DocumentCode
16147
Title
An Equivalent Circuit Model With Variable Effective Capacity for 
Batteries
Author
Blanco, Cristian ; Sanchez, L. ; Gonzalez, M. ; Anton, Juan C. ; Garcia, Virgile ; Viera, Juan C.
Author_Institution
Dept. of Electr. & Electron. Eng., Univ. of Oviedo, Gijon, Spain
Volume
63
Issue
8
fYear
2014
fDate
Oct. 2014
Firstpage
3592
Lastpage
3599
Abstract
A new approach to equivalent circuit models for LiFePO4 batteries is presented in this paper. The proposed battery model is a semi-physical nonlinear dynamic model with variable effective capacity. Fuzzy logic has been used to capture the nonlinear behavior of the battery in combination with continuous-time differential equations. Fuzzy logic blocks are embedded in a state-space dynamic model as nonlinear constructive blocks. The proposed model has been validated for three different LiFePO4 batteries. The model provides an intuitive physical analogy between charging LiFePO4 batteries and filling a semi-rigid tank, which is useful for explanatory purposes.
Keywords
differential equations; equivalent circuits; fuzzy logic; iron compounds; lithium compounds; nonlinear dynamical systems; secondary cells; state-space methods; LiFePO4; batteries; continuous-time differential equations; equivalent circuit model; fuzzy logic blocks; nonlinear constructive blocks; semiphysical nonlinear dynamic model; semirigid tank; state-space dynamic model; variable effective capacity; Batteries; Battery charge measurement; Discharges (electric); Electronic countermeasures; Equivalent circuits; Integrated circuit modeling; Mathematical model; $hbox{LiFePO}_{4}$ batteries; Effective capacity; modeling;
fLanguage
English
Journal_Title
Vehicular Technology, IEEE Transactions on
Publisher
ieee
ISSN
0018-9545
Type
jour
DOI
10.1109/TVT.2014.2309394
Filename
6754194
Link To Document