JPS634367Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rectangular alkaline storage battery in which the connecting portion between the pole plate lug and the pole pole is improved.

Conventional prismatic alkaline storage batteries are shown in Figures 1 and 2.
As shown in the figure, a structure is often used in which a lug bundle 2, which is a group of electrode plate lug groups 1 of the same polarity, is joined to a flat rod-shaped pole post 3 by spot welding.

However, since this structure focuses the plate lug group 1 into one, the plate lug 5 of the plate 4 placed at a distance from the pole pillar 3 is inevitably long, so it is difficult to absorb the force applied in the vertical direction. On the other hand, if the plate lugs 5 are weakly deformed and force is applied repeatedly, the plate lugs 5 may break. In particular, prismatic alkaline storage batteries for space use, which are subject to large shocks and vibrations, have weak mechanical strength and are difficult to put into practical use with conventional structures. In addition, in the conventional structure, the electrode plate lug group 1 is focused into one and spot welded to the pole post 3, which requires a large amount of current.
As a result, the amount of heat generated increases, which has a thermal effect on the thin electrode plate lug 5, resulting in disadvantages such as a decrease in reliability.

The present invention was developed in view of these points, and improves the connection between the electrode plate lug and the pole pillar, improving the mechanical strength of the electrode plate lug, and reducing the heat effect during welding of the electrode plate lug. The present invention provides a prismatic alkaline storage battery with improved reliability.

Embodiments of the present invention will be described in detail below with reference to the drawings.

3 to 7 show an embodiment of the present invention. In the figures, 6 is a connecting rod, and this connecting rod 6 is made by bending a metal plate and has a flange 7 on the top, as shown in FIG. 7 is formed in a cross-sectional shape. Furthermore, three slits 8 are formed in parallel on the bottom surface 6a of the connecting rod 6.

Plural plates 4 on the anode side and cathode plates (not shown) are alternately stacked together via separators (not shown), and the tabs 5 of the plates on the same electrode are respectively attached to the upper part of the same side of the plate 4. It is installed protrudingly. The electrode plate lug 5 is the sixth
As shown in Figure A, it is formed into a tapered shape with its upper part reduced, and shoulders 9, 9 are formed approximately in the middle thereof.

For example, to explain the case of a plate lug group 1 in which the plate lug 5 on the same polarity side is formed of nine pieces, as shown in FIG. 4, the plate lug group 1 is divided into small groups of three pieces each. Three ear bundles 2... are formed.

These three lug bundles 2... are inserted from below into each of the three slits 8 formed on the bottom surface 6a of the connecting rod 6 as shown in FIG. 6A. Make a slit 8 at the tip of each ear bundle 2...
At the same time, the shoulders 9, 9 are brought into contact with the bottom surface 6a of the connecting rod 6. Next, as shown in FIG. 7C, the tips of the protruding ear bundles 2 are inserted through each slit 8 and bent, and then the bent portions 10 are placed on the bottom surface 6a of the connecting rod 6 as shown in FIG. The electrode plate lug 5 and the connecting rod 6 are joined by welding.

Thereafter, the four corners of the upper flange 7 of the connecting rod 6 are spot-welded to the flat plate-shaped lower surface 3a of the pole post 3 using an argon arc, and the connecting rod 6 and the pole post 3 are welded together.
and are assembled as shown in FIGS. 3 and 4.

In the figure, 11 indicates a spot weld,
Further, the connection between the cathode side electrode plate lug and the pole pillar is also performed via a connecting rod in the same manner as described above.

Therefore, in the square alkaline storage battery having the above structure, the electrode plate lug group 1 is divided into small groups to form three lug bundles 2...
Since this is separated into three slits 8 of the connecting rod 6 and joined by passing through them, the length of the plate lug 5 is shorter than that of the conventional one, and the shoulder of the plate lug 5 is Since the connecting rod 9 and the bottom surface 6a of the connecting rod 6 are in close contact with each other, the connecting rod 6 is not easily deformed by vertical vibrations or impacts, and has excellent mechanical strength.

In addition, the connecting rod 6 has a cross-sectional shape and has high rigidity.
The mechanical strength is further improved compared to that of a flat plate, and the provision of the flange 7 makes the pole pillar 3
It is also easy to join with.

In addition, the electrode plate lug group 1 is separated into three lug bundles 2, and each lug bundle 2 is made thinner and welded to the connecting rod 6, so the amount of current required is smaller than in conventional batch welding. The amount of heat generated is also low. In addition, the electrode plate lug 5 is not directly welded to the pole post 3 as in the past, but is welded to a highly heat-resistant connecting rod 6, and then the connecting rod 6 is welded to the pole post 3, so that the thin electrode plate lug 5 is not affected by heat. is further reduced, and overall reliability can be improved.

In the above embodiment, nine plates 4 on the anode side are arranged and three slits 8 are formed in the connecting rod 6, but the slits 8 can be arbitrarily selected depending on the shape and configuration of the storage battery. can.

As explained above, the prismatic alkaline storage battery according to the present invention improves the mechanical strength of the electrode plate lugs, reduces the heat effect during welding of the electrode plate lugs, and improves reliability, especially for space storage batteries. It has remarkable effects such as being able to be used for

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional electrode plate lug connection part, FIG. 2 is a side view of FIG. 1, FIGS. 3 to 7 show an embodiment of the present invention, and FIG. Figure 4 is a front view showing the electrode plate lug connection part, Figure 4 is a side view of Figure 3, Figure 5 is a side view of Figure 3;
The figure is a perspective view of the connecting rod, FIGS.
The figure is a plan view of a connecting rod to which electrode plate lugs are welded. 1... Pole plate ear group, 2... Ear bundle, 3... Pole column, 4
... Pole plate, 5 ... Pole plate ear, 6 ... Connection rod, 7 ...
Flange, 8...Slit, 9...Shoulder, 10...
...Bending part, 11...Welding part.

Claims (1)

[Scope of utility model registration request] The flange 7 of the connecting rod 6, which has a cross-sectional shape with a plurality of slits 8 formed in the bottom surface 6a and a flange 7 provided at the top, is welded to the lower surface 3a of the pole column 3 whose lower surface 3a has a flat plate shape. At the same time, each lug bundle 2, which is formed by dividing the electrode plate lug group 1 of the same polarity into a plurality of small groups, is inserted into each of the plurality of slits 8, and the tip thereof is bent. A rectangular alkaline storage battery characterized by comprising a connecting part between the pole plate lug 5 and the pole post 3, which is formed by welding the part 10 to the bottom surface 6a of the connecting rod 6.