Disassembling and recycling process of power battery
A power battery and process technology, applied in the field of power battery dismantling and recycling process, can solve problems such as hidden safety hazards, toxic gases, easy access to battery waste liquid, etc., achieve good economic and social benefits, improve the effective recovery rate, avoid The effect of secondary pollution
Inactive Publication Date: 2017-05-10
王剑
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Problems solved by technology
At present, the domestic power battery recycling industry is still in the initial stage of exploration, and the degree of automatic dismantling of power batteries is low, mainly relying on manual dismantling
[0003] In the process of dismantling and recycling the power battery, how to efficiently separate the protective shell of the power battery from the battery base is a key issue. If the separation method is not selected properly, the battery will short-circuit, catch fire or even explode, and produce certain toxic gases. There are safety hazards in the operation. In addition, in the process of manual operation, the operator is easy to come into contact with the battery waste, which is harmful to health.
Method used
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Experimental program
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Embodiment
[0020] The steps in this scheme are all carried out in a confined space. Disassemble the used power battery pack, soak the single battery in salt water for discharge treatment, soak for 10-12 hours, so that the discharge voltage of the used battery is lower than 0.3V, and prevent the battery from being damaged due to residual atomic lithium during the batch dismantling process. Explosion caused by short circuit or temperature, improving the safety of the environment.
[0021] After the battery is discharged, laser cut the connection between the battery pole piece and the pole piece, and separate the battery pole piece from the pole piece. The liquid is sucked out, and the electrolyte is collected for secondary recovery.
[0022] After removing the electrolyte, the positive electrode sheet, negative electrode sheet, and separator in the battery still have residual electrolyte attached to it. Separate the positive electrode sheet, negative electrode sheet, and separator in the ...
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The invention provides a disassembling and recycling process of a power battery. The disassembling and recycling process of the battery comprises the following steps: carrying out discharging treatment on a waste battery; cutting the discharged battery; removing residual electrolyte in the battery; separating the battery without the electrolyte into a positive electrode piece, a negative electrode piece and a diaphragm, adding the positive electrode piece, the negative electrode piece and the diaphragm into de-ionized water for immersing, and washing; after washing the positive electrode piece and the negative electrode piece, drying and carrying out high-temperature calcining respectively; separate powder on the electrode pieces of the battery from a metal sheet; recycling the metal sheet, positive electrode powder and negative electrode powder respectively. According to the disassembling and recycling process of the power battery, all parts in the battery are disassembled and separated respectively, and are subjected to resource recycling treatment, and the residual electrolyte, a battery solid structure, a positive electrode and a negative electrode and the like are recycled by classification; the process for treating the waste battery in batches for recycling is adopted so that the effective recycling rate of all products is improved and the treatment cost is improved; secondary pollution to the battery is also avoided and the process has good economic benefits and social benefits in a whole comprehensive recycling and utilization process.
Description
technical field [0001] The invention relates to the technical field of power battery recycling, in particular to a power battery dismantling and recycling process. Background technique [0002] Power battery refers to a battery with large electric energy capacity and output power, which can be equipped with driving energy for electric bicycles, electric vehicles, electric equipment and tools. With the vigorous development of new energy electric vehicles, the power battery market is showing rapid growth. At the same time, the amount of scrapped power batteries is increasing. The recycling of scrapped power batteries has become an important factor affecting the development of the power battery industry. At present, the domestic power battery recycling industry is still in the initial stage of exploration, and the degree of automatic dismantling of power batteries is low, mainly relying on manual dismantling. [0003] In the process of dismantling and recycling the power batte...
Claims
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IPC IPC(8): H01M10/54
CPCY02W30/84H01M10/54
Inventor 王坚
Owner 王剑