An upper surface protection film rolling detection mechanism for an electric cell

Abstract

The application provides an upper surface protection film rolling detection mechanism of an electric core, which comprises a clamping roller assembly, a second XYZ driving module, a protection film rolling platform device, an upper surface protection film detection device of the electric core and a lower surface protection film detection device of the electric core. The clamping roller assembly is driven by the second XYZ driving module to complete the upper surface film pasting of the electric core on the protection film rolling platform device; the lower surface protection film detection device of the electric core grasps the electric core after the film pasting and moves the electric core to the upper surface protection film detection device of the electric core to complete the upper surface detection, and then the same electric core is grasped again and the lower surface protection film detection is directly performed in the moving process or in a fixed station, and the upper surface of the electric core is kept in an upward posture and does not need to be turned over. Through the spatial layout and cooperative control of the detection device, the double-side turn-over-free detection is realized in a single posture, the damage risk, positioning error and time loss of the electric core caused by the traditional turn-over mechanism are completely eliminated, and the detection safety and efficiency are significantly improved.

Description

Technical Field

[0001] This application relates to the field of battery cell film application equipment, and in particular to a battery cell upper surface protective film rolling test mechanism. Background Technology

[0002] In the production process of lithium battery cells, a protective film is usually applied to the upper and lower surfaces of the cell to protect the cell tabs and the surface of the casing. The quality of the application of this protective film (such as bubbles, wrinkles, misalignment, etc.) directly affects the product yield and safety performance. Therefore, automated inspection of the double-sided protective film after the film application process is an essential step.

[0003] Currently, automated equipment is widely used in the roll bonding of protective films for battery cells. This typically includes a clamping roller assembly for holding and rolling the protective film, a module for driving the rollers, and a bonding platform that carries the battery cell and the protective film. However, after the upper surface is bonded, efficiently and reliably inspecting the quality of the protective film on the lower surface of the battery cell remains a key challenge.

[0004] In existing technologies, a cell flipping mechanism is generally required to inspect the protective film on the lower surface of a battery cell. The common practice is to use a robotic arm or a dedicated flipping device to flip the entire cell 180 degrees after the upper surface film is applied and inspected, so that the original lower surface faces upwards, before visual or manual inspection of the lower surface protective film can be performed. This flipping operation has significant drawbacks: the flipping mechanism (such as a flipping cylinder or servo flipping table) and its control system increase equipment complexity and manufacturing costs. Utility Model Content

[0005] The purpose of this application is to provide a battery cell upper surface protective film rolling test mechanism that enables efficient, non-destructive, and reliable quality inspection of the protective film on the upper and lower surfaces of the battery cell without requiring the battery cell to be flipped.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A battery cell upper surface protective film rolling inspection mechanism includes a clamping roller assembly, a second XYZ drive module, a protective film rolling platform device, a battery cell upper surface protective film inspection device, and a battery cell lower surface protective film inspection device. The clamping roller assembly is mounted on the second XYZ drive module. The protective film rolling platform device is located in front of the clamping roller assembly and is used to support the protective film and the battery cell. Under the drive of the second XYZ drive module, the clamping roller assembly clamps the protective film and rolls it onto the upper surface of the battery cell. The battery cell lower surface protective film inspection device is located on one side of the protective film rolling platform device and is used to pick up the battery cell after the protective film has been applied by the protective film rolling platform device and inspect the upper surface protective film at the battery cell upper surface protective film inspection device. The battery cell upper surface protective film inspection device is located on one side of the battery cell lower surface protective film inspection device. After the upper surface protective film is inspected, the battery cell lower surface protective film inspection device picks up the battery cell and inspects the lower surface protective film.

[0008] Furthermore, the clamping roller assembly includes an upper clamping roller, a lower clamping roller, and a clamping roller lifting drive module. The upper clamping roller is mounted on the clamping roller lifting drive module, and the lower clamping roller is arranged vertically opposite to the upper clamping roller. The clamping roller lifting drive module is used to drive the upper clamping roller to move closer to or away from the lower clamping roller.

[0009] Furthermore, the second XYZ drive module includes a second Z-axis module, a second Y-axis module, and a second X-axis module. The second Z-axis module is mounted on the second Y-axis module, and the second Y-axis module is mounted on the second X-axis module.

[0010] Furthermore, the protective film roller pressing platform device includes a battery cell placement vacuum adsorption platform and a protective film placement vacuum adsorption platform.

[0011] Furthermore, the battery cell lower surface protective film detection device includes a second battery cell moving platform and a battery cell lower surface detection CCD module. The second battery cell moving platform is used to pick up the battery cell from the protective film rolling platform device and bring it to the battery cell upper surface protective film detection device for detection. After detection, the second battery cell moving platform then transfers the battery cell to the battery cell lower surface detection CCD module. The battery cell lower surface detection CCD module is used to detect whether the protective film attached to the lower surface of the battery cell is defective.

[0012] Furthermore, the second cell moving platform includes a first vacuum adsorption lateral movement module and a second vacuum adsorption lateral movement module. The first vacuum adsorption lateral movement module is disposed on one side of the second vacuum adsorption lateral movement module, and the first vacuum adsorption lateral movement module and the second vacuum adsorption lateral movement module move laterally synchronously.

[0013] The beneficial effects of this application are as follows:

[0014] This application, through the cell lower surface protective film detection device's process of grasping and transferring the cell to the cell upper surface protective film detection device, and the arrangement of the upper surface protective film detection device itself, eliminates the need for any flipping mechanism or flipping action. It allows for the sequential detection of the upper and lower surface protective films of the cell while maintaining the cell in the same orientation (upper surface facing upwards). This fundamentally eliminates the problems caused by flipping operations, such as increased mechanism complexity, risk of cell damage, decreased positioning accuracy, and additional time consumption, significantly improving the reliability, safety, and efficiency of the detection process. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the clamping roller assembly, the second XYZ drive module, and the protective film roller pressing platform device provided in an embodiment of this application;

[0016] Figure 2 for Figure 1 A magnified view of the area at point B;

[0017] Figure 3 This is a schematic diagram of the structure of a battery cell upper surface protective film detection device provided in an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the structure of a battery cell lower surface protective film detection device provided in an embodiment of this application;

[0019] Explanation of reference numerals in the attached figures:

[0020] 510. Grip roller assembly; 520. Second XYZ drive module; 530. Protective film roller pressing platform device;

[0021] 511. Upper clamping roller; 512. Lower clamping roller; 513. Clamping roller lifting drive module;

[0022] 521. Second Z-axis module; 522. Second Y-axis module; 523. Second X-axis module;

[0023] 531. The battery cell is placed on a vacuum adsorption platform; 532. The protective film is placed on a vacuum adsorption platform;

[0024] 610. Detection device for protective film on the upper surface of battery cell; 620. Detection device for protective film on the lower surface of battery cell;

[0025] 611. First cell moving platform; 612. Cell upper surface detection CCD module;

[0026] 621. Second cell moving platform; 622. Cell lower surface detection CCD module;

[0027] 6211, First vacuum adsorption transverse transfer module; 6212, Second vacuum adsorption transverse transfer module; Detailed Implementation

[0028] 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 some embodiments of this application, and not all 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.

[0029] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," etc., are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In particular, the understanding of the term "upper" following a noun in the claims should be understood as meaning that the entire inner and outer surfaces of the structure referred to by the noun conform to the definition of "upper."

[0030] The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation methods, structures, features, and effects provided in this application.

[0031] like Figures 1 to 4 As shown, a battery cell upper surface protective film rolling detection mechanism includes a clamping roller assembly 510, a second XYZ drive module 520, a protective film rolling platform device 530, a battery cell upper surface protective film detection device 610, and a battery cell lower surface protective film detection device 620. The clamping roller assembly 510 is mounted on the second XYZ drive module 520, and the protective film rolling platform device 530 is disposed in front of the clamping roller assembly 510. The protective film rolling platform is used to support the protective film and the battery cell. The clamping roller assembly 510 clamps the battery cell under the drive of the second XYZ drive module 520. The protective film is held and rolled onto the upper surface of the battery cell. The lower surface protective film detection device 620 is set on one side of the protective film rolling platform device 530. It is used to pick up the battery cell after the protective film is applied by the protective film rolling platform device 530 and move it to the upper surface protective film detection device 610 to detect the upper surface protective film. The upper surface protective film detection device 610 is set on one side of the lower surface protective film detection device 620. After the upper surface protective film is detected, the lower surface protective film detection device 620 picks up the battery cell to detect the lower surface protective film.

[0032] The specific working principle of the cell surface protective film rolling test mechanism is as follows:

[0033] First, the battery cell and protective film placed on the protective film rolling platform device 530 are clamped by the clamping roller assembly 510 installed on the second XYZ drive module 520, holding the protective film close to the edge of the battery cell. Under the drive of this module, the protective film is rolled onto the upper surface of the battery cell along a preset trajectory, completing the upper surface film application. Subsequently, the lower surface protective film detection device 620 picks up the battery cell with the film applied (always keeping the upper surface facing upwards) from the rolling platform and transfers it to the adjacent upper surface protective film detection device 610 for upper surface protective film quality inspection. After the upper surface inspection is completed, the lower surface protective film detection device 620 picks up the battery cell again (still keeping the upper surface facing upwards), and inspects the lower surface protective film of the battery cell directly during the transfer process or at a fixed station, without any flipping action. Finally, the battery cell that has completed double-sided inspection is transferred to the unloading station by the lower surface protective film detection device 620.

[0034] like Figure 2 As shown, in one embodiment, the clamping roller assembly 510 includes an upper clamping roller 511, a lower clamping roller 512, and a clamping roller lifting drive module 513. The upper clamping roller 511 is mounted on the clamping roller lifting drive module 513, and the lower clamping roller 512 is arranged vertically opposite to the upper clamping roller 511. The clamping roller lifting drive module 513 is used to drive the upper clamping roller 511 closer to or further away from the lower clamping roller 512. Through precise pressure control of the upper and lower clamping rollers 512, it is ensured that the protective film on the upper surface adheres without air bubbles.

[0035] In one embodiment, the second XYZ drive module 520 includes a second Z-axis module 521, a second Y-axis module 522, and a second X-axis module 523. The second Z-axis module 521 is mounted on the second Y-axis module 522, and the second Y-axis module 522 is mounted on the second X-axis module 523. The three-axis coordinated drive enables precise three-dimensional positioning of the clamping roller, ensuring the consistency of the film application trajectory.

[0036] In one embodiment, the protective film roller pressing platform device 530 includes a battery cell placement vacuum adsorption platform 531 and a protective film placement vacuum adsorption platform 532. The dual vacuum adsorption platforms respectively fix the battery cell and the protective film to prevent relative displacement during the film application process.

[0037] like Figure 4As shown, in one embodiment, the battery cell lower surface protective film detection device 620 includes a second battery cell moving platform 621 and a battery cell lower surface detection CCD module 622. The second battery cell moving platform 621 is used to pick up the battery cell from the protective film rolling platform device 530 and bring it to the battery cell upper surface protective film detection device 610 for detection. After detection, the second battery cell moving platform 621 then transfers the battery cell to the battery cell lower surface detection CCD module 622, which is used to detect whether the protective film attached to the lower surface of the battery cell has defects. The moving platform and the CCD module work together to simultaneously complete the lower surface detection during the picking and transferring process.

[0038] In one embodiment, the second cell moving platform 621 includes a first vacuum adsorption lateral movement module 6211 and a second vacuum adsorption lateral movement module 6212. The first vacuum adsorption lateral movement module 6211 is disposed on one side of the second vacuum adsorption lateral movement module 6212, and the first vacuum adsorption lateral movement module 6211 and the second vacuum adsorption lateral movement module 6212 move laterally synchronously. The synchronous lateral movement of the two adsorption modules enables seamless transfer of the cell between the upper and lower surface inspection stations.

[0039] like Figure 3 As shown, the battery cell upper surface protective film detection device 610 includes a first battery cell moving platform 611 and a battery cell upper surface detection CCD module 612; the first battery cell moving platform 611 is disposed below the battery cell upper surface detection CCD module 612 and is used to drive the battery cell to move.

[0040] The embodiments described above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A cell upper surface protective film rolling test mechanism, characterized in that: The device includes a clamping roller assembly, a second XYZ drive module, a protective film rolling platform device, a cell upper surface protective film detection device, and a cell lower surface protective film detection device. The clamping roller assembly is mounted on the second XYZ drive module. The protective film rolling platform device is located in front of the clamping roller assembly and is used to support the protective film and the cell. Driven by the second XYZ drive module, the clamping roller assembly clamps the protective film and rolls it onto the upper surface of the cell. The cell lower surface protective film detection device is located on one side of the protective film rolling platform device and is used to pick up the cell after the protective film has been applied by the protective film rolling platform device and proceed to the cell upper surface protective film detection device for detection. The cell upper surface protective film detection device is located on one side of the cell lower surface protective film detection device. After the cell upper surface protective film is detected, the cell lower surface protective film detection device picks up the cell for detection of the cell lower surface protective film.

2. The mechanism for detecting the rolling of the upper surface protection film of the battery cell according to claim 1, wherein: The clamping roller assembly includes an upper clamping roller, a lower clamping roller, and a clamping roller lifting drive module. The upper clamping roller is mounted on the clamping roller lifting drive module, and the lower clamping roller is arranged vertically opposite to the upper clamping roller. The clamping roller lifting drive module is used to drive the upper clamping roller to move closer to or away from the lower clamping roller.

3. The mechanism for detecting the rolling of the upper surface protection film of the battery cell according to claim 1, characterized in that: The second XYZ drive module includes a second Z-axis module, a second Y-axis module, and a second X-axis module. The second Z-axis module is mounted on the second Y-axis module, and the second Y-axis module is mounted on the second X-axis module.

4. The mechanism for detecting the rolling of the upper surface protection film of the battery cell according to claim 1, wherein: The protective film roller pressing platform device includes a battery cell placement vacuum adsorption platform and a protective film placement vacuum adsorption platform.

5. The mechanism for detecting the rolling of the upper surface protection film of the battery cell according to claim 1, wherein: The battery cell lower surface protective film detection device includes a second battery cell moving platform and a battery cell lower surface detection CCD module. The second battery cell moving platform is used to pick up the battery cell from the protective film rolling platform device and bring it to the battery cell upper surface protective film detection device for detection. After detection, the second battery cell moving platform then transfers the battery cell to the battery cell lower surface detection CCD module. The battery cell lower surface detection CCD module is used to detect whether the protective film attached to the lower surface of the battery cell is defective.

6. The mechanism for detecting the rolling of the upper surface protection film of the battery cell according to claim 5, wherein: The second cell moving platform includes a first vacuum adsorption lateral movement module and a second vacuum adsorption lateral movement module. The first vacuum adsorption lateral movement module is disposed on one side of the second vacuum adsorption lateral movement module, and the first vacuum adsorption lateral movement module and the second vacuum adsorption lateral movement module move laterally synchronously.

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