Thermal Simulation and Optimization of Lithium Iron Phosphate Battery Modules Based on Ansys

doi:10.16628/j.cnki.2095-8188.2020.10.007

Abstract

Abstract:

Based on the finite element analysis software of Ansys/Fluent,this paper built the model of lithium iron phosphate batteries and simulated the temperature field and flow field of the battery modules used in the power grid energy storage system.The simulation results show that there is a large difference in the fluid flow between the top layer and the bottom layer of the battery modules,leading a large uneven temperature difference between different layers of the battery module.By improving the front and rear doors of the battery cabinet,the front and rear main air passages were optimized to reduce the maximum temperature in the battery cabinet.Then,by adding deflector plates on the cabinet door,the uniformity of temperature field and flow field distribution in the battery cabinet was improved,and the temperature difference between different battery modules was effectively reduced.

Key words: lithium iron phosphate battery module, thermal simulation, temperature field, flow field, deflector plate

CLC Number:

TM912.1

CHEN Xuhai, LUO Jingsheng, CHEN Yongfu, XIE Jianhua, CHEN Kai, DONG Jiqing. Thermal Simulation and Optimization of Lithium Iron Phosphate Battery Modules Based on Ansys[J]. LOW VOLTAGE APPARATUS, 2020, 0(10): 41-46.

Figures/Tables 12

References 15

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属性	材料	比热容/ [J·(kg·K)^-1]	导热系数/ [W·(m·K)^-1]
正极	磷酸铁锂	1 569	1.58
负极	石墨	1 437	1.04
叠片	聚乙烯	1 978	0.33
正极金属极耳	铝	951	237.50
负极金属极耳	铜	385	400.00