Drying method for reducing coating cracks of water-based negative electrode

Abstract

The invention discloses a drying method for reducing water system negative electrode coating cracks. The drying method for reducing the water system negative electrode coating cracks comprises the steps that S1, coating area information and continuous drying air frequency information are obtained; s2, the starting air frequency is adjusted to the continuous drying air frequency; the water-based negative electrode is dried, and surface image information of the dried water-based negative electrode is collected; s3, acquiring water-based negative electrode surface image information, comparing, and judging whether cracks exist in the water-based negative electrode surface image information or not; s4, if the cracks exist, the starting wind frequency is adjusted to the first wind frequency, the dried water system negative electrode surface image information is collected again, the water system negative electrode surface image information is compared, and whether the cracks exist in the water system negative electrode surface image information or not is judged; s5, if the crack exists, the step S4 is repeated until the crack does not exist; and the coating area information and the corresponding starting wind frequency, the first duration and the continuous drying wind frequency information are recorded, so that the drying efficiency of the water-based negative electrode is improved.

Description

Technical Field

[0001] The invention relates to the technical field of negative electrode coating and drying, and in particular to a drying method for reducing cracks in water-based negative electrode coating. Background Art

[0002] In recent years, the use of aqueous negative electrodes has become more and more widespread. During the drying process of the aqueous negative electrode after coating, in the initial stage of coating the aqueous negative electrode, the humidity in the dryer is lower than that in continuous production, and the electrode is dried faster. When starting coating, the surface of the electrode is prone to cracks, which leads to poor appearance.

[0003] The present application provides a drying method for reducing cracks in aqueous negative electrode coating to solve the above-mentioned problem. Summary of the invention

[0004] The technical problem to be solved by the present invention is that in the initial stage of coating of water-based negative electrode, the humidity in the dryer is lower than that in continuous production, the electrode is dried faster, and the surface of the electrode is prone to cracks, which is a poor appearance. Therefore, a drying method for reducing cracks in coating of water-based negative electrode is provided. The drying method for reducing cracks in coating of water-based negative electrode comprises: Step S1. Obtaining the coating area information and continuous drying wind frequency information of the water-based negative electrode; Step S2. Start the dryer and adjust the wind frequency to the continuous drying wind frequency according to the continuous drying wind frequency information; dry the water-based negative electrode through the dryer, and collect the surface image information of the dried water-based negative electrode; Step S3. Obtaining the surface image information of the water system negative electrode, comparing the surface image information of the water system negative electrode with the historical water system negative electrode surface image information database, and determining whether there are cracks in the surface image information of the water system negative electrode; Step S4. If there are cracks, the starting wind frequency is adjusted to the first wind frequency, and the first wind frequency is changed to the continuous drying wind frequency after the first time period, and the wind frequency change process from the first wind frequency to the continuous drying wind frequency is a linear change, and the surface image information of the water system negative electrode after drying is collected again, and the surface image information of the water system negative electrode is compared with the historical water system negative electrode surface image information library to determine whether there are cracks in the surface image information of the water system negative electrode; Step S5. If cracks exist, repeat step S4 until no cracks exist in the surface image information of the water-based negative electrode; record the coating area information, as well as the starting wind frequency, first duration and continuous drying wind frequency information corresponding to the coating area information.

[0005] Furthermore, in step S4, the first wind frequency is less than the continuous drying wind frequency.

[0006] Furthermore, in step S5, the wind frequency is reduced according to a preset value in each cycle of the first wind frequency.

[0007] Furthermore, the historical water system negative electrode surface image information database is specifically established including: Acquire the surface image of the water system negative electrode, identify the surface image of the water system negative electrode, determine whether there are cracks on the surface of the water system negative electrode, if there are cracks, extract the crack image, and store the crack image as a reference image library of water system negative electrodes with cracks; if there are no cracks, store the surface image of the water system negative electrode as a reference image library of complete water system negative electrodes; The cracked water system negative electrode reference image library and the intact water system negative electrode reference image library are merged and stored as a historical water system negative electrode surface image library.

[0008] Furthermore, it also includes obtaining coating area information of a new water-based negative electrode, and repeating steps S1-S5 until all types of water-based negative electrodes are completed.

[0009] Further, in step S4, if there are no cracks, the continuous drying wind frequency is used as the starting wind frequency.

[0010] Further, in step S5, if there are no cracks, the first wind frequency set this time is used as the starting wind frequency corresponding to the negative electrode of the water system of this model, and after a first period of time, the first wind frequency is changed to a continuous drying wind frequency.

[0011] The implementation of the present invention has the following beneficial effects: 1. This application adjusts the starting wind frequency so that the drying wind frequency is lower at startup, thereby preventing cracks from occurring when the water-based negative electrode is first coated, improving the quality rate of the water-based negative electrode, and improving the efficiency and work efficiency of drying the water-based negative electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a flow chart of a first embodiment of the present invention; Figure 2 It is a flow chart of the second embodiment of the present invention. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0014] Please refer to the instruction manual Figure 1 This embodiment provides a drying method for reducing cracks in water-based negative electrode coating, and the drying method for reducing cracks in water-based negative electrode coating includes: Step S1. Obtaining the coating area information and continuous drying wind frequency information of the water-based negative electrode; Step S2. Start the dryer and adjust the wind frequency to the continuous drying wind frequency according to the continuous drying wind frequency information; dry the water-based negative electrode through the dryer, and collect the surface image information of the dried water-based negative electrode; Step S3. Obtaining the surface image information of the water system negative electrode, comparing the surface image information of the water system negative electrode with the historical water system negative electrode surface image information database, and determining whether there are cracks in the surface image information of the water system negative electrode; Step S4. If there are cracks, the starting wind frequency is adjusted to the first wind frequency, and the first wind frequency is changed to the continuous drying wind frequency after the first time period, and the wind frequency change process from the first wind frequency to the continuous drying wind frequency is a linear change, and the surface image information of the water system negative electrode after drying is collected again, and the surface image information of the water system negative electrode is compared with the historical water system negative electrode surface image information library to determine whether there are cracks in the surface image information of the water system negative electrode; Step S5. If cracks exist, repeat step S4 until no cracks exist in the surface image information of the water-based negative electrode; record the coating area information, as well as the starting wind frequency, first duration and continuous drying wind frequency information corresponding to the coating area information.

[0015] In step S4, the first wind frequency is less than the continuous drying wind frequency.

[0016] In step S5, the wind frequency is reduced according to a preset value in each cycle of the first wind frequency.

[0017] The establishment of the historical water system negative electrode surface image information database specifically includes: Acquire the surface image of the water system negative electrode, identify the surface image of the water system negative electrode, determine whether there are cracks on the surface of the water system negative electrode, if there are cracks, extract the crack image, and store the crack image as a reference image library of water system negative electrodes with cracks; if there are no cracks, store the surface image of the water system negative electrode as a reference image library of complete water system negative electrodes; The cracked water system negative electrode reference image library and the intact water system negative electrode reference image library are merged and stored as a historical water system negative electrode surface image library. Example

[0018] Please refer to the instruction manual Figure 1 This embodiment provides a drying method for reducing cracks in water-based negative electrode coating, and the drying method for reducing cracks in water-based negative electrode coating includes: Step S1. Obtaining the coating area information and continuous drying wind frequency information of the water-based negative electrode; Step S2. Start the dryer and adjust the wind frequency to the continuous drying wind frequency according to the continuous drying wind frequency information; dry the water-based negative electrode through the dryer, and collect the surface image information of the dried water-based negative electrode; Step S3. Obtaining the surface image information of the water system negative electrode, comparing the surface image information of the water system negative electrode with the historical water system negative electrode surface image information database, and determining whether there are cracks in the surface image information of the water system negative electrode; Step S4. If there are cracks, the starting wind frequency is adjusted to the first wind frequency, and the first wind frequency is changed to the continuous drying wind frequency after the first time period, and the wind frequency change process from the first wind frequency to the continuous drying wind frequency is a linear change, and the surface image information of the water system negative electrode after drying is collected again, and the surface image information of the water system negative electrode is compared with the historical water system negative electrode surface image information library to determine whether there are cracks in the surface image information of the water system negative electrode; Step S5. If cracks exist, repeat step S4 until no cracks exist in the surface image information of the water-based negative electrode; record the coating area information, as well as the starting wind frequency, first duration and continuous drying wind frequency information corresponding to the coating area information.

[0019] In step S4, the first wind frequency is less than the continuous drying wind frequency.

[0020] In step S5, the wind frequency is reduced according to a preset value in each cycle of the first wind frequency.

[0021] The establishment of the historical water system negative electrode surface image information database specifically includes: Acquire the surface image of the water system negative electrode, identify the surface image of the water system negative electrode, determine whether there are cracks on the surface of the water system negative electrode, if there are cracks, extract the crack image, and store the crack image as a reference image library of water system negative electrodes with cracks; if there are no cracks, store the surface image of the water system negative electrode as a reference image library of complete water system negative electrodes; The cracked water system negative electrode reference image library and the intact water system negative electrode reference image library are merged and stored as a historical water system negative electrode surface image library.

[0022] The method also includes step S6. Obtaining coating area information of a new water-based negative electrode, and repeating steps S1-S5 until all types of water-based negative electrodes are completed.

[0023] In step S4, if there are no cracks, the continuous drying wind frequency is used as the starting wind frequency.

[0024] In step S5, if there are no cracks, the first wind frequency set this time is used as the starting wind frequency corresponding to the negative electrode of the water system of this model, and after a first period of time, the first wind frequency is changed to a continuous drying wind frequency.

[0025] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drying method for reducing cracks in aqueous negative electrode coating, characterized in that: include: Step S1. Obtaining the coating area information and continuous drying wind frequency information of the water-based negative electrode; Step S2. Start the dryer and adjust the wind frequency to the continuous drying wind frequency according to the continuous drying wind frequency information; dry the water-based negative electrode through the dryer, and collect the surface image information of the dried water-based negative electrode; Step S3. Obtaining the surface image information of the water system negative electrode, comparing the surface image information of the water system negative electrode with the historical water system negative electrode surface image information database, and determining whether there are cracks in the surface image information of the water system negative electrode; Step S4. If there are cracks, the starting wind frequency is adjusted to the first wind frequency, and the first wind frequency is changed to the continuous drying wind frequency after the first time period, and the wind frequency change process from the first wind frequency to the continuous drying wind frequency is a linear change, and the surface image information of the water system negative electrode after drying is collected again, and the surface image information of the water system negative electrode is compared with the historical water system negative electrode surface image information library to determine whether there are cracks in the surface image information of the water system negative electrode; Step S5. If cracks exist, repeat step S4 until no cracks exist in the surface image information of the water-based negative electrode; record the coating area information, as well as the starting wind frequency, first duration and continuous drying wind frequency information corresponding to the coating area information.

2. The drying method for reducing coating cracks of water-based negative electrodes according to claim 1, characterized in that: In step S4, the first wind frequency is less than the continuous drying wind frequency.

3. The drying method for reducing coating cracks of water-based negative electrodes according to claim 1, characterized in that: In step S5, the first wind frequency is reduced according to a preset value in each cycle.

4. The drying method for reducing coating cracks of water-based negative electrodes according to claim 1, characterized in that: The specific establishment of the historical water system negative electrode surface image information database includes: Acquire the surface image of the water system negative electrode, identify the surface image of the water system negative electrode, determine whether there are cracks on the surface of the water system negative electrode, if there are cracks, extract the crack image, and store the crack image as a reference image library of water system negative electrodes with cracks; if there are no cracks, store the surface image of the water system negative electrode as a reference image library of complete water system negative electrodes; The cracked water system negative electrode reference image library and the intact water system negative electrode reference image library are merged and stored as a historical water system negative electrode surface image library.

5. The drying method for reducing coating cracks of water-based negative electrodes according to claim 1, characterized in that: The method also includes obtaining coating area information of a new water-based negative electrode, and repeating steps S1-S5 until all types of water-based negative electrodes are completed.

6. The drying method for reducing coating cracks of water-based negative electrodes according to claim 1, characterized in that: In step S4, if there are no cracks, the continuous drying wind frequency is used as the starting wind frequency.

7. The drying method for reducing coating cracks of water-based negative electrodes according to claim 1, characterized in that: In step S5, if there are no cracks, the first wind frequency set this time is used as the starting wind frequency corresponding to the negative electrode of the water system of this model, and after a first period of time, the first wind frequency is changed to a continuous drying wind frequency.

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