TY - GEN
T1 - Contactless Active Cell Balancing Method for Battery Management Systems
AU - Eashwar, Reddy S.
AU - Kumar, Rajesh
AU - Singh, Vinay Prathap
AU - Mathur, Akhilesh
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/12/10
Y1 - 2020/12/10
N2 - Nowadays lithium-ion battery is one of the most dependable portable sources of energy. But, state of charge (SOC) imbalance is unavoidable problem in series-connected lithium-ion cells. Therefore, a perfect balancing mechanism is required for battery management systems (BMSs) to eliminate the problems associated with SOC imbalance. It improves life and eliminates the capacity decreasing problem of the battery packs. In this paper, a new active balancing approach based on wireless power transfer technique is proposed. The proposed method is safe, easy to implement and control, lightweight, and needs less space when compared to the multi-winding transformer. A modified Royer's oscillator is used as inverter to convert DC to high frequency AC. As per the tank circuit parameter values used in experiment the circuit is resonating at 144 KHz. Working of the wireless power transfer (WPT) circuit for cell balancing is explained clearly, and then mathematical modelling, energy flow and control of two-cell balancing topology are analysed. The proposed circuit is simulated and supported with results.
AB - Nowadays lithium-ion battery is one of the most dependable portable sources of energy. But, state of charge (SOC) imbalance is unavoidable problem in series-connected lithium-ion cells. Therefore, a perfect balancing mechanism is required for battery management systems (BMSs) to eliminate the problems associated with SOC imbalance. It improves life and eliminates the capacity decreasing problem of the battery packs. In this paper, a new active balancing approach based on wireless power transfer technique is proposed. The proposed method is safe, easy to implement and control, lightweight, and needs less space when compared to the multi-winding transformer. A modified Royer's oscillator is used as inverter to convert DC to high frequency AC. As per the tank circuit parameter values used in experiment the circuit is resonating at 144 KHz. Working of the wireless power transfer (WPT) circuit for cell balancing is explained clearly, and then mathematical modelling, energy flow and control of two-cell balancing topology are analysed. The proposed circuit is simulated and supported with results.
KW - active cell balancing
KW - BMS
KW - resonant coupling
KW - wireless power transfer (WPT)
UR - http://www.scopus.com/inward/record.url?scp=85101168269&partnerID=8YFLogxK
U2 - 10.1109/ICPECTS49113.2020.9337039
DO - 10.1109/ICPECTS49113.2020.9337039
M3 - Conference contribution
AN - SCOPUS:85101168269
T3 - ICPECTS 2020 - IEEE 2nd International Conference on Power, Energy, Control and Transmission Systems, Proceedings
BT - ICPECTS 2020 - IEEE 2nd International Conference on Power, Energy, Control and Transmission Systems, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd IEEE International Conference on Power, Energy, Control and Transmission Systems, ICPECTS 2020
Y2 - 10 December 2020 through 11 December 2020
ER -
