Research Repository

See what's under the surface

A comprehensive working state monitoring method for power battery packs considering state of balance and aging correction.

Wang, Shun-Li; Fernandez, Carlos; Zou, Chuan-Yun; Yu, Chun-Mei; Chen, Lei; Zhang, Li

Authors

Shun-Li Wang

Carlos Fernandez

Chuan-Yun Zou

Chun-Mei Yu

Lei Chen

Li Zhang

Abstract

A comprehensive working state monitoring method is proposed to protect the power lithium-ion battery packs, implying accurate estimation effect but using minimal time demand of self-learning treatment. A novel state of charge estimation model is conducted by using the improved unscented Kalman filtering method, in which the state of balance and aging process correction is considered, guaranteeing the powered battery supply reliability effectively. In order to realize the equilibrium state evaluation among the internal battery cells, the numerical description and evaluation is putting forward, in which the improved variation coefficient is introduced into the iterative calculation process. The intermittent measurement and real-time calibration calculation process is applied to characterize the capacity change of the battery pack towards the cycling maintenance number, according to which the aging process impact correction can be investigated. This approach is different to the traditional methods by considering the multi-input parameters with real-time correction, in which every calculation step is investigated to realize the working state estimation by using the synthesis algorithm. The state of charge estimation error is 1.83%, providing the technical support for the reliable power supply application of the lithium-ion battery packs.

Journal Article Type Article
Publication Date Mar 15, 2019
Journal Energy
Print ISSN 0360-5442
Electronic ISSN 1873-6785
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 171
Pages 444-455
Institution Citation WANG, S.-L., FERNANDEZ, C., ZOU, C.-Y., YU, C.-M., CHEN, L. and ZHANG, L. 2019. A comprehensive working state monitoring method for power battery packs considering state of balance and aging correction. Energy [online], 171, pages 444-455. Available from: https://doi.org/10.1016/j.energy.2019.01.020
DOI https://doi.org/10.1016/j.energy.2019.01.020
Keywords Power battery pack; Working state monitoring; Unscented Kalman filter; State of balance; Aging correction

Files

This file is under embargo until Jan 9, 2020 due to copyright reasons.

Contact publications@rgu.ac.uk to request a copy for personal use.



Downloadable Citations