Photovoltaic module with high water-blocking structure

Abstract

The utility model relates to a photovoltaic assembly with a high water-blocking structure, which belongs to the technical field of photovoltaic assemblies and comprises an upper-layer cover plate, an upper-layer adhesive film, a battery string, a lower-layer adhesive film and a lower-layer cover plate, and the upper-layer cover plate, the upper-layer adhesive film, the battery string, the lower-layer adhesive film and the lower-layer cover plate are sequentially arranged from top to bottom. The upper-layer adhesive film comprises a low-water-resistance upper-layer EVA adhesive film and a high-water-resistance upper-layer POE adhesive film, the upper-layer POE adhesive film is arranged at the edge of the upper-layer EVA adhesive film, the lower-layer adhesive film comprises a low-water-resistance lower-layer EVA adhesive film and a high-water-resistance lower-layer POE adhesive film, and the lower-layer POE adhesive film is arranged at the edge of the lower-layer EVA adhesive film. The upper POE adhesive film is arranged on the edge of the upper EVA adhesive film, the lower POE adhesive film is arranged on the edge of the lower EVA adhesive film, high-cost butyl rubber water blocking can be replaced, additional equipment investment is not needed, meanwhile, secondary EVA filler strips are reduced, and the reliability of the photovoltaic module is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic module technical field especially relates to a photovoltaic module with high water -resisting structure. BACKGROUND

[0002] In prior art, photovoltaic cell piece of photovoltaic module adopts EVA adhesive film to package, then cooperates butyl adhesive water -resisting and EVA pad strip to increase the reliability of photovoltaic module, but the cost of butyl adhesive water -resisting is higher, and EVA pad strip needs extra equipment to produce. SUMMARY

[0003] In order to overcome above-mentioned defects of prior art, the utility model provides a photovoltaic module with high water -resisting structure to solve the problem in background art.

[0004] In order to realize above-mentioned utility model purpose, the utility model provides a photovoltaic module with high water -resisting structure, the photovoltaic module includes upper layer cover, upper layer adhesive film, battery string, lower layer adhesive film, lower layer cover, the upper layer cover, the upper layer adhesive film, the battery string, the lower layer adhesive film, the lower layer cover are sequentially arranged from top to bottom, the upper layer adhesive film includes upper layer EVA adhesive film of low water -resisting and upper layer POE adhesive film of high water -resisting, the upper layer POE adhesive film is arranged in the edge of the upper layer EVA adhesive film, the lower layer adhesive film includes lower layer EVA adhesive film of low water -resisting and lower layer POE adhesive film of high water -resisting, the lower layer POE adhesive film is arranged in the edge of the lower layer EVA adhesive film.

[0005] Further, the upper layer POE adhesive film includes upper through -hole, the size of the upper through -hole is consistent with the size of the upper layer EVA adhesive film, the lower layer POE adhesive film includes lower through -hole, the size of the lower through -hole is consistent with the size of the lower layer EVA adhesive film.

[0006] Further, the size of the upper layer EVA adhesive film and the lower layer EVA adhesive film is same, the size of the upper layer POE adhesive film and the size of the lower layer POE adhesive film is same.

[0007] Compared with prior art, the utility model has the advantages of:

[0008] By setting a circle of upper layer POE adhesive film in the edge of upper layer EVA adhesive film, by setting a circle of lower layer POE adhesive film in the edge of lower layer EVA adhesive film, thus can replace high -cost butyl adhesive water -resisting, and need not extra equipment investment, reduce secondary EVA pad strip simultaneously, increase the reliability of photovoltaic module. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the structural schematic diagram of the utility model embodiment;

[0010] Figure 2 It is sectional structure schematic view of the utility model embodiment;

[0011] Figure 3 It is structure schematic view of upper layer adhesive film of the utility model embodiment.

[0012] Figure 4 It is structure schematic view of lower layer adhesive film of the utility model embodiment. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The embodiment of the utility model will be described below in conjunction with the drawings.

[0014] As Figures 1-4 As shown in a kind of photovoltaic module with high water resistance structure, the photovoltaic module includes upper cover plate 1, upper layer adhesive film 2, cell string 3, lower layer adhesive film 4, lower cover plate 5, upper cover plate 1, upper layer adhesive film 2, cell string 3, lower layer adhesive film 4, lower cover plate 5 are sequentially arranged from top to bottom, upper layer adhesive film 2 includes low water resistance upper layer EVA adhesive film 8 and high water resistance upper layer POE adhesive film 6, upper layer POE adhesive film 6 is arranged at the edge of upper layer EVA adhesive film 8, lower layer adhesive film 4 includes low water resistance lower layer EVA adhesive film 9 and high water resistance lower layer POE adhesive film 7, lower layer POE adhesive film 7 is arranged at the edge of lower layer EVA adhesive film 9;

[0015] Upper layer EVA adhesive film 8, lower layer EVA adhesive film 9 are used to package cell string 3, prevent the influence of external environment on the electrical performance of cell string 3, by setting upper layer POE adhesive film 6 and lower layer POE adhesive film 7, can replace the high cost butyl adhesive water resistance used in prior art, and material can be directly purchased on market, without additional equipment investment, while reducing secondary EVA pad strip, increase the reliability of photovoltaic module;

[0016] Upper layer POE adhesive film 6 includes upper through hole, the size of upper through hole is consistent with the size of upper layer EVA adhesive film 8, lower layer POE adhesive film 7 includes lower through hole, the size of lower through hole is consistent with the size of lower layer EVA adhesive film 9;Upper layer EVA adhesive film 8 and lower layer EVA adhesive film 9 are same in size, the size of upper layer POE adhesive film 6 and lower layer POE adhesive film 7 is same, same size is convenient for manufacturing, reduce cost;

[0017] By setting a ring of upper POE adhesive film 6 at the edge of the upper EVA adhesive film 8, and setting a ring of lower POE adhesive film 7 at the edge of the lower EVA adhesive film 9, the high-cost butyl rubber water-blocking can be replaced, no additional equipment investment is needed, the secondary EVA pad strip is reduced, and the reliability of the photovoltaic module is increased.

[0018] The technical scheme of the present application is described above in combination with the specific embodiments, but it should be noted that the above description is only for explaining the scheme of the present application, and cannot be interpreted as a specific limitation on the protection scope of the present application in any way. Based on the explanation herein, other specific embodiments or equivalent replacements of the present application that can be thought of by those skilled in the art without creative labor will fall within the protection scope of the present application.

Claims

1. A photovoltaic module having a high water barrier structure, characterized by, The photovoltaic module comprises an upper cover plate (1), an upper adhesive film (2), a cell string (3), a lower adhesive film (4) and a lower cover plate (5), which are sequentially arranged from top to bottom, the upper adhesive film (2) comprises a low-water-resistance upper EVA adhesive film (8) and a high-water-resistance upper POE adhesive film (6), the upper POE adhesive film (6) is arranged at the edge of the upper EVA adhesive film (8), the lower adhesive film (4) comprises a low-water-resistance lower EVA adhesive film (9) and a high-water-resistance lower POE adhesive film (7), and the lower POE adhesive film (7) is arranged at the edge of the lower EVA adhesive film (9).

2. The photovoltaic module with high water barrier structure according to claim 1, characterized in that, The upper POE adhesive film (6) comprises an upper through hole, and the size of the upper through hole is consistent with the size of the upper EVA adhesive film (8), the lower POE adhesive film (7) comprises a lower through hole, and the size of the lower through hole is consistent with the size of the lower EVA adhesive film (9).

3. The photovoltaic module with high water barrier structure according to claim 2, characterized in that, The size of the upper EVA adhesive film (8) is the same as that of the lower EVA adhesive film (9), and the size of the upper POE adhesive film (6) is the same as that of the lower POE adhesive film (7).

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