Simulation and Optimization of Lithium-Ion Battery Thermal Management System Integrating Composite Phase Change Material, Flat Heat Pipe and Liquid Cooling

A large-capacity prismatic lithium-ion battery thermal management system (BTMS) combining composite phase change material (CPCM), a flat heat pipe (FHP), and liquid cooling is proposed. The three conventional configurations analyzed in this study are the BTMSs using only CPCM, CPCM with aluminum diffusion plates, FHPs. In addition, CPCM–FHP assisted at lateral sides established to enhance performance of batteries. Moreover, influences coolant temperature, number FHPs pipes, direction on temperature field BTMS discussed. Finally, orthogonal design method used for multi-level analysis multiple factors improve light weight system. optimal parameter combination obtained achieve best BTMS, maximum difference 43.17 °C 3.36 °C, respectively, under discharge rate 2C high-temperature environment 37 °C. scheme further affirmed through comprehensive balance method.