Manufacturing method of paste type lead acid battery plate and manufacturing device of same

Abstract

According to the present method , a paste-type electrode of lead-acid battery in which a space in the lower surface side of an electrode is favorably filled with a paste-like active material so that inner ribs of a current collector forming a grid shape does not remain exposed. The current collector is filled with a paste-like active material to obtain an electrode when the current collector passes below a filler including a hopper for containing the paste-like active material. An electrode surface is pressed during transfer of the electrode before the fed paste-like active material is hardened. The pressing step includes: a first pressing step of intensively pressing a first area of the electrode surface located on one side in a width direction that is perpendicular to a transfer direction in which the electrode is transferred and a thickness direction of the electrode; a second pressing step of intensively pressing a second area of the electrode surface located on the other side in the width direction; and a third pressing step of pressing the first and second areas of the electrode surface over the entire width of the electrode. The first to third pressing steps are each performed at least once. The pressing step is terminated by the third pressing step.

Description

technical field [0001] This invention relates to the manufacturing method of the pole plate for paste-type lead acid batteries, and the manufacturing apparatus used for the manufacture. Background technique [0002] Electrode plates for paste-type lead storage batteries have conventionally been produced as follows. [0003] First, lead powder is used as the main component, and an active material material mixed with other required components is mixed with dilute sulfuric acid or water to prepare a paste-like active material. Then, the adjusted paste-like active material is filled on the grid-shaped lead alloy current collector to prepare a filled electrode plate. The electrode plate surface of the filled electrode plate was pressed to obtain an electrode plate in which the filling property of the paste-like active material was improved. After pressing, the filled plates are dried. The current collector has a relatively thick frame frame and a relatively thin inner frame in...

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Problems solved by technology

However, it is not necessarily possible to reliably fill the paste-like active material on the lower surface side of the electrode plate (the side opposite to the surface filled with the paste-like active material).

In addition, in the technique of Patent Document 2, since the current collector is supported by a hard net, there is a case where the skeleton in the current collector is deformed.

In addition, since the hard net is not necessarily arranged at the position supporting the skeleton in the current collector, the hard net may hinder the filling performance of the pasted active material on the lower surface side of the electrode plate.

In addition, there is a problem that the inner skeleton of the current collector is exposed after removing the hard mesh at the part where the hard mesh supports the inner skeleton of the current collector.

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