光伏助焊剂腐蚀性能的现场评估方法研究

王一品, 黄朝志, 徐文丽, 万振, 何光耀, 丁运虎

中国机械总院集团武汉材料保护研究所有限公司
通信作者: 黄朝志, 工程师, 主要从事电镀添加剂的性能研究, 邮箱: 957666040@qq.com

Research on On-Site Evaluation Methods for Corrosion Performance of Photovoltaic Soldering Flux

WANG Yipin, HUANG Chaozhi, XU Wenli, WAN Zhen, HE Guangyao, DING Yunhu

China Academy of Machinery Wuhan Research Institute of Materials Protection Co., Ltd.
Corresponding Author: HUANG Chaozhi, Engineer, Research Focus: Electroplating Additive Performance Research, E-mail: 957666040@qq.com

文章历史: 收稿日期: 2025-11-09

摘    要
针对光伏组件人工返修过程中光伏助焊剂引发电池片“断栅”失效的现场痛点，聚焦实用化、可落地的腐蚀性评价需求，建立了一套“快速检测+现场验证”的光伏助焊剂腐蚀性现场评价方法。通过对市售主流助焊剂的极化曲线、电导率测试发现：未引发断栅的助焊剂自腐蚀电流密度比引发断栅的低1个数量级，且低游离卤素、优化有机酸配比的助焊剂更易满足现场使用要求。基于此筛选的新助焊剂CB-T可完全避免断栅问题，为产线快速判断助焊剂适用性、规范返修作业提供直接指导。

Abstract
Addressing the on-site pain point of "grid breakage" failure in solar cells caused by photovoltaic flux during the manual rework of photovoltaic modules, this paper focuses on the practical and implementable corrosion evaluation requirements, and establishes an on-site corrosion evaluation method for photovoltaic flux featuring "rapid testing + on-site verification". Through polarization curve and conductivity tests on mainstream commercial fluxes, it was found that the self-corrosion current density of fluxes that did not cause grid breakage was an order of magnitude lower than that of fluxes that do. Furthermore, fluxes with low free halogens and optimized organic acid ratios were more likely to meet on-site application requirements. The new flux CB-T selected based on this could completely avoid the grid breakage problem, providing direct guidance for production lines to quickly determine the applicability of fluxes and standardize rework operations.

关键词
光伏助焊剂; 电池片栅线; 现场腐蚀评价; 自腐蚀电流密度; 电导率

Keywords
photovoltaic flux; solar cell grid; on-site corrosion evaluation; self-corrosion current density; electrical conductivity

引用文本
王一品, 黄朝志, 徐文丽, 等. 光伏助焊剂腐蚀性能的现场评估方法研究[J]. 表面工程与再制造, 2025, 25(6): 45-50. DOI:10.26935/j.issn.2097-5317.2025.0039.

WANG Yipin, HUANG Chaozhi, XU Wenli, et al. Research on On-Site Evaluation Methods for Corrosion Performance of Photovoltaic Soldering Flux[J]. Surface Engineering & Remanufacturing, 2025, 25(6): 45-50. DOI:10.26935/j.issn.2097-5317.2025.0039.

中图分类号
TG172

基金项目
无

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