A soot-resistant photovoltaic module and photovoltaic laminate

Abstract

The embodiment of the present application provides a dust-proof photovoltaic module and a photovoltaic laminated module, and relates to the field of photovoltaic modules. The dust-proof photovoltaic module comprises a laminated piece and a frame arranged around the laminated piece, the laminated piece and the frame are fixedly connected together through a glue layer, the frame comprises at least one dust-proof frame edge; along the height direction of the dust-proof photovoltaic module, the front surface of the laminated piece is higher than the dust-proof frame edge and the corresponding glue layer. The dust-proof photovoltaic module and the photovoltaic laminated module of the embodiment of the present application effectively reduce the dust accumulation problem of the module and meet the use requirement.

Description

Technical Field

[0001] This application relates to the field of photovoltaic modules, and more specifically, to a dust-resistant photovoltaic module and a photovoltaic cascade module. Background Technology

[0002] Currently, photovoltaic (PV) modules are mostly installed at an angle. For rectangular PV modules, after installation, the longer side is angled, while the shorter sides are positioned at lower and higher levels, respectively. Existing PV module frames often employ an A-side frame design. This means the frame edge includes an A-side covering the edge of the laminate's light-receiving surface, a B-side corresponding to the side of the laminate, and a groove bottom surface supporting the back edge of the laminate. The A-side, B-side, and groove bottom surface together form the frame edge groove. While the A-side of the frame edge provides protection for the laminate, it can lead to water and dust accumulation on the PV module, resulting in power degradation, increased risk of hot spot effects, reduced power generation and reliability, and higher maintenance costs for the power plant.

[0003] To address these issues, conventional dust accumulation prevention solutions include: slotting the lower frame edge after the photovoltaic modules are installed at an angle, adding water-guiding fasteners, removing the lower frame edge A-side, or using a design without an A-side for all frame edges. However, when these photovoltaic modules are placed horizontally, the frame is still higher than or equal to the laminate, leaving a risk of dust accumulation even after installation. Utility Model Content

[0004] The purpose of this application is to provide a dust-resistant photovoltaic module and a photovoltaic cascade module, which effectively reduces the dust accumulation problem of the module and meets the usage requirements.

[0005] In a first aspect, embodiments of this application provide a dust-proof photovoltaic module, which includes a laminate and a frame disposed around the laminate. The laminate and the frame are fixedly connected together by an adhesive layer, and the frame includes at least one dust-proof frame edge.

[0006] Along the height direction of the anti-dust photovoltaic module, the front side of the laminate is higher than the edge of the anti-dust frame and the adhesive layer.

[0007] In the above implementation process, the frame of the photovoltaic module includes an anti-dust accumulation frame edge. The anti-dust accumulation frame edge adopts a frameless A-side design, and the front of the laminate is higher than the anti-dust accumulation frame edge and the adhesive layer. Whether the photovoltaic module is installed vertically (tilted installation, vertical installation) or horizontally (horizontal installation), one of the anti-dust accumulation frame edges can be placed in the lowest position, which can ensure that the edge position will not block the front of the laminate, thereby maximizing the anti-dust accumulation performance of the photovoltaic module, effectively reducing the dust accumulation problem of the module, and meeting the usage requirements.

[0008] In one possible implementation, the anti-dust frame includes a B-side corresponding to the side of the laminate and a groove bottom surface supporting the back of the laminate. The height direction of the anti-dust photovoltaic module is the height direction of the B-side and the side of the laminate. The adhesive layer includes a first adhesive layer located between the B-side and the side of the laminate, and a second adhesive layer located between the groove bottom surface and the back of the laminate. The front of the laminate is higher than the B-side and higher than the first adhesive layer, that is, the front of the laminate protrudes beyond the top surface of the B-side and the first adhesive layer.

[0009] In the above implementation process, the structure of the anti-dust accumulation frame is simple.

[0010] In one possible implementation, the thickness of the first adhesive layer is 0.5-1 mm, and the thickness difference of the first adhesive layer at different locations is less than 0.35 mm.

[0011] In the above implementation process, the thickness of the first adhesive layer is uniform, indicating that the B side of the anti-dust frame edge is not provided with a component to prevent adhesive overflow, that is, the upper edge of the B side is not provided with a blocking part to prevent adhesive overflow, and there are no obviously recessed overflow grooves in other positions. Therefore, the structure of the anti-dust frame edge is simple and easy to manufacture.

[0012] In one possible implementation, the thickness of the second adhesive layer is 0.4-0.8 mm.

[0013] In one possible implementation, the B-side and the bottom surface of the groove are provided with raised and recessed patterns.

[0014] In one possible implementation, the height difference between the front side of the laminate and the edge of the anti-dust frame and the upper edge of the adhesive layer is within 2 mm.

[0015] In the above process, the height difference between the front of the laminate and the edge of the anti-dust frame and the adhesive layer is controlled within 2mm to meet the initial inspection standard and prevent the laminate from falling off due to its excessive position.

[0016] Secondly, embodiments of this application provide a photovoltaic cascade module, which includes a plurality of anti-dust-accumulation photovoltaic modules provided in the first aspect. The anti-dust-accumulation photovoltaic modules are stacked in the same direction, and rigid gaskets are provided between the anti-dust-accumulation frame edges of adjacent anti-dust-accumulation photovoltaic modules.

[0017] In the above implementation process, anti-dust-accumulation photovoltaic modules are stacked to form photovoltaic laminated modules to meet process or transportation requirements. Rigid gaskets are used to isolate and support the anti-dust-accumulation frame edges, preventing the laminated components from colliding with each other at the edges of the anti-dust-accumulation frame. Specifically, during the photovoltaic module curing process, the laminated components are stacked face down for curing. The rigid gaskets can lift up the bent parts of the anti-dust-accumulation photovoltaic modules that sink due to gravity, thereby achieving effective curing of the laminated components and the frame. During the photovoltaic module packaging and transportation process, the photovoltaic modules are also stacked together. The rigid gaskets play a role in protecting protruding laminated components and providing support, and can be shared with conventional module packaging lines.

[0018] In one possible implementation, the rigid gasket is made of PE; the thickness of the rigid gasket is 3.5-4 mm.

[0019] In the above process, the rigid gaskets are made of a certain material and have a certain thickness to meet the functions of isolating and supporting the frame edges to prevent dust accumulation.

[0020] In one possible implementation, at least three rigid pads are provided for each of the anti-dust accumulation frame edges, with the rigid pads spaced apart at both ends and the middle of the anti-dust accumulation frame edge.

[0021] In the above implementation process, the rigid gaskets are set according to the above rules to meet the protection function of the laminate. Specifically, rigid gaskets are set at both ends of the anti-dust frame to prevent the frame from directly contacting the laminate due to misalignment of adjacent photovoltaic modules, which would lead to the risk of damage. A rigid gasket is set in the middle of the anti-dust frame to support the laminate from the bent part that sinks under gravity.

[0022] In one possible implementation, the spacing between adjacent rigid pads is 400-450 mm.

[0023] In the above implementation process, rigid gaskets are set at certain intervals to achieve the functions of isolation and support while reducing the number of rigid gaskets used. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a dust-proof photovoltaic module provided in an embodiment of this application;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the middle and short sides;

[0027] Figure 3 This is a schematic diagram of the structure of a photovoltaic cascade module provided in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of another photovoltaic cascade module provided in an embodiment of this application.

[0029] Icons: 100 - Anti-dust photovoltaic module; 110 - Laminated component; 120 - Anti-dust frame edge; 130 - Protective frame edge; 121 - B side; 122 - Slot bottom; 123 - First adhesive layer; 124 - Second adhesive layer; 125 - Embossed pattern; 200 - Rigid gasket; 300 - Support; 400 - Bundling strap. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used 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. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] First Embodiment

[0038] Please refer to Figure 1 and Figure 2 This embodiment provides a dust-proof photovoltaic module 100, which includes a laminate 110 and a frame disposed around the laminate 110. The laminate 110 and the frame are fixedly connected together by an adhesive layer. The frame includes at least one dust-proof frame edge 120. Along the height direction of the dust-proof photovoltaic module 100, the front side of the laminate 110 is higher than the dust-proof frame edge 120 and the adhesive layer.

[0039] In this embodiment, the laminate 110 can be a single-glass module or a double-glass module. The "front" and "back" of the laminate 110 refer to the two opposing surfaces of the laminate 110. Typically, the "front" refers to the surface of the laminate 110 that faces the sun and receives sunlight after the photovoltaic module is installed, while the "back" refers to the surface opposite the front. This embodiment does not limit the installation method of the dust-resistant photovoltaic module 100; it can be installed vertically or horizontally, as long as the front of the laminate 110 faces the sun.

[0040] In this embodiment, the laminate 110 is rectangular, with two opposite long sides and two opposite short sides. Correspondingly, the border is rectangular, including two frame edges corresponding to the long sides and two frame edges corresponding to the short sides. In other embodiments, the laminate 110 and the border can also be other shapes, such as squares or polygons.

[0041] In some embodiments of this application, the thickness of the laminate 110 is 4-5 mm, and in this embodiment, the thickness of the laminate 110 is 4.6 mm.

[0042] In some embodiments of this application, the laminate 110 has anti-dust accumulation frame edges 120 on its two long sides, which are designed without an A-side border. The laminate 110 also has protective frame edges 130 on its two short sides, which are designed with an A-side border. In other embodiments, the laminate 110 has an anti-dust accumulation frame edge 120 on only one short side, and protective frame edges 130 on the other short side and both long sides.

[0043] In this embodiment, the dust-proof photovoltaic module 100 is aligned along its height direction ( Figure 2 As shown by the double arrows, the front of the laminate 110 is higher than the anti-dust frame edge 120 and the adhesive layer. After the anti-dust photovoltaic module 100 is in place, the anti-dust frame edge 120 on one short side of the laminate 110 is located at the lowest position: when the anti-dust photovoltaic module 100 is installed vertically, this short side of the laminate 110 is at the lowest position of the laminate 110, and the position of the anti-dust frame edge 120 on it is even lower; when the anti-dust photovoltaic module 100 is installed horizontally, all edges of the laminate 110 are at the same height, and the anti-dust frame edge 120 is lower than this height.

[0044] Therefore, the anti-dust-accumulation photovoltaic module 100 of this application embodiment ensures that, after installation, the height of the anti-dust-accumulation frame edge 120 and the upper edge of the adhesive strip is lower than that of the laminate 110, i.e., the laminate 110 protrudes beyond the anti-dust-accumulation frame edge 120 and the upper edge of the adhesive strip. This design demonstrates significant advantages in many aspects. Specifically, this design can effectively reduce the problem of dust accumulation on the short or long sides of the module during vertical installation in dusty and rainy areas. Dust accumulation often leads to power loss and hot spot risk in photovoltaic modules. By reducing the height of the frame edge and the upper edge of the adhesive layer at the short side of the laminate 110, this application embodiment can greatly reduce dust accumulation, thereby reducing these potential problems.

[0045] In some embodiments of this application, the anti-dust frame edge 120 includes a B-side 121 corresponding to the side of the laminate 110 and a groove bottom surface 122 supporting the back of the laminate 110. The adhesive layer includes a first adhesive layer 123 located between the B-side 121 and the side of the laminate 110, and a second adhesive layer 124 located between the groove bottom surface 122 and the back of the laminate 110. The front of the laminate 110 is higher than the B-side 121 and higher than the first adhesive layer 123.

[0046] In some embodiments of this application, surface B 121 does not have any components for preventing adhesive overflow, including no blocking portion for preventing adhesive overflow along the upper edge of surface B 121, and no obviously recessed overflow grooves at other locations. Correspondingly, the thickness of the first adhesive layer 123 filling between surface B 121 and the side of the laminate 110 is 0.5-1 mm, and the thickness difference of the first adhesive layer 123 at different locations is less than 0.35 mm. In addition, the thickness of the second adhesive layer 124 filling between the bottom surface 122 of the groove and the back surface of the laminate 110 is 0.4-0.8 mm.

[0047] In some embodiments of this application, the height difference between the front side of the laminate 110 and the edge of the anti-dust frame 120 and the upper edge of the adhesive layer is within 2mm to meet the initial inspection standards.

[0048] The anti-dust frame 120 of this application embodiment adopts a frameless A-side design. This design eliminates the A-side of the frame that is usually set on the short side of the laminate 110. Instead, the frame and the upper edge of the adhesive layer are set on the short side of the laminate 110 and are slightly lower than the laminate 110.

[0049] In some embodiments of this application, the structure of the protective frame edge 130 is similar to the structure of the anti-dust accumulation frame edge 120. Figure 2 Based on the anti-dust frame 120 shown, the protective frame 130 includes a B-side 121 corresponding to the side of the laminate 110 and a groove bottom surface 122 supporting the back of the laminate 110, and also includes an A-side corresponding to the front of the laminate 110. The A-side, B-side 121 and groove bottom surface 122 together constitute the frame groove.

[0050] In some embodiments of this application, the frame edge (anti-dust frame edge 120, protective frame edge 130) can also eliminate the C-side located on the back of the laminate 110, so that the back of the laminate 110 is partially unobstructed, reducing the back shading of the double glass module, improving the back efficiency of the module, and reducing the module operation and maintenance costs.

[0051] In some embodiments of this application, the B-side 121 and the bottom surface 122 of the frame edge (anti-dust frame edge 120, protective frame edge 130) near the laminate 110 can be provided with a raised / lower texture 125, which, in conjunction with the adhesive layer, increases the fixing effect on the laminate 110. The raised / lower texture 125 can be designed as a wave pattern, with a height difference of 0.1-0.35mm.

[0052] Second Embodiment

[0053] Please refer to the following: Figure 3 This embodiment provides a photovoltaic cascade module, comprising a plurality of anti-dust accumulation photovoltaic modules 100 according to the first embodiment. The anti-dust accumulation photovoltaic modules 100 are stacked in the same direction, and rigid spacers 200 are provided between the anti-dust accumulation frame edges 120 of adjacent anti-dust accumulation photovoltaic modules 100. In this embodiment, the anti-dust accumulation photovoltaic modules 100 are horizontally arranged with their front faces downwards, and all anti-dust accumulation photovoltaic modules 100 are stacked together in this arrangement direction. Rigid spacers 200 are provided between the anti-dust accumulation frame edges 120 of the short sides of adjacent anti-dust accumulation photovoltaic modules 100. The bottommost anti-dust accumulation photovoltaic module 100 is placed on a support 300 (such as a tray), and a rigid spacer 200 is also provided between the anti-dust accumulation frame edge 120 of the short side of this anti-dust accumulation photovoltaic module 100 and the tray. This photovoltaic cascade module can be used in the module curing process. The rigid spacers 200 fill in the missing parts of the short sides of the module, achieving maximum compatibility with existing production lines and improving the economic efficiency of the module manufacturing process.

[0054] In some embodiments of this application, the rigid gasket 200 is made of PE; the thickness of the rigid gasket 200 is 3.5-4mm.

[0055] In some embodiments of this application, at least three rigid gaskets 200 are provided for each anti-dust accumulation frame edge 120. The rigid gaskets 200 are spaced apart at both ends and the middle of the anti-dust accumulation frame edge 120, with a spacing of 400-450mm between adjacent rigid gaskets 200. In this embodiment, rigid gaskets 200 are provided at both ends and the middle of each short side of the component.

[0056] Third Embodiment

[0057] Please refer to the following: Figure 4The photovoltaic cascade module provided in this embodiment differs from the second embodiment in that: in this embodiment, the anti-dust accumulation photovoltaic module 100 is vertically arranged with its front facing one side, and all the anti-dust accumulation photovoltaic modules 100 are stacked together in this arrangement direction and tied together by strapping 400. The position of the strapping 400 usually corresponds to the position of the rigid pad 200. The anti-dust accumulation frame edge 120 of the outer anti-dust accumulation photovoltaic module 100 is also provided with a rigid pad 200 corresponding to the strapping 400, so as to avoid the strapping 400 directly contacting the laminate 110 and causing it to break.

[0058] This photovoltaic cascade module can be used during the module packaging and transportation process. All dust-resistant photovoltaic modules 100 are supported by supports 300 underneath to facilitate overall movement.

[0059] In summary, the dust-resistant photovoltaic modules and photovoltaic cascade modules of this application effectively reduce the dust accumulation problem of the modules and meet the usage requirements.

[0060] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A photovoltaic module with anti-dust accumulation, characterized in that, It includes a laminate and a frame disposed around the laminate, the laminate and the frame being fixedly connected together by an adhesive layer, and the frame including at least one anti-dust frame edge; Along the height direction of the anti-dust photovoltaic module, the front side of the laminate is higher than the edge of the anti-dust frame and the adhesive layer.

2. The anti-dust photovoltaic module according to claim 1, characterized in that, The anti-dust frame includes a B-side corresponding to the side of the laminate and a groove bottom surface supporting the back of the laminate. The adhesive layer includes a first adhesive layer located between the B-side and the side of the laminate, and a second adhesive layer located between the groove bottom surface and the back of the laminate. The front of the laminate is higher than the B-side and higher than the first adhesive layer.

3. The anti-dust photovoltaic module according to claim 2, characterized in that, The thickness of the first adhesive layer is 0.5-1mm, and the thickness difference of the first adhesive layer at different locations is less than 0.35mm.

4. The anti-dust photovoltaic module according to claim 2, characterized in that, The thickness of the second adhesive layer is 0.4-0.8 mm.

5. The anti-dust photovoltaic module according to claim 2, characterized in that, The B-side and the bottom surface of the groove are provided with raised and recessed patterns.

6. The anti-dust-accumulation photovoltaic module according to claim 1 or 2, characterized in that, The height difference between the front side of the laminate and the edge of the anti-dust frame and the upper edge of the adhesive layer is within 2mm.

7. A photovoltaic cascade module, characterized in that, It includes a plurality of anti-dust-accumulation photovoltaic modules as described in any one of claims 1 to 6, wherein the anti-dust-accumulation photovoltaic modules are stacked in the same direction, and rigid gaskets are provided between the anti-dust-accumulation frame edges of adjacent anti-dust-accumulation photovoltaic modules.

8. The photovoltaic tandem module according to claim 7, characterized in that, The rigid gasket is made of PE; the thickness of the rigid gasket is 3.5-4mm.

9. The photovoltaic tandem module according to claim 7 or 8, characterized in that, At least three rigid pads are provided for each of the anti-dust accumulation frame edges, with the rigid pads spaced apart at both ends and the middle of the anti-dust accumulation frame edge.

10. The photovoltaic cascade module according to claim 9, characterized in that, The spacing between adjacent rigid pads is 400-450 mm.

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