Analysis and control of charge and temperature imbalance within a lithium-ion battery pack

Donald J. Docimo, Hosam Kadry Fathy

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper presents insights into the tradeoffs that exist when balancing charge and temperature within a lithium-ion battery pack. Both charge imbalance and temperature imbalance can harm battery pack performance - the former limits the charge/discharge capabilities of the pack, and the latter is known to accelerate battery pack aging. The literature proposes the manipulation of balancing current, normally reserved for charge or voltage balancing, to additionally reduce temperature heterogeneity. The goal is to limit both charge and temperature imbalance simultaneously, as balancing one may increase imbalance of the other. A noticeable gap in the literature, one this paper seeks to address, is the lack of a more formal understanding of the tradeoffs between charge and temperature imbalance. This paper uses a formal framework to obtain insights regarding the cases of balancing neither charge nor temperature, balancing charge, and balancing temperature. This allows for the determination of different factors that describe how balancing one state impacts the other, as well as the discovery that temperature balancing can be improved through the control of the average pack current. A model predictive control scheme is used to determine balancing current and validate these insights for a variety of scenarios.

Original languageEnglish (US)
Article number8337096
Pages (from-to)1622-1635
Number of pages14
JournalIEEE Transactions on Control Systems Technology
Volume27
Issue number4
DOIs
StatePublished - Jul 1 2019

Fingerprint

Temperature
Lithium-ion batteries
Model predictive control
Aging of materials
Electric potential

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

@article{2c00bf44a1a84d99842698c10b999168,
title = "Analysis and control of charge and temperature imbalance within a lithium-ion battery pack",
abstract = "This paper presents insights into the tradeoffs that exist when balancing charge and temperature within a lithium-ion battery pack. Both charge imbalance and temperature imbalance can harm battery pack performance - the former limits the charge/discharge capabilities of the pack, and the latter is known to accelerate battery pack aging. The literature proposes the manipulation of balancing current, normally reserved for charge or voltage balancing, to additionally reduce temperature heterogeneity. The goal is to limit both charge and temperature imbalance simultaneously, as balancing one may increase imbalance of the other. A noticeable gap in the literature, one this paper seeks to address, is the lack of a more formal understanding of the tradeoffs between charge and temperature imbalance. This paper uses a formal framework to obtain insights regarding the cases of balancing neither charge nor temperature, balancing charge, and balancing temperature. This allows for the determination of different factors that describe how balancing one state impacts the other, as well as the discovery that temperature balancing can be improved through the control of the average pack current. A model predictive control scheme is used to determine balancing current and validate these insights for a variety of scenarios.",
author = "Docimo, {Donald J.} and Fathy, {Hosam Kadry}",
year = "2019",
month = "7",
day = "1",
doi = "10.1109/TCST.2018.2819966",
language = "English (US)",
volume = "27",
pages = "1622--1635",
journal = "IEEE Transactions on Control Systems Technology",
issn = "1063-6536",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "4",

}

Analysis and control of charge and temperature imbalance within a lithium-ion battery pack. / Docimo, Donald J.; Fathy, Hosam Kadry.

In: IEEE Transactions on Control Systems Technology, Vol. 27, No. 4, 8337096, 01.07.2019, p. 1622-1635.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Analysis and control of charge and temperature imbalance within a lithium-ion battery pack

AU - Docimo, Donald J.

AU - Fathy, Hosam Kadry

PY - 2019/7/1

Y1 - 2019/7/1

N2 - This paper presents insights into the tradeoffs that exist when balancing charge and temperature within a lithium-ion battery pack. Both charge imbalance and temperature imbalance can harm battery pack performance - the former limits the charge/discharge capabilities of the pack, and the latter is known to accelerate battery pack aging. The literature proposes the manipulation of balancing current, normally reserved for charge or voltage balancing, to additionally reduce temperature heterogeneity. The goal is to limit both charge and temperature imbalance simultaneously, as balancing one may increase imbalance of the other. A noticeable gap in the literature, one this paper seeks to address, is the lack of a more formal understanding of the tradeoffs between charge and temperature imbalance. This paper uses a formal framework to obtain insights regarding the cases of balancing neither charge nor temperature, balancing charge, and balancing temperature. This allows for the determination of different factors that describe how balancing one state impacts the other, as well as the discovery that temperature balancing can be improved through the control of the average pack current. A model predictive control scheme is used to determine balancing current and validate these insights for a variety of scenarios.

AB - This paper presents insights into the tradeoffs that exist when balancing charge and temperature within a lithium-ion battery pack. Both charge imbalance and temperature imbalance can harm battery pack performance - the former limits the charge/discharge capabilities of the pack, and the latter is known to accelerate battery pack aging. The literature proposes the manipulation of balancing current, normally reserved for charge or voltage balancing, to additionally reduce temperature heterogeneity. The goal is to limit both charge and temperature imbalance simultaneously, as balancing one may increase imbalance of the other. A noticeable gap in the literature, one this paper seeks to address, is the lack of a more formal understanding of the tradeoffs between charge and temperature imbalance. This paper uses a formal framework to obtain insights regarding the cases of balancing neither charge nor temperature, balancing charge, and balancing temperature. This allows for the determination of different factors that describe how balancing one state impacts the other, as well as the discovery that temperature balancing can be improved through the control of the average pack current. A model predictive control scheme is used to determine balancing current and validate these insights for a variety of scenarios.

UR - http://www.scopus.com/inward/record.url?scp=85048321712&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048321712&partnerID=8YFLogxK

U2 - 10.1109/TCST.2018.2819966

DO - 10.1109/TCST.2018.2819966

M3 - Article

AN - SCOPUS:85048321712

VL - 27

SP - 1622

EP - 1635

JO - IEEE Transactions on Control Systems Technology

JF - IEEE Transactions on Control Systems Technology

SN - 1063-6536

IS - 4

M1 - 8337096

ER -