Pole piece cleaning device and battery production system

Abstract

This application discloses an electrode cleaning apparatus and a battery production system. The electrode cleaning apparatus includes an adsorption platform, a pressing member, and a laser cleaning head. The adsorption platform has a bearing surface configured to hold battery electrodes; the adsorption platform also has adsorption holes penetrating the bearing surface. The pressing member has a first state in which it is positioned opposite the bearing surface in a first direction and is configured to clamp the battery electrodes in cooperation with the bearing surface. The laser cleaning head is configured to emit a laser to clean the battery electrodes clamped between the pressing member and the bearing surface. The technical solution of this application can improve the cleaning effect of the electrode cleaning apparatus on battery electrodes.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to an electrode cleaning device and a battery production system. Background Technology

[0002] In related technologies, during the cleaning and thinning process of battery electrodes using an electrode cleaning device, the edges of the electrodes are prone to warping and becoming flat. At this time, the defocusing amount during laser cleaning can easily change, leading to phenomena such as burning of the battery electrodes or insufficient cleaning depth, thus affecting the processing effect of the electrode cleaning device. Utility Model Content

[0003] The main objective of this application is to provide an electrode cleaning device and a battery production system, which aim to improve the cleaning and processing effect of the electrode cleaning device on battery electrodes.

[0004] To achieve the above objectives, the electrode cleaning apparatus proposed in this application includes:

[0005] The adsorption platform has a support surface configured to hold battery electrodes; the adsorption platform also has adsorption holes that penetrate the support surface.

[0006] A pressing member has a first state; in the first state, the pressing member and the bearing surface are disposed opposite each other in a first direction and configured to cooperate with the bearing surface to clamp the battery electrode sheet; and

[0007] A laser cleaning head is configured to emit a laser to clean the battery electrodes held between a pressing component and a bearing surface.

[0008] The electrode cleaning device in this application includes a pressing member opposite to the bearing surface of the adsorption platform. This allows the battery electrode, adsorbed onto the bearing surface through the adsorption holes, to be clamped and limited by the pressing member in conjunction with the bearing surface. At this time, the battery electrode can be pressed and flattened by the pressing member, maintaining its flatness and reducing the possibility of warping caused by the localized adsorption force of the adsorption holes. This ensures that the distance between the laser cleaning head and the battery electrode remains constant during laser cleaning, maintaining a consistent defocusing amount. This allows for more stable cleaning of all parts of the battery electrode, reducing the likelihood of electrode burns or insufficient cleaning depth, and improving the cleaning effect of the electrode cleaning device.

[0009] In some embodiments, the electrode cleaning apparatus further includes a drive member connected to at least one of a pressing member and an adsorption platform to drive the pressing member and the adsorption platform to move closer to and further away from each other.

[0010] Therefore, by driving at least one of the pressing component and the adsorption platform to move, the pressing component and the adsorption platform can move closer and further apart, thereby facilitating the placement and removal of the battery electrode sheets.

[0011] In some embodiments, the drive member is connected to the pressing member and configured to drive the pressing member to slide along a first direction.

[0012] This makes the force applied by the driving component to the pressing component parallel to the direction of the clamping force on the battery electrode, thereby allowing the force applied by the driving component to the pressing component to be fully converted into the clamping force on the battery electrode, so as to improve the clamping and flattening effect on the battery electrode.

[0013] In some embodiments, the drive member is further configured to drive the pressing member to rotate about an axis parallel to the first direction, so that the pressing member has a first state and a second state;

[0014] In the second state, the pressing member and the bearing surface are misaligned in the first direction.

[0015] Therefore, by driving the pressing component to rotate to a position away from the adsorption platform, the pressing component will not interfere with the placement and removal of the battery electrode on the adsorption platform, thus improving the convenience of placing and removing the battery electrode.

[0016] In some embodiments, the driving component is a lifting rotary cylinder.

[0017] This makes the structure of the drive component relatively simple, which in turn improves the convenience of manufacturing and installing the drive component.

[0018] In some embodiments, the pressing member includes:

[0019] The body is pressed against; and

[0020] A buffer pad is placed on the side of the body that is pressed against the bearing surface.

[0021] Therefore, the pressing component prevents it from deforming completely during the pressing process, thus improving the clamping and flattening effect on the battery electrode and extending the service life of the pressing component. The buffer pad cushions the compression between the pressing component and the battery electrode, ensuring flexible contact and reducing the possibility of pressure damage to the surface of the battery electrode.

[0022] In some embodiments, the thickness of the cushioning pad in the first direction is defined as d1, satisfying the relationship: 1 mm ≤ d1 ≤ 10 mm.

[0023] This ensures that the thickness of the buffer pad is not too small, thereby improving the buffering effect between the buffer pad and the battery electrode; at the same time, it ensures that the thickness of the buffer pad is not too large, thereby reducing the overall volume of the pressure component and reducing the space occupied.

[0024] In some embodiments, on a projection plane perpendicular to the first direction, the projections of the two ends of the pressing member in the second direction are located outside the projection of the bearing surface, and the projections of the two sides of the pressing member in the third direction are located inside the projection of the bearing surface, and the first direction, the second direction, and the third direction intersect each other.

[0025] Therefore, by setting the length of the pressing member in the second direction to be greater than the length of the bearing surface in the second direction, so that it protrudes from the bearing surface, the pressing member can cover and press the edges of the battery electrode sheet on both sides in the second direction, thereby improving the clamping and flattening effect of the battery electrode sheet. Furthermore, by setting the length of the pressing member in the third direction to be less than the length of the bearing surface in the third direction, the projections of the pressing member on both sides in the third direction can be located inside the projection of the bearing surface, thus facilitating the exposure of the edges of the battery electrode sheet on both sides in the third direction for cleaning.

[0026] In some embodiments, in the second direction, the length of the bearing surface protruding from the pressing member is defined as d2, satisfying the relationship: d2≤10mm.

[0027] This ensures that the protrusion length of the pressing member beyond the edge of the bearing surface in the second direction is not too large, thereby reducing the overall volume of the pressing member and minimizing its space occupation.

[0028] In some embodiments, in the third direction, the length between the edge of the pressing member and the bearing surface is defined as d3, satisfying the relationship: 2 mm ≤ d3 ≤ 10 mm.

[0029] This ensures that the distance between the pressing component and the bearing surface on both sides of the third-party upward direction is not too small, so that when the laser cleaning head cleans the edges of the battery electrode on both sides of the third-party upward direction, the high temperature heat of the processing area will reduce the impact on the pressing component and improve the service life of the pressing component; at the same time, it also ensures that the distance between the pressing component and the bearing surface on both sides of the third-party upward direction is not too large, so as to improve the clamping and flattening effect on the battery electrode.

[0030] In some embodiments, on a projection plane perpendicular to the first direction, the projection of the pressing member covers the projection of the adsorption hole.

[0031] This allows the pressing component to specifically clamp and flatten the area of ​​the battery electrode sheet that is adsorbed by the adsorption holes, thereby improving the flattening effect of the battery electrode sheet.

[0032] In some embodiments, the number of pressing members is at least two, and the at least two pressing members are arranged side by side at intervals in a third direction, intersecting the first direction in the third direction.

[0033] Therefore, when adsorption holes are provided in two areas on the bearing surface on both sides facing upwards, the battery electrode can be clamped and flattened in a targeted manner according to the positions of these two areas, improving the flattening effect of the battery electrode. At the same time, the volume of each pressing component can be set relatively small to reduce manufacturing costs.

[0034] In some embodiments, the electrode cleaning apparatus further includes a pick-and-place mechanism configured to pick up battery electrodes to place them on a support surface or to remove them from the support surface.

[0035] Therefore, the loading and unloading mechanism can automatically place the battery electrode sheets on the support surface or remove them from the support surface, thereby realizing automatic loading and unloading of battery electrode sheets, which helps to improve the working efficiency of the electrode cleaning device.

[0036] On the other hand, the battery production system proposed in this application includes the electrode cleaning device in any of the above embodiments. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the pressing member in the state of clamping the battery electrode in an embodiment of the electrode cleaning device of this application;

[0039] Figure 2 for Figure 1 A schematic diagram of the pressing component of the intermediate electrode cleaning device in the state of releasing the battery electrode;

[0040] Figure 3 for Figure 2 A schematic diagram of the structure of the intermediate electrode cleaning device for removing battery electrodes;

[0041] Figure 4 for Figure 3 Another perspective view of the electrode cleaning device;

[0042] Figure 5 for Figure 2 A schematic diagram of the structure of the middle electrode cleaning device rotating to the second state.

[0043] Explanation of icon numbers:

[0044] 100. Electrode cleaning device; 10. Adsorption platform; 11. Bearing surface; 13. Adsorption hole; 30. Pressing component; 31. Pressing body; 33. Buffer pad; 50. Laser cleaning head; 70. Driving component; 200. Battery electrode; Z, first direction; X, second direction; Y, third direction.

[0045] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0047] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0048] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0050] With the continuous development of new energy technologies, battery devices, as representatives of new energy, are widely used, and the demand for battery devices with higher energy density, better cycle characteristics, and more stable properties is increasing dramatically. Therefore, the development of solid-state batteries with higher energy density, better cycle characteristics, and more stable properties is receiving increasing attention.

[0051] In the manufacturing process of solid-state batteries, since there is no insulating membrane between the battery electrodes, it is usually necessary to coat the edges of the electrodes with insulating adhesive to reduce the possibility of short circuits caused by overlapping of the electrode edges due to burrs or other defects. Furthermore, to facilitate the coating of insulating adhesive on the electrode edges, related technologies use an adsorption platform in an electrode cleaning device to adsorb and fix the battery electrodes, and then use a laser cleaning head to clean and thin the edges of the electrode electrodes, forming a step for coating the insulating adhesive.

[0052] However, when battery electrodes are fixed by vacuum adsorption, they are prone to warping and unevenness due to localized adsorption forces. This causes variations in the distance between the laser cleaning head and the electrode edges, resulting in changes in the defocusing amount during laser cleaning. Consequently, this can lead to electrode burns or insufficient cleaning depth, affecting the processing efficiency of the electrode cleaning device.

[0053] Therefore, based on the above considerations, in order to solve the problem in related technologies where battery electrodes are easily warped and uneven when fixed on the electrode cleaning device, thus affecting the cleaning effect of the electrode cleaning device on the battery electrodes, this application proposes a novel electrode cleaning device. This electrode cleaning device innovatively incorporates a pressing member opposite to the adsorption platform. After the battery electrode is adsorbed onto the adsorption platform, the pressing member can press the battery electrode against it. The pressing member, in conjunction with the adsorption platform, clamps and presses the battery electrode, ensuring that the battery electrode remains flat for normal and stable laser cleaning, thereby improving the cleaning effect of the electrode cleaning device on the battery electrodes.

[0054] In addition, it should be noted that the electrode cleaning device proposed in this application can be used not only for cleaning and processing battery electrodes in solid-state batteries as described above, but also for laser cleaning and processing battery electrodes in other types of batteries, and the battery electrodes can be positive electrodes or negative electrodes.

[0055] The structure of the electrode cleaning device proposed in this application will be explained and illustrated below with examples:

[0056] Please refer to the reference. Figures 1 to 3 In one embodiment of this application, the electrode cleaning apparatus 100 includes an adsorption platform 10, a pressing member 30, and a laser cleaning head 50. The adsorption platform 10 has a bearing surface 11 configured to hold a battery electrode 200. The adsorption platform 10 also has adsorption holes 13 that penetrate the bearing surface 11. The pressing member 30 has a first state; in the first state, the pressing member 30 and the bearing surface 11 are positioned opposite each other in a first direction Z and configured to cooperate with the bearing surface 11 to clamp the battery electrode 200. The laser cleaning head 50 is configured to emit a laser to clean the battery electrode 200 clamped between the pressing member 30 and the bearing surface 11.

[0057] The adsorption platform 10 can be used to place the battery electrode 200 through the support surface 11. The support surface 11 can be connected and penetrated by one end of the adsorption holes 13 provided on the adsorption platform 10, and the other end of the adsorption holes 13 can be connected to a vacuum pump. At this time, air can be drawn in by the vacuum pump to create a negative pressure at the adsorption holes 13, thereby achieving vacuum adsorption of the battery electrode 200. The number of adsorption holes 13 can be multiple, and they can be arranged in a rectangular array, a circular array, or a random distribution on the support surface 11. This application does not limit the arrangement of the adsorption holes 13. In addition, the adsorption platform 10 can also be provided with a transition cavity, through which the ends of the multiple adsorption holes 13 away from the support surface 11 can be connected, and then connected to the vacuum pump through the transition cavity, in order to reduce the number of vacuum pumps required. Of course, in other embodiments, each adsorption hole 13 can be connected to a vacuum pump through a connecting pipe. Furthermore, the bearing surface 11 can be located on one side of the adsorption platform 10 in the first direction Z. When the electrode cleaning device 100 is in normal installation and use, with the ground as a reference, the first direction Z can be vertical, and the bearing surface 11 can be located on the top side of the adsorption platform 10, or it can be said that the bearing surface 11 is formed by the upper surface of the adsorption platform 10. Of course, in other embodiments, the first direction Z can also be horizontal or inclined. This application does not limit the orientation of the bearing surface 11. In addition, on the projection plane perpendicular to the first direction Z, the projection of the adsorption platform 10 can be rectangular or square. This application does not limit the structural shape type of the adsorption platform 10.

[0058] The pressing member 30, in its first state, can be positioned above the adsorption platform 10 to cooperate with the bearing surface 11 of the adsorption platform 10 to clamp the battery electrode 200, thereby pressing and flattening the battery electrode 200. Both the pressing member 30 and the adsorption platform 10 can be fixed. In this case, the distance between the pressing member 30 and the bearing surface 11 can be fixed, and the battery electrode 200 is inserted and placed between the pressing member 30 and the bearing surface 11 in a direction intersecting the first direction Z, i.e., horizontally. Alternatively, at least one of the pressing member 30 and the adsorption platform 10 can be driven to move by the driving member 70, causing them to move closer and further apart, thereby clamping and releasing the battery electrode 200 placed on the bearing surface 11. Furthermore, the pressing member 30 can only have the first state, i.e., only a state where it is positioned opposite the bearing surface 11 in the first direction Z. Of course, the pressing member 30 can also have a second state, as described below, in which it is offset from the bearing surface 11 in the second direction X. Since the bearing surface 11 can be formed from the upper surface of the adsorption platform 10, the area of ​​the bearing surface 11 is also the area of ​​the adsorption platform 10. Therefore, the relative and offset arrangement of the pressing member 30 and the bearing surface 11 can also be described as the relative and offset arrangement of the pressing member 30 and the bearing platform. Furthermore, on the projection plane perpendicular to the first direction Z, the projection of the pressing member 30 can be rectangular, or it can be square. This application does not limit the structural shape type of the pressing member 30.

[0059] The laser cleaning head 50 can emit a laser to irradiate the edge of the battery electrode 200 clamped between the pressing member 30 and the bearing surface 11. The instantaneous high temperature melts or vaporizes part of the material in the battery electrode 200, thereby thinning the edge of the battery electrode 200 to form a step. Therefore, the cleaning process of the battery electrode 200 by the laser cleaning head 50 refers to the process of removing part of the material from the battery electrode 200 using a laser. The battery electrode 200 may include a current collector and an active material layer coated on the current collector. The laser cleaning head 50 cleans and removes a portion of the active material layer to thin it and form a step. Furthermore, the laser cleaning head 50 can be connected to a robotic arm or other moving mechanism to drive the laser cleaning head 50 close to the battery electrode 200 and move along the edge of the battery electrode 200 for cleaning. Additionally, the laser cleaning head 50 can clean only the two opposite edges of the battery electrode 200, for example, cleaning the edges on both sides of a third direction Y as described below. Of course, the laser cleaning head 50 can clean all the edges around the battery electrode 200, for example, cleaning the edges on both sides of the second direction X and the third direction Y as described below. Here, the first direction Z, the second direction X, and the third direction Y intersect each other. When the first direction Z is vertical, the second direction X and the third direction Y can be two intersecting horizontal directions.

[0060] The electrode cleaning device 100 in this application is equipped with a pressing mechanism opposite to the bearing surface 11 of the adsorption platform 10. This allows the battery electrode 200, which is adsorbed onto the bearing surface 11 through the adsorption holes 13, to be clamped and limited by the pressing member 30 in cooperation with the bearing surface 11. At this time, the battery electrode 200 can be pressed and flattened by the pressing member 30, so that the battery electrode 200 can maintain a flat state, reducing the possibility of warping caused by the adsorption force of the adsorption holes 13. This also ensures that the distance between the laser cleaning head 50 and the battery electrode 200 remains constant during laser cleaning, and that the defocusing amount of the laser cleaning head 50 remains constant. This allows for more stable cleaning of all parts of the battery electrode 200, reducing the likelihood of burns or insufficient cleaning depth on the battery electrode 200, and improving the cleaning effect of the electrode cleaning device 100 on the battery electrode 200.

[0061] Please refer to the reference. Figures 1 to 3 In one embodiment of this application, the electrode cleaning device 100 further includes a drive member 70, which is connected to at least one of the pressing member 30 and the adsorption platform 10 to drive the pressing member 30 and the adsorption platform 10 to move closer and further away.

[0062] The driving component 70 can provide driving force to move only the pressing member 30, only the adsorption platform 10, or both the pressing member 30 and the adsorption platform 10 simultaneously. This movement includes sliding and rotation; that is, the driving component 70 can be used to drive at least one of the pressing member 30 and the adsorption platform 10 to slide or rotate. When the driving component 70 drives at least one of the pressing member 30 and the adsorption platform 10 to slide, the pressing member 30 and the adsorption platform 10 can slide closer and further apart. In this case, the driving component 70 can be a cylinder, or a combination of a motor, a lead screw, and a slide block. Furthermore, when the driving member 70 can simultaneously drive both the pressing member 30 and the adsorption platform 10, different driving members 70 can be used to drive the pressing member 30 and the adsorption platform 10 respectively. Alternatively, the same driving member 70 can be used to drive both the pressing member 30 and the adsorption platform 10. For example, the lead screw type can be set to a bidirectional lead screw, and the pressing member 30 and the adsorption platform 10 can be respectively connected to two slides sleeved on the bidirectional lead screw. When the driving member 70 drives at least one of the pressing member 30 and the adsorption platform 10 to rotate, the pressing member 30 and the adsorption platform 10 can rotate to close or rotate to open. In this case, the driving member 70 can be a motor.

[0063] In this embodiment, the driving member 70 drives at least one of the pressing member 30 and the adsorption platform 10 to move, so that the pressing member 30 and the adsorption platform 10 can move closer and further apart, thereby facilitating the placement and removal of the battery electrode 200.

[0064] Please refer to the reference. Figures 1 to 3 In one embodiment of this application, the driving member 70 is connected to the pressing member 30 and configured to drive the pressing member 30 to slide along the first direction Z.

[0065] In this embodiment, the driving member 70 is configured to drive the pressing member 30 to move up and down along the first direction Z, so that the force applied by the driving member 70 to the pressing member 30 is parallel to the direction of the clamping force on the battery electrode 200. This allows the force applied by the driving member 70 to the pressing member 30 to be fully converted into a clamping force on the battery electrode 200, thereby improving the clamping and flattening effect on the battery electrode 200. Moreover, this configuration allows the pressing member 30 and the adsorption platform 10 to move closer and further apart, while the adsorption platform 10 can be fixedly positioned so that the battery electrode 200 can be accurately placed in a preset position for cleaning. Of course, in other embodiments, the adsorption platform 10 can also be made movable, so that it can be moved to be opposite to the pressing member 30 in the first direction Z, and to be moved to be misaligned with the pressing member 30 in the first direction Z, thereby facilitating the placement and removal of the battery electrode 200 when misaligned.

[0066] Please refer to the reference. Figure 2 and Figure 5 In one embodiment of this application, the driving member 70 is further configured to drive the pressing member 30 to rotate about an axis parallel to the first direction Z, so that the pressing member 30 has a first state and a second state; in the second state, the pressing member 30 and the bearing surface 11 are misaligned in the first direction Z.

[0067] In the second state, the pressing member 30 and the bearing surface 11 are offset in the first direction Z, that is, on the projection plane perpendicular to the first direction Z, the projection of the pressing member 30 is located outside the projection of the bearing surface 11. In the first state, as shown... Figure 2 As shown, the pressing member 30 and the bearing surface 11 are positioned opposite each other in the first direction Z. In the second state, it is as follows... Figure 5 As shown, the pressing member 30 and the bearing surface 11 are offset in the first direction Z.

[0068] In this embodiment, the driving member 70 is configured to also drive the pressing member 30 to rotate around a vertical axis, allowing the pressing member 30 to rotate above the adsorption platform 10 and be positioned opposite to it; simultaneously, the pressing member 30 can also be driven to rotate away from the adsorption platform 10. Thus, when it is necessary to place or remove the battery electrode 200, the pressing member 30 can be driven to rotate away from the adsorption platform 10, preventing the pressing member 30 from interfering with the placement and removal of the battery electrode 200 from above the adsorption platform 10, thereby improving the convenience of placing and removing the battery electrode 200.

[0069] Please refer to the reference. Figure 2 and Figure 5 In one embodiment of this application, the drive component 70 is a lifting rotary cylinder.

[0070] In this embodiment, the driving component 70 is configured as a lifting and rotating cylinder, enabling it to have both lifting and rotating functions. This allows it to drive the pressing component 30 to slide along the first direction Z and rotate around an axis parallel to the first direction Z. In this case, the structure of the driving component 70 is relatively simple, which improves the ease of manufacturing and arranging the driving component 70.

[0071] Of course, this application is not limited to this. In some embodiments, the driving member 70 may also be a combination of a cylinder and a motor. In this case, the cylinder can drive the motor and the pressing member 30 to slide along the first direction Z, and the motor can drive the pressing member 30 to rotate around an axis parallel to the first direction Z.

[0072] Please refer to Figure 3In one embodiment of this application, in order to improve the compactness of the electrode cleaning device 100, the drive member 70 can be disposed on one side of the adsorption platform 10 in the second direction X, and the laser cleaning head 50 can clean the edges of the battery electrode 200 on both sides in the third direction Y.

[0073] Of course, this application is not limited to this. In one embodiment, the driving member 70 may also be disposed on the side of the pressing member 30 facing away from the adsorption platform 10.

[0074] Please refer to Figure 3 In one embodiment of this application, the pressing member 30 includes a pressing body 31 and a buffer pad 33; the buffer pad 33 is disposed on the side of the pressing body 31 facing the bearing surface 11.

[0075] The pressure-absorbing body 31 can be the main structure of the pressure-absorbing component 30, and its material can be a hard material, such as stainless steel, cast iron, aluminum alloy, copper alloy, or other hard metal materials, or a non-metallic hard material such as marble or hard plastic. The buffer pad 33 can be disposed on the lower surface of the pressure-absorbing body 31, and its material can be a soft material, such as silicone, soft plastic, or rubber. Furthermore, in the direction perpendicular to the first direction Z, the projected area of ​​the pressure-absorbing body 31 can be set to be equal to and coincide with the projected area of ​​the buffer pad 33.

[0076] In this embodiment, the pressing member 30 is configured to include a pressing body 31 and a buffer pad 33. This design prevents the pressing member 30 from deforming completely during the pressing process, thereby improving the clamping and flattening effect on the battery electrode 200 and extending the service life of the pressing member 30. The buffer pad 33 cushions the compression between the pressing member 30 and the battery electrode 200, ensuring flexible contact and reducing the possibility of pressure damage to the surface of the battery electrode 200 caused by the pressing member 30.

[0077] Please refer to Figure 3 In one embodiment of this application, the thickness of the buffer pad 33 in the first direction Z is defined as d1, which satisfies the relationship: 1 mm ≤ d1 ≤ 10 mm.

[0078] In this embodiment, the thickness d1 of the buffer pad 33 is set to between 1 mm and 10 mm. This ensures that the thickness of the buffer pad 33 is not too small, thereby improving the buffering effect between the buffer pad 33 and the battery electrode 200. At the same time, it also ensures that the thickness of the buffer pad 33 is not too large, thereby reducing the overall volume of the pressing member 30 and minimizing its space occupation. The thickness d1 of the buffer pad 33 can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm, or any value within the above range.

[0079] Please refer to Figure 4 In one embodiment of this application, on the projection plane perpendicular to the first direction Z, the projections of the two ends of the pressing member 30 in the second direction X are located outside the projection of the bearing surface 11, and the projections of the two sides of the pressing member 30 in the third direction Y are located inside the projection of the bearing surface 11. The first direction Z, the second direction X and the third direction Y intersect each other.

[0080] In this embodiment, the length of the pressing member 30 in the second direction X is set to be greater than the length of the bearing surface 11 in the second direction X, so that it protrudes from the bearing surface 11. This allows the pressing member 30 to cover and press the edges of the battery electrode 200 on both sides in the second direction X, thereby improving the clamping and flattening effect of the battery electrode 200. Furthermore, the length of the pressing member 30 in the third direction Y is set to be less than the length of the bearing surface 11 in the third direction Y, so that the projections of the pressing member 30 on both sides in the third direction Y can be located inside the projection of the bearing surface 11. This facilitates the exposure of the edges of the battery electrode 200 on both sides in the third direction Y for cleaning.

[0081] It should be noted that, in the second direction X, the distances at both ends of the pressing member 30 protruding from the bearing surface 11 on both sides of the edge in the second direction X can be set equally, for example, both ends of the pressing member 30 protruding from the bearing surface 11 by 5 mm; of course, they can also be set unequally, for example, one end of the pressing member 30 protruding from the bearing surface 11 by 5 mm, and the other end protruding from the bearing surface 11 by 8 mm.

[0082] Similarly, in the third direction Y, the distances between the edges of the pressing member 30 and the bearing surface 11 on both sides in the third direction Y can be equal or unequal.

[0083] Please refer to Figure 4 In one embodiment of this application, in the second direction X, the length of the pressing member 30 protruding from the bearing surface 11 is defined as d2, which satisfies the relationship: d2≤10mm.

[0084] In this embodiment, the length d2 of the pressing member 30 protruding from the edge of the bearing surface 11 in the second direction X is set to be less than or equal to 10 mm. This ensures that the protruding length of the pressing member 30 from the edge of the bearing surface 11 in the second direction X is not too large, thereby reducing the overall volume of the pressing member 30 and minimizing its space occupation. The protruding length d2 of the pressing member 30 can be set to 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm, or any value within the above range.

[0085] Please refer to Figure 4In one embodiment of this application, the length between the edge of the pressing member 30 and the bearing surface 11 in the third direction Y is defined as d3, which satisfies the relationship: 2 mm ≤ d3 ≤ 10 mm.

[0086] In this embodiment, the distance d3 between the edges of the pressing member 30 and the bearing surface 11 on both sides in the third direction Y is set to 2 mm to 10 mm. This ensures that the distance between the pressing member 30 and the edges of the bearing surface 11 on both sides in the third direction Y is not too small, so that when the laser cleaning head 50 cleans the edges of the battery electrode 200 on both sides in the third direction Y, the high temperature heat of the processing area affects the pressing member 30, thus improving the service life of the pressing member 30. At the same time, it also ensures that the distance between the pressing member 30 and the edges of the bearing surface 11 on both sides in the third direction Y is not too large, thereby improving the clamping and flattening effect on the battery electrode 200. The length d3 between the pressing member 30 and the edge of the bearing surface 11 can be 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm, or any value within the above range.

[0087] It should be noted that when there is only one pressing member 30, d3 refers to the distance between the two sides of the pressing member 30 in the third direction Y and the two edges of the bearing surface 11 in the third direction Y. When there are two pressing members 30 side by side as described below, d3 refers to the distance between the pressing member 30 located at the end in the third direction Y and the edge of the corresponding bearing surface 11.

[0088] Please refer to Figure 4 In one embodiment of this application, on a projection plane perpendicular to the first direction Z, the projection of the pressing member 30 covers the projection of the adsorption hole 13.

[0089] In this embodiment, the projection of the pressing member 30 covers the projection of the adsorption hole 13, that is, each adsorption hole 13 is set in the area corresponding to the pressing member 30. This allows the pressing member 30 to specifically clamp and flatten the area of ​​the battery electrode 200 that is adsorbed by the adsorption hole 13, thereby improving the flattening effect on the battery electrode 200.

[0090] Please refer to Figure 3 In one embodiment of this application, the number of pressing members 30 is at least two, and the at least two pressing members 30 are arranged side by side at intervals in the third direction Y.

[0091] In this embodiment, the number of pressing members 30 is set to at least two, and they are arranged side by side in the third direction Y. This allows for targeted clamping and flattening of the battery electrode 200 in the two regions on both sides of the bearing surface 11 in the third direction Y when adsorption holes 13 are provided, thereby improving the flattening effect on the battery electrode 200. Simultaneously, the volume of each pressing member 30 can be relatively small to reduce manufacturing costs. It should be noted that the arrangement of at least two pressing members 30 side by side in the third direction Y refers to the pressing members 30 being arranged side by side in the first state.

[0092] In one embodiment of this application, when the number of pressing members 30 is at least two, the number of driving members 70 can also be correspondingly set to at least two, so that each driving member 70 drives one pressing member 30. Of course, in other embodiments, the at least two pressing members 30 can also be driven by one driving member 70.

[0093] In one embodiment of this application, the number of pressing members 30 may also be set to one, which can cover the area of ​​the battery electrode 200 corresponding to the air intake hole.

[0094] In one embodiment of this application, the electrode cleaning device 100 further includes a picking and placing mechanism configured to pick up the battery electrode 200 to place the battery electrode 200 on the bearing surface 11 or to remove the battery electrode 200 from the bearing surface 11.

[0095] In this embodiment, the loading and unloading mechanism can automatically place the battery electrode 200 onto the bearing surface 11 or remove the battery electrode 200 from the bearing surface 11, thereby achieving automatic loading and unloading of the battery electrode 200 and improving the working efficiency of the electrode cleaning device 100. The loading and unloading mechanism can be a combination of a robotic arm and a suction cup, or it can be a combination of a cylinder and a suction cup, ensuring that it can be used to adsorb and transfer the battery electrode 200.

[0096] Please refer to the reference. Figures 1 to 5In one embodiment of this application, the electrode cleaning apparatus 100 includes an adsorption platform 10, a pressing member 30, and a laser cleaning head 50. The adsorption platform 10 has a bearing surface 11 configured to hold a battery electrode 200; the adsorption platform 10 also has adsorption holes 13 penetrating the bearing surface 11; the pressing member 30 has a first state; in the first state, the pressing member 30 and the bearing surface 11 are positioned opposite each other in a first direction Z, and are configured to cooperate with the bearing surface 11 to clamp the battery electrode 200; the laser cleaning head 50 is configured to emit a laser to clean the battery electrode 200 clamped between the pressing member 30 and the bearing surface 11. The electrode cleaning apparatus 100 also includes a driving member 70, which is connected to at least one of the pressing member 30 and the adsorption platform 10 to drive the pressing member 30 and the adsorption platform 10 to move closer and further apart. The driving member 70 is connected to the pressing member 30 and configured to drive the pressing member 30 to slide along the first direction Z. The driving member 70 is also configured to drive the pressing member 30 to rotate about an axis parallel to the first direction Z, so that the pressing member 30 has a first state and a second state; in the second state, the pressing member 30 is offset from the bearing surface 11 in the first direction Z. The driving member 70 is a lifting and rotating cylinder. The pressing member 30 includes a pressing body 31 and a buffer pad 33; the buffer pad 33 is disposed on the side of the pressing body 31 facing the bearing surface 11. The thickness of the buffer pad 33 in the first direction Z is defined as d1, satisfying the relationship: 1 mm ≤ d1 ≤ 10 mm. On the projection plane perpendicular to the first direction Z, the projections of the two ends of the pressing member 30 in the second direction X are located outside the projection of the bearing surface 11, and the projections of the two sides of the pressing member 30 in the third direction Y are located inside the projection of the bearing surface 11. The first direction Z, the second direction X, and the third direction Y intersect each other. In the second direction X, the length of the pressing member 30 protruding from the bearing surface 11 is defined as d2, satisfying the relationship: d2≤10mm; in the third direction Y, the length between the pressing member 30 and the edge of the bearing surface 11 is defined as d3, satisfying the relationship: 2mm≤d3≤10mm. On the projection plane perpendicular to the first direction Z, the projection of the pressing member 30 covers the projection of the adsorption hole 13. The number of pressing members 30 is at least two, and the at least two pressing members 30 are arranged side by side at intervals in the third direction Y.

[0097] In one embodiment of this application, the working process of the electrode cleaning device 100 can be as follows: the battery electrode 200 is placed on the bearing surface 11 of the adsorption platform 10, and the adsorption platform 10 performs vacuum adsorption on the battery electrode 200 through the adsorption holes 13; then the driving member 70 can drive the pressing member 30 to rotate around an axis parallel to the first direction Z to a first state, so that the pressing member 30 is positioned above the adsorption platform 10 and is opposite to the adsorption platform 10 in the first direction Z; then the driving member 70 can continue to drive the pressing member 30 to descend along the first direction Z and approach the adsorption platform 10, and cooperate with the adsorption platform 10 to clamp. The battery electrode 200 is held flat by pressure. Then, the laser cleaning head 50 can clean the edges of the battery electrode 200 on both sides of the third direction Y. Then, the driving member 70 can drive the pressing member 30 to rise along the first direction Z away from the adsorption platform 10 to release the battery electrode 200. Then, the driving member 70 can further drive the pressing member 30 to rotate around an axis parallel to the first direction Z to a second state, so that the pressing member 30 and the adsorption platform 10 are misaligned in the first direction Z, so that after the adsorption platform 10 releases the adsorption of the battery electrode 200, it is convenient to remove the battery electrode 200 from the bearing surface 11.

[0098] This application also proposes a battery production system, which includes an electrode cleaning device 100. The specific structure of the electrode cleaning device 100 is as described in the above embodiments. Since this battery production system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The battery production system may also include an electrode conveying device and a coating device, so that the battery electrode 200 cleaned by the cleaning device can be conveyed to the coating device via the electrode conveying device; and the coating device can apply adhesive to insulate the steps formed by laser cleaning on the edges of the battery electrode 200.

[0099] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. An electrode cleaning device, characterized in that, include: An adsorption platform having a support surface configured to hold battery electrodes; The adsorption platform is also provided with adsorption holes, which penetrate the bearing surface; A pressing member has a first state; in the first state, the pressing member is disposed opposite to the bearing surface in a first direction and is configured to cooperate with the bearing surface to clamp the battery electrode sheet; as well as A laser cleaning head configured to emit a laser to clean the battery electrodes held between the pressing member and the bearing surface.

2. The electrode cleaning device as described in claim 1, characterized in that, The electrode cleaning device further includes a driving component connected to at least one of the pressing component and the adsorption platform to drive the pressing component and the adsorption platform to move closer and further away.

3. The electrode cleaning device as described in claim 2, characterized in that, The driving member is connected to the pressing member and configured to drive the pressing member to slide along the first direction.

4. The electrode cleaning apparatus as described in claim 3, characterized in that, The driving member is further configured to drive the pressing member to rotate about an axis parallel to the first direction, so that the pressing member has the first state and the second state; In the second state, the pressing member and the bearing surface are misaligned in the first direction.

5. The electrode cleaning apparatus as described in claim 4, characterized in that, The driving component is a lifting and rotating cylinder.

6. The electrode cleaning apparatus according to any one of claims 1 to 5, characterized in that, The pressing component includes: The body is pressed against; and A buffer pad is provided on the side of the pressure-receiving body facing the bearing surface.

7. The electrode cleaning apparatus as described in claim 6, characterized in that, The thickness of the buffer pad in the first direction is defined as d1, satisfying the relationship: 1 mm ≤ d1 ≤ 10 mm.

8. The electrode cleaning apparatus according to any one of claims 1 to 5, characterized in that, On a projection plane perpendicular to the first direction, the projections of the two ends of the pressing member in the second direction are located outside the projection of the bearing surface, and the projections of the two sides of the pressing member in the third direction are located inside the projection of the bearing surface. The first direction, the second direction, and the third direction intersect each other.

9. The electrode cleaning apparatus as described in claim 8, characterized in that, In the second direction, the length of the pressing member protruding from the bearing surface is defined as d2, satisfying the relationship: d2≤10mm; And / or, in the third direction, the length between the edge of the pressing member and the bearing surface is defined as d3, satisfying the relationship: 2 mm ≤ d3 ≤ 10 mm.

10. The electrode cleaning apparatus according to any one of claims 1 to 5, characterized in that, On a projection plane perpendicular to the first direction, the projection of the pressing member overlaps the projection of the adsorption hole.

11. The electrode cleaning apparatus according to any one of claims 1 to 5, characterized in that, The number of the pressing members is at least two, and the at least two pressing members are arranged side by side at intervals in a third direction, the third direction intersecting the first direction.

12. The electrode cleaning apparatus according to any one of claims 1 to 5, characterized in that, The electrode cleaning device further includes a material picking and placing mechanism, which is configured to pick up the battery electrode to place the battery electrode on the bearing surface or to remove the battery electrode from the bearing surface.

13. A battery production system, characterized in that, Includes the electrode cleaning apparatus as described in any one of claims 1 to 12.

Images