ProQuest
Abstract/Details

Tabular Approach to Open Circuit Voltage Modeling in Lithium-Ion Batteries

Devabattini, Bharath Chandra.   University of Windsor (Canada) ProQuest Dissertations Publishing,  2022. 29394068.

Abstract (summary)

Battery management systems depend on open circuit voltage (OCV) characterizationfor state of charge (SOC) estimation in real-time. The traditional approach to OCVSOC characterization involves collecting OCV-SOC data from sample battery cellsand then fitting a polynomial model to this data. The parameters of these polynomialmodels are known as the OCV-parameters, or OCV-SOC parameters, in batterymanagement systems and are used for real-time SOC estimation. Even though thetraditional OCV-SOC characterization approaches are able to abstract the OCV-SOCbehavior of a battery in a few parameters, storage, and processing of these parametersonline demand significant memory in a practical battery management system. It isalso possible that these parameters need to be rounded before storage due to memoryconstraints in computationally restrictive applications. In this paper, several existingOCV-SOC parameters are compared in terms of their memory requirements andaccuracy losses due to rounding. Then, a tabularized OCV-SOC model is presentedas an alternative to polynomial models. Three different approaches are presented toconvert traditional high-precision OCV-SOC curves into tabular OCV-SOC models.It is shown that the proposed tabular OCV-SOC model requires significantly lessmemory and shows little sensitivity to rounding.

Indexing (details)


Subject
Electrical engineering;
Energy
Classification
0544: Electrical engineering
0791: Energy
Identifier / keyword
Lithium-ion Batteries; OCV Modeling; Tabular OCV Modeling
Title
Tabular Approach to Open Circuit Voltage Modeling in Lithium-Ion Batteries
Author
Devabattini, Bharath Chandra
Number of pages
52
Publication year
2022
Degree date
2022
School code
0115
Source
MAI 84/3(E), Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9798351478098
Advisor
Balasingam, Balakumar
Committee member
Mirhassani, Mitra; Lee, Chris
University/institution
University of Windsor (Canada)
Department
ELECTRICAL ENGINEERING
University location
Canada -- Ontario, CA
Degree
M.A.Sc.
Source type
Dissertation or Thesis
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
29394068
ProQuest document ID
2728412427
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
https://www.proquest.com/pqdtglobal/docview/2728412427/7FB55E05E5C14281PQ