A Novel Lithium Battery Equalization Circuit with Any Number of Inductors

Chusheng Lu, Longyun Kang, Xuan Luo, Jinqing Linghu and Hongye Lin
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Chusheng Lu: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China
Longyun Kang: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China
Xuan Luo: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China
Jinqing Linghu: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China
Hongye Lin: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China

Energies, 2019, vol. 12, issue 24, 1-14

Abstract: Even with the same voltage level, different types of battery packs have different requirements for the volume of the battery equalization circuit. However, most equalization circuits have the same problem: the volume of the equalization circuit is fixed once the voltage level of the battery pack is determined. In order to solve this problem, this paper proposes a novel lithium battery equalization circuit with any number of inductors (ECANI). It can select any number of inductors less than half the number of batteries, even when the voltage level of the battery pack is determined. Simulation and experiments are used to verify the performance of the equalization circuit. The current error and the average final voltage error in the experiment are 1.69% and 0.33% lower than those in the simulation, respectively. So the circuit can achieve equalization with good accuracy.

Keywords: lithium battery; equalization circuit; inductor; volume (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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