JP2591051B2 - Manufacturing method of lead storage battery - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a lead storage battery having a monoblock structure, and more particularly, to a method for serially connecting electrode groups in adjacent cell chambers via a battery case partition. An object of the present invention is to provide an improved lead-acid battery that can be manufactured easily and at low cost.

FIG. 3 shows a cross-sectional view of a lead-acid battery manufactured by a conventional method. In the figure, reference numeral 1 denotes an electrode plate group including a positive electrode plate, a negative electrode plate, and a separator for separating the two electrode plates. According to the conventional manufacturing method, the lugs 1a of the same-polarity electrode group constituting the electrode group of one cell are welded using a comb-shaped welding jig (not shown) while supplementing with lead, and the same in the same cell chamber. A strap, which is a parallel connection between the polar plates, and a pole portion 2a extending vertically upward from the strap 2 are integrally formed. A battery case 3 made of ABS resin, etc., with the electrode plate group 1 on which a strap is formed.
And the upper end of the battery case partition wall 3a is welded with a jig (not shown) while supplementing lead with the tip of a pole 2a extending vertically upward from the strap 2,
An inter-cell connection portion 4 is formed with a strap of an electrode group in an adjacent cell chamber via a battery case partition wall. Next, the lid 5 made of ABS resin or the like is adhered to the opening surface of the battery case with epoxy resin or urethane resin, and at the same time, the connecting rod is placed in a recess provided inside the lid, and the periphery thereof is covered with an adhesive 6. To seal between the cell chambers. Thereafter, terminals and safety valves are attached to complete the lead storage battery.

As described above, according to the conventional manufacturing method, two welding steps are required, and the workability and strength of the welding jig to be used are taken into consideration, and between the electrode groups adjacent via the battery case partition wall. However, there is a drawback in that the connection portion becomes large, the amount of adhesive for burying the connection portion between cells becomes large, and the space in the battery cannot be made large, so that the work of injecting the electrolyte is difficult.

Means for Solving the Problems In order to eliminate the above-mentioned drawbacks, the present invention provides a mono-block lead-acid battery, in which a flat connecting rod is used between the straps of adjacent electrode plates via a battery case partition. After being integrally connected, the central portion of the connecting rod is bent upward, the electrode group is inserted into the battery case, and the strap in each cell chamber is placed at a position lower than the upper end of the battery case partition. Is disposed at a position higher than the upper end of the battery case partition wall, a lid having an adhesive groove and a connection rod receiving recess is inverted, and the adhesive groove and the recess are filled with an adhesive, and the curved connection rod is removed. The battery case in which the electrode group is inserted is inverted, and the battery case and the lid are bonded in a state where the bent portion of the connecting rod is lowered onto the lid filled with the connecting agent and the curved portion of the connecting rod is embedded in the adhesive. A method for manufacturing a lead storage battery is provided.

Embodiment An embodiment of the present invention will be described below with reference to FIG.

In the drawing, reference numeral 1 denotes a group of electrodes composed of a positive electrode plate, a negative electrode plate and a separator for separating the two electrode plates, and a strap 2 which is a parallel connection part of the same polarity electrode plates in the same cell chamber.
And a strap for connecting the same polarity electrode plates of the other electrode group in the cell chamber adjacent to the cell chamber in parallel with each other and a flat connecting rod 4 for connecting them in series, and then forming the connection. The center part of the rail is bent upward by the bending die 7. still,
After forming the straps of the adjacent electrode groups, the connecting rods may be integrated by welding or may be integrally molded simultaneously with the straps.

The electrode group 1 connected via the connection rod 4 curved in an inverted U-shape as described above is inserted into the battery case 3, and the strap 2 of the electrode group 1 in each cell chamber is connected to the battery case partition 3a. The connecting rod 4 curved lower than the upper end of the battery case and arranged in an inverted U-shape is disposed so as to straddle the upper end of the battery case partition wall. Then, the adhesive 6 is filled into the connection groove and the connection rod receiving recess formed in the outer peripheral portion of the lid placed upside down, and the above-mentioned electrode group is inserted from above, and the inverted battery case is lowered. The tank and the lid are bonded together, and a connecting rod protruding above the partition is buried in the adhesive 6 in the concave portion on the back of the lid.

FIG. 2 is a sectional view of a lead storage battery manufactured by the method of the present invention.

According to the present invention, according to the present invention, the same polarity electrode plates of the electrode group in the same cell chamber and the different polarity electrodes of the electrode groups in the adjacent cell chambers via the battery case partition, which conventionally required two steps, were used. A series connection can be formed at a time, which reduces production man-hours, reduces the amount of adhesive required to embed the connecting rod in the adhesive in the recess behind the lid, and increases the space inside the battery. In addition, there is an advantage that the work of injecting the electrolytic solution is facilitated.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of the method of the present invention. FIG. 2 is a sectional view of a lead-acid battery manufactured by the method of the present invention, and FIG. 3 is a sectional view of a lead-acid battery manufactured by the conventional method. DESCRIPTION OF SYMBOLS 1 ... Electrode group, 1a ... Ear part 2 ... Strap 3 ... Battery case 3a ... Battery case partition wall 4, ... Connecting rod 5 ... Lid, 6 ... Adhesive 7 ... Bending fitting

Claims (1)

(57) [Claims] 1. In a lead storage battery having a monoblock structure, straps of adjacent electrode plates are integrally connected to each other via a battery case partition wall by a flat connecting rod, and then a central portion of the connecting rod is directed upward. In the curve, the electrode group is inserted into the battery case and the strap of each cell chamber is placed at a position lower than the upper end of the battery case partition, and the curved portion of the connecting rod is placed at a position higher than the upper end of the battery case partition. Placed, the lid having the adhesive groove and the connection rod receiving recess is inverted, the adhesive groove and the recess are filled with an adhesive, and the battery case into which the electrode plate group having the curved connection rod is inserted is inverted, A method for manufacturing a lead-acid battery, wherein the battery case and the lid are bonded in a state where the curved portion of the connection rod is lowered on the lid filled with the connection agent and the curved portion is embedded in the adhesive.