how can i account charge and discharge of battery in ev modeling.

Answer 1

[MULI]

Hi Gokarna,

I understand that you are trying to model both the charge and discharge behaviour of a battery in an electric vehicle (EV) and you are encountering an error related to the battery's temperature-adjusted polarization resistance.

To resolve this issue and accurately account for both the charge and discharge cycles in your EV battery model, you can follow these steps:

• Make sure that the battery's polarization resistance, internal resistance, and other key parameters are properly defined for both charging and discharging scenarios.
• Polarization resistance, for example, must remain greater than zero, even when adjusted for temperature.
• Models like the ‘Battery (Table-Based)’ in Simulink allow you to specify different characteristics for charge and discharge behaviour. You can refer to the below link for more information related to tabulated battery model. https://www.mathworks.com/help/sps/ref/batterytablebased.html
• If the model accounts for temperature, ensure that the temperature-dependent parameters (like polarization resistance) are well-defined for both charging and discharging cycles.

You can refer to the below link for more information related to Battery Thermal Management System.

https://www.mathworks.com/discovery/battery-thermal-management-system.html

Hope this answers your query!