Automatic Battery Charging Algorithms for Hybrid Electric Vehicles
F.Vijay Amirtha Raj
F.Vijay Amirtha Raj, Electrical and Electronics Engineering, RVS College of Engineering and Technology, Coimbatore, India.
Manuscript received on December 01, 2012. | Revised Manuscript received on December 18, 2012. | Manuscript published on December 25, 2012. | PP: 11-16 | Volume-1 Issue-2, December 2012 | Retrieval Number: B0114121212/2012©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). Th is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Battery-charging algorithms can be used for either single or multiple-battery chemistries. Single-chemistry chargers have some advantages than multi chemistry chargers because of its simplicity and reliability. On the other hand, multi chemistry chargers, or “universal battery chargers,” provide a practical option for multi chemistry battery systems, particularly for portable appliances, but they have some limitations. This paper proposes the design of a single chemistry intelligent battery charger that can be used for major batteries, i.e. Nickel-Metal-Hydride and Lithium-Ion batteries for use in Hybrid Electric Vehicles (HEV). The design is implemented using MATLAB Simulation Tool which monitors the battery status and parameters and controls the charging operation. This ensures complete, fast, and safe charging of the battery pack.
Keywords: Constant current (CC), constant voltage (CV), inflection point, open-circuit voltage (OCV), pulse charging, state of charge (SOC), trickle charging, voltage drop.