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Battery plate grid material having excellent performance

A technology of lead-acid batteries and grids, which is applied in the direction of electrode carriers/collectors, etc., can solve the problems of easy deformation and expansion of the grid surface, long hardening time of the grid, early capacity loss, etc., and achieve stability and reliability problems, shortened alloy hardening time, effects of high hardness and mechanical properties

Inactive Publication Date: 2005-05-25
上海飞轮有色冶炼厂
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] At present, the grid materials widely used in lead-acid batteries are lead-antimony alloy and lead-calcium alloy. The main defects are: (1) The mechanical properties of the alloy are poor and the mechanical strength is low
(2) The surface of the grid is prone to deformation and expansion, causing the active material to fall off and affecting the life of the product; (3) The surface of the grid is prone to form a dense lead sulfate passivation film, which destroys the good adhesion between the grid and the active material It increases the resistance of the bonding surface, prevents the electrode process from continuing to occur, and greatly reduces the current utilization rate of battery charge and discharge, resulting in early capacity loss of the battery; (4) The hardening time of the grid during the manufacturing process Too long, low production efficiency
With the application of batteries in power, the disadvantages of this battery are quickly exposed: poor charge acceptance, short cycle life, and early capacity loss

Method used

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Embodiment Construction

[0012] The present invention is further described below with embodiment again.

[0013] The components of the embodiments of the present invention are as follows (percentage by weight):

[0014] Lead Pb

[0015] The smelting process of this alloy is to use ordinary crucible or melting pot to make Pb-Ca-Ba master alloy at 650-750°C, melt lead in the alloy pot, raise the temperature to about 580°C, add other prepared alloys, and stir , add the master alloy, stir, take a sample for testing, adjust the composition, stir, take the sample to the ingot casting machine to form an ingot if it is qualified.

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PUM

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Abstract

This invention discloses a sheet grate material for all closed maintenance free lead acid accumulator and method for preparing the same, which contains (by weight percentage) 0.03-0.15 calcium, 0.01-0.04 aluminium, 0.50-3.0 tin, 0.001-0.2 barium the others lead, 0.03-0.15 bismuth and 0.02-0.15 silver also can be contained, through preparing Pb-Ca-Ba intermediate alloy at 650-750 deg.C by normal crucible or melting container, melting lead in alloy container to 580 deg.C, adding prepared other alloy, agitating, adding intermediate alloy, agitating, sampling and testing, then adjusting composition, agitating and sampling to standard, casting into ingot to obtain said material.

Description

Technical field [0001] The invention relates to a grid material for fully-sealed maintenance-free lead-acid batteries and a preparation method thereof, and is particularly suitable for manufacturing thin, high-current charge-discharge, deep-cycle maintenance-free fully-sealed power storage batteries. Background technique [0002] At present, the grid materials widely used in lead-acid batteries are lead-antimony alloy and lead-calcium alloy. The main defects are: (1) The mechanical properties of the alloy are poor and the mechanical strength is low. (2) The surface of the grid is prone to deformation and expansion, causing the active material to fall off and affecting the life of the product; (3) The surface of the grid is prone to form a dense lead sulfate passivation film, which destroys the good adhesion between the grid and the active material It increases the resistance of the joint surface, prevents the electrode process from continuing to occur, and greatly reduces th...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C11/00H01M4/68
CPCY02E60/10
Inventor 吴建华韩鹰张忠民顾秀峰周正华
Owner 上海飞轮有色冶炼厂
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