Plate grid alloy for positive plate of lead-acid storage battery

A lead-acid battery, positive plate technology, applied in battery electrodes, electrode carriers/current collectors, circuits, etc., can solve the problems of high energy consumption, cannot achieve environmental protection and energy saving, and achieve low energy consumption, prolong service life, and delay linearity. deformation effect

Active Publication Date: 2016-11-09
JIESHOU HUAYU POWER SUPPLY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned patents are all lead-calcium alloys, and the energy consumption in the processing process is relatively high, which cannot achieve the purpose of environmental protection and energy saving

Method used

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  • Plate grid alloy for positive plate of lead-acid storage battery
  • Plate grid alloy for positive plate of lead-acid storage battery

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Embodiment 1

[0018] A grid alloy for the positive plate of a lead-acid storage battery, consisting of the following components by weight percentage:

[0019] Tin 0.943%, lanthanum 0.02%, yttrium 0.01%, cerium 0.01%, silver 0.003%, aluminum 0.002%, tungsten 0.002%, manganese 0.0015%, cobalt 0.0015%, magnesium 0.001%, phosphorus 0.001%, the rest is lead;

[0020] Its preparation method is as follows:

[0021] (1) First heat tin to 750°C, then slowly add lanthanum, yttrium and cerium, stir while adding, continue to stir for 10 minutes after all the metals are melted, then cool down to 500°C, drain the liquid, and cast tin-lanthanum-yttrium-cerium alloy ingot;

[0022] (2) Heat the tin-lanthanum-yttrium-cerium alloy ingot to 400°C, then add silver, aluminum, tungsten, manganese, cobalt, magnesium and phosphorus, continue heating to 550°C, keep stirring for 20 minutes, and obtain the tin master alloy;

[0023] (3) Heat the electrolytic lead to 600°C, then add the tin master alloy and stir eve...

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Abstract

The invention discloses a plate grid alloy for a positive plate of a lead-acid storage battery, and relates to the technical field of processing of lead-acid storage batteries. The plate grid alloy is prepared from the following components in percentage by weight: 0.943% of tin, 0.02% of lanthanum, 0.01% of yttrium, 0.01% of cerium, 0.003% of silver, 0.002% of aluminum, 0.002% of tungsten, 0.0015% of manganese, 0.0015% of cobalt, 0.001% of magnesium, 0.001% of phosphorus and the balance of lead. The prepared plate grid alloy is a rare-earth alloy; and the mechanical strength of a plate grid can be improved through addition of the tin, rare earth and the silver, so that linear deformation of the plate grid is delayed. Meanwhile, the oxygen-evolution potential of a positive electrode can be regulated and controlled through addition of the tungsten, the manganese and the cobalt; and corrosion of the plate grid is reduced, so that the service lifetime of the plate grid is prolonged. The casting property can be improved through addition of the aluminum, the magnesium and the phosphorus; the molten alloy liquid has good mobility; a mold cavity can be easily filled with the alloy liquid; and the plate grid alloy is easy to mold during casting.

Description

Technical field: [0001] The invention relates to the technical field of lead-acid battery processing, in particular to a grid alloy for a positive plate of a lead-acid battery. Background technique: [0002] With the rapid development of lead-acid battery technology and the continuous emergence of new materials and new processes, higher requirements are placed on the performance of lead-acid batteries such as water loss and overcharge resistance. Many domestic battery manufacturers also add additives such as selenium, sulfur, and arsenic to antimony-containing grid alloys to improve the corrosion resistance and hardness of the grid, improve overcharge resistance, and reduce water loss of the battery. However, due to the different dissolution temperatures of various additives in lead, their solubility is also different, and the different surface tensions of various additives will cause defects such as grid thermal cracking and shrinkage cavities. Therefore, it is necessary t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/68H01M4/82C22C1/03C22C9/02
CPCC22C1/03C22C9/02H01M4/685H01M4/82Y02E60/10
Inventor 黄建平黄建新
Owner JIESHOU HUAYU POWER SUPPLY
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