A multi-chamber parallel testing electrolytic cell material testing device

Abstract

The utility model discloses a kind of multi-chamber parallel test's electrolytic cell material testing device, include electrolytic cell main body, support structure component, thermal buffer component and temperature monitoring module.Electrolytic cell main body inside is equipped with test chamber, for accommodating electrode sample, provide the closed environment required for electrode reaction;Support structure adopts flat plate, corrugated net or papillary plate and other key materials, adapt to various electrode samples;Thermal buffer component includes thermal buffer chamber, utilizes equivalent heat exchange to balance electrolytic cell two ends heat dissipation, guarantee electrode sample temperature uniformity;Temperature monitoring module is used for real-time data acquisition.When testing, first select adaptive support structure fixed sample, deploy thermal buffer chamber, then start test and monitor temperature, synchronously collect performance and temperature data.The system solves the problem of uneven temperature, poor adaptability and other problems in traditional test, improves temperature uniformity and test efficiency, accelerates electrolytic cell key material research and development, and is suitable for water electrolysis, fuel cell and other scene material evaluation.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic cell testing technology, specifically to an electrolytic cell material testing device for multi-chamber parallel testing. Background Technology

[0002] In the research and development of water-to-hydrogen electrolyzers, the performance testing of electrode materials is a core step, and the efficiency and accuracy of the testing system directly affect the progress of material development. In existing electrolyzer testing systems, to ensure testing capacity, the two ends of the electrolyzer are often designed with large-area structures. However, large areas can easily lead to excessively fast heat dissipation rates and uneven heat dissipation at both ends. This results in uneven heat exchange in different areas of the electrode sample under test, with large temperature differences, showing a trend of "high in the middle and low on both sides." Consequently, this affects the authenticity of the test data, fails to accurately reflect the material performance, and interferes with research and development judgments.

[0003] Meanwhile, existing systems often employ a single type of support structure, making it difficult to adapt to electrode samples with different structures. This limits the testing compatibility with diverse materials and reduces R&D efficiency. Furthermore, the lack of targeted thermal management and flexible adaptation design results in long test preparation times (such as sample replacement and temperature equilibration), and data accuracy is greatly affected by temperature fluctuations. These shortcomings lead to poor versatility, low testing efficiency, and an inability to meet the demands of high-efficiency R&D. Traditional test fixtures struggle to effectively seal and reliably clamp these non-flat materials, and cannot address the issue of temperature uniformity during testing. Therefore, developing a high-efficiency testing system that can adapt to various novel structural materials and provide a stable and uniform testing environment is an urgent need.

[0004] For the reasons mentioned above, it is necessary to propose a multi-chamber parallel testing device for electrolytic cell materials to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve the problems of uneven electrode sample temperature, poor versatility of support structure, and insufficient testing efficiency in existing electrolytic cell testing systems. It provides a rapid, novel, and efficient testing system and method for key materials in electrolytic cells by balancing the temperature through a thermal buffer chamber and adapting to various samples through a multi-form support structure.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: An electrolytic cell material testing device for multi-chamber parallel testing includes: The main body of the electrolytic cell has multiple test chambers inside to hold electrode samples and electrolyte; several small chamber mounting slots are symmetrically opened on the side walls at both ends for arranging heat buffer chambers. The support structure assembly is detachably installed in the test chamber to support and fix the electrode sample; The thermal buffer assembly includes multiple thermal buffer chambers, which are sealed and installed in the chamber mounting slot. The thermal buffer chambers are equipped with the same support structure components and sealing gaskets as the test chamber. The thermal buffer assembly balances the heat dissipation at both ends of the electrolytic cell through equivalent heat exchange, so that the temperature of the electrode sample area is uniform. The temperature detection module includes temperature sensors located inside the test chamber and the thermal buffer chamber, which collect temperature data in real time and provide feedback to regulate the test environment.

[0007] Furthermore, the main body of the electrolytic cell includes multiple stacked chamber plates. The side of each chamber plate has a concave cavity. The concave cavities of two adjacent chamber plates fit together to form a sealed test chamber. The edges of the two fitted concave cavities hold the diaphragm sample to be tested, and the diaphragm divides the test chamber into an anode side and a cathode side. The electrode sample to be tested is placed in the anode side and the cathode side, respectively.

[0008] Furthermore, the outermost chamber plate has a chamber mounting groove on its outer side for installing heat buffer chambers.

[0009] Furthermore, the heat buffer chamber is equipped with the same electrode membrane material as the main test area of ​​the electrolytic cell, so that the energy consumption of the heat buffer chamber is consistent with that of the test area, avoiding extra energy consumption from interfering with the test results.

[0010] Furthermore, the structure of the support structure component includes a flat plate, a corrugated mesh, and a protruding plate; in the support structure component, the thickness of the flat plate is 1-3mm, the thickness of the corrugated mesh is 0.5-2mm, and the thickness of the protruding plate is 1-4mm, and each surface is provided with electrolyte flow holes.

[0011] Furthermore, the number of heat buffer chambers is 4-6, and they are evenly distributed along the edges of both ends of the electrolytic cell body.

[0012] Furthermore, the main body of the electrolytic cell also includes a frame body, with slide rails symmetrically arranged on the front and rear sides of the frame body. The chamber plates are provided with sliding parts on both sides that are slidably connected to the slide rails. When changing electrode samples, the test chamber can be opened by moving between any two chamber plates through the slide rails.

[0013] Furthermore, the frame body includes a fixed end plate, an end pressure plate, and a pressing drive unit. The two fixed end plates are fixedly connected by a slide rail. An end pressure plate is provided on the inner side of the fixed end plate. A pressing drive unit is provided on the fixed end plate. The free end of the pressing drive unit is connected to the end pressure plate. The pressing drive unit applies pressure to the end pressure plate, so that the sealing point at the joint of the multiple stacked chamber plates forms a seal.

[0014] Furthermore, the frame includes end plates and tension bolts, and multiple test chambers are provided between the two end plates; multiple L-shaped holes are provided around the chamber plate, one end of the L-shaped hole forms an opening at the edge of the end plate, and the tension bolts enter the L-shaped hole through the opening to pull the two end plates closer and fix the test chamber between them.

[0015] A rapid, novel, and efficient testing method for key materials in electrolytic cells, comprising the following steps: a) Based on the electrode sample structure, select the corresponding support structure (flat plate, corrugated mesh, convex plate), fix the sample and then put it into the test chamber; b) Install heat buffer chambers at both ends of the electrolytic cell, ensuring that the chambers are sealed and that the diaphragm materials are the same and compatible; c) Inject electrolyte, start the test program, use the temperature monitoring module to monitor the temperature change of the heat buffer chamber, generate heat exchange, and make the electrode sample temperature uniform; d) Collect electrolysis performance parameters and temperature data, and analyze material properties.

[0016] The advantages and beneficial effects of this utility model are as follows: First, precise temperature control: The thermal buffer chamber utilizes an equivalent diaphragm material and heat exchange design to balance heat dissipation at both ends of the electrolytic cell, improve the temperature uniformity of the electrode sample, and avoid the interference of temperature differences on test data (such as current density and voltage stability), so that the test data more accurately reflects the material performance.

[0017] Second, high compatibility and adaptability: The detachable support structure enables rapid switching between different electrode samples without replacing the entire electrolytic cell. The multi-form support structure (flat plate, corrugated mesh, and laminated plate) covers the structural requirements of different electrode samples, shortens the sample replacement and installation time, and adapts to diverse R&D scenarios.

[0018] Third, improved testing efficiency: The pre-configured thermal buffer chamber and quick-adaptive support structure shorten the test preparation cycle; the temperature self-balancing mechanism reduces debugging time, realizing an efficient "test as soon as sample is loaded" process and accelerating the R&D process of key materials for electrolytic cells.

[0019] Fourth, high efficiency is guaranteed: the heat buffer component does not require additional temperature control equipment. Temperature balance is achieved through material matching, which simplifies the testing process and shortens the time of a single test. Attached Figure Description

[0020] Figure 1 This is an isometric view of an electrolytic cell material testing device for multi-chamber parallel testing according to this utility model; Figure 2 This is an exploded view of the material testing system of this utility model; Figure 3 This is a longitudinal cross-sectional schematic diagram of the material testing system of this utility model; Figure 4 This is a schematic diagram of the test chamber and the thermal buffer chamber in this utility model; Figure 5 This is a schematic diagram of the main structure of the electrolytic cell in this utility model; Figure 6 This is a utility model Figure 5 Exploded view; In the diagram: 1. Electrolytic cell body; 2. Electrode sample; 3. Test chamber; 4. Chamber mounting slot; 5. Thermal buffer chamber; 6. Support structure assembly; 7. Diaphragm material; 8. Chamber plate; 9. Concave cavity; 10. Anode side; 11. Cathode side; 13. Corrugated mesh; 14. Frame body; 15. Slide rail; 16. Guide rod; 17. Sliding part; 18. Fixed end plate; 19. End pressure plate; 20. Pressing drive part; 21. Tensioning bolt; 22. L-shaped hole; 23. Opening; 24. Sealing gasket; 25. Temperature sensor; 26. Intermediate plate; 27. End plate; 28. U-shaped ear plate. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to examples. These examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0022] An electrolytic cell material testing device for multi-chamber parallel testing includes: The electrolytic cell body 1 contains multiple test chambers 3 for accommodating electrode samples 2 and electrolyte. Symmetrically arranged on its two end sidewalls are several small chamber mounting slots 4 for arranging heat buffer chambers 5. During testing, the electrode samples 2 can include relevant samples used in the research and testing of electrodes, diaphragms, electrode plate structures, or other key materials. The samples to be tested are processed to a size suitable for the electrolytic cell and can then be used interchangeably for sample testing. The electrolytic cell body 1 provides the electrolytic reaction environment. The multiple test chambers 3 inside the electrolytic cell body 1 are used for simultaneously testing multiple electrode samples 2.

[0023] Furthermore, the electrolytic cell body 1 includes multiple stacked chamber plates 8, and the electrolytic cell body 1 has multiple test chambers 3 inside for simultaneously detecting multiple electrode samples 2. The chamber plates 8 have concave cavities 9 on their sides. The concave cavities 9 of two adjacent chamber plates 8 are fitted together to form a sealed test chamber 3. The edges of the two fitted concave cavities 9 hold the diaphragm sample to be tested, and the diaphragm divides the test chamber 3 into an anode side 10 and a cathode side 11. The electrode samples 2 to be tested are respectively placed in the anode side 10 and the cathode side 11.

[0024] Test chamber 3 can accommodate a wide range of sample types, including key electrolytic cell materials such as electrodes, diaphragms, and plate structures. The sample to be tested only needs to be machined to a specification compatible with the chamber (e.g., matching the dimensions of the recessed cavity 9 and the thickness of the chamber spacing) for direct replacement and installation, without needing to replace the entire electrolytic cell body 1. This design is based on the principle of "standardized interface," reducing the complexity of sample replacement by unifying chamber specifications and adapting to diverse R&D needs. Specifically, such as Figure 2 , 4 As shown, the chamber plate 8 includes a middle plate 26, an end plate 27, and an end pressure plate 19. The middle plate 26, end plate 27, and end pressure plate 19 have the same outer peripheral shape, allowing them to be stacked to form a test chamber 3. Multiple L-shaped holes 22 can be provided around its perimeter, with corresponding positions. After stacking, tension bolts 21 can be inserted through the side openings 23 of the L-shaped holes 22, facilitating quick installation of the detachable tension bolts and preventing positional shifts between the chamber plates 8. Figure 4 As shown, the intermediate plate 26 has a structure with recessed cavities 9 on both sides, so when multiple chamber plates 8 are stacked, test chambers 3 can be formed on both sides respectively, such as... Figure 3 The structure shown; the interior of the concave cavity 9 forms a space for mounting electrodes and supporting structural components 6. When the four edges of the concave cavity 9 interlock, they can be used to clamp and fix the diaphragm material 7. It can be understood that sealing gaskets 24 are provided at the contact points between the edges of the diaphragm material 7 and the periphery of the concave cavity 9, so that the test chamber 3 can be sealed when interlocked. Furthermore, as... Figure 4 As shown, one side of the end plate 27 is provided with a concave cavity 9, and the other side is used to provide a small chamber mounting groove 4. During assembly, the end pressure plate 19 is attached to the outer side of the end plate 27.

[0025] The outermost chamber plate 8 has a chamber mounting groove 4 on its outer side for installing the heat buffer chamber 5.

[0026] The main body 1 of the electrolytic cell also includes a frame 14. Specifically, as one embodiment of the frame 14, such as... Figure 5 , 6As shown, the frame 14 in this embodiment only includes end pressure plates 19 and tension bolts 21. Multiple test chambers 3 are set between the two end pressure plates 19. Specifically, multiple intermediate plates 26 and end plates 27 are set between the two end pressure plates 19. Multiple L-shaped holes 22 with corresponding positions are provided around the end pressure plates 19, intermediate plates 26 and end plates 27. One end of the L-shaped hole 22 forms an opening 23 at the edge of the end pressure plate 19. The tension bolts 21 enter the L-shaped hole 22 through the opening 23 to pull the two end pressure plates 19 closer and fix the test chamber 3 between them. In use, it is only necessary to stack the multiple test chambers 3 and install the internal components, then set the end pressure plates 19 at both ends, and then use the tension bolts 21 to put into the L-shaped hole 22 and tighten them. In this embodiment, U-shaped ear plates 28 can be set differently.

[0027] Furthermore, as another embodiment of the frame body 14, slide rails 15 are symmetrically arranged on the front and rear sides of the frame body 14. The frame body 14 includes fixed end plates 18, end pressure plates 19, and pressing drive parts 20. The two fixed end plates 18 are fixedly connected by slide rails 15. Figure 1-3 As shown, two fixed end plates 18 are arranged opposite each other. Two parallel guide rods 16, serving as slide rails 15, are provided on the front and rear sides of each fixed end plate 18. In actual use, the chamber plates 8 can slide and adjust their position on the guide rods 16, and can be easily removed for addition or removal. Specifically, an end pressure plate 19 is provided inside the fixed end plate 18, and a pressing drive part 20 is provided on the fixed end plate 18. The free end of the pressing drive part 20 is connected to the end pressure plate 19, and the pressing drive part 20 applies pressure to the end pressure plate 19, forming a seal at the joint of the multiple stacked chamber plates 8. Figure 3 As shown, the clamping drive unit 20 in this embodiment uses a hydraulic cylinder, but it can also use a manual structure that combines a pneumatic cylinder, a lead screw, and a handwheel. Figure 3 Hydraulic cylinders are provided on both sides of the chamber plate 8. Alternatively, a clamping drive unit 20 can be provided on only one side to achieve the same purpose of tightly stacking the chamber plates 8 and sealing the test chamber 3. It is understood that the L-shaped holes 22 and tension bolts 21 around the chamber plate 8 in this embodiment are optional structures. The sample testing task can be completed by simply placing the clamping drive unit 20 without providing the L-shaped holes 22 and tension bolts 21. However, the addition of L-shaped holes 22 and tension bolts 21 in this embodiment can further improve the robustness of the device.

[0028] The chamber plate 8 has sliding parts 17 on both sides that are slidably connected to the slide rail 15. When changing the electrode sample 2, any two chamber plates 8 can be moved through the slide rail 15 to open the test chamber 3. Any test chamber 3 can be easily opened, facilitating the replacement or monitoring of the electrode sample 2 inside. Figure 2 , 5As shown in Figure 6, the sliding part 17 in this embodiment is a U-shaped ear plate 28 with the opening 23 facing downward on both sides of the chamber plate 8. When in use, the chamber plate 8 is locked onto the guide rod 16 through the U-shaped ear plate 28, thereby achieving the purpose of quickly increasing or decreasing the chamber plate 8, and the chamber plate 8 can be replaced at will, making it convenient and quick to use.

[0029] The support structure component 6 is detachably installed in the test chamber 3 to support and fix the electrode sample 2. The support structure component 6 adopts one or more of the following shapes: flat plate, corrugated mesh 13, and nipple plate. It is detachably installed in the test chamber 3 to support and fix the electrode sample 2. The shape of the support structure component 6 should match the shape of the electrode sample 2. Different shapes and structures are adapted to electrode samples 2 with different porosities and mechanical properties to ensure installation stability and electrolyte flow.

[0030] Furthermore, the structure of the support structure component 6 includes a flat plate, a corrugated mesh 13, and a nipple plate; in the support structure component 6, the thickness of the flat plate is 1-3mm, the thickness of the corrugated mesh 13 is 0.5-2mm, and the thickness of the nipple plate is 1-4mm, and all of them are provided with electrolyte flow holes on their surfaces.

[0031] Preferably, the main components of the plate in the support structure component 6 include highly corrosion-resistant metallic elements such as titanium and stainless steel.

[0032] The advantage of using flat plate material for the aforementioned support structure component 6 is that the flat plate material mainly undertakes the dual functions of support structure and electrolyte distribution control in the electrolytic cell.

[0033] As one of the preferred solutions for using a flat plate material as the supporting structure in this utility model, the high strength of the flat plate material ensures that the electrolytic cell will not deform due to external pressure or internal stress during long-term operation. Secondly, the raised design on the surface of the flat plate material can guide the electrolyte to form a uniform three-dimensional flow pattern in the electrolytic cell, thereby avoiding the phenomenon of excessively high or low local electrolyte concentration, and thus improving the overall efficiency of the electrolysis reaction.

[0034] Preferably, the corrugated mesh 13 in the support structure component 6 is typically made of a highly corrosion-resistant metal alloy, such as a titanium alloy or a nickel-based alloy.

[0035] As a second preferred embodiment of this invention using corrugated mesh 13 as the support structure, the advantage of using corrugated mesh 13 in the support structure component 6 is that it increases the reaction area, promotes electrolyte flow, increases the electrode reaction area, and improves reaction efficiency. The corrugated structure of the corrugated mesh 13 material can change the flow state of the electrolyte, guiding the electrolyte to form a more reasonable flow path in the tank, allowing for more sufficient contact between the electrolyte and the electrode surface, increasing the contact area, and improving the uniformity of current density distribution, thereby significantly improving the rate and efficiency of the electrode reaction and facilitating stable control of reaction conditions.

[0036] Preferably, the papillary plate material used in the support structure component 6 is a corrosion-resistant metal, such as nickel, titanium, or their alloys. Some papillary plates may be coated with a precious metal (such as platinum or iridium) or an oxide coating to further enhance corrosion resistance and conductivity. The advantage of using papillary plates in the support structure component 6 is that their concave-convex papillary structure can support the electrodes and diaphragm, form electrolyte channels through the gaps between the papillae, and also provide a certain degree of conductivity.

[0037] As a third preferred embodiment of this invention using papillary plate material as the support structure, the papillary plate surface has spherical protrusions and other papillary structures, which can naturally form channels for electrolyte flow, making the flow field distribution within the electrolytic cell more uniform. This allows the alkali solution to be evenly distributed throughout the electrolytic cell, providing sufficient reactants for the electrolysis reaction. Furthermore, it can conduct current to the electrode surface, enabling electrons to participate smoothly in the electrolysis reaction, reducing contact resistance, thereby improving electrolysis efficiency and reducing the overall energy consumption of the electrolytic cell.

[0038] Preferably, the support structure is detachably connected to the inner wall of the electrolytic cell body 1, which facilitates the replacement of different types of support structures to adapt to electrode samples 2 of different specifications.

[0039] The heat buffer assembly includes multiple heat buffer chambers 5, which are sealed and installed in the chamber mounting groove 4. The heat buffer chambers 5 are equipped with the same support structure components 6 and sealing gaskets 24 as those in the test chamber 3. The heat buffer chambers 5 are filled with the same support structure components 6 as those in the test chamber 3. The heat buffer assembly balances the heat dissipation at both ends of the electrolytic cell through equivalent heat exchange, so that the temperature of the electrode sample 2 region is uniform. The number of heat buffer chambers 5 on one side is 2-N, preferably 4-6, and they are evenly distributed along the edges of both ends of the electrolytic cell body 1.

[0040] In traditional systems, heat loss mainly originates from the large-area end plates at both ends of the electrolytic cell. The heat dissipation rate of the end plates is much higher than that of the middle area, resulting in uneven temperature distribution of the electrode sample 2. The heat buffer chamber 5, through its installation design close to the test chamber 3, directly receives the heat transfer from the test chamber 3, avoiding additional heat loss due to local environmental differences.

[0041] The heat buffer chamber 5 is filled with the same electrode diaphragm material 7 (such as a composite diaphragm) as the test chamber 3, and its energy consumption characteristics are completely consistent with those of the test area. When heat is lost at both ends of the electrolytic cell due to heat dissipation from the end plates, the heat buffer chamber 5 generates heat through its own equivalent reaction (such as ion conduction and weak electrolysis reaction, the same as in the test chamber 3), or actively consumes "excess heat dissipation at the edges" through heat exchange, thus balancing the overall heat dissipation rate of the electrolytic cell. For example, when testing at high temperatures of 80-100℃, without the heat buffer chamber 5, the temperature at both ends of the electrolytic cell may be 5-8℃ lower than in the middle; however, the heat buffer chamber 5, through equivalent heat exchange, can control the temperature deviation of the electrode sample 2 within ±0.8-1℃, ensuring that the interference of temperature on test data (such as current density and voltage stability) is minimized.

[0042] A heat buffer chamber 5 is attached to the outer test chamber 3. A portion of the heat generated in the test chamber 3 is transferred to the heat buffer chamber 5. The heat buffer chamber 5 then balances this heat loss through slow heat exchange with the outside environment (or through its own equivalent reaction-generated heat), preventing a temperature drop at the edges of the test chamber 3 due to "one-way heat loss." This design eliminates the need for additional temperature control equipment (such as heating elements), achieving passive temperature balance through material properties, simplifying the system structure and reducing energy consumption. Temperature unevenness directly affects the electrolysis reaction rate (e.g., a decrease in temperature leads to a decrease in ion conduction rate, resulting in a higher test voltage). The heat buffer chamber 5 balances the temperature, ensuring uniformity in all test chambers 3 (including edge chambers), allowing test data for multiple samples to be acquired under the same temperature conditions, avoiding "false positive" or "false negative" results caused by temperature differences.

[0043] Specifically, as a preferred embodiment of the installation of the heat buffer chamber 5 in this invention, the chamber is filled with the same electrode diaphragm material 7 as the test area of ​​the main body 1 of the electrolytic cell. This ensures that the energy consumption of the heat buffer chamber 5 is consistent with that of the test area, avoiding additional energy consumption that could interfere with the test results and ensuring the uniformity of the entire electric field. The heat buffer chamber 5 actively undertakes the task of heat exchange with the external environment, consuming edge heat loss. This results in the electrolyte and current field entering the main reaction chamber being in a highly uniform state, thereby ensuring extremely uniform temperature and electric fields in the core test area and obtaining incredibly accurate material test data.

[0044] The aforementioned electrolytic cell key material testing system ensures that electrode sample 2 in the core testing area is in a highly uniform thermo-electrical environment, completely eliminating testing errors caused by edge effects. It solves the problem of uneven temperature of electrode sample 2 caused by rapid heat dissipation over a large area at both ends of the electrolytic cell. The system's versatility is improved through detachable multi-type support structures, enabling rapid, efficient, and accurate testing of key materials in the electrolytic cell. It is applicable to electrode material research and performance evaluation in fields such as fuel cells and water electrolyzers. This invention specifically addresses the issue of inconsistent temperatures at both ends and in the middle, and has the function of testing one or more electrode samples 2 simultaneously. For example, if six different electrode samples 2 need to be tested, they can be installed in different testing chambers 3. In ordinary testing systems, the temperature at both ends of the electrolytic cell is generally lower than the temperature in the middle; this temperature difference leads to different performance, making it impossible to test multiple different samples simultaneously using conventional methods. This invention incorporates a heat buffer component that balances heat dissipation at both ends of the electrolytic cell through equivalent heat exchange, ensuring uniform temperature in the electrode sample 2 area.

[0045] The temperature detection module includes temperature sensors 25 located inside the test chamber 3 and the thermal buffer chamber 5, which collect temperature data in real time and provide feedback to regulate the test environment. The temperature monitoring module is equipped with several high-precision temperature sensors 25.

[0046] From a hardware selection perspective, this module prioritizes the use of K-type thermocouples as temperature sensors 25. This choice is based on the significant advantages of K-type thermocouples in high-temperature testing scenarios. The measurement range of K-type thermocouples covers 0~500°C, which is fully compatible with the high-temperature conditions commonly encountered in the testing of key materials in electrolytic cells, while its 0.1°C resolution can capture minute temperature fluctuations on the surface of electrode sample 2.

[0047] In terms of sensor deployment design, the system adopts a strategy of "full-dimensional coverage + precise positioning" to ensure no blind spots in temperature monitoring. Firstly, a temperature sensor 25 is configured for each electrode sample 2 within the main body 1 of the electrolytic cell, thereby achieving close-proximity monitoring of the electrode sample. Figure 4As shown, this is because electrode sample 2 is the core area of ​​the electrolysis reaction, and its surface temperature directly reflects the intensity and thermal effect of the reaction. Placing the probe end on the electrode plate of the chamber plate allows for more accurate monitoring of the temperature in various parts of the test chamber. For example, when testing the flat electrode sample 2, the sensor probe end is fixed to the center and edge of the electrode plate of the chamber plate through a slot, monitoring the temperature difference between different areas of the electrode in real time during the reaction process, preventing local overheating or uneven heat dissipation from being overlooked. Secondly, as the "container" of the electrolysis reaction, the internal temperature environment of the test chamber 3 indirectly affects the reaction state of electrode sample 2. Therefore, temperature sensors 25 are also installed on the inner wall of each test chamber 3 to monitor the overall temperature of the electrolyte in the chamber and determine whether there are any local temperature anomalies in the electrolyte. Finally, the heat buffer chamber 5 is a key component for balancing heat dissipation at both ends of the electrolytic cell. Its own temperature change directly reflects the thermal balance effect. Therefore, each heat buffer chamber 5 is also equipped with an independent sensor to track the temperature difference between the chamber and the test chamber 3 in real time, providing data support for subsequent optimization of the heat buffer effect.

[0048] From the perspective of data processing and application functions, the temperature monitoring module achieves full lifecycle management of temperature data through a process of "real-time transmission + visualization display + historical storage". The signal collected by the temperature sensor 25 is first transmitted to the data acquisition module, which is responsible for converting the analog signal output by the sensor into a digital signal and filtering out interference noise during signal transmission to ensure data accuracy. Subsequently, the digital signal is transmitted to the central control system, which displays the temperature data of each monitoring point in real time in the form of curves, numerical lists, etc. During the test, the operator can intuitively see the real-time temperature change trend of each part in each test chamber 3, the corresponding temperature of test chamber 3, and the temperature of the thermal buffer chamber 5 through the control system interface. If the temperature deviation of a certain detection part exceeds ±1°C, the system will immediately issue an early warning, prompting the operator to adjust the test parameters (such as adjusting the electrolyte flow rate and optimizing the diaphragm filling amount of the thermal buffer chamber 5) to achieve real-time feedback control of the test environment. In addition, the module is also equipped with a data storage module for long-term storage of historical temperature data of electrode sample 2 and thermal buffer chamber 5. This historical data can be used for subsequent in-depth analysis. For example, when comparing the durability of different batches of electrode sample 2, historical temperature data can be retrieved to determine whether the performance degradation of the sample is related to temperature fluctuations during long-term testing. When optimizing the design of thermal buffer chamber 5, historical data can also be analyzed to determine the optimal temperature difference range between thermal buffer chamber 5 and test chamber 3, further improving the thermal balance effect.

[0049] In the actual test, in the implementation of testing the flat plate electrode sample 2, the operator first fixed the flat plate electrode sample 2 to the flat plate support structure using a slot. K-type thermocouples were arranged on the electrode plates of the chamber plate corresponding to the center and four corners of the flat plate electrode sample 2, with the sensor probes facing the electrode surface. A temperature sensor 25 was also configured on each of the heat buffer chambers 5 on both sides of the test chamber 3. After the test was started, 1.8-2.0 mol / L KOH electrolyte was introduced. The central control system displayed the temperature data of each monitoring point in real time: In the initial stage, the surface temperature of the electrode sample 2 and the temperature of the test chamber 3 were both stable at 85°C, and the temperature difference between the heat buffer chamber 5 and the test chamber 3 was 0.3°C, indicating good thermal balance. As the test progressed, the surface temperature of the electrode sample 2 gradually increased to 87°C, and the temperature deviation between the center and corners was always controlled within ±0.5°C. The temperature of the test chamber 3 stabilized at 86°C, and the temperature of the heat buffer chamber 5 simultaneously increased to 86.2°C, with no obvious temperature anomalies. After 24 hours of continuous testing, the data storage module recorded the temperature change curve throughout the process. By analyzing the curve, the operator found that the surface temperature of electrode sample 2 reached a stable state after 12 hours of testing, with no continuous heating or cooling trend. Combined with the current density and voltage data collected at the same time, it can be judged that the performance of the flat plate electrode sample 2 is excellent under stable temperature conditions, and the temperature monitoring data provides key support for the conclusion of "stable performance".

[0050] In the embodiment of testing the mesh electrode sample 2, considering the structural characteristics of the corrugated electrode sample 2, the temperature sensor 25 is fixed at the peak and trough positions of the corrugated mesh 13 support structure to ensure that the temperature of different protruding parts of the electrode sample 2 can be monitored; the test chamber 3 is equipped with three temperature sensors 25, located at the inlet, middle and outlet of the chamber respectively, to monitor the temperature change during the electrolyte flow process; each of the heat buffer chambers 5 at both ends of the electrolytic cell is equipped with one sensor. After the test was started, the system simultaneously heated the test chamber 3 and the heat buffer chamber 5 to 90°C. Through the central control system, it could be observed that the temperature at the peaks and troughs of the corrugated electrode sample 2 remained stable at approximately 90°C, with a deviation of ≤±0.3°C. The electrolyte temperature was 89.8°C when it entered the test chamber 3 from the inlet, rose to 90°C as it flowed through the middle, and remained at 90°C when it flowed out from the outlet, indicating no significant temperature loss in the electrolyte. The temperature of the heat buffer chamber 5 remained consistently between 89.9-90.1°C, with a very small temperature difference from that of the test chamber 3. After 12 hours of testing, historical data retrieved from the data storage module showed that the temperature fluctuations at all monitoring points did not exceed ±0.8°C throughout the test, fully verifying the accuracy and stability of the temperature monitoring module in the testing of the complex structure electrode sample 2, and providing reliable temperature background data for subsequent analysis of the electrode's catalytic activity and durability.

[0051] A testing method for a multi-chamber parallel testing electrolytic cell material testing device includes the following steps: (1) Sample fitting and installation: Based on the structure and characteristics of electrode sample 2, select the corresponding support structure (flat plate, corrugated mesh 13, convex plate), fix electrode sample 2 to the support structure, and put them into the electrolytic cell test chamber 3 together; (2) Deployment of heat buffer chamber 5: Install heat buffer chamber 5 in the chamber installation slots 4 at both ends of the electrolytic cell, ensuring that the chamber is sealed and that the internal electrodes, diaphragms, and support materials are consistent with the test chamber 3; (3) Test procedure start: Inject electrolyte, start the electrolysis test program, and collect the surface temperature of electrode sample 2 in real time through the temperature monitoring module and record the temperature fluctuation range; (4) Data acquisition and analysis: Simultaneously record performance parameters such as electrolysis voltage, current, and gas production, and analyze the performance of electrode materials under a uniform temperature field in combination with temperature data.

[0052] Example 1: An electrolytic cell material testing device for multi-chamber parallel testing, used to test a flat plate electrode sample 2. The device includes the following steps: (1) Selection of support structure: Since the electrode sample 2 is in the form of a flat plate, a flat plate support structure (thickness 1-3mm, with electrolyte flow holes on the surface) is selected. The electrode sample 2 is fixed to the flat plate support through the slot and the main body of the electrolytic cell 1 is assembled. (2) Heat buffer configuration: Two heat buffer chambers 5 are installed at each end of the electrolytic cell and filled with the same composite membrane material 7 as the test chamber 3 to ensure heat exchange equivalence; (3) Test process: Inject 1.8-2.0 mol / L KOH electrolyte, start the test, the temperature monitoring module shows that the surface temperature deviation of electrode sample 2 is ≤±1℃, the test lasts for 24 hours, and the current density, voltage fluctuation and other performance parameters are collected to verify the stability of the material.

[0053] The above experiments show that the time for a single test is reduced by 25% compared to the existing system.

[0054] Preferably, the size and shape of the slot can be pre-designed to ensure that the position of the electrode sample 2 in the slot (such as the distance between it and the diaphragm and the counter electrode) is consistent, thereby reducing experimental errors or uneven reactions caused by installation deviations.

[0055] When it is necessary to replace electrode sample 2 with one of different specifications or materials, simply remove the old sample from the slot and insert the new sample; no other parts need to be disassembled.

[0056] Example 2: An electrolytic cell material testing device for multi-chamber parallel testing, testing a mesh electrode sample 2. The device includes the following steps: (1) Support structure adaptation: For corrugated electrode sample 2, a corrugated mesh 13 support structure (mesh size matches the electrode corrugation period, thickness 0.5-2mm) is selected, and the sample is fixed by snap-on installation; (2) Thermal buffering enhancement: Three thermal buffer chambers 5 are installed at each end, filled with composite diaphragm material 7, and the chambers are heated to 80-100℃ simultaneously with the test chamber 3; (3) Test and verification: Electrolyte is introduced and the test is started. Temperature monitoring shows that the temperature uniformity deviation of electrode sample 2 is ≤ ±0.8℃. After 12 hours of testing, alkaline solution is collected, and the catalytic activity and durability data of the electrode are analyzed to accurately evaluate the material performance.

[0057] Preferably, the buckle allows for quick installation and removal of the electrode sample 2 without tools, making it suitable for situations requiring frequent sample changes. Its fixing force is relatively uniform, reducing damage to the sample surface.

[0058] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-chamber parallel testing device for electrolytic cell materials, characterized in that, include: The main body of the electrolytic cell has multiple test chambers inside that contain electrode samples and electrolytes; Several small installation slots are symmetrically opened on both ends of its sidewalls for arranging heat buffer chambers; The main body of the electrolytic cell includes multiple stacked chamber plates. Each chamber plate includes a middle plate, an end plate, and an end pressure plate. The middle plate has a structure with concave cavities on both sides. One side of the end plate has a concave cavity, and the other side is used to set a small chamber mounting groove. The support structure assembly is detachably installed in the test chamber to support and fix the electrode sample; The thermal buffer assembly includes multiple thermal buffer chambers, which are sealed and installed in the chamber mounting slots. The thermal buffer chambers are equipped with the same support structure components and sealing gaskets as the test chamber. The thermal buffer assembly balances the heat dissipation at both ends of the electrolytic cell through equivalent heat exchange, so that the temperature of the electrode sample area is uniform.

2. The electrolytic cell material testing device for multi-chamber parallel testing according to claim 1, characterized in that, The main body of the electrolytic cell includes multiple stacked chamber plates. The side of each chamber plate has a concave cavity. The concave cavities of two adjacent chamber plates fit together to form a sealed test chamber. The edges of the two fitted concave cavities hold the diaphragm sample to be tested. The diaphragm divides the test chamber into an anode side and a cathode side. Electrode samples to be tested are respectively placed in the anode side and the cathode side.

3. The electrolytic cell material testing device for multi-chamber parallel testing according to claim 2, characterized in that, The outermost chamber plate has a small chamber mounting groove on its outer side for installing heat buffer chambers. The number of heat buffer chambers is 4-6, and they are evenly distributed along the edges of both ends of the electrolytic cell body.

4. The electrolytic cell material testing device for multi-chamber parallel testing according to claim 1, characterized in that, The heat buffer chamber is equipped with the same electrode membrane material as the main test area of ​​the electrolytic cell, so that the energy consumption of the heat buffer chamber is consistent with that of the test area, avoiding extra energy consumption from interfering with the test results.

5. The electrolytic cell material testing device for multi-chamber parallel testing according to claim 1, characterized in that, The structure of the support structure component includes a flat plate, a corrugated mesh, and a raised plate; the surface of the support structure component is provided with electrolyte flow holes.

6. The electrolytic cell material testing device for multi-chamber parallel testing according to claim 2, characterized in that, The main body of the electrolytic cell also includes a frame body, with slide rails symmetrically arranged on the front and rear sides of the frame body. The chamber plates are provided with sliding parts on both sides that are slidably connected to the slide rails. When changing electrode samples, the test chamber can be opened by moving between any two chamber plates through the slide rails.

7. The electrolytic cell material testing device for multi-chamber parallel testing according to claim 6, characterized in that, The frame includes a fixed end plate, an end pressure plate, and a pressing drive unit. The two fixed end plates are fixedly connected by a slide rail. An end pressure plate is provided on the inner side of the fixed end plate. A pressing drive unit is provided on the fixed end plate. The free end of the pressing drive unit is connected to the end pressure plate. The pressing drive unit applies pressure to the end pressure plate, so that the sealing point at the joint of the multiple stacked chamber plates is sealed.

8. The electrolytic cell material testing device for multi-chamber parallel testing according to claim 6, characterized in that, The frame includes end plates and tension bolts, and multiple test chambers are set between the two end plates. Multiple L-shaped holes are provided around the chamber plate. One end of the L-shaped hole forms an opening at the edge of the end plate. The tension bolt enters the L-shaped hole through the opening to pull the two end plates closer and fix the test chamber between them.

Images