New, optical sensors for the battery industry

2022-10-18

In high-tech areas such as battery cell production, absolute precision is required. The new optoNCDT 1900-6 and 1900-6LL laser sensors are specially designed for measuring the thickness of coated battery films. The sensors with a 6 mm measuring range provide highly accurate results for film thickness measurement. The laser line (LL) version is optimized for rough and shiny surfaces. The sensor produces a small oval light spot rather than a point. The light spot compensates for inhomogeneous surfaces, resulting in stable signals and high accuracy.

Application in the battery industry

These precise sensors are used, among other things, for the thickness measurement of coated battery films. The homogeneous coating paste is called slurry. This metal oxide consists of nickel, cobalt, manganese and lithium and is mixed with water and solvent. The paste, applied to both sides of an aluminum film, is dried after application and then calendered under high pressure to evenly distribute the mixture on the film. The coating thickness accuracy must not deviate by more than +/- 2 μm. Due to their high measurement accuracy, the optoNCDT 1900 models are used for inline thickness measurement of the coating.

The two sensors with 6 mm measuring range expand the portfolio of the compact optoNCDT 1900 series. Therefore, measuring ranges between 2 and 500 mm are available. The sensors can therefore be used flexibly in numerous measurement tasks in different industries.