With an increase in cooling flow rate and a decrease in temperature, the heat exchange between the lithium-ion battery pack and the coolant gradually tends to balance. No datasets were generated or analysed during the current study. Kim J, Oh J, Lee H (2019) Review on battery thermal management system for electric vehicles.
Since the batteries in the battery pack will generate a lot of heat during operation, the performance of the battery pack will be severely affected. As a result, new energy vehicles are increasingly being developed with a focus on enhancing the rapid and uniform heat dissipation of the battery pack during charging and discharging.
Thermal management systems of batteries must be sufficient to control energy loss, reduce carbon emission, and be capable of long-run heat and thermal energy storage and to help in gaining a longer battery life. Compared to metal oxide nanoparticles, CNTs are quite pricey despite their efficacy in improving the PCM's thermal properties.
Thermal optimization may be achieved battery thermal management system (BTMS) that employs phase change materials (PCMs). However, PCM's shortcomings in secondary heat dissipation and restricted thermal conductivity still require development in the design, structure, and materials used in BTMS.
Fig. 1 is a simplified illustration of a battery system's thermal behavior. The total heat output in a battery is from many different processes, including the intercalation and deintercalation of the existing ions (i.e., entropic heating), the heat of phase transition, overpotentials, and the heat discharge due to mixing.
High voltage and increasing temperature will deteriorate the output performance of the existing battery thermal management system, and thus risk for loss of energy, damage to battery life, and low storage capacity is always there.