Alloy material for accumulator positive slab lattice and preparation method thereof

A technology of alloy materials and batteries, applied in the direction of electrode carrier/collector, etc., can solve the problems of reducing the hydrogen evolution overpotential of the negative electrode, easy gas evolution and water loss, and difficulty in satisfying users

Inactive Publication Date: 2009-08-19
赵恒祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the use of the positive grid made of lead-based seven-element alloy, antimony is replaced by Sb 3+ Ions exist in the form of ions, which are easy to migrate between the separators and deposit on the surface of the negative electrode, thereby reducing the hydrogen evolution overpotential on the negative electrode, making the battery very easy to degas and lose water when it is charged or overcharged. In order to maintain the battery, it needs to be in use Add water frequently, otherwise it will cause the battery to dry up prematurely and end its life
[0003] The composition of the lead-calcium alloy is Pb-Ca-Sn-A1. This alloy achieves the purpose of reducing the w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, the preparation of the battery positive grid alloy material includes steps:

[0034] (1) Weigh a certain amount of lead, put the lead into the lead pot, melt it into lead liquid, and stir at the same time, so that the various ingredients added later can be mixed evenly with the lead liquid and quickly melted in the lead liquid.

[0035] (2) Control the temperature of the lead liquid at 650° C., weigh the cerium according to the amount of 0.17 wt % cerium in the alloy, stir at the same time, and slowly cool the lead liquid after 5 minutes.

[0036] (3) cooling the mixed lead liquid to 560°C, weighing the calcium-aluminum alloy according to the amount that the calcium content in the alloy is 0.09wt% and the aluminum content is 0.04wt%, add it in the lead liquid, and stir simultaneously, After 5 minutes, the mixed lead liquid was cooled slowly. In this step, calcium and aluminum can also be weighed and added separately.

[0037] (4) Cool the mixed lea...

Embodiment 2

[0040] The preparation method is the same as in Example 1, and the weight percentages of each component are selected as follows: calcium: 0.09%; tin: 0.11%; aluminum: 0.04%; cerium: 0.19%; lead: the balance.

Embodiment 3

[0042] The preparation method is the same as in Example 1, and the weight percentage of each component is selected as follows: calcium: 0.08%; tin: 0.11%; aluminum: 0.04%; cerium: 0.18%; lead: the balance.

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PUM

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Abstract

The invention discloses an alloy material for a positive slab lattice of a lead acid storage battery and a preparation method thereof. The alloy material is composed of 0.07 percent to 0.12 percent of calcium, 0.10 percent to 0.12 percent of tin, 0.04 percent to 0.05 percent of aluminum, 0.16 percent to 0.2 percent of cerium or lanthanum and the balance of lead. The preparation method comprises the following steps: a. the lead is melted to form a lead solution; b. the temperature of the lead solution is controlled between 600 DEG C and 650 DEG C and the cerium or the lanthanum is added into the solution; and c. the temperature of the lead solution is lowered to 550 DEG C to 580 DEG C and the calcium and the aluminum are added into the solution; and d. the temperature of the lead solution is lowered to 450 DEG C to 500 DEG C, the tin is added into the solution, and the lead solution is taken out from the pot and molded into the alloy material. The alloy material prepared by the method has good corrosion resistant performance and can ensure that the lead acid storage battery produced has good corrosion resistant performance, low water loss, low gassing rate and long service life.

Description

technical field [0001] The invention relates to a storage battery, in particular to an alloy material of a storage battery positive grid and a preparation method thereof. Background technique [0002] The power source of electric vehicles and hybrid electric vehicles generally uses sealed valve-regulated lead-acid batteries, and the positive grid materials of lead-acid batteries are mostly lead-based seven-element alloys or lead-calcium alloys. The composition of the lead-based seven-element alloy is Pb-Sb-As-Sn-Se-Cu-S, and the use of antimony-containing lead-based seven-element alloy material can solve the problem of weak corrosion resistance of the battery grid, so that the battery has better Deep charging and deep discharging capabilities. However, during the use of the positive grid made of lead-based seven-element alloy, antimony is replaced by Sb 3+ Ions exist in the form of ions, which are easy to migrate between the separators and deposit on the surface of the neg...

Claims

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Application Information

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IPC IPC(8): H01M4/66H01M4/68C22C11/02
CPCY02E60/12Y02E60/10
Inventor 赵恒祥刘毅
Owner 赵恒祥
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