Control valve type lead accumulator

Abstract

A control valve type lead storage battery of the invention has a plate group composed of positive plates and negative plates which are alternately overlapped with each other, and a film is placed between every positive plate and negative plate. The positive and the negative plates contain multi-mesh grid bodies for active substance preservation, wherein, at least the grid body of the negative plates are composed of net-shape metal grid. The distance between a positive plate and a negative plate is 1.20mm or greater than the value, and the response utilization ratio of the active substances preserved in the meshes of the net-shape metal grid is 32.0% or lower than the value.

Description

technical field

[0001] The present invention relates to a control valve type lead storage battery. Background technique

[0002] In recent years, expanded metal grids have been increasingly used as plates for valve-controlled lead-acid batteries. The mesh metal grid system is: a plurality of slits are intermittently arranged in parallel on a lead alloy sheet (sheet), and after the linear part between the slits protrudes from the inside and outside of the sheet (sheet), the above-mentioned The sheet is stretched in a direction perpendicular to the slit, thereby forming a plurality of rhombic meshes for holding the active material (see FIG. 1 ). Because this mesh metal grid can be made thinner, it is superior to traditional cast grids. Therefore, by using the mesh metal grid for the pole plate of the valve-type lead-acid battery, it is possible to reduce the weight of the lead-acid battery and reduce the amount of lead alloy used for the pole plate.

[0003] However, since ...

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