Mounting structure of photovoltaic module and photovoltaic module

Abstract

The utility model relates to an installation structure of a photovoltaic module and the photovoltaic module, and the installation structure comprises an installation frame which comprises a side plate and a bottom plate fixed on the side plate, and the side plate is at least provided with a first flange extending along a first direction and a second flange extending along a second direction, the first flange and the second flange are arranged at an interval to form a first glue overflowing groove, and the second flange and the bottom plate are arranged at an interval to form a glue filling groove; and the glue joint layer is arranged on the glue filling groove and the bottom plate and used for supporting the surface of the photovoltaic laminated piece, and at least part, arranged in the glue filling groove, of the glue joint layer can overflow to the first glue overflowing groove. A first flange and a second flange arranged on the A face and the side edge are omitted, the glue filling groove and the glue overflowing groove are formed, the glue filling groove is used for storing glue so that the installation frame and the photovoltaic laminated piece can be tightly combined, the glue overflowing groove is used for receiving overflowing glue, the glue overflowing phenomenon on the light receiving face of the photovoltaic laminated piece is avoided, extra rubber strips are avoided, and materials are saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic technology, in particular to a mounting structure of a photovoltaic module and the photovoltaic module. BACKGROUND

[0002] The photovoltaic module is the most important part of a solar power generation system, which includes a photovoltaic laminate and a frame arranged around the photovoltaic laminate. The frame of the photovoltaic module is used to fix the photovoltaic laminate on other objects and is one of the important components. During the use of the photovoltaic module, the frame of the photovoltaic module connected with the periphery of the laminate has a height difference with the top surface (i.e. the light receiving surface) of the laminate, which causes dust to accumulate on the top surface of the laminate, thereby causing hot spot phenomenon during the operation of the photovoltaic module and reducing the power generation efficiency of the photovoltaic module. Although there are technical solutions to solve the above dust accumulation problem in the prior art, there are problems of overflow of adhesive to the top surface of the laminate during frame mounting and ineffective sealing of the laminate. SUMMARY

[0003] Therefore, it is necessary to provide a mounting structure of a photovoltaic module with high sealing degree and preventing overflow of adhesive and the photovoltaic module in view of the above problems.

[0004] A mounting structure of a photovoltaic module, the mounting structure comprising:

[0005] a mounting frame comprising a side plate and a bottom plate fixed to the side plate, the bottom plate being used to support a photovoltaic laminate; the side plate is provided with at least a first stop edge extending in a first direction and a second stop edge extending in a second direction, the first direction and the second direction respectively having an included angle with the extension direction of the side plate; the first stop edge and the second stop edge are spaced apart to form a first overflow groove, and the second stop edge and the bottom plate are spaced apart to form a filling groove;

[0006] an adhesive layer provided on the surface of the filling groove and the bottom plate used to support the photovoltaic laminate, at least part of the adhesive layer provided in the filling groove can overflow to the first overflow groove.

[0007] In one of the embodiments, the second stop edge extends from the first stop edge to one side of the bottom plate.

[0008] In one of the embodiments, the first direction and the second direction are different.

[0009] In one of the embodiments, the included angle between the first direction and the extension direction of the side plate is 85-95°.

[0010] And / or, the included angle between the second direction and the extension direction of the side plate is 45-95°.

[0011] In one of the embodiments, the height of the first retaining edge is higher than the height of the second retaining edge to form a glue overflow channel between the first glue overflow groove and the glue filling groove.

[0012] In one of the embodiments, the difference between the height of the first retaining edge and the height of the second retaining edge is less than or equal to 1mm.

[0013] In one of the embodiments, the side plate is provided with a third retaining edge extending in a third direction, the third retaining edge is located between the second retaining edge and the first retaining edge, and the third retaining edge divides the first glue overflow groove into an upper glue overflow part and a lower glue overflow part.

[0014] In one of the embodiments, in the vertical direction, the upper vertex of the inner wall of the glue filling groove is higher than the lower edge of the second retaining edge.

[0015] In one of the embodiments, the side plate comprises an upper section and a lower section, the upper section is located above the bottom plate, and at least a part of the upper section is arc-shaped.

[0016] In one of the embodiments, the bottom plate has a first end and a second end, the first end is connected to the side plate, and the second end is provided with a recessed second glue overflow groove.

[0017] In one of the embodiments, the diameter of the second glue overflow groove is greater than the interval length between the first retaining edge and the second retaining edge.

[0018] In one of the embodiments, at least one convex rib is provided between the first end and the second end of the bottom plate, and the adhesive layer covers the convex rib.

[0019] In one of the embodiments, at least one groove is provided between the first end and the second end of the bottom plate, and the adhesive layer fills the groove.

[0020] A photovoltaic module comprising a photovoltaic laminate and at least one mounting structure of the photovoltaic module as described above.

[0021] The aforementioned mounting structure and photovoltaic modules including the mounting structure eliminate the A-side, only providing side panels, improving installation convenience and avoiding issues such as the side walls of the frame obstructing the light-receiving surface of the photovoltaic laminate and reducing surface dust accumulation on the photovoltaic laminate. Combined with the first and second baffles on the side, a filling groove and an overflow groove are formed. The filling groove stores adhesive to tightly bond the mounting frame to the photovoltaic laminate, while the overflow groove receives overflowing adhesive, preventing overflow on the light-receiving surface of the photovoltaic laminate. This reduces manual adhesive removal during encapsulation, improving production efficiency and lowering production costs. It also avoids the need for additional rubber strips, which are prone to aging and failure over time, affecting module lifespan. This application saves on materials. The double or multiple baffle structure creates a non-smooth surface, improving the contact grip between the photovoltaic laminate and the mounting frame, and increasing the bonding strength. The double or multiple baffle structure also prevents gaps between the photovoltaic laminate and the mounting frame, preventing moisture intrusion, improving product lifespan, and ensuring a clean appearance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a photovoltaic module according to an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the structure of the mounting frame according to an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the mounting frame according to another embodiment of this application.

[0025] Figure 4 This is a partial structural diagram of the mounting frame according to another embodiment of this application.

[0026] Figure 5 This is a partial structural diagram of the mounting frame according to another embodiment of this application.

[0027] Explanation of icon numbers:

[0028] 10. Photovoltaic laminate; 20. Mounting structure; 100. Mounting frame; 101. Filling groove; 102. First overflow groove; 102a. Upper overflow section; 102b. Lower overflow section; 103. Second overflow groove; 110. Side plate; 111. First retaining edge; 112. Second retaining edge; 113. Upper section; 114. Lower section; 115. Third retaining edge; 120. Base plate; 121. Protruding rib; 122. Groove; 130. Reinforcing plate; 140. Bearing plate; 200. Adhesive layer; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0029] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and with modifications thereof, without departing from the scope of the present application, and it is understood that these specific embodiments are given for purposes of example and exemplary description only and are not presented in a way of limitation to the present application.

[0030] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.

[0031] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0032] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are for purposes of illustration only and are not meant to be limiting.

[0035] The single solar cell itself is relatively fragile and cannot independently resist external harsh conditions, so it is necessary to connect the single crystalline silicon solar cell in series and parallel, and to encapsulate and connect the external wires to form a solar cell module that can be used as a photovoltaic power source independently.

[0036] After the solar cell is connected in series and parallel, the lamination can be formed by hot pressing sealing with tempered glass, adhesive film, etc. The periphery of the laminated part needs to be equipped with a frame. The frame is one of the important auxiliary materials of the photovoltaic module, mainly used for protecting the edge of the photovoltaic glass, strengthening the sealing performance of the module, improving the mechanical strength of the module, and having an important influence on the service life of the module.

[0037] In the prior art, in order to avoid the problem of the side wall of the frame blocking the light-receiving surface of the photovoltaic module and reducing the surface area of the photovoltaic module, the side wall of the accommodating groove on the frame for accommodating the photovoltaic laminated part 10 is usually removed close to the light-receiving surface (the side of the positive electrode) of the photovoltaic laminated part 10, which is commonly known as an A-face-free frame.

[0038] However, the above-mentioned A-face-free frame, when the photovoltaic module is encapsulated, due to the absence of the blocking of the side wall of the accommodating groove, on the one hand, it is easy to cause overflow, which requires an additional manual glue cleaning process during encapsulation, affecting the production efficiency of the product and increasing the production cost; on the other hand, it is also easy to cause a gap between the photovoltaic laminated part 10 and the frame, which is easy to be invaded by water vapor, thereby affecting the service life and appearance of the product.

[0039] In order to solve the above-mentioned problems, it is necessary to provide a mounting structure 20 of a photovoltaic module and a photovoltaic module with high sealing degree and preventing overflow. Referring toFigures 1-5 , Figures 1-5 A structural diagram of a mounting structure 20 of a photovoltaic module in an embodiment of the present application is shown. The mounting structure 20 provided by the embodiment of the present application is used for mounting a photovoltaic laminate 10. The present application also provides a photovoltaic module comprising the photovoltaic laminate 10 and at least one mounting structure 20 of a photovoltaic module as described above.

[0040] The mounting structure 20 comprises a mounting frame 100 and a cementing layer 200. The mounting frame 100 comprises a side plate 110 and a bottom plate 120 fixed to the side plate 110, and the bottom plate 120 is used for supporting the photovoltaic laminate 10. The side plate 110 is provided with at least a first stop edge 111 extending along a first direction X and a second stop edge 112 extending along a second direction Y, and the first direction X and the second direction Y respectively have an included angle with the extension direction of the side plate 110. The first stop edge 111 and the second stop edge 112 are spaced apart to form a first overflow groove, and the second stop edge 112 and the bottom plate 120 are spaced apart to form a glue filling groove 101. The cementing layer 200 is arranged on the surface of the glue filling groove 101 and the bottom plate 120 for supporting the photovoltaic laminate 10, and at least part of the cementing layer 200 arranged in the glue filling groove 101 can overflow to the first overflow groove.

[0041] The mounting structure 20 and the photovoltaic module comprising the mounting structure 20 described above cancel the A surface, and only the side plate 110 is provided, which improves the convenience of installation, avoids the problem that the side wall of the frame blocks the light-receiving surface of the photovoltaic laminate 10 and reduces the surface area of the photovoltaic laminate 10, cooperates with the first stop edge 111 and the second stop edge 112 arranged on the side to form the glue filling groove 101 and the overflow groove, the glue filling groove 101 is used for storing glue to tightly combine the mounting frame 100 and the photovoltaic laminate 10, and the overflow groove is used for receiving the overflowed glue, which avoids the overflow of glue on the light-receiving surface of the photovoltaic laminate 10, reduces the manual glue cleaning process in the packaging process, improves the production efficiency of the product, reduces the production cost, avoids the additional increase of the rubber strip, the rubber strip is lost over time, the rubber is prone to aging and failure over time, thereby affecting the service life of the module, and the present application can save materials; the double-stop edge or multi-stop edge structure forms a non-smooth surface, which improves the contact grip between the photovoltaic laminate 10 and the mounting frame 100 and improves the strength of the cementing; the double-stop edge or multi-stop edge structure makes it not easy to produce gaps between the photovoltaic laminate 10 and the mounting frame 100, avoids the invasion of water vapor, improves the product life, and ensures the neatness of the appearance.

[0042] Specifically, the mounting frame 100 can be made of aluminum alloy or steel, etc., and is used for protecting the photovoltaic laminate 10. The side plate 110, the bottom plate 120, the first stop edge 111 and the second stop edge 112 of the photovoltaic module frame can be integrally formed or separately manufactured and then fixedly connected by welding or the like.

[0043] The photovoltaic laminate 10 may include a glass layer, an upper encapsulating film, a cell string, a lower encapsulating film, and a backsheet arranged sequentially. The photovoltaic laminate 10 is typically rectangular or a regular rectangle. The photovoltaic module may include one, two, three, or four mounting frames 100. When the photovoltaic module includes two mounting frames 100, the two mounting frames 100 may be arranged opposite each other on both sides of the photovoltaic laminate 10. The side of the photovoltaic laminate 10 that receives light is the light-receiving surface, and the side of the photovoltaic laminate 10 opposite to the light-receiving surface is the bottom surface.

[0044] The base plate 120 can be bonded to the bottom surface of the photovoltaic laminate 10 via the adhesive layer 200. The ends of the first flange 111 and the second flange 112 facing away from the side plate 110 can be bonded to the side wall of the photovoltaic laminate 10 via the adhesive layer 200. The direction parallel to the light-receiving surface is defined as the horizontal direction, and the light-receiving surface is defined as the horizontal plane. The surface of the base plate 120 that contacts the photovoltaic laminate 10 can be a surface extending substantially parallel to the horizontal direction, and the side plate 110 can extend substantially perpendicular to or inclined to the horizontal direction. The side plate 110 and the base plate 120 are arranged in a T-shape.

[0045] In one embodiment, such as Figure 2 , 3 As shown, the side plate 110 includes an upper section 113 and a lower section 114. The upper section 113 is located above the base plate 120, and at least a portion of the upper section 113 is arc-shaped. Specifically, the side plate 110, including the upper section 113 and the lower section 114, can be integrally formed, or they can be manufactured separately and then fixedly connected to the base plate 120 by welding or other methods. The lower section 114 of the side plate 110 is basically arranged in a vertical direction, which is defined as the direction perpendicular to the light-receiving surface of the photovoltaic laminate 10. The upper section 113 of the side plate 110 can be arranged in the same direction as the lower section 114 of the side plate 110, such as... Figure 3 As shown, the upper section 113 of the side plate 110 can also be arc-shaped. When the side plate 110 is arc-shaped, the first stop 111 is also arc-shaped, and the side plate 110 and the first stop 111 form a complete arc.

[0046] In one embodiment, the mounting frame 100 further includes a reinforcing plate 130 disposed opposite to the side plate 110 and a supporting plate 140 disposed opposite to the bottom plate 120. One end of the reinforcing plate 130 is connected to the end of the bottom plate 120 away from the side plate 110, and the other end of the reinforcing plate 130 is connected to the supporting plate 140.

[0047] Specifically, the side plate 110, the bottom plate 120, the reinforcing plate 130 and the bearing plate 140 form a frame cavity, the side plate 110 is the B face of the mounting frame 100, the bearing plate 140 is the C face of the mounting frame 100, and the reinforcing plate 130 is the D face of the mounting frame 100, thereby forming the mounting frame 100 without the A face. The surface of the bottom plate 120 away from the photovoltaic laminate 10 and the surface of the bearing plate 140 close to the bottom plate 120 are both provided with a plurality of reinforcing protrusions, and each reinforcing protrusion extends along the length direction of the side plate 110. The reinforcing plate 130 and the reinforcing protrusions enhance the structural strength of the photovoltaic module frame, and the frame cavity reduces the weight of the photovoltaic module frame.

[0048] Further, the bearing plate 140 and the bottom plate 120 are both provided with a part extending away from the side plate 110 from the reinforcing plate 130, i.e. the reinforcing plate 130 divides the bearing plate 140 and the bottom plate 120 into a part between the side plate 110 and the reinforcing plate 130 and a part outside the reinforcing plate 130.

[0049] In one embodiment, after the bottom plate 120 is adhesively connected to the bottom surface of the photovoltaic laminate 10, the highest part of the surface of the first flange 111 away from the bottom plate 120 is flush with the light-receiving surface of the photovoltaic laminate 10, i.e. the height L1 of the first flange 111 in the direction perpendicular to the horizontal direction (hereinafter referred to as the vertical direction) does not exceed the position of the light-receiving surface of the photovoltaic laminate 10.

[0050] When the bottom plate 120 is adhesively connected to the bottom surface of the photovoltaic laminate 10, the highest part of the surface of the first flange 111 away from the bottom plate 120 is flush with the light-receiving surface of the photovoltaic laminate 10, so that rainwater can directly flow down from the first flange 111, thereby achieving the removal of dust, i.e. the rainwater will not be blocked by the mounting frame 100 in the process of washing dust, thereby improving the dust removal effect of the photovoltaic module frame. Since the surface of the first flange 111 away from the bottom plate 120 is not higher than the light-receiving surface of the photovoltaic laminate 10, the light-receiving surface of the photovoltaic laminate 10 will not be blocked by the photovoltaic module frame, thereby improving the light-receiving area of the photovoltaic laminate 10 and further improving the performance of the photovoltaic laminate 10.

[0051] In one embodiment, the second flange 112 extends from the side of the first flange 111 toward the bottom plate 120. Specifically, the second flange 112 can extend from the side plate 110 or extend from the surface of the bottom plate 120. As a preferred embodiment, when the second flange 112 extends from the surface of the bottom plate 120, the glue filling groove 101 can have a larger volume to accommodate more glue.

[0052] In one embodiment, the first direction X and the second direction Y are different. That is, the extension direction of the first stop 111 and the extension direction of the second stop 112 are different, and the first direction X and the second direction Y have different included angles with the side plate 110.

[0053] Furthermore, such as Figure 4 As shown, calculated counterclockwise, the angle α between the first direction X and the side plate 110 can be greater than the angle β between the second direction Y and the side plate 110, making the first baffle 111 and the second baffle 112 V-shaped or C-shaped. A larger angle α between the first direction X and the side plate 110 ensures a smoother connection between the first baffle 111 and the photovoltaic laminate 10, while a smaller angle β between the second direction Y and the side plate 110 ensures that the first overflow groove formed between the second baffle 112 and the first baffle 111 can accommodate more overflowing adhesive.

[0054] In one embodiment, the angle α between the first direction X and the extending direction of the side plate 110 is 85-95°; and / or, the angle β between the second direction Y and the extending direction of the side plate 110 is 45-95°. Preferably, the angle α between the first direction X and the extending direction of the side plate 110 is 85°, 88°, 90°, 92°, or 95°, for example, the first direction X and the side plate 110 can be perpendicular; and / or, the angle β between the second direction Y and the extending direction of the side plate 110 is 45°, 60°, 70°, 80°, 90°, or 95°.

[0055] Furthermore, the angle α between the first direction X and the extension direction of the side plate 110 and the angle β between the second direction Y and the extension direction of the side plate 110 have a difference, which is greater than or equal to 10° or less than or equal to 45°, so that the first stop 111 and the second stop 112 are V-shaped, trapezoidal or C-shaped, and the first overflow groove is also V-shaped, trapezoidal or C-shaped, making it easier to receive and store overflow glue.

[0056] Furthermore, the angle α between the first direction X and the extension direction of the side plate 110 and the angle β between the second direction Y and the extension direction of the side plate 110 are zero, that is, the first direction X and the second direction Y are parallel and spaced apart, the first overflow groove has a rectangular cross section, and the second baffle 112 extends from the side plate 110.

[0057] In one embodiment, the maximum spacing between the first retaining edge 111 and the second retaining edge 112 is less than or equal to 2 mm. As a preferred example, the maximum spacing between the first retaining edge 111 and the second retaining edge 112 can be 1 mm, 0.8 mm, 1.2 mm, 1.5 mm, 0.5 mm, etc. This application has found that setting the width within the above-mentioned range allows the mounting frame 100 to have better support and also provides sufficient space in the first adhesive overflow groove to accommodate the overflow of adhesive.

[0058] In one embodiment, as shown in FIG. 1, the height L1 of the first side 111 is higher than the height L2 of the second side 112, so as to form an overflow channel between the first overflow groove and the filling groove 101. The "height" is defined as the length in the direction of the structure, for example, the height L1 of the first side 111 is the length of the first side 111 in the first direction X from the side plate 110. Figure 3 Specifically, the end of the first side 111 away from the side plate 110 abuts the side of the photovoltaic laminate 10, and the end of the second side 112 away from the side plate 110 is spaced apart from the side of the photovoltaic laminate 10. Since the first overflow groove and the filling groove 101 are respectively located on both sides of the second side 112, the end of the second side 112 away from the side plate 110 and the side of the photovoltaic laminate 10 are spaced apart, which forms an overflow channel connecting the first overflow groove and the filling groove 101. During the installation of the glue, the glue gun first applies the glue layer 200 to the surface of the filling groove 101 or the bottom plate 120. When the frame is assembled, the photovoltaic laminate 10 extrudes the un-solidified glue layer 200. After the un-solidified glue layer 200 is filled in the filling groove 101, it flows to the first overflow groove through the overflow channel. The glue layer 200 flowing to the first overflow groove can prevent water vapor from invading the light-receiving surface of the photovoltaic laminate 10.

[0059] The end of the first side 111 away from the side plate 110 prevents the photovoltaic laminate 10 from being in contact with the second side 112, thereby avoiding the second side 112 from extruding and breaking the glass layer in the photovoltaic laminate 10. In combination with the glue layer 200, it prevents the direct contact between the glass and the convex, which can cause the panel to burst. The end of the first side 111 away from the side plate 110 can be a flat surface. When the end abuts the side of the photovoltaic laminate 10, compared with the line contact and the point contact, the surface contact between the end and the side can avoid the stress concentration of the glass layer caused by the end of the first side 111 away from the side plate 110, thereby avoiding the breakage of the glass layer.

[0060] In one embodiment, the difference between the height L1 of the first side 111 and the height L2 of the second side 112 is less than or equal to 1 mm. Since the first side 111 abuts the side of the photovoltaic laminate 10, when the difference between the height L1 of the first side 111 and the height L2 of the second side 112 is less than or equal to 1 mm, that is, the width of the overflow channel is less than or equal to 1 mm.

[0061]

[0062] ​Specifically, the difference between the height L1 of the first retaining edge 111 and the height L2 of the second retaining edge 112 is less than or equal to 0.5 mm. As a preferred example, the height L1 of the first retaining edge 111 can be 1 mm, 1.1 mm, 1.2 mm, 1.5 mm, or 2 mm, and the height L2 of the second retaining edge 112 can be 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.5 mm, or 1.5 mm. This application finds that setting the height within the above-mentioned range provides better support and smoother adhesive overflow channels, while also preventing adhesive overflow onto the top surface of the laminate.

[0063] In one embodiment, such as Figure 4 As shown, the side plate 110 is provided with a third baffle 115 extending along the third direction Z. The third baffle 115 is located between the second baffle 112 and the first baffle 111 at intervals. The third baffle 115 divides the first overflow groove into an upper overflow portion 102a and a lower overflow portion 102b.

[0064] Furthermore, similar to the second retaining edge 112, the third retaining edge 115 can extend from the side plate 110, or it can extend from the first retaining edge 111 or the second retaining edge 112 toward the bottom plate 120. The third direction Z is different from the second direction Y and the first direction X, and the third direction Z is either parallel to at least one of the second direction Y and the first direction X. The angle γ between the third direction Z and the extension direction of the side plate 110 is 45-95°. For example, the angle γ between the third direction Z and the extension direction of the side plate 110 is 45°, 60°, 70°, 80°, 90°, or 95°.

[0065] The maximum spacing between the third retaining edge 115 and the second retaining edge 112 is less than or equal to 2 mm. As a preferred example, the maximum spacing between the third retaining edge 115 and the second retaining edge 112 can be 1 mm, 0.8 mm, 1.2 mm, 1.5 mm, 0.5 mm, etc. This application has found that setting the width within the above-mentioned range allows the mounting frame 100 with three retaining edges to have better support and bonding strength, and also ensures that both the upper and lower adhesive overflow portions 102b have sufficient space to accommodate the overflow of adhesive. The maximum width of the third stop 115 and the second stop 112 is less than or equal to the maximum width of the third stop 115 and the second stop 112, so that the volume of the space from the lower overflow glue part 102b to the upper overflow glue part 102a gradually decreases in the direction from the bottom plate 120 to the first stop 111 (the extension direction of the side plate 110). This forms a double overflow glue protection, with the lower overflow glue part 102b serving as the main space to bear the overflow glue, and the upper overflow glue part 102a serving as the second layer of protection for the lower overflow glue part 102b, which also reduces the space occupied by the stop.

[0066] The height of the third retaining edge 115 is less than or equal to the height LI of the first retaining edge 111 by 0.5 mm. As a preferred example, the height of the third retaining edge 115 can be 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.5 mm, 1.5 mm. Further, the height of the third retaining edge 115 can be equal to the height L2 of the second retaining edge 112; or, the height of the third retaining edge 115 can also be less than the height L2 of the second retaining edge 112, so that the overflow of glue is easier to fill the lower overflow portion 102b.

[0067] In one embodiment, the upper vertex of the inner wall of the glue filling groove 101 is higher than the lower edge of the second retaining edge 112 in the vertical direction. Specifically, the upper surface of the glue filling groove 101 is arched, and when the second retaining edge 112 extends from the side surface of the first retaining edge 111, the lower surface of the second retaining edge 112 and the lower surface of the first retaining edge 111 naturally form the arched surface of the arched glue filling groove 101. When the upper vertex of the inner wall of the glue filling groove 101 is higher than the lower edge of the second retaining edge 112, the glue filling groove 101 can accommodate more glue.

[0068] In one embodiment, the bottom plate 120 has a first end and a second end, the first end is connected to the side plate 110, and the second end is provided with a recessed second overflow groove 103.

[0069] Specifically, the opening of the second overflow groove 103 of the bottom plate 120 faces the bottom surface of the photovoltaic laminated glass 10. The second overflow groove 103 is used to store the glue layer 200 for bonding the photovoltaic module frame to the photovoltaic laminated glass 10. The second overflow groove 103 has the function of storing glue, and the amount of glue stored in the second overflow groove 103 ensures the amount of glue for bonding the photovoltaic module frame to the photovoltaic laminated glass 10, thereby improving the bonding strength between the photovoltaic module frame and the photovoltaic laminated glass 10. During the glue injection installation, the glue gun first applies the glue layer 200 to the surface of the glue filling groove 101 or the bottom plate 120, and when the frame is assembled, the photovoltaic laminated glass 10 extrudes the un-solidified glue layer 200, and the un-solidified glue layer 200 flows to the second overflow groove 103. The glue layer 200 flowing to the second overflow groove 103 can block the intrusion of water vapor from the light-receiving surface of the photovoltaic laminated glass 10.

[0070] Optionally, the cross section of the second overflow groove 103 is rectangular or arc-shaped. Specifically, when the cross section of the second overflow groove 103 is rectangular, the second overflow groove 103 is a rectangular groove 122, and when the cross section of the second overflow groove 103 is arc-shaped, the second overflow groove 103 is an arc-shaped groove 122. The second overflow groove 103 has a simple structure and is easy to process, and the opening of the rectangular groove 122 or the arc-shaped groove 122 facilitates the injection of glue.

[0071] In one embodiment, the second overflow groove 103 has a depth of 4.5-6mm in the vertical direction from the bottom plate 120 to the first stop edge 111. In the horizontal direction, the second overflow groove 103 has a diameter of 8.5-9.5mm. For example, the depth of the second overflow groove 103 can be 4.5mm, 5mm, 5.2mm, 5.5mm, 5.8mm or 6mm, etc. The diameter of the second overflow groove 103 can be 8.5mm, 8.8mm, 9mm, 9.2mm, 9.3mm or 9.5mm, etc.

[0072] In one embodiment, the diameter of the second overflow groove 103 is greater than the interval between the first stop edge 111 and the second stop edge 112. Specifically, the volume of the second overflow groove 103 is greater than the volume of the first overflow groove. The larger volume of the overflow groove, together with the filled glue in the second overflow groove 103, serves to support the photovoltaic laminate 10 on the bottom plate 120.

[0073] In one embodiment, as shown in FIG. 1, the bottom plate 120 has at least one protruding rib 121 between the first end and the second end, and the glue layer 200 covers the protruding rib 121; and / or, the bottom plate 120 has at least one groove 122 between the first end and the second end, and the glue layer 200 fills the groove 122. Figure 5

[0074] Specifically, the protruding rib 121 is a structure protruding outward from the surface of the bottom plate 120 facing the photovoltaic laminate 10, and the groove 122 is a structure excavated from the surface of the bottom plate 120 facing the photovoltaic laminate 10. It can be understood that at least two adjacent protruding ribs 121 can also form a groove 122, and at least two adjacent grooves 122 can also form a protruding rib 121. The plurality of protruding ribs 121 and grooves 122 are arranged alternately to form a wavy bonding surface on the surface of the bottom plate 120 facing the photovoltaic laminate 10. The wavy bonding surface increases the contact area between the mounting frame 100 and the glue layer 200, thereby improving the reliability of the connection between the photovoltaic laminate 10 and the mounting frame 100.

[0075] In one embodiment, the glue layer 200 can be continuously or discontinuously arranged between the photovoltaic laminate 10 and the mounting frame 100. Specifically, when the bottom plate 120 is provided with the protruding rib 121, the protruding rib 121 can directly abut the photovoltaic laminate 10, so that the glue layer 200 is discontinuously arranged. The protruding rib 121 can not abut the photovoltaic laminate 10, and the glue layer 200 covers the protruding rib 121, forming a continuous glue layer 200 from the first overflow groove to the second overflow groove 103.

[0076] In one embodiment, the material of the glue layer 200 is thermosetting material or thermoplastic material. ​

[0077] Further, the thermosetting material includes at least one of silica gel, epoxy resin, acrylic resin and epoxy acrylate. Thermosetting material, also known as thermosetting plastic, is a kind of plastic which can be cured and not soluble, not melted after heating, such as silica gel. This kind of material can only be shaped once, can soften and flow when heated to a certain temperature, and will harden and have viscosity after chemical reaction-crosslinking curing.

[0078] Further, when the adhesive layer 200 is silica gel, commercial mass production silica gel can be used, or high adhesion low water permeable silica gel can be used.

[0079] Further, the thermoplastic material can include at least one of POE, PEP and EVA. POE refers to polyolefin elastomer; PEP refers to polyether propylene; EVA is ethylene-vinyl acetate copolymer. Thermoplastic material can soften and flow when heated, and can be re-solidified into solid material after cooling.

[0080] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0081] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A mounting structure of a photovoltaic module, characterized by, The mounting structure comprises: a mounting frame comprising a side plate and a bottom plate fixed to the side plate, the bottom plate being used to support the photovoltaic laminate; the side plate is provided with at least a first retaining edge extending in a first direction and a second retaining edge extending in a second direction, the first direction and the second direction respectively form an angle with the extending direction of the side plate; the first retaining edge and the second retaining edge are spaced apart to form a first overflow groove, and the second retaining edge and the bottom plate are spaced apart to form a filling groove; a glue joint layer provided on the surface of the filling groove and the bottom plate used to support the photovoltaic laminate, at least part of the glue joint layer provided in the filling groove can overflow to the first overflow groove.

2. The mounting structure for a photovoltaic module according to claim 1, wherein The second retaining edge extends from the first retaining edge towards one side of the bottom plate.

3. The mounting structure for a photovoltaic module according to claim 1, wherein The first direction and the second direction are different.

4. The mounting structure for a photovoltaic module according to any one of claims 1 to 3, characterized by, The angle between the first direction and the extending direction of the side plate is 85-95°; And / or, the angle between the second direction and the extending direction of the side plate is 45-95°.

5. The mounting structure for a photovoltaic module according to claim 1, wherein The height of the first retaining edge is higher than the height of the second retaining edge, so as to form an overflow channel between the first overflow groove and the filling groove.

6. The mounting structure for a photovoltaic module according to claim 5, wherein The difference between the height of the first retaining edge and the height of the second retaining edge is less than or equal to 1mm.

7. The mounting structure for a photovoltaic module according to claim 1, wherein The side plate is provided with a third retaining edge extending in a third direction, the third retaining edge is spaced apart between the second retaining edge and the first retaining edge, and the third retaining edge divides the first overflow groove into an upper overflow part and a lower overflow part.

8. The mounting structure for a photovoltaic module according to claim 1, wherein In the vertical direction, the upper vertex of the inner wall of the filling groove is higher than the lower edge of the second retaining edge.

9. The mounting structure of a photovoltaic module according to claim 1, wherein The side plate comprises an upper section and a lower section, the upper section is located above the bottom plate, and at least part of the upper section is arc-shaped.

10. The mounting structure for a photovoltaic module according to claim 1, wherein The bottom plate has a first end and a second end, the first end is connected to the side plate, and the second end is provided with a recessed second overflow groove.

11. The mounting structure for a photovoltaic module according to claim 10, wherein The diameter of the second overflow groove is greater than the spacing length between the first retaining edge and the second retaining edge.

12. The mounting structure for a photovoltaic module according to claim 10, wherein At least one convex rib is provided between the first end and the second end of the bottom plate, and the glue joint layer covers the convex rib; And / or, at least one groove is provided between the first end and the second end of the bottom plate, and the glue joint layer fills the groove.

13. A photovoltaic module, characterized by The mounting structure comprises a photovoltaic laminate and at least one photovoltaic module according to any one of claims 1 to 9.

Images