Photovoltaic frame structure and photovoltaic module

Abstract

The utility model discloses a photovoltaic frame structure and a photovoltaic assembly, the photovoltaic frame structure is used for installing a laminated piece and comprises a supporting part and a side edge supporting surface, the supporting surface is formed on the upper surface of the supporting part, the laminated piece is suitable for being supported on the supporting surface, and a side edge limiting part is arranged on the outer side of the supporting part and extends upwards relative to the supporting part. The side edge limiting part is located on the peripheral side of the laminated piece, and the end, away from the supporting part, of the side edge limiting part is not higher than the light receiving face of the laminated piece. According to the photovoltaic frame structure provided by the utility model, one end, deviating from the supporting part, of the side edge limiting part is not higher than the light receiving surface of the laminated piece, so that dust, rainwater and the like falling on the light receiving surface of the laminated piece can be prevented from being blocked by the side edge limiting part, and the dust on the light receiving surface of the laminated piece can be smoothly washed away by the rainwater; dust or rainwater is prevented from being accumulated on the laminated piece, and the cleanliness of the laminated piece is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and in particular to a photovoltaic frame structure and a photovoltaic module. Background Technology

[0002] With the rapid development of the photovoltaic industry, the production and application of photovoltaic modules are becoming increasingly widespread. Photovoltaic modules typically consist of laminates and a frame structure for mounting the laminates, with the laminates and frame usually connected by adhesive. However, during the adhesive application process, the inability to guarantee the correct application location leads to uneven adhesive distribution. Furthermore, the height difference between the laminates and the frame easily causes dust and rainwater to accumulate at the angle between the laminates and the frame, affecting the cleanliness of the laminates. Therefore, improvements are needed. Utility Model Content

[0003] The first aspect of this utility model proposes a photovoltaic frame structure, which has the advantage of improving the cleanliness of laminated components.

[0004] According to a first aspect of the present invention, a photovoltaic frame structure includes: a support portion, wherein a support surface is formed on the upper surface of the support portion, and the laminate is adapted to be supported on the support surface; and a side limiting portion, which is disposed on the outside of the support portion and extends upward relative to the support portion, the side limiting portion being located on the outer periphery of the laminate, and the end of the side limiting portion away from the support portion is not higher than the light-receiving surface of the laminate.

[0005] According to the photovoltaic frame structure of the first aspect of the present invention, the end of the side limiting part away from the support part is not higher than the light-receiving surface of the laminate. This can prevent the side limiting part from blocking dust, rainwater, etc. falling on the light-receiving surface of the laminate, so that rainwater can smoothly wash away the dust on the light-receiving surface of the laminate, thereby avoiding the accumulation of dust or rainwater on the laminate and ensuring the cleanliness of the laminate.

[0006] According to some embodiments of the present invention, a back overflow groove extending along a first direction is formed on the support surface, the first direction being parallel to the thickness direction of the laminate, and the side limiting portion and the support portion together define a side overflow groove extending along the first direction and open toward the laminate.

[0007] According to some embodiments of this utility model, the depth of both the back overflow groove and the side overflow groove is not less than 0.5 mm.

[0008] According to some embodiments of the present invention, a plurality of back overflow grooves are formed on the support surface at intervals along the second direction. The second direction is perpendicular to the first direction and parallel to the thickness direction of the laminate. The plurality of back overflow grooves include at least a first overflow groove and a second overflow groove. The second overflow groove is located on the side of the first overflow groove away from the side limiting portion. In the second direction, the width of the first overflow groove is greater than the width of the second overflow groove.

[0009] According to some embodiments of the present invention, the second overflow groove has a plurality of grooves spaced apart along a second direction, a first protrusion is defined between the first overflow groove and an adjacent second overflow groove, and a second protrusion is defined between any two adjacent second overflow grooves. In the second direction, the width of the first protrusion is greater than the width of the second protrusion.

[0010] The second aspect of this utility model proposes a photovoltaic frame structure.

[0011] According to a second aspect embodiment of the present invention, a photovoltaic frame structure includes: a support portion, wherein a support surface is formed on the upper surface of the support portion, the laminate is adapted to be supported on the support surface, and a back overflow groove is formed on the support surface; and an adhesive applicator, disposed on the inner side of the support portion, wherein an adhesive applicator plane is formed on the upper surface of the adhesive applicator.

[0012] According to the photovoltaic frame structure of the second aspect of this utility model, by providing an adhesive application surface, the adhesive on the application surface can be prevented from flowing when not subjected to other external forces, thereby ensuring uniform distribution of the adhesive and improving the bonding strength between the laminate and the photovoltaic frame structure. Furthermore, the adhesive application area can support the backlight surface of the laminate, thus increasing the support stability of the photovoltaic frame structure on the backlight surface of the laminate based on the supporting surface.

[0013] According to some embodiments of the present invention, in the second direction, the width of the glue application plane is greater than the width of the back glue overflow groove.

[0014] According to some embodiments of this utility model, in the vertical direction, the distance between the glue application plane and the inner bottom wall of the back glue overflow groove is greater than the depth of the back glue overflow groove.

[0015] According to some embodiments of the present invention, the glue applicator has an overflow slope on the side facing the laminate. The overflow slope is connected to the side of the glue applicator plane away from the back overflow groove. In the direction away from the glue applicator plane, the overflow slope extends obliquely away from the laminate.

[0016] The third aspect of this utility model proposes a photovoltaic module.

[0017] A photovoltaic module according to a third aspect of the present invention includes: the aforementioned photovoltaic frame structure; and a laminate, wherein the laminate is mounted on the photovoltaic frame structure.

[0018] According to the photovoltaic module of the third aspect of the present invention, the end of the side limiting part away from the support part is not higher than the light-receiving surface of the laminate. This can prevent the side limiting part from blocking dust, rainwater, etc. falling on the light-receiving surface of the laminate, so that rainwater can smoothly wash away the dust on the light-receiving surface of the laminate, thereby avoiding the accumulation of dust or rainwater on the laminate and ensuring the cleanliness of the laminate.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a partial schematic diagram of the photovoltaic frame structure according to an embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional view of the photovoltaic frame structure and the laminate being bonded according to an embodiment of the present invention.

[0022] Figure label:

[0023] 100. Photovoltaic frame structure;

[0024] 1. Support part; 11. Support surface; 12. First overflow groove; 13. Second overflow groove; 14. First protrusion; 15. Second protrusion; 16. Support plate; 17. First side plate; 18. Second side plate; 19. Base plate;

[0025] 2. Side limiting part; 21. Side overflow groove; 22. Side plate; 23. Side protrusion;

[0026] 3. Glue application area; 31. Glue application surface; 32. Glue overflow slope;

[0027] 200, laminate; 210, backlight side; 220, light-receiving side; 300, adhesive;

[0028] e1, first direction; e2, second direction. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0031] The photovoltaic frame structure 100 according to a first aspect embodiment of the present invention is described below with reference to the accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, the photovoltaic frame structure 100 according to the first aspect embodiment of the present invention includes a support part 1 and a side limiting part 2. The upper surface of the support part 1 is formed with a support surface 11. The laminate 200 is adapted to be supported on the support surface 11. That is, after the laminate 200 is installed on the photovoltaic frame structure 100, the support part 1 supports the backlight surface 210 of the laminate 200 upward through the support surface 11. Here, the backlight surface 210 of the laminate 200 refers to the side of the laminate 200 that receives sunlight, that is, the back side of the light-receiving surface 220.

[0033] The side limiting part 2 is located on the outer side of the support part 1 and extends upward relative to the support part 1. The side limiting part 2 is located on the outer periphery of the laminate 200, and the end of the side limiting part 2 facing away from the support part 1 is not higher than the light-receiving surface 220 of the laminate 200. That is, the upper end of the side limiting part 2 is flush with the light-receiving surface 220 of the laminate 200, or the upper end of the side limiting part 2 is lower than the light-receiving surface 220 of the laminate 200. In the description of this utility model, the inner side and the outer side refer to the inner and outer spaces relative to the frame-shaped area defined by the photovoltaic frame structure 100. The outer side of the support part 1 refers to the side of the support part 1 facing the external space of the photovoltaic frame structure 100.

[0034] Therefore, by limiting the degree of freedom of movement of the laminate 200 in the first and second directions, the side limiting part 2 can prevent dust, rainwater, etc. from falling on the light-receiving surface 220 of the laminate 200, so that rainwater can smoothly wash away the dust on the light-receiving surface 220 of the laminate 200, thereby preventing dust or rainwater from accumulating on the laminate 200 and ensuring the cleanliness of the laminate 200.

[0035] According to the photovoltaic frame structure 100 of the first aspect of the present invention, the end of the side limiting part 2 that is away from the support part 1 is not higher than the light-receiving surface 220 of the laminate 200. This can prevent the side limiting part 2 from blocking dust, rainwater, etc. falling on the light-receiving surface 220 of the laminate 200, so that rainwater can smoothly wash away the dust on the light-receiving surface 220 of the laminate 200, thereby preventing dust or rainwater from accumulating on the laminate 200 and ensuring the cleanliness of the laminate 200.

[0036] According to some embodiments of the present invention, a back overflow groove extending along a first direction e1 is formed on the support surface 11. The first direction e1 is parallel to the thickness direction of the laminate 200. The side limiting part 2 and the support part 1 together define an open side overflow groove 21 extending along the first direction e1 and facing the laminate 200.

[0037] It is understood that both the back overflow groove and the side overflow groove 21 can hold a certain amount of glue 300. During the process of installing the laminate 200 onto the photovoltaic frame structure 100, the glue 300 located between the laminate 200 and the photovoltaic frame structure 100 is squeezed between the laminate 200 and the support surface 11. Part of it flows towards the side limiting part 2, flows through the gap between the back overflow groove and the side overflow groove 21 and the laminate 200, and flows towards the light-receiving surface 220 of the laminate 200. The other part flows away from the side limiting part 2.

[0038] By providing a back overflow groove and a side overflow groove 21, the adhesive 300 between the laminate 200 and the support 1 can provide sufficient buffer space for the adhesive 300 as it flows toward the light-receiving surface 220 of the laminate 200. This can prevent the adhesive 300 between the laminate 200 and the photovoltaic frame structure 100 from overflowing onto the light-receiving surface 220 of the laminate 200, thus avoiding adhesive overflow defects. Furthermore, it can effectively increase the amount of adhesive 300 between the laminate 200 and the photovoltaic frame structure 100 to improve the connection strength between the laminate 200 and the photovoltaic frame structure 100.

[0039] In a specific example, the support portion 1 includes a support plate 16, a first side plate 17, a second side plate 18, and a bottom plate 19. The support plate 16 is used to support the backlight surface 210 of the laminate 200. The support plate 16 and the bottom plate 19 are arranged at intervals along the vertical direction and are both perpendicular to the vertical direction. The first side plate 17 and the second side plate 18 are arranged at intervals along the second direction e2 and are both perpendicular to the second direction e2. The two ends of the support plate 16 in the second direction e2 are respectively connected to one end of the first side plate 17 and one end of the second side plate 18. One end of the bottom plate 19 in the second direction e2 is connected to the end of the first side plate 17 away from the support plate 16, and the other end extends to the side of the second side plate 18 that protrudes from the first side plate 17 and is connected to the end of the second side plate 18 away from the support plate 16. The side limiting portion 2 is formed by the first side plate 17 extending in a direction away from the bottom plate 19.

[0040] According to some embodiments of the present invention, the side limiting part 2 includes a side plate 22 disposed on the support part 1 and a side protrusion 23 disposed on the side plate 22. The side plate 22 extends along the thickness direction of the laminate 200, and the side protrusion 23 is located at one end of the side plate 22 away from the support part 1 and on the side of the side plate 22 facing the laminate 200. The side plate 22, the side protrusion 23 and the support part 1 together define the side overflow groove 21.

[0041] In other words, the side protrusions 23 and the support portion 1 are arranged at intervals along the thickness direction of the laminate 200. The side protrusions 23 facing the support portion 1, the side of the side plate 22 where the side protrusions 23 are located, and the side of the support surface 11 facing the side protrusions 23 together define the side overflow groove 21. After the laminate 200 is installed onto the photovoltaic frame structure 100, the side plate 22 and the side protrusions 23 are both located on the outer periphery of the laminate 200, and the support portion 1 is located on the backlight surface 210 side of the laminate 200. In addition, as the adhesive 300 between the laminate 200 and the photovoltaic frame structure 100 flows toward the light-receiving surface 220 of the laminate 200, it will preferentially fill the gap between the laminate 200 and the side plate 22 and the side protrusion 23, thereby providing sufficient buffer space for the adhesive 300 to avoid the adhesive 300 overflowing onto the side protrusion 23 away from the side plate 22 and causing adhesive overflow defects.

[0042] According to some embodiments of this utility model, the depth of both the back overflow groove and the side overflow groove 21 is not less than 0.5 mm. That is, the depth of the back overflow groove and the side overflow groove 21 is controlled within a range greater than or equal to 0.5 mm. For example, the depth of the back overflow groove and the side overflow groove 21 can be 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.9 mm, 1 mm, etc., without specific limitations. It can be understood that the depth of the back overflow groove and the side overflow groove 21 is positively correlated with the amount of glue 300 that it can hold. Therefore, by controlling the depth of the back overflow groove and the side overflow groove 21 to a range greater than or equal to 0.5mm, it is possible to avoid the back overflow groove and the side overflow groove 21 being too shallow, which would affect the amount of glue 300 that can be contained. This ensures that the back overflow groove and the side overflow groove 21 can provide sufficient buffer space for glue to be contained, so as to avoid excess glue 300 overflowing onto the light-receiving surface 220 of the laminate 200 and causing glue overflow defects.

[0043] According to some embodiments of this utility model, a plurality of back overflow grooves are formed on the support surface 11 at intervals along a second direction e2. The second direction e2 is perpendicular to the first direction e1 and parallel to the thickness direction of the laminate 200. The plurality of back overflow grooves include at least a first overflow groove 12 and a second overflow groove 13. The second overflow groove 13 is located on the side of the first overflow groove 12 away from the side limiting portion 2. In the second direction e2, the width of the first overflow groove 12 is greater than the width of the second overflow groove 13.

[0044] During the flow of adhesive 300 toward the light-receiving surface 220 of the laminate 200, it can sequentially enter multiple back overflow grooves arranged along the second direction e2, thereby enhancing the adhesive buffering capacity on the support surface 11 and further avoiding the risk of adhesive overflow defects. Furthermore, the first overflow groove 12 is located between the second overflow groove 13 and the side overflow groove 21. That is, adhesive 300 flowing through the second overflow groove 13 flows through the first overflow groove 12 and then into the side overflow groove 21. The first overflow groove 12 has a larger width than the second overflow groove 13, thus accommodating more adhesive 300 and reducing the amount of adhesive 300 entering the side overflow groove 21, preventing excessive adhesive overflow. In other words, by setting multiple overflow grooves of different widths, the flow and distribution of adhesive 300 can be effectively controlled, ensuring uniform distribution of adhesive 300 within the photovoltaic frame structure 100. This design avoids the problem of glue 300 accumulating or overflowing, thereby improving the overall quality and stability of photovoltaic modules.

[0045] According to some embodiments of this utility model, the second overflow groove 13 has a plurality of grooves spaced apart along the second direction e2. A first protrusion 14 is defined between the first overflow groove 12 and an adjacent second overflow groove 13, and a second protrusion 15 is defined between any two adjacent second overflow grooves 13. In the second direction e2, the width of the first protrusion 14 is greater than the width of the second protrusion 15. That is, the first protrusion 14 has higher resistance to deformation than the second protrusion 15, and also provides a larger support area for the laminate 200. Since the first protrusion 14 is located on one side of the first overflow groove 12, the first overflow groove 12 has a larger width than the second overflow groove 13. Therefore, by providing a wider first protrusion 14, the first protrusion 14 can better compensate for the insufficient support strength of the first overflow groove 12 area for the laminate 200.

[0046] The photovoltaic frame structure 100 according to a second aspect embodiment of the present invention is described below with reference to the accompanying drawings.

[0047] like Figure 1 and Figure 2 As shown, the photovoltaic frame structure 100 according to a second aspect embodiment of the present invention includes: a support part 1 and an adhesive applicator 3. A support surface 11 is formed on the upper surface of the support part 1. The laminate 200 is adapted to support the support surface 11. A back overflow groove is formed on the support surface 11. The adhesive applicator 3 is located inside the support part 1, and an adhesive applicator plane 31 is formed on the upper surface of the adhesive applicator 3. The adhesive applicator plane 31 is the adhesive applicator position on the photovoltaic frame structure 100. That is, before installing the laminate 200 onto the photovoltaic frame structure 100, adhesive 300 is first applied onto the adhesive applicator plane 31, and then the adhesive 300 is pushed towards the back overflow groove by the pressing action of the laminate 200. Therefore, by setting the adhesive application point on the photovoltaic frame structure 100 to a plane, the position of the adhesive 300 can be better maintained. That is, the adhesive 300 on the adhesive application plane 31 can be prevented from flowing when no other external force is applied, thereby ensuring the uniform distribution of the adhesive 300 and improving the adhesive strength between the laminate 200 and the photovoltaic frame structure 100. In addition, the adhesive application part 3 can also support the backlight surface 210 of the laminate 200, thereby increasing the support stability of the photovoltaic frame structure 100 on the backlight surface 210 of the laminate 200 based on the support surface 11.

[0048] According to the photovoltaic frame structure of the second aspect embodiment of the present invention, by providing an adhesive application plane 31, the adhesive 300 on the adhesive application plane 31 can be prevented from flowing when not subjected to other external forces, thereby ensuring the uniform distribution of the adhesive 300 and improving the adhesive strength between the laminate 200 and the photovoltaic frame structure 100. In addition, the adhesive application part 3 can serve to support the backlight surface 210 of the laminate 200, thereby increasing the support stability of the photovoltaic frame structure 100 on the backlight surface 210 of the laminate 200 based on the support surface 11.

[0049] According to some embodiments of this utility model, the width of the adhesive application plane 31 is greater than the width of the back overflow groove. Here, width refers to the dimension in the second direction e2. The wider the adhesive application plane 31, the more adhesive 300 it can hold. Therefore, by setting the adhesive application plane 31 to a wider dimension, the amount of adhesive applied to the adhesive application plane 31 can be increased, thereby ensuring that the adhesive 300 on the adhesive application plane 31, as it flows towards the light-receiving surface 220 of the laminate 200, at least partially fills the back overflow groove, thus improving the adhesive strength between the laminate 200 and the photovoltaic frame structure 100.

[0050] According to some embodiments of this utility model, in the vertical direction, the distance between the adhesive application plane 31 and the inner bottom wall of the back overflow groove is greater than the depth of the back overflow groove. Here, the vertical direction refers to the thickness direction of the laminate 200, i.e., the depth direction of the back overflow groove. In other words, the distance between the adhesive application plane 31 and the laminate 200 is greater than the distance between the supporting surface 11 and the laminate 200; that is, the end of the adhesive application portion 3 near the laminate 200 is higher than the supporting surface 11, and the adhesive application plane 31 is higher than the second protrusion 15. Therefore, the portion of the adhesive application portion 3 that is higher than the supporting surface 11 can effectively prevent the glue 300 in the back overflow groove from flowing towards the adhesive application plane 31 on the side away from the back overflow groove. That is, the adhesive application portion 3 can effectively hold the glue 300 on the side of the adhesive application portion 3 facing the back overflow groove, thereby improving the adhesive strength between the laminate 200 and the photovoltaic frame structure 100.

[0051] According to some embodiments of the present invention, the glue applicator 3 has an overflow slope 32 formed on the side facing the laminate 200. The overflow slope 32 is connected to the side of the glue applicator plane 31 away from the back overflow groove. In the direction away from the glue applicator plane 31, the overflow slope 32 extends obliquely away from the laminate 200.

[0052] It is understandable that the adhesive 300 on the adhesive application surface 31, after being squeezed by the laminate 200, moves simultaneously towards the back overflow groove and the overflow slope 32. Therefore, by setting the overflow slope 32, a larger overflow space can be formed between the overflow slope 32 and the backlight surface 210 of the laminate 200, making the amount of adhesive flowing out through the connection between the adhesive application surface 31 and the overflow slope 32 more intuitive. Thus, by observing the amount of adhesive 300 in the overflow space, the amount of adhesive 300 in the back overflow groove and the side overflow groove 21 can be judged, ensuring the uniform distribution and bonding quality of the adhesive 300 between the laminate 200 and the photovoltaic frame structure 100.

[0053] A photovoltaic module according to a third aspect of the present invention is described below with reference to the accompanying drawings.

[0054] A photovoltaic module according to a third aspect of the present invention includes: a photovoltaic frame structure 100 and a laminate 200, wherein the laminate 200 is mounted on the photovoltaic frame structure 100.

[0055] According to the photovoltaic module of the third aspect embodiment of the present invention, the end of the side limiting part 2 away from the support part 1 is not higher than the light-receiving surface 220 of the laminate 200. This can prevent the side limiting part 2 from blocking dust, rainwater, etc. falling on the light-receiving surface 220 of the laminate 200, so that rainwater can smoothly wash away the dust on the light-receiving surface 220 of the laminate 200, thereby preventing dust or rainwater from accumulating on the laminate 200 and ensuring the cleanliness of the laminate 200.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A photovoltaic frame structure for mounting laminates, characterized in that, include: The support portion has a support surface formed on its upper surface, and the laminate is adapted to be supported on the support surface; A side limiting portion is provided on the outside of the support portion and extends upward relative to the support portion. The side limiting portion is located on the outer periphery of the laminate. The end of the side limiting portion away from the support portion is not higher than the light-receiving surface of the laminate.

2. The photovoltaic frame structure according to claim 1, characterized in that, A back overflow groove is formed on the support surface, extending along a first direction parallel to the thickness direction of the laminate. The side limiting portion and the support portion together define a side overflow groove that extends along the first direction and is open toward the laminate.

3. The photovoltaic frame structure according to claim 2, characterized in that, The depth of both the back overflow groove and the side overflow groove is not less than 0.5 mm.

4. The photovoltaic frame structure according to claim 2, characterized in that, The support surface has a plurality of back overflow grooves arranged at intervals along a second direction, the second direction being perpendicular to the first direction and parallel to the thickness direction of the laminate. The plurality of back overflow grooves include at least a first overflow groove and a second overflow groove. The second overflow groove is located on the side of the first overflow groove away from the side limiting portion. In the second direction, the width of the first overflow groove is greater than the width of the second overflow groove.

5. The photovoltaic frame structure according to claim 4, characterized in that, The second overflow groove has a plurality of grooves spaced apart along a second direction. A first protrusion is defined between the first overflow groove and an adjacent second overflow groove. A second protrusion is defined between any two adjacent second overflow grooves. In the second direction, the width of the first protrusion is greater than the width of the second protrusion.

6. A photovoltaic frame structure for mounting laminates, characterized in that, include: A support portion, wherein a support surface is formed on the upper surface of the support portion, the laminate is adapted to be supported on the support surface, and a back overflow groove is formed on the support surface; The glue applicator is located inside the support portion, and the upper surface of the glue applicator has a glue applicator plane.

7. The photovoltaic frame structure according to claim 6, characterized in that, The width of the glue application surface is greater than the width of the glue overflow groove on the back.

8. The photovoltaic frame structure according to claim 6, characterized in that, In the vertical direction, the distance between the glue application plane and the inner bottom wall of the back glue overflow groove is greater than the depth of the back glue overflow groove.

9. The photovoltaic frame structure according to claim 6, characterized in that, The glue applicator also has an overflow slope on the side facing the laminate. The overflow slope is connected to the side of the glue applicator plane away from the back overflow groove. In the direction away from the glue applicator plane, the overflow slope extends obliquely away from the laminate.

10. A photovoltaic module, characterized in that, include: Photovoltaic frame structure according to any one of claims 1-9; A laminate, which is mounted on the photovoltaic frame structure.

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