State of charge and peak power estimation of NCM/Li4Ti5O12 battery using ic curve for rail tractor application

Author

Sijia Liu ; Jiuchun Jiang ; Wei Shi ; Zeyu Ma ; Hongyu Guo

Author_Institution

Nat. Active Distrib. Network Technol. Res. Center, Beijing Jiaotong Univ., Beijing, China

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

3

Abstract

Lithium titanate battery has not only a longer cycle life, but also better rate characteristics and wider operating temperature range over other batteries of the same type. Estimation of SOC and peak power is of great significance to reasonable use and extension of battery life. Based on existing battery SOC estimation methods and incremental capacity analysis (ICA), the value of SOC can be modified by charging peak and valley through analysing Q/ V curves with different charging rates, which can accurately estimate the peak power and provide the basis for application of lithium titanate battery in the field of rail tractor.

Keywords

agricultural machinery; battery powered vehicles; lithium compounds; secondary cells; titanium compounds; IC curve; Li₄Ti₅O₁₂; SOC estimation methods; battery life; charging rates; incremental capacity analysis; lithium titanate battery; peak power estimation; rail tractor; state of charge; Batteries; Estimation; Lithium; System-on-chip; Temperature; Titanium compounds; Vehicles; ICA; SOC; lithium titanate battery; peak power;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6940971

Filename

6940971