Backboard for high heat dissipation photovoltaic module and preparation method

Abstract

The invention relates to the technical field of solar cell backboard, and in particular relates to a backboard for high heat dissipation photovoltaic module and a preparation method, the backboard comprises a high thermal conductivity weather-proof layer, an aluminum foil layer, a bonding layer and a lower weather-proof layer orderly formed, the underside of the high thermal conductivity weather-proof layer is pasted to the aluminum foil layer, two sides of the bonding layer are respectively pasted to the aluminum foil layer and the lower weather-proof layer, the lower weather-proof layer is the fluorine resin modified polyolefin film provided with the concave-convex grid structure on the surface, wherein the high thermal conductivity weather-proof layer is prepared by the fluorocarbon coating, the raw material of the fluorocarbon coating comprises the fluorocarbon resin, isocyanate, inorganic filler, ultraviolet light absorber, light stabilizer and butyl acetate; the raw material of fluorine resin modified polyolefin film comprises the polypropylene resin, fluorinated ethylene-propylene resin, filler, anti-ultraviolet agent and antioxygen. The backboard for high heat dissipation photovoltaic module is good in heat dissipation effect, high in photoelectric conversion rate and simple in structure. The preparation method for the backboard for high heat dissipation photovoltaic module is simple in process, convenient in operation control, stable in quality and high in production efficiency.

Description

technical field [0001] The invention relates to the technical field of solar battery backplanes, in particular to a backplane for high heat dissipation photovoltaic modules and a preparation method thereof. Background technique [0002] The solar cell module accumulates considerable heat while performing photoelectric conversion, and the temperature rise of the module will directly affect the photoelectric conversion efficiency of the cell, while the conventional solar backsheet uses a PET substrate with a thickness of 125-350 μm, and the thickness of the double-sided coating is The 20-50μm fluorine coating or adhesive composite fluorine film is used to protect the PET substrate against damp heat aging and ultraviolet aging, thereby prolonging the service life of the component. However, the heat dissipation of the backplane of this structure is relatively poor, and it is easy to cause heat accumulation of the components, which directly affects the photoelectric conversion ef...

AI Technical Summary

Problems solved by technology

However, the heat dissipation of the backplane of this structure is relatively poor, and it is easy to cause the heat accumulation of the components, which directly affects the photoelectric conversion efficiency of the cell.