The auto industry is progressing towards hybrid and fully electric vehicles in their future car models. These vehicles need a power plant that is reliable during the lifetime of the car. Battery capacity imbalances stemming from the cell manufacturer, ensuing driving environment, and operational usage affect voltage levels, which must follow adherence to strict limits to ensure the safety of the driver. A variation on an existing method of using a capacitor to shuttle charge from one battery to another to balance series strings of batteries is proposed in this paper. The advancement shown in this paper is to bridge every two balancing capacitors with an additional capacitor, allowing for a balance time that is drastically reduced when compared to the original method. Simulation using an idealized model shows a substantial improvement in balancing time using the new topology.
M. Ferdowsi and A. Baughman, "Double-Tiered Capacitive Shuttling Method for Balancing Series-Connected Batteries," Proceedings of the 2005 IEEE Vehicle Power and Propulsion Conference, Institute of Electrical and Electronics Engineers (IEEE), Jan 2005.
The definitive version is available at http://dx.doi.org/10.1109/VPPC.2005.1554531
2005 IEEE Vehicle Power and Propulsion Conference
Electrical and Computer Engineering
Keywords and Phrases
Auto Industry; Automobile Industry; Battery Powered Vehicles; Capacitors; Car Model; Cell Manufacturer; Double-Tiered Capacitive Shuttling Method; Driver Safety; Hybrid Electric Vehicles; Power Plant; Reliability; Safety; Series-Connected Battery
Article - Conference proceedings
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