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Optimal charging strategy design for lithium‐ion batteries considering minimization of temperature rise and energy loss
Author(s) -
Chen Zheng,
Shu Xing,
Xiao Renxin,
Yan Wensheng,
Liu Yonggang,
Shen Jiangwei
Publication year - 2019
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4560
Subject(s) - battery (electricity) , automotive engineering , power (physics) , lithium ion battery , operating temperature , electrical engineering , computer science , engineering , thermodynamics , physics
Summary Battery charging techniques are critical to enhance battery operation performance. Charging temperature rise, energy loss, and charging time are three key indicators to evaluate charging performance. It is imperative to decrease temperature rise and energy loss without extending the charging time during the charging process. To this end, an equivalent circuit electrical model, a power loss model, and a thermal model are built in this study for lithium‐ion batteries. Then, an integrated objective function is formulated to minimize energy loss and temperature increment during battery charging. To further validate the generality and feasibility of the proposed charging strategy, experiments are conducted with respect to different current, operating temperatures, battery types, and aging status. Comparison results demonstrate that the devised charging strategy is capable of achieving the intended effect under any operating temperature and with different aging status.