JP2002134105A - Method of producing electrode plate for lead acid battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of producing an electrode plate for a lead acid battery for eliminating the need for a large space for aging and drying and permitting aging and drying without causing non-uniformity. SOLUTION: The method of producing the electrode plate for the lead acid battery comprises the first step of filling an active material paste in a lattice to produce a non-formed electrode plate and the second step of aging and drying the non-formed electrode plate produced in the first step. In the second step, the plurality of non-formed electrode plates are partially overlapped with one another.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electrode plate for a lead storage battery.

[0002]

2. Description of the Related Art Paste-type lead storage batteries are prepared by kneading lead, lead oxide, water, dilute sulfuric acid, and other additives as necessary into a paste, and converting the mixture into a lead casting grid or expanded grid. An unformed electrode plate is prepared by filling (at this time, thin paper called paste paper is placed on both sides of the electrode plate to prevent the active material from falling off), then aged and dried, and then combined with a separator. It is manufactured by assembling electrode plates, assembling them in a battery case, injecting dilute sulfuric acid, and then forming.

For aging and drying, as shown in FIG. 1, if the electrode plate uses a casting grid having a so-called electrode lug 1, a method of hanging it on a rack 2 is possible, as shown in FIG. Such a method cannot be adopted for a simple expanded lattice. Therefore, a method of unavoidably stacking a plurality of unformed electrode plates 3 as shown in FIG. 3 is adopted. FIG. 3A is a plan view, and FIG. 3B is a front view.

[0004]

However, such an aging and drying method has disadvantages such as sticking of the electrodes, peeling of the paste paper, and uneven aging and drying. There is a strong possibility that such a defect directly leads to deterioration of the performance of the lead storage battery. Without stacking unformed electrode plates,
Such a problem can be solved by adopting a method of arranging one by one, but it is not practical because a large space for aging and drying is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a lead which does not require a large space for aging and drying and which can perform aging and drying evenly. An object of the present invention is to provide a method for manufacturing an electrode plate for a storage battery.

[0006]

According to the first aspect of the present invention,
A first step of filling the grid with the active material paste to produce an unformed electrode plate, and a second step of aging and drying the unformed electrode plate manufactured in the first step; A method for manufacturing an electrode plate for a lead-acid battery, wherein the second step is performed in a state where a plurality of unformed electrode plates are partially stacked.

According to a second aspect of the present invention, in the method for manufacturing a lead-acid battery electrode plate according to the first aspect, a plurality of unformed electrode plates are continuously and partially stacked in a horizontal direction.

According to a third aspect of the present invention, the second step includes the step of:
Aging step of 0-50 ° C × 8-20 hours, 70-80
The method for producing an electrode plate for a lead-acid battery according to claim 1 or 2, further comprising a drying step of ゜ C × 8 to 20 hours.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The method for manufacturing an electrode plate for a lead storage battery according to the present invention comprises a first step in which a grid is filled with an active material paste to manufacture an unformed electrode plate, and the first step. A second step of aging and drying the unformed electrode plate, wherein the second step is performed in a state where a plurality of unformed electrode plates are partially stacked. Features. According to the present invention, as compared to the conventional method of stacking the entire surface of an unformed electrode plate, the ventilation of each unformed electrode plate surface is also good, sticking of the electrode plates, aging / dryness unevenness, paste paper peeling, etc. Problems are reduced. The degree of partial overlap is an item that can be appropriately set in consideration of the size of the electrode plate and the aging and drying temperature conditions.

According to the second aspect of the present invention, as shown in FIG. 4, a plurality of unformed electrode plates are successively and partially stacked in the horizontal direction (this can also be expressed as "shogi dashi"). A method for manufacturing an electrode plate for a lead storage battery according to claim 1, wherein According to this, problems such as sticking of the plates, aging and drying unevenness, and peeling of the paste paper are reduced, and by causing the plates from the left side of the drawing, collection of the aging and dried plates is easy. There is also an effect that can be performed. FIG. 4A is a plan view, and FIG. 4B is a side view.

According to a third aspect of the present invention, the second step includes the step of:
Aging step of 0-50 ° C × 8-20 hours, 70-80
゜ C × 8 to 20 hours drying step, and if the production method according to claim 1 or 2 is carried out under these conditions, it is possible to obtain a very good electrode plate for a lead storage battery. Can be.

[0012]

EXAMPLE Water was added at a rate of 12 cc to 100 g of lead powder and kneaded, and then kneaded while dilute sulfuric acid having a specific gravity of 1.40 was dropped at a rate of 5 cc.
3 g, carbon 0.15 g, and lignin 0.2 g were added to produce an active material paste, and this active material paste was further expanded with a lead-calcium alloy expanded lattice (the dimensions were filled into the paste paper, and the paste paper was placed on each electrode plate). And arranged on both sides.
The electrode plate dimensions are 72 mm × 44 mm.

A group of four plates in which the above-mentioned electrode plates are stacked by 40 in accordance with the conventional method shown in FIG. 3, and a group of four groups in which 40 plates are horizontally arranged in a shogi-like manner in accordance with the method of the present invention shown in FIG. Was prepared. In the latter case, the overlapping portion of each electrode plate is about 30 mm in the horizontal direction. Reference numeral 4 denotes a tray on which the electrode plate is placed.

These electrode groups were aged at 45 ° C. × 12 hours and then dried at 75 ° C. × 12 hours. FIG. 5 shows the situation after the completion of these steps. As is clear from these results, in the case of the present invention, drying was performed very well, and sticking between the electrode plates and peeling of the paste paper were not observed.

The aging temperature and time vary depending on the size of the electrode plate. However, in the method of aging at 40 to 50 ° C. for 8 to 20 hours, drying at 70 to 80 ° C. for 8 to 20 hours. Thus, the superiority of the present invention was confirmed. In addition, the same applies to the cast grid as well as the expanded grid.

[0016]

As described above, according to the present invention,
A large space is not required for aging and drying, and the aging and drying of the lead storage battery electrode plate can be performed evenly.

[Brief description of the drawings]

FIG. 1 is a diagram showing a conventional example.

FIG. 2 is a diagram showing an expanded grating.

FIG. 3 is a diagram showing a conventional example.

FIG. 4 is a diagram showing an embodiment.

FIG. 5 is a diagram showing test results.

[Explanation of symbols]

 1 Electrode ear 2 Rack 3 Electrode 4 Tray

Claims (3)

[Claims] 1. A first step of filling a grid with an active material paste to produce an unchemically polarized electrode plate, and a second step of aging and drying the unchemically polarized electrode plate produced in the first step. A method for manufacturing a lead storage battery electrode plate, comprising: performing the second step in a state in which a plurality of unformed electrode plates are partially stacked. 2. The method for producing an electrode plate for a lead storage battery according to claim 1, wherein a plurality of unformed electrode plates are successively and partially stacked in the horizontal direction. 3. The method according to claim 2, wherein the second step is performed at 40 to 50 ° C. × 8 to 20 ° C.
The method for producing an electrode plate for a lead-acid battery according to claim 1 or 2, comprising a aging step for a period of time and a drying step for a period of 70 to 80 ° C x 8 to 20 hours.