Welding ribbon processing device, welding ribbon processing method and string welding machine

Abstract

The present invention discloses a welding ribbon processing device, a welding ribbon processing method and a string welding machine, wherein the welding ribbon processing device is sequentially provided with a material taking station, a slitting station, a transfer station and a stringing station, and the welding ribbon processing device includes a first traction mechanism and a second traction mechanism, the first traction mechanism moves back and forth between the material taking station and the transfer station, the first traction mechanism is used to clamp the welding ribbon at the material taking station and transfer the clamped welding ribbon to the second traction mechanism; the second traction mechanism moves back and forth between the transfer station and the stringing station, the second traction mechanism is used to clamp the welding ribbon transferred by the first traction mechanism, after the second traction mechanism clamps the welding ribbon transferred by the first traction mechanism, the first traction mechanism releases the welding ribbon and moves to the material taking station, the welding ribbon clamped by the second traction mechanism is cut at the slitting station to obtain a welding ribbon segment of a predetermined length, and the second traction mechanism is also used to transfer the welding ribbon segment to the stringing station. The above-mentioned welding ribbon processing device can greatly improve the processing efficiency of the welding ribbon.

Description

Technical Field

[0001] The present invention belongs to the technical field of solar cell production, and in particular relates to a soldering ribbon processing device, a soldering ribbon processing method and a string soldering machine. Background Art

[0002] Multi-grid solar cells typically have 2 to 6 busbars, meaning each cell uses 2 to 6 fixed-length ribbons arranged side by side on a single side. As demand for cell photoelectric conversion efficiency increases, dense-grid cells with more busbars are appearing on the market. The ribbons placed on the busbars need to be pulled from the ribbon reel by the stringer's ribbon processing device and cut to a predetermined length. Alternatively, a busbarless cell can be used. Both dense-grid and busbarless cells require more ribbons and require more efficient ribbon feeding.

[0003] Traditionally, the ribbon handling method involves stretching the ribbon forward from its initial position to a fixed length using a ribbon handling device. A slitting mechanism then cuts the ribbon to that fixed length. The ribbon handling device then pulls the ribbon to the cell placement position, waiting for the robot to place the cells. After placement, the ribbon handling device releases the fixed length ribbon, returns to its initial position, and repeats the process. This method requires each operation to complete before the previous one can begin, which is time-consuming and inefficient. Summary of the Invention

[0004] The object of the present invention is to provide a solder strip processing device, a solder strip processing method and a string welding machine to solve the problem of low production efficiency of the solder strip processing device in the existing battery cell string welding process.

[0005] To achieve this object, in a first aspect, the present invention adopts the following technical solutions:

[0006] A welding strip processing device is provided with a material picking station, a slitting station, a transfer station and a stringing station in sequence. The slitting station is located between the material picking station and the transfer station and is close to the material picking station. The welding strip processing device includes a first traction mechanism and a second traction mechanism, wherein the first traction mechanism moves back and forth between the material picking station and the transfer station, the first traction mechanism is used to clamp the welding strip at the material picking station and transfer the clamped welding strip to the second traction mechanism; the second traction mechanism moves back and forth between the transfer station and the stringing station, the second traction mechanism is used to clamp the welding strip transferred by the first traction mechanism, after the second traction mechanism clamps the welding strip transferred by the first traction mechanism, the first traction mechanism releases the welding strip and moves to the material picking station, the welding strip clamped by the second traction mechanism is cut at the slitting station to obtain a welding strip segment of a predetermined length, and the second traction mechanism is also used to transfer the welding strip segment to the stringing station.

[0007] The first traction mechanism and the second traction mechanism cooperate to complete the pulling action of the welding ribbon from the material taking station and the transfer station to the string assembly station, and the welding ribbon is cut at the slitting station during the process to obtain welding ribbon segments of predetermined length for subsequent welding with battery cells. The device has a simple structure, flexible and precise movements, and improves the processing efficiency of the welding ribbon. After the first traction mechanism transfers the welding ribbon to the second traction mechanism, the next process can be carried out. The welding ribbon cutting does not affect the next welding ribbon taking by the first traction mechanism, thereby improving the processing efficiency of the welding ribbon.

[0008] Optionally, the welding ribbon processing device further includes a pressing assembly, which is located in front of the material retrieving station and is used to press the welding ribbon entering the material retrieving station.

[0009] By clamping the assembly, the welding ribbon can be kept in a stable state during the subsequent pulling and slitting processes, thereby improving the welding ribbon processing accuracy and efficiency and preventing the welding ribbon from falling off from the material retrieving station after being cut by the cutter.

[0010] Optionally, the welding ribbon processing device further includes a tail clamp mechanism, which is located in front of the string assembly station and is used to cooperate with the second traction mechanism to tension the welding ribbon segment when the second traction mechanism lays the welding ribbon segment toward the string assembly station.

[0011] The tail clamp mechanism is used to keep the welding ribbon segment in a tensioned state when it is transported from the second traction mechanism to the string assembly station, thereby ensuring the accuracy of laying the welding ribbon segment and avoiding deviation of the welding ribbon during the transfer and laying process.

[0012] Optionally, the first traction mechanism includes a first drive module and a first clamping assembly, the first drive module is used to at least drive the first clamping assembly to move along the length direction of the weld strip, the first clamping assembly is used to clamp the predetermined position of the weld strip end and release it after the weld strip is transferred to the second traction mechanism for clamping, and there is a predetermined distance between the predetermined position and the weld strip end for clamping by the second traction mechanism; the second traction mechanism includes a second drive module and a second clamping assembly, the second drive module is used to at least drive the second clamping assembly to move along the length direction of the weld strip, the second clamping assembly is used to clamp the weld strip end transferred by the first clamping assembly, and release the weld strip segment after the weld strip segment obtained after cutting is transferred to the stringing station for stringing.

[0013] The transfer of the welding ribbon is completed by the first clamping assembly driven by the first driving module and the second clamping assembly driven by the second driving module. The action is accurate and efficient, thereby improving the pulling efficiency.

[0014] Optionally, the first clamping assembly can be lifted and lowered relative to the welding strip conveying plane, so that the first clamping assembly has a high operating position for taking the welding strip and a low operating position for placing the welding strip.

[0015] By giving the first clamping component a lifting function, the flexibility of the mechanism is improved and obstacles on the moving path are avoided.

[0016] Optionally, the weld strip processing device further includes a lifting mechanism, which includes a weld strip lifting portion and a lifting moving portion, wherein the lifting moving portion is used to drive the weld strip lifting portion to move back and forth between the transfer station and the string assembly station; the weld strip lifting portion is used to lift the weld strip transferred by the first traction mechanism, and the lifting moving portion drives the weld strip lifting portion and the second traction mechanism to move synchronously to move the weld strip from the transfer station to the string assembly station.

[0017] The lifting mechanism cooperates with the second traction mechanism to drag the welding ribbon from the transfer station to the tail clamp mechanism, ensuring that the welding ribbon is stably pulled by the second traction mechanism, thereby avoiding the welding ribbon from moving during the movement of the second traction mechanism.

[0018] Optionally, the welding strip lifting part includes a welding strip guide groove and a sealing mechanism located at the end of the welding strip guide groove, and the sealing mechanism has an open position and a closed position. When the sealing mechanism is in the open position, the welding strip falls into the guide groove; when the sealing mechanism is in the closed position, the welding strip falling into the guide groove is limited in the guide groove.

[0019] The position accuracy of the welding strip is improved by the welding strip guide groove and the blocking mechanism, so that the welding strip can be accurately moved and passed through the rear channel.

[0020] Optionally, the welding strip processing device further includes a slitting mechanism and a flattening mechanism, wherein the slitting mechanism is located at the slitting station and is used to slit the welding strip; the flattening mechanism is located in front of the material taking station and is used to flatten the predetermined position of the welding strip.

[0021] The flattening mechanism flattens the solder ribbon into shape, and the slitting mechanism cuts the solder ribbon into specified lengths to meet the needs of cell string welding, reduce the difficulty of solder ribbon processing, and improve processing efficiency.

[0022] Optionally, the slitting mechanism includes a cutter with a notch provided on the cutter for allowing the welding ribbon to pass through. Two cutters are placed side by side and slide relative to each other to cut the welding ribbon.

[0023] The two cutting knives slide relative to each other to easily pass and cut the welding ribbon, reducing the difficulty of slitting.

[0024] Optionally, the cutter can be lifted and lowered relative to the welding ribbon conveying plane, so that the slitting mechanism does not affect the reciprocating movement of the first traction mechanism in the welding ribbon processing device.

[0025] By giving the cutter a lifting function, interference with the action of the first traction mechanism is avoided, thereby improving traction efficiency.

[0026] Optionally, the first traction mechanism clamps the welding ribbon from the left and right sides in the length direction of the welding ribbon.

[0027] By clamping on both sides, the difficulty of the mechanism action is reduced, ensuring reliable clamping of the welding strip.

[0028] In the second aspect, the present invention adopts the following technical solutions:

[0029] A method for processing a welding strip, comprising:

[0030] Controlling the first traction mechanism to clamp the welding strip from the material taking station and towing the clamped welding strip to the transfer station;

[0031] Controlling the second traction mechanism to receive the welding strip handed over from the first traction mechanism at the transfer station, and controlling the first traction mechanism to release the welding strip and retreat to the material taking station to clamp the subsequent welding strip from the material taking station;

[0032] The welding strip is cut at the slitting station to obtain a fixed length of welding strip. The slitting station is located between the reclaiming station and the transfer station and is close to the reclaiming station.

[0033] The second traction mechanism is controlled to pull the clamped and cut welding ribbon segment to the string assembly station, and the second traction mechanism is controlled to lay the welding ribbon segment to the string assembly station and then move it to the transfer station to receive the subsequent welding ribbon from the first traction mechanism.

[0034] The welding ribbon is pulled from the material taking station to the transfer station by the first traction mechanism, and then pulled from the transfer station to the string assembly station by the second traction mechanism. During the process, the welding ribbon is cut to a fixed length by the slitting station, which simplifies the movement of the traction mechanism and reduces the handover waiting time, thereby shortening the welding ribbon processing time and improving production efficiency.

[0035] Optionally, the lifting mechanism is controlled to carry the welding ribbon segment pulled by the second pulling mechanism at the transfer station, and the lifting mechanism and the second pulling mechanism are controlled to move synchronously to transport the welding ribbon segment to the string assembly station.

[0036] The lifting mechanism cooperates with the second traction mechanism to carry the welding strip at the transfer station, ensuring that the welding strip is stably pulled by the second traction mechanism.

[0037] In the third aspect, the present invention adopts the following technical solutions:

[0038] A string welding machine comprises a transport mechanism, a cell feeding mechanism, a string connection mechanism and the above-mentioned soldering tape processing device, wherein the soldering tape processing device is used to obtain fixed-length soldering tape segments and lay the soldering tape segments to the stringing station of the transport mechanism; the cell feeding mechanism is used to lay the cell to the stringing station of the transport mechanism; the transport mechanism is used to transport the cell stacked at the stringing station and the soldering tape segments to the string connection station; the string connection mechanism is used to string the stacked cell stacks and soldering tape segments into a cell string at the string connection station.

[0039] Through the cooperation of the battery cell feeding mechanism, welding processing device, transportation mechanism and serial connection mechanism, efficient loading and stringing of battery cells and welding ribbon segments can be achieved, thereby realizing automatic welding of battery strings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the overall structure of the welding strip processing device provided by an embodiment of the present invention;

[0041] Figure 2 Schematic diagram of the positions of the first traction mechanism and the slitting mechanism in the welding ribbon processing device provided by an embodiment of the present invention;

[0042] Figure 3 Schematic diagram of the positions of the second traction mechanism and the lifting mechanism in the welding ribbon processing device provided by an embodiment of the present invention;

[0043] Figure 4 2 is a schematic structural diagram of a tail clamp mechanism in a welding ribbon processing device provided by an embodiment of the present invention;

[0044] Figure 5 Schematic diagram of the structure of the flattening mechanism in the welding ribbon processing device provided by an embodiment of the present invention;

[0045] Figure 6 It is a structural schematic diagram of the pressing assembly in the welding ribbon processing device provided by an embodiment of the present invention.

[0046] Figures 1 to 6 The following reference numerals are included:

[0047] A first traction mechanism 100, a first driving module 110, and a first clamping assembly 120;

[0048] A second traction mechanism 200, a second driving module 210, and a second clamping assembly 220;

[0049] Compression assembly 300, base plate 310, crossbeam 320, compression rod 330, elastic pad 340, tensioning block 350, spring 360, cylinder 370, push plate 380;

[0050] Tail clip mechanism 400;

[0051] Slitting mechanism 500, cutter 510; notch 520;

[0052] Flattening mechanism 600;

[0053] Transport Agency 700. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] The solder ribbon placed on the grid lines of multi-grid solar cells requires the stringer's traction device to pull the ribbon from the ribbon reel and cut it into predetermined lengths. Traditionally, the ribbon handling method involves using the ribbon traction device to stretch the ribbon forward from its initial position to a predetermined length. A slitting mechanism then cuts the ribbon to that predetermined length. The ribbon traction device then pulls the ribbon to the cell placement position, waiting for the robot to place the cell. After placement, the ribbon traction device releases the ribbon and returns to its initial position, repeating the process. Therefore, each operation requires the previous one to be completed before it can begin, which is time-consuming and inefficient.

[0056] Therefore, the present invention provides a welding strip processing device, which optimizes the structure and operation of the existing processing device and improves the welding strip processing efficiency. Figure 1 As shown, the solder strip processing device provided by an embodiment of the present invention is provided with a material taking station, a slitting station, a transfer station and a stringing station in sequence, wherein the slitting station is located between the material taking station and the transfer station and close to the material taking station, and the solder strip processing device includes a first traction mechanism 100 and a second traction mechanism 200.

[0057] The first traction mechanism 100 moves back and forth between the material taking station and the transfer station. The first traction mechanism 100 is used to clamp the welding ribbon at the material taking station and transfer the clamped welding ribbon to the second traction mechanism 200 .

[0058] Specifically, see Figure 1 and Figure 2 The first traction mechanism 100 includes a first driving module 110 and a first clamping assembly 120. The first driving module 110 is used to at least drive the first clamping assembly 120 to move along the length direction of the welding strip. The first clamping assembly 120 is used to clamp the predetermined position of the end of the welding strip and release it after the welding strip is transferred to the second traction mechanism 200 for clamping. There is a predetermined distance between the predetermined position and the end of the welding strip for the second traction mechanism 200 to clamp.

[0059] Furthermore, the first clamping assembly 120 can be raised and lowered relative to the welding ribbon conveying plane, so that the first clamping assembly 120 has a high operating position for taking the welding ribbon and a low operating position for placing the welding ribbon. Figure 1 The first driving module 110 can also drive the first clamping assembly 120 to move up and down, which can be achieved specifically through vertical guide rails and sliders, thereby improving the flexibility of the mechanism and avoiding obstacles on the moving path.

[0060] Among them, the second traction mechanism 200 moves back and forth between the transfer station and the string assembly station. The second traction mechanism 200 is used to clamp the welding ribbon transferred by the first traction mechanism 100. After the second traction mechanism 200 clamps the welding ribbon transferred by the first traction mechanism 100, the first traction mechanism 100 releases the welding ribbon and moves to the material taking station. The welding ribbon clamped by the second traction mechanism 200 is cut at the slitting station to obtain welding ribbon segments of predetermined length. The second traction mechanism 200 is also used to transfer the welding ribbon segments to the string assembly station.

[0061] Specifically, see Figure 1 and Figure 3 The second traction mechanism 200 includes a second driving module 210 and a second clamping assembly 220. The second driving module 210 is used to at least drive the second clamping assembly 220 to move along the length direction of the welding strip. The second clamping assembly 220 is used to clamp the end of the welding strip transferred by the first clamping assembly 120, and release the welding strip segment after transferring the welding strip segment obtained after cutting to the stringing station for stringing.

[0062] As can be seen, the coordinated handover between the first traction mechanism 100 and the second traction mechanism 200 completes the pulling action of the solder ribbon from the material-retrieving station and the transfer station to the stringing station. During this process, the solder ribbon is cut at the slitting station to obtain solder ribbon segments of a predetermined length for subsequent welding to the battery cells. The device has a simple structure and flexible and precise movements, which improves the efficiency of solder ribbon processing. In addition, the transfer of the solder ribbon is completed by the first clamping assembly 120 driven by the first drive module 110 and the second clamping assembly 220 driven by the second drive module 210. The action is accurate and efficient, improving the pulling efficiency.

[0063] On this basis, the welding ribbon processing device further includes a pressing component 300, which is located in front of the material retrieving station and is used to press the welding ribbon entering the material retrieving station.

[0064] Specifically, see Figure 5 and Figure 6The pressing assembly 300 includes a bottom plate 310 located below the welding ribbon conveyor line and a crossbeam 320 located above the welding ribbon conveyor line. The bottom plate 310 and the crossbeam 320 are arranged in a direction perpendicular to the welding ribbon conveying direction. A plurality of pressure rods 330 are rotatably arranged on the crossbeam 320. Each pressure rod 330 is spaced apart along the arrangement direction of the crossbeam 320. An elastic pad 340 is provided on the bottom plate 310 corresponding to each pressure rod 330. A tensioning block 350 is provided on the upper surface of the crossbeam 320. The tensioning block 350 and the pressure rod 330 are connected to each other. 0 is provided with a spring 360, so that the lower end of the pressure rod 330 is against the elastic pad 340; the lower surface of the crossbeam 320 is provided with a cylinder 370, and the output rod of the cylinder 370 is provided with a push plate 380 acting on the pressure rod 330. The gap between each pressure rod 330 and the elastic pad 340 is enough for a welding strip to pass through. The spring 360 keeps the pressure rod 330 in a state of pressing against the elastic pad 340 at all times, and the cylinder 370 pushes the push plate 380 to realize the unified upward rotation or lowering of each pressure rod 330.

[0065] Furthermore, the position of the tension block 350 on the beam 320 relative to the compression rod 330 is adjustable, so that the pressure of the compression rod 330 on the elastic pad 340 can be adjusted by means of the tension block 350 .

[0066] It can be seen that the pressing assembly 300 ensures that the welding ribbon remains in a stable state during subsequent pulling, slitting and other processes, thereby improving the processing accuracy and efficiency of the welding ribbon.

[0067] Of course, the clamping assembly can be the above-mentioned continuous clamping assembly, which continuously provides a clamping force to the solder ribbon without affecting the traction and feeding of the solder ribbon. Alternatively, the clamping assembly can be a lifting pressure head driven by a cylinder, which provides pressure to the solder ribbon when it is necessary to cut the solder ribbon and releases the solder ribbon when it is necessary to feed the solder ribbon.

[0068] On this basis, the welding ribbon processing device also includes a tail clamp mechanism 400, which is located in front of the stringing station and is used to cooperate with the second traction mechanism 200 to tension the welding ribbon segment when the second traction mechanism 200 lays the welding ribbon segment to the stringing station.

[0069] It can be seen that the tail clamp mechanism 400 is used to keep the welding ribbon segment in a tensioned state when it is transported from the second traction mechanism 200 to the string assembly station, thereby ensuring the laying effect of the welding ribbon segment.

[0070] On this basis, the ribbon processing device also includes a lifting mechanism, see Figure 1 As shown; the lifting mechanism includes a welding strip lifting part and a lifting moving part, the lifting moving part is used to drive the welding strip lifting part to move back and forth between the transfer station and the string assembly station; the welding strip lifting part is used to lift the welding strip transferred by the first traction mechanism 100, and the lifting moving part drives the welding strip lifting part and the second traction mechanism 200 to move synchronously to move the welding strip of the transfer station to the string assembly station.

[0071] Furthermore, the welding strip holding portion includes a welding strip guide groove and a sealing mechanism located at the end of the welding strip guide groove. The sealing mechanism has an open position and a closed position. When the sealing mechanism is in the open position, the welding strip is inserted into the guide groove; when the sealing mechanism is in the closed position, the welding strip falling into the guide groove is limited in the guide groove.

[0072] In one implementation, the blocking mechanism includes a driving cylinder and a blocking rod, the blocking rod is connected to the driving cylinder, and the pressing rod is driven by the driving cylinder to block the guide groove to limit the welding strip.

[0073] It can be seen that the lifting mechanism cooperates with the second traction mechanism 200 to drag the soldering ribbon from the transfer station to the tail clamp mechanism 400, and the soldering ribbon guide groove and the sealing mechanism are used to improve the position of the soldering ribbon so that the subsequent tail clamp mechanism 400 can accurately clamp the soldering ribbon, ensuring that the soldering ribbon is stably pulled by the second traction mechanism 200.

[0074] In one implementation, the welding ribbon can be transferred from the lifting mechanism to the tail clamp and then enter the string assembly station; or the welding ribbon can also be directly transferred from the lifting mechanism to the string assembly station.

[0075] On this basis, the welding strip processing device further includes a slitting mechanism 500, which is located at the slitting station and is used for slitting the welding strip.

[0076] Specifically, see Figure 2 The slitting mechanism 500 includes a cutter 510, which is provided with a notch 520 for allowing the soldering ribbon to pass through. The two cutters 510 are placed side by side and slide relative to each other to cut the soldering ribbon.

[0077] Furthermore, the cutter 510 can be lifted and lowered relative to the welding ribbon conveying plane, and can be specifically driven to lift and lower by the cylinder 370, so that the slitting mechanism 500 does not affect the reciprocating movement of the first traction mechanism 100 in the welding ribbon processing device.

[0078] It can be seen that the two cutting knives 510 that slide relative to each other can simply pass through and cut the welding ribbon, reducing the difficulty of slitting. Moreover, by giving the cutting knives 510 a lifting function, interference with the action of the first traction mechanism 100 is avoided, thereby improving the traction efficiency.

[0079] On this basis, the welding strip processing device further includes a flattening mechanism 600, which is located in front of the material taking station and is used to flatten the predetermined position of the welding strip.

[0080] Specifically, see Figure 5 The flattening mechanism 600 is located between the clamping mechanism and the material retrieving station, and is used to flatten the compressed welding strip first, so that the flattened part of the welding strip after entering the material retrieving station is more convenient for the first traction mechanism 100 to clamp.

[0081] It can be seen that the solder ribbon is flattened into shape by the flattening mechanism 600 and cut into a specified length by the slitting mechanism 500, which meets the needs of battery cell string welding, reduces the difficulty of solder ribbon processing, and improves processing efficiency.

[0082] Furthermore, the first pulling mechanism 100 clamps the welding ribbon from the left and right sides in the length direction of the welding ribbon.

[0083] It can be seen that the two-side clamping method reduces the difficulty of the first traction mechanism 100 and ensures reliable clamping of the welding strip.

[0084] The welding strip processing device provided in this embodiment has the following advantages:

[0085] (1) The first traction mechanism 100 and the second traction mechanism 200 are designed to cooperate with each other to complete the traction action of the welding ribbon from the material taking station and the transfer station to the string assembly station. In the process, the welding ribbon is cut at the slitting station to obtain welding ribbon segments of predetermined lengths for subsequent welding with battery cells. The device has a simple structure, flexible and precise movements, and improves the processing efficiency of the welding ribbon;

[0086] (2) The clamping assembly 300 is designed to ensure that the welding ribbon remains in a stable state during subsequent pulling and slitting processes, thereby improving the processing accuracy and efficiency of the welding ribbon.

[0087] (3) The tail clamp mechanism 400 is designed to keep the welding ribbon segment in a tensioned state when it is transported from the second traction mechanism 200 to the string assembly station, thereby ensuring the laying effect of the welding ribbon segment;

[0088] (4) The lifting mechanism 500 is designed to cooperate with the second traction mechanism 200 to drag the solder ribbon from the transfer station to the tail clamp, ensuring that the solder ribbon is stably pulled by the second traction mechanism 200;

[0089] (5) The flattening mechanism 600 is designed to flatten the solder ribbon into shape, and the solder ribbon is cut into a specified length by the slitting mechanism 500 to meet the needs of battery cell string welding, thereby reducing the difficulty of solder ribbon processing and improving processing efficiency;

[0090] (6) The first traction mechanism 100 and the cutter 510 in the slitting mechanism 500 are given the function of lifting and lowering, so that the traction and slitting actions are orderly and efficient, avoiding mutual interference and improving the action efficiency.

[0091] Based on the inspiration of the above-mentioned welding ribbon processing device, an embodiment of the present invention further provides a welding ribbon processing method, which includes the following steps:

[0092] Step 1: Control the first traction mechanism 100 to clamp the welding ribbon from the material taking station and pull the clamped welding ribbon to the transfer station;

[0093] Step 2: Control the second traction mechanism 200 to receive the solder strip delivered from the first traction mechanism 100 at the transfer station, control the first traction mechanism 100 to release the solder strip and retreat to the material taking station to clamp the subsequent solder strip;

[0094] Step 3: Cut the welding ribbon at the slitting station to obtain a fixed length of welding ribbon segment. The slitting station is located between the retrieving station and the transfer station and is close to the retrieving station.

[0095] Step 4: Control the second traction mechanism 200 to pull the clamped and cut welding ribbon segments to the string assembly station, control the second traction mechanism 200 to lay the welding ribbon segments to the string assembly station and then move to the transfer station to receive the subsequent welding ribbons from the first traction mechanism 100.

[0096] It can be seen that the welding ribbon is pulled from the material taking station to the transfer station by the first traction mechanism 100, and then pulled from the transfer station to the stringing station by the second traction mechanism 200. During the process, the welding ribbon is cut to a fixed length by the slitting station, which simplifies the action of the traction mechanism and reduces the waiting time for the handover between the first traction mechanism 100 and the second traction mechanism 200. It avoids the need to cut the welding ribbon before the next welding ribbon taking in the traditional method, reduces the waiting time of the first traction mechanism caused by the cutting of the welding ribbon, thereby shortening the welding ribbon processing time and improving production efficiency.

[0097] Furthermore, before step 4, the lifting mechanism is controlled to carry the welding ribbon segment pulled by the second pulling mechanism 200 at the transfer station, and the lifting mechanism and the second pulling mechanism 200 are controlled to move synchronously to transport the welding ribbon segment to the string assembly station.

[0098] Therefore, the lifting mechanism cooperates with the second traction mechanism 200 to carry the soldering ribbon at the transfer station, ensuring that the soldering ribbon is stably pulled by the second traction mechanism 200 .

[0099] In addition, based on the structure of the above-mentioned solder ribbon processing device, an embodiment of the present invention further provides a stringing machine, which includes a transportation mechanism 700, a battery cell feeding mechanism, a stringing mechanism and the above-mentioned solder ribbon processing device.

[0100] The ribbon processing device is used to obtain fixed-length ribbon segments and lay them down at the stringing station of the transport mechanism 700. The cell feeding mechanism is used to lay cells down at the stringing station of the transport mechanism 700. The transport mechanism 700 is used to transport the stacked cells and ribbon segments at the stringing station to the stringing station. The stringing mechanism is used to string the stacked cells and ribbons together into strings at the stringing station. The stringing mechanism can be at least one of an infrared welding lamp, a laser welding device, or a light-curing welding device.

[0101] It can be seen that through the cooperation of the battery cell feeding mechanism, welding processing device, transportation mechanism and serial connection mechanism, the loading and stringing of battery cells and welding ribbon segments are realized, thereby realizing the automatic welding of battery strings.

[0102] The above embodiments merely illustrate the basic principles and features of the present invention and are not intended to be limiting. Various modifications and variations may be made to the present invention without departing from the spirit and scope of the present invention. Such modifications and variations are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding strip processing device, characterized in that: The welding strip processing device is provided with a material taking station, a slitting station, a transfer station and a stringing station in sequence. The slitting station is located between the material taking station and the transfer station and is close to the material taking station. The welding strip processing device includes a first traction mechanism and a second traction mechanism, wherein, The first traction mechanism reciprocates between the material retrieving station and the transfer station, and is used to clamp the welding ribbon at the material retrieving station and transfer the clamped welding ribbon to the second traction mechanism; The second traction mechanism reciprocates between the transfer station and the string assembly station. The second traction mechanism is used to clamp the welding ribbon transferred by the first traction mechanism. After the second traction mechanism clamps the welding ribbon transferred by the first traction mechanism, the first traction mechanism releases the welding ribbon and moves to the material taking station. The welding ribbon clamped by the second traction mechanism is cut at the slitting station to obtain welding ribbon segments of predetermined length. The second traction mechanism is also used to transfer the welding ribbon segments to the string assembly station. The first traction mechanism includes a first driving module and a first clamping assembly, wherein the first driving module is used to at least drive the first clamping assembly to move along the length direction of the welding ribbon, and the first clamping assembly is used to clamp the predetermined position of the end of the welding ribbon and release it after the welding ribbon is transferred to the second traction mechanism for clamping. There is a predetermined distance between the predetermined position and the end of the welding ribbon for clamping by the second traction mechanism; The second traction mechanism includes a second drive module and a second clamping assembly. The second drive module is used to at least drive the second clamping assembly to move along the length direction of the welding ribbon. The second clamping assembly is used to clamp the end of the welding ribbon transferred by the first clamping assembly, and release the welding ribbon segment after the welding ribbon segment obtained after cutting is transferred to the stringing station for stringing.

2. The welding strip processing device according to claim 1, characterized in that The welding ribbon processing device further comprises a pressing assembly, which is located in front of the material taking station and is used to press the welding ribbon entering the material taking station.

3. The welding strip processing device according to claim 1, characterized in that: The welding ribbon processing device further includes a tail clamp mechanism, which is located in front of the string group station and is used to cooperate with the second traction mechanism to tension the welding ribbon segment when the second traction mechanism lays the welding ribbon segment toward the string group station.

4. The welding strip processing device according to claim 1, characterized in that: The first clamping assembly can be lifted and lowered relative to the welding strip conveying plane, so that the first clamping assembly has a high operating position for taking the welding strip and a low operating position for placing the welding strip.

5. The welding strip processing device according to claim 1, characterized in that: The welding strip processing device further includes a lifting mechanism, which includes a welding strip lifting portion and a lifting moving portion, wherein: The lifting and moving part is used to drive the welding ribbon lifting part to move back and forth between the transfer station and the string assembly station; The welding ribbon lifting part is used to lift the welding ribbon transferred by the first traction mechanism, and the lifting and moving part drives the welding ribbon lifting part and the second traction mechanism to move synchronously to move the welding ribbon of the transfer station to the stringing station.

6. The welding strip processing device according to claim 5, characterized in that: The welding ribbon lifting portion includes a welding ribbon guide groove and a blocking mechanism located at the end of the welding ribbon guide groove, and the blocking mechanism has an open position and a closed position. When the blocking mechanism is in the open position, the welding strip falls into the guide groove; when the blocking mechanism is in the closed position, the welding strip falling into the guide groove is confined in the guide groove.

7. The welding strip processing device according to claim 1, characterized in that: The welding ribbon processing device further includes a slitting mechanism and a flattening mechanism, wherein: The slitting mechanism is located at the slitting station and is used for slitting the welding strip; The flattening mechanism is located in the front of the material taking station and is used to flatten the predetermined position of the welding strip.

8. The welding ribbon processing device according to claim 7, characterized in that: The slitting mechanism includes a cutter, and a notch is provided on the cutter to allow the welding ribbon to pass through. Two pieces of the cutter are placed side by side and slide relative to each other to cut the welding ribbon.

9. The welding ribbon processing device according to claim 8, characterized in that: The cutter can be lifted and lowered relative to the welding ribbon conveying plane, so that the slitting mechanism does not affect the reciprocating movement of the first traction mechanism in the welding ribbon processing device.

10. The welding ribbon processing device according to claim 1, characterized in that: The first traction mechanism clamps the welding ribbon from the left and right sides in the length direction of the welding ribbon.

11. A method for processing a welding strip, characterized in that: The solder strip processing method is implemented by the solder strip processing device according to any one of claims 1 to 10, comprising: Controlling the first traction mechanism to clamp the welding strip from the material taking station and towing the clamped welding strip to the transfer station; Controlling the second traction mechanism to receive the welding ribbon handed over from the first traction mechanism at the transfer station, and controlling the first traction mechanism to release the welding ribbon and retreat to the retrieving station to clamp the subsequent welding ribbon from the retrieving station; Cutting the welding ribbon at a slitting station to obtain a fixed-length welding ribbon segment, wherein the slitting station is located between the retrieving station and the transfer station and is close to the retrieving station; The second traction mechanism is controlled to pull the clamped and cut welding ribbon segment to the string assembly station, and the second traction mechanism is controlled to lay the welding ribbon segment to the string assembly station and then move to the transfer station to receive the subsequent welding ribbon from the first traction mechanism.

12. The method for processing the welding strip according to claim 11, wherein: The lifting mechanism is controlled to carry the welding ribbon segment pulled by the second pulling mechanism at the transfer station, and the lifting mechanism and the second pulling mechanism are controlled to move synchronously to transport the welding ribbon segment to the string assembly station.

13. A string welding machine, characterized in that: The stringer includes a transport mechanism, a cell feeding mechanism, a stringing mechanism, and a ribbon processing device according to any one of claims 1 to 10, wherein: The welding ribbon processing device is used to obtain a fixed-length welding ribbon segment and lay the welding ribbon segment to the string assembly station of the transportation mechanism; The cell feeding mechanism is used to lay the cell to the string assembly station of the transport mechanism; The transport mechanism is used to transport the stacked battery cells and welding ribbon segments at the string assembly station to the string connection station; The serial connection mechanism is used to serially connect the stacked battery cells and welding ribbons into a battery string at the serial connection station.

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