Ultrasonic Phased Array Tomography for Mapping and Evaluating Battery Properties

Analysis of battery cell structure is performed providing a subsurface ultrasonic phased array imaging system. The phase array uses multiple transmitter-receiver pairs to provide phased array tomography of the battery. The phased array imaging system provides mapping and evaluation of properties of the battery cell structure. The system collects ultrasonic signals scattered from internal anomalies to produce detailed cross-sectional images that reveal locations, distributions and physical properties of the anomalies, accommodating both lateral and thickness variations of scanned portions of the battery cell structure to detect, locate and characterize gases and monitor their evolution in a Lithium Ion Battery (LIB), by producing subsurface interior gas images at different cycles.