A photovoltaic module

Abstract

The application relates to the photovoltaic power generation technical field and provides a photovoltaic module, which comprises a cell sheet plate, a front glass plate, a first frame and an edge sealing adhesive tape. The front glass plate is arranged on the light-receiving surface of the cell sheet plate, the front glass plate comprises a first surface and a second surface arranged oppositely, the first surface is a side surface of the front glass plate away from the cell sheet plate, and the front glass plate is provided with a light-shielding layer. The first frame is arranged on at least one side edge of the front glass plate, the first frame is arranged without contact with the first surface of the front glass plate and is recessed or flush relative to the first surface. The edge sealing adhesive tape is arranged around the cell sheet plate, the light-shielding layer is arranged close to the first frame and corresponds to the edge sealing adhesive tape and is used for shielding the edge sealing adhesive tape. The application realizes ultraviolet shielding of the edge sealing adhesive tape through the light-shielding layer, avoids aging of the edge sealing adhesive tape due to ultraviolet irradiation and loss of bonding performance and waterproof performance, and improves long-term sealing performance and reliability of the photovoltaic module.

Description

Technical Field

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

[0002] In the field of photovoltaic modules, edge sealing strips are usually installed on the outer edge of the solar cell panel to waterproof and seal the cell strings in the photovoltaic module, preventing moisture from entering the photovoltaic module from the edge of the frame.

[0003] However, although the edge sealing strip has good water vapor barrier ability, if it is exposed to ultraviolet light for a long time, it will be photo-aged quickly, which will significantly reduce its adhesion to the glass. This will make it easier for water vapor to penetrate into the photovoltaic module from the interface between the edge sealing strip and the glass, causing the photovoltaic module to fail to generate electricity. Summary of the Invention

[0004] In view of this, this application provides a photovoltaic module that can solve the problem of how to prevent the edge sealing strip in the photovoltaic module from failing rapidly due to ultraviolet radiation.

[0005] This application provides a photovoltaic module, including a solar cell panel, a front glass panel, a first frame, and an edge sealing strip.

[0006] The front glass panel is set on the light-facing surface of the solar cell panel. The front glass panel includes a first side and a second side arranged opposite to each other. The first side is the surface of the front glass panel away from the solar cell panel. A light-shielding layer is provided on the front glass panel.

[0007] The first frame is provided at least on one edge of the front glass panel, and the first frame is provided without contact with the first surface of the front glass panel and is recessed or flush with the first surface.

[0008] The edge sealing strip is arranged around the perimeter of the battery cell panel, and the light-shielding layer is located close to the first frame and its position corresponds to that of the edge sealing strip, in order to cover the edge sealing strip.

[0009] Compared with the prior art, this application has at least the following beneficial effects:

[0010] By setting a light-shielding layer on the front glass panel near the first frame and corresponding to the edge sealing strip, ultraviolet radiation is shielded from the edge sealing strip, effectively blocking direct sunlight from hitting the edge sealing strip and preventing the edge sealing strip from losing its adhesive and waterproof properties due to aging caused by ultraviolet radiation. This prevents moisture from entering the photovoltaic module from the edge, improves the long-term sealing performance and reliability of the photovoltaic module, and extends the service life of the photovoltaic module.

[0011] In some embodiments of this application, a light-shielding layer is disposed on the first and / or second surfaces of the front glass panel.

[0012] According to the embodiments of this application, when the light-shielding layer is disposed on the second surface of the front glass panel, external wear can be avoided; when the light-shielding layer is disposed on the first surface of the front glass panel, it is convenient to repair and maintain the light-shielding layer later; when the light-shielding layer is disposed on both sides of the front glass panel, double light shading of the edge sealing strip can be achieved. Since the front glass panel has a certain thickness, double light shading can prevent direct sunlight from hitting the edge sealing strip, and can also prevent other diffuse or refracted light from hitting the edge sealing strip. Therefore, in actual production and application, the light-shielding layer can be flexibly disposed on the first and / or second surface of the front glass panel according to different cost requirements, environmental characteristics and tolerance requirements.

[0013] In some embodiments of this application, the light-shielding layer is an opaque glass glaze layer or a frosted layer.

[0014] According to the embodiments of this application, an opaque glass enamel layer can completely block ultraviolet rays, but the process is difficult and the processing cost is higher; while a frosted layer reduces the transmittance of ultraviolet rays by scattering light. A frosted layer can be formed by frosting the corresponding positions on the front glass panel, which is both lower in cost and more aesthetically pleasing. Both the opaque glass enamel layer and the frosted layer can effectively reduce the transmittance of ultraviolet and visible light, protecting the edge sealing strip.

[0015] In some embodiments of this application, the opaque glass glaze layer is a black tempered glaze layer, a white tempered glaze layer, or a colored tempered glaze layer.

[0016] According to the embodiments of this application, by using a black tempered glaze layer, a white tempered glaze layer, or a colored tempered glaze layer as a light-shielding layer, not only can the light-shielding function be met, but the visual aesthetic requirements of building-integrated photovoltaics can also be adapted to the requirements of building-integrated photovoltaics.

[0017] In some embodiments of this application, a white tempered glaze layer is provided on the first surface of the front glass panel, and a black tempered glaze layer is provided on the second surface of the front glass panel.

[0018] According to the embodiments of this application, by setting a white tempered glaze layer on the first side to reflect sunlight, the temperature of the corresponding area where the edge sealing strip is located is reduced, thereby inhibiting the thermal aging of the edge sealing strip caused by high temperature; by setting a black tempered glaze layer on the second side to fully absorb residual transmitted light and block light from scattering on the edge sealing strip, a double protection is formed, thereby maximizing the protection of the edge sealing strip and improving the weather resistance of the edge sealing strip; and the tempered glaze layer has high strength, is durable, and can adapt to harsh outdoor environments.

[0019] In some embodiments of this application, an opaque glass glaze layer is provided on the first surface of the front glass panel, and a frosted layer is provided on the second surface of the front glass panel.

[0020] According to the embodiments of this application, by combining an opaque glass glaze layer and a frosted layer, a composite light-shielding structure is formed. Even if the opaque glass glaze layer on the first surface is partially damaged by external force, the frosted layer can still provide secondary protection to ensure that the edge sealing strip is not exposed to direct ultraviolet radiation, thereby enhancing the long-term stability of the photovoltaic module.

[0021] In some embodiments of this application, the edge sealing strip is made of butyl rubber.

[0022] According to the embodiments of this application, butyl rubber has extremely low water vapor permeability, which can effectively prevent moisture from penetrating the battery cell. Combined with the protection of the light-shielding layer, it can overcome the original defect of butyl rubber being susceptible to ultraviolet radiation, thereby achieving the best sealing performance of butyl rubber.

[0023] In some embodiments of this application, the photovoltaic module further includes a second frame. The second frame is disposed at least on one edge of the front glass panel and intersects with the first frame. A shading portion is formed on one side of the second frame, which is attached to the first surface of the front glass panel and is positioned corresponding to the edge sealing strip to shade the edge sealing strip.

[0024] According to the embodiments of this application, the shielding part of the second frame is attached to the first surface of the front glass panel to form a physical shielding barrier for the edge sealing strip at the corresponding position. In conjunction with the light-shielding layer near the first frame, it forms light-shielding protection for all edge sealing strips, ensuring that there are no blind spots for ultraviolet exposure of the edge sealing strips.

[0025] In some embodiments of this application, the battery panel includes a plurality of battery cells and an edge busbar.

[0026] Multiple solar cells are arranged in a rectangular array. Edge busbars are respectively located on both sides of the solar cell plate parallel to the first frame and are electrically connected to the solar cells. The edge busbars are located between the edge sealing strip and the solar cells.

[0027] According to the embodiments of this application, by placing the edge busbar between the sealing strip and the battery cell, the reliability of the electrical connection between the edge busbar and the battery cell is ensured, and the sealing strip is used to seal and prevent moisture from corroding the circuit.

[0028] In some embodiments of this application, there are two first borders, and the two first borders are respectively set close to the side edge busbars.

[0029] According to the embodiments of this application, two first frames are arranged on opposite sides of the photovoltaic module. When the tilt angle of the photovoltaic module is adjustable, regardless of which of the two first frames is in a lower position, it can ensure that rainwater can carry away the dust on the front glass panel, thereby preventing dust accumulation and ensuring the power generation efficiency of the photovoltaic module. Attached Figure Description

[0030] Figure 1 This is a front view of the structure of a small creepage component;

[0031] Figure 2 For small creepage components along Figure 1 A structural cross-sectional view of the BB line in the diagram;

[0032] Figure 3 This is a front view of the structure of the photovoltaic module in the embodiments of this application;

[0033] Figure 4 The photovoltaic module in the embodiments of this application is along Figure 3 A structural cross-sectional view of the BB line in the diagram;

[0034] Figure 5 This is a front view of the front glass panel in an embodiment of this application;

[0035] Figure 6 This is a partial structural cross-sectional view of the photovoltaic module in an embodiment of this application;

[0036] Figure 7 This is another partial structural cross-sectional view of the photovoltaic module in the embodiments of this application;

[0037] Figure 8 The photovoltaic module in the embodiments of this application is along Figure 3 The structural cross-sectional view of line AA in the diagram;

[0038] Figure 9 This is a schematic diagram of the installation of the photovoltaic module in the embodiments of this application.

[0039] Figure label:

[0040] 100. Small creepage circuit components; 200. Photovoltaic modules;

[0041] 1. Solar cell panel; 110. Edge busbar; 120. Solar cell;

[0042] 2. Front glass panel; 210. First side; 220. Second side; 3. Back panel; 4. First frame; 5. Edge sealing strip;

[0043] 6. Light-shielding layer; 610. Opaque glass enamel layer; 620. Frosted layer;

[0044] 7. Second border; 710. Obscuring part. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] The following is an explanation of the terms used in the embodiments of this application.

[0047] Creepage: Creepage refers to the phenomenon of a weak electric arc discharge that occurs between two conductors along the insulating material covering their surfaces.

[0048] Creepage distance: Creepage distance refers to the shortest path measured along the surface of the insulating material between two conductive parts, or between a conductive part and the insulating housing of a device.

[0049] Small creepage photovoltaic modules: Photovoltaic modules designed with shorter creepage distances than traditional solutions through technical means, while meeting electrical safety standards, in order to reduce module power loss and improve power generation efficiency.

[0050] The following is a combination of... Figure 1 and Figure 2 The technical problems to be solved by the embodiments of this application will be described.

[0051] refer to Figure 1 and Figure 2 ,in Figure 1 The structure of a small creepage assembly is shown. Figure 2 The small creepage component is shown along Figure 1 The cross-sectional structure of the BB line in the image.

[0052] like Figure 1 As shown in the background description above, taking the small creepage module 100 as an example, the distance between the edge of its cell plate 1 and the edge of the module is very small, usually controlled within 10.4mm. Moisture can easily seep into the interior of the small creepage module 100 along the edge of the module, corroding the cell plate 1. Therefore, it is necessary to use edge sealing material to waterproof and seal the edge of the cell plate 1.

[0053] Meanwhile, to prevent dust from accumulating on the surface of the small creepage component 100, the small creepage component 100 has at least one drainage edge, that is... Figure 1 The lower edge of the small creepage assembly 100 shown.

[0054] like Figure 2 As shown, the small creepage assembly 100 may also include a front glass panel 2, a back panel 3, a first frame 4, and an edge sealing strip 5.

[0055] The first frame 4 corresponding to the drainage edge is set slightly lower than or flush with the front glass plate 2 of the small creepage component 200 to ensure that water can flow out from the drainage edge, thereby carrying away the dust on the front glass plate 2 and preventing dust accumulation.

[0056] However, the sealing strip 5 corresponding to the drainage edge is directly exposed to sunlight, so the sealing strip 5 corresponding to the drainage edge will quickly age and fail, which will cause water vapor to easily invade the battery plate 1 through the edge of the small creepage component 100, causing damage to the battery plate 1 and weakening the long-term sealing performance and reliability of the small creepage component 100.

[0057] Therefore, in order to solve the above problems, this application provides a photovoltaic module that provides ultraviolet shielding for the edge sealing strip by setting a light-shielding layer on the front glass panel near the first frame and corresponding to the edge sealing strip. This effectively blocks direct sunlight from hitting the edge sealing strip, preventing the edge sealing strip from losing its bonding and waterproofing properties due to aging caused by ultraviolet radiation. This prevents moisture from entering the photovoltaic module from the edge, improves the long-term sealing performance and reliability of the photovoltaic module, and extends the service life of the photovoltaic module.

[0058] The following is in conjunction with the instruction manual appendix. Figure 3-9 The photovoltaic module corresponding to the embodiment of this application will be described in detail.

[0059] refer to Figure 3 and Figure 4 , Figure 3 The front view structure of the photovoltaic module in the embodiment of this application is shown. Figure 4 The photovoltaic module shown in the embodiment of this application is along Figure 3 The cross-sectional structure of the BB line in the image.

[0060] like Figure 3 and Figure 4 As shown in the embodiments of this application, the photovoltaic module 200 may include a solar cell panel 1, a front glass panel 2, a back panel 3, a first frame 4, and an edge sealing strip 5.

[0061] The front glass plate 2 is disposed on the light-facing surface of the battery cell plate 1. The front glass plate 2 includes a first surface 210 and a second surface 220 disposed opposite to each other. The first surface 210 is the side surface of the front glass plate 2 away from the battery cell plate 1, and correspondingly, the second surface 220 is the side surface of the front glass plate 2 close to the battery cell plate 1.

[0062] The backplate 3 is disposed on the back surface of the battery cell plate 1 to support the battery cell plate 1 and protect the back surface of the battery cell plate 1.

[0063] The solar cell panel 1 may include edge busbars 110 and a plurality of solar cells 120 arranged in a rectangular array. The edge busbars 110 are electrically connected to the solar cells 120, and the extension direction of the edge busbars 110 intersects the extension direction of the main grid lines of the solar cells 120, for connecting two solar cells 120 located at the edge of the photovoltaic module 200 in series, thereby forming a cell string containing a plurality of solar cells 120. The solar cell panel 1 may include at least one cell string.

[0064] In this embodiment, the extension direction of the first frame 4 intersects with the extension direction of the main grid line of the battery cell 120. At this time, the edge busbars 110 are respectively arranged on both sides of the battery cell plate 1 and the first frame 4, which are parallel to each other.

[0065] In some other embodiments of this application, the first frame is parallel to the main grid line of the battery cell, and the edge busbars are respectively disposed on both sides where the battery cell plate intersects with the first frame (not shown in the figure).

[0066] The edge sealing strip 5 is arranged around the perimeter of the solar cell panel 1 to bond the front glass panel 2 and the back panel 3, preventing moisture from entering the solar cell panel 1 from the edge of the photovoltaic module 200, thereby achieving a waterproof seal for the solar cell panel 1.

[0067] At this time, the edge busbar 110 is positioned between the sealing strip 5 and the battery cell 120, which not only ensures the reliability of the electrical connection between the edge busbar 110 and the battery cell 120, but also prevents water vapor from corroding the circuit and the edge busbar 110 through the sealing strip 5.

[0068] Preferably, the edge sealing strip 5 is made of butyl rubber.

[0069] It is understandable that butyl rubber has extremely low water vapor permeability, typically below 1.0 g / (m²·d), which effectively prevents moisture from penetrating the solar cell plate 1.

[0070] In this embodiment, the first frame 4 is at least disposed on one side edge of the front glass panel 2. The first frame 4 is disposed without contact with the first surface 210 of the front glass panel 2 and is recessed or flush with the first surface 210 to ensure that the first frame 4 will not block the water flow from the surface of the front glass panel 2.

[0071] Since the first frame 4 does not obstruct water flow, once the photovoltaic module 200 is installed, the edge corresponding to any of the first frame 4 needs to serve as the drainage edge of the photovoltaic module 200. To ensure that rainwater rinsing the front glass panel 2 can be drained smoothly, the drainage edge needs to be in a low position, while the opposite edge is in a relatively high position.

[0072] refer to Figure 4 and Figure 5,in Figure 5 The front view structure of the front glass panel 2 and the light-shielding layer 6 in the embodiments of this application is shown.

[0073] like Figure 4 and Figure 5 As shown in the embodiment of this application, a light-shielding layer 6 is provided on the front glass panel 2. The light-shielding layer 6 is disposed near the first frame 4 and its position corresponds to the edge sealing strip 5. It is used to block the edge sealing strip 5, that is, to block the edge sealing strip 5 that is parallel to and close to the first frame 4, so as to prevent the edge sealing strip 5 that cannot be blocked by the first frame 4 from being directly exposed to sunlight.

[0074] When the edge sealing strip 5 is made of butyl rubber, combined with the protection of the light-shielding layer 6, it can overcome the original defect of butyl rubber being susceptible to ultraviolet radiation, thereby giving full play to the best sealing performance of butyl rubber.

[0075] Therefore, compared with the prior art, the photovoltaic module 200 provided in this application embodiment, by setting a light-shielding layer 6 on the front glass panel 2 near the first frame 4 and corresponding to the position of the edge sealing strip 5, achieves ultraviolet shielding of the edge sealing strip 5, effectively blocking direct sunlight from hitting the edge sealing strip 5, preventing the edge sealing strip 5 from losing its adhesive and waterproof performance due to aging caused by ultraviolet radiation, thereby preventing water vapor from entering the interior of the photovoltaic module 200 from the edge, improving the long-term sealing performance and reliability of the photovoltaic module 200, extending the service life of the photovoltaic module 200, and solving the problem of how to prevent the edge sealing strip 5 in the photovoltaic module from failing rapidly due to ultraviolet radiation.

[0076] like Figure 4 As shown in the embodiment of this application, the light-shielding layer 6 is disposed on the first surface 210 and / or the second surface 220 of the front glass panel 2.

[0077] It is understandable that when the light-shielding layer 6 is placed on the second surface 220 of the front glass panel 2, external wear can be avoided; when the light-shielding layer 6 is placed on the first surface 210 of the front glass panel 2, it facilitates later repair and maintenance of the light-shielding layer 6. When the light-shielding layer 6 is placed on both sides of the front glass panel 2, double light shading of the edge sealing strip 5 can be achieved. Since the front glass panel 2 has a certain thickness, double light shading can prevent direct sunlight from hitting the edge sealing strip 5, and also prevent other diffuse or refracted light from hitting the edge sealing strip 5. When the light-shielding layer 6 is only placed on one side of the front glass panel 2, it has a lower cost advantage.

[0078] Therefore, in actual production and application, the light-shielding layer 6 can be flexibly set on the first side 210 and / or the second side 220 of the front glass panel 2 according to different cost requirements, environmental characteristics and tolerance requirements.

[0079] Specifically, in the embodiments of this application, the light-shielding layer 6 can be an opaque glass glaze layer 610 or a frosted layer.

[0080] It's understandable that the opaque glass enamel layer 610 can completely block ultraviolet rays, but it's more difficult to manufacture and has higher processing costs. The frosted layer, on the other hand, reduces ultraviolet transmittance by scattering light. This frosted layer can be formed by frosting the corresponding areas of the front glass panel 2, resulting in a lower cost and a more aesthetically pleasing finish. Both the opaque glass enamel layer 610 and the frosted layer effectively reduce the transmittance of ultraviolet and visible light, protecting the edge sealing strip 5. In actual production and application scenarios, the choice can be made flexibly based on cost, light transmittance requirements, or aesthetic considerations.

[0081] Preferably, the opaque glass glaze layer 610 can be a black tempered glaze layer, a white tempered glaze layer, or a colored tempered glaze layer.

[0082] Specifically, the black tempered glaze uses copper chromate black and iron chromate cobalt black as the main colorants; the white tempered glaze uses titanium oxide, zirconium oxide, tin oxide, and zircon powder as the main colorants. In the colored tempered glaze, cobalt aluminate can be used as the blue colorant, chromium oxide and chromium cobalt green as the green colorant, vanadium zirconium yellow and chromium titanium yellow as the yellow colorant, and cadmium red and cadmium-free environmentally friendly red as the red colorant. Gold or bronze tempered glazes are created using gold, silver, and copper-based metal powders and low-melting-point glass powder.

[0083] It is understandable that, in building-integrated photovoltaics (BIPV) scenarios, different colored tempered glaze layers can be selected as the shading layer 6 for aesthetic purposes. Specifically, the color of the shading layer 6 can be matched with the exterior color of the building to achieve a harmonious aesthetic. Furthermore, the tempered glaze layer has high strength, is durable, and can withstand harsh outdoor environments.

[0084] In some embodiments of this application, when both the first surface 210 and the second surface 220 of the front glass panel 2 are provided with a light-shielding layer 6, and the light-shielding layer 6 is an opaque glass glaze layer 610, the light-shielding layer 6 on the first surface 210 of the front glass panel 2 is a white tempered glaze layer, and the light-shielding layer 6 on the second surface 220 of the front glass panel 2 is a black tempered glaze layer.

[0085] It is understandable that by setting a white tempered glaze layer on the first surface 210 to reflect sunlight, the temperature of the corresponding area where the edge sealing strip 5 is located is reduced, thereby inhibiting the thermal aging of the edge sealing strip 5 caused by high temperature; and by setting a black tempered glaze layer on the second surface 220 to fully absorb residual transmitted light and block light from scattering on the edge sealing strip 5, forming double protection, thereby maximizing the protection of the edge sealing strip 5 and improving the weather resistance of the edge sealing strip 5.

[0086] In this embodiment, the opaque glass enamel layer 610 protrudes from the surface of the front glass panel 2. That is, during the production process, the opaque glass enamel layer 610 is directly applied to the surface of the complete front glass panel 2, which reduces processing difficulty, lowers costs, and increases the yield rate.

[0087] refer to Figure 6 , Figure 6 The layout of the opaque glass glaze layer 610 in an embodiment of this application is shown.

[0088] like Figure 6 As shown, in some other embodiments of this application, the opaque glass glaze layer 610 can also be embedded on the surface of the front glass panel 2, and the surface of the opaque glass glaze layer 610 is flush with the surface of the front glass panel 2.

[0089] It is understandable that during the production process, the corresponding positions of the front glass plate 2 need to be etched to form corresponding strip grooves, and then an opaque glass glaze layer 610 is formed in the strip grooves. The processing is difficult, costly, and has a low yield rate, but it is more beautiful and the opaque glass glaze layer 610 is not easy to fall off, and has a more stable and reliable light-blocking effect.

[0090] refer to Figure 7 , Figure 7 The layout of the opaque glass glaze layer 610 and the frosted layer 620 in the embodiments of this application is shown.

[0091] like Figure 7 As shown, in some embodiments of this application, when both the first surface 210 and the second surface 220 of the front glass panel 2 are provided with a light-shielding layer 6, the light-shielding layer 6 on the first surface 210 of the front glass panel 2 is an opaque glass enamel layer 610, and the light-shielding layer 6 on the second surface 220 of the front glass panel 2 is a frosted layer 620.

[0092] It is understandable that by combining the opaque glass glaze layer 610 and the frosted layer 620 to form a composite light-shielding structure, even if the opaque glass glaze layer 610 on the first surface 210 is partially damaged by external force, the frosted layer 620 can still provide secondary protection to ensure that the edge sealing strip 5 is not exposed to direct ultraviolet rays, thereby enhancing the long-term stability of the photovoltaic module 200.

[0093] refer to Figure 8 , Figure 8 The photovoltaic module 200 shown in the embodiment of this application is shown along Figure 3 The cross-sectional structure of line AA in the diagram.

[0094] like Figure 8As shown in the embodiment of this application, the photovoltaic module 200 may further include a second frame 7. The second frame 7 is at least disposed on one side edge of the front glass panel 2 and intersects with the first frame 4. A blocking portion 710 is formed on one side of the second frame 7. The blocking portion 710 is attached to the first surface 210 of the front glass panel 2 and is positioned corresponding to the edge sealing strip 5, for blocking the edge sealing strip 5, that is, blocking the edge sealing strip 5 that is close to and parallel to the second frame 7.

[0095] It is understood that by attaching the shielding part 710 of the second frame 7 to the first surface 210 of the front glass panel 2, a physical shielding barrier is formed for the edge sealing strip 5 at the corresponding position. In conjunction with the light-shielding layer 6 near the first frame 4, light-shielding protection is formed for all edge sealing strips 5, ensuring that there are no blind spots for ultraviolet exposure of the edge sealing strips 5.

[0096] refer to Figure 9 , Figure 9 The side view of the photovoltaic module 200 according to an embodiment of this application after installation is shown.

[0097] like Figure 9 As shown in the embodiment of this application, there are two first borders 4, and the two first borders 4 are respectively close to the side edge busbars (see reference). Figure 4 The edge busbar 110 shown is configured.

[0098] It is understandable that the two first frames 4 are set on opposite sides of the photovoltaic module 200. When the photovoltaic module 200 is installed on the angle-adjustable bracket, as the angle of the photovoltaic module 200 changes, regardless of which of the two first frames 4 is in a lower position, it can ensure that rainwater can carry away the dust on the front glass panel 2, thereby preventing dust accumulation and ensuring the power generation efficiency of the photovoltaic module 200.

[0099] In summary, the photovoltaic module 200 provided in this application achieves ultraviolet shielding of the edge sealing strip 5 by setting a light-shielding layer 6 on the front glass panel 2 near the first frame 4 and corresponding to the position of the edge sealing strip 5. This effectively blocks direct sunlight from hitting the edge sealing strip 5, preventing the edge sealing strip 5 from losing its adhesive and waterproof performance due to aging caused by ultraviolet radiation. This prevents moisture from entering the interior of the photovoltaic module 200 from the edge, improves the long-term sealing performance and reliability of the photovoltaic module 200, and extends the service life of the photovoltaic module 200.

[0100] The specific embodiments described above illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details have been omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0101] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0102] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0103] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0104] In the description of this application, it should be noted that the terms "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 application.

[0105] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fit" 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 communication 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.

[0106] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A photovoltaic module, characterized in that, include: Solar cell panel; A front glass panel is disposed on the light-facing surface of the solar cell panel. The front glass panel includes a first side and a second side disposed opposite to each other. The first side is the surface of the front glass panel away from the solar cell panel. A light-shielding layer is provided on the front glass panel. A first frame is provided at least on one side edge of the front glass panel. The first frame is provided without contact with the first surface of the front glass panel and is recessed or flush with the first surface. An edge sealing strip is provided around the perimeter of the battery cell plate. The light-shielding layer is located near the first frame and its position corresponds to that of the edge sealing strip, and it is used to cover the edge sealing strip.

2. The photovoltaic module according to claim 1, characterized in that, The light-shielding layer is disposed on the first and / or second surfaces of the front glass panel.

3. The photovoltaic module according to claim 2, characterized in that, The light-shielding layer is an opaque glass glaze layer or a frosted layer.

4. The photovoltaic module according to claim 3, characterized in that, The opaque glass glaze layer is a black tempered glaze layer, a white tempered glaze layer, or a colored tempered glaze layer.

5. The photovoltaic module according to claim 4, characterized in that, The white tempered glaze layer is provided on the first surface of the front glass panel, and the black tempered glaze layer is provided on the second surface of the front glass panel.

6. The photovoltaic module according to claim 4, characterized in that, The first surface of the front glass panel is provided with the opaque glass glaze layer, and the second surface of the front glass panel is provided with the frosted layer.

7. The photovoltaic module according to any one of claims 1 to 6, characterized in that, The edge sealing strip is made of butyl rubber.

8. The photovoltaic module according to claim 1, characterized in that, Also includes: The second frame is provided at least on one side edge of the front glass panel and intersects with the first frame. A blocking part is formed on one side of the second frame. The blocking part is attached to the first surface of the front glass panel and its position corresponds to the edge sealing strip, and is used to block the edge sealing strip.

9. The photovoltaic module according to claim 8, characterized in that, The solar cell panel includes: Multiple rectangular arrays of solar cells; Edge busbars are respectively disposed on both sides of the battery cell plate parallel to the first frame and electrically connected to the battery cell. The edge busbars are disposed between the edge sealing strip and the battery cell.

10. The photovoltaic module according to claim 9, characterized in that, There are two first borders, and the two first borders are respectively set close to the edge busbars on both sides.

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