Battery thermal runaway-thermal management integrated layout decision based on aerogel and phase change material sandwich structure
In order to improve the comprehensive effect of thermal runaway suppression and thermal management heat dissipation of battery modules,this study designed a thermal management sys-tem with phase change material aerogel sandwich structure be-tween batteries and set up different thickness layout forms.The comprehensive benefits of each layout were obtained and com-pared by classifying the data and performing Min-Max normaliza-tion and giving different weights to accumulate.The results show that the pure aerogel is the best for restraining the uncontrolled heat transmission.Compared with air cooling,it can extend the time of the last battery in the module to generate heat out of con-trol,but the heat dissipation effect of battery thermal manage-ment is significantly worse;For strengthening heat management and heat dissipation,pure phase change material arrangement has the best effect.Compared with air cooling,it can reduce the maxi-mum temperature of battery in a discharge cycle by more than 20℃,but its suppression of heat runaway propagation is signifi-cantly weaker than pure aerogel arrangement;For the comprehen-sive benefits of thermal runaway and thermal management,the PCM-aerogel-PCM layout is more widely applicable than other layout forms.It ensures the effect of restraining thermal runaway of the battery while strengthening the heat dissipation of the bat-tery during normal operation to maximize the overall benefits.
万方数据
维普
