Micro-gravure coating amount control method for lithium battery production, storage medium and device
A control method and technology of coating amount, which can be used in devices for coating liquid on the surface, electrolyte battery manufacturing, electrode manufacturing, etc., and can solve problems such as decreased sealing performance of the material box, decreased coating amount, and slurry leakage.
Active Publication Date: 2020-10-23
ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
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Problems solved by technology
[0004] The above-mentioned prior art scheme has the following defects: the influence of the change of the speed ratio on the coating amount is non-linear, and the increase of the speed ratio may cause the coating amount to increase, but it may also cause a decrease.
As the coating time prolongs, the seal of the material box may be worn, resulting in a decrease in the sealing of the material box during the coating process, and a certain degree of slurry leakage, which will eventually lead to a change in the pressure in the material box and a decrease in the coating amount. There is still room for improvement
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[0076] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0077] refer to figure 1 , is a method for controlling the amount of dimpled coating based on a lithium battery disclosed in the present invention. The slurry tank is connected to the feed port of the material box through a pump, and the discharge port of the material box is connected to the slurry tank. Through the operation of the pump , so that the paint in the slurry tank flows into the material box through the pump, and the paint in the material box passes through the discharge port and then circulates into the slurry tank through the electric gate, so as to carry out the circulating flow.
[0078] Among them, the method of pressure detection at the discharge port is as follows:
[0079] Step S100, acquiring the current pressure detection information of the discharge port.
[0080] The pressure detection information detects the pressure of the paint th...
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The invention relates to a micro-gravure coating amount control method for lithium battery production, a storage medium and a device, relates to the technical field of lithium battery production, andsolves the problem that the coating amount is reduced and the coating is not uniform along with the prolonging of the coating time. In the coating process, a material box sealing piece is abraded to acertain extent, the sealing performance of a material box is reduced in the coating process, slurry leaks to a certain degree, and finally the pressure in the material box is reduced, and the coatingamount is reduced. According to the method, by detecting the pressure in the material box, the flow of a discharge port is correspondingly adjusted according to the change of the pressure, so that the coating uniformity is improved.
Description
technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a lithium battery-based dimple coating amount control method, storage medium, and device. Background technique [0002] Dimple coating is widely used as a precision coating method. In the lithium battery industry, dimple coating is applied to surface treatment of diaphragm, surface treatment of current collectors of positive and negative electrodes, surface treatment of positive and negative electrodes, etc. It is widely used in other industries such as optical membranes and permeable membranes. [0003] The control methods of the existing dimple coating for the coating amount include: the number of dimple rolls and the speed ratio. Among them, the adjustment of the mesh number of the micro-gravure roller to the coating amount is stepwise, and the change of the mesh number of the micro-gravure roller from 200 mesh to 150 mesh will often bring a relatively larg...
Claims
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Login to View More IPC IPC(8): B05C11/10H01M2/14H01M4/04H01M10/058
CPCB05C11/1013B05C11/1005B05C11/10B05C11/1042H01M4/04H01M10/058Y02P70/50
Inventor 徐忠伟夏旭东徐琢林久许晓雄
Owner ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD