The Frontiers of Society, Science and Technology, 2024, 6(6); doi: 10.25236/FSST.2024.060613.
Hongliang Li
Automotive and Aviation Institute, Hubei Communications Technical College, Wuhan, 430202, Hubei, China
Internal resistance can be thought of as a measure of the “quality” of a battery cell. A low internal resistance indicates that the battery cell is able to deliver a large current with minimal voltage drop, while a high internal resistance indicates that the battery cell is less able to deliver a large current and experiences a larger voltage drop. Internal resistance can be affected by various factors, including: the type and composition of the electrodes, the temperature of the cell, and the state of charge of the cell. It can also vary depending on the discharge rate, with higher discharge rates typically resulting in a higher internal resistance. Calculating the internal resistance of a battery cell can be useful for determining the performance of the cell and identifying any issues that may affect its performance. This article takes the Panasonic NCR18650B battery cell as an example, proposes a circuit model and calculation formula for calculating the internal resistance of the battery cell, and the calculation results are reliable, providing an effective approach for the calculation and research of battery internal resistance.
battery cell, internal resistance, circuit model, calculation method
Hongliang Li. Research on Calculating the Internal Resistance of Battery Cell. The Frontiers of Society, Science and Technology (2024), Vol. 6, Issue 6: 81-85. https://doi.org/10.25236/FSST.2024.060613.
[1] Daniel J. Noelle, Meng Wang, Anh V. Le, Yang Shi, Yu Qiao, Internal resistance and polarization dynamics of lithium-ion batteries upon internal shorting, Applied Energy, 2018: 796-808.
[2] Xiaoming Wang, Yongqi Xie, Rodney Day, Hongwei Wu, Zhongliang Hu, Jianqin Zhu, Dongsheng Wen, Performance analysis of a novel thermal management system with composite phase change material for a lithium-ion battery pack, Energy, 2018: 154-168.
[3] Rajath Kantharaj, Amy M. Marconnet, Heat Generation and Thermal Transport in Lithium-Ion Batteries: A Scale-Bridging Perspective, Nanoscale and Microscale Thermophysical Engineering, 2019(2): 128-156.
[4] Carlos Pastor-Fernández, Energy Storage Systems–Course Notes, The University of Warwick, 2022.
[5] Panasonic NCR18650B lithium-ion battery cell datasheet.