Empirical study on health status assessment of outdoor energy storage power stations

Against the backdrop of the global energy structure transformation and the large-scale integration of renewable energy, energy storage technology plays a crucial role in ensuring the stability of the power grid and enhancing energy efficiency. Accurately assessing the health status and expected lifespan of batteries in energy storage systems is vital for reducing operational costs and enhancing the performance of energy storage power stations. This study reveals the voltage differences, temperature variation patterns, and the dynamic variation law of charging and discharging efficiency of batteries under different seasonal and environmental conditions, by monitoring key parameters such as voltage, capacity, and temperature over the long term. The research results indicate that parameters such as temperature differences, voltage differences, and charging and discharging efficiency among individual batteries show significant changes over time and with variations in environmental temperature. These changes are of great importance for a deeper understanding and prediction of the battery aging process. This study is not only conducive to optimizing battery management systems and improving the economic benefits and safety of power stations, but also has a profound impact on promoting technological advancements in the energy storage industry, expanding market opportunities for enterprises, and enhancing competitiveness.