Pole piece detection mechanism verification system and method

Abstract

The invention discloses a pole piece detection mechanism verification system and method.The pole piece detection mechanism verification system comprises an unwinding drum, at least one pole piece detection mechanism and at least one winding drum, the unwinding drum is used for being sleeved with at least one defect pole roll, and the defect pole roll comprises a defect pole piece strip; the at least one winding drum is used for winding at least one defective pole roll; and the processor is used for obtaining a pole piece detection result through the pole piece detection mechanism, obtaining actual defect information, comparing the pole piece detection result with the actual defect information, and determining the accuracy of the pole piece detection mechanism. In the embodiment of the invention, after the single-time verification of the pole piece detection mechanism is completed, the defective pole roll is wound on the winding drum, and the defective pole roll can be directly taken from the winding drum during the next use, so that the recycling of the defective pole roll is realized, and compared with the mode that the defective pole roll needs to be manufactured before each shift, the cost is saved, and the working time is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic, in particular to a pole piece detection mechanism verification system and method. BACKGROUND

[0002] The electric core in the lithium battery is usually wound by the first pole piece, the second pole piece and the diaphragm. Each pole piece has the pole lug formed by the die cutting.

[0003] After the pole piece is prepared, some pole pieces may have defects. At present, the CCD (Charge Coupled Device) detection mechanism is usually used to check whether the pole piece has defects, and if the pole piece has defects, the pole piece needs to be rejected.

[0004] If the pole piece with defects is not accurately identified, the pole piece with defects will be prepared into the electric core, resulting in that the electric core is unqualified. Therefore, the accuracy of the pole piece detection mechanism will affect the quality of the electric core, and how to realize the verification of the pole piece detection mechanism is an urgent problem to be solved at present. SUMMARY

[0005] The present application provides a pole piece detection mechanism verification system and method, which aims to solve how to realize the verification of the pole piece detection mechanism.

[0006] In a first aspect, the present application embodiment provides a pole piece detection mechanism verification system, comprising a unwinding drum, at least one pole piece detection mechanism and at least one winding drum, the unwinding drum is used for sleeving at least one defective pole roll, the defective pole roll comprises a defective pole strip, the defective pole strip has at least one defect, and at least one winding drum is used for winding at least one defective pole roll respectively.

[0007] Further comprising a processor, the processor is used for acquiring a pole piece detection result through the pole piece detection mechanism, acquiring actual defect information, comparing the pole piece detection result with the actual defect information, and determining the accuracy of the pole piece detection mechanism, wherein the actual defect information refers to the information of the defect on the defective pole strip.

[0008] Optionally, the defective pole strip comprises a plurality of pole pieces, the pole piece comprises a plurality of pole lugs, at least one defective pole roll comprises a first defective pole roll and a second defective pole roll, when the first defective pole roll and the second defective pole roll are sleeved on the unwinding drum, the direction of the pole lug in the first defective pole roll is opposite to the direction of the pole lug in the second defective pole roll.

[0009] At least one of the take-up drums includes a first take-up drum and a second take-up drum, the first take-up drum and the second take-up drum being used to take up the first defective electrode roll and the second defective electrode roll, respectively, and the first take-up drum and the second take-up drum are distributed at intervals along the height direction of the electrode inspection mechanism verification system.

[0010] Optionally, the defective electrode roll further includes a protective film that covers at least the front and back sides of the defective electrode strip.

[0011] Optionally, the electrode inspection mechanism includes a CCD camera and a detector connected to the CCD camera. The CCD camera is used to periodically take pictures of the defective electrode strip after unwinding to obtain multiple electrode segment images. The detector is used to determine the electrode inspection result based on the multiple electrode segment images.

[0012] Optionally, the defective electrode strip has at least one defect on its front and / or back sides; at least one electrode detection mechanism includes a front electrode detection mechanism and / or a back electrode detection mechanism, wherein the front electrode detection mechanism is used to detect defects on the front side of the defective electrode strip, and the back electrode detection mechanism is used to detect defects on the back side of the defective electrode strip.

[0013] Optionally, the electrode inspection mechanism verification system further includes at least one marking machine, which is electrically connected to the reverse electrode inspection mechanism through the processor, and is used to mark defects on the defective electrode strip.

[0014] Optionally, the electrode inspection mechanism verification system further includes multiple conveying rollers for conveying defective electrode strips after unwinding, and the multiple conveying rollers are located between the unwinding drum and the rewinding drum.

[0015] Secondly, embodiments of the present invention provide a method for verifying electrode testing mechanisms, applied to the electrode testing mechanism verification system described in any of the above claims, the electrode testing mechanism verification method comprising:

[0016] Obtain electrode testing results from electrode testing institutions;

[0017] Obtain actual defect information, wherein the actual defect information refers to the defect information on the defective electrode strip;

[0018] The accuracy of the electrode detection mechanism is determined by comparing the electrode detection results with the actual defect information.

[0019] Optionally, the electrode detection result includes the defect detection type and the number of defects detected, and the actual defect information includes the actual defect type and the actual defect number;

[0020] The step of comparing the electrode inspection results with the actual defect information to determine the accuracy of the electrode inspection mechanism includes:

[0021] The defect detection type is compared with the actual defect type to determine the type accuracy, wherein the type accuracy is the ratio of the number of defect detection types that match the actual defect type to the total number of actual defect types;

[0022] The accuracy of the number of defects is determined by comparing the number of defects detected with the actual number of defects, wherein the accuracy of the number of defects is the ratio of the number of defects detected to the actual number of defects.

[0023] Optionally, the defective electrode strip has at least one defect on its front and / or back sides; at least one electrode detection mechanism includes a front electrode detection mechanism and / or a back electrode detection mechanism, wherein the front electrode detection mechanism is used to detect defects on the front side of the defective electrode strip, and the back electrode detection mechanism is used to detect defects on the back side of the defective electrode strip; the electrode detection result includes the front electrode detection result and / or the back electrode detection result, and the actual defect information includes actual defect information on the front side and / or actual defect information on the back side;

[0024] The process of obtaining electrode testing results through an electrode testing mechanism includes:

[0025] Obtain the front electrode test results and / or back electrode test results through the front electrode test institution and / or the back electrode test institution;

[0026] The acquisition of actual defect information includes:

[0027] Obtain actual defect information from the front and / or the back;

[0028] The step of comparing the electrode inspection results with the actual defect information to determine the accuracy of the electrode inspection mechanism includes:

[0029] The accuracy of the front electrode detection mechanism is determined by comparing the front electrode detection results with the actual front defect information, and / or the accuracy of the back electrode detection mechanism is determined by comparing the back electrode detection results with the actual back defect information.

[0030] In this embodiment of the invention, the electrode inspection results are first obtained through an electrode inspection mechanism, then the actual defect information is obtained, and finally the electrode inspection results are compared with the actual defect information to determine the accuracy of the electrode inspection mechanism, thereby achieving the verification of the electrode inspection mechanism. Furthermore, after a single verification of the electrode inspection mechanism, the defective electrode roll is wound onto a take-up drum. For the next use, the defective electrode roll can be directly taken from the take-up drum, realizing the recycling of the defective electrode roll. Compared to producing defective electrode rolls before each shift, this saves costs and shortens working hours. Additionally, after a single verification of the electrode inspection mechanism, the defective electrode roll is wound onto the take-up drum, avoiding the scrapping of the defective electrode roll compared to directly removing the defective portion.

[0031] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the electrode testing mechanism verification system provided in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the unwinding drum and the defective pole roll provided in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of the defective electrode strip provided in an embodiment of the present invention;

[0035] Figure 4 A flowchart illustrating the steps of the electrode testing mechanism verification method provided in this embodiment of the invention;

[0036] Figure label:

[0037] 1-Unwinding drum, 2-Electrode sheet inspection mechanism, 21-Front-side electrode sheet inspection mechanism, 22-Back-side electrode sheet inspection mechanism, 3-Take-up drum, 31-First take-up drum, 32-Second take-up drum, 4-Defective electrode roll, 41-Defective electrode strip, 411-Electrode sheet, 4111-Electrode lug, 42-First defective electrode roll, 43-Second defective electrode roll, 5-Marking machine, 6-Conveyor roller, 7-First conveyor mechanism, 8-Second conveyor mechanism, 9-Third conveyor mechanism, 10-Measuring mechanism. Detailed Implementation

[0038] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0039] Firstly, referring to Figures 1 to 3 This invention discloses an electrode detection mechanism verification system, including an unwinding drum 1, at least one electrode detection mechanism 2, and at least one winding drum 3. The unwinding drum 1 is used to mount at least one defective electrode roll 4, the defective electrode roll 4 including a defective electrode strip 41, the defective electrode strip 41 having at least one defect. The at least one winding drum 3 is used to wind up at least one defective electrode roll 4. The system also includes a processor, which is used to obtain electrode detection results through the electrode detection mechanism 2, obtain actual defect information, compare the electrode detection results with the actual defect information, and determine the accuracy of the electrode detection mechanism 2. The actual defect information refers to the information on the defects on the defective electrode strip 41.

[0040] Specifically, the defective electrode roll 4 has a circular cross-sectional shape. The defective electrode roll 4 also includes a protective film, which is applied to the surface of the defective electrode strip 41. The defective electrode roll 4 is formed by winding the defective electrode strip 41 with the protective film applied. The protective film can be applied to the surface of the defective electrode strip 41 using a thermoforming machine. The protective film covers at least both the front and back sides of the defective electrode strip 41. The protective film serves to protect the defective electrode strip 41 to prevent damage during use.

[0041] The manufacturing process of the defective electrode roll 4 can be as follows: manufacturing the defective electrode strip 41; providing a protective film; setting the protective film on the surface of the defective electrode strip 41; and winding the defective electrode strip 41 with the protective film to form the defective electrode roll 4. The manufacturing process of the defective electrode strip 41 can be as follows: providing a normal electrode strip; and creating at least one defect on the front and / or back of the normal electrode strip to obtain the defective electrode strip 41. A normal electrode strip is also an electrode strip without defects after the die-cutting process. When creating defects on a normal electrode strip, the area, shape, and color of the defects can be set according to actual requirements.

[0042] The manufactured defective electrode strip 41 has at least one defect, including membrane area damage, straight edge damage, bubble defects, metal leakage defects, adhesive tape defects, pinhole defects, straight edge excess material defects, and tab folding defects. For membrane area damage defects, please refer to... Figure 3 The defect shown in B1, the straight edge breakage defect, can be referred to Figure 3 The defect shown in B2, the bubble defect can be referred to Figure 3 The defect shown in B3, the metal leakage defect can be referred toFigure 3 The defect shown in B4, the tape application defect, can be referred to Figure 3 The defect shown in B5, pinhole defects can be referred to... Figure 3 The defect shown in B6, and the straight edge scrap defect, can be referred to... Figure 3 The defect shown in B7, the tab folding defect, can be referred to... Figure 3 The defect shown in B8.

[0043] Before the verification begins, the defective electrode roll 4 is placed around the outer periphery of the unwinding drum 1. The electrode inspection mechanism verification system also includes multiple conveying rollers 6. At the start of the verification, the unwound defective electrode strip 41 is conveyed to the take-up drum 3 via the multiple conveying rollers 6. After the verification is completed, the defective electrode roll 4 is wound up on the take-up drum 3. For the next verification, the defective electrode roll 4 is removed from the take-up drum 3 and re-placed on the unwinding drum 1.

[0044] The electrode inspection mechanism 2 is used to inspect defects on the unwound defective electrode strip 41 to obtain the electrode inspection result. The processor is electrically connected to the electrode inspection mechanism 2. After obtaining the electrode inspection result, the electrode inspection mechanism 2 sends the result to the processor. This electrode inspection mechanism verification system also includes a memory, which is communicatively connected to the processor. Actual defect information is pre-stored in the memory. The electrode inspection result is compared with the actual defect information to determine the consistency between the two; this consistency is used as the accuracy of the electrode inspection mechanism.

[0045] The electrode inspection results can include the defect detection type and the number of defects detected. Actual defect information includes the actual defect type and the actual number of defects. The processor also compares the defect detection types with the actual defect types to determine type accuracy, and determines number accuracy based on the number of defect detections compared to the actual number of defects. Specifically, type accuracy is the ratio of the number of defect detection types that match the actual defect type to the total number of actual defect types, and number accuracy is the ratio of the number of defect detections to the actual number of defects.

[0046] In this embodiment of the invention, the electrode inspection results are first obtained through the electrode inspection mechanism, then the actual defect information is obtained, and finally the electrode inspection results are compared with the actual defect information to determine the accuracy of the electrode inspection mechanism, thereby achieving the verification of the electrode inspection mechanism. Furthermore, after a single verification of the electrode inspection mechanism, the defective electrode roll 4 is wound onto the winding drum 3. For the next use, the defective electrode roll 4 can be directly taken from the winding drum 3, realizing the recycling of the defective electrode roll 4. Compared to making defective electrode rolls 4 before each shift, this saves costs and shortens working hours. Additionally, after a single verification of the electrode inspection mechanism, the defective electrode roll 4 is wound onto the winding drum 3, avoiding the scrapping of the defective electrode roll 4 compared to directly removing the defective portion.

[0047] The defective electrode strip 41 includes multiple electrode strips 411, and each electrode strip 411 includes multiple electrode tabs 4111. At least one defective electrode roll 4 includes a first defective electrode roll 42 and a second defective electrode roll 43. When the first defective electrode roll 42 and the second defective electrode roll 43 are mounted on the unwinding drum 1, the orientation of the electrode tabs 4111 in the first defective electrode roll 42 is opposite to the orientation of the electrode tabs 4111 in the second defective electrode roll 43. At least one winding drum 3 includes a first winding drum 31 and a second winding drum 32. The first winding drum 31 and the second winding drum 32 are used to wind up the first defective electrode roll 42 and the second defective electrode roll 43, respectively. The first winding drum 31 and the second winding drum 32 are distributed at intervals along the height direction of the electrode detection mechanism verification system.

[0048] Specifically, refer to Figure 3 The defective electrode strip 41 includes at least two electrodes 411. Each electrode 411 includes multiple tabs 4111, that is, the electrode 411 is a long electrode, which has advantages such as high uniformity and high energy density.

[0049] Reference Figure 2 When the first defective electrode roll 42 and the second defective electrode roll 43 are mounted on the unwinding drum 1, they are arranged along the axial direction of the unwinding drum 1. The electrode lug 4111 of the first defective electrode roll 42 faces to the left, and the electrode lug 4111 of the second defective electrode roll 43 faces to the right. The height direction of the electrode inspection mechanism calibration system can be referenced... Figure 1 The direction indicated by arrow A. The first take-up drum 31 is located above the second take-up drum 32. It should be noted that the type and number of defects in the first defective pole roll 42 and the second defective pole roll 43 can be different. In this embodiment of the invention, during a single verification, two defective pole rolls 4 can be used as samples simultaneously, eliminating the need for an additional verification of the other defective pole roll 4, thus improving verification efficiency.

[0050] The electrode inspection mechanism 2 includes a CCD camera and a detector connected to the CCD camera. The CCD camera is used to periodically take pictures of the defective electrode strip 41 after unwinding to obtain multiple electrode segment images. The detector is used to determine the electrode inspection result based on the multiple electrode segment images.

[0051] Specifically, the CCD camera acquires a single pole piece image each time it takes a picture. By periodically taking multiple pictures of the unwound defective pole piece 41, the CCD camera will acquire multiple pole piece images. Each of these multiple pole piece images corresponds to a defective pole piece 41, meaning that defects on a defective pole piece 41 can be detected based on the multiple pole piece images.

[0052] The detector can pre-store qualified polar image fragments. It compares the captured polar image fragment with these qualified fragments to determine if defects exist. If the captured fragment fragment matches the qualified one, it is determined that no defects exist. If the captured fragment fragment does not match the qualified one, it is determined that a defect exists, and the defect type is determined based on the discrepancy. For example, if the discrepancy is the presence of yellow tape in the captured fragment fragment, the defect type is determined to be a tape-attachment defect.

[0053] The defective electrode strip 41 has at least one defect on its front and / or back sides; at least one electrode detection mechanism 2 includes a front electrode detection mechanism 21 and / or a back electrode detection mechanism 22, the front electrode detection mechanism 21 is used to detect defects on the front side of the defective electrode strip 41, and the back electrode detection mechanism 22 is used to detect defects on the back side of the defective electrode strip 41.

[0054] Specifically, at least one electrode inspection mechanism 2 preferably includes one front electrode inspection mechanism 21 and two back electrode inspection mechanisms 22. The back electrode inspection mechanism 22 is located near the take-up drum 3, and the front electrode inspection mechanism 21 is located near the unwinding drum 1. By using the front electrode inspection mechanism 21 and / or the back electrode inspection mechanism 22, defects on the front and / or back sides of the defective electrode strip 41 can be detected, avoiding missed detections.

[0055] The electrode inspection mechanism verification system also includes at least one marking machine 5. The marking machine 5 is electrically connected to the reverse electrode inspection mechanism 22 via a processor. The marking machine 5 is used to mark defects on the defective electrode strips 41. Specifically, the electrode inspection mechanism verification system preferably includes two marking machines 5. The marking machine 5 is located between the take-up drum 3 and the reverse electrode inspection mechanism 22. The defect markings can be yellow, white, red, etc.

[0056] The electrode inspection mechanism also includes multiple conveying rollers 6, which are used to convey the defective electrode strips 41 after unwinding. The multiple conveying rollers 6 are located between the unwinding drum 1 and the winding drum 3.

[0057] Specifically, the multiple conveying rollers 6 are divided into a first conveying mechanism 7, a second conveying mechanism 8, and a third conveying mechanism 9. The first conveying mechanism 7 is used to transport at least one unwound defective electrode strip 41, and the first conveying mechanism 7 is located between the unwinding drum 1 and the second conveying mechanism 8 or the third conveying mechanism 9. The first conveying mechanism 7 preferably includes four conveying rollers 6.

[0058] The second conveying mechanism 8 is used to convey a defective electrode strip 41 after unwinding to the first take-up drum 31. The second conveying mechanism 8 preferably includes four conveying rollers 6. The third conveying mechanism 9 is used to convey a defective electrode strip 41 after unwinding to the second take-up drum 32. The third conveying mechanism 9 preferably includes four conveying rollers 6.

[0059] The electrode inspection and calibration system also includes a measuring mechanism 10, which includes a CCD camera. The measuring mechanism 10 is used to measure the dimensions of the electrode 411, such as its length and width. The length of the electrode 411 can be referenced... Figure 3 The width of L1 and electrode 411 shown in the figure can be referenced. Figure 3 W1 is shown in the figure.

[0060] Secondly, referring to Figure 4 This invention also discloses a method for verifying electrode testing mechanisms, applicable to any of the aforementioned electrode testing mechanism verification systems. The electrode testing mechanism verification method includes:

[0061] Step 101: Obtain electrode testing results through an electrode testing institution.

[0062] The electrode inspection mechanism 2 is used to inspect defects on the unwound defective electrode strip 41 to obtain the electrode inspection result. The verification method of this electrode inspection mechanism is specifically executed by the processor, which is electrically connected to the electrode inspection mechanism 2. After obtaining the electrode inspection result, the electrode inspection mechanism 2 sends the electrode inspection result to the processor.

[0063] Step 102: Obtain actual defect information.

[0064] The actual defect information refers to the defect information on the defective electrode strip 41. The electrode inspection mechanism calibration system also includes a memory, which is communicatively connected to the processor, and the actual defect information is pre-stored in the memory.

[0065] Step 103: Compare the electrode inspection results with the actual defect information to determine the accuracy of the electrode inspection agency.

[0066] The electrode inspection result refers to the information on defects on the unwound defective electrode strip 41 detected by the electrode inspection mechanism 2, while the actual defect information refers to the information on the actual defects on the defective electrode strip 41. The electrode inspection result is compared with the actual defect information to determine their consistency; this consistency is taken as the accuracy of the electrode inspection mechanism. The highest accuracy of the electrode inspection mechanism is 1. If the electrode inspection result is completely consistent with the actual defect information, then the accuracy of the electrode inspection mechanism is 1.

[0067] Since the electrode testing mechanism verification method is applied to the aforementioned electrode testing mechanism verification system, it also possesses the beneficial effects of the aforementioned electrode testing mechanism verification system, which will not be elaborated here.

[0068] The electrode inspection results include the defect detection type and the number of defects detected. Actual defect information includes the actual defect type and the actual number of defects. Actual defect types can include film area damage, straight edge damage, bubbles, metal leakage, adhesive tape residue, pinholes, straight edge excess material, and tab folding. The actual number of defects can be eight.

[0069] The accuracy of the electrode testing organization is determined by comparing the electrode test results with the actual defect information. This includes: comparing the defect test types with the actual defect types to determine the type accuracy, where the type accuracy is the ratio of the number of defect test types that match the actual defect types to the total number of actual defect types; and determining the number accuracy by comparing the number of defect tests with the actual number of defects, where the number accuracy is the ratio of the number of defect tests to the actual number of defects.

[0070] Specifically, actual defect types include film area damage, straight edge damage, bubbles, metal leakage, tape residue, pinholes, straight edge excess material, and tab folding. When the defect detection types include film area damage, straight edge damage, metal leakage, tape residue, pinholes, straight edge excess material, and tab folding, seven of the detected defect types match the actual defect types. The total number of actual defect types is eight, resulting in a type accuracy of 7 / 8. When there are eight actual defects and seven defect detections, the number accuracy is 7 / 8.

[0071] The defective electrode strip 41 has at least one defect on its front and / or back sides. At least one electrode inspection mechanism 2 includes a front electrode inspection mechanism 21 and / or a back electrode inspection mechanism 22. The front electrode inspection mechanism 21 is used to detect defects on the front side of the defective electrode strip 41, and the back electrode inspection mechanism 22 is used to detect defects on the back side of the defective electrode strip 41. The electrode inspection results include the front electrode inspection results and / or the back electrode inspection results, and the actual defect information includes actual defect information on the front side and / or the back side.

[0072] Obtaining electrode testing results through an electrode testing institution includes obtaining front electrode testing results and / or back electrode testing results through a front electrode testing institution and / or a back electrode testing institution.

[0073] Obtain actual defect information, including: obtaining actual defect information from the front and / or actual defect information from the back.

[0074] The accuracy of the electrode testing mechanism is determined by comparing the electrode testing results with the actual defect information, including: comparing the front electrode testing results with the actual front defect information to determine the accuracy of the front electrode testing mechanism, and / or comparing the back electrode testing results with the actual back defect information to determine the accuracy of the back electrode testing mechanism.

[0075] Specifically, the electrode inspection results preferably include both the front and back electrode inspection results. The front electrode inspection results are those detected by the front electrode inspection mechanism 21, and the back electrode inspection results are those detected by the back electrode inspection mechanism 22. The actual defect information preferably includes both front and back actual defect information. Front actual defect information refers to the defect information on the front side of the defective electrode strip 41, and back actual defect information refers to the defect information on the back side of the defective electrode strip 41.

[0076] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0077] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the present invention, and all of these modifications are within the scope of protection of the present invention.

Claims

1. A calibration system for an electrode testing mechanism, characterized in that, The device includes an unwinding drum, at least one electrode detection mechanism, and at least one winding drum. The unwinding drum is used to mount at least one defective electrode roll. The defective electrode roll includes a defective electrode strip, which has at least one defect. At least one winding drum is used to wind up at least one defective electrode roll. It also includes a processor, which is used to obtain electrode detection results through the electrode detection mechanism, obtain actual defect information, compare the electrode detection results with the actual defect information, and determine the accuracy of the electrode detection mechanism, wherein the actual defect information refers to the defect information on the defective electrode strip.

2. The electrode testing mechanism calibration system according to claim 1, characterized in that, The defective electrode strip includes multiple electrodes, each electrode includes multiple tabs, and at least one defective electrode roll includes a first defective electrode roll and a second defective electrode roll. When the first defective electrode roll and the second defective electrode roll are sleeved on the unwinding drum, the orientation of the tabs in the first defective electrode roll is opposite to the orientation of the tabs in the second defective electrode roll. At least one of the take-up drums includes a first take-up drum and a second take-up drum, the first take-up drum and the second take-up drum being used to take up the first defective electrode roll and the second defective electrode roll, respectively, and the first take-up drum and the second take-up drum are distributed at intervals along the height direction of the electrode inspection mechanism verification system.

3. The electrode testing mechanism calibration system according to claim 1, characterized in that, The defective electrode roll also includes a protective film that covers at least the front and back sides of the defective electrode strip.

4. The electrode testing mechanism calibration system according to claim 1, characterized in that, The electrode inspection mechanism includes a CCD camera and a detector connected to the CCD camera. The CCD camera is used to periodically take pictures of the defective electrode strips after unwinding to obtain multiple electrode segment images. The detector is used to determine the electrode inspection result based on the multiple electrode segment images.

5. The electrode testing mechanism calibration system according to claim 1 or 4, characterized in that, The defective electrode strip has at least one defect on its front and / or back sides; at least one electrode detection mechanism includes a front electrode detection mechanism and / or a back electrode detection mechanism, wherein the front electrode detection mechanism is used to detect defects on the front side of the defective electrode strip, and the back electrode detection mechanism is used to detect defects on the back side of the defective electrode strip.

6. The electrode testing mechanism calibration system according to claim 5, characterized in that, The electrode inspection mechanism verification system also includes at least one marking machine, which is electrically connected to the reverse electrode inspection mechanism through the processor. The marking machine is used to mark defects on the defective electrode strips.

7. The electrode testing mechanism calibration system according to claim 1 or 2, characterized in that, The electrode inspection mechanism also includes multiple conveying rollers, which are used to convey defective electrode strips after unwinding. The multiple conveying rollers are located between the unwinding drum and the winding drum.

8. A calibration method for an electrode testing mechanism, characterized in that, The electrode testing mechanism verification system according to any one of claims 1 to 7, wherein the electrode testing mechanism verification method comprises: Obtain electrode testing results from electrode testing institutions; Obtain actual defect information, wherein the actual defect information refers to the defect information on the defective electrode strip; The accuracy of the electrode detection mechanism is determined by comparing the electrode detection results with the actual defect information.

9. The electrode testing mechanism verification method according to claim 8, characterized in that, The electrode detection results include the defect detection type and the number of defects detected, and the actual defect information includes the actual defect type and the actual defect number. The step of comparing the electrode inspection results with the actual defect information to determine the accuracy of the electrode inspection mechanism includes: The defect detection type is compared with the actual defect type to determine the type accuracy, wherein the type accuracy is the ratio of the number of defect detection types that match the actual defect type to the total number of actual defect types; The accuracy of the number of defects is determined by comparing the number of defects detected with the actual number of defects, wherein the accuracy of the number of defects is the ratio of the number of defects detected to the actual number of defects.

10. The electrode testing mechanism verification method according to claim 8 or 9, characterized in that, The defective electrode strip has at least one defect on its front and / or back sides; at least one electrode detection mechanism includes a front electrode detection mechanism and / or a back electrode detection mechanism, wherein the front electrode detection mechanism is used to detect defects on the front side of the defective electrode strip, and the back electrode detection mechanism is used to detect defects on the back side of the defective electrode strip. The electrode detection results include the front electrode detection results and / or the back electrode detection results, and the actual defect information includes the front actual defect information and / or the back actual defect information; The process of obtaining electrode testing results through an electrode testing mechanism includes: Obtain the front electrode test results and / or back electrode test results through the front electrode test institution and / or the back electrode test institution; The acquisition of actual defect information includes: Obtain actual defect information from the front and / or the back; The step of comparing the electrode inspection results with the actual defect information to determine the accuracy of the electrode inspection mechanism includes: The accuracy of the front electrode detection mechanism is determined by comparing the front electrode detection results with the actual front defect information, and / or the accuracy of the back electrode detection mechanism is determined by comparing the back electrode detection results with the actual back defect information.

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