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This circuit tests the simple battery created hierarchically from

https://www.systemvision.com/design/hierarchical-battery-model-simple

This is a hierarchical representation of a simple battery cell. It can be used to construct an encapsulated VHDL-AMS model.

EIS - Electrochemical Impedance Spectroscopy

This circuit models the charge and then discharge of a battery.

It's based on the structural model of a battery found here:

https://www.systemvision.com/design/hierachical-battery-model

This circuit models a LiFePO4 cell voltage.

Based off of the model described in:

Liao Chenglin; Li Huiju; Wang Lifang, "A dynamic equivalent circuit model of LiFePO4 cathode material for lithium ion batteries on hybrid electric vehicles," Vehicle Power and Propulsion Conference, 2009. VPPC '09. IEEE , vol., no., pp.1662,1665, 7-10 Sept. 2009

doi: 10.1109/VPPC.2009.5289681

see also http://www.systemvision.com/design/dynamic-equivalent-circuit-model-lifepo4-batteries

parameters:

initial SOC [no units] (0.0 - 1.0)

initial charge capacity [Amphour] (> 0.0)

See this test circuit, which implements a hierarchical version of this model:

https://www.systemvision.com/design/test-battery-vocfsoc

The battery models the anode as a porous substrate that is plated with a metal and then filled with lithium. The resistance of the metal is calculated from the resistivity of the metal (an input parameter). The battery capacity is calculated assuming that the lithium is the limiting reactant.

The open circuit voltage is modeled as a function of state-of-charge (Nerst equation).

Three loss mechanisms are included:

(1) Activation voltage drop (Tafel equation)

(2) Ohmic losses (resistivity of substrate and plating)

(3) Transport losses (empirical)

surface charge storage is modeled as a time delay between the instantaneous activation voltage and the effective activation voltage.

This is a copy

Circit that will protect system and Lead-Acid battery from excessive current and voltage in case bettery reversal