DocumentCode
167954
Title
Fast Estimation of State of Charge for Lithium-Ion Battery
Author
Hung Cheng Chen ; Shuo Rong Chou ; Hong Chou Chen ; Shing Lih Wu ; Liang Rui Chen
fYear
2014
fDate
10-12 June 2014
Firstpage
284
Lastpage
287
Abstract
This paper proposes a fast measurement method to estimate the state of charge (SOC) of Li-ion battery based on AC impedance. The AC impedances of an 18650 lithium-ion battery related to various states of charge are measured firstly using a commercial AC impedance analyzer to form a database. Using the relationships between the state of charge and the AC impedance, the proposed method can obtain the battery state of charge quickly. To validate the accuracy of the proposed method, SOC 0%, 50%, and 100% are tested and compared in this paper. The results show that the error is 8.636%, 2.604%, and 0.6%, respectively.
Keywords
lithium; secondary cells; Li; SOC; commercial AC impedance analyzer; fast measurement method; lithium-ion battery; state of charge; Batteries; Battery charge measurement; Current measurement; Impedance; Impedance measurement; System-on-chip; Voltage measurement; AC impedance; Lithium-ion battery; State of charge;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer, Consumer and Control (IS3C), 2014 International Symposium on
Conference_Location
Taichung
Type
conf
DOI
10.1109/IS3C.2014.82
Filename
6845874
Link To Document