Analysis of Heat Dissipation Performance of Battery Pack based on CFD Simulation
The energy storage was an important supporting technology for achieving the dual carbon goal,and electro-chemical energy storage using lithium-ion batteries as energy carriers has been rapidly developing with strong national sup-port.However,the poor heat dissipation effect of lithium-ion battery packs has become a key bottleneck for the large-scale promotion of energy storage systems,which leaded to issues such as lifespan degradation,thermal runaway and so on.In response to this issue,it was proposed that three different liquid cooling heat dissipation structures for 280 Ah lithium-ion battery packs,and we presented the liquid cooling channel and battery pack structure schemes in details.By using ANSYS software,we analyzed the heat flow field.By comparing the comprehensive thermal performance of three flow channel schemes,that was extruded aluminum profile(design-1),stamped brazed aluminum plate(design-2),and harmonica tube(design-3),it was concluded that all three process cold plates met the heat dissipation requirements of lithium-ion batteries,and the stamped brazed aluminum plate(design-2)had the best heat dissipation effect.Finally,the heat dissipation scheme for stamping and brazing aluminum plates was tested,and the measured data met the simulation results,which provided reference for the selection of liquid cooling and heat dissipation process schemes for lithium-ion battery packs.
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