A Simulation Study of Power Battery Grouping Equalization System

Authors

Zhu Hao, Hunan University, School of Mechanical and Transportation Engineering, Changsha 410000, China;
Daxing Xia, Hunan University, School of Mechanical and Transportation Engineering, Changsha 410000, China;

Abstract

Abstract: A grouping equalizer scheme of lithium-ion battery pack is proposed based on cuk chopper circuit and flyback transformer balanced circuits. The grouping equalizer process could be divided into two stages: balance of cell sub-group and balance between cell sub-group. Cuk chopper circuit is used in the balance of cell sub-group for transferring the energy between adjacent cells. Bidirectional flyback transformer is employed in the balance between cell sub-group. Any optional sub-group can be balanced and the balanced energy can be transferred bidirectionally. Finally, a balanced circuit model is created in Matlab/Simulink for simulation. Simulation results show that the grouping equilibrium system of battery pack could efficiently balance while charging and discharging the battery pack. The grouping equilibrium system not only avoids the shortcomings when balancing individually, but also increases the charge and discharge capacity of the entire battery pack.

Recommended Citation

Hao, Zhu and Xia, Daxing (2019) "A Simulation Study of Power Battery Grouping Equalization System," Journal of System Simulation: Vol. 30: Iss. 9, Article 33.
DOI: 10.16182/j.issn1004731x.joss.201809033
Available at: https://dc-china-simulation.researchcommons.org/journal/vol30/iss9/33

First Page

3484

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201809033

Last Page

3492

CLC

TP391.9

Recommended Citation

Zhu Hao, Xia Daxing. A Simulation Study of Power Battery Grouping Equalization System[J]. Journal of System Simulation, 2018, 30(9): 3484-3492.

DOI

10.16182/j.issn1004731x.joss.201809033