A full-tab electrode cell rubbing and flattening device based on CCD visual detection

Abstract

The utility model discloses a kind of full tab electric core kneading and flattening device based on CCD vision detection, comprising: rack, electric core conveying line, electric core positioning clamping mechanism, positive pole kneading and flattening mechanism, negative pole kneading and flattening mechanism, vision detection system and PLC control system;Vision detection system is used to collect the exposed size image of diaphragm between positive pole and negative pole tab of electric core before kneading and flattening and after kneading and flattening;PLC control system is electrically connected with electric core conveying line, electric core positioning clamping mechanism, positive pole kneading and flattening mechanism, negative pole kneading and flattening mechanism and vision detection system.This application detects the incoming size of each electric core in real time before kneading and flattening, and dynamically adjusts the feed amount of kneading and flattening head, realizes the accurate kneading and flattening of "one core one parameter", fundamentally overcomes the quality problem caused by equipment precision and incoming fluctuation.

Description

Technical Field

[0001] This utility model relates to the field of battery cell production and processing, and in particular to a flattening device for omnipolar battery cells based on CCD visual inspection. Background Technology

[0002] In lithium battery manufacturing, the flattening of the tabs in full-tab cells is a critical process, as its precision directly affects the cell's internal resistance, safety, and final yield. Traditional flattening devices typically use mechanical positioning followed by direct flattening, with a pre-set, fixed feed rate. However, in actual production, due to inherent positioning errors in the equipment and unavoidable dimensional fluctuations in the relative positions of the electrodes and separators in the incoming cells, this "one-size-fits-all" processing method struggles to guarantee the consistency of each cell's dimensions after flattening. This often results in under- or over-flattening, producing a large number of defective products and hindering improvements in production efficiency and product quality. Utility Model Content

[0003] The purpose of this invention is to provide a omnipolar battery cell flattening device based on CCD visual inspection to solve the above-mentioned problems.

[0004] According to one aspect of this utility model, a omnipolar battery cell flattening device based on CCD vision inspection is provided, comprising: a frame, a battery cell conveying line disposed on the frame, a battery cell positioning and clamping mechanism, a positive electrode flattening mechanism, a negative electrode flattening mechanism, a vision inspection system, and a PLC control system; the battery cell conveying line is used to convey the battery cell to below the battery cell positioning and clamping mechanism; the battery cell positioning and clamping mechanism is located between the positive electrode flattening mechanism and the negative electrode flattening mechanism, and is used to clamp and position the battery cell; the positive electrode flattening mechanism and the negative electrode flattening mechanism are respectively disposed corresponding to the positive and negative electrodes of the positioned battery cell; the vision inspection system includes a positive electrode CCD detection phase. The system includes a positive electrode CCD inspection camera and a negative electrode CCD inspection camera, which are respectively positioned above the positive electrode leveling mechanism and the negative electrode leveling mechanism. These cameras are used to acquire images of the exposed dimensions of the positive and negative electrode plates and the separator before and after leveling. The PLC control system is electrically connected to the battery cell conveying line, the battery cell positioning and clamping mechanism, the positive electrode leveling mechanism, the negative electrode leveling mechanism, and the vision inspection system. It receives image data from the vision inspection system, controls the feed amount of the positive and negative electrode leveling mechanisms based on the dimension data before leveling, and performs accuracy comparison and quality judgment based on the dimension data before and after leveling.

[0005] In some embodiments, the cell positioning and clamping mechanism includes a lifting cylinder, a clamping cylinder, and a clamping head; the lifting cylinder is mounted on the frame, the clamping cylinder is mounted at the output end of the lifting cylinder, the clamping cylinder includes two opposing output ends, and the clamping head is mounted on each of the two output ends of the clamping cylinder.

[0006] In some embodiments, the positive electrode flattening mechanism includes a first linear motor, a first motor, and a positive electrode flattening head. The first linear motor is disposed on one side of the battery cell conveying line, and a first motor is disposed at the output end of the first linear motor. The positive electrode flattening head is connected to the output end of the first motor through a first gear set. The first linear motor drives the positive electrode flattening head to translate, thereby moving closer to or away from the battery cell. The first motor drives the positive electrode flattening head to rotate, thereby flattening the positive electrode surface of the battery cell.

[0007] In some embodiments, the negative electrode flattening mechanism includes a second linear motor, a second motor, and a negative electrode flattening head. The second linear motor is disposed on one side of the battery cell conveying line, and a second motor is disposed at the output end of the second linear motor. The negative electrode flattening head is connected to the output end of the second motor through a second gear set. The second linear motor drives the negative electrode flattening head to translate, thereby moving closer to or away from the battery cell. The second motor drives the negative electrode flattening head to rotate, thereby flattening the negative electrode surface of the battery cell.

[0008] In some embodiments, the lifting cylinder and the clamping cylinder are electrically connected to the PLC control system.

[0009] In some embodiments, support frames are provided on both sides of the battery cell delivery line, and an adjustment block is provided on the top of the support frame. The adjustment block has an adjustment groove, and the positive CCD detection camera and the negative CCD detection camera are detachably connected to the adjustment groove by bolts.

[0010] In some implementations, the first linear motor and the first motor are electrically connected to the PLC control system.

[0011] In some embodiments, the second linear motor and the second motor are electrically connected to the PLC control system.

[0012] Compared with the prior art, the beneficial effects of this application are as follows:

[0013] This application achieves precise leveling of each battery cell with "one parameter per cell" by real-time detection of the incoming dimensions before leveling and dynamically adjusting the feed rate of the leveling head. This fundamentally overcomes quality problems caused by equipment precision and fluctuations in incoming materials. After leveling, visual inspection is performed again and compared with process parameters to automatically determine good products, forming an end-to-end quality monitoring closed loop. This significantly reduces the outflow of defective products and greatly reduces the intensity of manual intervention. A linear motor drives the leveling head, which, together with the battery cell positioning and clamping mechanism, ensures the stability and accuracy of the positioning and leveling process. The CCD camera position is adjustable, enhancing the system's adaptability to battery cells of different specifications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the battery cell positioning and clamping mechanism of this utility model.

[0017] Figure 4 This is a schematic diagram of the positive electrode flattening mechanism and the positive electrode CCD detection camera of this utility model. Detailed Implementation

[0018] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] refer to Figures 1 to 4This application provides a CCD vision inspection-based omnipolar battery cell flattening device, comprising: a frame, a battery cell conveying line mounted on the frame, a battery cell positioning and clamping mechanism 1, a positive electrode flattening mechanism 2, a negative electrode flattening mechanism 3, a vision inspection system, and a PLC control system; the battery cell conveying line is used to convey the battery cell to the area below the battery cell positioning and clamping mechanism 1; the battery cell positioning and clamping mechanism 1 is located between the positive electrode flattening mechanism 2 and the negative electrode flattening mechanism 3, and is used to clamp and position the battery cell; the positive electrode flattening mechanism 2 and the negative electrode flattening mechanism 3 are respectively positioned corresponding to the positive and negative electrodes of the battery cell being positioned; the vision inspection system includes a positive electrode CCD inspection camera 4 and a negative electrode flattening mechanism 3. A CCD inspection camera 5, specifically the positive and negative CCD inspection cameras 4 and 3, is positioned above the positive and negative electrode leveling mechanisms 2 and 3, respectively. These cameras are used to acquire images of the exposed dimensions of the positive and negative electrode plates and the separator before and after leveling. A PLC control system is electrically connected to the battery cell conveyor line, the battery cell positioning and clamping mechanism 1, the positive and negative electrode leveling mechanisms 2 and 3, and the vision inspection system. This system receives image data from the vision inspection system, controls the feed rate of the positive and negative electrode leveling mechanisms 2 and 3 based on the dimensions before leveling, and performs accuracy comparison and quality judgment based on the dimensions before and after leveling. Through the closed-loop linkage between the CCD vision inspection system and the PLC control system, real-time detection of the incoming dimensions of each battery cell and adaptive adjustment of the leveling process are achieved. This method upgrades traditional "fixed parameter" processing to personalized precision processing with a "one-cell-one-policy" approach, fundamentally overcoming the problems of insufficient or excessive leveling caused by equipment positioning accuracy errors and fluctuations in incoming material dimensions. Meanwhile, the re-inspection after kneading and data comparison form an end-to-end quality monitoring closed loop, which can automatically and quickly complete the judgment of good products, significantly improving the production yield and automation level.

[0020] In some embodiments, the battery cell positioning and clamping mechanism 1 includes a lifting cylinder 6, a clamping cylinder 7, and clamping heads 8. The lifting cylinder 6 is mounted on the frame, and the clamping cylinder 7 is located at the output end of the lifting cylinder 6. The clamping cylinder 7 includes two opposing output ends, and the clamping heads 8 are respectively mounted on the two output ends of the clamping cylinder 7. This achieves precise positioning and stable clamping of the battery cell. The lifting cylinder 6 can first adjust the clamping mechanism to the optimal height matching the thickness of the battery cell, and then the clamping cylinder 7 drives the two opposing clamping heads 8 to horizontally clamp the battery cell from both sides. This effectively avoids displacement or vibration of the battery cell during the flattening process, providing a stable reference position for subsequent high-precision flattening and ensuring processing consistency.

[0021] In some embodiments, the positive electrode leveling mechanism 2 includes a first linear motor 9, a first motor 10, and a positive electrode leveling head 11. The first linear motor 9 is located on one side of the battery cell conveying line, and the output end of the first linear motor 9 is connected to the first motor 10. The positive electrode leveling head 11 is connected to the output end of the first motor 10 via a first gear set 12. The first linear motor 9 drives the positive electrode leveling head 11 to translate, thereby moving closer to or away from the battery cell. The first motor 10 drives the positive electrode leveling head 11 to rotate, thereby leveling the positive electrode surface of the battery cell. The dual-drive design of the first linear motor 9 and the first motor 10 has a clear division of labor and precise control. The first linear motor 9 is responsible for driving the entire leveling head assembly to translate precisely and control the leveling feed depth; the first motor 10 drives the leveling head to rotate at high speed through the gear set to perform the leveling operation. This design, which decouples translational and rotational motions, allows the PLC control system to independently and precisely control the feed amount of the leveling head, thereby achieving precise control of the positive electrode leveling dimensions.

[0022] In some embodiments, the negative electrode leveling mechanism 3 includes a second linear motor, a second motor, and a negative electrode leveling head. The second linear motor is located on one side of the battery cell conveyor line, and a second motor is installed at the output end of the second linear motor. The negative electrode leveling head is connected to the output end of the second motor via a second gear set. The second linear motor drives the negative electrode leveling head to translate, thereby moving it closer to or away from the battery cell. The second motor drives the negative electrode leveling head to rotate, thereby leveling the negative electrode surface of the battery cell. Corresponding to the positive electrode leveling mechanism 2, the negative electrode leveling mechanism 3 also adopts a scheme of separate driving of the linear motor and the rotary motor. This design ensures that the positive and negative electrode leveling mechanisms 3 can independently execute different feed rates according to the real-time dimensions detected by their respective CCD cameras, achieving asymmetrical and precise leveling. This solves the problem that the incoming dimensions of the positive and negative electrodes of the battery cell may be inconsistent, ensuring the synchronous and optimal leveling quality at both ends of the battery cell.

[0023] In some embodiments, the lifting cylinder 6 and the clamping cylinder 7 are electrically connected to the PLC control system.

[0024] In some embodiments, support frames 13 are respectively provided on both sides of the battery cell delivery line, and an adjustment block 14 is provided on the top of the support frame 13. The adjustment block 14 has an adjustment groove, and the positive CCD detection camera 4 and the negative CCD detection camera 5 are detachably connected to the adjustment groove by bolts. Through the cooperation of the support frame 13, the adjustment block 14 with the adjustment groove, and the bolts, the position of the CCD camera is adjustable and detachable. This allows the vision system to flexibly adapt to battery cells of different sizes and specifications. By simply adjusting the position of the camera, the field of view and focal length can be kept at the optimal state, ensuring the clarity of image acquisition and the accuracy of measurement data, greatly enhancing the versatility and ease of maintenance of the entire device.

[0025] In some embodiments, the first linear motor 9 and the first motor 10 are electrically connected to the PLC control system. Connecting the first linear motor 9 and the first motor 10 to the PLC control system ensures that the translational feeding and rotational movements of the positive electrode flattening head 11 are completely controlled by the central processing unit. The PLC can calculate and issue commands in real time based on the detection data from the positive electrode CCD, controlling the precise displacement of the linear motors and their start / stop speeds, thus achieving digital, intelligent, and precise control of the positive electrode flattening process.

[0026] In some implementations, the second linear motor and the second motor are electrically connected to the PLC control system. Electrically connecting the second linear motor and the second motor to the PLC gives the system the ability to independently control the negative electrode leveling process. Based on real-time detection data of the negative electrode, the PLC can independently calculate and drive the second linear motor and the second motor, decoupling the negative electrode leveling process from the positive electrode. This achieves independent closed-loop control of the battery cell's positive and negative electrode leveling parameters, further ensuring the overall quality of the final product.

[0027] After the battery cell is conveyed by the battery cell conveyor line to the area below the battery cell positioning and clamping mechanism 1, the battery cell positioning and clamping mechanism 1 clamps and positions the battery cell. Subsequently, the positive CCD detection camera 4 and the negative CCD detection camera 5 take pictures of the battery cell before flattening, and upload the image of the exposed electrode size to the PLC control system. The PLC control system calculates the required feed amount of the positive flattening mechanism 2 and the negative flattening mechanism 3 based on this data, and controls the first linear motor 9 in the positive flattening mechanism 2 and the second linear motor in the negative flattening mechanism 3 to drive the positive flattening head 11 and the negative flattening head to move closer to the battery cell with precise displacement. At the same time, the first motor 10 and the second motor drive the flattening head to rotate, completing the flattening operation. After flattening, the positive CCD detection camera 4 and the negative CCD detection camera 5 take pictures again, and feed back the flattened size data to the PLC control system. By comparing the size data before and after flattening, the PLC control system automatically completes the accuracy comparison and good product judgment, thereby realizing closed-loop quality control.

[0028] This application achieves precise leveling of each battery cell with "one parameter per cell" by real-time detection of the incoming dimensions before leveling and dynamic adjustment of the feeding amount of the leveling head. This fundamentally overcomes quality problems caused by equipment precision and fluctuations in incoming materials. After leveling, visual inspection is performed again and compared with process parameters to automatically determine good products, forming an end-to-end quality monitoring closed loop. This significantly reduces the outflow of defective products and greatly reduces the intensity of manual intervention. A linear motor drives the leveling head, which, together with the battery cell positioning and clamping mechanism 1, ensures the stability and accuracy of the positioning and leveling process. The CCD camera position is adjustable, enhancing the system's adaptability to battery cells of different specifications.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A device for flattening omnipolar battery cells based on CCD visual inspection, characterized in that, include: The system includes a frame, a cell conveying line mounted on the frame, a cell positioning and clamping mechanism, a positive electrode flattening mechanism, a negative electrode flattening mechanism, a vision inspection system, and a PLC control system. The cell delivery line is used to deliver the cells to the area below the cell positioning and clamping mechanism; The cell positioning and clamping mechanism is located between the positive electrode flattening mechanism and the negative electrode flattening mechanism, and is used to hold and position the cell. The positive and negative flattening mechanisms are respectively set for the positive and negative poles of the battery cell being positioned. The visual inspection system includes a positive CCD inspection camera and a negative CCD inspection camera. The positive CCD inspection camera and the negative CCD inspection camera are respectively positioned above the positive and negative flattening mechanisms, and are used to acquire images of the exposed dimensions of the positive and negative electrode plates of the battery cell from the separator before and after flattening. The PLC control system is electrically connected to the battery cell conveying line, the battery cell positioning and clamping mechanism, the positive electrode leveling mechanism, the negative electrode leveling mechanism, and the vision inspection system. It is used to receive image data from the vision inspection system, control the feed amount of the positive electrode leveling mechanism and the negative electrode leveling mechanism according to the size data before leveling, and perform accuracy comparison and good product judgment based on the size data before and after leveling.

2. The omnipolar battery cell flattening device based on CCD visual inspection according to claim 1, characterized in that, The battery cell positioning and clamping mechanism includes a lifting cylinder, a clamping cylinder, and a clamping head; the lifting cylinder is mounted on the frame, the clamping cylinder is mounted at the output end of the lifting cylinder, the clamping cylinder includes two opposing output ends, and the clamping head is mounted on each of the two output ends of the clamping cylinder.

3. The omnipolar battery cell flattening device based on CCD visual inspection according to claim 1, characterized in that, The positive electrode flattening mechanism includes a first linear motor, a first motor, and a positive electrode flattening head. The first linear motor is located on one side of the battery cell conveying line, and the output end of the first linear motor is equipped with a first motor. The positive electrode flattening head is connected to the output end of the first motor through a first gear set. The first linear motor drives the positive electrode flattening head to move horizontally, thereby moving closer to or away from the battery cell. The first motor drives the positive electrode flattening head to rotate, thereby flattening the positive electrode surface of the battery cell.

4. The omnipolar battery cell flattening device based on CCD visual inspection according to claim 1, characterized in that, The negative electrode flattening mechanism includes a second linear motor, a second motor, and a negative electrode flattening head. The second linear motor is located on one side of the battery cell conveying line, and a second motor is provided at the output end of the second linear motor. The negative electrode flattening head is connected to the output end of the second motor through a second gear set. The second linear motor drives the negative electrode flattening head to move horizontally, thereby moving closer to or away from the battery cell. The second motor drives the negative electrode flattening head to rotate, thereby flattening the negative electrode surface of the battery cell.

5. The omnipolar battery cell flattening device based on CCD visual inspection according to claim 1, characterized in that, Support frames are provided on both sides of the cell delivery line, and an adjustment block is provided on the top of the support frame. The adjustment block has an adjustment groove, and the positive CCD detection camera and the negative CCD detection camera are detachably connected to the adjustment groove by bolts.

6. The omnipolar battery cell flattening device based on CCD visual inspection according to claim 2, characterized in that, The lifting cylinder and the clamping cylinder are electrically connected to the PLC control system.

7. The omnipolar battery cell flattening device based on CCD visual inspection according to claim 3, characterized in that, The first linear motor and the first motor are electrically connected to the PLC control system.

8. The omnipolar battery cell flattening device based on CCD visual inspection according to claim 4, characterized in that, The second linear motor and the second motor are electrically connected to the PLC control system.

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