I. Introduction
The gradual development of transportation has improved over the last years which in turn has increased the growth of the automobile industry. Batteries have become the popular form of storage of electrical energy for electric vehicles (EVs). Nowadays, vehicles have become extremely important in day to day life and for industrial use as well. Since the battery is a commonly used device for storage of energy [8], efficient and accurate estimation of State of Charge plays an essential role in the future [5]. The analysis into EV charging stations first starts with understanding the EV driver’s experience. The EV drivers charge wherever they park, adding range at home or at work rather than going to the petrol stations when the tank is empty. This unique approach to charging anywhere makes the future of EVs an ideal choice for all businesses [3]. This is also known as the “top up” model. The forthcoming EV technology has social and economic edges in each the transportation sector and also the energy sector [2]. Several investments have been made towards the development of EVs. Charging demand will increase significantly with the development of EVs [6], [9]. This paper discusses the communication between the driver and the charging stations to create a smart slot booking system for EVs. The Government of India has undertaken multiple initiatives to promote manufacturing and adoption of electric vehicles in India. With the support of the Government, electric vehicles have started penetrating in the Indian market. However, India is in grave need for EVs and this can be implemented if the development of more charging stations is accelerated. It is proposed to encourage this by laying down an enabling framework. There are two particular levels for charging an EV.
Level 1: 120 V, 20 A, 1.4 kW. The time taken to fully charge an EV battery in level 1 is 17 to 25 hours. This is very clearly a slower charging level and can charge only one EV per day in a charging station.
Level 2: 208 – 240 V, 40A, 6.2 – 7.6 kW. The time taken to fully charge an EV battery is 4 to 5 hours and can serve upto 3 to 4 EV per day in a charging station. Very clearly, it is seen that the level 2 charging is more faster and more preferred.