Photovoltaic module

Abstract

The utility model discloses a photovoltaic module, and relates to the field of photovoltaic technology. The photovoltaic module provided by the embodiment of the utility model comprises a frame, a laminated part and a bonding structure, the bonding structure wraps the edge of the laminated part, the laminated part is connected to the frame through the bonding structure, and the frame does not cover the light receiving surface of the laminated part; the water blocking cover is provided with a first end and a second end, the first end is connected with the light receiving face of the laminated piece, the second end is connected with the frame, the inner side face of the water blocking cover is attached to the bonding structure, the outer side face of the water blocking cover is connected with the light receiving face, and the included angle of the connecting position is an acute angle. The water blocking cover can improve the waterproof effect, and the included angle between the outer side surface and the light receiving surface is an acute angle, so that water easily and smoothly flows to the water blocking cover from the light receiving surface of the laminated piece, and then is discharged from the edge of the photovoltaic module. Therefore, the photovoltaic module provided by the embodiment of the utility model has relatively good waterproof performance and dust deposition prevention performance at the same time.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and more particularly, to a photovoltaic module. Background Art

[0002] Traditional photovoltaic modules face the problem of dust accumulation. This is because the frame wraps the edge of the laminate, and locally contacts the front (light-receiving surface) of the laminate. The part of the frame covering the front of the laminate has a certain thickness, and a groove is formed between the front of the laminate and the frame. In a dry weather state, dust in the air settles on the surface of the photovoltaic module, forming a uniform layer of dust accumulation. When this uniform dust accumulation encounters rainfall and large dew, it will flow along the surface of the laminate towards the lower part driven by the water flow and raindrops. Since the frame is higher than the light-receiving surface of the laminate, the frame will block a part of the ash-water mixture, forming a "barrier lake" phenomenon, that is, the ash-water mixture will stay in the groove formed between the front of the laminate and the frame. When the rain stops, the water will evaporate, leaving a large amount of dust to form a dust accumulation band, seriously blocking local solar cells, resulting in the conduction of the bypass diode inside the module. At this time, the photovoltaic cell changes from a power source to a resistor, consuming the electrical energy of other solar cells, generating a hot spot effect, and at the same time greatly reducing the power generation efficiency of the module. The dust accumulation band of the vertically installed photovoltaic module may even account for more than 70% of the total dust blockage, causing damage to the module, increasing the fire hazard, and posing a great threat to the power generation efficiency. The photovoltaic modules in the related art mainly focus on the design of the frame. For example, the part of the frame covering the front of the laminate is removed. Although it can solve the dust accumulation problem to a certain extent, the reliability of the edge waterproofing of the photovoltaic module becomes worse. Summary of the Utility Model

[0003] The purpose of this application is to provide a photovoltaic module that can balance dust accumulation prevention and edge waterproof performance.

[0004] The embodiments of this application are implemented as follows:

[0005] This application provides a photovoltaic module, including a frame, a laminate, an adhesive structure, and a water-blocking cover. The adhesive structure wraps the edge of the laminate, and the laminate is connected to the frame through the adhesive structure. The frame has no coverage on the light-receiving surface of the laminate. The water-blocking cover has opposite first and second ends. The first end is connected to the light-receiving surface of the laminate, and the second end is connected to the frame. The inner side surface of the water-blocking cover fits with the adhesive structure, and the outer side surface of the water-blocking cover is connected to the light-receiving surface, and the included angle between the two at the connection is an acute angle.

[0006] In an alternative embodiment, the material of the water-blocking cover is rubber, resin, or fiber composite material.

[0007] In an alternative embodiment, the intersection line of the light-receiving surface and the outer side surface of the water-blocking cover is parallel to the edge of the laminate wrapped by the bonding structure.

[0008] In an alternative embodiment, the outer side surface of the water-blocking cover is a flat surface; or, the outer side surface of the water-blocking cover is a convex arc surface.

[0009] In an alternative embodiment, the included angle between the outer side surface of the water-blocking cover and the light-receiving surface is 10° to 40°.

[0010] In an alternative embodiment, the first end of the water-blocking cover has an end surface connected to the inner side surface and the outer side surface, and the end surface is attached to the light-receiving surface of the laminate.

[0011] In an alternative embodiment, a support member is provided on the water-blocking cover. One end of the support member is connected to the water-blocking cover, and the other end of the support member extends along the thickness direction of the laminate and abuts against the frame. The support member is embedded between the frame and the bonding structure.

[0012] In an alternative embodiment, the support member is connected to the second end of the water-blocking cover or to the inner side surface between the first end and the second end, and one side surface of the support member is attached to the frame.

[0013] In an alternative embodiment, the laminate has a backlight surface opposite to the light-receiving surface and a side surface connecting the backlight surface and the light-receiving surface. The bonding structure includes a front filling portion, a side filling portion, and a back filling portion. The front filling portion is filled between the light-receiving surface of the laminate and the water-blocking cover, the back filling portion is provided between the backlight surface of the laminate and the frame, and the side filling portion is provided between the side surface of the laminate and the frame. The bonding structure is an integral structure.

[0014] In an alternative embodiment, the photovoltaic module further includes a water-blocking layer provided between the laminate and the bonding structure. The water-blocking layer is attached to at least one of the light-receiving surface, the side surface, and the backlight surface of the laminate.

[0015] In an alternative embodiment, the water-blocking layer is at least one of a water-blocking tape, butyl rubber, and a water-blocking coating.

[0016] The beneficial effects of the embodiments of the present application are:

[0017] The photovoltaic module provided by the embodiment of the present application includes a frame, a laminate, and an adhesive structure. The adhesive structure wraps the edge of the laminate, and the laminate is connected to the frame through the adhesive structure. The frame has no coverage on the light-receiving surface of the laminate; the water-blocking cover has a first end and a second end. The first end is connected to the light-receiving surface of the laminate, and the second end is connected to the frame. The inner side surface of the water-blocking cover fits with the adhesive structure, and the outer side surface of the water-blocking cover is connected to the light-receiving surface, and the included angle between the two at the connection is an acute angle. In the embodiment of the present application, since the frame has no coverage on the light-receiving surface of the laminate, the frame will not block the water (usually sewage containing dust) on the light-receiving surface of the laminate from draining to the surroundings. And the adhesive structure wraps the edge of the laminate, so that the side surface of the laminate is completely wrapped in the adhesive structure, and water vapor is not easy to penetrate into the inside of the laminate from the side surface of the laminate, thereby improving the waterproof performance of the photovoltaic module. And the outer side surface of the water-blocking cover is connected to the light-receiving surface, that is, it can cover the edge of the adhesive structure, so it can prevent water vapor from entering between the adhesive structure and the light-receiving surface, thereby improving the waterproof effect. The included angle between the outer side surface of the water-blocking cover and the light-receiving surface is an acute angle. Therefore, when the water on the surface of the laminate flows to the edge, the water-blocking cover has little blocking effect on the water, and the water will smoothly flow from the light-receiving surface of the laminate to the water-blocking cover, and then drain from the edge of the photovoltaic module. Therefore, the photovoltaic module provided by the embodiment of the present application takes into account both better waterproof performance and dust-proof performance at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a partial schematic diagram of a photovoltaic module in an embodiment of the present application;

[0020] Figure 2 is Figure 1 an enlarged view of partial II in;

[0021] Figure 3 It is a partial schematic diagram of a photovoltaic module in another embodiment of the present application;

[0022] Figure 4 It is a schematic diagram of a water-blocking cover and a support member in another embodiment of the present application;

[0023] Figure 5 It is a partial schematic diagram of a photovoltaic module in another embodiment of the present application;

[0024] Figure 6 It is a partial schematic diagram of a photovoltaic module in another embodiment of the present application;

[0025] Figure 7 Schematic diagram of the water-blocking cover and the support member in another embodiment of the present application;

[0026] Figure 8 Partial schematic diagram of a photovoltaic module provided with a water-blocking layer in an embodiment of the present application;

[0027] Figure 9 Partial schematic diagram of a photovoltaic module provided with a water-blocking layer in another embodiment of the present application.

[0028] Reference numerals: 100 - frame; 101 - first wall surface; 102 - second wall surface; 200 - laminate; 201 - light-receiving surface; 202 - backlight surface; 203 - side surface; 300 - bonding structure; 310 - front filling part; 320 - back filling part; 330 - side filling part; 400 - water-blocking cover; 401 - end face; 402 - mating groove; 403 - first end; 404 - second end; 405 - inner side surface; 406 - outer side surface; 410 - support member; 500 - water-blocking layer. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0031] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0033] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In the photovoltaic module in the traditional technology, in order to ensure the installation stability of the laminate, the edge of the laminate is usually embedded in the groove of the frame. Therefore, the part of the front surface (i.e., the light-receiving surface) of the laminate near the edge will be partially covered by the frame. This part of the frame forms a step with the front surface of the laminate, which will block the water on the front surface of the laminate from flowing outside the edge, that is, it affects drainage. When the laminate is inclined, at the lower side edge, a groove will be formed between the light-receiving surface of the laminate and the frame, accumulating sewage, and a large amount of dust will be left after the sewage dries up. In order to achieve the effect of preventing dust accumulation in the related photovoltaic module, the part of the frame located on the front surface of the laminate is usually omitted. Although the frame no longer affects the drainage of sewage outside the edge, the position where the side surface (the surface connecting the light-receiving surface and the backlight surface) of the laminate intersects with the bonding structure is exposed, which easily leads to water seepage at the edge of the laminate.

[0036] In order to improve the deficiencies in the above-related technologies, the embodiment of the present application provides a photovoltaic module, which uses a bonding structure to wrap the edge of the laminate, and a water-blocking cover 400 is arranged on the bonding structure located on the light-receiving surface of the laminate, so as to balance the drainage, dust-proof performance, and waterproof performance of the photovoltaic module.

[0037] Figure 1 This is a partial schematic diagram of a photovoltaic module in an embodiment of the present application; Figure 2 It is Figure 1 an enlarged view of partial II in Figure 1 and Figure 2 As shown in and ,the photovoltaic module provided by the embodiment of the present application includes a frame 100, a laminate 200, an adhesive structure 300, and a water-blocking cover 400. The adhesive structure 300 wraps the edge of the laminate 200, and the laminate 200 is connected to the frame 100 through the adhesive structure 300. The frame 100 has no coverage on the light-receiving surface 201 of the laminate 200. The water-blocking cover 400 has a first end 403 and a second end 404. The first end 403 is connected to the light-receiving surface 201 of the laminate 200, and the second end 404 is connected to the frame 100. The inner side surface 405 of the water-blocking cover 400 is attached to the adhesive structure 300, and the outer side surface 406 of the water-blocking cover 400 is connected to the light-receiving surface 201, and the included angle between the two at the connection is an acute angle.

[0038] In this embodiment, the adhesive structure 300 includes a front filling portion 310 attached to the light-receiving surface 201 of the laminate 200. The front filling portion 310 extends along the edge of the laminate 200. The water-blocking cover 400 is specifically attached to the front filling portion 310. The interval direction between the first end 403 and the second end 404 of the water-blocking cover 400 is perpendicular to the extension direction of the edge of the laminate 200. Therefore, in this embodiment, the front filling portion 310 is disposed between the water-blocking cover 400 and the light-receiving surface. The laminate 200 further has a backlight surface 202 opposite to the light-receiving surface 201 and a side surface 203 connecting the backlight surface 202 and the light-receiving surface 201. The adhesive structure 300 further includes a side filling portion 330 and a back filling portion 320. Among them, the back filling portion 320 is disposed between the backlight surface 202 of the laminate 200 and the frame 100, and the side filling portion 330 is disposed between the side surface 203 of the laminate 200 and the frame 100. The adhesive structure 300 is an integral structure. Specifically, the frame 100 includes a first wall surface 101 and a second wall surface 102. The first wall surface 101 is spaced opposite to the backlight surface 202 of the laminate 200, and the second wall surface 102 is spaced opposite to the side surface 203 of the laminate 200. The back filling portion 320 is disposed between the first wall surface 101 and the backlight surface 202 of the laminate 200 to realize the connection and fixation of the laminate 200 and the first wall surface 101; the side filling portion 330 is disposed between the second wall surface 102 and the side surface 203 of the laminate 200 to realize the fixed connection of the laminate 200 and the second wall surface 102. Since a slope that gradually rises relative to the light-receiving surface 201 is formed on the outside of the front filling portion 310, in this embodiment, the height of the second wall surface 102 exceeds the light-receiving surface 201 of the laminate 200, and the end of the second wall surface 102 far from the first wall surface 101 is approximately flush with the high point of the front filling portion 310.

[0039] In the embodiment of the present application, the fact that the frame 100 has no coverage on the light-receiving surface 201 of the laminate 200 means that there is no frame 100 blocking in the area directly facing the light-receiving surface 201 of the laminate 200, or rather, there is no projection of the frame 100 on the light-receiving surface 201. Since the frame 100 no longer covers a part of the light-receiving surface 201, the frame 100 will not form a step on the surface of the light-receiving surface 201 to block the water on the light-receiving surface 201 from draining outwards beyond the edge. The bonding structure 300 mainly plays the role of fixedly connecting the frame 100 and the laminate 200 and ensuring the stability of the laminate 200. By wrapping the edge of the laminate 200 with the bonding structure 300, the joint between the bonding structure 300 and the laminate 200 will not be exposed, thereby improving the waterproof effect. The water-blocking cover 400 attached to the outside of the front filling part 310 is connected to the light-receiving surface 201, so it can cover the edge of the front filling part 310 and reduce the risk of water vapor seeping into the space between the front filling part 310 and the light-receiving surface 201. Moreover, the outer side surface 406 of the water-blocking cover 400 forms an acute angle with the light-receiving surface 201, which can reduce the blocking effect of the water-blocking cover 400 on water: when the water on the light-receiving surface 201 of the laminate 200 flows towards the edge, it can smoothly flow from the light-receiving surface 201 to the outer side surface 406 of the water-blocking cover 400, and then cross the front filling part 310 and the water-blocking cover 400 and drain out from the edge of the photovoltaic module. Since the outer side surface 406 of the water-blocking cover 400 is connected to the light-receiving surface 201 and forms an acute angle, water is not likely to accumulate between the outer side surface 406 and the laminate 200. In this embodiment, the intersection line of the outer side surface 406 of the water-blocking cover 400 and the light-receiving surface 201 is parallel to the edge of the laminate 200 wrapped by the bonding structure 300, so that the covering width of the water-blocking cover 400 at the edge of the light-receiving surface 201 remains consistent, improving the aesthetics.

[0040] Optionally, the included angle between the outer side surface 406 of the water-blocking cover 400 and the light-receiving surface 201 at the connection is 10° to 40°, such as 10°, 15°, 20°, 25°, 30°, 35° or 40°. It should be understood that the included angle between the outer side surface 406 of the water-blocking cover 400 and the light-receiving surface 201 specifically refers to the included angle between the outer side surface 406 of the water-blocking cover 400 and the area of the light-receiving surface 201 covered by the bonding structure 300, as shown by angle A in Figure 2 as shown.

[0041] In Figure 1 the embodiment, the outside of the front filling part 310 is a plane, so that the front filling part 310 is in a wedge shape. Correspondingly, the water-blocking cover 400 is a flat sheet-like structure, that is, the outer side surface 406 of the water-blocking cover 400 is a plane.

[0042] As Figure 2As shown, in this embodiment, the first end 403 of the water-blocking cover 400 has an end face 401 connected to the inner side face 405 and the outer side face 406, and the end face 401 is attached to the light-receiving face 201 of the laminate 200. By attaching the end face 401 of the water-blocking cover 400 to the light-receiving face 201 of the laminate 200, it is possible to avoid the formation of a gap between the laminate 200 and the water-blocking cover 400, which may accumulate dust and water; at the same time, it can also further improve the waterproof performance and prevent water vapor from penetrating between the front filling portion 310 and the laminate 200 and then entering the laminate 200 from the side face 203 of the laminate 200. Moreover, the attachment of the end face 401 to the light-receiving face 201 can prevent water vapor from entering between the water-blocking cover 400 and the front filling portion 310, ensuring the bonding reliability between the two.

[0043] Figure 3 It is a partial schematic diagram of a photovoltaic module in another embodiment of the present application; Figure 4 It is a schematic diagram of the water-blocking cover 400 and the support member 410 in another embodiment of the present application. As Figure 3 and Figure 4 shown, in this embodiment, a support member 410 is provided on the water-blocking cover 400. One end of the support member 410 is connected to the water-blocking cover 400, and the other end of the support member 410 extends along the thickness direction of the laminate 200 and abuts against the frame 100. The support member 410 is embedded between the frame 100 and the bonding structure 300. By providing the support member 410, the support member 410 is tightly connected to the frame 100 and the bonding structure 300, which can increase the stability of the water-blocking cover 400. In addition, when filling the bonding structure 300, the support member 410 can be used as a support to pre-position the water-blocking cover 400.

[0044] Optionally, the support member 410 is connected to the second end 404 of the water-blocking cover 400 or to the inner side face 405 between the first end 403 and the second end 404, and one side face of the support member 410 is attached to the frame 100. In this embodiment, the support member 410 is connected to the second end 404 of the water-blocking cover 400. The support member 410 has a flat sheet-like structure and is attached to the second wall surface 102 of the frame 100, and the end thereof away from the water-blocking cover 400 abuts against the first wall surface 101. In other words, the support member 410 is embedded between the side filling portion 330 and the second wall surface 102 of the frame 100.

[0045] Figure 5 It is a partial schematic diagram of a photovoltaic module in another embodiment of the present application. As Figure 5 shown, in some embodiments, the outer side face 406 of the water-blocking cover 400 is a convex arc surface. In this case, the angle between the outer side face 406 of the water-blocking cover 400 and the light-receiving face 201 is the angle between the tangent plane of the outer side face 406 at the connection with the light-receiving face 201 and the area of the light-receiving face 201 covered by the front filling portion 310, and this angle is an acute angle. InFigure 5 In the embodiment, the water-blocking cover 400 is also not likely to block drainage, and can avoid water accumulation at the junction of the outer side surface 406 of the water-blocking cover 400 and the light-receiving surface 201 of the laminate 200.

[0046] Figure 6 It is a partial schematic view of a photovoltaic module in another embodiment of the present application; Figure 7 It is a schematic structural view of the water-blocking cover 400 and the support member 410 in another embodiment of the present application. As Figure 6 and Figure 7 shown, a support member 410 is connected to the inner side surface 405 between the first end 403 and the second end 404 of the arc-shaped water-blocking cover 400. One end of the support member 410 away from the water-blocking cover 400 abuts against the first wall surface 101 of the frame 100, and one side surface of the support member 410 is attached to the second wall surface 102.

[0047] In this embodiment, one or more mating grooves 402 are provided inside the second end 404 of the water-blocking cover 400. The mating grooves 402 are used to cooperate with the ridges on the frame 100, thereby improving the stability of the water-blocking cover 400.

[0048] In various embodiments of the present application, the water-blocking cover 400 can be made of resin and / or fiber composite materials. It can be understood that by providing the water-blocking cover 400, the functions of preventing dust accumulation and draining water can be better achieved. The water-blocking cover 400 can be connected to the outside of the front filling portion 310 by bonding, so as to ensure that it is not easy to fall off. The shape and size of the water-blocking cover 400 should be adapted to the outer surface of the front filling portion 310. For example, in the foregoing embodiment, the water-blocking cover 400 is a flat sheet or an arc-shaped sheet.

[0049] Figure 8 It is a partial schematic view of a photovoltaic module provided with a water-blocking layer 500 in an embodiment of the present application; Figure 9 It is a partial schematic view of a photovoltaic module provided with a water-blocking layer 500 in another embodiment of the present application. As Figure 8 and Figure 9 shown, in an alternative embodiment, the photovoltaic module further includes a water-blocking layer 500 disposed between the laminate 200 and the bonding structure 300. The water-blocking layer 500 is attached to at least one of the light-receiving surface 201, the side surface 203, and the backlight surface 202 of the laminate 200. By providing the water-blocking layer 500, the waterproof effect of the photovoltaic module can be further improved.

[0050] Optionally, the water-blocking layer 500 is a water-blocking tape, butyl rubber, or a water-blocking coating. Optionally, the water permeability of the water-blocking layer 500 < 0.1 g / (m 2 ·day).

[0051] In Figure 8In the illustrated embodiment, the water-blocking layer 500 is attached to a part of the backlight surface 202 and the side surface 203 of the laminate 200. Specifically, Figure 8 In the embodiment, the water-blocking layer 500 uses a water-blocking tape. The water-blocking tape may include an aluminum foil, PET, an adhesive (acrylic system, rubber system), and a release film (PET). Optionally, the thickness of the water-blocking tape is <80 μm, the width is 6 - 14 cm, and the contact width between the side surface 203 of the laminate 200 and the water-blocking tape is not less than 3 mm.

[0052] In Figure 9 In the illustrated embodiment, the water-blocking layer 500 completely covers the side surface 203 of the laminate 200, which can preferably prevent water vapor from entering the interior of the laminate 200 from the side surface 203. In Figure 9 In the embodiment, the water-blocking layer 500 is butyl rubber or a water-blocking coating. The materials of butyl rubber and the water-blocking coating are less, which can reduce the cost.

[0053] In each of the above embodiments, the material of the bonding structure 300 can be selected as a sealant, and the water permeability of the sealant can be 40 - 60 g / (m 2 ·day). The components of the sealant may include silicone, fillers, and additives. The material of the frame 100 can be selected as an alloy with a certain strength and weather resistance.

[0054] In summary, the embodiment of the present application provides a photovoltaic module. The photovoltaic module provided by the embodiment of the present application includes a frame 100, a laminate 200, and an adhesive structure 300. The adhesive structure 300 wraps the edge of the laminate 200. The laminate 200 is connected to the frame 100 through the adhesive structure 300, and the frame 100 has no coverage on the light-receiving surface 201 of the laminate 200; the water-blocking cover 400 has a first end 403 and a second end 404. The first end 403 is connected to the light-receiving surface 201 of the laminate 200, and the second end 404 is connected to the frame 100. The inner side surface 405 of the water-blocking cover 400 is attached to the adhesive structure 300, and the outer side surface 406 of the water-blocking cover 400 is connected to the light-receiving surface 201 and the included angle between the two at the connection is an acute angle. In the embodiment of the present application, the frame 100 has no coverage on the light-receiving surface 201 of the laminate 200. Therefore, the frame 100 will not block the water (usually sewage containing dust) on the light-receiving surface 201 of the laminate 200 from draining to the surroundings. And the adhesive structure 300 wraps the edge of the laminate 200, so that the side surface 203 of the laminate 200 is completely wrapped in the adhesive structure 300, and water vapor is not easily infiltrated into the interior of the laminate 200 from the side surface 203 of the laminate 200, thereby improving the waterproof performance of the photovoltaic module. And the outer side surface 406 of the water-blocking cover 400 is connected to the light-receiving surface 201, that is, it can cover the edge of the adhesive structure 300. Therefore, it can prevent water vapor from entering between the adhesive structure 300 and the light-receiving surface 201, thereby improving the waterproof effect. The included angle between the outer side surface 406 of the water-blocking cover 400 and the light-receiving surface 201 is an acute angle. Therefore, when the water on the surface of the laminate 200 flows toward the edge, the water-blocking cover 400 has little blocking effect on the water, and the water will smoothly flow from the light-receiving surface 201 of the laminate 200 to the water-blocking cover 400, and then drain from the edge of the photovoltaic module. Therefore, the photovoltaic module provided by the embodiment of the present application takes into account both better waterproof performance and anti-dust accumulation performance.

[0055] The above is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A photovoltaic module, characterized in that: It includes a frame, a laminate, an adhesive structure and a water-blocking cover, wherein the adhesive structure wraps the edge of the laminate, the laminate is connected to the frame through the adhesive structure, and the frame has no coverage on the light-receiving surface of the laminate; the water-blocking cover has a first end and a second end, the first end is connected to the light-receiving surface of the laminate, the second end is connected to the frame, the inner side surface of the water-blocking cover is fitted with the adhesive structure, and the outer side surface of the water-blocking cover is connected to the light-receiving surface, and the angle between the two at the connection is an acute angle.

2. The photovoltaic module according to claim 1, characterized in that: The material of the water blocking cover is rubber, resin or fiber composite material.

3. The photovoltaic module according to claim 1, characterized in that: The outer side surface of the water blocking cover is a plane; or, the outer side surface of the water blocking cover is an outwardly convex arc surface.

4. The photovoltaic module according to claim 1, characterized in that: The included angle between the outer side surface of the water blocking cover and the light receiving surface is 10° to 40°.

5. The photovoltaic module according to claim 1, characterized in that: The first end of the water blocking cover has an end surface connected to the inner side surface and the outer side surface, and the end surface is attached to the light receiving surface of the laminate.

6. The photovoltaic module according to claim 1, characterized in that: A support member is provided on the water blocking cover, one end of the support member is connected to the water blocking cover, the other end of the support member extends along the thickness direction of the laminate and abuts against the frame, and the support member is embedded between the frame and the bonding structure.

7. The photovoltaic module according to claim 6, characterized in that: The support member is connected to the second end of the water blocking cover or to the inner side surface between the first end and the second end, and one side surface of the support member is attached to the frame.

8. The photovoltaic module according to any one of claims 1 to 7, characterized in that: The laminate has a backlight surface opposite to the light-receiving surface and a side surface connecting the backlight surface and the light-receiving surface, the bonding structure includes a front filling portion, a side filling portion and a back filling portion, the front filling portion is filled between the light-receiving surface of the laminate and the water-blocking cover, the back filling portion is arranged between the backlight surface of the laminate and the frame, the side filling portion is arranged between the side surface of the laminate and the frame, and the bonding structure is an integrated structure.

9. The photovoltaic module according to claim 8, characterized in that: The photovoltaic component further comprises a water-blocking layer disposed between the laminate and the adhesive structure, wherein the water-blocking layer is attached to at least one of the light-receiving surface, the side surface and the backlight surface of the laminate.

10. The photovoltaic module according to claim 9, characterized in that: The water-blocking layer is at least one of a water-blocking tape, a butyl rubber and a water-blocking coating.

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