Thermographic Study of Thermal Processes during Battery Charging and Discharging

In this paper, the thermal behaviour of lithium-ion (LI) batteries at different charging and discharging modes is studied. With the help of infrared thermography is carried out continuous monitoring of the surface temperature distribution under different environmental conditions of batteries with different residual life. A circuit for providing a constant discharge current has been designed and used for the purposes of the study. An approach for optimizing the charging and discharging modes based on thermal measurements is proposed. This fast approach can be an alternative to the experimental study of thermal effects and it is possible to be built in battery heat management systems.