Research on Equalization Technology of Power Pack with Improved Buck-Boost Topology

DOI

10.2991/pntim-19.2019.15How to use a DOI?

Keywords

Equalization Circuit; Buck-boost Topology; State of Charge; Fuzzy Control; Equilibrium Accuracy

Abstract

Aiming at the problems of traditional active equalization circuit, such as long equalization time, slow equalization speed and low control precision, this paper proposes an improved Buck-Boost topology equalization circuit based on the traditional Buck-Boost topology. Layering the battery cells in series to achieve direct equalization between non-adjacent cells, improve equalization speed, and shorten equalization time. At the same time, the fuzzy controller is designed to control the equalization current through the on and off of the MOSFET, thereby further improving the accuracy of the equalization control. The simulation results show that the improved topology and the design of the fuzzy controller make the equalization time shorten by about 40% compared with the traditional structure, and the SOC curve fitting and distribution after the equalization are relatively concentrated to achieve the expected equalization effect.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Wang Qi
AU  - Wang Chen
AU  - Zhang Meng
AU  - Gao Tian
PY  - 2019/11
DA  - 2019/11
TI  - Research on Equalization Technology of Power Pack with Improved Buck-Boost Topology
BT  - Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)
PB  - Atlantis Press
SP  - 71
EP  - 75
SN  - 2589-4943
UR  - https://doi.org/10.2991/pntim-19.2019.15
DO  - 10.2991/pntim-19.2019.15
ID  - Qi2019/11
ER  -