Influence of Low Pressures on the Performance of Lithium Ion Batteries for Airplane Applications

The electrification of aircrafts is a recent trend in aviation and with it the use batteries as energy carriers at high altitudes. These can be exposed to low pressures crucial understand influence on battery behavior. In this study, commercially available lithium ion were examined experimentally down 25 kPa. Discharge curves impedance measurements performed 23 °C for each pressure level. Cylindrical Lithium Nickel-Cobalt-Aluminum Oxide (NCA) Iron-Phosphate (LFP) cells did not show any influence, while Nickel-Manganese-Cobalt (NMC) pouch showed some performance variation reduced pressure. ohmic resistance increased by around 0.1 mΩ per kPa charge transfer SOCs. results that no strong change expected applications airplanes, however further research needed respect long term effects, thermal management safety.