Low-temperature deep-cycle positive grid alloy and preparation method thereof

A deep cycle and positive plate technology is applied in the field of low temperature deep cycle lead-acid battery positive grid alloy and its preparation, which can solve the problems of limiting the deep cycle performance of the battery and the large resistance of the anode corrosion film, so as to improve the deep cycle performance, The effect of good electrical conductivity and uniform alloy composition

Active Publication Date: 2014-10-01
TIANNENG GRP JIANGSU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is generally believed that the negative plate is mainly responsible for affecting the low-temperature performance. However, in actual tests, it was found that the positive plate also limits the low-temperature performance of the battery. The resistance of the membrane is relatively high, which limits the deep cycle performance of the battery at low temperatures

Method used

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  • Low-temperature deep-cycle positive grid alloy and preparation method thereof

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Embodiment 1

[0028] A method for preparing a low-temperature deep-cycle positive electrode grid alloy, characterized in that it comprises the following steps:

[0029] (1) Raw material preparation: lead, calcium, tin and aluminum, and the mass percentage of each raw material in the total raw material is: calcium: 0.09%, tin: 1.8%, aluminum: 0.05%, zinc: 0.01%, and lead is the balance;

[0030] (2) Add lead grains accounting for 85% of the total mass of lead raw materials into the graphite lead melting pot of the intermediate frequency furnace and heat to 670~680°C to fully melt the lead grains, and wrap and mix them with lead skin accounting for 0.5% of the total mass of lead raw materials Uniform calcium chips and broken aluminum flakes, and press them into the molten lead liquid together, and then stir for 2~3 minutes to mix the calcium and aluminum elements in the lead liquid evenly. During this process, keep the temperature of the melt at 670~ Between 680°C;

[0031] (3) Stop stirring...

Embodiment 2

[0035] A method for preparing a low-temperature deep-cycle positive electrode grid alloy, characterized in that it comprises the following steps:

[0036] (1) Raw material preparation: lead, calcium, tin and aluminum, and the mass percentage of each raw material in the total raw material is: calcium: 0.09%, tin: 1.8%, aluminum: 0.05%, zinc: 0.08%, lead as the balance;

[0037] (2) Add lead grains accounting for 85% of the total mass of lead raw materials into the graphite lead melting pot of the intermediate frequency furnace and heat to 670~680°C to fully melt the lead grains, and wrap and mix them with lead skin accounting for 0.5% of the total mass of lead raw materials Uniform calcium chips and broken aluminum flakes, and press them into the molten lead liquid together, and then stir for 2~3 minutes to mix the calcium and aluminum elements in the lead liquid evenly. During this process, keep the temperature of the melt at 670~ Between 680°C;

[0038] (3) Stop stirring and...

Embodiment 3

[0042] A method for preparing a low-temperature deep-cycle positive electrode grid alloy, characterized in that it comprises the following steps:

[0043] (1) Raw material preparation: lead, calcium, tin and aluminum, and the mass percentage of each raw material in the total raw material is: calcium: 0.09%, tin: 0.5%, aluminum: 0.05%, zinc: 0.2%, and lead as the balance;

[0044] (2) Add lead grains accounting for 85% of the total mass of lead raw materials into the graphite lead melting pot of the intermediate frequency furnace and heat to 670~680°C to fully melt the lead grains, and wrap and mix them with lead skin accounting for 0.5% of the total mass of lead raw materials Uniform calcium chips and broken aluminum flakes, and press them into the molten lead liquid together, and then stir for 2~3 minutes to mix the calcium and aluminum elements in the lead liquid evenly. During this process, keep the temperature of the melt at 670~ Between 680°C;

[0045] (3) Stop stirring ...

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Abstract

The invention discloses a low-temperature deep-cycle positive grid alloy which consists of the following materials in percentage by weight: 0.05-0.12% of calcium, 0.2-2.0% of tin, 0.01%-0.1% of aluminum, 0.01-0.2 of zinc and the balance of lead. The alloy disclosed by the invention has good low temperature performance, and reduces impedance for forming an anode corrosion membrane at a low temperature. The zinc element can improve deep-cycle performances of the battery very obviously even under a low temperature condition due to good conductivity of PbZnO oxides.

Description

[0001] technical field [0002] The invention belongs to the field of lead-acid batteries, and relates to a low-temperature deep-cycle lead-acid battery positive electrode grid alloy and a preparation method thereof. Background technique [0003] In the field of lead-acid batteries, the low temperature performance of batteries has been unsatisfactory. It is generally believed that the main factor affecting the low temperature performance is the negative plate. However, in actual tests, it was found that the positive plate also limits the low temperature performance of the battery. At the same time, it was further found that the anode corrosion formed by the lead-calcium-tin-aluminum alloy of the conventional positive grid at low temperature The resistance of the membrane is relatively high, thereby limiting the deep cycle performance of the battery at low temperatures. Contents of the invention [0004] The purpose of the present invention is to provide a variety of low-t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C11/06C22C1/02
CPCC22C1/02C22C11/06
Inventor 王晶陈飞马换玉周燕方明学杨惠强
Owner TIANNENG GRP JIANGSU TECH
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