Experimental Studies of Temperature-Controlled Discharge Characteristics and Calculation of the Heat Generation Rate of NMC Type Battery Cells

The results of temperature-controlled discharge tests of NMC type battery cells of standard size 18,650 are presented. A mathematical model of heat generation rate in a battery cell during its discharge is proposed and substantiated in terms of thermodynamics. Based on the model and test results, it is shown that the optimal energy efficiency is the cell discharge mode at a temperature of 55 °C.