JPH02223149A - Manufacture of lead-acid battery - Google Patents

Abstract

PURPOSE:To improve the work efficiency and reduce the production cost by forming an inter-cell connection section connecting both straps of a positive electrode and a negative electrode, welding electrode plate groups, and connecting cells. CONSTITUTION:When adjacent electrode plate groups 4 are welded and connected, straps 8c for connecting the welding straps 8a and 8b of electrode plate groups 4 and inter-cell electrode plate groups can be easily welded to each other in the same process, thus the work efficiency is improved. Two patch metals 7 are extracted in the separating direction after welding is completed, thus the patch metals 7 can be easily removed from below inter-cell connection sections 8c, and good inter-cell connection section 8c are formed. No electrode pole connected to a strap 8 is used, thus the setting and welding work of the electrode pole and the material and production cost are not required, and the defective welding of the electrode pole is prevented. The labor for the production work and the production cost are reduced accordingly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of manufacturing a lead-acid battery in which electrode plates of adjacent cells are interconnected.

[Prior Art] A conventional method generally used to manufacture a lead-acid battery having the above structure will be described with reference to FIGS. , retainers, and cathode plates are arranged alternately to form the required number of groups (three groups in this example).
Unwelded electrode plate groups 12 are formed, appropriate spacing plates are inserted between each electrode plate group 12, side plates 11a are applied to the ends of the electrode plate groups, and the frame is lightly tightened. Then, between the rows of the aligned anode plate ears 13 and the rows of the cathode plate ears 14, as shown by arrow A, a stopper 15 extending in the length direction of the plate is installed. Next, the anode-side welding jig 16 and the cathode-side welding jig 17, each of which is formed in a comb shape with a recess 16a or 17a having a plurality of cuts, are inserted into the can cuts as shown by arrow B. While fitting the ears 13 and 14, the tips of each are brought into contact with both sides of the pad 15 in the width direction. In this way, as shown in FIG. 5, the upper side of the electrode plate group is covered with both welding jigs 16, 17 and the pad 15, and the tips of the respective ears protrude in each part of the recesses 16a, 17a. The pole pole 18 is manually installed in the pole pole installation portion provided. Then, the tip of the lead wire 20 is sequentially exposed to each of the recesses 16a and 17a, and while the tip is heated and melted by the burner 21, the tip of each lug is also melted into each of the recesses 16 and 17a. Strap 1 connecting each plate to each other
form 9.

When the above work is completed, the frame tightening by the aforementioned holding frame 11 and side plate 11a is released, and each welding jig 16, 1
7 and the pad 15 are removed, and each electrode plate group 12 and spacer plate are taken out from inside the holding frame 11. Then, replace each of these electrode plate groups and spacing plates with the regular battery case 2 as shown in Figure 6.
2 in a predetermined positional relationship, and while applying a bridge mask 23 above the electrode plate group, predetermined pole columns 18 are heated and welded together with a burner 21. Thereafter, the bridge mask 23 is removed, and the electrode plate group welding and intercell connection work in storage battery manufacturing is completed for the first time.

[Problems to be Solved by the Invention] The above-mentioned conventional electrode plate group welding and cell-to-cell connection operations in the manufacture of lead-acid batteries are as follows: (1) The work process involves multiple steps, which is time-consuming and inefficient.

(2) In the case of small batteries, the pole poles are thin and difficult to set in the welding jig, and if the operator is inexperienced, the pole poles may melt too much during welding and fall over, resulting in poor welding.

(3) The pole column parts are separately cast and prepared, which requires time and expense to manufacture and manage the parts.

(4) Many jigs and tools such as a holding frame, a spacer plate, a welding jig, a pad, and a bridge mask are required, which increases the cost and is uneconomical.

The purpose of the present invention is to reduce the number of work steps, reduce the number of workers and parts, and reduce the cost of manufacturing parts jigs and tools.
The purpose of this invention is to propose a method for manufacturing lead-acid batteries that can improve work efficiency and reduce manufacturing costs.

[Means for Solving the Problems] In order to achieve the above object, the method for manufacturing a lead-acid battery according to the present invention, as shown in FIG. 1 and FIG. A metal comb in which a plurality of electrode plate groups (4) each comprising a plurality of anode plates and a cathode plate are arranged adjacent to each other, and each of the metal combs is provided with a recessed portion having a plurality of cuts into which the ears are inserted. A tooth-shaped anode side welding jig (5), a cathode side welding jig (6), and a thin step part (7a) on one end side.
) and attach the anode side welding jig (5) to the anode plate lug (2) of one of the two adjacent electrode plate groups (4). ) into the cathode plate ears (3) of the other electrode plate group (4), and fit the cuts in the cathode side welding jig (6) into both welding jigs (5). ,
(6) are spaced apart from each other at a predetermined interval, and each of the recesses (5
a), (6a) are installed facing each other, and the two pads (7) are attached to both the welding jigs (5), (
6) to connect the one end side of each pad (7) to each welding jig (5), the recess (5a) of (6),
(6a) Abut against each other at the center position in the length direction and install. The recesses (5a) and (6a) of each of the welding jigs are
) and the steps (7a) of both pads are supplied with molten lead to connect the anode plate ears (2) and the anode strap (8a) and the cathode plate ears (2). 3)
At the same time, a cathode strap (8b) is formed to connect the two straps (8a) and (8b), and an inter-cell connection part (8C) is formed to connect the straps (8a) and (8b), thereby performing plate group welding and inter-cell connection.

In addition, the electrode plate group welding and the cell electrode plate group welding are performed on adjacent electrode plate groups (4) arranged in an unwelded state in a plurality of cells separated by partition walls (1a) in the battery case (1). It is recommended to make an intermediate connection.

[Function] The method for manufacturing a lead-acid battery according to the present invention includes a method for manufacturing a lead-acid battery according to the present invention.
For the welding connection in step 4), the welding straps of each electrode plate group (4) and the straps for connecting the electrode plate groups between cells can be easily welded together in the same process, improving work efficiency. After the above welding is completed, by pulling the two pads (7) away from each other, the metal (7) can be easily removed from below the cell-to-cell connection, resulting in a good cell-to-cell connection. is formed. In addition, in the manufacturing method of the present invention, since the pole pole connected to the strap is not used, there is no need for setting and welding of the pole pole, as well as materials and manufacturing costs, and there is no risk of poor welding of the pole pole. , the labor of manufacturing work and manufacturing cost are reduced.

Furthermore, instead of forming and welding the electrode plate group of each cell of the battery case in advance outside the case and then mounting it on each cell, we can place the unwelded electrode plate group (4) directly inside each cell. After plate group welding and cell-to-cell connections, the electrode plate group is formed.

The work steps for welding and inter-cell connections, as well as the types and number of jigs and tools required for the work, are reduced.

[Example] Next, an example of the present invention will be described with reference to FIGS. 1 to 3. In an embodiment of the present invention, first, a retainer is interposed between an anode plate having an ear portion 2 projecting from the top surface of the battery case 1 to a height of 4 to 5 mm, and a cathode plate having a similar ear portion 3. Then, the electrode plate group 4 is formed and arranged in each cell partitioned by the partition wall 1a of the battery case 1. Next, a recess 5a is formed, each of which is made of a metal with good thermal diffusivity such as copper, and has a plurality of cuts into which the anode plate ears 2 of the electrode plate group 4 are inserted.
A comb-shaped anode-side welding jig 5 with Place it on the upper edge and let the top of each ear 2.3 protrude from the can slit. next,
Two pads 7 each having a thin stepped portion 7a on the tip side are inserted between the welding jigs 5 and 6 and placed on the upper part of the partition wall 1a, and the opposing recesses 5a and 6 are placed between the welding jigs 5 and 6. Bring the tips of each to abut against each other at the center position of a.

Then, a burner supplies molten lead to a series of recesses formed by the recesses 5a, 6a and step 7a,
At the same time, the anode strap 8a is formed in the recess 5a, and the cathode strap 8b is formed in the recess 6a.
An inter-cell connection part 8c is formed on the step part 7a to connect both straps 8a and 8b over the upper end of the step part 7a. In the manner described above, the respective electrode plate groups 4 in adjacent cells are interconnected. Negative (positive) end cell plate group that does not require interconnection with other plate groups
To form the pole side strap, the welding jig 6 (5
) and - the elongated pads 7B of the accessory are placed adjacently and juxtaposed on the upper edge of the battery case 1 as shown in FIG.
Insert the ear portion 3 (2) into the cut in (5a), and
a (5a) is formed by supplying molten lead as described above.

When welding at all required locations is completed as described above, the welding jigs 5, 6, pads 7, 7B, etc. are removed to complete the electrode plate group welding and inter-cell connection work. Thereafter, an electrolytic solution is poured into the container 1, and a lid 10 is bonded to the upper surface of the container 1 with an adhesive sealant 9 interposed therebetween. As shown in FIG. 3, the battery of this example has ear parts 2, 3, straps 8a, 8b
and the inter-cell connection part 8C, the inside of the lid 10 and the battery case partition 1
An adhesive sealant 9 is interposed between the upper side of the battery case 1 and the lid 10, and the airtightness between the battery case 1 and the lid 10 and each cell is maintained.

[Effects of the Invention] As described above, according to the manufacturing method of the present invention, when welding and connecting electrode groups of adjacent cells in the manufacture of lead-acid batteries, welding straps of each electrode group and intercell electrode group connections are performed. The straps can be easily welded together in the same process, thereby improving work efficiency. The above cell-to-cell connection welding is performed by placing two pads with a thin step on one end on the upper part of the battery case's bulkhead with their one ends butted against each other. can be easily removed, and a good inter-cell connection can be formed at a required interval above the partition wall. Further, according to the present invention,
Since the poles connected to the straps are not used, it is not necessary to manually set the poles in a welding jig and weld them to the electrode plate group, and to weld bridges between poles between cells, resulting in greater efficiency. In addition to improving
It is possible to improve welding performance. Furthermore, since poles are not used, material costs and manufacturing management costs are unnecessary, and the manufacturing cost of the battery can be reduced accordingly. Further, according to the invention of claim (2), compared to the case where the electrode plate group of the cell outside the battery case is formed and welded in advance outside the battery case and then mounted on each cell,
Work process for forming electrode plate groups, welding, and connecting cells;
In addition, the types and number of jigs and tools required for the work can be reduced, and the number of man-hours and cost of manufacturing the battery can be reduced.

In summary, according to the present invention, welding of adjacent electrode plate groups and connection between cells in the manufacture of lead-acid batteries can be performed with good workability and relatively simple jigs, resulting in good quality and low manufacturing cost. It is possible to easily manufacture a lead-acid battery with a reduced amount.

[Brief explanation of the drawing]

FIGS. 1 and 2 are perspective views showing an embodiment of the present invention, and FIG. 3 is a partial sectional view showing the configuration of main parts in the same embodiment.
FIGS. 4 to 6 are perspective views showing examples of construction methods used in conventional lead-acid battery manufacturing. DESCRIPTION OF SYMBOLS 1... Battery case, 1a... Partition wall, 2... Anode plate ear part,
3... Cathode plate ear portion, 4... Electrode plate group, 5... Anode side welding jig, 6... Cathode side welding jig, 5a, 6a...
Recessed part, 7... Batch, 7a... Step part, 8a... Anode strap, 8b... Cathode strap, 8c...
Inter-cell connections.

Claims (2)

[Claims] (1) A plurality of electrode plate groups each including a plurality of anode plates and a cathode plate each having a lug are arranged adjacent to each other, each having a recess having a plurality of cuts into which the lug is inserted. Using a comb-shaped metal anode-side welding jig and a cathode-side welding jig, as well as two elongated pads with a thin step on one end, one pole of two adjacent electrode plate groups is used. The cut of the anode side welding jig is fitted into the anode plate lug of the other plate group, and the cut of the cathode side welding jig is fitted with the cathode plate lug of the other plate group. The tools are placed at a predetermined distance from each other with their recesses facing each other, and the two pads are inserted between the two welding jigs so that the one end side of each pad is connected to the welding jigs. The recesses of the welding tools are placed abutting each other at the center in the length direction, and molten lead is supplied to a series of recesses formed by the recesses of each of the welding jigs and the steps of both pads, and the anode plate lug is An anode strap that connects the anode strap and a cathode strap that connects the cathode plate ears are simultaneously formed, and at the same time, an inter-cell connection section that connects both straps is formed to perform electrode plate group welding and inter-cell connection. A method for manufacturing lead-acid batteries. (2) The electrode plate group welding and the cell-to-cell connection are performed on adjacent electrode plate groups arranged in an unwelded state in a plurality of cells separated by partition walls in the battery case. The method for manufacturing a lead-acid battery according to claim (1).