Flexible and controllable coating system and coating method

A coating and flexible technology, which is applied in the field of lithium-ion battery processing, can solve problems such as difficult and high-precision coating, and achieve the effects of improving precision and quality, reducing technology dependence, and easy operation

Active Publication Date: 2019-04-09
黄大庆 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the remaining coating methods, dip coating is the simplest, but its coating thickness is affected by the viscosity of the coating slurry and the coating speed, making it difficult to perform high-precision coating

Method used

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  • Flexible and controllable coating system and coating method
  • Flexible and controllable coating system and coating method
  • Flexible and controllable coating system and coating method

Examples

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Embodiment Construction

[0032] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0033] see figure 1 , which is a schematic structural diagram of the flexible and controllable coating system in this example. The system mainly includes a slurry bin 100, an extrusion bin 200, a controllable slit extruder 300 and a control center 400 (see figure 2 ) of these four parts.

[0034] The slurry bin 100 is used for storing the slurry to be coated.

[0035] The squeeze bin 200, the squeeze bin 200 is connected to the slurry bin 100 to obtain the slurry in the slurry bin 100, and realizes the temperature and pressure control of the slurry in the squeeze bin to adjust the pulp of different qualities, To achieve the requirements of coating on slurry viscosity and coating speed.

[0036] The controllable slit extruder 300, which is t...

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PUM

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Abstract

The invention discloses a flexible controllable coating system and a coating method. The system comprises a slurry cabin in which slurry is stored, an extrusion cabin which is communicated with the slurry cabin and is used for controlling temperature, viscosity and pressure of slurry delivered into the cabin according to the coating requirement, a controllable seal extruder which is arranged at the outlet of the extrusion cabin and is used for coating the slurry in the extrusion cabin onto a coating substrate and regulating the coating width, speed, flow rate and direction according to the coating requirement, and a control center which is used for respectively controlling the slurry cabin, the extrusion cabin and the controllable seal extruder. By combining with an electrical control technology, the system can be used for effectively controlling the temperature, viscosity, flow rate and pressure of a high-viscosity fluid, and a coating with relative high accuracy can be obtained by using a reasonably designed extrusion nozzle.

Description

technical field [0001] The invention relates to lithium ion battery processing technology, in particular to a coating process in lithium ion battery processing. Background technique [0002] There is a coating process for the three components in the lithium-ion battery: the positive electrode, the negative electrode, and the separator. It can be seen that how to choose a coating process suitable for the slurry is an important link in the production of lithium-ion batteries. [0003] In various automatic coating machines, in order to meet the precision requirements of the coating layer, it is first necessary to select a suitable coating method. The choice of coating method needs to be considered from the following aspects: the substrate to be coated, the speed of coating, the number of layers to be coated, the thickness of the wet coating, the rheological properties of the coating liquid, the required coating accuracy, etc. . [0004] How to choose a coating method suitabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C9/04B05C11/10B05C11/02
CPCB05C5/00B05C11/1013
Inventor 黄大庆苏建平
Owner 黄大庆
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