Dynamis lead-line 기술 매뉴얼 - 페이지 5

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3.2 Battery Voltage

The open circuit voltage of lead acid battery indicates the equilibrium



voltage of the battery's main reaction. The concentration of the sulfuric acid

participated in the main reaction is the major factor influencing the open

circuit voltage.



Right after charge or discharge, the concentration of sulfuric acid inside the

plates is still changing due to the diffusion process. It takes several hours to

several days to stabilize the open circuit voltage.



The concentration of sulfuric acid in the battery is an indicator of battery

capacity. Therefore, the state of charge of the battery is available through

measuring the open circuit voltage. The relation between the battery capacity

and open circuit voltage is as follows:

3.3 Battery Self-discharge



The lead acid battery will have self-discharge reaction under open circuit

condition, in which the lead is reacts with sulfuric acid to form lead sulfate

and evolve hydrogen. The reaction is accelerated at higher temperature. The

result of self-discharge is the lowering of voltage and capacity loss.



Batteries will lose capacity due to self-discharge through packing,

transportation and storage process at various temperatures. The relation

between battery capacity and storage temperature and time is as follows:

DYNAMIS Batterien GmbH

Tel. +49 7735 93669-0

Brühlstr. 15 D-78465 Dettingen / Konstanz

Fax +49 7735 93669-91

www.dynamis-batterien.de

04.12.2006

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