Clamp for welding strips

Abstract

The application relates to a welding strip flattening mechanism and welding equipment. The welding strip flattening mechanism comprises a pressure-bearing die, a pressure head and an adjusting assembly. The pressure-bearing die is used for bearing a welding strip. The pressure head is arranged opposite to the pressure-bearing die and is used for extruding the welding strip placed on the pressure-bearing die. The adjusting assembly is connected with the pressure-bearing die and is used for adjusting the initial position of the pressure-bearing die relative to the pressure head, so as to adjust the pressing stroke of the pressure head relative to the pressure-bearing die when the pressure head moves relative to the pressure-bearing die. The welding strip flattening mechanism and the welding equipment have the advantages that the adjusting assembly can adjust the initial position of the pressure-bearing die relative to the pressure head, so as to adjust the pressing stroke of the pressure head relative to the pressure-bearing die when the pressure head moves relative to the pressure-bearing die, thereby facilitating the control of the welding strip flattening thickness and improving the uniformity of the welding strip flattening thickness.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a strip flattening mechanism and welding equipment. Background Technology

[0002] With the development of the photovoltaic industry, round wire welding strips have become the main interconnecting strips used for cell welding. However, the curvature of the round wire can cause microcracks to easily appear at the edges of the cells during sample preparation. The current industry solution is to flatten the welding wire at the cell junction.

[0003] However, in related technologies, it is difficult to adjust the downward stroke during the flattening operation of the welding strip, and uneven thickness of the flattened welding strip is prone to occur. Utility Model Content

[0004] Based on this, this application provides a strip flattening mechanism and welding equipment to solve the technical problem of how to conveniently adjust the downward stroke and improve the uniformity of strip flattening.

[0005] On one hand, this application provides a strip flattening mechanism, the strip flattening mechanism comprising:

[0006] A pressure-bearing mold, which is used to support the welding strip;

[0007] A pressure head is disposed opposite to the pressure mold, and the pressure head is used to extrude the welding strip placed in the pressure mold;

[0008] An adjustment component is connected to the pressure mold and is used to adjust the initial position of the pressure mold relative to the pressure head, so as to adjust the downward pressure stroke of the pressure head on the welding strip when it moves relative to the pressure mold.

[0009] In one embodiment, the adjusting assembly includes a worm gear, a worm, and a lead screw. The outer peripheral wall of the worm gear has a meshing portion, and the inner peripheral wall of the worm gear has a threaded portion. The worm meshes with the meshing portion, and the lead screw passes through the worm gear and engages with the threaded portion. The pressure mold is connected to one end of the lead screw. When the worm rotates around its own axis, the worm drives the worm gear to rotate around the axial direction of the lead screw, causing the worm gear to drive the lead screw to move along the axial direction of the lead screw. The lead screw drives the pressure mold to move away from or towards the pressure head.

[0010] In one embodiment, the adjusting assembly includes a mounting housing, on which the worm gear, the worm, and the lead screw are all mounted. The mounting housing has a first through hole and a second through hole. At least one end of the worm extends out of the mounting housing from the first through hole, and the end of the lead screw connected to the pressure mold extends out of the mounting housing from the second through hole.

[0011] In one embodiment, the adjustment assembly further includes an adjustment knob located outside the mounting housing and connected to the worm gear.

[0012] In one embodiment, the adjustment assembly further includes a drive motor connected to the worm gear, the drive motor being used to drive the worm gear to rotate.

[0013] In one embodiment, the strip flattening mechanism further includes a detection component for detecting the position of the pressure mold. The detection component is signal-connected to the drive motor, and the drive motor drives the worm gear to rotate according to the position of the pressure mold detected by the detection component.

[0014] In one embodiment, the adjusting assembly includes a first bearing and a second bearing, the first bearing being sleeved on one end of the worm gear and the second bearing being sleeved on the other end of the worm gear, the worm gear being rotatably connected to the mounting housing via the first bearing and the second bearing.

[0015] In one embodiment, the adjusting assembly includes a third bearing and a fourth bearing, the worm gear includes a sleeve and a wheel body, the wheel body is sleeved on the outside of the sleeve, the meshing portion is located on the outer periphery of the wheel body, the threaded portion is located on the inner wall of the sleeve, the sleeve is sleeved on the lead screw, the third bearing is sleeved on one end of the sleeve, the fourth bearing is sleeved on the other end of the sleeve, and the sleeve is rotatably connected to the mounting housing through the third bearing and the fourth bearing.

[0016] In one embodiment, the strip flattening mechanism includes a base, a plurality of the adjusting components, a plurality of the pressing heads, and a plurality of cylinders. The plurality of adjusting components are arranged side by side on the base, and each adjusting component is connected to a pressure-bearing mold. Each pressing head is arranged opposite to at least one of the pressure-bearing molds and is connected to at least one of the cylinders.

[0017] On the other hand, this application provides a welding device, including a laser and a strip flattening mechanism as described above. The laser is disposed on the discharge side of the strip flattening mechanism and is used to weld the strip flattened by the strip flattening mechanism to the battery cell.

[0018] The aforementioned welding equipment and strip flattening mechanism include a pressure mold, a pressure head, and an adjusting component. The pressure mold is used to support the strip, and the pressure head is positioned opposite to the pressure mold. The pressure head is used to squeeze the strip placed on the pressure mold. The adjusting component is connected to the pressure mold and is used to adjust the initial position of the pressure mold relative to the pressure head, so as to adjust the downward stroke of the pressure head on the strip when it moves relative to the pressure mold, thereby facilitating the control of the strip flattening thickness and improving the uniformity of the strip flattening thickness. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the strip flattening mechanism according to one embodiment of this application.

[0021] Figure 2 This is a partial structural diagram of the welding strip after the welding strip is flattened by the welding strip flattening mechanism according to an embodiment of this application.

[0022] Figure 3 for Figure 2 The diagram shows the structure of the solder strip connecting to the battery cell.

[0023] Figure 4 for Figure 1 The diagram shows an exploded view of the strip flattening mechanism.

[0024] Figure 5 This is a schematic diagram showing the connection between the adjusting component and the pressure mold in a strip flattening mechanism according to one embodiment of this application.

[0025] Figure 6 This is an exploded structural diagram of the adjustment component of the strip flattening mechanism according to one embodiment of this application.

[0026] Figure 7 for Figure 6 The diagram shows the assembly structure of the worm gear, worm, and lead screw in the adjusting assembly of the strip flattening mechanism.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Welding strip flattening mechanism; 11. Pressure mold; 12. Pressure head; 13. Adjustment component; 131. Worm gear; 1311. Meshing part; 1313. Sleeve; 1314. Wheel body; 132. Worm; 133. Lead screw; 134. Mounting shell; 1341. First through hole; 1342. Second through hole; 1343. Sub-shell; 135. Adjustment knob; 136. First bearing; 137. Second bearing; 138. Third bearing; 139. Fourth bearing; 14. Base; 141. Mounting groove; 15. Cylinder; 20. Welding strip; 21. Flattening part; 30. Battery cell. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and 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 of this application.

[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0035] Combination Figure 1 As shown, an embodiment of this application provides a strip flattening mechanism 10, which is suitable for flattening strips 20.

[0036] To facilitate understanding, the following will be combined with... Figure 2 and Figure 3 As shown, the effect of the structure in which the weld strip 20, after being flattened by the weld strip flattening mechanism 10, is connected between two battery cells 30 in reducing the probability of microcracks appearing at the edge of the battery cell 30 will be explained in detail.

[0037] After the welding ribbon 20 is flattened by the welding ribbon flattening mechanism 10, the compressed part of the welding ribbon 20 (hereinafter referred to as "flat part 21") is flat. So when the welding ribbon 20 is used to interconnect two battery cells 30, the flat part 21 of the welding ribbon 20 is aligned with the edge of the battery cell 30. In this way, the welding ribbon 20 is less likely to touch the edge of the battery cell 30, or compared with the unflattened welding ribbon, the pressure exerted by the flattened welding ribbon 20 on the edge of the battery cell 30 is smaller, thereby reducing the probability of microcracks appearing on the edge of the battery cell 30 due to the pressure of the welding ribbon 20.

[0038] The inventors discovered that in related technologies, during the flattening operation of the solder strip 20, the degree to which the solder strip 20 is flattened varies depending on the stroke of the downward pressure (hereinafter referred to as the "downward pressure stroke"), that is, the thickness of the compressed portion (i.e., the flattened portion 21) of the solder strip 20 is different. In related technologies, it is difficult to adjust the downward pressure stroke, which easily leads to uneven thickness of the flattened solder strip 20.

[0039] The welding strip flattening mechanism 10 provided in this application can easily adjust the downward stroke to improve the flattening uniformity of the welding strip 20.

[0040] Combination Figure 1 and Figure 4 As shown, the strip flattening mechanism 10 includes a pressure mold 11, a pressure head 12, and an adjusting component 13. The pressure mold 11 carries the strip 20, and the pressure head 12 is disposed opposite to the pressure mold 11. The pressure head 12 is used to squeeze the strip 20 placed on the pressure mold 11, thereby flattening the squeezed portion of the strip 20. The adjusting component 13 is connected to the pressure mold 11 and is used to adjust the initial position of the pressure mold 11 relative to the pressure head 12, so as to adjust the downward stroke of the pressure head 12 on the strip 20 when it moves relative to the pressure mold 11. In this application, the initial position of the pressure mold 11 relative to the pressure head 12 can be understood as the position of the pressure mold 11 relative to the pressure head 12 when the strip flattening mechanism 10 is in its initial state and the pressure head 12 has not moved close to the pressure mold 11.

[0041] It should be noted that, for the welding strip 20 placed on the pressure mold 11, after the pressure head 12 moves to contact the welding strip 20, it will squeeze the welding strip 20 as it continues to move closer to the pressure mold 11. Therefore, the change in thickness of the welding strip 20 when the pressure head 12 moves to its limit position is the downward stroke of the pressure head 12. Thus, when the pressure head 12 moves to its limit position closer to the pressure mold 11, the closer the pressure mold 11 is to the pressure head 12, the greater the degree of squeezing of the welding strip 20 by the pressure head 12, i.e., the greater the downward stroke of the pressure head 12; conversely, when the pressure head 12 moves to its limit position closer to the pressure mold 11, the farther the pressure mold 11 is from the pressure head 12, the lower the degree of squeezing of the welding strip 20 by the pressure head 12, i.e., the smaller the downward stroke of the pressure head 12.

[0042] In this embodiment, since the adjustment component 13 can adjust the initial position of the pressure mold 11 relative to the pressure head 12, the pressure head 12 will have different downward strokes when the pressure mold 11 is in different initial positions and the pressure head 12 moves to the limit position in the direction close to the pressure mold 11. That is, the downward stroke can be adjusted by the adjustment component 13 to facilitate the control of the flattening thickness of the welding strip 20 and improve the uniformity of the flattening thickness of the welding strip 20.

[0043] Combination Figure 5 and Figure 6 As shown, in some embodiments, the adjusting assembly 13 includes a worm gear 131, a worm 132, and a lead screw 133. The outer peripheral wall of the worm gear 131 has a meshing portion 1311, and the inner peripheral wall of the worm gear 131 has a threaded portion. The worm 132 meshes with the meshing portion 1311, and the lead screw 133 passes through the worm gear 131 and engages with the threaded portion. The pressure mold 11 is connected to one end of the lead screw 133. When the worm 132 rotates around its own axis, the worm 132 drives the worm gear 131 to rotate around the axial direction of the lead screw 133, so that the worm gear 131 drives the lead screw 133 to move along the axial direction of the lead screw 133. The lead screw 133 drives the pressure mold 11 to move away from or towards the pressure head 12.

[0044] In this embodiment, the worm gear 131, worm 132 and lead screw 133 have the effect of speed reduction transmission, which helps to improve the position adjustment accuracy of the pressure mold 11.

[0045] Continue to combine Figure 5 and Figure 6As shown, in some embodiments, the adjusting assembly 13 includes a mounting housing 134, in which a worm gear 131, a worm 132, and a lead screw 133 are all mounted. The mounting housing 134 has a first through hole 1341 and a second through hole 1342. At least one end of the worm 132 extends out of the mounting housing 134 from the first through hole 1341, and the end of the lead screw 133 connected to the pressure mold 11 extends out of the mounting housing 134 from the second through hole 1342.

[0046] In this embodiment, the mounting shell 134 serves as the mounting carrier for the worm gear 131, worm 132, and lead screw 133, which helps to ensure the assembly stability between the worm gear 131 and worm 132, and between the worm gear 131 and lead screw 133, thereby improving the stability of the adjusting assembly 13 when adjusting the position of the pressure mold 11.

[0047] It should be noted that the adjustment component 13 can be adjusted manually to adjust the position of the pressure mold 11, or it can be adjusted electrically.

[0048] For example, combining Figure 5 As shown, in some embodiments, the adjustment assembly 13 further includes an adjustment knob 135 located outside the mounting housing 134 and connected to the worm gear 132. Thus, an operator can rotate the worm gear 132 by turning the adjustment knob 135.

[0049] For example, in some embodiments, the adjusting assembly 13 further includes a drive motor (not shown), which is connected to the worm gear 132 and is used to drive the worm gear 132 to rotate. In this embodiment, using the drive motor to drive the worm gear 132 to rotate not only makes the position adjustment of the pressure mold 11 convenient but also provides good controllability.

[0050] Furthermore, since the drive motor can drive the worm gear 132 to rotate, in this embodiment, the strip flattening mechanism 10 may also include a detection component (not shown in the figure). The detection component is used to detect the position of the pressure mold 11. The detection component is connected to the drive motor signal, and the drive motor drives the worm gear 132 to rotate according to the position of the pressure mold 11 detected by the detection component. In this way, the position of the pressure mold 11 can be automatically detected and adjusted.

[0051] Combination Figure 6 and Figure 7As shown, in some embodiments, the adjusting assembly 13 includes a first bearing 136 and a second bearing 137. The first bearing 136 is sleeved on one end of the worm gear 132, and the second bearing 137 is sleeved on the other end of the worm gear 132. The worm gear 132 is rotatably connected to the mounting housing 134 via the first bearing 136 and the second bearing 137. This arrangement allows the worm gear 132 to rotate smoothly relative to the mounting housing 134 via the first bearing 136 and the second bearing 137, thereby improving the flexibility of the adjusting assembly 13 when adjusting the position of the pressure mold 11.

[0052] The adjusting assembly 13 includes a third bearing 138 and a fourth bearing 139. The worm gear 131 includes a sleeve 1313 and a wheel body 1314. The wheel body 1314 is sleeved on the outside of the sleeve 1313. The meshing part 1311 is located on the outer periphery of the wheel body 1314, and the threaded part is located on the inner wall of the sleeve 1313. The sleeve 1313 is sleeved on the lead screw 133. The third bearing 138 is sleeved on one end of the sleeve 1313, and the fourth bearing 139 is sleeved on the other end of the sleeve 1313. The sleeve 1313 is rotatably connected to the mounting housing 134 through the third bearing 138 and the fourth bearing 139. In this embodiment, the third bearing 138 improves the rotational stability of the worm gear 131 relative to the mounting housing 134, thereby enabling the worm gear 131 to stably drive the lead screw 133 to move axially along the lead screw 133, which in turn improves the stability of the adjusting assembly 13 when adjusting the position of the pressure mold 11.

[0053] like Figure 6 As shown, the mounting housing 134 may include multiple sub-housings 1343, which together enclose a space for mounting the worm gear 132, worm wheel 131, and lead screw 133. The multiple sub-housings 1343 may be connected by welding or by detachable connections such as screws or clips, to facilitate the assembly and disassembly of the components 13 and thus simplify maintenance. The number and shape of the sub-housings 1343 are not limited here.

[0054] See again 1 and Figure 4 As shown, the strip flattening mechanism 10 also includes a base 14. The strip flattening mechanism 10 includes multiple adjusting components 13, multiple pressing heads 12, and multiple cylinders 15. The multiple adjusting components 13 are arranged side-by-side on the base 14, and each adjusting component 13 is connected to a pressure-bearing mold 11. Each pressing head 12 is disposed opposite to at least one pressure-bearing mold 11 and is connected to at least one cylinder 15. In this embodiment, multiple cylinders 15 can be used to independently drive the pressing heads 12 mounted on their respective cylinders 15, so that the multiple pressing heads 12 can flatten multiple strips 20, thereby improving work efficiency.

[0055] It should be noted that the number of cylinders 15 and pressure heads 12 can be equal. In this case, multiple pressure heads 12 are connected to multiple cylinders 15 in a one-to-one correspondence. Multiple cylinders 15 can independently drive the pressure heads 12 connected to them to flatten the welding strip 20.

[0056] In some embodiments, the number of cylinders 15 may not be equal to the number of pressure heads 12. For example, one cylinder 15 drives two or more pressure heads 12. As another example, two or more cylinders 15 simultaneously drive one pressure head 12, thereby providing greater extrusion force to flatten the welding strip 20.

[0057] Accordingly, the number of pressure heads 12 can be equal to the number of pressure molds 11, and they can be set one-to-one.

[0058] In some embodiments, the number of pressure heads 12 may not be equal to the number of pressure molds 11. In this case, one pressure head 12 may correspond to multiple pressure molds 11, and one pressure head 12 may be able to flatten the welding strip 20 on multiple pressure molds 11; or, two or more pressure heads 12 may correspond to one pressure mold 11, so that two or more pressure heads 12 may be used to flatten the welding strip 20 located on the same pressure mold 11.

[0059] The number of structures such as the welding strip flattening mechanism 10, the pressure mold 11, the pressure head 12, and the adjustment component 13 in the embodiments of this application can be configured according to actual needs, and no specific limitation is made here.

[0060] Combination Figure 4 As shown, the base 14 is provided with mounting slots 141 for mounting adjustment components 13, and each mounting slot 141 can accommodate one adjustment component 13. In embodiments where the adjustment component 13 includes a mounting shell 134, the mounting shell 134 of the adjustment component 13 can be mounted to the mounting slot 141 by means of snap-fit, glue connection, or screw connection. The number of mounting slots 141 is not limited here, as long as it can meet the installation requirements of a corresponding number of adjustment components 13.

[0061] Another embodiment of this application provides a welding apparatus including the aforementioned strip flattening mechanism 10. The welding apparatus includes a laser, which is positioned on the discharge side of the strip flattening mechanism 10. That is, the strip 20 flattened by the strip flattening mechanism 10 can be output from the discharge side to the working area of ​​the laser. In this embodiment, the laser is used to weld the strip 20 flattened by the strip flattening mechanism to the solar cell 30.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A strip flattening mechanism (10), characterized in that, The strip flattening mechanism (10) includes: Pressure mold (11), the pressure mold (11) is used to carry the welding strip (20); A pressure head (12) is disposed opposite to the pressure mold (11), and the pressure head (12) is used to extrude the welding strip (20) placed in the pressure mold (11); Adjustment component (13) is connected to the pressure mold (11). The adjustment component (13) is used to adjust the initial position of the pressure mold (11) relative to the pressure head (12) so as to adjust the downward stroke of the pressure head (12) on the welding strip (20) when it moves relative to the pressure mold (11).

2. The strip flattening mechanism (10) according to claim 1, characterized in that, The adjusting assembly (13) includes a worm gear (131), a worm (132), and a lead screw (133). The outer peripheral wall of the worm gear (131) is provided with a meshing part (1311), and the inner peripheral wall of the worm gear (131) is provided with a threaded part. The worm (132) meshes with the meshing part (1311), and the lead screw (133) passes through the worm gear (131) and engages with the threaded part. The pressure mold ( 11) Connected to one end of the lead screw (133); when the worm (132) rotates around its own axis, the worm (132) drives the worm wheel (131) to rotate around the axis of the lead screw (133), so that the worm wheel (131) drives the lead screw (133) to move along the axis of the lead screw (133), and the lead screw (133) drives the pressure mold (11) to move away from or towards the pressure head (12).

3. The strip flattening mechanism (10) according to claim 2, characterized in that, The adjusting assembly (13) includes a mounting shell (134), the worm gear (131), the worm (132) and the lead screw (133) are all mounted on the mounting shell (134), the mounting shell (134) has a first through hole (1341) and a second through hole (1342), at least one end of the worm (132) extends out of the mounting shell (134) from the first through hole (1341), and the end of the lead screw (133) connected to the pressure mold (11) extends out of the mounting shell (134) from the second through hole (1342).

4. The strip flattening mechanism (10) according to claim 3, characterized in that, The adjustment assembly (13) also includes an adjustment knob (135), which is located outside the mounting housing (134) and is connected to the worm gear (132).

5. The strip flattening mechanism (10) according to claim 3, characterized in that, The adjustment assembly (13) also includes a drive motor, which is connected to the worm (132) and is used to drive the worm (132) to rotate.

6. The strip flattening mechanism (10) according to claim 5, characterized in that, The strip flattening mechanism (10) further includes a detection component, which is used to detect the position of the pressure mold (11). The detection component is connected to the drive motor signal, and the drive motor drives the worm gear (132) to rotate according to the position of the pressure mold (11) detected by the detection component.

7. The strip flattening mechanism (10) according to claim 3, characterized in that, The adjustment assembly (13) includes a first bearing (136) and a second bearing (137). The first bearing (136) is sleeved on one end of the worm (132), and the second bearing (137) is sleeved on the other end of the worm (132). The worm (132) is rotatably connected to the mounting housing (134) through the first bearing (136) and the second bearing (137).

8. The strip flattening mechanism (10) according to claim 3, characterized in that, The adjusting assembly (13) includes a third bearing (138) and a fourth bearing (139). The worm gear (131) includes a sleeve (1313) and a wheel body (1314). The wheel body (1314) is sleeved on the outside of the sleeve (1313). The meshing part (1311) is located on the outer periphery of the wheel body (1314). The threaded part is located on the inner wall of the sleeve (1313). The sleeve (1313) is sleeved on the lead screw (133). The third bearing (138) is sleeved on one end of the sleeve (1313). The fourth bearing (139) is sleeved on the other end of the sleeve (1313). The sleeve (1313) is rotatably connected to the mounting shell (134) through the third bearing (138) and the fourth bearing (139).

9. The strip flattening mechanism (10) according to any one of claims 1-8, characterized in that, The strip flattening mechanism (10) includes a base (14), a plurality of adjustment components (13), a plurality of pressure heads (12) and a plurality of cylinders (15). The plurality of adjustment components (13) are arranged side by side on the base (14), and each adjustment component (13) is connected to a pressure mold (11). Each pressure head (12) is arranged opposite to at least one pressure mold (11) and connected to at least one cylinder (15).

10. A welding device, characterized in that, Includes a laser and a strip flattening mechanism (10) as described in any one of claims 1 to 9, wherein the laser is disposed on the discharge side of the strip flattening mechanism (10) and the laser is used to weld the strip (20) flattened by the strip (20) pressing mechanism to the battery cell (30).

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