A recent study led by K. V. Dobrego from the Belarusian National Technical University explores innovative ways to enhance the efficiency of energy storage systems (ESS) by combining different types of batteries. As the demand for electric transport and renewable energy sources grows, the need for effective energy storage solutions is becoming increasingly critical. The battery market has seen a significant annual growth of 20-30% over the last decade, emphasizing the urgency for advancements in this field.
The research focuses on hybrid energy storage systems that utilize both lead-acid and lithium-ion batteries. By examining the passive coupling of these two battery types, the study presents a model that calculates their electrical characteristics during operation. This hybridization approach aims to improve the overall performance of energy storage devices, allowing them to operate without the need for complex voltage converters.
One of the key findings of the research is the importance of coordinating various factors such as the capacity of the ESS, the degree of hybridization, the type of load, and the electrical parameters of the batteries. Dobrego emphasizes that “to equalize the discharge rate of the main and additional units, it is necessary to model the system.” This modeling is crucial for optimizing the performance of hybrid energy storage systems.
The study also investigates different operational modes, including simple parallel connections and more complex switching mechanisms based on threshold algorithms. These methods allow for better management of discharge rates, potentially leading to increased economic efficiency. The research estimates the financial benefits of hybrid ESSs under various conditions, including different threshold switching voltages and load types, such as electric forklift trucks and residential complexes.
This research opens up new commercial opportunities for the energy sector, particularly for small power systems integrated with solar and wind energy sources. By improving the design of hybrid ESSs, companies can enhance their energy storage capabilities, making them more competitive in the market. The findings could significantly impact the design and implementation of generator-storage-consumer systems, providing a pathway for more efficient energy management.
The study was published in “Izvestiâ Vysših Učebnyh Zavedenij i Ènergetičeskih ob Edinennij SNG. Ènergetika,” which translates to “News of Higher Educational Institutions and Energy of the CIS.” This research not only contributes to academic knowledge but also offers practical insights that can be leveraged by industries focused on energy storage and renewable energy integration.
