Photovoltaic power generation power distribution cabinet

Abstract

The invention relates to the field of photovoltaic power generation, in particular to a photovoltaic power generation power distribution cabinet which comprises a cabinet body, the cabinet body is provided with a containing space used for installing electric appliance elements, and two opposite side faces of the cabinet body are provided with a first fan, a first filter plate, a second fan and a second filter plate. The rotation directions of the first fan and the second fan are opposite; a humidity detector is installed in the containing space, the humidity detector is electrically connected with the first fan and the second fan, and when the humidity in the containing space reaches a preset value, the humidity detector controls the first fan and the second fan to rotate reversely. By means of the mode, water vapor in air can be filtered through the first filter plate, meanwhile, water vapor in the second filter plate is blow-dried, and it is ensured that the humidity in the cabinet body is maintained within a reasonable range through reciprocating circulation.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of photovoltaic power generation, and in particular to a photovoltaic power generation distribution cabinet. Background Art

[0002] Photovoltaic power distribution cabinet is an important device for regulating the electric energy generated in the photovoltaic power generation system, and plays a vital role in the power transmission and distribution process of the power system.

[0003] Since the photovoltaic power generation distribution cabinet is a closed environment, the electrical equipment in the cabinet generates heat when it is working. Therefore, the photovoltaic power generation distribution cabinet is generally cooled by a radiator, and the cabinet is generally cooled by a fan in conjunction with the air inlet and outlet. However, the inventor of the present invention has found in practice that for photovoltaic power generation cabinets set in harsh outdoor environments, during the heat dissipation process, due to the condensation of dew caused by the rainy season or the temperature difference between day and night, when the air outside the photovoltaic power generation distribution cabinet enters the cabinet, the humidity of the external air is uncontrollable, which will cause excessively humid gas to enter the distribution cabinet, thereby affecting the electrical equipment in the distribution cabinet and affecting the life of the electrical equipment. Therefore, ensuring the temperature and dryness inside the photovoltaic power generation distribution cabinet is a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, an embodiment of the present invention provides a photovoltaic power generation and distribution cabinet, which can filter the water vapor in the air through the first filter plate while drying the water vapor in the second filter plate, thereby performing a reciprocating cycle to ensure that the humidity in the cabinet is maintained within a reasonable range.

[0005] In order to solve the above technical problems, a technical solution adopted in an embodiment of the present invention is: to provide a photovoltaic power distribution cabinet, the photovoltaic power distribution cabinet comprising: a cabinet body, the cabinet body having a storage space for installing electrical components, two opposite side panels of the cabinet body are provided with a first installation slot and a second installation slot connected to the storage space, a first filter plate and a first fan are arranged side by side in the first installation slot, and a second filter plate and a second fan are arranged side by side in the second installation slot; the first fan and the second fan are respectively used to drive the air flow in the storage space for heat dissipation; the first filter plate and the second filter plate are respectively used to absorb moisture in the air flow passing through the first fan and the second fan, and the first fan and the second fan rotate in opposite directions; a controller, a temperature detector and a humidity detector are installed in the storage space, and the controller is electrically connected to the humidity detector, the temperature detector, the first fan and the second fan respectively; when the temperature in the storage space reaches a first preset value, the controller controls the first fan and the second fan to rotate; when the humidity in the storage space reaches a second preset value, the controller controls the first fan and the second fan to start and reverse.

[0006] Optionally, the first mounting groove is located at an upper portion of a first side panel of the cabinet, and the second mounting groove is located at a lower portion of a second side panel of the cabinet.

[0007] Optionally, a first frame is installed on the first installation slot, the first frame has a first filter plate installation position and a first fan installation position, the first filter plate installation position is used to install the first filter plate, a first lifter is provided at the first filter plate installation position, and the first lifter is electrically connected to the controller; A second frame is installed on the second mounting groove, and the second frame has a second filter plate mounting position and a second fan mounting position, the second filter plate mounting position is used to install the second filter plate, and a second lifter is arranged at the second filter plate mounting position, and the second lifter is electrically connected to the controller.

[0008] Optionally, the first lifter includes a first electromagnetic slide rail and a first slider; the first electromagnetic slide rail is installed on the first filter plate installation position, the first slider is installed on the first electromagnetic slide rail, and the side surface of the first filter plate is connected to the first slider; The second lifter includes a second electromagnetic slide rail and a second slider; the second electromagnetic slide rail is installed on the second filter plate installation position, the second slider is installed on the second electromagnetic slide rail, and the side surface of the second filter plate is connected to the second slider.

[0009] Optionally, the first frame includes a first engaging portion and a first bearing portion, the first engaging portion is engaged with the first mounting groove, the first fan mounting position is arranged on the first bearing portion, and the first bearing portion is located outside the accommodating space; The second frame includes a second embedding portion and a second bearing portion, the second embedding portion is engaged with the second mounting groove, the second fan mounting position is arranged on the second bearing portion, and the second bearing portion is located outside the accommodating space.

[0010] Optionally, the first fan is installed in the middle of the first bearing portion, and the first filter plate installation position is arranged at the connection between the first fitting portion and the first bearing portion; The second fan is installed in the middle of the second bearing portion, and the second filter plate installation position is arranged at the connection between the second engaging portion and the second bearing portion.

[0011] Optionally, a first containing box is installed at the bottom of the first bearing portion, and the first bearing portion is in communication with the first containing box, so that the first lifter moves the first filter plate into the first containing box; A second containing box is installed at the bottom of the second bearing portion, and the second bearing portion is communicated with the second containing box, so that the second lifter moves the second filter plate into the second containing box.

[0012] Optionally, rain shields are provided on the tops of the first bearing portion and the second bearing portion.

[0013] Optionally, the first filter plate and the second filter plate are multi-layer hollow structures, and the first filter plate and the second filter plate each include at least two polyester fiber layers and a water-absorbent cotton layer, and the water-absorbent cotton layer is located between the two polyester fiber layers.

[0014] Optionally, both the first filter plate and the second filter plate are porous structures.

[0015] The embodiment of the present invention provides a photovoltaic power distribution cabinet, wherein the first fan and the second fan rotate in opposite directions, the first fan rotates forward, and the second fan rotates reversely, the first fan sucks air into the cabinet, and the second fan exhausts the air in the cabinet. In this process, the electrical components in the cabinet exchange heat with the air, and the hot air is then exhausted by the second fan. In the process of the first fan sucking air, the first filter plate filters the air, blocks and absorbs dust and water vapor in the air, so as to prevent the air humidity in the cabinet from being too high and condensing, and ensure the stable operation of the electrical components. In addition, when the humidity in the cabinet reaches a preset value: greater than 50%, it can be considered that the absorption capacity of the first filter plate for water vapor has reached saturation, and the humidity detector controls the first fan and the second fan to reverse. At this time, the first fan changes from suction to exhaust, and the second fan changes from exhaust to suction, and the second filter plate filters the air, and the hot air discharged by the first fan blows the first filter plate, accelerating the discharge of water vapor in the first filter plate, and thus reciprocating to ensure that the humidity in the cabinet is maintained within a reasonable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 A structural diagram of a power distribution cabinet in one embodiment of the present invention is shown; Figure 2 A partial structural schematic diagram of a power distribution cabinet in one embodiment of the present invention is shown; Figure 3 Shows Figure 2 A magnified view of the structure at center A; Figure 4 Shows Figure 2 A magnified view of the structure at B Figure 5 The structure diagram of the first filter plate or the second filter plate in one embodiment of the present invention is shown.

[0018] 1. Cabinet; 101. First mounting slot; 102. Second mounting slot; 103. First side panel; 104. Second side panel; 2. First frame; 201. First bearing part; 202. First interlocking part; 203. First storage box; 3. Second frame; 4. First fan; 5. First lifter; 501. First slider; 502. First electromagnetic slide rail; 6. First filter plate; 301. Second bearing part; 302. Second interlocking part; 303. Second storage box; 7. Polyester fiber layer; 8. Water-absorbing cotton layer; 9. Second fan; 10. Second filter plate; 11. Second lifter; 1101. Second slider; 1102. Second electromagnetic slide rail. DETAILED DESCRIPTION

[0019] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0020] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the invention belongs.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "plurality" means more than two, unless otherwise clearly and specifically defined.

[0023] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] refer to Figure 1 and Figure 2 , Figure 1 A power distribution cabinet in an embodiment of the present invention is shown. Figure 2 The schematic diagram of the partial structure of the power distribution cabinet in this embodiment is shown, and the power distribution cabinet comprises: a cabinet body 1, the cabinet body 1 has a containing space for installing electrical components, and two opposite side panels of the cabinet body 1 are provided with a first installation groove 101 and a second installation groove 102 connected with the containing space, and a first filter plate 6 and a first fan 4 are arranged side by side in the first installation groove 101, and a second filter plate 10 and a second fan 9 are arranged side by side in the second installation groove 102; the first fan 4 and the second fan 9 are respectively used to drive the air flow in the containing space to dissipate heat; the first filter plate 6 and the second filter plate 10 are arranged side by side in the second installation groove 102; The plate 10 is used to absorb moisture in the air flow passing through the first fan 4 and the second fan 9, respectively. The first fan 4 and the second fan 9 rotate in opposite directions. A controller, a temperature detector and a humidity detector are installed in the accommodating space. The controller is electrically connected to the humidity detector, the temperature detector, the first fan 4 and the second fan 9, respectively. When the temperature in the accommodating space reaches a preset value, the controller controls the first fan 4 and the second fan 9 to rotate. When the humidity in the accommodating space reaches a preset value, the controller controls the first fan 4 and the second fan 9 to start and reverse.

[0026] In this embodiment, the first fan 4 and the second fan 9 rotate in opposite directions. In one implementation, the first fan 4 rotates forward and the second fan 9 rotates reversely. The first fan 4 sucks air into the cabinet 1, and the second fan 9 discharges the air in the cabinet 1. In this process, the electrical components in the cabinet 1 exchange heat with the air, and the hot air is discharged by the second fan 9. In the process of the first fan 4 sucking air, the first filter plate 6 filters the air, blocks and absorbs dust and water vapor in the air, so as to prevent the air humidity in the cabinet 1 from being too high and condensing, and ensure the stable operation of the electrical components. The temperature and humidity in the cabinet 1 can be monitored by a humidity detector and a temperature detector installed in the cabinet 1, wherein, in the embodiment of the present invention, it can be based on the specific scene. At the same time, the humidity in the cabinet 1 can also reflect the filtering effect of the first filter plate 6 on the water vapor in the air, wherein the first preset value and the second preset value can be determined according to the installation environment and specific use of the cabinet 1, for example, when the reasonable humidity of the high-voltage distribution cabinet is 50% and the temperature is 40°. Therefore, it can be set that when the humidity in the cabinet 1 reaches the second preset value: greater than 50%, when the temperature reaches 40°, it can be considered that the absorption capacity of the first filter plate 6 for water vapor has reached saturation, and the controller controls the first fan 4 and the second fan 9 to reverse. At this time, the first fan 4 changes from suction to exhaust, and the second fan 9 changes from exhaust to suction. The air is filtered by the second filter plate 10, and the hot air discharged by the first fan 4 blows the first filter plate 6, accelerating the discharge of water vapor in the first filter plate 6, and thus repeating the cycle to ensure that the humidity in the cabinet 1 is maintained within a reasonable range and avoid the occurrence of condensation.

[0027] The installation positions of the first fan 4 and the second fan 9 on the side of the cabinet 1 can be determined according to the specific usage conditions. In one implementation, the main heat-generating electrical components in the power distribution cabinet are concentrated in the upper part of the cabinet 1, and the first installation slot 101 and the second installation slot 102 can be set together at the upper part of the side of the cabinet 1. At this time, the air path between the first fan 4 and the second fan 9 is a straight line, and the heat exchange speed of the electrical components in the upper part of the cabinet 1 is faster. In another implementation, high-heat-generating electrical components are set at the upper and lower parts of the power distribution cabinet, then the first installation slot 101 is located at the upper part of the first side panel 103 of the cabinet 1, and the second installation slot 102 is located at the lower part of the second side panel 104 of the cabinet 1. At this time, the air path between the first fan 4 and the second fan 9 is S-shaped, which can perform a large-scale heat exchange on the electrical components located at the upper and lower parts of the cabinet 1.

[0028] Among them, Figure 3In one embodiment of the present invention, a first frame body 2 is installed on the first mounting groove 101, and the first frame body 2 has a first filter plate 6 installed as a first fan mounting position, the first filter plate 6 mounting position is used to install the first filter plate 6, and a first lifter 5 is provided at the first filter plate 6 mounting position, and the first lifter 5 is electrically connected to the controller; a second frame body 3 is installed on the second mounting groove 102, and the second frame body 3 has a second filter plate 10 installed as a second fan 9 mounting position, the second filter plate 10 mounting position is used to install the second filter plate 10, and a second lifter 11 is provided at the second filter plate mounting position, and the second lifter 11 is electrically connected to the controller.

[0029] In the operation of the first fan 4 and the second fan 9, the exhaust end of the air does not need to be filtered, so the first filter plate 6 and the second filter plate 10 can be controlled by the first lifter 5 and the second lifter 11. When the first fan 4 or the second fan 9 is reversed, the first filter plate 6 or the second filter plate 10 is raised or lowered to improve the air outlet efficiency and the service life of the filter plate. In the reverse rotation (counterclockwise) of the fan is set to exhaust air, and the forward rotation (clockwise) of the fan is set to inhale air. When the first filter plate 6 and the second filter plate 10 are both in a dry state, instructions can be set for the controller. When the first fan 4 is reversed, the first lifter 5 is controlled to raise or lower the first filter plate 6 to move the first filter plate 6 outside the air path of the first fan 4. Similarly, when the first fan 4 is forward, the first lifter 5 is controlled to raise or lower the first filter plate 6 to move the first filter plate 6 into the air path of the first fan 4. In one implementation, the first lifter 5 includes a first electromagnetic slide rail 502 and a first slider 501; the first electromagnetic slide rail 502 is installed on the first filter plate installation position, the first slider 501 is installed on the first electromagnetic slide rail 502, and the side of the first filter plate 6 is connected to the first slider 501; the second lifter 11 includes a second electromagnetic slide rail 1102 and a second slider 1101; the second electromagnetic slide rail 1102 is installed on the second filter plate installation position, the second slider 1101 is installed on the second electromagnetic slide rail 1102, and the side of the second filter plate 10 is connected to the second slider 1101. In which, (for unified expression, the slider can represent the first slider 501 or the second slider 1101, and other names are the same) the slider can be connected to the upper part, middle part, and lower part of the side of the filter plate. In this implementation, the slider is connected to the upper part of the side of the filter plate, so that when the slider moves the filter plate out of the air path of the fan, its moving track is within the first frame 2, and the space in the first frame 2 can be used to the maximum extent. The first holding box 203 is installed at the bottom of the first bearing part 201, and the first bearing part 201 is connected with the first holding box 203, so that the first lifter 5 moves the first filter plate 6 into the first holding box 203; the second bearing part 301 is installed at the bottom of the second bearing part 301, and the second bearing part 301 is connected with the second holding box 303, so that the second lifter 11 moves the second filter plate 10 into the second holding box 303. The holding box protects the filter plate, and ensures that no foreign impurities fall on the filter plate when the filter plate does not participate in filtering. In another implementation, the initial rotation of the first fan 4 is set to counterclockwise (exhaust), and the initial rotation of the second fan 9 is set to clockwise (intake). When the temperature in the cabinet 11 does not reach 40° and the humidity does not reach 50%, the first fan 4 and the second fan 9 do not work, and the controller controls the first lifter 5 to move the first filter plate 6 into the first holding box 203, and controls the second filter plate 10 to move into the air path of the second fan 9.Since the first mounting groove 101 is located at the upper part of the first side panel 103, when the temperature in the cabinet 1 rises, the air in the cabinet rises due to the heat and flows through the first frame 2 to flow out, so that the second frame 3 becomes an air inlet, and at this time, the air naturally flowing into the cabinet 1 is filtered by the second filter plate 10. When the humidity in the cabinet 1 reaches 50%, it means that the second filter plate 10 is saturated, and the controller controls the first fan 4 and the second fan 9 to start and reverse. At this time, the second fan 9 rotates counterclockwise and the first fan 4 rotates clockwise, and the second fan 9 discharges the air with high humidity in the cabinet 1, and the controller controls the first lifter 5 to move the first filter plate 6 to the wind of the first fan 4, and the air sucked into the cabinet 1 by the first fan 4 is filtered by the first filter plate 6, thereby reducing the humidity in the cabinet 1, and the exhaust effect of the second fan 9 can accelerate the drying speed of the second filter plate 10. When the first filter plate 6 reaches the saturated state, the humidity in the cabinet 1 reaches the second preset value again, and the first fan 4 and the second fan 9 reverse again, filter the air sucked in by the second fan 9 through the second filter plate 10, and accelerate the drying speed of the first filter plate 6 through the first fan 4, and repeat the cycle.

[0030] It is worth noting that the controller can also be connected to a remote device to provide the user with feedback on the temperature and humidity inside the cabinet 1, and the user can remotely control the rotation speed and direction of the first fan 4, the second fan 9, and the movement of the first lifter 5 and the second lifter 11 to prevent the temperature and humidity inside the cabinet 1 from being too high to the greatest extent.

[0031] In one embodiment of the present invention, a rain shield is disposed on the top of each of the first bearing portion 201 and the second bearing portion 301. The rain shield can reduce the amount of rain, snow and other substances falling into the first frame 2 or the second frame 3, thereby increasing the service life of the internal components.

[0032] In one embodiment of the present invention, the first frame 2 includes a first engaging portion 202 and a first bearing portion 201, the first engaging portion 202 is engaged with the first mounting groove 101, the first fan mounting position is arranged on the first bearing portion 201, and the first bearing portion 201 is located outside the accommodating space; The second frame body 3 includes a second embedding portion 302 and a second bearing portion 301 . The second embedding portion 302 is engaged with the second mounting groove 102 . The second fan mounting position is arranged on the second bearing portion 301 . The second bearing portion 301 is located outside the accommodating space.

[0033] Among them, in this embodiment, each component is arranged outside the cabinet 1 and is connected to the cabinet 1 by snapping. When the first filter plate 6 or the second filter plate 10 needs to be replaced or other situations occur, the operation can be performed directly outside the cabinet 1 without opening the cabinet 1, which is convenient for installation and subsequent maintenance.

[0034] Among them, the installation positions of the first filter plate 6 and the second filter plate 10 in the first frame 2 and the second frame 3 can be set according to actual conditions. In one implementation, the first fan 4 is installed in the middle of the first bearing portion 201, and the first filter plate installation position is set at the connection between the first interlocking portion 202 and the first bearing portion 201; the second fan 9 is installed in the middle of the second bearing portion 301, and the second filter plate installation position is set at the connection between the second interlocking portion 302 and the second bearing portion 301. Among them, the first filter plate 6 and the second filter plate 10 are located in the first frame 2 and the second frame 3, which can avoid the loss of the filter plate in bad weather without affecting the air filtration. In another embodiment, the filter plate can also be installed at the end of the frame, which has the advantage that when the fan discharges air, the gas washes on the filter plate, which can speed up the drying speed of the filter plate.

[0035] Among them, Figure 4 In the embodiment of the invention, the first filter plate 6 and the second filter plate 10 each include two polyester fiber layers 7 and a water-absorbent cotton layer 8, and the water-absorbent cotton layer 8 is located between the two polyester fiber layers 7. Among them, polyester fiber has good filtering performance and water vapor resistance, and has certain support, while water-absorbent cotton has good water absorption, but poor support. Combining polyester fiber and water-absorbent cotton can effectively filter water vapor in the air. Among them, the structures of the first filter plate 6 and the second filter plate 10 can be diverse. In one implementation, the first filter plate 6 and the second filter plate 10 are both porous structures. When the fan blows the filter plate dry, the porous structure speeds up the drying speed of the filter plate and reduces the air resistance, which is beneficial to the air intake and exhaust of the fan.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A photovoltaic power generation and distribution cabinet, characterized in that: The photovoltaic power distribution cabinet comprises: a cabinet body (1), the cabinet body (1) having a storage space for installing electrical components, two opposite side panels of the cabinet body (1) being provided with a first installation slot (101) and a second installation slot (102) communicating with the storage space, a first filter plate (6) and a first fan (4) being arranged side by side in the first installation slot (101), and a second filter plate (10) and a second fan (9) being arranged side by side in the second installation slot (102); The first fan (4) and the second fan (9) are respectively used to drive the air flow in the accommodating space to dissipate heat; The first filter plate (6) and the second filter plate (10) are used to absorb moisture in the airflow passing through the first fan (4) and the second fan (9), respectively; the first fan (4) and the second fan (9) rotate in opposite directions; A controller, a temperature detector and a humidity detector are installed in the accommodating space, and the controller is electrically connected to the humidity detector, the temperature detector, the first fan (4) and the second fan (9) respectively; When the temperature in the accommodating space reaches a first preset value, the controller controls the first fan (4) and the second fan (9) to rotate; when the humidity in the accommodating space reaches a second preset value, the controller controls the first fan (4) and the second fan (9) to start and reverse.

2. The photovoltaic power generation and distribution cabinet according to claim 1, characterized in that: The first installation groove (101) is located at the upper part of a first side panel (103) of the cabinet (1), and the second installation groove (102) is located at the lower part of a second side panel (104) of the cabinet (1).

3. The photovoltaic power generation and distribution cabinet according to claim 2, characterized in that: A first frame (2) is mounted on the first mounting groove (101), the first frame (2) having a first filter plate (6) mounting position and a first fan (4) mounting position, the first filter plate mounting position being used to mount the first filter plate (6), a first lifter (5) being arranged at the first filter plate mounting position, the first lifter (5) being electrically connected to the controller; A second frame (3) is installed on the second mounting groove (102), the second frame (3) having a second filter plate (10) installation position and a second fan installation position, the second filter plate (10) installation position is used to install the second filter plate (10), and a second lifter (11) is arranged at the second filter plate installation position, and the second lifter (11) is electrically connected to the controller.

4. The photovoltaic power generation and distribution cabinet according to claim 3, characterized in that: The first lifter (5) comprises a first electromagnetic slide rail (502) and a first slider (501); the first electromagnetic slide rail (502) is mounted on the first filter plate mounting position, the first slider (501) is mounted on the first electromagnetic slide rail (502), and the side surface of the first filter plate (6) is connected to the first slider (501); The second lifter (11) comprises a second electromagnetic slide rail (1102) and a second slider (1101); the second electromagnetic slide rail (1102) is mounted on the second filter plate mounting position, the second slider (1101) is mounted on the second electromagnetic slide rail (1102), and the side surface of the second filter plate (10) is connected to the second slider (1101).

5. The photovoltaic power generation and distribution cabinet according to claim 4, characterized in that: The first frame (2) comprises a first engaging portion (202) and a first bearing portion (201), the first engaging portion (202) being engaged with the first mounting groove (101), the first fan mounting position being arranged on the first bearing portion (201), and the first bearing portion (201) being located outside the accommodating space; The second frame (3) comprises a second engaging portion (302) and a second bearing portion (301); the second engaging portion (302) is engaged with the second mounting groove (102); the second fan mounting position is arranged on the second bearing portion (301); and the second bearing portion (301) is located outside the accommodating space.

6. The photovoltaic power generation and distribution cabinet according to claim 5, characterized in that: The first fan (4) is mounted in the middle of the first bearing portion (201), and the first filter plate mounting position is arranged at the connection between the first engaging portion (202) and the first bearing portion (201); The second fan (9) is mounted in the middle of the second bearing portion (301), and the second filter plate (10) mounting position is arranged at the connection between the second engaging portion (302) and the second bearing portion (301).

7. The photovoltaic power generation and distribution cabinet according to claim 5, characterized in that: A first containing box (203) is installed at the bottom of the first bearing portion (201), and the first bearing portion (201) is in communication with the first containing box (203), so that the first lifter (5) moves the first filter plate (6) into the first containing box (203); A second containing box (303) is installed at the bottom of the second bearing portion (301), and the second bearing portion (301) is in communication with the second containing box (303), so that the second lifter (11) moves the second filter plate (10) into the second containing box (303).

8. The photovoltaic power generation and distribution cabinet according to claim 7, characterized in that: When the temperature in the cabinet (1) does not reach the first preset value, and the humidity does not reach the second preset value, the first fan (4) initially rotates counterclockwise to exhaust the air in the cabinet (1), and the second fan (9) initially rotates clockwise to draw in the air outside the cabinet (1), the first filter plate (6) is located in the first containing box (203), and the second filter plate (10) is located in the air path of the second fan (9).

9. The photovoltaic power generation and distribution cabinet according to claim 1, characterized in that: The first filter plate (6) and the second filter plate (10) are multi-layer hollow structures. The first filter plate (6) and the second filter plate (10) each comprise at least two polyester fiber layers (7) and a water-absorbent cotton layer (8), wherein the water-absorbent cotton layer (8) is located between the two polyester fiber layers (7).

10. The photovoltaic power generation and distribution cabinet according to claim 9, characterized in that: The first filter plate (6) and the second filter plate (10) are both porous structures.

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