Improved E-bike charger suitable for advanced charging algorithms

摘要

Electric Vehicles (EVs) are far more advanced compared to Internal Combustion Engine (ICE) vehicles but are limited by the energy storage segment. This is due to its long charging time, lower range, and low efficiency of battery chargers. These can be overcome by using a highly efficient charger. This paper deals with designing an AC charger which is capable of charging Li-ion batteries using advanced charging algorithms like Sinusoidal Ripple Current (SRC) and Pulse Current (PC) charging. In AC charging, total charging efficiency can be improved by increasing the efficiency of the rectifier, so a battery charger with a highly efficient Bridgeless Interleaved Boost Converter as its front-end converter and followed by a V to I Converter at its back-end is designed. Bridgeless Interleaved (BLIL) Boost Converter also serves the purpose of a Power Factor Correction (PFC). In this paper, charging time and efficiency is compared for a 48V 35Ah Li-ion battery which is suitable for Electric-bike (E-bike) application.