A dual glass photovoltaic module

Abstract

The application relates to the technical field of photovoltaic modules, and discloses a double-glass photovoltaic module, which comprises a laminated part and a frame. The laminated part comprises a glass cover plate layer, a first encapsulation layer, a cell array layer, a second encapsulation layer and a glass back plate layer which are sequentially stacked. The cell array layer comprises a plurality of arrayed cell strings, each cell string comprising a plurality of cell pieces which are sequentially connected in series. The glass back plate layer is provided with a spoiler strip on the side far from the cell array layer. The spoiler strip comprises a plurality of first spoiler strips which are arranged around the periphery of each cell string. The double-glass photovoltaic module can effectively reduce the overall working temperature and improve the power generation capacity. The spoiler strip structure is simple, does not block the cell pieces, and is simple to manufacture and implement and low in cost.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module technology, specifically to a double-glass photovoltaic module. Background Technology

[0002] Double-glass photovoltaic (PV) modules typically use bifacial cells, with both the front cover and the back sheet made of glass. Besides directly receiving sunlight from the front, the back also absorbs reflected and scattered light from the ground, water, roof, and other surrounding environments to generate electricity, thus increasing the total power output. When PV modules are exposed to sunlight, they can only convert a portion of the solar energy into electricity; the majority of the remaining energy is converted into heat, causing the module temperature to rise. The power generation efficiency of PV cells is negatively correlated with operating temperature. Industry data generally shows that for every 1°C increase in cell operating temperature, the photoelectric conversion efficiency decreases by 0.25% to 0.35%. Double-glass modules typically operate at temperatures of 50 to 65°C; high-temperature conditions directly lead to reduced power generation and accelerated module aging.

[0003] Chinese invention patent ZL202511511377.8 discloses a photovoltaic module with a reinforced passive heat dissipation structure. This photovoltaic module includes a photovoltaic panel assembly, a first fin group, and second fins. The first fin group consists of four parts: a first sub-fin, a second sub-fin, a third sub-fin, and a fourth sub-fin. The first fin groups are arranged in rows, and the second fins are arranged between adjacent first fin groups in each row. This solution provides a passive heat transfer method that effectively increases heat dissipation through unpowered natural convection and radiation heat transfer, achieving self-cooling of the photovoltaic module and thus improving its photoelectric conversion efficiency. However, if applied to double-glass photovoltaic modules, it will result in significant back-side shading, reducing the back-side power generation effect of the double-glass photovoltaic module. Summary of the Invention

[0004] The purpose of this application is to propose a double-glass photovoltaic module to solve the problem that the heat dissipation component blocks the back of the double-glass photovoltaic module during heat dissipation.

[0005] To solve the above-mentioned technical problems, the technical solution of this application is as follows:

[0006] A double-glass photovoltaic module according to this application includes: a laminate and a frame;

[0007] The laminate includes a glass cover layer, a first encapsulation layer, a battery array layer, a second encapsulation layer, and a glass backsheet layer stacked in sequence; the battery array layer includes multiple battery strings arranged in an array, and each battery string includes multiple battery cells arranged in series in sequence.

[0008] A flow-disrupting strip is provided on the side of the glass backplate layer away from the battery array layer; the flow-disrupting strip includes multiple first flow-disrupting strips, which are arranged around each battery string.

[0009] In some embodiments, the gap between two adjacent cells in a battery string is one of a positive gap, a zero gap, or a negative gap;

[0010] The deflector also includes multiple second deflectors, which are arranged in the gap or overlap position between two adjacent cells in the battery string. The multiple first deflectors and multiple second deflectors are arranged in a grid pattern.

[0011] The overlap width between the first baffle strip and each corresponding battery cell is no more than 3mm; the overlap width between the second baffle strip and each corresponding battery cell is no more than 3mm.

[0012] In some embodiments, the battery array layer further includes a busbar for connecting multiple battery strings; the battery strings further include interconnects for connecting individual battery cells within the battery strings.

[0013] In some embodiments, the cross-section of the first spoiler strip perpendicular to its length direction is rectangular; the side length of the rectangle parallel to the surface of the glass backing layer is 0.5mm to 5.0mm, and the side length of the rectangle perpendicular to the surface of the glass backing layer is 0.5mm to 20.0mm.

[0014] In some embodiments, the first baffle strip is provided with baffle holes, which penetrate the first baffle strip along the width direction and whose central axis is parallel to the surface of the glass backing layer.

[0015] In some embodiments, a plurality of auxiliary deflectors are disposed on the surface of the first deflector away from the glass backing layer, and the plurality of auxiliary deflectors are spaced apart along the length direction of the deflector.

[0016] In some embodiments, the longitudinal direction of the auxiliary spoiler is at an angle of 10° to 45° to the longitudinal direction of the spoiler strip;

[0017] The distance between two adjacent auxiliary spoilers is 5mm to 20mm.

[0018] In some embodiments, the cross-section of the auxiliary spoiler perpendicular to its length direction is one of a rectangle, trapezoid, semicircle, or streamline.

[0019] In some embodiments, the spoiler is made of a light-transmitting material.

[0020] In some embodiments, the spoiler is made of one of the following materials: glass, polyimide, epoxy resin composite material, silicone, ceramic, or modified engineering plastic.

[0021] The above-mentioned technical solution of this application has at least one of the following beneficial effects:

[0022] A double-glass photovoltaic module according to this application includes: a laminate and a frame; the laminate includes a glass cover layer, a first encapsulation layer, a cell array layer, a second encapsulation layer, and a glass backsheet layer stacked sequentially; the cell array layer includes multiple arrayed cell strings, each cell string including multiple cells connected in series; a baffle strip is provided on the side of the glass backsheet layer away from the cell array layer; the baffle strip includes multiple first baffle strips, which are arranged around each cell string. This application, by providing baffle strips on the outside of the glass backsheet layer, disrupts the air boundary layer of the glass backsheet layer, enhancing the heat dissipation effect of natural wind on the double-glass photovoltaic module, thereby effectively reducing the overall operating temperature and increasing power generation. Furthermore, the baffle strips arranged around the cell strings do not obstruct the projected area of ​​the cells, thus not affecting the cells' ability to receive sunlight and generate electricity. The baffle strip structure is simple, and the manufacturing and installation processes are simple and easy to implement, with low cost.

[0023] In addition, unless otherwise specified in the technical solution of this application, the technical solution can be implemented by conventional means in the field. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a double-glass photovoltaic module according to one embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a laminate according to one embodiment of this application;

[0027] Figure 3 This is a top view of a glass backing layer according to one embodiment of this application;

[0028] Figure 4 This is a top view of a glass backing layer according to one embodiment of this application;

[0029] Figure 5 This is a top view of a glass backing layer according to one embodiment of this application;

[0030] Figure 6 This is a cross-sectional view of a double-glass photovoltaic module according to one embodiment of this application;

[0031] Figure 7 This is a structural diagram of the first spoiler strip according to one embodiment of this application;

[0032] Figure 8 This is a cross-sectional view of the first spoiler strip according to one embodiment of this application;

[0033] Figure 9 This is a cross-sectional view of a double-glass photovoltaic module according to one embodiment of this application;

[0034] Figure 10 This is a schematic diagram of the structure of an auxiliary spoiler according to one embodiment of this application;

[0035] Figure 11 This is a schematic diagram of the shape of an auxiliary spoiler according to one embodiment of this application.

[0036] Explanation of the labels in the attached drawings:

[0037] Laminate 1000; Glass cover layer 100; First encapsulation layer 200; Battery array layer 300; Second encapsulation layer 400; Glass backplate layer 500; Baffle strip 600; First baffle strip 610; Baffle hole 611; Second baffle strip 620; Auxiliary baffle 630; Frame 2000. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this application, and are used merely to explain this application and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "both ends," "both sides," "bottom," and "top," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" can be simply used to more clearly distinguish different components, and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] See Figures 1-2 The diagram schematically illustrates a double-glass photovoltaic module provided by an embodiment of this application, comprising: a laminate 1000 and a frame 2000. The frame 2000 may be made of aluminum alloy, steel, or a resin frame.

[0042] like Figure 2 As shown, the laminate 1000 includes a glass cover layer 100, a first encapsulation layer 200, a battery array layer 300, a second encapsulation layer 400, and a glass backplate layer 500 stacked sequentially. The battery array layer 300 includes a plurality of battery strings 310 arranged in an array, and each battery string 310 includes a plurality of battery cells 311 arranged in series.

[0043] The glass cover layer 100 and glass backsheet layer 500 can be made of photovoltaic glass or photovoltaic transparent polymer board, while the first encapsulation layer 200 and the second encapsulation layer 400 can be made of one of the following: EVA film, POE film, EVA / POE composite film, EVA / POE / EVA composite film, or POE / EVA / POE composite film. The laminate 1000 melts the films of the first encapsulation layer 200 and the second encapsulation layer 400 through a lamination process, bonding the front and rear layers together to form a strong structural support for the battery array layer 300. Furthermore, the glass cover layer 100, the first encapsulation layer 200, the second encapsulation layer 400, and the glass backsheet layer 500 of the laminate 1000 all have high light transmittance, allowing both sides of the battery array layer 300 to absorb light energy and generate electricity.

[0044] like Figure 3 , Figure 4 , Figure 5 As shown, a baffle 600 is provided on the side of the glass backplate layer 500 away from the battery array layer 300. The baffle 600 includes a plurality of first baffles 610, which are arranged around each battery string 310.

[0045] The baffles 600 are evenly distributed around each battery string 310 on the outer surface of the glass backsheet layer 500, forming an array-shaped baffle structure. When external airflow blows towards the glass backsheet layer 500, the baffles 600 can disrupt the laminar air boundary layer on the surface of the glass backsheet layer 500, creating airflow disturbance, increasing the convective heat transfer coefficient, and accelerating the heat dissipation of the battery string 310. The heat dissipation structure formed by the baffles 600 is a passive structure that does not require external power equipment and can achieve efficient heat dissipation by relying solely on natural airflow.

[0046] Furthermore, the design of the deflector strip 600 can be directly adapted to the lamination and encapsulation processes of conventional double-glass photovoltaic modules without modifying existing production lines. Only a fixing step for the deflector strip 600 needs to be added during the processing of the glass backsheet layer 500, making the production process simple and easy to implement. The deflector strip offers flexible material selection, allowing for the use of low-cost, highly weather-resistant materials, resulting in extremely low material and processing costs. This allows double-glass photovoltaic modules to improve heat dissipation while controlling overall costs.

[0047] In some embodiments, such as Figure 4 and Figure 5 As shown, the gap between two adjacent battery cells 311 in the battery string 310 is one of a positive gap, a zero gap, or a negative gap. The deflector 600 also includes a plurality of second deflectors 620, which are arranged corresponding to the gaps or overlaps between two adjacent battery cells 311 in the battery string 310. The plurality of first deflectors 610 and the plurality of second deflectors 620 are arranged in a grid pattern.

[0048] The overlap width between the first baffle 610 and its corresponding battery cell 311 is no greater than 3mm; the overlap width between the second baffle 620 and its corresponding battery cell 311 is no greater than 3mm.

[0049] Specifically, such as Figure 4 and Figure 6 As shown, Figure 4 This is a top view of the glass backing layer 500. Figure 6 This is a cross-sectional view of the laminate 1000 taken through the battery cell 311 along the extension direction of the battery string 310. Figure 4 and Figure 6 In the schematic battery string 310, the gap between two adjacent battery cells 311 is a positive gap. The second deflector strip 620 is arranged corresponding to the gap between adjacent battery cells 311 in the battery string 310, that is, the second deflector strip 620 is set on the orthogonal projection area of ​​the gap between two adjacent battery cells 311 on the glass back sheet layer 500. Preferably, the second deflector strip 620 is set at the center of the corresponding gap.

[0050] It should be noted that, Figure 6 This is only a schematic diagram of the cross-sectional structure of the laminate 1000 and does not constitute a limitation on the actual size and proportion of the laminate 1000.

[0051] Specifically, such as Figure 5 As shown, the gap between two adjacent battery cells 311 in the battery string 310 is either zero gap or negative gap. Zero gap means the edges of two adjacent battery cells 311 in the battery string 310 are joined together without any gap. Negative gap means the edges of two adjacent battery cells 311 overlap, forming a shingled state. The second deflector strip 620 is arranged corresponding to the overlapping position of adjacent battery cells 311 in the battery string 310; that is, the second deflector strip 620 is positioned on the orthogonal projection area of ​​the glass backsheet layer 500 at the overlapping position of two adjacent battery cells 311. Preferably, the second deflector strip 620 is positioned centrally at the corresponding overlapping position.

[0052] In this embodiment, a second baffle strip 620 is arranged at the corresponding position of the gap in the battery string 310, which can enhance the heat dissipation effect of the battery string 310, while minimizing the obstruction of the battery cell 311.

[0053] In addition, such as Figure 3 As shown, if the gap between two adjacent battery cells 311 in the battery string 310 is zero or negative, the second baffle 620 may not be provided in the area corresponding to the battery string 310, and the battery string 310 can dissipate heat solely by relying on the first baffle 610 surrounding it.

[0054] In some embodiments, the battery array layer 300 further includes a busbar for connecting multiple battery strings 310; the battery strings 310 further include interconnects for connecting individual battery cells 311 of the battery strings 310. The interconnects can collect the current generated by the battery cells 311, and the busbar can collect the current generated by the battery strings 310. The busbar, interconnects, and battery array layer 300 are encapsulated together in a laminate 1000.

[0055] In some embodiments, such as Figure 7 As shown, the cross-section of the first spoiler 610 perpendicular to its length direction is rectangular. The side length of the rectangle parallel to the surface of the glass backing layer 500 is 0.5mm to 5.0mm, and the side length of the rectangle perpendicular to the surface of the glass backing layer 500 is 0.5mm to 20.0mm.

[0056] The first baffle strip 610, with its rectangular cross-section, is simple to manufacture and easy to fix onto the glass backing layer 500. The vertical surface of the rectangular cross-section can effectively disrupt the airflow, creating turbulence and significantly disrupting the airflow boundary layer.

[0057] Similarly, the second spoiler 620 can also use a rectangular cross section, with the side length of the rectangle perpendicular to the surface of the glass backing layer 500 being 0.5mm to 20.0mm.

[0058] In some embodiments, such as Figure 8 and Figure 9As shown, Figure 8 This is a schematic diagram of the structure of the first spoiler 610. Figure 9 This is a cross-sectional view of the laminate 1000 taken at the interval between two battery strings 310 along the extension direction of the battery string 310. A turbulence hole 611 is provided on the first turbulence strip 610. The turbulence hole 611 penetrates the first turbulence strip 610 along the width direction of the first turbulence strip 610 and its central axis is parallel to the surface of the glass backing layer 500.

[0059] When the airflow blows in the direction perpendicular to the glass back plate layer 500 on the side of the first deflector 610, some of the airflow will pass through the deflector hole 611 and form a jet effect on the leeward side of the first deflector 610, further disturbing the airflow on the other side and enhancing the heat dissipation effect in the leeward area.

[0060] It should be noted that, Figure 9 This is only a schematic diagram of the cross-sectional structure of the laminate 1000 and does not constitute a limitation on the actual size and proportion of the laminate 1000.

[0061] Similarly, a perforation hole 611 extending through its width can also be provided on the second perforation strip 620.

[0062] In some embodiments, such as Figure 10 As shown, a plurality of auxiliary deflectors 630 are provided on the surface of the first deflector strip 610 away from the glass back plate layer 500, and the plurality of auxiliary deflectors 630 are distributed at intervals along the length direction of the deflector strip 600.

[0063] When the airflow flows along the length of the first spoiler 610, the auxiliary spoiler 630 interrupts the airflow along the length of the first spoiler 610, creating secondary turbulence and generating micro-vortices, which significantly improves the heat transfer coefficient. The spaced distribution of the auxiliary spoilers 630 can avoid excessive airflow resistance.

[0064] In some embodiments, the longitudinal direction of the auxiliary spoiler 630 is at an angle of 10° to 45° to the longitudinal direction of the spoiler strip 600. The distance between two adjacent auxiliary spoilers 630 is 5 mm to 20 mm.

[0065] The auxiliary spoiler 630, tilted at 10° to 45° relative to the spoiler strip 600, can cause the airflow to deflect laterally, forming a spiral-shaped airflow. This type of spoiler has less wind resistance than the vertical direction and a more significant spoiler effect than the parallel direction. It is the optimal angle for experimental verification and more effectively disrupts the boundary layer in all directions.

[0066] In some embodiments, such as Figure 11 As shown, the cross-section of the auxiliary spoiler 630 perpendicular to its length direction is one of a rectangle, trapezoid, semicircle, or streamline.

[0067] The sharp edges of rectangular and trapezoidal shapes can generate strong turbulence with high disturbance intensity, but they also have high wind resistance, making them suitable for areas with low wind speeds. Semi-circular and streamlined shapes have low wind resistance and smooth airflow transitions, making them suitable for areas with high wind speeds. Furthermore, streamlined shapes can reduce fatigue damage to double-glass photovoltaic modules caused by long-term wind vibration. Experimental verification has shown that streamlined shapes offer the best heat dissipation efficiency among these options.

[0068] In some embodiments, the spoiler 600 is made of a light-transmitting material. Using a light-transmitting material can further reduce the potential obstruction of light incident on the back of the battery array layer 300 by the spoiler 600.

[0069] Furthermore, if the deflection strip 600 of the light-transmitting material is made of a material with the same refractive index as the glass backing layer 500, or is made of the same material as the glass backing layer 500, light reflection can be reduced and the utilization rate of light energy can be improved.

[0070] In some embodiments, the spoiler 600 is made of one of the following materials: glass, polyimide, epoxy resin composite material, silicone, ceramic, or modified engineering plastic.

[0071] Glass offers excellent light transmittance, has a thermal expansion coefficient close to that of the glass backing layer 500, good compatibility with the laminate 1000, and superior UV and aging resistance. Polyimide and epoxy resin composites offer advantages such as light weight, high strength, and high temperature resistance, making them suitable for injection molding. Silicone provides good flexibility, allowing it to adhere to the outer surface of the glass backing layer 500, facilitating manufacturing and making it suitable for high-vibration environments. Ceramic has high thermal conductivity, combining turbulence and thermal conduction functions for synergistic heat dissipation. Modified engineering plastics are inexpensive and easy to process. In practical applications, the selection of materials should be based on a comprehensive consideration of their heat dissipation performance, cost, and durability.

[0072] In summary, the double-glass photovoltaic module proposed in this application includes: a laminate 1000 and a frame 2000; the laminate 1000 includes a glass cover layer 100, a first encapsulation layer 200, a cell array layer 300, a second encapsulation layer 400, and a glass backsheet layer 500 stacked sequentially; the cell array layer 300 includes a plurality of arrayed cell strings 310, each cell string 310 including a plurality of cell cells 311 arranged in series; the side of the glass backsheet layer 500 away from the cell array layer 300 is provided with a baffle 600; the baffle 600 includes a plurality of first baffles 610, which are arranged around each cell string 310 respectively. The baffle strips 600, positioned on the outer side of the glass backsheet layer 500, disrupt the air boundary layer of the glass backsheet layer 500, allowing airflow to fully diffuse and flow within the glass backsheet layer 500. This enhances the heat dissipation effect of natural wind on the double-glass photovoltaic module, effectively reducing the overall operating temperature and increasing the power generation of the double-glass photovoltaic module. Furthermore, the first baffle strip 610 is arranged around the cell string 310, and the second baffle strip 620 is positioned at the gaps or overlaps of the cell 311, avoiding or minimizing shading of the projected area of ​​the cell 311, thus not affecting the cell's ability to receive sunlight and generate electricity. The baffle strip 600 has a simple structure, and its manufacturing and installation processes are simple and easy to implement, resulting in low cost. Verification has shown that under conditions of level 2-6 natural winds and airflow direction blowing the glass backsheet 500 at an angle of 15°-90° to the glass backsheet layer 500, the overall operating temperature of the double-glass photovoltaic module can be reduced by 3-6°C, corresponding to an increase in power generation of 1.05%-2.4% and a long-term increase in power generation of 0.9%-2%, effectively mitigating the loss of power generation at high temperatures in double-glass photovoltaic modules.

[0073] Based on the various embodiments of this application described above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0074] The above descriptions are merely some embodiments of this application, used only to illustrate the technical solutions of this application, and not to limit it. It should be understood that those skilled in the art can make improvements or substitutions based on the above descriptions without departing from the inventive concept of this application, and all such improvements and substitutions should fall within the protection scope of this application. In this case, all details can be replaced with equivalent elements, and materials, shapes, and sizes can also be arbitrary.

Claims

1. A double-glass photovoltaic module, characterized in that, include: Laminate (1000) and frame (2000); The laminate (1000) includes a glass cover layer (100), a first encapsulation layer (200), a battery array layer (300), a second encapsulation layer (400), and a glass backplate layer (500) stacked in sequence; the battery array layer (300) includes a plurality of battery strings (310) arranged in an array, and each battery string (310) includes a plurality of battery cells (311) arranged in series in sequence. The glass backplate layer (500) has a baffle strip (600) on the side away from the battery array layer (300); the baffle strip (600) includes a plurality of first baffle strips (610), and the plurality of first baffle strips (610) are arranged around each of the battery strings (310).

2. The double-glass photovoltaic module according to claim 1, characterized in that, The gap between two adjacent battery cells (311) in the battery string (310) is one of a positive gap, a zero gap, or a negative gap; The deflector strip (600) further includes a plurality of second deflector strips (620), which are arranged in relation to the gap or overlap between two adjacent battery cells (311) in the battery string (310). The plurality of first deflector strips (610) and the plurality of second deflector strips (620) are arranged in a grid pattern. The overlap width between the first baffle strip (610) and each of the corresponding battery cells (311) is no greater than 3 mm; the overlap width between the second baffle strip (620) and each of the corresponding battery cells (311) is no greater than 3 mm.

3. The double-glass photovoltaic module according to claim 1, characterized in that, The battery array layer (300) further includes a busbar for connecting multiple battery strings (310); the battery strings (310) further include an interconnection band for connecting individual battery cells (311) of the battery strings (310).

4. The double-glass photovoltaic module according to claim 1, characterized in that, The first spoiler strip (610) has a rectangular cross-section perpendicular to its length direction; the side length of the rectangle parallel to the surface of the glass backing layer (500) is 0.5mm to 5.0mm, and the side length of the rectangle perpendicular to the surface of the glass backing layer (500) is 0.5mm to 20.0mm.

5. The double-glass photovoltaic module according to claim 4, characterized in that, The first deflector strip (610) is provided with a deflector hole (611), which penetrates the first deflector strip (610) along the width direction and its central axis is parallel to the surface of the glass backing layer (500).

6. The double-glass photovoltaic module according to claim 4, characterized in that, The first deflector strip (610) has a plurality of auxiliary deflectors (630) disposed on the surface away from the glass back plate layer (500), and the plurality of auxiliary deflectors (630) are spaced apart along the length direction of the deflector strip (600).

7. The double-glass photovoltaic module according to claim 6, characterized in that, The length direction of the auxiliary spoiler (630) is at an angle of 10° to 45° to the length direction of the spoiler strip (600); The distance between two adjacent auxiliary spoilers (630) is 5mm to 20mm.

8. The double-glass photovoltaic module according to claim 6, characterized in that, The cross-section of the auxiliary spoiler (630) perpendicular to its length direction is one of rectangle, trapezoid, semicircle or streamline.

9. The double-glass photovoltaic module according to claim 1, characterized in that, The spoiler strip (600) is made of a light-transmitting material.

10. The double-glass photovoltaic module according to claim 1, characterized in that, The spoiler strip (600) is made of one of the following materials: glass, polyimide, epoxy resin composite material, silicone, ceramic, or modified engineering plastic.

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