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Individual Cell Voltage Equalizer for Lithium Ion Battery

Publisher : Proceedings of the 4th International Conference on Electrical Energy Systems, ICEES 2018

Year : 2018

Abstract : pNow a days, lithium-ion (Li-ion) battery is the primary choice for the Electric Vehicle's (EV) power supply. Energy density in lithium-ion battery is very high. In a battery pack, thousands of Li-ion cell are placed in series-parallel combination. Some issues like overcharging and undercharging are always associated with series connected battery. To overcome this problem, each cell voltage is equalized by using a non-dissipative technique. This paper describes the technique which equalizes the cell in very short time. The individual cell of a battery pack will be quickly, efficiently and simultaneously balanced by triggering the MOSFET (metal-oxide semiconductor field-effect transistor) associated with each cell. Using MATLAB/Simulink balancing circuit with equalization technique is modelled and outputs are produced with series connected 4 Li-ion battery cells. In order to interface the developed model in real time MicroAutoBoxII is used. © 2018 IEEE./p

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