I want to implement charging and discharging of 48V lead-acid batteries used in light electric vehicles (2-wheelers, 3-wheelers) using CC-CV-FLOAT mode

I need to develop a model for 48V lead-acid battery charging using CC-CV-FLOAT algorithm with accurate time estimation for both charging and discharging cycles.

Requirements:

• CC-CV-FLOAT charging implementation
• Charging/discharging time calculation
• Battery behavior modeling
• Performance visualization

Now,

1. What's the best approach to model lead-acid battery dynamics in MATLAB/SIMULINK?
2. How to implement CC-CV-FLOAT state transitions effectively?
3. Which parameters are critical for accurate time estimation?

Answer 1

[Javier Gazzarri]

Hello Sanjid, thank you for your question.

Here is an example of a system that uses a PbA battery model autoElectrical

I recommend you use Simscape to create an equivalent circuit that captures all the electrochemical effects that you need and at the same time gives you adequate fidelity.

Stateflow is a great tool to model state transitions such as the ones you mention above.

Regarding parameters, I would at least consider OCV, internal resistance, dynamic resistance, self-discharge, and the Peukert effect, and all of these should depend on temperature using lookup tables.

Please let me know if this helps.

Best regards,

Javier

[Sanjid]

Thanks for the timid response and suggestions. I also been thinking the same way. Let me dive in and will let you know if anything needed.