<< Click to Display Table of Contents >> Navigation:  Component Database > Batteries > Batteries - Main interface > Batteries - Detailed model parameters

(see also the "Batteries: model description" and "Lithium-ion model")

 

The Battery detailed  modelling involves several properties, represented by functions of an external parameter. Some of these functions are specified in the database as cubic profiles (i.e. cubic interpolations between 4-5 specified points).

This page shows the behavior of each of these function  (for the whole battery or per element)

1.the "Open Circuit Voltage", which defines the basic voltage behavior without current,

2.the capacity variation as function of discharge rate,

3.the capacity variation as function of the temperature

4.the "Internal Resistance' behavior (for Li-Ion)

5.the lifetime as function of the number of cycles

6.the self-discharge as function of the temperature  behaves approximately as an exponential with temperature, doubling every 10°C.The general temperature behavior is specified as a dimensionless profile.

7.for Lead-acid batteries, the Gassing overvoltage function describes the electrolyte dissociation in overcharging conditions,  and the saturation voltage is a profile describing the maximum voltage at full charge (SOC = 1), when the current is integrally used for the electrolyte dissociation.