JPS5819874A - Manufacture of pasted lead storage battery - Google Patents

Abstract

PURPOSE:To improve the life performance of a pasted lead storage battery by increasing the pressure applied to the plates by putting a plate group into a container having a somewhat larger inner dimension that the length of the plate group, and remolding the container into a given dimension by contracting and deforming it by heating. CONSTITUTION:After a strap is welded to a plate group 1 consisting of positive plates, negative plates and separators, the plate group 1 is inserted into a container 2 having a little larger inner dimension than the length of the group 1. After that, the container 2 is pressed by applying a heated metal frame on the outer surfaces of side walls 2' of the container 2 so as to make curved side walls 4. By the means mentioned above, even the pressure applied to a large pasted lead battery, which has large capacity, can be easily increased. Consequently, the life performance of the battery is increased, and assembly of the battery can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a paste-type lead-acid battery for charging and discharging.

The performance of a paste-type lead-acid battery for charging and discharging is determined by the deformation of the positive electrode active material particles and the destruction of their bonds, so various methods have been proposed to extend the life of the batteries by compressing the electrode plates.

However, it is difficult to assemble and manufacture a battery with a coating in which the electrode plates are sufficiently compressed, and it is nearly impossible, especially in the case of a large capacity battery, as it requires a large amount of force.

The purpose of the present invention is to facilitate the production of paste-type lead-acid batteries having S plate groups with increased compression. The purpose is to shrink or deform the battery case by heating after placing it in a tank, and re-shape it to a predetermined size.

The present invention will be explained with reference to drawings showing embodiments: (1)
consists of positive and negative electrode plates and separators.

(2) is the battery case (21 is the wl tank side wall 1 in the direction of the plate group length (
2r is another container wall, and (8) is a space between the electrode plate group and the inside of the container.

When manufacturing batteries, as shown in Figure 1, the electrode plate m(1) is
After placing it in a battery container (2) with an inner dimension slightly larger than the group length, a heated metal frame was placed on the outside of the container side*<2f to form a bent side wall (4) as shown in Figure 2. It is sufficient to eliminate the space (8) between the electrode plate group and the inside of the battery case. At this time, it is important to add a thin layer to the electrode plate group from the outside of the other container wall (2), so that the container side wall (2) has a p
i.

After being reshaped, the plate group is also compressed by other bud surface cuttings).

Instead of bending the side wall (2) of the battery case, it would be possible to heat it for a sufficient amount of time and shrink it by heat while leaving it flat. At this time l! It is preferable to use a battery container that is subjected to heating strain during initial molding and which easily shrinks when heated.

According to the present invention, it is possible to easily assemble and manufacture a large-capacity, large-sized paste storage battery that requires a large degree of pressure on the electrode plates.

[Brief explanation of the drawing]

The drawing is a schematic cross-sectional view of the main part for explaining the manufacturing method of the lead-acid battery according to the present invention.
Figure 2 shows the state in which it is placed in a battery case with a large internal dimension, and the state in which the side wall of the battery case has been reshaped by heating. l... Electrode plate group, 8... Space between the electrode plate group and the inside of the battery case, 2... Battery case, (,,...
Battery side wall. 4...Remolded battery case side wall, 2...
Other tank walls. name 1 way 2 bad

Claims (1)

[Claims] A method for producing a paste-type lead-acid battery, in which a group of electrode plates with straps welded to them is placed in a battery case with an internal dimension larger than the group length, and then heated to shrink or deform the case and re-shape it to the specified dimensions. .