Not getting OCV fading curve of a Battery equivalent circuit model based on runtime and Thevenin models

I am modeling a 850mAh battery equivalent circuit using Simulink as in the picture. I assume battery parameters including resistors and capacitors are constant and only Open Circuit Voltage (OCV) change with battery SOC. SOC is calculated using the following equation where i is battery current in Amp, C is battery capacity in Ah.

I use a -0.85A step current as the input to the controlled current source so that the battery discharge current is a constant 0.85A. The stop time is set to 3600. The SOC-OCV relation is through a lookup table where SOC change from 1 to 0 while OCV change from 4.1V to 3.6V. With this I expect OCV and terminal voltage to have a decreasing curve over the time 3600s. However, OCV is constant and the terminal voltage is reducing.

I do not know how to set the solver configuration settings for this. Can anyone explain where I'm wrong. All figures attached.

Answer 1

[Upekha Pathirage]

I changed the "inport" & "outport" ports to "goto" & "from" ports. Now the model is working.