Experimental Investigation on Thermal Management of Liquid Cooled Lithium Ion Battery Pack for Electric Vehicle

Abstract

Numerous countries have pledged to achieve carbon neutrality by 2050 in order to tackle newlinethe issue of global warming. One of the most crucial and vital jobs in achieving carbon newlineneutrality is transportation. In response to the global energy and environmental crises, newlineenergy-efficient pure electric cars (EVs) and hybrid electric vehicles (HEVs) with green newlineenergy power are being developed as prospective replacements for the present generation of newlinecombustion-engine automobiles. One of the newest industries to emerge in this era of newlinesustainable energy revolution is battery energy storage. The emergence of electric vehicles newline(EVs) in the automotive industry stems from the escalating emissions crisis and the newlineimminent depletion of fossil fuels, a consequence of their widespread and unanticipated newlineutilization globally. An integral component in the manufacturing of EVs is the battery, with newlineLithium-ion (Li-ion) cells currently standing as the most advanced and efficient cell newlinetechnology available. These cells demonstrate optimal functionality within an operational newlinetemperature range of 15°C to 35°C. To address the thermal management of these batteries, newlinevarious cooling techniques have been developed, including air cooling, liquid cooling, Phase newlineChange Material (PCM), and heat pipe-based systems. Among these, liquid cooling has newlineemerged as the most efficient, adaptable, and convenient system for implementation in EVs. newline The used Nano fluids are primarily compared to ethylene glycol utilizing MATLAB newlineSimulink. The results of the simulation showed that utilizing Nano fluid instead of ethylene newlineglycol as the coolant cools the battery pack more quickly. It was discovered that cooling a newlinebattery pack using ethylene glycol takes 480 seconds, whereas cooling the battery pack with newlineNano fluids only takes 150 seconds, even when the temperature drops from 40 to 25 degrees newlineCelsius. Nano fluids cool more quickly and effectively because of their increased thermal newlineconductivity, which is important for heat transmission.