Hydrogen production system and its control method

Abstract

This application discloses a hydrogen production system and its control method. The hydrogen production system includes a liquid supply module, a hydrogen production module, a hydrogen processing module, and a controller. The liquid supply module includes a storage tank, an inlet channel, a supply channel, a temperature control component, and a monitoring mechanism. The inlet channel is connected to the storage tank, and the first end of the supply channel is connected to the storage tank. The temperature control component and the monitoring mechanism are located in the supply channel, and the monitoring mechanism is used to monitor the temperature of the electrolyte in the supply channel. The hydrogen production module includes an electrolysis component, a reflux channel, and a hydrogen outlet channel. The electrolysis component is connected to the second end of the supply channel, the reflux channel connects the electrolysis component and the storage tank, and the first end of the hydrogen outlet channel is connected to the electrolysis component. The hydrogen processing module is located in the hydrogen outlet channel and is used to separate the liquid and gas in the hydrogen outlet channel. This application solves the problem of low hydrogen production efficiency in existing hydrogen production systems.

Description

Technical Field

[0001] This application relates to the field of hydrogen production technology, and more specifically, to a hydrogen production system and its control method. Background Technology

[0002] Existing hydrogen production technologies include solar photocatalytic hydrogen production, natural gas steam reforming hydrogen production, biomass hydrogen production, and water electrolysis hydrogen production. Although water electrolysis hydrogen production is more expensive, its recyclable nature has made it a hot research topic in hydrogen production technology.

[0003] Existing hydrogen production devices, such as the hydrogen-oxygen fuel cell energy regeneration cycle device disclosed in Chinese patent CN112993362A, achieve the recycling of hydrogen and oxygen. However, existing hydrogen production systems suffer from low hydrogen production efficiency due to the influence of the electrolyte. Summary of the Invention

[0004] The main objective of this application is to provide a hydrogen production system and its control method, so as to at least solve the problem of low hydrogen production efficiency in existing hydrogen production systems.

[0005] According to one aspect of this application, a hydrogen production system is provided, comprising:

[0006] The liquid supply module includes a storage tank, an inlet channel, a supply channel, a temperature control component, and a monitoring mechanism. The inlet channel is connected to the storage tank, and the first end of the supply channel is connected to the storage tank. The temperature control component is disposed in the supply channel, and the monitoring mechanism is disposed in the supply channel. The monitoring mechanism is used to monitor the temperature of the electrolyte in the supply channel at least.

[0007] A hydrogen production module, comprising an electrolysis component, a reflux channel, and a hydrogen outlet channel, wherein the electrolysis component is connected to the second end of the liquid supply channel, the reflux channel is connected between the electrolysis component and the liquid storage tank, and the first end of the hydrogen outlet channel is connected to the electrolysis component;

[0008] A hydrogen processing module is disposed in the hydrogen outlet channel, and the hydrogen processing module is used at least to separate liquid and gas in the hydrogen outlet channel;

[0009] The controller is electrically connected to both the monitoring mechanism and the temperature control component. The controller controls the electrolysis unit to start or stop working based on the signal transmitted by the monitoring mechanism, and controls the temperature control component to change the temperature of the electrolyte in the supply channel.

[0010] Furthermore, the monitoring mechanism includes a first temperature monitoring element, which is disposed in the liquid supply channel and electrically connected to the controller. The first temperature monitoring element is used to monitor the temperature of the electrolyte in the liquid supply channel.

[0011] The temperature control component includes a heat exchanger, which is disposed in the liquid supply channel and is electrically connected to the controller.

[0012] The controller controls the electrolysis unit to start or stop working based on the signal transmitted by the first temperature monitoring element, and controls the heat exchanger to change the temperature of the electrolyte in the supply channel.

[0013] Furthermore, the liquid supply module also includes a filter, which is disposed in the liquid supply channel and has a first vent valve, which is electrically connected to the controller;

[0014] The monitoring mechanism further includes a differential pressure monitoring component, which is disposed in the liquid supply channel and located between the filter and the storage tank, and between the filter and the electrolysis unit. The differential pressure monitoring component is electrically connected to the controller, and is used at least to monitor the pressure difference of the electrolyte in the liquid supply channel at both ends of the filter.

[0015] A first control valve group is disposed in the liquid supply channel and located between the filter and the liquid storage tank and / or the filter and the electrolysis component. The first control valve group is electrically connected to the controller.

[0016] The controller controls the opening or closing of the first control valve group and the first exhaust valve based on the signal transmitted by the differential pressure monitoring component.

[0017] Furthermore, the liquid supply module also includes a pump body, which is disposed in the liquid supply channel and is electrically connected to the controller;

[0018] The monitoring mechanism further includes a first flow monitoring element, which is disposed in the liquid supply channel and located between the pump body and the electrolysis component. The first flow monitoring element is electrically connected to the controller.

[0019] The controller controls the pump body to change the flow rate of the electrolyte in the supply channel based on the signal transmitted by the first flow monitoring element.

[0020] Furthermore, the hydrogen processing module includes a gas-liquid separator and a transmission assembly. The gas-liquid separator is provided with an inlet pipe and an outlet pipe. The gas-liquid separator is located in the hydrogen outlet channel. The transmission assembly is provided with a hydrogen supply branch and a monitoring branch. Both the hydrogen supply branch and the monitoring branch are connected to the outlet pipe. A first control valve is provided on the hydrogen supply branch, and a second control valve is provided on the monitoring branch.

[0021] The monitoring mechanism further includes a humidity monitoring element, which is disposed in the monitoring branch and is used to monitor the hydrogen humidity in the monitoring branch. Along the gas transmission direction in the monitoring branch, the distance from the humidity monitoring element to the gas-liquid separator is less than the distance from the second control valve to the gas-liquid separator.

[0022] The electrolysis unit, the gas-liquid separator, and the hydrogen supply branch form the hydrogen outlet channel. The first control valve, the second control valve, and the humidity monitoring element are all electrically connected to the controller. The controller controls the opening or closing of the first control valve and the second control valve according to the signal transmitted by the humidity monitoring element.

[0023] Furthermore, the hydrogen processing module includes:

[0024] A gas-liquid separator, comprising at least two sets, each set of gas-liquid separators including an inlet pipe, an outlet pipe and a cavity, wherein the inlet pipe and outlet pipe of each gas-liquid separator are interconnected with the cavity, and the outlet pipe of at least one set of gas-liquid separators is interconnected with the inlet pipe of at least another set of gas-liquid separators to form a liquefaction channel;

[0025] A liquefaction component disposed in the liquefaction channel, the liquefaction component being used to convert at least a portion of the gas within the liquefaction channel into a liquid.

[0026] Furthermore, the hydrogen processing module includes a gas-liquid separator, which is provided with an outlet pipe and is located in the hydrogen outlet channel;

[0027] The hydrogen processing module also includes a hydrogen discharge channel, which is connected to the gas outlet pipe. A third control valve is installed on the gas outlet pipe and is electrically connected to the controller.

[0028] The monitoring mechanism further includes a first pressure monitoring element, which is disposed in the gas outlet pipe and electrically connected to the controller. The first pressure monitoring element is used at least to monitor the pressure of hydrogen in the hydrogen exhaust channel.

[0029] The controller controls the opening or closing of the third control valve based on the signal transmitted by the first pressure monitoring element.

[0030] Furthermore, the liquid inlet channel includes a first pipe, a second pipe, and a third pipe. The first end of the first pipe is connected to the third pipe, and the second end of the first pipe is used to connect to an external water supply device. The first end of the second pipe is connected to the third pipe, and the third pipe is connected to the liquid storage tank. A second control valve group is provided between the first pipe and the second pipe, and the second control valve group is electrically connected to the controller.

[0031] The monitoring mechanism also includes a water quality monitoring element, which is installed in the first pipeline and electrically connected to the controller. The water quality monitoring element is used to monitor whether the water quality in the first pipeline is up to standard.

[0032] The controller controls the second control valve group to close or open the second pipeline based on the signal transmitted by the water quality monitoring element, and controls the second control valve group to close or open the third pipeline.

[0033] Furthermore, a receiving cavity is provided inside the liquid storage tank, and an elongated channel is provided on the liquid storage tank along the height direction, the elongated channel being interconnected with the receiving cavity;

[0034] The liquid supply module further includes a heating component, which is at least partially located within the accommodating cavity and on one side of the elongated channel near the bottom wall of the accommodating cavity. The heating component is electrically connected to the controller.

[0035] The monitoring mechanism further includes a first liquid level monitoring component, which is disposed in the elongated channel. The first liquid level monitoring component is used to monitor the liquid level height in the accommodating cavity at least. The first liquid level monitoring component is electrically connected to the controller.

[0036] The controller controls the heating assembly to heat the liquid in the accommodating cavity based on the signal transmitted by the first liquid level monitoring component.

[0037] Furthermore, the liquid supply channel includes a main channel and multiple branch channels, and each branch channel is connected to the main channel;

[0038] The electrolysis unit, the hydrogen outlet channel, and the reflux channel each include multiple components. Each electrolysis unit is connected to each branch channel in a one-to-one correspondence. Each hydrogen outlet channel is connected to each electrolysis unit in a one-to-one correspondence. The first end of each reflux channel is connected to each electrolysis unit in a one-to-one correspondence. The second end of each reflux channel is connected to the liquid storage tank. Each electrolysis unit operates independently.

[0039] On the other hand, this application also provides a control method for a hydrogen production system, wherein the control method for the hydrogen production system is executed using the aforementioned hydrogen production system, and the control method for the hydrogen production system includes:

[0040] When the temperature of the electrolyte in the supply channel exceeds the first temperature range, the electrolysis component is controlled to stop working, and the temperature control component is controlled to change the temperature of the electrolyte in the supply channel until the temperature of the electrolyte in the supply channel is maintained within the first temperature range, at which point the electrolysis component is controlled to start working.

[0041] Furthermore, the steps of controlling the electrolysis component to stop working and controlling the temperature control component to change the temperature of the electrolyte in the supply channel when the temperature of the electrolyte in the supply channel exceeds the first temperature range include:

[0042] When the temperature of the electrolyte in the supply channel is lower than the minimum value of the first temperature range, the electrolysis component is controlled to stop working, and the temperature control component is controlled to heat the electrolyte in the supply channel.

[0043] When the temperature of the electrolyte in the supply channel is higher than the maximum value of the first temperature range, the electrolysis component is controlled to stop working, and the temperature control component is controlled to cool the electrolyte in the supply channel.

[0044] Furthermore, the control method for the hydrogen production system also includes:

[0045] When the pressure difference of the electrolyte in the supply channels at both ends of the filter is higher than a first predetermined value and lower than a second predetermined value, the first vent valve is opened; when the pressure difference of the electrolyte in the supply channels at both ends of the filter is lower than or equal to the first predetermined value, the first vent valve is closed; when the pressure difference of the electrolyte in the supply channels at both ends of the filter is higher than the second predetermined value, the first control valve group is closed, and the first vent valve on the filter is opened; when the pressure difference of the electrolyte in the supply channels at both ends of the filter is lower than or equal to the second predetermined value, the first control valve group is opened; and / or,

[0046] When the flow rate of the electrolyte in the supply channel exceeds the maximum value of the predetermined flow range, the pump body is controlled to reduce the flow rate of the electrolyte in the supply channel until the flow rate reaches the predetermined flow range; when the flow rate of the electrolyte in the supply channel is less than or equal to the minimum value of the predetermined flow range, the pump body is controlled to increase the flow rate of the electrolyte in the supply channel until the flow rate reaches the predetermined flow range; and / or,

[0047] When the humidity of hydrogen in the monitoring branch is less than or equal to the predetermined humidity, the first control valve is opened and the second control valve is closed; when the humidity of hydrogen in the monitoring branch is greater than the predetermined humidity, the first control valve is closed and the second control valve is opened; and / or,

[0048] When the hydrogen pressure in the outlet pipe is lower than or equal to the predetermined pressure value, the third control valve is closed; when the hydrogen pressure in the outlet pipe is higher than the predetermined pressure value, the third control valve is opened; and / or,

[0049] When the water quality in the first pipeline is substandard, the second control valve group is controlled to open the second pipeline and close the third pipeline; when the water quality in the first pipeline is acceptable, the second control valve group is controlled to close the second pipeline and open the third pipeline; and / or,

[0050] When the liquid level in the accommodating cavity is higher than the height of the heating element, the heating element is controlled to heat; when the liquid level in the accommodating cavity is lower than or equal to the height of the heating element, the heating element is controlled to stop heating.

[0051] Compared to existing technologies, in this application, when the temperature of the electrolyte in the supply channel is too low, the temperature control component heats the electrolyte in the supply channel to bring it to the optimal electrolysis temperature; conversely, when the temperature of the electrolyte in the supply channel is too high, the temperature control component cools the electrolyte in the supply channel to the optimal electrolysis temperature. Furthermore, while controlling the temperature control component to heat or cool the electrolyte in the supply channel, the controller also needs to control the electrolysis unit to stop operating. After the electrolysis unit stops operating, the electrolyte entering the electrolysis unit through the supply channel will not undergo electrolysis, and the electrolyte can flow back to the storage tank through the return channel. Only when the electrolyte in the supply channel reaches the optimal electrolysis temperature does the controller control the electrolysis unit to start operating, allowing the electrolyte to electrolyze at the optimal electrolysis temperature, thereby improving the hydrogen production efficiency of the hydrogen production system. Attached Figure Description

[0052] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0053] Figure 1 This is a connection diagram of the hydrogen production system disclosed in this application;

[0054] Figure 2 This is a schematic diagram of the hydrogen production system disclosed in this application from a first-person perspective.

[0055] Figure 3 This is a schematic diagram of the hydrogen production system disclosed in this application from a second-view perspective.

[0056] Figure 4 This is a schematic diagram of the hydrogen processing module disclosed in this application;

[0057] Figure 5 This is a schematic diagram of the connection structure of the first gas-liquid separator and the second gas-liquid separator disclosed in this application.

[0058] Figure 6 This is a partial structural diagram of the liquid supply module disclosed in this application (excluding the oxygen exhaust channel and the liquid supply channel).

[0059] Figure 7 This is a partial structural diagram of the liquid supply module disclosed in this application (with the branch channel and oxygen exhaust channel removed).

[0060] Figure 8 This is a logical schematic diagram of the control method for the hydrogen production system disclosed in this application.

[0061] The above figures include the following reference numerals:

[0062] 11. Storage tank; 12. Inlet channel; 13. Supply channel; 14. Temperature control component; 15. Pump body; 16. Filter; 17. Oxygen exhaust channel; 18. Heating component; 19. Slender channel; 21. Electrolysis component; 22. Reflux channel; 23. Hydrogen outlet channel; 24. Hydrogen exhaust channel; 30. Hydrogen processing module; 31. Gas-liquid separator; 32. Transmission component; 33. Liquefaction component; 41. First temperature monitoring element; 42. Differential pressure monitoring component; 43. First flow rate monitoring element; 44. Humidity monitoring element; 45. First pressure... Monitoring elements; 46. Water quality monitoring element; 47. First liquid level monitoring element; 48. First conductivity monitoring element; 49. Second temperature monitoring element; 50. Sixth pressure monitoring element; 51. Seventh pressure monitoring element; 52. Second flow monitoring element; 53. Third flow monitoring element; 54. Second liquid level monitoring element; 55. Eighth pressure monitoring element; 61. First control valve; 62. Second control valve; 63. Third control valve; 64. Fourth control valve; 65. Fifth control valve; 66. Sixth control valve; 67. Seventh control valve; 68. 69. Eighth control valve; 70. Ninth control valve; 71. Tenth control valve; 72. Second exhaust valve; 73. Explosion valve; 74. First regulating valve; 121. Second regulating valve; 122. First pipeline; 123. Third pipeline; 131. Main stream channel; 132. Tributary channel; 141. Heat exchanger; 161. First exhaust valve; 171. First oxygen exhaust pipeline; 172. Second oxygen exhaust pipeline; 191. Fourth pipeline; 192. Fifth pipeline; 301. First gas-liquid separator; 302. Second gas-liquid separator; 32. 1. Monitoring branch; 322. Hydrogen supply branch; 331. Condenser; 311. Gas outlet pipe; 312. Gas inlet pipe; 313. Liquid discharge pipe; 421. Second pressure monitoring element; 422. Third pressure monitoring element; 461. Second conductivity monitoring element; 471. Fourth pressure monitoring element; 472. Fifth pressure monitoring element; 473. Calculation element; 541. First level gauge; 542. Second level gauge; 543. Third level gauge; 601. First control valve group; 602. Second control valve group; 603. Third control valve group. Detailed Implementation

[0063] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0066] See Figures 1 to 7 As shown, according to an embodiment of this application, a hydrogen production system is provided, including a liquid supply module, a hydrogen production module, a hydrogen processing module 30, and a controller.

[0067] The liquid supply module includes a storage tank 11, an inlet channel 12, a supply channel 13, a temperature control component 14, and a monitoring mechanism. The inlet channel 12 is connected to the storage tank 11, and the first end of the supply channel 13 is connected to the storage tank 11. The temperature control component 14 is located in the supply channel 13, and the monitoring mechanism is located in the supply channel 13, at least for monitoring the temperature of the electrolyte within the supply channel 13. The hydrogen production module includes an electrolysis component 21, a reflux channel 22, and a hydrogen outlet channel 23. The electrolysis component 21 is connected to the second end of the supply channel 13, the reflux channel 22 connects the electrolysis component 21 and the storage tank 11, and the first end of the hydrogen outlet channel 23 is connected to the electrolysis component 21. A hydrogen processing module 30 is located in the hydrogen outlet channel 23, and the hydrogen processing module 30 is at least used to separate the liquid and gas within the hydrogen outlet channel 23. The controller is electrically connected to both the monitoring mechanism and the temperature control component 14. The controller controls the electrolysis unit 21 to start or stop working according to the signal transmitted by the monitoring mechanism, and controls the temperature control component 14 to change the temperature of the electrolyte in the supply channel 13.

[0068] In the hydrogen production process, water enters the storage tank 11 through the inlet channel 12 and is prepared as an electrolyte within the storage tank 11. The electrolyte is then supplied to the electrolysis unit 21 through the supply channel 13, where it is electrolyzed into hydrogen and oxygen. The hydrogen produced by electrolysis is purified by the hydrogen processing module 30 and then supplied to external equipment through the hydrogen outlet channel 23. The electrolyte and oxygen produced by electrolysis flow back into the storage tank 11 through the return channel 22. It is understandable that when the temperature of the electrolyte entering the electrolysis unit 21 is too low or too high, the electrolysis effect of the electrolyte will be poor, thereby reducing the hydrogen production efficiency of the hydrogen production system.

[0069] Therefore, to solve the above problems, the hydrogen production system in this embodiment includes a controller, and a temperature control component 14 and a monitoring mechanism are installed on the liquid supply channel 13. That is, when the temperature of the electrolyte in the liquid supply channel 13 is too low, the temperature control component 14 heats the electrolyte in the liquid supply channel 13, thereby bringing the electrolyte temperature to the optimal electrolysis temperature; conversely, when the temperature of the electrolyte in the liquid supply channel 13 is too high, the temperature control component 14 cools the electrolyte in the liquid supply channel 13, similarly cooling the electrolyte temperature to the optimal electrolysis temperature. Furthermore, when the controller controls the temperature control component 14 to heat or cool the electrolyte in the liquid supply channel 13, it also needs to control the electrolysis unit 21 to stop working. After the electrolysis unit 21 stops working, the electrolyte entering the electrolysis unit 21 through the liquid supply channel 13 will not undergo electrolysis, and the electrolyte can flow back to the storage tank 11 through the return channel 22. When the electrolyte in the supply channel 13 reaches the optimal electrolysis temperature, the controller then controls the electrolysis component 21 to start working, and the electrolyte is electrolyzed at the optimal electrolysis temperature, thereby improving the hydrogen production efficiency of the hydrogen production system.

[0070] Furthermore, the monitoring mechanism includes a first temperature monitoring element 41, which is disposed in the liquid supply channel 13 and electrically connected to the controller. The first temperature monitoring element 41 is used to monitor the temperature of the electrolyte in the liquid supply channel 13. The temperature control assembly 14 includes a heat exchanger 141, which is disposed in the liquid supply channel 13 and electrically connected to the controller. The controller controls the electrolysis unit 21 to start or stop working based on the signal transmitted by the first temperature monitoring element 41, and controls the heat exchanger 141 to change the temperature of the electrolyte in the liquid supply channel 13.

[0071] Specifically, when the temperature of the electrolyte in the supply channel 13 is too low, the controller controls the heat exchanger 141 to exchange heat with the electrolyte in the supply channel 13, thereby increasing the electrolyte temperature. Conversely, when the temperature of the electrolyte in the supply channel 13 is too high, the controller controls the heat exchanger 141 to exchange heat with the electrolyte in the supply channel 13, thereby decreasing the electrolyte temperature. It can be understood that when the temperature of the heat exchanger 141 is set to a predetermined value, the temperature of the electrolyte in the supply channel 13 will always be maintained at a specific temperature after heat exchange through the heat exchanger 141 for a certain period of time. Therefore, the design of the heat exchanger 141 allows the electrolyte to reach the optimal electrolysis temperature after heat exchange, thereby improving the electrolysis efficiency of the hydrogen production system. In some embodiments, the heat exchanger 141 includes a plate heat exchanger with a hot water inlet and a hot water outlet. When the temperature of the flowing water in contact with the plate heat exchanger through the hot water inlet and outlet remains constant, the water in the supply channel 13 will also be maintained at a specific temperature under the action of the plate heat exchanger. Furthermore, by calculating and setting the temperature of the flowing water based on parameters such as the heat transfer coefficient, heat exchange area, and logarithmic mean temperature difference of the plate heat exchanger, the electrolyte in the supply pipeline can reach the optimal electrolysis temperature.

[0072] When the temperature control component 14 is a heat exchanger 141, the heat exchanger 141 can be kept in working condition at all times. The temperature control component 14 can also be a thermoelectric module, or a structure that integrates heating and cooling elements. In some embodiments, the first temperature monitoring element 41 is located between the liquid storage tank 11 and the temperature control element, or it can be located between the temperature control element and the electrolysis component 21. Since the electrolyte will flow back into the liquid storage tank when the electrolyte temperature does not reach the set value, the two design methods will not cause any difference in temperature monitoring or temperature heat exchange.

[0073] It is understandable that when there are many impurities in the electrolyte in the supply channel 13, the electrolyte with more impurities will enter the electrolysis component 21 for electrolysis, which will also lead to a decrease in the amount of hydrogen generated. On the other hand, when a lot of impurities are deposited in the electrolysis component 21, it may cause damage to the electrolysis component 21. In order to solve the above problems, the supply module of this embodiment also includes a filter 16, which is disposed in the supply channel 13. The filter 16 is provided with a first exhaust valve 161, which is electrically connected to the controller. The monitoring mechanism also includes a differential pressure monitoring component 42, which is disposed in the supply channel 13 and located between the filter 16 and the storage tank 11, and between the filter 16 and the electrolysis component 21. The differential pressure monitoring component 42 is electrically connected to the controller and is used at least to monitor the pressure difference of the electrolyte in the supply channel 13 at both ends of the filter 16. The first control valve assembly 601 is disposed in the liquid supply channel 13 and located between the filter 16 and the liquid storage tank 11 and / or between the filter 16 and the electrolysis unit 21. The first control valve assembly 601 is electrically connected to the controller. The controller controls the opening or closing of the first control valve assembly 601 and the first exhaust valve 161 based on the signal transmitted by the differential pressure monitoring component 42.

[0074] In other words, the filter 16 can filter impurities in the electrolyte within the supply channel 13, thereby preventing excessive impurity content in the electrolyte entering the electrolysis unit 21. Furthermore, the presence of gas within the filter 16 can cause significant variations in the electrolyte flow rate after passing through it. Therefore, in this embodiment, the differential pressure monitoring component 42 is designed such that when it detects a certain pressure difference within the supply channels 13 at both ends of the filter 16, the controller opens the first exhaust valve 161 to release the gas from the filter 16, preventing excessive gas buildup and resulting in excessive gas resistance. After the gas is released through the first exhaust valve 161, the pressure difference in the electrolyte within the supply channels 13 at both ends of the filter 16 decreases, at which point the controller closes the first exhaust valve 161 to prevent electrolyte leakage from the first exhaust valve 161. Furthermore, since filter 16 filters impurities in the electrolyte, excessive accumulation of impurities within filter 16 can clog it, preventing proper filtration and causing a sharp increase in the pressure difference between the electrolyte in the supply channels 13 at both ends of filter 16, thus affecting the hydrogen production efficiency of the hydrogen production system. Therefore, in this embodiment, when the differential pressure monitoring component 42 detects a large pressure difference in the supply channels 13 at both ends of filter 16, the controller controls the first control valve group 601 to close. This prevents the electrolyte in the supply channels 13 from flowing into the electrolysis unit 21, and the controller controls the first vent valve 161 to open to clean the impurities in filter 16. After cleaning the impurities in filter 16, the controller then controls the first vent valve 161 to close and the first control valve group 601 to open.

[0075] In one specific embodiment, the differential pressure monitoring assembly 42 includes a second pressure monitoring element 421 and a third pressure monitoring element 422. The second pressure monitoring element 421 is located between the storage tank 11 and the filter 16, and the third pressure monitoring element 422 is located between the filter 16 and the electrolysis unit 21. The first control valve group 601 includes a fourth control valve 64 and a fifth control valve 65. The fourth control valve 64 is located between the storage tank 11 and the filter 16, and the fifth control valve 65 is located between the filter 16 and the electrolysis unit 21. When both the fourth control valve 64 and the fifth control valve 65 are closed, the electrolyte will not enter the electrolysis unit 21 through the supply channel 13, nor will it enter the filter 16, making it difficult to clean impurities from the filter 16. In some embodiments, the first control valve group 601 may also include only the fourth control valve 64.

[0076] Furthermore, the liquid supply module also includes a pump body 15, which is disposed in the liquid supply channel 13 and electrically connected to the controller. The monitoring mechanism also includes a first flow monitoring element 43, which is disposed in the liquid supply channel 13 and located between the pump body 15 and the electrolysis component 21, and electrically connected to the controller. The controller controls the pump body 15 to change the flow rate of the electrolyte in the liquid supply channel 13 based on the signal transmitted by the first flow monitoring element 43.

[0077] Specifically, when the electrolyte flow rate in the supply channel 13 is too low, the number of anions and cations in the electrolysis component 21 will be insufficient, thereby reducing the hydrogen production efficiency of the hydrogen production system. Conversely, when the electrolyte flow rate in the supply channel 13 is too high, the amount of electrolyte used by the hydrogen production system per unit time will increase, thus increasing the cost of electrolyte usage. In this embodiment, through the cooperation of the first flow monitoring element 43 and the pump body 15, the electrolyte flow rate in the supply channel 13 can be controlled within a certain range. That is, when the first flow monitoring element 43 detects that the electrolyte flow rate in the supply channel 13 is too high, the controller controls the pump body 15 to reduce the electrolyte flow rate in the supply channel 13; and when the first flow monitoring element 43 detects that the electrolyte flow rate in the supply channel 13 is too low, the controller controls the pump body 15 to increase the electrolyte flow rate in the supply channel 13.

[0078] In one specific embodiment, along the electrolyte flow direction of the supply channel 13, a heat exchanger 141, a fourth control valve 64, a pump body 15, a second pressure monitoring element 421, a filter 16, a fourth control valve 64, a third pressure monitoring element 422, a first temperature monitoring element 41, and a first flow monitoring element 43 are sequentially arranged on the supply channel 13.

[0079] In addition, a first conductivity monitoring element 48 is provided on the liquid supply channel 13, and the first conductivity monitoring element 48 is located between the temperature control component 14 and the electrolysis component 21. The first conductivity monitoring element 48 is used to monitor the conductivity of the electrolyte in the liquid supply channel 13. The first conductivity monitoring element 48 is electrically connected to the controller, and the controller controls the first control valve group 601 to open or close according to the signal of the first conductivity monitoring element 48.

[0080] In one specific embodiment, the first conductivity monitoring element 48 is located between the heat exchanger 141 and the pump body 15. When the first conductivity monitoring element 48 detects that the conductivity of the electrolyte in the supply channel 13 is too low, the controller controls the fourth control valve 64 to close. Simultaneously, a compound prepared with water to form the electrolyte needs to be added to the storage tank 11 to increase the conductivity of the electrolyte. When the first conductivity monitoring element 48 detects that the conductivity of the electrolyte in the supply channel 13 is greater than a predetermined conductivity, the controller controls the fourth control valve 64 to open, allowing the electrolyte to enter the electrolysis component 21 through the supply channel 13. The compound used to prepare the electrolyte can be one or more of potassium hydroxide, sodium hydroxide, sodium carbonate, potassium dihydrogen phosphate, etc.

[0081] In some embodiments, the liquid supply channel 13 is further provided with a second exhaust valve 71 and a sixth control valve 66. The second exhaust valve 71 and the sixth control valve 66 are both located between the temperature control component 14 and the liquid storage tank 11. The sixth control valve 66 is electrically connected to the controller.

[0082] Specifically, when the hydrogen production system stops working, the controller closes the sixth control valve 66 to prevent electrolyte from entering the temperature control component 14, pump body 15, filter 16, and electrolysis component 21 through the supply channel 13, thus avoiding any impact on these components. When the hydrogen production system is working, the controller opens the sixth control valve 66. Since gas may be present in the electrolyte, a second vent valve 71 is installed on the supply channel 13. When gas in the electrolyte passes through the second vent valve 71, the gas is discharged. In this embodiment, the second vent valve 71 is an automatic vent valve, and the first vent valve 161 is an electric vent valve.

[0083] In some embodiments, the monitoring mechanism further includes a second temperature monitoring element 49, which is disposed in the liquid storage tank 11 and electrically connected to the controller. The second temperature monitoring element 49 is used to monitor the temperature of the liquid in the liquid storage tank 11, and the controller controls the sixth control valve 66 to open or close according to the signal from the second temperature monitoring element 49.

[0084] Specifically, when the temperature of the liquid in the storage tank 11 is lower than the predetermined heating temperature, the controller controls the sixth control valve 66 to close; when the temperature of the liquid in the storage tank 11 is greater than or equal to the predetermined heating temperature, the controller controls the sixth control valve 66 to open, so that the electrolyte can enter the supply channel 13. The predetermined heating temperature can be 50℃, 51℃, 52℃, 53℃, 54℃, or 55℃.

[0085] Furthermore, the hydrogen processing module 30 includes a gas-liquid separator 31 and a transmission assembly 32. The gas-liquid separator 31 is provided with an inlet pipe 312 and an outlet pipe 311, and is located in the hydrogen outlet channel 23. The transmission assembly 32 is provided with a hydrogen supply branch 322 and a monitoring branch 321, both of which are connected to the outlet pipe 311. A first control valve 61 is provided on the hydrogen supply branch 322, and a second control valve 62 is provided on the monitoring branch 321. The monitoring mechanism also includes a humidity monitoring element 44, which is located in the monitoring branch 321 and is used to monitor the hydrogen humidity within the monitoring branch 321. Along the gas transmission direction in the monitoring branch 321, the distance from the humidity monitoring element 44 to the gas-liquid separator 31 is less than the distance from the second control valve 62 to the gas-liquid separator 31. The channels in the electrolysis component 21, the gas-liquid separator 31 and the hydrogen supply branch 322 form the hydrogen outlet channel 23. The first control valve 61, the second control valve 62 and the humidity monitoring element 44 are all electrically connected to the controller. The controller controls the opening or closing of the first control valve 61 and the second control valve 62 according to the signal transmitted by the humidity monitoring element 44.

[0086] It is understood that the electrolysis unit 21 releases high temperatures during electrolysis, causing the water in the electrolyte to evaporate. This evaporated water mixes with the hydrogen gas and flows into the hydrogen outlet channel 23. To increase the concentration of produced hydrogen, gas-liquid separation is necessary. Hydrogen enters the gas-liquid separator 31 through the inlet pipe 312, separating the water from the hydrogen. The separated water is discharged from the gas-liquid separator 31, while the separated hydrogen enters the transmission assembly 32 through the outlet pipe 311. Subsequently, the hydrogen enters the monitoring branch 321, where the humidity monitoring element 44 monitors the humidity of the hydrogen. When the humidity of the hydrogen meets the requirements, it indicates that the hydrogen meets the final production needs. At this time, the controller opens the first control valve 61 and closes the second control valve 62, allowing the hydrogen to be delivered to external equipment through the hydrogen supply branch 322. When the humidity of the hydrogen is detected to be below the required level, it means that the hydrogen at this time cannot meet the requirements of the final output. At this time, the controller controls the first control valve 61 to close and controls the second control valve 62 to open, and the hydrogen that does not meet the requirements is discharged from the monitoring branch 321.

[0087] Furthermore, the gas-liquid separator 31 includes at least two sets, each set of gas-liquid separators 31 including a cavity. The inlet pipe 312 and outlet pipe 311 of each gas-liquid separator 31 are interconnected with the cavity. The outlet pipe 311 of at least one set of gas-liquid separators 31 is interconnected with the inlet pipe 312 of at least another set of gas-liquid separators 31 to form a liquefaction channel. The hydrogen processing module 30 also includes a liquefaction component 33, which is disposed in the liquefaction channel and is used to convert at least a portion of the gas in the liquefaction channel into liquid.

[0088] In one specific embodiment, the gas-liquid separator 31 includes a first gas-liquid separator 301 and a second gas-liquid separator 302. The hydrogen produced by the electrolysis unit 21 enters the cavity through the inlet pipe 312 of the first gas-liquid separator 301. Subsequently, the hydrogen undergoes gas-liquid separation. The separated hydrogen enters the liquefaction channel through the outlet pipe 311 and passes through the liquefaction component 33 on the liquefaction channel, causing the water in the hydrogen to liquefy again. Then, the hydrogen enters the cavity of the second gas-liquid separator 302 through the inlet pipe 312 of the second gas-liquid separator 302. After gas-liquid separation occurs again, the hydrogen enters the transmission component 32. It is understandable that, since the hydrogen produced by the electrolysis unit 21 is at a high temperature, a single gas-liquid separation is insufficient to completely separate the evaporated water from the hydrogen. Therefore, in this embodiment, a liquefaction component 33 is provided between the two gas-liquid separators 31, so that most of the evaporated water in the hydrogen is liquefied. Then, the hydrogen is separated again by a gas-liquid separation, which can greatly improve the purity of the hydrogen.

[0089] In some embodiments, the gas-liquid separator 31 further includes a drain pipe 313, which is connected to the bottom of the cavity. A third control valve group 603 is installed on the drain pipe 313 and is electrically connected to the controller. The monitoring mechanism also includes a second liquid level monitoring component 54, which is installed in the gas-liquid separator 31. The second liquid level monitoring component 54 is used to monitor the liquid level in the cavity. The controller controls the third control valve group 603 to open or close based on the signal from the second liquid level monitoring component 54.

[0090] In other words, when the second liquid level monitoring component 54 detects that the liquid level in the cavity is too high, the controller controls the third control valve group 603 to open, thereby discharging the liquid in the gas-liquid separator 31. In a specific embodiment, the third control valve group 603 includes a seventh control valve 67 and an eighth control valve 68 spaced apart on the drain pipe 313, both of which are electrically connected to the controller. In this embodiment, the reason for setting two control valves on the drain pipe 313 is to prevent the drain pipe 313 from being unable to be closed if only one control valve is set on it and it fails, thus affecting the gas-liquid separation effect of the gas-liquid separator 31. That is, the setting of two control valves is to improve the redundancy of the gas-liquid separator 31.

[0091] In one specific embodiment, the second liquid level monitoring component 54 includes a first liquid level gauge 541, a second liquid level gauge 542, and a third liquid level gauge 543. From the top to the bottom of the cavity, the first liquid level gauge 541, the second liquid level gauge 542, and the third liquid level gauge are sequentially and spaced apart on the gas-liquid separator 31 and electrically connected to the controller. This design with multiple liquid level gauges allows the controller to be triggered based on drainage requirements. For example, if there is too much liquid in the gas-liquid separator 31, the liquid will be drained. In this case, the controller will only open the third control valve group 603 when the liquid level detected by the first liquid level gauge 541 is higher than the height of the first liquid level gauge 541. Conversely, if there is too little liquid in the gas-liquid separator 31, the liquid needs to be drained. In this case, the controller will only open the third control valve group 603 after the third liquid level gauge 543 sends a signal to the controller.

[0092] In some embodiments, the liquefaction component 33 includes a condenser 331, which is electrically connected to a controller. When the humidity monitoring element 44 detects that the humidity of the hydrogen does not meet the standard, the controller controls the condenser 331 to reduce the condensation temperature, thereby reducing the humidity of the hydrogen.

[0093] Furthermore, the hydrogen processing module 30 also includes a hydrogen discharge channel 24, which is connected to an outlet pipe 311. A third control valve 63 is installed on the outlet pipe 311 and is electrically connected to the controller. The monitoring mechanism also includes a first pressure monitoring element 45, which is located in the outlet pipe 311 and electrically connected to the controller. The first pressure monitoring element 45 is used at least to monitor the pressure of the hydrogen in the hydrogen discharge channel 24. The controller controls the opening or closing of the third control valve 63 based on the signal transmitted by the first pressure monitoring element 45.

[0094] Specifically, when the hydrogen in the hydrogen discharge channel 24 has a certain pressure, the pressure promotes the separation of hydrogen and water in the gas-liquid separator 31. Furthermore, when liquid needs to be discharged from the gas-liquid separator 31, the gas pressure allows the liquid to be discharged more quickly. In this embodiment, when the first pressure monitoring element 45 detects that the hydrogen pressure in the hydrogen discharge channel 24 is too high, to prevent a hydrogen explosion due to excessive pressure, the controller controls the third control valve 63 to open, allowing hydrogen to be discharged through the hydrogen discharge channel 24. When the first pressure monitoring element 45 detects that the hydrogen pressure in the hydrogen discharge channel 24 is moderate, the controller controls the third control valve 63 to close, thereby improving the gas-liquid separation and liquid discharge efficiency.

[0095] In this embodiment, the liquid inlet channel 12 includes a first pipe 121, a second pipe 122, and a third pipe 123. The first end of the first pipe 121 is connected to the third pipe 123, and the second end of the first pipe 121 is connected to an external water supply device. The first end of the second pipe 122 is connected to the third pipe 123, and the third pipe 123 is connected to the storage tank 11. A second control valve group 602 is provided between the first pipe 121 and the second pipe 122, and the second control valve group 602 is electrically connected to the controller. The monitoring mechanism also includes a water quality monitoring element 46, which is disposed in the first pipe 121 and electrically connected to the controller. The water quality monitoring element 46 is used to monitor whether the water quality in the first pipe 121 is up to standard. The controller controls the second control valve group 602 to close or open the second pipe 122 and the third pipe 123 based on the signal transmitted by the water quality monitoring element 46.

[0096] In other words, when the water quality monitoring element 46 detects that the water quality entering the first pipe 121 does not meet the requirements, the controller controls the second control valve group 602 to close the third pipe 123 and open the second pipe 122. At this time, water enters through the first pipe 121 and exits through the second pipe 122. Conversely, when the water quality monitoring element 46 detects that the water quality entering the first pipe 121 meets the requirements, the controller controls the second control valve group 602 to close the second pipe 122 and open the third pipe 123. At this time, water enters through the first pipe 121 and flows into the storage tank 11 through the third pipe 123. The structure of this embodiment can, to a certain extent, prevent the water entering the storage tank 11 from being substandard.

[0097] It is understood that deionized water is typically used to prepare the electrolyte to prevent other ions from affecting the electrolysis efficiency of the hydrogen production system. Furthermore, some ions in the water may react during electrolysis, generating impurities. Excessive impurities can cause blockage or damage to the electrolysis component 21. Therefore, in one specific embodiment, the water quality monitoring element 46 includes a second conductivity monitoring element 461. It is understood that the higher the ion content in deionized water, the higher its conductivity. Therefore, when the second conductivity monitoring element 461 detects that the conductivity of the water in the first pipe 121 is higher than a predetermined threshold, the controller controls the second control valve group 602 to close the third pipe 123 and open the second pipe 122.

[0098] In some embodiments, the second control valve assembly 602 includes a ninth control valve 69 and a tenth control valve 70. The ninth control valve 69 is disposed in the second pipeline 122, and the tenth control valve 70 is disposed in the third pipeline 123. Both the ninth control valve 69 and the tenth control valve 70 are electrically connected to the controller. When the water quality is detected to be substandard, the controller opens the ninth control valve 69 and closes the tenth control valve 70. When the water quality is detected to be acceptable, the controller closes the ninth control valve 69 and opens the tenth control valve 70.

[0099] Furthermore, a receiving cavity is provided within the storage tank 11, and an elongated channel 19 is provided on the storage tank 11 along its height direction, communicating with the receiving cavity. The liquid supply module also includes a heating component 18, which is at least partially located within the receiving cavity and on one side of the elongated channel 19 near the bottom wall of the receiving cavity. The heating component 18 is electrically connected to the controller. The monitoring mechanism also includes a first liquid level monitoring component 47, which is disposed in the elongated channel 19 and is used to monitor the liquid level in the receiving cavity. The first liquid level monitoring component 47 is electrically connected to the controller. The controller controls the heating component 18 to heat the liquid in the receiving cavity based on the signal transmitted by the first liquid level monitoring component 47.

[0100] It is understandable that when the liquid in the container cavity cannot submerge the heating component 18, the heating component 18 may be at risk of dry burning and damage. In this embodiment, the first liquid level monitoring component 47 can monitor the liquid level in the container cavity through the elongated channel 19. When the first liquid level monitoring component 47 detects that the liquid level in the container cavity submerges the heating component 18, the controller controls the heating component 18 to start working; when the first liquid level monitoring component 47 detects that the liquid level in the container cavity does not submerge the heating component 18, the controller controls the heating component 18 to stop working. In addition, in this embodiment, the heating component 18 is disposed in the container cavity and located on the side of the elongated channel 19 near the bottom wall of the container cavity. When the heating component 18 heats the liquid in the container cavity, the heated liquid rises and mixes evenly with other liquids, resulting in uniform heating of the liquid in the container cavity. Meanwhile, the reason why the liquid level in the accommodating cavity is indirectly measured by the elongated channel 19 in this embodiment is that the elongated channel 19 can reduce the contact area between the first liquid level monitoring component 47 and the electrolyte to a certain extent, prevent the electrolyte from corroding the first liquid level monitoring component 47 too quickly, and improve the service life of the first liquid level monitoring component 47 to a certain extent.

[0101] In some embodiments, the elongated channel 19 includes a fourth pipe 191 and a fifth pipe 192. Along the height direction of the storage tank 11, the fourth pipe 191 is near the top of the receiving cavity, and the fifth pipe 192 is near the bottom of the receiving cavity. The first liquid level monitoring component 47 includes a fourth pressure monitoring element 471, a fifth pressure monitoring element 472, and a calculation element 473. The fourth pressure monitoring element 471 is disposed in the fourth pipe 191 to detect the pressure within the fourth pipe 191. The fifth pressure monitoring element 472 is disposed in the fifth pipe 192 to detect the pressure within the fifth pipe 192. The calculation element 473 is electrically connected to the fourth pressure monitoring element 471, the fifth pressure monitoring element 472, and the controller, respectively. The calculation element 473 calculates the liquid level height based on the signals transmitted by the fourth pressure monitoring element 471 and the fifth pressure monitoring element 472, and transmits the liquid level height to the controller.

[0102] Specifically, during actual operation of the hydrogen production system, the liquid level in the storage tank 11 is typically no higher than the connection point between the fourth pipe 191 and the containment cavity. At this time, the fourth pressure monitoring element 471 monitors the gas pressure P0 above the liquid level. The electrolyte flows into the fifth pipe 192, causing the fifth pressure monitoring element 472 to monitor the liquid pressure within the fifth pipe 192, specifically the liquid pressure P1 at the connection point between the fifth pipe 192 and the containment cavity. The calculation element 473 calculates the liquid level in the containment cavity using the formula P1 - P0 = ρ * g * h, where g represents the acceleration due to gravity and h represents the distance between the liquid level and the pressure monitoring point. Since the heating element 18 is fixed within the containment cavity, the controller can determine whether the liquid in the containment cavity submerges the heating element 18.

[0103] Furthermore, the liquid supply channel 13 includes a main channel 131 and multiple branch channels 132, each of which is connected to the main channel 131. Each electrolysis component 21, hydrogen outlet channel 23, and reflux channel 22 includes multiple components. Each electrolysis component 21 is connected to each branch channel 132 in a one-to-one correspondence; each hydrogen outlet channel 23 is connected to each electrolysis component 21 in a one-to-one correspondence; the first end of each reflux channel 22 is connected to each electrolysis component 21 in a one-to-one correspondence; and the second end of each reflux channel 22 is connected to the liquid storage tank 11. Each electrolysis component 21 operates independently.

[0104] Specifically, the electrolysis component 21 is the core component of the hydrogen production system. When the electrolysis component 21 is damaged, the hydrogen production system cannot operate, requiring a complete shutdown to repair the electrolysis component 21 before the system can resume operation. This significantly reduces the hydrogen production efficiency and leads to excessively high maintenance costs. In this embodiment, due to the one-to-one correspondence between each electrolysis component 21, each branch channel 132, each return channel 22, and each hydrogen supply channel, each electrolysis component 21 operates independently. This means that when one or more of the multiple electrolysis components 21 are damaged, the remaining undamaged electrolysis components 21 can still continue to operate, thus avoiding a significant reduction in the hydrogen production efficiency to a certain extent. Furthermore, the damaged electrolysis component 21 can be maintained without shutting down the entire hydrogen production system, greatly reducing the maintenance costs of the hydrogen production system.

[0105] In addition, the liquid supply module also includes multiple oxygen venting channels 17. The first end of each oxygen venting channel 17 is connected to the liquid storage tank 11, and the second end of each oxygen venting channel 17 is connected to the outside of the liquid storage tank 11. The liquid supply module also includes a pressure relief component and a feedback component. The pressure relief component is disposed in at least one oxygen venting channel 17. The pressure relief component has a first state of closing the oxygen venting channel 17 and a second state of opening the oxygen venting channel 17. The feedback component is used to monitor the state of the pressure relief component and is electrically connected to the controller.

[0106] Specifically, the oxygen produced by electrolysis in the electrolysis unit 21 flows back to the storage tank 11 through the return channel 22, and is then discharged through the oxygen exhaust channel 17. However, when the hydrogen production system produces hydrogen at high power, a large amount of oxygen is generated, while the conveying area of ​​the oxygen exhaust channel 17 is small. This can cause oxygen to accumulate in the storage tank 11. When too much oxygen accumulates in the storage tank 11, leading to excessive pressure, the oxygen exhaust channel 17 may rupture. If the pressure in the storage tank 11 is sufficiently high, it may even cause an oxygen explosion or other safety accidents. Therefore, this embodiment includes a pressure relief component and a feedback component. When the gas pressure in the storage tank 11 is too high, the pressure relief component switches from the first state to the second state, allowing the gas in the storage tank 11 to flow out through more of the oxygen exhaust channels 17, thereby significantly reducing the gas pressure in the storage tank 11. Meanwhile, when the pressure relief component switches from the first state to the second state, the feedback component transmits the switching information of the pressure relief component to the controller. After receiving the information, the controller can reduce the working power of the hydrogen production system, thereby reducing the amount of hydrogen electrolyzed in the hydrogen production system and preventing the gas pressure in the storage tank 11 from remaining high after the pressure relief component switches states.

[0107] In one specific embodiment, the oxygen venting channel 17 includes two channels, and the pressure relief assembly includes a burst valve 72, which is disposed on one of the oxygen venting channels 17. The monitoring mechanism also includes a sixth pressure monitoring element 50 and a seventh pressure monitoring element 51. The sixth pressure monitoring element 50 is disposed on one of the oxygen venting channels 17, and the seventh pressure monitoring element 51 is disposed on the other oxygen venting channel 17. Both the sixth pressure monitoring element 50 and the seventh pressure monitoring element 51 are electrically connected to the controller.

[0108] Specifically, the sixth pressure monitoring element 50 and the seventh pressure monitoring element 51 are used to monitor the gas pressure value in the oxygen exhaust channel 17. The controller controls the working power of the electrolysis component 21 according to the pressure values ​​of the sixth pressure monitoring element 50 and the seventh pressure monitoring element 51, so as to prevent the gas pressure passing through the oxygen exhaust channel 17 from being too high, causing the oxygen exhaust channel 17 to deform or rupture.

[0109] In some embodiments, the monitoring mechanism further includes a second flow monitoring element 52, which is disposed in the hydrogen outlet channel 23 and located at the end of the hydrogen processing module 30 away from the electrolysis component 21. A first regulating valve 73 is also disposed on the hydrogen outlet channel 23, located at the end of the second flow monitoring element 52 away from the hydrogen processing module 30. A first control valve 61 is located at the end of the first regulating valve 73 away from the second flow monitoring element 52. The second flow monitoring element 52, the first regulating valve 73, and the first control valve 61 are all electrically connected to a controller. The controller controls the first regulating valve 73 to adjust the pressure inside the hydrogen outlet channel 23 according to the signal transmitted by the second flow monitoring element 52, and controls the first control valve 61 to open or close.

[0110] Specifically, the second flow monitoring element 52, the first regulating valve 73, and the first control valve 61 are all located on the hydrogen supply branch 322 of the transmission assembly 32. After the hydrogen produced by electrolysis is processed by the hydrogen processing module 30, if the processed hydrogen meets the standards, it needs to be output to external devices. However, some external devices have certain requirements for the flow rate of the input hydrogen. Therefore, in this embodiment, the first regulating valve 73, the second flow monitoring element 52, and the first control valve 61 are provided. That is, when a larger flow rate is required externally, the pressure of the gas in the hydrogen outlet channel 23 can be increased by the first regulating valve 73, thereby increasing the pressure difference between the inside and outside of the hydrogen outlet channel 23 and increasing the flow rate of hydrogen in the hydrogen outlet channel 23. At the same time, when the first regulating valve 73 is adjusted, the controller controls the first control valve 61 to close, preventing hydrogen that does not meet the requirements of the external devices from entering the external devices. When the first regulating valve 73 adjusts the flow rate of hydrogen in the hydrogen outlet channel 23 to meet the requirements of the external devices, the controller controls the first control valve 61 to open. The second flow monitoring element 52 can be a proton flow meter.

[0111] In some embodiments, the monitoring mechanism further includes an eighth pressure monitoring element 55, which is disposed in the hydrogen outlet channel 23 and located between the first control valve 61 and the second flow monitoring element 52. The eighth pressure monitoring element is electrically connected to the controller.

[0112] Similarly, some external devices may have certain requirements on the pressure of the hydrogen output from the hydrogen production system. When the pressure of the hydrogen in the hydrogen outlet channel 23 does not meet the requirements of the external device, the controller controls the first regulating valve 73 to change the pressure of the hydrogen in the hydrogen outlet channel 23 and controls the first control valve 61 to close. When the eighth pressure monitoring element 55 detects that the pressure of the hydrogen in the hydrogen outlet channel 23 meets the requirements, the controller controls the first control valve 61 to open, allowing hydrogen to enter the external device through the hydrogen outlet channel 23. It is worth mentioning that different external devices require different hydrogen parameters, and the same external device may require different hydrogen parameters in different scenarios. Therefore, this application does not specifically limit the pressure and flow rate of the output hydrogen.

[0113] In some embodiments, a second control valve 62 is further provided on the monitoring branch 321, and the second control valve 62 is located between the humidity monitoring element 44 and the gas-liquid separator 31. The monitoring mechanism also includes a third flow monitoring element 53, which is disposed on the monitoring branch 321 and located between the humidity monitoring element 44 and the third flow monitoring element 53. Both the third flow monitoring element 53 and the second control valve 62 are electrically connected to a controller, and the controller controls the second control valve 62 to adjust the pressure of hydrogen in the monitoring branch 321 according to the signal transmitted by the third flow monitoring element 53.

[0114] It is understandable that the humidity of hydrogen needs to be monitored after gas-liquid separation. To avoid excessive hydrogen being used for monitoring, this embodiment includes a third flow monitoring element 53 and a second control valve 62. That is, when the third flow monitoring element 53 detects that the flow rate of hydrogen through monitoring branch 321 is too high, the controller controls the second control valve 62 to reduce the pressure of hydrogen in monitoring branch 321, thereby decreasing the flow rate of hydrogen in monitoring branch 321. This prevents excessive hydrogen from being discharged from the hydrogen production system through monitoring branch 321, thus avoiding hydrogen waste. The third flow monitoring element 53 includes a float flowmeter.

[0115] In one specific embodiment, the hydrogen production system operates as follows: An external water supply device is connected to the first pipeline 121. When the second conductivity monitoring element 461 detects that the conductivity of the water in the first pipeline 121 is too high, the controller controls the ninth control valve 69 to open and the tenth control valve 70 to close, at which point the water flows out through the second pipeline 122. When the second conductivity monitoring element 461 detects that the conductivity of the water in the first pipeline 121 meets the requirements, the controller controls the ninth control valve 69 to close and the tenth control valve 70 to open, at which point the water enters the storage tank 11 through the second pipeline 122. The water and the compound in the storage tank 11 form an electrolyte. When the first liquid level monitoring component 47 detects that the liquid in the storage tank 11 has submerged the heating component 18, the controller controls the heating component 18 to start working. Subsequently, when the second temperature monitoring element 49 detects that the temperature of the liquid in the storage tank 11 is higher than or equal to the predetermined heating temperature, the controller controls the sixth control valve 66 to open. Then, the electrolyte passes through the second vent valve 71, allowing some gas in the electrolyte to be discharged. Afterwards, under the action of the first temperature monitoring element 41 and the heat exchanger 141, the temperature of the electrolyte in the supply channel 13 is maintained within a certain temperature range. Simultaneously, under the action of the first conductivity monitoring element 48 and the fourth control valve 64, the conductivity of the electrolyte in the supply channel 13 meets the standard. Only after this standard is met does the electrolyte in the supply channel 13 enter the pump body 15 through the fourth control valve 64. Under the combined action of the controller and the first flow monitoring element 43, the pump body 15 maintains the flow rate of the electrolyte in the supply channel 13 within a certain range. Furthermore, the electrolyte in the supply channel 13 needs to be filtered through the filter 16 before being delivered to the electrolysis unit 21. During filtration by filter 16, if there is a small pressure difference between the electrolyte in the supply channels 13 at both ends of filter 16, the controller controls the first vent valve 161 to open, thereby venting the gas in filter 16. However, when there is a large pressure difference between the electrolyte in the supply channels 13 at both ends of filter 16, the controller not only controls the first vent valve 161 to open, but also controls the fourth control valve 64 and the fifth control valve 65 to close, in order to clean filter 16 and prevent electrolyte from flowing into electrolysis unit 21. The pressure of the electrolyte in the supply channels 13 at both ends of filter 16 is monitored by the second pressure monitoring element 421 and the third pressure monitoring element 422, respectively. When the electrolyte in the supply channels 13 enters electrolysis unit 21, it is electrolyzed into hydrogen and oxygen. The hydrogen enters the hydrogen outlet channel 23, while the electrolyzed electrolyte and oxygen enter the storage tank 11 through the return channel 22.Oxygen entering the storage tank 11 is discharged through the oxygen venting channel 17. In this embodiment, the oxygen venting channel 17 includes a first oxygen venting pipe 171 and a second oxygen venting pipe 172. A sixth pressure monitoring element 50 is installed on the first oxygen venting pipe 171, and a seventh pressure monitoring element 51 and a burst valve 72 are installed on the second oxygen venting pipe 172. When the oxygen pressure in the storage tank 11 is too high, the burst valve 72 on the second oxygen venting pipe 172 opens, thereby increasing the oxygen discharge rate in the storage tank 11. The sixth pressure monitoring element 50 and the seventh pressure monitoring element 51 are used to monitor the oxygen pressure in the first oxygen venting pipe 171 and the second oxygen venting pipe 172, respectively. The controller can stop the electrolysis unit 21 from working according to the monitored pressure. A first gas-liquid separator 301 and a second gas-liquid separator 302 are installed on the hydrogen outlet channel 23. The hydrogen in the hydrogen outlet channel 23 enters the first gas-liquid separator 301 for gas-liquid separation. The separated liquid is discharged under the action of the second liquid level monitoring element 54 and the controller. Part of the separated hydrogen enters the hydrogen discharge channel 24. Under the action of the first pressure monitoring element 45 and the third control valve 63, when the hydrogen pressure in the hydrogen discharge channel 24 is too high, the third control valve 63 is opened to allow the hydrogen to be discharged. Part of the hydrogen enters the condenser 331. The condensed liquid and hydrogen enter the second gas-liquid separator 302. The liquid flows out through the drain pipe 313, and the hydrogen enters the monitoring branch 321 and the hydrogen supply branch 322 respectively. When the humidity monitoring element 44 on the monitoring branch 321 detects that the humidity of the hydrogen does not meet the requirements, the controller opens the second control valve 62 to deliver the hydrogen to the hydrogen discharge channel 24. At the same time, the controller controls the condenser 331 to lower the condensation temperature. When the humidity monitoring element 44 on the monitoring branch 321 detects that the humidity of the hydrogen meets the requirements, the controller closes the second control valve 62 and opens the first control valve 61, allowing the hydrogen to be delivered to external equipment through the hydrogen outlet channel 23. In addition, a second flow monitoring element 52 and a first regulating valve 73 are installed on the hydrogen supply branch 322 to regulate the pressure or flow rate of hydrogen supplied to external equipment. A third flow monitoring element 53 and a second regulating valve 74 are installed on the monitoring branch 321 to reduce the flow rate of hydrogen flowing into the monitoring branch 321.

[0116] On the other hand, this application also provides a control method for a hydrogen production system, as shown in the appendix. Figure 8 As shown, the control method of the hydrogen production system is implemented using the above-mentioned hydrogen production system. The control method of the hydrogen production system includes: when the temperature of the electrolyte in the liquid supply channel 13 exceeds the first temperature range, controlling the electrolysis component 21 to stop working, and controlling the temperature control component 14 to change the temperature of the electrolyte in the liquid supply channel 13 until the temperature of the electrolyte in the liquid supply channel 13 is maintained within the first temperature range, controlling the electrolysis component 21 to start working.

[0117] Specifically, when the electrolyte temperature is outside the optimal electrolysis temperature range, the amount of hydrogen produced will decrease, and specific impurities may be generated during electrolysis, ultimately contaminating the electrolysis component 21 or the electrolyte. Therefore, to improve the efficiency of the hydrogen production system, the controller only controls the electrolysis component 21 to start working when the electrolyte temperature in the supply channel 13 is maintained within the first temperature range; otherwise, the controller controls the electrolysis component 21 to stop working. In this embodiment, the first temperature range is 50°C to 55°C.

[0118] Furthermore, the step of controlling the electrolysis component 21 to stop working and controlling the temperature control component 14 to change the temperature of the electrolyte in the supply channel 13 when the temperature of the electrolyte in the supply channel 13 exceeds the first temperature range includes: controlling the electrolysis component 21 to stop working and controlling the temperature control component 14 to heat the electrolyte in the supply channel 13 when the temperature of the electrolyte in the supply channel 13 is lower than the minimum value of the first temperature range; and controlling the temperature control component 14 to cool the electrolyte in the supply channel 13 when the temperature of the electrolyte in the supply channel 13 is higher than the maximum value of the first temperature range.

[0119] Understandably, when the temperature of the electrolyte in the supply channel 13 is lower than the minimum value of the first temperature range, the controller first controls the electrolysis component 21 to stop working. At this time, the electrolysis component 21 will not electrolyze the electrolyte, and the electrolyte flows back to the storage tank 11 through the return channel 22. Then, the controller controls the temperature control component 14 to heat the electrolyte in the supply channel 13, thereby bringing the electrolyte temperature to and maintaining it within the first temperature range. Subsequently, the controller controls the electrolysis component 21 to start working. Similarly, when the temperature of the electrolyte in the supply channel 13 is higher than the maximum value of the first temperature range, the controller first controls the electrolysis component 21 to stop working, and then controls the temperature control component 14 to cool the electrolyte in the supply channel 13 until the electrolyte temperature drops and is maintained within the first temperature range, at which point the controller controls the electrolysis component 21 to start working.

[0120] Furthermore, when the pressure difference of the electrolyte in the supply channels 13 at both ends of the filter 16 is higher than a first predetermined value and lower than a second predetermined value, the first vent valve 161 is opened; when the pressure difference of the electrolyte in the supply channels 13 at both ends of the filter 16 is lower than or equal to the first predetermined value, the first vent valve 161 is closed. When the pressure difference of the electrolyte in the supply channels 13 at both ends of the filter 16 is higher than the second predetermined value, the first control valve group 601 is closed, and the first vent valve 161 on the filter 16 is opened; when the pressure difference of the electrolyte in the supply channels 13 at both ends of the filter 16 is lower than or equal to the second predetermined value, the first control valve group 601 is opened.

[0121] When the pressure difference of the electrolyte in the supply channels 13 at both ends of filter 16 is higher than a first predetermined value but lower than a second predetermined value, the pressure difference may be due to a large amount of gas in filter 16. Therefore, it is necessary to discharge the gas in filter 16. At this time, the controller controls the first exhaust valve 161 to open to discharge the gas in filter 16, avoiding excessive gas in the electrolyte, which would affect the hydrogen production efficiency of the hydrogen production system. When the pressure difference of the electrolyte in the supply channels 13 at both ends of filter 16 is higher than the second predetermined value, it may be due to a large amount of impurities in filter 16, causing blockage of filter 16. At this time, the controller controls the first control valve group 601 to close and controls the first exhaust valve 161 to open, thereby facilitating cleaning of filter 16 by personnel. In this embodiment, the first predetermined value can be set to 10 Pa, 20 Pa, 30 Pa, 40 Pa, and 50 Pa. The second predetermined value can be set to 1500 Pa, 2000 Pa, and 2500 Pa. In other embodiments, the first exhaust valve 161 is opened when the hydrogen production system is started. In other words, whenever the hydrogen production system starts working, the controller opens the first exhaust valve 161 to prevent excessive gas accumulation in the filter 16, which would affect the filtration function of the filter 16.

[0122] Optionally, when the flow rate of the electrolyte in the supply channel 13 is greater than the maximum value of the predetermined flow range, the pump body 15 is controlled to reduce the flow rate of the electrolyte in the supply channel 13 until the flow rate of the electrolyte in the supply channel 13 reaches the predetermined flow range; when the flow rate of the electrolyte in the supply channel 13 is less than or equal to the minimum value of the predetermined flow range, the pump body 15 is controlled to increase the flow rate of the electrolyte in the supply channel 13 until the flow rate of the electrolyte in the supply channel 13 reaches the predetermined flow range.

[0123] It is understandable that an excessively high flow rate of electrolyte entering the electrolysis unit 21 will increase the electrolyte consumption per unit time in the hydrogen production system, thereby increasing the operating cost of the hydrogen production system. Conversely, an excessively low flow rate of electrolyte entering the electrolysis unit 21 will result in insufficient supply of anions and cations within the electrolysis unit 21, leading to a decrease in the hydrogen production efficiency of the hydrogen production system. Therefore, in this embodiment, it is necessary to control the flow rate of electrolyte in the supply channel 13 within a predetermined flow rate range to avoid excessive waste of electrolyte or to prevent the hydrogen production system from having low hydrogen production efficiency. In this embodiment, the predetermined flow rate range is 900 L / min to 1000 L / min. That is to say, when the flow rate of electrolyte in the supply channel 13 is higher than 1000 L / min or lower than 900 L / min, the controller needs to control the pump body 15 to adjust the flow rate of electrolyte in the supply channel 13. It is worth mentioning that, in this embodiment, the value of the electrolyte flow range is only a preferred value, and the specific value of the predetermined flow range actually needs to be determined according to the rated power of the electrolytic stack.

[0124] Optionally, when the humidity of hydrogen in monitoring branch 321 is less than or equal to a predetermined humidity, the first control valve 61 is opened and the second control valve 62 is closed; when the humidity of hydrogen in monitoring branch 321 is greater than the predetermined humidity, the first control valve 61 is closed and the second control valve 62 is opened.

[0125] Specifically, when the humidity of the hydrogen gas output to external devices is high, the external devices are more prone to corrosion. Furthermore, excessively high humidity can negatively impact the operating efficiency of the external devices. Therefore, in this embodiment, the humidity of the hydrogen gas needs to be strictly controlled below a predetermined level. That is, when the humidity of the hydrogen gas in monitoring branch 321 is less than or equal to the predetermined humidity, the hydrogen humidity meets the standard and can be delivered to the intended device. Conversely, when the humidity of the hydrogen gas is higher than the predetermined humidity, the hydrogen humidity does not meet the standard and cannot be delivered to the intended device. In this embodiment, the predetermined humidity is set to 2584 ppb. In some embodiments, the dew point temperature of the hydrogen gas can be used instead of the humidity. That is, when the dew point temperature of the hydrogen gas in monitoring branch 321 is less than or equal to the predetermined temperature, the first control valve 61 is opened and the second control valve 62 is closed; when the dew point temperature of the hydrogen gas in monitoring branch 321 is higher than the predetermined temperature, the first control valve 61 is closed and the second control valve 62 is opened. The predetermined temperature can be set to -70°C.

[0126] Optionally, when the pressure of hydrogen in the outlet pipe 311 is lower than or equal to a predetermined pressure value, the third control valve 63 is closed; when the pressure of hydrogen in the outlet pipe 311 is higher than the predetermined pressure value, the third control valve 63 is opened.

[0127] Specifically, when the hydrogen gas in the outlet pipe 311 has a certain pressure, it can assist the gas-liquid separator 31 in discharging the liquid. However, if the hydrogen pressure in the outlet pipe 311 is too high, it may cause an explosion. Therefore, to avoid hydrogen safety accidents, the hydrogen in the outlet pipe 311 needs to be periodically discharged during hydrogen production. That is, when the hydrogen pressure in the outlet pipe 311 is lower than or equal to a predetermined pressure, the controller controls the third control valve 63 to close, allowing the lower-pressure hydrogen to facilitate the gas-liquid separator 31 in discharging the liquid; conversely, when the hydrogen pressure in the outlet pipe 311 is too high, the controller controls the third control valve 63 to open, allowing the hydrogen in the outlet pipe 311 to be discharged. In this embodiment, the predetermined pressure value can be set to 35 bar, 40 bar, or 45 bar.

[0128] Optionally, when the water quality in the first pipe 121 is substandard, the second control valve group 602 is controlled to open the second pipe 122 and close the third pipe 123; when the water quality in the first pipe 121 is up to standard, the second control valve group 602 is controlled to close the second pipe 122 and open the third pipe 123.

[0129] In one specific embodiment, the conductivity of the water is detected. Specifically, when the conductivity of the water in the first pipe 121 is higher than a predetermined conductivity, the controller controls the second control valve group 602 to open the second pipe 122 and close the third pipe 123; conversely, when the conductivity of the water in the first pipe 121 is lower than or equal to the predetermined conductivity, the controller controls the second control valve group 602 to close the second pipe 122 and open the third pipe 123. In this embodiment, the predetermined conductivity can be set to 5.5 μS / cm, 6 μS / cm, or 6.5 μS / cm.

[0130] Optionally, when the liquid level in the accommodating cavity is higher than the height of the heating component 18, the heating component 18 is controlled to heat; when the liquid level in the accommodating cavity is lower than or equal to the height of the heating component 18, the heating component 18 is controlled to stop heating.

[0131] Specifically, if the liquid level in the accommodating cavity is lower than the heating component 18, heating the heating component 18 may cause it to burn out and be damaged. Therefore, in this embodiment, the controller only controls the heating component 18 to heat when the liquid level in the accommodating cavity is higher than the height of the heating component 18.

[0132] In summary, the hydrogen production system and its control method of this application, by setting up a temperature control component 14 and a monitoring mechanism, ensure that the temperature of the electrolyte entering the electrolysis unit 21 is within the optimal electrolysis temperature, thereby improving the hydrogen production efficiency of the hydrogen production system. Furthermore, through the cooperation of the pump body 15, the first flow monitoring element 43, and the controller, the flow rate of the electrolyte entering the electrolysis unit 21 is kept within a reasonable flow range, improving the hydrogen production efficiency of the hydrogen production system while avoiding excessive waste of electrolyte. Additionally, the filter 16 filters out impurities in the electrolyte, improving both the hydrogen production efficiency and the service life of the hydrogen production system. On the other hand, the hydrogen production system of this application also includes a hydrogen processing module 30, which provides hydrogen with higher purity, thereby improving hydrogen utilization. The hydrogen outlet channel 23 is also equipped with a second flow monitoring element 52 and a first regulating valve 73, which, under the control of the controller, regulate the pressure or flow rate of the hydrogen in the outlet channel 23 to meet the requirements of external equipment.

[0133] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0134] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0135] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydrogen production system, characterized in that, include: The liquid supply module includes a storage tank (11), an inlet channel (12), a supply channel (13), a temperature control component (14), and a monitoring mechanism. The inlet channel (12) is connected to the storage tank (11), and the first end of the supply channel (13) is connected to the storage tank (11). The temperature control component (14) is located in the supply channel (13), and the monitoring mechanism is located in the supply channel (13). The monitoring mechanism is used to monitor the temperature of the electrolyte in the supply channel (13). The hydrogen production module includes an electrolysis unit (21), a reflux channel (22), and a hydrogen outlet channel (23). The electrolysis unit (21) is connected to the second end of the liquid supply channel (13). The reflux channel (22) is connected between the electrolysis unit (21) and the liquid storage tank (11). The first end of the hydrogen outlet channel (23) is connected to the electrolysis unit (21). A hydrogen processing module (30) is disposed in the hydrogen outlet channel (23), and the hydrogen processing module (30) is used at least to separate the liquid and gas in the hydrogen outlet channel (23); The controller is electrically connected to both the monitoring mechanism and the temperature control component (14), and the controller controls the electrolysis component (21) to start or stop working according to the signal transmitted by the monitoring mechanism, and controls the temperature control component (14) to change the temperature of the electrolyte in the liquid supply channel (13); The hydrogen processing module (30) includes a gas-liquid separator (31), which is provided with an outlet pipe (311) and is located in the hydrogen outlet channel (23). The hydrogen processing module (30) also includes a hydrogen discharge channel (24), which is connected to the gas outlet pipe (311). A third control valve (63) is provided on the gas outlet pipe (311), and the third control valve (63) is electrically connected to the controller. The monitoring mechanism further includes a first pressure monitoring element (45), which is disposed in the gas outlet pipe (311). The first pressure monitoring element (45) is electrically connected to the controller. The first pressure monitoring element (45) is used at least to monitor the pressure of hydrogen in the hydrogen discharge channel (24). The controller controls the opening or closing of the third control valve (63) according to the signal transmitted by the first pressure monitoring element (45). When the third control valve (63) is closed, the gas in the gas outlet pipe (311) is used to assist the liquid in the gas-liquid separator (31) to be discharged.

2. The hydrogen production system according to claim 1, characterized in that, The monitoring mechanism includes a first temperature monitoring element (41), which is disposed in the liquid supply channel (13). The first temperature monitoring element (41) is electrically connected to the controller and is used to monitor the temperature of the electrolyte in the liquid supply channel (13). The temperature control component (14) includes a heat exchanger (141), which is disposed in the liquid supply channel (13) and is electrically connected to the controller. The controller controls the electrolysis unit (21) to start or stop working based on the signal transmitted by the first temperature monitoring element (41), and controls the heat exchanger (141) to change the temperature of the electrolyte in the liquid supply channel (13).

3. The hydrogen production system according to claim 1, characterized in that, The liquid supply module also includes a filter (16), which is disposed in the liquid supply channel (13). A first exhaust valve (161) is disposed on the filter (16), and the first exhaust valve (161) is electrically connected to the controller. The monitoring mechanism further includes a differential pressure monitoring component (42), which is disposed in the liquid supply channel (13) and located between the filter (16) and the liquid storage tank (11), and between the filter (16) and the electrolysis component (21). The differential pressure monitoring component (42) is electrically connected to the controller. The differential pressure monitoring component (42) is used at least to monitor the pressure difference of the electrolyte in the liquid supply channel (13) at both ends of the filter (16). The first control valve group (601) is disposed in the liquid supply channel (13) and located between the filter (16) and the liquid storage tank (11) and / or the filter (16) and the electrolysis component (21). The first control valve group (601) is electrically connected to the controller. The controller controls the opening or closing of the first control valve group (601) and the first exhaust valve (161) based on the signal transmitted by the differential pressure monitoring component (42).

4. The hydrogen production system according to claim 1, characterized in that, The liquid supply module also includes a pump body (15), which is disposed in the liquid supply channel (13) and is electrically connected to the controller; The monitoring mechanism further includes a first flow monitoring element (43), which is disposed in the liquid supply channel (13) and located between the pump body (15) and the electrolysis component (21). The first flow monitoring element (43) is electrically connected to the controller. The controller controls the pump body (15) to change the flow rate of the electrolyte in the liquid supply channel (13) according to the signal transmitted by the first flow monitoring element (43).

5. The hydrogen production system according to any one of claims 1 to 4, characterized in that, The hydrogen processing module (30) further includes a transmission component (32). The gas-liquid separator (31) is provided with an inlet pipe (312) and an outlet pipe (311). The gas-liquid separator (31) is located in the hydrogen outlet channel (23). The transmission component (32) is provided with a hydrogen supply branch (322) and a monitoring branch (321). Both the hydrogen supply branch (322) and the monitoring branch (321) are connected to the outlet pipe (311). A first control valve (61) is provided on the hydrogen supply branch (322), and a second control valve (62) is provided on the monitoring branch (321). The monitoring mechanism further includes a humidity monitoring element (44), which is disposed in the monitoring branch (321) and is used to monitor the hydrogen humidity in the monitoring branch (321). Along the gas transmission direction in the monitoring branch (321), the distance from the humidity monitoring element (44) to the gas-liquid separator (31) is less than the distance from the second control valve (62) to the gas-liquid separator (31). The channels in the electrolysis component (21), the gas-liquid separator (31), and the hydrogen supply branch (322) form the hydrogen outlet channel (23). The first control valve (61), the second control valve (62), and the humidity monitoring element (44) are all electrically connected to the controller. The controller controls the opening or closing of the first control valve (61) and the second control valve (62) according to the signal transmitted by the humidity monitoring element (44).

6. The hydrogen production system according to any one of claims 1 to 4, characterized in that, The gas-liquid separator (31) includes at least two sets, each set of the gas-liquid separator (31) includes an inlet pipe (312), an outlet pipe (311), and a cavity. The inlet pipe (312) and the outlet pipe (311) of each gas-liquid separator (31) are interconnected with the cavity. The outlet pipe (311) of at least one set of the gas-liquid separator (31) is interconnected with the inlet pipe (312) of at least another set of the gas-liquid separator (31) to form a liquefaction channel. The hydrogen processing module (30) further includes: A liquefaction component (33) is disposed in the liquefaction channel and is used to convert at least a portion of the gas in the liquefaction channel into a liquid.

7. The hydrogen production system according to any one of claims 1 to 4, characterized in that, The liquid inlet channel (12) includes a first pipe (121), a second pipe (122) and a third pipe (123). The first end of the first pipe (121) is connected to the third pipe (123), and the second end of the first pipe (121) is used to connect to an external water supply device. The first end of the second pipe (122) is connected to the third pipe (123), and the third pipe (123) is connected to the liquid storage tank (11). A second control valve group (602) is provided between the first pipe (121) and the second pipe (122), and the second control valve group (602) is electrically connected to the controller. The monitoring mechanism also includes a water quality monitoring element (46), which is installed in the first pipeline (121). The water quality monitoring element (46) is electrically connected to the controller and is used to monitor whether the water quality in the first pipeline (121) is qualified. The controller controls the second control valve group (602) to close or open the second pipeline (122) according to the signal transmitted by the water quality monitoring element (46), and controls the second control valve group (602) to close or open the third pipeline (123).

8. The hydrogen production system according to any one of claims 1 to 4, characterized in that, The liquid storage tank (11) is provided with a accommodating cavity. Along the height direction of the liquid storage tank (11), a long and narrow channel (19) is provided on the liquid storage tank (11), and the long and narrow channel (19) is connected to the accommodating cavity. The liquid supply module also includes a heating component (18), which is at least partially located in the accommodating cavity and on the side of the elongated channel (19) near the bottom wall of the accommodating cavity. The heating component (18) is electrically connected to the controller. The monitoring mechanism further includes a first liquid level monitoring component (47), which is disposed in the elongated channel (19). The first liquid level monitoring component (47) is used to monitor the liquid level in the accommodating cavity at least. The first liquid level monitoring component (47) is electrically connected to the controller. The controller controls the heating assembly (18) to heat the liquid in the accommodating cavity based on the signal transmitted by the first liquid level monitoring component (47).

9. The hydrogen production system according to any one of claims 1 to 4, characterized in that, The liquid supply channel (13) includes a main channel (131) and multiple branch channels (132), and each branch channel (132) is connected to the main channel (131); The electrolysis component (21), the hydrogen outlet channel (23), and the reflux channel (22) each include multiple components. Each electrolysis component (21) is connected to each branch channel (132) in a one-to-one correspondence. Each hydrogen outlet channel (23) is connected to each electrolysis component (21) in a one-to-one correspondence. The first end of each reflux channel (22) is connected to each electrolysis component (21) in a one-to-one correspondence. The second end of each reflux channel (22) is connected to the liquid storage tank (11). Each electrolysis component (21) operates independently.

10. A control method for a hydrogen production system, characterized in that, The control method for the hydrogen production system is implemented using the hydrogen production system described in any one of claims 1 to 9, and the control method for the hydrogen production system includes: When the temperature of the electrolyte in the supply channel (13) exceeds the first temperature range, the control electrolysis component (21) stops working and the control temperature control component (14) changes the temperature of the electrolyte in the supply channel (13) until the temperature of the electrolyte in the supply channel (13) is maintained within the first temperature range, and the control electrolysis component (21) starts working.

11. The control method for the hydrogen production system according to claim 10, characterized in that, When the temperature of the electrolyte in the supply channel (13) exceeds the first temperature range, the steps of controlling the electrolysis component (21) to stop working and controlling the temperature control component (14) to change the temperature of the electrolyte in the supply channel (13) include: When the temperature of the electrolyte in the supply channel (13) is lower than the lowest value of the first temperature range, the control electrolysis component (21) stops working and the control temperature control component (14) heats the electrolyte in the supply channel (13); When the temperature of the electrolyte in the supply channel (13) is higher than the maximum value of the first temperature range, the control electrolysis component (21) stops working and the control temperature control component (14) cools the electrolyte in the supply channel (13).

12. The control method for the hydrogen production system according to claim 10 or 11, characterized in that, The control method for the hydrogen production system also includes: When the pressure difference of the electrolyte in the supply channels (13) at both ends of the filter (16) is higher than the first predetermined value and lower than the second predetermined value, the first exhaust valve (161) is opened; when the pressure difference of the electrolyte in the supply channels (13) at both ends of the filter (16) is lower than or equal to the first predetermined value, the first exhaust valve (161) is closed; when the pressure difference of the electrolyte in the supply channels (13) at both ends of the filter (16) is higher than the second predetermined value, the first control valve group (601) is closed and the first exhaust valve (161) on the filter (16) is opened; when the pressure difference of the electrolyte in the supply channels (13) at both ends of the filter (16) is lower than or equal to the second predetermined value, the first control valve group (601) is opened.

13. The control method for the hydrogen production system according to claim 10 or 11, characterized in that, The control method for the hydrogen production system also includes: When the flow rate of electrolyte in the supply channel (13) is greater than the maximum value of the predetermined flow range, the pump body (15) is controlled to reduce the flow rate of electrolyte in the supply channel (13) until the flow rate of electrolyte in the supply channel (13) reaches the predetermined flow range; when the flow rate of electrolyte in the supply channel (13) is less than or equal to the minimum value of the predetermined flow range, the pump body (15) is controlled to increase the flow rate of electrolyte in the supply channel (13) until the flow rate of electrolyte in the supply channel (13) reaches the predetermined flow range.

14. The control method for the hydrogen production system according to claim 10 or 11, characterized in that, The control method for the hydrogen production system also includes: When the humidity of hydrogen in the monitoring branch (321) is less than or equal to the predetermined humidity, the first control valve (61) is opened and the second control valve (62) is closed; when the humidity of hydrogen in the monitoring branch (321) is greater than the predetermined humidity, the first control valve (61) is closed and the second control valve (62) is opened.

15. The control method for the hydrogen production system according to claim 10 or 11, characterized in that, The control method for the hydrogen production system also includes: When the pressure of hydrogen in the outlet pipe (311) is lower than or equal to the predetermined pressure value, the third control valve (63) is closed; when the pressure of hydrogen in the outlet pipe (311) is higher than the predetermined pressure value, the third control valve (63) is opened.

16. The control method for the hydrogen production system according to claim 10 or 11, characterized in that, The control method for the hydrogen production system also includes: When the water quality in the first pipe (121) is not up to standard, the second control valve group (602) is controlled to open the second pipe (122) and the second control valve group (602) is controlled to close the third pipe (123); when the water quality in the first pipe (121) is up to standard, the second control valve group (602) is controlled to close the second pipe (122) and the second valve group is controlled to open the third pipe (123).

17. The control method for the hydrogen production system according to claim 10 or 11, characterized in that, The control method for the hydrogen production system also includes: When the liquid level in the accommodating cavity is higher than the height of the heating component (18), the heating component (18) is controlled to heat; when the liquid level in the accommodating cavity is lower than or equal to the height of the heating component (18), the heating component (18) is controlled to stop heating.

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