Rechargeable lithium-ion batteries are promising when it comes to stationary energy storage systems because of their high energy density, high power density, low discharge rate, and decreasing cost. Due to the ongoing electrification of the automotive sector, the energy storage systems in electric vehicles can be used after their end-of-life because these energy storage systems still have some life left. Thus, these can be used in stationary energy storage systems as second-life batteries. These second-life batteries need to be designed in a specific way because their degradation is non-linear with their usage. This paper proposes an economically optimized second-life electric vehicle battery for the industrial and commercial sectors for solar power storage in Germany. Three different solar-to-load ratios (0.8, 1.0, and 1.2) were analyzed to provide a comparative study. Furthermore, simulations were performed using real load data from five different German industries with parameters such as state of health, electricity prices, and battery costs.
Ämnegranskare är Bahri Uzunoglu