Solar panel structure capable of improving illumination utilization rate

Abstract

The invention discloses a solar panel structure capable of improving the illumination utilization rate, and relates to the technical field of photovoltaic modules. The device comprises a solar cell panel and a sunlight collecting cover assembly. The solar cell panel is fixedly provided with a sunlight collecting cover assembly used for improving the illumination intensity received by the light receiving face of the solar cell panel. The sunlight collecting cover assembly comprises a collecting cover grid plate and a mounting plate; light transmitting holes are uniformly arrayed in the collecting cover grid plate, and a mounting plate is fixed at the edge of the collecting cover grid plate; the mounting plate is fixedly mounted on the solar cell panel through bolts; the light hole is of an inverted table-shaped structure; the inner wall of the light hole is coated with a reflective film A. According to the invention, through the action of the sunlight collection cover assembly, almost all sunlight received by the whole solar cell panel is concentrated to the solar cell piece, so that the light receiving surface of the solar cell panel receives all sunlight and the sunlight is effectively utilized; the solar cell panel has the advantage of improving the effective utilization rate of the solar cell panel to sunlight.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic modules, and particularly relates to a solar panel structure for improving light utilization. BACKGROUND

[0002] As an important part of clean energy, solar photovoltaic technology has been widely used in the world in recent years. Photovoltaic modules convert solar energy into electrical energy through the photoelectric effect, and the core components include solar cell pieces, packaging materials, back plates, glass cover plates, and junction boxes. Although the traditional photovoltaic module is mature in technology, it still has certain limitations in practical application, such as the photoelectric conversion efficiency being restricted by material properties, optical loss, and heat loss, etc., resulting in that the sunlight utilization rate cannot reach the optimal level.

[0003] In order to improve the power generation efficiency of photovoltaic modules, the industry has explored various technical paths, including using high-efficiency cells PERC, optimizing glass light transmittance, and improving the algorithm and control system for tracking the sunlight incidence angle. In terms of structural design, double-sided power generation components, overlapping tile technology, and main grid-free cells further improve the power output per unit area.

[0004] However, it only improves the overall light intensity of sunlight shining on the solar panel in the solar panel, and there is a gap between the two adjacent solar cell pieces or between the two adjacent solar cell panels in the solar panel, so that when sunlight shines in the gap, almost all of it is used to generate heat; therefore, the overall sunlight utilization rate is reduced.

[0005] In view of the above-mentioned problem that the sunlight shining on the solar panel cannot be effectively utilized, the application designs a solar panel structure for improving light utilization. SUMMARY

[0006] The purpose of the application is to provide a solar panel structure for improving light utilization, which concentrates almost all the sunlight that the entire solar panel can receive on the solar cell piece through the action of the sunlight collecting cover assembly, so that the light receiving surface of the solar panel receives all the sunlight and effectively utilizes it; improve the effective utilization rate of sunlight by the solar panel, and solve the above-mentioned problem.

[0007] To solve the above technical problems, the application is realized by the following technical scheme:

[0008] The application discloses a solar panel structure for improving light utilization, which comprises a solar panel and a sunlight collecting cover assembly; the solar panel comprises tempered glass, solar cell pieces, a back plate and an aluminum frame; the upper layer and the lower layer of the solar cell pieces are respectively bonded and packaged with the tempered glass and the back plate through upper-layer EVA adhesive film and lower-layer EVA adhesive film; the tempered glass, the solar cell pieces and the back plate form a sandwich, and the aluminum frame is fixedly installed at the edge of the sandwich; the solar panel is fixedly installed with the sunlight collecting cover assembly for improving the light intensity received by the light-receiving surface of the solar panel; the sunlight collecting cover assembly comprises a collecting cover grid plate and a mounting plate; the collecting cover grid plate is uniformly provided with light-transmitting holes in an array, and the mounting plate is fixed at the edge of the collecting cover grid plate; the mounting plate is fixedly installed on the solar panel through bolts; the light-transmitting holes are inverted table-shaped structures; the inner wall of the light-transmitting holes is coated with a light-reflecting film A; the collecting cover grid plate and the light-reflecting film A can concentrate almost all the sunlight received by the solar panel on the solar cell pieces, so that the light-receiving surface of the solar panel can receive all the sunlight and effectively utilize the sunlight, and the effective utilization rate of the solar panel for sunlight is improved.

[0009] The light-heat conversion of the solar cell pieces is that a part of energy is converted into electric energy and another part of energy is converted into heat energy after the solar cell pieces absorb sunlight; the temperature performance is that the temperature of the cell pieces is usually 20-40 DEG C higher than the environment; the high temperature can reduce the cell efficiency; approximately, the efficiency is reduced by about 0.3%-0.5% per 1 DEG C increase; therefore, when the temperature is high, it is beneficial to reduce the high temperature by relatively reducing the proportion of sunlight converted into heat; when the sunlight is sufficient and the light intensity is the same, the solar cell pieces of the application can receive more light intensity than the traditional solar panel; meanwhile, the sunlight that should be irradiated into the gap is reflected to the solar cell pieces and partially converted into electric energy, so that the proportion of sunlight converted into heat is reduced, the temperature increase is reduced, the influence of the high temperature on the reduction of the cell efficiency is relatively low, the solar cell pieces of the application can receive more sunlight, and the solar cell pieces have the dual beneficial effects of higher electric energy conversion efficiency.

[0010] As a preferred technical scheme of the present application, the gap between the battery pieces inside the traditional solar panel is generally 2-3 mm, the gap between each battery piece array area is generally 10-15 mm, and the interval between adjacent solar panels is more than 10 cm; the top of the two adjacent light transmission holes is tightly fitted; the gap between the bottoms of the two adjacent light transmission holes is 10-12 mm, or the gap between the bottoms of the two adjacent light transmission holes is 10 cm, the former size is suitable for the sunlight collecting cover assembly on a single solar panel, and the latter size is suitable for the sunlight collecting cover assembly on multiple array type solar panels; the upper surface of the collecting cover grid plate is relatively sharp; and the lower surface of the collecting cover grid plate is a grid plate plane structure.

[0011] As a preferred technical scheme of the present application, the light transmission hole is an inverted rectangular table structure; the inner wall of the light transmission hole is a flat inclined surface, the angle between the inclined surface of the inner wall of the light transmission hole and the horizontal plane ranges from 70° to 85°; and the light reflection film A on the inner wall of the light transmission hole reflects more sunlight onto the solar cell piece.

[0012] As a preferred technical scheme of the present application, the inner wall of the light transmission hole is a flat inclined surface, the angle between the inclined surface of the south inner wall of the light transmission hole and the horizontal plane ranges from 30° to 60°; the angle between the inclined surface of the east inner wall and the west inner wall of the light transmission hole and the horizontal plane ranges from 70° to 85°; the angle between the inclined surface of the north inner wall of the light transmission hole and the horizontal plane ranges from 80° to 90°; and the light reflection film A on the inner wall of the light transmission hole reflects more sunlight onto the solar cell piece according to the optimal inclination state of each direction.

[0013] As a preferred technical scheme of the present application, the peripheral collecting cover assembly is further fixed to the side surface of the sunlight collecting cover assembly to improve the light intensity received by the light receiving surface; the peripheral collecting cover assembly is suitable for application sites with a large gap between adjacent solar panels; and the peripheral collecting cover assembly is used to increase the light intensity that can be received by the entire solar panel.

[0014] As a preferred technical scheme of the present application, the peripheral collecting cover assembly includes a plurality of layers of light collecting reflection channel pipes; the light collecting reflection channel pipes are inclined rectangular pipes, and the inner walls of the light collecting reflection channel pipes are coated with a light reflection film B.

[0015] As a preferred technical scheme of the present application, the bottom end of each layer of the light collecting reflection channel pipe is fixed with a light reflection sheet.

[0016] As a preferred technical scheme of the present application, the reflective sheet is a double-sided reflective sheet, the upper surface of the reflective sheet is used for reflecting direct sunlight to the solar cell panel, and the lower surface of the reflective sheet is used for reflecting sunlight reflected in the light collecting and reflecting channel pipe to the solar cell panel again.

[0017] As a preferred technical scheme of the present application, the aluminum frame side of the solar cell panel is fixed with a mounting lug, and the mounting lug is fixedly mounted with the mounting plate through a bolt.

[0018] The present application has the following advantages:

[0019] 1. The present application can concentrate almost all sunlight received by the entire solar cell panel to the solar cell panel through the sunlight collecting cover assembly, so that the light receiving surface of the solar cell panel can receive all sunlight and effectively utilize the sunlight.

[0020] 2. The present application can increase the light intensity received by the entire solar cell panel through the peripheral collecting cover assembly.

[0021] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 FIG. 1 is a structural schematic view of a solar panel structure for improving light utilization according to the present application in embodiment one;

[0024] Figure 2 FIG. 2 is a structural top view of the solar panel structure for improving light utilization according to the present application in embodiment one;

[0025] Figure 3 FIG. 3 is a structural bottom view of the solar panel structure for improving light utilization according to the present application in embodiment one;

[0026] Figure 4 FIG. 4 is a structural schematic view of a solar panel structure for improving light utilization according to the present application in embodiment two;

[0027] Figure 5 FIG. 5 is a structural top view of the solar panel structure for improving light utilization according to the present application in embodiment two;

[0028] Figure 6 Structure top view of a solar panel structure of the present application for improving light utilization in Example Three;

[0029] Figure 7 Structure schematic diagram of a solar panel structure of the present application for improving light utilization in Example Four;

[0030] Figure 8 Structure top view of a solar panel structure of the present application for improving light utilization in Example Four;

[0031] Figure 9 Structure front view of a solar panel structure of the present application for improving light utilization in Example Four;

[0032] Figure 10 Structure perspective view of a peripheral cover assembly of the present application in Example Four;

[0033] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0034] 1 - solar panel, 2 - solar light cover assembly, 3 - peripheral cover assembly, 101 - mounting ear, 102 - solar cell piece, 201 - cover grid plate, 202 - mounting plate, 203 - light transmission hole, 204 - light reflection film A, 301 - light collection reflection channel pipe, 302 - light reflection film B, 303 - light reflection sheet. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0036] Example One

[0037] Please refer to Figures 1-3As shown, the application is a solar panel structure for improving light utilization, comprising a solar panel 1 and a sunlight collecting cover assembly 2; the solar panel 1 comprises tempered glass, solar cell pieces 102, a back plate and an aluminum frame; the upper layer and the lower layer of the solar cell pieces 102 are respectively bonded and packaged with the tempered glass and the back plate through the upper layer EVA adhesive film and the lower layer EVA adhesive film, and the edge of the sandwich layer composed of the tempered glass, the solar cell pieces 102 and the back plate is fixedly installed with the aluminum frame; the solar panel 1 is fixedly installed with the sunlight collecting cover assembly 2 for improving the light intensity received by the light receiving surface thereof; the sunlight collecting cover assembly 2 comprises a collecting cover grid plate 201 and a mounting plate 202; the collecting cover grid plate 201 is uniformly arrayed with light transmission holes 203, and the edge of the collecting cover grid plate 201 is fixedly provided with the mounting plate 202; the mounting plate 202 is fixedly installed on the solar panel 1 through bolts; the light transmission hole 203 is an inverted table structure; the inner wall of the light transmission hole 203 is coated with a reflective film A 204; the collecting cover grid plate 201 and the reflective film A 204 have the effect of concentrating almost all the sunlight that can be received by the entire solar panel 1 onto the solar cell pieces 102, so that the light receiving surface of the solar panel 1 will receive all the sunlight and effectively utilize it; and the effective utilization rate of the solar panel 1 on sunlight is improved.

[0038] Among them, the photo-thermal conversion of the solar cell piece 102 is that after the solar cell piece 102 absorbs sunlight, part of the energy is converted into electrical energy, and the other part of the energy is converted into heat energy; its temperature performance is that the cell piece temperature is usually 20-40℃ higher than the environment; and high temperature will reduce the battery efficiency; approximately: for every 1℃ rise, the efficiency decreases by about 0.3%-0.5%; therefore, when in high temperature, relatively reducing the proportion of sunlight converted into heat is conducive to reducing high temperature; so that when the sunlight is sufficient and the light intensity is the same, the solar cell piece 102 of the application can receive more light intensity than the traditional solar panel; at the same time, since the sunlight that should be irradiated into the gap is reflected to the solar cell piece 102 and partially converted into electrical energy, the proportion of sunlight converted into heat is reduced, that is, the degree of temperature increase is reduced, so that the influence of high temperature on reducing the battery efficiency is relatively low; therefore, the solar cell piece 102 of the application not only can receive more sunlight, but also has the dual beneficial effects of higher electrical energy conversion efficiency.

[0039] Among them, as shown in the figure, Figure 3 The aluminum frame side of the solar panel 1 is fixedly provided with a mounting lug 101, and the mounting lug 101 is fixedly installed with the mounting plate 202 through bolts.

[0040] Among them, as shown in the figure, Figure 2As shown, since the gap between the cells inside a traditional solar panel is generally 2mm-3mm; and the gap between each cell array area is generally 10mm-15mm, the tops of two adjacent light-transmitting holes 203 fit tightly together; the gap between the bottoms of two adjacent light-transmitting holes 203 is 10mm-12mm, which is suitable for the sunlight collection cover assembly 2 on a single solar cell panel 1, and the upper surface of the collection cover grid plate 201 has relatively sharp edges; the lower surface of the collection cover grid plate 201 is a grid plate flat structure.

[0041] Among them Figure 1 As shown, the light-transmitting hole 203 is an inverted rectangular table structure; the inner wall of the light-transmitting hole 203 is a flat inclined surface, and the angle between the inclined surface of the inner wall of the light-transmitting hole 203 and the horizontal plane ranges from 70° to 85°; the reflective film A204 on the inner wall of the light-transmitting hole 203 reflects more sunlight onto the solar cell 102.

[0042] Example 2

[0043] A more preferred technical solution based on Example 1 is as follows: Figures 4-5 As shown, the inner wall of the light-transmitting hole 203 is a flat inclined surface, and the angle between the inclined surface of the south inner wall of the light-transmitting hole 203 and the horizontal plane is in the range of 30°-60°; the angle between the inclined surface of the east inner wall and the west inner wall of the light-transmitting hole 203 and the horizontal plane is in the range of 70°-85°; the angle between the inclined surface of the north inner wall of the light-transmitting hole 203 and the horizontal plane is in the range of 80°-90°; the reflective film A204 on the inner wall of the light-transmitting hole 203 is tilted in the best state according to each direction to reflect more sunlight onto the solar cell 102.

[0044] Example 3

[0045] A more preferred technical solution based on Example 1 is as follows: Figure 6 As shown, since the spacing between traditional adjacent solar panels is more than 10 cm; the gap between the bottoms of two adjacent light-transmitting holes 203 is 10 cm, it is suitable for the sunlight collection cover assembly 2 on multiple array solar panels 1; the upper surface of the collection cover grid plate 201 is a relatively sharp edge; the lower surface of the collection cover grid plate 201 is a grid plate flat structure.

[0046] Example 4

[0047] A more preferred technical solution based on Example 1 is as follows: Figures 7-10As shown, the peripheral light collecting cover assembly 3 is fixed on the side of the solar light collecting cover assembly 2 to increase the light intensity on the light receiving surface of the solar panel 1. The peripheral light collecting cover assembly 3 is suitable for the application where the gap between two adjacent solar panels 1 is large. The peripheral light collecting cover assembly 3 is used to increase the light intensity on the solar panel 1. The peripheral light collecting cover assembly 3 comprises three layers of light collecting reflection channel pipes 301. The light collecting reflection channel pipes 301 are rectangular pipes in an inclined state, and the inner walls of the light collecting reflection channel pipes 301 are coated with a reflective film B302.

[0048] As shown in the drawings, Figures 9-10 As shown, the peripheral light collecting cover assembly 3 is fixed on the side of the solar light collecting cover assembly 2 to increase the light intensity on the light receiving surface of the solar panel 1. The peripheral light collecting cover assembly 3 is suitable for the application where the gap between two adjacent solar panels 1 is large. The peripheral light collecting cover assembly 3 is used to increase the light intensity on the solar panel 1. The peripheral light collecting cover assembly 3 comprises three layers of light collecting reflection channel pipes 301. The light collecting reflection channel pipes 301 are rectangular pipes in an inclined state, and the inner walls of the light collecting reflection channel pipes 301 are coated with a reflective film B302.

[0049] In the description of the present specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of the present specification. The present specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their entire scope and equivalents.

Claims

1. A solar panel structure for improving light utilization efficiency, characterized by: It comprises a solar cell panel (1) and a sunlight collecting cover assembly (2); A sunlight collecting cover assembly (2) for increasing the intensity of light received by the light-receiving surface of the solar cell panel (1) is fixedly mounted on the solar cell panel (1); The solar light collecting shroud assembly (2) comprises a collecting shroud grid plate (201) and a mounting plate (202); the collecting shroud grid plate (201) is provided with light-transmitting holes (203) arranged in a uniform array; the mounting plate (202) is fixed to the edge of the collecting shroud grid plate (201); the mounting plate (202) is fixed to the solar cell panel (1) by means of bolts; The light-transmitting hole (203) is an inverted table-shaped structure; the inner wall of the light-transmitting hole (203) is coated with a reflective film A (204).

2. A solar panel structure for improving light utilization efficiency according to claim 1, characterized in that: The tops of two adjacent light-transmitting holes (203) are tightly fitted together; the gap between the bottoms of two adjacent light-transmitting holes (203) is 5 mm to 15 mm, or the gap between the bottoms of two adjacent light-transmitting holes (203) is 10 cm.

3. A solar panel structure for improving light utilization efficiency according to claim 1, characterized in that: The light-transmitting hole (203) is an inverted rectangular platform structure.

4. A solar panel structure for improving light utilization efficiency according to claim 1, characterized in that: The inner wall of the light-transmitting hole (203) is a flat inclined surface, and the angle between the inclined surface of the inner wall of the light-transmitting hole (203) and the horizontal plane is in the range of 70°-85°.

5. The solar panel structure for improving light utilization efficiency according to claim 1, characterized in that: The inner wall of the light-transmitting hole (203) is a flat inclined surface, and the angle between the inclined surface of the inner wall on the south side of the light-transmitting hole (203) and the horizontal plane is in the range of 30°-60°; the angle between the inclined surfaces of the inner wall on the east side and the inner wall on the west side of the light-transmitting hole (203) and the horizontal plane is in the range of 70°-85°; and the angle between the inclined surface of the inner wall on the north side of the light-transmitting hole (203) and the horizontal plane is in the range of 80°-90°.

6. A solar panel structure for improving light utilization efficiency according to claim 1, characterized in that: The peripheral side surface of the sunlight collecting cover component (2) is also fixed with a peripheral collecting cover component (3) for increasing the intensity of light received by the light receiving surface thereof.

7. A solar panel structure for improving light utilization efficiency according to claim 6, characterized in that: The peripheral collecting cover assembly (3) comprises several layers of light collecting and reflecting channel tubes (301); the light collecting and reflecting channel tubes (301) are rectangular tubes in an inclined state, and the inner walls of the light collecting and reflecting channel tubes (301) are coated with a reflective film B (302).

8. A solar panel structure for improving light utilization efficiency according to claim 7, characterized in that: Reflective sheets (303) are fixed at the bottom ends of the several layers of light-collecting and reflecting channel tubes (301).

9. A solar panel structure for improving light utilization efficiency according to claim 8, characterized in that: The reflective sheet (303) is a double-sided reflective sheet; the upper surface of the reflective sheet (303) is used to reflect direct sunlight onto the solar cell panel (1); and the lower surface of the reflective sheet (303) is used to reflect sunlight reflected in the light-collecting reflective channel tube (301) onto the solar cell panel (1).

10. The solar panel structure for improving light utilization efficiency according to claim 1, characterized in that: A mounting ear (101) is fixed to the side of the aluminum frame of the solar cell panel (1), and the mounting ear (101) and the mounting plate (202) are fixedly mounted by bolts.

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