404) to move along the second direction (B), the second direction (B) is consistent with the axial direction of the first mounting channel (C).

5. The test fixture of claim 4, wherein, The bearing (4) further comprises: A first sliding structure (7) and a second sliding structure (8), the first sliding structure (7) is arranged on the first bearing structure (403), the second sliding structure (8) is arranged on the second bearing structure (404), the first sliding structure (7) and the second sliding structure (8) are arranged along the second direction; A fourth sealing member (18), the fourth sealing member (18) is detachably connected in the second mounting channel (E), the fourth sealing member (18) can slide along the third direction (F), the third direction (F) is consistent with the axial direction of the second mounting channel (E), the fourth sealing member (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) 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).

6. The test fixture of any of claims 2-5, wherein, The test tool further comprises: A membrane electrode layer (6), the membrane electrode layer (6) is located between the first sealing member (301) and the second sealing member (302), and divides the sealing space (D) into a cathode region (D1) and an anode region (D2); A bearing (4), the bearing (4) comprises a first bearing part (401) and a second bearing part (402), the first bearing part (401) is used for bearing the anode flow channel component (1701) of the flow channel assembly (17), and is located in the anode region (D2), the second bearing part (402) is used for bearing the cathode flow channel component (1702) of the flow channel assembly (17), and is located in the cathode region (D1); A mounting member (5), the mounting member (5) comprises a first mounting part (501) and a second mounting part (502), the first mounting part (501) is connected with the first bearing part (401), the second mounting part (502) is connected with the second bearing part (402), the first mounting part (501) and the second mounting part (502) are both arranged in the first mounting channel (C).

7. The test fixture of claim 1, wherein The first clamping component (1) and / or the second clamping component (2) are transparent materials.

8. The test fixture of claim 6, wherein, Further comprising: a collection plate (9) provided with a plurality of current sensors, the collection plate (9) being arranged between the first clamping component (1) and the first bearing portion (401); and / or a first current collecting plate (10) arranged between the first clamping component (1) and a first sealing member (301), the first sealing member (301) being an electrically conductive material and being electrically connected with the first current collecting plate (10); a second current collecting plate (11) arranged between the second clamping component (2) and a second sealing member (302), the second sealing member (302) being an electrically conductive material and being electrically connected with the second current collecting plate (11).

9. The test fixture of claim 1, wherein, Further comprising: a displacement driving device (12) having a first driving end (1201) and a second driving end (1202), the first driving end (1201) and the second driving end (1202) being capable of relatively approaching or moving away from each other along a first direction (A), the first driving end (1201) being connected with the first clamping component (1), and the second driving end (1202) being connected with the second clamping component (2); a rotation driving device (13) having a third driving end, the third driving end being connected with the displacement driving device (12) to rotate the displacement driving device (12).

10. A test apparatus, characterized by, including: the test tool according to any one of claims 1-9; a simulation device connected with the test tool, the simulation device being used for simulating a working state of the flow passage assembly; a detection device connected with the test tool, the detection device being used for detecting a state of the flow passage assembly.

Images