Comparison of passive cell balancing and active cell balancing for automotive batteries

This paper presents a quantitative performance analysis of a conventional passive cell balancing method and a proposed active cell balancing method for automotive batteries. The proposed active cell balancing method was designed to perform continuous cell balancing during charge and discharge with high balancing current. An experimentally validated model was used to simulate the balancing process of both balancing circuits for a high capacity battery module. The results suggest that the proposed method can improve the power loss and extend the discharge time of a battery module. Hence, a higher energy output can be yielded.

[1]  K.D.T. Ngo,et al.  Simplified analysis of PWM converters operating in discontinuous conduction mode using alternate forms of the PWM switch models , 2000, Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105).

[2]  Srdjan M. Lukic,et al.  Energy Storage Systems for Automotive Applications , 2008, IEEE Transactions on Industrial Electronics.

[3]  Cheng Shukang,et al.  Comparison and Evaluation of Charge Equalization Technique for Series Connected Batteries , 2006 .

[4]  Bo-Hyung Cho,et al.  Selective flyback balancing circuit with improved balancing speed for series connected Lithium-ion batteries , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[5]  Gun-Woo Moon,et al.  Individual cell voltage equalizer using selective two current paths for series connected li-ion battery strings , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[6]  A. Emadi,et al.  Battery balancing methods: A comprehensive review , 2008, 2008 IEEE Vehicle Power and Propulsion Conference.

[7]  Gun-Woo Moon,et al.  A Modularized Charge Equalizer for an HEV Lithium-Ion Battery String , 2009, IEEE Transactions on Industrial Electronics.

[8]  Suleiman Abu-Sharkh,et al.  Rapid test and non-linear model characterisation of solid-state lithium-ion batteries , 2004 .

[9]  Werner Roessler,et al.  A cost optimized battery management system with active cell balancing for lithium ion battery stacks , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[10]  Chenglin Liao,et al.  A dynamic equivalent circuit model of LiFePO4 cathode material for lithium ion batteries on hybrid electric vehicles , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[11]  Min Chen,et al.  Accurate electrical battery model capable of predicting runtime and I-V performance , 2006, IEEE Transactions on Energy Conversion.

[12]  Stephen W. Moore,et al.  2001-01-0959 A Review of Cell Equalization Methods for Lithium Ion and Lithium Polymer Battery Systems , 2001 .

[13]  D. Niebur,et al.  Simulink Model for Hybrid Power System Test-bed , 2007, 2007 IEEE Electric Ship Technologies Symposium.