Design of Battery Energy Storage System based on Ragone Curve

With the characteristics of high power density, high energy density and flexible configuration, electrochemical energy storage power station is widely used in power generation, transmission, distribution and power consumption, which effectively solves the problem of time and space distribution of electric energy. Based on the Ragone curve of energy storage battery, the design method of energy storage system is proposed in this paper. This paper introduces the drawing method of Ragone curve, and introduces the Ragone curve of commonly used energy storage lithium iron phosphate battery and lead-acid battery. Taking the given 20kW, 500kJ energy storage system design as an example, using the Ragone curve and the actual demand, combined with the battery power constraints, two kinds of energy storage battery configuration methods are obtained. This method avoids complicated derivation and calculation of electrochemical formula, and has certain practical application value.