A centering tube loading alignment method and device based on camera CCD detection

Abstract

The application provides a kind of based on camera CCD detection's middle core tube loading alignment method and device, method includes: step S1:in the battery core winding process, middle core tube reaches detection position, CCD camera obtains the image of middle core tube;Step S2: the image obtained by CCD camera is preprocessed;Step S3: by image processing algorithm, the feature point or contour of middle core tube is extracted by CCD camera and is fed back to winding master control PLC;Step S4: winding master control PLC calculates the position deviation of middle core tube according to the preset alignment standard, and determines the angle of inner hexagon of middle core tube;Step S5: winding master control PLC judges the position deviation of middle core tube, the angle of inner hexagon and sends to winding control system, winding control system adjusts the angle of winding needle and the angle of middle core tube is consistent, completes middle core tube loading alignment.The application can realize the automatic detection of middle core tube loading alignment, reduce manual intervention, improve production efficiency and the accuracy of alignment.

Description

Technical Field

[0001] This invention relates to the field of battery cell manufacturing, and more specifically, to a method and apparatus for loading and aligning core tubes based on camera CCD detection. Background Technology

[0002] In the battery cell manufacturing process, the accurate positioning of the core tube is crucial to the product's quality and performance. Traditional core tube feeding methods lack alignment techniques, relying primarily on the forced insertion of winding needles. This approach is cumbersome, inefficient, and lacks accuracy. Incorrect angle alignment can cause the winding needles to jam against the core tube, triggering equipment alarms and severely impacting winding efficiency. In particular, the precise detection of the core tube's internal hexagonal angle and the winding needle angle significantly affects product quality and performance. Therefore, a method is needed that can automatically detect core tube feeding alignment and accurately measure the internal hexagonal angle and winding needle angle to improve production efficiency and product quality. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a method and apparatus for aligning and loading core tubes based on camera CCD detection. By detecting images through camera CCD, the method achieves accurate positioning of the core tube during the battery cell winding process, especially by accurately detecting the angle of the hexagonal corners and the angle of the winding needles inside the core tube.

[0004] According to a first aspect of the present invention, a method for aligning and loading core tubes based on camera CCD detection is provided, comprising: Step S1. During the battery cell winding process, the core tube reaches the detection position, and the CCD camera acquires an image of the core tube; Step S2. The CCD camera preprocesses the acquired images; Step S3. Using image processing algorithms, the CCD camera extracts the feature points or contours of the core tube and feeds them back to the winding main control PLC; Step S4. The winding main control PLC calculates the positional deviation of the core tube according to the preset alignment standard and determines the angle of the inner hexagon of the core tube; Step S5. The main control PLC of the winding system determines the positional deviation of the core tube and the angle of the internal hexagon and sends them to the winding control system. The winding control system adjusts the angle of the winding needle to match the angle of the core tube, thus completing the core tube feeding and alignment.

[0005] Based on the above technical solution, the present invention can also be improved as follows.

[0006] Optionally, in step S2, the preprocessing includes noise reduction and contrast enhancement.

[0007] Optionally, in step S3, the step of extracting feature points or contours of the core tube by the CCD camera through an image processing algorithm and feeding them back to the PLC includes: The product's feature locations are photographed using a CCD camera, industrial lens, and light source. The image data is then acquired and processed by an image processor. The image processing algorithm is provided by the accompanying PC software.

[0008] Optionally, in step S5, the winding main control PLC determines the positional deviation of the core tube and the angle of the internal hexagon, including: The winding main control PLC judges and adjusts based on the angle of the hexagon inside the core tube to ensure that the position deviation of the core tube, the angle of the hexagon inside the core tube, and the winding needle angle are within the allowable range; and it issues an early warning when the position deviation of the core tube, the angle of the hexagon inside the core tube, and the winding needle angle exceed the range.

[0009] Optionally, in step S5, after the winding control system adjusts the angle of the winding needle to be consistent with the angle of the core tube, the following steps are also included: the core tube is picked up by the robot arm and placed at the loading position, and then lifted by the robot arm to the winding needle position, and the winding needle is inserted to complete the loading action.

[0010] Optionally, the winding control system consists of a winding machine control host, a main control PLC, a servo motor, and winding needles. The results output by the CCD industrial control computer are given to the winding main control PLC. The PLC controls the servo motor to output the rotation angle, and uses this to control the angle of the winding needles, which are matched with the hexagonal angle inside the core tube.

[0011] According to a second aspect of the present invention, a core tube feeding and alignment device is provided, comprising: a winding machine core winding structure, a core tube, a core tube feeding waiting position, a light source, an industrial lens, and a CCD camera; wherein, The winding machine cell winding structure includes a winding machine control host and a winding needle. The winding needle is fixed on the winding machine control host. The winding machine control host is driven by a servo motor, which is controlled by a PLC. One end of the coiling needle is connected to the core tube feeding waiting position, and a fixing block is provided on one side of the core tube feeding waiting position, and the core tube is placed on the fixing block; A shelf is provided on the other side of the core tube loading waiting position. A light source and an industrial lens are placed on the shelf. A CCD camera is also installed at the end of the industrial lens.

[0012] Optionally, the winding needles are configured with three stations, arranged at 120° intervals on the main machine with the central axis of the winding machine control host as the center, and the angle of the winding needles is adjustable.

[0013] Optionally, the core tube loading waiting position is L-shaped, the winding needle is connected to the short side of the L-shape, and a shelf is fixedly connected to the long side of the L-shape. The industrial lens is at the same level as the core tube.

[0014] The technical effects and advantages of this invention are as follows: This invention provides a method and apparatus for aligning and loading core tubes based on CCD camera detection. By detecting images through a CCD camera, the method achieves accurate positioning of the core tube during the battery cell winding process, particularly by precisely detecting the angles of the internal hexagonal corners and the winding needle angles of the core tube. Through image processing and algorithm analysis, this method enables automatic detection of core tube alignment during loading, reducing manual intervention and improving production efficiency and alignment accuracy.

[0015] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0016] Figure 1 This is a flowchart of the core tube loading and alignment process provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the core tube feeding and alignment device provided in an embodiment of the present invention; Figure 3 This is another structural schematic diagram of the core tube feeding and alignment device provided in an embodiment of the present invention.

[0017] In the diagram, 1-winding structure of the battery cell; 2-winding needle; 3-core tube feeding waiting position; 301-fixing block; 4-core tube; 5-light source; 6-industrial lens; 7-CCD camera. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Understandably, given the deficiencies in the background technology, this invention proposes a method for aligning and loading core tubes based on camera CCD detection, specifically as follows: Figure 1 As shown, the method includes the following steps: Step 1: During the battery cell winding process, the core tube 4 reaches the detection position, and the CCD camera 7 acquires an image of the core tube 4; Specifically, in this implementation step, the core tube 4 reaches the CCD detection stopping position through the automatic feeding mechanism, such as... Figure 2 As shown, a CCD camera, an industrial lens 6, and a light source 5 are used to capture images of the feature locations on the product. The image data is then processed by an image processor (PC). In this technical solution, the automatic detection of the core tube 4 is achieved through image detection by the CCD camera, reducing manual intervention and improving production efficiency.

[0020] Step 2: The CCD camera 7 preprocesses the acquired images; Specifically, in this implementation step, the acquired image is preprocessed by the industrial PC host computer (Windows system with image recognition software) of the camera CCD. The preprocessing includes noise reduction and contrast enhancement.

[0021] Step 3: Using image processing algorithms, the CCD camera 7 extracts the feature points or contours of the core tube 4 and feeds them back to the winding main control PLC; Specifically, in this implementation step, a dedicated CCD camera, an industrial lens 6, and a light source 5 are used to capture images of the feature locations on the product. The image data is then processed by an image processor (PC). Existing software allows for manual parameter setting to automatically calculate and output the results. Feature locations need to be manually set in the software. The software takes photos using a camera, and the user marks feature points on the photos, such as one side or the included angle of two sides of an internal hexagon, as feature points for subsequent automatic recognition.

[0022] In the above technical solution, through image processing and algorithm analysis, the positional deviation of the core tube 4 can be accurately calculated, and the angle of the internal hexagon of the core tube 4 can be accurately detected, thereby improving the accuracy of alignment.

[0023] Step 4: The winding main control PLC calculates the positional deviation of the core tube 4 according to the preset alignment standard, and determines the angle of the inner hexagon of the core tube 4; Specifically, in this implementation step, the characteristic positions on the product are photographed and imaged using a CCD camera, an industrial lens 6, and a light source 5, and the image data is collected and processed by an image processor.

[0024] Step 5: The main control PLC of the winding system determines the position deviation of the core tube 4 and the angle of the internal hexagon and sends it to the winding control system. The winding control system adjusts the angle of the winding needle 2 to match the angle of the core tube 4, thus completing the feeding and alignment of the core tube 4.

[0025] Specifically, in this implementation step, a CCD camera, an industrial lens 6, and a light source 5 are used to capture images of the feature positions on the product. Image data is then acquired and processed by an image processor. When judging the positional deviation of the core tube 4 and the angle of the internal hexagon, adjustments can be made based on the angle of the internal hexagon of the core tube 4 to ensure that the positional deviation of the core tube 4, the angle of the internal hexagon of the core tube 4, and the angle of the winding needle 2 are within the allowable range. Furthermore, situations where the positional deviation, the angle of the internal hexagon of the core tube 4, and the angle of the winding needle 2 exceed the allowable range can be detected promptly, and an early warning can be issued to avoid affecting subsequent process steps. The allowable range is 0.5-1°.

[0026] The winding control system consists of a winding machine control host, a main control PLC, a servo motor, and winding needle 2. The results output by the CCD industrial control computer are given to the winding main control PLC. The PLC controls the servo motor to output the rotation angle, and uses this to control the angle of winding needle 2, which is matched with the internal hexagon angle of the core tube 4.

[0027] Furthermore, it also includes: the core tube 4 is picked up by the robot arm and placed at the loading position, and then lifted by the robot arm to the position of the winding needle 2, where the winding needle 2 is inserted to complete the loading action.

[0028] In the above technical solution, the embodiments of the present invention are applicable to the loading and alignment of the core tube 4 in the battery cell manufacturing process, and are particularly suitable for accurately detecting the angle of the internal hexagon of the core tube 4 and the angle of the coiling needle 2, and have broad application prospects.

[0029] It should be noted that the specific embodiments of the present invention can be adjusted and varied according to actual needs. For example, the image processing algorithm and alignment standard can be adjusted according to different battery cell manufacturing processes. In addition, suitable camera CCD and image processing software can be selected according to actual conditions.

[0030] Furthermore, embodiments of the present invention also provide a core tube feeding and alignment device, such as... Figure 2 and Figure 3 As shown, the device includes a winding structure 1 for the battery cell, a core tube, a core tube loading and waiting position 3, a light source 5, an industrial lens 6, and a CCD camera 7, wherein: The winding structure 1 of the battery cell includes a winding machine control host and winding needles 2. The winding needles 2 are configured with three stations and are arranged at 120° intervals on the host with the central axis of the winding structure 1 as the center. The angle of the winding needles 2 is adjustable. The winding machine control host is driven by a servo motor, which is controlled by a PLC. During operation, the results output by the CCD industrial control computer are given to the winding main control PLC. The PLC controls the rotation angle of the servo motor and uses this to control the angle of the winding needles 2, which is matched with the internal hexagonal angle of the core tube 4.

[0031] One end of the coil needle 2 is connected to the core tube feeding waiting position 3. The core tube feeding waiting position 3 is L-shaped. The coil needle 2 is connected to the short side of the L-shape. A fixing block 301 is provided on one side of the long side of the L-shape. The core tube 4 is placed on the fixing block 301. A shelf is provided on the side of the core tube loading waiting position 3 away from the short side of the L-shape. A light source 5 and an industrial lens 6 are placed on the shelf. A CCD camera 7 is located at the tail end of the industrial lens 6. For better imaging, the industrial lens 6 is positioned at the same level as the core tube 4. A light source 5 is located at the outer end of the industrial lens 6 to ensure clear images.

[0032] In summary, this embodiment of the invention uses a CCD camera to detect images, achieving accurate positioning of the core tube 4 during the battery cell winding process, particularly for precise detection of the angles of the internal hexagon of the core tube 4 and the angle of the winding needle 2. This method, through image processing and algorithm analysis, enables automatic detection of the alignment of the core tube 4 during loading, reducing manual intervention and improving production efficiency and alignment accuracy.

[0033] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0034] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for loading and aligning core tubes based on camera CCD detection, characterized in that, Includes the following steps: Step S1. During the winding process of the battery cell, the core tube (4) reaches the detection position, and the CCD camera (7) acquires the image of the core tube (4); Step S2. The CCD camera (7) preprocesses the acquired images; Step S3. Through image processing algorithms, the CCD camera (7) extracts the feature points or contours of the core tube (4) and feeds them back to the winding main control PLC; Step S4. The winding main control PLC calculates the positional deviation of the core tube (4) according to the preset alignment standard, and determines the angle of the inner hexagon of the core tube (4); Step S5. The winding main control PLC judges the position deviation of the core tube (4) and the angle of the internal hexagon and sends it to the winding control system. The winding control system adjusts the angle of the winding needle (2) to match the angle of the core tube (4) to complete the feeding and alignment of the core tube (4).

2. The method for loading and aligning a core tube based on camera CCD detection according to claim 1, characterized in that, In step S2, the preprocessing includes noise reduction and contrast enhancement.

3. The method for loading and aligning a core tube based on camera CCD detection according to claim 1, characterized in that, In step S3, the step of extracting feature points or contours of the core tube (4) by the CCD camera (7) through image processing algorithms and feeding them back to the PLC includes: The product features are photographed using a CCD camera, an industrial lens (6), and a light source (5). The image data is then processed by an image processor. The image processing algorithm is provided by the accompanying PC software.

4. The method for loading and aligning a core tube based on camera CCD detection according to claim 1, characterized in that, In step S5, the winding main control PLC determines the positional deviation and internal hexagon angle of the core tube (4) as follows: The winding main control PLC judges and adjusts according to the angle of the inner hexagon of the core tube (4) to ensure that the position deviation of the core tube (4), the angle of the inner hexagon of the core tube (4) and the angle of the winding needle (2) are within the allowable range; and provides an early warning when the position deviation of the core tube (4), the angle of the inner hexagon of the core tube (4) and the angle of the winding needle (2) exceed the allowable range.

5. The method for loading and aligning a core tube based on camera CCD detection according to claim 1, characterized in that, In step S5, after the winding control system adjusts the angle of the winding needle (2) to be consistent with the angle of the core tube (4), it further includes: the core tube (4) is picked up by the robot and placed at the loading position, and lifted by the robot to the position of the winding needle (2), and the winding needle (2) is inserted to complete the loading action.

6. The method for loading and aligning a core tube based on camera CCD detection according to claim 5, characterized in that, The winding control system consists of a winding machine control host, a main control PLC, a servo motor, and a winding needle (2). The result output by the CCD industrial control computer is given to the winding main control PLC. The PLC controls the servo motor to output the rotation angle, and uses this to control the angle of the winding needle (2), which matches the internal hexagonal angle of the core tube (4).

7. A core tube loading and alignment device, used to perform a core tube loading and alignment method based on camera CCD detection as described in any one of claims 1 to 6, characterized in that, include: The winding machine includes a battery cell winding structure (1), a core tube (4), a core tube loading and waiting position (3), a light source (5), an industrial lens (6), and a CCD camera (7); among which, The winding structure (1) of the winding machine includes a winding machine control host and a winding needle (2). The winding needle (2) is fixed on the winding machine control host. The winding machine control host is driven by a servo motor, which is controlled by a PLC. One end of the coiling needle (2) is connected to the core tube feeding waiting position (3), and a fixing block (301) is provided on one side of the core tube feeding waiting position (3), and the core tube (4) is placed on the fixing block (301); A shelf is provided on the other side of the core tube loading waiting position (3), on which a light source (5) and an industrial lens (6) are placed. A CCD camera (7) is also installed at the end of the industrial lens (6).

8. The core tube feeding and alignment device according to claim 7, characterized in that, The winding needles (2) are set to three positions and are arranged at 120° intervals on the main machine with the central axis of the winding structure (1) of the winding machine core as the center. The angle of the winding needles (2) is adjustable.

9. A core tube feeding and alignment device according to claim 7, characterized in that, The core tube loading waiting position (3) is L-shaped, the winding needle (2) is connected to the short side of the L-shape, and a shelf is fixedly connected to the long side of the L-shape. The industrial lens (6) is at the same level as the core tube (4).

Images