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A method for manufacturing lead-acid storage battery plates that reduces the powder shedding rate on the surface of the plates

A lead-acid battery and production method technology, applied in the direction of lead-acid battery electrodes, etc., can solve the problems of cycle life attenuation and low battery capacity, and achieve the effects of reducing floating powder, enhancing internal binding force, and solving low battery capacity.

Active Publication Date: 2020-05-29
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of low battery capacity and premature attenuation of cycle life due to the micro-short circuit caused by floating powder during formation in the prior art, and to provide a lead storage battery pole plate manufacturing method that reduces the powder drop rate on the pole plate surface, reducing Floating powder in the process of brushing, effectively improving battery capacity and cycle life
At the same time, when the battery is filled with acid and formed, the temperature rise is suppressed by the endothermic dissolution of the polymerization reaction, which can effectively avoid the problem that the internal temperature of the battery is too high during the acid addition stage and the formation effect is not good.

Method used

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  • A method for manufacturing lead-acid storage battery plates that reduces the powder shedding rate on the surface of the plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for manufacturing a lead storage battery pole plate for reducing the powder shedding rate on the surface of the pole plate, comprising the following steps:

[0031] 1. Blending process

[0032] After mixing 1000 parts by mass of lead oxide powder and additives in the paste machine, add 5 parts by weight of acrylic resin binder polyethylene glycol diacrylate and stir slowly for a period of time, then add deionized water and sulfuric acid solution, To prepare lead paste, slowly add the prepared sulfuric acid to the above-mentioned wet-mixed positive and negative lead pastes for acid mixing, and the mixing is carried out in four stages:

[0033] A. When the temperature of the lead paste is below 48°C, control the addition rate of sulfuric acid at 0.17%L / s, where the above-mentioned L represents the volume of the sulfuric acid solution,

[0034] B. When the temperature of the lead paste is between 48 and 57°C, adjust the addition rate of sulfuric acid to 70% of th...

Embodiment 2

[0045] 1. Blending process

[0046] After mixing 1000 parts by mass of lead oxide powder and additives in the paste machine, add 15 parts by weight of acrylic resin binder polyethylene glycol diacrylate and slowly stir for a period of time, then add deionized water and sulfuric acid solution, prepared as lead paste

[0047] Slowly add the prepared sulfuric acid into the positive and negative electrode pastes after wet mixing, respectively, for acid mixing, and the mixing is carried out in four stages:

[0048] A. When the temperature of the lead paste is below 48°C, control the addition rate of sulfuric acid at 0.22%L / s, where the above-mentioned L represents the volume of the sulfuric acid solution,

[0049] B. When the temperature of the lead paste is between 48 and 57°C, adjust the addition rate of sulfuric acid to 85% of the original flow rate,

[0050]C. When the temperature of the lead paste is between 57 and 68°C, adjust the addition rate of sulfuric acid to 60% of th...

Embodiment 3

[0060] 1. Blending process

[0061] In the paste machine, 1000 parts by mass of lead oxide powder and additives are mixed evenly, then add 20 parts by weight of acrylic resin binder polyethylene glycol dimethacrylate and stir slowly for a period of time, then add deionized water and sulfuric acid The solution is prepared into a lead paste, and the sulfuric acid of the prepared material is slowly added to the above-mentioned wet-mixed positive and negative lead pastes for acid mixing, and the mixing is carried out in four stages:

[0062] A. When the temperature of the lead paste is below 48°C, control the addition rate of sulfuric acid at 0.2%L / s, where the above-mentioned L represents the volume of the sulfuric acid solution,

[0063] B. When the temperature of the lead paste is between 48 and 57°C, adjust the addition rate of sulfuric acid to 80% of the original flow rate,

[0064] C. When the temperature of the lead paste is between 57 and 68°C, adjust the addition rate of...

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Abstract

The invention discloses a lead storage battery electrode plate production method for reducing the powder shedding rate of the surface of an electrode plate. The lead storage battery electrode plate production method comprises: making a paste, and coating or spraying the surface of an electrode plate, wherein the paste making comprises adding an electric conduction binder and controlling an acid adding rate and a temperature so as to change the structure of the lead paste, and during the coating or the spraying, the active substance on the surface of the electrode plate is connected by using apolymer sol, such that the floating powder during the sheet brushing can be reduced by improving the binding force between the electrode plate surface and the coating, the problems of low battery capacity, subsequent short circuit and the like due to the floating power during the formation can be easily solved, and the polymer sole is dissolved into the electrolyte through the polymerization reaction along with the temperature increase when the electrode plate is assembled into the battery and filling formation is performed so as to effectively improve the poor formation effect caused by the too high temperature in the battery at the initial stage of the acid mixing.

Description

technical field [0001] The invention relates to the technical field of lead-acid battery manufacturing, in particular to a method for manufacturing a lead storage battery pole plate which reduces the powder shedding rate on the surface of the pole plate. Background technique [0002] Lead-acid batteries have the characteristics of low price, convenient use and stable performance, and have been widely used in various fields. As one of the main bodies used in secondary power supplies, they occupy a large share in the market. However, as the country continues to introduce environmental protection policies, it means that the production process of lead-acid battery manufacturers should meet the requirements of environmental friendliness. [0003] There are strict regulations on the use and recycling of lead-acid batteries. The waste or raw materials generated in the process can be greatly reduced, which can effectively reduce the environmental protection pressure of lead-acid ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/20
CPCH01M4/20Y02E60/10
Inventor 吴亮柯娃张绍辉
Owner CHAOWEI POWER CO LTD
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