Pneumatic needle texturing method

Abstract

The invention provides a pneumatic needle hammering texturing method which comprises the following steps: controlling a feeding manipulator to act, and conveying a to-be-treated battery cell to a battery cell conveying assembly; the battery cell conveying assembly is controlled to act, and the battery cells are conveyed to a working area of the pneumatic needle assembly; and the pneumatic needle assembly is controlled to act, and the surface of the battery cell is subjected to roughening treatment. According to the pneumatic needle beating texturing method, the pneumatic needle beating method is adopted to replace laser to achieve uniform texturing of the surface of the battery cell aluminum shell, the manufacturing cost is low, the energy consumption is low, the manufacturing cost and the use cost of battery cell aluminum shell texturing equipment are greatly reduced, popularization and application of a UV spraying automatic line are promoted, no hazardous waste such as smoke dust is generated, meanwhile, the texturing efficiency is high, and the texturing effect is good. And the battery cell aluminum shell passes through the pneumatic needle array to finish texturing.

Description

Technical Field

[0001] The invention relates to the technical field of battery core production technology, and in particular to a pneumatic needle roughening method. Background Art

[0002] The battery cell is the basic unit that constitutes the power battery and the energy storage battery. After the battery cells are connected in series or in parallel to form a battery module, they become a power battery or an energy storage battery. Its safety needs to be considered. The battery cell casing needs to be insulated and its insulation performance must meet certain requirements to avoid safety accidents caused by thermal runaway of the battery cell due to leakage.

[0003] At present, the insulation treatment method of battery cells by spraying insulating paint is favored for its high insulation performance, thermal conductivity and production efficiency; however, the aluminum shell of the battery cell is very bright and difficult to adhere to the surface; roughening treatment is required to achieve the adhesion of the paint. Laser can be used to carve uniform small pits on the shell. This method has the certainties of high cost, high energy consumption and high maintenance cost. How to achieve low-cost and effective roughening is the prerequisite for the insulating paint spraying process. Summary of the invention

[0004] One of the purposes of the present invention is to provide a pneumatic needle roughening method to solve the above technical problems.

[0005] An embodiment of the present invention provides a pneumatic needle roughening method, comprising:

[0006] Control the movement of the loading robot to grab the battery cells to be processed and place them in the battery cell conveying assembly;

[0007] Control the movement of the battery cell conveying assembly to convey the battery cells to the working area of ​​the pneumatic needle assembly;

[0008] Control the movement of the pneumatic needle assembly to roughen the surface of the battery cell.

[0009] Preferably, the battery cell conveying assembly comprises: a conveyor belt and a plurality of battery cell jigs arranged on the surface of the conveyor belt;

[0010] The battery cell fixture comprises: a placement groove adapted to the end surface where the electrode of the battery cell is located, and a limiting body located on both sides of the placement groove; a buffer layer is arranged on one side of the limiting body close to the battery cell placement groove;

[0011] The height of the limiting body at the front end of the conveying direction of the conveyor belt is smaller than the height of the limiting body at the rear end of the conveying direction of the conveyor belt.

[0012] Preferably, the height of the limiting body at the front end of the conveying direction of the conveyor belt is greater than or equal to one half of the length of the battery cell and less than or equal to two thirds of the length of the battery cell.

[0013] Preferably, the pneumatic needle roughening method further comprises:

[0014] Control the movement of the unloading robot to remove the processed battery cells from the battery cell conveying assembly.

[0015] Preferably, the pneumatic needle roughening method further comprises:

[0016] receiving an image of the removed battery cell captured by an image acquisition device;

[0017] The image is analyzed and the control parameters of the cell transport assembly and the pneumatic needle assembly are adjusted based on the analysis results.

[0018] Preferably, the pneumatic needle assembly comprises: a pair of symmetrically arranged air intake plates, an air intake plate arranged above the battery cell conveying assembly; a plurality of pneumatic needles are arranged on one side of the air intake plate close to the battery cell conveying assembly; the air intake plate is arranged as a cavity structure;

[0019] Among them, the pneumatic needle includes: a shell, an air pressure chamber, a piston, a return spring and a steel needle; the air pressure chamber is provided with an air inlet and an exhaust port, the exhaust port is arranged on the side of the shell, and the air inlet is arranged at the end of the shell away from the steel needle; the piston is arranged in the air pressure chamber and connected to the tail of the steel needle; the return spring is arranged on the outside of the steel needle; the tip of the steel needle protrudes from the shell.

[0020] Preferably, an air intake plate disposed above the battery cell conveying assembly is arranged on a lifting mechanism, and the lifting mechanism adjusts the distance between the air intake plate and the battery cell conveying assembly.

[0021] Preferably, the pneumatic needles arranged on the symmetrically arranged air intake plates are arranged obliquely.

[0022] Preferably, two symmetrically arranged air intake plates are respectively arranged on a transverse movement mechanism, and the transverse movement mechanism drives the air intake plate to move so as to adjust the distance between the air intake plate and the battery cell conveying assembly.

[0023] Preferably, the traverse mechanism comprises:

[0024] Transverse track: two sets of transverse tracks are installed side by side on the side mounting plate;

[0025] A transverse movement base plate, the bottom end of which is provided with a transverse movement block slidably mounted on a transverse movement track;

[0026] The side fixing plate is vertically mounted on the transverse bottom plate, and the air intake plate is arranged on a side of the side fixing plate close to the battery cell conveying assembly.

[0027] The pneumatic needle peening texturing method of the present invention adopts the pneumatic needle peening method to replace the laser to achieve uniform texturing on the surface of the battery core aluminum shell, has low manufacturing cost and low energy consumption, greatly reduces the manufacturing cost and use cost of battery core aluminum shell texturing equipment, promotes the popularization and application of UV spraying automatic lines, and has high texturing efficiency while no hazardous waste such as smoke and dust is generated, and the battery core aluminum shell is texturized when it passes through the pneumatic needle array.

[0028] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0029] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 A schematic diagram of a pneumatic needle roughening method according to an embodiment of the present invention;

[0032] Figure 2 Schematic diagram of a battery cell fixture in an embodiment of the present invention;

[0033] Figure 3 A three-dimensional diagram of a device loaded with a pneumatic needle assembly according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of a pneumatic needle assembly in an embodiment of the present invention;

[0035] Figure 5 This is a distribution diagram of the pneumatic needle assembly on the air intake plate in an embodiment of the present invention;

[0036] Figure 6 For the corresponding Figure 3 Side view of

[0037] Figure 7 For the corresponding Figure 3 A top view of

[0038] Figure 8 For the corresponding Figure 3 Front view of . DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0040] The embodiment of the present invention provides a method for pneumatic needle roughening, such as Figure 1 As shown, including:

[0041] Step 1: Control the loading robot to grab the battery cell to be processed and place it on the battery cell conveying assembly;

[0042] Step 2: Control the movement of the battery cell conveying assembly to convey the battery cell to the working area of ​​the pneumatic needle assembly;

[0043] Step 3: Control the movement of the pneumatic needle assembly to roughen the surface of the battery cell.

[0044] The pneumatic needle peening texturing method of the present invention adopts the pneumatic needle peening method to replace the laser to achieve uniform texturing on the surface of the battery core aluminum shell, has low manufacturing cost and low energy consumption, greatly reduces the manufacturing cost and use cost of battery core aluminum shell texturing equipment, promotes the popularization and application of UV spraying automatic lines, and has high texturing efficiency while no hazardous waste such as smoke and dust is generated, and the battery core aluminum shell is texturized when it passes through the pneumatic needle array.

[0045] In order to realize the conveying of the battery cells, in one embodiment, the battery cell conveying assembly includes: a conveyor belt and a plurality of battery cell jigs arranged on the surface of the conveyor belt; a loading robot grabs the battery cells to be processed and places them in the battery cell jigs; the conveyor belt sequentially conveys the battery cell jigs to the working area of ​​the pneumatic needle assembly; and the pneumatic needle assembly performs the roughening treatment;

[0046] Among them, Figure 2 As shown, the battery cell fixture includes: a placement groove adapted to the end surface where the electrode of the battery cell 3 is located, and a limiting body 2 located on both sides of the placement groove; a buffer layer is provided on the side of the limiting body 2 close to the battery cell placement groove; the buffer layer can be configured as a sponge layer; on the one hand, it provides a buffering effect, and on the other hand, it provides a certain resistance when the battery cell is deflected, so as to achieve a controllable flipping effect;

[0047] The height of the limiting body at the front end of the conveying belt 1 in the conveying direction is smaller than the height of the limiting body at the rear end of the conveying belt 1 in the conveying direction.

[0048] Considering the stability of the battery cell pushed by the limiter 2 behind the battery cell, the height of the limiter at the front end of the conveying direction of the conveyor belt 1 is greater than or equal to one half of the length of the battery cell and less than or equal to two thirds of the length of the battery cell. And the height of another limiter can be configured to be less than or equal to one third of the length of the battery cell.

[0049] In order to remove the battery cell from the battery cell conveying assembly and ensure continuous operation, the pneumatic needle roughening method also includes:

[0050] Control the movement of the unloading robot to remove the processed battery cells from the battery cell conveying assembly.

[0051] In order to ensure the effective and stable operation of the operation and determine the quality of the operation, the pneumatic needle roughening method also includes:

[0052] receiving an image of the removed battery cell captured by an image acquisition device;

[0053] Analyze the image, and adjust the control parameters of the battery cell conveying assembly and the pneumatic needle assembly according to the analysis results. The unloading robot removes the battery cell from the battery cell conveying assembly and places it on the acquisition area of ​​the image acquisition device. The image acquisition device collects the battery cell image, analyzes the image, and extracts the description parameters of the dot matrix after the roughening treatment; construct a control analysis data set based on the description parameters and the pre-configured standard description parameters, and then retrieve the corresponding control parameter set from the pre-configured control library based on the control analysis data set; parse the control parameter set to determine the control parameters for the battery cell conveying assembly and the pneumatic needle assembly; the description parameters include: the average value of the distance between each point in the dot matrix, the maximum value of the distance between each point in the dot matrix, the number of points per unit area, etc.; the control parameter set is formed by the description parameters and the standard description parameters being associated with each other and arranged in sequence; the control library is analyzed and constructed in advance by professionals, and the control parameter set in the library is associated with the control analysis data set one by one; for example: the adjustment method is to reduce or increase the speed of the battery cell conveying assembly, increase or decrease the vibration frequency of the pneumatic needle assembly, etc.;

[0054] Obtaining the image of the battery cell to be processed after adjustment, matching it with each standard image in the standard image library corresponding to the adjusted control parameter set, and outputting an alarm message when no matching item exists;

[0055] In order to further determine the content of the alarm information, the image may be matched with the alarm images in the alarm analysis library, and the content associated with the matched alarm image may be extracted and output.

[0056] In order to further realize the controllable flipping of the battery cell in the battery cell jig, a positioning column can be arranged in the groove of the jig, the positioning column is sleeved in the air hole at the electrode end of the battery cell, and the positioning column is arranged on a rotating platform, and the battery cell is driven to rotate in the battery cell jig through the rotating platform; the image shooting device is a panoramic shooting device, that is, the battery cell is placed on a transparent tray, six-sided imaging is performed, and then the imaging of each side is corresponded (the air hole can be used as a reference point for correspondence), and then each roughened point is corresponded to the pneumatic needle and numbered, and the image of a preset range around the point with the same number is extracted as the image to be analyzed, and N consecutive images to be analyzed are extracted as an analysis group; a pre-configured analysis library is used to perform analysis to determine whether the pneumatic needle is abnormal and the abnormal description; and an abnormal prompt message containing the abnormal description is output. Among them, the analysis library is constructed by professionals in advance, and the standard image group in the library corresponds to the associated analysis results. The analysis results include: whether an abnormality occurs and the abnormal description of the corresponding abnormality; the images of the analysis group are matched one by one with the images in the standard image group and the similarity is calculated. When the similarity is greater than the preset similarity threshold (any value between 0.80 and 1.0), the analysis results corresponding to the standard image group are retrieved. The setting position of the pneumatic needle is fixed, and the position of its impact on the battery cell is also fixed, and the initial position of the battery cell can be unified due to the relationship of the positioning column. When the flipping direction is the same, after the image is unfolded and matched according to the positioning column, it can be known which pneumatic needle corresponds to the impact point of each position; specifically, the impact points in the image can be numbered by constructing a numbering template. The construction of the numbering template can be obtained through multiple tests. The test method includes: retaining any pneumatic needle on the pneumatic needle assembly, and the rest are blocked with a blocking mechanism, and then the battery cell is roughened and photographed, and the position of the pneumatic needle corresponding to the impact point on the image can be obtained.

[0057] In order to achieve more precise control of pneumatic hairbrushing, the impact force of the pneumatic needle on the battery cell can be detected. When the impact force is greater than a preset first threshold or less than a preset second threshold, an alarm is output and the battery cell is marked; wherein the first threshold is greater than the second threshold; the impact force can be detected by directly setting a pressure sensor on the return spring and the piston, and analyzing the value detected by the pressure sensor.

[0058] In one embodiment, Figures 3 to 8 As shown, the pneumatic needle assembly 11 includes: a pair of symmetrically arranged air intake plates 20, an air intake plate 20 arranged above the battery cell conveying assembly; a plurality of pneumatic needles 12 are arranged on one side of the air intake plate 20 close to the battery cell conveying assembly; the air intake plate 20 is arranged as a cavity structure;

[0059] Among them, the pneumatic needle 12 includes: a shell 13, an air pressure chamber 14, a piston 17, a return spring 19 and a steel needle 18; the air pressure chamber 14 is provided with an air inlet 15 and an exhaust port 16, the exhaust port 16 is arranged on the side of the shell 13, and the air inlet 15 is arranged at the end of the shell 13 away from the steel needle 18; the piston 17 is arranged in the air pressure chamber 14 and connected to the tail of the steel needle 18; the return spring 19 is sleeved on the outside of the steel needle 18; the tip of the steel needle 18 protrudes from the shell 13. The steel needle 18 is installed in the housing 13 so as to be resettable by the return spring 19. When air is supplied from the air inlet 15 to the air pressure chamber 14, the pressure in the air pressure chamber 14 increases, and the piston 17 drives the steel needle 18 to move in the contraction direction of the return spring 19. After the piston 17 passes over the exhaust port 16, the pressure in the air pressure chamber 14 is released by the exhaust port 16, and the pressure in the air pressure chamber 14 decreases. Under the reset action of the return spring 19, the piston 17 returns to its original position in the air pressure chamber 14.

[0060] The piston 17 at the tail of the steel needle 18 is driven by the compressed air input from the air inlet 15 to overcome the elastic force of the return spring 19 and move in the contraction direction of the return spring 19. When the piston 17 passes over the exhaust port 16, the air pressure chamber 14 is connected to the atmosphere and exhausts outward through the exhaust port 16, and the pressure in the air pressure chamber 14 decreases. When the pressure is released to a value lower than the elastic force of the return spring 19, the piston 17 is reset under the action of the elastic force of the return spring 19, and the steel needle 18 retracts into the air pressure chamber 14; when the piston 17 retreats to pass the exhaust port 16, the air pressure chamber 14 is isolated from the atmosphere, and the pressure in the air pressure chamber 14 rises again until it overcomes the elastic force of the return spring 19 and pushes the piston 17 to move in the contraction direction of the return spring 19 for the second time. This is repeated, and the steel needle realizes an oscillating action. As long as the air pressure, the distance between the battery core aluminum shell and the steel needle 18 are adjusted appropriately, the steel needle 18 can carve the required pits on the battery core aluminum shell. When the battery core aluminum shell and the steel needle 18 move relative to each other at a fixed speed, evenly spaced dots and lines can be engraved on the surface of the battery core aluminum shell in the moving direction, thereby achieving roughening treatment on the surface of the battery core aluminum shell;

[0061] An air intake plate arranged above the battery cell conveying assembly is configured on a lifting mechanism, and the lifting mechanism adjusts the distance between the air intake plate 20 and the battery cell conveying assembly. The pneumatic needles 12 arranged on the symmetrically arranged air intake plates 20 are arranged obliquely. The two symmetrically arranged air intake plates 20 are respectively arranged on a transverse movement mechanism, and the transverse movement mechanism drives the air intake plate 20 to move to adjust the distance between the air intake plate 20 and the battery cell conveying assembly. Among them, the transverse movement mechanism includes: a transverse movement rail 22, two groups of transverse movement rails 22 are installed in parallel on the side mounting plate 21; a transverse movement bottom plate 23, the bottom end of the transverse movement bottom plate 23 is installed with a transverse movement block slidably installed on the transverse movement rail 22; a side fixed plate 24, the side fixed plate 24 is vertically installed on the transverse movement bottom plate 23, and the air intake plate 20 is arranged on the side of the side fixed plate 24 close to the battery cell conveying assembly. The traverse bottom plate 23 moves on the traverse rail 22 through the traverse block, so that the side fixing plate 24 installed on the traverse bottom plate 23 and the pneumatic needle 12 installed on the side fixing plate 24 can adjust the distance in the horizontal direction; in addition, the side reinforcing plate 25 is installed on the outer end of the side fixing plate 24. The setting of the side reinforcing plate 25 improves the connection strength between the side fixing plate 24 and the traverse bottom plate 23; the traverse bottom plate 23 is installed with a push-pull clamp 26 adapted to the side mounting plate 21. The setting of the push-pull clamp 26 facilitates the fixing of the traverse bottom plate 23 on the side mounting plate 21.

[0062] The pneumatic needles 12 on the three air intake plates 20 complete the surface roughening treatment of the battery core aluminum shell. The lateral movement mechanism can realize lateral movement, thereby realizing the horizontal distance adjustment of the oppositely arranged air intake plates, and the lifting mechanism can realize the longitudinal movement of the upper air intake plate, thereby realizing the vertical distance adjustment. Therefore, for battery core aluminum shells of different sizes, the pneumatic needles 12 can be adaptively attached to the surface of the battery core aluminum shell;

[0063] The lifting mechanism includes: an upper fixed plate 27, on each side mounting plate 21 are mounted two optical axes 28 connected to the upper fixed plate 27; a lower lifting plate 29, the lower lifting plate 29 is located below the upper fixed plate 27 and is slidably mounted on the optical axis 28, and the pneumatic needle 12 is mounted on the bottom end of the lower lifting plate 29; a hand-cranked hand-wheel type worm gear screw lifter 30, the hand-cranked hand-wheel type worm gear screw lifter 30 is mounted on the upper fixed plate 27 and connected to the top end of the lower lifting plate 29. Manually rotating the hand-cranked hand-wheel type worm gear screw lifter 30 drives the lower lifting plate 29 to perform lifting and lowering motions along the optical axis 28 below the upper fixed plate 27, thereby driving the pneumatic needle 12 mounted on the bottom end of the lower lifting plate 29 to adjust the distance in the vertical direction.

[0064] Because a pneumatic needle 12 can only obtain a small pit dot line on the surface of the battery core aluminum shell along the moving direction of the battery core aluminum shell, which is obviously far from enough for the surface roughening of the entire battery core aluminum shell. In order to enhance the adhesion of the battery core aluminum shell coating, it is hoped that the small pits on the surface of the battery core aluminum shell can be evenly distributed, and it is hoped that the small pits on the surface of the battery core aluminum shell can be as dense as possible. The outer diameter of a single pneumatic needle is usually more than 25mm. If the pneumatic needle 12 is arranged "horizontally and vertically", the point spacing engraved in the vertical direction must be greater than or equal to 25mm, which will form a large area of ​​blank area, that is, the unroughened area. In this way, only reciprocating translation engraving can be used, which has low work efficiency and cannot meet high beat requirements. Therefore, several pneumatic needles 12 of the present invention are arranged along the oblique line, so that the adjacent pneumatic needles 12 are offset 1mm sideways and rearwards to achieve a row spacing of 1mm. After the engraving is completed, a dot matrix with small pits and a row spacing of 1mm is formed on the surface of the battery cell aluminum shell, and the dot spacing in the moving direction depends on the moving speed of the battery cell aluminum shell and the oscillation frequency of the pneumatic needle 12. As long as it is set appropriately, small dot matrix pits that meet the needs can be engraved, greatly enhancing the adhesion of the paint on the battery cell aluminum shell. In the more specific roughening process, since the conveyor belt is moving, the impact of the pneumatic needle 12 will form a tiny turning force on the circumference, slightly rotating the battery cell to achieve continuous engraving;

[0065] In this way, when the workpiece is moved horizontally, a dotted horizontal line with a spacing of 1mm can be engraved on the surface of the battery core aluminum shell. The density of the dots on the same horizontal line depends on the moving speed of the battery core aluminum shell relative to the pneumatic needle assembly. The slower the speed, the smaller the spacing between the dots on the same horizontal line, and the higher the density. The vibration frequency of the pneumatic needle can reach 300Hz. If the moving speed of the workpiece is 300mm / s, the spacing of the small pits engraved along the moving direction is 1mm.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for pneumatic needle roughening, characterized in that: include: Control the movement of the loading robot to grab the battery cells to be processed and place them in the battery cell conveying assembly; Control the movement of the battery cell conveying assembly to convey the battery cells to the working area of ​​the pneumatic needle assembly; Control the movement of the pneumatic needle assembly to roughen the surface of the battery cell.

2. The pneumatic needle roughening method according to claim 1, characterized in that: The battery cell conveying assembly comprises: a conveyor belt and a plurality of battery cell jigs arranged on the surface of the conveyor belt; The battery cell fixture comprises: a placement groove adapted to the end surface where the electrode of the battery cell is located, and a limiting body located on both sides of the placement groove; a buffer layer is arranged on one side of the limiting body close to the battery cell placement groove; The height of the limiting body at the front end of the conveying direction of the conveyor belt is smaller than the height of the limiting body at the rear end of the conveying direction of the conveyor belt.

3. The pneumatic needle roughening method according to claim 2, characterized in that: The height of the limiting body at the front end of the conveying direction of the conveyor belt is greater than or equal to one half of the length of the battery cell and less than or equal to two thirds of the length of the battery cell.

4. The pneumatic needle roughening method according to claim 1, characterized in that: Also includes: Control the movement of the unloading robot to remove the processed battery cells from the battery cell conveying assembly.

5. The pneumatic needle roughening method according to claim 4, characterized in that: Also includes: receiving an image of the removed battery cell captured by an image acquisition device; The image is analyzed and the control parameters of the cell transport assembly and the pneumatic needle assembly are adjusted based on the analysis results.

6. The pneumatic needle roughening method according to claim 1, characterized in that: The pneumatic needle assembly includes: a pair of symmetrically arranged air intake plates, and an air intake plate arranged above the battery cell conveying assembly; a plurality of pneumatic needles are arranged on one side of the air intake plate close to the battery cell conveying assembly; the air intake plate is arranged as a cavity structure; Among them, the pneumatic needle includes: a shell, an air pressure chamber, a piston, a return spring and a steel needle; the air pressure chamber is provided with an air inlet and an exhaust port, the exhaust port is arranged on the side of the shell, and the air inlet is arranged at the end of the shell away from the steel needle; the piston is arranged in the air pressure chamber and connected to the tail of the steel needle; the return spring is arranged on the outside of the steel needle; the tip of the steel needle protrudes from the shell.

7. The pneumatic needle roughening method according to claim 6, characterized in that: An air intake plate disposed above the battery cell conveying assembly is arranged on a lifting mechanism, and the lifting mechanism adjusts the distance between the air intake plate and the battery cell conveying assembly.

8. The pneumatic needle roughening method according to claim 6, characterized in that: The pneumatic needles arranged on the symmetrically arranged air intake plates are arranged obliquely.

9. The pneumatic needle roughening method according to claim 6, characterized in that: Two symmetrically arranged air intake plates are respectively arranged on a transverse movement mechanism, and the transverse movement mechanism drives the air intake plates to move so as to adjust the distance between the air intake plates and the battery cell conveying assembly.

10. The pneumatic needle roughening method according to claim 9, characterized in that: The traverse mechanism includes: Transverse track: two sets of transverse tracks are installed side by side on the side mounting plate; A transverse movement base plate, the bottom end of which is provided with a transverse movement block slidably mounted on a transverse movement track; The side fixing plate is vertically mounted on the transverse bottom plate, and the air intake plate is arranged on a side of the side fixing plate close to the battery cell conveying assembly.

Images