TS-C series spectral confocal displacement sensor

In the structure of lithium batteries, the separator is one of the key internal components. The separator is located between the positive and negative electrodes, and its main function is to separate the active materials of the positive and negative electrodes to prevent short circuits due to contact between the two electrodes, while allowing rapid transport of charged ions. In order to improve the thermal resistance of the separator, a slurry layer needs to be coated on the separator to enhance the safety performance of lithium batteries. There should be a certain bonding strength between the separator and the positive and negative electrodes to reduce the gap between the separator and the positive and negative electrodes during the battery charging and discharging processes, improving the battery performance. Lithium ion battery separator products include polyethylene (PE), polypropylene (PP), and composite films of PE and PP, etc. Currently commercialized PVDF separators are mainly coated on polyolefin separators, primarily made of PE and PP. The coating thickness on both sides of the asymmetric separator ranges from 0.5 to 5um. Chusvision’s TS-C series spectral confocal displacement sensor, through an opposing measurement device, can achieve online monitoring of the overall thickness of the lithium battery separator.