An integrated experimental platform for measuring the electrolysis performance and internal temperature of an alkaline electrolyzer

Abstract

The application relates to an integrated experimental table system for measuring the electrolysis performance and internal temperature of an alkaline water electrolyzer, which comprises an environmental box, an experimental alkaline water electrolyzer, a direct current power supply, hydrogen side and oxygen side gas-liquid separation bottles, a temperature measuring wire, a paperless recorder, and a constant temperature water bath. The experimental alkaline water electrolyzer can change the flow field design, the size of the cell, the heat dissipation, and the environmental temperature control components of the cell to meet diversified experimental requirements. An alkaline solution circulating pump connects the gas-liquid separation bottles and the electrolyzer to realize the circulation of the alkaline solution. A computer terminal is in communication connection with the direct current power supply, the paperless recorder, and the alkaline solution circulating pump for data collection and component control. The hydrogen side and oxygen side gas-liquid separation bottles have specific structures for gas-liquid separation and alkaline solution treatment. Compared with the prior art, the experimental table system in the application is simple to disassemble and assemble, stable in operation, can decouple key parameters, obtain internal dynamic temperature data of the electrolyzer, has high freedom, can guide the formulation of industrial hydrogen production strategies, and helps the research and product development of the alkaline water electrolyzer.

Description

Technical Field

[0001] This invention relates to the field of electrolytic cell technology, and in particular to an integrated experimental platform system for measuring the electrolytic performance and internal temperature of an alkaline water electrolytic cell. Background Technology

[0002] Against the backdrop of a global energy crisis and worsening environmental pollution, promoting a clean energy revolution has become a major trend in the world's energy industry. In recent years, China has increasingly emphasized the development of new energy industries, particularly investing more resources and attention in the hydrogen energy industry. It is expected that hydrogen energy will play an increasingly important role in promoting China's energy structure reform and ensuring national energy security. Currently, the main technological routes for hydrogen production through water electrolysis include alkaline, proton exchange membrane, and solid oxide electrolysis. Among these technologies, alkaline water electrolysis is the oldest and most mature method, with simple and easy-to-operate equipment, and has already been commercialized. It is reported that the hydrogen production capacity of a single electrolyzer has exceeded 3,000 cubic meters per hour.

[0003] A literature search of existing technologies revealed that current research on alkaline water electrolysis systems mainly focuses on electrolysis system control methods, diaphragm and electrode materials, and preparation methods, aiming to improve hydrogen production efficiency, increase product purity, and reduce costs. Chinese patent document CN 116516412A discloses an alkaline water hydrogen production control system and method configured with a main server, switch, data acquisition equipment, and instruction execution equipment, achieving centralized control of the alkaline water hydrogen production system. Chinese patent document CN 220643283U discloses a method for recovering waste heat from an electrolysis hydrogen production system for heating the raw water, designing a heat exchange device and utilizing waste heat from the electrolysis system to heat the raw water, improving the overall economic efficiency of the system. Chinese patent document CN117286538A discloses a high-temperature resistant / wide-temperature-range applicable alkaline water electrolysis hydrogen production composite diaphragm and its preparation method, which involves impregnating and drying a modified PPS cloth with a special treatment solution to obtain a novel high-temperature resistant / wide-temperature-range applicable alkaline water electrolysis hydrogen production composite diaphragm. Chinese patent document CN117626323A discloses a method for preparing a catalytic material for alkaline water electrolysis hydrogen production. This method employs a combination of spraying, machining, and hydrothermal synthesis to prepare the catalytic material. This method is simple, low-cost, and balances both the catalytic performance and mechanical properties of the electrode catalytic material. While existing research has improved the efficiency of alkaline water electrolysis hydrogen production from the perspectives of system control, materials, and preparation methods, it lacks sufficient research on testing methods for electrolysis hydrogen production systems and the electrothermal-mass coupling within the electrolyzer. There is no complete testing system for feasibility testing of electrode and tank designs, and the electrothermal-mass coupling relationship within the electrolyzer is not clearly understood. This hinders the development of alkaline water electrolysis technology.

[0004] In fact, the electrothermal-mass coupling relationship inside an alkaline water electrolyzer is a challenging research problem. On the one hand, when the electrodes react, gas is generated on their surface and transferred to the electrolyte. When gas covers the electrode surface, it reduces the effective reaction area and lowers hydrogen production efficiency. On the other hand, the generated gas increases ohmic resistance and raises the reaction surface temperature, leading to improved reaction efficiency. Furthermore, bubbles also affect heat transfer, and the flow rate affects the bubble coverage and heat transfer on the electrode surface. Therefore, the electrothermal-mass interactions inside an alkaline water electrolyzer are complex and directly impact the electrolyzer design and electrolysis system control. However, due to the sealed nature and alkaline environment of the alkaline water electrolyzer, it is difficult to measure internal electrothermal-mass parameters (current density, temperature, flow rate, gas volume fraction, etc.). This makes it difficult to comprehensively consider the internal electrothermal-mass influence when designing and formulating control strategies for alkaline water electrolyzers, thus preventing a significant improvement in hydrogen production efficiency.

[0005] Therefore, an effective method is needed to measure the internal electrothermal properties of an alkaline water electrolyzer. Among these properties, temperature measurement is relatively easy to implement. Understanding the internal temperature distribution characteristics can guide design and control, clarify the actual operating temperature of the electrolyzer, and improve the temperature at lower points to avoid safety issues caused by hot spots. While temperature measurement technologies are mature, limitations such as sealing and strong alkali corrosion restrict their application in alkaline water electrolysis systems to the outside of the electrolyzer (external inlet and outlet). This results in a significant discrepancy between the measured temperature and the actual internal temperature, highlighting the lack of an effective method for directly measuring the internal temperature. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology by providing an integrated experimental platform system for measuring the electrolysis performance and internal temperature of an alkaline water electrolyzer. The experimental platform system is easy to assemble and disassemble, operates stably, can decouple key parameters, obtain dynamic temperature data inside the electrolyzer, has a high degree of freedom, can guide the formulation of industrial hydrogen production strategies, and assist in the research and development of alkaline water electrolyzers and related products.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] This invention provides an integrated experimental platform system for measuring the electrolytic performance and internal temperature of an alkaline water electrolyzer, comprising an environmental chamber, an experimental alkaline water electrolyzer, a DC power supply, hydrogen-side gas-liquid separation bottles and oxygen-side gas-liquid separation bottles, temperature measuring wires, a paperless recorder, and a constant temperature water bath, wherein specifically:

[0009] The experimental alkaline water electrolysis cell is located in the environmental chamber. The experimental alkaline water electrolysis cell can meet diverse experimental needs by changing the flow field design, chamber size, heat dissipation and tank ambient temperature control components.

[0010] A DC power supply is connected to the alkaline water electrolysis cell used in the experiment to provide electrical energy for electrolysis.

[0011] Both the hydrogen-side gas-liquid separation bottle and the oxygen-side gas-liquid separation bottle are connected to the alkaline water electrolyzer used in the experiment, and are used for gas-liquid separation of the electrolyzer outlet product and for alkaline replenishment and storage.

[0012] The temperature measuring wire has its temperature measuring end located inside the alkaline water electrolysis cell used in the experiment.

[0013] A paperless recorder, connected to the temperature measuring line, is used to process the electrical signal transmitted from the temperature measuring line, convert it into a temperature signal, and record it.

[0014] A constant temperature water bath is used to heat the alkali solution, thereby adjusting and controlling the working temperature of the electrolytic cell.

[0015] Furthermore, the experimental platform system also includes an alkaline solution circulation pump, the inlet of which is connected to the hydrogen-side gas-liquid separation bottle and the oxygen-side gas-liquid separation bottle respectively, and the outlet of which is connected to the alkaline solution inlet of the experimental alkaline water electrolysis cell.

[0016] Furthermore, the experimental platform system also includes a computer terminal, which is communicatively connected to the DC power supply, the paperless recorder, and the alkali circulation pump.

[0017] Furthermore, the computer terminal is used to acquire voltage and current data of the received DC power supply, as well as temperature data of the paperless recorder, and is also used for controlling the DC power supply and the alkali circulation pump.

[0018] Furthermore, the experimental alkaline water electrolyzer includes an outer shell, an internal flow field structure, and chamber partition components, specifically:

[0019] An internal flow field structure is provided inside the outer shell, and the internal flow field structure includes a guide vane structure that can be replaced or rearranged.

[0020] The small chamber partition component includes multiple addable or removable partition plates, which can change the electrolyte chamber volume and electrode spacing by adding or removing partition plates. This allows for the study of the effects of different electrode parameters and chamber conditions on electrolysis performance by changing the electrode layout and chamber size.

[0021] Furthermore, the experimental alkaline water electrolysis cell also includes a heat insulation layer disposed on the outer shell.

[0022] Furthermore, the capacity of the hydrogen-side gas-liquid separation bottle and the oxygen-side gas-liquid separation bottle is 2L-3L, the bottle cap is made of polytetrafluoroethylene material, and the cap has three holes for introducing gas-liquid mixture, discharging gas, and extracting alkaline solution, respectively. The bottom openings of the hydrogen-side gas-liquid separation bottle and the oxygen-side gas-liquid separation bottle are connected to each other through a connecting pipe to form a connector structure.

[0023] Furthermore, the temperature measuring wire is a K-type or T-type thermocouple.

[0024] Furthermore, the temperature measuring line extends from the inlet or outlet of the experimental alkaline water electrolysis cell into the internal flow field structure of the flow field.

[0025] Furthermore, the cover is provided with a first through hole, a second through hole, and a third through hole for introducing a gas-liquid mixture, discharging gas, and extracting alkaline solution, respectively. The first through hole, the second through hole, and the third through hole are respectively provided with a first conduit, a second conduit, and a third conduit.

[0026] One end of the first conduit is inserted into the middle of the bottle, and the other end is connected to the outlet of the experimental alkaline electrolysis cell;

[0027] One end of the second conduit is inserted into the upper part of the bottle, and the other end is connected to the conduit used for venting gas;

[0028] One end of the third conduit is inserted into the lower part of the bottle, and the other end is connected to the inlet of the alkali circulation pump.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1) The laboratory alkaline water electrolysis system of this invention is easy to assemble and disassemble, and operates stably and reliably. Its unique design can effectively decouple key parameters affecting the efficiency of hydrogen production by electrolysis, including load, temperature, flow rate, and ambient temperature. By accurately analyzing the sensitivity of these parameters to the electrochemical performance of the electrolyzer, the control strategy of the actual industrial hydrogen production electrolysis system can be precisely guided, which helps to improve the efficiency and stability of industrial hydrogen production, reduce energy consumption and costs, and optimize industrial production processes.

[0031] 2) This invention successfully overcomes many difficulties faced by the electrolytic cell, such as high corrosion, conductivity, and sealing requirements. By ingeniously arranging temperature measuring wires in a small chamber, it not only achieves accurate acquisition of dynamic temperature data inside the electrolytic cell, but also reveals the close correspondence between the internal temperature distribution of the electrolytic cell and its operating conditions and electrochemical performance. This has a very important role in promoting in-depth research on the electrothermal-mass coupling relationship of alkaline water electrolytic cells, and provides key data support and practical foundation for theoretical research and technological breakthroughs in related fields.

[0032] 3) This invention possesses a high degree of flexibility and freedom, allowing for diverse and flexible modifications to meet various scientific research and product development needs. For example, it can easily change the size of the electrolyzer to adapt to experimental research of different scales; and it can perfectly cooperate with computers and CNC components to achieve effective verification of automatic control algorithms, thus being widely applicable to various scientific research work, such as performance testing of new electrodes and diaphragms, as well as the optimization of the internal design of the electrolyzer and the development and improvement of electrolytic hydrogen production control strategies in the product development process, effectively promoting the innovative development and application expansion of the alkaline water electrolysis technology field. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall system structure of the present invention.

[0034] In the diagram, 1 is the experimental alkaline electrolytic cell, 2 is the DC power supply, 3 is the computer terminal, 4 is the paperless recorder, 5 is the constant temperature water bath, 6 is the hydrogen-side gas-liquid separation bottle, 7 is the oxygen-side gas-liquid separation bottle, 8 is the alkaline solution circulation pump, 9 is the temperature measuring line, 10 is the environmental chamber, 11 is the first conduit, 12 is the second conduit, and 13 is the third conduit.

[0035] Figure 2 This is a schematic diagram showing the location of the opening in a gas-liquid separator bottle. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0037] Example 1

[0038] For a schematic diagram of the integrated experimental platform system for measuring the electrolysis performance and internal temperature of the alkaline water electrolyzer in this embodiment, please refer to [link / reference needed]. Figure 1 .

[0039] The experimental alkaline water electrolyzer 1 is used to control experimental variables such as electrolyzer design and tank size. Its size is smaller than a real electrolyzer, making it easy to assemble and disassemble. The flow field and chamber size can be designed independently, and heat dissipation and tank ambient temperature are easily controlled. The experimental alkaline water electrolyzer 1 includes an outer shell, an internal flow field structure, and chamber partition components. Specifically: the internal flow field structure is located inside the outer shell and includes replaceable or rearrangeable guide plate structures; the chamber partition components include multiple addable or removable partitions, allowing the volume of the electrolyte chambers and the electrode spacing to be changed by adding or removing partitions. This allows for the study of the effects of different electrode parameters and chamber conditions on electrolysis performance by altering the electrode layout and chamber size. The experimental alkaline water electrolyzer 1 also includes a heat insulation layer on the outer shell.

[0040] DC power supply 2 is used to provide electrical energy to the experimental alkaline water electrolysis cell 1.

[0041] Computer terminal 3 is used to collect power data of the corresponding electrochemical performance of the electrolytic cell and temperature data processed by paperless recorder 4, and to control the relevant components when the power supply and alkali circulation pump 8 are selected as programmable or electrically controllable.

[0042] The paperless recorder 4 is used to process the electrical signal transmitted from the temperature measuring line 9, convert it into a temperature signal, and record it.

[0043] The constant temperature water bath 5 is used to heat the alkali solution and control the working temperature of the electrolytic cell 1.

[0044] Hydrogen-side gas-liquid separation bottle 6 and oxygen-side gas-liquid separation bottle 7 are used for gas-liquid separation of the electrolytic cell outlet product and for replenishment and storage of alkali solution. The bottle body has a certain depth and a capacity of 2L-3L. The bottle cap is made of corrosion-resistant polytetrafluoroethylene. The cap has three holes, which are used to introduce gas-liquid mixture, discharge gas, and extract alkali solution, respectively. The bottom of the two bottles has holes and they are connected to each other to form a connector.

[0045] The alkali circulation pump 8 is used for alkali water circulation in experimental electrolysis systems to control the flow rate. It requires corrosion resistance and controllable flow rate. It can be equipped with digital control and display functions or use a combination of corrosion-resistant hose and peristaltic pump.

[0046] Temperature measuring wire 9 is used to convert the internal temperature of electrolytic cell 1 into an electrical signal for input into the recorder. It is a K-type or T-type thermocouple, which is small in size, highly sensitive, and has an insulated and corrosion-resistant surface. It is arranged in the flow field inside electrolytic cell 1, with an anti-corrosion and insulated surface. The length is more than 20cm. It can be sealed with 0.05mm-0.1mm thick ultra-thin Teflon tape or embedded in ultra-fine Teflon tube. The opening is sealed with epoxy resin.

[0047] In practice, the holes for introducing the gas-liquid mixture in the hydrogen-side gas-liquid separation bottle 6 and the oxygen-side gas-liquid separation bottle 7 are connected to short tubes inside the bottles, with the tube openings located above the liquid surface. The holes for discharging gas ensure that the pressure inside the bottle is approximately equal to atmospheric pressure and can be used in conjunction with the bottle body to regulate the liquid level and replenish deionized water. The holes for extracting alkaline solution are connected to long tubes inside the bottles, with the tube openings located in the lower middle part between the liquid surface and the bottom of the bottle.

[0048] In practice, the main body of the alkaline water electrolysis cell 1 used in the experiment has a single-inlet and double-outlet or double-inlet and double-outlet liquid in ...

[0049] In practical implementation, the overall piping material of the system can be PTFE hose or 316L steel pipe. If the alkaline solution circulation pump 8 is a peristaltic pump, the pipeline passing through the pump should be made of special hose to resist friction and corrosion. If a mechanical anti-corrosion pump is selected, the system can be built with 316L steel pipe, and the pipeline can be covered with an insulation layer.

[0050] In specific implementation, the temperature measuring wire 9 is arranged inside the flow field and encapsulated with Teflon for corrosion protection and insulation. The encapsulation methods include Teflon tape encapsulation, Teflon capillary tube encapsulation, and Teflon film welding encapsulation. The temperature measuring wires treated by the Teflon tape encapsulation method and the Teflon film welding method can be directly clamped between the electrode plate and the sealing ring. The capillary tube encapsulation method requires opening a hole at the alkaline inlet / outlet pipeline of the electrolytic cell 1 for arrangement.

[0051] In practice, the paperless recorder 4 converts the electrical signal of the temperature measuring line 9 into a temperature value, and high-frequency sampling enables dynamic temperature measurement, with a recording interval of approximately 0.02 seconds.

[0052] In specific implementation, the capacity of the hydrogen-side gas-liquid separation bottle 6 and the oxygen-side gas-liquid separation bottle 7 is 2L-3L. The bottle cap is made of polytetrafluoroethylene material and has three holes, which are used to introduce gas-liquid mixture, discharge gas, and extract alkaline solution, respectively. The bottom openings of the hydrogen-side gas-liquid separation bottle 6 and the oxygen-side gas-liquid separation bottle 7 are connected to each other through a connecting pipe to form a connector structure.

[0053] In practice, the environmental chamber 10 is used to control the ambient temperature around the electrolytic cell 1. The environmental chamber 10 typically consists of an outer shell forming the main frame, made of a material with strength and thermal insulation, such as metal or hard plastic, with rust-proof or insulating treatment. Inside the chamber is a temperature control system, including heating and cooling components such as electric heating wires, a compressor cooling system or a semiconductor cooling chip, as well as temperature sensors such as thermistors or thermocouples, to achieve precise temperature control. It is equipped with a ventilation system, including air inlets, air outlets, and a fan. The air inlets have air filters, and the fan promotes air circulation. The inner walls or the space between the outer shell and the interior are insulated with layers such as foam plastic, rock wool, or aerogel to reduce heat transfer. There is also a control system including a control circuit board and an operation panel. The control circuit board integrates various electronic components to run the temperature control algorithm, and the operation panel allows the experimenter to set the temperature, adjust the fan speed, and perform other operations.

[0054] The temperature measuring wire 9 is a K-type or T-type thermocouple. The temperature measuring wire 9 extends from the inlet or outlet of the experimental alkaline water electrolysis cell 1 into the internal flow field structure.

[0055] For specific applications, please refer to Figure 2The cap has a first through hole, a second through hole, and a third through hole for introducing a gas-liquid mixture, discharging gas, and extracting alkaline solution, respectively. A first conduit 11, a second conduit 12, and a third conduit 13 are respectively installed on the first, second, and third through holes. One end of the first conduit 11 is inserted into the middle of the bottle body, and the other end is connected to the outlet of the experimental alkaline electrolysis cell 1. One end of the second conduit 12 is inserted into the upper part of the bottle body, and the other end is connected to the outlet for discharging gas. One end of the third conduit 13 is inserted into the lower part of the bottle body, and the other end is connected to the inlet of the alkaline solution circulation pump 8. The bottom openings of the hydrogen-side gas-liquid separation bottle 6 and the oxygen-side gas-liquid separation bottle 7 are interconnected via connecting pipes to form a connecting structure.

[0056] In practical applications, such as Figure 1 As shown, the integrated experimental platform for electrolytic performance and internal temperature measurement of the alkaline water electrolyzer in this invention includes two parts: electrochemical performance testing and internal temperature measurement. The former includes an experimental alkaline water electrolyzer 1, a DC power supply 2, a computer terminal 3, a constant temperature water bath 5, a hydrogen-side gas-liquid separation bottle 6, an oxygen-side gas-liquid separation bottle 7, an alkaline solution circulation pump 8, and an environmental chamber 10; the latter includes a paperless recorder 4 and a temperature measuring wire 9. The main laboratory alkaline water electrolyzer 1 has a single-inlet / double-outlet or double-inlet / double-outlet liquid inlet / outlet configuration. The former can be equipped with only one alkaline solution circulation pump 8, and the alkaline solution circulation outlets of the hydrogen-side and oxygen-side gas-liquid separation bottles need to be connected via a T-connector. Because the vent ensures that the gas pressure inside the bottle is the same as the outside pressure, the alkaline solution circulation pump can normally draw alkaline solution from the bottle to complete the alkaline solution circulation; and because there is a connecting pipe between the gas-liquid separation bottles, the alkaline solution level in the two bottles can always be kept consistent to support long-term testing. If the inlet and outlet are both inlet and outlet, two alkali circulation pumps 8 can be configured to draw alkali from the bottle to complete the circulation. The overall piping material can be PTFE hoses or 316L steel pipes. If a peristaltic pump is used for the alkali circulation pump 8, the piping passing through the pump must use specially designed hoses to resist friction and corrosion, such as fluororubber hoses. If a mechanically corrosion-resistant pump is used, a system can be built using 316L steel pipes. To reduce the impact of the piping on the alkali temperature, the piping can be covered with an insulation layer, such as an aerogel layer or a fiberglass layer. The alkali temperature in the testing system is mainly controlled by the constant temperature water bath 5, and the ambient temperature is controlled by the environmental chamber 10. Power supply and data collection are achieved by a DC power supply 2 and a computer terminal 3, respectively. For small electrolytic cells (where the electrolysis current requirement is less than the power supply capacity of the electrochemical workstation), an electrochemical workstation can be used instead of a DC power supply and a computer. The electrochemical testing section can perform polarization curve testing, and the controllable variables include reaction temperature, alkaline solution flow rate, ambient temperature, and reaction current. It can also perform long-term electrode and diaphragm stability and lifespan testing to meet the R&D needs of alkaline water electrolyzers.

[0057] In practical applications, the integrated experimental platform temperature measurement component proposed in this invention includes a paperless recorder 4 and a temperature measuring wire 9. Accurate temperature measurement of the reaction zone can be achieved by arranging measuring points inside the flow field. The temperature measuring wire, placed inside the flow field, must overcome the corrosiveness of the alkaline solution and ensure the electrolytic cell is sealed while maintaining insulation of the wire itself. It can be encapsulated using insulating materials such as Teflon, through methods including Teflon tape encapsulation, Teflon capillary tubes, and Teflon film welding. Temperature measuring wires treated with tape encapsulation and film welding can be directly clamped between the electrode plate and the sealing ring, with minimal impact on sealing performance, simple installation, and suitability for short-term measurements. The capillary tube encapsulation method offers high reliability, but to ensure sealing, it cannot be directly clamped between the electrode plate and the sealing ring; therefore, an opening must be made at the alkaline inlet / outlet pipe of the electrolytic cell. The paperless recorder 4 can convert the electrical signal of the temperature measuring wire 9 into a temperature value, and high-frequency sampling enables dynamic temperature measurement.

[0058] In summary, the integrated experimental platform for alkaline water electrolyzers proposed in this invention can realize the measurement of the electrochemical performance and internal temperature of alkaline water electrolyzers, with multiple variables controllable and capable of long-term operation, basically meeting the needs of experiments and research and development.

[0059] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A system for integrating experimental setup for measuring the electrolysis performance and internal temperature of an alkaline water electrolyzer, characterized in that, include: Environmental chamber (10); The experimental alkaline water electrolysis cell (1) is located in the environmental chamber (10). The experimental alkaline water electrolysis cell (1) can meet diverse experimental needs by changing the flow field design, chamber size, heat dissipation and tank environment temperature control components. A DC power supply (2) is connected to the experimental alkaline water electrolysis cell (1) to provide electrolytic energy; The hydrogen-side gas-liquid separation bottle (6) and the oxygen-side gas-liquid separation bottle (7) are both connected to the experimental alkaline water electrolyzer (1) for gas-liquid separation of the electrolyzer outlet product and for alkaline replenishment and storage. The temperature measuring wire (9) has its temperature measuring end located inside the alkaline water electrolysis cell (1) used in the experiment; The paperless recorder (4) is connected to the temperature measuring line (9) and is used to process the electrical signal transmitted from the temperature measuring line (9), convert it into a temperature signal, and record it. A constant temperature water bath (5) is connected to the alkali outlet of the experimental alkaline electrolysis cell (1) for heating the alkali solution, thereby adjusting and controlling the working temperature of the electrolysis cell (1). The experimental platform system also includes an alkaline circulating pump (8), the inlet of which is connected to the hydrogen-side gas-liquid separation bottle (6) and the oxygen-side gas-liquid separation bottle (7) respectively, and the outlet of which is connected to the alkaline inlet of the experimental alkaline water electrolysis cell (1). The experimental platform system also includes a computer terminal (3), which is communicatively connected to the DC power supply (2), the paperless recorder (4), and the alkaline solution circulation pump (8); The experimental alkaline water electrolysis cell (1) includes: shell; An internal flow field structure is provided inside the outer shell, and the internal flow field structure includes a guide vane structure that can be replaced or rearranged. The small chamber partition component includes multiple addable or removable partition plates, which can change the electrolyte chamber volume and electrode spacing by adding or removing partition plates. This allows for the study of the effects of different electrode parameters and chamber conditions on electrolysis performance by changing the electrode layout and chamber size.

2. The integrated experimental platform system for measuring the electrolytic performance and internal temperature of an alkaline water electrolyzer according to claim 1, characterized in that, The computer terminal (3) is used to acquire voltage and current data of the receiving DC power supply (2), and temperature data of the paperless recorder (4), and is also used to control the DC power supply (2) and the alkaline circulation pump (8).

3. The integrated experimental platform system for measuring the electrolytic performance and internal temperature of an alkaline water electrolyzer according to claim 1, characterized in that, The experimental alkaline water electrolysis cell (1) also includes a heat insulation layer disposed on the outer shell.

4. The integrated experimental platform system for measuring the electrolytic performance and internal temperature of an alkaline water electrolyzer according to claim 1, characterized in that, The hydrogen-side gas-liquid separator (6) and the oxygen-side gas-liquid separator (7) have a capacity of 2L-3L. The bottle caps are made of polytetrafluoroethylene and have three holes for introducing gas-liquid mixture, discharging gas, and extracting alkaline solution, respectively. The bottom openings of the hydrogen-side gas-liquid separator (6) and the oxygen-side gas-liquid separator (7) are connected to each other through a connecting pipe to form a connector structure.

5. The integrated experimental platform system for measuring the electrolysis performance and internal temperature of an alkaline water electrolyzer according to claim 1, characterized in that, The temperature measuring line (9) is a K-type or T-type thermocouple.

6. The integrated experimental platform system for measuring the electrolytic performance and internal temperature of an alkaline water electrolyzer according to claim 1, characterized in that, The temperature measuring line (9) extends from the inlet or outlet of the experimental alkaline water electrolysis cell (1) into the internal flow field structure of the flow field.

7. The integrated experimental platform system for measuring the electrolytic performance and internal temperature of an alkaline water electrolyzer according to claim 4, characterized in that, The cover is provided with a first through hole, a second through hole, and a third through hole for introducing gas-liquid mixture, discharging gas, and extracting alkaline solution, respectively. The first through hole, the second through hole, and the third through hole are respectively provided with a first conduit (11), a second conduit (12), and a third conduit (13). One end of the first conduit (11) is inserted into the middle of the bottle, and the other end is connected to the outlet of the experimental alkaline water electrolysis cell (1); One end of the second conduit (12) is inserted into the upper part of the bottle, and the other end is used to discharge gas; One end of the third conduit (13) is inserted into the lower part of the bottle, and the other end is connected to the inlet of the alkali circulation pump (8).

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