Detection Method and Device for Agglomeration of Particles on Electrode Surface

Abstract

The present invention provides a method and device for detecting particle agglomeration on the surface of a pole piece. The method for detecting particle agglomeration on the surface of the pole piece includes: obtaining a pole piece to be detected and a test paper sheet, wherein the test paper sheet is provided with holes having a diameter size in the micron or nanometer level; controlling the surface to be detected on the pole piece to be detected to be attached to the test paper sheet, and the surface to be detected is the surface of the pole piece to be detected where the coating slurry is provided; obtaining the area of the region of the adhesion on the test paper sheet; judging whether the area of the region exceeds a preset area value, and when the area of the region is greater than or equal to the preset area value, judging that the detection result of the surface to be detected is particle agglomeration, otherwise, judging that the detection result of the surface to be detected is no particle agglomeration. Through the method for detecting particle agglomeration on the surface of the pole piece provided by the present application, it can be judged whether the specifications of the current coating slurry used or the coating process meets the production requirements, and adjustments can be made in a timely manner according to the detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and particularly relates to a method and device for detecting particle agglomeration on the surface of a pole piece. Background Art

[0002] Whether the slurry coating on the surface of the pole piece is uniform directly affects the performance of the positive and negative electrode materials, and thus determines the performance and quality of the finished battery. At present, the color of the surface of the pole piece after stirring and coating operations is basically dark. Therefore, for the phenomenon of particle agglomeration on the surface of the pole piece, it is impossible to effectively identify it through direct observation.

[0003] A Chinese patent with the publication number CN105170002B discloses a high-speed dispersion device, a slurry, a battery pole piece, and a lithium-ion battery. This patent solves the technical problem of "how to further improve the dispersion effect on the slurry while ensuring low cost and high efficiency during the dispersion process". However, for the phenomenon of particle agglomeration on the surface of the pole piece after coating, there is currently no direct detection method.

[0004] Therefore, the present invention provides a method and device for detecting particle agglomeration on the surface of a pole piece to detect whether there is particle agglomeration on the surface of the pole piece after coating and obtain accurate results. Summary of the Invention

[0005] The present invention provides a method and device for detecting particle agglomeration on the surface of a pole piece to detect whether there is particle agglomeration on the surface of the pole piece after coating and obtain accurate results.

[0006] In a first aspect, the present invention provides a method for detecting particle agglomeration on the surface of a pole piece, including: obtaining a pole piece to be detected and a test paper sheet, wherein the test paper sheet is provided with holes having a diameter size in the micron or nanometer level; controlling the surface to be detected on the pole piece to be detected to be attached to the test paper sheet, and the surface to be detected is the surface of the pole piece to be detected where the coating slurry is provided; obtaining the area of the adhered matter region on the test paper sheet; determining whether the area exceeds a preset area value, and when the area is greater than or equal to the preset area value, determining that the detection result of the surface to be detected is particle agglomeration, otherwise, determining that the detection result of the surface to be detected is no particle agglomeration.

[0007] The beneficial effects are as follows: Since the diameter of the particles used as the coating slurry for the pole piece is generally also in the micron or nanometer level, the test paper sheet proposed in this application facilitates the adsorption of particles on the surface of the pole piece and can obtain accurate detection results. Through the method for detecting particle agglomeration on the surface of the pole piece provided in this application, it is possible to determine whether the specifications of the current coating slurry or the coating process meet the production requirements and make adjustments in a timely manner according to the detection results.

[0008] Optionally, controlling the surface to be detected on the electrode to be detected to fit the test paper includes: fixing the opposite surface of the surface to be detected on the electrode to be detected on the surface of a metal block, the opposite surface being parallel to the horizontal plane, and under the action of the gravity of the metal block, the surface to be detected fits the test paper. The beneficial effect is that this design is simple and feasible, and the metal block can be reused, saving resources.

[0009] Optionally, when both the front and back surfaces of the electrode to be detected are the surfaces to be detected, fixing the opposite surface of the surface to be detected on the electrode to be detected on the surface of a metal block, the opposite surface being parallel to the horizontal plane, includes: obtaining the electrode to be detected, the electrode to be detected including a first electrode and a second electrode, the first electrode and the second electrode being electrodes of the same production batch; fixing the front surface of the first electrode on the surface of a first metal block, the back surface of the first electrode fitting the test paper, the front surface of the first electrode being parallel to the horizontal plane; fixing the back surface of the second electrode on the surface of a second metal block, the front surface of the second electrode fitting the test paper, the back surface of the second electrode being parallel to the horizontal plane. The beneficial effect is that this embodiment can simultaneously detect the coating effects of the front and back surfaces of electrodes of the same batch, improving the detection rate.

[0010] Optionally, controlling the surface to be detected on the electrode to be detected to fit the test paper includes: fixing the opposite surface of the test paper that fits the surface to be detected on the surface of a metal block, the opposite surface being parallel to the horizontal plane, and under the action of the gravity of the metal block, the test paper fits the surface to be detected. The beneficial effect is that the application adopts a relatively flexible design for the positional relationship among the test paper, the electrode to be detected, and the metal block.

[0011] Optionally, when both the front and back surfaces of the electrode to be detected are the surfaces to be detected, fixing the opposite surface of the test paper that fits the surface to be detected on the surface of a metal block, the surface of the metal block being parallel to the horizontal plane, includes: wrapping the front and back surfaces of the electrode to be detected with the test paper, and fixing the opposite surface of the test paper that wraps the electrode to be detected on the surface of a metal block, the surface of the metal block being parallel to the horizontal plane. The beneficial effect is that this embodiment is applicable to the case where the contact area between the test paper and the electrode to be detected is larger than the surface area of the electrode to be detected.

[0012] Optionally, when both the front and back sides of the to-be-detected electrode sheet are the to-be-detected surfaces, fixing the opposite side of the test paper sheet that adheres to the to-be-detected surface to the surface of the metal block, where the surface of the metal block is parallel to the horizontal plane, includes: obtaining the test paper sheet, where the test paper sheet includes a first test paper sheet and a second test paper sheet, and the metal block includes a first metal block and a second metal block; the first test paper sheet adheres to the front side of the to-be-detected electrode sheet, and the opposite side of the first test paper sheet that adheres to the to-be-detected electrode sheet is fixed to the surface of the first metal block, and the surface of the first metal block is parallel to the horizontal plane; the second test paper sheet adheres to the back side of the to-be-detected electrode sheet, and the opposite side of the second test paper sheet that adheres to the to-be-detected electrode sheet is fixed to the surface of the second metal block, and the surface of the second metal block is parallel to the horizontal plane.

[0013] Optionally, after fixing the opposite side of the to-be-detected surface on the to-be-detected electrode sheet to the surface of the metal block, it includes: applying a thrust to the metal block, and driving the to-be-detected electrode sheet to move relative to the test paper sheet through the displacement of the metal block to increase the friction between the to-be-detected electrode sheet and the test paper sheet. The beneficial effect is that: in some embodiments, the greater the friction between the to-be-detected electrode sheet and the test paper sheet, the more accurate the obtained detection result.

[0014] Optionally, obtaining the area of the adhered matter region on the test paper sheet includes: obtaining an image of the test paper sheet with the adhered matter, and inputting the image into an image fitting module, and the image fitting module fits the area of the adhered matter region.

[0015] Optionally, obtaining the area of the adhered matter region on the test paper sheet includes: obtaining the area of the adhered matter region on the test paper sheet through a film comparison card.

[0016] In a second aspect, the present invention provides a detection device for particle agglomeration on the surface of an electrode sheet, including: an acquisition module, a control module, an area acquisition module, and a judgment module; the acquisition module includes an electrode sheet acquisition unit and a paper sheet acquisition unit, the electrode sheet acquisition unit is used to acquire the to-be-detected electrode sheet, the paper sheet acquisition unit is used to acquire a test paper sheet, and the test paper sheet is provided with holes with a diameter size in the micron or nanometer range; the control module is used to control the to-be-detected surface on the to-be-detected electrode sheet to adhere to the test paper sheet, and the to-be-detected surface is the surface of the to-be-detected electrode sheet where the coating slurry is provided; the area acquisition module is used to acquire the area of the adhered matter region on the test paper sheet; the judgment module is used to judge whether the area exceeds a preset area value, and when the area is greater than or equal to the preset area value, judge that the detection result of the to-be-detected surface is particle agglomeration, otherwise, judge that the detection result of the to-be-detected surface is no particle agglomeration.

[0017] For the beneficial effects of the above second aspect, reference may be made to the description in the above first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a flowchart of an embodiment of a method for detecting particle agglomeration on the surface of a pole piece provided by the present invention;

[0019] Figure 2 FIG. is an exploded view of a structure in the detection process provided by the present invention;

[0020] Figure 3 FIG. is another exploded view of a structure in the detection process provided by the present invention;

[0021] Figure 4 FIG. is still another exploded view of a structure in the detection process provided by the present invention;

[0022] Figure 5 FIG. is yet another exploded view of a structure in the detection process provided by the present invention;

[0023] Figure 6 FIG. is a schematic diagram of an embodiment of a device for detecting particle agglomeration on the surface of a pole piece provided by the present invention;

[0024] Figure 7 FIG. is a schematic diagram of an electronic device provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following describes the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Among them, in the description of the embodiments of the present application, the terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of the present application, the singular forms "a", "the", "above", "the" and "this" are also intended to include, for example, the expression form of "one or more", unless there is a clear indication to the contrary in the context. It should also be understood that in the following embodiments of the present application, "at least one" and "one or more" mean one or more than two (including two). The term "and / or" is used to describe the association relationship of associated objects and indicates that three relationships can exist; for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0026] References to "one embodiment" or "some embodiments" or the like described in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized. The term "connection" includes direct connection and indirect connection, unless otherwise stated. "First", "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0027] In the embodiments of the present application, words such as "exemplarily" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0028] The present invention provides a method for detecting particle agglomeration on the surface of a pole piece, and its process is as Figure 1 shown, including:

[0029] S101: Obtain a pole piece to be detected and a test paper sheet, and pores with a diameter size in the micron or nanometer range are provided on the test paper sheet;

[0030] S102: Control the surface to be detected on the pole piece to be detected to be attached to the test paper sheet, and the surface to be detected is the surface of the pole piece to be detected where the coating slurry is provided;

[0031] S103: Obtain the area of the adhered matter region on the test paper sheet;

[0032] S104: Determine whether the area of the region exceeds a preset area value, and when the area of the region is greater than or equal to the preset area value, execute step S105, otherwise execute S106;

[0033] S105: Determine that the detection result of the surface to be detected is particle agglomeration;

[0034] S106: Determine that the detection result of the surface to be detected is no particle agglomeration.

[0035] In the above embodiments, the color of the test paper sheet is light color, but it is not limited to only one color. For example, the color of the test paper sheet includes at least one of white, transparent, light blue, pink, and cyan. The distribution of the particles on the light - colored test paper sheet is convenient for observation. The present application does not limit the actual value of the preset area value, but defines the preset area value as the largest area at the particle aggregation on the surface of the electrode sheet in the stable state of the electrode sheet performance by combining the different fineness after stirring the powder used for coating and the rules therein. Since the diameter of the particles used as the electrode coating slurry is generally also in the micron or nanometer level, the test paper sheet proposed by the present application is convenient for the adsorption of the particles on the electrode surface and can obtain accurate detection results. Through the detection method for particle agglomeration on the surface of the electrode sheet provided by the present application, it can be judged whether the specifications of the current coating slurry or the coating process meet the production requirements, and adjustments can be made in a timely manner according to the detection results.

[0036] In some embodiments, controlling the to - be - detected surface of the to - be - detected electrode sheet to fit the test paper sheet includes: Figure 2 As shown in the figure, fixing the opposite surface of the to - be - detected surface on the to - be - detected electrode sheet 202 on the surface of the metal block 201, the opposite surface is parallel to the horizontal plane, and under the action of the gravity of the metal block 201, the to - be - detected surface fits the test paper sheet 203. This design is simple and feasible, and the metal block can be reused, saving resources.

[0037] In some embodiments, when both the front and back surfaces of the to - be - detected electrode sheet are the to - be - detected surfaces, fixing the opposite surface of the to - be - detected surface on the to - be - detected electrode sheet on the surface of the metal block, the opposite surface is parallel to the horizontal plane. As Figure 3 shown in the figure, it includes: obtaining a to - be - detected electrode sheet, the to - be - detected electrode sheet includes a first electrode sheet 302 and a second electrode sheet 304, the first electrode sheet 302 and the second electrode sheet 304 are electrode sheets of the same production batch; the front surface of the first electrode sheet 302 is fixed on the surface of the first metal block 301, the back surface of the first electrode sheet 302 fits the test paper sheet 303, and the front surface of the first electrode sheet 302 is parallel to the horizontal plane; the back surface of the second electrode sheet 304 is fixed on the surface of the second metal block 305, the front surface of the second electrode sheet 304 fits the test paper sheet 303, and the back surface of the second electrode sheet 304 is parallel to the horizontal plane. This embodiment can simultaneously detect the coating effects of the front and back surfaces of the electrode sheets of the same batch, improving the detection rate.

[0038] In some embodiments, controlling the test paper to be attached to the surface to be detected on the electrode to be detected includes: fixing the opposite surface of the test paper that is attached to the surface to be detected on the surface of a metal block, where the opposite surface is parallel to the horizontal plane, and under the action of the gravity of the metal block, the test paper is attached to the surface to be detected. The present application has a relatively flexible design for the positional relationship among the test paper, the electrode to be detected, and the metal block.

[0039] In some embodiments, when both the front and back surfaces of the electrode to be detected are the surfaces to be detected, fixing the opposite surface of the test paper that is attached to the surface to be detected on the surface of a metal block, where the surface of the metal block is parallel to the horizontal plane, as Figure 4 shown, includes: the test paper 402 wraps the front and back surfaces of the electrode to be detected 401, and fixes the opposite surface of the test paper 402 that wraps the electrode to be detected 401 on the surface of a metal block (not shown in the figure), where the surface of the metal block is parallel to the horizontal plane. This embodiment is applicable to the case where the contact area between the test paper and the electrode to be detected is larger than the surface area of the electrode to be detected.

[0040] In some embodiments, when both the front and back surfaces of the electrode to be detected are the surfaces to be detected, fixing the opposite surface of the test paper that is attached to the surface to be detected on the surface of a metal block, where the surface of the metal block is parallel to the horizontal plane, as Figure 5 shown, includes: obtaining the test paper, where the test paper includes a first test paper 502 and a second test paper 504; the first test paper 502 is attached to the front surface of the electrode to be detected 503, and the opposite surface of the first test paper 502 that is attached to the electrode to be detected 503 is fixed on the surface of a first metal block 501, where the surface of the first metal block 501 is parallel to the horizontal plane; the second test paper 504 is attached to the back surface of the electrode to be detected 503, and the opposite surface of the second test paper 504 that is attached to the electrode to be detected 503 is fixed on the surface of a second metal block 505, where the surface of the second metal block 505 is parallel to the horizontal plane.

[0041] In some embodiments, after fixing the opposite surface of the surface to be detected on the electrode to be detected on the surface of a metal block, it includes: applying a thrust to the metal block, and driving the electrode to be detected to move relative to the test paper through the displacement of the metal block, so as to increase the friction between the electrode to be detected and the test paper. In certain embodiments, the greater the friction between the electrode to be detected and the test paper, the more accurate the obtained detection result.

[0042] In some embodiments, obtaining the area of the adhered matter on the test paper sheet includes: obtaining an image of the test paper sheet with the adhered matter thereon, and inputting the image into an image fitting module, where the image fitting module fits the area of the adhered matter. The process of the image fitting module fitting the area of the adhered matter includes: obtaining multiple reference images including the test paper sheet with the adhered matter thereon; for each of the multiple reference images, processing each reference image by using a pre-trained neural network to obtain the feature information of the area where the adhered matter is distributed in each reference image, and obtaining a trained neural network model; then inputting the image of the test paper sheet with the adhered matter thereon into the image fitting module, and the image fitting module fits the area of the adhered matter.

[0043] In some embodiments, obtaining the area of the adhered matter on the test paper sheet includes: obtaining the area of the adhered matter on the test paper sheet by using a film comparison card. In this embodiment, the adhered matter on the test paper sheet is compared with the film comparison card to obtain the length and width of the appropriate adhered matter, and then the area of the adhered matter is calculated.

[0044] Based on the method for detecting particle agglomeration on the surface of the pole piece provided in the above embodiments, the present invention provides a device for detecting particle agglomeration on the surface of the pole piece, and its structure is as Figure 6 shown, including: an acquisition module 601, a control module 602, an area acquisition module 603, and a judgment module 604; the acquisition module 601 includes a pole piece acquisition unit 6011 and a paper sheet acquisition unit 6012, the pole piece acquisition unit 6011 is used to acquire a pole piece to be detected, the paper sheet acquisition unit 6012 is used to acquire a test paper sheet, and the test paper sheet is provided with holes with a diameter size of micrometers or nanometers; the control module 602 is used to control the surface to be detected on the pole piece to be detected to be attached to the test paper sheet, and the surface to be detected is the surface of the pole piece to be detected where the coating slurry is provided; the area acquisition module 603 is used to obtain the area of the adhered matter on the test paper sheet; the judgment module 604 is used to judge whether the area exceeds a preset area value, and when the area is greater than or equal to the preset area value, judge that the detection result of the surface to be detected is particle agglomeration, otherwise, judge that the detection result of the surface to be detected is no particle agglomeration.

[0045] All relevant contents of each step involved in the above method embodiments can be cited in the function descriptions of the corresponding unit modules, and will not be repeated here.

[0046] In this application, the surfaces of the metal block, the first metal block, and the second metal block all refer to a certain side of the corresponding metal block. In some embodiments, the metal block, the first metal block, and the second metal block are cubes or cuboids. In this application, the determination of the front and back sides of the to-be-detected electrode sheet follows the partitioning rules of those skilled in the art.

[0047] This application also provides a chip, which includes the detecting device for particle agglomeration on the electrode sheet surface provided in the above embodiments, and the chip can implement the method for detecting particle agglomeration on the electrode sheet surface described in any one of the above embodiments. In a specific embodiment, the detecting device for particle agglomeration on the electrode sheet surface can correspond to a chip in a mobile terminal, such as a SoC (System-On-a-Chip), a baseband chip, a chip module, etc.

[0048] In some other embodiments of this application, the embodiments of this application disclose an electronic device, which can refer to the detecting device for particle agglomeration on the electrode sheet surface provided in the above embodiments, such as Figure 7 As shown, the electronic device may include: one or more processors 701; a memory 702; a display 703; one or more applications (not shown); and one or more computer programs 704. The above components can be connected through one or more communication buses 705. Among them, the one or more computer programs 704 are stored in the above memory 702 and are configured to be executed by the one or more processors 701. The one or more computer programs 704 include instructions, and the above instructions can be used to execute each step in the corresponding embodiments as described above.

[0049] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of description, only the above division of each functional module is used as an example. In practical applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated here.

[0050] In each embodiment of this application, each functional unit can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0051] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method in each embodiment of the present application. The foregoing storage medium includes: various media that can store program codes, such as flash memory, mobile hard disk, read-only memory, random access memory, magnetic disk, or optical disk.

[0052] As described above, the foregoing is only the specific implementation manner of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered by the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims described.

Claims

1. A method for detecting particle agglomeration on the surface of an electrode sheet, characterized in that, it includes: Obtain the electrode sheet to be detected and a test paper sheet, and pores with a diameter size of micrometers or nanometers are provided on the test paper sheet; Control the surface to be detected on the electrode sheet to be detected to be attached to the test paper sheet, and the surface to be detected is the surface of the electrode sheet to be detected where the coating slurry is provided; Obtain the area of the region of the adhesion on the test paper sheet; The obtaining the area of the region of the adhesion on the test paper sheet includes: Obtain multiple reference images of the test paper sheet including the adhesion; For each of the multiple reference images, use a pre-trained neural network to process each reference image to obtain the characteristic information of the area of the region where the adhesion is distributed in each reference image, and obtain a trained neural network model; Input the image of the test paper sheet with the adhesion into an image fitting module, and the image fitting module fits the area of the region of the adhesion; Judge whether the area exceeds a preset area value, and when the area is greater than or equal to the preset area value, judge that the detection result of the surface to be detected is particle agglomeration, otherwise, judge that the detection result of the surface to be detected is no particle agglomeration; The controlling the surface to be detected on the electrode sheet to be detected to be attached to the test paper sheet includes: Fix the opposite side of the surface to be detected on the electrode sheet to be detected on the surface of a metal block, the opposite side is parallel to the horizontal plane, and under the action of the gravity of the metal block, the surface to be detected is attached to the test paper sheet; When both the front and back sides of the electrode sheet to be detected are the surfaces to be detected, the fixing the opposite side of the surface to be detected on the electrode sheet to be detected on the surface of a metal block, the opposite side is parallel to the horizontal plane, includes: Obtain the electrode sheet to be detected, the electrode sheet to be detected includes a first electrode sheet and a second electrode sheet, and the first electrode sheet and the second electrode sheet are electrode sheets of the same production batch; The front side of the first electrode sheet is fixed on the surface of a first metal block, the back side of the first electrode sheet is attached to the test paper sheet, and the front side of the first electrode sheet is parallel to the horizontal plane; The back side of the second electrode sheet is fixed on the surface of a second metal block, the front side of the second electrode sheet is attached to the test paper sheet, and the back side of the second electrode sheet is parallel to the horizontal plane.

2. The method for detecting particle agglomeration on the surface of an electrode sheet according to claim 1, characterized in that, The controlling the surface to be detected on the electrode sheet to be detected to be attached to the test paper sheet includes: Fix the opposite side of the test paper sheet attached to the surface to be detected on the surface of a metal block, the opposite side is parallel to the horizontal plane, and under the action of the gravity of the metal block, the test paper sheet is attached to the surface to be detected.

3. The method for detecting particle agglomeration on the surface of an electrode sheet according to claim 2, characterized in that, When both the front and back sides of the electrode sheet to be detected are the surfaces to be detected, the fixing the opposite side of the test paper sheet attached to the surface to be detected on the surface of a metal block, the surface of the metal block is parallel to the horizontal plane, includes: The test paper wraps the front and back sides of the to-be-detected pole piece, and the opposite side of the test paper that wraps the to-be-detected pole piece is fixed on the surface of a metal block, and the surface of the metal block is parallel to the horizontal plane.

4. The method for detecting particle agglomeration on the surface of a pole piece according to claim 2, characterized in that when both the front and back sides of the to-be-detected pole piece are the to-be-detected surfaces, fixing the opposite side of the test paper that fits the to-be-detected surface on the surface of a metal block, and the surface of the metal block is parallel to the horizontal plane, includes: obtaining the test paper, the test paper includes a first test paper and a second test paper, and the metal block includes a first metal block and a second metal block; the first test paper fits the front side of the to-be-detected pole piece, and the opposite side of the first test paper that fits the to-be-detected pole piece is fixed on the surface of the first metal block, and the surface of the first metal block is parallel to the horizontal plane; the second test paper fits the back side of the to-be-detected pole piece, and the opposite side of the second test paper that fits the to-be-detected pole piece is fixed on the surface of the second metal block, and the surface of the second metal block is parallel to the horizontal plane.

5. The method for detecting particle agglomeration on the surface of a pole piece according to claim 1, characterized in that after fixing the opposite side of the to-be-detected surface on the to-be-detected pole piece on the surface of a metal block, includes: applying a thrust to the metal block, driving the to-be-detected pole piece to move relative to the test paper through the displacement of the metal block, so as to increase the friction force between the to-be-detected pole piece and the test paper.

6. A device for detecting particle agglomeration on the surface of a pole piece, characterized in that it includes: an acquisition module, a control module, an area acquisition module and a judgment module; the acquisition module includes a pole piece acquisition unit and a paper acquisition unit, the pole piece acquisition unit is used to acquire a to-be-detected pole piece, and the paper acquisition unit is used to acquire a test paper, and holes with a diameter size of micrometers or nanometers are arranged on the test paper; the control module is used to control the to-be-detected surface on the to-be-detected pole piece to fit the test paper, and the to-be-detected surface is the surface of the to-be-detected pole piece where the coating slurry is provided; specifically, the control module fixes the opposite side of the to-be-detected surface on the to-be-detected pole piece on the surface of a metal block, the opposite side is parallel to the horizontal plane, and under the action of the gravity of the metal block, the to-be-detected surface fits the test paper; wherein, when both the front and back sides of the to-be-detected pole piece are the to-be-detected surfaces, the pole piece acquisition unit acquires the to-be-detected pole piece, the to-be-detected pole piece includes a first pole piece and a second pole piece, and the first pole piece and the second pole piece are pole pieces of the same production batch; the front side of the first pole piece is fixed on the surface of the first metal block, the back side of the first pole piece fits the test paper, and the front side of the first pole piece is parallel to the horizontal plane; the back side of the second pole piece is fixed on the surface of the second metal block, the front side of the second pole piece fits the test paper, and the back side of the second pole piece is parallel to the horizontal plane The area acquisition module is used to acquire the area of the region of the adherent on the test paper sheet; specifically, the area acquisition module acquires multiple reference images of the test paper sheet with the adherent attached thereto; and for each of the multiple reference images, processes each reference image by using a pre-trained neural network to obtain the feature information of the area of the region where the adherent is distributed in each reference image, and obtains a trained neural network model; inputs the image of the test paper sheet with the adherent attached thereto into the image fitting module, and the image fitting module fits the area of the region of the adherent. The judgment module is used to judge whether the area of the region exceeds a preset area value, and when the area of the region is greater than or equal to the preset area value, judge that the detection result of the surface to be detected is particle agglomeration, otherwise, judge that the detection result of the surface to be detected is no particle agglomeration.

Images