Photovoltaic module

Abstract

The utility model relates to a photovoltaic module which comprises a laminated part and a frame, the frame is fixedly connected to the edge of the laminated part, the part, close to the frame, of the laminated part is provided with a hole opening area, and in the thickness direction of the laminated part, the hole opening area is provided with a through hole penetrating through the hole opening area. When the photovoltaic module is used, the laminated piece is obliquely arranged, namely, one end, with the through hole, of the laminated piece is used as the bottom of the laminated piece. When it rains or water is used for flushing the photovoltaic module, water can carry dust to flow out from the through hole, the water and the dust are prevented from being accumulated in the photovoltaic module, water and dust accumulation of the photovoltaic module can be prevented, and the problems of power generation amount reduction and hot spot effect caused by dust or water shielding of the photovoltaic module are solved. Besides, the through holes are directly arranged on the laminated piece, so that the fixing stability between the frame and the laminated piece is not damaged, and the mechanical strength of the laminated piece is not influenced, thereby ensuring the reliability of the photovoltaic module used outdoors.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to a photovoltaic module. Background Technology

[0002] Solar photovoltaic (PV) modules (also called solar panels) are the core and most important part of a solar power generation system. A PV module is made up of several individual solar cells connected in series and parallel, and then tightly sealed with a panel assembly. The function of a PV module is to convert solar energy into electrical energy and send it to a battery for storage or to power a load.

[0003] A photovoltaic (PV) module consists of a laminate and a frame for mounting the laminate. The laminate comprises the PV cell itself and the panel assembly. The PV cell is composed of solar cells connected in series and parallel. The panel assembly protects the PV cell and includes a front glass panel, encapsulating film, and a backsheet or back glass panel. After processing, the panel assembly is tightly sealed to the PV cell to form the laminate. The laminate is typically secured by a frame, and the gap between the frame and the laminate is filled with silicone resin to increase the strength of the PV module and help extend its lifespan. The frame is often made of aluminum alloy, which has high strength and strong resistance to mechanical impact.

[0004] Generally, photovoltaic (PV) modules are installed at an angle by a frame and matching mounting brackets, but the angle is usually not too large, and most of the frame surface is higher than the laminate surface, leaving the laminate surface at the bottom of the groove enclosed by the frame. After prolonged use, PV modules are exposed to wind and sun outdoors, especially in windy, dusty areas, causing dust to accumulate on their surface. Rainwater washes away this dust, which then accumulates near the frame and the bottom of the laminate, shading it. This not only affects the power generation efficiency of the PV modules but can also cause hot spots, leading to overheating and other safety hazards. Utility Model Content

[0005] Therefore, it is necessary to provide a photovoltaic module that can prevent water and dust accumulation.

[0006] A photovoltaic module includes a laminate and a frame, the frame being fixedly connected to the edge of the laminate, and the portion of the laminate near the frame having an opening area.

[0007] In the thickness direction of the laminate, the opening area is provided with a through hole that penetrates the opening area.

[0008] In one embodiment, the laminate includes a busbar and a front panel, a battery cell, and a back panel stacked sequentially from top to bottom. The battery cell is connected to the busbar, and both the battery cell and the busbar are sandwiched between the front panel and the back panel.

[0009] The battery cell and the busbar are not installed in the opening area, and the through hole penetrates the front panel and the back panel located in the opening area.

[0010] In one embodiment, the opening area extends along one edge of the laminate, and the opening area is provided with a plurality of through holes, which are spaced apart along the length of the opening area.

[0011] In one embodiment, the width of the opening area is 25 mm to 100 mm.

[0012] In one embodiment, the through hole is circular, polygonal, elliptical, or rhomboid.

[0013] In one embodiment, the through hole is circular, and the diameter of the through hole is 9 mm to 20 mm.

[0014] In one embodiment, the distance between the through hole and the busbar is greater than 10 mm.

[0015] In one embodiment, the through hole is tangent to the frame.

[0016] In one embodiment, the through hole is located between the battery cell and the frame, and the through hole is located below the center of the battery cell.

[0017] In one embodiment, the through-hole is located below the middle of adjacent battery cells.

[0018] Compared to existing technologies, the photovoltaic module provided in this application features an opening area on the laminate near the frame, with through holes within this area. When using this photovoltaic module, the laminate is tilted, with the end of the laminate containing the through hole serving as the tilted bottom of the laminate, and the through hole located at the bottom of the photovoltaic module. When dust accumulates on the photovoltaic module, it flows towards the bottom of the module under gravity and exits through the through hole, preventing dust accumulation. Similarly, when it rains or is washed with water, the water carries the dust out through the through hole, preventing water and dust from accumulating in the photovoltaic module. This prevents water and dust accumulation, thus avoiding reduced power generation and hot spot effects caused by dust or water blockage. Furthermore, directly placing the through hole on the laminate does not compromise the stability between the frame and the laminate, nor does it affect the mechanical strength of the laminate, ensuring the reliability of the photovoltaic module for outdoor use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a photovoltaic module according to an embodiment of this application.

[0021] Figure label:

[0022] 1. Photovoltaic module; 10. Laminated component; 11. Opening area; 12. Through hole; 13. Busbar; 20. Frame. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figure 1 This application provides a photovoltaic module 1, including a laminate 10 and a frame 20. The frame 20 is fixedly connected to the edge of the laminate 10. The portion of the laminate 10 near the frame 20 is provided with an opening area 11. In the thickness direction of the laminate 10, the opening area 11 is provided with a through hole 12 penetrating the opening area 11.

[0029] It is understandable that by providing an opening area 11 on the laminate 10 near the frame 20, and providing a through hole 12 in the opening area 11, when using the photovoltaic module 1, the laminate 10 is tilted, that is, the end of the laminate 10 with the through hole 12 is used as the tilted bottom, and the through hole 12 is located at the bottom of the photovoltaic module 1. When dust accumulates on the photovoltaic module 1, the dust will flow towards the bottom of the photovoltaic module 1 under the action of gravity and flow out through the through hole 12, thereby preventing dust accumulation in the photovoltaic module 1; when it rains or the photovoltaic module 1 is washed with water, the water can carry the dust out through the through hole 12, preventing water and dust from accumulating in the photovoltaic module 1, thereby preventing water and dust accumulation in the photovoltaic module 1, and thus avoiding the problems of reduced power generation and hot spot effect caused by dust or water blocking the photovoltaic module 1. Furthermore, by directly setting the through hole 12 on the laminate 10, the fixed stability between the frame 20 and the laminate 10 is not compromised, nor is the mechanical strength of the laminate 10 affected, thus ensuring the reliability of the photovoltaic module 1 for outdoor use.

[0030] It is understood that the laminate 10 in this embodiment is rectangular, and an opening area 11 can be provided on each side of the laminate 10, with a through hole 12 provided in each opening area 11. Thus, when the photovoltaic module 1 including the laminate 10 is installed at an angle, the position of the through hole 12 does not need to be considered; the photovoltaic module 1 can be installed directly at an angle. In other embodiments, the opening area 11 can be provided on some sides of the laminate 10, or only on one side of the laminate 10, with a through hole 12 provided in that opening area 11. This application does not impose any limitations on this.

[0031] Furthermore, multiple through holes 12 can be provided in one opening area 11, or multiple opening areas 11 can be provided on one side of the laminate 10, with one through hole 12 provided in each opening area 11. This makes the arrangement of opening areas 11 and through holes 12 on the laminate 10 more flexible and can improve the universality of photovoltaic module 1.

[0032] Furthermore, the through hole 12 can be a circular, polygonal, elliptical, rhomboid, or other shape, and this application does not impose any restrictions on this.

[0033] In one embodiment, the laminate 10 includes a busbar 13 and a front panel, solar cells, and a back panel stacked sequentially from top to bottom. The solar cells and busbar 13 are interconnected, and both the solar cells and busbar 13 are sandwiched between the front panel and the back panel. No solar cells or busbar 13 are disposed in the opening area 11, and a through hole 12 penetrates the front panel and back panel located in the opening area 11. Since both the solar cells and busbar 13 are electrically powered components, keeping the opening area 11 away from the solar cells and busbar 13 prevents water from approaching the solar cells or busbar 13 through the through hole 12, thus preventing short circuits and ensuring the safe use of the photovoltaic module 1.

[0034] In one embodiment, the opening area 11 extends along one edge of the laminate 10, and the opening area 11 has a plurality of through holes 12, which are spaced apart along the length of the opening area 11. That is, the opening area 11 is only provided on one side of the laminate 10, and only a portion of the laminate 10 needs to be designated as the opening area 11, while the other areas are used to install solar cells. In this way, as many solar cells as possible can be installed, increasing the total light-receiving area of ​​the solar cells and thus improving the power generation efficiency of the photovoltaic module 1.

[0035] In one embodiment, the width of the opening area 11 is 25mm to 100mm. If the width of the opening area 11 is less than 25mm, the creepage distance between the through hole 12 and the busbar 13 will be too small, thus posing a safety hazard. If the width of the opening area 11 is greater than 100mm, it will occupy too much of the area on the laminate 10 where the solar cells can be installed, which is equivalent to reducing the total light-receiving area of ​​the solar cells and affecting the power generation efficiency of the photovoltaic module 1. Therefore, the width of the opening area 11 in this embodiment is more appropriate. In this embodiment, the width of the opening area 11 is 25mm to 100mm, which ensures that the through hole 12 and the busbar 13 have sufficient creepage distance without affecting the installation of the solar cells in the laminate 10. It should be explained that, taking the setting of the opening area 11 along the long edge of the laminate 10 as an example, the width of the opening area 11 refers to the distance of the solar cell closest to that long edge of the laminate 10 from that long edge. That is to say, the width direction of the opening area 11 is consistent with the width direction of the laminate 10. It is understood that when the photovoltaic module 1 is installed at an angle, the longer side is used as the bottom edge after the angle. Schematic, the width of the opening area 11 can also be 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, or any combination of these values; this application does not impose any limitation on this.

[0036] In one embodiment, the through-hole 12 is circular, polygonal, elliptical, or rhomboid. This improves the versatility of the photovoltaic module 1.

[0037] In one embodiment, the through-hole 12 is circular, with a diameter of 9mm to 20mm. It is understood that if the diameter of the through-hole 12 is less than 9mm, dust and water will have difficulty passing through, causing them to accumulate on the surface of the photovoltaic module 1. If the diameter of the through-hole 12 is greater than 20mm, a wider opening area 11 is required, which would excessively occupy the area on the laminate 10 where solar cells can be installed. Therefore, the diameter of the through-hole 12 in this embodiment is very appropriate. This embodiment directly sets the through-hole 12 to 9mm to 20mm, thus ensuring that dust and water can flow out through the through-hole 12 without affecting the installation of the solar cells within the laminate 10. Illustratively, the diameter of the through-hole 12 can also be 10mm, 12mm, 14mm, 16mm, 18mm, or any combination of these values; this application does not impose any limitations on this.

[0038] In one embodiment, the busbar 13 is disposed on the side of the solar cell near the opening area 11, and the distance between the through hole 12 and the busbar 13 is greater than 10mm. This ensures that the distance between the lower edge of the busbar 13 and the upper edge of the through hole 12 is greater than the creepage distance, thereby avoiding electrical safety issues and improving the safety of the photovoltaic module 1.

[0039] In one embodiment, the through-hole 12 is tangent to the frame 20. By reducing the distance between the through-hole 12 and the frame 20, the width of the open area can be reduced, allowing other areas on the laminate 10 to be used for mounting solar cells, thereby increasing the total light-receiving area of ​​the solar cells and improving the power generation efficiency of the photovoltaic module 1.

[0040] In one embodiment, the through-hole 12 is located between the solar cell and the frame 20, and is positioned below the center of the solar cell. The solar cells are arranged in a rectangle between the front panel and the back panel. By positioning the through-hole 12 below the center of the solar cell, the solar cells are evenly spaced, which makes the photovoltaic module 1 more aesthetically pleasing.

[0041] In one embodiment, the through-hole 12 is located below the center of adjacent solar cells. The solar cells are arranged in a rectangle between the front panel and the back panel. By placing the through-hole 12 below the center of adjacent solar cells, the solar cells are arranged at equal intervals, which makes the photovoltaic module 1 more aesthetically pleasing.

[0042] Furthermore, there are multiple through holes 12. Some through holes 12 are located below the center of the solar cell, and other through holes 12 are located below the center of adjacent solar cells. This improves the flexibility of the through hole 12 location and makes the photovoltaic module 1 more universal.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A photovoltaic module, comprising a laminate and a frame, wherein the frame is fixedly connected to the edge of the laminate, characterized in that, The portion of the laminate near the frame has an opening area. In the thickness direction of the laminate, the opening area is provided with a through hole that penetrates the opening area.

2. The photovoltaic module according to claim 1, characterized in that, The laminate includes a busbar and a front panel, a battery cell, and a back panel stacked sequentially from top to bottom. The battery cell is connected to the busbar, and both the battery cell and the busbar are sandwiched between the front panel and the back panel. The battery cell and the busbar are not installed in the opening area, and the through hole penetrates the front panel and the back panel located in the opening area.

3. The photovoltaic module according to claim 2, characterized in that, The opening area extends along one edge of the laminate, and the opening area is provided with a plurality of through holes, which are spaced apart along the length of the opening area.

4. The photovoltaic module according to claim 2, characterized in that, The width of the opening area is 25mm to 100mm.

5. The photovoltaic module according to claim 2, characterized in that, The through hole can be circular, polygonal, elliptical, or rhomboid.

6. The photovoltaic module according to claim 5, characterized in that, The through hole is circular, and the diameter of the through hole is 9mm to 20mm.

7. The photovoltaic module according to claim 5, characterized in that, The distance between the through hole and the busbar is greater than 10 mm.

8. The photovoltaic module according to claim 5, characterized in that, The through hole is tangent to the frame.

9. The photovoltaic module according to claim 5, characterized in that, The through hole is located between the battery cell and the frame, and the through hole is located below the center of the battery cell.

10. The photovoltaic module according to claim 5, characterized in that, The through hole is located below the middle of the adjacent battery cells.

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