High-power multi-loop photovoltaic grid-connected box

Abstract

This application relates to the technical field of grid-connected boxes, and discloses a high-power multi-loop photovoltaic grid-connected box, including a box body with heat dissipation holes. A wind baffle is rotatably connected to the wall of the heat dissipation holes, and a wind baffle strip is slidably connected to the wall of the heat dissipation holes. The wind baffle strip can block the opening of the heat dissipation holes. A first magnet is provided on the wind baffle, and a second magnet is provided on the wind baffle strip. The first magnet repels the second magnet. A third magnet is provided on the wall of the heat dissipation holes, and the third magnet attracts the second magnet. When the wind force is large, the part of the heat dissipation hole that is blocked is smaller than when the wind force is small. This application adjusts the part of the heat dissipation hole that is blocked by the wind force, so that the wind entering the placement tank can be kept within a stable range, thereby reducing the possibility of vibration of the busbar or wires in the placement tank due to strong wind.

Description

Technical Field

[0001] This application relates to the technical field of grid-connected boxes, and in particular to a high-power multi-loop photovoltaic grid-connected box. Background Technology

[0002] A photovoltaic grid-connected box is a key power distribution device in a photovoltaic power generation system used to achieve safe and reliable grid connection between a photovoltaic power station and the power grid. It is located between the output end of the photovoltaic inverter and the grid inlet, and mainly plays the role of power conversion and transmission.

[0003] In related technologies, grid-connected boxes include a box body and a box door. The box door is rotatably connected to the box body, and the box body has multiple heat dissipation holes.

[0004] In rooftop distributed photovoltaic projects, if the inverter is placed at a high location such as the roof, the photovoltaic grid-connected box must also be installed at a high location such as the roof. Due to the high location of the roof, the wind force is strong. Strong winds blow into the box through the heat dissipation holes, and the high-speed airflow causes continuous vibration to the wires, busbars and other components inside the box, which may cause the connection parts to loosen, affecting the normal use of the grid-connected box. If the cross-sectional area of ​​the heat dissipation holes is reduced, the heat dissipation needs of the grid-connected box cannot be met when the wind force is small, affecting the normal use of the grid-connected box. Summary of the Invention

[0005] To address the issue that grid-connected boxes cannot adjust the size of their heat dissipation holes according to wind speed, this application provides a high-power multi-loop photovoltaic grid-connected box.

[0006] This application provides a high-power multi-loop photovoltaic grid-connected box, which adopts the following technical solution: A high-power multi-loop photovoltaic grid-connected box includes a box body with heat dissipation holes. A wind baffle is rotatably connected to the wall of each heat dissipation hole, and a wind baffle strip is slidably connected to the wall of each heat dissipation hole. The wind baffle strip can block the opening of the heat dissipation hole. A first magnet is provided on the wind baffle, and a second magnet is provided on the wind baffle strip. The first magnet repels the second magnet. A third magnet is provided on the wall of each heat dissipation hole, and the third magnet attracts the second magnet. When the wind causes the wind baffle to rotate to a horizontal position, the wind baffle strip blocks part of the heat dissipation hole, at which point the wind force is relatively large. When the wind causes the wind baffle to rotate to an inclined position or when the wind baffle is stationary, the wind baffle blocks part of the heat dissipation hole. The portion of the heat dissipation hole blocked when the wind force is large is smaller than the portion blocked when the wind force is small.

[0007] By adopting the above technical solution, when the wind is strong, the wind can push the wind deflector to rotate, allowing it to rotate towards the placement slot. The wind deflector rotates from a vertical to a horizontal position. At this time, the third magnet attracts the second magnet, and the wind deflector strip moves towards the wind deflector, thus blocking the heat dissipation holes. When the wind is weak, the wind cannot push the wind deflector to rotate, and the wind deflector remains vertical. At this time, the first magnet repels the second magnet, causing the wind deflector strip to move away from the wind deflector, resulting in a smaller portion of the heat dissipation holes being blocked. By adjusting the amount of heat dissipation holes blocked by the wind force, the portion blocked when the wind is strong is smaller than the portion blocked when the wind is weak. This keeps the air entering the placement slot within a stable range, reducing the possibility of vibration of the busbars or wires in the placement slot due to strong winds. This ensures that the busbars, wires, and other electrical components are stably positioned in the placement slot, thereby allowing the grid-connected box placed at high locations such as rooftops to operate stably.

[0008] Optionally, the housing is provided with a placement slot for placing power supply components, the heat dissipation hole is connected to the placement slot, and a limiting plate is provided on the wall of the heat dissipation hole, the limiting plate being located on the side of the baffle plate facing the placement slot.

[0009] By adopting the above technical solution, the limiting plate is located on the side of the windbreak plate facing the placement groove, which can restrict the wind from blowing directly into the placement groove, reducing the possibility of the wind directly blowing the electrical components. By moving the wind along the limiting plate, the wind speed can be reduced, avoiding the adverse effects caused by excessive wind speed.

[0010] Optionally, a paraffin temperature controller is provided in the placement slot, a driving component is provided at the heat dissipation hole, the limiting plate is slidably connected to the heat dissipation hole, and a groove for the limiting plate to be inserted is provided on the heat dissipation hole. The paraffin temperature controller drives the limiting plate to be inserted into the groove through the driving component. When the limiting plate is inserted into the groove, the air blows directly into the placement slot.

[0011] By adopting the above technical solution, since the grid connection box is set on the roof, the temperature will rise sharply at noon. At this time, the heat dissipation demand inside the box needs to be further increased. At this time, the paraffin thermostat is activated by heat, and the driving component drives the limiting plate to slide at the heat dissipation hole, so that the limiting plate can be inserted into the groove. This allows the limiting plate to not restrict the air from directly entering the placement slot, thereby allowing the air to quickly dissipate heat inside the placement slot to meet the needs of the rapidly rising temperature.

[0012] Optionally, the driving component includes a driving bar, which is rotatably connected to the heat dissipation hole. The wind deflector has a driving hole for the driving bar to be inserted. One end of the driving bar is located on the driving path of the paraffin thermostat, and the other end of the driving bar is inserted into the driving hole.

[0013] By adopting the above technical solution, when the paraffin thermostat is heated and activated, since one end of the drive bar is located on the drive path of the paraffin thermostat, the paraffin thermostat can drive the drive bar to move, realize the rotation of the drive bar, and allow the drive bar to move towards the groove, so that the drive bar can be smoothly inserted into the groove, and the drive bar will not restrict the air from blowing directly into the placement groove; by amplifying the stroke of the drive bar, the small stroke of the paraffin thermostat can be amplified to the larger stroke of the limit bar movement, so as to meet the needs of the limit bar movement.

[0014] Optionally, a linkage gear is rotatably connected inside the heat dissipation hole, the linkage gear is meshed with the wind deflector strip, and the linkage gear is meshed with the limiting plate.

[0015] By adopting the above technical solution, the wind deflector and the limiting plate are connected by a linkage gear. When the limiting plate moves towards the groove, the limiting plate can drive the wind deflector to move away from the groove through the linkage gear. This allows the wind deflector to reduce the portion of the heat dissipation holes that are blocked, so that in high-temperature conditions, a large amount of air can pass through the heat dissipation holes to meet the normal use of the grid-connected box.

[0016] Optionally, a support rod is provided at the heat dissipation hole, the linkage gear is slidably mounted on the support rod, the support rod is inclined towards the ground, and a linkage bar is provided on the linkage gear, the linkage bar being used to drive the linkage gear to move on the support rod.

[0017] By adopting the above technical solution, the operator drives the linkage gear to slide on the support rod through the linkage bar, so that the linkage gear is engaged with the limit plate, thereby allowing the movement of the limit plate to drive the wind deflector to move. The operator can choose whether to move the wind deflector according to the temperature. By tilting the support rod, the linkage gear can disengage from the limit plate when engagement is not required.

[0018] Optionally, the limiting plate is provided with a movable strip, and the movable strip has a movable inclined surface, which is used to drive the linkage strip to move; when the limiting plate is inserted into the groove, the linkage gear is engaged with the wind deflector; when the limiting plate is not inserted into the groove, the linkage gear is not engaged with the wind deflector.

[0019] By adopting the above technical solution, when the temperature rises, the limiting plate moves towards the groove and inserts into the groove. At this time, the moving inclined surface drives the linkage bar to move, so that the linkage gear can mesh with the wind deflector. This allows the limiting plate to drive the wind deflector to move through the linkage gear, so that the wind deflector can move as the temperature rises, allowing more air to be blown into the placement groove.

[0020] Optionally, a flow groove is provided on the wind baffle, and a flow ramp is provided on the flow groove; when the wind baffle is in a vertical state, the distance between the flow ramp and the placement groove gradually increases in the vertically downward direction.

[0021] By adopting the above technical solution, when the wind blows the wind deflector, the wind can blow along the flow slope. When the wind deflector is in a vertical state, the wind can flow along the flow slope toward the ground, so that the wind blown out of the flow channel and the wind of the limiting plate interfere with each other, and avoid the wind flowing too fast at the heat dissipation hole.

[0022] In summary, this application includes at least one of the following beneficial technical effects: When the wind is strong, it can push the wind deflector to rotate, turning it towards the placement slot. The wind deflector rotates from a vertical to a horizontal position. At this time, the third magnet attracts the second magnet, causing the wind deflector strip to move towards the wind deflector, thus blocking the heat dissipation holes. When the wind is weak, it cannot push the wind deflector to rotate, and the wind deflector remains vertical. The first magnet repels the second magnet, causing the wind deflector strip to move away from the wind deflector, thus reducing the amount of heat dissipation holes blocked. By adjusting the amount of heat dissipation holes blocked by the wind force, the amount blocked during strong winds is smaller than during weak winds. This keeps the airflow into the placement slot within a stable range, reducing the possibility of vibration of the busbars or wires inside the placement slot due to strong winds. This ensures that the busbars and wires, as well as other electrical components, remain stably positioned within the placement slot, allowing the grid-connected box placed at high locations such as rooftops to operate stably.

[0023] The wind deflector and the limiting plate are connected by a linkage gear. When the limiting plate moves toward the groove, the limiting plate can drive the wind deflector to move away from the groove through the linkage gear. This reduces the amount of heat dissipation holes blocked by the wind deflector, allowing a large amount of air to pass through the heat dissipation holes under high temperature conditions to meet the normal use of the grid-connected box. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 It is along Figure 1 A partial sectional view of line AA in the middle; Figure 3 This is a schematic diagram of the structure of the limiting plate in the embodiments of this application; Figure 4 This is a schematic diagram highlighting the linkage gear in the embodiments of this application; Figure 5This is a schematic diagram highlighting the second tooth block in an embodiment of this application.

[0025] Reference numerals: 1. Box body; 11. Placement slot; 12. Heat dissipation hole; 121. Rotating shaft; 122. Wind baffle; 123. Flow channel; 124. Flow ramp; 13. Sliding channel; 131. Wind baffle strip; 14. First magnet; 141. Second magnet; 142. Third magnet; 15. Limiting plate; 151. Groove; 152. Flow hole; 153. Drive hole; 16. Paraffin wax thermostat; 161. Drive component; 17. Support rod; 171. Linkage gear; 172. First tooth block; 173. Second tooth block; 174. Moving strip; 175. Linkage strip; 176. Moving ramp; 2. Box door. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0027] This embodiment discloses a high-power multi-loop photovoltaic grid-connected box. (Refer to...) Figure 1 A high-power multi-loop photovoltaic grid-connected box includes a box body 1 and a box door 2, with the box door 2 rotatably connected to the box body 1.

[0028] Reference Figure 2 The enclosure 1 has a placement slot 11 for electrical components, which is installed in the slot 11 to meet the high power requirements of the grid-connected box. A heat dissipation hole 12 is provided on the side of the enclosure 1, connecting to the placement slot 11. A rotating shaft 121 is fixedly connected to the wall of the heat dissipation hole 12, and a baffle plate 122 is rotatably connected to the rotating shaft 121. The baffle plate 122 can rotate towards the placement slot 11, allowing it to rotate from a vertical to a horizontal position.

[0029] Reference Figure 2 A flow groove 123 is formed on the surface of the baffle plate 122 away from the placement groove 11, and the flow groove 123 extends along the length of the baffle plate 122. A flow ramp 124 is formed on the groove wall of the flow groove 123 away from the rotating shaft 121. When the baffle plate 122 is in a vertical state, the distance between the flow ramp 124 and the placement groove 11 gradually increases in the vertically downward direction. When the baffle plate 122 is in a horizontal state, the wind can blow along the flow ramp 124 towards the ground, thereby turbulenting the air in the heat dissipation hole 12 and preventing the wind from blowing directly into the placement groove 11.

[0030] Reference Figure 2A sliding groove 13 is formed on the wall of the heat dissipation hole 12, extending vertically. A baffle strip 131 is slidably connected within the sliding groove 13. The baffle strip 131 can block the opening of the heat dissipation hole 12, and its length is greater than that of the baffle plate 122. A first magnet 14 is fixedly connected to the end face of the baffle plate 122 away from the rotating shaft 121, a second magnet 141 is fixedly connected to the end face of the baffle strip 131 away from the ground, and a third magnet 142 is fixedly connected to the wall of the heat dissipation hole 12 away from the sliding groove 13. The first magnet 14 repels the second magnet 141, and the third magnet 142 attracts the second magnet 141. The magnetic force of the third magnet 142 on the second magnet 141 is less than that of the first magnet 14 on the second magnet 141.

[0031] Reference Figure 2 When the wind is not strong, the wind is unlikely to push the wind deflector 122 directly, so the wind deflector 122 is in a vertical state, or the wind pushes the wind deflector 122 at a small angle, so the wind deflector 122 is in a tilted state. At this time, the magnetic force of the first magnet 14 on the second magnet 141 is greater than the magnetic force of the third magnet on the second magnet 141, so that the wind deflector strip 131 slides towards the bottom wall of the sliding groove 13, so that the wind deflector strip 131 does not block the opening of the heat dissipation hole 12 too much.

[0032] Reference Figure 2 When the wind is strong, the wind directly pushes the wind deflector 122 to rotate, causing it to rotate from a vertical position to a horizontal position. At this time, the magnetic force of the third magnet 142 on the second magnet 141 is greater than that of the first magnet 14 on the second magnet 141, allowing the wind deflector strip 131 to slide away from the bottom wall of the sliding groove 13. This allows the wind deflector strip 131 to block the opening of the heat dissipation hole 12. Furthermore, the portion of the heat dissipation hole 12 jointly blocked by the wind deflector strip 131 and the wind deflector 122 at this time is smaller than the portion of the heat dissipation hole 12 jointly blocked by the wind deflector strip 131 and the wind deflector 122 when the wind is weak.

[0033] Reference Figure 2 A limiting plate 15 is slidably connected to the wall of the heat dissipation hole 12. The limiting plate 15 can slide vertically and is L-shaped. The limiting plate 15 is located on the side of the baffle plate 122 near the placement groove 11, that is, the limiting plate 15 blocks the heat dissipation hole 12. A receiving groove for the limiting plate 15 to be inserted is opened on the wall of the heat dissipation hole 12 near the ground, and the receiving groove is connected to the placement groove 11. A receiving plate is fixedly connected to the wall of the heat dissipation hole 12 near the ground, and the receiving plate abuts against the limiting plate 15.

[0034] Reference Figure 2The placement groove 11 has a flow hole 152 on its wall, which connects to the heat dissipation hole 12. The flow hole 152 allows air to flow between the heat dissipation hole 12 and the placement groove 11. The flow hole 152 has a groove 151 on its wall away from the ground, which allows the limiting plate 15 to be inserted.

[0035] Reference Figure 2 When the limiting plate 15 is inserted into the groove 151, the area of ​​the limiting plate 15 blocking the heat dissipation hole 12 gradually decreases, that is, the limiting plate 15 gradually reduces the area blocking the heat dissipation hole 12, and air can pass directly through the space between the receiving plate and the limiting plate 15. When the limiting plate 15 is not inserted into the groove 151, the limiting plate 15 is on the side of the baffle plate 122 facing the placement groove 11, so that the limiting plate 15 restricts the air from flowing directly towards the placement groove 11, and the air flows sequentially from the heat dissipation hole 12, the flow hole 152 to the placement groove 11.

[0036] Reference Figure 2 A paraffin thermostat 16 is fixedly connected to the wall of the placement groove 11. When the temperature reaches 65 degrees Celsius, the paraffin thermostat 16 is triggered. A drive component 161 is provided inside the wall of the heat dissipation hole 12. The drive component 161 is used to drive the limiting plate 15 to move, so that the limiting plate 15 moves in the direction of the groove 151.

[0037] Reference Figure 2 and Figure 3 The driving component 161 includes a driving bar rotatably connected to the wall of the heat dissipation hole 12, with one end of the driving bar located in the receiving groove and the other end located in the placement groove 11. A driving hole 153 for inserting the driving bar is provided on the surface of the limiting plate 15, extending vertically. The end of the driving bar in the receiving groove is inserted into the driving hole 153, and the end of the driving bar in the placement groove 11 is located on the driving path of the paraffin thermostat 16.

[0038] Reference Figure 2 and Figure 3 When the paraffin thermostat 16 senses 65 degrees Celsius, the paraffin thermostat 16 can push the drive bar to rotate, so that the drive bar drives the limiting plate 15 to move through the hole wall of the drive hole 153, so that the limiting plate 15 moves towards the groove 151, and the limiting plate 15 can be inserted into the groove 151.

[0039] Reference Figure 4 A support rod 17 is fixedly connected to the wall of the heat dissipation hole 12, and the support rod 17 is inclined towards the ground. A linkage gear 171 is slidably connected to the support rod 17, and the linkage gear 171 can slide along the support rod 17 towards the ground.

[0040] Reference Figure 4 and Figure 5Multiple first toothed blocks 172 are fixedly connected to the surface of the limiting plate 15 facing the support rod 17, and the multiple first toothed blocks 172 are arranged in an array along the vertical direction. Multiple second toothed blocks 173 are fixedly connected to the surface of the wind deflector 131 facing the support rod 17, and the multiple second toothed blocks 173 are arranged in an array along the vertical direction.

[0041] Reference Figure 4 and Figure 5 When the linkage gear 171 is located on the side of the support rod 17 away from the ground, one side of the linkage gear 171 can mesh with the first tooth block 172, and the other side of the linkage gear 171 can mesh with the second tooth block 173, so that the limiting plate 15 can drive the wind deflector 131 to move through the linkage gear 171.

[0042] Reference Figure 4 and Figure 5 When the linkage gear 171 is located on the side of the support rod 17 that is close to the ground, the linkage gear 171 does not abut against the first tooth block 172 and the second tooth block 173, that is, the movement of the limit plate 15 will not drive the movement of the wind deflector 131.

[0043] Reference Figure 4 A movable strip 174 is fixedly connected to the surface of the limiting plate 15 facing the support rod 17. The movable strip 174 is located on the side of the linkage strip 175 closest to the ground. The linkage strip 175 is fixedly connected to the linkage gear 171. A movable inclined surface 176 is formed on the surface of the movable strip 174 away from the ground. The distance between the movable inclined surface 176 and the ground gradually decreases along the direction from the lower part of the support rod 17 to the upper part of the support rod 17. The linkage strip 175 is located on the moving path of the movable inclined surface 176.

[0044] Reference Figure 4 When the limiting plate 15 is raised, the limiting plate 15 drives the linkage bar 175 to move through the moving inclined surface 176 of the moving bar 174, so that the linkage gear 171 slides along the inclined direction of the support rod 17, so that the linkage gear 171 can smoothly mesh and connect to the limiting plate 15 and the wind deflector 131, so that the limiting plate 15 drives the wind deflector 131 to move through the linkage gear 171.

[0045] The implementation principle of a high-power multi-loop photovoltaic grid-connected box in this application embodiment is as follows: When there is a strong wind, the strong wind causes the wind deflector 122 to rotate, so that the wind deflector 122 rotates from a vertical state to a horizontal state. The third magnet 142 attracts the second magnet 141, so that the wind deflector strip 131 is raised, so that the wind deflector strip 131 can smoothly block the heat dissipation hole 12.

[0046] When there is a light wind, the wind deflector 122 is in a vertical or tilted state. The first magnet 14 repels the second magnet 141, preventing the wind deflector strip 131 from rising. This allows the wind deflector 122 to block the heat dissipation hole 12. At this time, the area of ​​the wind deflector 122 and the wind deflector strip 131 blocking the heat dissipation hole 12 is smaller than the area of ​​the wind deflector 122 and the wind deflector strip 131 blocking the heat dissipation hole 12 under strong wind conditions.

[0047] When the temperature inside the placement slot 11 is high, the paraffin temperature controller 16 drives one end of the drive bar to rotate, allowing the other end of the drive bar to tilt up. This allows the drive bar to smoothly drive the limiting plate 15 into the groove 151. At this time, the limiting plate 15 drives the linkage gear 171 to slide through the moving bar 174 and the linkage bar 175, so that the linkage gear 171 meshes with the limiting plate 15 and the wind deflector 131. As the limiting plate 15 continues to rise, it can drive the wind deflector 131 to fall, preventing the wind deflector 131 from blocking the heat dissipation hole 12 in case of strong winds, thus further enhancing the heat dissipation effect.

[0048] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0049] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A high-power multi-loop photovoltaic grid-connected box, comprising a box body (1), wherein the box body (1) is provided with heat dissipation holes (12), characterized in that: A baffle plate (122) is rotatably connected to the wall of the heat dissipation hole (12), and a baffle strip (131) is slidably connected to the wall of the heat dissipation hole (12). The baffle strip (131) can block the opening of the heat dissipation hole (12). A first magnet (14) is provided on the baffle plate (122), and a second magnet (141) is provided on the baffle strip (131). The first magnet (14) repels the second magnet (141). A third magnet (142) is provided on the wall of the heat dissipation hole (12). The third magnet (142) attracts the second magnet (141); when the wind drives the wind deflector (122) to rotate to a horizontal state, the wind deflector strip (131) blocks part of the heat dissipation hole (12), at which time the wind force is relatively large; when the wind drives the wind deflector (122) to rotate to an inclined state or when the wind deflector (122) is stationary, the wind deflector (122) blocks part of the heat dissipation hole (12), and when the wind force is relatively large, the part of the heat dissipation hole (12) blocked is smaller than the part of the heat dissipation hole (12) blocked when the wind force is relatively small.

2. The high-power multi-loop photovoltaic grid-connected box according to claim 1, characterized in that: The housing (1) has a placement slot (11) for placing power supply components. The heat dissipation hole (12) is connected to the placement slot (11). A limiting plate (15) is provided on the hole wall of the heat dissipation hole (12). The limiting plate (15) is located on the side of the baffle plate (122) facing the placement slot (11).

3. A high-power multi-loop photovoltaic grid-connected box according to claim 2, characterized in that: A paraffin thermostat (16) is provided in the placement slot (11), and a driving component (161) is provided at the heat dissipation hole (12). The limiting plate (15) is slidably connected to the heat dissipation hole (12). A groove (151) for the limiting plate (15) to be inserted is provided on the heat dissipation hole (12). The paraffin thermostat (16) drives the limiting plate (15) to be inserted into the groove (151) through the driving component (161). When the limiting plate (15) is inserted into the groove (151), the air blows directly towards the placement slot (11).

4. A high-power multi-loop photovoltaic grid-connected box according to claim 3, characterized in that: The drive component (161) includes a drive bar, which is rotatably connected to the heat dissipation hole (12). The wind deflector (131) has a drive hole (153) for inserting the drive bar. One end of the drive bar is located on the drive path of the paraffin thermostat (16), and the other end of the drive bar is inserted into the drive hole (153).

5. A high-power multi-loop photovoltaic grid-connected box according to claim 3, characterized in that: A linkage gear (171) is rotatably connected inside the heat dissipation hole (12). The linkage gear (171) is meshed with the wind deflector strip (131) and the linkage gear (171) is meshed with the limiting plate (15).

6. A high-power multi-loop photovoltaic grid-connected box according to claim 5, characterized in that: A support rod (17) is provided at the heat dissipation hole (12), and the linkage gear (171) is slidably disposed on the support rod (17). The support rod (17) is inclined toward the ground. A linkage bar (175) is provided on the linkage gear (171), and the linkage bar (175) is used to drive the linkage gear (171) to move on the support rod (17).

7. A high-power multi-loop photovoltaic grid-connected box according to claim 6, characterized in that: The limiting plate (15) is provided with a moving strip (174), and the moving strip (174) is provided with a moving inclined surface (176). The moving inclined surface (176) is used to drive the linkage strip (175) to move. When the limiting plate (15) is inserted into the groove (151), the linkage gear (171) is engaged with the limiting plate (15). When the limiting plate (15) is not inserted into the groove (151), the linkage gear (171) is not engaged with the limiting plate (15).

8. A high-power multi-loop photovoltaic grid-connected box according to claim 2, characterized in that: The wind deflector (122) is provided with a flow groove (123), and the flow groove (123) is provided with a flow ramp (124); when the wind deflector (122) is in a vertical state, the distance between the flow ramp (124) and the placement groove (11) gradually increases in the vertically downward direction.

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