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Process for reducing area and thickness of overlapping area during lithium battery coating

A technology for lithium batteries and overlapping areas, which is applied in the manufacture of secondary batteries, non-aqueous electrolyte batteries, electrolyte batteries, etc., and can solve problems such as easy generation of air bubbles, warping, and affecting the overall size of the battery

Inactive Publication Date: 2020-05-26
广东德尚智能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The overlapping area and other places form steps that are prone to bubbles, wrinkles, and warping, and the gaps in the overlapping area are easily immersed by water vapor, which will seriously affect the quality of the battery
[0004] There will be steps in the overlapping area of ​​the adhesive tape during film coating, which will affect the overall size of the battery. Due to the steps formed between the overlapping area of ​​the adhesive tape and other areas of the adhesive tape, problems such as air bubbles, wrinkles, and warping will easily occur.
Existing technology cannot solve

Method used

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  • Process for reducing area and thickness of overlapping area during lithium battery coating
  • Process for reducing area and thickness of overlapping area during lithium battery coating
  • Process for reducing area and thickness of overlapping area during lithium battery coating

Examples

Experimental program
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Effect test

Embodiment 2

[0019] see figure 2 with image 3 , the present embodiment is a U-shaped coating process, and its specific process is as follows: first, the film is cut by using a power square lithium battery with a laser cutting film unwinding device, and then the bottom surface is wrapped; the two sides are wrapped; the glue on both sides is cut; Short glue on both sides of the bag; long glue on both sides of the bag; then cut the top glue; Adhesive paper unwinding and unwinding assembly 1, laser cutting film moving assembly 2 and laser generator assembly 3; adhesive paper unwinding and ungluing assembly 1 is set up with laser cutting film moving assembly 2 above the front side, and laser generator assembly 3 is set up on the laser cutting machine. The top of the film movement assembly 2, and one end of the laser generator assembly 3 is fixed on the ground with a bracket; when the device is working, the adhesive tape is unwound and the ungluing assembly 1 performs the ungluing movement to...

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Abstract

The invention discloses a process for reducing the area and thickness of an overlapping area during lithium battery coating, and relates to the technical field of power square-shell battery coating. The process specifically comprises the steps of firstly, notching a film by using a power square-shell lithium battery belt laser film cutting and unwinding device, and then coating the front side surface; coating two large surfaces; coating the rear side surface; then cutting a bottom adhesive tape and a top adhesive tape; coating a bottom short adhesive tape; folding a top adhesive tape and coating a bottom long adhesive tape; and finally, pasting an insulating sheet. The problems that the overall size of the battery is influenced due to the fact that steps appear in an adhesive tape overlapping area during film coating, and bubbles, wrinkles, warping and the like are easily generated due to the fact that the adhesive tape overlapping area and other areas of the adhesive tape form the steps are effectively solved.

Description

technical field [0001] The invention relates to the technical field of power prismatic battery coatings, in particular to a process for reducing the area and thickness of overlapping areas of lithium battery coatings. Background technique [0002] Power battery The battery that provides power for transportation tools (electric vehicles and electric bicycles) is mainly composed of three parts, namely the battery module, the battery management system and the housing of the fixed frame. The outer surface of the battery is usually wrapped with a layer of protective film. On the one hand, the protective film can protect the battery, and on the other hand, it can make the appearance of the battery more beautiful. Power battery coating refers to coating the outer surface of the battery with an anti-corrosion insulating film. [0003] At present, the battery coating is mostly completed by automatic equipment and manual work. The traditional square shell lithium battery coating mach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/058
CPCH01M10/04H01M10/058Y02E60/10Y02P70/50
Inventor 张勇陈小梅舒伟
Owner 广东德尚智能装备有限公司
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