Simulation with series cell and parallel cell

[DxKwanju]

I use DFN model to simulate the NMC battery datasets (from Chen2020).
And, I try to make 1 module as several series and parallel cell, so I change the parameter follow the electric circuit rules.
ex1) If I increase parallel cell , I increase C-rate in the simulation.
ex2) If I increase series cell, I increase the voltage in the experimental condition.
When I change parallel cell, the simulation is working what I thought (Increase or decrease the capacity of whole module), however, in case of increasing series cell and experimental condition, the voltage is automatically fitting, so it is same with 1 series and several parallel cell.
Is it right in series cell data?

If you want more information about it, please tell me.