Water-based battery pole piece defect detection and sorting device

Abstract

The utility model relates to water system battery pole piece defect detection and sorting device, including conveyer belt, detection camera and sorting air blower, the conveyer belt of electrode piece is still provided with auxiliary assembly on the convey path, the auxiliary assembly includes front guide roller, rear guide roller and middle guide roller, the middle guide roller sets up below front guide roller and rear guide roller and is located between both, the conveyer belt passes above front guide roller, below middle guide roller, above rear guide roller in proper order to form a recess area on the conveying surface, the output end of sorting air blower faces recess area. The utility model forms recess area through the special layout of front guide roller, rear guide roller and middle guide roller, provides the space from the below of sorting air blower to electrode piece, solves the problem that the traditional plane conveys when airflow is easy to be blocked by conveyer belt, the poor problem of sorting effect, lets the defective electrode piece can be accurately blown away from the conveyer belt.

Description

Technical Field

[0001] This utility model belongs to the field of electrode detection technology, and specifically relates to a device for detecting and sorting defects in aqueous battery electrodes. Background Technology

[0002] In the production process of aqueous batteries, the quality of the electrodes directly affects the battery's performance and safety. Therefore, defect detection and sorting of the electrodes are crucial steps. Currently, most electrode defect detection and sorting devices used in the industry employ a planar conveyor method. This involves the electrode sheets moving on a flat conveyor belt, where a detection camera identifies defects, and a sorting device separates the defective electrodes using air blowing or mechanical prying.

[0003] However, this traditional planar conveyor sorting method has significant shortcomings. On the one hand, since the conveyor belt is always below and fully supports the electrode plates, when using air blowing for sorting, the airflow needs to pass through the gap between the electrode plate and the conveyor belt to act on the electrode plate. This results in large airflow energy loss, making it difficult to effectively overcome the friction between the electrode plate and the conveyor belt. Consequently, the sorting success rate is low, and some defective electrode plates may not be blown away and may be mixed into qualified products, affecting product quality. Utility Model Content

[0004] This utility model addresses the problems of existing technologies by providing a device for detecting and sorting defects in the electrode sheets of aqueous batteries. The specific technical solution is as follows:

[0005] A water-based battery electrode defect detection and sorting device includes a conveyor belt, a detection camera, and a sorting air blower. An auxiliary component is also provided on the conveying path of the electrode sheet. The auxiliary component includes a front guide roller, a rear guide roller, and a middle guide roller. The middle guide roller is located below and between the front and rear guide rollers. The conveyor belt passes over the front guide roller, below the middle guide roller, and above the rear guide roller in sequence to form a recessed area on the conveying surface.

[0006] The output end of the sorting blower faces the recessed area.

[0007] As a further technical solution of this utility model, the front guide roller and the rear guide roller are on the same horizontal plane.

[0008] As a further technical solution of this utility model, there is a gap between the front guide roller and the rear guide roller, and the gap between them is smaller than the diameter of the middle guide roller so that the recessed area forms a triangular structure.

[0009] As a further technical solution of this utility model, a temporary support roller is provided in the recessed area. The upper edge of the temporary support roller is on the same plane as the conveying surface. The ends of the temporary support roller and the middle guide roller are coaxially connected with synchronous pulleys. A synchronous belt is wound between the two sets of synchronous pulleys. The temporary support roller and the middle guide roller rotate synchronously through the synchronous pulleys and the synchronous belt. The surface linear velocity of the temporary support roller is the same as the traveling speed of the electrode sheet.

[0010] The beneficial effects of this utility model are as follows:

[0011] (1) The special layout of the front guide roller, the rear guide roller and the middle guide roller forms a recessed area, which provides space for the sorting air blower to act on the electrode sheet from below. This solves the problem that the airflow is easily blocked by the conveyor belt and the sorting effect is poor when the traditional flat conveyor is used, and allows the defective electrode sheet to be accurately blown away from the conveyor belt.

[0012] (2) Setting the front guide roller and the rear guide roller on the same horizontal plane eliminates the height difference in the conveying path and avoids the electrode sheet from shifting or wrinkling; at the same time, controlling the interval between the front guide roller and the rear guide roller to be smaller than the diameter of the middle guide roller makes the recessed area form a triangular structure, reduces the deformation of the electrode sheet, and ensures stable conveying.

[0013] (3) A temporary support roller is set in the recessed area, and its synchronous rotation with the central guide roller is achieved through a synchronous wheel and a synchronous belt. This ensures that the surface linear velocity of the temporary support roller is consistent with the travel speed of the electrode sheet, which not only prevents the electrode sheet from sagging and deforming due to gravity, but also avoids damage to the electrode sheet due to friction, further improving the reliability of the device. Attached Figure Description

[0014] Figure 1 This diagram shows the overall structure of the water-based battery electrode defect detection and sorting device.

[0015] Figure 2 A schematic diagram of the auxiliary component is shown.

[0016] Legend:

[0017] 100. Conveyor belt; 200. Inspection camera; 300. Sorting air blower; 400. Auxiliary components; 410. Front guide roller; 420. Rear guide roller; 430. Middle guide roller; 440. Recessed area; 450. Temporary support roller; 460. Synchronous pulley; 470. Synchronous belt. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0019] Figure 1This diagram shows the overall structure of the water-based battery electrode defect detection and sorting device. Figure 2 A schematic diagram of the auxiliary component (400) is shown.

[0020] Figure 1 The device for detecting and sorting defects in the electrode sheets of an aqueous battery includes a conveyor belt 100, a detection camera 200, and a sorting air blower 300. The conveyor belt 100 is used to transport the electrode sheets. The detection camera 200 and the sorting air blower 300 are arranged sequentially along the transport path of the electrode sheets. The detection camera 200 is used to detect defects in the electrode sheets, and the sorting air blower 300 is used to sort the electrode sheets. The detection camera 200 is communicatively connected to the sorting air blower 300. When a defect is detected in the electrode sheet, the detection camera 200 can emit an electrical signal. After receiving the electrical signal, the sorting air blower 300 can sort out the electrode sheets with defects.

[0021] The electrode sheets are continuously conveyed forward by the conveyor belt 100. When they pass the inspection camera 200, the inspection camera performs high-speed imaging and image analysis on the electrode sheets, identifying those with defects such as cracks, bulges, and missing coatings. Once a defect is detected, the inspection camera 200 immediately sends an electrical signal to the sorting air blower 300, replacing manual inspection and sorting. This not only improves inspection efficiency but also avoids fatigue errors caused by manual visual inspection, thus enhancing the screening quality of aqueous battery electrode sheets.

[0022] Figure 2 In the process, an auxiliary component 400 is also provided on the conveying path of the electrode sheet. The auxiliary component 400 includes a front guide roller 410, a rear guide roller 420, and a middle guide roller 430. The middle guide roller 430 is located below and between the front guide roller 410 and the rear guide roller 420. The conveyor belt 100 passes over the front guide roller 410, below the middle guide roller 430, and above the rear guide roller 420 in sequence to form a recessed area 440 on the conveying surface. The output end of the sorting blower 300 faces the auxiliary component 400. When a defective electrode sheet passes through the recessed area 440 formed by the auxiliary component 400, the output end of the sorting blower 300 can drive the electrode sheet from bottom to top through the recessed area 440 to detach it from the surface of the conveyor belt 100, thereby achieving sorting.

[0023] The auxiliary component 400, through the positioning design of the three guide rollers, creates a downwardly recessed area on the conveyor belt 100. When the defective electrode sheet passes through this area, it is no longer fully supported by the conveyor belt 100, forming a suspended space. The airflow from the sorting blower 300 is precisely injected upward from below the recessed area 440, using the impact force of the airflow to overcome the friction between the electrode sheet and the conveyor belt 100, causing the defective sheet to detach from the conveyor path. The design of the recessed area 440 provides an effective working space for the sorting blower 300, avoiding the problem of airflow being blocked by the conveyor belt in traditional planar conveying. At the same time, the recessed structure only changes the shape of the conveyor belt in a local area, without affecting the overall stability of the conveying.

[0024] See also Figure 2 The front guide roller 410 and the rear guide roller 420 are on the same horizontal plane; in this way, it can be ensured that the conveying surface in front of the recessed area 440 and the conveying surface behind the recessed area 440 are at the same height, avoiding the step-like height difference of the conveying surface and ensuring stable conveying.

[0025] The axes of the front guide roller 410 and the rear guide roller 420 are kept on the same horizontal line, ensuring that the conveyor surface of the conveyor belt 100 is at a consistent height before entering and after leaving the recessed area 440. When the electrode sheet passes through the recessed area 440, it only undergoes a brief downward bending and resetting process, preventing tilting or jamming due to sudden height changes. This eliminates height differences in the conveying path, prevents the electrode sheet from shifting, wrinkling, or getting stuck during conveying, and ensures that the electrode sheet always passes through the detection and sorting areas in a flat state.

[0026] See also Figure 2 There is a gap between the front guide roller 410 and the rear guide roller 420, and the gap between them is smaller than the diameter of the middle guide roller 430 so that the recessed area 440 forms a triangular structure; further reducing the gap between the front guide roller 410 and the rear guide roller 420 reduces the gap between the front conveying surface and the rear conveying surface, ensuring that the electrode sheet passes smoothly through the area where the recessed area 440 is located.

[0027] The distance between the front guide roller 410 and the rear guide roller 420 is smaller than the diameter of the middle guide roller 430, causing the conveyor belt 100 to form a triangular recessed structure between the three rollers. This compact triangular design shortens the dwell path of the electrode sheet in the recessed area 440, reduces the deformation time of the electrode sheet due to bending, and the structure of the triangular recessed area 440 makes the bending amplitude of the electrode sheet small and the transition smooth when passing through, avoiding electrode sheet deformation or excessive friction with the conveyor belt 100 due to excessive path length; at the same time, the compact spacing design ensures the continuity of movement of the electrode sheet when entering and leaving the recessed area, further improving the conveying stability.

[0028] See also Figure 2A temporary support roller 450 is provided in the recessed area 440. The upper edge of the temporary support roller 450 is on the same plane as the conveying surface. The ends of the temporary support roller 450 and the middle guide roller 430 are coaxially connected to synchronous pulleys 460. A synchronous belt 470 is wound between the two sets of synchronous pulleys 460. The temporary support roller 450 and the middle guide roller 430 rotate synchronously through the synchronous pulleys 460 and the synchronous belt 470. The surface linear velocity of the temporary support roller 450 is the same as the traveling speed of the electrode sheet.

[0029] A temporary support roller 450 is installed in the recessed area 440, with its top flush with the surface of the conveyor belt 100. It provides auxiliary support for the passing electrode sheets. The synchronous pulley 460 and synchronous belt 470 synchronize the rotation of the temporary support roller 450 with that of the central guide roller 430, so that the rotational speed of the temporary support roller 450 automatically matches the running speed of the conveyor belt 100, ensuring that its surface linear velocity is consistent with the moving speed of the electrode sheets and avoiding relative friction. The temporary support roller 450 prevents the electrode sheets from deforming due to gravity in the recessed area 440, and the synchronous rotation design avoids frictional damage between the support roller and the electrode sheets, protecting the coating on the electrode sheet surface. At the same time, the support function keeps the electrode sheets flat in the recessed area 440, ensuring that the airflow of the sorting blower 300 can accurately act on the defect location, improving sorting reliability.

[0030] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A device for detecting and sorting defects in aqueous battery electrode sheets, comprising a conveyor belt (100), a detection camera (200), and a sorting air blower (300), characterized in that: An auxiliary component (400) is also provided on the conveying path of the electrode sheet. The auxiliary component (400) includes a front guide roller (410), a rear guide roller (420), and a middle guide roller (430). The middle guide roller (430) is located below the front guide roller (410) and the rear guide roller (420) and between them. The conveyor belt (100) passes over the front guide roller (410), below the middle guide roller (430), and above the rear guide roller (420) in sequence to form a recessed area (440) on the conveying surface. The output end of the sorting blower (300) faces the recessed area (440).

2. The water-based battery electrode defect detection and sorting device according to claim 1, characterized in that: The front guide roller (410) and the rear guide roller (420) are on the same horizontal plane.

3. The water-based battery electrode defect detection and sorting device according to claim 2, characterized in that: The front guide roller (410) and the rear guide roller (420) are spaced apart, and the space between them is smaller than the diameter of the middle guide roller (430) so that the recessed area (440) forms a triangular structure.

4. The water-based battery electrode defect detection and sorting device according to claim 3, characterized in that: A temporary support roller (450) is provided in the recessed area (440). The upper edge of the temporary support roller (450) is on the same plane as the conveying surface. The ends of the temporary support roller (450) and the middle guide roller (430) are coaxially connected to synchronous pulleys (460). A synchronous belt (470) is wound between the two sets of synchronous pulleys (460). The temporary support roller (450) and the middle guide roller (430) rotate synchronously through the synchronous pulleys (460) and the synchronous belt (470). The surface linear velocity of the temporary support roller (450) is the same as the traveling speed of the electrode sheet.

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