Battery Management System Towards Solid-State Batteries

Solid-state batteries have garnered global attention due to their high energy density and safety, holding the potential to replace traditional lithium-ion batteries in the electric vehicle, alleviating “range anxiety”. However, a comprehensive solid-state battery management system to complement these batteries has not yet been systematically proposed. We attempt to construct a management system for solid-state batteries based on various characteristics, considering both the demand- and supply-side. This review first introduces the advantages and disadvantages of polymer-based, oxide-based, and sulfide-based solid electrolytes, as well as anode and cathode materials with higher specific capacities and promising applications. It lists the cycling performance and safety demonstrated by assembled solid-state pouch cells. Then, we systematically analyzes the differences between all-solid-state batteries and traditional lithium-ion batteries, proposing the demands and development directions for all-solid-state battery management from multiple dimensions. Finally, we build an all-solid-state battery management system from aspects such as signal monitoring, model building, aging, and early warning of failure, which includes three parts: the electric management system, the thermal management system, and the pressure management system. This review aims to provide researchers with new insights and ideas, promoting the efficient development and industrial upgrading of battery management technology.