Solder strip cutting component, solder strip conveying device and series welding equipment

Abstract

The utility model provides a welding strip cutting component, a welding strip conveying device and series welding equipment. The welding strip cutting component comprises a mounting seat and a driving part, and the driving part is arranged on the mounting seat; the cutting and clamping mechanism comprises a cutter unit, the driving part is configured to drive the cutter unit to act, the cutter unit can cut off and clamp a welding strip to obtain a welding strip with a set length, and the welding strip with the set length is used for connecting adjacent battery pieces, so that the working procedure of welding and processing the battery pieces is simplified, and the welding efficiency is improved. And the welding efficiency of the battery piece is improved.

Description

Technical Field

[0001] This application belongs to the field of solder technology, specifically, it relates to a solder strip cutting component, a solder strip conveying device, and a serial welding equipment. Background Technology

[0002] The welding strip conveying mechanism in related technologies has many complex processing steps, and the compatibility between these steps is difficult to guarantee. This not only increases the risk of equipment failure but also limits its stability and reliability. In addition, the cutting blade of the welding strip conveying mechanism has low precision and efficiency in cutting and fixing the welding strip.

[0003] Therefore, there is an urgent need for a welding strip conveying mechanism that can simplify the processing steps and improve the accuracy and efficiency of cutting and fixing the welding strip. Utility Model Content

[0004] One objective of this application is to provide a new technical solution for a welding strip cutting component, a welding strip conveying device, and a string welding equipment.

[0005] According to a first aspect of the embodiments of this application, a solder strip cutting component is provided, the solder strip cutting component comprising:

[0006] A mounting base and a drive unit, wherein the drive unit is disposed on the mounting base;

[0007] A cutting and clamping mechanism, comprising a cutting unit, wherein the driving member is configured to drive the cutting unit to operate, the cutting unit being capable of cutting and clamping the welding strip to obtain a set length of welding strip.

[0008] Optionally, the cutting and clamping mechanism includes a lifting unit, which is disposed on the mounting base, and the cutting unit is connected to the lifting unit and has a clearance position and a cutting position;

[0009] When the cutting unit is in the avoidance position, the cutting unit avoids the conveying path of the welding strip; when the cutting unit is in the cutting position, the cutting unit extends into the conveying path of the welding strip and is able to cut the welding strip.

[0010] Optionally, the cutting unit includes a bracket, a first cutting clamp, and a second cutting clamp. The first cutting clamp is fixed to the bracket, and the second cutting clamp can move closer to or further away from the first cutting clamp to form a clamping gap between the first cutting clamp and the second cutting clamp.

[0011] The tail end of the welding strip of the set length is clamped in the clamping gap.

[0012] Optionally, the first cutting fixture includes a first jaw, the second cutting fixture includes a second jaw and a cutter, the second jaw and the first jaw are used to clamp the tail end of a set length of welding strip, and the cutter is used to cooperate with the first jaw to cut the welding strip and obtain the set length of welding strip.

[0013] Optionally, the first gripper has a clearance surface and a clamping surface on the side facing the second gripper, a clearance gap is formed between the clearance surface and the second gripper, and a clamping gap is formed between the clamping surface and the second gripper.

[0014] Optionally, the side of the second gripper opposite to the first gripper is connected to the cutter via an elastic element.

[0015] According to a second aspect of the embodiments of this application, a welding strip conveying device is provided, comprising:

[0016] The conveying mechanism includes a material pulling structure for conveying welding strips to a welding platform for receiving battery cells;

[0017] The welding strip cutting component described in the first aspect, wherein the cutting clamping mechanism is adapted to be disposed at the feeding end of the welding platform, and the cutting clamping mechanism is capable of cutting the welding strip to obtain a set length of welding strip;

[0018] When the set length of welding strip is used to connect adjacent battery cells, the first end of the set length welding strip is connected to the material pulling structure, and the tail end of the set length welding strip is fixed to the cutting and clamping mechanism.

[0019] Optionally, the conveying mechanism further includes an unwinding structure, a coating structure, a pressing structure, and a bending structure;

[0020] The unwinding structure is used to unwind the welding strip to the drawing structure, the coating structure is used to coat the welding strip with flux, the pressing structure is used to tension the welding strip, and the bending structure is used to form a bending position on the welding strip.

[0021] According to a third aspect of the embodiments of this application, a string welding apparatus is provided, the string welding apparatus including a welding platform and the welding strip conveying device described in the second aspect;

[0022] The material pulling structure is used to convey the welding strip to the welding platform, which is used to receive the battery cells.

[0023] Optionally, the welding platform includes a conveyor belt for carrying and transporting the battery cells.

[0024] Optionally, it also includes a wafer-retrieving mechanism for transferring the battery cells to the welding platform.

[0025] One technical advantage of this application is:

[0026] This application provides a welding strip cutting component, which includes a mounting base and a driving member, the driving member being disposed on the mounting base; a cutting and clamping mechanism, the cutting and clamping mechanism including a cutting unit, the driving member being configured to drive the cutting unit to operate, the cutting unit being able to cut and clamp the welding strip to obtain a set length of welding strip, the set length of welding strip being used to connect adjacent battery cells, simplifying the battery cell welding process and improving the efficiency of battery cell welding.

[0027] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0029] Figure 1 A perspective view of a string welding apparatus provided in one embodiment of this application;

[0030] Figure 2 A side view of a string welding apparatus provided in one embodiment of this application;

[0031] Figure 3 A top view of a string welding apparatus provided in one embodiment of this application;

[0032] Figure 4 A front view of a cutting and clamping mechanism for a welding strip cutting component provided in one embodiment of this application;

[0033] Figure 5 A side view of a cutting and clamping mechanism for a welding strip cutting component provided in one embodiment of this application;

[0034] Figure 6 A perspective view of a cutting and clamping mechanism for a welding strip cutting component provided in one embodiment of this application;

[0035] Figure 7 An enlarged view of the cutting unit in a cutting and clamping mechanism for a welding strip cutting component provided in one embodiment of this application;

[0036] Figure 8 This is a partial top view of the cutting unit in a cutting and clamping mechanism for a welding strip cutting component according to an embodiment of this application.

[0037] in:

[0038] 1. Conveying mechanism; 11. Material pulling structure; 12. Unwinding structure; 13. Coating structure; 14. Pressing structure; 15. Bending structure; 2. Cutting and clamping mechanism; 21. Lifting unit; 22. Cutting unit; 221. Support; 222. First cutting fixture; 2221. Clearance surface; 2222. Clamping surface; 223. Second cutting fixture; 2231. Second gripper; 2232. Cutting blade; 2233. Elastic element; 23. Mounting base; 24. Driving element;

[0039] 200. Welding platform; 201. Conveyor belt. Detailed Implementation

[0040] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0041] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0042] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0046] In related technologies, the welding strip conveying mechanism can transport the welding strip to the welding area, which facilitates the welding operation of the welding strip to sheet materials such as battery cells; however, in order to ensure the stability of the welding strip after conveying and cutting, it is necessary to set up a follow-up tail clamp assembly and a tail clamp assembly to maintain the structural stability of the welding strip, which increases the complexity of the mechanism and the difficulty of coordination between various components.

[0047] This application provides a welding strip cutting component, which cuts and clamps the welding strip using a cutting and clamping mechanism to obtain a welding strip of a set length. The set length welding strip is used to connect adjacent battery cells. The length of the set length welding strip depends on the length of the battery string to be welded (the welding distance formed by adjacent battery cells), which simplifies the battery cell welding process and improves the efficiency of battery cell welding.

[0048] Reference Figures 1 to 4 This application provides a solder strip cutting component, which includes:

[0049] Mounting base 23 and drive component 24, with drive component 24 disposed on mounting base 23;

[0050] The cutting and clamping mechanism 2 includes a cutting unit 22 and a driving member 24 configured to drive the cutting unit 22 to operate. The cutting unit 22 is capable of cutting and clamping the welding strip to obtain a set length of welding strip.

[0051] In this embodiment, the mounting base 23 can serve as a fixed base for the welding strip cutting component to ensure the overall stability of the welding strip cutting component and reduce errors caused by cutting vibration.

[0052] In one embodiment, the drive member 24 is directly fixed to the mounting base 23, resulting in a faster power response and ensuring the stability of the drive member 24. In another embodiment, the drive member 24 and the cutting unit 22 form an integral structure that can move up and down on the mounting base. For example, the cutting unit 22 includes a fixed part and a movable part. The drive member 24 is fixedly connected to the fixed part and can move up and down on the mounting base. At the same time, the drive member 24 can drive the movable part to cut and clamp the welding strip when the fixed part and the movable part cooperate with each other. This shortens the power transmission path of the drive member 24 and improves the efficiency of the drive member 24 in driving the cutting unit 22.

[0053] See Figure 4 and Figure 5 The cutting unit 22 has the functions of cutting and clamping the welding strip, avoiding the need for additional clamping after cutting in traditional designs, and simplifying the structure of the welding strip cutting component. For example, the cutting unit 22 clamps the welding strip at the moment of cutting to prevent the welding strip from springing back or shifting.

[0054] In this embodiment, the drive unit 24 can be a cylinder or a motor. For example, the drive unit 24 can be a low-friction cylinder or a servo motor to reduce the power consumption of the drive unit 24 while ensuring the action accuracy of the cutting unit 22.

[0055] The cutting unit 22 provided in this application embodiment can cut and clamp the welding strip under the drive of the driving member 24 to obtain a welding strip of a set length. The welding strip of the set length is used to connect adjacent battery cells, which simplifies the battery cell welding process and improves the efficiency of battery cell welding.

[0056] In some embodiments, see Figure 1 , Figures 4 to 6 The cutting and clamping mechanism 2 includes a lifting unit 21 and a cutting unit 22. The cutting unit 22 is connected to the lifting unit 21 and has a clearance position and a cutting position.

[0057] When the cutting unit 22 is in the avoidance position, the cutting unit 22 avoids the conveying path of the welding strip; when the cutting unit 22 is in the cutting position, the cutting unit 22 extends into the conveying path of the welding strip and is able to cut the welding strip.

[0058] In this embodiment, the lifting unit 21 may include a driving part such as a cylinder or a motor. The driving part moves to drive the cutting unit 22 to rise and fall, so as to switch the cutting unit 22 between the avoidance position and the cutting position.

[0059] In one embodiment, see Figure 4The lifting unit 21 can drive the cutting unit 22 and the driving component 24 to move together, ensuring the structural compactness of the cutting unit 22 and the driving component 24, and improving the efficiency of the driving component 24 in driving the cutting unit 22.

[0060] During the conveying of the welding strip, the cutting unit 22 can be in an avoidance position, that is, the cutting unit 22 avoids the conveying path of the welding strip, thus avoiding contact between the cutting unit 22 and the welding strip during the conveying process and ensuring the stability of the welding strip conveying.

[0061] When the cutting unit 22 is in the cutting position, the cutting unit 22 can extend into the conveying path of the welding strip from outside the conveying path to cut the welding strip. While cutting the welding strip, the cutting unit 22 can clamp the tail end of the welding strip of a set length to ensure that the welding strip of the set length remains horizontal, so that the welding strip of the set length can be conveyed to the battery cell of the welding platform 200 by the material pulling structure 11, and prevent the welding strip of the set length from bending during the conveying process, thereby improving the welding quality of the battery cell.

[0062] In some embodiments, see Figures 4 to 6 The cutting unit 22 includes a bracket 221, a first cutting clamp 222 and a second cutting clamp 223. The first cutting clamp 222 is fixed to the bracket 221, and the second cutting clamp 223 can move closer to or further away from the first cutting clamp 222 to form a clamping gap between the first cutting clamp 222 and the second cutting clamp 223.

[0063] The tail end of the welding strip of a set length is clamped in the clamping gap.

[0064] In the above embodiments, the second cutting fixture 223 can move closer to or further away from the first cutting fixture 222 under the driving action of the driving member 24, so that after the cutting unit 22 cuts the welding strip, the tail end of the welding strip of a set length is clamped in the clamping gap between the first cutting fixture 222 and the second cutting fixture 223, so as to ensure the connection stability and reliability between the welding strip and the battery cell.

[0065] In addition, the second cutting fixture 223 can be close to or far from the first cutting fixture 222, so that the cutting unit 22 can be adjusted according to different weld strip widths and thicknesses, so that the weld strip conveyor can be applied to more types of weld strip cutting.

[0066] In some embodiments, see Figure 7 and Figure 8 The first cutting fixture 222 includes a first jaw, and the second cutting fixture 223 includes a second jaw 2231 and a cutter 2232. The second jaw 2231 and the first jaw are used to hold the tail end of the welding strip of a set length, and the cutter 2232 is used to cooperate with the first jaw to cut the welding strip and obtain the welding strip of the set length.

[0067] In this embodiment, the first and second grippers 2231 can precisely grip the tail end of the weld strip of a set length, ensuring that the weld strip remains stable during the cutting process, which helps to reduce cutting errors and improve cutting quality. The cooperation between the cutter 2232 and the first gripper ensures that the weld strip is accurately cut after being clamped stably, thereby obtaining the desired length of weld strip and improving the accuracy and reliability of cutting.

[0068] It is worth noting that since the cutting and clamping of the welding strip are both achieved by the cutting unit 22 of the cutting and clamping mechanism 2, and the cutting and clamping process of the cutting unit 22 is very fast, it can be understood that the cutting and clamping operations of the cutting unit 22 are carried out simultaneously; or the cutting unit 22 cuts first and then clamps, and the cutting and clamping are closely connected; or the cutting unit 22 clamps first and then cuts, and the cutting and clamping are closely connected. For example, after the jaws quickly clamp the welding strip, the cutter 2232 quickly cuts the welding strip, reducing the time required for cutting and improving the cutting efficiency.

[0069] In some embodiments, see Figure 7 and Figure 8 The first gripper has a clearance surface 2221 and a clamping surface 2222 on the side facing the second gripper 2231. A clearance gap is formed between the clearance surface 2221 and the second gripper 2231, and a clamping gap is formed between the clamping surface 2222 and the second gripper 2231.

[0070] In this embodiment, when the welding strip passes between the first and second grippers 2231, it first passes through a clearance gap and then through a clamping gap. The width of the clearance gap is greater than the width of the clamping gap, allowing the welding strip to pass smoothly between the first and second grippers 2231. Simultaneously, the clamping gap formed between the clamping surface 2222 and the second gripper 2231 allows the first and second grippers 2231 to tightly clamp the welding strip, preventing it from moving or shifting during the cutting process, thus improving the accuracy and stability of the welding strip cutting.

[0071] In one embodiment, see Figure 7 and Figure 8 The side of the second gripper 2231 facing away from the first gripper is connected to the cutter 2232 via an elastic element 2233.

[0072] See Figure 7 The first gripper and bracket 221 can be integrally fixed on the mounting base of the welding strip cutting component. The cutter 2232 is connected to the movable bracket, and the driving component 24 drives the movable bracket to move the cutter 2232 left and right (that is... Figure 8The second gripper 2231 and the cutter 2232 are connected by an elastic element 2233 formed by the cooperation of a spring and a guide post. When the drive member 24 drives the cutter 2232 to move closer to the first gripper, the cutter 2232 drives the second gripper 2231 to move closer to the first gripper through the elastic element 2233. When the second gripper 2231 moves closer to the first gripper and clamps the welding strip, the cutter 2232 continues to move closer to the first gripper to cut the welding strip. At this time, the elastic element 2233 is in a compressed state.

[0073] In this embodiment, the elastic element 2233 can provide buffering and shock absorption when the cutter 2232 performs the cutting action, which helps to reduce the impact and vibration generated during the cutting process, protect the structural integrity of the cutter 2232 and the second gripper 2231, and improve the stability and accuracy of the cutting.

[0074] See Figures 1 to 3 This application provides a welding strip conveying device, which includes:

[0075] The conveying mechanism 1 includes a material pulling structure 11, which is used to convey the welding strip to the welding platform 200, and the welding platform 200 is used to receive the battery cells.

[0076] The above-mentioned welding strip cutting component, the cutting clamping mechanism 2 of the welding strip cutting component is adapted to be set at the feeding end of the welding platform 200, and the cutting clamping mechanism 2 can cut the welding strip to obtain a set length of welding strip;

[0077] When a set length of welding strip is used to connect adjacent battery cells, the first end of the set length welding strip is connected to the material pulling structure 11, and the tail end of the set length welding strip is fixedly connected to the cutting and clamping mechanism 2.

[0078] In one embodiment, the material pulling structure 11 consists of a wire pulling gripper (not shown in the figure) and a moving unit (not shown in the figure). The wire pulling gripper is used to clamp the first end of the welding strip, and the moving unit can drive the wire pulling gripper to move along the conveying direction of the welding strip to convey the welding strip to the battery cell of the welding platform 200, so as to facilitate the subsequent welding of the battery cell by the welding strip.

[0079] The moving speed of the wire-pulling jaws driven by the moving unit can be adjusted to match the welding speed of the solar cells and the production capacity requirements of the welded solar cells.

[0080] See Figure 2 and Figure 3The loading end of the welding platform 200 can be the left end of the welding platform 200. The welding strip is conveyed from the left side of the welding platform 200 to the welding platform 200. Since the cutting and clamping mechanism 2 is close to the loading end of the welding platform 200, when the welding strip on the welding platform 200 reaches the set length, the cutting and clamping mechanism 2 can cut the welding strip to obtain the set length of welding strip, which is convenient for welding the battery cells with the set length of welding strip.

[0081] In the event that the welding strip is cut, in order to avoid affecting the straightness of the welding strip due to sagging, the two ends of the welding strip of a set length can be pulled by the material pulling structure 11 and the cutting and clamping mechanism 2 respectively. For example, the first end formed by the right end of the welding strip of a set length is fixedly connected to the material pulling structure 11, and the tail end formed by the left end of the welding strip of a set length is fixedly connected to the cutting and clamping mechanism 2, so as to facilitate the application of the welding strip of a set length to the battery cell and ensure the welding efficiency and welding quality of the battery cell.

[0082] In one embodiment, the conveying mechanism 1 includes two material pulling structures 11, such as see [reference needed]. Figure 3 A material pulling structure 11 is set on each side of the welding strip conveying direction. When a set length of welding strip is cut off, a material pulling structure 11 and a cutting clamping mechanism 2 respectively pull the two ends of the set length of welding strip. The beginning of the subsequent welding strip can be pulled by another material pulling structure 11 and conveyed forward, thereby improving the efficiency of welding strip conveying.

[0083] In this embodiment, a cutting and clamping mechanism 2 is provided at the loading end adjacent to the welding platform 200. The cutting and clamping mechanism 2 clamps the welding strip while cutting it. Through the cooperation of the pulling structure 11 and the cutting and clamping mechanism 2, it ensures that the set length of welding strip remains horizontal or nearly horizontal, guaranteeing that the cut welding strip of the set length moves to the welding position of the battery cell on the welding platform 200, preventing the welding strip from bending during movement. Simultaneously, the stable structure of the set length welding strip facilitates the placement of another battery cell onto the welding strip by the cell-picking mechanism, simplifying the battery cell welding process, improving the compatibility between various mechanism components, and thus ensuring the quality and efficiency of battery cell string welding.

[0084] The welding strip cutting component provided in this application includes a conveying mechanism 1, which includes a pulling structure 11 for conveying welding strip to a welding platform 200 for receiving battery cells; and a cutting and clamping mechanism 2, which is adapted to be installed at the loading end of the welding platform 200 and can cut the welding strip to obtain a set length of welding strip. When the set length of welding strip is used to connect adjacent battery cells, the first end of the set length of welding strip is connected to the pulling structure 11, and the tail end of the set length of welding strip is fixed to the cutting and clamping mechanism 2, which simplifies the battery cell welding process and improves the compatibility between various mechanism components.

[0085] The material pulling structure smoothly pulls the welding strip and fixes the cut welding strip between the material pulling structure and the cutting clamping mechanism. This shortens the moving stroke of the material pulling structure, ensures the smooth movement of the welding strip during the stretching and conveying process, reduces the bending deformation of the welding strip, and improves the welding quality of the welding strip.

[0086] In some embodiments, see Figure 1 and Figure 2 The conveying mechanism 1 also includes an unwinding structure 12, a coating structure 13, a pressing structure 14, and a bending structure 15;

[0087] The unwinding structure 12 is used to unwind the welding strip to the drawing structure 11, the coating structure 13 is used to coat the welding strip with flux, the pressing structure 14 is used to tension the welding strip, and the bending structure 15 is used to form a bending position on the welding strip.

[0088] In the above embodiments, the unwinding structure 12 may include a stepping unwinding unit, a counterweight balancing unit, an overroll guide wheel unit, and an active buffer unit (not shown in the figure). The stepping unwinding unit can achieve high-speed and high-precision unwinding of the welding strip, and both unwinding accuracy and speed can be effectively controlled. The counterweight balancing unit utilizes its own gravity and a miniature guide rail to achieve free up-and-down movement without resistance during the welding strip pulling process, ensuring the unwinding balance of the welding strip. The overroll guide wheel unit can prevent the welding strip from sagging freely during transport and provide a guiding function for the welding strip. The active buffer unit is used to reduce the tension and speed of the welding strip during pulling, while preventing the welding strip from breaking during high-speed pulling.

[0089] During the conveying process, the coating structure 13 can uniformly and continuously apply flux to the surface of the welding strip and effectively control the flux concentration, thereby enhancing the welding quality. The clamping structure 14 tightens the welding strip before it is pulled out to prevent bending, and also has a welding strip pull-back function after the welding strip is cut, preparing for the next welding strip pull. To prevent microcracks and fragmentation in subsequent processes after the battery cells are connected in series, the welding strip is flattened by the bending structure 15 between the two sets of battery cells to ensure the quality of the finished product after battery assembly.

[0090] In one embodiment, the ribbon feeding process includes the following steps:

[0091] The first step is that the welding strip is output by the stepping unwinding unit. The welding strip passes through the over-rolling guide roller unit, winds around to the counterweight balancing unit, winds around to the over-rolling guide roller unit, and is output through the active buffer unit.

[0092] In the second step, the solder ribbon is conveyed to the coating structure 13 via the active buffer unit of the unwinding structure 12, and the coating structure 13 adsorbs the flux onto the solder ribbon.

[0093] The third step involves conveying the welding strip from the coating structure 13 to the pressing structure 14.

[0094] Fourth step, the welding strip is conveyed from the pressing structure 14 to the bending structure 15;

[0095] Fifth step, the welding strip is conveyed from the pulling structure 11 through the integrated guide groove output end of the bending structure 15 to the welding platform 200. The welding strip needs to pass through the cutting and clamping mechanism 2 before reaching the welding position.

[0096] Step 6: The cutting and clamping mechanism 2 cuts the welding strip and clamps the cut end of the welding strip, making it easier for the cell-retrieving mechanism to place the battery cell onto the welding strip in the next process.

[0097] By repeating the above steps, the battery cells can be connected in series via solder ribbons.

[0098] See Figures 1 to 3 This application provides a string welding device, which includes a welding platform 200 and the above-mentioned welding strip conveying device;

[0099] The feeding structure 11 is used to convey the welding strip to the welding platform 200, and the welding platform 200 is used to receive the battery cells.

[0100] In the above embodiments, the welding strip conveying device of the string welding equipment includes a conveying mechanism 1, which is used to convey the welding strip to the welding platform 200, and the welding platform 200 is used to receive the battery cells; a cutting and clamping mechanism 2, which is adapted to be set at the feeding end of the welding platform 200, and can cut the welding strip to obtain a set length of welding strip; when the set length of welding strip is used to connect adjacent battery cells, the first end of the set length of welding strip is connected to the pulling structure 11, and the tail end of the set length of welding strip is fixed to the cutting and clamping mechanism 2, which simplifies the battery cell welding process and improves the welding efficiency of the string welding equipment.

[0101] In one embodiment, see Figure 1 The welding platform 200 includes a conveyor belt 201, which is used to carry and transport the battery cells.

[0102] In this embodiment, the conveyor belt 201 can be used to continuously and stably transport the welded battery cells, enabling the welding platform 200 to maintain continuous operation, thereby improving production efficiency.

[0103] In addition, the conveying device of the welding platform 200 can also adopt a chain conveyor structure or a roller conveyor structure, both of which can achieve stable bearing and conveying of the welding strip.

[0104] In one embodiment, the stringing equipment further includes a wafer picking mechanism (not shown) for transferring the battery cells to the welding platform 200.

[0105] In this embodiment, the cell-grabbing mechanism can automatically pick up the battery cells from the feeding device and accurately transfer them to the welding platform 200, reducing the time spent on manual handling and placement and improving the efficiency of cell-grabbing.

[0106] Specifically, the cell-retrieving mechanism typically uses flexible grippers or suction cups to retrieve solar cells. Flexible grippers and suction cups can reduce damage to the solar cells and ensure the structural integrity of the solar cells.

[0107] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A strip cutting assembly, characterized by The application relates to a welding strip cutting device. The device comprises a mounting base (23) and a driving member (24) arranged on the mounting base (23); The device further comprises a cutting and clamping mechanism (2) comprising a cutting unit (22), wherein the driving member (24) is configured to drive the cutting unit (22) to act, and the cutting unit (22) can cut and clamp a welding strip to obtain a welding strip with a set length. The cutting and clamping mechanism (2) comprises a lifting unit (21) arranged on the mounting base (23), and the cutting unit (22) is connected to the lifting unit (21) and has a avoiding position and a cutting position. When the cutting unit (22) is in the avoiding position, the cutting unit (22) avoids the conveying path of the welding strip. When the cutting unit (22) is in the cutting position, the cutting unit (22) extends into the conveying path of the welding strip and can cut the welding strip.

2. The solder strip cutting component of claim 1, wherein, The cutting unit (22) comprises a support (221), a first cutting clamp (222) and a second cutting clamp (223), the first cutting clamp (222) is fixed to the support (221), and the second cutting clamp (223) can approach or move away from the first cutting clamp (222) to form a clamping gap between the first cutting clamp (222) and the second cutting clamp (223). The tail end of the welding strip with the set length is clamped in the clamping gap.

3. The solder strip cutting component of claim 2, wherein, The first cutting clamp (222) comprises a first clamping jaw, the second cutting clamp (223) comprises a second clamping jaw (2231) and a cutting knife (2232), the second clamping jaw (2231) is used for clamping the tail end of the welding strip with the set length together with the first clamping jaw, and the cutting knife (2232) is used for cooperating with the first clamping jaw to cut the welding strip and obtain the welding strip with the set length.

4. The solder strip cutting assembly of claim 3, wherein, The side of the first clamping jaw facing the second clamping jaw (2231) forms an avoiding surface (2221) and a clamping surface (2222), the avoiding surface (2221) forms an avoiding gap with the second clamping jaw (2231), and the clamping surface (2222) forms the clamping gap with the second clamping jaw (2231).

5. The solder strip cutting assembly of claim 3, wherein, The side of the second clamping jaw (2231) away from the first clamping jaw is connected to the cutting knife (2232) through an elastic member (2233).

6. A solder strip delivery device characterized by, The device comprises a conveying mechanism (1) comprising a material pulling structure (11) used for conveying a welding strip to a welding platform (200) used for receiving a battery piece. The welding strip cutting device according to any one of claims 1-5 is suitable to be arranged at a feeding end of the welding platform (200), and the cutting and clamping mechanism (2) can cut the welding strip to obtain a welding strip with a set length. When the welding strip with the set length is used for connecting adjacent battery pieces, the head end of the welding strip with the set length is connected to the material pulling structure (11), and the tail end of the welding strip with the set length is fixed to the cutting and clamping mechanism (2). ​ 7. The solder strip conveying device according to claim 6, characterized in that The conveying mechanism (1) further comprises a unwinding structure (12), a coating structure (13), a pressing structure (14) and a bending structure (15); The unwinding structure (12) is used for unwinding the solder strip to the pulling structure (11), the coating structure (13) is used for coating the solder strip with flux, the pressing structure (14) is used for tensioning the solder strip, and the bending structure (15) is used for forming a bending position on the solder strip.

8. A string welding apparatus characterized by, The welding platform (200) and the solder strip conveying device of claim 6 or 7 are comprised. The pulling structure (11) is used for conveying the solder strip to the welding platform (200), and the welding platform (200) is used for receiving the battery piece.

9. The stringer welding apparatus of claim 8, wherein, The welding platform (200) comprises a conveying belt (201) used for carrying and conveying the battery piece.

10. The stringer welding apparatus of claim 8, wherein, Further comprising a piece taking mechanism used for transferring the battery piece to the welding platform (200).

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