CCD (Charge Coupled Device) camera detection equipment for composite current collector

Abstract

The utility model discloses a CCD camera detection device for a composite current collector, which comprises a frame, and an unwinding assembly, a visual detection assembly, a power assembly, a scraping assembly and a winding assembly which are sequentially arranged on the frame along a first direction, and is characterized in that the unwinding assembly is used for unwinding the composite current collector along the first direction; the visual detection assembly is used for detecting and recording salient points which do not meet the standard and exist on the composite current collector, the power assembly is used for pulling the composite current collector to move towards the scraping and cutting assembly, and the scraping and cutting assembly can cut off the salient points which do not meet the standard on the composite current collector. The winding assembly is used for winding the composite current collector; the utility model can solve the problem that the traditional slitting equipment does not have the function of detecting the salient points on the composite current collector, so that the yield of the composite current collector is influenced.

Description

Technical Field

[0001] This utility model relates to the field of current collector detection, specifically to a CCD camera detection device for composite current collectors. Background Technology

[0002] Composite current collectors are a novel key material for lithium-ion batteries. Their core structure is a three-layer composite of metal, polymer, and metal, primarily used to replace traditional pure metal current collectors (such as aluminum foil and copper foil) to improve battery safety, energy density, and reduce costs. Currently, after composite current collector production, they need to be slit. During processing, bumps may appear on the composite current collector. If the bump height is too high, it can lead to stress concentration and cracking, affecting the performance of the composite current collector. Furthermore, during lithium battery use, the bumps can easily puncture the separator, causing a short circuit. Traditional production equipment lacks the ability to detect the bump height on the composite current collector, affecting the yield rate. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a CCD camera detection device for composite current collectors.

[0004] To achieve the above objectives, the technical solution adopted by this utility model includes a frame and an unwinding assembly, a vision inspection assembly, a power assembly, a scraping assembly, and a winding assembly arranged sequentially along a first direction on the frame. The unwinding assembly is used to release the composite current collector along the first direction. The vision inspection assembly is used to detect and record non-standard protrusions on the composite current collector. The power assembly is used to pull the composite current collector toward the scraping assembly. The scraping assembly can cut off the non-standard protrusions from the composite current collector. The winding assembly is used to wind up the composite current collector.

[0005] In the preferred embodiment of the CCD camera inspection equipment for composite current collectors described above, the unwinding assembly includes at least a rotating shaft rotatably mounted on the frame and a limiting roller for guiding the composite current collector on the rotating shaft.

[0006] In the preferred embodiment of the above-mentioned composite current collector CCD camera inspection device, the visual inspection component includes at least a CCD camera mounted on the frame, and the CCD camera is configured to be movable along a second direction.

[0007] In the preferred embodiment of the CCD camera inspection equipment for composite current collectors described above, the power assembly includes at least an active roller, a driven roller, and a first drive device for driving the active roller to rotate, all of which are rotatably mounted on the frame.

[0008] In the preferred technical solution of the above-mentioned composite current collector CCD camera inspection equipment, the scraping assembly includes at least a bracket disposed on the frame, a protruding cutter disposed on the bracket, and a second driving device for driving the protruding cutter to move.

[0009] In the preferred embodiment of the CCD camera inspection device for composite current collectors described above, the CCD camera is driven by a linear module to move along a second direction.

[0010] In the preferred embodiment of the above-mentioned composite current collector CCD camera inspection equipment, a blowing component is further provided on the frame at the discharge port of the scraping component. The blowing component is used to blow out and collect the non-standard protrusion residue cut off by the scraping component. The blowing component includes at least a nozzle.

[0011] In the preferred technical solution of the CCD camera inspection equipment for composite current collectors described above, the active roller and the driven roller are coated with polytetrafluoroethylene coating.

[0012] In the preferred embodiment of the CCD camera inspection device for composite current collectors described above, a guide roller is provided on the side of the vision inspection component near the unwinding component. The guide roller is used to guide the composite current collector to move toward the scraping component. The height of the guide roller is the same as the horizontal shooting height of the CCD camera, and the CCD camera is facing the guide roller.

[0013] In the preferred technical solution of the CCD camera inspection device for the composite current collector described above, the angle between the CCD camera and the composite current collector is 30°-60°.

[0014] The beneficial effect of this utility model is that it uses a CCD camera to photograph and inspect the composite current collector released by the unwinding assembly to record the non-standard protrusions on the composite current collector. At the same time, it uses a second driving device to control the raising and lowering of the protrusion cutter to remove the non-standard protrusions on the composite current collector, thereby reducing the problem of quality defects in the composite current collector, improving the utilization rate of the composite current collector, and making it practical. Attached Figure Description

[0015] Figure 1 This is the main view of the present utility model. Figure 1 ;

[0016] Figure 2 This is the main view of the present utility model. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the protruding cutter structure in this utility model;

[0019] In the diagram: 1. Frame; 2. Unwinding assembly; 21. Rotating shaft; 22. Limiting roller; 3. Vision inspection assembly; 31. CCD camera; 32. Linear module; 4. Power assembly; 41. Driven roller; 42. Driven first device; 43. Scraping assembly; 5. Support; 51. Raised dot cutter; 52. Driven second device; 53. Composite current collector; 6. Guide roller; 7. Light source; 8. Blowing assembly; 9. Detailed Implementation

[0020] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0021] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figures 1 to 2 As shown, the CCD camera inspection device for composite current collectors of this utility model includes a frame 1 and an unwinding assembly 2, a vision inspection assembly 3, a power assembly 4, a scraping assembly 5, and a winding assembly arranged sequentially along a first direction on the frame 1. The unwinding assembly 2 is used to release the composite current collector 6 along the first direction. The vision inspection assembly 3 is used to detect and record non-standard protrusions on the composite current collector 6. The power assembly 4 is used to pull the composite current collector 6 toward the scraping assembly 5. The scraping assembly 5 can scrape off non-standard protrusions on the surface of the composite current collector 6. The winding assembly is used to wind up the composite current collector 6.

[0024] See Figure 1 , Figure 2The first direction is the length direction of the frame 1. The unwinding assembly 2, vision inspection assembly 3, power assembly 4 and scraping assembly 5 are arranged sequentially on the frame 1 along the first direction. The composite current collector 6 wound on the unwinding assembly 2 can be gradually unwound under the traction of the power assembly 4. The vision inspection assembly 3 is located between the unwinding assembly 2 and the power assembly 4. It can detect and record the non-standard protrusions on the composite current collector 6. The scraping assembly 5 can scrape off the non-standard protrusions on the composite current collector 6, thereby improving the utilization rate of the composite current collector 6 and reducing waste.

[0025] Specifically, when inspecting the composite current collector 6, the power assembly 4 and the winding assembly first pull the composite current collector 6, so that the composite current collector 6 on the unwinding assembly 2 can be released on the frame 1 along the first direction. When the composite current collector 6 passes the vision inspection assembly 3, the vision inspection assembly 3 can detect the position of the protrusion on the composite current collector 6. When the position of the protrusion does not meet the standard, the vision inspection assembly 3 can record the position so that the scraping assembly 5 can scrape off the non-standard position on the composite current collector 6, thereby reducing the quality defects of the composite current collector 6, improving the utilization rate of the composite current collector 6, and making it practical.

[0026] In one or more embodiments, the unwinding assembly 2 includes at least a rotating shaft 21 rotatably mounted on the frame 1 and a limiting roller 22 for guiding the composite current collector 6 on the rotating shaft 21. The winding roller is rotatably mounted on the other end of the frame 1 away from the unwinding assembly 2 via the rotating shaft. The rotating shaft is driven by a motor to realize the winding of the composite current collector 6.

[0027] See Figure 1 The composite current collector 6 is wound on the rotating shaft 21. Released from the rotating shaft 21, the composite current collector 6 passes through the limiting roller 22, which restricts the position of the composite current collector 6, improving the accuracy of the vision inspection component 3 in detecting non-standard protrusions on the composite current collector 6 and enhancing the processing effect of the composite current collector 6 in this application. In other possible embodiments, a motor is installed at one end of the rotating shaft 21; the smoothness of releasing the composite current collector 6 is further improved by controlling the rotating shaft 21 with the motor.

[0028] In one or more embodiments, the visual inspection component 3 includes at least a CCD camera 31 mounted on the frame 1 and a light source 8 that illuminates the surface of the composite current collector 6. The CCD camera 31 and the light source 8 are located above the composite current collector 6 and are arranged opposite to each other. When the light source 8 illuminates the surface of the composite current collector 6, if it illuminates a protrusion, the CCD camera 31 will take a picture to form a bright and dark area, thereby recording the position and relative height of the protrusion. The angle formed by the CCD camera 31 and the surface of the composite current collector 6 is the same as the angle at which the light source 8 illuminates the composite current collector 6, and the angle is 30°-60°, more preferably 45°. Within this angle range, the detection effect of the CCD camera 31 is more accurate, improving the detection accuracy of the visual inspection component 3. The CCD camera 31 is configured to be movable along a second direction; the CCD camera 31 is driven by the linear module 32 to move along the second direction.

[0029] In another implementation, see Figure 3 The CCD camera 31 has a guide roller 7 on the side near the unwinding assembly 2. The composite current collector 6 is guided by the guide roller 7 to move towards the scraping assembly 5. The height of the guide roller 7 is the same as the horizontal shooting height of the CCD camera. A light source 8 is set on the side of the guide roller 7 away from the CCD camera 31. The light source 8 is set opposite to the CCD camera 31. The CCD camera 31 horizontally shoots the composite current collector 6 passing over the top of the guide roller 7. At this time, the composite current collector 6 is in a stable state under the support of the guide roller 7. The vibration of the composite current collector 6 during the transmission process will not affect the detection accuracy. The height and position of the protrusion can be detected more accurately, which further improves the detection accuracy of the vision inspection assembly 3.

[0030] See Figure 1 , Figure 2 The second direction is the width direction of the frame 1. The CCD camera 31 is mounted on the linear module 32. The linear module 32 can drive the CCD camera 31 to move along the second direction. With this setting, it is possible to detect and photograph composite current collectors 6 of different widths, thereby improving the applicability of this application.

[0031] In one or more embodiments, the power assembly 4 includes at least a drive roller 41, a driven roller 42, and a first drive device 43 for driving the drive roller 41 to rotate, all of which are rotatably mounted on the frame 1.

[0032] See Figure 1 , Figure 2The first driving device 43 can be a servo motor; the active roller 41 and the driven roller 42 are rotated sequentially on the frame 1 in the vertical direction. The composite current collector 6 released by the unwinding assembly 2 passes between the active roller 41 and the driven roller 42. The first driving device 43 drives the active roller 41 to rotate, so that the composite current collector 6 located between the active roller 41 and the driven roller 42 can be pulled toward the scraping assembly 5. It has the characteristics of simple structure and high degree of mechanization, and is practical.

[0033] In one or more embodiments, the scraping assembly 5 includes at least a bracket 51 mounted on the frame 1, a raised cutter 52 mounted on the bracket 51, and a second drive device 53 for driving the raised cutter 52 to move. See also Figure 1 , Figure 2 The second driving device 53 can be a cylinder, and the protrusion cutter 52 is installed at the extended shaft end of the cylinder. When the CCD camera 31 detects a protrusion that does not meet the standard, it sends a feedback signal to the second driving device 53. The second driving device 53 controls the protrusion cutter 52 to move up and down, and controls the distance between the protrusion cutter 52 and the surface of the composite current collector 6 to scrape and remove the protrusion. The blade of the protrusion cutter 52 is arc-shaped and moves in the opposite direction to the movement of the composite current collector 6, which is beneficial for scraping the protrusion. This can achieve the removal of protrusions on the surface of the composite current collector 6 that do not meet the requirements.

[0034] In one or more embodiments, a blowing assembly 9 is also provided on the frame 1 at the discharge port of the scraping assembly 5. The blowing assembly 9 is used to blow out and collect the non-standard composite current collector 6 cut off by the scraping assembly 5. The blowing assembly 9 includes at least a nozzle.

[0035] The blowing assembly 9 includes at least a nozzle and a pump body connected to the nozzle. After the convex cutter 52 cuts off the non-standard protruding part of the composite current collector 6, the pump body draws external airflow to the nozzle and sprays it out through the nozzle, so that the airflow sprayed out by the nozzle blows the cut protruding residue out of the frame 1, avoiding the protruding residue from being trapped in the composite current collector 6 and winding it up, thereby improving the winding efficiency of the composite current collector 6 in this application.

[0036] In one or more embodiments, the driving roller 41 and the driven roller 42 are coated with a polytetrafluoroethylene (PTFE) coating. It should be noted that the PTFE coating has a certain self-lubricating and anti-corrosion effect, which can reduce the problem of stains on the driving roller 41 and the driven roller 42 contaminating the composite current collector 6.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A composite current collector CCD camera inspection apparatus characterized by comprising: The machine frame and the unwinding assembly, the visual detection assembly, the power assembly, the scraping assembly and the winding assembly arranged in sequence along the first direction, wherein the unwinding assembly is used to unwind the composite current collector along the first direction, the visual detection assembly is used to detect the non-standard protrusions on the composite current collector, the power assembly is used to pull the composite current collector to move towards the scraping assembly, the scraping assembly can cut off the non-standard protrusions on the composite current collector, and the winding assembly is used to wind the composite current collector.

2. The composite current collector CCD camera inspection apparatus of claim 1, wherein: The unwinding assembly at least comprises a rotating shaft rotatably installed on the machine frame and a limiting roller for guiding the composite current collector on the rotating shaft.

3. The composite current collector CCD camera inspection apparatus of claim 1, wherein: The visual detection assembly at least comprises a CCD camera arranged on the machine frame, and the CCD camera is configured to be movable along the second direction.

4. The composite current collector CCD camera inspection apparatus of claim 1, wherein: The power assembly at least comprises a driving roller rotatably installed on the machine frame, a driven roller and a first driving device for driving the driving roller to rotate.

5. The composite current collector CCD camera inspection apparatus of claim 1, wherein: The scraping assembly at least comprises a bracket arranged on the machine frame, a protrusion cutter arranged on the bracket and a second driving device for driving the protrusion cutter to move.

6. The composite current collector CCD camera inspection apparatus of claim 3, wherein: The CCD camera is driven by the linear module to move along the second direction.

7. The composite current collector CCD camera inspection apparatus of claim 1, wherein: Further comprising a blowing assembly arranged at the discharge port of the scraping assembly on the machine frame, and the blowing assembly is used to blow the non-standard protrusion residues cut off by the scraping assembly to be collected, and the blowing assembly at least comprises a nozzle.

8. The composite current collector CCD camera inspection apparatus of claim 4, wherein: The driving roller and the driven roller are sprayed with a polytetrafluoroethylene coating.

9. The composite current collector CCD camera inspection apparatus of claim 3, wherein: The visual detection assembly is provided with a guide roller on the side close to the unwinding assembly, the guide roller is used to guide the composite current collector to move towards the scraping assembly, the height of the guide roller is the same as the horizontal shooting height of the CCD camera, and the CCD camera faces the guide roller.

10. The composite current collector CCD camera inspection apparatus of claim 3, wherein: The angle formed by the CCD camera and the composite current collector is 30°-60°.

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