battery model with polarization parameter?

I am using the battery model but issue is the values for time constant T1,T2and T3 with respective resistance not include the enough data to create the lookup table based on SoC(1*101) and temperature (1*4).. for the creation of lookup table i will be requiring enough data which help me create lookup table for my model for better estimatio.

Answer 1

[Sayan]

Hi @Armaghan Arshad,

I understand from your query that you need to provide adequate data to the "Charge dynamics" section of the Battery (Table-Based) (available at Simscape / Electrical / Sources) block with the data size [length of SoC x length of temperature] for battery dynamic behaviour estimation. However, when you select a particular part from a particular manufacturer, the values are not set as per your expectations. The possible reasons for the same and the fixes are mentioned below.

• When a particular part from a particular manufacturer is selected, it can be found that the "Parameterization" column shows "Parameter not set". This indicates the value of the parameter has not been provided for the part by the manufacturer. You can find the datasheet of the manufacturer and provide the value manually; otherwise, interpolate the data from the lookup table for the desired number of values.
• If you have the exact data of the battery, the Battery block (available at Simscape / Electrical / Sources) can be used to include the polarization parameter in "Charging dynamics" and set the value of the polarization resistance and time constant.

Further information on Battery and Battery (Table-Based) can be found in the following documentation:

1. Battery:https://www.mathworks.com/help/releases/R2022a/physmod/sps/ref/battery.html
2. Battery (Table-Based):https://www.mathworks.com/help/releases/R2022a/physmod/sps/ref/batterytablebased.html

Hope this answers the query.