Influence of Different Arrangement on Phase Change Thermal Management System of 21700 Lithium Battery
[1]GUO Chaxiu,WEI Jinyu.Influence of Different Arrangement on Phase Change Thermal Management System of 21700 Lithium Battery[J].Journal of Zhengzhou University (Engineering Science),2023,44(02):91-97.[doi:10.13705/j.issn.1671-6833.2023.02.009]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
44卷
Number of periods:
2023 02
Page number:
91-97
Column:
Public date:
2023-02-27
- Title:
- Influence of Different Arrangement on Phase Change Thermal Management System of 21700 Lithium Battery
- Keywords:
- numerical simulation; lithium-ion battery; thermal management; phase change material; thermal conductivity
- CLC:
- TK124
- DOI:
- 10.13705/j.issn.1671-6833.2023.02.009
- Abstract:
- Taking 21700 lithium ion battery pack as the research object, the finite element simulation was carried out by controlling the changes of battery spacing, convective heat transfer coefficient, and Phase Change Material ( PCM) thermal conductivity of lithium battery with different arrangement. The effects of cell spacing, convective heat transfer coefficient and PCM thermal conductivity on the temperature field of different battery arrays Rectangular, Quadrilateral, and Hexagonal Arrangement with phase change BTMS were studied. The results showed that when the battery spacing was 4 mm and 6 mm, the three had approximate maximum temperature, and when the battery spacing was 2 mm and 1 mm, the maximum temperature of the Rectangular Arrangement was the largest, for example, the maximum temperature rise of the Rectangular Arrangement was 105. 86% and 108. 25% of the Quadrilateral Arrangement and Hexagonal Arrangement, respectively. However, the temperature differences of the three components tended to decrease with the increase of the spacing. With different convective heat transfer coefficients, the maximum temperature of Rectangular Arrangement was always the largest while that of Quadrilateral Arrangement was the smallest. With the increase of convective heat transfer coefficient, the temperature difference among the three showed a trend of increasing. With the increase of the thermal conductivity of PCM, the maximum temperature of the three gradually decreased with a decreasing rate. With the five different thermal conductivity of PCM, the average maximum temperature rise of Rectangular Arrangement was 105. 31% and 106. 02% of that of Quadrilateral Arrangement and Hexagonal Arrangement, and the temperature difference of latent heat storage stage of the three decreased. In the sensible heat stage, the temperature difference between Rectangular Arrangement and Hexagonal Arrangement was not affected, but the temperature difference of Quadrilateral Arrangement increased continuously. Considering the highest temperature and temperature difference, the Hexagonal Arrangement lithium battery pack had the best thermal performance with PCM thermal management.
- References:
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Last Update:
2023-02-25