Lithium-Ion Battery Charge Equalization Algorithm for Electric Vehicle Applications

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

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

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
Article number7862204
Pages (from-to)2541-2549
Number of pages9
JournalIEEE Transactions on Industry Applications
Volume53
Issue number3
DOIs
Publication statusPublished - 1 May 2017
Externally publishedYes

Fingerprint

Electric vehicles
Life cycle
Monitoring
Equalizers
Explosions
Integrated circuits
Lithium-ion batteries
Controllers

Keywords

  • Charge equalization algorithm
  • charging and discharging lithium-ion battery
  • electric vehicle (EV)
  • lithium-ion battery
  • monitoring integrated circuit (IC)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Lithium-Ion Battery Charge Equalization Algorithm for Electric Vehicle Applications. / M A, Hannan; Hoque, Md Murshadul; Peng, Seow Eng; Uddin, M. Nasir.

In: IEEE Transactions on Industry Applications, Vol. 53, No. 3, 7862204, 01.05.2017, p. 2541-2549.

Research output: Contribution to journalArticle

M A, Hannan ; Hoque, Md Murshadul ; Peng, Seow Eng ; Uddin, M. Nasir. / Lithium-Ion Battery Charge Equalization Algorithm for Electric Vehicle Applications. In: IEEE Transactions on Industry Applications. 2017 ; Vol. 53, No. 3. pp. 2541-2549.
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