The microscopic model of discharging in the case of a lead-acid battery: Page 4 of 4

August 10, 2015 //By Szabo Levente
The microscopic model of discharging in the case of a lead-acid battery
Szabo Levente explains a microscopic model of discharging in the case of a lead-acid battery.
in one reaction). The C1-C10 capacitors are coupled to the external circuit only for the short time, when they release electrons. Every capacitor separately is commanded by the command module. In the first step C1 is connected and the first electrons are released to the external circuit. The time of this period is equal to the reaction time, when the first primary elements are transformed into the first secondary elements. The next step is the pause, when the first secondary elements change places with the next primary elements. In the next step C2 is connected and these steps continue until the last primary elements release electrons and transform into the last secondary elements. The graph, which represents this process, is shown in Figure 4.

Figure 4: Timing of connecting the capacitors in the external circuits
We consider that the time of connecting the capacitors is equal with the time of changing places of two neighbor elements.
This ideal microscopic model using an electric circuit helps us understand easier the phenomenon that happens on the unit area of the electrode in the reaction zone. In the case of a real model we must consider  that the time of the reactions and the replacement of the primary elements with the secondary elements may be different, other elements situated outside of this zone in the electrolyte  may have influence on the process, the time of the reaction in the case of different elements may be different, the spatial distribution of the elements may not perpendicular, the electrical field may not be homogenous and other internal and external conditions may have influence on the process.

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