Electro-Thermal Mapping of LFP Cells for Designing EV Battery Packs

With the rise in EVs, concerted effort has been put to understand the cell chemistry, which influences the performance parameters and the thermal characteristics of the battery pack. Herein, we have investigated the electrochemical and thermal behaviour of commercially available LiFEPO4 cells. This study brings out a correlation between the accessible SOC and the cell temperature rise to the different C-rates at different ambient temperatures. These observations are extremely important to design the thermal management system of the battery pack and to decide on the limits of accessible SOCs for different ambient temperatures conditions.