Battery cell multi-surface laser cleaning line and battery cell laser cleaning method

Abstract

The invention provides a battery cell multi-surface laser cleaning line and a battery cell laser cleaning method. The battery cell multi-surface laser cleaning line comprises a side surface texturing mechanism, a polar column surface texturing mechanism, a bottom surface texturing mechanism and a large surface texturing mechanism which are arranged on a transmission streamline, wherein the side surface texturing mechanism and the polar column surface texturing mechanism are used for performing fixed-point scanning texturing on the polar column surface and the side surface of a battery cell in a static state of the battery cell; and the bottom surface texturing mechanism and the large surface texturing mechanism are used for continuously moving and texturing the bottom surface and the large surface of the battery cell in the process that the battery cell moves along the transmission streamline at a constant speed. Different cleaning modes are adopted for different postures of the battery cell, posture adjustment and transmission streamlines are integrated, and continuous, efficient and automatic laser texturing treatment on all six surfaces of the battery cell is achieved. And meanwhile, the laser texturing assemblies are controlled to move through the multiple servo linear modules, compatible adjustment can be made according to the specifications of different battery cells, and the high stability, compatibility and circulation capacity are achieved.

Description

Technical Field

[0001] This invention relates to a battery cell processing equipment, specifically a multi-faceted laser cleaning line and a laser cleaning method for battery cells. Background Technology

[0002] During the manufacturing process of power batteries, the surface of the battery cells typically requires cleaning or texturing to remove contaminants such as oil, oxides, and dust, thereby improving adhesion to subsequent materials like insulating films and thermally conductive adhesives. Laser texturing technology is a highly efficient and clean surface treatment method. It uses a high-energy laser beam to irradiate the battery cell surface, causing contaminants to vaporize or peel off instantly, forming a micro-rough structure on the surface, which significantly improves interfacial bonding performance. In existing battery cell laser cleaning production lines, separate workstations or equipment are usually required for processing multiple surfaces of the battery cell. The battery cell undergoes multiple loading, unloading, positioning, and attitude adjustments between different workstations, resulting in a dispersed production line layout, large footprint, and complex process connections. Furthermore, in existing technologies, battery cells require point-to-point cleaning, and the laser device is not operational during cell movement. This method fails to fully utilize the inherent high-speed cleaning performance of lasers, often requiring multiple lasers to meet production cycle requirements, leading to increased system costs and layout complexity. Therefore, improvements to existing texturing devices are needed to enhance cleaning efficiency. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a multi-faceted laser cleaning line for battery cells, which is used to perform laser texturing on six surfaces of battery cells. The cleaning line includes directionally extending transport lines (1), and a first cleaning area and a second cleaning area are provided on the transport lines.

[0004] The first cleaning zone is provided with a first cleaning unit, including a side texturing mechanism disposed on both sides of the transmission flow line and a cylindrical texturing mechanism disposed above the transmission flow line.

[0005] The second cleaning zone is equipped with a second cleaning unit, including a bottom surface texturing mechanism disposed above the transport flow line and a large surface texturing mechanism disposed on both sides of the transport flow line;

[0006] A position adjustment unit is provided between the first cleaning zone and the second cleaning zone. The position adjustment unit includes a flipping mechanism and a rotating mechanism, which are used to switch the battery cell in a first posture with the terminal surface facing up and the side facing outwards and a second posture with the bottom surface facing up and the large surface facing outwards.

[0007] Each texturing mechanism is composed of a laser texturing component, which includes a laser generator and at least one servo linear module.

[0008] The first cleaning unit is configured to drive the laser generator to move relative to the battery cell to complete the scanning texturing when the battery cell is stationary;

[0009] The second cleaning unit is configured such that, during the uniform movement of the battery cell along the transport flow line, the laser generator remains in a fixed position, thereby achieving continuous surface texturing by utilizing the movement of the battery cell.

[0010] Furthermore, the side texturing mechanism and the pole surface texturing mechanism each include a lifting module for controlling the vertical movement of the laser generator and a lateral movement module for moving in a direction perpendicular to the transmission streamline.

[0011] Furthermore, the bottom surface texturing mechanism includes a lifting module for controlling the vertical movement of the laser generator, and the large surface texturing mechanism includes a lateral movement module for controlling the laser generator to move in a direction perpendicular to the transmission streamline.

[0012] Furthermore, in the large-area texturing mechanism, two sets of laser generators are arranged vertically and horizontally on the same side, which are used to cover the upper and lower half of the large surface area of ​​the battery cell, respectively.

[0013] Furthermore, the laser generators of the side texturing mechanism and the large-area texturing mechanism are provided with light-shielding plates on opposite sides.

[0014] Furthermore, a carrier is provided on the transmission line, and a first clamping mechanism and a second clamping mechanism are provided on the carrier to maintain the posture of the battery cell in the first cleaning zone and the second cleaning zone, respectively.

[0015] Furthermore, the transmission line is a magnetic levitation conveyor line, and the carrier is connected to the moving part of the magnetic levitation conveyor line.

[0016] Furthermore, the first clamping mechanism includes a pair of first pressing blocks arranged opposite each other, and the second clamping mechanism includes a pair of second pressing blocks arranged opposite each other, with the first pressing block and the second pressing block on the same side being connected to a moving part.

[0017] The present invention also provides a method for laser cleaning of battery cells, wherein the battery cell is brought online to the transmission line in a first or second posture, and is controlled to enter the first or second cleaning area corresponding to the initial posture for laser texturing; then the battery cell is moved by a position adjustment unit, which rotates it 180° with the horizontal axis as the axis and rotates it 90° with the vertical axis as the axis, so that the battery cell is switched between the current posture and the other posture, and laser texturing is performed in the corresponding cleaning area;

[0018] The cleaning mode of the first cleaning zone is to control the laser texturing component of the first cleaning unit to move relative to the battery cell while the battery cell remains stationary, so as to perform laser texturing on the terminal surface and side surface of the battery cell; the cleaning mode of the second cleaning zone is to control the laser texturing component of the second cleaning unit to maintain a fixed position while the battery cell moves at a constant speed with the transmission flow line, so as to perform laser texturing on the bottom surface and large surface of the battery cell.

[0019] Furthermore, a CCD camera is installed on the transmission line to identify the position of the battery cell, and based on the identification result, the laser texturing components are controlled to correct the laser scanning path.

[0020] This invention provides a multi-faceted laser cleaning line for battery cells, including a side texturing mechanism, a cylindrical surface texturing mechanism, a bottom surface texturing mechanism, and a large surface texturing mechanism arranged on a transport flow line. The side texturing mechanism and the cylindrical surface texturing mechanism perform fixed-point scanning texturing of the cylindrical surface and side surface of the battery cell when the cell is stationary. The bottom surface texturing mechanism and the large surface texturing mechanism continuously texturize the bottom surface and large surface of the battery cell as the cell moves at a constant speed along the transport flow line. A position adjustment unit is provided between the first cleaning zone and the second cleaning zone to change the battery cell from a first posture with the cylindrical surface facing upwards and the side surface facing outwards to a second posture with the bottom surface facing upwards and the large surface facing outwards. This invention achieves continuous, efficient, and automated laser texturing of all six surfaces of the battery cell by using differentiated cleaning modes for different battery cell postures and integrating posture adjustment with the transport flow line. This improves overall production efficiency, and the entire cleaning process is continuously automated, reducing manual intervention and improving the overall efficiency and consistency of battery cell surface treatment, thus meeting the needs of large-scale production of power batteries.

[0021] This invention controls the movement of each laser texturing component through multiple servo linear modules, and can make compatible adjustments according to the specifications of different battery cells, exhibiting very strong stability and compatibility. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the battery cell structure;

[0023] Figure 2 This is a schematic diagram of the structure of a multi-faceted laser cleaning line for battery cells according to the present invention;

[0024] Figure 3 This is a schematic diagram of the side texturing mechanism;

[0025] Figure 4 This is a schematic diagram of the polar cylindrical texturing mechanism;

[0026] Figure 5 This is a schematic diagram of the flipping mechanism;

[0027] Figure 6This is a schematic diagram of the rotating mechanism;

[0028] Figure 7 This is a schematic diagram of the large-area texturing mechanism and the bottom-area texturing mechanism;

[0029] Figure 8 This is a structural schematic diagram of the vehicle.

[0030] Reference numerals: 1. Transmission streamline; 11. First cleaning zone; 11. Side roughening mechanism; 112. Cylindrical surface roughening mechanism; 113. Second cleaning zone; 124. Large surface roughening mechanism; 125. Bottom surface roughening mechanism;

[0031] Laser texturing component 2, bracket 21, laser generator 22, galvanometer 23, lifting module 24, horizontal movement module 25, dust removal duct 26, light shield 27;

[0032] Position adjustment unit 3, flipping mechanism 31, flipping gripper 311, flipping motor 312, flipping lifting module 313, rotating mechanism 32, rotating gripper 321, clamping cylinder 322, rotating motor 323, rotating lifting module 324;

[0033] Carrier 4, first pressure block 41, second pressure block 42, guide rail 43, moving part 44;

[0034] Cell 5, large surface 51, side surface 52, terminal surface 53, bottom surface 54, long side a, wide side b, thick side c. Detailed Implementation

[0035] like Figure 2 The diagram illustrates a multi-faceted laser cleaning line for battery cells 5, used for laser texturing of battery cells 5. The battery cell 5 includes, as shown in the diagram... Figure 1 The six surfaces to be processed shown include a cylindrical surface 53, a bottom surface 54, two large surfaces 51, and two side surfaces 52. The cylindrical surface 53 and the bottom surface 54 are opposite each other, and the other four surfaces surround the cylindrical surface 53 and the bottom surface 54. Each surface needs to be laser-textured to remove oil, dust, and other contaminants from the surface of the battery cell 5. The two sides that make up the cylindrical surface 53 and the bottom surface 54 of the battery cell 5 are defined as the thick side c and the wide side b, and the remaining side is the long side a of the battery cell 5. The laser cleaning line includes a directionally extending transport flow line 1. From the loading end to the unloading end of the transport flow line 1, a first cleaning zone 11 and a second cleaning zone 12 are arranged sequentially. The first cleaning zone 11 contains a first cleaning unit composed of a side surface texturing mechanism 111 and a cylindrical surface texturing mechanism 112. The second cleaning zone 12 contains a second cleaning unit composed of a bottom surface texturing mechanism 122 and a large surface texturing mechanism 121. As the battery cell 5 moves along the transport flow line 1, it passes through each cleaning mechanism sequentially for laser texturization.

[0036] Each hair-forming mechanism is composed of a laser hair-forming component 2, such as Figure 3 As shown, the laser texturing assembly 2 includes a support 21 and a laser generator 22 and a galvanometer 23 mounted on the support 21. The high-energy laser beam generated by the laser generator 22 is deflected by the high-speed galvanometer 23 and focused onto the surface of the battery cell 5. The energy of the laser causes surface contaminants to vaporize instantaneously, forming a texturing structure. At least one servo linear module is also mounted on the support 21. The laser generator 22 and the galvanometer 23 are connected to the output end of the servo linear module via a mounting plate. The number and direction of the servo linear modules are set according to specific requirements, enabling the laser generator 22 and the galvanometer 23 to move in space in the horizontal, vertical, and longitudinal directions. The servo linear module is connected to a control center to precisely control the movement trajectory of the laser generator 22 and adjust the laser focus position.

[0037] The laser texturing assembly 2 also includes a dust removal pipe 26 mounted on the support 21. One end of the dust removal pipe 26 is equipped with a dust removal hood and extends to the vicinity of the texturing position of the battery cell 5. This hood is used to simultaneously extract metal dust, fumes, and vaporized pollutants generated during the laser texturing process, preventing them from spreading, settling, or re-adhering to the treated surface in the processing area. Each dust removal pipe 26 is connected to a central negative pressure dust removal system and is activated according to the operation of the laser generator 22.

[0038] The first cleaning zone 11 is responsible for roughening the side surface 52 and the terminal surface 53 of the battery cell 5. The battery cell 5 enters the transmission flow line 1 from the terminal surface 53 upwards. The side roughening mechanism 111 is set on both sides of the transmission flow line 1, and the terminal surface roughening mechanism 112 is set above the transmission flow line 1. The laser irradiation surface of each roughening mechanism is set according to its position so that it can act on the surface of the battery cell 5 at the optimal incident angle.

[0039] Within the first cleaning zone 11, the battery cell 5 is positioned with its cylindrical surface 53 facing upwards and its side surface 52 facing outwards. This configuration is characterized by a smaller dimension along the transport flow line 1 and a larger dimension perpendicular to the transport flow line 1. Therefore, the texturing mode of the first cleaning zone 11 is set to fixed-point cleaning. That is, after the battery cell 5 is transported by the transport flow line 1 to the workstation of each texturing mechanism, the battery cell 5 stops moving. The laser generator 22, under the action of each servo linear module, moves along a set path to perform laser texturing on the surface of the battery cell 5. The position of the battery cell 5 can be monitored by a CCD camera mounted on the rack. When it reaches the texturing position, the transport flow line 1 stops operating, and the position of the battery cell 5 is determined.

[0040] As in Figure 3In the side texturing mechanism 111 shown, a laser generator 22-1 is mounted on a lifting module 24-1 and a transverse module 25-1 arranged perpendicular to the transmission flow line 1. Since the thickness of the battery cell 5 is relatively small and the difference in the thickness c of different specifications of battery cells 5 is small, the thickness direction is restricted during positioning. The laser generator 22-1 can align with the center of the side 52 of the battery cell 5 and cover the thick edge c of the battery cell 5. However, the width b of different battery cells 5 varies significantly. The transverse module 25-1 can adjust the distance between the laser generator 22-1 and the battery cell 5 to ensure clear alignment with the center of the side 52 of each specification of battery cell 5. Furthermore, the length a of the battery cell 5 may also vary, and the focal point of the laser generator 22-1 may not easily cover the length a of the battery cell 5. The lifting module 24-1 can drive the laser generator 22-1 to move vertically to achieve comprehensive texturing of the side 52 of the battery cell 5.

[0041] Furthermore, a light-shielding plate 27-1 is also provided inside the side texturing mechanism 111. The light-shielding plate 27-1 is located on the opposite side of the laser generator 22-1. While blocking texturing splatter, it can absorb stray reflected light and reduce the risk of laser radiation leakage.

[0042] In this embodiment, the side texturing mechanism 111 includes two sets of laser texturing components 2 arranged along the transmission flow line 1. The laser generators 22-1 of the two sets of laser texturing components 2 are respectively arranged on both sides of the transmission flow line 1 to texturize one side 52 of the battery cell 5.

[0043] And such Figure 4 The shown cylindrical surface texturing mechanism 112 is positioned above the transmission streamline 1, and its surface includes an irregular three-dimensional protrusion structure. Its laser generator 22-2 is connected to a lifting module 24-2 and a lateral movement module 25-2 positioned perpendicular to the transmission streamline 1. Similarly, because the thickness c of the battery cell 5 is limited, the differences between different specifications of battery cells 5 are minimal. When the battery cell 5 is positioned below the laser generator 22-2, the lifting module 24-2 can control the height of the laser generator 22-2, moving it relative to the cylindrical surface 53 to ensure the focal point always falls on the cylindrical surface 53, guaranteeing consistent texturing energy density. Simultaneously, the lateral movement module 25-2 can dynamically adjust the lateral position of the laser generator 22-2, completing the texturing of the cylindrical surface 53 during the movement.

[0044] Unlike the first cleaning zone 11, the battery cell 5 in the second cleaning zone 12 has its bottom surface 54 facing upwards and its large surface 51 facing outwards. This state is characterized by a smaller thickness c of the battery cell 5, meaning the dimension of the battery cell 5 perpendicular to the transport flow line 1 is smaller. Therefore, the texturing mode of the second cleaning zone 12 is set to moving cleaning. Throughout the texturing process, the position of the laser generator 22 remains unchanged, while the battery cell 5 moves at a constant speed with the transport flow line 1. The laser generator 22 continuously processes the surface of the battery cell 5 during its movement. The transport flow line 1 is equipped with a high-precision encoder to provide real-time feedback on the position of the battery cell 5. During the movement of the battery cell 5, the control center dynamically triggers laser pulses based on this signal to ensure that the laser spot forms a uniform trajectory on the surface of the moving battery cell 5.

[0045] Specifically, such as Figure 7 As shown, the bottom surface texturing mechanism 122 is located above the transmission flow line 1 and is equipped with a lifting module 24-3. Since the thickness c of the battery cell 5 is relatively small and is already centered on the transmission flow line 1, the focal point of the laser generator 22-3 can cover its thickness c, eliminating the need for a longitudinal movement module along the transmission flow line 1 for adjustment. The lifting module 24-3 can control the vertical movement of the laser generator 22-3, adjusting for the long side a of different specifications of the battery cell 5 to keep the focal point centered. During the movement of the battery cell 5, the laser focal point forms a continuous scanning trajectory relative to the bottom surface 54 of the moving battery cell 5, ultimately completing the texturing process of the entire bottom surface 54.

[0046] The large-surface texturing mechanism 121 is located on the side of the transmission flow line 1 and includes a transverse shift module 25-4. As the largest surface of the battery cell 5, the large surface 51 is enclosed by its long side a and wide side b. The laser generator 22-4 of the large-surface texturing mechanism 121 employs a line spot or wide depth-of-focus field lens design, ensuring its focal depth covers the wide side b of the battery cell 5. The transverse shift module 25-4 controls the movement of the laser generator 22-4 relative to the battery cell 5, controlling the focal point of the laser generator 22-4 to be located at the center of the large surface 51 for different specifications of the battery cell 5's thick side c. During the movement of the battery cell 5, the focal point moves along the long side a relative to the large surface 51 of the battery cell 5, ultimately completing the texturing process of the entire large surface 51.

[0047] Similar to the side texturing mechanism 111, the large-area texturing mechanism 121 includes two sets of laser texturing components 2 arranged along the transmission flow line 1. The laser generators 22-3 of the two sets of laser texturing components 2 are respectively arranged on both sides of the transmission flow line 1 to texturize one large surface 51 of the battery cell 5. The number of laser generators 22-3 in each set of laser texturing components 2 can be set to multiple as needed. For example, in this example, the number of laser texturing components 2 is set to two sets of four. The two laser generators 22-3 on the same side are staggered, one is located above the other, and the other is located below the other. Through the combined action of the two laser generators 22-3, the wide side b of the battery cell 5 is covered in the vertical direction.

[0048] The battery cell 5 of the present invention is switched between the first cleaning zone 11 and the second cleaning zone 12 by a position adjustment unit 3, which includes a flipping mechanism 31 and a rotating mechanism 32. The flipping mechanism 31 can flip the battery cell 5 180° with the horizontal direction as the rotation axis, so that the terminal surface 53 and the bottom surface 54 of the battery cell 5 are interchanged. The rotating mechanism 32 can rotate the battery cell 5 90° with the vertical direction as the rotation axis, so that the battery cell 5 changes from the state where the side 52 faces outward to the state where the large surface 51 faces outward, and finally realizes the state switching of the battery cell 5 between the first cleaning zone 11 and the second cleaning zone 12.

[0049] Specifically, such as Figure 5 As shown, the flipping mechanism 31 includes two opposing flipping grippers 311, which are positioned along the transport flow line 1 on both sides of the battery cell 5. Each flipping gripper 311 is connected to the output end of a flipping motor 312, gripping the battery cell 5 from both sides and then flipping it 180° via the flipping motor 312. The flipping motor 312 is connected to the output end of a flipping lifting module 313, controlling the up and down movement of the battery cell 5 to pick up and place the battery cell 5 from the transport flow line 1 and to avoid obstacles during the transport of the battery cell 5.

[0050] like Figure 6 As shown, the rotating mechanism 32 includes a set of rotating jaws 321, which are connected to a clamping cylinder 322. The clamping cylinder 322 controls the relative movement of the two clamping plates of the rotating jaws 321 to clamp the battery cell 5 from the side of the large surface 51. A rotary motor 323 is connected above the clamping cylinder 322. After clamping the battery cell 5, the rotary motor 323 rotates the battery cell 5 horizontally by 90°. The rotary motor 323 is also connected to the output end of a rotary lifting module 324. The rotary lifting module 324 controls the vertical movement of the battery cell 5 to pick up and place the battery cell 5 from the transmission flow line 1 and to avoid obstacles during the transmission of the battery cell 5.

[0051] Cell 5 is transported on transmission line 1 by a carrier 4, combined with Figure 8The carrier 4 has a base connected to the transmission flow line 1. The base is provided with a first positioning surface and a second positioning surface, which are respectively positioned for the battery cell 5 in two postures in the first cleaning zone 11 and the second cleaning zone 12. The structure of this carrier 4 can be referred to the utility model patent "Novel Magnetic Levitation Battery Cell Flexible Clamping Mechanism" filed by the applicant on August 23, 2024, application number 202422054275.5. The base is provided with a guide rail 43, and a first clamping mechanism and a second clamping mechanism are connected to the guide rail 43 along the direction of the transmission flow line 1. The first clamping mechanism and the second clamping mechanism are respectively composed of a pair of first pressure blocks 41 and a pair of second pressure blocks 42. The pair of first pressing blocks 41 can move relative to each other along the guide rail 43, and the space between them forms a first positioning surface. When the first pressing blocks 41 move relative to each other, they press against the side 52 of the battery cell 5 to prevent the battery cell 5 from moving. The second pressing block 42 can also move relative to each other along the guide rail 43, and the space between them forms a second positioning surface. When the second pressing block 42 moves relative to each other, it presses against the large surface 51 of the battery cell 5. Before the position adjustment unit 3 operates, the first clamping mechanism of the carrier 4 releases the battery cell 5. After the flipping and rotation are completed, the carrier 4 switches to the second clamping mechanism and re-clamps the large surface 51 of the battery cell 5 to ensure stable transport in the second cleaning zone 12.

[0052] In this embodiment, the transmission line 1 adopts a magnetic levitation conveyor line and connects the aforementioned carrier 4 to the magnetic levitation conveyor line. Specifically, the first pressure block 41 and the second pressure block 42 are divided into two groups. The first pressure block 41 and the second pressure block 42 on the same side are each connected to a moving part 44. The two moving parts 44 are controlled by servo mechanisms to realize the clamping and releasing of the battery cell 5. This magnetic levitation conveyor line has the advantages of high efficiency, high precision, high flexibility, and automation.

[0053] It should be noted that the main inventive point of this invention does not lie in the design of the carrier 4 and the magnetic levitation structure. Any type of conventional transmission flow line 1 is applicable, such as belts, rollers, and chains. Furthermore, the first and second clamping mechanisms on the carrier 4 are not limited to their cooperation with the moving part 44. Self-clamping by springs and elastic blocks, and clamping driven by cylinders and electric cylinders are all common clamping structures, enabling dual-attitude clamping capabilities of both the first and second clamping mechanisms, which can then be incorporated into the carrier 4 provided by this invention.

[0054] Based on the structure of the above-described device, the laser texturing process of the battery cell 5 using this embodiment is as follows:

[0055] The battery cell 5 is mounted on the transmission line 1 with the terminal surface 53 facing upward and the side surface 52 facing outward. In the first cleaning area 11, the terminal surface 53 and side surface 52 of the battery cell 5 are laser-textured from the top and side of the transmission line 1 respectively by the first cleaning unit.

[0056] The battery cell 5 is moved by the position adjustment unit 3, rotated 180° with the horizontal axis as the axis, and rotated 90° with the vertical axis as the axis, so that the bottom surface 54 of the battery cell 5 faces upward and the large surface 51 faces outward, and then the adjusted battery cell 5 is placed on the transmission flow line 1.

[0057] The battery cell 5 moves to the second cleaning zone 12 along the transport flow line 1, and the bottom surface 54 and the large surface 51 of the battery cell 5 are laser-textured from the top and side of the transport flow line 1, respectively, by the second cleaning unit.

[0058] The cleaning mode of the first cleaning unit is as follows: while the battery cell 5 remains stationary, the laser texturing component 2 is controlled to move relative to the battery cell 5 to complete the surface scanning texturing;

[0059] The cleaning mode of the second cleaning unit is as follows: while the battery cell 5 moves at a constant speed with the transmission line 1, the laser texturing component 2 remains in a fixed position, and the movement of the battery cell 5 is used to achieve continuous surface texturing.

[0060] It is understood that the arrangement of the first cleaning zone (11) and the second cleaning zone (12) of the present invention is not limited to the flow from the first cleaning zone (11) to the second cleaning zone (12) as described above. Based on the same inventive concept, the transmission flow line (1) can also be configured as follows: it enters the second cleaning zone (12) with its bottom surface facing up and its large surface facing outward, and its bottom surface (54) and large surface (51) are processed by the cell movement. Then, its posture is changed by the position adjustment unit (3), and its electrode surface (53) and side surface (52) are processed in the first cleaning zone (11) by the cell fixing method.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-faceted laser cleaning line for battery cells, used for laser texturing of six surfaces of a battery cell (5), characterized in that, The cleaning line includes: a directionally extending transport line (1), on which a first cleaning area (11) and a second cleaning area (12) are provided. The first cleaning zone (11) is provided with a first cleaning unit, including a side texturing mechanism (111) disposed on both sides of the transmission flow line (1) and a cylindrical texturing mechanism (112) disposed above the transmission flow line (1). The second cleaning zone (12) is provided with a second cleaning unit, including a bottom surface texturing mechanism (122) disposed above the transmission flow line (1) and a large surface texturing mechanism (121) disposed on both sides of the transmission flow line (1). A position adjustment unit (3) is provided between the first cleaning zone (11) and the second cleaning zone (12). The position adjustment unit (3) includes a flipping mechanism (31) and a rotating mechanism (32) for converting the battery cell (5) into a first posture with the terminal surface (53) facing up and the side surface (52) facing outward and a second posture with the bottom surface (54) facing up and the large surface (51) facing outward. Each texturing mechanism is composed of a laser texturing component (2), which includes a laser generator (22) and at least one servo linear module; The first cleaning unit is configured to drive the laser generator (22) to move relative to the battery cell (5) in a stationary state by driving the servo linear module to complete the scanning texturing; The second cleaning unit is configured such that during the uniform movement of the battery cell (5) along the transport streamline (1), the laser generator (22) remains in a fixed position, and the movement of the battery cell (5) is used to achieve continuous surface texturing.

2. The multi-faceted laser cleaning line for battery cells as described in claim 1, characterized in that: The side texturing mechanism (111) and the cylindrical texturing mechanism (112) each include a lifting module (24) that controls the vertical movement of the laser generator (22) and a lateral movement module (25) that moves in a direction perpendicular to the transmission streamline (1).

3. The multi-faceted laser cleaning line for battery cells as described in claim 1, characterized in that: The bottom surface texturing mechanism (122) includes a lifting module (24) for controlling the vertical movement of the laser generator (22), and the large surface texturing mechanism (121) includes a transverse module (25) for controlling the laser generator (22) to move in a direction perpendicular to the transmission streamline (1).

4. The multi-faceted laser cleaning line for battery cells as described in claim 3, characterized in that: In the large-area texturing mechanism (121), two sets of laser generators (22) are arranged vertically and vertically on the same side, which are used to cover the upper and lower half of the large surface (51) of the battery cell (5), respectively.

5. The multi-faceted laser cleaning line for battery cells as described in claim 1, characterized in that: The laser generators (22) of the side texturing mechanism (111) and the large-area texturing mechanism (121) are provided with light shields (27) on opposite sides.

6. The multi-faceted laser cleaning line for battery cells as described in claim 1, characterized in that: A carrier (4) is provided on the transmission flow line (1), and a first clamping mechanism and a second clamping mechanism are provided on the carrier (4) to maintain the posture of the battery cell (5) in the first cleaning zone (11) and the second cleaning zone (12) respectively.

7. The multi-faceted laser cleaning line for battery cells as described in claim 6, characterized in that: The transmission line (1) is a magnetic levitation conveyor line, and the carrier (4) is connected to the moving part (44) of the magnetic levitation conveyor line.

8. The multi-faceted laser cleaning line for battery cells as described in claim 7, characterized in that: The first clamping mechanism includes a pair of first pressure blocks (41) arranged opposite to each other, and the second clamping mechanism includes a pair of second pressure blocks (42) arranged opposite to each other. The first pressure blocks (41) and the second pressure blocks (42) on the same side are connected together to a moving part (44).

9. A method for laser cleaning of battery cells, characterized in that, Includes the following steps: The battery cell (5) is brought online to the transmission flow line (1) in a first or second posture, and is controlled to enter the first cleaning area (11) or the second cleaning area (12) corresponding to the initial posture for laser texturing. Then, the battery cell (5) is moved by the position adjustment unit (3), so that it is rotated 180° with the horizontal axis as the axis and rotated 90° with the vertical axis as the axis, so that the battery cell (5) is switched between the current posture and another posture, and laser texturing is performed in its corresponding cleaning area. The cleaning mode of the first cleaning zone (11) is to control the laser texturing component (2) of the first cleaning unit to move relative to the battery cell (5) while the battery cell (5) remains stationary, so as to perform laser texturing on the electrode surface (53) and side surface (52) of the battery cell (5); the cleaning mode of the second cleaning zone (12) is to control the laser texturing component (2) of the second cleaning unit to maintain a fixed position while the battery cell (5) moves at a constant speed with the transmission flow line (1), so as to perform laser texturing on the bottom surface (54) and large surface (51) of the battery cell (5).

10. The cell laser cleaning method as described in claim 9, characterized in that: A CCD camera (28) is installed on the transmission flow line (1) to identify the position of the cell (5) and control each laser texturing component (2) to correct the laser scanning path based on the identification result.

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