Basic Module Optimization Design of Power Battery Pack Based on CFD Thermal Analysis
Designs a 34-string 36-parallel power pack based on 18650 single-cell lithium-ion batteries with a certain type of electric vehicle under certain comprehensive working conditions as the target range requirement.In order to optimize the overall power pack thermal management,one of the basic parallel modules is analyzed for thermal management,and forced air cooling parallel ventilation is used for heat dissipation.Internal resistance and heat generation experiments are conducted on the 18650 single cell battery to verify the accuracy of the basic heat source data.Based on the forced heat dissipation system of Z-type battery pack,the thermal simulation analysis of the basic battery pack configuration is conducted.It is found that the inclination angle of the sink cavity and the height of the manifold are changed in turn,and that the best heat dissipation effect is achieved when the angle of the sink cavity is 7° and the height of the manifold is 9 mm,at which time the maximum temperature and the maximum temperature difference of the parallel module can meet the design requirements,thus completing the optimized design of the basic module for an overall thermal management system for the power pack.
CFD simulationthermal management systemlithium-ion battery packforced air cooling
万方数据
维普
