Fast and Smart State Characterization of Large-Format Lithium-Ion Batteries via Phased-Array Ultrasonic Sensing Technology.

Figure 11 b shows that during the overcharging process, the signals from the phased array ultrasonic initially show a decreasing trend, followed by a noticeable increase at approximately 4.46 V, indicating that failure has already occurred inside the battery at this point.

also in 47,180 other papers