In-line and at-line battery CT enabled by MetalJet sources

Quality assurance and process control are becoming an increasingly important aspect of electric vehicle (EV) battery production as a result of increasing production worldwide. Following vehicle fires caused by EV batteries, there is a rising demand for improved quality assurance. Further, being able to quickly increase the yield of new production lines by monitoring the production process is an important aspect to offset the costs of new battery factories. Inspection with high-speed x-ray CT is an approach to improve quality assurance, e.g. through anode/cathode overhang inspection, but also analysis of full battery cells for continuous process control. Here we show how fast CT scanning can be achieved for prismatic and cylindrical EV battery cells by utilising the MetalJet x-ray source combined with a high-performance photon-counting detector.