Battery module capacity fade model based on cell voltage inconsistency and probability distribution

Yulong Zhang; Jian Xu; Shichun Yang; Cheng Deng; Fei Chen; Fang Lei

doi:10.1177/1687814017730757

Battery module capacity fade model based on cell voltage inconsistency and probability distribution

Yulong Zhang
, Jian Xu
, Shichun Yang^*
, Cheng Deng
, Fei Chen
, Fang Lei

^*Corresponding author for this work

School of Transportation Science and Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Cell voltage inconsistency of battery module is correlated with cell capacity fading inconsistency caused by uneven temperature or improper charge/discharge rate, so it is essential to study on cell voltage inconsistency when establishing a battery module capacity fade model. An accelerated life experiment is conducted on 12-series (12S) LiMn₂O₄ battery. The evaluation index of the voltage inconsistency is given, and the evolution of the voltage of the 12S battery module is obtained. Furthermore, a model of capacity fade of this 12S battery is established based on cell voltage inconsistency, which is extended to any-series battery by means of probability distribution. Based on this extended model, the relationship between the number of cells and the life of the battery is obtained.

Original language	English
Pages (from-to)	1-13
Number of pages	13
Journal	Advances in Mechanical Engineering
Volume	9
Issue number	9
DOIs	https://doi.org/10.1177/1687814017730757
State	Published - 1 Sep 2017

Keywords

Battery
accelerated life experiment
capacity fade model
cell voltage inconsistency
probability distribution

Access to Document

10.1177/1687814017730757

Cite this

@article{72cc53f8071240b79b5ed93bc93b688b,

title = "Battery module capacity fade model based on cell voltage inconsistency and probability distribution",

abstract = "Cell voltage inconsistency of battery module is correlated with cell capacity fading inconsistency caused by uneven temperature or improper charge/discharge rate, so it is essential to study on cell voltage inconsistency when establishing a battery module capacity fade model. An accelerated life experiment is conducted on 12-series (12S) LiMn2O4 battery. The evaluation index of the voltage inconsistency is given, and the evolution of the voltage of the 12S battery module is obtained. Furthermore, a model of capacity fade of this 12S battery is established based on cell voltage inconsistency, which is extended to any-series battery by means of probability distribution. Based on this extended model, the relationship between the number of cells and the life of the battery is obtained.",

keywords = "Battery, accelerated life experiment, capacity fade model, cell voltage inconsistency, probability distribution",

author = "Yulong Zhang and Jian Xu and Shichun Yang and Cheng Deng and Fei Chen and Fang Lei",

note = "Publisher Copyright: {\textcopyright} SAGE Publications Ltd 2017.",

year = "2017",

month = sep,

day = "1",

doi = "10.1177/1687814017730757",

language = "英语",

volume = "9",

pages = "1--13",

journal = "Advances in Mechanical Engineering",

issn = "1687-8132",

publisher = "SAGE Publications Inc.",

number = "9",

}

TY - JOUR

T1 - Battery module capacity fade model based on cell voltage inconsistency and probability distribution

AU - Zhang, Yulong

AU - Xu, Jian

AU - Yang, Shichun

AU - Deng, Cheng

AU - Chen, Fei

AU - Lei, Fang

N1 - Publisher Copyright: © SAGE Publications Ltd 2017.

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Cell voltage inconsistency of battery module is correlated with cell capacity fading inconsistency caused by uneven temperature or improper charge/discharge rate, so it is essential to study on cell voltage inconsistency when establishing a battery module capacity fade model. An accelerated life experiment is conducted on 12-series (12S) LiMn2O4 battery. The evaluation index of the voltage inconsistency is given, and the evolution of the voltage of the 12S battery module is obtained. Furthermore, a model of capacity fade of this 12S battery is established based on cell voltage inconsistency, which is extended to any-series battery by means of probability distribution. Based on this extended model, the relationship between the number of cells and the life of the battery is obtained.

AB - Cell voltage inconsistency of battery module is correlated with cell capacity fading inconsistency caused by uneven temperature or improper charge/discharge rate, so it is essential to study on cell voltage inconsistency when establishing a battery module capacity fade model. An accelerated life experiment is conducted on 12-series (12S) LiMn2O4 battery. The evaluation index of the voltage inconsistency is given, and the evolution of the voltage of the 12S battery module is obtained. Furthermore, a model of capacity fade of this 12S battery is established based on cell voltage inconsistency, which is extended to any-series battery by means of probability distribution. Based on this extended model, the relationship between the number of cells and the life of the battery is obtained.

KW - Battery

KW - accelerated life experiment

KW - capacity fade model

KW - cell voltage inconsistency

KW - probability distribution

UR - https://www.scopus.com/pages/publications/85030238124

U2 - 10.1177/1687814017730757

DO - 10.1177/1687814017730757

M3 - 文章

AN - SCOPUS:85030238124

SN - 1687-8132

VL - 9

SP - 1

EP - 13

JO - Advances in Mechanical Engineering

JF - Advances in Mechanical Engineering

IS - 9

ER -

Battery module capacity fade model based on cell voltage inconsistency and probability distribution

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this