Temperature Regulated Charging Strategies for Electric Vehicles

Abstract

Abstract newlineNon-renewable energy sources such as diesel, petrol, etc have lead to huge newlinedestruction to the environment and climatic changes. Hybrid electric vehicles and pure newlineelectric vehicles are resolving the above issues to a large extend. Recently, the newlineresearches on EVs are in the greatest boom to replace the IEC vehicles with newlinebattery-operated vehicles. This thesis describes the different charging strategies, newlinedesign, control, and implementation of temperature regulated charging strategies. The newlinefirst chapter describes the classification of electric vehicle charging systems and a deep newlineliterature survey on the types of batteries for EVs and types of charging strategies. The newlinemajor challenges and objectives associated with the EVs are summarized in this newlinechapter. The second chapter of this thesis describes different battery modeling such as newlineelectro-chemical, mathematical, and electrical models. The parameters obtained newlinethrough electro-chemical and mathematical models through regress techniques and are newlinevery complex and computational. Whereas electric model is easy to simulate. newlineHowever, this model does not capture thermal and health analyses of the battery. For newlinethis purpose discrete electro-thermal and aging model is developed to address the newlineelectric, thermal and aging behavior during charging operation. The third chapter newlinedescribes the proposed temperature regulated pulse charging strategy (TRPC). To newlinedemonstrate the TRPC strategy discrete electro-thermal and aging model is developed. newlineBased on estimator and experimental results three regions A, B, and C are described. newlineRegion A, where the temperature of the battery does not cross the maximum limit of newlinethe particular band, so constant current is injected into the battery. The TRPC strategy newlineis operated in temperature regulated zone i.e. region B ad C, here the battery newlinetemperature starts rising beyond the maximum set value and the pulse mechanism newlinetakes place. This strategy shifts the temperature reference upward to ensure maximum newlinecharge deposited into the battery. newlineFurther study