Lithium ion battery modelling
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Hello,
I would like to model the Lithium ioin battery pack. I have gone through the matlab resources and I dont understand the equivalent circuit method. Is it possible to model the battery with data available from the datasheet like capacity, Internal impedence and other? Also, I dont have the discharge to temperature relation data.
My question is, Does the parameter estimation method provides me the discharge data with relation to temperature using the values from datasheet?
Kindly provide me some information
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Joel Van Sickel
il 22 Dic 2021
I would start with this blocK: https://www.mathworks.com/help/physmod/sps/ref/batterytablebased.html
this block will let you chose pre-parameterized models from certain vendors.
Capacity and internal impedance aren't enough data to capture the many complexities of a lithium ion battery. They are certainly good enough for a basic simulation especially if you are more focused on the rest of the circuit performance, but if you need to study aging, detailed SOC estimation, etc. a much more thorough battery characterization process is needed. So either you need a lot of data from the vendor, or you have to set up your own battery characterization test.
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