Research on performance of thermal management system integrated with multiple heat exchange methods

A good thermal management system can effectively improve the performance of the lithium-ion battery and ensure the thermal safety of the lithium-ion battery. Therefore, based on the heat-generating characteristics of lithium-ion batteries obtained above, this paper established a composite thermal management system including heat pipes, thermally conductive silica gel, phase change materials, and microchannel liquid cooling plates. The velocity uniformity coefficient, friction resistance coefficient, and thermal characteristic parameters are used as evaluation indicators, and the thermal management system inlet flow is optimized to obtain the optimal inlet flow of the thermal management system. Based on this, the thermal management capability of the established thermal management system under different operating conditions of the lithium-ion battery is analyzed. It is advisable to select 0.67L/min as the inlet flow rate of the microchannel liquid-cooled plate of the composite thermal management system.