JPH01274357A - Manufacture of separator coated plate for battery - Google Patents

Abstract

PURPOSE:To obtain a thin separator coated plate of a plate body having a satisfactory workability by adding a separator laminating step and a lug cutting step to the expanded plate manufacture line. CONSTITUTION:A band continuous expanded metal grating 5 composed of lead or lead alloy formed in the tandem form through plate lugs 4 is charged with an active material 17 to form continuous plates 6, 6'. The bent-up part of a band separator 8 wound in a roll form is splitted by a splitting roller 9 and made into two pieces of separators 16, 16' by a splitter 10. An adhesive is applied to the side edge parts of the separators by an adhesive coating device 11, and the center parts of the separators 16, 16' are bent in the U-shaped form by a bending roller 14 so that the center lines of the separators are laid along the outer side lines of the band plates. The electrode plates 6, 6' are fitted therein, respectively, and fixed thereto by a pressure fitting roller 15. Further, the cutting part 21 indicated in the center of the plate lug is cut down by a cutter 13a and separated into two series of band plates. The obtained continuous plates are cut down by a cutter 19 to obtain separator coated plates 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a separator-coated electrode plate for a storage battery using an expanded grid manufactured by processing a thin plate of lead or a lead alloy.

Conventional technology and its problems As shown in Japanese Patent Application Laid-Open No. 50-63443, a storage battery electrode plate in which an expanded lattice is filled with an active material and thin paper is adhered to both sides has been proposed. ing. The purpose of the thin paper that comes into contact with the surface of the electrode plate is to prevent the active material from falling off when the continuously produced strip-shaped electrode plate is cut into veneers of a certain size using a slitter, etc. This is to facilitate handling in case of

However, in recent years, as gratings have become lighter and thinner, their mechanical strength has decreased, and when they are made into a single plate, they tend to deform and are difficult to handle.

For this reason, it is conceivable to make the above-mentioned thin paper thicker to strengthen the mechanical strength, but since the above-mentioned thin paper is originally only in close contact with the active material through the moisture, making the paper thicker increases the moisture content. It is absorbed into the inside of the paper, resulting in a lack of moisture, which deteriorates the adhesion of the paper and causes it to peel off easily, causing deformation of the electrode plate.
There was a drawback that the active material also fell off.

On the other hand, many electrode plates having a structure in which a grid and a separator are integrated have been proposed, but it has been difficult to put them into practical use.

Means for Solving the Problems The present invention provides a method for manufacturing a separator-coated electrode plate that does not have the above-mentioned problems. A lattice is filled with an active material to form two consecutive left and right continuous electrode plates, and an adhesive is applied along the side edges or along the side edges and center line of a band-shaped separator having a width that covers both sides of the continuous horizontal plate, and the separator The center line of the separator is placed along the outer edge of the continuous horizontal plate, the separator is folded back along the center line, the continuous electrode plate is sandwiched between the separators, the folded separators are bonded by pressure through a pressure roller, and the separator The method is characterized in that two series of continuous electrode plates are separated one by one by cutting the central part of the electrode plate lugs that are not covered by the electrode, and then each of the two series of continuous electrode plates is cut into a predetermined plate width dimension.

Note that a strip-shaped separator having a width equivalent to two electrode plates may be cut into a width equivalent to one electrode using a slitter or the like, and then arranged on the continuous electrode plate. Further, when using a thick separator or a large separator with a glass mat attached, the back of the separator may be cut in advance and then folded back.

Further, a thin paper may be placed immediately after filling the active material to prevent the active material from falling off the electrode plates before being sandwiched between separators.

Before sandwiching the continuous electrode plate between the separators, make a cut in advance at the edge of the electrode plate, which will be covered by the separator and cannot be cut after the separators are pasted together. The ears may be completely cut off to separate the two continuous electrode plates by applying a mechanical force such as a light impact or tension to the cut portion so as not to deform the electrode plates.

Example Hereinafter, the present invention will be specifically explained using the drawings.

FIG. 1 shows an example of a storage battery electrode plate obtained by the manufacturing method of the present invention, in which one separator 2 is bent,
The bent part is placed on the lower part of the electrode plate 1, and adhesive 3 is applied only to the upper part of the electrode plate to fix it. In this embodiment, adhesive is applied only to the upper part of the electrode plate, but adhesive may also be applied to the lower part for reinforcement. In addition, 4 is an electrode plate lug.

The electrode plate shown in FIG. 1 is manufactured by the method shown in FIG. That is, the active material 17 is filled from the active material filling machine 18 into the continuous expanded grid 5 made of lead or lead alloy formed in two series through the electrode plate ears 4 to form the continuous electrode plates 6, 6'. shall be.

On the other hand, the folded part of the rolled separator strip 8 is split into strips using a splitting roller 9, and then separated into two strip separators 16 and 16' by a slitter 10, which are then glued to the side edges of each separator strip. Agent coating device 11
After applying the adhesive 3- by, supplying the separator so that the center line of the separator is along the outer edge (lower end) of the strip-shaped electrode plate,
Creases are made using rollers 12, 12' and folding roller 1.
4, the center portion of each strip separator 16, 16' is bent into a U-shape.

Continuous electrode plates 6 and 6' are respectively sandwiched between the bent band-shaped separators 16 and 16' and fixed by a pressure roller 15. Furthermore, the central part of the electrode plate ear, for example, as shown in Fig. 3 (
The cutting point 21 shown in b) is cut using the electrode plate edge cutting cutter 138.
The two series of strip-shaped electrode plates are separated into series by completely cutting the plate.

The separator-coated electrode plate 7 as shown in FIG. 1 is obtained by cutting the separator-covered continuous electrode plate thus obtained into a required electrode width using the electrode plate cutting cutter 19. The adhesive was applied in a broken line shape at the top.

In the above embodiment, the electrode plate lugs were cut after fixing the separator to the electrode plates, but before the strip separator 8 was fixed, the electrode plate lugs were cut using the electrode plate edge cutting cutter 13b as shown in FIG. 3(A). A straight cut is made at the notch portion 20 shown in FIG. By applying a mechanical force such as tension by pulling the continuous plates 6, 6' from side to side, the ears may be completely cut off and the two series of continuous plates may be separated into series. The other steps are the same as in the above embodiment.

Effects of the Invention As described above, according to the present invention, by adding the separator bonding process and the edge cutting process to the conventional expanded electrode plate production line, handling is extremely easy and workability is good. It is possible to obtain a separator-covered electrode plate whose main body has a thickness of 111 mm or less. In addition, since the ears are completely cut off after the separator is fixed, the band-shaped electrode plates do not shift, and the positioning of the separator bonding can be easily determined, making it possible to obtain a stable product with good dimensional accuracy.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are partially cut-out front and side views of a coated electrode plate obtained by an embodiment of the manufacturing method of the present invention, and Figures 2 (a) and (b) are diagrams showing the manufacturing method of the present invention. FIGS. 3A and 3B are top views and side views of the production process showing one embodiment of the present invention, respectively. FIGS. 1... Electrode plate 2... Separator 3... Adhesive 4...
・Pole plate ears 5...Continuous lattice 7...
... Covered electrode plate 8 ... Band-shaped separator 14 ... Separator bending roller 15 ...
... Pressure roller 17 ... Active material')r
1 ward

Claims (2)

[Claims] (1) A continuous lattice made of lead or lead alloy formed in two rows through electrode plate ears is filled with an active material to form two continuous electrode plates on the left and right, and has a width that covers both sides of the continuous electrode plate. Apply adhesive along the side edge or side edge and center line of the strip-shaped separator, arrange the center line of the separator along the outer edge of each of the two series of continuous electrode plates, and attach the separator at the center line. Fold back and sandwich the continuous electrode plates, press and bond the folded separators together through a pressure roller, cut the plate lugs to separate the left and right continuous electrode plates, and then cut the plates to the specified width. A method for producing a separator-covered electrode plate for a storage battery, characterized by: (2) Before sandwiching the continuous electrode plate between strip-shaped separators, make a notch in the plate lug, and after fixing the separator, apply mechanical force to the cut part to completely cut the plate lug and make two series. 2. A method for producing a separator-covered electrode plate for a storage battery according to claim 1, wherein the continuous electrode plate is separated and cut into a predetermined electrode plate width.