Welding strip shaping device and welding equipment

Abstract

This utility model provides a welding strip shaping device and welding equipment. The welding strip shaping device includes a first fixing module, a rotating module, and a shaping mechanism. The first fixing module is used to fix the triangular welding strip. The rotating module is spaced apart from the first fixing module. The shaping mechanism is located between the first fixing module and the rotating module and is used to shape the triangular welding strip. In this application, the rotating module drives the triangular welding strip to rotate, so that the bottom surface of the triangular welding strip at the first fixing module and the bottom surface of the triangular welding strip at the rotating module face opposite sides respectively. At this time, the position of the triangular welding strip's rotational deformation is located between the first fixing module and the rotating module. The shaping mechanism then works to shape the position of the triangular welding strip's rotational deformation, ensuring that when the triangular welding strip is interconnected with the solar cell, its bottom surface can simultaneously adhere to the front and back of two adjacent solar cells. The triangular welding strip located on the back of the solar cell can also effectively reflect the light transmitted from the back of the solar cell, improving the bifaciality of the photovoltaic module.

Description

Technical Field

[0001] This utility model relates to the field of battery cell welding technology, and in particular to a strip shaping device and welding equipment. Background Technology

[0002] With the rapid increase in the market penetration rate of bifacial photovoltaic modules, the performance requirements for their core component, the interconnecting ribbon, are becoming increasingly stringent. Current technologies employ a combination of triangular and flat ribbon shapes; one end of the ribbon is triangular for welding to the front of the solar cell, while the other end is flat for welding to the back of another solar cell. However, the flat ribbon cannot effectively reflect light transmitted from the back of the solar cell, limiting the bifaciality of the photovoltaic module. Triangular ribbons can reflect transmitted light. However, when a fully triangular ribbon is used for interconnection with solar cells, it is difficult for the base of the fully triangular ribbon to be simultaneously distributed on both the front and back of two adjacent solar cells. Utility Model Content

[0003] Therefore, it is necessary to provide a strip shaping device and welding equipment to address the problem that the bottom surface of the full triangular welding strip in the prior art is difficult to be simultaneously distributed on the front and back of one of two adjacent batteries.

[0004] The technical solution is as follows:

[0005] On the one hand, a solder strip shaping device is provided, comprising:

[0006] The first fixing module is used to fix the triangular welding strip;

[0007] A rotating module is provided at an interval from the first fixed module. The rotating module is used to drive the triangular welding strip to rotate, and during the rotation process, it has a shaping position that makes the bottom surface of the triangular welding strip at the first fixed module and the bottom surface of the triangular welding strip at the rotating module face opposite sides respectively.

[0008] A shaping mechanism is located between the first fixing module and the rotating module, and is configured to shape the triangular welding strip when the rotating module is in the shaping position.

[0009] In the above embodiment, the welding strip shaping device first installs the triangular welding strips on the first fixed module and the rotating module respectively. Then, the rotating module drives the triangular welding strip at the rotating module to rotate, while the triangular welding strip at the first fixed module does not rotate under the action of the first fixed module, until the rotating module rotates to the shaping position, with the bottom surfaces of the triangular welding strips at the first fixed module and the rotating module facing opposite sides respectively. At this time, the rotational deformation position of the triangular welding strip is located between the first fixed module and the rotating module. Finally, the shaping mechanism works to shape the rotational deformation position of the triangular welding strip, ensuring that when the triangular welding strip is interconnected with the solar cell, its bottom surface can simultaneously adhere to the front and back sides of two adjacent solar cells. This allows the triangular welding strip located on the back side of the solar cell to also have the function of reflecting transmitted light, effectively utilizing the light transmitted from the back side of the solar cell and improving the bifaciality of the photovoltaic module.

[0010] The technical solution will be further explained below:

[0011] In one embodiment, the welding strip shaping device further includes a second fixing module, which is spaced apart from the rotating module on the side away from the first fixing module and is used to fix the triangular welding strip.

[0012] In one embodiment, the length of the rotating module is adapted to the width of the solar cells in the photovoltaic module, and the distance between the first fixed module and the rotating module is set as a first spacing, which is adapted to the spacing between two adjacent solar cells in the photovoltaic module.

[0013] In one embodiment, the distance between the second fixing module and the rotating module is set as a second spacing, which is smaller than the first spacing.

[0014] In one embodiment, the rotating module includes a driving mechanism and a fixing mechanism. The driving mechanism is connected to the fixing mechanism to drive the fixing mechanism to rotate. The fixing mechanism is used to fix the triangular welding strip and drive the triangular welding strip to rotate.

[0015] In one embodiment, both the first fixing module and the second fixing module include the fixing mechanism, and each fixing mechanism includes a fixing body. The fixing body is provided with a conveyor channel extending along its own axis. The conveyor channel is used for the triangular welding strip to pass through, and the inner contour shape of the conveyor channel is adapted to the outer contour shape of the triangular welding strip.

[0016] In one embodiment, the fixing body includes a first fixing member and a second fixing member disposed opposite to each other. The first fixing member and the second fixing member are respectively provided with a first conveyor groove and a second conveyor groove on their sides that are close to each other. Each fixing mechanism also includes a driving component. The driving component is drivenly connected to at least one of the first fixing member and the second fixing member to drive the first fixing member and the second fixing member to move in a direction that is close to or far from each other. The first conveyor groove is configured to cooperate with the second conveyor groove to form the conveyor channel when the driving component drives the first fixing member and the second fixing member to fit together.

[0017] In one embodiment, the welding strip shaping device further includes a feeding mechanism and a receiving mechanism. The feeding mechanism is located upstream of the second fixing module and is used to feed the triangular welding strip to the second fixing module. The receiving mechanism is located downstream of the first fixing module and is used to wind up the shaped triangular welding strip.

[0018] In one embodiment, the shaping mechanism includes a support member for carrying the triangular welding strip and a flattening assembly movably mounted above the support member, the flattening assembly being used to flatten and shape the triangular welding strip.

[0019] On the other hand, a welding apparatus is provided, including a traction device and the aforementioned strip shaping device, wherein the traction device is configured to pull each of the triangular strips onto the battery cell after each of the strip shaping devices has shaped each of the triangular strips.

[0020] In the welding equipment described above, each welding strip shaping device shapes each triangular welding strip, and the shaped triangular welding strips are then simultaneously pulled onto the battery cells by a traction device for stacking and weaving. This reduces the need for visual correction of the welding strips and improves the cycle time of the welding equipment. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments 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 drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a solder strip shaping device according to one embodiment.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Welding strip shaping device; 100. First fixing module; 200. Rotating module; 300. Shaping mechanism; 400. Second fixing module; 500. Feeding mechanism; 600. Receiving mechanism; 20. Triangular welding strip. Detailed Implementation

[0026] 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.

[0027] like Figure 1 As shown, in one embodiment, a solder strip shaping device 10 is provided, including a first fixing module 100, a rotating module 200, and a shaping mechanism 300. The first fixing module 100 is used to fix a triangular solder strip 20. The rotating module 200 is spaced apart from the first fixing module 100. The rotating module 200 is used to drive the triangular solder strip 20 to rotate, and during rotation, it has a shaping position where the bottom surfaces of the triangular solder strip 20 at the first fixing module 100 and the bottom surfaces of the triangular solder strip 20 at the rotating module 200 face opposite sides. The shaping mechanism 300 is located between the first fixing module 100 and the rotating module 200, and is configured to shape the triangular solder strip 20 when the rotating module 200 is in the shaping position.

[0028] In the above embodiment, the welding strip shaping device 10 is used by first mounting the triangular welding strip 20 onto the first fixing module 100 and the rotating module 200 respectively. Then, the rotating module 200 drives the triangular welding strip 20 at the rotating module 200 to rotate, while the triangular welding strip 20 at the first fixing module 100 does not rotate under the action of the first fixing module 100, until the rotating module rotates to the shaping position, where the bottom surfaces of the triangular welding strip 20 at the first fixing module 100 and the triangular welding strip 20 at the rotating module 200 face opposite sides respectively. At this time, the rotational deformation position of the triangular welding strip 20 is located between the first fixing module 100 and the rotating module 200. Finally, the shaping mechanism 300 works to shape the rotational deformation position of the triangular welding strip 20, ensuring that when the triangular welding strip 20 is interconnected with the solar cell, its bottom surface can simultaneously adhere to the front and back sides of two adjacent solar cells. This allows the triangular welding strip 20 located on the back side of the solar cell to also have the function of reflecting transmitted light, effectively utilizing the light transmitted from the back side of the solar cell and improving the bifaciality of the photovoltaic module.

[0029] Specifically in this embodiment, the use of triangular welding strips 20 on the back of the solar cell can increase the back light reflectivity to greater than or equal to 92%, and the bifaciality of the photovoltaic module can be increased from the original 80% (typical value is 78% to 82%) to greater than or equal to 85%.

[0030] In this embodiment, the bottom surface of the triangular solder strip 20 refers to the side of the triangular solder strip 20 used for bonding with the battery cell. Specifically, the bottom surface of the triangular solder strip 20 is coated with a solder layer (e.g., a tin layer). The two sides of the triangular solder strip 20 are coated with a highly reflective material layer.

[0031] In this specific embodiment, the rotating module 200 is used to drive the triangular welding strip 20 to rotate 180°.

[0032] like Figure 1 As shown, the welding strip shaping device 10 further includes a second fixing module 400. The second fixing module 400 is spaced apart on the side of the rotating module 200 away from the first fixing module 100 and is used to fix the triangular welding strip 20. In this way, when the rotating module 200 drives the triangular welding strip 20 to rotate, both the first fixing module 100 and the second fixing module 400 fix the triangular welding strip 20, ensuring that the bottom surface of the triangular welding strip 20 at the rotating module 200 is accurately rotated 180°, thereby improving the reliability of the welding strip shaping device 10.

[0033] Specifically, in this embodiment, the second fixing module 400, the rotating module 200, and the first fixing module 100 are arranged along a linear direction.

[0034] It should be noted that after the rotating module 200 drives the triangular welding strip 20 to rotate 180°, the triangular welding strip 20 between the rotating module 200 and the second fixed module 400 will also undergo rotational deformation. However, the triangular welding strip 20 will be cut off at the position of rotational deformation. Therefore, a shaping mechanism 300 can be set at the position of rotational deformation of the triangular welding strip 20 between the rotating module 200 and the second fixed module 400 to shape it, or the shaping mechanism 300 can be omitted.

[0035] like Figure 1 As shown, optionally, the length of the rotating module 200 is adapted to the width of the solar cells in the photovoltaic module. The distance between the first fixed module 100 and the rotating module 200 is set as a first spacing, which is adapted to the spacing between two adjacent solar cells in the photovoltaic module. Thus, after the triangular solder strip 20 is interconnected with two adjacent solar cells, the rotational deformation position of the triangular solder strip 20 between the first fixed module 100 and the rotating module 200 corresponds to the space between the two adjacent solar cells, and the bottom surface of the triangular solder strip 20 can completely fit against the front or back of the solar cell, ensuring the contact area between the triangular solder strip 20 and the solar cell, reducing the occurrence of microcracks and poor soldering in the solar cell string, and improving the reliability of the photovoltaic module.

[0036] like Figure 1 As shown, optionally, the distance between the second fixing module 400 and the rotating module 200 is set as a second spacing. The second spacing is smaller than the first spacing. In this way, the shaped triangular welding strip 20 will be cut at the position corresponding to the position between the rotating module 200 and the second fixing module 400. The smaller first spacing can effectively reduce the waste of the triangular welding strip 20 and improve the practicality of the welding strip shaping device 10.

[0037] The dimensions of both the first and second spacings can be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, the first spacing can be set to 4mm to 8mm. For example, the first spacing can be set to 6mm. The second spacing can be set to 2mm to 4mm. For example, the second spacing can be set to 3mm.

[0038] In one embodiment, the rotating module 200 includes a driving mechanism and a fixing mechanism. The driving mechanism is connected to the fixing mechanism to drive the fixing mechanism to rotate. The fixing mechanism is used to fix the triangular welding strip 20 and drive the triangular welding strip 20 to rotate. In this way, the driving mechanism can precisely control the rotation angle of the fixing mechanism, ensuring that the fixing mechanism drives the triangular welding strip 20 to rotate 180°, thereby improving the reliability of the welding strip shaping device 10.

[0039] The drive mechanism can be configured as a gear drive structure, a worm gear drive structure, or other drive structures. The fixing mechanism can be configured as a fixing clamp, a fixing kit, or other fixing structure.

[0040] Furthermore, both the first fixing module 100 and the second fixing module 400 include fixing mechanisms. Each fixing mechanism includes a fixing body. The fixing body has a conveyor channel extending along its own axis. The conveyor channel is for the triangular welding strip 20 to pass through. The inner contour shape of the conveyor channel is adapted to the outer contour shape of the triangular welding strip 20. In this way, the triangular welding strip 20 fits against the inner wall of the conveyor channel, ensuring that the fixing body drives the triangular welding strip 20 to rotate synchronously, thereby ensuring that the triangular welding strip 20 rotates accurately by 180° and improving the reliability of the welding strip shaping device 10.

[0041] In this specific embodiment, the conveyor channel is located in the middle of the fixed body. The length of the conveyor channel is adapted to the width of the solar cell. The dimensional accuracy of the conveyor channel is controlled within ±0.02mm.

[0042] Optionally, the fixing body includes a first fixing member and a second fixing member disposed opposite to each other. The first fixing member and the second fixing member have a first conveyor groove and a second conveyor groove respectively on their sides closest to each other. Each fixing mechanism also includes a drive assembly, which is drively connected to at least one of the first fixing member and the second fixing member to drive the first fixing member and the second fixing member to move in a direction that approaches or moves away from each other. The first conveyor groove is configured to cooperate with the second conveyor groove to form a conveyor channel when the drive assembly drives the first fixing member and the second fixing member to fit together. Thus, when the triangular welding strip 20 needs to be installed, the three drive assemblies correspondingly control the three first fixing members and the three second fixing members to move in a direction that moves away from each other, so that the first fixing module 100, the rotating module 200, and the second fixing module 400 are all opened, so that the triangular welding strip 20 can be installed in the first fixing module 100, the rotating module 200, and the second fixing module 400. When it is necessary to fix the triangular welding strip 20, the three drive components control the three first fixing parts and the three second fixing parts to move in a direction that approaches each other, so that the first fixing module 100, the rotating module 200 and the second fixing module 400 are all closed. At this time, the triangular welding strip 20 at the first fixing module 100 and the second fixing module 400 cannot rotate, while the triangular welding strip 20 at the rotating module 200 can rotate under the drive of the rotating module 200, thereby improving the practicality of the welding strip shaping device 10.

[0043] In this specific embodiment, both the first and second fixing members are semi-circular. When the driving assembly drives the first and second fixing members to fit together, the first and second fixing members cooperate to form a cylindrical structure.

[0044] In other embodiments, one of the first and second fixing members has a wiring groove, while the other does not. The wiring groove is configured to cooperate with the other of the first and second fixing members to form a wiring channel when the drive assembly drives the first and second fixing members to engage.

[0045] It should be noted that the welding strip shaping device 10 can shape a single triangular welding strip 20, or it can shape a roll of triangular welding strip 20 in segments. The shaped triangular welding strip 20 can be collected by cutting into segments, or it can be collected by rewinding without cutting.

[0046] like Figure 1 As shown, in one embodiment, the ribbon shaping device 10 further includes a feeding mechanism 500 and a receiving mechanism 600. The feeding mechanism 500 is located upstream of the second fixing module 400 and is used to feed the triangular ribbon 20 to the second fixing module 400. The receiving mechanism 600 is located downstream of the first fixing module 100 and is used to wind up the shaped triangular ribbon 20. In this way, the ribbon shaping device 10 can perform segmented sequential shaping of the triangular ribbon 20 roll.

[0047] The feeding mechanism 500 can be configured as in the prior art to store the triangular welding strip 20 and feed it to the second fixing module 400. The receiving mechanism 600 can be configured as in the prior art to wind up the triangular welding strip 20.

[0048] It should be noted that the triangular welding strip 20 fed by the feeding mechanism 500 to the second fixed module 400 is a full triangular welding strip. In other words, the triangular welding strip 20 is a full triangular welding strip before shaping.

[0049] It should be noted that the lengths of the rotating module 200 and the first fixing module 100 can be flexibly adjusted according to the width of the battery cell. Specifically, in this embodiment, the lengths of the rotating module 200 and the first fixing module 100 are the same as the width of the battery cell. Thus, during the segmented shaping of the triangular welding strip 20 roll, when a segment of the triangular welding strip 20 is shaped, the first fixing module 100, the rotating module 200, and the second fixing module 400 are simultaneously opened, pulling the triangular welding strip 20 to move by the sum of the length of the first fixing module 100, the first spacing, the length of the rotating module 200, and the second spacing. Then, the first fixing module 100, the rotating module 200, and the second fixing module 400 are simultaneously closed to clamp the triangular welding strip 20. The rotating module 200 operates to drive the triangular welding strip 20 to rotate, and the above shaping actions are repeated in a cycle to achieve segmented and sequential shaping of the triangular welding strip 20 roll, improving the practicality of the welding strip shaping device 10.

[0050] The shaping mechanism 300 can be any structure in the prior art capable of shaping the position where the triangular welding strip 20 undergoes rotational deformation. For example, the position where the triangular welding strip 20 undergoes rotational deformation can be shaped by clamping, striking, or other methods.

[0051] In one embodiment, the shaping mechanism 300 includes a support member for supporting the triangular welding strip 20 and a flattening assembly movably mounted above the support member. The flattening assembly is used to flatten and shape the triangular welding strip 20. Thus, the rotational deformation position of the triangular welding strip 20 is shaped by flattening, ensuring that the bottom surfaces at both ends of the triangular welding strip 20 remain facing opposite sides, improving the reliability of the welding strip shaping device 10. Furthermore, the flattened triangular welding strip 20 has high flatness, which is beneficial for correcting the deviation of the triangular welding strip 20 during interconnection with the battery cells, improving the practicality of the welding strip shaping device 10.

[0052] In one embodiment, a welding apparatus is provided, including a traction device and at least one strip shaping device 10 as described in any of the above embodiments. The traction device is configured to pull each triangular strip 20 onto a solar cell after each strip shaping device 10 has shaped it.

[0053] In the above embodiment of the welding equipment, each welding strip shaping device 10 shapes each triangular welding strip 20. After shaping, each triangular welding strip 20 is simultaneously pulled onto the battery cell by the traction device for stacking and weaving, reducing the visual correction function of the welding strip and improving the cycle time of the welding equipment.

[0054] The traction device can be configured as any existing structure capable of simultaneously traction of multiple triangular welding strips 20. The number of welding strip shaping devices 10 can be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, the number of welding strip shaping devices 10 can be the same as the number of main busbars of the solar cell. Each welding strip shaping device 10 is arranged along a first linear direction, which is perpendicular to the traction direction of the triangular welding strips 20.

[0055] Optionally, the welding equipment includes a welding machine, which can be connected in series or parallel to the strip shaping device 10 to increase the cycle time of the welding equipment. Specifically, in this embodiment, the cycle time of the welding equipment can be increased from 5600 pcs / h to 6800 pcs / h.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[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 the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the 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 solder strip shaping device characterized by, include: The first fixing module (100) is used to fix the triangular welding strip (20); A rotating module (200) is spaced apart from the first fixed module (100). The rotating module (200) is used to drive the triangular welding strip (20) to rotate, and during the rotation process, it has a shaping position so that the bottom surface of the triangular welding strip (20) at the first fixed module (100) and the bottom surface of the triangular welding strip (20) at the rotating module (200) are respectively oriented towards the opposite sides. A shaping mechanism (300) is located between the first fixing module (100) and the rotating module (200) and is configured to shape the triangular welding strip (20) when the rotating module (200) is in the shaping position.

2. The solder strip shaping device of claim 1, wherein The welding strip shaping device (10) further includes a second fixing module (400), which is spaced apart from the rotating module (200) on the side away from the first fixing module (100) and is used to fix the triangular welding strip (20).

3. The solder strip shaping device of claim 2, wherein The length of the rotating module (200) is adapted to the width of the solar cells in the photovoltaic module. The distance between the first fixed module (100) and the rotating module (200) is set as a first spacing, which is adapted to the spacing between two adjacent solar cells in the photovoltaic module.

4. The solder strip shaping device of claim 3, wherein The distance between the second fixed module (400) and the rotating module (200) is set as a second spacing, which is smaller than the first spacing.

5. The solder strip shaping device of claim 2, wherein The rotating module (200) includes a driving mechanism and a fixing mechanism. The driving mechanism is connected to the fixing mechanism to drive the fixing mechanism to rotate. The fixing mechanism is used to fix the triangular welding strip (20) and drive the triangular welding strip (20) to rotate.

6. The solder strip shaping device of claim 5, wherein Both the first fixing module (100) and the second fixing module (400) include the fixing mechanism. Each fixing mechanism includes a fixing body. The fixing body is provided with a conveyor channel extending along its own axis. The conveyor channel is used for the triangular welding strip (20) to pass through. The inner contour shape of the conveyor channel is adapted to the outer contour shape of the triangular welding strip (20).

7. The solder strip shaping device of claim 6, wherein The fixing body includes a first fixing member and a second fixing member disposed opposite to each other. The first fixing member and the second fixing member are respectively provided with a first conveyor groove and a second conveyor groove on the side that is close to each other. Each fixing mechanism also includes a driving component. The driving component is connected to at least one of the first fixing member and the second fixing member to drive the first fixing member and the second fixing member to move in a direction that is close to or far from each other. The first conveyor groove is configured to cooperate with the second conveyor groove to form the conveyor channel when the driving component drives the first fixing member and the second fixing member to fit together.

8. The welding strip shaping apparatus according to any one of claims 2 to 7, characterized in that, The welding strip shaping device (10) further includes a feeding mechanism (500) and a receiving mechanism (600). The feeding mechanism (500) is located upstream of the second fixing module (400) and is used to feed the triangular welding strip (20) to the second fixing module (400). The receiving mechanism (600) is located downstream of the first fixing module (100) and is used to wind up the shaped triangular welding strip (20).

9. A solder strip shaping device according to any one of claims 1 to 7, characterized in that The shaping mechanism (300) includes a support member for carrying the triangular welding strip (20) and a flattening assembly movably mounted above the support member, the flattening assembly being used to flatten and shape the triangular welding strip (20).

10. A welding apparatus characterized by, Includes a traction device and at least one strip shaping device (10) as described in any one of claims 1 to 9, wherein the traction device is configured to pull each of the triangular strips (20) onto the battery cell after each of the strip shaping devices (10) has shaped each of the triangular strips (20).

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