**6. Conclusions**

In this study, we designed an AC system for a cylindrical battery pack. The experiment was conducted on the basis of the simulation, and the following conclusions were drawn by comparing the results:


As the distance of cells in the pack greatly determines the performance of thermal management, future work will consider the optimization of the structural parameters.

**Author Contributions:** Data curation, X.C.; Formal analysis, X.P. and X.C.; Funding acquisition, X.L., X.P. and A.G.; Methodology, X.P. and X.L.; Software, A.G. All authors have read and agreed to the published version of the manuscript.

**Funding:** This was funded by the Department of education of Guangdong Province of China, gran<sup>t</sup> number 2019KTSCX039; the Natural Science Foundation of Hunan Province of China, gran<sup>t</sup> number 2017JJ3057; and the Research Foundation of Education Bureau of Hunan Province, China, gran<sup>t</sup> number 17C0473. The APC was funded by Shantou University.

**Conflicts of Interest:** The authors declare no conflict of interest.
