Performance Evaluation of Battery Life Cycle with Supercapacitor Augmentation

Super capacitors are energy storage density devices with high-power density, electrochemical double-layer capacitors, have attracted a lot of attention recently. These gadgets are perfect for uses like electric vehicles and renewable energy systems, which demand significant energy storage and quick charging and discharging. Super capacitors also have a long cycle life and may be repeatedly charged and drained without noticeably losing performance. However, Super capacitors cannot be used as the main energy storage device in most applications due to their poor energy density, they can be augmented with the existing battery management system to enhance the battery efficiency and life cycle. There are various ways to connect a battery and a super capacitor. Therefore, the proposed work focuses on augmentation of super capacitor with battery either in parallel/series mode to extend the lifecycle of the battery and reduce the overall system cost. The work also presented a buck-boost converter as a control unit to improve the life cycle. The test scenario considered battery test without super capacitor and estimated the number of cycles maximum of 5000. The proposed battery system with augmented Super capacitor demonstrated enhanced performance of 6000 cycles. Therefore, augmentation of super capacitor proved 20% of improved performance of the battery system.