Investigation of the Effect of Pre-Heating on Performance Enhancement of Li-ion Batteries in Aviation Applications

In this study, the effects of pre-heating in terms of the voltage and current capacities and performance parameters of the lithium-ion (Li-ion) batteries are investigated experimentally. The test setup includes resistive DC load banks, electrical isolation, and protection equipment, qualified Li-ion batteries for aviation, and data acquisition system. Load banks are utilized for supplying different ranks of resistive loads to the equipment under test through the protection devices. The Li-ion batteries are discharged with 10C, 12.5C, and 15C during the test activities, and the performance parameters are inspected by using a data acquisition system that includes the Aeronautical Radio, Incorporated (ARINC), and resistive temperature detector (RTD) modules by real-time monitoring and post data. These discharge test activities are reiterated for diverse temperatures for both operating with or without internal heater. The variety of the battery performance was illustrated in distinct State of Charge (SoC), and temperature values in this paper. It was seen that the internal heater directly affects the discharge performance of the Ii-ion battery.