Abstract

A 3-D module of power battery thermal management unit with phase change material is formulated. The cold start-up time of air heating is 4.2 times of phase change material heating from 243.15 to 283.15 K. The temperature difference decreases from 9.9 to 4.6°C when the thermal conductivity of the phase change material increases to five times. The heat transports from the domain near an electrode can reheat the domain away from the electrode and make the thermal energy distributing more even inside the battery. A well-designed thermal management system with phase change material is positive for power battery applying under cold temperature.

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