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Article

A Bilevel Equalizer for Large Lithium Ion Batteries

Electrical Engineering and Computer Science Department, University of Toledo, 2801 W. Bancroft, Toledo, OH 43606-3390, USA
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Batteries 2017, 3(4), 39; https://doi.org/10.3390/batteries3040039
Received: 5 September 2017 / Revised: 3 November 2017 / Accepted: 21 November 2017 / Published: 7 December 2017
Due to variations among the cells, large lithium ion batteries (LIB) such as those in battery energy storage stations (BESS) and electric vehicles (EVs) must have an equalizer (EQU) circuit to balance the cell voltages. In spite of their significant losses and other limitations, passive equalizers (PEQ) are used in most applications because they are relatively simple and low cost. Active equalizers (AEQ) reduce these PEQ problems, but are not as widely used due to their much higher cost and complexity. A new hybrid circuit called the Bilevel EQU (BEQ) combines the PEQ and AEQ to provide much higher performance than a pure PEQ but at a much lower cost than a pure AEQ. View Full-Text
Keywords: lithium ion; equalizer; passive; active; bilevel; discharge capacity; battery management lithium ion; equalizer; passive; active; bilevel; discharge capacity; battery management
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MDPI and ACS Style

Mubenga, N.S.; Linkous, Z.; Stuart, T. A Bilevel Equalizer for Large Lithium Ion Batteries. Batteries 2017, 3, 39. https://doi.org/10.3390/batteries3040039

AMA Style

Mubenga NS, Linkous Z, Stuart T. A Bilevel Equalizer for Large Lithium Ion Batteries. Batteries. 2017; 3(4):39. https://doi.org/10.3390/batteries3040039

Chicago/Turabian Style

Mubenga, Ngalula S., Zachary Linkous, and Thomas Stuart. 2017. "A Bilevel Equalizer for Large Lithium Ion Batteries" Batteries 3, no. 4: 39. https://doi.org/10.3390/batteries3040039

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