Strip shaping device and stringer device

Abstract

The application relates to a welding strip shaping device and a string welding equipment. The welding strip shaping device comprises a first shaping die and a second shaping die. The first shaping die and the second shaping die are oppositely arranged. The first shaping die comprises a first shaping part and a second shaping part. The first shaping part and the second shaping part are arranged along a first direction of the first shaping die. The first shaping part cooperates with the second shaping die, and is used for shaping a welding strip to be shaped between the first shaping part and the second shaping die into a flat section. The second shaping part cooperates with the second shaping die, and is used for shaping the welding strip to be shaped between the second shaping part and the second shaping die into a first special-shaped welding strip. In this way, the welding strip shaping device can shape a welding strip with one shape into a special-shaped welding strip.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a ribbon shaping device and a string welding equipment. Background Technology

[0002] Photovoltaic modules are generally assembled from front glass, front encapsulant layer, cell strings, back encapsulant layer, and back glass through a lamination process. The cell string is formed by welding multiple cells together using solder ribbons. To increase the power output of photovoltaic modules, irregularly shaped solder ribbons are used to weld multiple cells together. However, common solder ribbon shaping equipment cannot shape solder ribbons of a single shape into irregularly shaped ribbons. Utility Model Content

[0003] Therefore, it is necessary to provide a welding strip shaping device and a string welding equipment that can shape a welding strip of one shape into an irregularly shaped welding strip.

[0004] In a first aspect, this application provides a welding strip shaping device, including a first shaping mold and a second shaping mold, the first shaping mold and the second shaping mold being disposed opposite to each other, the first shaping mold including a first shaping part and a second shaping part, the first shaping part and the second shaping part being arranged along a first direction of the first shaping mold, the first shaping part cooperating with the second shaping mold to shape the welding strip to be shaped between the first shaping part and the second shaping mold into a flat segment, the second shaping part cooperating with the second shaping mold to shape the welding strip to be shaped between the second shaping part and the second shaping mold into a first irregularly shaped welding strip.

[0005] In one embodiment, the second shaping part has a first shaping groove on the side facing the second shaping mold, and the first shaping groove extends along the first direction.

[0006] In one embodiment, the first shaping part is provided with a first transition groove on the side facing the second shaping mold. The first transition groove is located on the side of the first shaping part close to the second shaping part, and the first transition groove communicates with the first shaping groove.

[0007] In one embodiment, the cross-sectional shape of the first shaping groove is V-shaped, and in the direction from the first shaping part to the second shaping part, the width of the bottom wall of the first transition groove gradually decreases, and the depth of the first transition groove gradually increases.

[0008] In one embodiment, the first shaping mold further includes a third shaping part, which is disposed on the side of the first shaping part away from the second shaping part. The third shaping part is provided with a second shaping groove, which extends along the first direction, and the first shaping groove and the second shaping groove are correspondingly arranged.

[0009] In one embodiment, the first shaping part is further provided with a second transition groove on the side facing the second shaping mold. The second transition groove is located on the side of the first shaping part near the third shaping part, and the second transition groove communicates with the second shaping groove.

[0010] In one embodiment, the cross-sectional shape of the second shaping groove is V-shaped, and the width of the bottom wall of the second transition groove gradually decreases and the depth of the second transition groove gradually increases in the direction from the first shaping part to the third shaping part.

[0011] In one embodiment, the distance between the second shaping part and the second shaping mold and the distance between the third shaping part and the second shaping mold are equal, the distance between the first shaping part and the second shaping mold is greater than the distance between the second shaping part and the distance between the third shaping part and the second shaping mold; and / or, the sum of the length of the second shaping part in the first direction and the length of the third shaping part in the first direction is less than the length of the first shaping part in the first direction.

[0012] In one embodiment, the ribbon shaping device further includes a driving member connected to the second shaping mold, the driving member being used to drive the second shaping mold to move toward or away from the first shaping mold.

[0013] Secondly, this application also provides a string welding device, including a string welding machine and a strip shaping device of any of the above, wherein the strip shaping device is disposed on the string welding machine, the strip shaping device is used to shape the strip to be shaped into an irregularly shaped strip, and the string welding machine is used to weld the irregularly shaped strip to the battery cell.

[0014] In the aforementioned strip forming apparatus and welding equipment, the strip to be formed is positioned between a first forming mold and a second forming mold along a first direction. Then, the first forming mold and the second forming mold press together to shape the strip into an irregularly shaped strip. Specifically, the first forming part cooperates with the second forming mold to shape the strip between them into a flat segment, while the second forming part cooperates with the second forming mold to shape the strip between them into a first irregularly shaped segment. Thus, the strip forming apparatus can shape a strip of one shape into an irregularly shaped strip. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a solder strip shaping device according to an embodiment of this application.

[0016] Figure 2 for Figure 1 The diagram shows the structure of the first shaping mold.

[0017] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0018] Figure 4 for Figure 2 A magnified view of a portion of point B in the middle.

[0019] Figure 5 This is a schematic diagram of the structure of the shaped solder strip according to an embodiment of this application.

[0020] Figure 6 for Figure 5 A magnified view of a portion of point C.

[0021] Figure 7 for Figure 5 A magnified view of a portion of point D.

[0022] Explanation of icon numbers:

[0023] 10. Welding strip shaping device; 11. First shaping mold; 111. First shaping section; 1111. First transition groove; 1112. Second transition groove; 112. Second shaping section; 1121. First shaping groove; 113. Third shaping section; 1131. Second shaping groove; 12. Second shaping mold; 13. Guide component; 14. Drive component; 15. Fixing plate; 20. Irregularly shaped welding strip; 21. Flat section; 22. First irregularly shaped section; 23. First transition section; 24. Second irregularly shaped section; 25. Second transition section. Detailed Implementation

[0024] 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.

[0025] See Figure 1 One embodiment of this application provides a string welding device, including a string welding machine and a strip shaping device 10.

[0026] The welding strip shaping device 10 is integrated with the string welding machine. The welding strip shaping device 10 is used to shape the welding strip to be shaped into an irregularly shaped welding strip 20. The string welding machine is used to weld the irregularly shaped welding strip 20 to the battery cell.

[0027] In one embodiment, see Figure 1 The welding strip shaping device 10 includes a first shaping mold 11 and a second shaping mold 12, with the first shaping mold 11 and the second shaping mold 12 arranged opposite to each other.

[0028] Further, see Figure 1 The first forming mold 11 includes a first forming part 111 and a second forming part 112, which are arranged along a first direction of the first forming mold 11. Here, S represents the first direction of the first forming mold 11. The first forming part 111 cooperates with the second forming mold 12 to shape the weld strip to be formed between the first forming part 111 and the second forming mold 12 into a flat segment 21. The second forming part 112 cooperates with the second forming mold 12 to shape the weld strip to be formed between the second forming part 112 and the second forming mold 12 into a first irregularly shaped segment 22.

[0029] It is understandable that the first forming mold 11 and the second forming mold 12 work together to perform segmented forming of the welding strip to be shaped.

[0030] During the strip shaping process, the strip to be shaped is positioned between the first shaping mold 11 and the second shaping mold 12 along a first direction. Then, the first shaping mold 11 and the second shaping mold 12 are pressed together to shape the strip into a shaped strip 20. Specifically, the first shaping part 111 cooperates with the second shaping mold 12 to shape the strip between them into a flat segment 21, while the second shaping part 112 cooperates with the second shaping mold 12 to shape the strip between them into a first shaped segment 22. Thus, the strip shaping device 10 can shape a strip of one shape into a shaped strip.

[0031] After the welding strip is shaped, the string welding machine welds the flat section 21 to the back surface of one of the adjacent battery cells, and the first irregularly shaped section 22 to the light-receiving surface of the other adjacent battery cell.

[0032] Optionally, the cross-sectional shape of the welding strip to be shaped is circular. The welding strip shaping device 10 shapes the welding strip to be shaped into an irregularly shaped welding strip 20, which can prevent the irregularly shaped welding strip 20 from tipping over during the material handling process, causing the battery cells to break. At the same time, it can also prevent the irregularly shaped welding strips 20 from scraping against each other, causing the welding strips to break.

[0033] Of course, in other embodiments, the cross-sectional shape of the weld strip to be shaped may also be other shapes, and is not limited thereto.

[0034] In one embodiment, see Figure 1 and Figure 2 The side of the first shaping part 111 facing the second shaping mold 12 is a plane, and the side of the second shaping mold 12 facing the first shaping part 111 is a plane.

[0035] During the shaping of the welding strip, the welding strip to be shaped is positioned between the first shaping mold 11 and the second shaping mold 12 along a first direction. Then, the first shaping mold 11 and the second shaping mold 12 are pressed together. Since the side of the first shaping part 111 facing the second shaping mold 12 and the side of the second shaping mold 12 facing the first shaping part 111 opposite to it are both planes, the two planes fit together to press the welding strip to be shaped between the first shaping part 111 and the second shaping mold 12 into a flat segment 21.

[0036] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The second shaping part 112 has a first shaping groove 1121 on the side facing the second shaping mold 12, and the first shaping groove 1121 extends along a first direction. Specifically, in the first direction, the length of the first shaping groove 1121 is equal to the length of the second shaping part 112.

[0037] Furthermore, the second shaping mold 12 is opposite to the second shaping part 112 and the side facing the second shaping part 112 is a plane.

[0038] When shaping the solder strip, refer to Figure 1 The weld strip to be shaped is positioned between the first shaping mold 11 and the second shaping mold 12 along a first direction. The weld strip to be shaped between the second shaping section 112 and the second shaping mold 12 is located within the first shaping groove 1121. Then, the first shaping mold 11 and the second shaping mold 12 are pressed together to shape the weld strip to be shaped within the first shaping groove 1121 into a first irregularly shaped segment 22, the shape of which is adapted to the shape of the first shaping groove 1121. Thus, the first shaping groove 1121 can shape the weld strip to be shaped into the first irregularly shaped segment 22, and also plays a positioning role, thereby ensuring precise shaping of the weld strip and improving the welding strip shaping effect.

[0039] In one embodiment, see Figure 3 The cross-sectional shape of the first shaping groove 1121 is V-shaped. After being shaped by the first shaping groove 1121, the cross-sectional shape of the first irregular segment 22 is an isosceles acute triangle or an equilateral triangle.

[0040] After the solder strip is shaped, refer to Figure 5 and Figure 6 The stringer welds the bottom edge of the first irregularly shaped segment 22 to the light-receiving surface of the solar cell, ensuring surface contact between the first irregularly shaped segment 22 and the solar cell. This improves the reliability of the welding between the irregularly shaped welding strip 20 and the solar cell. Furthermore, the first irregularly shaped segment 22 reduces the light-blocking area, minimizing its impact on the light-receiving surface of the solar cell. Simultaneously, the two sides of the first irregularly shaped segment 22 reflect incident light back to the light-receiving surface of the solar cell, increasing the utilization rate of incident light by the solar cell.

[0041] Of course, in other embodiments, the cross-sectional shape of the first shaping groove 1121 may also be trapezoidal or the like, and is not limited thereto.

[0042] In one embodiment, see Figure 2 At least two first shaping grooves 1121 are provided, and all the first shaping grooves 1121 are spaced apart along a direction perpendicular to the first direction. During shaping, at least two weld strips to be shaped can be placed between the first shaping mold 11 and the second shaping mold 12. Since there are at least two first shaping grooves 1121, all the weld strips to be shaped can be shaped into the first irregular segment 22. In this way, at least two weld strips to be shaped can be shaped simultaneously, which helps to improve the shaping efficiency.

[0043] In one embodiment, see Figure 2 and Figure 3 The first shaping part 111 is provided with a first transition groove 1111 on the side facing the second shaping mold 12. The first transition groove 1111 is located on the side of the first shaping part 111 close to the second shaping part 112, and the first transition groove 1111 is connected to the first shaping groove 1121.

[0044] When shaping the solder strip, refer to Figure 1 The weld strip to be shaped is disposed between the first forming mold 11 and the second forming mold 12 along a first direction. Specifically, the weld strip to be shaped between the first forming part 111 and the second forming mold 12, and closer to the second forming part 112, is located within the first transition groove 1111. Then, the first forming mold 11 and the second forming mold 12 are pressed together to shape the weld strip to be shaped within the first transition groove 1111 into a first transition segment 23, the shape of which is adapted to the shape of the first transition groove 1111.

[0045] Among them, see Figure 5 and Figure 6 The first transition section 23 is located between the flat section 21 and the first irregular section 22, so that the first transition section 23 can better connect the flat section 21 and the first irregular section 22, thereby improving the structural strength of the irregular welding strip 20.

[0046] After the welding strip is shaped, the string welding machine welds the flat section 21 to the back surface of one of the adjacent solar cells, and the first irregularly shaped section 22 to the light-receiving surface of the other adjacent solar cell. Since a first transition section 23 is provided between the flat section 21 and the first irregularly shaped section 22, this can prevent microcracks in the solar cell caused by sudden deformation of the irregularly shaped welding strip 20.

[0047] In one embodiment, see Figure 3 In the direction from the first shaping section 111 to the second shaping section 112, the width of the bottom wall of the first transition groove 1111 gradually decreases, and the depth of the first transition groove 1111 gradually increases. Under the action of the first transition groove 1111, the welding strip to be shaped in the first transition groove 1111 can be shaped into a first transition section 23 with gradually changing width and height. In this way, the first transition section 23 can better connect the flat section 21 and the first irregular section 22, improve the structural strength of the irregular welding strip 20, and at the same time prevent the irregular welding strip 20 from suddenly deforming and causing microcracks in the battery cell.

[0048] Further, see Figure 2 At least two first transition grooves 1111 are provided, and all the first transition grooves 1111 are spaced apart along a direction perpendicular to the first direction. All the first transition grooves 1111 are connected to all the first shaping grooves 1121 in a one-to-one correspondence. During shaping, at least two weld strips to be shaped can be placed between the first shaping mold 11 and the second shaping mold 12. Since there are at least two first transition grooves 1111, all the weld strips to be shaped can be formed into the first transition section 23. Thus, at least two weld strips to be shaped can be shaped simultaneously, which helps to improve shaping efficiency.

[0049] In one embodiment, the length of the first transition groove 1111 in the first direction is 5mm to 10mm. After being shaped by the first transition groove 1111, the length of the first transition section 23 is 5mm to 10mm, which can further improve the structural strength of the irregular weld strip 20.

[0050] In one embodiment, see Figure 2 The first shaping mold 11 also includes a third shaping part 113. The third shaping part 113 is located on the side of the first shaping part 111 opposite to the second shaping part 112.

[0051] Further, see Figure 2 and Figure 4 The third shaping part 113 is provided with a second shaping groove 1131, which extends along a first direction. The first shaping groove 1121 and the second shaping groove 1131 are correspondingly arranged in the first direction. Specifically, in the first direction, the length of the second shaping groove 1131 is equal to the length of the third shaping part 113.

[0052] During the shaping of the weld strip, the weld strip to be shaped is positioned between the first shaping mold 11 and the second shaping mold 12 along a first direction. Specifically, the weld strip to be shaped between the second shaping mold 12 and the third shaping section 113 is located within the second shaping groove 1131. Then, the first shaping mold 11 and the second shaping mold 12 are pressed together to shape the weld strip between the second shaping mold 12 and the third shaping section 113 into a second irregularly shaped segment 24. Thus, the second shaping groove 1131 can shape the weld strip to be shaped into the second irregularly shaped segment 24, and also serves to position the weld strip, thereby ensuring precise shaping and improving the shaping effect.

[0053] After the welding strip is shaped, the string welding machine welds the first irregular segment 22 and the second irregular segment 24 to the light-receiving surface of the battery cell, and the flat segment 21 to the back-lighting surface of the battery cell. In order to ensure the superiority of the first irregular segment 22 and the second irregular segment 24, in the first direction, the sum of the length of the second shaping part 112 and the length of the third shaping part 113 is less than the length of the first shaping part 111.

[0054] In this embodiment, the sum of the length of the second shaping part 112 and twice the length of the third shaping part 113 is equal to the length of the first shaping part 111.

[0055] In one embodiment, see Figure 2 and Figure 4 The cross-sectional shape of the second shaping groove 1131 is V-shaped. After being shaped by the second shaping groove 1131, the cross-sectional shape of the second irregular segment 24 is an isosceles acute triangle or an equilateral triangle.

[0056] After the solder strip is shaped, refer to Figure 5 and Figure 7 The stringer welds the bottom edge of the second irregularly shaped segment 24 to the light-receiving surface of the solar cell, ensuring surface contact between the second irregularly shaped segment 24 and the solar cell. This improves the reliability of the welding between the irregularly shaped welding strip 20 and the solar cell. Furthermore, the second irregularly shaped segment 24 reduces the light-blocking area, minimizing its impact on the light-receiving surface of the solar cell. Simultaneously, the two sides of the second irregularly shaped segment 24 reflect incident light back to the light-receiving surface of the solar cell, increasing the utilization rate of incident light by the solar cell.

[0057] Of course, in other embodiments, the cross-sectional shape of the second shaping groove 1131 may also be trapezoidal.

[0058] In one embodiment, see Figure 2At least two second shaping grooves 1131 are provided, and all the second shaping grooves 1131 are spaced apart along a direction perpendicular to the first direction. All the first shaping grooves 1121 are corresponding one-to-one with all the second shaping grooves 1131. During shaping, at least two weld strips to be shaped can be placed between the first shaping mold 11 and the second shaping mold 12. Since there are at least two second shaping grooves 1131, all the weld strips to be shaped can be formed into the second irregular segment 24. Thus, at least two weld strips to be shaped can be shaped simultaneously, which helps to improve shaping efficiency.

[0059] In one embodiment, see Figure 2 The first shaping part 111 is provided with a second transition groove 1112 on the side facing the second shaping mold 12. The second transition groove 1112 is located on the side of the first shaping part 111 near the third shaping part 113, and the second transition groove 1112 is connected to the second shaping groove 1131.

[0060] During the strip shaping process, the strip to be shaped is positioned between the first shaping mold 11 and the second shaping mold 12 along a first direction. The strip to be shaped between the first shaping section 111 and the second shaping mold 12, and near the third shaping section 113, is located within the second transition groove 1112. Then, the first shaping mold 11 and the second shaping mold 12 are pressed together to shape the strip to be shaped within the second transition groove 1112 into a second transition segment 25, the shape of which is adapted to the shape of the second transition groove 1112. The second transition segment 25 is located between the flat segment 21 and the second irregularly shaped segment 24.

[0061] In one embodiment, see Figure 2 and Figure 4 In the direction from the first shaping section 111 to the third shaping section 113, the width of the bottom wall of the second transition groove 1112 gradually decreases, and the depth of the second transition groove 1112 gradually increases. Under the action of the second transition groove 1112, the welding strip to be shaped in the second transition groove 1112 can be shaped into a second transition section 25 with gradually changing width and height. In this way, the second transition section 25 can better connect the flat section 21 and the second irregular section 24, improve the structural strength of the irregular welding strip 20, and at the same time prevent the irregular welding strip 20 from suddenly deforming and causing microcracks in the battery cell.

[0062] In one embodiment, the length of the second transition groove 1112 in the first direction is 5mm to 10mm. After being shaped by the second transition groove 1112, the length of the second transition section 25 is 5mm to 10mm, which can further improve the structural strength of the irregular weld strip 20.

[0063] In one embodiment, see Figure 2At least two second transition grooves 1112 are provided, and all second transition grooves 1112 are spaced apart along a direction perpendicular to the first direction. Each second transition groove 1112 corresponds one-to-one with each second shaping groove 1131. During shaping, at least two weld strips to be shaped can be placed between the first shaping mold 11 and the second shaping mold 12. Since there are at least two second transition grooves 1112, all weld strips to be shaped can be formed into the second transition section 25. Thus, at least two weld strips to be shaped can be shaped simultaneously, which improves shaping efficiency.

[0064] In one embodiment, see Figure 1 and Figure 2 The distance between the second shaping part 112 and the second shaping mold 12 is equal to the distance between the third shaping part 113 and the second shaping mold 12. It can be understood that the side of the second shaping part 112 facing the second shaping mold 12 is flush with the side of the third shaping part 113 facing the second shaping mold 12.

[0065] Furthermore, the distance between the first shaping part 111 and the second shaping mold 12 is greater than the distance between the second shaping part 112 and the third shaping part 113 and the second shaping mold 12. During shaping, the first shaping groove 1121 and the second shaping groove 1131 can better position the welding strip to be shaped, which facilitates the second shaping mold 12 to perform precise shaping.

[0066] It should be noted that the distance between the first shaping part 111 and the second shaping mold 12 refers to the distance between the side of the first shaping part 111 facing the second shaping mold 12 and the side of the second shaping mold 12 facing the first shaping mold 11.

[0067] It should be noted that the distance between the second shaping part 112 and the second shaping mold 12 refers to the distance between the side of the second shaping part 112 facing the second shaping mold 12 and the side of the second shaping mold 12 facing the first shaping mold 11, and the distance between the third shaping part 113 and the second shaping mold 12 refers to the distance between the side of the third shaping part 113 facing the second shaping mold 12 and the side of the second shaping mold 12 facing the first shaping mold 11.

[0068] In one embodiment, see Figure 2 The first forming mold 11 is a forming plate. Furthermore, the first forming part 111, the second forming part 112, and the third forming part 113 are all forming plates. This facilitates the production and processing of the first forming part 111, the second forming part 112, and the third forming part 113.

[0069] In one embodiment, see Figure 1The second forming mold 12 is a forming plate. It can be understood that the second forming mold 12 is a one-piece plate structure.

[0070] In one embodiment, see Figure 1 The second shaping mold 12 is movable and can move relative to the first shaping mold 11, either towards or away from the first shaping mold 11. In this way, the first shaping mold 11 and the second shaping mold 12 cooperate to press the welding strip to be shaped, thereby shaping the welding strip to be shaped into a special-shaped welding strip 20.

[0071] In one embodiment, see Figure 1 The welding strip shaping device 10 also includes a guide member 13. The first shaping mold 11 is fixedly connected to the guide member 13, and the second shaping mold 12 is movably connected to the guide member 13. Under the action of the guide member 13, the movement of the second shaping mold 12 is directional, which helps to improve the stability of the movement of the second shaping mold 12, thereby improving the shaping effect of the welding strip.

[0072] It should be noted that the number of guide members 13 can be set according to actual needs, and no specific limitation is made here. In this embodiment, there are four guide members 13, which are respectively located at the four corners of the first forming mold 11 and the second forming mold 12.

[0073] In one embodiment, see Figure 1 The welding strip shaping device 10 also includes a drive component 14. Optionally, the drive component 14 can be a cylinder, electric cylinder, hydraulic cylinder, motor, or cam linkage mechanism, etc. The drive component 14 is connected to the second shaping mold 12, and the drive component 14 is used to drive the second shaping mold 12 to move towards or away from the first shaping mold 11. During welding strip shaping, the drive component 14 drives the second shaping mold 12 to move towards or away from the first shaping mold 11, thereby shaping the welding strip to be shaped.

[0074] In one embodiment, see Figure 1 The welding strip shaping device 10 also includes a fixing plate 15. The fixing plate 15 is located on the side of the second shaping mold 12 away from the first shaping mold 11, and the fixing plate 15 is fixedly connected to the guide member 13.

[0075] Further, see Figure 1 The driving component 14 is located on the side of the fixed plate 15 opposite to the second forming mold 12. The fixed plate 15 has a clearance hole, and the output end of the driving component 14 is located in the clearance hole. During the forming of the welding strip, the driving component 14 is activated, and the output end of the driving component 14 extends through the clearance hole and abuts against the second forming mold 12, causing the second forming mold 12 to move towards the first forming mold 11, thereby achieving the pressing of the first forming mold 11 and the second forming mold 12.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] The embodiments described above are merely illustrative of 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 welding strip shaping device (10), characterized in that, The device includes a first shaping mold (11) and a second shaping mold (12). The first shaping mold (11) and the second shaping mold (12) are disposed opposite to each other. The first shaping mold (11) includes a first shaping part (111) and a second shaping part (112). The first shaping part (111) and the second shaping part (112) are arranged along a first direction of the first shaping mold (11). The first shaping part (111) cooperates with the second shaping mold (12) to shape the welding strip to be shaped between the first shaping part (111) and the second shaping mold (12) into a flat segment (21). The second shaping part (112) cooperates with the second shaping mold (12) to shape the welding strip to be shaped between the second shaping part (112) and the second shaping mold (12) into a first irregular welding strip (20).

2. The welding strip shaping device (10) according to claim 1, characterized in that, The second shaping part (112) is provided with a first shaping groove (1121) on the side facing the second shaping mold (12), and the first shaping groove (1121) extends along the first direction.

3. The welding strip shaping device (10) according to claim 2, characterized in that, The first shaping part (111) has a first transition groove (1111) on the side facing the second shaping mold (12). The first transition groove (1111) is located on the side of the first shaping part (111) close to the second shaping part (112). The first transition groove (1111) is connected to the first shaping groove (1121).

4. The welding strip shaping device (10) according to claim 3, characterized in that, The first shaping groove (1121) has a V-shaped cross-section. In the direction from the first shaping part (111) to the second shaping part (112), the width of the bottom wall of the first transition groove (1111) gradually decreases, and the depth of the first transition groove (1111) gradually increases.

5. The welding strip shaping device (10) according to claim 2, characterized in that, The first shaping mold (11) further includes a third shaping part (113), which is located on the side of the first shaping part (111) away from the second shaping part (112). The third shaping part (113) is provided with a second shaping groove (1131), which extends along the first direction. The first shaping groove (1121) and the second shaping groove (1131) are correspondingly arranged.

6. The welding strip shaping device (10) according to claim 5, characterized in that, The first shaping part (111) is provided with a second transition groove (1112) on the side facing the second shaping mold (12). The second transition groove (1112) is located on the side of the first shaping part (111) near the third shaping part (113). The second transition groove (1112) is connected to the second shaping groove (1131).

7. The welding strip shaping device (10) according to claim 6, characterized in that, The cross-sectional shape of the second shaping groove (1131) is V-shaped. In the direction from the first shaping part (111) to the third shaping part (113), the width of the bottom wall of the second transition groove (1112) gradually decreases, and the depth of the second transition groove (1112) gradually increases.

8. The welding strip shaping device (10) according to claim 6, characterized in that, The distance between the second shaping part (112) and the second shaping mold (12) is equal to the distance between the third shaping part (113) and the second shaping mold (12). The distance between the first shaping part (111) and the second shaping mold (12) is greater than the distance between the second shaping part (112) and the distance between the third shaping part (113) and the second shaping mold (12). And / or, the sum of the length of the second shaping part (112) in the first direction and the length of the third shaping part (113) in the first direction is less than the length of the first shaping part (111) in the first direction.

9. The welding strip shaping apparatus (10) according to any one of claims 1 to 8, characterized in that, The welding strip shaping device (10) further includes a driving component (14), which is connected to the second shaping mold (12). The driving component (14) is used to drive the second shaping mold (12) to move toward or away from the first shaping mold (11).

10. A string welding device, characterized in that, The device includes a string welding machine and a strip shaping device (10) as described in any one of claims 1 to 9, wherein the strip shaping device (10) is disposed on the string welding machine, the strip shaping device (10) is used to shape the strip to be shaped into a shaped strip (20), and the string welding machine is used to weld the shaped strip (20) to the battery cell.

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