Negative electrode lead paste of lead-acid storage battery

A lead-acid battery, negative lead paste technology, applied in lead-acid battery electrodes, battery electrodes, circuits, etc., can solve the problems of reducing the gas evolution potential of the negative electrode, increasing the amount of evolved gas, and low carbon components, and achieving water absorption. Good, improve low temperature performance, small particle size effect

Inactive Publication Date: 2014-05-07
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional lead-acid battery negative electrode paste formula is mainly composed of lead powder, sulfuric acid, water, carbon, and lignin, humic acid, barium sulfate and other expansion agents mixed in a certain proportion, and the content of carbon components in this formula is Very low, that is because the increase in the content of carbon materials improves the performance of the battery, but the presence of carbon materials will reduce the gas evolution potential of the negative electrode, resulting in an increase in the amount of gas evolved during the use of the battery, severe water loss and shortened life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: The percentage by weight of each component of described lead plaster is: lead powder 77.5%, sulfuric acid 6%, water 11.5%, short fiber 0.1%, lignin 0.3%, humic acid 0.1%, barium sulfate 1.2%, Titanium oxide 3% and carbon 0.3%. In this plan, the percentages of each component are relatively average. The proportion of titanium oxide and carbon is not very high. Properly increasing the performance of the negative plate will not lead to a decrease in the gas evolution potential of the negative electrode. Material.

Embodiment 2

[0018] Embodiment 2: the percentage by weight of each component of described lead plaster is: lead powder 70%, sulfuric acid 15%, water 5%, short fiber 2%, lignin 2%, humic acid 2%, barium sulfate 2%, Titanium oxide 0.1% and carbon 1.9%. In this scheme, short fibers, lignin, humic acid, and barium sulfate have a relatively high proportion. These elements can improve the performance of the battery plate’s resistance to vibration, cycle resistance, and lead paste. .

Embodiment 3

[0019] Embodiment 3: the percentage by weight of each component of described lead plaster is: lead powder 90%, sulfuric acid 3%, water 5%, short fiber 0.05%, lignin 0.05%, humic acid 0.05%, barium sulfate 0.05%, Titanium oxide 0.1% and carbon 1.7%. In this solution, the proportion of lead powder is relatively high. The role of lead powder in lead paste is obvious, which is to increase the capacity of the battery and prolong the service time.

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PUM

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Abstract

The invention discloses negative electrode lead paste of a lead-acid storage battery. The negative electrode lead paste of the lead-acid storage battery comprises the following components in percentage by weight: 70-90% of lead powder, 3-15% of sulfuric acid, 5-20% of water, 0.05-2% of short fiber, 0.05-2% of lignin, 0.05-2% of humic acid, 0.05-2% of barium sulfate, 0.1-20% of titanium oxide and 0-10% of carbon. According to the negative electrode lead paste of the lead-acid storage battery, the content of carbon in the components is increased; a material which cannot cause the reduction of negative electrode gassing electric level is generated, so that the performance of a negative electrode plate is improved.

Description

technical field [0001] The invention relates to a negative lead paste of a lead-acid accumulator, in particular to a paste-applied negative electrode of a valve-controlled sealed lead-acid accumulator. Background technique [0002] With the development of the lead-acid battery industry, new application areas such as micro-hybrid vehicles and low-speed electric road vehicles have emerged, so the technical indicators of lead-acid batteries such as low-temperature performance, charging acceptance capacity and under-charged cycle have been higher. The improvement of these properties is related to the negative electrode. The traditional lead-acid battery negative electrode paste formula is mainly composed of lead powder, sulfuric acid, water, carbon, and lignin, humic acid, barium sulfate and other expansion agents mixed in a certain proportion, and the content of carbon components in this formula is Very low, that is because the increase in the content of carbon materials impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/57H01M4/62H01M4/14
CPCH01M4/14H01M4/57H01M4/624Y02E60/10
Inventor 周明明马永泉王振波李丽任晴晴
Owner CHAOWEI POWER CO LTD
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