文献类型：期刊文献

英文题名：An analytical approach of temperature field for cylindrical Li-ion cell under contact thermal resistance and anisotropic heat transfer

作者：Yang, Zedong Zhao, Yu Wang, Chaolin Zhang, Yongfa Ren, Sheng Du, Can

第一作者：Yang, Zedong

通信作者：Zhao, Y[1]

机构：[1]Guizhou Univ, Coll Civil Engn, Guiyang 550025, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Sch Civil Engn, Guiyang 550003, Peoples R China

第一机构：Guizhou Univ, Coll Civil Engn, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Civil Engn, Guiyang 550025, Guizhou, Peoples R China.

年份：2026

卷号：175

期号：P2

外文期刊名：INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

收录：;EI(收录号：20261420420293);Scopus(收录号：2-s2.0-105034620265);WOS:【SCI-EXPANDED(收录号:WOS:001731368600001)】；

基金：This research was supported by National Natural Science Foundation of China (No. 52364004, No.GCC [2022] 005-2, No. QianJiaoJi [2024] 18, No. 52464005) .

语种：英文

外文关键词：Temperature field; Anisotropy; Multilayer structure solution; Analytical solution; Li-ion cells

摘要：Currently, the research on analytical modeling of cylindrical Li-ion cells considering contact thermal resistance (CTR) and anisotropic heat transfer remains imperfect. Therefore, based on the eigenfunction orthogonal technique, an analytical solution of temperature field for cylindrical Li-ion cells considering the influences of CTR, anisotropic heat transfer and the circumferentially-varying convective heat transfer coefficient (CHTC) was proposed. In this paper, regardless of number of the layers in cylindrical Li-ion cell, the unknown coefficients for the temperature field of central layer are obtained by solving (M + 1) algebraic equations. The integral constants in the analytical expression of the temperature field for other stratified zones were calculated straightforward based on the recursive relations. This approach contrasts with the method that directly solve for the coefficients of each layer. Therefore, the method presented in this paper has higher computational efficiency. The conclusions revealed that: (1) the proposed series solution converges rapidly, requiring fewer than 10 terms; (2) ignoring the CTR can result in a temperature difference of 14.91 degrees C (26.37%) in the cylindrical Li-ion cells. However, the temperature distribution in the outermost subzone of cylindrical Li-ion cells is not affected by CTR; (3) the maximum difference between the analytical solution and the finite element numerical solution is less than 0.1%; (4) the 5.9-fold increase in the Re value leads to a 4.26-fold increase of the sensitivity value and CTRs have a negligible effect on the temperature sensitivity at different radii, with a maximum difference of only 3%. It is expected to provide some suggestions for the structural optimization inside the large cylindrical Li-ion cells under low C-rate discharge.