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Rare earth alloy of anode plate grid for lead-acid storage battery

A technology of lead-acid batteries and rare earth alloys, which is applied in the direction of electrode carriers/collectors, etc., can solve the problems of not being very suitable and the loss of reproducibility of the action of rare earth elements, etc., to achieve better conductivity, improve capacity preservation, and reduce early Effects of Capacity Fade and Thermal Runaway Bulging Issues

Inactive Publication Date: 2010-06-16
江苏贝思特动力电源有限公司
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AI Technical Summary

Problems solved by technology

Adding rare earth elements into the lead-calcium alloy makes the alloy have excellent electrical conductivity and high-current discharge performance. It is suitable for starting batteries, energy storage batteries, etc., but due to the influence of "antimony-free effect", it is not very suitable for manufacturing. cycled battery
It is currently known to add a trace amount of rare earth elements to the lead-antimony alloy, in order to avoid the "antimony-free effect" of the alloy, and at the same time to inhibit the corrosion migration of antimony in the alloy, so as to improve the life of the storage battery; There is a critical point in the content for changing the properties of the alloy. In the actual alloy preparation and use process, because the alloy is in a molten state for a long time, the rare earth elements are easily oxidized and become scum, resulting in the loss of the role of the rare earth elements in the alloy. Presentity

Method used

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  • Rare earth alloy of anode plate grid for lead-acid storage battery
  • Rare earth alloy of anode plate grid for lead-acid storage battery

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0010] 1.2 The battery prepared by the above two alloys in accordance with the capacity preservation capacity test of the "electric help vehicle sealing lead-acid battery GB22199-2008"., Increase the capacity preservation capacity of the battery from 88 % to 93 %.

[0011] Example 2: Select the percentage of each component as follows: 锑: 1.4 %, arsenic: 0.25 %, tin: 0.21 %, selenium: 0.01 %, sulfur: 0.005 %, copper: 0.048 %, the rest are preparation to ordinary low 锑 锑Metal C; then select the same mass percentage of the same mass, arsenic, tin, tin, selenium, sulfur, and copper according to the above quality percentage, and adds a pupae of 0.18 % of the mass of 0.09 %.Use alloy C and D to make positive plate grills and assemble the 12V10AH battery for electric vehicles with 8 vehicles in the 7 -chip structure of each one -cell neutral pole. The negative electrode still uses the universal negative lead calcium alloy in the market.

example 2

[0012] 2.1 By discharged to 10.5V in accordance with the constant current 5A, then the constant voltage 14.4V, the current limit of 1.8A charging for 10 hours, for a complete cycle, the life cycle test of 100 % discharge depth.When %, the life span is terminated.The test results reproduced the results of the example 1 again.

[0013] 2.2 For the two batteries prepared in different alloys in this example, the capacity preservation capacity test is performed in accordance with the "electric help vehicle sealing lead-acid battery GB22199-2008".The capacity preservation capacity is increased by about 5 % to 7 %; the test results reproduce the results of the example 1.

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Abstract

The invention discloses a rare earth alloy of an anode plate grid for a lead-acid storage battery, which belongs to the technical field of manufacturing the plate grid of the lead-acid storage battery. The alloy comprises lanthanum and cerium as rare earth elements and comprises the following components in percentage by mass: 0.1-0.2 percent of lanthanum, 0.06-0.15 percent of cerium, 1.2-1.5 percent of antimony, 0.15-0.26 percent of arsenic, 0.15-0.25 percent of tin, 0.007-0.015 percent of selenium, 0.004-0.005 percent of sulfur, 0.04-0.05 percent of copper and the balance of lead. The rare earth alloy determines the reasonable proportioning of the lanthanum, the cerium and other components, is used for manufacturing the anode plate grid for the lead-acid storage battery and can effectively improve the corrosion resistance and the electrochemical performance of the plate grid, thereby further prolonging the deep circulating life of the lead-acid storage battery and improving the capacity holding capability.

Description

Technical field [0001] The present invention involves a rare alloy of a lead -acid storage battery for a positive plate grid, which belongs to the production field of lead -acid battery grids. Background technique [0002] The board grid is a key component of a lead -acid battery, which has a decisive impact on the performance of the battery.In order to achieve the requirements of lead -acid battery sealing and less maintenance, its positive plate grid requires good corrosion resistance and good interface conductivity.At present, lead calcium alloy or lead alloys are generally used in the industry; although lead calcium alloys have high oxygen analysis and small gas analysis, but due to poor corrosive membrane conductivity formed by calcium, the lead -acid batteries are prone to early capacity attenuation and charging acceptance.The life span caused by insufficient ability is ended in advance; the corrosion resistance resistance of the leading alloy is not high, causing the capac...

Claims

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Application Information

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IPC IPC(8): H01M4/68C22C11/08
CPCY02E60/12Y02E60/10
Inventor 林晓东丁同臣徐志彬
Owner 江苏贝思特动力电源有限公司
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