Accelerating Rate Calorimetry Tests of Lithium-Ion Cells Before and After Storage Degradation at High Temperature

Accelerating Rate Calorimetry Tests of Lithium-Ion Cells Before and After Storage Degradation at High Temperature

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Understanding the behavior of Li-ion cells during thermal runaway is critical to evaluate the safety of these energy storage devices under outstanding conditions.Li-ion cells possess a high energy density and are used to store and supply energy to many aerospace applications.Incidents related to the overheating or thermal runaway of these cells Boxing - Accessories can cause catastrophic damages that could end up costly space missions; therefore, thermal studies of Li-ion cells are very important for ensuring safety and reliability of space missions.This work evaluates the thermal behavior of Li-ion cells before and after storage degradation at high temperature using accelerating rate calorimeter (ARC) equipment to analyze the thermal behavior of Li-ion cells under adiabatic conditions.Onset temperature points of Youth Goggles self-heating and thermal runaway reactions are obtained.

The onset points are used to identify non-self-heating, self-heating and thermal runaway regions as a function of state of charge.The results obtained can be useful to develop accurate thermo-electrochemical models of Li-ion cells.