lead battery

Abstract

The present invention provides a composite lead acid battery capable of suppressing variations in the filling amount and packing density of active materials in a positive electrode plate produced by a wet filling method. In the lead acid battery provided with the composite positive electrode plate produced by the wet filling method, the said composite positive electrode plate contains 0.02 mass % or more of antimony in the positive electrode active material after chemical conversion.

Description

technical field [0001] This invention relates to the lead acid storage battery provided with the composite positive electrode plate produced by the wet filling method. Background technique [0002] A lead alloy core is passed through the center of a porous cylindrical tube made of glass fibers, and the surrounding area is filled with active material raw materials, so that it is manufactured through chemical conversion and other processes. Used in batteries for recycling purposes such as forklift batteries Composite positive plate used. As a method of filling the active material raw material into the tube, although the dry filling method and the wet filling method are mentioned (Patent Document 1), since the dry filling method generates lead oxide dust during the filling operation, the operating environment From the point of view, the wet filling method is better, wherein the dry filling method fills the lead oxide while applying vibration, and the wet filling method uses di...

AI Technical Summary

Problems solved by technology

[0004] In the case of using such a wet filling method to make a composite positive plate, when the fluidity of the positive active material paste (or slurry) decreases, it is easy to cause deviations in the filling amount and uneven filling density.

And, when the density of the positive electrode active material raw material paste (or slurry) is low, since the solid-liquid separation of the paste (or slurry) is easily caused, it is easy to cause the deviation of the filling amount and the unevenness of the filling density.

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