Hollow heat dissipation type photovoltaic panel junction box

Abstract

This utility model belongs to the technical field of photovoltaic panel junction boxes, specifically a hollow heat-dissipating photovoltaic panel junction box. It includes an upper shell, a lower shell at the bottom of the upper shell, connecting elements inside the lower shell, a movable plate slidably disposed inside the upper shell, heat dissipation fins below the movable plate and inside the upper shell, and a cooling fan inside the heat dissipation fins. The heat dissipation fins and the cooling fan are slidably connected. An air inlet is provided on the end face of the movable plate, and an air outlet is provided on the outer surface of the upper shell away from the air inlet. This utility model, by incorporating a heat dissipation copper plate and heat pipes, can conduct heat generated inside the lower shell to the outside, solving the problem of heat accumulation inside the junction box. By incorporating a filter screen and dust collection groove, the filter screen can be easily removed for cleaning and replacement, solving the problem of dust entering the junction box and being difficult to clean.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic panel junction box technology, and particularly relates to a hollow heat dissipation photovoltaic panel junction box. Background Technology

[0002] The photovoltaic industry, with solar cells / modules as its core, drives the balanced and coordinated development of the entire industrial chain. my country has formed a high-level, large-scale, professional, and international photovoltaic industry cluster. A photovoltaic junction box is a component used to connect lines in a photovoltaic solar energy system. A typical photovoltaic junction box includes a box body and multiphase conductors installed inside the box body, with bypass diodes connecting the conductors.

[0003] Patent CN220067376U discloses a hollow heat-dissipating photovoltaic panel junction box, which includes a U-shaped box: a cover plate is fixedly connected to the top of the U-shaped box by bolts; two terminals are fixedly connected to the front side of the U-shaped box; two fixing blocks are fixedly connected to the surface of the U-shaped box; and multiple heat dissipation fins are fixedly installed on the surface of the U-shaped box. This invention transfers heat from the inner cavity of the U-shaped box to between two perforated plates through the heat dissipation fins. Then, a wind-cooled radiator drives the heat to flow to the outside through the holes in the perforated plates. When cleaning the wind-cooled radiator is required, pressing the pressure block moves the column block to the inner cavity of the cylindrical groove via a sliding rod, and then the wind-cooled radiator is pulled out. This achieves air cooling of the U-shaped box through the wind-cooled radiator, while also facilitating the disassembly and assembly of the wind-cooled radiator, and thus facilitating the cleaning of the fan blades, thereby ensuring the effective air cooling of the radiator.

[0004] In existing technologies, junction boxes can be cooled by using air-cooled radiators and perforated plates. However, the following problems still exist during overall use: First, existing technologies can only dissipate heat from the outer surface or high-heat-generating parts of the junction box through the radiator. The heat inside the junction box is difficult to dissipate, leading to internal heat accumulation and affecting the service life of the junction box. Second, in existing technologies, when the junction box is dissipating heat, dust can easily enter the interior of the junction box through the heat dissipation vents, causing dust accumulation that is difficult to clean and affecting the normal use of the junction box. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model provides a hollow heat-dissipating photovoltaic panel junction box. By setting up structures such as heat dissipation copper plates and heat conduction pipes, the heat generated inside the lower shell can be conducted to the outside, solving the problem of heat accumulation inside the junction box. By setting up structures such as filter screens and dust collection grooves, it is easy to remove and clean the filter screen separately, solving the problem of dust entering the junction box and being difficult to clean.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hollow heat-dissipating photovoltaic panel junction box, comprising an upper shell, a lower shell at the bottom of the upper shell, a connecting element inside the lower shell, a movable plate slidably disposed inside the upper shell, a plurality of heat dissipation fins disposed below the movable plate inside the upper shell, a cooling fan disposed inside the plurality of heat dissipation fins, the plurality of heat dissipation fins and the cooling fan being slidably connected, an air inlet disposed on the end face of the movable plate, and an air outlet disposed on the outer surface of the upper shell away from the air inlet.

[0007] Preferably, the lower housing is provided with an installation plate inside, and a heat dissipation copper plate is provided on the bottom end face of the installation plate inside the lower housing. The heat dissipation copper plate is provided with a fixed base on both ends of the installation plate.

[0008] Preferably, a plurality of heat-conducting pipes are provided on the end face of the heat-dissipating copper plate, and the plurality of heat-conducting pipes are fixedly connected to the heat dissipation fins.

[0009] Preferably, a filter screen is slidably disposed on the outside of the plurality of heat dissipation fins and inside the upper housing. The filter screen is fixedly connected to the bottom end face of the movable plate, and two lifting handles are provided on the end face of the movable plate.

[0010] Preferably, the outer surface of the filter screen is provided with a dust collection groove.

[0011] Preferably, the outer surface of the filter screen is provided with a slot, and a sliding rod is slidably disposed inside the slot. A top is provided at one end of the sliding rod near the slot, and a return spring is provided on one side of the top on the outer surface of the sliding rod. One end of the return spring is fixedly connected to the inner wall of the upper housing, and one end of the sliding rod extends outward from the upper housing. A buckle is rotatably disposed at the extended end of the sliding rod.

[0012] Preferably, the buckle includes a protruding portion disposed on the outer surface of the buckle, and the bottom of the buckle is provided with a lifting portion.

[0013] Preferably, a sealing strip is provided on the bottom end face of the movable plate on the inner wall of the upper housing.

[0014] Preferably, the lower housing has multiple fixed platforms inside, and each fixed platform has a buffer damper on its top surface. One end of each buffer damper is fixedly connected to the mounting plate.

[0015] In summary, compared with existing technologies, the beneficial effects of this solution are as follows:

[0016] (1) By setting up heat dissipation copper plate, heat dissipation fins, heat pipes and heat dissipation fan, this utility model can not only conduct the heat generated inside the lower shell to the outside and dissipate it through the heat dissipation fan, but also distribute the heat evenly on the surface of the heat pipes through multiple heat pipes and heat dissipation fins, thereby improving the heat dissipation efficiency.

[0017] (2) This utility model sets up a filter screen, a dust collection trough, a sliding rod, and a buckle, etc. The filter screen can filter the air entering the upper housing, prevent dust from affecting the performance of the junction box, and at the same time, the filter screen can be taken out separately without separating the upper and lower housings, which is convenient for cleaning and replacing the filter screen and improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a side view of the present invention;

[0020] Figure 3 for Figure 2 A three-dimensional sectional view at point AA;

[0021] Figure 4 This is a structural schematic diagram of a heat pipe component;

[0022] Figure 5 for Figure 3 A magnified view of a section at point B in the middle;

[0023] Figure 6 This is a structural diagram of the filter screen components;

[0024] Figure 7 This is a front view of the present invention;

[0025] Figure 8 for Figure 7 A three-dimensional sectional view at point CC;

[0026] In the diagram: Upper housing 10, Lower housing 11, Lifting handle 12, Cooling fan 13, Air inlet 14, Air outlet 15, Heat dissipation fins 16, Heat dissipation copper plate 17, Fixed base 18, Heat conduction pipe 19, Mounting plate 20, Filter screen 21, Dust collection trough 22, Sealing strip 23, Slot 24, Sliding rod 25, Return spring 26, Buckle 27, Protruding part 28, Lifting part 29, Fixed platform 30, Buffer damper 31, Connection port 32, Movable plate 33, Connecting element 34. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] refer to Figure 1 , Figure 2 and Figure 3 A hollow heat-dissipating photovoltaic panel junction box includes an upper housing 10, a lower housing 11 at the bottom of the upper housing 10, and the upper housing 10 and the lower housing 11 can be connected externally by bolts. A connecting element 34 is provided inside the lower housing 11, and a connection port 32 is provided on the outer surface of the lower housing 11. External cables can be connected to the connecting element 34 through the connection port 32. The connecting element 34 is set according to the wiring requirements of the junction box and belongs to mature prior art, which will not be elaborated in this application.

[0029] Further reference Figure 2 , Figure 3 , Figure 4 and Figure 6 The lower housing 11 has an internal mounting plate 20. A heat dissipation copper plate 17 is installed on the bottom end face of the mounting plate 20 inside the lower housing 11. The heat dissipation copper plate 17 is located directly above the connecting element 34. When the connecting element 34 is working, it will generate heat. By setting the heat dissipation copper plate 17, the heat can be transferred to the outside of the lower housing 11, which can effectively prevent the heat accumulation problem inside the lower housing 11. Both ends of the heat dissipation copper plate 17 extend to the top end face of the mounting plate 20. A fixing base 18 is provided on the outside of both ends of the heat dissipation copper plate 17 extending from the mounting plate 20. The two fixing bases 18 are used to fix the heat dissipation copper plate 17 and prevent the heat dissipation copper plate 17 from directly contacting the connecting element 34 and affecting the normal operation of the connecting element 34.

[0030] Furthermore, multiple heat pipes 19 are provided on the end face of the heat dissipation copper plate 17. Each heat pipe 19 and the interior of the heat dissipation copper plate 17 are provided with a cavity, and the heat pipes 19 are connected to the interior of the heat dissipation copper plate 17. The interior of the heat dissipation copper plate 17 is filled with a small amount of volatile coolant. If extreme high temperatures are generated when the connecting element 34 is operating, this heat will dissipate the heat from the heat dissipation copper plate 17. The internal coolant evaporates, and the resulting steam rises and enters the interior of the heat pipe 19. The high-temperature steam comes into contact with the low-temperature heat pipe 19, converts into condensate, and flows back into the interior of the heat dissipation copper plate 17, cooling the heat dissipation copper plate 17. This allows the heat dissipation copper plate 17 to cool the interior of the lower shell 11. The steam conducts the temperature to the interior of the heat pipe 19. Multiple heat pipes 19 extend outward in a fan shape, and multiple heat dissipation fins 16 are provided on the outer surface of the multiple heat pipes 19. The heat pipes 19 evenly transfer the temperature to the multiple heat dissipation fins 16. A cooling fan 13 is provided between the multiple heat dissipation fins 16. By activating the cooling fan 13, the surface temperature of the heat dissipation fins 16 can be reduced when the temperature is low, thereby achieving a cooling effect without the need for coolant intervention.

[0031] Further reference Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 8 A movable plate 33 is slidably disposed inside the upper housing 10. The movable plate 33 is fixedly connected to the cooling fan 13. An air inlet 14 is disposed on the end face of the movable plate 33. An air outlet 15 is disposed on the outer surface of the upper housing 10 away from the air inlet 14. A screen is disposed inside both the air inlet 14 and the air outlet 15 to prevent larger particles from entering the interior of the upper housing 10. A filter screen 21 is slidably disposed on the outside of multiple heat dissipation fins 16 inside the upper housing 10. The filter screen 21 is fixedly connected to the bottom end face of the movable plate 33 and surrounds the outer surface of multiple heat dissipation fins 16.

[0032] After the cooling fan 13 is turned on, air enters the interior of the upper housing 10 through the air inlet 14. Larger particles are blocked by the air inlet 14. Then, when the air passes through the filter screen 21, smaller particles are blocked by the filter screen 21, preventing dust particles from accumulating between the multiple heat dissipation fins 16 and affecting the ventilation and heat dissipation effect of the cooling fan 13. Two lifting handles 12 are provided on the end face of the movable plate 33. By lifting the two lifting handles 12, the movable plate 33 and the filter screen 21 can be lifted out as a whole, achieving modular installation. This facilitates the replacement and cleaning of the filter screen 21, improving maintenance efficiency. The outer surface of the filter screen 21 is provided with a dust collection groove 22. By providing the dust collection groove 22, the dust filtered on the outer surface of the filter screen 21 will fall into the dust collection groove 22 by gravity. When cleaning the filter screen 21, it is easy to carry the dust out, thereby improving the convenience of the device.

[0033] The outer surface of the filter screen 21 is provided with a slot 24, and a sliding rod 25 is slidably arranged inside the slot 24. A top is provided at one end of the sliding rod 25 near the slot 24. When the top slides into the inside of the slot 24, it can prevent the filter screen 21 from moving upward, thereby locking the filter screen 21 and fixing it. The upper end face of the top is provided with an inclined surface. When the filter screen 21 is installed, the bottom end face of the filter screen 21 is pressed against the inclined surface of the top by moving the movable plate 33 downward, and the top is pushed backward as it continues to move downward. A return spring 26 is provided on one side of the top and the outer surface of the sliding rod 25. One end of the return spring 26 is fixedly connected to the inner wall of the upper housing 10. During the movement of the top, the return spring 26 is squeezed until the top enters the inside of the slot 24. The return spring 26 recovers due to its elastic potential energy and pushes the top into the inside of the sliding rod 25, preventing the filter screen 21 from sliding upward, thereby fixing the filter screen 21. One end of the sliding rod 25 extends outward from the upper housing 10.

[0034] When the filter screen 21 needs to be repaired or replaced, the extended end of the sliding rod 25 is provided with a buckle 27. The buckle 27 includes a protruding part 28 on the outer surface of the buckle 27 and a lifting part 29 at the bottom of the buckle 27. By rotating the buckle 27, the protruding part 28 at one end of the buckle 27 abuts against the outer surface of the upper housing 10 and rotates. Under the rotation of the buckle 27, the distance between the connection between the sliding rod 25 and the buckle 27 and the outer surface of the upper housing 10 increases, causing the buckle 27 to pull the sliding rod 25 to move outward, so that the top end of the sliding rod 25 disengages from the slot 24. At this time, the movable plate 33, as well as the filter screen 21 and the cooling fan 13 on the bottom end face of the movable plate 33, can be pulled out by the lifting handle 12.

[0035] Further reference Figure 7 and Figure 8 A sealing strip 23 is provided on the bottom end face of the movable plate 33 on the inner wall of the upper housing 10. The sealing strip 23 can improve the sealing between the movable plate 33 and the upper housing 10 and prevent dust from entering. Multiple fixed platforms 30 are provided inside the lower housing 11. Each fixed platform 30 is provided with a buffer damper 31 on its top end face. One end of the buffer damper 31 is fixedly connected to the mounting plate 20. The buffer damper 31 can buffer the vibration generated by the cooling fan 13 during operation, thereby improving the stability of the device.

[0036] The hollow heat-dissipating photovoltaic panel junction box of this utility model uses common mechanical methods for installation and connection. The control of the driving component by the detection component and the related detection methods and specific circuit relationships of each detection component can all adopt conventional electrical control technology. As long as the corresponding motion relationship can be completed and the beneficial effect can be achieved in this solution, it can be implemented. The cooling fan 13 and connecting element 34 in the hollow heat-dissipating photovoltaic panel junction box of this utility model are all purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0037] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0038] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0039] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A hollow heat-dissipating type photovoltaic panel junction box comprising an upper housing (10), characterized in that, The bottom of the upper housing (10) is provided with a lower housing (11), and a connecting element (34) is provided inside the lower housing (11). A movable plate (33) is slidably provided inside the upper housing (10). A plurality of heat dissipation fins (16) are provided below the movable plate (33) inside the upper housing (10). A cooling fan (13) is provided inside the plurality of heat dissipation fins (16). The plurality of heat dissipation fins (16) and the cooling fan (13) are slidably connected. An air inlet (14) is provided on the end face of the movable plate (33). An air outlet (15) is provided on the outer surface of the upper housing (10) away from the air inlet (14).

2. The hollow heat-dissipation photovoltaic panel junction box according to claim 1, characterized in that, The lower housing (11) is provided with an installation plate (20). The bottom end face of the installation plate (20) is provided with a heat dissipation copper plate (17) inside the lower housing (11). Both ends of the heat dissipation copper plate (17) extend toward the top end face of the installation plate (20). Fixed bases (18) are provided on the outside of both ends of the heat dissipation copper plate (17) extending out of the installation plate (20).

3. The hollow heat-dissipation photovoltaic panel junction box according to claim 2, characterized in that, The heat dissipation copper plate (17) is provided with a plurality of heat conduction pipes (19) on its end face, and the plurality of heat conduction pipes (19) are fixedly connected to the heat dissipation fins (16).

4. The hollow heat-dissipation photovoltaic panel junction box according to claim 3, characterized in that, A filter screen (21) is slidably disposed on the outside of the plurality of heat dissipation fins (16) inside the upper housing (10). The filter screen (21) is fixedly connected to the bottom end face of the movable plate (33). Two lifting handles (12) are provided on the end face of the movable plate (33).

5. The hollow heat-dissipation photovoltaic panel junction box according to claim 4, characterized in that, The outer surface of the filter screen (21) is provided with a dust collection groove (22).

6. The hollow heat-dissipating photovoltaic panel junction box according to claim 4, characterized in that, The outer surface of the filter screen (21) is provided with a slot (24), and a sliding rod (25) is slidably provided inside the slot (24). A top is provided at one end of the sliding rod (25) near the slot (24), and a return spring (26) is provided on one side of the top on the outer surface of the sliding rod (25). One end of the return spring (26) is fixedly connected to the inner wall of the upper housing (10), and one end of the sliding rod (25) extends out of the upper housing (10). A buckle (27) is rotatably provided at the extended end of the sliding rod (25).

7. The hollow heat-dissipating photovoltaic panel junction box according to claim 6, characterized in that, The buckle (27) includes a protruding part (28) provided on the outer surface of the buckle (27), and a lifting part (29) is provided at the bottom of the buckle (27).

8. The hollow heat-dissipation photovoltaic panel junction box according to claim 4, characterized in that, A sealing strip (23) is provided on the bottom end face of the movable plate (33) on the inner wall of the upper shell (10).

9. The hollow heat-dissipation photovoltaic panel junction box according to claim 2, characterized in that, The lower housing (11) is provided with a plurality of fixed platforms (30), and each of the fixed platforms (30) is provided with a buffer damper (31) on its top end face. One end of each buffer damper (31) is fixedly connected to the mounting plate (20).

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