Improving the heat shrinking process and heat shrinking device of the wavy edge of the diaphragm

Abstract

The invention provides a thermal shrinkage process for improving the wavy edge of the diaphragm, comprising the following steps: (1) preparing a rewinding roller, setting a plurality of shrinkable buffer strips at equal intervals on the outer surface of the rewinding roller, and each buffer strip is connected with the rewinding roller The axes of the winding rollers are parallel; (2) the diaphragm is wound on the rewinding roller provided with a buffer strip; (3) the rewinding roller wound with the diaphragm is baked under a certain temperature condition and kept for a certain period of time; ( 4) Take out the baked diaphragm and cool it at room temperature; (5) Coat the surface of the cooled diaphragm with a certain thickness of slurry. The beneficial effects of the present invention are: make the diaphragm uniform, reduce the phenomenon of bad waves after the diaphragm is coated, reduce the phenomenon of radian and size exceeding the specification after the diaphragm is cut into small strips, and improve the high-quality rate of the diaphragm. Rational use of production resources to reduce waste.

Description

technical field [0001] The invention relates to lithium battery manufacturing technology, in particular to a heat shrinking process and a heat shrinking device for improving the isolation of corrugated edges. Background technique [0002] At present, in the production and manufacturing process of domestic diaphragms, due to the uneven tension of the diaphragm and the failure of tension control, the diaphragm has serious wave defects after the finished diaphragm is shipped, and the wave defects appear after the diaphragm is coated, which affects the curvature of the diaphragm after it is cut into small strips. , The size exceeds the specification, and eventually the diaphragm cannot be used, resulting in waste of resources and increasing the production cost of the enterprise. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention provides a heat shrinking process and a heat shrinking device for improving the isolation of the wa...

AI Technical Summary

Problems solved by technology

[0002] At present, in the production and manufacturing process of domestic diaphragms, due to the uneven tension of the diaphragm and the failure of tension control, the diaphragm has serious wave defects after the finished diaphragm is shipped, and the wave defects appear after the diaphragm is coated, which affects the curvature of the diaphragm after it is cut into small strips. , The size exceeds the specification, which eventually leads to the failure of the diaphragm to be used, resulting in waste of resources and increasing the production cost of the enterprise

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