Advanced search
1 file | 2.51 MB

An efficient equalizing method for lithium-ion batteries based on coupled inductor balancing

(2019) ELECTRONICS. 8(2).
Author
Organization
Abstract
This article developed a coupled inductor balancing method to overcome cell voltage variation among cells in series, for Lithium Ion (Li-ion) batteries in Electrical Vehicles (EV). For an "eight cells in series" example, the developed balance circuit has four inductors, one magnetic circuit with one winding per two cells, and one control switch per cell, as compared to the traditional inductor-based equalizer that needs N-1 inductors and magnetic circuits for N number of cells and more switches. Therefore, ultimately, a more efficient, cost-effective circuit and low bill of materials (BOM) will be built up. All switches are logic-level N-Channel metal-oxide-semiconductor field-effect transistors (MOSFETs) and they are controlled by a pair of complementary signals in a synchronous trigger pattern. In the proposed topology, less components and fast equalization are achieved compared to the conventional battery management system (BMS) technique for electrical vehicles based on the inductor balancing method. This scheme is suitable for fast equalization due to the inductor-based balancing method. The inductors are made with a well-chosen winding ratio and all are coupled with one magnetic core with an air gap. Theoretical derivation of the proposed circuit was well-presented, and numerical simulation relevant to the electrochemical storage devices was conducted to show the validity of the proposed balance circuit. A complete balance circuit was built to verify that the proposed circuit could resolve imbalance problems which existed inside battery modules
Keywords
BMS, BOM, Coupled inductor balancing, EV, Li-ion, MOSFET

Downloads

  • electronics-08-00136-v2.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 2.51 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Farzan Moghaddam, Ali, and Alex Van den Bossche. 2019. “An Efficient Equalizing Method for Lithium-ion Batteries Based on Coupled Inductor Balancing.” Electronics 8 (2).
APA
Farzan Moghaddam, A., & Van den Bossche, A. (2019). An efficient equalizing method for lithium-ion batteries based on coupled inductor balancing. ELECTRONICS, 8(2).
Vancouver
1.
Farzan Moghaddam A, Van den Bossche A. An efficient equalizing method for lithium-ion batteries based on coupled inductor balancing. ELECTRONICS. MDPI AG; 2019;8(2).
MLA
Farzan Moghaddam, Ali, and Alex Van den Bossche. “An Efficient Equalizing Method for Lithium-ion Batteries Based on Coupled Inductor Balancing.” ELECTRONICS 8.2 (2019): n. pag. Print.
@article{8598811,
  abstract     = {This article developed a coupled inductor balancing method to overcome cell voltage variation among cells in series, for Lithium Ion (Li-ion) batteries in Electrical Vehicles (EV). For an {\textacutedbl}eight cells in series{\textacutedbl} example, the developed balance circuit has four inductors, one magnetic circuit with one winding per two cells, and one control switch per cell, as compared to the traditional inductor-based equalizer that needs N-1 inductors and magnetic circuits for N number of cells and more switches. Therefore, ultimately, a more efficient, cost-effective circuit and low bill of materials (BOM) will be built up. All switches are logic-level N-Channel metal-oxide-semiconductor field-effect transistors (MOSFETs) and they are controlled by a pair of complementary signals in a synchronous trigger pattern. In the proposed topology, less components and fast equalization are achieved compared to the conventional battery management system (BMS) technique for electrical vehicles based on the inductor balancing method. This scheme is suitable for fast equalization due to the inductor-based balancing method. The inductors are made with a well-chosen winding ratio and all are coupled with one magnetic core with an air gap. Theoretical derivation of the proposed circuit was well-presented, and numerical simulation relevant to the electrochemical storage devices was conducted to show the validity of the proposed balance circuit. A complete balance circuit was built to verify that the proposed circuit could resolve imbalance problems which existed inside battery modules},
  articleno    = {136},
  author       = {Farzan Moghaddam, Ali and Van den Bossche, Alex},
  issn         = {2079-9292},
  journal      = {ELECTRONICS},
  language     = {eng},
  number       = {2},
  pages        = {12},
  publisher    = {MDPI AG},
  title        = {An efficient equalizing method for lithium-ion batteries based on coupled inductor balancing},
  url          = {http://dx.doi.org/10.3390/electronics8020136},
  volume       = {8},
  year         = {2019},
}

Altmetric
View in Altmetric