TY - GEN
T1 - A novel grouping method for lithium-ion battery pack considering cell divergence
AU - Xiong, Rui
AU - Lv, Liang
AU - Mu, Hao
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/29
Y1 - 2017/12/29
N2 - The inconsistency between battery monomers are often ignored in the process of battery SOC (State of Charge) estimation, the usual approach is to consider a battery module as a whole, and to obtain the 'averaged SOC' by using the method of SOC estimation applied in one cell. In fact, because of the inconsistencies of battery capacity, the initial SOC, internal resistance and other parameters, there are some 'special batteries' existing in the battery module, which is easy to be over-charged or over-discharged. In this paper, two approaches are proposed for mitigating the effects of inconsistency, in order to reduce the initial inconsistency, a PFA (principal factor analysis) based screening and clustering method was presented for grouping optimization; to obtain more accurate SOC estimation results, a reliability analysis based SOC correction considering cell divergence was done.
AB - The inconsistency between battery monomers are often ignored in the process of battery SOC (State of Charge) estimation, the usual approach is to consider a battery module as a whole, and to obtain the 'averaged SOC' by using the method of SOC estimation applied in one cell. In fact, because of the inconsistencies of battery capacity, the initial SOC, internal resistance and other parameters, there are some 'special batteries' existing in the battery module, which is easy to be over-charged or over-discharged. In this paper, two approaches are proposed for mitigating the effects of inconsistency, in order to reduce the initial inconsistency, a PFA (principal factor analysis) based screening and clustering method was presented for grouping optimization; to obtain more accurate SOC estimation results, a reliability analysis based SOC correction considering cell divergence was done.
KW - Cell divergence
KW - PFA
KW - Reliability analysis
KW - SOC correction
UR - http://www.scopus.com/inward/record.url?scp=85050333168&partnerID=8YFLogxK
U2 - 10.1109/CAC.2017.8243716
DO - 10.1109/CAC.2017.8243716
M3 - Conference contribution
AN - SCOPUS:85050333168
T3 - Proceedings - 2017 Chinese Automation Congress, CAC 2017
SP - 5269
EP - 5273
BT - Proceedings - 2017 Chinese Automation Congress, CAC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 Chinese Automation Congress, CAC 2017
Y2 - 20 October 2017 through 22 October 2017
ER -
