Stefano Donati
Thermal runaway experimental analysis on 18650 Lithium-ions batteries during nail penetration test.
Rel. Davide Papurello. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Energetica E Nucleare, 2024
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Abstract
The need to find an alternative to transport powered by fossil fuels to reduce our impact on the planet is accompanied by the constant search for energy storage technologies. The excessive use of fossil fuels has led to a serious state of air pollution and is complicit in global warming; for these reasons, it has become of fundamental importance to change, gradually, the power system of transportation. Lithium-ions batteries are the most widespread technology for this purpose, but a fundamental parameter to take into consideration is the risk in case of an accident: during a collision with another vehicle, the batteries located inside the car are stressed considerably and this can be the cause of a puncture or irreversible deformation of the cell; events of this type are considered a risk for the occupants of the vehicle and all those involved in the accident as it can result in a high-temperature fire that can be potentially lethal.
The stresses to which the vehicle is subjected during driving on the road such as vibrations, shocks and temperature changes must also be considered, stresses that, in the long run, can damage the battery pack
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