Control system and control method for hydrogen production and charging equipment

Abstract

The invention relates to the technical field of hydrogen preparation and storage, in particular to a control system and a control method for hydrogen production and charging equipment, and the control system for the hydrogen production and charging equipment comprises a control module; the water supply module is electrically connected with the control module, and the water supply module is communicated with the electrolytic cell; the heat dissipation module is electrically connected with the control module; the pressure adjusting module is arranged on the hydrogen pipeline and used for adjusting the pressure of the hydrogen pipeline; and the power supply module supplies power to one or more groups of electrolytic cells, and the power supply module is electrically connected with the control module. According to the invention, the pressure, temperature, water volume and water quality of the hydrogen pipeline of the hydrogen production and charging equipment can be controlled, so that the hydrogen production and storage can be smoothly carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen preparation and storage, and in particular to a control system and a control method for hydrogen production and filling equipment. Background Art

[0002] In modern clean energy, hydrogen plays a very important role as a pollution-free energy source. Hydrogen production and filling equipment usually electrolyzes water through an electrolyzer, and then separates hydrogen and water through a gas-liquid separator. The separated hydrogen is dried through a drying device to form dry hydrogen, which finally enters the hydrogen storage device through valve groups, pipelines and other hydrogen filling devices for storage. In this process, water is often added according to actual needs, and the pressure in the hydrogen pipeline and the temperature of the hydrogen storage device are monitored in real time to see if they are within the set range. Once negligence occurs, serious consequences will occur.

[0003] Therefore, a control system and a control method for hydrogen production and filling equipment are needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a control system and a control method for hydrogen production and filling equipment, which can control the hydrogen pipeline pressure, temperature, water quantity and water quality of the hydrogen production and filling equipment, so as to ensure smooth hydrogen production and storage.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Control system for hydrogen production and filling equipment, including:

[0007] Control module;

[0008] A water supply module, the water supply module is electrically connected to the control module, and the water supply module is in communication with the electrolytic cell;

[0009] A heat dissipation module, the heat dissipation module is electrically connected to the control module;

[0010] A pressure regulating module, which is arranged on the hydrogen pipeline and is used to regulate the pressure of the hydrogen pipeline;

[0011] A power supply module, the power supply module supplies power to at least one group of the electrolytic cells, and the power supply module is electrically connected to the control module.

[0012] Furthermore, the control module includes a controller and a first liquid level sensor and a temperature sensor electrically connected to the controller, the first liquid level sensor is arranged in the water supply module, the temperature sensor is arranged on the hydrogen storage device and in the hydrogen production and filling equipment box, and the controller is electrically connected to the water supply module, the heat dissipation module, the power supply module and the pressure regulation module.

[0013] Furthermore, the water supply module includes a water pump and a water storage tank that are interconnected, the water pump is connected to the electrolytic cell, the water pump is electrically connected to the controller, and the first liquid level sensor is arranged on the water storage tank.

[0014] Furthermore, the control module also includes a TDS sensor, which is disposed in the water storage tank and is electrically connected to the controller.

[0015] Furthermore, the heat dissipation module includes a refrigerator and a fan, the refrigerator is arranged on the hydrogen storage device, and the refrigerator is electrically connected to the controller, and the fan is located in the box of the hydrogen production and filling equipment, and the fan is electrically connected to the controller.

[0016] Furthermore, the pressure regulating module includes a pressure switch, a pressure transmitter, a pressure sensor, an exhaust valve and a safety valve. The pressure switch, the pressure transmitter, the pressure sensor and the exhaust valve are all electrically connected to the controller, and the pressure switch and the pressure transmitter are all electrically connected to the power supply module. The pressure switch, the pressure transmitter, the pressure sensor and the exhaust valve are all connected to the hydrogen pipeline, and the exhaust valve and the safety valve are located downstream of the pressure transmitter, and the safety valve is a mechanical valve.

[0017] Furthermore, the control module also includes a hydrogen concentration detection sensor, which is electrically connected to the controller and is disposed in the hydrogen pipeline.

[0018] Furthermore, the control module also includes a second liquid level sensor, which is disposed on the gas-liquid separator and is electrically connected to the controller.

[0019] The control method uses the control system for the hydrogen production and filling equipment as described above to control the hydrogen production and filling equipment, comprising the following steps:

[0020] S100, when the hydrogen production and filling equipment is in operation, the control module monitors the hydrogen concentration in the hydrogen pipeline, and if it meets the requirements, proceeds to the next step; if it does not meet the requirements, the power supply module is cut off;

[0021] S200, the control module monitors the pressure of the hydrogen pipeline, and if it is within a safe range, proceeds to the next step; if the pressure of the hydrogen pipeline is not less than a safety threshold A, the control module obtains the current operating state of the pressure sensor in the hydrogen pipeline;

[0022] S300, the control module detects the water quantity and water quality of the water tank in the water supply module; determines whether the water quantity and water quality of the water tank in the water supply module meet the requirements, if yes, proceeds to the next step; if not, controls the alarm module to alarm, requires the user to change or increase or decrease water, and cuts off the power supply module;

[0023] S400, the control module monitors the temperature of the hydrogen storage device and the hydrogen production and filling equipment box in real time. When the temperature of the hydrogen storage device exceeds the set temperature, the heat dissipation module is controlled to turn on the refrigerator on the hydrogen storage device for cooling; when the temperature inside the hydrogen production and filling equipment box exceeds the set temperature, the fan inside the hydrogen production and filling equipment box is controlled to dissipate heat, so that the temperature of the hydrogen storage device and the hydrogen production and filling equipment box is within the set temperature range.

[0024] Furthermore, the step S200 further includes the following steps:

[0025] S201, when the current operating state of the pressure sensor is valid, the control module further obtains whether the power supply module is successfully cut off. When the power supply module fails to be cut off, the control module obtains that the pressure of the hydrogen pipeline is not less than K*A, where K is a constant, K≥1, and controls the pressure transmitter through the control module to cut off the power supply module again. If the power supply module is successfully cut off, the electrolyzer stops producing hydrogen, and the control module further obtains whether the hydrogen storage device is full of hydrogen; if the power supply module still fails to be cut off, the control module opens the exhaust valve to discharge the airflow in the hydrogen pipeline;

[0026] S202, when the current operating state of the pressure sensor is failure, the control module further obtains that the pressure of the hydrogen pipeline is not less than K*A, the control module controls the pressure switch to cut off the power supply module, and opens the exhaust valve to exhaust the airflow in the hydrogen pipeline;

[0027] S203. When the hydrogen pipeline pressure is greater than the maximum safety threshold value B, the control module opens the safety valve to release the hydrogen in the hydrogen filling equipment to ensure that the gas pressure in the hydrogen pipeline is within a stable range.

[0028] Beneficial effects of the present invention:

[0029] The present invention provides a control system for hydrogen production and filling equipment, in which the water supply module, the heat dissipation module, the pressure regulating module and the power supply module are all electrically connected to the control module. The control module can control whether the water supply module supplies water to the electrolyzer according to the amount of water and water quality in the water supply module. The control module can control the heat dissipation module according to the temperature of the hydrogen storage device, thereby forcibly dissipating the heat of the hydrogen storage device to ensure that the temperature of the hydrogen storage device meets the requirements of hydrogen storage. The control module can also control the pressure regulating module to adjust the pressure of the hydrogen pipeline to ensure that the hydrogen pressure is within the set range. The control module controls whether electrolysis is performed by controlling the power supply module. In the above manner, the hydrogen pipeline pressure and temperature of the hydrogen production and filling equipment and the amount and quality of water in the water supply module can be controlled, thereby ensuring that hydrogen production and storage proceed smoothly.

[0030] A control method provided by the present invention uses the control system for hydrogen production and filling equipment as described above to control the hydrogen production and filling equipment, which can control the hydrogen pipeline pressure and temperature of the hydrogen production and filling equipment and the water volume and water quality of the water supply module, thereby ensuring smooth hydrogen production and storage.

[0031] The present invention sets a pressure regulating module. When the pressure of the hydrogen pipeline exceeds the safety range, the control module can simultaneously control the pressure switch, the pressure transmitter and the exhaust valve to release the exhaust pressure. In addition, a safety valve is set, which is a mechanical valve. When the electric control valve fails, the safety valve can still release the pressure and exhaust. Thus, a multiple insurance cut-off mode is realized, which further improves the reliability of the pipeline on-off control and ensures that the gas pressure of the hydrogen pipeline is within a stable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0033] Figure 1 It is a schematic diagram of a control system for hydrogen production and filling equipment of the present invention;

[0034] Figure 2 The present invention discloses a hydrogen production and filling structure principle diagram of a control system for hydrogen production and filling equipment.

[0035] In the figure:

[0036] 1. Control module; 11. Controller; 12. Pressure sensor; 13. First liquid level sensor; 14. Temperature sensor; 15. Second liquid level sensor; 16. TDS sensor; 17. Hydrogen concentration detection sensor; 2. Water supply module; 21. Water pump; 3. Pressure regulating module; 31. Exhaust valve; 4. Power supply module; 5. Alarm module; 6. Heat dissipation module; 61. Refrigerator; 62. Fan; 7. Power supply module; 8. Electrolyzer; 81. Gas-liquid separator; 82. Dryer; 32. Pressure transmitter; 33. Pressure switch; 34. Safety valve; 35. Hydrogen filling valve. DETAILED DESCRIPTION

[0037] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0038] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0039] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0040] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0041] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0042] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0043] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0044] In modern clean energy, hydrogen plays a very important role as a pollution-free energy source. Hydrogen production and filling equipment usually electrolyzes water through an electrolyzer, and then separates hydrogen and water through a gas-liquid separator. The separated hydrogen is dried through a drying device to form dry hydrogen, and finally enters the hydrogen storage device through valve groups, pipelines and other hydrogen filling devices for storage. The hydrogen storage device is preferably a low-pressure solid-state hydrogen storage device. In this process, water is often added according to actual needs, and the pressure in the hydrogen pipeline and the temperature of the hydrogen storage device are monitored in real time to see if they are within the set range. Once negligence occurs, serious consequences will occur.

[0045] When using hydrogen production and filling equipment to prepare and store hydrogen, in order to be able to control the hydrogen pipeline pressure, temperature, and water volume and quality of electrolyzed water of the hydrogen production and filling equipment, so as to ensure the smooth production and storage of hydrogen, such as Figure 1-Figure 2 As shown, the present invention provides a control system for hydrogen production and filling equipment. The control system for hydrogen production and filling equipment includes a control module 1, a water supply module 2, a heat dissipation module 6, a pressure regulating module 3 and a power supply module 7.

[0046] Among them, the water supply module 2 is electrically connected to the control module 1, and the water supply module 2 is communicated with the electrolyzer 8. The control module 1 can control the water supply module 2 according to the amount and quality of water in the water supply module 2; the heat dissipation module 6 is electrically connected to the control module 1, and the heat dissipation module 6 is used to dissipate heat from the hydrogen storage device; the pressure regulating module 3 is arranged on the hydrogen pipeline, and the pressure regulating module 3 is electrically connected to the control module 1, and is used to regulate the pressure of the hydrogen pipeline; the power supply module 7 supplies power to one or more groups of electrolyzers 8, and the power supply module 7 is electrically connected to the control module 1.

[0047] During the hydrogen production and charging process, water is ionized in the electrolytic cell 8 and then separated by the gas-liquid separator 81. The hydrogen is dried by the dryer 82 and then enters the hydrogen storage device through the hydrogen charging valve 35 on the hydrogen pipeline.

[0048] The control module 1 can control whether the water supply module 2 supplies water to the electrolyzer 8 according to the amount of water and water quality in the water supply module 2. The control module 1 can control the heat dissipation module 6 according to the temperature of the hydrogen storage device, thereby forcibly dissipating the heat of the hydrogen storage device to ensure that the temperature of the hydrogen storage device meets the requirements of hydrogen storage. The control module 1 can also control the pressure regulating module 3 to adjust the pressure of the hydrogen pipeline to ensure that the gas pressure of hydrogen is within the set range. The control module 1 controls the operating state of the electrolyzer 8 by controlling the power supply module 7. In the above manner, the hydrogen pipeline pressure and temperature of the hydrogen production and filling equipment and the water amount and water quality of the water supply module 2 can be controlled to ensure the smooth production and storage of hydrogen.

[0049] Furthermore, the control module 1 includes a controller 11 and a first liquid level sensor 13 and a temperature sensor 14 electrically connected to the controller 11. The first liquid level sensor 13 is arranged on the water storage tank of the water supply module 2, the temperature sensor 14 is arranged on the hydrogen storage device, and the controller 11 is electrically connected to the water supply module 2, the heat dissipation module 6, the power supply module 7 and the pressure regulating module 3. The control module 1 collects the water volume of the water supply module 2 through the first liquid level sensor 13, and collects the temperature of the hydrogen storage device through the temperature sensor 14. The controller 11 performs control according to the collected signals, which can ensure that the hydrogen production and storage process proceeds smoothly.

[0050] Furthermore, the water supply module 2 includes a water pump 21 and a water storage tank which are interconnected. The water pump 21 is connected to the electrolytic cell 8, and the water pump 21 is electrically connected to the controller 11. The first liquid level sensor 13 is used to collect the liquid level of the water storage tank. The controller 11 determines the water level of the water storage tank according to the first liquid level sensor 13, and then controls the start and stop of the water pump 21 to realize the automatic water replenishment operation.

[0051] Furthermore, the control module 1 further includes a TDS sensor 16 (water quality sensor), which is disposed in the water storage tank and is electrically connected to the controller 11. By using the TDS sensor 16 to detect the water quality, it is possible to determine whether the water quality meets the requirements for electrolysis. If the requirements are met, the controller 11 controls the water pump 21 to replenish water in the electrolytic cell 8 when the electrolytic cell 8 is short of water. If the water quality does not meet the requirements, the water in the water storage tank is replaced as needed.

[0052] Furthermore, the heat dissipation module 6 includes a refrigerator 61 and a fan 62. The refrigerator 61 is arranged on the hydrogen storage device and is electrically connected to the controller 11. The fan 62 is located in the hydrogen production and filling equipment box and is electrically connected to the controller 11. When hydrogen is compressed and stored in the hydrogen storage device, the hydrogen storage alloy in the hydrogen storage device absorbs hydrogen to generate a large amount of heat. The temperature of the hydrogen storage device is collected through the temperature sensor 14, and then the refrigerator 61 is controlled to work and dissipate heat according to actual needs, thereby ensuring that the hydrogen storage device is in a more suitable temperature range to prevent unexpected risks.

[0053] Furthermore, the pressure regulating module includes pressure control components such as a pressure switch 33, a pressure transmitter 32, a pressure sensor, an exhaust valve 31 and a safety valve 34, wherein the pressure switch 33, the pressure transmitter 32, the pressure sensor and the exhaust valve 31 are electrically connected to the controller 11, the pressure switch 33, the pressure transmitter 32, the pressure sensor and the exhaust valve 31 are all connected to the hydrogen pipeline, and the exhaust valve 31 and the safety valve 34 are located downstream of the pressure transmitter 32, the pressure switch 33 and the pressure transmitter 32 are both electrically connected to the power supply module 7, and the safety valve 34 is a mechanical valve. The pressure regulating module can improve the safety of the hydrogen production and filling equipment by setting two or more pressure control components.

[0054] When the hydrogen pipeline pressure of the hydrogen production and filling equipment is greater than or equal to the safety threshold value A, the control module 1 obtains the current operating state of the pressure sensor in the hydrogen pipeline.

[0055] When the current operating state of the pressure sensor 12 is valid, the control module further obtains whether the power supply module 7 is successfully cut off. When the power supply module 7 is cut off, the electrolyzer 8 stops producing hydrogen, and further obtains whether the hydrogen storage device is full of hydrogen. When the hydrogen storage device is full, the control module opens the exhaust valve 31 to exhaust and release pressure; when the hydrogen storage device is not full, the heat dissipation module 6 of the hydrogen storage device is started to reduce the air pressure in the hydrogen storage device, and the hydrogen storage alloy in the hydrogen storage device continues to absorb hydrogen, so that the hydrogen pipeline pressure is reduced. When the power supply module 7 fails to be cut off, the control module 1 obtains that the pipeline pressure is greater than or equal to K*A (where K is a constant, K≥1, and A is a safety threshold), and the pressure transmitter 32 can be controlled by the control module 1 to try to cut off the power supply module 7 again. If the power supply module 7 is successfully cut off, the electrolyzer 8 stops producing hydrogen, and further obtains whether the hydrogen storage device is full of hydrogen; if the power supply module 7 still fails to be cut off, the control module 1 opens the exhaust valve 31 to discharge the airflow in the hydrogen pipeline.

[0056] When the current operating state of the pressure sensor 12 is failure, the control module 1 further obtains that the hydrogen pipeline pressure is greater than or equal to K*A, the control module 1 controls the pressure switch 33 to cut off the power supply module 7 and open the exhaust valve 31 to exhaust the airflow in the pipeline.

[0057] The hydrogen production and filling equipment is also provided with a safety valve 34. When the hydrogen pipeline pressure is greater than the maximum safety threshold value B, the control module 1 opens the safety valve 34 to relieve the pressure of the hydrogen production and filling equipment to ensure that the gas pressure of the hydrogen pipeline is within a stable range. Through the multiple insurance cut-off mode, the reliability of the on-off control of the hydrogen pipeline is further improved to ensure that the gas pressure of the hydrogen pipeline is within a stable range.

[0058] Among them, the maximum safety threshold B≥K*A≥A.

[0059] Furthermore, the control module 1 also includes a hydrogen concentration detection sensor 17, which is electrically connected to the controller 11 and is disposed in the hydrogen pipeline. In the process of hydrogen, the hydrogen concentration will directly affect the safety of storage. The concentration of hydrogen is detected by setting the hydrogen concentration detection sensor 17. When the hydrogen concentration in the hydrogen pipeline cannot meet the storage requirements, the exhaust valve 31 is opened so that the hydrogen generated by electrolysis is directly discharged into the atmosphere through the hydrogen pipeline until the hydrogen concentration meets the requirements and the hydrogen is stored.

[0060] Furthermore, the control system for the hydrogen production and filling equipment also includes an alarm module 5, which is electrically connected to the control module 1. When the water level or water quality in the water storage tank does not meet the requirements, the gas pressure in the hydrogen pipeline is too high, or the temperature of the hydrogen storage device is too high, the controller 11 can control the alarm module 5 to alarm, thereby reminding the staff to intervene.

[0061] Furthermore, the control module 1 further includes a second liquid level sensor 15, which is disposed on the gas-liquid separator 81 and is electrically connected to the controller 11. By arranging the second liquid level sensor 15 to detect the water level of the gas-liquid separator 81, it is convenient for the controller 11 to monitor the working state of the gas pressure separator, and prevent the water level in the gas-liquid separator 81 from being too high, resulting in the inability to achieve gas-liquid separation, or the drain hole being in an open state for a long time, resulting in a large amount of hydrogen leakage.

[0062] Furthermore, the control system for the hydrogen production and filling equipment also includes a display screen, which is used to display the electrolysis working status in real time. When a fault occurs, it can be displayed on the display screen in time, so that the staff can understand the status of hydrogen preparation in time.

[0063] This embodiment also provides a control method, which uses the above hydrogen production and filling equipment control system to control the hydrogen production and filling equipment, including the following steps:

[0064] S100, when the hydrogen production and filling equipment is in operation, the control module 1 monitors the hydrogen concentration of the hydrogen pipeline, and if it meets the requirements, proceeds to the next step; if it does not meet the requirements, the power supply module 7 is cut off;

[0065] S200, the control module 1 monitors the pressure of the hydrogen pipeline, and if it is within the safety range, proceeds to the next step; if the pressure of the hydrogen pipeline is not less than the safety threshold A, the control module 1 obtains the current operating state of the pressure sensor 12 in the hydrogen pipeline;

[0066] S300, the control module 1 detects the water quantity and water quality of the water storage tank in the water supply module 2; determines whether the water quantity and water quality of the water storage tank in the water supply module 2 meet the requirements, if yes, proceeds to the next step; if not, the control alarm module alarms, requiring the user to change or increase or decrease water, and cuts off the power supply module 7;

[0067] S400, the control module 1 monitors the temperature inside the hydrogen storage device and the hydrogen production and filling equipment box in real time. When the temperature of the hydrogen storage device exceeds the set temperature, the heat dissipation module 6 is controlled to turn on the refrigerator 61 on the hydrogen storage device for cooling; when the temperature inside the hydrogen production and filling equipment box exceeds the set temperature, the fan 62 inside the hydrogen production and filling equipment box is controlled to dissipate heat, so that the temperature of the hydrogen storage device and the hydrogen production and filling equipment box is within the set temperature range.

[0068] Furthermore, step S200 further includes the following steps:

[0069] S201, when the current operating state of the pressure sensor 12 is valid, the control module 1 further obtains whether the power supply module 7 is successfully cut off. When the power supply module 7 fails to be cut off, the control module obtains that the pressure of the hydrogen pipeline is not less than K*A, where K is a constant, K≥1, and controls the pressure transmitter 32 to cut off the power supply module 7 again through the control module 1. If the power supply module 7 is successfully cut off, the electrolyzer 8 stops producing hydrogen, and the control module 1 further obtains whether the hydrogen storage device is full of hydrogen; if the power supply module 7 still fails to be cut off, the control module 1 opens the exhaust valve 31 to discharge the airflow in the hydrogen pipeline;

[0070] S202, when the current operating state of the pressure sensor is failure, the control module 1 further obtains that the pressure of the hydrogen pipeline is not less than K*A, the control module 1 controls the pressure switch 33 to cut off the power supply module 7, and opens the exhaust valve 31 to exhaust the airflow in the hydrogen pipeline;

[0071] S203, when the hydrogen pipeline pressure is greater than the maximum safety threshold value B, the control module 1 opens the safety valve 34 to release the hydrogen pressure of the hydrogen production and filling equipment to ensure that the gas pressure of the hydrogen pipeline is within a stable range.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A control system for hydrogen production and filling equipment, characterized in that: include: Control module (1); A water supply module (2), the water supply module (2) being electrically connected to the control module (1), and the water supply module (2) being in communication with the electrolytic cell (8); A heat dissipation module (6), the heat dissipation module (6) being electrically connected to the control module (1); A pressure regulating module (3), the pressure regulating module (3) being arranged on the hydrogen pipeline and used for regulating the pressure of the hydrogen pipeline; A power supply module (7), the power supply module (7) supplies power to at least one group of the electrolytic cells (8), and the power supply module (7) is electrically connected to the control module (1).

2. The control system for hydrogen production and filling equipment according to claim 1, characterized in that: The control module (1) comprises a controller (11) and a first liquid level sensor (13) and a temperature sensor (14) both electrically connected to the controller (11); the first liquid level sensor (13) is arranged in the water supply module (2); the temperature sensor (14) is arranged on the hydrogen storage device and in the hydrogen production and filling equipment box; the controller (11) is electrically connected to the water supply module (2), the heat dissipation module (6), the power supply module (7) and the pressure regulation module (3).

3. The control system for hydrogen production and filling equipment according to claim 2, characterized in that: The water supply module (2) comprises a water pump (21) and a water storage tank which are connected to each other, the water pump (21) is connected to the electrolytic cell (8), the water pump (21) is electrically connected to the controller (11), and the first liquid level sensor (13) is arranged on the water storage tank.

4. The control system for hydrogen production and filling equipment according to claim 3, characterized in that: The control module (1) further comprises a TDS sensor (16), wherein the TDS sensor (16) is arranged in the water storage tank, and the TDS sensor (16) is electrically connected to the controller (11).

5. The control system for hydrogen production and filling equipment according to claim 2, characterized in that: The heat dissipation module (6) comprises a refrigerator (61) and a fan (62); the refrigerator (61) is arranged on the hydrogen storage device, and the refrigerator (61) is electrically connected to the controller (11); the fan (62) is located in the hydrogen production and filling equipment box, and the fan (62) is electrically connected to the controller (11).

6. The control system for hydrogen production and filling equipment according to claim 2, characterized in that: The pressure regulating module (3) comprises a pressure switch (33), a pressure transmitter (32), a pressure sensor (12), an exhaust valve (31) and a safety valve (34); the pressure switch (33), the pressure transmitter (32), the pressure sensor (12) and the exhaust valve (31) are all electrically connected to the controller (11); the pressure switch (33) and the pressure transmitter (32) are all electrically connected to the power supply module (7); the pressure switch (33), the pressure transmitter (32), the pressure sensor (12) and the exhaust valve (31) are all connected to a hydrogen pipeline; the exhaust valve (31) and the safety valve (34) are located downstream of the pressure transmitter (32); and the safety valve (34) is a mechanical valve.

7. The control system for hydrogen production and filling equipment according to claim 2, characterized in that: The control module (1) further comprises a hydrogen concentration detection sensor (17), the hydrogen concentration detection sensor (17) being electrically connected to the controller (11), and the hydrogen concentration detection sensor (17) being arranged in the hydrogen pipeline.

8. The control system for hydrogen production and filling equipment according to claim 2, characterized in that: The control module (1) further comprises a second liquid level sensor (15), wherein the second liquid level sensor (15) is arranged on the gas-liquid separator (81), and the second liquid level sensor (15) is electrically connected to the controller (11).

9. A control method, characterized in that: The hydrogen production and filling equipment is controlled by using the control system for hydrogen production and filling equipment according to any one of claims 1 to 8, comprising the following steps: S100, when the hydrogen production and filling equipment is in operation, the control module (1) monitors the hydrogen concentration in the hydrogen pipeline, and if it meets the requirements, proceeds to the next step; if it does not meet the requirements, the power supply module (7) is cut off; S200, the control module (1) monitors the pressure of the hydrogen pipeline, and if it is within a safe range, proceeds to the next step; if the pressure of the hydrogen pipeline is not less than a safety threshold value A, the control module (1) obtains the current operating state of the pressure sensor (12) in the hydrogen pipeline; S300, the control module (1) detects the water quantity and water quality of the water storage tank in the water supply module (2); determines whether the water quantity and water quality of the water storage tank in the water supply module (2) meet the requirements, and if so, proceeds to the next step; if not, controls the alarm module to alarm, requiring the user to change or increase or decrease the water, and cuts off the power supply module (7); S400, the control module (1) monitors the temperature inside the hydrogen storage device and the hydrogen production and filling equipment box in real time. When the temperature of the hydrogen storage device exceeds a set temperature, the heat dissipation module (6) is controlled to turn on the refrigerator (61) on the hydrogen storage device to cool it down; when the temperature inside the hydrogen production and filling equipment box exceeds a set temperature, the fan (62) inside the hydrogen production and filling equipment box is controlled to dissipate heat, so that the temperature of the hydrogen storage device and the hydrogen production and filling equipment box is within a set temperature range.

10. The control method according to claim 9, characterized in that: The step S200 includes the following steps: S201, when the current operating state of the pressure sensor (12) is valid, the control module (1) further obtains whether the power supply module (7) is successfully cut off. When the power supply module (7) fails to be cut off, the control module (1) obtains that the pressure of the hydrogen pipeline is not less than K*A, where K is a constant, K≥1, and controls the pressure transmitter (32) through the control module (1) to cut off the power supply module (7) again. If the power supply module (7) is successfully cut off, the electrolyzer (8) stops producing hydrogen, and the control module (1) further obtains whether the hydrogen storage device is full of hydrogen; if the power supply module (7) still fails to be cut off, the control module (1) opens the exhaust valve (31) to discharge the airflow in the hydrogen pipeline; S202, when the current operating state of the pressure sensor (12) is failure, the control module (1) further obtains that the pressure of the hydrogen pipeline is not less than K*A, the control module (1) controls the pressure switch (33) to cut off the power supply module (7), and opens the exhaust valve (31) to exhaust the airflow in the hydrogen pipeline; S203: When the hydrogen pipeline pressure is greater than the maximum safety threshold value B, the control module (1) opens the safety valve (34) to release the hydrogen pressure of the hydrogen filling equipment to ensure that the gas pressure of the hydrogen pipeline is within a stable range.

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