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Lead acid battery negative grid alloy and preparation method thereof

A technology of lead-acid batteries and lead alloys, which is applied to battery electrodes, circuits, electrical components, etc., and can solve problems such as long aging periods and ineffective effects

Inactive Publication Date: 2015-02-25
CHAOWEI POWER CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to solve the problem of long aging of the grid and take into account the stability of the alloy lattice, many technicians have carried out a lot of exploration and research, mainly including changing the alloy composition and high temperature aging, but the effect is not obvious. Among them, High-temperature aging hardening has some results, but usually it is high-temperature aging for 8 to 24 hours, and then natural shelf aging for 3 days, and the aging period is still relatively long

Method used

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  • Lead acid battery negative grid alloy and preparation method thereof
  • Lead acid battery negative grid alloy and preparation method thereof

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Experimental program
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Embodiment 1-5

[0019] Preparation of negative grid alloy:

[0020] A, prepare graphite-lead alloy, make the massfraction of graphite in graphite-lead alloy be 2%~3%;

[0021] b. Add the remaining lead into the lead-melting furnace according to the distribution ratio of the negative grid alloy, heat it to 550-600°C, then add the graphite-lead alloy obtained in step a into the lead-melting furnace and stir evenly, and then put the aluminum The tin alloy is added into the lead-melting furnace, fully melted and stirred evenly to obtain the negative grid alloy.

[0022] After the alloy is prepared, samples are taken to test the composition of the alloy with a direct-reading spectrometer. The main composition should be 0.1% to 0.4% of tin, 0.02% to 0.04% of aluminum, 0.2% to 0.4% of graphite, and the balance is lead. After testing, the composition of the lead-acid battery negative grid alloy prepared in each embodiment is shown in Table 1, and the balance is lead (including unavoidable impurities...

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Abstract

The invention relates to a grid alloy and especially relates to a lead acid battery negative grid alloy and a preparation method thereof. A negative grid prepared from the lead acid battery negative grid alloy has strong mechanical strength suitable for plate coating and has short time efficiency. The lead acid battery negative grid alloy mainly comprises, by mass, 0.1-0.4% of tin, 0.02-0.04% of aluminum, 0.2-0.4% of graphite and the balance lead. The lead acid battery negative grid alloy is a lead-tin-aluminum-graphite alloy. The lead acid battery negative grid prepared from the lead acid battery negative grid alloy has short time efficiency within 2 days.

Description

technical field [0001] The invention relates to a grid alloy, in particular to a lead-acid battery negative grid alloy and a preparation method thereof. Background technique [0002] At present, due to the national policy prohibiting the production of lead-antimony-cadmium batteries, the mainstream of battery production is now lead-calcium series grids, and lead-calcium series grid alloys. After casting, the alloy lattice structure is unstable and the grids are soft. During the smearing process It will be deformed in the center, resulting in a high scrapping rate of smears. When the smears are divided into smears after curing, due to the deformation of the grid, the frame of the plate is easy to be cut and scrapped. Therefore, the grid must have a longer limitation period, usually 4 to 7 days, and the production cycle is long, so a long limitation period means a backlog of funds and higher production costs. In order to solve the problem of long aging of the grid and take in...

Claims

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Application Information

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IPC IPC(8): H01M4/68C22C11/06
CPCC22C11/06H01M4/685Y02E60/10
Inventor 杜恩生刘延朝李明会郑静超
Owner CHAOWEI POWER CO LTD
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