Pole piece detection device

Abstract

The utility model discloses a pole piece detection device which comprises a mounting frame and a visual inspection mechanism, a conveyor belt is arranged on the mounting frame, the conveyor belt is used for conveying battery pole pieces, and a plurality of adsorption holes used for being connected with a negative pressure air source are formed in the conveyor belt; and the visual detection mechanism is arranged on the mounting frame and is positioned above the conveying belt. According to the utility model, the plurality of adsorption holes used for being connected with the negative pressure air source are formed in the conveying belt, so that the pole piece can be effectively fixed, the position deviation of the pole piece can be prevented, the detection of the visual detection mechanism is facilitated, and the detection precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an electrode detection device. Background Technology

[0002] In the lithium battery production process, the quality of the electrodes directly affects the battery's performance and safety. Electrode inspection is a critical step in the production process, requiring the testing of parameters such as the electrode's dimensional accuracy, tab position, and shape (e.g., whether there is edge folding or deformation).

[0003] Currently, existing electrode inspection devices typically employ visual inspection technology, using cameras to photograph and analyze images of the electrodes on a conveyor belt. However, in actual inspection processes, the electrodes may shift position due to conveyor belt vibration, the electrode's own flexibility, or poor adhesion, affecting inspection accuracy. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an electrode detection device to solve the problems of electrode displacement and uneven surface that occur easily during detection by existing electrode detection devices.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an electrode detection device, which includes a mounting frame and a visual inspection mechanism. The mounting frame is provided with a conveyor belt for conveying battery electrodes. The conveyor belt has multiple adsorption holes for connecting to a negative pressure gas source. The visual inspection mechanism is disposed on the mounting frame and is located above the conveyor belt.

[0006] Furthermore, in the electrode inspection device of this utility model, the visual inspection mechanism includes a support component and multiple cameras. The support component is fixedly connected to the mounting frame, and the multiple cameras are mounted on the support component.

[0007] Furthermore, in the electrode testing device of this utility model, the support component includes a first track and two second tracks. The first track is fixedly connected to the mounting frame. The first track extends along a first horizontal direction, and the second track extends along a second horizontal direction. The two second tracks are slidably disposed on the first track.

[0008] Furthermore, in the electrode detection device of this utility model, the number of cameras is four, and two cameras are slidably arranged on each of the second tracks.

[0009] Furthermore, the electrode testing device of this utility model also includes a driving device and a pressing mechanism. The driving device is disposed on the mounting frame and is connected to the pressing mechanism in a transmission manner. The pressing mechanism is slidably disposed on the mounting frame in the vertical direction and is located above the conveyor belt.

[0010] Furthermore, in the electrode testing device of this utility model, the pressing mechanism includes a transmission component, a connecting component, and a pressing plate. One end of the transmission component is connected to the driving device, the other end of the transmission component is connected to the connecting component, and the connecting component is connected to the pressing plate.

[0011] Furthermore, in the electrode detection device of this utility model, the transmission assembly includes a first rotating component and a crank. The first rotating component includes a rotating shaft and an eccentric shaft. One end of the rotating shaft is connected to the output shaft of the drive mechanism, and the other end of the rotating shaft is fixedly connected to the eccentric shaft. The rotation center lines of the rotating shaft and the eccentric shaft are eccentrically arranged. One end of the crank is rotatably connected to the eccentric shaft, and the other end of the crank is connected to the connecting assembly.

[0012] Furthermore, in the electrode testing device of this utility model, the connecting assembly includes a first connecting member and a second connecting member, wherein the first connecting member is connected to the crank and the second connecting member respectively.

[0013] Furthermore, the electrode testing device of this utility model also includes a first bearing and a second bearing. One end of the crank is rotatably connected to the eccentric shaft through the first bearing, and the other end of the crank is connected to the first connecting member through the second bearing.

[0014] Furthermore, in the electrode detection device of this utility model, the second connecting member is provided with a protrusion, the protrusion is provided with a sliding groove, and the mounting bracket is provided with a slider, wherein the slider is slidably disposed in the sliding groove.

[0015] The beneficial effects of this utility model are as follows: This utility model designs an electrode inspection mechanism, which has a conveyor belt on a mounting frame, and multiple adsorption holes for connecting a negative pressure gas source are opened on the conveyor belt. When the electrode is transported on the conveyor belt, the electrode can be vacuum-adsorbed through the adsorption holes (in conjunction with a corresponding negative pressure system or negative pressure design), preventing the electrode from sliding due to vibration during the inspection process. This effectively fixes the electrode, ensures the accuracy of the electrode position, and facilitates the visual inspection mechanism to photograph the size of the electrode, determine whether the electrode size is qualified, and simultaneously confirm whether the tabs in the electrode are folded, thus realizing the inspection of the electrode. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the electrode detection device described in this utility model from one perspective under one embodiment.

[0017] Figure 2 This is a schematic diagram of the electrode detection device described in this utility model from another perspective under one embodiment.

[0018] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the electrode testing device.

[0019] Figure 4 for Figure 3 A magnified view of part A of the electrode testing device shown.

[0020] Figure 5 for Figure 1 The diagram shows the structure of the electrode testing device with the mounting plate hidden.

[0021] Figure 6 This is a schematic diagram of the pressing mechanism in one embodiment of the electrode testing device of this utility model.

[0022] Figure 7 This is an exploded view of the pressing mechanism in the electrode testing device of this utility model from one perspective under one embodiment.

[0023] Figure 8 This is an exploded view of the pressing mechanism in the electrode testing device of this utility model from another perspective under one embodiment.

[0024] Figure 9 This is a schematic diagram of the crank in one embodiment of the electrode testing device of this utility model.

[0025] Figure 10 This is an exploded view of the crank in one embodiment of the electrode testing device of this utility model.

[0026] Figure 11 This is a schematic diagram of the visual inspection mechanism in one embodiment of the electrode inspection device of this utility model.

[0027] Label Explanation:

[0028] 1. Mounting frame; 11. Operating table; 12. Mounting plate; 13. Conveyor belt; 14. Adsorption hole; 15. First bearing; 16. Second bearing; 17. Slider;

[0029] 2. Visual inspection mechanism; 21. Support components; 22. First track; 23. Second track; 24. Camera;

[0030] 3. Pressing mechanism; 31. Transmission assembly; 311. First rotating component; 312. Crank; 313. Rotating shaft; 314. Eccentric shaft; 32. Connecting assembly; 321. First connecting component; 322. Second connecting component; 323. Slide groove; 324. Connecting column; 33. Pressure plate;

[0031] 4. Drive unit. Detailed Implementation

[0032] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0033] Please refer to Figures 1 to 11 This utility model provides an electrode detection device, which includes a mounting frame 1 and a vision detection mechanism 2. The mounting frame is provided with a conveyor belt 13 for conveying battery electrodes. The conveyor belt 13 is provided with a plurality of adsorption holes 14 for connecting to a negative pressure gas source. The vision detection mechanism 2 is disposed on the mounting frame 1 and is located above the conveyor belt 13.

[0034] As described above, the beneficial effects of this utility model are as follows: This utility model designs an electrode inspection mechanism, which has a conveyor belt on a mounting frame, and multiple adsorption holes for connecting a negative pressure gas source are opened on the conveyor belt. When the electrode is transported on the conveyor belt, the electrode can be vacuum-adsorbed through the adsorption holes (in conjunction with a corresponding negative pressure system or negative pressure design), preventing the electrode from sliding due to vibration during the inspection process. This effectively fixes the electrode, ensures the accuracy of the electrode position, and facilitates the visual inspection mechanism to photograph the size of the electrode, determine whether the electrode size is qualified, and simultaneously confirm whether the tabs in the electrode are folded over, thus realizing the inspection of the electrode.

[0035] Furthermore, in the electrode detection device of this utility model, the visual inspection mechanism 2 includes a support component 21 and a plurality of cameras 24. One end of the support component 21 is connected to the mounting frame 1, and the plurality of cameras 24 are disposed on the support component 21.

[0036] As described above, the combination design of the support component 21 and multiple cameras 24 allows the multiple cameras 24 to be distributed in different positions, enabling the cameras 24 to flexibly cover different detection areas, acquire electrode images from multiple angles, reduce detection blind spots, and improve the comprehensiveness of detection of electrode size, electrode tab position and shape, etc.

[0037] Furthermore, in the electrode testing device of this utility model, the support component 21 includes a first track 22 and two second tracks 23. The first track 22 is connected to the mounting frame 1. The first track 22 extends along a first horizontal direction (i.e., the horizontal width direction), and the second track 23 extends along a second horizontal direction (i.e., the horizontal length direction). The two second tracks 23 are slidably disposed on the first track 22.

[0038] As described above, the slidable connection structure between the first track 22 and the second track 23 allows the second track 23 to slide on the first track 22, thereby moving the camera 24 located on the second track 23 and adjusting the position of the camera 24 in the first horizontal direction to adapt to the detection requirements of different sized electrodes and enhance the versatility of the device.

[0039] Furthermore, in the electrode detection device described in this utility model, the number of cameras 24 is four, with two cameras 24 slidably disposed on each of the second tracks 23. In practical applications, corresponding infrared detection modules can also be set to replace the cameras for detection, which is not limited here.

[0040] As described above, the four cameras 24 are arranged in two groups on two second tracks 23. Through multi-point synchronous detection, image data of multiple key areas of the electrode sheet can be quickly acquired, improving detection efficiency and reducing the risk of missed detections. Simultaneously, since the cameras 24 can slide on the second tracks 23, their positions can be adjusted in the second horizontal direction to adapt to the detection needs of electrodes of different sizes, enhancing the versatility of the device. It should be noted that the specific shooting functions of the multiple cameras 24 in this invention can be set according to actual conditions. For example, two of the four cameras 24 can be used to capture the size of the electrode sheet, while the remaining two can be used to capture whether the tabs in the electrode sheet have flipped edges; this is not limited here.

[0041] Based on the specific structural design of the support component 21, the camera 24 can move in both the first horizontal direction and the second horizontal direction to adjust its position. This allows the camera 24 to effectively adjust its position on a two-dimensional plane, covering the detection needs of different areas of the electrode, reducing blind spots, and improving the comprehensiveness of detection of electrode size, tab position and shape (such as flanging and deformation).

[0042] To further press the electrode holder and prevent its positional shift during the testing process, a corresponding pressing mechanism can be set up to further press the electrode holder. In practical applications, the specific structure of the pressing mechanism can be selected according to the actual situation. For example, multiple pneumatic cylinders and pressing heads can be set up, each pressing head controlled by an independent pneumatic cylinder, and the air pressure can be adjusted to adapt to different electrode thicknesses and flexibility. In addition, this utility model can also be equipped with an eccentric mechanism and a transmission mechanism to form a corresponding pressing mechanism, as follows:

[0043] Furthermore, the electrode testing device of this utility model also includes a driving device and a pressing mechanism. The driving device is disposed on the mounting frame and is connected to the pressing mechanism in a transmission manner. The pressing mechanism is slidably disposed on the mounting frame in the vertical direction and is located above the conveyor belt.

[0044] As described above, after the electrode sheets are processed, it is necessary to inspect whether the produced electrode sheets are qualified. During the inspection process, the electrode sheets can be vacuum-adsorbed through the adsorption holes 14 (in conjunction with a corresponding vacuum system or vacuum design) to prevent them from sliding due to vibration during the inspection process. To further hold the electrode sheets and prevent them from sliding, this utility model also provides a corresponding pressing mechanism. Since the pressing mechanism 3 can slide up and down, it can apply pressure briefly when the electrode sheet reaches the inspection position to further fix the electrode sheet and flatten its surface, which is helpful for subsequent inspection by a visual inspection mechanism. In summary, based on the cooperation of the adsorption holes 14 and the pressing mechanism 3, the electrode sheets can be effectively held. Therefore, the size of the electrode sheets can be effectively photographed by a visual inspection mechanism while holding the electrode sheets to determine whether the electrode sheet size is qualified, and at the same time to confirm whether the tabs in the electrode sheets have turned over.

[0045] In other words, vacuum adsorption of the electrode sheet is achieved through multiple adsorption holes 14 in the middle area of ​​the conveyor belt 13. Combined with the up-and-down sliding pressing of the pressing mechanism 3, this effectively solves the problems of uneven surface of the electrode sheet during the testing process and displacement caused by vibration or weak adsorption, thus improving testing accuracy. In practical applications, since the pressing mechanism 3 can periodically slide up and down, it can be synchronized with the electrode sheet's conveying frequency to ensure that the pressing action of the pressing mechanism 3 is synchronized with the electrode sheet's conveying, facilitating testing.

[0046] Furthermore, in the electrode testing device of this utility model, the pressing mechanism 3 includes a transmission component 31, a connecting component 32, and a pressing plate 33. The transmission component 31 is connected to the driving device 4, one end of the connecting component 32 is connected to the transmission component 31, and the other end of the connecting component 32 is connected to the pressing plate 33.

[0047] As can be seen from the above description, by setting the corresponding pressure plate 33, the downward pressing action of the pressure plate 33 can be controlled in the future, ensuring that the battery electrode is held by the pressure plate 33 during the testing process, which facilitates the testing.

[0048] Furthermore, in the electrode detection device of this utility model, the transmission assembly 31 includes a first rotating member 311 and a crank 312. The first rotating member 311 includes a rotating shaft portion 313 and an eccentric shaft portion 314. One end of the rotating shaft portion 313 is connected to the output shaft of the drive mechanism, and the other end of the rotating shaft portion 313 is fixedly connected to the eccentric shaft portion 314. The rotation center lines of the rotating shaft portion 313 and the eccentric shaft portion 314 are eccentrically arranged. One end of the crank 312 is rotatably connected to the eccentric shaft portion 314, and the other end of the crank 312 is connected to the connecting assembly 32.

[0049] In practical applications, when the output shaft of the drive mechanism rotates, it drives the aforementioned rotating shaft 313 and eccentric shaft 314 to rotate around their own shaft axis. Since the rotation centers of the eccentric shaft 314 and the rotating shaft 313 are offset by a certain distance (eccentricity), that is, the eccentric shaft 314 and the rotating shaft 313 are eccentrically set, when the rotating shaft 313 rotates, the motion trajectory of the eccentric shaft 314 is circular. The crank 312 is connected to the eccentric shaft 314 through the corresponding bearing, converting the circular motion into up-and-down reciprocating motion, thereby driving the pressure plate 33 to move up and down reciprocally in the vertical height direction.

[0050] In other words, through the cooperation of the drive device 4 (such as a motor) and the transmission component 31, the rotational motion of the motor output shaft can be converted into linear motion, realizing the periodic up-and-down movement of the pressure plate 33 to press the electrode sheet, avoiding the problem of unstable pressing caused by vibration, etc. At the same time, this utility model can also match the periodic up-and-down movement of the pressure plate 33 with the electrode sheet conveying frequency.

[0051] Furthermore, in the electrode detection device of this utility model, the connecting component 32 includes a first connecting member 321 and a second connecting member 322, wherein the first connecting member 321 is connected to the crank 312 and the second connecting member 322 respectively.

[0052] Furthermore, the electrode testing device of this utility model also includes a first bearing 15 and a second bearing 16. One end of the crank 312 is rotatably connected to the eccentric shaft 314 through the first bearing 15, and the other end of the crank 312 is connected to the first connecting member 321 through the second bearing 16.

[0053] As described above, the first bearing 15 is disposed between the eccentric shaft 314 and the crank 312, so that when the eccentric shaft 314 rotates along its own rotation center line, the crank 312 will not rotate 360° with the eccentric shaft 314, so that the crank 312 can achieve reciprocating motion in the vertical direction. The second bearing 16 is disposed between the crank 312 and the first connecting member 321, which can also avoid jamming or wear caused by rigid connection during use.

[0054] Furthermore, in the electrode detection device of this utility model, the second connecting member 322 is provided with a protrusion, the protrusion is provided with a sliding groove 323, and the mounting bracket 1 is provided with a slider 17, wherein the slider 17 is slidably disposed in the sliding groove 323.

[0055] As can be seen from the above description, the cooperative design of slider 17 and groove 323 restricts the movement trajectory of second connector 322, prevents pressure plate 33 from lateral displacement during up and down movement, and further improves stability and repeatability.

[0056] Please refer to Figures 1 to 11 A preferred embodiment of this utility model is an electrode inspection device, comprising a mounting frame 1, a visual inspection mechanism 2, and a pressing mechanism 3. The mounting frame 1 includes an operating table 11 and a mounting plate 12 connected to each other. The operating table 11 is horizontally placed, and the mounting plate 12 extends vertically. A conveyor belt 13 is provided on the operating table 11 for conveying battery electrodes. Multiple holes are formed in the middle area of ​​the conveyor belt 13 to vacuum-adsorb the electrodes.

[0057] In this embodiment, as Figure 1 , Figure 3 as well as Figure 11 As shown, the visual inspection mechanism 2 is fixed at one end to the mounting plate 12, and is located above the pressing mechanism 3. The visual inspection mechanism 2 includes a support assembly 21 and four cameras 24. The support assembly 21 includes a first track 22 and two second tracks 23. One end of the first track 22 is fixed to the mounting plate 12, and the first track 22 extends along a horizontal first direction (i.e., the horizontal width direction). The two second tracks 23 are arranged parallel to each other at a certain interval, and both second tracks 23 extend along a horizontal second direction (i.e., the horizontal length direction). Both second tracks 23 are slidably mounted on the first track 22. Simultaneously, the four cameras 24 are slidably mounted on the second tracks 23, and each camera 24 can move along the second track 23 in the horizontal second direction. Each second track 23 has two cameras 24.

[0058] In this embodiment, as Figures 5 to 8As shown in the figure, one end of the blank holding mechanism 3 is slidably arranged on the mounting plate 12 along the vertical height direction, and it is located above the conveyor belt 13. The blank holding mechanism 3 includes a transmission component 31, a connection component 32 and two pressing plates 33. The transmission component 31 is connected to the driving device 4. One end of the connection component 32 is connected to the transmission component 31, and the other end of the connection component 32 is connected to the pressing plate 33. A certain distance is spaced between the two pressing plates 33 and they are arranged in parallel. The shape of the pressing plate 33 is a long plate shape.

[0059] In this embodiment, the above-mentioned transmission component 31 includes a first rotating member 311 and a crank 312. The first rotating member 311 includes a rotating shaft portion 313 and an eccentric shaft portion 314. One end of the rotating shaft portion 313 is in transmission connection with the output shaft of the driving mechanism, and the other end of the rotating shaft portion 313 is fixedly connected to the eccentric shaft portion 314, and the rotation center lines of the rotating shaft portion 313 and the eccentric shaft portion 314 are eccentrically arranged. Specifically, as Figure 9 and Figure 10 shown, the first rotating member 311 includes a rotating shaft portion 313 and an eccentric shaft portion 314 that are both cylindrical. The diameter of the rotating shaft portion 313 is greater than the diameter of the eccentric shaft portion 314, and the rotating shaft portion 313 and the eccentric shaft portion 314 are connected by a cylindrical connecting block (i.e., an eccentric wheel). The column height of the cylindrical connecting block is relatively small, but its cross-sectional area is larger than that of the rotating shaft portion 313 and the eccentric shaft portion 314. Among them, the rotating shaft portion 313 is coaxially arranged with the cylindrical connecting block, and the eccentric shaft portion 314 is non-coaxially arranged with the cylindrical connecting block. Correspondingly, the connection component 32 includes a first connecting member 321 and a second connecting member 322. The first connecting member 321 is respectively connected to the crank 312 and the second connecting member 322. The shape of the second connecting member 322 is similar to a Chinese character 'Ri'. The two pressing plates 33 are arranged below the 'Ri'-shaped second connecting member 322.

[0060] In this embodiment, the cross-section of the above-mentioned crank 312 is similar to a runway shape, and receiving holes are correspondingly provided at both ends. The receiving hole at the upper end is used to receive the first bearing 15. The inner ring of the first bearing 15 is sleeved on at least part of the eccentric shaft portion 314. That is, the upper end of the crank 312 is connected to the eccentric shaft portion 314 through the first bearing 15 so as to be relatively rotatable. The receiving hole at the lower end is used to receive the second bearing 16. The inner ring of the second bearing 16 is sleeved on the connecting column 324 that the first connecting member 321 extends towards the crank 312. That is, the lower end of the crank 312 is connected to the first connecting member 321 through the second bearing 16. In addition, multiple windows are provided on the mounting frame for easy installation. To contribute to the stability of the up-and-down reciprocating movement of the second connecting member 322, a convex block is provided on the second connecting member 322, and a sliding groove 323 is provided on the convex block. A sliding block 17 is provided on the mounting plate 12. Among them, the sliding block 17 is slidably arranged in the sliding groove 323.

[0061] In summary, the electrode inspection device provided by this utility model is a novel electrode inspection mechanism, specifically comprising a vision inspection mechanism and a pressing mechanism 3. After the electrode is processed, it needs to be inspected to ensure that the produced electrode is qualified and can meet the unloading requirements. During the transport of the electrode on the conveyor belt 13, multiple holes are opened in the middle area of ​​the conveyor belt 13 to vacuum-adsorb the electrode. The pressing mechanism 3, in conjunction with the electrode's conveying frequency, presses the electrode. While pressing the electrode, the vision inspection mechanism captures the electrode's dimensions to determine if the dimensions are qualified, and simultaneously confirms whether the tabs in the electrode are folded. The pressing mechanism 3 achieves vertical movement in the vertical direction through the rotation of an eccentric wheel.

[0062] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electrode testing device, characterized in that, The device includes a mounting frame and a vision inspection mechanism. The mounting frame is equipped with a conveyor belt for conveying battery electrodes. The conveyor belt has multiple adsorption holes for connecting to a negative pressure gas source. The vision inspection mechanism is mounted on the mounting frame and is located above the conveyor belt.

2. The electrode testing device according to claim 1, characterized in that, The visual inspection mechanism includes a support component and multiple cameras. The support component is securely connected to the mounting frame, and the multiple cameras are mounted on the support component.

3. The electrode testing device according to claim 2, characterized in that, The support assembly includes a first track and two second tracks. The first track is securely connected to the mounting bracket. The first track extends along a first horizontal direction, and the second track extends along a second horizontal direction. The two second tracks are slidably disposed on the first track.

4. The electrode testing device according to claim 3, characterized in that, The number of cameras is four, with two cameras slidably mounted on each of the second tracks.

5. The electrode testing device according to claim 1, characterized in that, It also includes a drive device and a pressing mechanism. The drive device is mounted on the mounting frame and is connected to the pressing mechanism in a transmission manner. The pressing mechanism is slidably mounted on the mounting frame in the vertical direction and is located above the conveyor belt.

6. The electrode testing device according to claim 5, characterized in that, The pressing mechanism includes a transmission component, a connecting component, and a pressing plate. One end of the transmission component is connected to the driving device, and the other end of the transmission component is connected to the connecting component. The connecting component is connected to the pressing plate.

7. The electrode testing device according to claim 6, characterized in that, The transmission assembly includes a first rotating component and a crank. The first rotating component includes a rotating shaft portion and an eccentric shaft portion. One end of the rotating shaft portion is connected to the output shaft of the drive mechanism, and the other end of the rotating shaft portion is fixedly connected to the eccentric shaft portion. The rotation center lines of the rotating shaft portion and the eccentric shaft portion are eccentrically arranged. One end of the crank is rotatably connected to the eccentric shaft portion, and the other end of the crank is connected to the connecting assembly.

8. The electrode testing device according to claim 7, characterized in that, The connecting assembly includes a first connector and a second connector, wherein the first connector is connected to the crank and the second connector respectively.

9. The electrode testing device according to claim 8, characterized in that, It also includes a first bearing and a second bearing, one end of the crank is rotatably connected to the eccentric shaft via the first bearing, and the other end of the crank is connected to the first connecting member via the second bearing.

10. The electrode testing device according to claim 8, characterized in that, The second connector is provided with a protrusion, and the protrusion is provided with a sliding groove. The mounting bracket is provided with a slider, wherein the slider is slidably disposed in the sliding groove.

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