Switchgear control device and method based on electrolytic dehumidification membrane with wide operating range

Abstract

The present invention relates to the technical field of moisture-proof and dehumidification apparatuses. Disclosed are a switchgear control device and method based on an electrolytic dehumidification membrane with a wide operating range. The device comprises a switchgear body, wherein an air exhaust flow channel, an electrolytic dehumidification assembly, a direct-current voltage regulator, a temperature sensor and a humidity sensor are provided inside the switchgear body; a single-chip microcomputer control system is provided outside the switchgear body; and a ventilation hole is provided in a side wall of the switchgear body, and is in communication with an outlet of the air exhaust flow channel. The electrolytic dehumidification assembly comprises an upper shell, a lower shell and a dehumidification membrane electrode pressed into the upper shell and the lower shell, wherein an air intake fan and an exhaust fan are connected to two sides of the upper shell and the lower shell. The dehumidification membrane electrode comprises a first mesh electrode, an electrolytic dehumidification membrane, and a second mesh electrode that are arranged in sequence. The mesh electrodes are sprayed with a composite coating of a catalyst and a hygroscopic inorganic filler. The material of the dehumidification membrane is a polymer doped with the hygroscopic inorganic filler and a thermally stable organic filler. The electrolytic dehumidification membrane has a wide operating range (-10-70℃, 20-100% RH), is suitable for extreme environments such as cold and heat, and has no problems such as icing, frosting, or damage caused by excessive cold and heat.

Description

Switch cabinet control device and method based on wide working interval electrolytic dehumidification film TECHNICAL FIELD

[0001] The present application relates to the technical field of moisture-proof dehumidification equipment, in particular to a switch cabinet control device and method based on a wide working interval electrolytic dehumidification film. BACKGROUND

[0002] A switch cabinet is an electrical device, and since it contains a large number of electrical components and sensors inside, the temperature and humidity in the cabinet have an important influence on its stability and insulation performance. The switch cabinet is directly exposed to the outdoor environment and is easily affected by moisture. When the humidity inside the switch cabinet is too high or the ambient temperature is lower than the dew point temperature of the air inside the cabinet, condensation or even water accumulation will occur, which can cause terminal rusting, instrument insulation degradation, internal contact short circuit, and other problems. The ambient temperature where the switch cabinet is located changes significantly, and can drop to -10°C in winter and rise to more than 60°C in summer. The humidity inside the cabinet is generally 60-100% in humid conditions and 20-60% in low-humidity conditions. When the outdoor temperature is low and the humidity is high, frost and ice will form on the internal walls. High temperature and high humidity can cause instrument rusting and overheating in the switch cabinet. In low-humidity environments, there is a need for preventive or local dehumidification in the switch cabinet. According to statistics, from 2016 to 2018, failures caused directly or indirectly by condensation and frost in electrical equipment such as box-type transformers, outdoor terminal boxes, and ring network cabinets accounted for 70%, seriously affecting the safety of the distribution network and normal power supply to users.

[0003] Currently, there are the following defects in switch cabinet moisture prevention: fully enclosed switch cabinets can prevent moisture from entering the cabinet, but they also make it difficult for internal moisture to be easily removed. Adding a heating pipe can increase the temperature inside the cabinet and thus reduce the relative humidity, but it can also cause the temperature inside the cabinet to rise, and when the heating pipe is turned on, the hot air rises, which can accelerate the condensation of moisture at the top. In addition, high temperatures inside the switch cabinet can also cause component aging, which can affect the lifespan of the components. Placing desiccants inside the switch cabinet can achieve obvious moisture-proof effects, but once the desiccants are saturated, the dehumidification effect is lost, and the replacement and maintenance costs are high. Rotary dehumidification equipment is complex, occupies a large area, and has high energy consumption, making it difficult to be practically applied. Semiconductor condensation dehumidification uses semiconductor cooling plates to condense moisture, which is then removed from the cabinet through a drain pipe. However, there is a risk of water leakage. When the outdoor temperature is high (40 degrees or above), it is difficult to dehumidify due to the difficulty of heat dissipation of the cooling plates. When the outdoor temperature is low (10 degrees or below), the water accumulation box will freeze, which not only prevents dehumidification but also can cause serious problems. Furthermore, the diameter of the semiconductor dehumidification drain pipe is generally 8-10 mm, which can damage the IP protection level of the switch cabinet and may even cause more serious accidents.

[0004] The proton exchange membrane-based electrolytic dehumidification technology is an electrochemical active humidity treatment method. By applying a low-voltage electric field on both sides of the electrolytic dehumidification membrane, water vapor on the anode side (i.e. inside the cabinet) undergoes electrolysis reaction, and the generated H + The water molecules carried by the electrolytic dehumidification membrane reach the environment side (i.e. outside the cabinet) and generate water vapor again, thereby removing the excess humidity in the cabinet. There is no condensation and no risk of icing during the electrolytic dehumidification process. The electrolytic dehumidification membrane is only about 1mm thick, small and compact, suitable for assembly in the form of a dehumidification module according to different target humidity and space requirements. The exhaust opening is small and easy to maintain. The dehumidification rate can be accurately adjusted by adjusting the applied electric field, which is convenient for control. In addition, the electrolytic dehumidification membrane dehumidification technology combined with the cabinet exhaust can reduce the humidity in the cabinet while removing excess heat, achieving the purpose of controlling the micro-environment of the switch cabinet.

[0005] Patent KR102100128B1 discloses a switch cabinet with electrolytic dehumidification function. Although the porous electrode carbon fiber is improved in this invention, the core of the electrolytic dehumidification membrane, i.e. the proton-conducting polymer, is not improved. The commonly used proton-conducting polymer is perfluorosulfonic acid (PFSA) polymer, which has problems such as easy damage at high temperature, low proton conductivity at low temperature or low humidity, and difficult electrochemical reaction, which limits its application range. Therefore, it is necessary to develop a wide working range electrolyte membrane that can work normally at-10~70℃, 20~100%RH, which is suitable for switch cabinets with large environmental changes.

[0006] SUMMARY

[0007] The purpose of the present application is to provide a switch cabinet control device and method based on a wide working range electrolytic dehumidification membrane, which solves the problems of the existing devices in the background art, such as difficulty in achieving moisture-proof effect, complex equipment, difficult maintenance, and the need for a drain pipe. In particular, it solves the problems of large temperature changes in outdoor environments (below zero to above 60℃), frosting in other dehumidification methods, and high temperature use, improves the moisture-proof performance of the switch cabinet in actual use, especially in extreme working conditions, optimizes the micro-environment in the switch cabinet, and reduces the failure rate of electrical components in the switch cabinet.

[0008] In order to achieve the above object, the application provides a switch cabinet control device based on a wide working range electrolytic dehumidification film, which comprises a switch cabinet body, an air exhaust flow channel, an electrolytic dehumidification assembly, a direct current voltage regulator connected with the electrolytic dehumidification assembly, a temperature sensor and a humidity sensor are arranged in the switch cabinet body, a single-chip microcomputer control system is arranged outside the switch cabinet body, and an air exchange hole is arranged on the side wall of the switch cabinet body and is connected with the outlet of the air exhaust flow channel; the electrolytic dehumidification assembly comprises an upper shell, a lower shell and a dehumidification film electrode compressed in and abutting against the upper shell and the lower shell, and air inlet fans and air exhaust fans are connected to the two sides of the upper shell and the lower shell respectively; the dehumidification film electrode comprises a first mesh electrode, an electrolytic dehumidification film and a second mesh electrode arranged in sequence.

[0009] The working temperature and humidity range of the wide working range electrolytic dehumidification film is -10-70 DEG C and 20%-100% RH, the electrolytic dehumidification film material is a proton-conducting polymer doped with hygroscopic inorganic fillers and heat-stable organic fillers, wherein the hygroscopic inorganic fillers account for 1-10% by mass percentage, the heat-stable organic fillers account for 1-30% by mass percentage, and the proton-conducting polymer accounts for 60-98% by mass percentage.

[0010] Preferably, the first mesh electrode and the second mesh electrode have the same structure and are both metal mesh structures sprayed with a composite coating; the composite coating comprises the following components by weight percentage: 50-89% catalyst particles, 10-40% proton-conducting polymer and 1-10% hygroscopic inorganic fillers; the metal mesh material is one of titanium, nickel, molybdenum, stainless steel and alloys thereof, the thickness of the metal mesh is 0.5-2 mm, and the mesh number is 5-20.

[0011] Preferably, the hygroscopic inorganic fillers are one of SiO2, ZrO2 and TiO2; the heat-stable organic fillers are low water-swellable fluorine-containing polymers or polymers containing ether groups, sulfone groups and ketone groups; and the proton-conducting polymer is one of perfluorosulfonic acid resin, sulfonated polysulfone and aryl polymer.

[0012] Preferably, the low water-swellable fluorine-containing polymer is one of polytetrafluoroethylene and polyvinylidene fluoride; and the polymer containing ether groups, sulfone groups and ketone groups is one of polyether ether ketone, sulfonated polysulfone, polyether sulfone and polybenzimidazole.

[0013] Preferably, the catalyst is one of iridium, ruthenium, platinum, titanium, molybdenum and alloy particles supported on a conductive carrier, the size of the catalyst particles is 4-50 nm, and the conductive carrier is one of titanium, tin, carbon and composite materials thereof.

[0014] Preferably, the wiring ends of the first mesh electrode and the second mesh electrode are connected with the direct current voltage regulator through wires.

[0015] Preferably, the direct current voltage regulator, the temperature sensor, the humidity sensor, the air inlet fan and the air outlet fan are electrically connected with the single-chip microcomputer control system.

[0016] The application also provides a switch cabinet control method based on the wide working range electrolytic dehumidification film.

[0017] (1) The temperature sensor and the humidity sensor respectively collect the temperature information and the humidity information inside the switch cabinet body and send them to the single-chip microcomputer control system.

[0018] (2) The air inlet fan or the air outlet fan is controlled to be turned on according to the collected temperature and humidity information.

[0019] When the single-chip microcomputer control system judges that the humidity inside the cabinet body is too high, the air inlet fan is controlled to be turned on; or when the single-chip microcomputer control system judges that the temperature inside the cabinet body is too high, the air outlet fan is controlled to be turned on; or when the single-chip microcomputer control system judges that both the temperature and the humidity inside the cabinet body are too high, the air inlet fan and the air outlet fan are controlled to be turned on.

[0020] Therefore, the application provides a switch cabinet control device and method based on the wide working range electrolytic dehumidification film, which has the following advantages.

[0021] (1) The electrolytic dehumidification film uses low-voltage direct current to drive water decomposition and transfer from the cabinet to the outside, without condensate water, without the need for a drain pipe, without safety hazards, and can also avoid the temperature rise in the switch cabinet body caused by heating and moisture, improve the moisture-proof performance of the switch cabinet, avoid the temperature in the cabinet being too high, and reduce the failure rate of electrical components inside the switch cabinet.

[0022] (2) The electrolytic dehumidification film provided by the application has a wide working range, can work at room temperature (20-40℃), can withstand a high temperature of up to 70℃, can withstand a low temperature of down to -10℃, and can normally work at a relative humidity of 20-100%, without damage, failure, frosting or water freezing problems.

[0023] (3) The device of the application has a simple structure, and the electrolytic dehumidification assembly is easy to control, so that the voltage can be adjusted by the single-chip microcomputer control system to accurately control the dehumidification effect, with fast response.

[0024] (4) The moisture-proof and temperature control functions of the switch cabinet are realized by the single-chip microcomputer control system, the temperature sensor and the humidity sensor monitor the temperature and humidity inside the cabinet body, when the temperature is too high, the single-chip microcomputer control system starts the air outlet fan and increases the power; when the humidity sensor monitors that the humidity is too large, the dehumidification device and the air inlet fan are started and the power is increased. Therefore, the application can accurately control the humidity inside the cabinet body, prevent condensation in the cabinet body, and ensure that the temperature inside the cabinet body will not be too high, thereby improving the stability and service life of the electrical components inside the switch cabinet.

[0025] The technical solutions of the present application are described in further detail below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a schematic diagram of the external structure of a switch cabinet control device based on a wide working range electrolytic dehumidification film according to the present application.

[0027] Fig. 2 is a schematic diagram of the internal structure of a switch cabinet control device based on a wide working range electrolytic dehumidification film according to the present application.

[0028] REFERENCE NUMERALS

[0029] 1, switch cabinet body; 2, DC voltage regulator; 3, temperature sensor; 4, humidity sensor; 5, single-chip microcomputer control system; 6, air exchange hole; 7, upper housing; 8, lower housing; 9, air intake fan; 10, air exhaust fan; 11, first mesh electrode; 12, electrolytic dehumidification film; 13, second mesh electrode. DETAILED DESCRIPTION

[0030] As shown in Figs. 1-2, the present application provides a switch cabinet control device based on a wide working range electrolytic dehumidification film, which includes a switch cabinet body 1. An air exhaust flow channel is formed inside the switch cabinet body 1, and an electrolytic dehumidification assembly, a DC voltage regulator 2, a temperature sensor 3, and a humidity sensor 4 are provided. A single-chip microcomputer control system 5 is provided outside the switch cabinet body 1. An air exchange hole 6 is formed in the side wall of the switch cabinet body 1 and is in communication with the outlet of the air exhaust flow channel. Multiple temperature sensors 3 and humidity sensors 4 can be provided inside the cabinet body for monitoring the temperature and humidity around the key electrical components inside the cabinet body. The DC voltage regulator 2, the temperature sensor 3, the humidity sensor 4, the air intake fan 9, and the air exhaust fan 10 are electrically connected to the single-chip microcomputer control system 5.

[0031] The electrolytic dehumidification assembly includes an upper housing 7, a lower housing 8, and a dehumidification film electrode compressed in and abutting against the upper housing 7 and the lower housing 8. The upper housing 7 and the lower housing 8 are respectively connected to the air intake fan 9 and the air exhaust fan 10 on their two sides. The humidity sensor 4 is provided near the air intake fan 9, and the temperature sensor 3 is provided near the air exhaust fan 10. The dehumidification film electrode includes a first mesh electrode 11, an electrolytic dehumidification film 12, and a second mesh electrode 13 arranged in sequence. The connection ends of the first mesh electrode 11 and the second mesh electrode 13 are connected to the DC voltage regulator 2 through wires.

[0032] In the present application, the electrolytic dehumidification film material includes the following components by weight percentage: 1-10% hygroscopic inorganic filler, 1-30% thermally stable organic filler, and 60-98% proton-conducting polymer.

[0033] In the present application, the hygroscopic inorganic filler is one of SiO2, ZrO2 and TiO2; the thermally stable organic filler is one of fluorine-containing polymer such as polytetrafluoroethylene or polyvinylidene fluoride, or one of ether-based, sulfone-based and ketone-based polymer such as polyether ether ketone, sulfonated polysulfone, polyether sulfone, polybenzimidazole; the proton-conducting polymer is one of perfluorosulfonic acid resin, sulfonated polysulfone and aryl polymer.

[0034] In the present application, the first and second mesh electrodes have the same structure, both being metal mesh structures sprayed with a composite coating of catalyst and inorganic hygroscopic filler; the composite coating comprises the following components in percentage by weight: 50-89% catalyst particles, 10-40% proton-conducting polymer and 1-10% hygroscopic inorganic filler; the metal mesh material is one of titanium, nickel, molybdenum, stainless steel and alloys thereof, the thickness of the metal mesh is 0.5-2 mm and the mesh number is 5-20.

[0035] In the present application, the catalyst is one of iridium, ruthenium, platinum, titanium, molybdenum and alloys thereof particles supported on a conductive carrier, the size of the catalyst particles is 4-50 nm, and the conductive carrier is one of titanium, tin, carbon or composite materials thereof. The method for supporting the catalyst on the conductive carrier includes electrospinning, in-situ synthesis and sol-gel method.

[0036] The present application also provides a switch cabinet control method based on a wide working range electrolytic dehumidification film, comprising the following steps:

[0037] (1) The temperature sensor and the humidity sensor respectively collect the temperature information and the humidity information inside the switch cabinet body and send them to the single-chip microcomputer control system;

[0038] (2) The inlet fan or the exhaust fan is controlled to be turned on according to the collected temperature and humidity information;

[0039] a. When the single-chip microcomputer control system determines that the temperature inside the cabinet body is normal and the humidity is too high according to the temperature and humidity information, the electrolytic dehumidification assembly is controlled to be started and the inlet fan is controlled to be turned on; if the humidity inside the cabinet body deviates greatly from the set value, the power of the electrolytic dehumidification assembly and the inlet fan is controlled to be increased;

[0040] b. When the single-chip microcomputer control system determines that the temperature inside the cabinet body is too high and the humidity is normal according to the temperature and humidity information, the exhaust fan in the exhaust flow channel is controlled to be turned on; if the temperature inside the cabinet body deviates greatly from the set value, the power of the exhaust fan is controlled to be increased;

[0041] c. When the single-chip microcomputer control system determines that both the temperature and the humidity inside the cabinet body are too high according to the temperature and humidity information, the electrolytic dehumidification assembly is controlled to be started and the inlet fan is controlled to be turned on, and the exhaust fan in the exhaust flow channel is controlled to be turned on; if the temperature and the humidity inside the cabinet body deviate greatly from the set value, the power of the electrolytic dehumidification assembly, the inlet fan and the exhaust fan is controlled to be increased.

[0042] The following detailed description of embodiments of the application is not intended to limit the scope of the application, as claimed, but merely to describe selected embodiments of the application. Based upon the embodiments of the application, all other embodiments falling within the scope of the application will be apparent to those of ordinary skill in the art and will be considered within the scope of the application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the following terms shall have the following meanings.

[0044] The specific connection of each part is made by using conventional means such as bolts, rivets, and welding in the prior art. The mechanical parts and equipment are of conventional types in the prior art. The circuit connection is made by using conventional connection means in the prior art, which will not be described in detail here.

[0045] According to the application, the above-mentioned electrolytic dehumidification film is used to carry out experiments to further understand the application. The scope of protection of the application is not limited by the following examples. The following examples are used to verify the experimental results of the application of the electrolytic dehumidification film provided by the application to the moisture-proof switch cabinet.

[0046] The electrolyte film in the following examples is a proton-conducting polymer doped with hygroscopic inorganic fillers and thermally stable organic fillers, specifically: 6% hygroscopic inorganic fillers, 30% thermally stable organic fillers, and 64% proton-conducting polymer. The mesh electrode is a metal mesh structure sprayed with a composite coating of catalyst and inorganic hygroscopic filler, and the metal mesh material is titanium with a thickness of 1 mm. The composite coating specifically includes: 70% catalyst particles, 25% proton-conducting polymer, and 5% hygroscopic inorganic fillers.

[0047] The proton-conducting polymer used is perfluorosulfonic acid resin, the hygroscopic inorganic filler is SiO2, and the thermally stable organic filler is polytetrafluoroethylene. The catalyst used is iridium oxide particles supported on a titanium mesh, and the catalyst particle size is 5 nm.

[0048] Example 1

[0049] The cabinet humidity prevention results of different electrolytic dehumidification film structures are verified in this embodiment, and the results are shown in Table 1. The dehumidification system applied to the cabinet humidity prevention is operated under the following conditions: the cabinet volume is 40L, and no components are placed in the cabinet. The cabinet temperature is 24℃, and the initial humidity in the cabinet is 65% during operation. The electrolytic dehumidification film is installed in the cabinet and connected to the external environment through the exhaust flow channel. In this embodiment, only the DC voltage regulator connected to the electrolytic dehumidification assembly is turned on, the operating voltage is 3V, and the air supply fan and the exhaust fan are not turned on.

[0050] Table 1 Summary of cabinet humidity prevention results of different electrolytic dehumidification film structures

[0051] [Corrected according to Rule 26 27.05.2025]

[0052] As can be seen from Table 1, the cabinet using the electrolytic dehumidification film proposed in the present application achieves good dehumidification and humidity prevention effect, and the electrolytic dehumidification film using the mesh electrode proposed in the present application has better humidity prevention effect. Embodiment

[0053] The cabinet humidity prevention results of different temperatures are verified in this embodiment, and the results are shown in Table 2. The electrolytic dehumidification film is installed in the cabinet and connected to the external environment through the exhaust flow channel. In this embodiment, only the DC voltage regulator connected to the electrolytic dehumidification assembly is turned on, the operating voltage is 3V, and the air supply fan and the exhaust fan are turned on. The electrolytic dehumidification film is operated under the following conditions: the relative humidity in the cabinet is 80%, and the operation time is 30 minutes. The dehumidification rate is calculated as follows:

[0054] [Corrected according to Rule 26 27.05.2025]

[0055] In the formula, m 除湿 is the dehumidification rate of the electrolytic dehumidification film, V is the size of the cabinet, and w is the absolute moisture content of air (g / kg of dry air); is the operation time; is the density of humid air.

[0056] [Corrected according to Rule 26 27.05.2025] Table 2 Summary of cabinet humidity prevention results of different temperatures

[0057] [Corrected according to Rule 26 27.05.2025]

[0058] As can be seen from Table 2, the dehumidification rate of the cabinet moisture-proof based on the wide working interval electrolytic dehumidification film in the application increases with the increase of the operating temperature, and the electrolytic dehumidification film achieves good cabinet moisture-proof effect at high and low temperatures, especially at operating conditions higher than 60 DEG C and lower than 0 DEG C, and still operates stably without overheating, freezing and frosting. Embodiment

[0059] This embodiment verifies the cabinet moisture-proof results under different control conditions, and the results are shown in Table 3. The system operates under the following conditions: the cabinet volume is 6L, the cabinet initial temperature is 30 DEG C, and the initial humidity in the cabinet is 60%. The electrolytic dehumidification film is installed in the cabinet and connected to the outside through the exhaust flow channel. In this embodiment, the DC voltage regulator and the single-chip microcomputer control system connected with the electrolytic dehumidification assembly are turned on, the operating voltage is 3V, and the supply fan and the exhaust fan are not turned on. The temperature and humidity changes in the cabinet during operation and the humidity control effect are recorded by the temperature and humidity sensor. When the sensor detects that the humidity in the cabinet exceeds the target value, the electrolytic dehumidification film is turned on by the single-chip microcomputer control system; when the sensor detects that the difference between the humidity in the cabinet and the target value increases, the power of the electrolytic dehumidification film and the power of the supply and exhaust fans are increased by the single-chip microcomputer control system.

[0060] Table 3 Summary of cabinet moisture-proof results under different control conditions

[0061] [Corrected according to Rule 26 27.05.2025]

[0062] As can be seen from Table 3, when the cabinet temperature decreases, the cabinet moisture-proof based on the electrolytic dehumidification film in the application can effectively avoid and solve the problem of the increase of the relative humidity in the cabinet, and the control is accurate and the humidity control precision is high.

[0063] Therefore, the application provides a switch cabinet control device and method based on a wide working interval electrolytic dehumidification film, which solves the problem that the semiconductor condensation dehumidification technology freezes and cannot be used when the outdoor environment is below zero degrees, improves the moisture-proof performance of the switch cabinet in actual use, avoids the temperature in the cabinet being too high, optimizes the micro-environment in the switch cabinet, and reduces the failure rate of the electrical elements in the switch cabinet.

[0064] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application rather than limit them, and although the application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the application can still be modified or replaced by equivalents, and these modifications or replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the application.

Claims

1. A switchgear control device based on a wide operating range electrolytic dehumidification film, characterized by: The switch cabinet body is internally provided with an air exhaust flow channel, an electrolytic dehumidification assembly, a direct current voltage regulator connected with the electrolytic dehumidification assembly, a temperature sensor and a humidity sensor, and the switch cabinet body is externally provided with a single-chip microcomputer control system, and the sidewall of the switch cabinet body is provided with an air exchange hole connected with the outlet of the air exhaust flow channel. The electrolytic dehumidification assembly comprises an upper shell, a lower shell and a dehumidification membrane electrode compressed in and abutting against the upper shell and the lower shell, and the upper shell and the lower shell are respectively connected with an air inlet fan and an air exhaust fan. The working temperature and humidity range of the electrolytic dehumidification membrane in the wide working range is -10-70℃ and 20%-100%RH; the material of the electrolytic dehumidification membrane is a proton-conducting polymer doped with hygroscopic inorganic fillers and heat-stable organic fillers, wherein the hygroscopic inorganic fillers account for 1-10% by mass percentage, the heat-stable organic fillers account for 1-30% by mass percentage, and the proton-conducting polymer accounts for 60-98% by mass percentage. The first mesh electrode and the second mesh electrode are of the same structure, and are both metal mesh structures sprayed with a catalyst and a hygroscopic inorganic filler composite coating; wherein the composite coating comprises the following components by mass percentage: 50-89% catalyst particles, 10-40% proton-conducting polymer and 1-10% hygroscopic inorganic fillers; the metal mesh material is one of titanium, nickel, molybdenum and their alloys or stainless steel, the thickness of the metal mesh is 0.5-2mm, and the mesh number is 5-20. The hygroscopic inorganic fillers are one of SiO2, ZrO2 and TiO2; the heat-stable organic fillers are low-water-swelling fluorine-containing polymers or polymers containing ether groups, sulfone groups and ketone groups; and the proton-conducting polymer is one of perfluorosulfonic acid resin, sulfonated polysulfone and aryl polymer.

2. The switchgear control device based on the wide operating range electrolytic dehumidification film according to claim 1, characterized in that: The fluorine-containing polymer is polytetrafluoroethylene or polyvinylidene fluoride; and the polymer containing ether groups, sulfone groups and ketone groups is one of polyether ether ketone, sulfonated polysulfone, polyether sulfone and polybenzimidazole.

3. The switchgear control device based on the wide operating range electrolytic dehumidification film according to claim 1, characterized in that: The catalyst is one of iridium, ruthenium, platinum, titanium, molybdenum and their alloy particles supported on a conductive carrier, the size of the catalyst particles is 4-50nm, and the conductive carrier is one of titanium, tin, carbon or their composite materials.

4. The switchgear control device based on the wide operating range electrolytic dehumidification film according to claim 1, characterized in that: The wiring ends of the first mesh electrode and the second mesh electrode are connected with the direct current voltage regulator through wires.

5. The switchgear control device based on the wide operating range electrolytic dehumidification film according to claim 1, characterized in that: The direct current voltage regulator, the temperature sensor, the humidity sensor, the air inlet fan and the air exhaust fan are electrically connected with the single-chip microcomputer control system.

6. The control method of a switchgear device based on a wide operating range electrolytic dehumidification film according to any one of claims 1 to 5, characterized in that, The method comprises the following steps: (1) The temperature sensor and the humidity sensor respectively collect temperature information and humidity information in the switch cabinet body and send them to the single-chip microcomputer control system; (2) The air inlet fan or the air exhaust fan is controlled to be turned on according to the collected temperature and humidity information; When the single-chip microcomputer control system judges that the humidity in the cabinet body is too high, the air inlet fan is controlled to be turned on; or when the single-chip microcomputer control system judges that the temperature in the cabinet body is too high, the air exhaust fan is controlled to be turned on; or when the single-chip microcomputer control system judges that both the temperature and the humidity in the cabinet body are too high, the air inlet fan and the air exhaust fan are controlled to be turned on.

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