A Fast Charging Method for Lithium ion Batteries Based on a Unique Current Profile Method InnovMon Technologies Pvt. Limited

Format:

Book

Conference/Event

Author/Creator:

S, Manjunatha, author.

Contributor:

K A, Rakesh

Pratiwadibhayankaram, Ashwini Kumar Krishnaswamy

Conference Name:

Symposium on International Automotive Technology (2024-01-23 : Pune, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2024

Summary:

The major constraint for consumers to shift from Internal combustion engines to Electric vehicles is the long waiting time to recharge their vehicles. With rapidly increasing interest for electric vehicles, there has been a need for fast charging systems to charge the lithium-ion batteries commonly used in all mobility vehicles. Not all Li-ion chemistry tolerate fast charging as it accelerates ageing leading to reduced life span and increases safety risk. The two main challenges faced to for developing fast charging are: requirement of complex charging electronic circuitry and suitable current profile to recharge the battery in shortest possible time. A common approach by researchers has been only to meet on any one challenge mentioned above. Only few attempts have been made to address both the challenges together. Therefore, in this work, we are presenting a unique fast charger that can adapt to the user needs and a unique current profile (UCP) to attain an efficient fast charging of Li-ion batteries. To evaluate the designed unique current profile concerning charging time and temperature increase the results are compared with the conventional charging technique id est, constant current constant voltage (CC-CV). The results show that, the UCP technique applied on C/NCA Li-ion power optimised cells permits to recharge 80% of State of charge (SoC) in 45 minutes with a temperature elevation of 2°C beyond ambient temperature which is 4°C less than that of the conventional CC-CV protocol to recharge same amount of capacity. Ageing studies have been carried out and results show that the UCP technique preserves the life span of the batteries in comparison to conventional CC-CV technique

Notes:

Vendor supplied data

Publisher Number:

2024-26-0114

Access Restriction:

Restricted for use by site license