Topology of Battery Management System for Second Life Battery Energy Storage System

Abstract

With the growing development of electromobility, the number of manufactured batteries is also increasing, which will eventually need to be recycled. One of the recycling options is to use worn but still functional batteries in energy storage systems, giving them a second life. Each battery assembly requires a Battery Management System (BMS) for proper and safe operation. For recycled cells, the BMS system is more complex due to significant differences in wear and, consequently, in parameters between the cells. Therefore, active balancing of each cell in the assembly is necessary in such a configuration. Additionally, increased safety measures must be taken for such an assembly.