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| Thermal Simulation for a 48 V/50 Ah Lithium-Ion Battery Pack |
| Received:September 25, 2018 Revised:December 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.12.002 |
| KeyWord:lithium-ion battery thermophysical parameter simulation analysis COMSOL Multiphysics |
| Author | Institution |
| LUO Wei-lin |
1. Shanghai Institute of Space Power-Sources, Shanghai , China |
| ZHOU Shao-yun |
1. Shanghai Institute of Space Power-Sources, Shanghai , China |
| LIU Hui |
1. Shanghai Institute of Space Power-Sources, Shanghai , China |
| XIA Bo-yan |
2. Harbin Institute of Technology, Harbin , China |
| LYU Chao |
2. Harbin Institute of Technology, Harbin , China |
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| Abstract: |
| Objective To simulate thermal coupling of lithium-ion battery based on COMSOL Multiphysics software and correct identify thermal property parameters relevant to battery. Methods A thermal model for lithium-ion battery pack simulation was first established. Secondly, for parameterization of thermal properties, the battery was heated in an adiabatic environment based on different shapes and sizes of heaters to decouple the acquisition of each thermal property battery parameter. The thermal property parameters of lithium-ion battery were identified by simplifying the heat transfer model equation and boundary conditions. Finally, based on the established theoretical basis and the identified thermal simulation parameters of lithium-ion battery, the temperature field of lithium-ion battery cell and battery pack under different charging rates were simulated and analyzed by COMSOL Multiphysics simulation software. Experiments were carried out to validate the accuracy of the model. Results According to the comparison of simulation results and experimental data, the temperature field of the surface and interior of the lithium-ion battery pack could be described accurately with errors less than 0.5 ℃. Conclusion Therefore, when the lithium-ion battery pack thermal management system was analyzed and designed within a certain error range. The results obtained through simulation can provide reference and guidance. |
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