Fast Charging of Batteries using Cascade-Control-Barrier Functions

This paper proposes a control barrier function (CBF) approach for fast charging of batteries under temperature, charge and terminal voltage constraints. To improve numerical efficiency, we derive a cascade CBF formulation, which divides this safety problem into multiple layers that are easier to formulate and implement. Experimental results demonstrate the effectiveness of the fast charging algorithm, decreasing charging time by 22% when compared to state-of-art constant current, constant voltage (CC-CV) methods and without violating electro-thermal safety constraints.

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