A Mechanism to Determine Fast Charging Protocol of Battery

The ever growing need to decarbonize the economy is forcing policy makers to frame regulations favoring sustainability. The transportation sector being carbon-intensive is under heavy scrutiny of the policy makers. To provide sustainable transportation solution to the customers, automotive manufacturers are developing Electric Vehicles (EV). However, the huge charging time required to charge the EVs is a major hindrance for the wide-spread acceptance of EVs. This study proposes a methodology to achieve fast charging of batteries. Charging time is targeted to be reduced while ensuring the operational and practical constraints on charging. The C-rate for charging is the operational constraint considered. The practical constraints include the temperature and temperature rise rate of the battery as they need to be maintained within well-defined range. The charging protocol obtained using the proposed approach satisfies all the operational and practical constraints and the charging time is 1430 seconds with negligible capacity fade. Comparison with two other charging strategies - aggressive and slow charging protocols indicate the drawbacks with these approaches establishing the utility of the proposed approach.