JPS58186168A - Manufacturing method of grid base plate for storage battery - Google Patents

Abstract

PURPOSE:To secure a grid base plate for a storage battery excellent in lightness and quality stabilization, by using a composite plate making a synthetic resin film stick fast to both surfaces of a lead or lead alloy sheet carrying numerous small holes. CONSTITUTION:A perforated lead sheet 3 is produced by the way of boring a lot of small holes 2 of about 0.7mm.phi through regularly in a continuously cast and rolled plate 1 of 1.5mm. in thickness, composed of Ca 0.08wt%, Sn 0.8wt% and the remnant of Pb. A polyethylene film 4 of 0.2mm. in thickness is stretched over both surfaces of this perforated sheet 3 and, after being heated and compressed, a composite plate 5 is produced. This composite plate 5 obtained in this way is punched to make square holes, and a storage battery grid base plate 6 which has an empty space 8 to be charged with active material made up by a grid frame 7 is thus secured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for manufacturing a grid bonding plate for a clam storage battery.

In general, paste-type lead-acid battery boards are formed by casting using lead or a lead alloy (hereinafter referred to as lead alloy) (t#lff1), or by punching a thin plate of lead alloy into a desired shape. They are manufactured by the so-called ex/all-ind method, in which a thin sheet is formed by a punching method or an ex/mold method is used to form an ex-9nd sheet, and a substrate of a predetermined shape is made from this sheet. Since both are made of 4m alloy, 3111 increases significantly.

I used it to lighten the battery 11i and use it to lighten the battery.
Improvements have been made to improve the
As an example, a composite formed by combining Ik, fallen fat, and lead alloy has been proposed, and in JP-A-55-133770, a lead alloy thin plate, a synthetic greasy film, and f: a heating agent are proposed. Laminated (laminated) & 1 Ex. However, this one-piece board has a grid-like empty section with running strips and synthetic resin 4Ik.
H! The number of shields with J& is extremely small, and the expansion coefficients of lead metal and alloy kit are different, so this M unit, which was photo-discharged from the storage battery that serves as a health board for this Mut, is When the two types of plexiform speeds are mixed and the radioactive agent is eroded by the electrolyte, there is a risk that the base material and the material may peel off from the fine alloy surface69. Sada escaped from the capital and ran into something that caused a short circuit.

In order to improve the shortcomings of the present invention, #! As a result of extensive research, we have discovered a storage battery lattice substrate made of a composite plate that firmly adheres to a synthetic resin coating on a lead alloy substrate without using adhesives. That is, the present invention involves integrally applying a synthetic chyme membrane to both sides of a thin lead or Fi shell plate having numerous small holes through chain holes, and providing a lattice-like space in the composite plate. % mold.

In the present invention, in order to provide countless small holes in the lead alloy thin plate,
A synthetic resin film is applied to the inward direction of the lead alloy thin sheet as it is, and when heated and pressurized, the resin softens and penetrates into the holes, causing the slow-rolling lead alloy thin plate. Form a strong vIj layer on both sides. Therefore, even if electricity storage a is stored in the electrode plate made of this composite plate and photodischarge is repeated, the synthetic resin coating will not peel off from the lead alloy thin plate, so the active material will not be removed and the WI will be shortened accordingly. Long-term yI without causing
#It is something that can last a lifetime.

In the present invention, the synthetic resin coating is made of acid-resistant and extensible synthetic resin such as polyethylene, polynolopyrene, etc., and has a thickness of 0.1 to 0.51 mm.

In addition, in the present invention, in order to provide the lattice-shaped voids t-, they may be formed by a machining method such as an ex-machining method or a punching method.

The polar shape of the small hole formed in the parent lead alloy thin plate is 0.5~1.0■@
Just insert it through the sleeve.

Next, examples of the present invention will be continued.

*1 example 41 figure shows boss imp (Cm O,081 lid Yu, Sn
0.8IILJIL excellent, leg sPb better thickness 1.5■
3 tons of perforated thin lead plates were obtained by inserting numerous small holes 2 of about 0.7 .phi. On both sides of this perforated thin plate 30, as shown in Fig.
The composite plate 5 was obtained by heating and knife-edge pressure under the conditions of ℃ pressure j Kf/cll''.90 In this case, the polyethylene softened and penetrated into the small pores, communicating with them and integrating them.

The composite plate 5 thus obtained is subjected to a breaking process to form a lattice substrate 6 for a storage battery of the present invention having a lattice frame IK as shown in FIG.

Therefore, a storage battery was constructed using the substrate of the present invention and a conventional polar plate filled with an active material of Ofl & alloy crystal plate, and the life of the storage battery was shortened by repeating charging and discharging cycles. The results are shown in Table 111.

Summary 1 table Board weight Number of cycles Invention product 25″ 3λθ Conventional product JIoh2 g.

As described above, according to the present invention, it is possible to obtain a grid substrate for a storage battery that is light in weight and stable in quality.
A storage battery using the substrate of the present invention has remarkable effects such as being able to last for a long period of four years.

[Brief explanation of drawings]

Fig. 1 is a fi+ view showing an example of a perforated lead alloy thin plate according to the present invention, Fig. 2 is a # side view showing an example of a composite plate according to the present invention, and Fig. 3 is a lNk view of the substrate according to the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Lead alloy rolled plate, 2... Small hole, 3... Perforated thin plate, 4... Polyethylene thin plate, 5... Composite board, 6
...Substrate of the present invention, 7. Lattice ribs, 8. Air barrier for living material photobonds.

Claims (1)

[Claims] Synthetic resin coating t-bond plywood t-adhered to both sides of fI & or lead alloy thin plate with many small holes through sales holes t-formed in a lattice shape by machining t-% image A method for manufacturing a grid substrate for storage batteries.