JPS59111255A - Manufacture of lead-acid battery - Google Patents

Abstract

PURPOSE:To form a simple and light weight outer jacket of an assembled electrode group by burying poles of the electrode group in a cover comprising heat melting type synthetic resin, and wrapping the circumference of the electrode group with a heat melting type synthetic resin sheet, and hot-bonding it. CONSTITUTION:Poles 3 and 4 of a plate group A assembled by using three negative plates 1 and two positive piates 2 and separators are burried in a cover 5 comprising polypropylene with their ribs 7 centered. The poles 3 and 4 of the plate group A are grasped with a chuck 24 and kept vertically. Rolled polyethylene sheets 16 and 17 are cut in specified length and placed on the both sides of the plate group A. Then heating plates 22 and 23 which act also as molds having grooves corresponding to container conture are pressed to the plate group. The opening ends of sheets 18 and 19 are heat-bonded, and lapped parts to the cover are bonded to the cover 5. Thereby, a container is formed by easy work.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a lead-acid battery, and more particularly to an exterior method for housing and protecting a group of electrode plates inside.

Conventional structure and its problems Traditionally, for lead-acid batteries, a container and a lid made of synthetic resin were prepared in advance according to the thickness, height, etc. of the electrode group, and the electrode group was placed inside the container. After inserting the battery into the battery case, the lid was integrated into the battery case to provide an exterior packaging.

However, each time the size of the electrode plate group changes, it is necessary to prepare and stock many types of battery cases and lids that can accommodate them, and there are also many molding molds for the battery cases and lids. As a result, there is a problem in that this increases the cost of the battery case and the lid as the outer container, and it is not possible to provide a simple protective outer cover for the electrode plate group.

OBJECT OF THE INVENTION The present invention solves the drawbacks of the conventional examples, and allows the assembled electrode plate group to be packaged easily and lightweight. There is no need to prepare many types of battery containers as in the case of using
The purpose of the present invention is to provide an exterior packaging method that can be applied to many types of storage batteries.

Structure of the Invention In order to achieve the above object, the pole column portion of the assembled electrode plate group is embedded in a lid made of heat-melting synthetic resin, and the periphery of the electrode plate group is wrapped with a heat-melting synthetic resin sheet. Additionally, the open edge of the sheet and the overlapping portion of the sheet and the lid are heat welded to arrange the electrode plate groups in a row.

DESCRIPTION OF EMBODIMENTS The details of the present invention will be explained below with reference to embodiments shown in the drawings.

Figure 1 shows an electrode plate group A assembled using three negative electrode plates '1, two positive electrode plates 2 and a separator, 3 is a negative electrode pole, 41ti positive electrode pole, and these two pole poles are A link-like rib 7 for preventing removal is formed in a part of the holder.

As shown in FIG. 2, the pole columns 3 and 4 are embedded in a lid 5 made of a heat-melting synthetic resin such as polypropylene and having a liquid injection port/safety valve mounting hole 6, centering on the rib 7 portion.

Next, this electrode plate group A is wrapped in one or two sheets of thermofusible resin, for example, a polypropylene sheet 9, and the open end of the sheet and the overlapping portion of the sort and lid are thermally welded 10 to form an exterior in the same way as a container. do. 8 shows a safety valve installed in the access hole 6.

The exterior body including the electrode plate group A can be constructed using the heat-melting resin sheet 9 as shown in FIGS. 4 to 6.

That is, the pole posts 3 and 4 of the pole plate group A are held in an upright state by gripping them with the chuck 24, and the rolled polypropylene sheets J-16 and 17 are cut to a predetermined length as shown in 18.19. Located on both sides to the board group. Next, there is a recess corresponding to the shape of the vertically halved battery case, and inside the hollow,
Molding mold with heat insulators 20 and 21 positioned 22.23
are pressed against the electrode group Af11 from the left and right as shown in FIG. The open ends of the sheets 18 and 19 pressed against the end surfaces of the hot plates 22 and 23 are thermally welded to each other, and the portions overlapping the lid 5 are heated by the hot plates to form a lid around the rib portion of the lid surface. The container is integrally welded with the container, and a battery case-like container as shown in FIG. 6 is easily constructed.

Therefore, according to this method, the cutting length of the note is changed according to the length of the electrode plate group, and when both the width and length of the electrode plate group change, the cutting width and length of the note are changed accordingly. By changing the sheet to wrap the electrode plate group and thermally welding the open ends of the sheet, a battery case-like container can be easily formed and the electrode plate group can be externally packaged. This eliminates the need for containers that can accommodate the width and length of the electrode plate group, and allows multiple types of electrode plate groups to be packaged easily and inexpensively with a single type of heat-melting resin sheet, making it possible to package multiple types of electrode plate groups easily and inexpensively. It is possible to achieve weight reduction compared to .

The batteries shown in FIGS. 3 and 6 are single cells, and in addition to being used as single cells, as shown in FIG. container 30
For example, the three cells described above are housed in series connection, and the positive and negative terminals at both ends and the positive and negative external output terminals 25 and 26 provided on the lid 27 are connected by lead wires 28 and 29. If not, a storage battery with an output voltage of 6 cm can be easily constructed.

When such single cells are assembled into a storage battery, the number of single cells assembled can be freely increased or decreased depending on the purpose, and the output voltage and battery capacity can be easily changed by configuring them in series or series-parallel. I can do it.

Effects of the Invention As described above, according to the method of the present invention, the open edge of the thermofusible resin notebook surrounding the electrode plate group and the overlapping portion of the notebook and the lid made of the thermofusible resin are heated in a hot bath. It is possible to easily and inexpensively construct a lightweight container-like container to enclose the electrode plate group, and even if the size of the electrode plate group changes, the exterior can be sufficiently accommodated.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an assembled electrode plate group according to the present invention;
Fig. 2 is a perspective view of the pole column part of the same electrode plate group embedded in a hot-melt resin lid, and Fig. 3 is a perspective view of an embodiment of the present invention in which the electrode plate group is wrapped and exteriorized with a hot-melt resin sheet. A perspective view of the battery, Figures 4 to 6 are cross-sectional views showing the process of heating and welding resin notebooks to wrap the electrode plate group, and Figure 7 shows an assembled battery made up of a plurality of single cells. FIG. A... Electrode plate group, 3, 4... Pole column, 5... Lid made of heat-fusible resin, 9... Heat-fusible material that forms the shape of the battery case surrounding the electrode plate group. Resin sheet, 10... Heat welding part. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 5 Figure 5

Claims (1)

[Claims] The pole column part of the assembled electrode plate group is embedded in a lid made of heat-melting synthetic resin, and the periphery of the electrode plate group is wrapped with a heat-melting synthetic resin sheet, and the open edge of the sheet and the overlap between the sheet and the lid are A method for manufacturing lead-acid batteries in which the electrode plates are packaged by heat welding.