Anti-pollution photovoltaic frame and photovoltaic module

Abstract

The utility model discloses an anti-fouling photovoltaic frame and a photovoltaic module, the anti-fouling photovoltaic frame comprises a bottom support member, a middle connecting member and a top support member, the bottom end of the middle connecting member is connected with the bottom support member, the top end of the middle connecting member is connected with the top support member, and the top end of the middle connecting member is connected with the top support member. The top supporting piece comprises a bottom face supporting plate and a side face glue overflowing groove. The side face glue overflowing groove is used for being connected with the side face of the laminated piece in an adhesive mode, the top of the side face glue overflowing groove is a plane, and the plane of the top of the side face glue overflowing groove is flush with the upper surface of the laminated piece. The bottom of the side face glue overflowing groove is connected with the bottom face supporting plate, the bottom face supporting plate is used for being connected with the bottom face of the laminated piece in an adhesive mode, and a raised grain structure is arranged on the bottom face supporting plate. According to the invention, the glue overflow in the packaging process can be avoided while the dirt accumulation of the frame is improved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic modules, and in particular to a contamination-proof photovoltaic frame and a photovoltaic module. Background Art

[0002] At present, with the rapid development of the photovoltaic industry, distributed photovoltaics have gradually entered thousands of households, expanding the application scenarios of photovoltaic modules. New problems have also emerged in the application of distributed photovoltaic modules. Since the top surface of the frame is higher than the upper surface of the photovoltaic module, it is easy to form a contamination area near the photovoltaic frame. The existence of the contamination area will block the cell from absorbing light and reduce the power generation of the module.

[0003] In order to fundamentally solve the problem of contamination on photovoltaic modules, a frame structure in which the top of the frame is flush with the upper surface of the photovoltaic module has entered the market, but this has led to serious glue overflow during the packaging process and reduced sealing of the laminate. Therefore, how to solve the problem of contamination on photovoltaic modules and avoid glue overflow during the packaging process is an important problem currently faced. Utility Model Content

[0004] The present application provides a contamination-proof photovoltaic frame to solve the above-mentioned technical problems.

[0005] In a first aspect, according to some embodiments, the present application provides an anti-fouling photovoltaic frame, including:

[0006] A bottom support member, a middle connection member and a top support member, wherein the bottom end of the middle connection member is connected to the bottom support member, the top end of the middle connection member is connected to the top support member, and the top support member includes a bottom support plate and a side glue overflow groove;

[0007] The side glue overflow groove is used to be bonded to the side of the laminate, the top of the side glue overflow groove is a plane, the top plane of the side glue overflow groove is flush with the upper surface of the laminate or the top plane of the side glue overflow groove is lower than the upper surface of the laminate;

[0008] The bottom of the side glue overflow groove is connected to the bottom support plate, and the bottom support plate is used for bonding and connecting with the bottom surface of the laminate, and a corrugated structure is arranged on the bottom support plate.

[0009] Preferably, the wavy structure comprises protrusions and grooves arranged alternately, and the height of the protrusions gradually increases along the direction away from the side glue overflow groove, and / or the depth of the grooves gradually increases.

[0010] Preferably, the side glue overflow groove includes a vertical end surface along the side direction of the laminate, the vertical end surface is used to fit with the side of the laminate, and the height of the vertical end surface along the side direction of the laminate is not greater than the thickness of the laminate.

[0011] Preferably, the height of the vertical end surface is not greater than 4 mm.

[0012] Preferably, the side glue overflow groove comprises a first buffer slope which is arranged obliquely, wherein the upper end of the first buffer slope is connected to the vertical end surface, and the lower end of the first buffer slope is inclined toward the side glue overflow groove;

[0013] The length of the first buffer slope along the bottom surface of the laminate is no more than 2 mm.

[0014] Preferably, the side glue overflow groove includes a second buffer slope arranged opposite to the first buffer slope, and a glue storage groove is formed between the first buffer slope and the second buffer slope.

[0015] Preferably, the second buffer slope is inclined, the lower end of the second buffer slope is connected to the bottom support plate, and the upper end of the second buffer slope is inclined away from the side overflow glue groove;

[0016] The height of the second buffer slope along the side direction of the laminate is not greater than 3 mm.

[0017] Preferably, the bottom support plate is inclined upward, with an inclination angle of no more than 5 degrees; and / or

[0018] The lower surface of the bottom support plate is formed with convex ribs; and / or

[0019] The upper surface of the bottom support member is formed with convex ribs.

[0020] In a second aspect, according to some embodiments, the present application provides a photovoltaic assembly, wherein the photovoltaic assembly comprises a laminate and at least one photovoltaic frame as described in the first aspect.

[0021] Preferably, the anti-fouling photovoltaic frame is a long frame or a short frame, and the anti-fouling photovoltaic frame is connected and fixed to other frames through angle keys.

[0022] The anti-fouling photovoltaic frame provided by the embodiment of the present application is provided with a side glue overflow groove whose top is a plane and the top plane is flush with the upper surface of the laminate, and a bottom support plate is provided at the bottom of the side glue overflow groove, the bottom support plate is adhesively connected to the bottom surface of the laminate, and a wavy structure is provided on the bottom support plate. Different from the A-side design of the traditional photovoltaic frame, the top of the side glue overflow groove is a plane, which avoids the formation of a contamination area in the traditional photovoltaic frame due to the frame height being higher than the height of the photovoltaic laminate, which affects the outflow of water. Therefore, it can effectively solve the problem of reduced power generation efficiency of distributed photovoltaic modules due to surface contamination. At the same time, the support plate is set to a wavy structure, and combined with the side glue overflow groove, it can effectively prevent glue overflow. The present application can effectively eliminate the contamination belt formed on the photovoltaic module by the water accumulation area, solve the problem of contamination accumulation in the photovoltaic module, reduce the risk of glue overflow in the photovoltaic module, and avoid glue overflow during the packaging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of a three-dimensional structure of a photovoltaic frame for preventing dirt accumulation provided in an embodiment of the present application;

[0025] Figure 2 A schematic cross-sectional view of a photovoltaic frame for preventing dirt accumulation provided in an embodiment of the present application;

[0026] Figure 3 A partial cross-sectional schematic diagram of an anti-fouling photovoltaic frame provided in an embodiment of the present application;

[0027] Figure 4 One of the combined schematic diagrams of an anti-fouling photovoltaic frame provided in an embodiment of the present application;

[0028] Figure 5 The second schematic diagram of a combination of a dirt-proof photovoltaic frame provided in an embodiment of the present application.

[0029] Figure numerals: 210 side glue overflow groove; 220 bottom support plate; 230 middle connector; 240 bottom support member; 250 top support member; 211 vertical end face; 212 first buffer slope; 213 glue storage groove; 214 second buffer slope; 221 protrusion; 222 groove; 260 rib; 300 laminate; 301 glass; 302 adhesive film; 303 battery cell; 304 back panel. DETAILED DESCRIPTION

[0030] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. In the description of this application, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, and it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The following is a further detailed description of an anti-fouling photovoltaic frame provided by this embodiment in conjunction with the accompanying drawings. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other without conflict. The following will refer to the accompanying drawings and the embodiments to explain the application in detail. Figure 1 , and combined with Figure 2 A photovoltaic frame that prevents dirt accumulation includes: a middle connector 230, a bottom support member 240, and a top support member 250. The bottom end of the middle connector 230 is connected to the bottom support member 240, and the top of the middle connector 230 is connected to the top support member 250. The top support member 250 includes a bottom support plate 220 and a side glue overflow groove 210. The side glue overflow groove 210 is used to be bonded to the side of the laminate. The top of the side glue overflow groove 210 is a plane. The top plane of the side glue overflow groove 210 is flush with the upper surface of the laminate or the top plane of the side glue overflow groove 210 is lower than the upper surface of the laminate. The bottom of the side glue overflow groove 210 is connected to the bottom support plate 220. The bottom support plate 220 is used to be bonded to the bottom surface of the laminate, and a wavy structure is arranged on the bottom support plate 220.

[0032] Specifically, Figure 1 A three-dimensional schematic diagram of a frame provided in an embodiment of the present application, Figure 2 yes Figure 1Schematic diagram of the cross section of the photovoltaic frame. The frame includes a middle connector 230, a bottom support member 240, and a top support member 250, the bottom end of the middle connector 230 is connected to the bottom support member 240, and the top end of the middle connector 230 is connected to the top support member 250. The top support member 250 includes a bottom support plate 220 and a side overflow glue groove 210, the photovoltaic laminate is placed horizontally, the upper surface of the photovoltaic laminate after being placed horizontally is flush with the side overflow glue groove 210 of the frame B surface, and the lower surface of the photovoltaic laminate after being placed horizontally is placed on the bottom support plate 220, wherein the gap is filled with sealant. Wherein, the upper and lower surfaces of the photovoltaic laminate are along the horizontal direction, and the side of the photovoltaic laminate is along the vertical direction.

[0033] Figure 2 The cross-sectional schematic diagram of the frame provided in the embodiment of the present application, the frame adopts a design without an A surface, including a side glue overflow groove 210 on the B surface, a bottom support plate 220, a middle connector 230, and a bottom support member 240 on the C surface of the frame. The bottom support plate 220 is set to an inclined wavy structure, and the wavy pattern itself can increase the bonding performance between the frame and the laminate, thereby reducing the flow rate of the glue, increasing the contact area, reducing the overflow of glue, and effectively achieving the effect of preventing the overflow of glue. The bottom support plate 220 is arranged relative to the bottom support member 240 on the C surface of the frame, and is used to carry the laminate. The bottom support member 240 on the C surface of the frame is the main bearing part and has the function of supporting the photovoltaic module. At the same time, a mounting hole is set on the C surface 240 of the frame for installing the module outdoors.

[0034] The anti-fouling photovoltaic frame provided in the embodiment of the present application includes a middle connecting member 230, a bottom support member 240, and a top support member 250. The top support member 250 includes a bottom support plate 220 and a side glue overflow groove 210. The top of the side glue overflow groove 210 is a plane, and the top plane of the side glue overflow groove 210 is flush with the upper surface of the laminate. The bottom of the side glue overflow groove 210 is connected to the bottom support plate 220, and the bottom support plate 220 is adhesively connected to the bottom surface of the laminate, and a wavy structure is arranged on the bottom support plate 220. The present application is different from the A-side design of the traditional photovoltaic frame. Since the top surface of the traditional A-side design is higher than the upper surface of the photovoltaic module, it is easy to form a dirt accumulation area near the photovoltaic frame. The existence of the dirt accumulation area will block the solar cells from absorbing light and reduce the power generation of the module. The top of the side glue overflow groove 210 in the present application is a plane to avoid the formation of a dirt accumulation area, which can effectively solve the problem of reduced power generation efficiency of distributed photovoltaic modules due to surface dirt. At the same time, the support plate 220 is set to a wavy structure, and combined with the side glue overflow groove, it can effectively prevent glue overflow and reduce the risk of glue overflow in photovoltaic modules.

[0035] In an optional embodiment, the wavy structure includes protrusions 221 and grooves 222 that are alternately arranged, and the height of the protrusions 221 gradually increases along the direction away from the side overflow groove 210, and / or the depth of the grooves 222 gradually increases.

[0036] Specifically, Figure 2 As shown, the wave structure is composed of protrusions 221 and grooves 222 arranged alternately, and the grooves 222 are used to store glue. The height of the protrusions 221 of the wave structure gradually increases along the direction away from the overflowing glue groove, so that the spacing between two adjacent protrusions 221 gradually increases, which is more conducive to storing glue. And / or, the depth of the grooves 222 of the wave structure gradually increases along the direction away from the overflowing glue groove, so that the space for storing glue in the grooves 222 gradually increases, which is more conducive to storing glue, reducing overflowing glue and increasing the viscosity between the bottom support plate 220 and the photovoltaic laminate.

[0037] In an optional embodiment, the side glue overflow groove 210 includes a vertical end surface 211 along the side direction of the laminate, the vertical end surface 211 is used to fit with the side of the laminate, and the height of the vertical end surface 211 along the side direction of the laminate is not greater than the glass thickness of the laminate.

[0038] Specifically, Figure 2 As shown, combined with Figure 3 , Figure 3 This is a cross-sectional schematic diagram of the side glue overflow groove 210 of the frame B surface provided in the embodiment of the present application. Figure 3 As shown, the side glue overflow groove 210 includes a vertical end surface 211 along the side direction of the laminate. The vertical end surface 211 of the side glue overflow groove 210 is arranged along the vertical direction, and the risk of glass explosion can be reduced when the vertical end surface 211 contacts the laminate.

[0039] In an optional embodiment, the height of the vertical end surface 211 is no greater than 4 mm.

[0040] Specifically, Figure 3 As shown, combined with Figure 4 The height of the vertical end face 211 along the vertical direction is less than the thickness of the glass, for example, the height of the vertical end face 211 is not more than 4 mm. This is beneficial for the sealant to seal the edge of the laminate, reduce grid line corrosion and PID attenuation effect caused by water vapor entering the laminate, and ensure the normal power generation operation of the photovoltaic module.

[0041] In an optional embodiment, the side glue overflow groove 210 includes a first buffer slope 212 that is inclined, the upper end of the first buffer slope 212 is connected to the vertical end surface 211 , and the lower end of the first buffer slope 212 is inclined toward the side glue overflow groove 210 .

[0042] Specifically, Figure 3 As shown, combined with Figure 4 The side overflow glue groove 210 includes an inclined first buffer slope 212, the upper end of the first buffer slope 212 is connected to the vertical end surface 211, and the lower end of the first buffer slope 212 is inclined in a direction away from the laminate, that is, inclined in the direction of the side overflow glue groove 210. The first buffer slope 212 is set at a certain inclination angle, and the inclination angle of the first buffer slope is 0 to 90 degrees, so that the sealant can slowly flow to the edge of the laminate to seal the edge of the laminate.

[0043] In an optional embodiment, the length of the first buffer slope 212 along the bottom surface of the laminate is no more than 2 mm.

[0044] Specifically, Figure 3 As shown, combined with Figure 4 The length of the first buffer slope 212 along the bottom surface direction of the laminate is not greater than 2 mm, that is, the length of the first buffer slope 212 along the horizontal direction is less than or equal to 2 mm. The length of the first buffer slope 212 along the horizontal direction determines the cavity formed between the buffer slope and the glue storage tank. The cavity has a certain elastic deformation ability, which can provide deformation space for the extrusion of the laminate when the laminate is subjected to a large force.

[0045] In an optional embodiment, the side glue overflow groove 210 includes a second buffer slope 214 arranged opposite to the first buffer slope 212 , and a glue storage groove 213 is formed between the first buffer slope 212 and the second buffer slope 214 .

[0046] Specifically, Figure 3 As shown, combined with Figure 4 The side overflow glue groove 210 includes a second buffer slope 214 arranged opposite to the first buffer slope 212, and a glue storage groove 213 is formed between the first buffer slope 212 and the second buffer slope 214. The side overflow glue groove 210 includes a vertical end face 211, a first buffer slope 212, a glue storage groove 213, and a second buffer slope 214. One end of the second buffer slope 214 is connected to the bottom support plate 220. The second buffer slope 214 is arranged at the bottom of the side overflow glue groove 210, and the second buffer slope 214 can slow down the flow speed of the sealant in the side overflow glue groove 210 to prevent overflow.

[0047] In an optional embodiment, the second buffer slope 214 is inclined, the lower end of the second buffer slope 214 is connected to the bottom support plate 220, and the upper end of the second buffer slope 214 is inclined in a direction away from the side glue overflow groove 210; the height of the second buffer slope 214 along the side direction of the laminate is not greater than 3 mm.

[0048] Specifically, the second buffer slope 214 is inclined, and the upper end of the second buffer slope 214 is inclined toward the laminate, that is, inclined toward the direction away from the side overflow groove 210. The edge of the second buffer slope 214 does not exceed the vertical end surface 211 in the horizontal direction to avoid squeezing the laminate, and the edge does not exceed the upper EVA (ethylene-vinyl acetate copolymer) of the laminate in the vertical direction to enhance the reliability of the connection between the laminate and the frame.

[0049] In an optional embodiment, the bottom support plate 220 is tilted upward with an inclination angle of no more than 5 degrees; and / or a convex rib 260 is formed on the lower surface of the bottom support plate 220; and / or a convex rib 260 is formed on the upper surface of the bottom support member 240.

[0050] Specifically, Figure 1-Figure 5 As shown, the corrugated structure of the bottom support plate 220 is tilted upward, and the tilt angle of the bottom support plate 220 is not greater than 5 degrees. The tilted corrugated structure can prevent the laminate from being squeezed by the corrugated structure due to equipment errors during the framing process, resulting in the explosion of the photovoltaic module. Figure 2 As shown, a convex rib 260 is formed on the lower surface of the bottom support plate 220, and / or a convex rib 260 is formed on the upper surface of the bottom support member 240, which can enhance the strength of the photovoltaic frame and improve the stability of the photovoltaic module.

[0051] The anti-fouling photovoltaic frame provided by the embodiment of the present application includes a middle connector 230, a bottom support member 240, and a top support member 250. The top support member 250 includes a bottom support plate 220 and a side glue overflow groove 210. The top of the side glue overflow groove 210 is a plane. The top plane of the side glue overflow groove 210 is flush with the upper surface of the laminate. The bottom of the side glue overflow groove 210 is connected to the bottom support plate 220. The bottom support plate 220 is bonded to the bottom surface of the laminate, and a corrugated structure is provided on the bottom support plate 220. The side glue overflow groove 210 is connected to the bottom support plate 220. The bottom support plate 220 is an inclined corrugated structure, which is used together to fix the laminate. The bottom support member 240 is located at the bottom of the frame, which is convenient for improving the bearing performance of the frame and the installation of photovoltaic components. The present application is different from the A-side design of the traditional photovoltaic frame. The top of the side glue overflow groove 210 is a plane, which can effectively solve the problem of reduced power generation efficiency of distributed photovoltaic modules due to surface dirt. At the same time, the support plate is set to a wavy structure, which can effectively prevent glue overflow. The photovoltaic module frame of the present application can effectively eliminate the dirt accumulation belt formed on the photovoltaic module by the water accumulation area, and prevent water vapor from entering the laminate, reducing the risk of glue overflow from the photovoltaic module to the surface of the laminate and the risk of explosion. Another embodiment of the present application provides a photovoltaic module, which includes a laminate and at least one anti-fouling photovoltaic frame in the above embodiment.

[0052] like Figure 4 As shown, combined with Figure 5 , Figure 4 and Figure 5 The schematic diagram of bonding the anti-fouling frame provided in the above embodiment of the present application to the laminate 300 is shown. The laminate 300 includes glass 301, adhesive film 302, battery cell 303, and back plate 304. Figure 4 The installation method is to apply sealant in the first buffer slope 212 and the glue storage tank 213, and after the back plate 304 of the laminate 300 is completely fitted with the end surface, move it in the vertical direction so that the sealant bonds the laminate 300 and the frame 230. Figure 5 The installation method is to apply sealant on the support plate 220, and the laminate 300 is pushed horizontally in the horizontal direction to carry the sealant into the B-side glue storage tank for fixing the laminate.

[0053] In an optional implementation, the anti-fouling photovoltaic frame is a long frame or a short frame, and the anti-fouling photovoltaic frame is connected and fixed to other frames through corner keys.

[0054] Specifically, the photovoltaic module frame is composed of four frames, among which the anti-fouling photovoltaic frame is a short frame or a long frame in the photovoltaic combination frame. In order to achieve the purpose of preventing the module from fouling and improving the power generation performance of the photovoltaic module, the anti-fouling frame of the photovoltaic module needs to be installed at the lower end of the inclination angle. If the lower end of the inclination angle is a long frame, the anti-fouling photovoltaic frame is a long frame, and if the lower end of the inclination angle is a short frame, the anti-fouling photovoltaic frame is a short frame.

[0055] The anti-fouling photovoltaic frame is connected and fixed to other frames through angle keys, and the angle keys are used to fix adjacent photovoltaic frames, so that the frames have good matching and can be adapted to a variety of installation methods, with good cost reduction benefits. Compared with the prior art, the anti-fouling frame and photovoltaic module provided by the present application can effectively eliminate the impact of dirt accumulation on the power generation of photovoltaic modules, while preventing water vapor from entering and corroding the modules, and reducing the risk of glue overflow.

[0056] It should be understood that the above specific embodiments of the present application are only used to illustrate or explain the principles of the present application, and do not constitute a limitation to the present application. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present application should be included in the protection scope of the present application. In addition, the claims attached to the present application are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A photovoltaic frame that prevents dirt accumulation, characterized in that: The frame includes: a bottom support member, a middle connection member and a top support member, the bottom end of the middle connection member is connected to the bottom support member, the top end of the middle connection member is connected to the top support member, and the top support member includes a bottom support plate and a side glue overflow groove; The side glue overflow groove is used for bonding and connecting with the side of the laminate, the top of the side glue overflow groove is a plane, the top plane of the side glue overflow groove is flush with the upper surface of the laminate or the top plane of the side glue overflow groove is lower than the upper surface of the laminate; The bottom of the side glue overflow groove is connected to the bottom support plate, and the bottom support plate is used for bonding and connecting with the bottom surface of the laminate, and a corrugated structure is arranged on the bottom support plate.

2. The anti-fouling photovoltaic frame according to claim 1, characterized in that: The wavy structure includes protrusions and grooves that are alternately arranged, and the height of the protrusions gradually increases along the direction away from the side glue overflow groove, and / or the depth of the grooves gradually increases.

3. The anti-fouling photovoltaic frame according to claim 1, characterized in that: The side glue overflow groove includes a vertical end surface along the side direction of the laminate, the vertical end surface is used to fit with the side of the laminate, and the height of the vertical end surface along the side direction of the laminate is not greater than the thickness of the laminate.

4. The anti-fouling photovoltaic frame according to claim 3, characterized in that: The height of the vertical end surface is not greater than 4 mm.

5. The anti-fouling photovoltaic frame according to claim 3, characterized in that: The side overflow glue groove comprises a first buffer slope which is arranged obliquely, wherein the upper end of the first buffer slope is connected to the vertical end surface, and the lower end of the first buffer slope is inclined toward the side overflow glue groove; The length of the first buffer slope along the bottom surface of the laminate is no more than 2 mm.

6. The anti-fouling photovoltaic frame according to claim 5, characterized in that: The side glue overflow groove includes a second buffer slope arranged opposite to the first buffer slope, and a glue storage groove is formed between the first buffer slope and the second buffer slope.

7. The anti-fouling photovoltaic frame according to claim 6, characterized in that: The second buffer slope is inclined, the lower end of the second buffer slope is connected to the bottom support plate, and the upper end of the second buffer slope is inclined in a direction away from the side overflow glue groove; The height of the second buffer slope along the side direction of the laminate is not greater than 3 mm.

8. The anti-fouling photovoltaic frame according to claim 1, characterized in that: The bottom support plate is tilted upward, with an inclination angle of no more than 5 degrees; and / or The lower surface of the bottom support plate is formed with convex ribs; and / or The upper surface of the bottom support member is formed with convex ribs.

9. A photovoltaic module, characterized in that: The photovoltaic assembly comprises a laminate and at least one anti-fouling photovoltaic frame according to any one of claims 1-8.

10. The photovoltaic module according to claim 9, characterized in that: The anti-fouling photovoltaic frame is a long frame or a short frame, and the anti-fouling photovoltaic frame is connected and fixed to other frames through angle keys.

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