Regeneration method of waste lithium ion battery shell

A technology for lithium-ion batteries and shells, which is applied in the field of regeneration of waste lithium-ion battery shells, can solve problems such as residual stains and performance degradation, and achieve the effects of reducing processing costs, facilitating processing and use, and good soaking effects

Pending Publication Date: 2022-03-11
安徽南都华铂新材料科技有限公司
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AI-Extracted Technical Summary

Problems solved by technology

Lithium batteries are widely used in power machinery and equipment due to their excellent charge and discharge performance. Lithium batteries need to be dismantled and recycled professionally, but ...
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Method used

The lithium-ion battery casing after soaking is washed with water, then placed in the cleaning solution and soaked for 20min, mixed by oxidant hydrogen peroxide 15kg, water 70kg, gelatin 6kg, then under the effect of 80HZ ultrasonic cleaning, the lithium-ion battery The surface of the shell is cleaned for 20 minutes. The cleaning liquid uses the thickening effect of gelatin, so that the gelatin can adhere to the particles entering the cleaning liquid on the lithium-ion battery shell, so that the surface of the lithium-ion battery shell is thoroughly cleaned. The free radicals and oxygen molecules generated by the decomposition of hydrogen peroxide under the action can be bound by gelatin, which prevents the rapid escape of oxygen molecules from the cleaning solution, and under the oxidation of oxygen molecules and free radicals, the surface of the lithium-ion battery casing forms a dense layer again. Oxide film, so that the surface of the lithium-ion battery shell after cleaning with the cleaning solution has stronger corrosion resistance.
The lithium-ion battery shell after soaking is washed with water, then placed in the cleaning solution and soaked for 10min, mixed by oxidant hydrogen peroxide 10kg, water 60kg, gelatin 3kg, then under the effect of 80HZ ultrasonic cleaning, to the lithium-ion battery The surface of the shell is cleaned for 10 minutes. The cleaning liquid uses the thickening effect of gelatin, so that the gelatin can adhere to the particles entering the cleaning liquid on the lithium-ion battery shell, so that the surface of the lithium-ion ...
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Abstract

The invention discloses a regeneration method of a waste lithium ion battery shell, which comprises the following steps: soaking the lithium ion battery shell in a soaking solution at 30-50 DEG C for 20-30 minutes; the soaked lithium ion battery shell is washed with water, then the lithium ion battery shell is placed in a cleaning solution to be soaked for 10-20 min, and then the surface of the lithium ion battery shell is cleaned under the action of ultrasonic cleaning; the cleaned lithium ion battery shell is washed with water and then dried, cutting, grinding, repairing, surface grinding and polishing are carried out, and the regenerated lithium ion battery shell is obtained.The defects in the prior art are overcome, the regeneration method is simple in process, soaking liquid and cleaning liquid used in the regeneration process are environmentally friendly and free of pollution, and the regeneration process is simple. The treatment cost after regeneration is reduced, and the regenerated lithium ion battery shell processed by the regeneration method is clean in surface and convenient for subsequent processing and use.

Application Domain

Non-surface-active detergent compositionsWaste accumulators reclaiming +2

Technology Topic

Lithium electrodeLithium-ion battery +4

Examples

  • Experimental program(3)
  • Comparison scheme(3)

Example Embodiment

[0019] Example 1
[0020] The lithium ion battery housing was immersed in a 40 ° C soaking solution for soaking, soaked for 20 min, so that the intractable dust accumulated on the lithium ion battery housing was infiltrated, and the soaking solution was 15 kg of sodium carbonate, 1 kg of sodium chloride, 10 kg of citrate 10kg, water 60kg , The ethyl acetate oil layer is mixed, and the lithium ion battery housing is constantly vibrating during the soaking process, and the sodium carbonate in the immersion solution can be effectively removed, and the citric acid is cleared to the surface of the lithium ion battery housing. The sodium is used in combination with sodium carbonate, allowing the aqueous layer of the soaking solution to corrode the surface aluminum oxide film of the lithium ion battery housing, so that the stains of the surface of the lithium ion battery can obtain effective removal, while sodium chloride It is possible to provide chloride ions and sodium ions for the soaking solution, increase the ion concentration, so that the immersion liquid during the soaking process is stronger, and the soaking effect of dust such as dust is better, soaked, after soaking vibration, the lithium ion battery housing has no residual Stain.
[0021] The soaked lithium ion battery housing was washed, followed by soaking in the washing liquid for 10min, 10 kg of oxidant hydroside, 60 kg, gelatin 3 kg, and then under the action of 80 Hz ultrasonic cleaning, the surface of the lithium ion battery housing Cleaning, the cleaning time is 10 min, the cleaning solution utilizes gelatin thickening effects, enabling gelatin to adhere to particulate matter enters the cleaning liquid on the lithium ion battery housing, so that the surface of the lithium ion battery housing is completely cleaned, while in ultrasound The free radicals and oxygen molecules generated by the decomposition can be bound by gelatin, avoiding the oxygen molecules to escape from the cleaning liquid, and under an oxidation of oxygen molecules and free radicals, the surface of the lithium ion battery housing is again formed in a layer of dense oxide film. The surface of the lithium ion battery housing after cleaning liquid cleaner has stronger corrosion resistance.
[0022] The cleaning lithium ion battery housing was rinsed with water, and then dried, the dried lithium ion battery housing was removed using a cutting machine to remove the damaged portion of its top, followed by polishing the cutting section.
[0023] Since the portion of the lithium ion battery housing is broken, it is necessary to weld the damaged lithium ion battery housing after wear, and then polished, polished to the solder, and to obtain a regenerated lithium ion battery housing.

Example Embodiment

[0024] Example 2
[0025] The lithium ion battery housing was immersed in a 50 ° C soaking solution for soaking, so that the intractable dust accumulated on the lithium ion battery housing was infiltrated, and the soaking solution was 20 kg of sodium carbonate, 2 kg of sodium chloride, 15 kg of citrate, 70 kg of water, acetate The ester oil layer 30kg is mixed, and the lithium ion battery housing is constantly vibrating, soaking 30 min, soaking 30 min, the sodium carbonate in the immersion solution can be effectively removed, and the grease substance on the surface of the lithium ion battery is cleared, while citric acid The sodium is used in combination with sodium carbonate, allowing the aqueous layer of the soaking solution to corrode the surface aluminum oxide film of the lithium ion battery housing, so that the stains of the surface of the lithium ion battery can obtain effective removal, while sodium chloride It is possible to provide chloride ions and sodium ions for the soaking solution, increase the ion concentration, so that the immersion liquid during the soaking process is stronger, and the soaking effect of dust such as dust is better, soaked, after soaking vibration, the lithium ion battery housing has no residual Stain.
[0026] The soaked lithium ion battery housing was washed, followed by soaking in the washing liquid for 20 minutes, 20 kg of oxidant hydrogen peroxide, 80 kg, gelatin 8 kg, and then under the action of 80 Hz ultrasonic cleaning, the surface of the lithium ion battery housing Cleaning, the cleaning time is 20 min, the cleaning solution utilizes gelatin thickening, so that gelatin can adhere to the particulate matter of the lithium ion battery housing into the cleaning liquid, so that the surface of the lithium ion battery housing is cleaned and thorough, while in ultrasound The free radicals and oxygen molecules generated by the decomposition can be bound by gelatin, avoiding the oxygen molecules to escape from the cleaning liquid, and under an oxidation of oxygen molecules and free radicals, the surface of the lithium ion battery housing is again formed in a layer of dense oxide film. The surface of the lithium ion battery housing after cleaning liquid cleaner has stronger corrosion resistance.
[0027] The cleaning lithium ion battery housing was rinsed with water, and then dried, the dried lithium ion battery housing was removed using a cutting machine to remove the damaged portion of its top, followed by polishing the cutting section.
[0028] Since the portion of the lithium ion battery housing is broken, it is necessary to weld the damaged lithium ion battery housing after wear, and then polished, polished to the solder, and to obtain a regenerated lithium ion battery housing.

Example Embodiment

[0029] Example 3
[0030] The lithium-ion battery housing was immersed in a 40 ° C soaking solution for soaking, so that the intractable dust accumulated on the lithium ion battery housing was infiltrated, the soaking solution was 20 kg of sodium carbonate, 2 kg of sodium chloride, 15 kg of citrate, 70 kg, acetic acid The ester oil layer 25kg is mixed, and the lithium ion battery housing is continuously vibrated during the soaking process, soaked for 30 min, sodium carbonate in the immersion solution can effectively remove the oil content of the surface of the lithium ion battery housing, while citric acid The sodium is used in combination with sodium carbonate, allowing the aqueous layer of the soaking solution to corrode the surface aluminum oxide film of the lithium ion battery housing, so that the stains of the surface of the lithium ion battery can obtain effective removal, while sodium chloride It is possible to provide chloride ions and sodium ions for the soaking solution, increase the ion concentration, so that the immersion liquid during the soaking process is stronger, and the soaking effect of dust such as dust is better, soaked, after soaking vibration, the lithium ion battery housing has no residual Stain.
[0031] The soaked lithium ion battery housing was washed, followed by soaking in the cleaning solution for 20 minutes, from 15 kg of oxidant, 70 kg, gelatin 6 kg, and then under the action of 80 Hz ultrasonic cleaning, the surface of the lithium ion battery housing Cleaning, the cleaning time is 20 min, the cleaning solution utilizes gelatin thickening, so that gelatin can adhere to the particulate matter of the lithium ion battery housing into the cleaning liquid, so that the surface of the lithium ion battery housing is cleaned and thorough, while in ultrasound The free radicals and oxygen molecules generated by the decomposition can be bound by gelatin, avoiding the oxygen molecules to escape from the cleaning liquid, and under an oxidation of oxygen molecules and free radicals, the surface of the lithium ion battery housing is again formed in a layer of dense oxide film. The surface of the lithium ion battery housing after cleaning liquid cleaner has stronger corrosion resistance.
[0032] The cleaning lithium ion battery housing was rinsed with water, and then dried, the dried lithium ion battery housing was removed using a cutting machine to remove the damaged portion of its top, followed by polishing the cutting section.
[0033]Since the portion of the lithium ion battery housing is broken, it is necessary to weld the damaged lithium ion battery housing after wear, and then polished, polished to the solder, and to obtain a regenerated lithium ion battery housing.

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Description & Claims & Application Information

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