Production method of lead-coated copper plate grid of lead acid storage battery and special combined mould

Abstract

The invention discloses a production method of a lead-coated copper plate grid of a lead acid storage battery. The specific production method comprises the following steps of: closing and fixing a mould A and a mould C; heating to 120-140 DEG C; casting for the first time to form a lead layer with a groove; after cooling molten lead and the moulds, removing the mould C from the mould A; holding a copper wire serving as a copper plate grid in the groove of the copper layer; heating a mould B with the groove to 120-140 DEG C; closing and fixing the mould A and the mould B; and casting for the first time to construct the lead-coated copper plate grid of which the surface is completely covered by lead. The special combined mould of the production method is provided with the mould A and the mould B which are mutually corresponding to each other, and has the special points of being provided with the mould C which is matched with the mould A for use, wherein the inner surface of the mould C is provided with a convex edge which is matched with the groove on the mould A; the size of the cross section of the convex edge is less than that of the cross section of the groove on the mould A; and the diameter of the cross section of the convex edge is the same as that of the copper wire of the copper plate grid.

Description

technical field [0001] The invention belongs to the field of storage battery production, and in particular relates to a production method for a lead-acid storage battery lead-clad copper grid and a special combined mold. Background technique [0002] At present, lead-acid batteries still occupy a certain advantage in the market share of batteries, and play an irreplaceable important role in various sectors of the national economy. The theoretical specific energy of lead-acid batteries is 170W h / kg, but in fact most lead-acid batteries can only release 30-50 W h / kg of energy, which is caused by the low utilization rate of active materials and the other On the one hand, it is caused by the quality of inert components, such as battery casings, grids, separators, terminals, etc. Especially as the pole grid supporting the active material, it has a great influence on the main performance of the battery. In order to improve the specific energy of lead-acid batteries, people have ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems of high production cost and difficulty in large-scale industrial production in the existing lead-acid storage battery copper grid production method and mold, and provide a lead-acid storage battery with low production cost and suitable for large-scale industrial production. Production method of lead-clad copper grid for acid storage battery and special combination mold

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