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International Journal of Automotive Technology > Volume 26(1); 2025 > Article
International Journal of Automotive Technology 2025;26(1): 63-71.
doi: https://doi.org/10.1007/s12239-024-00148-x
Effect of Battery Pack Stiffness Depending on Battery Cell Types in Cell-to-Pack Technology
Jong Wook Lee
Department of Mechatronics Engineering, Korea University of Technology and Education, Cheonan-Si 31253, Korea
PDF Links Corresponding Author.  Jong Wook Lee , Email. jwl@koreatech.ac.kr
Received: March 18, 2024; Revised: July 28, 2024   Accepted: August 8, 2024.  Published online: September 11, 2024.
ABSTRACT
High-voltage batteries used in electric vehicles use hundreds or thousands of battery cells. Because a large number of battery cells are used, installing each one into a battery pack causes many difficulties in production. Therefore, traditionally, multiple battery cells are composed of several battery modules and then assembled into a battery pack. However, recently, Cell-to-Pack (CTP) technology that configures battery cells directly into a battery pack is being developed to increase energy density of a battery pack. This is because parts needed for battery modules can be removed, which can have various advantages. Because modules are eliminated in CTP technology, the method of installing battery cells in a battery pack will also be modified and the effect battery cells have on the stiffness of a battery pack will also change. In this study, the differences in stiffness of battery packs based on CTP technology developed for various battery cell types are analyzed. In particular, battery packs with CTP technology are generated based on pouch-type battery cells and prismatic battery cells and how each type of battery cell changes the stiffness of a battery pack is analyzed.
Key Words: Battery pack · Battery module · Pouch-type battery cell · Prismatic battery cell · Cell-to-Pack technology
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