How to find co-efficient beta value in simple battery model?

How to find the beta value in simple battery model using {AH1,V1} values?

[KALYAN ACHARJYA]

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Answer 1

[Sabin]

The coefficient beta is computed using {AH1,V1} values. Considering V = Vnom*SOC/(1-beta*(1-SOC)), for a simple case we can do something like:

x = (AH - AH1)/AH

y = V1/Vnom

beta = (x+y-1)/x/y

The complexity will increase in case of adding fading, thermal effects, etc.