Operation manual for Acme series V4.2
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7. Working principle
The chemical reaction-taking place in lead acid battery is as follows:
Pb+PbO
2
+2H
2
SO
4
2PbSO
4
+2H
2
O
Following by-reaction ① takes place in ordinary lead acid battery:
2H
2
O 2H
2
↑+O
2
↑ ①
This by-reaction makes water loss gradually and pure water need to be added
regularly to keep the battery operate normally.
Acme series battery adopts design of barren-liquor and utilizes AGM separator. Thus
there is a path existing between the positive and the negative. Also special alloy grid
is chosen to increase vent hydrogen over-potential gassing on the negative plate,
which prevents generation of Hydrogen. Otherwise, the oxygen generated from
positive diffuses through separator to the negative and the oxygen gas reacts quickly
and is recombined into water. The reactions are as follows:：
2Pb +O
2
2PbO ②
PbO+ H
2
SO
4
PbSO
4
+H
2
O ③
So it is possible to build Acme series battery in sealed structure.
Chapter Two Technical Characteristics
1. Discharge Performance
Fig.2-1 is the terminal voltage vs discharge time curves at different current at 25°C .
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