High performance battery plate grid alloy

Abstract

The invented alloy is applied to complete enclosed maintenance free lead acid cell. The ingredient is Cd:1.5%-2.0%, Sb:1.5%-2.0%, RE:0.01-0.05%, Sn:0.01-0.05%; ingredient of RE is Ce, La, Pr, Nd etc. Adding Pb, Cd, mixed rare earths, stannum etc. constitutes alloy of Pb-Cd-Sb-Re-Sn. Features of the alloy are strong corrosion resistance, high deep cycle duty. Method for manufacturing the alloy includes producing Pb-RE intermediate alloy about 660 deg.C by using general crucible furnace or iron-lead pan; adding prepared antimony and stannum to molten lead at 450-500 deg.C; adding the molten fluid into cadmium and Ph-RE. Qualified alloy is casting into ingot for making sheet grating further.

Description

Technical field [0001] The invention relates to a grid alloy material for fully enclosed maintenance-free lead-acid batteries and a preparation method thereof. The alloy is mainly used in the manufacture of lead-acid batteries, and is especially suitable for making plates of deep-cycle traction-type maintenance-free lead-acid batteries. grid alloy material. Background technique [0002] The reform of industrial structure, environmental protection, effective utilization of resources and the development of resource recycling have put forward many new requirements for lead-acid batteries. In this regard, countries all over the world are researching and developing high-performance batteries to solve problems such as reliability, maintenance-free, deep cycle, and corrosion resistance of lead-acid batteries. As the main part of the battery, the grid alloy plays an important role in the development of the battery. [0003] In recent years, the use of electric scooters and the adv...

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Problems solved by technology

[0004] In the use of lead-cadmium-antimony alloy, when the cadmium content in the grid alloy is in the range of 1.0-2.0%, although the strength of the grid is increased, the brittleness and hardness of the alloy are also increased, and when the cadmium content in the alloy is greater than At 1.5%, agglomerated frame-shaped segregation, uneven cadmium composition, and local corrosion resistance of the alloy began to appear, which affected the use effect of the alloy to a certain extent.

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