太阳电池密封用片组以及太阳电池模组;SHEET SET FOR ENCAPSULATING SOLAR CELL AND SOLAR CELL MODULE

摘要

本发明的太阳电池密封用片组配置于受光面侧保护构件与背面侧保护构件之间，用于将太阳电池元件及配线材料密封，且具备配置于受光面侧的第一密封材片及配置于背面侧的第二密封材片。而且，于测定温度范围25℃~180℃、频率1.0Hz、升温速度10℃/min、剪切模式的条件下测定固体黏弹性时的120℃下的交联处理前的所述第一密封材片的储藏弹性模量(P1)与交联处理前的所述第二密封材片的储藏弹性模量(P2)满足下式(1)的关系。;[数1]Log(P1/P2)>0…(1) A sheet set for encapsulating a solar cell of the invention is disposed between a protective component at a light receiving surface side and a protective component at a back surface side, is used for encapsulating a solar cell element and a wiring material, and has a first encapsulating material sheet disposed at the light receiving surface side and a second encapsulating material sheet disposed at the back surface side. Besides, a storage elastic modulus (P1) of the first encapsulating material sheet before a cross-linking treatment and a storage elastic modulus (P2) of the second encapsulating material sheet before the cross-linking treatment satisfy a relationship of Formula (1) below, wherein a solid viscoelasticity is measured at 120 ℃ under a condition of a measuring temperature ranging from 25℃ to 180 ℃, a frequency of 1.0 Hz, a temperature rising speed of 10℃;[Math 1] Log(P1/P2)>0…(1)