Photovoltaic cell heat radiation fin structure

Abstract

The utility model discloses a photovoltaic cell heat radiation fin structure, which comprises a photovoltaic cell panel, a heat conduction sheet is fixedly arranged on the back of the photovoltaic cell panel, four groups of fixing bolts are uniformly arranged on the heat conduction sheet at the bottom of the photovoltaic cell panel, and the surface of the heat conduction sheet is provided with screw joint holes. And heat dissipation fins are fixedly mounted on the surface of the heat conduction sheet, and the surface of the heat conduction sheet is covered with a water cooling box. According to the photovoltaic cell heat dissipation fin structure, cooling liquid submerges a large number of heat dissipation fins and penetrates through four sets of cooling holes in the heat dissipation fins, air cooling heat dissipation work of the heat dissipation fins is achieved, the heat dissipation fins are cooled, and in the high-temperature environment in summer, all parts of a photovoltaic cell panel are heated unevenly, and heat stress is likely to be generated; through water-cooling heat dissipation, the temperature distribution of the cell panel can be more uniform, and material fatigue and potential microcracks caused by thermal expansion and cold contraction are reduced, so that the service life of the cell panel is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic cells, in particular to a photovoltaic cell heat dissipation fin structure. Background Art

[0002] Photovoltaic cells operate based on the photovoltaic effect, which states that photons can excite electrons on the surface of a material, forming free electrons and holes, thereby generating an electric current. Specifically, a photovoltaic cell consists of two layers of semiconductor material: one layer is a P-type semiconductor, which has a high concentration of holes; the other is an N-type semiconductor, which has a high concentration of free electrons. When photons strike a photovoltaic cell, they are absorbed by the semiconductor material, exciting electrons to jump from the valence band to the conduction band, forming free electrons and holes. Due to the built-in electric field between the P-type and N-type semiconductors, the free electrons and holes are separated to the two sides of the PN junction, creating a potential difference and current.

[0003] The peak of solar radiation received by photovoltaic cells is around noon, and the solar cells are also operating at maximum power generation. This is also the period when the sun's thermal radiation is strongest, and the heating effect on the solar panels and the surrounding environment is extremely strong. Therefore, a high-temperature environment is formed for the solar panels, which greatly reduces the power generation efficiency and is not conducive to the synchronization of power generation peak and power generation. Simple air cooling and natural wind cooling have little effect on the heat dissipation effect of photovoltaic cells in summer. How to reduce the temperature of solar panels during noon operation has become an urgent problem that needs to be solved. Utility Model Content

[0004] The purpose of the present invention is to provide a photovoltaic cell heat dissipation fin structure to solve the defects mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, a photovoltaic cell heat dissipation fin structure is provided, including a photovoltaic cell panel, a heat conductive sheet is fixedly installed on the back of the photovoltaic cell panel, and the heat conductive sheet is evenly installed with four groups of fixing bolts on the bottom of the photovoltaic cell panel, and screw holes are provided on the surface of the heat conductive sheet, and heat dissipation fins are fixedly installed on the surface of the heat conductive sheet, the surface of the heat conductive sheet is covered with a water cooling box, and a drain pipe is fixedly installed on one end of the water cooling box, and a liquid inlet pipe is fixedly installed on the end of the water cooling box away from the drain pipe, and a positioning seat is fixedly installed on the outer side of the bottom of the water cooling box, the surface of the positioning seat is provided with a perforation, and the surface of the heat conductive sheet is provided with a docking sealing groove.

[0006] Preferably, the heat conducting plate is a rectangular structure made of metal copper, and the area of ​​the heat conducting plate is equal to four-fifths of the bottom area of ​​the photovoltaic panel, and the four corners of the heat conducting plate are rounded.

[0007] Preferably, eight groups of screw holes are evenly installed on the surface of the heat conducting plate, and the sizes of the through holes are adapted to the screw holes, while the bolt structure passes through the through holes and is screwed and fixed inside the screw holes.

[0008] Preferably, a docking sealing strip is fixedly installed on the bottom of the water cooling box, and the size of the docking sealing strip is adapted to the size of the docking sealing groove, and both the docking sealing strip and the docking sealing groove are rectangular.

[0009] Preferably, the docking sealing strip is inserted into the inside of the docking sealing groove, and a rubber sealing pad is bonded to the end face of the docking sealing strip. At the same time, the water cooling box covers the surface of the heat conducting plate and is positioned and sealed by the docking sealing strip and the docking sealing groove.

[0010] Preferably, the heat dissipation fins are evenly arranged in multiple groups on the surface of the heat conductive plate, and the distance between two adjacent groups of heat dissipation fins is consistent. At the same time, the heat dissipation fins are arranged in an "S" shape, and four groups of cooling holes are evenly opened on the heat dissipation fins.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model uses the coolant in the water cooling box to flood a large number of heat dissipation fins and pass through the four groups of cooling holes on the heat dissipation fins to achieve air cooling and heat dissipation of the heat dissipation fins. By cooling the heat dissipation fins, the photovoltaic panels are cooled and heat dissipated by air under the action of the thermal conductive sheet. In the high temperature environment in summer, the different parts of the photovoltaic panels are heated unevenly and thermal stress is easily generated. Water cooling can make the temperature distribution of the panels more uniform, reduce material fatigue and potential micro cracks caused by thermal expansion and contraction, and thus extend the service life of the panels.

[0013] 2. The utility model increases the heat exchange area between the liquid and the heat dissipation fins by designing a large number of heat dissipation fins into an "S" shape, thereby improving the cooling effect on the photovoltaic panels. In non-summer seasons, there is no need to install a water cooling box. By utilizing natural wind impacting the surface of multiple groups of heat dissipation fins, air cooling of the photovoltaic panels can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Front view of

[0016] Figure 3 Schematic diagram of the surface structure of the thermal conductive sheet;

[0017] Figure 4 for Figure 1 sectional view of .

[0018] Numbers in the figure: 1. Photovoltaic panel; 2. Heat conducting plate; 21. Screw hole; 3. Docking sealing groove; 4. Fixing bolt; 5. Heat dissipation fin; 51. Cooling hole; 6. Water cooling box; 7. Positioning seat; 71. Perforation; 8. Docking sealing strip; 9. Liquid inlet pipe; 10. Liquid discharge pipe. DETAILED DESCRIPTION

[0019] See also Figure 1-4 The utility model provides a photovoltaic cell heat dissipation fin structure, including a photovoltaic cell panel 1, a heat conductive sheet 2 is fixedly installed on the back of the photovoltaic cell panel 1, and the heat conductive sheet 2 is evenly installed with four groups of fixing bolts 4 on the bottom of the photovoltaic cell panel 1, and screw holes 21 are provided on the surface of the heat conductive sheet 2, and heat dissipation fins 5 are fixedly installed on the surface of the heat conductive sheet 2, the surface of the heat conductive sheet 2 is covered with a water cooling box 6, and a drain pipe 10 is fixedly installed on one end of the water cooling box 6, and a liquid inlet pipe 9 is fixedly installed on the end of the water cooling box 6 away from the drain pipe 10, and a positioning seat 7 is fixedly installed on the outer side of the bottom of the water cooling box 6, and a through hole 71 is provided on the surface of the positioning seat 7, and a docking sealing groove 3 is provided on the surface of the heat conductive sheet 2.

[0020] Working principle: When in use, hold the heat conducting sheet 2, cover the heat conducting sheet 2 on the bottom of the photovoltaic panel 1, and fix it with four groups of fixing bolts 4. At this time, multiple groups of equidistant heat dissipation fins 5 are evenly arranged on the surface of the heat conducting sheet 2. The heat generated by the photovoltaic panel 1 when working is transferred to a large number of heat dissipation fins 5 through the heat conducting sheet 2. At this time, hold the water cooling box 6, insert the docking sealing strip 8 at the bottom of the water cooling box 6 into the docking sealing groove 3 opened on the surface of the heat conducting sheet 2. At this time, the positioning seat 7 covers the surface of the heat conducting sheet 2, and the bolt structure passes through the through hole 71 and is screwed and fixed to the inside of the screw hole 21; after the water cooling box 6 is fixed and installed, the coolant enters the inside of the water cooling box 6 from the liquid inlet pipe 9, and is finally discharged from the drain pipe 10. When the coolant is inside the water cooling box 6, the coolant is submerged in A large number of heat dissipation fins 5 are provided, and four groups of cooling holes 51 on the heat dissipation fins 5 are passed through to realize air cooling of the heat dissipation fins 5. By cooling the heat dissipation fins 5, under the action of the thermal conductive sheet 2, the photovoltaic panel 1 is cooled by air. In the high temperature environment in summer, the different parts of the photovoltaic panel are heated unevenly and thermal stress is easily generated. Water cooling can make the temperature distribution of the panel more uniform, reduce material fatigue and potential microcracks caused by thermal expansion and contraction, and thus extend the service life of the panel. A large number of heat dissipation fins 5 are all arranged in an "S" shape, which can increase the heat exchange area between the liquid and the heat dissipation fins 5, and improve the cooling effect on the photovoltaic panel 1. In non-summer seasons, there is no need to install a water cooling box 6. The natural wind impacting the surface of multiple groups of heat dissipation fins 5 can realize air cooling of the photovoltaic panel 1.

[0021] The heat conducting plate 2 is a rectangular structure made of metal copper, and the area of ​​the heat conducting plate 2 is equal to four fifths of the bottom area of ​​the photovoltaic panel 1 . The four corners of the heat conducting plate 2 are rounded.

[0022] As a preferred embodiment, eight groups of screw holes 21 are evenly installed on the surface of the heat conducting plate 2 , and the through holes 71 are adapted to the size of the screw holes 21 , while the bolt structure passes through the through holes 71 and is screwed and fixed inside the screw holes 21 .

[0023] A docking sealing strip 8 is fixedly installed on the bottom of the water cooling box 6, and the docking sealing strip 8 is adapted to the size of the docking sealing groove 3. At the same time, the docking sealing strip 8 and the docking sealing groove 3 are both rectangular.

[0024] As a preferred embodiment, the docking sealing strip 8 is inserted into the inside of the docking sealing groove 3, and a rubber sealing gasket is bonded to the end face of the docking sealing strip 8. At the same time, the water cooling box 6 covers the surface of the heat conducting plate 2 and is positioned and sealed with the docking sealing strip 8 and the docking sealing groove 3.

[0025] The heat dissipation fins 5 are evenly arranged in multiple groups on the surface of the heat conducting plate 2 , and the distance between two adjacent groups of heat dissipation fins 5 is consistent. At the same time, the heat dissipation fins 5 are arranged in an "S" shape, and four groups of cooling holes 51 are evenly opened on the heat dissipation fins 5 .

Claims

1. A photovoltaic cell heat dissipation fin structure, comprising a photovoltaic cell panel (1), characterized in that: A heat conducting plate (2) is fixedly mounted on the back of the photovoltaic cell panel (1), and four groups of fixing bolts (4) are evenly mounted on the bottom of the photovoltaic cell panel (1) on the heat conducting plate (2), and screw holes (21) are provided on the surface of the heat conducting plate (2), and heat dissipation fins (5) are fixedly mounted on the surface of the heat conducting plate (2), and the surface of the heat conducting plate (2) is covered with a water cooling box (6), and a drain pipe (10) is fixedly mounted on one end of the water cooling box (6), and a liquid inlet pipe (9) is fixedly mounted on the end of the water cooling box (6) away from the drain pipe (10), and a positioning seat (7) is fixedly mounted on the outer side of the bottom of the water cooling box (6), and a through hole (71) is provided on the surface of the positioning seat (7), and a docking sealing groove (3) is provided on the surface of the heat conducting plate (2).

2. The photovoltaic cell heat dissipation fin structure according to claim 1, characterized in that: The heat conducting plate (2) is a rectangular structure made of metal copper, and the area of ​​the heat conducting plate (2) is equal to four-fifths of the bottom area of ​​the photovoltaic cell panel (1), and the four corners of the heat conducting plate (2) are rounded.

3. The photovoltaic cell heat dissipation fin structure according to claim 1, characterized in that: Eight groups of screw holes (21) are evenly installed on the surface of the heat conducting plate (2), and the through holes (71) are adapted to the size of the screw holes (21). At the same time, the bolt structure passes through the through holes (71) and is screwed and fixed inside the screw holes (21).

4. The photovoltaic cell heat dissipation fin structure according to claim 1, characterized in that: A docking sealing strip (8) is fixedly installed on the bottom of the water cooling box (6), and the docking sealing strip (8) is adapted to the size of the docking sealing groove (3), and both the docking sealing strip (8) and the docking sealing groove (3) are rectangular.

5. The photovoltaic cell heat dissipation fin structure according to claim 4, characterized in that: The butt sealing strip (8) is inserted into the inside of the butt sealing groove (3), and a rubber sealing pad is bonded to the end face of the butt sealing strip (8). At the same time, the water cooling box (6) covers the surface of the heat conducting plate (2) and is positioned and sealed with the butt sealing strip (8) and the butt sealing groove (3).

6. The photovoltaic cell heat dissipation fin structure according to claim 1, characterized in that: The heat dissipation fins (5) are evenly arranged in multiple groups on the surface of the heat conducting plate (2), and the distance between two adjacent groups of heat dissipation fins (5) is consistent. At the same time, the heat dissipation fins (5) are arranged in an "S" shape, and four groups of cooling holes (51) are evenly opened on the heat dissipation fins (5).

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