Experimental Assessment of Vibration-Induced Degradation of Li-Ion Cells Electric Performance in Space Launchers

Space battery applications are significantly growing to date. Secondary Li-Ion Batteries (LIBs) are largely integrated into electric systems of space vehicles and portable devices for power supply services. Vibration-induced stress on integrated LIB cells represents a crucial aspect, requiring particular attention especially for space applications. This paper assesses the vibration-induced degradation of LIB cells used in space launchers. Capacity fading after the application of about 30 minutes vibration stress, typical of the launch environment, is evaluated equal to 40% of the one induced by a cycling aging test consisting of 100 full cycles performed at 1C/2C as charge/discharge current rates. These results, confirmed by impedance measurements, highlight how the vibration has a great impact on LIB degradation in the investigated space application.