Thermal Management of Lithium-Ion Batteries Based on Honeycomb-Structured Liquid Cooling and Phase Change Materials

Batteries with high energy density are packed into compact groups to solve the range anxiety of new-energy vehicles, which brings greater workload and insecurity, risking thermal runaway in harsh conditions. To improve battery performance under ambient temperature discharge rate, a management system (BTMS) based on honeycomb-structured liquid cooling phase change materials (PCM) is innovatively proposed. In this paper, characteristics INR18650/25P studied theoretically experimentally. Moreover, influence structure, material operating parameters verifying simplified BTMS model. The results show that counterflow, honeycomb structure six tubes fins, 12% expanded graphite mass fraction 25 mm spacing give better group efficiency. maximum difference optimal 45.71 °C 4.4 at 40 environment/coolant, as against 30.4 4.97 23.6 respectively. Precooling coolant can further reduce environments, precooling within 5 could meet uniformity requirements. Furthermore, study provide guidance for design optimization