A reflective backplane for photovoltaic modules
A photovoltaic module and backplane technology, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., to achieve the effect of improving the utilization rate of light energy, increasing the output power, and increasing the area
Active Publication Date: 2018-04-27
SUZHOU GOLDEN STAR ELECTRONICS TECH CO LTD
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Problems solved by technology
There is a layer of flat aluminum foil reflective structure on the back plate of some photovoltaic modules, but it is a regular reflection, and the high-intensity light that directly hits the back plate surface is reflected to the outside of the photovoltaic module
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0034] In order to achieve the purpose of the present invention, as Figure 1-6 As shown, one embodiment of the present invention is: a reflective backsheet for photovoltaic modules, including a substrate layer 1, a fluorine layer 3, and a microstructure reflective layer 2, and the fluorine layer 3 is arranged under the substrate layer 1 On the surface, the upper surface of the substrate layer is provided with a microstructure reflective layer 2 at intervals, and t...
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The invention provides a reflection back plate for a photovoltaic module. The reflection back plate comprises a substrate layer, a fluorine layer and micro-structural reflection layers. The fluorine layer is arranged on the lower surface of the substrate layer, the micro-structural reflection layers are correspondingly arranged in gap areas among cells in the photovoltaic module, each micro-structural reflection layer comprises a concave-convex micro-structural layer and a reflection layer, and the surface of each concave-convex micro-structural layer is coated with the corresponding reflection layer. Compared with the prior art, the reflection back plate has advantages that by arrangement of the micro-structural reflection layers in the gap areas among the cells in the photovoltaic module, reflection area can be increased; by the concave-convex micro-structural layer which changes an incident ray angle, reflected light rays reach surfaces of the cells to realize recycling, so that the light energy utilization rate is increased, and output power of the photovoltaic module is increased.
Description
technical field [0001] The invention relates to a reflective backplane, in particular to a reflective backplane used for photovoltaic modules. Background technique [0002] The backsheet is located on the outermost layer of the back of the photovoltaic cell and is an important part of the photovoltaic cell module. It not only plays the role of packaging, but also plays a role in ensuring that the photovoltaic cell is not affected by the environment and ensures the service life of the photovoltaic cell. [0003] Most of the light irradiated on the photovoltaic cell module panel is absorbed and utilized directly to the surface of the photovoltaic cell, but some of the light is also irradiated to the gap area between the photovoltaic cell sheets and is not effectively utilized. There is a layer of flat aluminum foil reflective structure on the back panel of some photovoltaic modules, but it is a regular reflection, and the high-intensity light that directly hits the back panel ...
Claims
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IPC IPC(8): H01L31/049H01L31/054
CPCY02E10/52
Inventor 张丽萍高瑞丁晶
Owner SUZHOU GOLDEN STAR ELECTRONICS TECH CO LTD