Performance parameters of battery modules for solar street lights

Solar cell components are outdoor installation components, and its reliability depends largely on its anti-corrosion, aging resistance, moisture resistance, impact resistance and other properties, which requires the packaging structure, edge sealing effect of solar cell components and the junction box on the back of the module. The quality meets certain design requirements. At present, the packaging structure used in solar cell components is: glass- EVA ( ethylene-vinyl acetate copolymer ) -solar cell- EVA - TPT film ( weather-resistant composite fluoroplastic film ) laminated package, and then assemble the wire, junction box, edge seal The belt and the aluminum frame gold frame, in this structure, the battery and the junction box can be directly connected by wires. The materials, spare parts and structure used in the component manufacturing process are consistent with each other in life, and will not cause the entire component to fail due to one damage.

   a . Glass: Low-iron tempered glass ( also called white glass ) is used , with a thickness of 3.2mm and a light transmittance of over 91% . This glass is also resistant to the radiation of solar ultraviolet rays, and the light transmittance does not decrease.

   b . EVA : A high-quality EVA film layer with a thickness of 0.5mm added with anti-ultraviolet agent, antioxidant and curing agent is used as the sealant of the solar cell and the connecting agent with glass and TPT . It has high light transmittance and anti-aging ability.

   c . TPT : the back of the solar cell: the cover monofluoroplastic film is white, which reflects the sunlight, so the efficiency of the module is slightly improved, and because of its higher infrared emissivity, it can also reduce the work of the module Temperature also helps to improve the efficiency of components. Yangzhou Sino-American New Energy Lighting learned that this fluoroplastic film first has the basic requirements of aging resistance, corrosion resistance, and airtightness required by solar cell packaging materials.

   d . Frame: The aluminum alloy frame used has high strength and strong resistance to mechanical impact.

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