JPH02223153A - Electrode plate for alkaline storage battery - Google Patents

Abstract

PURPOSE:To obtain an electrode plate for an alkaline storage battery with excellent current collecting efficiency, productivity and yield of the electrode plate by fitting a current collecting lead plate by caulking. CONSTITUTION:A pasty active material is filled on a core body made of a metal fiber mat sintered with nickel fibers, it is cut into a shape suitable with a battery size after drying, and slit holes 2 are formed on an electrode plate 1 via a metal slit machining jig 3 with a sharp and hard tip. Caulking claws 5 are formed on a nickel plate 1 and inserted into the slit holes 2 of the electrode plate 1. Tips of the caulking claws 5 protruded on the back face of the electrode plate 1 are folded in opposite directions, caulking sections of the lead plate are thrust in via a sharp pick to form pick press holes, and the caulking sections are pressed and finished by a press jig 8 to improve the smoothness and contact resistance. The electrode plate for an alkaline storage battery with excellent current collecting efficiency, productivity and yield of the electrode plate is obtained.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an alkaline storage battery monthly plate.

Conventional technology and its problems In recent years, in order to increase the capacity of alkaline storage batteries, porous mats made exclusively for metal fibers, foamed metals, and castable metals have been used as electrode plate cores, and the amount of active material filled has been increased. There is.

However, since these mats are entirely porous, they do not have flat plate parts for forming or connecting current collecting leads.

Furthermore, since the entire surface of the mat is filled with a paste-like active material, it is difficult to weld the lead plate due to the complex surface shape and the active material filled on the surface.

Note that it is extremely difficult to remove the filled active material in order to weld the lead plate.

Furthermore, there is a method in which a current collecting tab portion is formed in advance on the porous mat to prevent the active material from being filled in this portion, but this method results in poor productivity and poor yield of electrode plates.

Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems.
It is an object of the present invention to provide an electrode plate for a 7-potassium storage battery that is excellent in current collection efficiency, productivity, and electrode plate yield.

Structure of the Invention In order to achieve the above object, the present invention provides an electrode plate for a potash storage battery, characterized in that a porous mat is filled with a paste-like active material, and a lead plate for current collection is attached by force V. It is.

EXAMPLE Hereinafter, the details of the present invention will be explained using one example.

Figure 1 is a perspective view of a metal fiber mat filled with a paste-like active material and a slit hole for attaching a current collector lead plate. FIG. 3 is a schematic diagram of installing a current collecting lead plate, FIG. 4 is a schematic diagram of pick-pressing the lead plate, and FIG. 5 is a schematic diagram of pressing the lead plate mounting portion.

1 is gold! ! 4 An electrode plate filled with a pasty active material in a fiber mat, 2 a slit hole, 3 a slit processing jig, 4 a lead plate for current collection S5 a punching tab for force V, 6 a big press hole, 7 a The big jig and 8 are the press jig.

A metal fiber mat made of sintered nickel/I/fibers is used as a core and filled with a paste-like active material. After drying, cut into a shape appropriate for the battery size. Create slit holes in the electrode plate using a hard metal slit jig with a sharp tip. At this time, the cut metal fiber pieces and active material are completely removed. This is to prevent these from getting into the tabs and increasing the contact resistance when the tabs of the lead plate are caulked.

A swage is formed on a nickel rho plate with a thickness of 0.1 strip, and inserted into the slit hole of the electrode plate. Bend the ends of the staking claws protruding from the back of the electrode plate in opposite directions. The appropriate length of the claw is at least twice the thickness of the electrode plate. Next, push in the caulked part of the lead plate with a sharp pick as shown in Figure 4, and press it with a press jig to smooth out the V-shaped part that forms the pick press hole and improve contact resistance. The pick is formed to lower the contact resistance between the electrode plate and the lead plate and improve initial current collection.

The present invention provides an electrode plate for a 7μ potassium storage battery with excellent current collection efficiency and high productivity. Since lead attachment parts are not provided in advance on the porous mat, the yield of electrode plates is also excellent.

Effects of the Invention As described above, the present invention can provide electrode plates for alkaline storage batteries that are excellent in current collection efficiency, productivity, and electrode plate yield.
Its industrial value is extremely large.

[Brief explanation of the drawing]

Figure 1 is a perspective view of an electrode plate with slit holes, Figure 2 is a perspective view of a current collection lead plate with rivets, Figure 5 is a schematic diagram of installing the lead plate, and Figure 4 is a perspective view of the lead plate. A schematic diagram of pick pressing, and FIG. 5 is a schematic diagram of pressing the attachment part.

Claims (1)

[Claims] An electrode plate for an alkaline storage battery, characterized in that a porous mat is filled with a paste-like active material and a lead plate for current collection is attached by caulking.