Pole piece lifting and conveying mechanism and production line thereof applied to rapid superposition of positive and negative pole pieces

Abstract

The invention relates to the technical field of batteries for new energy resources, and particularly relates to a pole piece lifting and conveying mechanism in a production line that is used for realizing the rapid staggered stacking of positive and negative pole pieces to form a bare battery cell. The pole piece lifting and conveying mechanism comprises a vertical conveying mechanism, wherein thevertical conveying mechanism comprises two vertical transmission chain sets and a driving mechanism for driving the two vertical transmission chain sets to work, each vertical transmission chain setis respectively fixedly connected with a plurality of pole piece brackets, the driving mechanism drives the two vertical transmission chain sets to move towards each other in opposite directions, thepole piece lifting and conveying mechanism realizes the high-efficiency multi-layer continuous vertical conveying of the pole pieces over a long distance, so that the stacking efficiency of the subsequent positive and negative pole pieces is further improved, and the operation is stable.

Description

technical field [0001] The invention relates to the technical field of new energy batteries, in particular to a pole piece lifting and conveying mechanism for vertically conveying multiple pole pieces and its application in a production line for realizing the fast interlaced stacking of positive and negative pole pieces to form bare cells. Background technique [0002] At present, the main production methods of lithium battery cells are stacking and winding. The stacking of the positive and negative electrodes of traditional cells is mainly based on the "Z"-shaped stacking process, which is mainly on a stacked workbench. The pole pieces of the negative electrode are alternately stacked in a single piece, and the action is: a piece of negative electrode piece--a layer of insulating film--a piece of positive electrode piece--a layer of insulating film--a piece of negative electrode piece--a layer of insulating film--a piece of Positive electrode sheet...and so on, only one ele...

AI Technical Summary

Problems solved by technology

[0002] At present, the main production methods of lithium battery cells are stacking and winding. The stacking of the positive and negative electrodes of traditional cells is mainly based on the "Z"-shaped stacking process, which is mainly on a stacked workbench. The pole pieces of the negative electrode are alternately stacked in a single piece, and the action is: a piece of negative electrode piece--a layer of insulating film--a piece of positive electrode piece--a layer of insulating film--a piece of negative electrode piece--a layer of insulating film--a piece of Positive electrode sheet...and so on, only one electrode sheet can be stacked at a time, and the efficiency is extremely low, that is, the insulating film is placed in a Z-shape to automatically realize the lamination of positive and negative electrode sheets, and finally get a bare cell, and it is subject to Affected by factors such as the lifting of the worktable, tension changes, and different pressing forces of the pressing jaws, the alignment accuracy of the stacked pole pieces and insulating films is low, and the production efficiency is low.

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