申请人:Mitsui Chemicals Tohcello, Inc.
公开号:EP2822043A1
公开(公告)日:2015-01-07
The invention is a sheet set for encapsulating a solar battery including a first encapsulating sheet and a second encapsulating sheet which are disposed between a light-incident surface protective member and a back surface protective member, and are used to encapsulate solar battery elements.
When the first encapsulating sheet and the second encapsulating sheet are subjected to a heating and pressurization treatment in which the first encapsulating sheet and the second encapsulating sheet are heated and depressurized at 150°C and 250 Pa for three minutes, and then are heated and pressurized at 150°C and 100 kPa for 15 minutes, a volume resistivity of the first encapsulating sheet, which is based on JIS K6911 and is measured at a temperature of 100°C with an applied voltage of 500 V, is higher than a volume resistivity of the second encapsulating sheet.
The first encapsulating sheet is disposed between the light-incident surface protective member and the solar battery elements.
The second encapsulating sheet has at least one polar group selected from a carboxyl group, an ester group, a hydroxyl group, an amino group, and an acetal group.
本发明是一种用于封装太阳能电池的片材组,包括第一封装片材和第二封装片材,它们被放置在入射光表面保护部件和背面保护部件之间,用于封装太阳能电池元件。
在对第一封装片和第二封装片进行加热和加压处理时,先将第一封装片和第二封装片在 150°C 和 250 Pa 的温度下加热和减压 3 分钟,然后在 150°C 和 100 kPa 的温度下加热和加压 15 分钟,第一封装片的体积电阻率(基于 JIS K6911 并在 100°C 温度和 500 V 的外加电压下测量)高于第二封装片的体积电阻率。
第一封装片位于光入射表面保护部件和太阳能电池元件之间。
第二封装片具有至少一个选自羧基、酯基、羟基、氨基和缩醛基的极性基团。