Method and system for testing electrolyte resistance of diaphragm

• Main Authors: ZHUANG ZHI, CHENG YUE, BAO JINZHEN, WANG YINGLI, TIAN ZHOU, CHOI YEO-OK, ZHANG XINYUE
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the technical field of battery diaphragm testing, and provides a method for testing electrolyte resistance of a diaphragm, which comprises the following steps: (S1) carrying out color fastness test on the diaphragm to obtain the powder falling rate delta 1 of the diaphragm; (S2) carrying out soaking treatment on the diaphragm in an electrolyte to obtain a diaphragm subjected to liquid soaking, and carrying out color fastness test on the diaphragm subjected to liquid soaking to obtain a powder falling rate delta 2 of the diaphragm subjected to liquid soaking; and (S3) calculating the electrolyte resistance delta of the diaphragm, wherein delta = ((delta2-delta1)/delta1) * 100%. 本发明属于电池隔膜测试的技术领域，其中提供一种测试隔膜耐电解液性能的方法，包含：(S1)对隔膜进行色牢度测试，以取得所述隔膜的掉粉率δ1；(S2)将所述隔膜以电解液进行浸泡处理，以取得浸液后隔膜，并对所述浸液后隔膜进行所述色牢度测试，以取得所述浸液后隔膜的掉粉率δ2；以及(S3)计算所述隔膜的耐电解液性能δ，其中：δ＝((δ2-δ1)/δ1)*100％。