This paper proposed an analytical model which can calculate the effective thermal conductivity (ETC) of a spiral-wound Lithium-ion battery (Li-ion battery). It bases on a two-dimensional energy balance with both radial and spiral heat transfer, as well as internal thermal contact resistance (TCR) considered simultaneously and studies the influence of winding layers and winding tension on the ETC. Results show that the analytical data are in good agreement with the numerical results. With the winding layers decreased and the winding tension enhanced, the ETC of Li-ion battery increases gradually. The radial temperature in Li-ion battery is also investigated which demonstrates a relatively higher temperature when considering the internal TCR.

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radial temperature internal thermal contact resistance twodimensional energy balance spiralwound lithiumion battery effective thermal conductivity etc internal tcr radial and spiral heat transfer winding tension analytical model

Bo Shi,Yuanjing Qi,Han Zhang,Lili Yang,.Calculation Model of Effective Thermal Conductivity of a Spiral-wound Lithium Ion Battery. 27 (6),572–579.

Bo Shi, et al."Calculation Model of Effective Thermal Conductivity of a Spiral-wound Lithium Ion Battery" 27

Bo Shi,Yuanjing Qi,Han Zhang,Lili Yang,"Calculation Model of Effective Thermal Conductivity of a Spiral-wound Lithium Ion Battery"