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Title: Systems and methods for direct estimation of battery parameters using only charge/discharge curves

Abstract

Electrochemical models for the lithium-ion battery are useful in predicting and controlling its performance. The values of the parameters in these models are vital to their accuracy. However, not all parameters can be measured precisely, especially when destructive methods are prohibited. In some embodiments of the present disclosure, a parameter estimation approach is used to estimate the open circuit potential of the positive electrode (Up) using piecewise linear approximation together with all the other parameters of a single particle model. Up and 10 more parameters may be estimated from a single discharge curve without knowledge of the electrode chemistry using a technique such as a genetic algorithm. Different case studies were presented for estimating Up with different types of parameters of the battery model. The estimated parameters were then validated by comparing simulations at different discharge rates with experimental data.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1986662
Patent Number(s):
11462929
Application Number:
15/725,192
Assignee:
University of Washington (Seattle, WA)
DOE Contract Number:  
AR0000275
Resource Type:
Patent
Resource Relation:
Patent File Date: 10/04/2017
Country of Publication:
United States
Language:
English

Citation Formats

Qi, Yanbo, Kolluri, Suryanarayana, Subramanian, Venkat, Chen, Sung-Yuan, and Dawson-Elli, Neal. Systems and methods for direct estimation of battery parameters using only charge/discharge curves. United States: N. p., 2022. Web.
Qi, Yanbo, Kolluri, Suryanarayana, Subramanian, Venkat, Chen, Sung-Yuan, & Dawson-Elli, Neal. Systems and methods for direct estimation of battery parameters using only charge/discharge curves. United States.
Qi, Yanbo, Kolluri, Suryanarayana, Subramanian, Venkat, Chen, Sung-Yuan, and Dawson-Elli, Neal. Tue . "Systems and methods for direct estimation of battery parameters using only charge/discharge curves". United States. https://www.osti.gov/servlets/purl/1986662.
@article{osti_1986662,
title = {Systems and methods for direct estimation of battery parameters using only charge/discharge curves},
author = {Qi, Yanbo and Kolluri, Suryanarayana and Subramanian, Venkat and Chen, Sung-Yuan and Dawson-Elli, Neal},
abstractNote = {Electrochemical models for the lithium-ion battery are useful in predicting and controlling its performance. The values of the parameters in these models are vital to their accuracy. However, not all parameters can be measured precisely, especially when destructive methods are prohibited. In some embodiments of the present disclosure, a parameter estimation approach is used to estimate the open circuit potential of the positive electrode (Up) using piecewise linear approximation together with all the other parameters of a single particle model. Up and 10 more parameters may be estimated from a single discharge curve without knowledge of the electrode chemistry using a technique such as a genetic algorithm. Different case studies were presented for estimating Up with different types of parameters of the battery model. The estimated parameters were then validated by comparing simulations at different discharge rates with experimental data.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {10}
}

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