SOC estimation using coulomb counting

Battery Management
1

Hi everyone,

I got stuck in the concept of SOC estimation using Coulomb counting and SOC-OCV curve look up table.

Actually, one of the main issues which arise for me is when the EV is switch on and then you switched it off. After one minute you are going to switch it on and now EV is under operating. So how this method can use OCV-SOC lookup table while the batteries have not reach the steady-state (I mean voltage equilibrium).

We just can use the look up table when the battery have long rest and the battery voltage is a steady-state mode.

Do you have any comments about it?

Thanks,
Jooni

2

Hi,
Please refer to this article publication to get further insight and clarity on how coulomb counting is utilized for SOC estimation.

Best,
Nouman