Research of NiMH Battery Modeling and Simulation Based on Linear Regression Analysis Method
Abstract: The battery
state-of-charge estimation was one of core issues in the development of
electric vehicles battery management system, and higher accurate model was
needed in state-of-charge estimation correctly. Therefore, accurate battery
modeling and simulation was researched here. The Thevenin equivalent circuit
model of NiMH battery was established for the poor accuracy of traditional
model. Based on the data which were brought from the 6V 6Ah NiMH battery hybrid
pulse cycling test experiments, Thevenin model parameters were identified by
means of the linear regression analysis method. Then, the battery equivalent
circuit simulating model was built in the MATLAB/Simulink environment. The
simulation and experimental results showed that the model has better accuracy
and can be used to guide the battery state-of-charge estimation.
Keywords: NiMH battery,
Equivalent circuit, Linear regression, parameter identification, modeling and simulation
Author: Chang-hao Piao,
Qing-yong Qin, Qian Zhang, Yong-sheng Zhang
Journal Code: jptkomputergg130099
