Wet coating surface density measurement method and measurement system, and electronic equipment
A density measurement and areal density technology, applied in measuring devices, specific gravity measurement, instruments, etc., can solve the problem of difficult to reflect the state, difficult to measure the stable value of wet coating surface density, difficult to measure the accurate value of wet coating surface density, etc. problems, to achieve the effect of improving the pass rate
Active Publication Date: 2022-01-21
CHANGZHOU DACHENG VACUUM TECH CO LTD +2
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[0002]
In the production of lithium batteries, in order to detect the coating quality, after coating, it is necessary to detect the surface density of the wet coating. The so-called "wet coating" refers to the coating whose water content exceeds the design value, and the corresponding water content reaches the design value. The coating is "dry coating"; but after coating, the wet coating on the current collector contains more water, the presence of water makes the surface density of the wet coating larger, and with the evaporation of water, the wet coating The areal density of the coating is also constantly changing; in the current situation, it is difficult to measure the accurate value of the areal density of the wet coating, and it is also difficult to measure the stable value of the areal density of the wet coating. The measured areal density value is even more difficult to reflect its drying. status
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[0042] Although the present application may readily take the form of embodiments, only some of them are shown in the drawings and will be described in detail in this specification, and it is to be understood that this specification should be considered as the It is an exemplary illustration of the principles of the application and is not intended to limit the application to what is described herein.
[0043] Therefore, a feature indicated in this specification will be used to describe one of the features of an embodiment of the application, rather than implying that every embodiment of the application must have the described feature. Furthermore, it should be noted that this specification describes a number of features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly described. Thus, the illustrated combinations are not intended to be limiting unless otherwise stated.
[004...
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The invention provides a wet coating surface density measuring method and system and electronic equipment, wherein the wet coating becomes a dry coating after being dried. The method comprises the following steps: acquiring the surface density and thickness of a dry coating sample corresponding to a dry coating, and calculating the volume density of the dry coating sample; and obtaining the thickness of the wet coating, and estimating the surface density of the dried wet coating by combining with the volume density of the dry coating sample. According to the method and the device, the surface density of the dry coating formed after the wet coating is dried is estimated.
Description
technical field [0001] The application relates to the field of film measurement, in particular to a method for measuring surface density of wet coatings, a measurement system, and electronic equipment. Background technique [0002] In the production of lithium batteries, in order to detect the coating quality, after coating, it is necessary to detect the areal density of the wet coating. The so-called "wet coating" refers to the coating whose water content exceeds the design value, and the corresponding water content reaches the design value. The coating is "dry coating"; but after coating, the wet coating on the current collector contains more water, the presence of water makes the surface density of the wet coating larger, and with the evaporation of water, the wet coating The areal density of the coating is also constantly changing; in the current situation, it is difficult to measure the accurate value of the areal density of the wet coating, and it is also difficult to ...
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IPC IPC(8): G01N9/00
CPCG01N9/00Y02E60/10
Inventor 张孝平丁德甲乔中涛姜志骐黄哲宇
Owner CHANGZHOU DACHENG VACUUM TECH CO LTD