Solar power generation combiner box

Abstract

The utility model discloses a kind of solar power generation confluence boxes, including box, mounting plate and counterweight pedestal, box is used to accomodate solar power generation confluence device, the bottom of box is equipped with opening, the edge of opening is equipped with multiple threaded holes, mounting plate covers the opening of the bottom of box, mounting plate is equipped with through-hole corresponding with threaded hole, bolt passes through through-hole and is connected with threaded hole with screw thread, to make mounting plate sealing fixed in the bottom of box, the top of counterweight pedestal is equipped with limit cavity, mounting plate is detachably embedded in limit cavity, when facing the working condition needing to move confluence box to carry out inspection or maintenance, staff removes mounting plate from counterweight pedestal limit cavity, then loosens and removes its connecting bolt with box, after easily separating two, box can be moved, after overhaul is completed, mounting plate and box are fixed again with bolt, then mounting plate is embedded back limit cavity, counterweight pedestal can provide stable support for box.

Description

Technical Field

[0001] This utility model relates to the field of solar photovoltaic power generation device technology, and in particular to a solar power generation combiner box. Background Technology

[0002] Solar power combiner units are a key component of photovoltaic (PV) power generation systems. They are primarily used to systematically combine the direct current (DC) generated by multiple PV modules and output it in parallel to improve system efficiency. This device is typically integrated into a solar power combiner box to provide electrical protection, monitoring, and management functions.

[0003] However, existing solar power combiner boxes also have drawbacks. One prominent issue is that these boxes are typically welded to the base. When inspection or maintenance requires moving the combiner box, workers need to use cutting tools to cut the welded area to disconnect it from the base. After each maintenance, the combiner box must be re-welded and fixed to the base. This process is complex and time-consuming, making it inconvenient for workers to inspect or maintain the system. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a solar power combiner box that solves the problem of the complex operation process requiring workers to use cutting tools to cut the welded parts between the solar power combiner box and the base before moving the solar power combiner box for inspection and maintenance.

[0005] A solar power combiner box according to an embodiment of the present invention includes a box body, a mounting plate, and a counterweight base. The box body is used to house a solar power combiner device. The bottom of the box body has an opening, and the edge of the opening has multiple threaded holes. The mounting plate covers the opening at the bottom of the box body. The mounting plate has through holes corresponding to the threaded holes. Bolts pass through the through holes and are threadedly connected to the threaded holes to seal and fix the mounting plate to the bottom of the box body. The top of the counterweight base has a limiting cavity, and the mounting plate is detachably embedded in the limiting cavity. The counterweight base is used to provide stable support.

[0006] According to one embodiment of the present utility model, at least the following beneficial effects are achieved:

[0007] A limiting cavity is carefully designed at the top of the counterweight base, within which the mounting plate is detachably embedded. When the combiner box needs to be moved for inspection or maintenance, workers can first remove the mounting plate from the limiting cavity of the counterweight base. Then, using common tools such as a screwdriver, they can loosen and remove the bolts connecting the mounting plate to the box, easily separating the mounting plate from the box and facilitating the movement of the box for the necessary work. After the inspection or maintenance is completed, the mounting plate is re-secured to the box using the bolts, and then the mounting plate is re-embedded into the limiting cavity. Throughout this process, the counterweight base, with its inherent structural characteristics, provides stable and reliable support for the mounting plate and the box, effectively improving the reliability and safety of the solar power combiner box during operation and providing a solid technical guarantee for its long-term, stable, and efficient operation.

[0008] According to some embodiments of this utility model, the solar power combiner box further includes a rotating column, a storage groove is provided on the bottom surface of the mounting plate, a limiting hole is provided on the top of the storage groove, a positioning groove is provided on the side wall of the counterweight base corresponding to the position of the storage groove, the rotating column passes through the limiting hole, a positioning block is connected to one end of the rotating column near the positioning groove, the rotating column is driven to rotate and drives the positioning block to rotate, the rotating column rotates to a first state, the positioning block is limited to the positioning groove, the mounting plate is fixed on the counterweight base, the rotating column rotates to a second state, the positioning block is limited to the storage groove, and the mounting plate is disconnected from the counterweight base.

[0009] According to some embodiments of this utility model, the solar power combiner box further includes a connecting rod and a traction plate. Each of the receiving slots is equipped with a rotating column and a positioning block. The top end of the rotating column extends to the outside of the receiving slot and is fixedly connected to the traction plate. The two traction plates on the same side are hinged together by the connecting rod. When the connecting rod rotates in a first direction, it synchronously drives the two rotating columns on the same side to rotate to the first state, so that the positioning block is engaged in the positioning slot. When the connecting rod rotates in a second direction, it synchronously drives the rotating column to rotate to the second state, so that the positioning block is disengaged from the positioning slot.

[0010] According to some embodiments of this utility model, the rotating column is connected to a toggle lever, and a first fixing plate and a second fixing plate are fixedly disposed on the mounting plate. A sleeve is disposed between the first fixing plate and the second fixing plate, and the toggle lever is slidably sleeved on the sleeve. A spring is sleeved on the sleeve. One end of the spring abuts against the toggle lever, and the other end abuts against the first fixing plate. When the toggle lever is actuated, the rotating column rotates to the second state, and the spring is compressed. When the toggle lever is released, the elastic force of the spring causes the rotating column to automatically return to the first state.

[0011] According to some embodiments of the present invention, a fixed seat is connected to the mounting plate, a fixed shaft is connected to the fixed seat, a limiting block passes through the fixed shaft, the limiting block is rotatably sleeved on the fixed shaft, and a limiting groove is formed on the limiting block; when the toggle lever is toggled to the first position and embedded in the limiting groove, the rotating column remains in the second state.

[0012] According to some embodiments of the present invention, the box array has multiple ventilation holes, a rain cover is provided on the outer wall of the box above the ventilation holes, and a moisture-proof board is detachably installed on the inner wall of the box inside the ventilation holes.

[0013] According to some embodiments of the present invention, a cooling fan is provided inside the box, and a heat dissipation hole is provided on the outer wall of the box opposite the air outlet of the cooling fan. A hydrophobic mesh plate is provided corresponding to the air inlet of the cooling fan, and the hydrophobic mesh plate includes a waterproof and breathable membrane.

[0014] According to some embodiments of the present invention, an access slot is provided on one side of the box, and a busbar inlet for connecting external cables is provided in the access slot. A sunshade is rotatably connected to the opening of the access slot.

[0015] According to some embodiments of the present invention, a protective cover is connected to the top of the box body. The protective cover includes an inverted V-shaped top plate and a vertical side plate extending downward from the edge of the inverted V-shaped top plate. A water-blocking cover is provided on the mounting plate, and the water-blocking cover covers the connecting rod and the fixing seat.

[0016] According to some embodiments of the present invention, the box body includes a box door and a box frame, the box door is hinged to the box frame, and a handle is connected to the box door.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of a solar power generation combiner box according to an embodiment of the present utility model;

[0020] Figure 2 This is another schematic diagram of a solar power generation combiner box according to an embodiment of the present utility model;

[0021] Figure 3 This is another schematic diagram of a solar power generation combiner box according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the mounting plate being locked onto the counterweight base according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the mounting plate according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the counterweight base according to an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the combination of the rotating column, lever, and fixed base in an embodiment of the present invention.

[0026] Figure Labels

[0027] 10. Box door; 11. Box frame; 12. Handle; 13. Rain cover; 14. Moisture-proof board; 15. Cooling fan; 16. Ventilation holes; 17. Drainage mesh plate;

[0028] 20. Mounting plate; 21. Through hole; 22. Storage slot; 23. Limiting hole;

[0029] 30. Counterweight base; 31. Limiting cavity; 32. Positioning groove;

[0030] 40. Rotating column; 41. Positioning block; 42. Traction plate; 43. Connecting rod; 44. Actuating rod; 45. Sleeve rod; 46. Spring; 47. First fixing plate; 48. Second fixing plate; 49. Fixing seat; 50. Limiting block; 51. Limiting groove;

[0031] 60. Inlet slot; 61. Sunshade; 62. Combustion inlet; 63. Inverted V-shaped top plate; 64. Vertical side plate; 65. Water barrier. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Please refer to Figures 1-7 An embodiment of the present invention provides a solar power combiner box, comprising a box body, a mounting plate 20, and a counterweight base 30. The box body is used to house a solar power combiner device. The bottom of the box body has an opening with multiple threaded holes along the edge of the opening. The mounting plate 20 covers the opening at the bottom of the box body. The mounting plate 20 has through holes 21 corresponding to the threaded holes. Bolts pass through the through holes 21 and are threadedly connected to the threaded holes to seal and fix the mounting plate 20 to the bottom of the box body. The top of the counterweight base 30 has a limiting cavity 31, and the mounting plate 20 is detachably embedded in the limiting cavity 31. The counterweight base 30 is used to provide stable support.

[0037] The counterweight base 30 of this utility model features a carefully designed limiting cavity 31 at its top, within which the mounting plate 20 is detachably embedded. When the combiner box needs to be moved for inspection or maintenance, workers can first remove the mounting plate 20 from the limiting cavity 31 of the counterweight base 30. Then, using a common screwdriver or other conventional tools, they can loosen and remove the bolts connecting the mounting plate 20 to the box, easily separating the mounting plate 20 from the box and facilitating the movement of the box for the necessary work. After the inspection or maintenance is completed, the mounting plate 20 is re-secured to the box using the bolts, and then the mounting plate 20 is re-embedded into the limiting cavity 31. During this process, the counterweight base 30, with its inherent structural characteristics, provides stable and reliable support for the mounting plate 20 and the box, effectively improving the reliability and safety of the solar power combiner box during operation and providing a solid technical guarantee for the long-term, stable, and efficient operation of the solar power combiner box.

[0038] According to some embodiments of this utility model, the solar power generation combiner box also includes a rotating column 40, a storage groove 22 is provided on the bottom surface of the mounting plate 20, a limiting hole 23 is provided on the top of the storage groove 22, and a positioning groove 32 is provided on the side wall of the counterweight base 30 corresponding to the position of the storage groove 22. The rotating column 40 passes through the limiting hole 23, and a positioning block 41 is connected to one end of the rotating column 40 near the positioning groove 32. The rotating column 40 is driven to rotate and drives the positioning block 41 to rotate. When the rotating column 40 rotates to the first state, the positioning block 41 is limited to the positioning groove 32, and the mounting plate 20 is fixed on the counterweight base 30. When the rotating column 40 rotates to the second state, the positioning block 41 is limited to the storage groove 22, and the mounting plate 20 is disconnected from the counterweight base 30.

[0039] According to some embodiments of this utility model, the solar power generation combiner box also includes a connecting rod 43 and a traction plate 42. Each storage slot 22 is equipped with a rotating column 40 and a positioning block 41. The top end of the rotating column 40 extends to the outside of the storage slot 22 and is fixedly connected to the traction plate 42. The two traction plates 42 on the same side are hinged by the connecting rod 43. When the connecting rod 43 rotates in the first direction, it synchronously drives the two rotating columns 40 on the same side to rotate to the first state, so that the positioning block 41 is inserted into the positioning slot 32. When the connecting rod 43 rotates in the second direction, it synchronously drives the rotating column 40 to rotate to the second state, so that the positioning block 41 is disengaged from the positioning slot 32.

[0040] According to some embodiments of this utility model, a rotating column 40 is connected to a toggle lever 44, and a first fixing plate 47 and a second fixing plate 48 are fixedly disposed on the mounting plate 20. A sleeve rod 45 is disposed between the first fixing plate 47 and the second fixing plate 48. The toggle lever 44 is slidably sleeved on the sleeve rod 45. A spring 46 is sleeved on the sleeve rod 45. One end of the spring 46 abuts against the toggle lever 44, and the other end abuts against the first fixing plate 47. When the toggle lever 44 is actuated, the rotating column 40 rotates to the second state, and the spring 46 is compressed. When the toggle lever 44 is released, the elastic force of the spring 46 causes the rotating column 40 to automatically return to the first state.

[0041] The operator manually moves the connecting rod 43 or the actuating rod 44 to compress the spring 46, causing the rotating column 40 to rotate forward. The positioning block 41 exits from the positioning groove 32 and rotates into the storage groove 22, disconnecting the mounting plate 20 from the counterweight base 30. The mounting plate 20 is then removed from the limiting cavity 31 of the counterweight base 30. Using a common screwdriver or other conventional tools, the bolts connecting the mounting plate 20 and the box are loosened and removed, easily separating the mounting plate 20 from the box and facilitating the movement of the box for work. After maintenance, the mounting plate 20 is re-secured to the box using bolts, and then the mounting plate 20 is inserted back into the limiting cavity 31. The spring 46 causes the rotating column 40 to rotate in the opposite direction to the first state. At this point, the positioning block 41 is fully engaged in the positioning groove 32, and the mounting plate 20 and the counterweight base 30 are tightly fixed, providing stable support for the box.

[0042] According to some embodiments of the present invention, a fixed seat 49 is connected to the mounting plate 20, a fixed shaft is connected to the fixed seat 49, a limiting block 50 passes through the fixed shaft, the limiting block 50 is rotatably sleeved on the fixed shaft, and a limiting groove 51 is formed on the limiting block 50; when the toggle rod 44 is toggled to the first position and embedded in the limiting groove 51, the rotating column 40 remains in the second state.

[0043] When it is necessary to inspect, maintain, or replace the electrical equipment inside the enclosure, the operator disconnects the mounting plate 20 from the counterweight base 30. Specifically, the operator manually moves the actuating lever 44, which moves within a pre-set sliding track on the mounting plate 20, causing the connected rotating column 40 to rotate. As the actuating lever 44 moves, the rotating column 40 gradually transitions from a first state to a second state, and the positioning block 41 gradually exits from the positioning groove 32 and enters the storage groove 22 on the bottom surface of the mounting plate 20. At this point, the connection between the mounting plate 20 and the counterweight base 30 begins to loosen. When the actuating lever 44 is moved to the first position, the positioning block 41 is fully inserted into the storage groove 22, precisely embedding the end of the actuating lever 44 into the limiting groove 51 of the limiting block 50. Since the limiting block 50 is rotatably mounted on the fixed shaft, when the actuating lever 44 is embedded in the limiting groove 51, the two engage with each other, forming a stable limiting structure. This limiting structure can prevent the lever 44 from resetting under the force of the spring 46 or other external forces, thereby keeping the rotating column 40 stably in the second state. The mounting plate 20 is separated from the counterweight base 30. After the mounting plate 20 is separated from the counterweight base 30, the box can be opened by removing the bolts.

[0044] According to some embodiments of the present invention, the box array has multiple ventilation holes, and a rain cover 13 is provided on the outer wall of the box above the ventilation holes.

[0045] According to some embodiments of the present invention, a cooling fan 15 is provided inside the box, and a heat dissipation hole 16 is provided on the outer wall of the box directly opposite the air outlet of the cooling fan 15.

[0046] When the solar power combiner box is operating, the electrical equipment inside continuously generates heat, raising the air temperature inside the box. Multiple ventilation holes in the box array provide channels for airflow, allowing cooler outside air to enter the box. When the temperature inside the box rises to a certain level due to high equipment load or excessively high ambient temperature, and natural ventilation alone is insufficient to meet the cooling requirements, the cooling fan 15 inside the box activates. Driven by electricity, the cooling fan 15's blades rotate at high speed, generating a powerful airflow. The airflow generated by the cooling fan 15 is blown out through the air outlet. Because the outer wall of the box has ventilation holes 16 directly opposite the air outlet of the cooling fan 15, the airflow is discharged outside the box along a preset direction through the ventilation holes 16. During the airflow process, the airflow speed inside the box is accelerated, allowing heat to be carried out of the box more quickly. Simultaneously, the airflow generated by the cooling fan 15 also creates a certain negative pressure inside the box, prompting more cool outside air to enter the box through the ventilation holes, further enhancing the cooling effect.

[0047] According to some embodiments of the present invention, a moisture-proof board 14 is detachably installed on the inner wall of the box and the inner side covering the ventilation holes, and a hydrophobic mesh plate 17 is provided on the outer wall of the box corresponding to the intake of the heat dissipation fan 15. The hydrophobic mesh plate 17 includes a waterproof and breathable membrane.

[0048] Under natural ventilation, outside air enters the cabinet through an array of ventilation holes. At this time, the removable moisture-proof board 14, covering the inside of the ventilation holes, begins to function. The moisture-proof board 14 is typically made of a material with hygroscopic properties, such as silica gel desiccant or activated carbon fiber. When air passes through the moisture-proof board 14, the moisture it carries is absorbed, reducing the amount of moisture entering the cabinet and providing initial moisture protection. When the temperature inside the cabinet rises to a certain level, the cooling fan 15 activates for forced ventilation and heat dissipation. The cooling fan 15 draws in air from the outside, and the hydrophobic mesh plate 17, positioned on the outer wall of the cabinet corresponding to the intake of the cooling fan 15, begins to operate. The waterproof and breathable membrane in the hydrophobic mesh plate 17 has unique properties; it is made of a polymer material with a specially treated surface that forms numerous tiny nano-sized pores. The diameter of these pores is much smaller than the diameter of a water droplet, but allows air molecules to pass through freely. When air carrying water vapor reaches the hydrophobic mesh plate 17, the water droplets cannot pass through the pores of the waterproof and breathable membrane due to surface tension and the hydrophobic properties of the membrane. They can only slide down the surface of the membrane or be blocked outside the membrane.

[0049] According to some embodiments of the present invention, an access slot 60 is provided on one side of the box, and a busbar inlet 62 for connecting external cables is provided in the access slot 60. A sunshade 61 is rotatably connected to the opening of the access slot 60.

[0050] The sunshade 61 fits tightly around the opening of the access slot 60, completely blocking the access slot 60 and forming a relatively enclosed space. This effectively prevents external sunlight, rain, dust, and debris from entering the access slot 60. Due to the protective effect of the sunshade 61, the inside of the access slot 60 can maintain a relatively dry, clean, and stable environment. This is very important for components such as cable connectors connected within the busbar port 62. A stable internal environment ensures stable electrical connection performance between the cable and the busbar port 62, guaranteeing normal power transmission.

[0051] According to some embodiments of the present invention, a protective cover is connected to the top of the box body. The protective cover includes an inverted V-shaped top plate 63 and a vertical side plate 64 extending downward from the edge of the inverted V-shaped top plate 63. A water baffle 65 is provided on the mounting plate 20. The water baffle 65 covers the connecting rod 43 and the fixing seat 49.

[0052] During rain and snowfall, rainwater and snow first come into contact with the inverted V-shaped top plate 63 of the protective cover. The inverted V-shape design allows rainwater and snow to quickly flow to both sides along the slope of the top plate. The vertical side plate 64 further guides the rainwater, limiting its spread to other parts of the enclosure. Rainwater and snow can only flow downwards along the vertical side plate 64, eventually moving away from the enclosure, preventing melted rainwater and snow from directly splashing onto the enclosure surface and seeping into the interior to damage electrical equipment. The water-retaining cover 65 on the mounting plate 20 completely covers the connecting rod 43 and the fixing seat 49. When rainwater splashes, the water-retaining cover 65 prevents rainwater from directly contacting the connecting rod 43 and the fixing seat 49, preventing them from rusting and corroding due to contact with rainwater.

[0053] According to some embodiments of the present invention, the box body includes a box door 10 and a box frame 11, the box door 10 is hinged to the box frame 11, and a handle 12 is connected to the box door 10.

[0054] When it is necessary to inspect, repair, replace parts, or perform other related operations on the inside of the solar power combiner box, the staff first moves the solar power combiner box to the inspection area, and then grasps the handle 12 on the box door 10. By applying external force through the handle 12, the friction that may exist between the box door 10 and the box frame 11 and the resistance of the hinge part are overcome, causing the box door 10 to rotate around the axis of hinge with the box frame 11, thereby opening the box door 10 and exposing the space inside the box frame 11, making it convenient for the staff to access the combiner device and other internal components.

[0055] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A solar power combiner box, characterized in that, include: A housing for storing a solar power generation combiner device, the bottom of which has an opening and the edge of which has multiple threaded holes; A mounting plate covers the opening at the bottom of the housing. The mounting plate has through holes corresponding to the threaded holes. Bolts pass through the through holes and are threadedly connected to the threaded holes to seal and fix the mounting plate to the bottom of the housing. The counterweight base has a limiting cavity at its top, and the mounting plate is detachably embedded in the limiting cavity. The counterweight base is used to provide stable support.

2. The solar power combiner box according to claim 1, characterized in that: It also includes a rotating column, a storage groove is provided on the bottom surface of the mounting plate, a limiting hole is provided on the top of the storage groove, a positioning groove is provided on the side wall of the counterweight base corresponding to the position of the storage groove, the rotating column passes through the limiting hole, and a positioning block is connected to one end of the rotating column near the positioning groove. The rotating column is driven to rotate and drives the positioning block to rotate. When the rotating column rotates to the first state, the positioning block is limited to the positioning groove and the mounting plate is fixed on the counterweight base. When the rotating column rotates to the second state, the positioning block is limited to the storage groove and the mounting plate is disconnected from the counterweight base.

3. The solar power combiner box according to claim 2, characterized in that: It also includes a connecting rod and a traction plate. Each of the storage slots is equipped with a rotating column and a positioning block. The top end of the rotating column extends to the outside of the storage slot and is fixedly connected to the traction plate. The two traction plates on the same side are hinged together by the connecting rod. When the connecting rod rotates in the first direction, it synchronously drives the two rotating columns on the same side to rotate to the first state, so that the positioning block is engaged in the positioning slot. When the connecting rod rotates in the second direction, it synchronously drives the rotating column to rotate to the second state, so that the positioning block is disengaged from the positioning slot.

4. The solar power combiner box according to claim 3, characterized in that: The rotating column is connected to a lever. A first fixing plate and a second fixing plate are fixedly installed on the mounting plate. A sleeve is provided between the first fixing plate and the second fixing plate. The lever is slidably sleeved on the sleeve. A spring is sleeved on the sleeve. One end of the spring abuts against the lever, and the other end abuts against the first fixing plate. When the lever is actuated, the rotating column rotates to the second state, and the spring is compressed. When the lever is released, the spring force causes the rotating column to automatically return to the first state.

5. The solar power combiner box according to claim 4, characterized in that: A fixed base is connected to the mounting plate, and a fixed shaft is connected to the fixed base. A limit block passes through the fixed shaft and is rotatably sleeved on the fixed shaft. A limit groove is formed on the limit block. When the toggle lever is moved to the first position and embedded in the limit groove, the rotating column remains in the second state.

6. The solar power combiner box according to claim 1, characterized in that: The enclosure array has multiple ventilation holes, and a rain cover is provided on the outer wall of the enclosure above the ventilation holes. A moisture-proof board is detachably installed on the inner wall of the enclosure inside the ventilation holes.

7. The solar power combiner box according to claim 1, characterized in that: The box is equipped with a cooling fan, and the outer wall of the box is provided with a heat dissipation hole at the position of the air blowing port of the cooling fan. A hydrophobic mesh plate is provided at the position of the air intake of the cooling fan, and the hydrophobic mesh plate includes a waterproof and breathable membrane.

8. The solar power combiner box according to claim 1, characterized in that: The enclosure has an access slot on one side, and the access slot has a busbar inlet for connecting external cables. A sunshade is rotatably connected to the opening of the access slot.

9. The solar power combiner box according to claim 5, characterized in that: A protective cover is connected to the top of the box. The protective cover includes an inverted V-shaped top plate and vertical side plates extending downward from the edge of the inverted V-shaped top plate. A water-blocking cover is provided on the mounting plate, and the water-blocking cover covers the connecting rod and the fixing seat.

10. The solar power combiner box according to claim 1, characterized in that: The box body includes a box door and a box frame, the box door is hinged to the box frame, and a handle is connected to the box door.

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