Experimental and simulative investigation on battery thermal management system with structural optimization of composite phase change material

For improving the thermal performance of the power battery module in multiple operating condition at different discharge rate, composite phase change material (CPCM) with structure optimizations have been successfully prepared and assembled into battery module, which are comprehensively designed to fulfill the energy utili-zation for electric vehicles. Compared with the various structures of cooling system, the battery module with all sides CPCM structure is an effective and feasible approach, which can obtain with a relatively long operation time and suitable temperature. The experimental and simulative results shown that the temperature distributions of battery module were influenced by assembling structures at different discharge rate, especially at high discharge rate. The maximum temperature of battery module with all side CPCM can be controlled below 47.5 degrees C, and the temperature difference was maintained within 1.1 degrees C. Compared with that, the battery module with other structure CPCM were obviously higher than 48 degrees C at high discharge rate. Besides, the cycling per-formance revealed that the maximum temperature can be effectively controlled with all sides CPCM structure. This study reveals that the battery module with CPCM can exhibit outstanding thermal management effect and provide insights into relevant energy storage fields.