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Novel lead calcium tin aluminum alloy, positive plate grid containing the same and lead-acid storage battery

A lead-acid battery, positive plate technology, applied in lead-acid batteries, battery electrodes, electrode carriers/current collectors, etc., can solve problems such as corrosion and deformation of grid alloys, damage to lead-acid batteries, and poor cycle life of positive grids , to achieve the effect of improving corrosion resistance and prolonging cycle life.

Active Publication Date: 2018-10-19
ANHUI LEOCH BATTERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cycle life of the positive plate grid made of this alloy is poor, and it will be oxidized to lead sulfate and lead dioxide to passivate during the charging process, resulting in corrosion and deformation of the grid alloy, which will cause certain damage to the lead-acid battery

Method used

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  • Novel lead calcium tin aluminum alloy, positive plate grid containing the same and lead-acid storage battery
  • Novel lead calcium tin aluminum alloy, positive plate grid containing the same and lead-acid storage battery
  • Novel lead calcium tin aluminum alloy, positive plate grid containing the same and lead-acid storage battery

Examples

Experimental program
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Effect test

Embodiment 1

[0033] In this embodiment, a lead / 0.09% calcium / 1.4% tin / 0.02% aluminum / 0.04% molybdenum alloy (percentage by weight) is prepared, and a positive plate grid containing the alloy is prepared.

[0034] Lead, calcium, tin, aluminum and molybdenum metals with a purity of 99.99% are selected as raw materials. Weigh 0.09 grams of pure calcium, 1.4 grams of pure tin, 0.02 grams of pure aluminum, 0.04 grams of pure molybdenum, and weigh 98.45 grams of pure lead. Mix the weighed pure metal raw materials into a volume of 0.45m 3 In the lead melting pot, and inert gas is introduced to generate an inert atmosphere in the lead melting pot. By means of electric heating, the lead melting pot is heated to 2720°C, and each pure metal raw material is melted for 10 minutes. Then, the temperature was lowered to 240° C. by feeding circulating water and maintained for 50 minutes, and the resulting molten metal was allowed to cool naturally, and 100 grams of calcium-tin-aluminum-molybdenum alloy w...

Embodiment 2

[0037] In this example, lead / 0.085% calcium / 1.2% tin / 0.015% aluminum / 0.05% molybdenum alloy (weight percentage) was prepared, and a positive plate grid containing the alloy was prepared.

[0038] Lead, calcium, tin, aluminum and molybdenum metals with a purity of 99.99% are selected as raw materials. Weigh 0.085 grams of pure calcium, 1.2 grams of pure tin, 0.015 grams of pure aluminum, 0.05 grams of pure molybdenum, and weigh 98.65 grams of pure lead. Mix the weighed pure metal raw materials into a volume of 0.45m 3 In the lead melting pot, and inert gas is introduced to generate an inert atmosphere in the lead melting pot. By means of electric heating, the lead melting pot is heated to 2670°C, and each pure metal raw material is melted for 12 minutes. Then, the temperature was lowered to 300° C. by feeding circulating water and maintained for 45 minutes, and the resulting molten metal was allowed to cool naturally, and 100 grams of calcium-tin-aluminum-molybdenum alloy was...

Embodiment 3

[0041] In this embodiment, lead / 0.08% calcium / 1% tin / 0.01% aluminum / 0.06% molybdenum alloy (percentage by weight) was prepared, and a positive plate grid containing the alloy was prepared.

[0042] Lead, calcium, tin, aluminum and molybdenum metals with a purity of 99.99% are selected as raw materials. Weigh 0.08 grams of pure calcium, 1 gram of pure tin, 0.01 grams of pure aluminum, 0.06 grams of pure molybdenum, and weigh 98.85 grams of pure lead. Mix the weighed pure metal raw materials into a volume of 0.45m 3In the lead melting pot, and inert gas is introduced to generate an inert atmosphere in the lead melting pot. By means of electric heating, the lead melting pot is heated to 2620°C, and each pure metal raw material is melted for 15 minutes. Then, the temperature was lowered to 330° C. by feeding circulating water and maintained for 40 minutes, and the resulting molten metal was allowed to cool naturally, and 100 grams of calcium-tin-aluminum-molybdenum alloy was obt...

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Abstract

The invention relates to a lead calcium tin aluminum molybdenum alloy. The alloy contains the following components by weight percentage: 0.04%-0.06% of molybdenum, 0.08%-0.09% of calcium, 1%-1.4% of tin, 0.01%-0.02% of aluminum, and the balance lead. The invention also relates to a lead-acid storage battery positive plate grid containing the alloy, a preparation method of the alloy, a preparationmethod of the positive plate grid and a lead-acid storage battery containing the positive plate grid. According to the invention, molybdenum element is added into ordinary lead calcium tin aluminum alloy, so that the alloy has high strength, high thermal stability and good processing performance, especially the corrosion resistance of the positive plate grid made from the alloy under a low pH environment can be improved, and also the cycle service life of the lead-acid storage battery adopting the positive plate grid can be greatly improved.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a novel lead-calcium-tin-aluminum alloy, a positive plate grid comprising the alloy, and a lead-acid battery comprising the positive plate grid. Background technique [0002] Lead-acid batteries are mainly composed of plates, separators, electrolyte and casing. The pole plate is one of the core components of the battery. It is made of lead paste coated on the grid and solidified by compaction and acid, and is made into a positive plate and a negative plate respectively. The charge and discharge of the battery is achieved by the chemical reaction between the active material on the plate and the sulfuric acid in the electrolyte. Therefore, the grid is the main component of the lead-acid battery, commonly known as the lattice body. The grid is formed by casting or netting of lead-based alloy. It has three functions in the lead-acid battery: one is as the carrier of the active ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/68H01M4/73H01M4/84H01M10/06B22D25/04C22C1/02C22C11/06
CPCB22D25/04C22C1/02C22C11/06H01M4/685H01M4/73H01M4/84H01M10/06Y02E60/10
Inventor 丁一陈清元李振华张凯强
Owner ANHUI LEOCH BATTERY TECH