Research on Low Temperature Discharge Characteristics of Ternary Lithium Batteries for Unmanned Systems

In order to study the effect of low temperature on the discharge characteristics of high energy density ternary lithium batteries for UAV, two types of ternary lithium batteries, energy type and power type, were used to conduct discharge tests at 25 degrees C, 0 degrees C and -25 degrees C with energy recovery type charge/discharge test equipment. The test results showthat the energy density of energy type ternary lithium battery can reach 266.11 Wh/kg at room temperature, 237.38 Wh/kg at 0 degrees C and 180.20 Wh/kg at low temperature; the energy density of power type ternary lithium battery can reach 244.72 Wh/kg at room temperature, 221.13 Wh/kg at 0 degrees C and 181.20 Wh/kg at low temperature. The energy density at low temperature is 181.57 Wh/kg.