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High-energy power lead-acid storage battery grid alloy and preparation method thereof

A technology for lead-acid batteries and manufacturing methods, which is applied in the direction of lead-acid batteries, battery electrodes, circuits, etc., which can solve the problems of low corrosion resistance of grids and low battery deep discharge cycle life, and achieve good electrical conductivity and corrosion resistance , The effect of a revolutionary breakthrough

Pending Publication Date: 2018-03-06
河北超威电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-energy power lead-acid battery grid alloy and its preparation method, which can effectively solve the problems of low corrosion resistance of the existing grid and low battery deep discharge cycle life

Method used

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Effect test

Embodiment 1

[0023] A high-energy power lead-acid storage battery grid alloy comprises the following substances by weight percentage: 0.5% tin, 0.01% cerium, 0.05% magnesium, 0.01% sodium, 0.001% silver, and the rest is lead. The grid made by this scheme is suitable for use in an environment with a low battery discharge depth, and is most suitable for consumers who usually ride to and from get off work.

Embodiment 2

[0025] A high-energy power lead-acid battery grid alloy, including the following substances by weight percentage: 1.2% tin, 0.03% cerium, 0.1% magnesium, 0.03% sodium, 0.004% silver, and the rest are lead; It is used by consumers with long battery riding mileage and deep discharge depth. Especially for those users of high-power electric vehicles who have to exhaust the internal power of the battery every day, the battery composed of this alloy is an ideal choice.

Embodiment 3

[0027] A high-energy power lead-acid battery grid alloy, including the following substances by weight percentage: 2.0% tin, 0.04% cerium, 0.15% magnesium, 0.05% sodium, 0.003% silver, and the rest are lead; For electric vehicle users who use in high temperature environment, due to the high ambient temperature, the corrosion of the grid is intensified. By increasing the content of Mg, Sn and Se, the strength and corrosion resistance of the grid can be improved, and by increasing the content of Sn, the electrical conductivity and cycle performance. Thereby prolonging the service life of the plate.

[0028] In the above embodiments, the lead is electrolytic lead, wherein the lead purity is ≥99.994%.

[0029] A method for manufacturing a high-energy power lead-acid battery grid alloy, comprising the following steps:

[0030] Step 1: Heat lead to 550-650 degrees Celsius to melt, then add tin, sodium, magnesium, and silver in turn and stir, and stir for at least 15 minutes after e...

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Abstract

The invention discloses a high-energy power lead-acid storage battery grid alloy. The high-energy power lead-acid storage battery grid alloy comprises the following materials by weight percent: 0.5-2.0% of tin, 0.01%-0.04% of cerium, 0.05%-0.15% of magnesium, 0.01%-0.05% of sodium, 0.001%-0.004% of silver and the balance of lead. The manufacturing method of the high-energy power lead-acid storagebattery grid alloy comprises the following steps: heating the lead to 550-650 DEG C, melting, sequentially adding tin, sodium, magnesium and silver, stirring, stirring for at least 15 minutes each time one metal element is added, then adding the next metal element, adding cerium, stirring for 35-50 minutes, and then starting pouring a grid. The high-energy power lead-acid storage battery grid alloy has the advantages that: the magnesium is added into the grid alloy to replace the traditional metal calcium, so that the grid achieves excellent electric conductivity and corrosion resistance, thecycle life of a battery reaches 800 times or more, the battery is an ideal option for a power battery, and the revolutionary breakthrough of the grid alloy is realized. Meanwhile, the various metal materials are sequentially added and evenly stirred for a long time according to the characteristics of various metal elements, so that the various metal materials have sufficient time to react.

Description

technical field [0001] The invention relates to a high-energy power lead-acid storage battery grid alloy and a preparation method thereof. Background technique [0002] Grid alloy composition has a very important impact on battery performance. In the development of the storage battery industry, it has experienced the development process from pure lead to lead-antimony alloy, from lead-antimony alloy to lead-calcium alloy. Pure lead is inoperable for gravity casting due to the softness of the grid alloy. Affected the advancement of industrialization. Adding antimony to the grid alloy can increase the hardness of the grid and has very good cycle performance. However, due to the low hydrogen evolution overpotential of antimony, the battery loses a lot of water, which affects the service life of the battery. Lead-calcium alloy has low gas evolution and low water loss, but calcium sulfate is a poor conductor of electricity, and the battery has the disadvantage of low cycle lif...

Claims

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Application Information

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IPC IPC(8): C22C11/06H01M4/68H01M10/06
CPCH01M4/685H01M10/06C22C11/06Y02E60/10
Inventor 张建华杨绍坡
Owner 河北超威电源有限公司
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