An online report mentions that a conventional ICE vehicle in its lifetime of 12 years or 150000 km will emit 40 tons of CO2e. With tightening of the norms and countries setting emission targets, nowadays vehicle manufacturers are bringing out many new models of electric vehicles. The sale of EV vehicles are not without challenges. The electric vehicles traditionally require an e-motor for motive force, that are powered largely by Li-batteries located in a battery box. The batteries discharge when vehicles are running and get charged through the grid normally. When batteries charge and discharge, heat is dissipated. Generation of heat is a concern, since it reduces the life of a battery with life of battery depending on number of charge /discharge cycles. In an ideal condition a Battery Management System (BMS) ensures that the batteries are charged / discharged at optimal dissipated thermal load. However due to various random events like cell breakdown, mechanical damage to batteries, etc., the batteries could emit uncontrolled heat - which leads to a situation called “Thermal Runaways”. This thermal runaway may lead to fire, battery damage and in the worst case, a whole vehicle could get destroyed. So, it’s imperative to control the thermal run-away situation, by containing the fire within battery box and avoid fire propagation that could destroy whole vehicle. Such a method could limit the damage only to the Li-Ion battery box (in current configuration) and the vehicle itself could be saved and in some cases, precious human lives. There are many methods to deal with this event (ref . point b, point c). In this paper, we discuss one such method that could be a potential life/equipment saver.
A Methodology to Thermally Manage Li-Ion Battery Systems and Prevent Catastrophic Thermal Runaways
Sae Technical Papers
SAENIS TTTMS Thermal Management Systems Conference-2023 ; 2023
2023-09-14
Aufsatz (Konferenz)
Englisch
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