The Main Technologies Used in the Battery Thermal Management System
(1) Determine the optimal operating temperature range of the battery. The thermal management system is mainly used to coordinate the temperature around the battery, so in order to ensure the application effect of the thermal management system, the key technology developed by researchers is mainly used to determine the working temperature of the battery. As long as the battery temperature is kept within an appropriate range, the lithium battery can always be in the best working condition, providing sufficient power for the operation of new energy vehicles. In this way, the lithium battery performance of new energy vehicles can always be in excellent condition.
(2) Battery thermal range calculation and temperature prediction. This technology involves a large number of mathematical model calculations. The scientists use corresponding calculation methods to obtain the temperature difference inside the battery, and use this as a basis to predict the possible thermal behavior of the battery.
(3) Selection of heat transfer medium. The superior performance of the thermal management system depends on the choice of heat transfer medium. Most of the current new energy vehicles use air as the cooling medium. This cooling method is simple to operate, low in manufacturing cost, and can well achieve the purpose of battery heat dissipation.
(4) Adopt parallel ventilation and heat dissipation structure design. The ventilation and heat dissipation design between the lithium battery packs can expand the flow of air so that it can be evenly distributed among the battery packs, effectively solving the temperature difference between the battery modules.
(5) Fan and temperature measurement point selection. In this module, researchers used a large number of experiments to do theoretical calculations, and then used fluid mechanics methods to obtain fan power consumption values. Afterwards, researchers will use finite elements to find the most suitable temperature measurement point in order to accurately obtain battery temperature data.
