Method for detecting and evaluating electrolyte wettability of battery cell

• Main Authors: YAO LINGFENG, YI GUANGYAO, QI CONGYU, WU JIANGXUE, LI QIANG, SU SHUFA
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a method for detecting and evaluating electrolyte wettability of a battery cell. The detection and evaluation method comprises the following steps: performing liquid injection on a battery cell, performing CT scanning on the battery cell under different infiltration times after liquid injection, respectively obtaining CT reconstruction section diagrams under different infiltration times, and evaluating the electrolyte wettability of the battery cell under different infiltration times according to gray level changes in the CT reconstruction section diagrams under different infiltration times. According to the detection and evaluation method provided by the invention, the wettability of the electrolyte of the battery cell can be quickly and accurately evaluated according to the size of the gray level change region through the two-dimensional imaging result of CT scanning, and meanwhile, a relation between the wettability degree and the performance of the battery cell can be established, s