Visual device for synchronously monitoring water thermal distribution of fuel cell
By designing a visualization device with a hollowed-out anode end plate and a transparent cover plate, combined with a thermal imager, the shortcomings of existing technologies in monitoring the internal temperature and water distribution of fuel cells have been solved. This enables precise measurement and data support, adapts to different testing needs, and improves the optimized design and operation management of fuel cells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Filing Date
- 2025-04-10
- Publication Date
- 2026-07-07
AI Technical Summary
Existing fuel cell visualization devices cannot fully reflect the complex operating environment inside the fuel cell stack, and cannot simultaneously and accurately monitor internal temperature and water distribution, especially water distribution on the anode side. Furthermore, existing methods suffer from insufficient measurement accuracy and poor real-time performance.
A visualization device for synchronously monitoring the water and heat distribution of a fuel cell was designed. It adopts a structure with a hollow anode end plate and a transparent cover plate, combined with a thermal imager, to achieve accurate measurement of the internal temperature and water distribution of the fuel cell. By simulating different gas entry and exit methods, the device monitors the changes in water and heat distribution under different conditions.
It enables precise measurement of internal temperature and water distribution in fuel cells, providing highly accurate data support to guide optimized design and operation management. It features a simple structure, convenient operation, low cost, and adaptability to various testing needs.
Smart Images
Figure CN224472463U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fuel cell technology, and in particular to a visualization device for synchronously monitoring the water and heat distribution of a fuel cell. Background Technology
[0002] As a highly efficient and clean energy conversion device, fuel cells have received considerable attention in the energy sector in recent years. They directly convert the chemical energy of fuel (such as hydrogen) and oxidant (such as oxygen) into electrical energy, offering significant advantages such as high energy conversion efficiency, zero pollution, and low noise. They are widely used in various fields including automotive power, distributed power generation, and portable power supplies. However, the performance and lifespan of fuel cells are affected by a variety of factors, among which internal temperature and water distribution are key factors.
[0003] During fuel cell operation, the uniformity of internal temperature is crucial to cell performance. Excessive temperature can lead to decreased catalyst activity, proton exchange membrane (PEM) performance degradation, and even thermal runaway; conversely, excessively low temperature can affect the reaction rate and reduce fuel cell output power. Furthermore, the water distribution inside the fuel cell is also extremely important. Appropriate water levels maintain the hydration of the PEM, ensuring efficient proton transport; however, excessive water can clog the gas channels within the membrane electrode assembly, affecting reactant gas transport and even causing flooding, resulting in a sharp decline in fuel cell performance. Therefore, real-time monitoring of the internal temperature and water distribution of the fuel cell is of great significance for optimizing fuel cell operating conditions, improving fuel cell performance, and extending its lifespan.
[0004] Currently, methods for measuring internal temperature and water distribution in fuel cells mainly rely on external sensors or indirect inference. For example, thermocouples are installed outside the fuel cell to measure its surface temperature, but this method cannot accurately reflect the true temperature distribution inside the fuel cell. For water distribution measurement, impedance spectroscopy analysis or model-based estimation are commonly used. While these methods provide some information, they suffer from limited measurement accuracy, insufficient real-time performance, or high requirements on fuel cell structure and operating conditions. Furthermore, existing visualization devices also have the following problems: 1) Most existing visualization devices only contain one fuel cell unit. This design cannot fully reflect the complex and coupled operating environment within the fuel cell stack. Therefore, in practical applications, the data provided by these visualization devices often has limitations and is difficult to accurately guide the optimized design and operation management of fuel cells; 2) Many current visualization devices only observe the water distribution on the cathode side, failing to observe the water distribution on the anode side. Fuel cell performance is affected not only by the water distribution on the cathode side but also by the water distribution on the anode side. For example, improper water management on the anode side may lead to membrane drying or poor gas-liquid two-phase flow, which in turn affects the performance of the fuel cell; 3) Existing visualization devices only observe the internal water distribution of the fuel cell, without combining the temperature distribution with the water distribution for comprehensive observation and analysis, and cannot fully assess the operating status of the fuel cell. Utility Model Content
[0005] To address the aforementioned problems in existing technologies, this invention proposes a visualization device for synchronously monitoring the water and heat distribution of fuel cells. This device enables precise measurement and intuitive display of the internal temperature and water distribution of fuel cells, and can test different gas inlet and outlet methods for the reaction gas, monitoring temperature and water distribution under different conditions. This provides strong support for the optimized design, operation monitoring, and fault diagnosis of fuel cells.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A visualization device for synchronously monitoring the hydrothermal distribution of a fuel cell includes an end plate, a transparent cover plate, an anode perforated plate, a bipolar plate, a cathode unipolar plate, a cathode copper current collector, a membrane electrode assembly, and fasteners. The end plate includes an anode end plate and a cathode end plate, with the anode end plate positioned on the outermost side of the anode. Its inner wall surfaceThe cathode end plate is tightly fitted to the transparent cover plate, and both are identical in shape and size at the fitting point. It is positioned on the outermost side of the cathode and tightly fitted to the cathode copper current collector. The anode perforated plate has a parallel anode flow channel, which is not connected to the external environment. The bipolar plate has a parallel cathode flow channel on both the anode and cathode sides. The cathode unipolar plate has a parallel cathode flow channel only on the anode side, which is exposed to the external environment. The membrane electrode assembly (MEA) is clamped between the anode perforated plate and the bipolar plate, between two bipolar plates, and between the bipolar plate and the cathode unipolar plate, respectively. The fasteners include nuts, screws, and washers. The screws pass through through holes in the anode end plate, the transparent cover plate, the anode perforated plate, and the cathode end plate. The nuts and washers secure all components together, forming a visualization device for synchronously monitoring the hydrothermal distribution of the fuel cell.
[0008] Furthermore, the anode end plate is made of hard metal, preferably aluminum alloy. This anode end plate possesses excellent mechanical properties, enabling it to withstand significant loads and external impacts, while simultaneously reducing the overall weight of the visualization device, making its application more convenient. The central area of the anode end plate is hollowed out, facilitating visual observation of the distribution and transport process of liquid water inside the fuel cell. The cathode end plate is made of insulating and chemically resistant material, preferably bakelite. Reinforcing ribs are machined on the outer surface of the cathode end plate, and their triangular gaps buffer mechanical loads, reducing deformation under pressure. Symmetrical through holes are provided on both sides of the anode and cathode end plates to allow screws to pass through for assembly.
[0009] Furthermore, the transparent cover is made of a high-strength, high-temperature resistant, non-conductive transparent material. Preferably, the transparent cover is made of polycarbonate. Symmetrical through holes are opened on both sides of the transparent cover, with the same size as those on the anode end plate. Grooves are opened on the upper and lower sides of its inner side, which are connected to the pneumatic connector interface on the outer side to facilitate the entry and exit of the reaction gas into the fuel cell stack.
[0010] Furthermore, the thickness of the bipolar plate is between 2-4 mm, and test grooves with a length of 5-10 mm, a width of 0.5-1.5 mm, and a depth of 1-2 mm are machined on both the upper and lower ends of the bipolar plate. Preferably, the dimensions of the test grooves are 10 × 0.5 × 2 mm. An external interface can be directly connected to the test grooves to monitor the operating status of individual cells in real time.
[0011] Furthermore, the size of the parallel cathode channel on the cathode monopole is the same as that on the bipole, but the inlet and outlet of the cathode side of the cathode monopole has a sealing ring to ensure the airtightness of the cathode side.
[0012] Furthermore, the thickness of the anode perforated plate is less than the thickness of the cathode monopolar plate, preferably ranging from 0.5 to 1.5 mm. The dimensions of the anode parallel flow channels on the anode perforated plate are the same as those on the bipolar plate, but the anode parallel flow channels on the anode perforated plate are fully perforated by machining.
[0013] Furthermore, both the cathode copper current collector and the anode perforated plate extend from the side of the fuel cell stack. The protruding area of the anode perforated plate is larger than that of the cathode copper current collector, and there are electrical connection ports at the corners of the protruding area of the anode perforated plate; heating can be achieved by attaching electric heating elements to the protruding area or by using... cool down The apparatus is cooled to simulate reactions under different temperature conditions.
[0014] Furthermore, sealing grooves are provided on both sides of the bipolar plate and the anode hollow plate, with the width of the sealing grooves ranging from 1 to 1.5 mm and the depth ranging from 0.2 to 0.4 mm.
[0015] Furthermore, a sealing groove is formed on the anode side surface of the cathode monopole plate, and a groove for placing a sealing ring is formed at the gas inlet and outlet of the cathode side surface to ensure the airtightness of the device and prevent leakage of reaction gas.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] This invention provides a visualization device for synchronously monitoring the water and heat distribution of a fuel cell. It achieves the observation of the water distribution on the anode side of the fuel cell through structures such as a hollow anode end plate, a transparent cover plate, and a hollow anode plate. In addition, a thermal imager can be used to monitor the internal temperature distribution of the fuel cell.
[0018] This invention provides a visualization device for synchronously monitoring the water and heat distribution of fuel cells. By combining multiple fuel cell units into a fuel cell stack, it highly simulates the reaction of fuel cells in actual applications, thereby ensuring that the observed data has high authenticity.
[0019] This invention provides a visualization device for synchronously monitoring the water and heat distribution of a fuel cell. By heating or cooling the protruding area of the anode perforated plate, it enables monitoring of the anode-side water distribution during the fuel cell reaction under different ambient temperature conditions. Furthermore, this device... The modular design allows for detachable connections between components, such as... By adjusting the number and arrangement of the anode perforated plates, bipolar plates, and cathode monopolar plates, the size and structure of the fuel cell stack can be easily changed to adapt to different testing needs and research objectives.
[0020] This invention provides a visualization device for synchronously monitoring the water and heat distribution of a fuel cell. By opening and closing pneumatic joints at four different locations, the device can explore the changes in the water distribution and temperature characteristics inside the fuel cell when the reactant gas adopts different inlet and outlet methods, thereby providing a scientific basis for optimizing fuel cell performance.
[0021] Compared with existing visualization devices, this invention has the advantages of simple structure, convenient application, accurate measurement data, low cost, and rich operation items, and can provide a scientific and practical method for studying the internal water distribution and temperature distribution of fuel cells. Attached Figure Description
[0022] Figure 1 is a schematic diagram of the overall appearance of a visualization device for synchronously monitoring the water and heat distribution of a fuel cell in an embodiment.
[0023] Figure 2 is an exploded view of the components of a visualization device for synchronously monitoring the water and heat distribution of a fuel cell in an embodiment.
[0024] Figure 3 is a schematic diagram of the anode end plate in the embodiment.
[0025] Figure 4 is a schematic diagram of the inner side of the transparent cover in the embodiment.
[0026] Figure 5 is a schematic diagram of the outside of the transparent cover in the embodiment.
[0027] Figure 6 is a schematic diagram of the anode perforated plate in the embodiment.
[0028] Figure 7 is a schematic diagram of attaching an electric heating element to the anode perforated plate in the embodiment.
[0029] Figure 8 is a schematic diagram of the front of the bipolar plate in the embodiment.
[0030] Figure 9 is a schematic diagram of the back of the bipolar plate in the embodiment.
[0031] Figure 10 is a schematic diagram of the front of the cathode monopole in the embodiment.
[0032] Figure 11 is a schematic diagram of the back side of the cathode monopole in the embodiment.
[0033] Figure 12 is a schematic diagram of the cathode copper current collector in the embodiment.
[0034] Figure 13 is a schematic diagram of the front of the cathode end plate in the embodiment.
[0035] Figure 14 is a schematic diagram of the back side of the cathode end plate in the embodiment.
[0036] Figure 15 is a schematic diagram of the visualization device testing system in the embodiment.
[0037] Figure 16 is a schematic diagram of the four air intake and exhaust methods in the embodiment.
[0038] The diagram shows: Anode end plate 1, end plate through hole 1-1, end plate hollow area 1-2, transparent cover plate 2, transparent cover plate through hole 2-1, transparent cover plate groove 2-2, transparent cover plate pneumatic connector interface 2-3, anode hollow plate 3, anode hollow plate hollow area 3-1, anode hollow plate extension area 3-2, anode hollow plate wiring port 3-3, anode hollow plate through hole 3-4, anode hollow plate sealing groove 3-5, membrane electrode 4, bipolar plate 5, bipolar plate sealing groove 5-1, bipolar plate anode parallel flow channel 5-2, bipolar plate cathode parallel flow channel 5-3, test tank 5-4, bipolar plate gas channel 5-5, cathode monopolar plate 6, cathode monopolar plate cathode parallel flow channel 6-1, cathode monopolar plate gas channel 6-2, cathode monopolar plate sealing groove 6-3, cathode copper current collector 7. 7-1. Cathode copper current collector extension area; 7-2. Cathode copper current collector wiring port; 7-3. Cathode copper current collector pneumatic connector interface; 8. Cathode end plate; 8-1. Cathode end plate pneumatic connector interface; 8-2. Cathode end plate through hole; 8-3. Cathode end plate reinforcing rib; 9-1. Pneumatic connector; 9-2. Pneumatic connector; 9-3. Pneumatic connector; 9-4. Screw; 10. Nut; 11. Gasket; 12. Sealing ring; 13. High-pressure hydrogen storage cylinder; 14. Pressure reducing valve; 15. Rotor flow meter; 16. Fuel cell; 17. Fan; 18. Thermal imager; 19. Purge valve; 20. Camera; 21. Electronic load; 22. Computer; 23. Data acquisition instrument; 24. Electric heating element; 25. Detailed Implementation
[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0040] As shown in Figures 1 and 2, a visualization device for synchronously monitoring the water and heat distribution of a fuel cell is composed of an anode end plate 1, a transparent cover plate 2, an anode perforated plate 3, a membrane electrode 4, a bipolar plate 5, a cathode unipolar plate 6, a cathode copper current collector 7, a cathode end plate 8, a pneumatic connector, a sealing ring 13, and fasteners. The anode end plate 1 and the cathode end plate 8 are located on the outermost side. The inner side of the anode end plate 1 is tightly fitted with the transparent cover plate 2, and the inner side of the cathode end plate 8 is fitted with the outer side of the cathode copper current collector 7. The connection between the two is sealed by a sealing ring 13 to ensure airtightness. Multiple membrane electrode 4 and bipolar plate 5 are stacked to form a fuel cell stack. The outermost part consists of cathode monopolar plate 6 and anode perforated plate 3. Cathode monopolar plate 6 is attached to the inner side of cathode copper current collector 7. The connection between the two is sealed by sealing ring 13 to ensure airtightness. Anode perforated plate 3 is tightly attached to the inner side of transparent cover plate 2. All components are fastened by screws 10, nuts 11 and gaskets 12.
[0041] As shown in Figure 3, the anode end plate 1 is made of aluminum alloy. Its length and width are slightly larger than those of the bipolar plate, and it has good mechanical properties, which can better protect the fuel cell stack. The anode end plate has a hollow center, and the hollow area 1-2 is slightly larger than the flow channel area of the anode hollow plate 3, which facilitates comprehensive observation of the anode side water distribution. Three through holes 1-1 are symmetrically machined on both sides of the hollow area 1-2 so that the screw can pass through for assembly.
[0042] As shown in Figures 2, 4, 5, and 8, the transparent cover plate 2 has the same external dimensions as the anode end plate 1. Six through holes 2-1 are machined at the same locations. Because the strength of the transparent cover plate 2 is lower than that of the anode end plate 1, its thickness is greater. In this embodiment, the thickness of the anode end plate 1 is 5mm, and the thickness of the transparent cover plate 2 is 10mm. Grooves 2-2 are machined on both the upper and lower inner sides of the transparent cover plate 2. The shape of the grooves 2-2 is consistent with the bipolar plate gas channel 5-5, and the depth of the grooves 2-2 is 5mm. Pneumatic connector interfaces 2-3 are machined on both the upper and lower outer sides of the transparent cover plate 2. The pneumatic connector interfaces 2-3 are connected to the grooves 2-2. By connecting the pneumatic connectors 9-1 and 9-2 to the pneumatic connector interfaces 2-3, the reaction gas can be introduced into the fuel cell stack device.
[0043] As shown in Figures 6 and 7, the width of the perforated area 3-1 of the anode perforated plate is 1.5 mm, and the interval between adjacent areas is 2 mm. The perforated design of the flow channel serves two purposes: first, it allows light to pass through, facilitating the observation of water distribution on the anode side; second, it allows the reaction gas introduced through the groove 2-2 of the transparent cover plate to pass through. A sealing groove 3-5 is formed on the anode perforated plate 3, with a width of 1 mm and a depth of 0.2 mm. Adhesive (such as silicone rubber, synthetic rubber, etc.) is injected into the groove using a glue injection machine to achieve sealing. Heating is achieved by attaching an electric heating element 25 to the extended area 3-2 of the anode perforated plate, or by using... cool down The device is cooled to monitor the water distribution on the anode side during the fuel cell reaction under different ambient temperatures. External devices can be connected to collect current through the anode perforated plate connector 3-3, replacing the function of a current collector. Three through holes are provided on one side of the extended area of the anode perforated plate for easy fixation.
[0044] As shown in Figures 8 and 9, the bipolar plate 5 has an anode parallel flow channel 5-2 on the cathode side and a cathode parallel flow channel 5-3 on the anode side. The anode parallel flow channel 5-2 is vertical, with a width of 1.5 mm and a depth of 1 mm, and the protrusion between adjacent channels is 2 mm wide. The cathode parallel flow channel 5-3 is horizontal, with a width of 1.3 mm and a depth of 2 mm, and the protrusion between adjacent channels is 1 mm wide. Bipolar plate gas channels 5-5 with a cross-sectional area of 14 × 3 mm² are machined on both the top and bottom sides of the bipolar plate 5 to allow the reaction gas to enter through the anode perforated plate 3. To ensure airtightness, sealing grooves 5-1 are formed on both sides of the bipolar plate 5, with a width of 1 mm and a depth of 0.4 mm, and adhesive is injected to achieve a sealing effect. Test slots 5-4 are machined on the four corners of the side of the bipolar plate 5, and external equipment can be embedded in them to monitor the operating status of individual cells.
[0045] As shown in Figures 9, 10, and 11, the cathode monopolar plate 6 has the same dimensions as the bipolar plate 5, but it only has a cathode parallel flow channel 6-1 machined on the anode side. The dimensions of the cathode parallel flow channel 6-1 are consistent with those on the bipolar plate 5. A test groove 5-4 is provided on one side of the cathode monopolar plate, and its dimensions and function are consistent with those of the bipolar plate test groove 5-4. In order to prevent the leakage of reaction gas, a sealing groove 6-4 is provided on this side. The dimensions of the sealing groove 6-4 are consistent with those of the bipolar plate sealing groove 5-1. A cathode monopolar plate gas channel 6-2 is provided on the back of the cathode monopolar plate. A groove for placing a sealing ring 13 is provided outside the channel so that the reaction gas can be input through the pneumatic connectors 9-3 and 9-4 while ensuring airtightness.
[0046] As shown in Figure 12, the overall structural dimensions of the cathode copper current collector 7 are similar to those of the cathode monopolar plate. The extension region 7-1 of the cathode copper current collector functions the same as the extension region 3-2 of the anode perforated plate. The cathode copper current collector 7 is equipped with two pneumatic connector interfaces 7-3, the size of which is consistent with the gas channel 6-2 of the cathode monopolar plate, facilitating the introduction of reaction gases. The cathode copper current collector 7 is also equipped with a cathode copper current collector wiring port 7-2 for collecting current.
[0047] As shown in Figures 13 and 14, the cathode end plate 8 is made of bakelite, which has good corrosion resistance. Its thickness is 9mm. The cathode end plate 8 has two pneumatic connector interfaces 8-1, which are M5 screw holes. A groove, the same size as that on the cathode monopole plate 6, is provided on the inner side of the cathode end plate 8 at the pneumatic connector interface 8-1, to accommodate the sealing ring 13 and prevent gas leakage. Reinforcing ribs 8-3 are machined on the outer surface of the cathode end plate 8 to enhance its mechanical properties and reduce stress deformation. Three through holes are symmetrically provided on each side of the cathode end plate for the screw to pass through and be fixed.
[0048] Figure 15 shows a schematic diagram of a visualization device test system for measuring the internal temperature and water distribution of a fuel cell. Its workflow is as follows:
[0049] First, the hydrogen in the high-pressure hydrogen storage cylinder 14 undergoes pressure and flow regulation via a pressure reducing valve 15 and a rotor flow meter 16. The regulated hydrogen then enters the anode side of the fuel cell 17 through a pneumatic connector 9-1. A fan 18 is placed on the side of the device. When the fan 18 is turned on, air is blown into the cathode parallel flow channel 5-3 for reaction. The fan 18's cooling function maintains a suitable operating temperature. A purge valve 20 is connected to the pneumatic connector 9-3 on the cathode side to discharge the water produced in the reaction. To record the reaction process, a camera 21 is placed on the anode side to record images of the water distribution on the anode side during the reaction. A thermal imager 19 on the anode side monitors temperature changes during the reaction and transmits the data to a computer 23. The electronic load 22 is connected to the cathode and anode sides of the fuel cell stack via the wiring ports 3-3 on the cathode copper current collector 7 and the anode perforated plate 3. Changing the load size alters the operating status of the fuel cell stack. Furthermore, an electric heating element 25 can be attached to the extension area 3-2 of the anode perforated plate for heating, enabling monitoring of water distribution on the anode side during the fuel cell reaction under different ambient temperature conditions. The test slot 5-4 on the bipolar plate 5 is connected to the data acquisition instrument 24 to monitor the operating status of individual cells in real time, collect current and voltage parameters during the reaction process, and transmit the data to the computer 23 to provide data support for further optimization of fuel cell performance. Additionally, as... Figure 16 As shown, this utility model lists four different ways of introducing and releasing reactant gases, and these methods can be varied as needed to explore the internal temperature and water distribution of fuel cells under various operating conditions.
[0050] The above embodiments are merely examples to illustrate the present invention and are not intended to limit the embodiments of the present invention. Those skilled in the art can make various modifications or adjustments based on the foregoing description. It is neither necessary nor possible to list all embodiments here. Any modifications, equivalent substitutions, and improvements made within the core concept and principles of the present invention are included within the protection scope of the claims of the present invention.
Claims
1. A visualization device for synchronously monitoring the hydrothermal distribution of a fuel cell, characterized in that, The following components are included: end plates, including anode end plate (1) and cathode end plate (8), the anode end plate has a hollow center, its inner wall is tightly fitted with transparent cover plate (2), the outer surface of the cathode end plate is processed with reinforcing ribs, and its inner side is tightly fitted with cathode copper current collector plate (7); transparent cover plate, its outer shape is consistent with the shape of anode end plate, and its inner side is machined with grooves; anode hollow plate (3), with anode parallel flow channels and hollow treatment; bipolar plate (5), with cathode parallel flow channels on the anode side and anode parallel flow channels on the cathode side; cathode monopolar plate (6), with cathode parallel flow channels only on the anode side; membrane electrode (4), respectively sandwiched between anode hollow plate and bipolar plate, between bipolar plate and bipolar plate, and between bipolar plate and cathode monopolar plate; fasteners, including nuts (11), screws (10) and washers (12), the screws pass through the through holes in the end plate, transparent cover plate and anode hollow plate, and all components are connected together by nuts and washers.
2. The visualization device for synchronously monitoring the water and heat distribution of a fuel cell according to claim 1, characterized in that: The parallel flow channel of the anode perforated plate is fully perforated, and the middle of the anode end plate is perforated, so that a thermal imager can be placed on the anode side.
3. The visualization device for synchronously monitoring the water and heat distribution of a fuel cell according to claim 1, characterized in that: Test grooves are machined at the top and bottom ends of both sides of the bipolar plate. The dimensions of the test grooves are 5-10mm in length, 0.5-1.5mm in width, and 1-2mm in depth.
4. The visualization device for synchronously monitoring the water and heat distribution of a fuel cell according to claim 1, characterized in that: The anode plate is made of aluminum alloy.
5. The visualization device for synchronously monitoring the water and heat distribution of a fuel cell according to claim 1, characterized in that: The transparent cover is made of high-strength, high-temperature resistant, non-conductive, and transparent polycarbonate.
6. The visualization device for synchronously monitoring the water and heat distribution of a fuel cell according to claim 1, characterized in that: The cathode end plate is made of insulating and chemical-resistant bakelite material.
7. The visualization device for synchronously monitoring the water and heat distribution of a fuel cell according to claim 1, characterized in that: Both the cathode copper current collector and the anode hollow plate extend from the side of the fuel cell stack. The extended area of the anode hollow plate is larger than that of the cathode copper current collector, and there are electrical wiring ports at the corners of the extended area of the anode hollow plate. The extended area can be heated by attaching electric heating pads or cooled by a cooling device to simulate the reaction under different temperature conditions.
8. The visualization device for synchronously monitoring the water and heat distribution of a fuel cell according to claim 1, characterized in that: This visualization device adopts a modular design, and the components can be detached and connected.