Imperial College London
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Dr Billy Wu

Faculty of Engineering, Dyson School of Design Engineering

Reader in Electrochemical Design Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6385billy.wu Website

 
 
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Location

 

1M04Royal College of ScienceSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yang:2021:10.1038/s41598-021-84729-1,
author = {Yang, S and Zhou, S and Hua, Y and Zhou, X and Liu, X and Pan, Y and Ling, H and Wu, B},
doi = {10.1038/s41598-021-84729-1},
journal = {Scientific Reports},
pages = {1--15},
title = {A parameter adaptive method for state of charge estimation of lithium-ion batteries with an improved extended Kalman filter.},
url = {http://dx.doi.org/10.1038/s41598-021-84729-1},
volume = {11},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - An accurate state of charge (SOC) estimation in battery management systems (BMS) is of crucial importance to guarantee the safe and effective operation of automotive batteries. However, the BMS consistently suffers from inaccuracy of SOC estimation. Herein, we propose a SOC estimation approach with both high accuracy and robustness based on an improved extended Kalman filter (IEKF). An equivalent circuit model is established, and the simulated annealing-particle swarm optimization (SA-PSO) algorithm is used for offline parameter identification. Furthermore, improvements have been made with noise adaptation, a fading filter and a linear-nonlinear filtering based on the traditional EKF method, and rigorous mathematical proof has been carried out accordingly. To deal with model mismatch, online parameter identification is achieved by a dual Kalman filter. Finally, various experiments are performed to validate the proposed IEKF. Experimental results show that the IEKF algorithm can reduce the error to 2.94% under dynamic stress test conditions, and robustness analysis is verified with noise interference, hence demonstrating its practicability for extending to state estimation of battery packs applied in real-world operating conditions.
AU  - Yang,S
AU  - Zhou,S
AU  - Hua,Y
AU  - Zhou,X
AU  - Liu,X
AU  - Pan,Y
AU  - Ling,H
AU  - Wu,B
DO  - 10.1038/s41598-021-84729-1
EP  - 15
PY  - 2021///
SN  - 2045-2322
SP  - 1
TI  - A parameter adaptive method for state of charge estimation of lithium-ion batteries with an improved extended Kalman filter.
T2  - Scientific Reports
UR  - http://dx.doi.org/10.1038/s41598-021-84729-1
UR  - https://www.ncbi.nlm.nih.gov/pubmed/33707575
UR  - https://www.nature.com/articles/s41598-021-84729-1
UR  - http://hdl.handle.net/10044/1/87486
VL  - 11
ER  -
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