Thermal Analysis Of A Sealed Battery Power System Enclosure For Underwater Operations
COMSOL Multiphysics was used to simulate the heat flux from battery cells via conjugate heat transfer physics which consist of laminar flow and heat transfer in solids and fluids. Laminar flow function was used to simulate natural convection of air within the sealed enclosure. Heat transfer in solids and fluids were used to simulate conduction of heat through the materials and air within the enclosure. A constant temperature was applied to the outer surface of the model.
The result presented in the simulation indicates that the battery power system is capable of operating for 4 hours continuously without exceeding the temperature limit. With addition of a thermal management system, such as a phase changing material to store the thermal energy, the overall enclosure temperature and be brought down to level where the battery performance is optimal.
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