Abstract
Lithium Polymer(LiPo) batteries are a promising technology for energy storage systems(ESS), electrical vehicles(EV), mobile electrics and drone applications. LiPo batteries have attracted interest from academia and industry due to their high power and energy densities compared to other battery technologies. Despite the extensive usage of LiPo batteries, there is a substantial to fire and explosion risk with intense heat and considerable amounts of flammable gas. The abuse conditions which trigger the thermal runaway of the LiPo batteries can be categorized into mechanical, electrochemical and thermal impacts. In this study, the thermal runaway was induced by three abused impact of penetration, overheating and overcharging in a LiPo single cell. The flammable gas which generated thorough thermal runaway was analyzed with Py-GCMS. The DC short circuit phenomenon was characterized with osilloscope and metallogical structures.
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