Auxiliary device for positioning the tfl adhesive straightness

Abstract

The utility model relates to new energy electric core technical field discloses an auxiliary device for positioning TFL pasting straightness, including guide rail, set up in the side of stretch float roll, and with the stretch float roll parallel distribution, two groups of laser assembly respectively set up in the both ends of guide rail vicinity, two groups the laser assembly far from the one end of guide rail respectively extend to the two edges of iron fluorine dragon, for respectively to the two edges of iron fluorine dragon carries out laser irradiation. Two groups of laser assembly are adopted respectively to the two edge positions of iron fluorine dragon that will be pasted laser irradiation, to make the laser irradiation line and the pasting edge of iron fluorine dragon flush, and then in the subsequent iron fluorine dragon pasting process, can realize the edge straight line calibration of iron fluorine dragon, effectively avoided the product of pole lug drum edge, deformation etc. Safety problem, and then safeguarded the safety and reliability of electric core production.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery cell technology, specifically to an auxiliary device for positioning the straightness of TFL bonding. Background Technology

[0002] In current lithium-ion battery electrode rolling processes, the tabs rely on TFL (Teflon) adhesive to be bonded to a stretching roller and stretched under a certain tensile tension. However, during the TFL bonding process, because the TFL needs to be bonded to the stretching roller and multiple layers are sometimes bonded repeatedly, there is a risk of misalignment. During rolling production, the tabs may experience inconsistent stretching due to TFL misalignment, leading to the risk of edge bulging. Furthermore, if the TFL misaligns and enters the active material area, under high tensile tension, the thinned area may be compressed and deformed, causing the active material to detach, affecting the safety and lifespan of the battery cell. Utility Model Content

[0003] The purpose of this invention is to overcome the safety problems such as electrode tab bulging caused by TFL pasting misalignment during the rolling process of battery cell production in the existing technology, and to provide an auxiliary device for positioning the straightness of TFL pasting. This auxiliary device for positioning the straightness of TFL pasting has the function of avoiding TFL pasting misalignment.

[0004] To achieve the above objectives, this utility model provides an auxiliary device for positioning the straightness of TFL adhesive, comprising: The guide rail is disposed on the side of the stretching float and is distributed parallel to the stretching float; Two sets of laser components are respectively disposed near both ends of the guide rail. The ends of the two sets of laser components away from the guide rail extend to the two edges of the Teflon, respectively, for laser irradiation of the two edges of the Teflon.

[0005] Optionally, the laser assembly includes: The mounting base is mounted on the guide rail; Adjustable bracket, one end of which is connected to the mounting base; A laser is located at the other end of the adjustment bracket, which is used to fine-tune the laser.

[0006] Optionally, the adjusting bracket includes at least two sets of mutually hinged support rods.

[0007] Optionally, the guide rail includes multiple sets of mounting holes, which are formed on the side wall of the guide rail. The mounting base is fastened to the guide rail by threaded engagement with one set of mounting holes using fastening bolts.

[0008] Optionally, multiple sets of mounting holes are evenly distributed along the sidewall of the guide rail.

[0009] Optionally, the laser includes an infrared laser.

[0010] Optionally, the auxiliary device further includes a beam shaping component disposed at the output end of the laser.

[0011] Optionally, the mounting base may be made of metal.

[0012] Optionally, the adjustment bracket may be made of aluminum alloy.

[0013] Through the above technical solution, the auxiliary device for positioning the straightness of TFL bonding provided by this utility model uses two sets of laser components to irradiate the two edge positions of the Teflon to be bonded, so that the laser irradiation line is flush with the bonding edge of the Teflon. In the subsequent Teflon bonding process, the edge straightness calibration of the Teflon can be achieved, effectively avoiding products with safety problems such as tab bulging and deformation, thereby ensuring the safety and reliability of battery cell production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an auxiliary device for positioning the straightness of TFL adhesive according to one embodiment of the present invention.

[0015] Explanation of reference numerals in the attached figures 1. Positive electrode sheet; 2. Stretching floating roller; 3. Laser; 4. Support rod; 5. Guide rail; 6. Mounting hole; 7. Mounting base; 8. Fastening bolt; 9. Ceramic zone; 10. Material zone; 11. Electrode tab. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0017] Figure 1 This is a structural schematic diagram of an auxiliary device for positioning the straightness of TFL adhesive according to one embodiment of the present invention. Figure 1 In this auxiliary device, the guide rail 5 and two sets of laser components may be included.

[0018] The guide rail 5 is located on the side of the stretching float roller 2 and is distributed parallel to the stretching float roller 2. Two sets of laser components are respectively located near both ends of the guide rail 5, with the ends of the two sets of laser components away from the guide rail 5 extending to the two edges of the Teflon, for laser irradiation of the two edges of the Teflon. Specifically, the positive electrode 1 may include a material area 10, a ceramic area 9, and a tab 11, with the material area 10 located in the middle, the ceramic area 9 symmetrically arranged on both sides of the material area 10, and the tab 11 symmetrically arranged on the side of the ceramic area 9 away from the material area 10. The positive electrode 1 may include a lithium iron phosphate positive electrode 1, with a foil width of 244 mm, a coating area 10 width of 200 mm, a ceramic width of 6 mm, an edge blank of 16 mm, and Teflon parameters including 3.5 cm and a thickness of 130 μm.

[0019] Before stretching the tab 11 of the positive electrode 1, the positive electrode 1 is first threaded onto the conveyor belt according to the belt threading diagram of the roller press. After the electrode is threaded smoothly, the two sets of laser components are adjusted to irradiate the junction between the material area 10 and the ceramic of the positive electrode 1. Then, a ceramic knife is used to cut open the electrode, and Teflon is pasted around it according to the irradiation positions of the two sets of laser components. After the bottom layer is pasted, the two sets of laser components are released so that they can slide on the guide rail 5. After the laser components are slid to the position irradiating the middle of the ceramic, the laser components are fixed, and the second layer of Teflon is pasted. This cycle is repeated so that the laser components finally irradiate the junction between the ceramic and the tab 11 to paste the third and fourth layers of Teflon. After pasting, the equipment provides tension to the stretching float roller 2, and the tab 11 is stretched by the combined action of the Teflon and the tension of the stretching float roller 2.

[0020] In traditional electrode rolling production, the tab 11 may experience inconsistent stretching due to TFL misalignment, leading to the risk of bulging edges. Alternatively, if the bonding is misaligned into the active material area 10, the thinned area may deform under high tensile tension, causing the active material to detach and affecting the safety and lifespan of the battery cell. In this embodiment of the invention, two sets of laser components are used to irradiate the two edges of the Teflon to be bonded, ensuring that the laser irradiation line is flush with the bonding edge of the Teflon. This effectively avoids safety issues such as bulging edges and deformation of the tab 11, thereby ensuring the safety and reliability of battery cell production.

[0021] In this embodiment of the present invention, such as Figure 1 As shown, the laser assembly may include a mounting base 7, an adjustment bracket, and a laser 3.

[0022] Mounting base 7 is set on guide rail 5. One end of adjustment bracket is connected to mounting base 7, and laser 3 is set on the other end of adjustment bracket. Adjustment bracket is used to fine adjust laser 3.

[0023] When the position of laser 3 needs to be adjusted, the mounting base 7 is disengaged from the guide rail 5, and then slid along the guide rail 5 to move laser 3 to the corresponding position. The mounting base 7 is then fixed to the guide rail 5. Fine-tuning of the laser 3's irradiation position and angle can be achieved using an adjustment bracket. The sliding mechanism of the mounting base 7 and guide rail 5 improves the ease of laser 3 position adjustment. Furthermore, using an adjustment bracket for fine-tuning further enhances the accuracy of laser 3's level irradiation.

[0024] In this embodiment of the present invention, such as Figure 1 As shown, the adjustment bracket may include at least two sets of support rods 4.

[0025] At least two sets of support rods 4 are foldable structures, and the opposite ends of at least two sets of support rods 4 are hinged to each other. The support rod 4 near the mounting base 7 is connected to the mounting base 7 through a rotating shaft, and the support rod 4 near the laser 3 is connected to the mounting base 7 through a fastening clamp.

[0026] An angle adjustment knob is provided on the rotating shaft, which can be rotated to adjust the angle between the support rod 4 and the mounting base 7 within the range of 0°-180°. The fastening clamp is equipped with bolts for adjusting the fastening force, which can adjust the position and angle of the laser 3 on the support rod 4 as needed, providing greater flexibility.

[0027] In this embodiment of the present invention, such as Figure 1 As shown, the guide rail 5 may include multiple sets of mounting holes 6.

[0028] Multiple sets of mounting holes 6 are formed on the side wall of the guide rail 5. The mounting base 7 is fastened to the guide rail 5 by threaded engagement with one set of mounting holes 6 through fastening bolts 8.

[0029] When the mounting base 7 needs to be fixed, it can be secured with bolts, thereby allowing adjustment of the laser 3's position. Using bolts for fixing facilitates disassembly and provides better stability.

[0030] In this embodiment of the present invention, taking into account the accuracy of the position adjustment of the mounting base 7 and the laser 3, the multiple sets of mounting holes 6 are evenly distributed along the side wall of the guide rail 5.

[0031] In this embodiment of the present invention, the laser 3 may include an infrared laser 3, the power and wavelength of which are adjustable. Specifically, the wavelength range of the laser 3 is 780nm-1000nm, and the power can be adjusted between 1mW and 500mW to adapt to the requirements of different working environments for laser intensity and penetration.

[0032] In this embodiment of the present invention, the auxiliary device may further include a beam shaping component, which is capable of shaping the laser beam emitted by the infrared laser 3 into a specific shape, such as parallel light, fan-shaped light or cross light.

[0033] The beam shaping component is located at the output end of laser 3.

[0034] The beam shaping assembly may include beam shaping structures known to those skilled in the art, such as lens groups, mirrors, and apertures. The lens group consists of at least two lenses with different focal lengths and is used to adjust the divergence angle of the laser beam. The mirror is used to change the propagation direction of the laser beam. The aperture can control the spot size and shape of the laser beam. By combining these components, the laser beam can be shaped into a shape that meets specific working requirements.

[0035] In this embodiment of the present invention, the material of the mounting base 7 may include metal, and more specifically, may include a SUS304 metal plate with a certain thickness and strength. Specifically, the surface of the SUS304 metal plate is provided with a plurality of evenly distributed mounting holes, the diameter of which is 5mm-10mm, which can accommodate fastening bolts 8 of different specifications and are mounted on the bottom guide rail 5.

[0036] In this embodiment of the present invention, the material of the adjustment bracket may include aluminum alloy, the surface of which is anodized, which has good corrosion resistance and light weight, and facilitates the movement and installation of the device while ensuring structural strength.

[0037] Through the above technical solution, the auxiliary device for positioning the straightness of TFL bonding provided by this utility model uses two sets of laser components to irradiate the two edge positions of the Teflon to be bonded, so that the laser irradiation line is flush with the bonding edge of the Teflon. In the subsequent Teflon bonding process, the edge straightness calibration of the Teflon can be achieved, which effectively avoids safety problems such as tab bulging and deformation, and thus ensures the safety and reliability of battery cell production.

[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention. It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe the various possible combinations.

[0039] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An auxiliary device for positioning the straightness of TFL adhesive, characterized in that, include: The guide rail is disposed on the side of the stretching float and is distributed parallel to the stretching float; Two sets of laser components are respectively disposed near both ends of the guide rail. The ends of the two sets of laser components away from the guide rail extend to the two edges of the Teflon, respectively, for laser irradiation of the two edges of the Teflon.

2. The auxiliary device according to claim 1, characterized in that, The laser component includes: The mounting base is mounted on the guide rail; Adjustable bracket, one end of which is connected to the mounting base; A laser is located at the other end of the adjustment bracket, which is used to fine-tune the laser.

3. The auxiliary device according to claim 2, characterized in that, The adjusting bracket includes at least two sets of hinged rods.

4. The auxiliary device according to claim 2, characterized in that, The guide rail includes multiple sets of mounting holes, which are formed on the side wall of the guide rail. The mounting base is fastened to the guide rail by fastening bolts threaded into one set of mounting holes.

5. The auxiliary device according to claim 4, characterized in that, Multiple sets of mounting holes are evenly distributed along the sidewall of the guide rail.

6. The auxiliary device according to claim 2, characterized in that, The laser includes an infrared laser.

7. The auxiliary device according to claim 2, characterized in that, The auxiliary device also includes a beam shaping component, which is disposed at the output end of the laser.

8. The auxiliary device according to claim 2, characterized in that, The mounting base is made of metal.

9. The auxiliary device according to claim 2, characterized in that, The adjustment bracket is made of aluminum alloy.

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