Abstract
Power battery pack under high-rate discharge conditions produces thermal aggregation phenomena. Generated heat during charging and discharging that distributes in battery pack affects performance of battery and so that shortens its life. So the battery pack thermal management is necessary to electric vehicles. In this paper, an ideal thermal management solution is put forward with a battery pack temperature equilibrium approach and a battery pack overall thermal dissipation structure by finite element analysis. Theoretical analysis result shows that the thermal management solution can effectively cool the battery pack to the ideal working temperature range 25~40°C and improve the battery pack temperature uniformity with the maximum temperature difference which is below 5°C, which enhance the cycle life of power battery pack for electric vehicle applications.
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