Alkaline electrolytic cell temperature control system and method

Abstract

The invention discloses an alkaline electrolytic bath temperature control system and method, and belongs to the technical field of hydrogen production, the alkaline electrolytic bath temperature control system comprises an alkaline water electrolytic bath, an oxygen side alkaline liquor buffer tank, a hydrogen side alkaline liquor buffer tank, a total alkaline liquor buffer tank, an oxygen gas-liquid separator I, an oxygen gas-liquid separator II, an oxygen side circulating pump, a hydrogen side circulating pump, a make-up pump and a control valve; branches are arranged on the oxyhydrogen side of the electrolytic bath, and a circulating pump is added for forced flowing, so that liquid on the oxyhydrogen side flows, and electrolysis heat is timely dispersed everywhere of the system; when it is monitored that the system is overheated, a cooling medium is pumped into the alkali liquor buffer tank on the oxyhydrogen side, and the temperature of all positions of the system is reduced in cooperation with an alkali liquor circulating pump; when the alkaline electrolytic bath system is started, a high-temperature medium is guided into the heating electrolyte total buffer tank, so that the temperature of the electrolyte is increased, and heat is uniformly supplemented to all parts of the electrolytic bath system in cooperation with the circulating pump, so that the temperature of the system is uniformly and quickly increased, the rated operating temperature is reached, and stable and quick hydrogen output is realized. According to the invention, temperature monitoring is more accurate.

Description

Technical Field

[0001] This invention relates to the field of hydrogen production technology, and more specifically, to a temperature control system and method for an alkaline electrolyzer. Background Technology

[0002] Alkaline electrolyzers are currently a relatively mature device for producing hydrogen through water electrolysis. The principle behind hydrogen production is to use electrical energy to decompose water into hydrogen and oxygen at the anode and cathode, respectively. During the electrolysis process, the current flowing through the wires, electrodes, and electrolyte generates Joule heat, causing the electrolyzer's temperature to gradually rise. Excessive temperature reduces the electrolyzer's operating efficiency, accelerates the aging of electrodes and catalysts, and may cause system instability, threatening system safety. Furthermore, alkaline electrolyzers are relatively large, require a large volume of alkaline solution, and typically require 1-2 hours to start up. This is mainly because the electrolyte needs to be heated to an operating temperature of 70-80°C, and system stability, such as electrolyte circulation and gas pressure balance, must be ensured. This limits the start-up and shutdown speed, making it difficult to meet the rapid start-up and shutdown requirements of renewable energy sources. A temperature control system for alkaline electrolyzers that can provide real-time, precise, and rapid temperature control is also lacking. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a temperature control system and method for an alkaline electrolyzer. While ensuring rapid temperature control, it also ensures the overall temperature consistency of the electrolyzer, thereby making temperature monitoring more accurate. Temperature information is fed back to the temperature control system, further making temperature control more precise, which is conducive to improving the efficiency of the electrolyzer and avoiding the reduction of the lifespan of local structural components of the electrolyzer caused by uneven temperature. At the same time, it can match the temperature requirements for rapid start-up of renewable energy sources, further improving the utilization rate of renewable energy.

[0004] The objective of this invention is achieved through the following solution: An alkaline electrolyzer temperature control system includes: an alkaline water electrolyzer, an oxygen-side alkaline buffer tank, a hydrogen-side alkaline buffer tank, a total alkaline buffer tank, an oxygen gas-liquid separator I, an oxygen gas-liquid separator II, an oxygen-side circulating pump, a hydrogen-side circulating pump, a makeup water pump, a control valve I, a control valve II, and a control valve III. After the alkaline water electrolyzer is powered on, the water in the electrolyte is decomposed to produce oxygen and hydrogen, which carry water molecules and alkaline droplets into oxygen gas-liquid separator one and oxygen gas-liquid separator two, respectively. The upper parts of oxygen gas-liquid separator one and oxygen gas-liquid separator two are cooled to allow the water and alkaline liquid to flow back into the total alkaline buffer tank. When the liquid level in oxygen gas-liquid separator two falls below the lower limit, a water replenishment pump pumps water into oxygen gas-liquid separator two to the standard liquid level. The oxygen-side circulation pump and hydrogen-side circulation pump are activated, causing the electrolyte on the hydrogen side and oxygen side to circulate between the alkaline water electrolyzer and the oxygen-side alkaline buffer tank, the hydrogen-side alkaline buffer tank, the total alkaline buffer tank, and the alkaline water electrolyzer, ensuring uniform heat distribution in the system. When the alkaline water electrolysis... When the temperature of the tank continuously rises to the set temperature value one due to electrolysis, control valves two and three open, allowing cooling medium to enter the outer wall interlayer of the oxygen-side alkali buffer tank and the hydrogen-side alkali buffer tank, cooling the electrolyte. The system is then uniformly cooled to the set temperature value two through circulation, at which point electromagnetic control valves two and three close. This process is repeated when the temperature rises to the set temperature value three. When the system requires rapid startup, the oxygen-side circulation pump and the hydrogen-side circulation pump are activated, and then control valve one opens, allowing heat transfer medium to flow into the outer wall interlayer of the total alkali buffer tank, rapidly and uniformly heating the system. Once the system reaches the set temperature value three, control valve one closes, and the system can then operate at the rated temperature for water electrolysis to produce hydrogen.

[0005] Furthermore, the heat-conducting medium includes: thermally conductive silicone oil, alkylbenzene type heat-conducting oil, alkylnaphthalene type heat-conducting oil, alkylbiphenyl type heat-conducting oil, low-melting-point mixture of biphenyl and diphenyl ether, and hydrogenated terphenyl type heat-conducting oil.

[0006] Furthermore, the cooling medium includes: cooling water, ethanol, propanol, ethylene glycol, propylene glycol, and a salt solution.

[0007] Furthermore, the heating method in the heating process includes: introducing a liquid medium, introducing a hot gas, or using a solid for heating; the cooling method in the cooling process includes: introducing a liquid medium, introducing a cold gas, or using a solid for cooling.

[0008] Furthermore, the control valve includes an electromagnetically controlled valve or a pneumatically controlled valve.

[0009] Furthermore, the heating process is set in the oxygen-side alkali buffer tank and the hydrogen-side alkali buffer tank, while the cooling process is set in the total alkali buffer tank.

[0010] Furthermore, the oxygen-side circulation pump and the hydrogen-side circulation pump can be installed at any pipeline location along the path of the alkaline water electrolyzer, the oxygen-side alkaline buffer tank, the hydrogen-side alkaline buffer tank, the total alkaline buffer tank, and the alkaline water electrolyzer.

[0011] Furthermore, the water pumped into the oxygen gas-liquid separator by the water replenishment pump is deionized water.

[0012] A method for temperature control in an alkaline electrolytic cell includes the following steps: Step 1: Construct a temperature control system for the alkaline electrolyzer as described in any of the above items; Step two: Temperature control is performed using the alkaline electrolytic cell temperature control system.

[0013] Furthermore, in step two, the temperature control using the alkaline electrolytic cell temperature control system specifically includes the following sub-steps: Forced flow is achieved by adding circulating pumps to both the hydrogen and oxygen sides of the electrolyzer, ensuring the liquid flows smoothly and distributing the electrolytic heat throughout the system. When overheating is detected, cooling medium is pumped into the alkaline buffer tank on the hydrogen and oxygen side, working in conjunction with the alkaline circulating pump to lower the temperature throughout the system. When the alkaline electrolyzer system starts up, a high-temperature medium is introduced into the main buffer tank for heating the electrolyte, raising the electrolyte temperature. The circulating pump then evenly distributes the heat throughout the electrolyzer system, ensuring a uniform and rapid temperature rise to the rated operating temperature and achieving stable and rapid hydrogen output.

[0014] The beneficial effects of this invention include: The alkaline electrolytic cell temperature control system and method provided by this invention have the following advantages: (1) By setting up circulation pumps on the hydrogen and oxygen sides respectively, the present invention avoids the cross-contamination of hydrogen and oxygen while uniformly dispersing the heat of the electrolyzer system, making the temperature distribution of the system uniform, avoiding the local overheating and overcooling problems of the alkaline electrolyzer system, and improving the system life and hydrogen production efficiency.

[0015] (2) The present invention makes the temperature monitoring of the system more accurate and convenient. Since the system temperature is uniform, the redundant configuration of a large number of temperature monitoring points can be avoided, and the real-time temperature status of the system can be grasped.

[0016] (3) The present invention couples an active heating process, which greatly reduces the time for the alkaline electrolyzer to reach the rated operating temperature, thereby reducing the system startup time. When coupled with renewable energy for electrolytic hydrogen production, the startup time can be shortened and the utilization rate of renewable energy can be improved. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural block diagram of the system according to an embodiment of the present invention; In the middle, 1-alkaline water electrolyzer, 2-oxygen-side alkaline buffer tank, 3-hydrogen-side alkaline buffer tank, 4-total alkaline buffer tank, 5-oxygen gas-liquid separator one, 6-oxygen gas-liquid separator two, 7-oxygen-side circulation pump, 8-hydrogen-side circulation pump, 9-make-up water pump, 10-control valve one, 11-control valve two, 12-control valve three. Detailed Implementation

[0019] All features disclosed in all embodiments of this specification, or steps in all methods or processes implied in the disclosure, may be combined and / or extended or replaced in any way, except for mutually exclusive features and / or steps.

[0020] The specific implementation process of this invention is as follows: In this invention, the inventors believe that temperature control in alkaline electrolyzers is difficult, mainly due to the large size of the components and the large volume of electrolyte, leading to uneven temperature distribution, inaccurate temperature monitoring, and slow temperature control. Therefore, after creative consideration, a rapid temperature control system for alkaline electrolyzers is proposed, including a corresponding system and method. Specifically, to address the problem of uneven temperature distribution, circulating pumps are added to both the hydrogen and oxygen sides of the electrolyzer to force flow, allowing the liquid on the hydrogen and oxygen sides to flow rapidly and dissipate the electrolytic heat throughout the system in a timely manner. This avoids localized overheating or overcooling caused by uneven temperature distribution, which affects the accuracy of temperature monitoring and reduces system efficiency. When overheating is detected, cooling water is pumped into the alkaline buffer tank on the hydrogen and oxygen side, working in conjunction with the alkaline circulating pump to rapidly reduce the temperature throughout the system. When the alkaline electrolyzer system is started up quickly with the help of renewable energy, the high-temperature medium rapidly heats the electrolyte buffer tank, causing the electrolyte temperature to rise rapidly. The circulating pump then evenly distributes the heat to all parts of the electrolyzer system, ensuring that the system heats up uniformly and quickly to reach the rated operating temperature, thus achieving stable and rapid hydrogen output.

[0021] like Figure 1As shown, in a preferred embodiment, as a first aspect of the present invention, the present invention specifically provides a temperature control system for an alkaline electrolyzer, including an alkaline water electrolyzer 1, an oxygen-side alkaline buffer tank 2, a hydrogen-side alkaline buffer tank 3, a total alkaline buffer tank 4, an oxygen gas-liquid separator 1 5, an oxygen gas-liquid separator 2 6, an oxygen-side circulating pump 7, a hydrogen-side circulating pump 8, a water replenishment pump 9, a control valve 1 10, a control valve 2 11, and a control valve 3 12. After the alkaline water electrolysis cell 1 is powered on, it decomposes the water in the electrolyte to produce oxygen and hydrogen. These gases carry water molecules and alkaline droplets into oxygen gas-liquid separator 5 and oxygen gas-liquid separator 6, respectively. The oxygen and hydrogen in the upper part of oxygen gas-liquid separator 5 and oxygen gas-liquid separator 6 are cooled, causing the water and alkaline liquid in them to flow back into the total alkaline buffer tank 4. After the liquid level in oxygen gas-liquid separator 6 drops below the lower limit of 120 mm, the water replenishment pump 9 pumps deionized water into oxygen gas-liquid separator 6 to the standard liquid level of 200 mm. To ensure uniform temperature distribution in the electrolyzer, the oxygen-side circulation pump 7 and the hydrogen-side circulation pump 8 are activated, allowing the electrolytes on the hydrogen and oxygen sides to circulate between the alkaline water electrolyzer 1, the oxygen-side alkaline buffer tank 2, the hydrogen-side alkaline buffer tank 3, the total alkaline buffer tank 4, and the alkaline water electrolyzer 1. This ensures uniform heat distribution in the system. When the temperature of the alkaline water electrolyzer 1 continues to rise to 80 degrees Celsius due to electrolysis, electromagnetic control valves 11 and 12 are opened, allowing 15°C cooling water to enter the outer wall interlayer of the oxygen-side alkaline buffer tank 2 and the hydrogen-side alkaline buffer tank 3. This cools the electrolyte and, through circulation, uniformly cools the system to 75°C. Then, electromagnetic control valves 11 and 12 are closed. This process is repeated when the temperature rises to 80°C. When the system needs to start quickly, the oxygen-side circulation pump 7 and the hydrogen-side circulation pump 8 are turned on, and then the electromagnetic control valve 10 is turned on to introduce thermally conductive silicone oil (120°C) into the outer wall jacket of the total alkali buffer tank 4 to rapidly and uniformly heat the system. After the system reaches a uniform temperature of 70°C, valve 10 is turned off, and the system can then operate at the rated temperature to produce hydrogen through water electrolysis.

[0022] The above system embodiments have the following effects: (1) The present invention proposes an alkaline electrolyzer temperature control system, which makes the temperature distribution of the alkaline water electrolyzer more uniform and avoids life problems, system stability problems and low efficiency problems caused by local overheating or overcooling of the system.

[0023] (2) The present invention can make the temperature monitoring of the electrolytic cell system more accurate.

[0024] (3) The present invention enables the alkaline electrolytic cell to heat up to the rated temperature in a short time, which greatly speeds up the start-up speed of the alkaline electrolytic cell.

[0025] (4) This invention breaks through the problem of rapid start-up and shutdown of traditional alkaline electrolyzers for matching renewable energy, and improves the utilization rate of renewable energy.

[0026] In one embodiment of the method, a method for controlling the temperature of an alkaline electrolytic cell is provided.

[0027] (1) The alkaline electrolyzer temperature control system enables rapid heating of the alkaline water electrolyzer system, which can significantly shorten the start-up time of the electrolyzer.

[0028] (2) The invention ensures the overall temperature consistency of the electrolytic cell, thereby making temperature monitoring more accurate. Temperature information is fed back to the temperature control system, which further makes temperature control more precise, avoiding the overall efficiency decrease due to local overcooling and the lifespan of local structural components reduced due to overheating.

[0029] (3) It can match the temperature requirements for rapid start-up of renewable energy and further improve the utilization rate of renewable energy.

[0030] (4) The separate alkaline solution circulation on the hydrogen and oxygen side of the system can promote the desorption of hydrogen and oxygen bubbles, reduce energy consumption, and prevent cross-contamination of hydrogen and oxygen, thus ensuring system safety.

[0031] It should be noted that, within the scope of protection defined in the claims of this invention, the following embodiments can be combined and / or extended or replaced in any logical manner from the above specific embodiments, such as the disclosed technical principles, disclosed technical features or implicitly disclosed technical features.

[0032] Example 1 An alkaline electrolyzer temperature control system includes: an alkaline water electrolyzer 1, an oxygen-side alkaline buffer tank 2, a hydrogen-side alkaline buffer tank 3, a total alkaline buffer tank 4, an oxygen gas-liquid separator I 5, an oxygen gas-liquid separator II 6, an oxygen-side circulation pump 7, a hydrogen-side circulation pump 8, a water replenishment pump 9, a control valve I 10, a control valve II 11, and a control valve III 12. After the alkaline water electrolysis cell 1 is powered on, the water in the electrolyte is decomposed to produce oxygen and hydrogen, which carry water molecules and alkaline droplets into oxygen gas-liquid separator 5 and oxygen gas-liquid separator 6, respectively. The oxygen and hydrogen in the upper part of oxygen gas-liquid separator 5 and oxygen gas-liquid separator 6 are cooled, causing the water and alkaline liquid to flow back into the total alkaline buffer tank 4. When the liquid level in oxygen gas-liquid separator 6 falls below the lower limit, water pump 9 pumps water into oxygen gas-liquid separator 6 to the standard liquid level. The oxygen-side circulation pump 7 and the hydrogen-side circulation pump 8 are turned on, causing the electrolyte on the hydrogen and oxygen sides to circulate between the alkaline water electrolysis cell 1 and the oxygen-side alkaline buffer tank 2, the hydrogen-side alkaline buffer tank 3, the total alkaline buffer tank 4, and the alkaline water electrolysis cell 1, ensuring uniform heat distribution in the system. When the alkaline water electrolysis cell... When the temperature of the electrolyte continuously rises to the set temperature value 1 due to electrolysis, control valves 11 and 12 open, allowing cooling medium to enter the outer wall interlayer of the oxygen-side alkali buffer tank 2 and the hydrogen-side alkali buffer tank 3 to cool the electrolyte. The system is then uniformly cooled to the set temperature value 2 through circulation, at which point the electromagnetic control valves 11 and 12 are closed. This process is repeated when the temperature rises to the set temperature value 3. When the system needs to start quickly, the oxygen-side circulation pump 7 and the hydrogen-side circulation pump 8 are turned on, and then control valve 10 is opened to introduce heat transfer medium into the outer wall interlayer of the total alkali buffer tank 4, rapidly and uniformly heating the system. Once the system reaches the set temperature value 3, control valve 10 is closed, and the system can then operate at the rated temperature for water electrolysis to produce hydrogen.

[0033] Example 2 Based on Example 1, the heat-conducting medium includes: thermally conductive silicone oil, alkylbenzene type heat-conducting oil, alkylnaphthalene type heat-conducting oil, alkylbiphenyl type heat-conducting oil, low-melting mixture of biphenyl and diphenyl ether type heat-conducting oil, and hydrogenated terphenyl type heat-conducting oil.

[0034] Example 3 Based on Example 1, the cooling medium includes: cooling water, ethanol, propanol, ethylene glycol, propylene glycol, and a salt solution.

[0035] Example 4 Based on Example 1, the heating method of the heating process includes: introducing a liquid medium, introducing a hot gas, or using a solid for heating; the cooling method of the cooling process includes: introducing a liquid medium, introducing a cold gas, or using a solid for cooling.

[0036] Example 5 Based on Example 1, the control valve includes an electromagnetic control valve or a pneumatic control valve.

[0037] Example 6 Based on Example 4, the heating process is set in oxygen-side alkaline buffer tank 2 and hydrogen-side alkaline buffer tank 3, and the cooling process is set in total alkaline buffer tank 4.

[0038] Example 7 Based on Example 1, the oxygen-side circulation pump 7 and the hydrogen-side circulation pump 8 are installed at any pipeline location on the path of the alkaline water electrolyzer 1, the oxygen-side alkaline buffer tank 2, the hydrogen-side alkaline buffer tank 3, the total alkaline buffer tank 4, and the alkaline water electrolyzer 1.

[0039] Example 8 Based on Example 1, the water pumped into the oxygen gas-liquid separator 6 by the water replenishment pump 9 is deionized water.

[0040] Example 9 A method for temperature control in an alkaline electrolytic cell includes the following steps: Step 1: Construct a temperature control system for the alkaline electrolyzer as described in any of the above items; Step two: Temperature control is performed using the alkaline electrolytic cell temperature control system.

[0041] Example 10 Based on Example 9, in step two, the temperature control using the alkaline electrolytic cell temperature control system specifically includes the following sub-steps: Forced flow is achieved by adding circulating pumps to both the hydrogen and oxygen sides of the electrolyzer, ensuring the liquid flows smoothly and distributing the electrolytic heat throughout the system. When overheating is detected, cooling medium is pumped into the alkaline buffer tank on the hydrogen and oxygen side, working in conjunction with the alkaline circulating pump to lower the temperature throughout the system. When the alkaline electrolyzer system starts up, a high-temperature medium is introduced into the main buffer tank for heating the electrolyte, raising the electrolyte temperature. The circulating pump then evenly distributes the heat throughout the electrolyzer system, ensuring a uniform and rapid temperature rise to the rated operating temperature and achieving stable and rapid hydrogen output.

[0042] The specific embodiments of the present invention are not limited to the methods described above. The above descriptions are merely preferred embodiments and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, adjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the principles and concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A temperature control system for an alkaline electrolytic cell, characterized in that, include: Alkaline water electrolyzer (1), oxygen-side alkaline buffer tank (2), hydrogen-side alkaline buffer tank (3), total alkaline buffer tank (4), oxygen gas-liquid separator I (5), oxygen gas-liquid separator II (6), oxygen-side circulating pump (7), hydrogen-side circulating pump (8), water replenishment pump (9), control valve I (10), control valve II (11) and control valve III (12); After the alkaline water electrolyzer (1) is powered on, it decomposes the water in the electrolyte to produce oxygen and hydrogen, which carry water molecules and alkaline droplets into oxygen gas-liquid separator one (5) and oxygen gas-liquid separator two (6), respectively. The oxygen gas-liquid separator one (5) and oxygen gas-liquid separator two (6) are cooled at the top to allow the water and alkaline liquid in them to flow back into the total alkaline buffer tank (4). When the liquid volume in oxygen gas-liquid separator two (6) is lower than the lower limit, the water replenishment pump (9) pumps water into oxygen gas-liquid separator two (6) to the standard liquid level. The oxygen-side circulation pump (7) and the hydrogen-side circulation pump (8) are turned on to make the electrolyte on the hydrogen side and the oxygen side circulate between the alkaline water electrolyzer (1) and the oxygen-side alkaline buffer tank (2), the hydrogen-side alkaline buffer tank (3), the total alkaline buffer tank (4) and the alkaline water electrolyzer (1), so that the heat distribution of the system is uniform. When the alkaline When the temperature of the water electrolyzer (1) rises continuously to the set temperature value one due to electrolysis, control valve two (11) and control valve three (12) are opened, and the cooling medium enters the outer wall interlayer of the oxygen-side alkaline buffer tank (2) and the hydrogen-side alkaline buffer tank (3) to cool the electrolyte. When the system is uniformly cooled to the set temperature value two due to circulation, electromagnetic control valve two (11) and electromagnetic control valve three (12) are closed. This process is repeated when the temperature rises to the set temperature value three. When the system needs to start up quickly, the oxygen-side circulation pump (7) and the hydrogen-side circulation pump (8) are opened, and then control valve one (10) is opened to introduce the heat transfer medium into the outer wall interlayer of the total alkaline buffer tank (4) to rapidly and uniformly heat the system. When the system reaches the set temperature value three, control valve one (10) is closed, and the system can then operate at the rated temperature to electrolyze water to produce hydrogen.

2. The alkaline electrolytic cell temperature control system according to claim 1, characterized in that, The heat-conducting medium includes: thermally conductive silicone oil, alkylbenzene type heat-conducting oil, alkylnaphthalene type heat-conducting oil, alkylbiphenyl type heat-conducting oil, low-melting mixture of biphenyl and diphenyl ether type heat-conducting oil, and hydrogenated terphenyl type heat-conducting oil.

3. The alkaline electrolytic cell temperature control system according to claim 1, characterized in that, The cooling medium includes: cooling water, ethanol, propanol, ethylene glycol, propylene glycol, and a salt solution.

4. The alkaline electrolytic cell temperature control system according to claim 1, characterized in that, The heating methods in the heating process include: introducing a liquid medium, introducing a hot gas, or using a solid for heating; the cooling methods in the cooling process include: introducing a liquid medium, introducing a cold gas, or using a solid for cooling.

5. The alkaline electrolytic cell temperature control system according to claim 1, characterized in that, The control valve includes an electromagnetic control valve or a pneumatic control valve.

6. The alkaline electrolytic cell temperature control system according to claim 4, characterized in that, The heating process is set in the oxygen-side alkaline buffer tank (2) and the hydrogen-side alkaline buffer tank (3), and the cooling process is set in the total alkaline buffer tank (4).

7. The alkaline electrolytic cell temperature control system according to claim 1, characterized in that, The oxygen-side circulation pump (7) and the hydrogen-side circulation pump (8) are installed at any pipeline location on the path of the alkaline water electrolyzer (1), the oxygen-side alkaline buffer tank (2), the hydrogen-side alkaline buffer tank (3), the total alkaline buffer tank (4), and the alkaline water electrolyzer (1).

8. The alkaline electrolytic cell temperature control system according to claim 1, characterized in that, The water pump (9) pumps deionized water into the oxygen gas-liquid separator (6).

9. A method for temperature control in an alkaline electrolytic cell, characterized in that, Includes the following steps: Step 1: Construct the alkaline electrolytic cell temperature control system according to any one of claims 1 to 8; Step two: Temperature control is performed using the alkaline electrolytic cell temperature control system.

10. The method for controlling the temperature of an alkaline electrolytic cell according to claim 9, characterized in that, In step two, the temperature control using the alkaline electrolytic cell temperature control system specifically includes the following sub-steps: Forced flow is achieved by adding circulating pumps to both the hydrogen and oxygen sides of the electrolyzer, ensuring the liquid flows smoothly and distributing the electrolytic heat throughout the system. When overheating is detected, cooling medium is pumped into the alkaline buffer tank on the hydrogen and oxygen side, working in conjunction with the alkaline circulating pump to lower the temperature throughout the system. When the alkaline electrolyzer system starts up, a high-temperature medium is introduced into the main buffer tank for heating the electrolyte, raising the electrolyte temperature. The circulating pump then evenly distributes the heat throughout the electrolyzer system, ensuring a uniform and rapid temperature rise to the rated operating temperature and achieving stable and rapid hydrogen output.

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