Regeneration method of waste lithium ion battery shell

[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.

[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.

[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.