An assembly process of inner fine-tuning cylindrical battery core

Abstract

The invention discloses an assembly process of an internal fine-tuning cylindrical battery cell, which belongs to the technical field of lithium batteries. An internal fine-tuning cylindrical battery cell assembly process can be configured by setting a fine-tuning collar between the battery core and the inner wall of an external casing, so that the The large internal uneven adjustment block inside can provide greater support for the concave part of the cell, so that the force of the cell in this part becomes denser, the internal gap is reduced, and the fuller part is aligned with the smaller part. The internal unevenness adjustment block or the part without the internal unevenness adjustment block makes this part less supported by the fine-tuning collar compared with the concave part, which effectively compensates for the tightness of the plump part itself and the small gap, which leads to the infusion process. In the middle, the infiltrated electrolyte is less, which makes the electrolyte infiltrated in the whole cell uneven, so as to achieve the effect of adjusting the uniformity of the electrolyte infiltrated in the cell as a whole, thereby effectively improving the quality of the lithium battery obtained in the later stage and effectively prolonging the life of the lithium battery. Lithium battery life.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, and more specifically, relates to an assembly process of inner fine-tuning cylindrical batteries. Background technique [0002] Since the birth of the ion battery, its production process has been continuously updated, especially the assembly technology. Due to the broad design concept and the increasing automation of equipment, it is the place where the most technological transformation and the fastest efficiency improvement. Lithium-ion battery: It is a secondary battery (rechargeable battery) that mainly relies on lithium ions to move between the positive and negative electrodes to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: during charging, Li+ deintercalates from the positive electrode, intercalates into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the object of the present invention is to provide an assembly process for inner fine-tuning cylindrical battery cells, which can make the inner larger The internal unevenness adjustment block can provide greater support for the concave part of the cell, so that the force of the cell in this part becomes denser, the internal gap is reduced, and the relatively full part is aligned with the smaller internal unevenness adjustment block Or there is no internal uneven adjustment block, so that this part is less supported by the fine-tuning collar compared to the concave part, and then effectively compensates for the tightness of the plump part itself and the small gap, which leads to the electrolysis of the infiltration during the liquid injection process. There is less liquid, which makes the electrolyte infiltrated in the whole cell uneven, so as to achieve the effect of adjusting the uniformity of the electrolyte infiltrated in the cell as a whole, thereby effectively improving the quality of the lithium battery obtained in the later stage, and effectively prolonging the service life of the lithium battery

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