Numerical calculation of temperature field of energy storage battery module and optimization design of heat dissipation system
Thermal runaway in energy storage batteries poses a significant risk in energy storage power stations, making thermal management crucial for the efficiency, lifespan, and operational safety of batteries. This study presents the design of an energy storage battery module with a rated capacity of 11.52 kWh, utilizing a 60-series large cylindrical battery as the fundamental unit. A numerical model, based on the finite element method, was developed to couple fluid and temperature fields within the battery module. This model facilitates the analysis of air flow rates in the battery module's air ducts and the temperature field distribution. To validate the accuracy of the numerical calculations, a prototype was subjected to a charging/discharging temperature-rise test. The study further optimizes the temperature field distribution of the battery module by adjusting the arrangement of heat dissipation holes. A novel side U-shaped opening structure is introduced, significantly enhancing the temperature uniformity within the battery module and reducing the maximum temperature of the cells. Postoptimization, the maximum temperature difference in the module cells decreased by 2.6 ℃, and the standard deviation of temperature dropped by 1.18. These findings offer valuable insights for estimating temperature rise in energy storage battery modules and designing efficient heat dissipation mechanisms.
lithium batterytemperature field calculationfinite element methodheat dissipation system optimization
万方数据
维普
