Monitoring of battery production

Challenge

When calendering electrodes for lithium-ion batteries, the coated metal foil is compacted with high precision. Deviations in pressure or temperature significantly impair cell quality. Excessive pressure can damage the material, while insufficient pressure prevents the electrodes from achieving the desired density and porosity. In addition, empty rolls must be detected in good time to avoid unplanned downtime. 

Solution

TURCK's complete IO-Link solution ensures optimal calendering by monitoring all critical parameters in real time. The TBEN-L4-8IOL multi-protocol I/O module with eight IO-Link master channels serves as the central interface. It collects data from PS+ pressure sensors, which ensure constant pressure for the compression of the electrode foil. TS+ temperature sensors monitor both the roller temperature and the heating fluid to ensure uniform heating. To avoid production stoppages, the RU80D ultrasonic sensor continuously measures the diameter of the rolls and detects in good time when a new roll needs to be inserted. Thanks to IO-Link, all sensors can be easily parameterized and quickly replaced if necessary. In addition, the sensors provide additional diagnostic data that can be used for preventive maintenance and process optimization. TURCK's solution thus enables consistently high quality of battery cells while reducing downtime and maintenance costs.