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Processing method after positive plate formation of accumulator

A positive plate and storage battery technology, applied in the direction of electrode manufacturing, etc., can solve the problems of poor dry charging performance of the battery, passivation of the positive plate, and long production time, and achieve the effects of small discharge voltage drop, improved production efficiency, and quick results

Active Publication Date: 2009-01-14
FENGFAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the positive plate, if the acid in the plate is not removed, it is easy to cause passivation of the positive plate, resulting in poor dry charging performance of the battery
In order to ensure the dry charging performance of the battery, the current common method is to wash the positive plate repeatedly, so that the positive plate can reach the requirement of pH = 4~6 after the washing process. In this way, a batch of positive plates need to be washed many times to meet the requirements. Long production time, low efficiency, high water consumption and heavy workload

Method used

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  • Processing method after positive plate formation of accumulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: add 100kg tap water in the water tank, take by weighing 500g of industrial boric acid and add in the water tank and stir to make it fully dissolve, be mixed with 0.5% boric acid solution, take 170 large pieces (about one shelf plate) of the positive plate just out of the chemical formation tank Soak for 10 minutes and take out the drying line; add 15kg of tap water and 70g of boric acid, take 170 large pieces of positive plates that have just come out of the chemical formation tank and soak for 12 minutes, then take them out of the drying line; add 15kg of tap water and 70g of boric acid The positive plate 170 of the tank was soaked for 12 minutes and then taken out of the drying line; after the above operation was repeated 10 times, the boric acid solution was turbid due to the phenomenon of powder falling off the positive plate, which affected the treatment effect, so the boric acid solution was released and a new one was prepared. Boric acid solution con...

Embodiment 2

[0014] Example 2: Add 100kg of tap water to the water tank, weigh 2000g of industrial boric acid, add it to the water tank and stir to make it fully dissolve, and prepare a 2% boric acid solution. Take 180 large pieces of positive plates that have just come out of the chemical formation tank and soak them for 10 minutes. Take out the drying line Add 15kg of tap water and 300g of boric acid, soak 180 large pieces of positive plates that have just come out of the tank for 10 minutes and then take them out of the drying line; add 15 kg of tap water and 300g of boric acid, and soak 180 large pieces of positive plates that have just come out of the tank After 10 minutes, take out the drying line; after the above operation is repeated 10 times, a new boric acid solution is prepared to continue production.

Embodiment 3

[0015] Example 3: Add 100kg of tap water to the water tank, weigh 3000g of industrial boric acid, add it to the water tank and stir to make it fully dissolve, and prepare a 3% boric acid solution, soak 190 large pieces of positive plates just out of the chemical formation tank for 11 minutes and take them out of the drying line Add 15kg of tap water and 450g of boric acid, soak 190 large pieces of positive plates that have just come out of the tank for 11 minutes and then take them out of the drying line; add 15 kg of tap water and 450g of boric acid, and soak 190 large pieces of positive plates that have just come out of the tank After 11 minutes, take out the drying line; after the above operation is repeated 10 times, a new boric acid solution is prepared to continue production.

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Abstract

The invention provides an accumulator positive plate-forming post-processing method which belongs to the field of battery technique and is used for reducing the problem that water is consumed for washing the positive plate. After improvement, boric acid solution is compounded for acid-removal process after the positive plate-forming according to the consistency proportion of 0.5 to 3 percent; subsequently, the positive plate which is just taken out of a reduction trough is dipped into the boric acid for 10 to 12 minutes, and is subsequently dried. The method of the invention uses the industrial boric acid solution used for dipping the positive plate to replace the water washing procedure of the positive plate; the water consumption quantity is less than 1 / 4 of that of the original process and the production efficiency is improved by almost two times. The comparison detection data indicates that the positive plate processed by the method of the invention can compare the performance of the positive plate by carrying out the memory and single-lattice discharging; the memorized discharging voltage reduction is less than the discharging voltage reduction of the original process, the effect of which is more obvious especially when the positive plate is memorized for 30 days. The method of the invention has the advantages of quick effect, easy realization, obvious effect and good practicability.

Description

technical field [0001] The invention relates to a post-formation post-processing method for a battery positive plate, in particular to a post-formation post-treatment method for a dry-charged battery positive plate, which belongs to the technical field of storage batteries. Background technique [0002] At present, lead-acid batteries for automobile starting mainly fall into two categories: dry-charged and maintenance-free. Due to its excellent cost performance, dry-charged batteries occupy an important position in the market. Car users require that the dry-charged battery can start the vehicle 20 minutes after adding electrolyte, which requires the battery to have excellent dry-charged performance. Formation refers to the process of converting raw plates into cooked plates through chemical and electrochemical reactions in sulfuric acid solution. After formation, the positive plate is mainly composed of lead dioxide, the negative plate is mainly spongy metal lead, and the p...

Claims

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Application Information

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IPC IPC(8): H01M4/04
CPCY02E60/10
Inventor 许运洲王廷华魏立平毛治国周胜文王再红陈晓琴
Owner FENGFAN
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