Battery State of charge estimation

I am currently building a battery model to measure the state of charge of the battery (Lithium Ion with 48V and 20Ah). The battery is used in an electric vehicle and I am trying to monitor the SoC.

However, the battery has no datasheet!

Is it possible that I could estimate the state of charge?

If so, how the project going to work? I mean, am I going to work on the model and then convert it to a C code and deploy it on an embedded device?

I also need some guidance on how to start working on this project.

[Padmamalini T H]

in many papers it is suggested that SOC is equivalent to the open circuit voltage of a battery. so you can consider OCV as your SOC. if you still need a Li-Ion SOC dataset it is available in ieee data port.

Answer 1

[Qiancheng Zhou]

Hi Ahmed,

Simulink is a platform for modeling both plants and algorithm.

If you have model of your algorithm, it can be convert to C code. You can use it in your embedded device.

If you can build battery model in it, then you can combine algorithm and battery, use algorithm to estimate SoC of battery.

[Shubhangi Motghare]

@Qiancheng Zhou, what is process to estimate SOC of a battery ? Can u help me in this Project ?

Answer 2

[Sivakumar Selvam]

You can estimate battery SoC by measuring battery terminal voltage.

[Moutaa Madani]

No Soc must be measured based on current

Answer 3

[Moutaa Madani]

Hi,

Me too I am working on calculating the state of charge of li-ion battery and implementing this algorithm on Rasberry Pi, but I really can't find a clear tuto to follow