A gap film high power photovoltaic module

Abstract

The utility model discloses a kind of gap film-pasting high-power photovoltaic modules, including frame, frame inner side is equipped with the glass panel of sequentially laminated setting, upper glue film, battery piece group, lower glue film and glass backboard, gap film-pasting is provided between battery piece group and lower glue film.The gap film-pasting of utility model setting can reflect the light of the gap between battery piece, the part of light is reflected to battery piece, so as to improve the power generation efficiency of photovoltaic module;Gap film-pasting is close to the bottom surface of battery piece group, can directly reflect the light of the gap, since light does not pass through lower glue film, can reduce the loss of light, increase the amount of light reflected to battery piece, further improve the power generation efficiency of photovoltaic module.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic module technology, and in particular relates to a high-power photovoltaic module with gap-film bonding. Background Technology

[0002] Photovoltaic modules are the core and most important part of a solar power generation system, and their core function is to convert solar energy into electrical energy.

[0003] In existing photovoltaic modules, the gaps between cells are divided into cell spacing and string spacing. Currently, the conventional cell spacing is 0.1-2mm and the string spacing is 0.1-4mm. Light that shines into these gaps will directly penetrate the photovoltaic module and cannot be absorbed by the cells, resulting in a complete waste of this light energy and affecting the power generation efficiency of the photovoltaic module.

[0004] Therefore, it is necessary to improve the photovoltaic modules in the existing technology. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a high-power photovoltaic module with gap-film bonding to improve the power generation efficiency of the photovoltaic module.

[0006] To achieve the above objectives, the specific technical solution of the gap-film-coated high-power photovoltaic module of this utility model is as follows: A high-power photovoltaic module with gap film includes a frame, on the inner side of which a glass panel, an upper adhesive film, a cell assembly, a lower adhesive film, and a glass back sheet are sequentially stacked. A gap film is provided between the cell assembly and the lower adhesive film.

[0007] Preferably, in order to support the normal power generation of the photovoltaic module, the cell array includes multiple cells arranged in an array, wherein the cells are connected in series or in parallel, and there is a first gap between two adjacent cells.

[0008] Preferably, in order to improve the power generation efficiency of the photovoltaic module, the gap film has a mesh structure and covers the first gap.

[0009] Preferably, in order to further improve the power generation efficiency of the photovoltaic module, there is a second gap between the solar cell and the frame, and the gap is covered by a film.

[0010] Preferably, in order to improve the light transmittance of the glass panel and reduce light loss, the glass panel is ultra-clear tempered glass.

[0011] Preferably, in order to increase the light transmittance of the glass panel, the side of the glass panel away from the battery cell assembly has a textured surface, and the side of the glass panel adjacent to the battery cell assembly is a smooth surface.

[0012] Preferably, in order to improve the heat dissipation performance of the photovoltaic module, a thermally conductive layer is provided on the side of the gap film facing away from the cell array.

[0013] Preferably, in order to achieve the thermal conductivity effect of the thermally conductive layer, the thermally conductive layer is a thermally conductive silicone rubber layer.

[0014] The gap-film high-power photovoltaic module of this invention has the following advantages: the gap film can reflect light that penetrates the gap between the cells and reflect this light back onto the cells, thereby improving the power generation efficiency of the photovoltaic module; the gap film is set close to the bottom surface of the cell array and can directly reflect light that penetrates the gap. Since the light does not pass through the undercoating film, light loss can be reduced, increasing the amount of light reflected onto the cells and further improving the power generation efficiency of the photovoltaic module. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the photovoltaic module of this utility model; Figure 2 This is an exploded view of the photovoltaic module of this utility model; Figure 3 This is a schematic diagram of the gap-attached film structure of this utility model; The markings in the diagram are as follows: 1. Frame; 2. Glass panel; 3. Top adhesive film; 4. Battery cell assembly; 5. Gap film; 6. Bottom adhesive film; 7. Glass backplate; 8. Thermal conductive layer; 401. Battery cell. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0017] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the photovoltaic module and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] A high-power photovoltaic module with gap film includes a frame 1. A glass panel 2, an upper adhesive film 3, a cell group 4, a lower adhesive film 6, and a glass backplate 7 are sequentially stacked on the inner side of the frame 1. A gap film 5 is provided between the cell group 4 and the lower adhesive film 6. The cell group 4 includes a plurality of cells 401 distributed in an array. The cells 401 are connected in series or in parallel, and there is a first gap between two adjacent cells 401.

[0019] The structure of the above photovoltaic module is as follows Figure 1 and 2 As shown, the gap film 5 is a reflective film that reflects light that shines on it. When the photovoltaic module is working, the light that penetrates the first gap is reflected by the gap film 5 and reaches the cell 401, which can improve the power generation efficiency of the cell 401 and thus increase the power output of the photovoltaic module. Compared with the existing photovoltaic modules that place the gap film 5 between the lower adhesive film 6 and the glass backplate 7, in this photovoltaic module, the gap film 5 is directly placed on the back of the cell 401, so that the gap film 5 can directly reflect the light that penetrates the gap between the cells 401. Since the light does not pass through the lower adhesive film 6, the loss of light by the lower adhesive film 6 can be reduced, and the amount of reflected light that actually reaches the cell 401 can be increased, so as to further improve the power generation efficiency of the photovoltaic module.

[0020] Further improvements include, for example Figure 2 As shown, there is a second gap between the battery cell 401 and the frame 1, and the gap film 5 has a grid structure and covers the first gap and the second gap.

[0021] In the aforementioned photovoltaic module, the gap film 5 is set into a grid structure and only covers the first and second gaps, which can reduce the amount of gap film 5 used and reduce the production cost of the photovoltaic module. The width of the gap film is greater than the width of the first and second gaps, so that it has a larger reflective area after covering the first and second gaps to reflect light, thereby increasing the amount of reflected light reflected to the solar cell 401 through the gap film 5, so as to improve the power generation efficiency of the photovoltaic module.

[0022] A further improvement is that the glass panel 2 is made of ultra-clear tempered glass; the side of the glass panel 2 facing away from the solar cell group 4 has a textured surface, while the side of the glass panel 2 adjacent to the solar cell group 4 is smooth. Ultra-clear tempered glass not only has high strength and strong impact resistance, effectively protecting the photovoltaic module, but also has ultra-high light transmittance, allowing more light to pass through the glass panel 2 and reach the solar cell 401, thereby improving the power generation efficiency of the photovoltaic module. The textured surface of the glass panel 2 creates an uneven surface, reducing specular reflection and allowing light from more angles to enter the photovoltaic module, further improving its power generation efficiency. The back of the glass panel 2, the side where the adhesive film 3 is attached, is a normal smooth surface. Thus, light reflected by the gap film 5 can be reflected again through this smooth surface to reach the front of the solar cell 401, improving the power generation efficiency of the solar cell 401 and ultimately increasing the power output of the photovoltaic module.

[0023] Further improvements include, for example Figure 3As shown, a thermally conductive layer 8 is provided on the side of the gap film 5 facing away from the solar cell assembly 4. The thermally conductive layer 8 is a thermally conductive silicone rubber layer. Thermally conductive silicone rubber is a polymer material made by adding specific thermally conductive fillers to silicone rubber. It has excellent thermal conductivity, electrical insulation and temperature resistance. Through the thermally conductive layer 8, the heat on the solar cell assembly 4 can be conducted to the frame 1 of the photovoltaic module. Then, the frame 1 exchanges heat with the air, thereby improving the heat dissipation efficiency of the solar cell assembly 4 and improving the stability of the photovoltaic module.

[0024] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A high-power photovoltaic module with gap-mounted film, characterized in that: The device includes a frame (1), on the inner side of which are installed a glass panel (2), an upper adhesive film (3), a battery cell group (4), a lower adhesive film (6), and a glass back plate (7) stacked in sequence. A gap film (5) is provided between the battery cell group (4) and the lower adhesive film (6). The battery cell group (4) includes a plurality of arrayed battery cells (401), which are connected in series or in parallel. There is a first gap between two adjacent battery cells (401). The gap film (5) has a grid structure and covers the first gap. There is a second gap between the battery cell (401) and the frame (1), and the gap film (5) covers the second gap.

2. The high-power photovoltaic module with gap-film bonding according to claim 1, characterized in that, The glass panel (2) is ultra-white tempered glass.

3. The high-power photovoltaic module with gap-film bonding according to claim 1, characterized in that, The side of the glass panel (2) facing away from the battery cell group (4) has a textured surface, while the side of the glass panel (2) adjacent to the battery cell group (4) is a smooth surface.

4. The high-power photovoltaic module with gap-film bonding according to claim 1, characterized in that, A thermally conductive layer (8) is provided on the side of the gap film (5) facing away from the battery cell assembly (4).

5. The high-power photovoltaic module with gap-fitted film according to claim 4, characterized in that, The thermally conductive layer (8) is a thermally conductive silicone rubber layer.

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