Research on New Equalization Strategy for Series-connected Battery Strings Based on SOC

Authors

Jianlong Huang, Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Jiangnan University,Wuxi 214122, China;
Tinglong Pan, Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Jiangnan University,Wuxi 214122, China;
Dinghui Wu, Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Jiangnan University,Wuxi 214122, China;

Abstract

Abstract: The adjacent cells comparing strategy has a low energy transfer efficiency, and the MAX/MIN value strategy has a slow equalization speed. Then, a new equalization strategy was proposed to overcome above disadvantages, and the uniform of the SOC of the battery strings was used as the equalization goal in this strategy. The strategy used the estimation of the average balanced SOC as a reference, and controlled the switch states and the energy transfer direction of each equalizer, according to the energy distribution of the entire battery strings. With this strategy the unnecessary energy loss during energy transfer was reduced and the equalization speed was speeded up. The simulation model was built with MATLAB, and simulation results were compared with the traditional adjacent cells comparing strategy and the MAX/MIN value strategy. The effectiveness of the proposed equalization strategy was verified.

Recommended Citation

Huang, Jianlong; Pan, Tinglong; and Wu, Dinghui (2020) "Research on New Equalization Strategy for Series-connected Battery Strings Based on SOC," Journal of System Simulation: Vol. 29: Iss. 4, Article 17.
DOI: 10.16182/j.issn1004731x.joss.201704017
Available at: https://dc-china-simulation.researchcommons.org/journal/vol29/iss4/17

First Page

832

Revised Date

2016-10-16

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201704017

Last Page

839

CLC

TP391.9

Recommended Citation

Huang Jianlong, Pan Tinglong, Wu Dinghui. Research on New Equalization Strategy for Series-connected Battery Strings Based on SOC[J]. Journal of System Simulation, 2017, 29(4): 832-839.

DOI

10.16182/j.issn1004731x.joss.201704017