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Fabrication method of maintenance-free batter grid alloy

A battery board, maintenance-free technology, applied in the field of grid alloys, can solve the problems of high loss, difficult to control content, poor creep resistance, etc., to achieve not easy oxidation and loss, strong charge and discharge acceptance, and reduce polarization and the effect of corrosion

Inactive Publication Date: 2019-05-14
张志炜
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Problems solved by technology

[0002] For lead-acid batteries, pure lead is an ideal corrosion-resistant material in sulfuric acid, but pure lead often cannot meet the requirements of various applications, and the method of alloying is the main method to improve and improve the performance of materials
The traditional grid alloys are mainly lead-calcium and lead-antimony, which are helpful to the casting and conductivity of the grid, but they generate new problems. First, the main disadvantages of lead-antimony grid alloys are: (1 ) reduces the hydrogen evolution potential in the battery, which makes the battery lose water seriously, and can only be used for open-type batteries, not maintenance-free batteries. (2) large self-discharge, (3) will produce toxic gas SbH 3 ; Second, the problems of lead-calcium grid alloys are: (1) Calcium is oxidized during the casting process, the loss is large, and the content is not easy to control; (2) The crystal particles are large and the corrosion resistance is poor; Lead to low deep cycle performance; (4) Poor creep resistance; (5) Calcium is difficult to add to the alloy

Method used

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Embodiment

[0010] The lead-titanium alloy prepared in advance is heated and melted in a lead furnace. The mass percentage of titanium in the lead-titanium alloy is 0.5±0.1%, and the rest is lead; then it is cast and processed into a grid, and the grid is coated with lead paste. Pole plate, the positive and negative plates and separators are packaged according to the ratio, and then cast and welded to form an electrode group, the electrode assembly is put into the battery case, and then through the process of sealing, adding acid and charging, a long-life lead-acid battery is formed. .

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Abstract

The invention discloses a fabrication method of maintenance-free batter grid alloy. Lead titanium alloy comprises metal lead and metal titanium, the titanium mass percent of the lead titanium alloy accounts for 0.5+ / -0.1%, and the balance is lead. By using the grid of the lead titanium alloy, the problems of serious water loss, large self-discharging, large particle, no corrosion resistance and poor charging acceptance capability are prevented, the service lifetime of the battery is prolonged to a great extent, and the quality of the battery is prolonged.

Description

technical field [0001] The invention relates to a grid alloy of a maintenance-free lead-acid storage battery, in particular to a preparation method of a maintenance-free battery grid alloy. Background technique [0002] For lead-acid batteries, pure lead is an ideal corrosion-resistant material in sulfuric acid, but pure lead often cannot meet the requirements of various applications, and the method of alloying is the main method to improve and improve the performance of materials. The traditional grid alloys are mainly lead-calcium and lead-antimony, which are helpful to the casting and conductivity of the grid, but they generate new problems. First, the main disadvantages of lead-antimony grid alloys are: (1 ) reduces the hydrogen evolution potential in the battery, which makes the battery lose water seriously, and can only be used for open-type batteries, not maintenance-free batteries. (2) large self-discharge, (3) will produce toxic gas SbH 3 ; Second, the problems of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M4/73
CPCY02E60/10
Inventor 张志炜
Owner 张志炜
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