光伏组件用材料的测量程序第5-2部分:边缘密封耐久性评估指南

[中文适用范围]： IEC TS 62788-5-2 为评估边框密封条防止光伏组件从边缘吸湿的能力提供了指南。本文件不包括框胶粘剂（有时俗称边框密封条），这些胶粘剂在设计上不能以有意义的程度防止吸湿。边框密封条应保持防潮、保持粘附，并保持与环境的电气绝缘。许多测试可以在材料层面进行，但由于存在多个表面、材料相互作用和机械应力，在迷你组件或组件上进行测试是必要的。为此，本文件包含三种类型的测试样品：材料、迷你组件和全尺寸组件。预计可以仅使用材料进行快速评估和比较，随后进行更严格的迷你组件测试，以正确代表所有界面，最后进行全尺寸组件测试，以评估实际制造过程，从而解决未预见的问题。本文件旨在评估边框密封条和整体包装设计的防潮能力，并提供符合公认资格标准的足够电气绝缘。它旨在揭示边框密封条的渗透性能不足、电气安全问题或导致吸湿的分层。此处隐含迷你组件和全尺寸组件的制造符合 IEC 61730 系列。本文件不试图评估组件的预测使用寿命与整体性能的关系。它旨在确定在材料层面边框密封条是否能保持防潮，然后揭示潜在的故障模式，或评估制造变化对边框密封条性能的 probable 影响。测试条件侧重于可能导致安全、吸湿和脱粘相关故障模式的应力。就本文件而言，边框密封条被定义为一种聚合物材料，设计用于放置在两个不可渗透（或极低渗透性）的前板和背板材料之间，以限制从侧面进入的水分。在某些情况下，扩散率远低于乙烯 - 醋酸乙烯酯（EVA）中的封装剂也可起到边框密封条的作用，并可根据本文件进行评估以进行比较。 [外文原描述]： IEC TS 62788-5-2:2020 provides guidelines to assess the ability of an edge seal to prevent moisture ingress from the edges of PV modules. This document does not cover frame adhesives (sometimes colloquially referred to as edge seals) which by design do not serve to prevent moisture ingress to a meaningful degree. Edge seals should keep moisture out, remain adhered, and maintain electrically insulation from the environment. Much of the testing can be done on the material level, but given the fact that there are multiple surfaces, materials interactions, and mechanical stresses, testing on mini modules or modules is necessary. To accomplish this, this document contains three types of test sample types, materials, mini-modules, and full-size modules. It is intended that a quick evaluation and comparison can be made using materials only. This would be followed up by more rigorous tests using mini-modules where all the interfaces are correctly represented. And finally, full-size module tests are used to evaluate the actual construction process to allow unanticipated concerns to be addressed.