Lead-acid accumulator anode diachylon and preparation method thereof

A lead-acid battery, positive lead paste technology, applied in lead-acid battery electrodes, battery electrodes, circuits, etc., can solve problems such as shortening battery life, hindering ion conduction in pores, and falling off active substances, and improving capacity and life. , The effect of reducing chemical power consumption and improving bonding force

Inactive Publication Date: 2009-05-06
李志华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Reaction product PbSO 4 The poor conductivity prevents the internal active material from continuing to participate in the electrode reaction;
[0005] (2) PbSO is preferentially formed on the surface of the electrode than inside 4 Because of the increase in molar volume, the pores between the active substances are blocked, which hinders the conduction of ions in the pores;
[0006] (3) The disintegration of the gel-network structure of the active material causes the active material to soften and fall off prematurely, thereby prematurely losing the initial capacity of the battery and shortening the service life of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Put 100kg of lead powder (degree of oxidation 73-78%) into the pasting machine with heat exchanger. At the same time, add 6 kg of red lead and 0.15 kg of bismuth oxide and stir for 5 to 15 minutes. While stirring, pour 9kg of deionized water into it, and stir for 15-25 minutes. Then add PTFE emulsion 7kg, stir evenly. Add 1.35g / cm by spraying 3 Sulfuric acid 11kg, the time lasts about 15 to 25 minutes, and the temperature of the lead paste is controlled at 55 to 65°C through a heat exchanger. Continue to stir for 5-10 minutes and then take out of the pan.

[0028] A 12V10 battery was assembled from the pole plates using the lead paste of the above examples, and tested according to the regulations in JB / T10262-2001. The 2-hour rate discharge time of the battery can reach more than 150 minutes. The life cycle of the battery can reach more than 600 times, which greatly exceeds the standard requirements.

Embodiment 2

[0030] Put 100kg of lead powder (degree of oxidation 73-78%) into the pasting machine with heat exchanger. At the same time, add 3 kg of red lead and 0.08 kg of bismuth oxide and stir for 5 to 15 minutes. While stirring, pour 8kg of deionized water into it, and stir for 15 to 25 minutes. Then add PTFE emulsion 6kg, stir evenly. Add 1.35g / cm by spraying 3 Sulfuric acid 7kg, the time lasts about 15 to 25 minutes, and the temperature of the lead paste is controlled at 55 to 65°C by a heat exchanger. Continue to stir for 5-10 minutes and then take out of the pan.

[0031] A 12V10 battery was assembled from the pole plates using the lead paste of the above examples, and tested according to the regulations in JB / T10262-2001. The 2-hour rate discharge time of the battery can reach more than 140 minutes. The life cycle of the battery can reach more than 580 times, which greatly exceeds the standard requirements.

Embodiment 3

[0033] Put 100kg of lead powder (degree of oxidation 73-78%) into the pasting machine with heat exchanger. At the same time, add 7kg of red lead and 0.2kg of bismuth oxide and stir for 5 to 15 minutes. Pour in 12kg of deionized water while stirring, and stir for 15 to 25 minutes. Then add PTFE emulsion 10kg, stir evenly. Add 1.35g / cm by spraying 3 Sulfuric acid 13kg, the time lasts about 15-25 minutes, and the temperature of the lead paste is controlled at 55-65°C by a heat exchanger. Continue to stir for 5-10 minutes and then take out of the pan.

[0034] A 12V10 battery was assembled from the pole plates using the lead paste of the above examples, and tested according to the regulations in JB / T10262-2001. The 2-hour rate discharge time of the battery can reach more than 160 minutes. The life cycle of the battery can reach more than 630 times, which greatly exceeds the standard requirements.

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Abstract

The invention relates to an anode of a lead acid storage battery, in particular to a lead plaster for an anode of a lead acid battery and a preparation method thereof. The lead plaster comprises the following components by weight: 100 portions of lead powder, 7 to 13 portions of 1.35g/cm<3> sulfuric acid, 8 to 12 portions of deionized water, 3 to 7 portions of red leads, 6 to 10 portions of six percent of PTFE emulsion and 2 portions of bismuth oxide 0.08-0 anode. Due to the addition of the red leads, the invention ensures that the pressure of a groove is lower when an unformed plate is formed, reduces the forming power consumption, and improves the contents of the lead dioxide of the plate. Due to the addition of PTFE, bismuth oxide and other components, the capacity and the service life of the battery are ensured to be improved.

Description

technical field [0001] The invention relates to a positive electrode of a lead-acid storage battery, in particular to a positive electrode paste of a lead-acid storage battery and a preparation method thereof. Background technique [0002] With the rising oil prices, electric vehicles, which have less emissions and lower energy consumption, are rapidly developing in various places. The development experience of the electric vehicle market shows that in order to obtain the widest range of popularization of electric vehicles, people are still most concerned about its power part - the chemical power supply. Although some new chemical power sources, such as nickel-metal hydride batteries, lithium-ion batteries and fuel cells, have been included in the research and development, in the near future, among a variety of alternative chemical power sources, valve-regulated sealed lead-acid batteries are still the most important. With the best performance, price ratio and the most matu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/16H01M4/36
CPCY02E60/126Y02E60/10
Inventor 李志华
Owner 李志华
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