Photovoltaic module

Abstract

The utility model provides a photovoltaic assembly. The photovoltaic module includes: a front panel; the back plate is provided with a first wire passing through hole; the battery piece is positioned between the front panel and the back plate; the buffering structure comprises a penetrating part, a fixing part and a buffering part, the fixing part and the buffering part are arranged at the two ends of the penetrating part respectively, the penetrating part is arranged in the first wire passing through hole in a penetrating mode and provided with a second wire passing through hole, the buffering part is located on the side, facing the battery piece, of the back plate, and the fixing part is matched with the side, away from the battery piece, of the back plate. According to the utility model, the problem in the prior art that the photovoltaic module is easy to explode at the position of the hole in the back glass under the hail harsh climate condition is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to a photovoltaic component. Background Art

[0002] At present, with the rapid development of the photovoltaic industry, photovoltaic modules are used in more and more areas. Since hail with a diameter of 40mm or even larger is very likely to occur in mid- and high-latitude areas, it is very easy to cause the glass opening on the back of outdoor double-glass photovoltaic modules to explode. For the severe climate conditions of hail, there is no special response measure in the existing technology, and most of them are to thicken the glass to ensure the strength of the photovoltaic modules.

[0003] However, the above-mentioned countermeasures result in a larger overall weight of the photovoltaic modules, which increases the difficulty of transportation and installation and increases the labor intensity of the staff. Utility Model Content

[0004] The main purpose of the utility model is to provide a photovoltaic module to solve the problem in the prior art that the photovoltaic module is prone to bursting at the rear glass opening position under severe hail weather conditions.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a photovoltaic module, including: a front panel; a back panel, the back panel having a first wire-passing through hole; a battery cell located between the front panel and the back panel; a buffer structure, including a penetration portion, a fixing portion and a buffer portion, the fixing portion and the buffer portion are respectively arranged at two ends of the penetration portion, the penetration portion is penetrated in the first wire-passing through hole and has a second wire-passing through hole, the buffer portion is located on the side of the back panel facing the battery cell, and the fixing portion cooperates with the side of the back panel facing away from the battery cell.

[0006] Furthermore, the inner diameter of the second wire-passing through hole is greater than or equal to 10 mm; and / or the thickness of the penetration portion is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

[0007] Furthermore, the buffer structure is made of silicone or rubber; and / or the buffer structure is an integrally molded structure.

[0008] Further, there is one first wire passing through hole and one buffer structure; or, there are multiple first wire passing through holes, and the multiple first wire passing through holes are arranged at intervals along the length direction and / or width direction of the back plate, and there are multiple buffer structures, and the multiple buffer structures are arranged one-to-one corresponding to the multiple first wire passing through holes.

[0009] Furthermore, the fixing portion is a flange, and the orthographic projection of the flange on the buffer portion is on the buffer portion or inside the buffer portion.

[0010] Further, there is one flange; or, there are multiple flanges, and the multiple flanges are arranged at intervals along the circumference of the penetration portion.

[0011] Furthermore, the flange is an arc segment or ring-shaped.

[0012] Furthermore, the buffer portion is an annular structure, and the outer diameter of the annular structure is greater than or equal to 15 mm and less than or equal to 25 mm; or, the buffer portion includes an arc segment, and the outer diameter of the arc segment is greater than or equal to 15 mm and less than or equal to 25 mm.

[0013] Furthermore, the photovoltaic module also includes: a first adhesive film, located between the front panel and the battery cell; a second adhesive film, located between the back panel and the battery cell; wherein 0.05% to 0.2% of polyborosiloxane polymer material is added to the second adhesive film.

[0014] Furthermore, a surface of the fixing portion facing the back plate has a protective pattern.

[0015] By applying the technical solution of the utility model, the photovoltaic module includes a front panel, a back panel, a battery cell and a buffer structure. The back panel has a first wire-passing through hole, and the battery cell is located between the front panel and the back panel. The buffer structure includes a penetration portion, a fixing portion and a buffer portion. The fixing portion and the buffer portion are respectively arranged at two ends of the penetration portion. The penetration portion is penetrated in the first wire-passing through hole and has a second wire-passing through hole. The buffer portion is located on the side of the back panel facing the battery cell, and the fixing portion cooperates with the side of the back panel away from the battery cell. In this way, the second wire-passing through hole is used to penetrate the bus bar, and the buffer structure is arranged at the first wire-passing through hole. When the first wire-passing through hole is impacted by hail, the buffer structure can absorb and buffer the above-mentioned impact force, thereby effectively reducing the failure risk caused by the weak stress at the first wire-passing through hole, solving the problem in the prior art that the photovoltaic module is prone to bursting at the back glass opening position under severe hail weather conditions, and extending the service life of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A side view of an embodiment of a photovoltaic assembly according to the present utility model is shown;

[0018] Figure 2 Shows Figure 1 A cross-sectional view of the back plate and buffer structure of the photovoltaic module after assembly;

[0019] Figure 3 Shows Figure 2 Schematic diagram of the three-dimensional structure of the buffer structure.

[0020] The above drawings include the following reference numerals:

[0021] 10. Front panel;

[0022] 20. back plate; 21. first wire through hole;

[0023] 30. Battery cells;

[0024] 40. Buffer structure; 41. Penetration portion; 411. Second wire-passing through hole; 42. Fixing portion; 43. Buffer portion;

[0025] 50. First adhesive film;

[0026] 60. Second adhesive film. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directional words such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0030] In order to solve the problem in the prior art that photovoltaic modules are prone to bursting at the rear glass opening position under severe hail weather conditions, the present application provides a photovoltaic module.

[0031] like Figures 1 to 3 As shown, the photovoltaic module includes a front panel 10, a back panel 20, a battery cell 30 and a buffer structure 40. Among them, the back panel 20 has a first wire-passing through hole 21, and the battery cell 30 is located between the front panel 10 and the back panel 20. The buffer structure 40 includes a penetration portion 41, a fixing portion 42 and a buffer portion 43, the fixing portion 42 and the buffer portion 43 are respectively arranged at both ends of the penetration portion 41, the penetration portion 41 is penetrated in the first wire-passing through hole 21 and has a second wire-passing through hole 411, the buffer portion 43 is located on the side of the back panel 20 facing the battery cell 30, and the fixing portion 42 cooperates with the side of the back panel 20 away from the battery cell 30.

[0032] By applying the technical solution of this embodiment, the second wire-passing hole 411 is used to pass the bus bar, and the buffer structure 40 is arranged at the first wire-passing hole 21. When the first wire-passing hole 21 is impacted by hail, the buffer structure 40 can absorb and buffer the above-mentioned impact force, thereby effectively reducing the failure risk caused by the weak stress at the first wire-passing hole 21, and solving the problem in the prior art that the photovoltaic module is prone to bursting at the back glass opening position under severe climate conditions such as hail, thereby extending the service life of the photovoltaic module.

[0033] In this embodiment, the fixing portion 42 is limitedly cooperated with the side of the back plate 20 away from the battery cell 30, and the buffer structure 40 is fixed on the first wire through hole 21 through the fixing portion 42. The buffer portion 43 is used to buffer and absorb the impact force exerted on the first wire through hole 21 to avoid the explosion of the first wire through hole 21.

[0034] Optionally, the inner diameter of the second wire-passing through hole 411 is greater than or equal to 10 mm; and / or the thickness of the through-hole 41 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm. In this way, the above-mentioned size setting of the second wire-passing through hole 411 ensures that there is enough space for the busbar to pass through the back plate 20. At the same time, the above-mentioned thickness setting of the through-hole 41 can not only ensure the busbar lead-out during the packaging process, but also ensure the overall support strength of the buffer structure 40, thereby improving the buffering capacity of the buffer structure 40 and further avoiding the occurrence of the explosion phenomenon at the first wire-passing through hole 21.

[0035] In this embodiment, the thickness of the penetration portion 41 is 1.0 mm.

[0036] It should be noted that the thickness of the penetration portion 41 is not limited thereto, and can be adjusted according to working conditions and usage requirements. Optionally, the thickness of the penetration portion 41 is 0.6 mm, or 0.8 mm, or 1.2 mm, or 1.4 mm.

[0037] Optionally, the buffer structure 40 is made of silicone or rubber; and / or, the buffer structure 40 is an integrally formed structure. In this way, the buffer structure 40 made of silicone or rubber can not only produce a certain deformation so that it can be disassembled and assembled with the first wire through hole 21, but also improve its buffering capacity. At the same time, the above arrangement makes the structure of the buffer structure 40 simpler, easier to process and realize, and reduces the processing cost and difficulty of the buffer structure 40.

[0038] In this embodiment, the buffer structure 40 is made of silicone and is an integrally formed structure.

[0039] Optionally, there is one first wire-passing through hole 21 and one buffer structure 40; or, there are multiple first wire-passing through holes 21, and the multiple first wire-passing through holes 21 are arranged at intervals along the length direction and / or width direction of the back plate 20, and there are multiple buffer structures 40, and the multiple buffer structures 40 are arranged one-to-one with the multiple first wire-passing through holes 21. In this way, the above arrangement makes the number of first wire-passing through holes 21 more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff.

[0040] In this embodiment, there are three first wire-passing through holes 21 , which are arranged at intervals along the width direction of the back plate 20 . There are three buffer structures 40 , which are arranged one-to-one correspondingly to the three first wire-passing through holes 21 .

[0041] It should be noted that the number of the first wire-passing through holes 21 is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, the number of the first wire-passing through holes 21 is two, four, five, six, or more.

[0042] It should be noted that the arrangement of the plurality of first wire-passing through holes 21 is not limited thereto, and can be adjusted according to working conditions and usage requirements.

[0043] In other embodiments not shown in the drawings, a plurality of first wire-passing through holes are arranged at intervals along the length direction of the back plate.

[0044] In other embodiments not shown in the drawings, a plurality of first wire-passing through holes are arranged at intervals along the length direction and the width direction of the back plate.

[0045] In this embodiment, the fixing portion 42 is a flange, and the orthographic projection of the flange on the buffer portion 43 is on the buffer portion 43 or in the buffer portion 43. In this way, the above arrangement makes the structure of the fixing portion 42 simpler, easier to process and realize, and reduces the processing cost and difficulty of the fixing portion 42; on the other hand, the size of the buffer portion 43 is the same as or larger than the size of the flange, so as to improve the buffering and absorption capacity of the buffer portion 43, so as to avoid the occurrence of the plate bursting phenomenon at the first wire through hole 21.

[0046] Optionally, there is one flange; or, there are multiple flanges, which are arranged at intervals along the circumference of the penetration portion 41. In this way, the above arrangement makes the number of flanges more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff.

[0047] In this embodiment, there are two flanges, which are spaced apart along the circumference of the penetration portion 41 , so that the structure of the fixing portion 42 is simpler, easier to process and realize, and the processing cost and difficulty of the fixing portion 42 are reduced.

[0048] It should be noted that the number of flanges is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, the number of first wire-passing through holes 21 is three, four, five, six, or more.

[0049] Optionally, the flange is an arc segment or an annular shape. In this way, the above arrangement makes the shape of the flange more diverse to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff.

[0050] In this embodiment, the flange is an arc segment, and the two arc segments are arranged opposite to each other.

[0051] Optionally, the buffer portion 43 is an annular structure, and the outer diameter of the annular structure is greater than or equal to 15 mm and less than or equal to 25 mm; or, the buffer portion 43 includes an arc segment, and the outer diameter of the arc segment is greater than or equal to 15 mm and less than or equal to 25 mm. In this way, the above arrangement makes the structure of the buffer portion 43 simpler, easier to process and realize, and reduces the processing cost and difficulty of the buffer portion 43; on the other hand, it makes the shape of the buffer portion 43 more diverse to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff.

[0052] In this embodiment, the buffer portion 43 is an annular structure, and the outer diameter of the annular structure is 20 mm.

[0053] It should be noted that the value of the outer diameter of the annular structure is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, the outer diameter of the annular structure is 18 mm or 22 mm.

[0054] Optionally, the buffer portion 43 is in the shape of a sheet or a plate. Thus, the above arrangement makes the structure of the buffer portion 43 simpler, easier to process and realize, and reduces the processing cost and difficulty of the buffer portion 43.

[0055] In this embodiment, the penetration portion 41 is cylindrical and has an outer diameter that is consistent with the inner diameter of the first wire-passing through hole 21 . The thickness of the penetration portion 41 is consistent with the thickness of the back plate 20 .

[0056] like Figure 1As shown, the photovoltaic module also includes a first adhesive film 50 and a second adhesive film 60. The first adhesive film 50 is located between the front panel 10 and the battery cell 30, and the second adhesive film 60 is located between the back panel 20 and the battery cell 30. 0.05% to 0.2% of polyborosiloxane polymer material is added to the second adhesive film 60. In this way, for the second adhesive film 60, the fracture rate hysteresis effect of the boron oxygen bond composed of boron atoms and oxygen atoms at the microscopic level is utilized. With the increase of the external hail impact load, a phase transition from a viscous flow state to a highly elastic state, or even a glass state can occur. The macroscopic behavior is manifested as a sharp increase in the modulus, so that it can better resist impact deformation and absorb impact energy, thereby greatly improving the overall performance of the photovoltaic module.

[0057] In this embodiment, 0.1% of polyborosiloxane polymer material is added into the second adhesive film 60 .

[0058] It should be noted that the amount of polyborosiloxane polymer material added to the second adhesive film 60 is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, 0.08%, 0.12%, 0.15%, or 0.18% of polyborosiloxane polymer material is added to the second adhesive film 60 .

[0059] In this embodiment, the front panel 10 and the back panel 20 are both semi-tempered glass panels, and the thickness of the front panel 10 and the back panel 20 are both 2.0 mm.

[0060] Optionally, the surface of the fixing portion 42 facing the back plate 20 has a protective pattern. In this way, the above arrangement increases the contact area between the fixing portion 42 and the back plate 20, thereby improving the matching strength between the fixing portion 42 and the back plate 20, and preventing the buffer structure 40 from coming out of the first wire through hole 21 and affecting the buffer performance of the buffer structure 40.

[0061] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0062] The photovoltaic module includes a front panel, a back panel, a battery cell and a buffer structure. The back panel has a first wire-passing through hole, and the battery cell is located between the front panel and the back panel. The buffer structure includes a penetration portion, a fixing portion and a buffer portion. The fixing portion and the buffer portion are respectively arranged at two ends of the penetration portion. The penetration portion is penetrated in the first wire-passing through hole and has a second wire-passing through hole. The buffer portion is located on the side of the back panel facing the battery cell, and the fixing portion cooperates with the side of the back panel away from the battery cell. In this way, the second wire-passing through hole is used to penetrate the bus bar, and the buffer structure is arranged at the first wire-passing through hole. When the first wire-passing through hole is impacted by hail, the buffer structure can absorb and buffer the above-mentioned impact force, thereby effectively reducing the failure risk caused by the weak stress at the first wire-passing through hole, solving the problem in the prior art that the photovoltaic module is prone to bursting at the back glass opening position under severe hail weather conditions, and extending the service life of the photovoltaic module.

[0063] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0065] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0066] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A photovoltaic module, characterized in that: include: A front panel (10); A back plate (20), wherein the back plate (20) has a first wire-passing through hole (21); A battery cell (30) is located between the front panel (10) and the back panel (20); A buffer structure (40) comprises a penetration portion (41), a fixing portion (42) and a buffer portion (43), wherein the fixing portion (42) and the buffer portion (43) are respectively arranged at two ends of the penetration portion (41), the penetration portion (41) is penetrated in the first wire-passing through hole (21) and has a second wire-passing through hole (411), the buffer portion (43) is located on a side of the back plate (20) facing the battery cell (30), and the fixing portion (42) cooperates with a side of the back plate (20) facing away from the battery cell (30).

2. The photovoltaic module according to claim 1, characterized in that: The inner diameter of the second wire-passing through hole (411) is greater than or equal to 10 mm; and / or the thickness of the penetration portion (41) is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

3. The photovoltaic module according to claim 1, characterized in that: The buffer structure (40) is made of silicone or rubber; and / or the buffer structure (40) is an integrally formed structure.

4. The photovoltaic module according to claim 1, characterized in that: There is one first wire-passing through hole (21) and one buffer structure (40); or, there are multiple first wire-passing through holes (21), and the multiple first wire-passing through holes (21) are arranged at intervals along the length direction and / or width direction of the back plate (20); there are multiple buffer structures (40), and the multiple buffer structures (40) are arranged in a one-to-one correspondence with the multiple first wire-passing through holes (21).

5. The photovoltaic module according to claim 1, characterized in that: The fixing portion (42) is a flange, and the orthographic projection of the flange on the buffer portion (43) is on the buffer portion (43) or inside the buffer portion (43).

6. The photovoltaic module according to claim 5, characterized in that: There is one flange; or there are multiple flanges, and the multiple flanges are arranged at intervals along the circumference of the penetration portion (41).

7. The photovoltaic module according to claim 5, characterized in that: The flange is an arc segment or ring-shaped.

8. The photovoltaic module according to claim 1, characterized in that: The buffer portion (43) is an annular structure, the outer diameter of which is greater than or equal to 15 mm and less than or equal to 25 mm; or, the buffer portion (43) includes an arc segment, the outer diameter of which is greater than or equal to 15 mm and less than or equal to 25 mm.

9. The photovoltaic module according to claim 1, characterized in that: The photovoltaic module further comprises: A first adhesive film (50) is located between the front panel (10) and the battery cell (30); The second adhesive film (60) is located between the back plate (20) and the battery cell (30).

10. The photovoltaic module according to claim 1, characterized in that: The surface of the fixing portion (42) facing the back plate (20) has a protective pattern.

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