Charging time and loss optimization for LiNMC and LiFePO4 batteries based on equivalent circuit models
نویسندگان
چکیده
Battery management system monitors and mitigates the operation of battery cells and stacks and is important for battery safety and reliability. This paper presents a dual-objective optimal charging strategy for two types of Li-ion batteries, which considers the conflict objectives of charging time and charging loss. The battery models developed in a prior research are used in the charging optimization. The influences of the charging voltage threshold, temperature, and health status on the charging results are analyzed for both lithium nickelemanganeseecobalt oxide (LiNMC) and lithium iron phosphate (LiFePO4) batteries. A comparison with the charging results based on the models that cannot describe the entire battery dynamics is also performed. 2013 Elsevier B.V. All rights reserved.
منابع مشابه
Study on the Optimal Charging Strategy for Lithium-Ion Batteries Used in Electric Vehicles
The charging method of lithium-ion batteries used in electric vehicles (EVs) significantly affects its commercial application. This paper aims to make three contributions to the existing literature. (1) In order to achieve an efficient charging strategy for lithium-ion batteries with shorter charging time and lower charring loss, the trade-off problem between charging loss and charging time has...
متن کاملA Comparative Study of Different Fast Charging methodologies for Lithium-Ion Batteries Based on Aging Process
The charging profile and the quality of the charging system play a key role in the lifetime and the reliability of the battery. In this research, high power 7 Ah LiFePO4-based cells (LFP) have been used to investigate the impact of the fast charging technique on the battery’s lifetime and the charging time. The charging time is an important factor to save time and cost during the battery operat...
متن کاملEfficiently photo-charging lithium-ion battery by perovskite solar cell
Electric vehicles using lithium-ion battery pack(s) for propulsion have recently attracted a great deal of interest. The large-scale practical application of battery electric vehicles may not be realized unless lithium-ion batteries with self-charging suppliers will be developed. Solar cells offer an attractive option for directly photo-charging lithium-ion batteries. Here we demonstrate the us...
متن کاملA chemically activated graphene-encapsulated LiFePO4 composite for high-performance lithium ion batteries.
A composite of modified graphene and LiFePO4 has been developed to improve the speed of charging-discharging and the cycling stability of lithium ion batteries using LiFePO4 as a cathode material. Chemically activated graphene (CA-graphene) has been successfully synthesized via activation by KOH. The as-prepared CA-graphene was mixed with LiFePO4 to prepare the composite. Microscopic observatio...
متن کاملParameterization and Validation of an Integrated Electro-thermal Cylindrical Lfp Battery Model
In this paper, for the first time, an equivalent circuit electrical model is integrated with a two-state thermal model to form an electro-thermal model for cylindrical lithium ion batteries. The parameterization of such model for an A123 26650 LiFePO4 cylindrical battery is presented. The resistances and capacitances of the equivalent circuit model are identified at different temperatures and s...
متن کامل