Battery energy storage system and method of electrically isolating multiple battery cells

Abstract

Battery energy storage systems and methods for electrically isolating a plurality of battery cells from an interface port are disclosed. In one example, a method includes measuring an electrical parameter on a DC bus to which a plurality of battery cells are electrically coupled. The electrical parameter and a number of the battery cells are used to determine an individual battery cell electrical parameter. The plurality of battery cells are electrically isolated from the interface port based at least on comparing the individual battery cell electrical parameter to a predefined threshold.

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