Evaluating thermal performance of pouch type lithium polymer battery cell

Abstract

This article presents an experimental study of battery temperature under constant discharge rate. This study considers several constant discharge rates, constant air velocities, gap between battery cells in the battery module and the placement of thermocouple sensors in order to study the thermal behaviour of the battery cell. The relationship of temperature and discharge rates at different point on battery cell surface is compared. The heat generation on the battery surface as a function of discharge time are captured by RTD thermocouple and linked to the LabVIEW software. An axial fan creates constant air velocities that help in removing heat away from battery module during discharge process. Variables that are considered in this experiment are the discharging rate, air velocities and the thermal behaviour of the Lithium-ion battery cell on various points across the battery cell surface.