Frame and photovoltaic module

Abstract

The utility model provides a frame and a photovoltaic module, and the photovoltaic module comprises a laminated part, the frame comprises a frame body, the frame body is provided with a supporting surface, the supporting surface is provided with a first projection, and the first projection is used for abutting against the bottom surface of the laminated part; the limiting part is arranged on the supporting surface and extends away from the frame body in the height direction; the frame body and the limiting part form a mounting area for mounting the laminated piece; the limiting part is provided with a limiting end, the limiting end is arranged far away from the frame body, the inner side of the limiting end is provided with an inner inclined surface, the inner inclined surface faces the mounting area, an acute angle is formed between the inner inclined surface and the supporting surface, and the inner inclined surface is used for abutting against a top surface transition bevel angle of the laminated piece. The technical problem that in the prior art, a laminated part is difficult to limit in the height direction through an A-face-free frame is solved.

Description

TECHNICAL FIELD

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

[0002] As a core component of photovoltaic power generation, the main role of the photovoltaic module is to receive light and convert light energy into electrical energy. The photovoltaic module includes a frame and a laminated piece. In order to avoid dust and water accumulation, the prior art designs the frame as no A surface (i.e. the top surface of the frame is removed) to eliminate the height difference between the frame and the laminated piece; however, in this structure, the no A surface frame is difficult to limit the laminated piece in the height direction, and during the installation process, the laminated piece is easy to protrude out of the frame or the laminated piece is too low below the frame, the former leads to the breakage of the laminated piece, and the latter cannot avoid the accumulation of water and dust. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a frame and a photovoltaic module, which aims to solve the technical problem that the no A surface frame in the prior art is difficult to limit the laminated piece in the height direction.

[0004] In a first aspect, the present application provides a frame for a photovoltaic module, the photovoltaic module including a laminated piece, comprising:

[0005] a frame body having a support surface, the support surface having a first protrusion formed thereon, the first protrusion being used to abut against a bottom surface of the laminated piece;

[0006] a limiting portion provided on the support surface and extending away from the frame body in the height direction; the frame body and the limiting portion form an installation area for installing the laminated piece; the limiting portion has a limiting end, the limiting end is provided away from the frame body, and an inner inclined surface is provided on the inner side of the limiting end, the inner inclined surface is provided towards the installation area and at an acute angle with the support surface, and the inner inclined surface is used to abut against a transition inclined angle of a top surface of the laminated piece.

[0007] Optionally, the first protrusion has a first end and a second end; the first end is an end close to the limiting portion, and the second end is an end away from the limiting portion; the first end is provided higher than the second end.

[0008] Optionally, the first protrusion has a slope surface extending from the second end to the first end, and the included angle between the slope surface and the support surface is less than or equal to 45°.

[0009] Optionally, the spacing between the first end and the support surface is at least 0.1 mm.

[0010] Optionally, the included angle between the inner inclined surface and the support surface is 3-60°.

[0011] Optionally, the inner inclined surface has a proximal end close to the support surface and a distal end away from the support surface, and a height between the proximal end and the distal end is at least 0.2 mm.

[0012] Optionally, the limiting portion has a second protrusion protruding towards the mounting area, the second protrusion is located between the limiting end and the frame body, and the second protrusion is used for abutting against a side surface of the laminated piece.

[0013] Optionally, the second protrusion has an upper edge close to the limiting end and a lower edge close to the limiting end, an upper edge extending to the lower edge is an abutting surface of the second protrusion, and the abutting surface abuts against the side surface of the laminated piece.

[0014] The first distance between the upper edge and the outer side surface of the frame body is not less than the second distance between the lower edge and the outer side surface of the frame body, and an included angle between the abutting surface and the height direction is 0-45°.

[0015] Optionally, the limiting portion has a connecting segment and a curved segment, the connecting segment is connected with the frame body, the curved segment is connected with one end of the connecting segment away from the frame body, and the limiting end is arranged at one end of the curved segment away from the connecting segment; and the second protrusion is arranged on the curved segment.

[0016] A cross-sectional thickness of one end of the connecting segment close to the second protrusion is not greater than 1 mm, and a cross-sectional thickness of one end of the connecting segment close to the frame body is not greater than 1.5 mm.

[0017] In a second aspect, the present application further provides a photovoltaic module, comprising:

[0018] a laminated piece, the laminated piece comprising a top surface, a side surface and a bottom surface arranged oppositely; a top surface transition inclined angle is formed between the top surface and the side surface; and

[0019] a frame as described above, the first protrusion abuts against the bottom surface, and the inner inclined surface abuts against the top surface transition inclined angle.

[0020] In the technical scheme of the embodiment of the present application, the limiting part is arranged on the supporting surface and extends away from the frame body in the height direction, and the frame body and the limiting part form an installation area for installing the laminated component; the limiting part is provided with a limiting end away from the frame body, and an inner inclined surface of the limiting end is arranged towards the installation area and is arranged at an acute angle with the supporting surface; when the laminated component is installed on the frame, the first protrusion abuts against the ground of the laminated component to push the laminated component upwards, so that the laminated component is prevented from being too low below the frame; the inner inclined surface abuts against a top surface transition inclined angle of the laminated component to press the laminated component downwards, so that the laminated component is prevented from protruding from the frame; therefore, the frame provided in the embodiment of the present application performs bidirectional limiting on the laminated component in the height direction, and the laminated component is prevented from being too low below the frame or protruding from the frame during the frame installation process. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor.

[0022] Figure 1 A structural schematic diagram of a photovoltaic module provided in the embodiment of the present application;

[0023] Figure 2 A sectional schematic diagram of a frame provided in the embodiment of the present application;

[0024] Figure 3 An assembly process schematic diagram of the frame and the laminated component provided in the embodiment of the present application;

[0025] Figure 4 Stress of the frame and the laminated component after assembly provided in the embodiment of the present application;

[0026] Figure 5 A partial detail drawing I in the sectional schematic diagram of the frame provided in the embodiment of the present application;

[0027] Figure 6 A partial detail drawing II in the sectional schematic diagram of the frame provided in the embodiment of the present application;

[0028] Figure 7 A partial detail drawing III in the sectional schematic diagram of the frame provided in the embodiment of the present application;

[0029] Figure 8 A partial detail drawing IV in the sectional schematic diagram of the frame provided in the embodiment of the present application.

[0030] LIST OF DRAWINGS

[0031]

[0032] DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0034] It should be noted that all directionality indications (such as up, down, left, right, front, back, and the like) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0035] In the present application, unless specifically defined and limited otherwise, the terms “connection”, “fixation” and the like should be understood in a broad sense, for example, “fixation” can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise specifically limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In addition, if the present application has a description of “first”, “second” and the like, the description of “first”, “second” and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text includes three parallel schemes. For example, “A and / or B” includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope claimed by the present application.

[0037] As the core component of photovoltaic power generation, the main role of the photovoltaic module is to receive light and convert light energy into electrical energy. The core module that receives light energy is the cell sheet. Under the condition of the same light energy conversion rate, the more light energy received, the more power generated. In the existing photovoltaic module packaging structure, light needs to pass through glass and adhesive film to reach the cell sheet. When dust, water stains and other foreign matters appear on the surface of the glass, additional scattering and refraction phenomena will occur in the light propagation, causing light loss, reducing the amount of light from the glass surface to the cell sheet surface, and reducing the power generation of the photovoltaic module.

[0038] In sunny weather, a thin layer of dust will usually accumulate on the surface of the photovoltaic panel. These dusts are evenly distributed and have little effect on the penetration of sunlight, so they have little effect on the power generation efficiency. When it rains, it not only cannot remove all the dust, but also may cause the dust to deposit at the water accumulation due to the small height difference between the edge of the photovoltaic panel and the glass. As the rain evaporates, these deposited dusts form irregular dust lines under the action of surface tension. This phenomenon is called "beach effect". This effect can cause opaque dust bands on the surface of the photovoltaic panel, which can significantly block light and increase internal resistance, thereby reducing the output power of the photovoltaic panel. In extreme cases, this shielding may also trigger the bypass diode protection mechanism, further reducing the overall power generation efficiency of the string.

[0039] Therefore, the prior art provides a no-A-face frame to eliminate the height difference between the frame and the module panel, thereby avoiding water accumulation during precipitation. However, the no-A-face frame in the prior art only removes the A-face, and lacks a limiting structure in the height direction of the laminated member and the frame. After framing, the vertical height difference between the laminated member and the no-A-face frame is uncontrollable:

[0040] ①The glass front plate of the laminated member is higher than the frame, so the frame cannot effectively protect the laminated member from being damaged during transportation and installation.

[0041] ②If the glass front plate of the laminated member is too low compared to the frame, the frame will still accumulate water, which cannot effectively prevent the formation of dust bands.

[0042] Therefore, the embodiment of the present application provides a frame 100 which, after installation with a laminated member 200, can position the laminated member 200 in both directions in the height direction, avoid the laminated member 200 protruding from the frame 100, and also avoid the laminated member 200 being too low compared to the frame 100, to solve the technical problem that the no-A-face frame 100 cannot limit the laminated member 200 in the height direction.

[0043] In a specific photovoltaic module, such as Figure 1As shown, the photovoltaic module includes a frame 100, a laminate 200, and a long frame 300. Two frames 100 are provided, and two long frames 300 are provided. The frame 100 and the long frame 300 are connected through a corner code. The laminate 200 is arranged in a square area of a combined frame formed by the frame 100 and the long frame 300. Figure 1 In the structure shown, the frame 100 is a short frame of the combined frame. Of course, in some embodiments, the structure of the long frame 300 can also adopt the structure of the frame 100.

[0044] As shown, Figure 1 As shown, the frame 100 for the photovoltaic module includes a laminate 200. As shown, Figure 2 The frame 100 includes:

[0045] A frame body 110 has a support surface 111, and a first protrusion 112 is formed on the support surface 111. The first protrusion 112 is used to abut against a bottom surface 210 of the laminate 200.

[0046] A limiting portion 120 is arranged on the support surface 111 and extends away from the frame body 110 in the height direction. The frame body 110 and the limiting portion 120 form a mounting area S for mounting the laminate 200. The limiting portion 120 has a limiting end 121 arranged away from the frame body 110. An inner inclined surface 121a of the limiting end 121 is arranged towards the mounting area S and forms an acute angle a with the support surface 111. The inner inclined surface 121a is used to abut against a top surface transition inclined angle 221 of the laminate 200.

[0047] In the technical scheme of the embodiment of the present application, the limiting portion 120 is arranged on the support surface 111 and extends away from the frame body 110 in the height direction. The frame body 110 and the limiting portion 120 form a mounting area S for mounting the laminate 200. The limiting portion 120 has a limiting end 121 arranged away from the frame body 110. An inner inclined surface 121a of the limiting end 121 is arranged towards the mounting area S and forms an acute angle a with the support surface 111. When the laminate 200 is mounted on the frame 100, the first protrusion 112 abuts against the ground of the laminate 200 to push the laminate 200 upwards, so as to avoid that the laminate 200 is too low below the frame 100. The inner inclined surface 121a abuts against the top surface transition inclined angle 221 of the laminate 200 to press the laminate 200 downwards, so as to avoid that the laminate 200 protrudes from the frame 100. Therefore, the frame 100 provided in the embodiment of the present application limits the laminate 200 in the height direction in two directions, so as to avoid that the laminate 200 is too low below the frame 100 or protrudes from the frame 100 during the frame mounting process.

[0048] In the embodiment, asFigure 3 As shown, in the process of frame fitting, the inner inclined surface 121a of the frame 100 can play a limiting and restraining role in the height direction to the transition inclined surface 221 (cut corner surface) of the top surface of the front plate glass of the laminated piece 200, and can guide the laminated piece 200 to slide into the interior in the process of horizontal pushing, and further control the height deviation between the top surface 220 of the laminated piece 200 and the top surface of the frame 100, so that the laminated piece 200 is lower than the frame 100; in the embodiment, in combination with Figure 3 and Figure 4 As shown, in the process of frame fitting, the first protrusion 112 can avoid the laminated piece 200 from being guided to be too low by the inner inclined surface 121a, and further avoid the laminated piece 200 from being too low than the frame 100. As shown Figure 4 As shown, the inner inclined surface 121a can form a plane-to-plane contact with the cut corner surface of the front plate glass of the laminated piece 200, and avoid stress concentration caused by the contact between the sharp corner and the plane to damage the front plate glass.

[0049] In the embodiment, the limiting portion 120 corresponds to the B surface of the frame 100, and the supporting surface 111 of the frame body 110 corresponds to the C surface of the frame 100; the first protrusion 112 is arranged at the region of the supporting surface 111 close to the limiting portion 120, such as the glue groove.

[0050] As an optional implementation manner of the above embodiment, as shown Figure 6 As shown, the first protrusion 112 has a first end 1121 and a second end 1122; the first end 1121 is an end close to the limiting portion 120, and the second end 1122 is an end away from the limiting portion 120; the first end 1121 is arranged higher than the second end 1122; the first protrusion 112 has a slope surface 112a extending from the second end 1122 to the first end 1121. In the embodiment, the slope surface is arranged to facilitate the laminated piece 200 to be gradually lifted up by the first protrusion 112 in the process of frame fitting, and gradually abut against the transition inclined surface of the laminated piece 200 and the inner inclined surface 121a, and further facilitate the laminated piece 200 to be gradually positioned in the height direction, and further facilitate the laminated piece 200 to be smoothly fitted in the frame fitting process.

[0051] As an optional implementation manner of the above embodiment, as shown Figure 6 As shown, the included angle β between the slope surface 112a and the supporting surface 111 is less than or equal to 45°. In the embodiment, the included angle β can be set to 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, or 45°.

[0052] In another embodiment, the included angle can also be other angles, such as an acute angle greater than 45°, which can also be set according to specific working conditions.

[0053] As an optional implementation manner of the above embodiment, as shownFigure 6 As shown, the distance H2 between the first end 1121 and the support surface 111 is at least 0.1 mm. That is, in the embodiment, the first end 1121 can push the laminate 200 upward by at least 0.1 mm, such as 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm or 0.2 mm.

[0054] As an optional implementation of the above embodiments, such as Figure 5 As shown, the included angle α between the inner inclined surface 121a and the supporting surface 111 is 3°-60°. In this embodiment, the inner inclined surface 121a mainly guides the top surface of the laminate 200 to gradually abut against it, applying downward pressure to the laminate 200 so that the laminate 200 is lower than the frame 100. In this embodiment, the included angle α can be 5°, 15°, 25°, 35°, 45°, or 55°.

[0055] In the embodiments, the included angles α and β can be specifically set according to the specific working conditions.

[0056] As an optional implementation of the above embodiments, such as Figure 5 As shown, the inner inclined surface 121a has a proximal end 1211 near the support surface 111 and a distal end 1212 away from the support surface 111, and the height H1 between the proximal end 1211 and the distal end 1212 is at least 0.2 mm. That is, in the embodiment, the height difference between the proximal end 1211 and the distal end 1212 is 0.2 mm or more, so that the inner inclined surface 121a can guide the top surface transition angle 221 for assembly during frame assembly, so that the laminate 200 is assembled in place and has sufficient area to contact the top surface transition angle, thereby improving the stability after assembly and reducing stress concentration.

[0057] As an optional implementation of the above embodiments, Figure 2 As shown, the limiting portion 120 has a second protrusion 122 protruding towards the mounting area S. The second protrusion 122 is located between the limiting end 121 and the frame 110, and the second protrusion 122 is used to abut against the side surface 230 of the laminate 200. In the embodiment, the second protrusion 122 can limit the laminate 200 in the horizontal direction, and can prevent the height of the frame 100 from exceeding the top surface 220 of the laminate 200 when the laminate 200 is excessively guided inward by the inner inclined surface 121a, thereby preventing water accumulation.

[0058] As an optional implementation of the above embodiments, Figure 7As shown, the second protrusion 122 has an upper edge 1221 close to the limiting end 121 and a lower edge 1222 close to the limiting end 121, and a surface extending from the upper edge 1221 to the lower edge 1222 is an abutting surface 122a of the second protrusion 122, which abuts against the side surface 230 of the laminated piece 200; wherein a first distance W1 between the upper edge 1221 and the outer side surface 230 of the frame 100 is not less than a second distance W2 between the lower edge 1222 and the outer side surface 230 of the frame 100, and an included angle γ between the abutting surface 122a and the height direction is 0°-45°. In the process of contacting the laminated piece 200, the frame 100 may be deformed, and the second protrusion 122 can eliminate the included angle between the surfaces caused by the deformation. In addition, the laminated piece 200 itself may have a glue edge due to overflow of the middle glue film in the laminating process, and even if the edge is trimmed in the production process, there may still be residual glue on the middle protrusion. The abutting surface 122a can adapt to the shape of the residual glue, thereby ensuring the surface contact between the laminated piece 200 and the frame 100 and the smooth flow of the overflow glue during the frame assembly process. Moreover, the second protrusion 122 can also ensure the smooth flow of the silicon glue during the frame assembly process.

[0059] As an optional implementation of the above embodiment, in combination with Figure 2 and Figure 8 As shown, the limiting portion 120 has a connecting segment 123 and a curved segment 124, the connecting segment 123 is connected with the frame body 110, the curved segment 124 is connected with one end of the connecting segment 123 away from the frame body 110, and the limiting end 121 is arranged at one end of the curved segment 124 away from the connecting segment 123; the second protrusion 122 is arranged on the curved segment 124; a cross-sectional thickness W3 of one end of the connecting segment 123 close to the second protrusion 122 is not greater than 1 mm, and a cross-sectional thickness W4 of one end of the connecting segment 123 close to the frame body 110 is not greater than 1.5 mm. In order to avoid the hard constraint and contact of the first protrusion 112 and the inner inclined surface 121a on the laminated piece 200 during the frame assembly process, the cross-sectional thickness of one end of the connecting segment 123 close to the second protrusion 122 is not greater than 1 mm, and the cross-sectional thickness of one end of the connecting segment 123 close to the frame body 110 is not greater than 1.5 mm, which can reduce the rigidity of the limiting portion 120 away from the frame body 110, thereby releasing the contact stress through the deformation of the frame 100, and maximizing the possibility of avoiding damage caused by the hard constraint between the frame 100 and the laminated piece 200 during the frame assembly process.

[0060] As Figure 1As shown, the embodiments of the present application also propose a photovoltaic module, which comprises a laminate 200 and a frame 100. The laminate 200 comprises a top surface 220, a side surface 230 and a bottom surface 210 arranged oppositely, and a top surface transition bevel 221 is formed between the top surface 220 and the side surface 230. The frame 100 adopts the technical solutions of the aforementioned partial embodiments or all the embodiments. The first protrusion 112 abuts against the bottom surface 210, and the inner bevel 121a abuts against the top surface transition bevel 221.

[0061] In embodiments, the photovoltaic module further comprises a long frame 300, and the long frame 300 and the frame 100 are connected through an angle code. On the angle code connecting the long frame 300 and the frame 100, a cutting groove is made on the inner side of the long frame 100 in the axial direction, so that the frame 100 can be further moved inward to reduce the gap between the frame 100 and the laminate 200 due to the tolerance fit, and the frame 100 and the laminate 200 are more easily self-adapted.

[0062] The above description is only optional embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the application concept of the present application and the content of the specification and drawings are included in the patent protection scope of the present application.

Claims

1. A border for a photovoltaic module, the photovoltaic module comprising a laminate, characterized in that, The frame has a supporting surface with a first protrusion formed thereon for abutting against a bottom surface of the laminated piece. The limiting portion is provided on the supporting surface and extends away from the frame in the height direction; the frame and the limiting portion form a mounting area for mounting the laminated piece; the limiting portion has a limiting end provided away from the frame, and an inner inclined surface on the inner side of the limiting end is provided at an acute angle with respect to the supporting surface towards the mounting area and is used for abutting against a top surface transition bevel of the laminated piece. The first protrusion has a first end and a second end; the first end is an end close to the limiting portion, and the second end is an end away from the limiting portion; the first end is higher than the second end; the first protrusion has a slope surface extending from the second end to the first end.

2. The bezel of claim 1, wherein The angle between the slope surface and the supporting surface is less than or equal to 45°.

3. The bezel of claim 2, wherein The distance between the first end and the supporting surface is at least 0.1 mm.

4. The bezel of claim 2, wherein The angle between the inner inclined surface and the supporting surface is 3-60°.

5. The bezel of claim 1, wherein The inner inclined surface has a proximal end close to the supporting surface and a distal end away from the supporting surface, and the height between the proximal end and the distal end is at least 0.2 mm.

6. The bezel of claim 1, wherein The limiting portion has a second protrusion protruding towards the mounting area, the second protrusion is located between the limiting end and the frame, and the second protrusion is used for abutting against a side surface of the laminated piece.

7. The bezel of claim 1, wherein The second protrusion has an upper edge close to the limiting end and a lower edge close to the limiting end, and the surface of the second protrusion extending from the upper edge to the lower edge is an abutting surface of the second protrusion for abutting against the side surface of the laminated piece.

8. The bezel of claim 7, wherein, The first distance between the upper edge and the outer side surface of the frame is not less than the second distance between the lower edge and the outer side surface of the frame, and the angle between the abutting surface and the height direction is 0-45°. The limiting portion has a connecting segment connected to the frame and a curved segment connected to an end of the connecting segment away from the frame, and the limiting end is provided at an end of the curved segment away from the connecting segment; the second protrusion is provided on the curved segment.

9. The bezel of claim 7, wherein The cross-sectional thickness of an end of the connecting segment close to the second protrusion is not greater than 1 mm, and the cross-sectional thickness of an end of the connecting segment close to the frame is not greater than 1.5 mm. The laminated piece includes a top surface, a side surface and a bottom surface arranged opposite to each other; a top surface transition bevel is formed between the top surface and the side surface.

10. A photovoltaic module, characterized by, The frame of any one of claims 1-9, the first protrusion abuts against the bottom surface, and the inner inclined surface abuts against the top surface transition bevel. ​ ​ ​

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