An electrode tab yellow mark detection device and a battery cell winding apparatus

Abstract

The application provides an electrode sheet yellow mark detection device, which comprises an equipment rack, a detection support, a winding assembly and a detection assembly. The first conveying roller and the second conveying roller of the winding assembly are arranged in a first direction and parallel to a second direction, are rotationally connected with the equipment rack, and are sequentially provided with a transmission. The detection support is located between the two conveying rollers and is fixed with the equipment rack. The detection assembly comprises a detection unit and a filter. The detection unit is fixed with the detection support and faces the electrode sheet. The filter is arranged between the light inlet of the detection unit and the surface of the electrode sheet along a third direction. The device filters the interference light of the oil stains, dust and other color stains on the surface of the electrode sheet through the filter, and only allows the yellow mark reflected light to enter the detection unit, thereby solving the missed detection or misjudgment problem caused by the similar color of the yellow mark and the stains in the existing detection, avoiding the winding of the poor electrode sheet into the winding core or the misremoval of the qualified electrode sheet, and improving the quality and efficiency of battery production.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and mainly to an electrode yellow label detection device and a cell winding equipment. Background Technology

[0002] In the lithium-ion battery production process, laser cutting is one of the key steps in electrode processing. To ensure battery quality, defective electrodes are marked with yellow labels on their surfaces for subsequent identification and removal. Accurate detection of these yellow labels during the lithium-ion battery winding process is crucial to preventing defective electrodes from entering later stages.

[0003] However, in the winding process of lithium-ion battery production, in addition to the yellow labels that need to be detected, the electrode surface is also easily contaminated with oil, dust, and other colored stains, some of which are similar in color to the yellow labels. Currently, some winding equipment uses simple cameras to detect yellow labels, and the detection unit receives both the reflected light from the yellow label and the colored light from the stains. When the color difference between the two is small, the detection unit has difficulty accurately distinguishing the target yellow label from the interfering stains. If the recognition threshold for yellow labels is set too high, it is easy to miss the real yellow labels, causing the electrode with the yellow label to be wound into the core, resulting in undervoltage of the battery. If the recognition threshold for yellow labels is set too low, the stains will be mistakenly identified as yellow labels, causing qualified electrode sheets to be mistakenly rejected, resulting in waste of raw materials and a decrease in production efficiency. Utility Model Content

[0004] In view of the problems existing in the background technology, this utility model provides an electrode yellow label detection device and a cell winding equipment to solve the problems in the related technology.

[0005] To solve the above problems, this utility model is implemented as follows:

[0006] In a first aspect, this application provides an electrode yellow label detection device, the detection device comprising: an equipment frame, a detection bracket, a winding assembly, and a detection assembly;

[0007] The winding assembly includes a first conveyor roller and a second conveyor roller. Both the first conveyor roller and the second conveyor roller are rotatably connected to the equipment frame. The first conveyor roller and the second conveyor roller are spaced apart along a first direction and parallel to a second direction. The electrode sheet is wound sequentially through the first conveyor roller and the second conveyor roller.

[0008] Along the first direction, the detection bracket is disposed between the first conveying roller and the second conveying roller, and is fixedly connected to the equipment frame;

[0009] The detection assembly includes a detection unit and a filter. The detection unit is fixedly connected to the detection bracket and faces the electrode with its light inlet facing the electrode. The filter is disposed between the light inlet of the detection unit and the electrode.

[0010] Optionally, the electrode has a first side and a second side that are opposite to each other;

[0011] The number of detection components is two. Along a third direction, one detection unit is disposed on one side of the first surface and facing the first surface, and the other detection unit is disposed on one side of the second surface and facing the second surface. The third direction is a direction perpendicular to the electrode.

[0012] Optionally, the detection unit is a camera, and the light inlet of the camera is positioned facing the electrode.

[0013] Optionally, the detection unit is a color sensor, and the light inlet of the color sensor is positioned facing the electrode.

[0014] Optionally, the equipment frame further includes two side plates, which are disposed at both ends of the first conveying roller and the second conveying roller along the second direction, and the two ends of the first conveying roller and the second conveying roller are respectively rotatably connected to the two side plates;

[0015] The detection bracket is a frame structure, which is sleeved on the outside of the equipment frame. Along the second direction, the two opposite first sides of the frame structure are respectively fixedly connected to the two opposite side plates. The detection unit is disposed on the second side of the frame structure parallel to the first surface.

[0016] Optionally, the detection device further includes a position adjustment component;

[0017] Along the third direction, the position adjustment component is connected between the detection bracket and the detection component, and the position adjustment component is capable of adjusting the distance between the detection component and the electrode along the third direction.

[0018] Optionally, the position adjustment assembly includes an adjustment rod, a housing, and a positioning pin;

[0019] Along the third direction, the housing is fixed on the second side and is located on the side of the second side away from the electrode. A first through hole is provided at the connection between the second side and the housing, and the adjusting rod passes through the first through hole.

[0020] The housing has a cavity, the outer diameter of the adjusting rod is smaller than the inner diameter of the cavity, one end of the adjusting rod extends into the cavity through the first through hole, and the other end of the adjusting rod is fixedly connected to the detection unit;

[0021] The side wall of the housing has a plurality of opposing second through holes, which are spaced apart along the third direction. The adjusting rod has a third through hole, and the positioning pin passes through the second through hole and the third through hole located at the target position in the third direction.

[0022] Optionally, the detection device further includes a dust removal assembly, which is disposed in front of the winding assembly along the first direction;

[0023] The dust removal assembly includes an airflow generating component and a dust suction component. Along the second direction, the dust suction component and the airflow generating component are disposed on both sides of the electrode plate, and the air outlet of the airflow generating component is disposed opposite to the air inlet of the dust suction component.

[0024] Optionally, the detection device further includes an auxiliary light source assembly, which is fixedly connected to the detection bracket and faces the same side as the detection unit.

[0025] On the other hand, this application also provides a battery cell winding device, which includes the electrode yellow label detection device described in any of the above claims.

[0026] The electrode yellow label detection device in this application addresses the problem of confusion between yellow labels and colored stains in existing detection methods by adding a filter to the detection assembly and positioning it along a third direction (Z) between the light inlet of the detection unit and the electrode surface. The filter filters out colored light reflected from stains on the electrode surface, allowing only the characteristic light reflected from the yellow label to enter the detection unit, significantly reducing interference from non-target light. Simultaneously, the detection unit is fixed to the equipment frame by a detection bracket and located beside the electrode transport path between the first and second conveyor rollers. This allows it to stably receive the filtered yellow label light, significantly amplifying the color difference between the yellow label and the stain during detection. This effectively avoids missed or incorrect detections due to threshold setting issues, preventing yellow-labeled electrodes from being wound into the core and causing battery undervoltage, while also reducing the erroneous rejection of qualified electrodes, lowering raw material waste, and improving production efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an electrode yellow label detection device is provided in this application.

[0029] Figure 2 A schematic diagram of the position adjustment component in this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Equipment frame; 101. Side plate; 200. Detection bracket; 201. Frame structure; 2011. First side; 2012. Second side; 20121. First through hole; 300. Winding assembly; 301. First conveyor roller; 302. Second conveyor roller; 400. Detection assembly; 401. Detection unit; 402. Filter; 500. Electrode; 501. First surface; 502. Second surface; 600. Position adjustment assembly; 601. Adjustment rod; 602. Housing; 603. Positioning pin; 6011. Third through hole; 6021. Second through hole; 700. Dust removal assembly; 701. Airflow generating component; 702. Dust suction component; 800. Auxiliary light source assembly. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. Based on the embodiments of the present utility model, any product that is the same as or similar to the present utility model, derived by anyone under the guidance of the present utility model or by combining the features of the present utility model with other related technologies, falls within the protection scope of the present utility model. Furthermore, all other embodiments obtained by those skilled in the art without inventive effort are within the protection scope of the present utility model.

[0033] Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of this utility model specification.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] Firstly, such as Figure 1As shown, this application provides a yellow label detection device for electrode 500. The detection device includes: an equipment frame 100, a detection bracket 200, a winding assembly 300, and a detection assembly 400. The winding assembly 300 includes a first conveyor roller 301 and a second conveyor roller 302. Both the first conveyor roller 301 and the second conveyor roller 302 are rotatably connected to the equipment frame 100. The first conveyor roller 301 and the second conveyor roller 302 are spaced apart along a first direction and parallel to a second direction. The electrode 500 is wound sequentially around the first conveyor roller 301 and the second conveyor roller 302. Along the first direction, the detection bracket 200 is disposed between the first conveyor roller 301 and the second conveyor roller 302 and is fixedly connected to the equipment frame 100. The detection assembly 400 includes a detection unit 401 and a filter 402. The detection unit 401 is fixedly connected to the detection bracket 200 and faces the electrode 500 with its light inlet. The filter 402 is disposed between the light inlet of the detection unit 401 and the electrode 500.

[0036] Specifically, the testing device in this application includes an equipment frame 100, a testing bracket 200, a winding assembly 300, and a testing component 400. The equipment frame 100 supports all components of the entire electrode yellow label testing device, and the testing bracket 200 supports the testing component 400 and connects the testing component 400 to the equipment frame 100. The winding assembly 300 includes a first conveying roller 301 and a second conveying roller 302, both rotatably connected to the equipment frame 100. Along the electrode 500 conveying direction, the first conveying roller 301 and the second conveying roller 302 are spaced apart. The electrode 500 has a first surface 501 and a second surface 502 facing each other. Along the third direction Z, the first surface 501 or the second surface 502 of the electrode 500 contacts the roller surfaces of the first conveyor roller 301 and the second conveyor roller 302. The friction between the roller surfaces and the electrode 500 drives the electrode 500 to move along the first direction X, so that when the first conveyor roller 301 and the second conveyor roller 302 rotate, the electrode 500 moves along the first direction X. When the electrode 500 sequentially passes around the first conveyor roller 301 and the second conveyor roller 302, a straight detection section is formed between the two rollers, facilitating continuous scanning of the yellow mark by the detection unit 401. It should be noted that when the electrode 500 passes around the first conveyor roller 301 and the second conveyor roller 302, it only contacts the roller surface closest to the electrode 500; the electrode 500 is not wound around the roller surface. It should be noted that in this embodiment of the application... Figure 1 This is a schematic diagram of a part of the electrode yellow label detection device. For ease of understanding, the direction of electrode travel is shown as a straight section. Those skilled in the art can adjust the direction of electrode travel and the specific structure of the equipment frame according to the actual electrode winding device.

[0037] The detection bracket 200 is fixedly connected to the equipment frame 100 and is positioned between the first conveyor roller 301 and the second conveyor roller 302 along the first direction X. The detection unit 401 is fixedly connected to the equipment frame 100 and is positioned facing the first surface 501 or the second surface 502 of the electrode 500 to ensure stable and unobstructed detection of the electrode 500 by the detection unit 401, so as to detect the yellow mark on the electrode 500 that has traveled between the first conveyor roller 301 and the second conveyor roller 302. The filter 402 is fixedly connected to the detection unit 401 and is specifically set at the light inlet of the detection unit 401, that is, between the light inlet of the detection unit 401 and the first surface 501 or the second surface 502 of the electrode 500, so that the light on the electrode 500 passes through the filter 402 first and then enters the light inlet of the detection unit 401. It can be understood that the filter 402 can only allow yellow light with the same color as the yellow label of the electrode 500 to enter, so as to filter the light entering the detection unit 401.

[0038] Understandably, by setting a filter 402 between the light inlet of the detection unit 401 and the electrode 500, interference light reflected from oil stains, dust, and other colored dirt on the surface of the electrode 500 can be specifically filtered out, allowing only the characteristic light reflected from the yellow mark to enter the detection unit 401. This significantly amplifies the color difference between the yellow mark and the background, reducing the root cause of misjudgment from an optical perspective. This effectively solves the problem of missed or incorrect detection caused by the similarity in color between the yellow mark and the dirt in related technologies, greatly improving the accuracy of yellow mark identification. At the same time, the equipment frame 100 provides a stable mounting base for the winding assembly 300 and the detection bracket 200. The rotational connection of the first conveyor roller 301 and the second conveyor roller 302 ensures that the electrode 500 is smoothly transported along the first direction X. The straight detection section between the two rollers, combined with the precise positioning of the detection bracket 200, enables the detection unit 401 to perform continuous, unobstructed, and stable detection of the moving electrode 500, avoiding the impact of electrode 500 vibration or positional shift on detection accuracy and ensuring the reliability of the detection process. Furthermore, by reducing the false detection rate, the device effectively prevents defective electrode sheets 500 with yellow labels from being rolled into the core and flowing into subsequent processes, thereby reducing the occurrence of quality problems such as battery undervoltage and improving the quality stability of finished batteries. At the same time, by reducing the false detection rate, it avoids the waste of raw materials caused by the mistaken rejection of qualified electrode sheets 500, reduces production losses, and indirectly improves production efficiency, providing strong support for the large-scale and high-quality production of lithium-ion batteries.

[0039] Optionally, such as Figure 1As shown, the electrode 500 has a first surface 501 and a second surface 502 that are opposite to each other; there are two detection components 400. Along a third direction, one detection unit 401 is disposed on one side of the first surface 501 and facing the first surface 501, and the other detection unit 401 is disposed on one side of the second surface 502 and facing the second surface 502. The third direction is a direction perpendicular to the electrode 500.

[0040] Specifically, in this electrode yellow label detection device, there are two detection units 401, both connected to the equipment frame 100 via detection brackets 200. Along a third direction Z perpendicular to the surface of the electrode 500, one detection unit 401 is positioned corresponding to the first surface 501 of the electrode 500, with its light entrance facing the first surface 501, and a filter 402 is installed between it and the first surface 501. The other detection unit 401 is positioned corresponding to the second surface 502 of the electrode 500, with its light entrance facing the second surface 502, and a filter 402 is also installed between its light entrance and the second surface 502. When the electrode 500 is transported along the first direction X via the first conveyor roller 301 and the second conveyor roller 302, the two detection units 401 simultaneously detect both sides of the electrode 500. The filters 402 filter out stray light from their respective surfaces, ensuring that only the characteristic light reflected from the yellow label enters the detection unit 401.

[0041] Understandably, setting up two detection units 401 to detect both sides of the electrode 500 respectively can comprehensively cover the areas where the electrode 500 may have yellow labels, avoiding missed detections caused by yellow labels being attached to undetected sides. Both detection units 401 filter stray light through filters 402, and combined with a stable connection to the equipment frame 100, they can simultaneously acquire clear yellow label signals from both sides, improving the comprehensiveness and accuracy of the detection. At the same time, simultaneous double-sided detection does not require additional adjustment of the electrode 500's orientation, does not affect transmission efficiency, can effectively intercept defective electrode 500s with yellow labels on both sides, and can reduce the waste of qualified electrode 500s caused by misjudgment on one side, further ensuring battery production quality and production continuity.

[0042] Optionally, such as Figure 1As shown, the detection unit 401 is a camera, with its light inlet facing the electrode 500. Specifically, in this electrode yellow label detection device, the detection unit 401 uses a camera, such as a CCD camera (Charge Coupled Device). This embodiment does not limit the specific type of camera. Its light inlet is positioned along the third direction Z towards either the first surface 501 or the second surface 502 of the electrode 500, and a filter 402 is fixed between the light inlet and the surface of the electrode 500. The electrode 500 is smoothly transported along the first direction X by the first conveyor roller 301 and the second conveyor roller 302. When passing through the straight detection section between the two rollers, the camera is fixed to the equipment frame 100 by the detection bracket 200 and continuously photographs the surface of the electrode 500. The filter 402 pre-filters out reflected light from oil stains, dust, and other colored dirt, allowing only the yellow light reflected from the yellow label to enter the camera, ensuring a clear contrast between the yellow label and the background in the captured image. Understandably, during setup, the camera is fixed on the detection bracket 200 and the detection range of the camera is ensured to cover the width direction of the electrode 500.

[0043] Understandably, when using a camera as the detection unit 401, the use of a filter 402 can fully leverage the camera's high-definition imaging advantages. The image, filtered of stray light, can more accurately identify details of the yellow label, further reducing the risk of missed or incorrect detections due to dirt interference. The stable positioning of the camera facing the electrode 500 surface, combined with the smooth transmission of the conveyor rollers, enables continuous dynamic detection of the electrode 500, ensuring the consistency and reliability of the detection process. Simultaneously, the high-definition image data facilitates subsequent algorithm analysis and optimization, effectively intercepting defective electrode 500s with yellow labels, reducing battery undervoltage issues, and preventing the accidental rejection of qualified electrode 500s, thus improving production efficiency and product quality stability.

[0044] Optionally, such as Figure 1 As shown, the detection unit 401 is a color sensor, and the light inlet of the color sensor is positioned facing the electrode 500.

[0045] Specifically, in this electrode yellow label detection device, the detection unit 401 can be a color sensor, with its light entrance facing either the first surface 501 or the second surface 502 of the electrode 500 along the third direction Z. A filter 402 is installed between the light entrance and the surface of the electrode 500. The electrode 500 is transported along the first direction X under the drive of the first conveyor roller 301 and the second conveyor roller 302. When passing through the detection area between the two rollers, the color sensor is fixed to the equipment frame 100 via the detection bracket 200, receiving the reflected light from the surface of the electrode 500 in real time. The filter 402 only allows the yellow light reflected from the yellow label to pass through, filtering out interference light from oil, dust, and other colored stains, enabling the color sensor to accurately capture the characteristic light signal of the yellow label. Understandably, during setup, the color sensor is fixed to the detection bracket 200, ensuring that the camera's detection range covers the width direction of the electrode 500.

[0046] Understandably, when a color sensor is used as the detection unit 401, the use of a filter 402 can fully utilize its high sensitivity to specific wavelengths of light, quickly identifying the characteristic light reflected by the yellow label, resulting in a faster detection response and adaptability to high-speed transmission scenarios of the electrode 500. After the filter 402 filters out stray light, the color sensor's recognition threshold for the yellow label is easier to set, effectively reducing the probability of missed or false detections due to similar stain colors. The stable connection between the sensor and the equipment frame 100, and the precise orientation towards the electrode 500 surface, ensure a stable and reliable detection signal. This allows for timely interception of defective electrode 500s with yellow labels to reduce battery undervoltage issues, while also preventing the mistaken rejection of qualified electrode 500s, thus improving production continuity and cost control.

[0047] Optionally, such as Figure 1 As shown, the equipment frame 100 also includes two side plates 101, which are disposed at both ends of the first conveyor roller 301 and the second conveyor roller 302 along the second direction. The two ends of the first conveyor roller 301 and the second conveyor roller 302 are rotatably connected to the two side plates 101 respectively. The detection bracket 200 is a frame structure 201, which is sleeved on the outside of the equipment frame 100. Along the second direction, the two opposite first sides 2011 of the frame structure 201 are fixedly connected to the two opposite side plates 101 respectively. The detection unit 401 is disposed on the second side 2012 of the frame structure 201, which is parallel to the first surface 501.

[0048] Specifically, in this electrode yellow label detection device, the equipment frame 100 has two opposing side plates 101 along the second direction Y (the width direction of the electrode 500). The two ends of the first conveyor roller 301 and the second conveyor roller 302 are rotatably connected to the two side plates 101 respectively through bearings, ensuring that the conveyor rollers stably support the transmission of the electrode 500. The detection bracket 200 is a frame structure, sleeved on the outside of the equipment frame 100. Along the second direction Y, the two opposing first sides 2011 of the frame structure are fixedly connected to the two side plates 101, so that the frame spans the transmission path of the electrode 500. The detection unit 401 is set on the second side 2012 of the frame structure parallel to the first surface 501, providing stable support for the detection unit 401 installed on the frame structure and ensuring accurate alignment between the detection unit 401 and the surface of the electrode 500. The frame structure and the side plates 101 can be connected by bolts, and the specific connection method is not limited in this embodiment. During assembly, the frame structure is divided into two parts along the third direction Z. Each part is connected to the side plate 101 to form a complete frame structure. It is understood that along the third direction Z, the side plates 101 closest to the ground are connected to a base plate. A support structure is provided on the base plate, with one end connected to the base plate and the other end resting on the ground to support the entire detection setup. In some embodiments, when there is only one detection unit 401, the detection bracket 200 can be a support rod. This application does not limit its specific shape, as long as it can stably support the detection unit 401.

[0049] Understandably, the two side plates 101 of the equipment frame 100 provide reliable rotational support for the conveyor rollers, ensuring smooth and stable transmission of the electrode sheet 500 and reducing detection deviations caused by unstable transmission. After the frame-structured detection bracket 200 is fixed to the side plates 101, the overall rigidity is strengthened, effectively resisting vibration interference during equipment operation, ensuring the stability of the detection unit 401, and improving the consistency of yellow label detection. At the same time, the frame structure, with its integrated installation of the detection component 400, facilitates the integration and subsequent maintenance of the device, further enhancing its structural reliability and ease of use.

[0050] Optionally, such as Figure 1 As shown, the detection device also includes a position adjustment component 600; along the third direction, the position adjustment component 600 is connected between the detection bracket 200 and the detection component 400, and the position adjustment component 600 can adjust the distance between the detection component 400 and the electrode 500 along the third direction.

[0051] Specifically, in this electrode yellow label detection device, the detection device also includes a position adjustment component 600, which is connected between the detection bracket 200 and the detection component 400 along a third direction Z perpendicular to the surface of the electrode 500. When the thickness of the electrode 500 or the detection requirements change, by operating the position adjustment component 600, the detection component 400 can be driven to move closer to or further away from the surface of the electrode 500 along the third direction Z, precisely adjusting the distance between the detection unit 401 and the filter 402 and the electrode 500, so that the detection range of the detection unit 401 covers the width direction of the electrode 500. During the adjustment process, the detection bracket 200 provides stable support for the adjustment component, ensuring that the position of the detection component 400 remains stable after adjustment.

[0052] Understandably, the position adjustment component 600 allows the spacing between the detection component 400 and the electrode 500 to be flexibly adjusted according to actual needs. This adapts to the optimal detection distance requirements of electrodes 500 of different thicknesses or different types of detection units 401, improving the versatility and adaptability of the device. Precise spacing adjustment ensures that the filter 402 and the detection unit 401 are always in the optimal working position, reducing light acquisition deviations caused by improper spacing, further improving the accuracy and stability of yellow label detection, and providing convenience for subsequent equipment debugging and maintenance.

[0053] Optionally, such as Figure 2 As shown, the position adjustment assembly 600 includes an adjustment rod 601, a housing 602, and a positioning pin 603. Along the third direction, the housing 602 is fixed to a second side 2012 and positioned on the side of the second side 2012 away from the electrode 500. A first through hole 20121 is provided at the connection between the second side 2012 and the housing 602, and the adjustment rod 601 passes through the first through hole 20121. A cavity is formed inside the housing 602, and the outer diameter of the adjustment rod 601 is smaller than the inner diameter of the cavity. One end of the adjustment rod 601 extends into the cavity through the first through hole 20121, and the other end of the adjustment rod 601 is fixedly connected to the detection unit 401. Multiple opposing second through holes 6021 are provided on the sidewall of the housing 602, spaced apart along the third direction. The adjustment rod 601 has a third through hole 6011, and the positioning pin 603 passes through the second through hole 6021 and the third through hole 6011 located at the target position in the third direction.

[0054] Specifically, in the position adjustment assembly 600 of the electrode yellow label detection device, the housing 602 is fixed along the third direction Z to the second side 2012 of the detection bracket 200 frame, parallel to the electrode 500, and located on the side of the second side 2012 away from the electrode 500. The first through hole 20121 at the connection between the second side 2012 and the housing 602 allows the adjustment rod 601 to pass through. One end of the adjustment rod 601 extends into the inner cavity of the housing 602, and the other end is fixedly connected to the detection unit 401. The housing 602 has multiple second through holes 6021 spaced apart along the third direction Z on opposite sidewalls, and the adjustment rod 601 has a corresponding third through hole 6011. When it is necessary to adjust the distance between the detection component 400 and the electrode 500, move the adjusting rod 601 to align the third through hole 6011 with the second through hole 6021 at the target position, and pass the positioning pin 603 through the corresponding second through hole 6021 and third through hole 6011 to fix the position of the adjusting rod 601 and realize the distance adjustment.

[0055] Understandably, this adjustment assembly, through the cooperation of the adjustment rod 601, housing 602, and positioning pin 603, can precisely adjust the distance between the detection component 400 and the electrode 500 along the third direction Z. Multiple spaced second through holes 6021 provide multiple adjustment options for electrode 500s of different thicknesses or testing requirements, enhancing adaptability. The fixing method of the positioning pin 603 passing through the through holes ensures the stability of the detection component 400 after adjustment, preventing displacement due to vibration during equipment operation and ensuring the accuracy of light acquisition. Simultaneously, the simple structure and ease of operation facilitate rapid debugging and maintenance, further improving the practicality and testing reliability of the device.

[0056] Optionally, such as Figure 1 As shown, the detection device also includes a dust removal component 700. Along the first direction, the dust removal component 700 is disposed in front of the winding component 300. The dust removal component 700 includes an airflow generating component 701 and a dust suction component 702. Along the second direction, the dust suction component 702 and the airflow generating component 701 are disposed on both sides of the electrode 500, and the air outlet end of the airflow generating component 701 is disposed opposite to the air inlet end of the dust suction component 702.

[0057] Specifically, in this electrode yellow label detection device, the dust removal component 700 is positioned along the first direction X before the winding component 300 to clean the electrode 500 before it enters the first conveyor roller 301 and the second conveyor roller 302. The airflow generating component 701 and the dust suction component 702 of the dust removal component 700 are located on both sides of the electrode 500 along the second direction Y, with the air outlet of the airflow generating component 701 and the air inlet of the dust suction component 702 aligned with the surface of the electrode 500. When the electrode 500 is conveyed to the dust removal area, the airflow generating component 701 sprays clean airflow onto the surface of the electrode 500, blowing up dust, debris, and other impurities attached to the surface. At the same time, the dust suction component 702 is activated, sucking in and collecting the blown-up impurities and airflow through the oppositely positioned air inlet, thus completing the surface cleaning of the electrode 500 before it enters the detection area of ​​the winding component 300. The equipment frame 100 has corresponding fourth through holes on its side plates 101. The air inlet of the dust collection component 702 and the air outlet of the airflow generating component 701 are located in these fourth through holes to allow airflow to pass through. It is understood that the airflow generating component 701 and the dust collection component 702 are located on opposite sides of the electrode 500 along the second direction Y. The airflow direction can be parallel to the surface of the electrode 500 and along the third direction Z. The electrode 500 can be located on the central axis of the airflow generating component 701 and the dust collection component 702, so that the airflow can simultaneously blow on the first surface 501 and the second surface 502. The airflow generating component 701 can be an air pump, and the dust collection component 702 can be a negative pressure fan; this embodiment does not limit their use.

[0058] In some embodiments, the detection device further includes an iron removal component along a first direction X, the iron removal component being disposed before the dust removal component 700, so as to perform iron removal operation before the electrode 500 is dusted and cleaned.

[0059] Optionally, the detection device also includes an auxiliary light source assembly 800, which is fixedly connected to the detection bracket 200 and faces the same side as the detection unit 401.

[0060] Specifically, in this electrode yellow label detection device, the auxiliary light source assembly 800 is fixed to the detection bracket 200. Along a third direction Z perpendicular to the surface of the electrode 500, its luminescent surface faces the first surface 501 or the second surface 502 of the electrode 500, and is on the same side as the detection unit 401. The auxiliary light source assembly 800 can be a light-emitting diode, as long as it can provide sufficient light; this application imposes limitations on this limitation.

[0061] Understandably, the color of the light emitted by the auxiliary light source assembly 800 differs significantly from the color of the yellow label on the electrode 500. For example, a non-yellow light source such as blue or red is used to avoid the light from the light source itself being misinterpreted as reflected light from the yellow label. When the electrode 500 is transferred to the detection area after being cleaned by the dust removal assembly 700, the auxiliary light source assembly 800 is simultaneously turned on, projecting uniform non-yellow light onto the detection area on the surface of the electrode 500. This provides stable supplemental illumination for the yellow label and the surface of the electrode 500, ensuring that the yellow label reflects sufficient characteristic yellow light under illumination, while preventing the color of the light source from interfering with the filtering of stray light by the filter 402. This facilitates the subsequent accurate screening of the yellow label reflected light by the filter 402 and accurate identification by the detection unit 401.

[0062] On the other hand, this application also provides a cell winding device, which includes the electrode yellow label detection device of any of the above.

[0063] Specifically, the aforementioned electrode yellow label detection device is integrated into the battery cell winding equipment. The equipment frame 100 of the detection device is fixedly connected to the main frame of the winding equipment. Before entering the battery cell winding process, the electrode 500 is first detected by the detection unit 401 of the detection component 400 with the assistance of the filter 402 to filter out stray light. Only electrode 500 that passes the detection will then enter the subsequent battery cell winding stage.

[0064] Understandably, after integrating the aforementioned yellow label detection device into the cell winding equipment, the yellow label can be accurately identified before the electrode 500 enters the winding process, preventing yellow-labeled electrode 500 from being wound into the core and causing quality problems such as battery undervoltage, thus improving the quality of cell production from the source. In the description of this specification, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

Claims

1. A device for detecting yellow labels on electrodes, characterized in that, The detection device includes: an equipment frame (100), a detection bracket (200), a winding assembly (300), and a detection assembly (400); The winding assembly (300) includes a first conveyor roller (301) and a second conveyor roller (302). Both the first conveyor roller (301) and the second conveyor roller (302) are rotatably connected to the equipment frame (100). The first conveyor roller (301) and the second conveyor roller (302) are spaced apart along a first direction (X) and parallel to a second direction (Y). The electrode sheet (500) is wound sequentially around the first conveyor roller (301) and the second conveyor roller (302). Along the first direction (X), the detection bracket (200) is disposed between the first conveyor roller (301) and the second conveyor roller (302) and is fixedly connected to the equipment frame (100); The detection assembly (400) includes a detection unit (401) and a filter (402). The detection unit (401) is fixedly connected to the detection bracket (200), and the light inlet of the detection unit (401) faces the electrode (500). The filter (402) is disposed between the light inlet of the detection unit (401) and the electrode (500).

2. The electrode yellow label detection device according to claim 1, characterized in that, The electrode (500) has a first surface (501) and a second surface (502) that are opposite to each other; The number of detection components (400) is two. Along a third direction (Z), one detection unit (401) is disposed on one side of the first surface (501) and facing the first surface (501), and the other detection unit (401) is disposed on one side of the second surface (502) and facing the second surface (502). The third direction (Z) is a direction perpendicular to the electrode (500).

3. The electrode yellow label detection device according to claim 1, characterized in that, The detection unit (401) is a camera, and the light inlet of the camera is positioned facing the electrode (500).

4. The electrode yellow label detection device according to claim 1, characterized in that, The detection unit (401) is a color sensor, and the light inlet of the color sensor is positioned facing the electrode (500).

5. The electrode yellow label detection device according to claim 2, characterized in that, The equipment frame (100) also includes two side plates (101), which are disposed at both ends of the first conveying roller (301) and the second conveying roller (302) along the second direction (Y). The two ends of the first conveying roller (301) and the second conveying roller (302) are respectively rotatably connected to the two side plates (101). The detection bracket (200) is a frame structure, which is sleeved on the outside of the equipment frame (100). Along the second direction (Y), the two opposite first sides (2011) of the frame structure are fixedly connected to the two opposite side plates (101). The detection unit (401) is disposed on the second side (2012) of the frame structure parallel to the first surface (501).

6. The electrode yellow label detection device according to claim 5, characterized in that, The detection device also includes a position adjustment component (600); Along the third direction (Z), the position adjustment component (600) is connected between the detection bracket (200) and the detection component (400), and the position adjustment component (600) is capable of adjusting the distance between the detection component (400) and the electrode (500) along the third direction (Z).

7. The electrode yellow label detection device according to claim 6, characterized in that, The position adjustment assembly (600) includes an adjustment rod (601), a housing (602), and a positioning pin (603); Along the third direction (Z), the housing (602) is fixed on the second side (2012) and is located on the side of the second side (2012) away from the electrode (500). A first through hole (20121) is provided at the connection between the second side (2012) and the housing (602), and the adjusting rod passes through the first through hole (20121). The housing (602) has a cavity, the outer diameter of the adjusting rod (601) is smaller than the inner diameter of the cavity, one end of the adjusting rod (601) extends into the cavity through the first through hole (20121), and the other end of the adjusting rod (601) is fixedly connected to the detection unit (401); The sidewall of the housing (602) is provided with a plurality of opposing second through holes (6021), the second through holes (6021) are spaced apart along the third direction (Z), the adjusting rod (601) is provided with a third through hole (6011), and the positioning pin (603) passes through the second through hole (6021) and the third through hole (6011) located at the target position on the third direction (Z).

8. The electrode yellow label detection device according to claim 1, characterized in that, The detection device further includes a dust removal assembly (700), which is disposed in front of the winding assembly (300) along the first direction (X); The dust removal assembly (700) includes an airflow generating component (701) and a dust suction component (702). Along the second direction (Y), the dust suction component (702) and the airflow generating component (701) are disposed on both sides of the electrode plate (500), and the air outlet end of the airflow generating component (701) is disposed opposite to the air inlet end of the dust suction component (702).

9. The electrode yellow label detection device according to claim 1, characterized in that, The detection device also includes an auxiliary light source assembly (800), which is fixedly connected to the detection bracket (200) and faces the same side as the detection unit (401).

10. A battery cell winding device, characterized in that, The cell winding equipment includes the electrode yellow label detection device as described in any one of claims 1-9.

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