Numerical Simulation Study on Thermal Management of New Energy Power Battery
A thermal model of a lithium-ion module is established,and the potential of a phase change material(PCM)for thermal management of the battery module is investigated.The temperature distribution characteristics of the modules with different discharge multiplicities(1C,2C,3C)under natural convection conditions and PCM cooling conditions are comparatively investigated using the finite element method to study the effects of different cell cell spacing and different ambient temperatures on the temperature distribution of the battery pack.The results show that compared with natural convection conditions,the maximum temperature of the battery module is reduced by 22.18 K,33.17 K,and 45.26 K under PCM cooling conditions;the larger the cell spacing within the battery module,the smaller the temperature rise of the module,the slower the rate of temperature rise,and the smaller the maximum temperature.The PCM module can also insulate the battery at low temperatures.This study shows that PCM effectively reduces the temperature rise of the battery module during charging and discharging.
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