Protective film removal equipment for battery cells

Abstract

The present invention discloses a protective film removal device for a battery cell, comprising a processing unit and a removal unit, wherein the processing unit comprises a first clamping device and a laser instrument, wherein the first clamping device is suitable for clamping the battery cell and for driving the battery cell to rotate, and the laser instrument is suitable for processing the protective film of the battery cell; the removal unit comprises a removal device, and the removal device is suitable for removing the protective film of the battery cell. The protective film removal device for a battery cell according to the present invention can fully automatically remove the protective film, is easy to use, has high removal efficiency, and has low labor costs.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a protective film removal device for battery cells. Background Art

[0002] With the popularity of new energy vehicles, green recycling of power batteries has become urgent. The battery cell consists of an aluminum shell and a blue film that protects the battery cell. The blue film is wrapped around the outer surface of the aluminum shell and insulated. The blue film is bonded to the aluminum shell. The blue film is used to protect the battery cell during battery production, and the blue film of the battery cell needs to be removed when the battery is disassembled.

[0003] In the related art, the blue film is usually torn off manually, which leaves a lot of residue on the surface after tearing off, resulting in low processing efficiency and high labor cost. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a protective film removal device for a battery cell, which can fully automatically remove the protective film, is easy to use, has high removal efficiency, and has low labor costs.

[0005] According to an embodiment of the present invention, a protective film removal device for a battery cell includes: a processing unit, the processing unit includes a first clamping device and a laser instrument, the first clamping device is suitable for clamping the battery cell and for driving the battery cell to rotate, and the laser instrument is suitable for processing the protective film of the battery cell; a removal unit, the removal unit includes a removal device, and the removal device is suitable for removing the protective film of the battery cell.

[0006] According to the protective film removal device for the battery cell of the present invention, the protective film can be automatically removed, the difficulty of operation is reduced, the convenience of removal is improved, and thus the use efficiency of the removal device is improved. In addition, the dependence of the removal device on the staff during use is reduced, thereby reducing labor costs. In addition, no chemical solvent is used to dissolve the colloid between the protective film of the battery cell and the shell of the battery cell, thereby effectively avoiding the generation of toxic and harmful gases, thereby improving the safety of use.

[0007] According to some embodiments of the present invention, the outer surface of the battery cell includes a first surface and a second surface, the area of ​​the first surface is smaller than the area of ​​the second surface; the laser is suitable for removing the protective film on the first surface and for passivating the protective film on the second surface.

[0008] According to some embodiments of the present invention, the processing unit further comprises a processing workbench, and the first clamping device and the laser instrument are both arranged on the processing workbench.

[0009] According to some embodiments of the present invention, the removal unit also includes a removal workbench and a second clamping device, the second clamping device and the removal device are both arranged on the removal workbench, and the second clamping device is suitable for clamping the processed battery cell and for driving the battery cell to rotate.

[0010] According to some embodiments of the present invention, the processing unit further includes: a first mounting frame, the first mounting frame is arranged on the processing workbench, the first clamping device and the laser instrument are both arranged on the first mounting frame, and the first clamping device is located below the laser instrument.

[0011] According to some embodiments of the present invention, the first mounting frame is provided with two first guide rails which are spaced apart and movable in the up and down directions; the first clamping device includes two first clamping mechanisms, which are respectively movably arranged on the two first guide rails along the arrangement direction of the processing workbench and the removal workbench, and the two first clamping mechanisms are suitable for clamping the battery cells and for driving the battery cells to rotate.

[0012] According to some embodiments of the present invention, the processing unit further includes: two first laser instrument moving rails, which are arranged at intervals; a second laser instrument moving rail, which is movably arranged between the two first laser instrument moving rails along the arrangement direction of the processing workbench and the removal workbench; and a third laser instrument moving rail, which is movably arranged on the second laser instrument moving rail, and the laser is movably arranged on the third laser instrument moving rail up and down.

[0013] According to some embodiments of the present invention, the removal unit further includes: a second mounting frame, the second mounting frame is arranged on the removal workbench, the second clamping device and the removal device are both arranged on the second mounting frame, and the second clamping device is located below the removal device.

[0014] According to some embodiments of the present invention, the second mounting frame is provided with two second guide rails which are spaced apart and movable in the up and down directions; the second clamping device includes two second clamping mechanisms, which are respectively movably arranged on the two second guide rails along the arrangement direction of the processing workbench and the removal workbench, and the two second clamping mechanisms are suitable for clamping the processed battery cells and for driving the battery cells to rotate.

[0015] According to some embodiments of the present invention, the removal unit further includes: two first removal device moving guide rails, the two first removal device moving guide rails are arranged at intervals; a second removal device moving guide rail, the second removal device moving guide rail is movably arranged between the two first removal device moving guide rails along the arrangement direction of the processing workbench and the removal workbench; a third removal device moving guide rail, the third removal device moving guide rail is movably arranged on the second removal device moving guide rail, and the removal device is movably arranged on the third removal device moving guide rail up and down.

[0016] According to some embodiments of the present invention, the removal device further includes: a transfer guide rail, the transfer guide rail includes a first transfer guide rail and a second transfer guide rail, the first transfer guide rail is arranged on the processing workbench, the second transfer guide rail is arranged on the removal workbench, the second transfer guide rail is docked with the first transfer guide rail along the arrangement direction of the processing workbench and the removal workbench; a tray, the tray is movably arranged on the transfer guide rail, and the battery cell is suitable for being arranged on the tray.

[0017] According to some embodiments of the invention, the removal device comprises a suction cup.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of a removal device according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 The enlarged view of the part B shown in the middle circle;

[0022] Figure 3 is a schematic diagram of a removal unit of a removal device according to an embodiment of the present invention;

[0023] Figure 4 yes Figure 3 Enlarged view of section A shown in the middle circle.

[0024] Reference numerals:

[0025] 100. Remove equipment;

[0026] 1. Processing unit; 11. Processing workbench; 12. First clamping device; 121. First clamping mechanism;

[0027] 13. Laser instrument; 14. First mounting frame; 141. First guide rail; 142. First sliding guide rail;

[0028] 15. The first laser instrument moving guide rail; 16. The second laser instrument moving guide rail; 17. The third laser instrument moving guide rail;

[0029] 2. Removal unit; 21. Removal workbench; 22. Second clamping device; 221. Second clamping mechanism;

[0030] 23. Removal device; 24. Second mounting frame; 241. Second guide rail; 242. Second sliding guide rail;

[0031] 25. A first removal device moving guide rail; 26. A second removal device moving guide rail;

[0032] 27. The third removal device moves the guide rail;

[0033] 3. Transmission rail; 31. First transmission rail; 32. Second transmission rail;

[0034] 4. Tray; 5. Suction cup; 6. Robotic arm;

[0035] 200, battery cell;

[0036] 201, protective film; 202, first surface; 203, second surface; 204, pole. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 4 A protective film 201 removal apparatus 100 for a battery cell 200 according to an embodiment of the present invention is described.

[0038] like Figure 1 and Figure 3 As shown, a device 100 for removing a protective film 201 of a battery cell 200 according to an embodiment of the present invention includes a processing unit 1 and a removing unit 2 .

[0039] Specifically, the processing unit 1 includes a first clamping device 12 and a laser instrument 13. The first clamping device 12 is suitable for clamping the battery cell 200 and for driving the battery cell 200 to rotate. The laser instrument 13 is suitable for processing the protective film 201 of the battery cell 200. For example, in the present application, the processing unit 1 includes a processing workbench 11, a first clamping device 12 and a laser instrument 13.

[0040] For example, in Figure 1 and Figure 3In the example of , the first clamping device 12 and the laser instrument 13 are respectively movable on the processing workbench 11, and the first clamping device 12 is suitable for driving the battery cell 200 to rotate around the central axis of the battery cell 200. For example, taking the cross-sectional shape of the battery cell 200 as a rectangle as an example, the process of the processing unit 1 processing the protective film 201 (such as a blue film) of the battery cell 200 is roughly as follows:

[0041] First, the battery cell 200 is clamped and fixed by the first clamping device 12, and one surface of the battery cell 200 is facing the laser instrument 13. Then, the laser instrument 13 is turned on, and the laser emitted by the laser instrument 13 is irradiated onto the above-mentioned one surface of the battery cell 200 to process the protective film 201 on the corresponding surface of the battery cell 200, and the adhesive force of the protective film 201 after the treatment is reduced. After the treatment is completed, the laser instrument 13 is turned off.

[0042] Next, the first clamping device 12 drives the battery cell 200 to rotate axially along the center line of the battery cell 200 (for example, rotate 90 degrees), so that the other surface of the battery cell 200 faces the laser instrument 13. Then, the laser instrument 13 is turned on, and the laser emitted by the laser instrument 13 is irradiated onto the other surface of the battery cell 200 to process the protective film 201 on the corresponding surface of the battery cell 200. After the processing is completed, the laser instrument 13 is turned off. Repeatedly, the protective film 201 on the outer peripheral surface of the battery cell 200 is processed in turn.

[0043] With such a configuration, the protective film 201 of the battery cell 200 can be processed along the circumference of the battery cell 200 to facilitate the removal of the protective film 201, thereby improving the performance of the processing unit 1. In addition, the automated processing method is easy to operate, thereby improving the processing efficiency of the protective film 201, and further improving the working efficiency of the removal device 100.

[0044] Combination Figure 1 , the removal unit 2 includes a removal device 23, and the removal device 23 is suitable for removing the protective film 201 of the battery cell 200. For example, in the present application, the removal unit 2 includes a removal workbench 21, a second clamping device 22 and a removal device 23 as an example for explanation. Of course, the removal unit 2 and the processing unit 1 can share the first clamping device 12, that is, the first clamping device 12 clamps the battery cell 200 and moves it to the removal device 23 for processing. Similarly, the removal unit 2 and the processing unit 1 can both be arranged on the same workbench, such as the processing workbench 11.

[0045] For example, in Figure 1In the example, the second clamping device 22 and the removal device 23 are movable on the removal workbench 21 respectively. The process of the removal unit 2 processing the protective film 201 of the battery cell 200 is roughly as follows: First, the battery cell 200 is clamped and fixed by the second clamping device 22, so that one of the outer peripheral surfaces of the battery cell 200 faces the removal device 23. Then, the removal device 23 is turned on, and the removal device 23 removes the protective film 201 on the above-mentioned one surface of the battery cell 200, and the removal device 23 is closed after the removal is completed. Next, the second clamping device 22 drives the battery cell 200 to rotate axially along the center line of the battery cell 200 (for example, rotate 180°), so that the other surface of the battery cell 200 faces the removal device 23. Subsequently, the removal device 23 is turned on again, and the removal device 23 removes the protective film 201 on the other surface of the battery cell 200, and the removal device 23 is closed after the removal is completed. The protective film 201 on the outer peripheral surface of the battery cell 200 is removed in sequence.

[0046] With such an arrangement, compared with the traditional technology of manually removing the blue film after using chemical solvents to reduce the adhesion of the blue film, the present application uses a fully automated removal device 100 to remove the protective film 201, which reduces the operating difficulty of the staff, thereby improving the removal efficiency, and further improving the working efficiency of the removal device 100. Moreover, it is simple to operate and easy to use. In addition, the dependence of the removal device 100 on the staff during use is reduced, thereby reducing labor costs. In addition, in the process of removing the protective film 201 by the removal device 100, no chemical solvents (such as degumming solvents) are used to assist in dissolving the colloid between the protective film 201 of the battery cell 200 and the shell of the battery cell 200, thereby effectively avoiding the generation of toxic and harmful gases, thereby improving the safety of use.

[0047] According to the device 100 for removing the protective film 201 of the battery cell 200 of the present invention, the protective film 201 can be automatically removed, which reduces the difficulty of operation and improves the convenience of removal, thereby improving the use efficiency of the removal device 100. In addition, the dependence of the removal device 100 on the staff during use is reduced, thereby reducing labor costs. In addition, no chemical solvent is used to dissolve the colloid between the protective film 201 of the battery cell 200 and the shell of the battery cell 200, thereby effectively avoiding the generation of toxic and harmful gases, thereby improving the safety of use.

[0048] According to some embodiments of the present invention, referring to Figure 1 and Figure 3, the processing unit 1 also includes a processing workbench 11, and the first clamping device 12 and the laser instrument 13 are both arranged on the processing workbench 11. The removal unit 2 also includes a removal workbench 21 and a second clamping device 22, and the second clamping device 22 and the removal device 23 are both arranged on the removal workbench 21, and the second clamping device 22 is suitable for clamping the processed battery cell 200 and for driving the battery cell 200 to rotate. In this way, the processing unit 1 and the removal unit 2 are independent of each other and cooperate with each other. The independence means that when the battery cell 200 is located in the processing unit 1, the battery cell 200 can be moved on the processing workbench 11 driven by the first clamping device 12 for laser processing, and the processing process will not affect the progress of the removal unit 2, so that the processing unit 1 and the removal unit 2 can work synchronously to improve the working efficiency of the removal device 100.

[0049] According to some embodiments of the present invention, referring to Figure 3 and Figure 4 The outer surface of the battery cell 200 includes a first surface 202 and a second surface 203, and the area of ​​the first surface 202 is smaller than the area of ​​the second surface 203. The laser 13 is suitable for removing the protective film 201 on the first surface 202 and passivating the protective film 201 on the second surface 203.

[0050] For example, in Figure 3 and Figure 4 In the example, the shape of the battery cell 200 is roughly rectangular. Along the circumference of the battery cell 200, the surface with a smaller width on the outer surface of the battery cell 200 is the first surface 202 (i.e., the narrow surface of the battery cell 200), and the surface with a larger width on the outer surface of the battery cell 200 is the second surface 203 (i.e., the wide surface of the battery cell 200). In the process of the laser instrument 13 processing the protective film 201, when the working power of the laser instrument 13 is large, the protective film 201 on the first surface 202 can be directly removed by the irradiation of the laser instrument 13, that is, the protective film 201 on the surface of the battery cell 200 is directly removed. When the working power of the laser instrument 13 is small, the laser instrument 13 is suitable for passivating the protective film 201 on the second surface 203, that is, reducing the adhesion between the protective film 201 and the shell of the battery cell 200. The power of the laser instrument 13 irradiating the first surface 202 is greater than the power of the laser instrument 13 irradiating the second surface 203.

[0051] With such a configuration, after the protective film 201 of the battery cell 200 is passivated, the protective film 201 can be easily removed by using the removal device 23, and the protective film 201 on the first surface 202 with a smaller area can be removed by using a high-power laser 13, which not only shortens the use time of the laser 13 using high power, thereby extending the service life of the laser 13, but also saves the step of using the removal device 23 to remove the protective film 201 on the first surface 202. In addition, in view of the different areas of the first surface 202 and the second surface 203 of the battery cell 200, different treatment methods are used for different surfaces of the battery cell 200, which makes the treatment more reasonable, simplifies the treatment steps, and improves the treatment efficiency, thereby further shortening the removal time and further improving the working efficiency of the removal device 100.

[0052] According to some embodiments of the present invention, referring to Figure 3 and Figure 4 The processing unit 1 further includes a first mounting frame 14 , which is disposed on the processing workbench 11 , and the first clamping device 12 and the laser instrument 13 are both disposed on the first mounting frame 14 , and the first clamping device 12 is located below the laser instrument 13 .

[0053] For example, in Figure 3 and Figure 4 In the example, the first mounting frame 14 is located on the upper side of the processing workbench 11, the first mounting frame 14 is fixedly connected to the processing workbench 11, and the first clamping device 12 and the laser instrument 13 are opposite to each other in the up and down direction. With such a configuration, the first mounting frame 14 facilitates the installation and fixation of the first clamping device 12 and the laser instrument 13, which is conducive to the first clamping device 12 and the laser instrument 13 being stably fixed on the processing workbench 11. Moreover, the first mounting frame 14 has a simple structure, which reduces the difficulty of installing the first clamping device 12 and the laser instrument 13 and improves the installation efficiency of the processing unit 1. In addition, it is also convenient to control the installation position of the first clamping device 12 and the laser instrument 13 on the first mounting frame 14, thereby effectively ensuring that the laser of the laser instrument 13 can irradiate the battery cell 200 clamped by the first clamping device 12, thereby allowing the removal device 100 to be used normally for a long time.

[0054] According to some embodiments of the present invention, referring to Figure 1-Figure 4 The first mounting frame 14 is provided with two first guide rails 141 which are arranged at intervals and are movable in the up-down direction. The first clamping device 12 includes two first clamping mechanisms 121, which are movably arranged on the two first guide rails 141 along the arrangement direction of the processing workbench 11 and the removal workbench 21, respectively, and the two first clamping mechanisms 121 are suitable for clamping the battery cell 200 and for driving the battery cell 200 to rotate.

[0055] For example, in Figure 1-Figure 4In the example, the two first guide rails 141 are respectively located at the lower ends of the left and right ends of the first mounting frame 14, and the two first guide rails 141 can move in the up and down directions. The two first clamping mechanisms 121 are respectively connected to the two first guide rails 141, and the two first clamping mechanisms 121 can move in the front-to-back direction on the corresponding first guide rails 141, that is, move along the arrangement direction of the processing workbench 11 and the removal workbench 21. The two first clamping mechanisms 121 respectively clamp the two poles 204 at the two ends of the battery cell 200 in the left and right directions and can drive the battery cell 200 to rotate around the central axis of the battery cell 200.

[0056] With such a configuration, the two first clamping mechanisms 121 clamp the battery cell 200 from both ends of the battery cell 200, respectively, which improves the clamping stability, thereby improving the stability of the battery cell 200, and preventing the battery cell 200 from falling off the first clamping device 12 during the use of the processing unit 1, thereby further improving the use stability of the processing unit 1. In addition, according to actual use conditions, the first guide rail 141 drives the first clamping device 12 to move along the up and down direction together with the battery cell 200, and can control the distance between the battery cell 200 and the laser instrument 13 to control the energy of the laser emitted by the laser instrument 13 on the surface of the battery cell 200, and the two first clamping mechanisms 121 can drive the battery cell 200 to move along the front-to-back direction together, so that the laser instrument 13 and the battery cell 200 are opposite to each other in the up and down direction, ensuring that the laser emitted by the laser instrument 13 can irradiate the battery cell 200, so that the processing unit 1 can be used normally for a long time, and the flexibility of the use of the processing unit 1 is also improved.

[0057] Yes, refer to Figure 3 and Figure 4 , the first mounting frame 14 is provided with a plurality of first sliding rails 142, and the two first rails 141 are connected to the first mounting frame 14 through the corresponding plurality of first sliding rails 142, respectively, and the first rails 141 are movable along the extension direction of the first sliding rails 142. In the description of the present invention, the meaning of "plurality" is two or more. For example, in Figure 3 and Figure 4 In the example, four first sliding rails 142 are provided, and the four first sliding rails 142 are respectively fixedly connected to the first mounting frame 14. The front and rear ends of the first rail 141 are respectively slidably connected to the corresponding first sliding rails 142. Thus, it is convenient for the first rail 141 to move in the up-down direction, so that the first rail 141 drives the first clamping mechanism 121 and the battery cell 200 to move in the up-down direction. For example, the extension direction of the first mounting frame 14 is the same as the extension direction of the first sliding rail 142.

[0058] According to some embodiments of the present invention, referring to Figure 3 and Figure 4The processing unit 1 further includes two first laser instrument moving guide rails 15 , a second laser instrument moving guide rail 16 and a third laser instrument moving guide rail 17 .

[0059] Specifically, the two first laser moving rails 15 are arranged at intervals. The second laser moving rail 16 is movably arranged between the two first laser moving rails 15 along the arrangement direction of the processing workbench 11 and the removal workbench 21. The third laser moving rail 17 is movably arranged on the second laser moving rail 16, and the laser 13 is movably arranged on the third laser moving rail 17.

[0060] For example, in Figure 3 and Figure 4 In the example, the two first laser moving rails 15 are spaced apart in the left-right direction, and the two first laser moving rails 15 are respectively located above the two first rails 141. The left and right ends of the second laser moving rail 16 are respectively slidably connected to the corresponding two first laser moving rails 15, and the second laser moving rail 16 is movable in the front-to-back direction. The third laser moving rail 17 is slidably connected to the second laser moving rail 16, and the third laser moving rail 17 is movable in the extension direction of the second laser moving rail 16 (for example, the left-right direction). The laser 13 is slidably connected to the third laser moving rail 17, and the laser 13 is movable in the up-down direction.

[0061] In this way, the third laser moving guide rail 17 drives the laser 13 to move in the left-right direction on the second laser moving guide rail 16, and the second laser moving guide rail 16 drives the third laser moving guide rail 17 and the laser 13 to move in the front-back direction on the two first laser 13 exciting guide rails. According to the actual use situation, the laser 13 can be moved in multiple directions such as up and down, left and right, and front and back directions to adjust the position of the laser 13 in height and in the plane, so as to facilitate the use of the laser 13, thereby further improving the flexibility of the use of the laser 13. In addition, the structure is simple, which facilitates the movement of the laser 13, thereby improving the flexibility of the movement of the laser 13. It should be noted that the removal device 100 also includes an operating system (not shown in the figure), and the operating system communicates with the laser 13. By inputting the size of the battery cell 200 into the operating system, the moving distance of the laser 13 on the first laser moving guide rail 15 and the second laser moving guide rail 16 during the use of the laser 13 can be controlled, and different powers can also be used to process when the laser 13 is opposite to different surfaces of the battery cell 200.

[0062] According to some embodiments of the present invention, referring to Figure 1 and Figure 2The removal unit 2 further includes a second mounting frame 24 , which is disposed on the removal workbench 21 , and the second clamping device 22 and the removal device 23 are both disposed on the second mounting frame 24 , and the second clamping device 22 is located below the removal device 23 .

[0063] For example, in Figure 1 and Figure 2 In the example, the second mounting bracket 24 is located on the upper side of the removal workbench 21, the second mounting bracket 24 is fixedly connected to the removal workbench 21, and the second clamping device 22 and the removal device 23 are opposite in the up-down direction. With such a configuration, the second mounting bracket 24 facilitates the installation and fixation of the second clamping device 22 and the removal device 23, which is beneficial for the second clamping device 22 and the removal device 23 to be stably fixed on the removal workbench 21. Moreover, the second mounting bracket 24 has a simple structure, thereby reducing the difficulty of installing the second clamping device 22 and the removal device 23 and improving the installation efficiency of the removal unit 2. In addition, it is also convenient to control the installation position of the second clamping device 22 and the removal device 23 on the second mounting bracket 24, thereby effectively ensuring that the removal device 23 and the battery cell 200 clamped by the second clamping device 22 are opposite in the up-down direction, thereby facilitating the removal device 23 to remove the protective film 201 on the battery cell 200.

[0064] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The second mounting frame 24 is provided with two second guide rails 241 which are spaced apart and movable in the up-down direction. The second clamping device 22 includes two second clamping mechanisms 221, which are movably arranged on the two second guide rails 241 along the arrangement direction of the processing workbench 11 and the removal workbench 21, respectively, and the two second clamping mechanisms 221 are suitable for clamping the processed battery cells 200 and for driving the battery cells 200 to rotate.

[0065] For example, in Figure 1 and Figure 2 In the example, the two second guide rails 241 are respectively located at the lower ends of the left and right ends of the second mounting frame 24, and the two second guide rails 241 can move in the up and down directions. The two second clamping mechanisms 221 are respectively connected to the two second guide rails 241, and the two second clamping mechanisms 221 can move in the front-to-back direction on the corresponding second guide rails 241, that is, move along the arrangement direction of the processing workbench 11 and the removal workbench 21. The two second clamping mechanisms 221 respectively clamp the two poles 204 at the two ends of the battery cell 200 in the left and right directions and can drive the battery cell 200 to rotate around the central axis of the battery cell 200.

[0066] With such arrangement, the two second clamping mechanisms 221 can clamp the battery cell 200 from both ends of the battery cell 200, thereby improving the stability of the clamping, thereby improving the stability of the battery cell 200, and preventing the battery cell 200 from falling off the second clamping device 22 during the use of the processing unit 1, thereby further improving the performance of the removal unit 2. In addition, according to actual use, the second guide rail 241 drives the second clamping device 22 and the battery cell 200 to move in the up-down direction, which can control the distance between the battery cell 200 and the removal device 23, so that the removal device 23 can remove the protective film 201 on the surface of the battery cell 200, and the two second clamping mechanisms 221 can drive the battery cell 200 to move in the front-to-back direction, so that the removal device 23 and the battery cell 200 are opposite to each other in the up-down direction, ensuring that the removal device 23 can remove the protective film 201 on the battery cell 200, so that the removal unit 2 can be used normally for a long time, and the flexibility of using the removal unit 2 is also improved.

[0067] Yes, refer to Figure 1 and Figure 2 The second mounting frame 24 is provided with a plurality of second sliding rails 242, and the two second rails 241 are connected to the second mounting frame 24 through the corresponding plurality of second sliding rails 242, and the second rails 241 move along the extension direction of the second sliding rails 242. For example, Figure 1 and Figure 2 In the example, four second sliding rails 242 are provided, and the four second sliding rails 242 are respectively fixedly connected to the second mounting frame 24. The front and rear ends of the second rail 241 are respectively slidably connected to the corresponding second sliding rails 242. Thus, it is convenient for the second rail 241 to move in the up-down direction, so that the second rail 241 drives the second clamping mechanism 221 and the battery cell 200 to move in the up-down direction. For example, the extension direction of the second mounting frame 24 is the same as the extension direction of the second sliding rail 242.

[0068] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The removal unit 2 further includes two first removal device moving guide rails 25 , a second removal device moving guide rail 26 and a third removal device moving guide rail 27 .

[0069] Specifically, the two first removal device moving rails 25 are arranged at intervals. The second removal device moving rail 26 is movably arranged between the two first removal device moving rails 25 along the arrangement direction of the processing workbench 11 and the removal workbench 21. The third removal device moving rail 27 is movably arranged on the second removal device moving rail 26, and the removal device 23 is movably arranged on the third removal device moving rail 27.

[0070] For example, in Figure 1 and Figure 2In the example, the two first removal device moving guide rails 25 are arranged at intervals along the left-right direction, and the two first removal device moving guide rails 25 are respectively located in the upper direction of the two second guide rails 241. The two ends of the second removal device moving guide rail 26 are respectively slidably connected to the corresponding two first removal device moving guide rails 25, and the second removal device moving guide rail 26 is movable in the front-back direction. The third removal device moving guide rail 27 is slidably connected to the second removal device moving guide rail 26, and the third removal device moving guide rail 27 is movable along the extension direction of the second removal device moving guide rail 26 (for example, the left-right direction). The removal device 23 is slidably connected to the third removal device moving guide rail 27, and the removal device 23 is movable in the up-down direction.

[0071] In this way, the third removal device moving guide rail 27 drives the removal device 23 to move on the second removal device moving guide rail 26 in the left-right direction, and the second removal device moving guide rail 26 drives the third removal device moving guide rail 27 and the removal device 23 to move on the two first removal device moving guide rails 25 in the front-back direction. According to actual use, the removal device 23 can be moved in multiple directions such as the up-down direction, the left-right direction and the front-back direction to adjust the height and the position of the removal device 23 in the plane, so as to facilitate the use of the removal device 23, thereby further improving the flexibility of the use of the removal device 23. In addition, the structure is simple, which facilitates the movement of the removal device 23, thereby improving the flexibility of the movement of the removal device 23. It should be noted that the operating system communicates with the removal device 23, and by inputting the size of the battery cell 200 into the operating system, the moving distance of the removal device 23 on the first removal device moving guide rail 25 and the second removal device moving guide rail 26 during use of the removal device 23 can also be controlled.

[0072] Further, refer to Figure 1 The removal device 100 further includes a transfer rail 3 and a tray 4. The transfer rail 3 includes a first transfer rail 31 and a second transfer rail 32. The first transfer rail 31 is arranged on the processing workbench 11, and the second transfer rail 32 is arranged on the removal workbench 21. The second transfer rail 32 is docked with the first transfer rail 31 along the arrangement direction of the processing workbench 11 and the removal workbench 21. The tray 4 is movably arranged on the transfer rail 3, and the battery cell 200 is suitable for being arranged on the tray 4.

[0073] For example, in Figure 1In the example, the first transfer rail 31 and the second transfer rail 32 extend in the front-to-back direction respectively, the first transfer rail 31 is fixedly connected to the upper side of the processing workbench 11, the second transfer rail 32 is fixedly connected to the upper side of the removal workbench 21, and the rear end of the first transfer rail 31 is butted against the front end of the second transfer rail 32. After the protective film 201 is processed on the first transfer rail 31, the tray 4 moves the battery cell 200 from the first transfer rail 31 to the second transfer rail 32, so that the battery cell 200 moves to the bottom of the removal device 5, so as to remove the protective film 201 on the second transfer rail 32. Such a configuration facilitates the movement of the battery cell 200 between the processing workbench 11 and the removal workbench 21 without manual handling, so that the protective film 201 of the battery cell 200 can be processed first and then removed, thereby facilitating the completion of different treatments of the protective film 201 of the battery cell 200, further improving the automation performance of the removal device 100, and further improving the removal efficiency. In addition, the first transfer guide rail 31 and the second transfer guide rail 32 have simple structures, which simplifies the structure of the removal device 100 and facilitates the production and processing of the removal device 100.

[0074] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 , the removal device 23 comprises a suction cup 5. For example, in Figure 1 and Figure 2 In the example, after the protective film 201 is passivated, the suction cup 5 can suck the protective film 201 to separate the protective film 201 from the shell of the battery cell 200. In this way, the suction cup 5 is used for automatic removal, and high-temperature aging of the colloid is not required. The disassembly process is simple and convenient, and the disassembly efficiency is high. In addition, manual removal is avoided, reducing labor costs. For example, the suction cup 5 can be a vacuum suction cup. For example, there is a battery pack consisting of 120 battery cells 200. It takes 10 hours for the staff to tear the protective film by hand, and 10 hours to deal with the residual glue on the surface of the battery cell 200, a total of 20 hours. The estimated time for the removal device 100 of the present application is: laser cleaning time (processing time of processing unit 1) is: 60 seconds for passivation of the second surface (i.e., wide surface) + 15 seconds for flipping + 15 seconds for removal (i.e., cleaning) of the first surface (i.e., narrow surface) = 90 seconds, 30 seconds for tearing off the suction cup 5 (removal time of removal unit 2), a total of 120 seconds, and a production capacity of 3600÷120=30 sections / hour, 1 hour is 3600 seconds, so the protective film 201 can be removed from 30 battery cells 200 within 1 hour, and it is estimated that it will take 4 hours to remove the protective film 201 of 120 battery cells 200, and there is no need to additionally process the residual glue on the surface of the battery cells, which significantly shortens the working time. However, it is not limited to this, and the removal time of the removal device 100 can be further optimized.

[0075] Optionally, refer to Figure 1The removal device 100 further includes a robot arm 6. The robot arm 6 can grab the battery cell 200 and place the battery cell 200 in the tray 4 on the processing workbench 11. Thus, the use of the robot arm 6 avoids injuries to workers when the removal device 100 is working. In addition, the work efficiency is also improved.

[0076] The working process of removing the protective film 201 by the removal device 100 is roughly as follows:

[0077] Step 1: First, the outer dimensions of the battery cell 200 are input into the operating system of the removal device 100. The robot arm 6 grabs the battery cell 200 and places the battery cell 200 on the tray 4 on the processing workbench 11. The left and right ends of the battery cell 200 are clamped by the two first clamping mechanisms 121. Then, the first clamping mechanism 121 and the battery cell 200 are driven to move upward for a distance through the first guide rail 141, so that the battery cell 200 can rotate normally. Next, the first clamping mechanism 121 is rotated to drive the battery cell 200 to rotate around the central axis of the battery cell 200, so that one of the first surfaces 202 of the battery cell 200 faces upward. Subsequently, the battery cell 200 is driven to move forward or backward on the first guide rail 141 by the first clamping mechanism 121 (or the third laser moving guide rail 17 and the laser 13 are driven forward or backward by the second laser moving guide rail 16), so that the laser 13 and the battery cell 200 are opposite to each other in the up and down directions, that is, the battery cell 200 is located at the focal position of the laser focusing of the laser 13.

[0078] Step 2: Turn on the high-power mode of the laser instrument 13, and drive the laser instrument 13 to move by the second laser moving guide rail 16 and the third laser moving guide rail 17 to achieve all-round reciprocating laser cleaning of one of the above-mentioned first surfaces 202 of the battery cell 200. The movement of the laser instrument 13 includes the direction along the length (i.e., the left-right direction) and the direction of the width (i.e., the front-to-back direction) of the first surface 202 of the battery cell 200. After completion, turn off the laser instrument 13. When the third laser moving guide rail 17 drives the laser instrument 13 to move in the left-right direction, the laser instrument 13 does not move relative to the third laser moving guide rail 17. When the second laser moving guide rail 16 drives the third laser moving guide rail 17 and the laser instrument 13 to move in the front-to-back direction, the third laser moving guide rail 17 and the laser instrument 13 do not move relative to the second laser moving guide rail 16.

[0079] Step three: Rotate the first clamping mechanism 121 to drive the battery cell 200 to rotate 180° around the central axis of the battery cell 200 so that the other first surface 202 of the battery cell 200 faces upward and is located at the focal point of the laser focus. Repeat step two to clean and remove the protective film 201 on the first surface 202 of the battery cell 200.

[0080] Step 4: The first clamping mechanism 121 is used to rotate the battery cell 200 90° around the central axis of the battery cell 200, and one of the second surfaces 203 of the battery cell 200 is facing upward. The first clamping mechanism 121 is used to drive the battery cell 200 to move forward or backward on the first guide rail 141 (or the second laser moving guide rail 16 is used to drive the third laser moving guide rail 17 and the laser 13 to move forward or backward), so that the laser 13 and the battery cell 200 are opposite to each other in the up and down direction, that is, one of the second surfaces 203 of the battery cell 200 is located at the focal position of the laser focus. Then, the low-power mode of the laser 13 is turned on, and the second surface 203 of the battery cell 200 is passivated by moving the second laser moving guide rail 16 or the third laser moving guide rail 17 to move the laser 13 in the left-right direction and the front-back direction, until the protective film 201 on the second surface 203 is completely passivated, and the laser 13 is turned off after completion.

[0081] Step 5: Rotate the battery cell 200 180° around the central axis of the battery cell 200 by the first clamping mechanism 121 so that the other second surface 203 of the battery cell 200 is facing upward and located at the focal position of the laser, repeat step 4 to completely passivate the protective film 201 on the other second surface 203, and then turn off the laser 13.

[0082] Step 6: The first clamping mechanism 121 drives the battery cell 200 to move downward until the battery cell 200 is placed on the tray 4, and then the first clamping mechanism 121 is separated from the battery cell 200. Subsequently, the battery cell 200 moves from the first transfer rail 31 to the second transfer rail 32 along the tray 4 until the tray 4 is completely located on the removal workbench 21. Then, after the two second clamping mechanisms 221 are moved to appropriate positions in the up-down direction and the front-back direction, the left and right ends of the battery cell 200 are clamped by the two second clamping mechanisms 221.

[0083] Step 7: The second clamping mechanism 221 and the battery cell 200 are driven to move upwards for a distance through the second guide rail 241, so that the battery cell 200 can rotate normally. Next, the battery cell 200 is driven to move forward or backward on the second guide rail 241 through the second clamping mechanism 221 (or the third removal device moving guide rail 27 and the suction cup 5 are driven to move forward or backward through the second removal device moving guide rail 26), so that the suction cup 5 and the battery cell 200 are opposite to each other in the vertical direction, that is, the battery cell 200 is located below the suction cup 5. Subsequently, the suction cup 5 is driven to move downwards along the third removal device moving guide rail 27 through the removal device 23, until the suction cup 5 absorbs the protective film 201 on the other second surface 203 of the battery cell 200. Then, the suction cup 5 is first driven to move upwards along the third removal device moving guide rail 27 through the removal device 23, and then the removal device 23 and the suction cup 5 are driven to move to the left (or right) through the third removal device moving guide rail 27 to tear off the protective film 201.

[0084] Step 8: The battery cell 200 is rotated 180° around the central axis of the battery cell 200 by the second clamping mechanism 221, and then the suction cup 5 is driven to move downward along the third removal device moving guide rail 27 by the removal device 23 until the suction cup 5 absorbs the protective film 201 on one of the second surfaces 203 of the battery cell 200. Then, the suction cup 5 is first driven to move upward along the third removal device moving guide rail 27 by the removal device 23, and then the removal device 23 and the suction cup 5 are driven to move to the right (or left) direction by the third removal device moving guide rail 27 to tear off the protective film 201.

[0085] Other structures and operations of the removal device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0086] In the description of the present invention, it is necessary to understand that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0088] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A protective film removal device for a battery cell, characterized in that: include: A processing unit, the processing unit comprising a first clamping device and a laser instrument, the first clamping device is suitable for clamping the battery cell and for driving the battery cell to rotate, and the laser instrument is suitable for processing the protective film of the battery cell; A removal unit, wherein the removal unit comprises a removal device, and the removal device is suitable for removing the protective film of the battery cell.

2. The protective film removal device for battery cells according to claim 1, characterized in that: The outer surface of the battery core includes a first surface and a second surface, and the area of ​​the first surface is smaller than the area of ​​the second surface; The laser is suitable for removing the protective film on the first surface and for passivating the protective film on the second surface.

3. The protective film removal device for battery cells according to claim 1, characterized in that: The processing unit further comprises a processing workbench, and the first clamping device and the laser instrument are both arranged on the processing workbench.

4. The protective film removal device for battery cells according to any one of claims 1 to 3, characterized in that: The removal unit further comprises a removal workbench and a second clamping device, wherein the second clamping device and the removal device are both arranged on the removal workbench, and the second clamping device is suitable for clamping the processed battery core and for driving the battery core to rotate.

5. The protective film removal device for battery cells according to claim 4, characterized in that: The processing unit further comprises: A first mounting frame, wherein the first mounting frame is arranged on the processing workbench, the first clamping device and the laser instrument are both arranged on the first mounting frame, and the first clamping device is located below the laser instrument.

6. The protective film removal device for battery cells according to claim 5, characterized in that: The first mounting frame is provided with two first guide rails which are spaced apart and movable in the up-down direction; The first clamping device includes two first clamping mechanisms, which are movably arranged on two first guide rails along the arrangement direction of the processing workbench and the removal workbench, respectively, and are suitable for clamping the battery core and driving the battery core to rotate.

7. The protective film removal device for battery cells according to claim 4, characterized in that: The processing unit further comprises: Two first laser instrument moving guide rails, the two first laser instrument moving guide rails are arranged at intervals; a second laser instrument moving guide rail, the second laser instrument moving guide rail being movably disposed between the two first laser instrument moving guide rails along the arrangement direction of the processing workbench and the removal workbench; A third laser instrument moving guide rail is provided on the second laser instrument moving guide rail in a movably manner, and the laser instrument is provided on the third laser instrument moving guide rail in a movably manner up and down.

8. The protective film removal device for battery cells according to claim 4, characterized in that: The removal unit further comprises: A second mounting frame, wherein the second mounting frame is arranged on the removal workbench, the second clamping device and the removal device are both arranged on the second mounting frame, and the second clamping device is located below the removal device.

9. The protective film removal device for battery cells according to claim 8, characterized in that: The second mounting frame is provided with two second guide rails which are spaced apart and movable in the up-down direction; The second clamping device includes two second clamping mechanisms, which are movably arranged on two second guide rails along the arrangement direction of the processing workbench and the removal workbench, respectively, and are suitable for clamping the processed battery cells and driving the battery cells to rotate.

10. The protective film removal device for battery cells according to claim 8, characterized in that: The removal unit further comprises: Two first removal device moving guide rails, the two first removal device moving guide rails are arranged at intervals; a second removal device moving guide rail, the second removal device moving guide rail being movably disposed between the two first removal device moving guide rails along the arrangement direction of the processing workbench and the removal workbench; A third removal device moving guide rail is provided on the second removal device moving guide rail in a movably manner, and the removal device is provided on the third removal device moving guide rail in a movably manner up and down.

11. The protective film removal device for battery cells according to claim 4, characterized in that: The removal device further comprises: A transmission guide, the transmission guide comprising a first transmission guide and a second transmission guide, the first transmission guide being arranged on the processing workbench, the second transmission guide being arranged on the removal workbench, the second transmission guide being butted with the first transmission guide along an arrangement direction of the processing workbench and the removal workbench; A tray is movably arranged on the transmission rail, and the battery cell is suitable for being arranged on the tray.

12. The protective film removal device for battery cells according to claim 1, characterized in that: The removal device comprises a suction cup.

Images