Novel Parameter Identification Method for Lithium-Ion Batteries Based on Curve Fitting
- Resource Type
- Conference
- Authors
- Lukic, Milos; Giangrande, Paolo; Klumpner, Christian; Galea, Michael
- Source
- 2020 IEEE Vehicle Power and Propulsion Conference (VPPC) Vehicle Power and Propulsion Conference (VPPC), 2020 IEEE. :1-5 Nov, 2020
- Subject
- Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Lithium-ion batteries
Parameter estimation
Fitting
Estimation
Integrated circuit modeling
Curve fitting
Equivalent circuits
Batteries
modelling
parameter identification
energy storage device
- Language
This paper describes a new curve-fitting lithium-ion battery parameter identification method for equivalent circuit models. The current pulse/relaxation test is carried out and the corresponding terminal voltage is used for extracting the battery model parameters. Analysis and fitting of the waveform is performed for both pulse and relaxation periods without assuming the initial conditions of the associated RC branches. This approach is demonstrated for 2 nd order model using commercial battery cell and model results are presented and compared against experimental finding revealing a good agreement.