Lithium-Ion Battery Charge Equalization Algorithm for Electric Vehicle Applications

Mohammad Abdul Hannan, Md Murshadul Hoque, Seow Eng Peng, M. Nasir Uddin

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

© 2017 IEEE. The lithium-ion batteries are commonly used in electric vehicle (EV) applications due to their better performances as compared with other batteries. However, lithium-ion battery has some drawbacks such as the overcharged cell which has a risk of explosion, the undercharged cell eventually reduces the life cycle of the battery, and unbalanced charge in series battery gradually reduces overall charge capacity. This paper presents a battery charge equalization algorithm for lithium-ion battery in EV applications to enhance the battery's performance, life cycle, and safety. The algorithm is implemented in series-connected battery cells of 15.5 Ah and 3.7 V nominal each using a battery monitoring integrated circuit for monitoring and equalization of an 8-cell battery pack using a bidirectional flyback dc-dc converter as the channel for charging and discharging of the battery cell. The obtained results show that the developed charge equalization controller algorithm performs well in equalizing both undercharged and overcharged cells, and equalizes the cell within the safety operation range of 3.81 V. To validate the charge equalizer performance, the proposed algorithm outperforms with other studies in terms of balancing, equalization speed, low power loss, and efficiency. Thus, the proposed battery charge equalization algorithm proves an effective and automated system to modularize the battery charge that improves the safety and life cycle of battery.
Original languageEnglish
Pages (from-to)2541-2549
Number of pages2286
JournalIEEE Transactions on Industry Applications
DOIs
Publication statusPublished - 01 May 2017

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electric vehicle
Electric vehicles
lithium
ion
Life cycle
Monitoring
Equalizers
Explosions
Integrated circuits
life cycle
battery
Lithium-ion batteries
safety
Controllers
monitoring

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

Cite this

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abstract = "{\circledC} 2017 IEEE. The lithium-ion batteries are commonly used in electric vehicle (EV) applications due to their better performances as compared with other batteries. However, lithium-ion battery has some drawbacks such as the overcharged cell which has a risk of explosion, the undercharged cell eventually reduces the life cycle of the battery, and unbalanced charge in series battery gradually reduces overall charge capacity. This paper presents a battery charge equalization algorithm for lithium-ion battery in EV applications to enhance the battery's performance, life cycle, and safety. The algorithm is implemented in series-connected battery cells of 15.5 Ah and 3.7 V nominal each using a battery monitoring integrated circuit for monitoring and equalization of an 8-cell battery pack using a bidirectional flyback dc-dc converter as the channel for charging and discharging of the battery cell. The obtained results show that the developed charge equalization controller algorithm performs well in equalizing both undercharged and overcharged cells, and equalizes the cell within the safety operation range of 3.81 V. To validate the charge equalizer performance, the proposed algorithm outperforms with other studies in terms of balancing, equalization speed, low power loss, and efficiency. Thus, the proposed battery charge equalization algorithm proves an effective and automated system to modularize the battery charge that improves the safety and life cycle of battery.",
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Lithium-Ion Battery Charge Equalization Algorithm for Electric Vehicle Applications. / Hannan, Mohammad Abdul; Hoque, Md Murshadul; Peng, Seow Eng; Uddin, M. Nasir.

In: IEEE Transactions on Industry Applications, 01.05.2017, p. 2541-2549.

Research output: Contribution to journalArticle

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