Equivalent circuit modelling of a cell in simulink and plotting the discharge characteristics

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I am trying to model the equivalent circuit of a battery cell in simulink. I modelled one RC and Two RC circuit and tried to validate the discharge plot of the cell from a literature. Everything was done as per the literature but there is a difference observing at the end of simulation in the discharge plot as shown below. Can anyone suggest any opinion in improving the result or any particular thing i need to consider mainly.
This is the plot from literature
This is the plot from simulation
Literature: Comparative Research on RC Equivalent Circuit Models for Lithium-Ion Batteries of Electric Vehicles Lijun Zhang 1,* ID , Hui Peng 1 , Zhansheng Ning 1 , Zhongqiang Mu 1 and Changyan Sun

Accepted Answer

Pratyush Roy
Pratyush Roy on 26 Jul 2021
Edited: Pratyush Roy on 26 Jul 2021
Hi Ranjith,
Can you share the Simulink model(s) so that we can reproduce the issue from our end?
Pratyush Roy
Pratyush Roy on 4 Aug 2021
Hi Ranjith,
One of the factors which should be taken into consideration while obtaining the output is the Type of Solver used.The documentation link here might be helpful to understand types of solver to use under different circumstances.
Hope this helps!

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