JPS6348392B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a storage battery in which straps and intercell connections are simultaneously cast and integrated with plate lugs.

Conventionally, methods for manufacturing storage batteries as described above have been proposed, but the inter-cell connections cannot be formed into a regular shape due to the buildup of molten lead. In contact with the battery compartment partition wall,
Another drawback is that the resin sealing between the partition wall and the inter-cell connection portion is incomplete.

The present invention has been made in view of the above points, and includes a step of laminating a plurality of anode plates and cathode plates with separators interposed therebetween, and inserting each of the laminated electrode groups into cells of a battery case and inverting them. a step of lowering the battery case onto a mold to form straps, inter-cell connections and pole columns on the pole group, and a step of arranging a lid on the battery case to form a storage battery. In the manufacturing method, the mold is formed of a fixed mold in which the strap, the inter-cell connection part and the pole pillar are formed, and a movable mold in which the part corresponding to the cell partition wall of the inter-cell connection part is formed, The feature is that the shape of the portion corresponding to the battery case partition wall of the inter-cell connection portion is made constant using a mold.

Hereinafter, the present invention will be explained with reference to the drawings of one embodiment thereof. In other words, in FIG. 1, an anode plate 1 and a cathode plate 2 are stacked with a separator 3 in between, and this is inserted halfway into a battery case 4, turned upside down, and connected to a strap, an intercell connection part, and an electrode. It is formed by a fixed mold 5 with pillars engraved thereon, and a movable mold 7 having a width of 2 mm and pressed by a spring 6 so as to come into contact with the portion of the mold 5 that corresponds to the battery case partition wall at the connection between cells. FIG. 2 is a perspective view at a time when molten lead 8 is poured into a mold and the lugs of the anode plate 1 and cathode plate 2 described above are about to be dipped into the molten lead 8. Note that in the drawings, jigs for the electrode plate and the battery case, movable devices, movable devices for the mold, devices for casting into the mold, etc. are omitted so that the present invention can be more clearly understood.

The lugs of the anode plate 1 and the cathode plate 2 are dipped into the molten lead 8 and pulled out after the molten lead 8 has solidified, opening the movable mold 7 and forming the strap, intercell connections and pole posts, thus forming the pole group. is completed. At this time, the inter-cell connection part has a length of at least 1 mm on all four sides.
Since it is surrounded by the fixed mold 5 and the movable mold 7, it can be molded into a fixed shape, thereby preventing incomplete sealing of the part.

Thereafter, the electrode group is completely inserted into the battery case 4, the inter-cell connection portions are molded with resin, and a lid is provided to complete the storage battery.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to this.
Various embodiments are possible without departing from the spirit of the invention. For example, in the above embodiment, after inserting the positive and negative electrode plates and the separator halfway into the battery case, the strap and the inter-cell connection part were manufactured.
Fix the positive and negative electrode plates and the separator with a suitable jig, place the ears of these electrode plates in a mold, pour in molten lead, manufacture straps and inter-cell connections, and obtain the electrode group. After this, the electrode group may be inserted into a prepared battery case.

As mentioned above, the present invention has extremely high industrial value.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention.

Claims (1)

[Claims] 1. A plurality of anode plates 1 and cathode plates 2 are separated by a separator 3.
a step of stacking the laminated electrode groups through the electrodes, a step of inserting the laminated electrode groups into the cells of the battery container 4 and inverting them, and lowering the battery container 4 onto the mold to attach straps to the electrode groups and connect the cells. In the method for manufacturing a storage battery, the method includes a step of forming a cell-to-cell connection portion and a pole column, and a step of placing a lid on the battery case 4 to form a storage battery, the mold being fixed with a strap and a fixing portion in which the inter-cell connection portion and the pole column are formed. It is formed by a mold 5 and a movable mold 7 in which a part corresponding to the battery case partition wall of the inter-cell connection part is formed, and the shape of the part corresponding to the battery case partition wall of the inter-cell connection part is formed by the movable mold 7. A method for manufacturing a storage battery, characterized by keeping the battery constant.