Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (2): 697-703.doi: 10.19799/j.cnki.2095-4239.2021.0450

• Energy Storage Test: Methods and Evaluation • Previous Articles     Next Articles

Review on modeling of lithium-ion battery

Jianlin LI1(), Heng XIAO2   

  1. 1.North China University of Technology, Beijing 100192, China
    2.Shanghai University of Electric Power, Shanghai 200090, China
  • Received:2021-08-30 Revised:2021-10-13 Online:2022-02-05 Published:2022-02-08
  • Contact: Jianlin LI E-mail:dkyljl@163.com

Abstract:

The latest research on lithium-ion battery modeling technology for large-scale energy storage in China is described briefly. Because energy storage technology can stabilize fluctuations and improve power quality, the energy storage demand in power grids has increased yearly. The large-scale energy storage system comprises a lithium battery pack, bidirectional inverter, and battery energy management system. Assuming the bidirectional inverter and battery energy management system have ready-made models, developing an accurate and reliable lithium-ion battery model has become the focus of applying large-scale energy storage engineering. This study describes current popular battery modeling methods. The electrochemical model is constructed by simulating the battery electrochemical reaction process. Although the accuracy is high, the model is complex; therefore, it should be properly simplified for use. It is typically used for battery principle analysis. Different equivalent circuit models are designed using different simulation degrees of the battery's external characteristics. Although we do not pay attention to simulating the principle, it is more suitable for application in engineering practice. The neural network model is constructed by studying the relationship between battery input and output, but its accuracy requires high quantity and quality data. Finally, to better realize the application in power systems, the reaction principle of lithium-ion batteries should be studied more deeply and described quantitatively to improve the application ability of the model in various scenarios.

Key words: energy storage, lithium-ion battery, modeling

CLC Number: