Numerical Simulation on Temperature Field inside Sealed Battery Chamber

When a Li-ion battery bank discharges continuously at large power inside a sealed battery chamber for a long time, much heat energy will be produced and accumulated, which may cause batteries leaking, metamorphosing, exploding, and so on, and further decrease the efficiency and safety of the battery bank. So it is necessary to investigate the temperature field inside the chamber. This paper establishes a finite element model with the software ANSYS to simulate the temperature field distribution inside the battery chamber of an underwater vehicle. Simulation result indicates that the maximum temperature is lower than the critical temperature of 150 ℃ when the battery bank discharges for 2.5 hours at 40 A.