Control method of extrusion type intermittent coating system
A control method and extrusion technology, which is applied in the coating field, can solve problems such as unfavorable cell production, achieve uniform thickness and improve the yield rate
Inactive Publication Date: 2015-01-07
SHENZHEN HAONENG TECH
View PDF5 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to various reasons, the pressure in the extrusion head is difficult to control. If the pressure is too low, the extruded slurry will be less (thinner), and the front section of the coating formed in this way is a special-shaped coating, such as figure 2 As shown, these coatings 7 are all defective products, which is not conducive to the production of the following batteries
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.
[0019] The most critical idea of the present invention is: in the extrusion coating process step, when the extrusion head reaches the coating preset position of the coating target on the substrate, the coating valve is opened and the return valve is closed at the same time, so that the slurry is filled with the extrusion coating. When the extrusion head reaches the coating position on the substrate, the coating process is carried out. At this time, there is already an excessive amount of slurry in the extrusion head, which can prevent the lack of slurry in the front stage of the coating due to insufficient pressure of the extrusion head. problem with thinner coatings.
[0020] Please refer to image 3 , a control method of an extrusion-type gap coating system...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a control method of an extrusion type intermittent coating system. The control method comprises the following steps: S01. treatment before coating: opening a reflux valve and closing a coating valve before coating, so that the slurry flows in a conveying pipeline and a reflux pipeline; S02. coating pretreatment: judging whether an extrusion head reaches a preset position of a coating target on a substrate, if so, opening the coating valve and simultaneously closing the reflux valve so that the slurry is filled in the extrusion head, executing the step S03 after the extrusion head is filled with the slurry, or continuously executing the step S01; S03. extrusion coating treatment: carrying out coating treatment when the extrusion head reaches the initial coating position of the coating target on the substrate; S04: leaving a blank. Coatings obtained by adopting the method have the advantage of uniform thickness, and the yield of the whole product can be increased.
Description
technical field [0001] The invention relates to a coating technology, in particular to a control method of an extrusion gap coating system. Background technique [0002] Coating is an indispensable process in the production process of lithium-ion batteries, and it is also a key process that directly affects various performances such as battery safety, capacity, and consistency. Coating is to apply the prepared paste-like viscous slurry evenly, continuously or intermittently on the substrate to ensure the consistency of thickness at each coating position and control the coating thickness within the tolerance range required by the process . Different coating systems are set up for the method of coating, and extrusion gap coating system is one of them. [0003] The extrusion coating system in the prior art is composed of a slurry tank 1, a pump, a coating valve 2, a return valve 4, an extrusion head 3, a contact roller 5, and a substrate 6, see figure 1 . When coating, the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B05C5/02B05C11/10
Inventor 陈锐程建军苏建贵
Owner SHENZHEN HAONENG TECH