Anti-warping photovoltaic module

Abstract

The utility model discloses an anti-warping photovoltaic assembly, and relates to the field of photovoltaic technology. The anti-warping photovoltaic module sequentially comprises a front plate layer, an upper adhesive film layer, a battery piece layer, a central adhesive film layer, a structure enhancement layer, a lower adhesive film layer and a back plate layer from outside to inside, the front plate layer and the back plate layer are PET base material layers with the same thickness. According to the anti-warping photovoltaic module, a layer of PET base material with the same thickness is additionally arranged, so that warping forces borne by the upper layer of PET base material and the lower layer of PET base material are mutually counteracted and restrained, warping deformation is avoided, the additionally arranged PET base material can provide better protection for the photovoltaic cell, and the impact resistance of the photovoltaic cell is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field especially relates to a prevent warping photovoltaic module. BACKGROUND

[0002] Photovoltaic cell can convert solar energy into electric energy, thereby provide clean energy, along with energy and environmental problem day by day serious, photovoltaic power generation technology's development receives extensive attention. PET material has excellent physical mechanical properties in wide temperature range, service temperature can reach 120 DEG C, electric insulating property is excellent, even under high temperature high frequency, its electric performance is still better, and because of its creep resistance, fatigue resistance, friction resistance, dimensional stability are all very good, and be widely used in photovoltaic module for battery piece provides protection, thereby prolongs the service life of photovoltaic cell.

[0003] But battery piece will heat in the process of working, and the photovoltaic module after packaging can not effectively radiate heat, and PET material is deformed by heat, especially when installing PET base material in the cell front plate, the specific manifestation is that the middle is concave, and the periphery is warped deformation, thereby affecting the normal use of photovoltaic module. Therefore, providing a kind of photovoltaic module that can effectively avoid the warping deformation of PET material is the technical problem to be solved by the skilled in the art. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of prevent warping photovoltaic module, which can effectively avoid the warping deformation of PET material, thereby effectively prolong the service life of photovoltaic module.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A kind of prevent warping photovoltaic module, it is characterized in that, the prevent warping photovoltaic module sequentially includes front plate layer, glue film layer, battery piece layer, center glue film layer, structure reinforcing layer, lower glue film layer and back plate layer from outside to inside;

[0007] The front plate layer and back plate layer are PET base material layers with same thickness.

[0008] As an optional scheme of prevent warping photovoltaic module, the thickness of the PET base material layer is 50-500 μm.

[0009] As an optional scheme of prevent warping photovoltaic module, the structure reinforcing layer is one of resin impregnated fiber woven cloth or ceramic material.

[0010] As an optional scheme of prevent warping photovoltaic module, the thickness of the structure reinforcing layer is 400-1000 μm.

[0011] As an optional solution of the anti-warping photovoltaic module, the fiber in the fiber woven cloth is selected from one or several kinds of mixture of glass fiber, basalt fiber, carbon fiber, hemp fiber and polymer fiber.

[0012] As an optional solution of the anti-warping photovoltaic module, the inner side and / or the outer side of the PET substrate layer in the front plate layer is provided with a weather-resistant coating layer.

[0013] Further, the inner side and / or the outer side of the PET substrate layer in the back plate layer is provided with a weather-resistant coating layer.

[0014] Still further, the thickness of the weather-resistant coating layer is 10-30 μm.

[0015] As an optional solution of the anti-warping photovoltaic module, the outer side of the PET substrate layer in the front plate layer is provided with a weather-resistant film layer.

[0016] Further, the inner side is provided with a weather-resistant coating layer.

[0017] Still further, the thickness of the weather-resistant coating layer or the weather-resistant film layer is 10-30 μm.

[0018] As an optional solution of the anti-warping photovoltaic module, the upper adhesive film layer, the center adhesive film layer and the lower adhesive film layer are one or more of EVA, POE, EPE and TPO adhesive film.

[0019] As an optional solution of the anti-warping photovoltaic module, the thickness of the upper adhesive film layer, the center adhesive film layer and the lower adhesive film layer is 300-600 μm.

[0020] As an optional solution of the anti-warping photovoltaic module, at least one side of the structural reinforcement layer substrate layer is provided with a weather-resistant coating layer.

[0021] The beneficial effects of the utility model are as follows:

[0022] The anti-warping photovoltaic cell provided by the utility model cancels out the warping force suffered by the upper and lower PET substrates by adding a layer of PET substrate with the same thickness, and the mutual restraint avoids warping deformation, and the added PET substrate can also provide better protection for the photovoltaic cell and improve the impact resistance of the photovoltaic cell. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of an anti-warping photovoltaic cell module provided by the embodiment of the utility model;

[0024] In the drawing:

[0025] 1, front plate layer; 2, upper adhesive film layer; 3, cell piece layer; 4, center adhesive film layer; 5, structural reinforcement layer; 6, lower adhesive film layer; 7, back plate layer. DETAILED DESCRIPTION

[0026] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model is further illustrated below in combination with the drawings and through specific embodiments.

[0027] In the description of the utility model, unless another explicit provision and limitation, the terms "connected", "connected", "fixed" should be broad sense understanding, for example, can be fixed connection, or can be detachable connection, or be integrated;Can be mechanical connection, or electrical connection;Can be directly connected, or indirectly connected through the intermediate medium, can be two elements inside the communication or the interaction relationship of two elements.For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0028] As Figure 1 The utility model provides a kind of anti-warping photovoltaic module, the anti-warping photovoltaic module sequentially includes front plate layer 1, upper glue film layer 2, cell piece layer 3, center glue film layer 4, structural reinforcement layer 5, lower glue film layer 6 and back plate layer 7 from outside to inside.

[0029] The front plate layer 1 and back plate layer 7 are PET substrate layers with the same thickness.

[0030] In the prior art, the front plate of photovoltaic cell is often equipped with PET material, but because the temperature rises, the shrinkage speed of the PET material in the middle is higher than that of the edge, thus causing the warp deformation of the middle being low and the periphery being high.

[0031] To solve the problem of photovoltaic cell warping, the anti-warping photovoltaic cell provided by the embodiment makes the PET substrate layers on the upper and lower layers counteract the warping force received by each other and restrict each other, so as to avoid the warp deformation, and the added PET substrate layer can also provide better protection for the photovoltaic cell and improve the impact resistance of the photovoltaic cell.

[0032] As an optional solution of the anti-warping photovoltaic module, the PET substrate layer has a thickness of 50-500 μm, so as to provide sufficient mechanical properties for the photovoltaic cell and improve the impact resistance of the photovoltaic cell module.

[0033] As an optional solution of the anti-warping photovoltaic module, the structural reinforcement layer 5 is resin-infiltrated fiber woven cloth or ceramic material, which has good mechanical properties to increase the deformation resistance of the photovoltaic cell module.

[0034] To ensure that the structural reinforcement layer 5 can fully perform its function, as an optional solution for anti-warping photovoltaic modules, the thickness of the structural reinforcement layer 5 is 400-1000μm.

[0035] As an alternative to anti-warping photovoltaic modules, the fibers in the woven fabric are selected from one or a mixture of several of glass fibers, basalt fibers, carbon fibers, hemp fibers, and polymer fibers.

[0036] To improve the weather resistance of photovoltaic modules and as an alternative solution for anti-warping photovoltaic modules, a weather-resistant coating layer is provided on the inner and / or outer sides of the PET substrate layer in the front panel layer 1.

[0037] Furthermore, a weather-resistant coating layer is provided on the inner and / or outer sides of the PET substrate layer in the backing layer 7;

[0038] Furthermore, the thickness of the weather-resistant coating layer is 10-30 μm.

[0039] As an optional solution for anti-warping photovoltaic modules, a weather-resistant film layer is provided on the outer side of the PET substrate layer in the front panel layer 1;

[0040] Furthermore, a weather-resistant coating layer is provided on the inner side.

[0041] Furthermore, the thickness of the weather-resistant coating layer or weather-resistant film layer is 10-30 μm.

[0042] As an optional solution for anti-warping photovoltaic modules, the upper adhesive layer 2, the middle adhesive layer 4, and the lower adhesive layer 6 are one or more of EVA, POE, EPE, and TPO adhesive films.

[0043] As an optional solution for anti-warping photovoltaic modules, the thickness of the upper adhesive layer 2, the central adhesive layer 4, and the lower adhesive layer 6 is 300-600μm.

[0044] As an optional solution for anti-warping photovoltaic modules, the feature is that at least one side is provided with a weather-resistant coating layer.

[0045] Example 1

[0046] An anti-warping photovoltaic module comprises, from the outside to the inside, a front panel layer 1, an upper adhesive film layer 2, a cell layer 3, a central adhesive film layer 4, a structural reinforcement layer 5, a lower adhesive film layer 6, and a back panel layer 7.

[0047] The front panel layer 1 and the back panel layer 7 are PET substrate layers of the same thickness, with a thickness of 200μm; and weather-resistant coating layers are provided on both sides of the PET substrate layer in the front panel layer.

[0048] The thickness of the weather-resistant coating layer is 20 μm.

[0049] Furthermore, the PET substrate layer in the backing layer 7 is provided with a weather-resistant coating layer of polyvinylidene fluoride resin coating on both sides.

[0050] The structural reinforcement layer 5 is a resin-impregnated fiber woven fabric with a thickness of 600 μm;

[0051] The fiber is carbon fiber, and the resin is polyolefin resin.

[0052] The upper adhesive layer 2, the middle adhesive layer 4, and the lower adhesive layer 6 are EVA adhesive films, and the thickness of the upper adhesive layer, the middle adhesive layer, and the lower adhesive layer is 400μm.

[0053] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An anti-warping photovoltaic module, characterized in that, The anti-warping photovoltaic module comprises, from the outside in, a front panel layer, an upper adhesive film layer, a cell layer, a central adhesive film layer, a structural reinforcement layer, a lower adhesive film layer, and a back panel layer. The front panel and back panel are both PET substrate layers of the same thickness.

2. The anti-warping photovoltaic module as described in claim 1, characterized in that, The thickness of the PET substrate layer is 50-500μm.

3. The anti-warping photovoltaic module as described in claim 1, characterized in that, The structural reinforcement layer is either a resin-impregnated woven fabric or a ceramic material.

4. The anti-warping photovoltaic module as described in claim 3, characterized in that, The thickness of the structural reinforcement layer is 400-1000 μm.

5. The anti-warping photovoltaic module as described in claim 3, characterized in that, The fibers in the woven fabric are selected from one or a mixture of several of glass fibers, basalt fibers, carbon fibers, hemp fibers, and polymer fibers.

6. The anti-warping photovoltaic module as described in claim 1, characterized in that, A weather-resistant coating layer is provided on the inner and / or outer side of the PET substrate layer in the front panel layer.

7. The anti-warping photovoltaic module as described in claim 1, characterized in that, A weather-resistant coating layer is provided on the inner and / or outer side of the PET substrate layer in the backing layer.

8. A warping-resistant photovoltaic module as described in claim 6 or 7, characterized in that, The thickness of the weather-resistant coating layer is 10-30 μm.

9. The anti-warping photovoltaic module as described in claim 1, characterized in that, A weather-resistant film layer is provided on the outside of the PET substrate layer in the front panel layer; The inner side is coated with a weather-resistant coating. The thickness of the weather-resistant coating layer or weather-resistant film layer is 10-30 μm.

10. The anti-warping photovoltaic module as described in claim 1, characterized in that, The upper adhesive layer, the middle adhesive layer, and the lower adhesive layer are one or more of EVA, POE, EPE, and TPO adhesive films.

11. The anti-warping photovoltaic module as described in claim 1, characterized in that, The thickness of the upper adhesive layer, the middle adhesive layer, and the lower adhesive layer is 300-600μm.

12. The anti-warping photovoltaic module as described in claim 1, characterized in that, At least one side of the structural reinforcement layer is provided with a weather-resistant coating layer.

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