Study on Adaptive Cycle Life Extension Method of Li-Ion Battery Based on Differential Thermal Voltammetry Parameter Decoupling

Zhixuan Wu, Guorong Zhu, Qian Wang, Shengjie Yang, Jing V. Wang and Jianqiang Kang
Additional contact information
Zhixuan Wu: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Guorong Zhu: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Qian Wang: Department of Energy Technology, University Aalborg, 9220 Aalborg, Denmark
Shengjie Yang: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Jing V. Wang: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Jianqiang Kang: Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China

Energies, 2021, vol. 14, issue 19, 1-15

Abstract: Battery aging leads to reduction in a battery’s cycle life, which restricts the development of energy storage technology. At present, the state of health (SOH) assessment technology, which is used to indicate the battery cycle life, has been widely studied. This paper tries to find a way to adjust the battery management system adaptively in order to prolong the battery cycle life with the change of SOH. In this paper, an improved Galvanostatic Intermittent Titration Technique (GITT) method is proposed to decouple the terminal voltage into overpotential (induced by total internal resistance) and stoichiometric drift (caused by battery aging, indicated by OCV). Based on improved GITT, the open circuit voltage-temperature change ( OCV-dT/dV ) characteristics of SOH are described more accurately. With such an accurate description of SOH change, the adaptive method to change the discharge and charge cut-off voltage is obtained, whose application can prolong battery cycle life. Experiments verify that, in the middle of a battery’s life-cycle, the adaptive method to change the discharge and charge cut-off voltage can effectively improve the cycle life of the battery. This method can be applied during the period of preventive maintenance in battery storage systems.

Keywords: li-ion battery; differential thermal voltammetry; stoichiometric drift; DTV adaptive (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/19/6239/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/19/6239/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:19:p:6239-:d:647605

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().