Thermal design and analysis of vertical module li-ion battery

This paper describes the thermal design and analysis of Lithium-ion battery using COTS (commercially off the shelves) 18650 cells for a LEO spacecraft. The battery modules are designed in 10S12P configuration wherein 10 cells are in series and 12 cells are in parallel connection making a total of 120 nos. of cells per module. The sleeve or the cell housing is built in longitudinal direction, where the cells are held in lateral directions, against the qualified horizontal battery configurations like IMS1, MIP and SARAL batteries. A detailed thermal analysis is carried out for six cases with and without one cell string failure at beginning of life (BOL) & end of life (EOL) by considering the typical low earth orbit. The temperature distributions, transient responses and gradients are presented for all the cases. This work includes the detailed design features followed by analysis results and conclusions.