Fluid testing device for fuel cell polar plates and fluid testing system

Abstract

The application relates to the technical field of fuel cell testing, in particular to a fluid testing device and a fluid testing system. The fluid testing device comprises a shell assembly, a plurality of flow channel mounting pieces and a sealing assembly. An assembly cavity is formed in the shell assembly, and a fluid inlet and a fluid outlet are formed on the shell assembly and communicate with the assembly cavity. The plurality of flow channel mounting pieces are arranged in an array in the assembly cavity, and a sub-channel is formed on each flow channel mounting piece. The plurality of sub-channels cooperate to form a plurality of parallel and independent main channels, and the two ends of each main channel are arranged correspondingly to the fluid inlet and the fluid outlet. A flow disturbance structure is formed in the sub-channel of at least one flow channel mounting piece. The sealing assembly is used to detachably connect adjacent flow channel mounting pieces. In this way, the position or quantity of the flow channel mounting pieces with the flow disturbance structure can be flexibly and quickly adjusted according to different test requirements, and the flexibility and convenience of the fluid testing device are effectively improved.

Description

Technical Field

[0001] This application relates to the field of fuel cell testing technology, specifically to a fluid testing device and system for fuel cell plates. Background Technology

[0002] Fuel cell plates are the core components of a fuel cell stack, undertaking multiple functions such as distributing reactant gases, conducting current, dissipating heat, and managing water. Their design directly determines the uniformity of the cell reaction, mass transfer efficiency, and overall performance. The flow channels on the plate surface are even more crucial to fuel cell performance. A reasonable flow channel design not only affects the uniformity of reactant gas distribution on the electrode surface but also directly impacts the cell's mass transfer efficiency, water management capabilities, and the stability of the electrochemical reaction.

[0003] Incorporating a turbulence-inducing structure within the flow channel can significantly enhance the turbulence level and improve the contact efficiency between the reactant gas and the electrode surface. Furthermore, the turbulence-inducing structure can also promote the discharge of liquid water and mitigate battery flooding issues by enhancing the shearing effect of the gas-liquid two-phase flow.

[0004] Currently, specialized testing fixtures are mainly used to simulate and verify the impact of flow disturbance structures on the overall performance of the flow channel. However, existing testing equipment cannot flexibly and quickly adjust the position of the flow disturbance structure within the flow channel according to experimental requirements, which reduces the flexibility and convenience of using specialized testing fixtures and severely restricts the efficiency and effectiveness of testing. Summary of the Invention

[0005] One objective of this application is to provide a fluid testing device for fuel cell plates to solve the problem in the prior art that the position of the turbulence structure cannot be flexibly and quickly adjusted according to test requirements; the second objective is to provide a fluid testing system.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A fluid testing device for fuel cell plates includes a housing assembly, multiple flow channel mounting components, and a sealing assembly. The housing assembly has an assembly cavity, and a fluid inlet and a fluid outlet respectively communicating with the assembly cavity. Multiple flow channel mounting components are arranged in an array within the assembly cavity. Each flow channel mounting component has a sub-channel formed, and the multiple sub-channels cooperate to form multiple parallel and independent main channels. Each main channel has its two ends corresponding to the fluid inlet and the fluid outlet, respectively. At least one flow channel mounting component has a turbulence-inducing structure formed within its sub-channel. The sealing assembly is used to detachably connect adjacent flow channel mounting components.

[0007] Based on the aforementioned technical means, the sealing assembly can detachably assemble multiple flow channel mounting components in an array within the assembly cavity. Operators can easily and quickly remove the flow channel mounting components from the assembly cavity, thereby flexibly and quickly adjusting the position or number of flow channel mounting components with turbulence structures according to different test requirements. Flow channel mounting components with turbulence structures in different main channels can also be freely spliced ​​and assembled. This effectively improves the flexibility and convenience of using the fluid testing device, as well as the testing efficiency and test results of the fluid testing device.

[0008] Furthermore, a first mounting groove is formed on the first sidewall of the flow channel mounting component, and the sealing assembly includes a first sealing element. A first mounting portion is provided on each of the opposite sides of the first sealing element. The first mounting portion is respectively inserted into the first mounting groove of the flow channel mounting component adjacent along a first direction, where the first direction is the width direction of the assembly cavity.

[0009] According to the aforementioned technical means, the insertion and engagement between the first mounting groove on the flow channel mounting component and the first mounting portion on the first seal allows adjacent flow channel mounting components along the first direction to be tightly connected, thereby ensuring the stability of the assembly of multiple flow channel mounting components in the first direction. Furthermore, it also separates the main channels, effectively preventing gas cross-contamination within each main channel and significantly improving the accuracy of the fluid testing device's testing structure. Moreover, the independent assembly of each flow channel mounting component along the first direction via the first seal greatly enhances the convenience and flexibility of disassembly and assembly, fully meeting diverse testing needs.

[0010] Furthermore, the flow channel mounting member has adjacent first sidewalls and second sidewalls, and a second mounting groove is formed on the second sidewall. The sealing assembly includes a second sealing member, and the second sealing member has a second mounting portion for insertion into the second mounting groove of the flow channel mounting member adjacent to it along a second direction, the second direction being the length direction of the assembly cavity.

[0011] According to the aforementioned technical means, the insertion and engagement between the second mounting groove on the flow channel mounting component and the second mounting portion on the second seal allows adjacent flow channel mounting components along the second direction to be tightly connected, thereby ensuring the stability of the assembly among multiple flow channel mounting components in the second direction. Furthermore, each flow channel mounting component in the second direction can be independently assembled using the second seal, greatly improving the convenience and flexibility of disassembly and assembly of the flow channel mounting components, fully meeting different testing needs.

[0012] Furthermore, the second seal also has a spacer portion formed on the second mounting portion, the upper wall of the spacer portion being recessed inward to form a groove, the groove being used to connect the sub-channels on adjacent flow channel mounting members along the second direction.

[0013] According to the above-mentioned technical means, the groove formed on the spacer can avoid interference and influence on the flow of fluid, effectively improve the rationality of the structure layout of the second seal, and ensure the accuracy of the fluid testing device.

[0014] Furthermore, a third mounting groove is formed on the first sealing member to match the second mounting portion, and the second mounting portion is used to insert into the third mounting groove.

[0015] According to the above technical means, the connection between the first seal and the second seal can be realized by the insertion connection between the second mounting part and the third mounting groove. Since the first seal can also be connected to the flow channel mounting part, and the flow channel mounting part can also be connected to the second seal, a tight connection between the flow channel mounting part, the first seal and the second seal can be realized, which significantly improves the overall structural strength and sealing performance.

[0016] Furthermore, the housing assembly includes a base plate, the upper surface of which is recessed inward to form the assembly cavity. The fluid inlet includes a gas inlet, and the gas inlet and the fluid outlet are respectively formed on the side wall of the base plate. The gas inlet is connected to the main channel through a first opening located on the bottom of the assembly cavity, and the fluid outlet is connected to the main channel through a second opening located on the bottom of the assembly cavity.

[0017] According to the above technical means, the gas inlet can be used to deliver gas into the main channel, and the gas can enter the main channel through the first port and exit through the fluid outlet through the second port. This can achieve smooth gas flow, thereby enabling the testing and analysis of the gas performance of the turbulence structure in the main channel, effectively ensuring the testing effect of the fluid testing device.

[0018] Furthermore, the housing assembly also includes a cover plate that covers the base plate, and the fluid inlet also includes a liquid inlet formed on the side wall of the cover plate. The liquid inlet is connected to the main channel through a third opening located on the cover plate.

[0019] According to the above technical means, the liquid inlet can be used to deliver liquid into the main channel, and the liquid can enter the main channel through the third port and exit through the fluid outlet through the second port. This can achieve smooth flow of liquid, thereby enabling the testing and analysis of the liquid performance of the turbulence structure in the main channel, further ensuring the testing effect of the fluid testing device.

[0020] Furthermore, the fluid testing device also includes a membrane electrode assembly located between the base plate and the cover plate. The membrane electrode assembly is provided with a membrane electrode corresponding to the main channel, and the membrane electrode is used to allow liquid from the liquid inlet to permeate into the main channel.

[0021] Based on the aforementioned technical methods, liquid can permeate through the membrane electrode into the main channel, thus simulating the process of liquid generation and entry into the main channel under actual conditions. This makes the testing process closer to real-world usage scenarios and effectively improves the accuracy of the fluid testing device. Furthermore, by observing the process of liquid permeating from the membrane electrode and subsequently entering the main channel with the gas, the liquid performance of the turbulence structure can be further tested and analyzed.

[0022] Furthermore, the housing assembly includes a cover plate, and the upper wall of the spacer portion protrudes outward to form a protrusion for abutting against the cover plate.

[0023] Based on the above technical means, the protrusions on the partition can separate the main channels from each other, effectively preventing gas from flowing between the main channels and further improving the accuracy of the test results of the fluid testing device.

[0024] Furthermore, at least one cavity sidewall of the assembly cavity is configured as an open side, and the sealing assembly includes a third seal for sealing the open side.

[0025] According to the above-mentioned technical means, the flow channel mounting component, the first seal, and the second seal can all be installed and removed from the open side of the assembly cavity. When it is necessary to adjust the specific position of the flow channel mounting component with the turbulence-causing structure, the operator can directly make the adjustment through the open side of the assembly cavity without disassembling the entire housing assembly, which effectively simplifies the assembly process of the flow channel mounting component and improves the assembly efficiency of the flow channel mounting component.

[0026] Furthermore, the flow channel mounting component and / or the cover plate are made of a transparent material.

[0027] Based on the aforementioned technical means, flow channel mounting components and / or covers made of transparent materials can effectively eliminate the obstruction of vision by the flow channel mounting components and / or covers, thereby allowing for direct observation of the flow of gas or liquid in the main channel, providing intuitive evidence for subsequent analysis and judgment.

[0028] A fluid testing system includes a clamping device and a fluid testing apparatus, the clamping device being used to apply forces to the housing assembly and the sealing assembly respectively, so as to seal the housing assembly and the sealing assembly together.

[0029] Based on the above technical means, the clamping device can apply force to the housing assembly and the sealing assembly respectively, so as to eliminate the gap between the components by squeezing, which significantly improves the overall sealing performance of the fluid testing device, effectively avoids the leakage or cross-contamination of fluid during the test, and ensures the accuracy and reliability of the test results.

[0030] Furthermore, the fluid testing system also includes a controller and a flow control device. The flow control device includes a flow detection element and a flow control element, which are electrically connected to the controller respectively. The flow control element is disposed at the fluid inlet. The flow detection element is used to acquire flow information in the assembly cavity. The controller controls the opening and closing angle of the flow control element based on the flow information.

[0031] Based on the above technical means, by cooperating with flow detection devices and flow control devices, the flow rate of gas or liquid can be flexibly controlled according to the test requirements. This allows for the testing and analysis of the gas and liquid performance of the turbulence structure under different operating conditions, effectively improving the test versatility and detection accuracy of the fluid testing system.

[0032] Furthermore, the fluid testing system also includes an image acquisition device, and a transparent observation area is formed on the clamping device, with the image acquisition device positioned corresponding to the transparent observation area.

[0033] Based on the aforementioned technical means, the image acquisition device can be set up in a transparent observation area. Through the transparent observation area, the image acquisition device can observe the drainage performance of the turbulence structure in the main channel and the breakage of droplets, providing a reliable and objective basis for subsequent analysis.

[0034] Furthermore, the fluid testing system also includes a smoke generator, which is located at the fluid inlet.

[0035] Based on the above technical means, the flow trajectory of gas in the main channel can be intuitively presented through the smoke generating device, clearly reflecting the flow state of the gas, which facilitates the accurate determination of the gas performance of the turbulence structure and provides an intuitive and reliable test basis for the performance analysis of the turbulence structure.

[0036] The beneficial effects of this application are: The sealing assembly allows for the detachable assembly of multiple flow channel mounting components in an array within the assembly cavity. Operators can easily and quickly remove the flow channel mounting components from the assembly cavity, enabling flexible and rapid adjustment of the position or number of flow channel mounting components with turbulence structures according to different test requirements. Flow channel mounting components with turbulence structures in different main channels can also be freely spliced ​​and assembled. This effectively improves the flexibility and convenience of using the fluid testing device, as well as the testing efficiency and effectiveness of the fluid testing device. Attached Figure Description

[0037] Figure 1 Three-dimensional representation of the fluid testing device in the embodiments of this application Figure 1 ; Figure 2 This is an exploded view of the fluid testing apparatus according to an embodiment of this application; Figure 3 Three-dimensional representation of the fluid testing device in the embodiments of this application Figure 2 (Excluding cover plate); Figure 4 Three-dimensional representation of the fluid testing device in the embodiments of this application Figure 3 (Excluding cover plate); Figure 5 This is a perspective view of the flow channel mounting component according to an embodiment of this application; Figure 6 This is a perspective view of the first sealing element according to an embodiment of this application; Figure 7 This is a perspective view of the assembly of the flow channel mounting component and the first sealing component according to an embodiment of this application; Figure 8 This is a perspective view of the second sealing element according to an embodiment of this application; Figure 9 This is a perspective view of the membrane electrode assembly according to an embodiment of this application; Figure 10 Three-dimensional representation of the fluid testing device in the embodiments of this application Figure 4 (Excluding cover plate); Figure 11 This is a perspective view of the cover plate according to an embodiment of this application; Figure 12 This is a perspective view of the third sealing element in the embodiment of this application; Figure 13 This is a schematic diagram of the clamping device according to an embodiment of this application.

[0038] Among them, 1. Shell assembly; 11. Assembly cavity; 111. First port; 112. Second port; 113. Open side; 12. Fluid inlet; 121. Gas inlet; 122. Liquid inlet; 13. Fluid outlet; 14. Base plate; 15. Cover plate; 151. Third port; 2. Flow channel mounting component; 21. Sub-channel; 211. Turbulence structure; 22. First sidewall; 221. First mounting groove; 23. Second sidewall; 231. Second mounting groove; 3. Sealing assembly; 31. First seal; 311. First mounting portion; 312. Third mounting groove; 32. Second seal; 321. Second mounting portion; 322. Spacer; 3221. Groove; 3222. Protrusion; 4. Membrane electrode assembly; 41. Membrane electrode; 5. Third sealing element; 6. Clamping device; 61. Vertical clamping plate; 62. Horizontal clamping plate; 63. Transparent observation area; X, first direction; Y, the second direction. Detailed Implementation

[0039] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0040] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0041] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0042] To address the technical problem in existing technologies where the position of the flow disturbance structure within the flow channel cannot be flexibly and quickly adjusted according to experimental requirements, such as... Figures 1 to 4 As shown in the figure, this application provides a fluid testing device for fuel cell plates. The fluid testing device includes a housing assembly 1, multiple flow channel mounting components 2, and a sealing assembly 3.

[0043] The aforementioned housing assembly 1 has an assembly cavity 11 formed within it, and a fluid inlet 12 and a fluid outlet 13 are formed on the housing assembly 1, respectively communicating with the assembly cavity 11. Fluid can enter the assembly cavity 11 through the fluid inlet 12 and then exit through the fluid outlet 13. The fluid can be in either a liquid or a gaseous state. Both liquid and gas can be discharged through the fluid outlet 13.

[0044] The aforementioned multiple flow channel mounting components 2 are arranged in an array within the assembly cavity 11, such as... Figure 3 As shown, Figure 3 The diagram shows multiple flow channel mounting components 2 arranged in rows. It is understood that the multiple flow channel mounting components 2 arranged in rows can also be arranged sequentially in multiple rows to assemble and fill the assembly cavity 11. The multiple rows of sequentially arranged flow channel mounting components 2 are not... Figure 3 As shown in the image.

[0045] Each flow channel mounting component 2 has a sub-channel 21 formed thereon. Multiple sub-channels 21 cooperate to form multiple parallel and independent main channels. The flow channel mounting components 2 can be made of materials such as plexiglass. The upper surface of each flow channel mounting component 2 can be recessed inward to form a sub-channel 21, which can be used for the flow of liquids and gases. The sub-channels 21 of flow channel mounting components 2 located in the same row can be connected sequentially to form a main channel. Figure 3 As shown in the example, Figure 3 The middle assembly cavity 11 can have 6 main channels arranged in parallel.

[0046] Each main channel has a fluid inlet 12 and a fluid outlet 13 at its two ends. Fluid can flow into the corresponding main channel through the fluid inlet 12 and then flow through the main channel to the fluid outlet 13, and then be discharged through the fluid outlet 13.

[0047] At least one sub-channel 21 of the flow channel mounting component 2 has a turbulence structure 211 formed therein. This turbulence structure 211 can significantly enhance the turbulence of the gas in the main channel, promoting the contact efficiency between the gas and the electrode surface. Furthermore, the turbulence structure 211 can also improve the problem of electrode flooding by enhancing the shearing action between the gas and liquid, thus promoting liquid discharge. The shape of the turbulence structure 211 can be cylindrical, elongated, etc., and this application does not specifically limit this. The number and location of the turbulence structures 211 in the sub-channel 21 can be reasonably selected by those skilled in the art based on actual use. This allows for direct comparison of the fluid performance of main channels containing turbulence structures 211 of different shapes, numbers, and locations, thereby improving the efficiency of electrode optimization design and promoting the innovation and verification of novel electrode structures.

[0048] It is understandable that only one flow channel mounting component 2 with a turbulence-disrupting structure 211 can be installed in the assembly cavity 11 to test the fluid performance of a single turbulence-disrupting structure 211. Alternatively, flow channel mounting components 2 with turbulence-disrupting structures 211 can be installed in different main channels within the assembly cavity 11 to visually compare the fluid performance of the turbulence-disrupting structure 211 at different assembly positions.

[0049] The aforementioned sealing assembly 3 can be used to detachably connect adjacent flow channel mounting pieces 2. It is understood that the sealing assembly 3 can not only detachably and sealingly connect adjacent flow channel mounting pieces 2 along the row direction, thereby tightly connecting sub-channels 21 located in the same column, but also detachably and sealingly connect adjacent flow channel mounting pieces 2 along the column direction, thereby separating multiple parallel main channels from each other. Furthermore, when it is necessary to adjust the placement of the flow-disrupting structure 211, the operator can, according to testing requirements, individually disassemble the flow channel mounting piece 2 with the flow-disrupting structure 211 and flexibly install it to the designated position, thereby completing the adjustment of the position of the flow-disrupting structure 211.

[0050] The fluid testing device of this application allows the sealing assembly 3 to detachably assemble multiple flow channel mounting parts 2 in an array within the assembly cavity 11. Operators can easily and quickly remove the flow channel mounting parts 2 from the assembly cavity 11, thereby flexibly and quickly adjusting the position or number of flow channel mounting parts 2 with turbulence-disrupting structures 211 according to different test requirements. Flow channel mounting parts 2 with turbulence-disrupting structures 211 in different main channels can also be freely spliced ​​and assembled. This effectively improves the flexibility and convenience of using the fluid testing device, as well as the testing efficiency and test results of the fluid testing device.

[0051] In some embodiments, such as Figure 5 and Figure 6 As shown, a first mounting groove 221 is formed on the first sidewall 22 of the flow channel mounting component 2. The sealing assembly 3 includes a first sealing element 31. A first mounting part 311 is provided on both opposite sides of the first sealing element 31. The first mounting part 311 is respectively inserted into the first mounting groove 221 of the flow channel mounting component 2 adjacent along the first direction X. The first direction X is the width direction of the assembly cavity 11.

[0052] The aforementioned flow channel mounting component 2 may have two opposing first sidewalls 22, the surfaces of which may be recessed inward to form first mounting grooves 221. First mounting portions 311 may be provided on opposite sides of the first sealing member 31, such as... Figure 7 As shown, the sealing connection between the first mounting part 311 and the first mounting groove 221 can be achieved through the insertion and engagement of the first mounting part 311 and the flow channel mounting part 2. Figure 4 As shown, flow channel mounting parts 2 can be connected to both sides of the first sealing member 31 respectively. In this way, the flow channel mounting parts 2 adjacent to each other along the first direction X can be connected through the first sealing member 31, so that multiple flow channel mounting parts 2 can be arranged in a row.

[0053] The first sealing element 31 mentioned above can be made of rubber material. The first sealing element 31 made of rubber material can have good elasticity and sealing performance. Relying on the inherent properties of rubber material, flexible connection between adjacent flow channel mounting parts 2 in the first direction X can be achieved, thereby effectively improving the sealing performance between adjacent flow channel mounting parts 2.

[0054] The height of the first sealing element 31 can be higher than the height of the flow channel mounting element 2, so that the first sealing element 31 can abut against the top of the assembly cavity 11, thereby separating the main channels and effectively preventing the phenomenon of gas flow and cross-flow between the main channels.

[0055] In the above embodiments, the insertion and engagement between the first mounting groove 221 on the flow channel mounting component 2 and the first mounting portion 311 on the first sealing component 31 allows adjacent flow channel mounting components 2 along the first direction X to be tightly connected, thereby ensuring the stability of the assembly of multiple flow channel mounting components 2 along the first direction X. Furthermore, it also separates the main channels, effectively preventing gas from flowing between them and improving the accuracy of the test structure of the fluid testing device. Moreover, each flow channel mounting component 2 along the first direction X can be independently assembled using the first sealing component 31, greatly improving the convenience and flexibility of assembling and disassembling the flow channel mounting components 2, and fully meeting different testing needs.

[0056] In some embodiments, such as Figure 5 and Figure 8 As shown, the flow channel mounting component 2 has adjacent first sidewall 22 and second sidewall 23. A second mounting groove 231 is formed on the second sidewall 23. The sealing assembly 3 includes a second sealing element 32. The second sealing element 32 has a second mounting portion 321. The second mounting portion 321 is used to insert into the second mounting groove 231 of the flow channel mounting component 2 adjacent along the second direction Y. The second direction Y is the length direction of the assembly cavity 11.

[0057] The surface of the second sidewall 23 can be recessed inward to form a second mounting groove 231. Specifically, the second mounting groove 231 can be a through groove that extends along the second sidewall 23. Figure 5 A schematic diagram of the flow channel mounting components 2 located at both ends of the assembly cavity 11 along the second direction Y is shown, as follows. Figure 5 As shown, a second mounting groove 231 is formed on the second sidewall 23 facing the assembly cavity 11 of the flow channel mounting member 2. It can be understood that the second mounting groove 231 can also be formed on the sidewall opposite to the second sidewall 23 of the flow channel mounting member 2 located in the middle of the assembly cavity 11, so that the flow channel mounting members 2 adjacent to each other along the second direction Y can be tightly connected by the second seal 32.

[0058] The second seal 32 can be made of rubber material. The second seal 32 made of rubber material can have good elasticity and sealing performance, thereby effectively ensuring the sealing effect between adjacent flow channel mounting parts 2 along the second direction Y.

[0059] The second sealing member 32 can be elongated, and the second mounting part 321 can be disposed on opposite sides of the second sealing member 32 along the length direction of the second sealing member 32, so that two adjacent flow channel mounting parts 2 in the second direction Y can be respectively connected to opposite sides of the second sealing member 32.

[0060] The length of the second sealing element 32 corresponds to the width of the assembly cavity 11, thereby allowing each flow channel mounting component 2 along the first direction X to be connected to the second sealing element 32. On the one hand, this allows multiple flow channel mounting components 2 to be quickly assembled into the assembly cavity 11 along the first direction X, simplifying the assembly process, reducing assembly difficulty, and improving assembly efficiency. On the other hand, it also ensures the reliability of the connection between the flow channel mounting components 2 along the first direction X and the overall stability.

[0061] In the above embodiments, the insertion and engagement between the second mounting groove 231 on the flow channel mounting component 2 and the second mounting portion 321 on the second seal 32 allows adjacent flow channel mounting components 2 along the second direction Y to be tightly connected, thereby ensuring the stability of the assembly among multiple flow channel mounting components 2 along the second direction Y. Furthermore, each flow channel mounting component 2 along the second direction Y can be independently assembled using the second seal 32, greatly improving the convenience and flexibility of assembling and disassembling the flow channel mounting components 2, and fully meeting different testing needs.

[0062] In some embodiments, such as Figure 8 As shown, the second seal 32 also has a spacer 322 formed on the second mounting portion 321. The upper wall of the spacer 322 portion is recessed inward to form a groove 3221. The groove 3221 is used to connect the sub-channels 21 on adjacent flow channel mounting members 2 along the second direction Y.

[0063] The aforementioned spacer 322 can be located between adjacent flow channel mounting members 2 in the second direction Y. Since the spacer 322 can be made of rubber material, the flexible connection between adjacent flow channel mounting members 2 in the second direction Y can be achieved by relying on the inherent properties of the rubber material, thereby effectively improving the sealing of adjacent sub-channels 21 and thus improving the overall sealing of the main channel.

[0064] The upper wall surface of the portion corresponding to the flow channel mounting member 2 of the aforementioned partition 322 can be recessed inward to form a clearance space (i.e., groove 3221), thereby allowing the fluid entering the main channel to flow smoothly and avoiding fluid obstruction.

[0065] In the above embodiments, the groove 3221 formed on the spacer 322 can avoid interfering with and affecting the flow of fluid, effectively improving the rationality of the structural layout of the second seal 32 and ensuring the accuracy of the fluid testing device.

[0066] In some embodiments, such as Figure 6 As shown, a third mounting groove 312 is formed on the first sealing member 31 to be adapted to the second mounting part 321, and the second mounting part 321 is used to be inserted into the third mounting groove 312.

[0067] The adjacent wall surface of the first sealing member 31 and the side wall surface where the first mounting part 311 is located can be recessed inward to form a third mounting groove 312. Specifically, the third mounting groove 312 can be a through groove that runs through the wall surface. Figure 6 A schematic diagram is shown of the first seal 31 located at both ends of the assembly cavity 11 along the second direction Y. It can be understood that the first seal 31 located in the middle of the assembly cavity 11 may have a third mounting groove 312 disposed opposite to each other, so that the first seal 31 located in the middle of the assembly cavity 11 can be connected to two second seals 32 respectively.

[0068] In the actual assembly process, multiple flow channel mounting parts 2 and multiple first seals 31 can be assembled sequentially at intervals along the first direction X, and then the second seal 32 can be inserted into the above parts. This simplifies the assembly process and enables rapid assembly.

[0069] In the above embodiment, the connection between the first seal 31 and the second seal 32 can be achieved by inserting the second mounting part 321 into the third mounting groove 312. Since the first seal 31 can also be connected to the flow channel mounting part 2, and the flow channel mounting part 2 can also be connected to the second seal 32, a tight connection between the flow channel mounting part 2, the first seal 31 and the second seal 32 can be achieved, which significantly improves the overall structural strength and sealing performance.

[0070] In some embodiments, such as Figure 3 , Figure 4 and Figure 10 As shown, the housing assembly 1 includes a base plate 14, the upper surface of which is recessed inward to form an assembly cavity 11. The fluid inlet 12 includes a gas inlet 121, and the gas inlet 121 and the fluid outlet 13 are respectively formed on the side wall of the base plate 14. The gas inlet 121 is connected to the main channel through a first opening 111 located on the bottom of the assembly cavity 11, and the fluid outlet 13 is connected to the main channel through a second opening 112 located on the bottom of the assembly cavity 11.

[0071] The base plate 14 can be made of materials such as plastic or graphite, with graphite being the preferred material. Graphite has the characteristic of high processing accuracy, which helps to ensure the dimensional accuracy of the base plate 14.

[0072] The gas inlet 121 and fluid outlet 13 can be disposed on opposite sides of the base plate 14 along the second direction Y. The first port 111 and the second port 112 can be formed on the bottom of the assembly cavity 11 respectively. The first port 111 can be located at the end of the assembly cavity 11 near the gas inlet 121, and the second port 112 can be located at the end of the assembly cavity 11 near the fluid outlet 13.

[0073] like Figure 3and Figure 4 As shown, there can be multiple first ports 111 and multiple second ports 112. Specifically, the number of first ports 111 and multiple second ports 112 can correspond one-to-one with the number of main channels. Multiple first ports 111 can be connected to gas inlets 121, and multiple second ports 112 can be connected to fluid outlets 13. Gas flowing in through gas inlets 121 can flow into multiple first ports 111, and then into the corresponding main channels through multiple first ports 111. After flowing through the main channels, it can flow to the fluid outlets 13 through the corresponding second ports 112.

[0074] In the above embodiment, the gas inlet 121 can be used to deliver gas into the main channel, and the gas can enter the main channel through the first port 111 and be discharged from the fluid outlet 13 through the second port 112. This can achieve smooth gas flow, thereby enabling the testing and analysis of the gas performance of the turbulence structure 211 in the main channel, effectively ensuring the testing effect of the fluid testing device.

[0075] In some embodiments, such as Figure 11 As shown, the housing assembly 1 also includes a cover plate 15 that covers the base plate 14, and the fluid inlet 12 also includes a liquid inlet 122. The liquid inlet 122 is formed on the side wall of the cover plate 15 and is connected to the main channel through a third port 151 located on the cover plate 15.

[0076] The cover plate 15 can be made of materials such as quartz glass or plexiglass. The liquid inlet 122 can be provided on the cover plate 15 and located on the same side as the gas inlet 121.

[0077] like Figure 11 As shown, there can be multiple third ports 151. Specifically, the number of third ports 151 can correspond one-to-one with the number of main channels, and multiple third ports 151 can be connected to liquid inlets 122 respectively. Liquid flowing in through liquid inlets 122 can flow into the corresponding main channels through multiple third ports 151 respectively, and after flowing through the main channels, it can flow to the fluid outlet 13 through the corresponding second ports 112 respectively.

[0078] In the above embodiment, the liquid inlet 122 can be used to deliver liquid into the main channel, and the liquid can enter the main channel through the third port 151 and be discharged from the fluid outlet 13 through the second port 112. This can achieve smooth flow of liquid, thereby enabling the testing and analysis of the liquid performance of the turbulence structure 211 in the main channel, and further ensuring the testing effect of the fluid testing device.

[0079] In some embodiments, such as Figure 9As shown, the fluid testing device also includes a membrane electrode assembly 4, which is located between the base plate 14 and the cover plate 15. The membrane electrode assembly 4 is provided with a membrane electrode 41 corresponding to the main channel. The membrane electrode 41 is used to allow liquid from the liquid inlet 122 to permeate into the main channel.

[0080] The membrane electrode assembly 4 may have a membrane electrode 41. When the membrane electrode assembly 4 is placed between the base plate 14 and the cover plate 15, the membrane electrode 41 may be located below the third port 151. The liquid flowing from the liquid inlet 122 to the third port 151 may drip onto the membrane electrode 41 and then permeate through the membrane electrode 41 and enter the main channel under the drive of the gas.

[0081] The third port 151 mentioned above can have a small aperture, so that the liquid can slowly wet the membrane electrode 41 while reducing the impact on the membrane electrode 41, thereby avoiding damage to the membrane electrode 41.

[0082] In the above embodiments, liquid can permeate into the main channel through the membrane electrode 41, thereby simulating the process of liquid generation and entry into the main channel by the membrane electrode 41 under actual conditions. This makes the testing process closer to real-world usage scenarios and effectively improves the accuracy of the fluid testing device. Furthermore, by observing the process of liquid permeating from the membrane electrode 41 and then entering the main channel with the gas, the liquid properties of the turbulence structure 211 can be further tested and analyzed.

[0083] In some embodiments, such as Figure 2 and Figure 8 As shown, the housing assembly 1 includes a cover plate 15, and the upper wall of the spacer portion 322 protrudes outward to form a protrusion 3222, which is used to abut against the cover plate 15.

[0084] The upper wall surface of the portion corresponding to the first sealing member 31 of the aforementioned partition 322 can protrude outward to form a protrusion 3222. The height of the protrusion 3222 can be the same as the height of the first sealing member 31, so that the protrusion 3222 can abut against the cover plate 15, thereby separating each main channel and effectively preventing the phenomenon of gas flow channel cross-flow between each main channel.

[0085] In the above embodiment, the protrusions 3222 on the spacer 322 can separate the main channels from each other, effectively preventing gas from flowing between the main channels and further improving the accuracy of the test results of the fluid testing device.

[0086] In some embodiments, such as Figures 1 to 4 , Figure 10 and Figure 12As shown, at least one cavity sidewall of the assembly cavity 11 is configured as an open side 113, and the sealing assembly 3 includes a third seal 5 for sealing the open side 113.

[0087] The aforementioned flow channel mounting component 2, the first sealing component 31, and the second sealing component 32 can all be taken out and assembled from the open side 113 of the assembly cavity 11. After the assembly of the above components is completed, the open side 113 can be sealed by the third sealing component 5 to ensure the overall sealing of the fluid testing device.

[0088] The third sealing element 5 can be elongated. The elongated third sealing element 5 can be made of rubber material. The third sealing element 5 made of rubber material can have good elasticity and sealing performance, thereby effectively ensuring the sealing effect of the open side 113.

[0089] In the above embodiments, the flow channel mounting component 2, the first seal 31, and the second seal 32 can all be installed and removed from the open side 113 of the assembly cavity 11. When it is necessary to adjust the specific position of the flow channel mounting component 2 with the turbulence structure 211, the operator can directly make the adjustment through the open side 113 of the assembly cavity 11 without disassembling the entire housing assembly 1, which effectively simplifies the assembly process of the flow channel mounting component 2 and improves the assembly efficiency of the flow channel mounting component 2.

[0090] In some embodiments, the flow channel mounting 2 and / or cover plate 15 are made of transparent material.

[0091] In the above embodiments, the flow channel mounting component 2 and / or cover plate 15 made of transparent material can effectively eliminate the obstruction of the view by the flow channel mounting component 2 and / or cover plate 15, so that the flow of gas or liquid in the main channel can be observed intuitively, providing intuitive basis for subsequent analysis and judgment.

[0092] This application embodiment also provides a fluid testing system, including a clamping device 6 and a fluid testing device as described above. The clamping device 6 is used to apply forces to the housing assembly 1 and the sealing assembly 3 respectively, so that the housing assembly 1 and the sealing assembly 3 are sealed together.

[0093] like Figure 13As shown, the clamping device 6 may include a vertical clamping plate 61 and a horizontal clamping plate 62. The vertical clamping plate 61 can move towards and abut against the third seal 5, thereby applying a force to the third seal 5. By applying a force to the third seal 5, the third seal 5 can be driven to squeeze the flow channel mounting part 2, the first seal 31, and the second seal 32, so that the components are tightly fitted together, effectively ensuring the sealing and stability between the components. The horizontal clamping plate 62 can move towards and abut against the cover plate 15, thereby applying a force to the cover plate 15, so that the cover plate 15 can be tightly fastened to the base plate 14, thereby effectively improving the sealing performance of the housing assembly 1.

[0094] The fluid testing system of this application allows the clamping device 6 to apply force to the housing assembly 1 and the sealing assembly 3 respectively, thereby eliminating the gaps between the components through compression. This significantly improves the overall sealing performance of the fluid testing device, effectively preventing fluid leakage or cross-contamination during the testing process, and ensuring the accuracy and reliability of the test results.

[0095] In some embodiments, the fluid testing system further includes a controller and a flow control device. The flow control device includes a flow sensor and a flow control element that are electrically connected to the controller. The flow control element is disposed at the fluid inlet 12. The flow sensor is used to acquire flow information in the assembly cavity 11. The controller controls the opening and closing angle of the flow control element based on the flow information.

[0096] It should be noted that the controller can be built using electronic components such as timers, comparators, registers, and digital logic circuits, or implemented using processor chips such as microcontrollers, microprocessors, programmable logic controllers (PLCs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), and application-specific integrated circuits (ASICs) and their peripheral circuits.

[0097] The aforementioned flow detection device can acquire the gas flow rate or liquid flow rate within the assembly cavity 11 and generate corresponding flow information. Upon receiving this flow information, the controller can control the flow control device to perform opening and closing actions, or adjust its opening and closing angle, thereby achieving fluid flow regulation. Specifically, the aforementioned flow detection device may include a flow sensor, flow meter, etc., and the flow control device may include a flow control valve; this application does not specifically limit its application to these components.

[0098] In the above embodiments, by cooperating with the flow detection device and the flow control device, the flow rate of gas or liquid can be flexibly controlled according to the test requirements. This allows for the testing and analysis of the gas and liquid performance of the turbulence structure 211 under different operating conditions, effectively improving the test versatility and detection accuracy of the fluid testing system.

[0099] In some embodiments, such as Figure 13 As shown, the fluid testing system also includes an image acquisition device. A transparent observation area 63 is formed on the clamping device 6, and the image acquisition device is set corresponding to the transparent observation area 63.

[0100] The aforementioned transparent observation area 63 can be formed on the horizontal clamping plate 62. An image acquisition device can be set corresponding to the transparent observation area 63. The image acquisition device can capture images of the water distribution and droplet breakage near the turbulence structure 211 in the main channel, thereby analyzing the drainage performance of the turbulence structure 211. The image acquisition device may specifically include a camera, video camera, image sensor, etc. This application does not specifically limit it. Any device that can realize the image acquisition function is within the protection scope of this application.

[0101] In the above embodiments, the image acquisition device can be set corresponding to the transparent observation area 63. The image acquisition device can observe the drainage performance of the turbulence structure 211 in the main channel and the breakage of droplets through the transparent observation area 63, providing a reliable and objective basis for subsequent analysis.

[0102] In some embodiments, the fluid testing system further includes a smoke generator disposed at the fluid inlet 12.

[0103] The aforementioned smoke generator can produce smoke containing tracer particles. The smoke containing tracer particles can enter the main channel through the gas inlet 121 in the fluid inlet 12. With the help of a dual-pulse laser, the gas flow state in the main channel can be traced and detected, thereby analyzing and diagnosing the velocity distribution, vortex distribution, etc. near the turbulence structure 211.

[0104] In the above embodiments, the flow trajectory of gas in the main channel can be visually presented through the smoke generating device, clearly reflecting the flow state of the gas, which facilitates the accurate determination of the gas performance of the turbulence structure 211 and provides an intuitive and reliable test basis for the performance analysis of the turbulence structure 211.

[0105] The following describes the usage process of the fluid testing system: First, the base plate 14 and cover plate 15 can be placed inside the clamping device 6, and the membrane electrode assembly 4 can be placed between the base plate 14 and cover plate 15. At this time, neither the vertical clamping plate 61 nor the horizontal clamping plate 62 can apply force to the components inside the fluid testing device. After placing multiple flow channel mounting parts 2 and multiple first seals 31 sequentially along the first direction X through the open side 113 of the assembly cavity 11 into the assembly cavity 11, the multiple flow channel mounting parts 2 and multiple first seals 31 can be connected by the second seals 32, thereby completing the assembly of the flow channel mounting parts 2 in the same row. After the multiple rows of flow channel mounting parts 2 are assembled sequentially, the open side 113 of the assembly cavity 11 can be sealed by the third seals 5. Then, the vertical clamping plate 61 and the horizontal clamping plate 62 can apply force to the components inside the fluid testing device to ensure the overall sealing of the fluid testing device. Subsequently, gas can be supplied into the main channel through gas inlet 121, or liquid can be supplied into the main channel through liquid inlet 122. After testing the arrangement of the turbulence structure 211, the forces applied by the vertical clamping plate 61 and the horizontal clamping plate 62 can be removed, and the third seal 5 can be taken out. The position of the flow channel mounting component 2 with the turbulence structure 211 can then be adjusted through the open side 113 of the assembly cavity 11.

[0106] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0107] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0108] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fluid testing device for fuel cell plates, characterized in that, include: The housing assembly (1) has an assembly cavity (11) formed inside it, and a fluid inlet (12) and a fluid outlet (13) connected to the assembly cavity (11) are formed on the housing assembly (1). Multiple flow channel mounting components (2) are arranged in an array within the assembly cavity (11). Each flow channel mounting component (2) has a sub-channel (21) formed thereon. The multiple sub-channels (21) cooperate to form multiple parallel and independent main channels. The two ends of each main channel correspond to the fluid inlet (12) and the fluid outlet (13), respectively. At least one of the flow channel mounting components (2) has a turbulence structure (211) formed within its sub-channel (21). A sealing assembly (3) is used to detachably connect adjacent flow channel mounts (2).

2. The fluid testing device for fuel cell plates according to claim 1, characterized in that, A first mounting groove (221) is formed on the first sidewall (22) of the flow channel mounting component (2). The sealing assembly (3) includes a first sealing element (31). A first mounting portion (311) is provided on each of the opposite sides of the first sealing element (31). The first mounting portion (311) is inserted into the first mounting groove (221) of the flow channel mounting component (2) adjacent along the first direction (X). The first direction (X) is the width direction of the assembly cavity (11).

3. The fluid testing device for fuel cell plates according to claim 2, characterized in that, The flow channel mounting component (2) has adjacent first sidewalls (22) and second sidewalls (23), and a second mounting groove (231) is formed on the second sidewall (23). The sealing assembly (3) includes a second seal (32), which has a second mounting portion (321) for insertion into the second mounting groove (231) of the flow channel mounting component (2) adjacent along a second direction (Y), where the second direction (Y) is the length direction of the assembly cavity (11).

4. The fluid testing device for fuel cell plates according to claim 3, characterized in that, The second seal (32) also has a spacer (322) formed on the second mounting portion (321), the upper wall of the spacer (322) being recessed inward to form a groove (3221), the groove (3221) being used to connect the sub-channels (21) on adjacent flow channel mounting members (2) along the second direction (Y).

5. The fluid testing apparatus for fuel cell plates according to claim 4, characterized in that, The first seal (31) has a third mounting groove (312) adapted to the second mounting part (321), and the second mounting part (321) is used to be inserted into the third mounting groove (312).

6. The fluid testing apparatus for fuel cell plates according to claim 1, characterized in that, The housing assembly (1) includes a base plate (14), the upper surface of which is recessed to form the assembly cavity (11). The fluid inlet (12) includes a gas inlet (121). The gas inlet (121) and the fluid outlet (13) are respectively formed on the side wall of the base plate (14). The gas inlet (121) is connected to the main channel through a first opening (111) located on the bottom of the assembly cavity (11). The fluid outlet (13) is connected to the main channel through a second opening (112) located on the bottom of the assembly cavity (11).

7. The fluid testing apparatus for fuel cell plates according to claim 6, characterized in that, The housing assembly (1) further includes a cover plate (15) that covers the base plate (14), and the fluid inlet (12) further includes a liquid inlet (122) formed on the side wall of the cover plate (15). The liquid inlet (122) is connected to the main channel through a third port (151) located on the cover plate (15).

8. The fluid testing apparatus for fuel cell plates according to claim 7, characterized in that, The fluid testing device further includes a membrane electrode assembly (4), which is located between the base plate (14) and the cover plate (15). The membrane electrode assembly (4) is provided with a membrane electrode (41) corresponding to the main channel. The membrane electrode (41) is used to allow liquid from the liquid inlet (122) to permeate into the main channel.

9. The fluid testing apparatus for fuel cell plates according to claim 4, characterized in that, The housing assembly (1) includes a cover plate (15), and the upper wall of the spacer portion (322) protrudes outward to form a protrusion (3222) for abutting against the cover plate (15).

10. The fluid testing apparatus for fuel cell plates according to claim 1, characterized in that, At least one cavity sidewall of the assembly cavity (11) is configured as an open side (113), and the sealing assembly (3) includes a third seal (5) for sealing the open side (113).

11. The fluid testing apparatus for fuel cell plates according to claim 7, characterized in that, The flow channel mounting (2) and / or the cover plate (15) are made of transparent material.

12. A fluid testing system, characterized in that, Includes a clamping device (6) and a fluid testing apparatus as claimed in any one of claims 1 to 11, wherein the clamping device (6) is used to apply forces to the housing assembly (1) and the sealing assembly (3) respectively, so that the housing assembly (1) and the sealing assembly (3) are sealed together.

13. The fluid testing system according to claim 12, characterized in that, The fluid testing system also includes a controller and a flow control device. The flow control device includes a flow detector and a flow control element that are electrically connected to the controller. The flow control element is located at the fluid inlet (12). The flow detector is used to obtain flow information in the assembly cavity (11). The controller controls the opening and closing angle of the flow control element based on the flow information.

14. The fluid testing system according to claim 12, characterized in that, The fluid testing system also includes an image acquisition device. A transparent observation area (63) is formed on the clamping device (6), and the image acquisition device is set in relation to the transparent observation area (63).

15. The fluid testing system according to claim 12, characterized in that, The fluid testing system also includes a smoke generator, which is located at the fluid inlet (12).

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