Investigation on Thermophysical Characterization of Nano Composite Phase Change Materials for Battery Cooling in EV

Li-ion batteries are preferred for Electric Vehicles (EV) due to its high energy density, high power, long life cycles and low self-discharge rate. The performance of Li-ion batteries and life span are limited by its operating temperature, the safest operating temperature of the Li-ion batteries are below 500C, The operating temperature exceeded during fast charging and discharging which causes internal heating of battery it is essential to increase the dissipation of heat generated by the battery rapidly. Nano Enhanced Phase change Material (PCM) is proposed as Battery Thermal Management System. by nature the pure paraffin has low thermal conductivity and sub-cooling characteristics . In order to increase the thermal conductivity of PCM, thermal conductive substance such as nanoparticles are added to PCM, SiO2 nanoparticles were dispersed into paraffin wax tosynthesisSiO2 –PCM nanocomposites. The chemical, physical and thermal properties of CPCMs were determined by various material characteristic techniques. The TGA and DTG results show that all CPCMs have good thermal and chemical stability. With the addition of SiO2 improved the thermal and chemical stability of pure paraffin The latent–heat of fusion was decreased with increasing the loading of SiO2 and also the thermal conductivities of CPCM increased