Politecnico di Milano – Department of Mechanical Engineering

Project BATTWIN: Flexible And Scalable Digital-Twin Platform For Enhanced Production Efficiency And Yield In Battery Cell Production Lines.

The objective of BATTWIN is to support the ramp-up of Li-Ion battery manufacturing by developing a novel Multilevel Digital Twin platform towards Zero-Defect Manufacturing in battery production, that will reduce defect rates in battery production lines. The solution integrates four pillars, namely (i) a multi-sensor data acquisition and management layer, supported by data semantics through a Digital Battery Passport data model, (ii) process-level digital twins, modelling the critical stages of electrode manufacturing, cell assembly and conditioning through multi-physics, data-driven and hybrid approaches, (iii) system-level digital twins, based on simulation and analytical modelling, (iv) user-centric, goal-driven digital twin workflows, increasing the explainability of digital twins and driving the user in system design and control. The approach is tested in two industrial pilots producing different battery chemistries and geometries, validating the flexibility and scalability of the approach towards Zero Defect European Gigafactories.