Battery cell winding method and winding equipment

Abstract

The invention provides a battery cell winding method, and belongs to the field of automatic equipment. The battery cell winding method comprises the following steps of unwinding process, in which a pole plate in a roll is unwound; die cutting process, in which the unwound pole plate is cut by a die; and winding process, in which the die-cut pole plate is wound to form a battery cell. Moreover, theinvention also discloses winding equipment. The existing battery cell winding process flow is improved, two steps of die cutting and winding are combined into one step, the pole plate is directly transferred to the winding process after unwinding in one time and after die-cutting process is completed, die cutting and winding are simultaneously performed, labor cost and time are reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a battery winding method and winding equipment, belonging to the field of automation equipment, in particular to the field of lithium battery manufacturing equipment. Background technique [0002] In the prior art, pole piece die-cutting and cell winding are two connected processes, which are respectively completed by two devices and cannot be performed synchronously. Such as figure 1 As shown, after the die-cutting of the pole piece is completed, it needs to be wound up and manually transported to the winding equipment, and the cell winding can only be completed after unwinding again. The process of unwinding, manual handling and rewinding of pole pieces is very time-consuming and affects production efficiency. [0003] On the other hand, after the pole piece is die-cut, the positive pole piece and the negative pole piece need to be wound together. Only when the pole piece is wound, it is known that the tab size and the dist...

AI Technical Summary

Problems solved by technology

The process of unwinding, manual handling and rewinding of pole pieces is very time-consuming and affects production efficiency

[0003] On the other hand, after the pole piece is die-cut, the positive pole piece and the negative pole piece need to be wound together. Only when the pole piece is wound, it is known that the tab size and the distance between the tabs of the die-cut pole piece need to be adjusted, and the pole piece is discovered. There is a die-cut quality problem

In the prior art, the pole pieces have been die-cut and cannot be adjusted again, which may cause the batch of pole pieces to be scrapped directly. Therefore, it is necessary to timely feed back the die-cutting quality problems of the pole pieces found during the winding process to the die-cutting process, and adjust Die-cutting parameters to solve this die-cutting quality problem in time

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