Thermal Science 2024 Volume 28, Issue 2 Part B, Pages: 1263-1270
https://doi.org/10.2298/TSCI2402263L
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Simulation of temperature field and optimization of heat dissipation structure for lithium-ion power battery pack based on multi-objective function optimization
Li Feng (Yellow River Conservancy Technical Institute, Kaifeng, Henan, China), fl_1142@163.com
In order to improve the thermal power dissipation of batteries and reduce the
maximum temperature difference of batteries, the air conditioning system
using battery type was optimized. Using multi-objective optimization method
based on orthogonal experiment and multiple rotations, the local optimum
values of multi-objective were obtained: the left end height A of entrance
area and the height B of air outlet were 9 mm and 28 mm, respectively, with
a tolerance value C of 0.4 mm for battery spacing. The simulation results of
this optimization model show that the maximum temperature difference of the
battery volume is 306.627 K (33.477°C) and 3.815 K (3.815°C), respectively.
Compared with the initial model, they are reduced by 9.55% and 25.89%,
respectively. Compared with the single factor analysis optimization model,
they are reduced by 0.36% and 20.27%, respectively, indicating that the
multi-objective optimization results are better. This multi-objective
programming solves the problem of different parameters of air conditioning
heat dissipation model to some extent, and can provide reference for the
optimization design of other models.
Keywords: lithium-ion power battery pack, temperature field simulation, optimization of heat dissipation structure, multi-objective function optimization
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