Electrochemical energy storage systems are usually composed of

Electrochemical energy storage systems are composed of energy storage batteries and battery management systems (BMSs) [2, 3, 4], energy management systems (EMSs) [5, 6, 7], thermal management systems [8], power conversion systems, electrical components, mechanical support, etc. Electrochemical energy storage systems absorb, store, and release energy in the form of electricity and apply technologies from related fields such as electrochemistry, electricity and electronics, thermodynamics, mechanics, etc. Energy storage systems can eliminate the difference between the peaks and valleys in power demand between day and night and play a role in smooth power output, peak and frequency regulation, and reserve capacity. [pdf]