Solder strip preparation mechanism and battery stringing device

Abstract

The utility model provides a solder strip preparation mechanism and a battery string device, the solder strip preparation mechanism comprises a traction mechanism, a lifting mechanism and a film strip carrying mechanism, the traction mechanism is configured to pull a solder strip group with a predetermined length to the lifting mechanism along a first horizontal direction; the film strip carrying mechanism is configured to attach the film strip to the preset position of the welding strip set in the second horizontal direction and make the film strip make contact with all the welding strips in the welding strip set, and the second horizontal direction is perpendicular to the first horizontal direction. According to the solder strip preparation mechanism, the film strip can be automatically bonded to the preset position of the solder strip set, and therefore the solder strip set with the film strip is obtained. Therefore, when the battery pieces and the solder strip groups are laid into strings, the film strips can be synchronously laid to the corresponding inter-piece positions, the subsequent film insertion operation is omitted, and the string forming efficiency and the string forming quality of the battery strings are improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell assembly production equipment, and specifically to a welding ribbon preparation mechanism and a cell stringing device method. Background Art

[0002] In order to avoid the soldering ribbon causing local stress on the edge of the battery cell during the lamination of the battery string components, which may lead to hidden cracks in the battery cell, a film strip can be set between two adjacent battery cells during the production of the battery string to buffer the stress of the soldering ribbon on the battery cell.

[0003] The existing method for stringing cells with membrane strips involves first stringing the cells together with the soldering ribbons, then inserting the membrane strips between the cells. Because the cells and soldering ribbons are already connected, inserting the membrane strips requires lifting one of the two adjacent cells to create a gap for insertion. This existing process for stringing cells with membrane strips is not only cumbersome but also prone to damaging the cells. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a welding strip preparation mechanism, which adopts the following technical solutions:

[0005] A welding strip preparation mechanism, comprising a traction mechanism, a lifting mechanism and a film strip conveying mechanism, wherein:

[0006] The traction mechanism is configured to pull the welding ribbon group having a predetermined length onto the lifting mechanism along a first horizontal direction;

[0007] The film strip transport mechanism is configured to attach the film strip to a predetermined position of the welding tape group along a second horizontal direction, and make the film strip contact with each welding tape in the welding tape group, and the second horizontal direction is perpendicular to the first horizontal direction.

[0008] The solder ribbon preparation mechanism provided in this application can automatically attach film strips to predetermined positions of a solder ribbon assembly, thereby obtaining a solder ribbon assembly with film strips. This allows the film strips to be simultaneously laid to corresponding positions between cells when the cells and solder ribbon assembly are laid in a string, eliminating the need for subsequent film insertion operations and improving the efficiency and quality of the cell string assembly.

[0009] In some embodiments, the first side of the film strip is sticky, and when the film strip is attached to a predetermined position of the welding tape group, the first side of the film strip is bonded to each welding tape in the welding tape group; or, the surface of the film strip is non-sticky at room temperature, and the film strip conveying mechanism is configured to heat the film strip during conveyance so that the film strip attached to the welding tape group releases its stickiness and then adheres to the welding tape group; or, the lifting mechanism is configured to heat the film strip attached to the welding tape group so that the film strip releases its stickiness and then adheres to the welding tape group.

[0010] Because the first surface of the film strip is adhesive, the film strip can be directly bonded to the predetermined position of the soldering ribbon assembly without the need for an additional heating element to heat the film strip to release its adhesiveness, thereby reducing the structural complexity and cost of the soldering ribbon preparation mechanism. For film strips that are non-adhesive at room temperature, two heating methods are provided, both of which can heat the film strip, thereby releasing its adhesiveness and bonding it to the predetermined position of the soldering ribbon assembly.

[0011] In some embodiments, a plurality of first adsorption holes are provided on the supporting surface of the supporting mechanism along the second horizontal direction, and the plurality of first adsorption holes are used to adsorb the film strips attached to the welding ribbon group.

[0012] When the film strip is attached to the welding tape group, the lifting mechanism absorbs the film strip downward through the first absorption hole thereon, thereby pressing the film strip downward onto the welding tape group, ensuring that the film strip and the welding tape group are firmly bonded.

[0013] In some embodiments, a plurality of guide grooves are arranged on the lifting surface of the lifting mechanism at intervals along the second horizontal direction. The guide grooves extend along the first horizontal direction, and each guide groove can guide one welding ribbon in the welding ribbon group.

[0014] By arranging guide grooves on the lifting surface of the lifting mechanism, the welding ribbon group is guided, ensuring that each welding ribbon in the welding ribbon group can move in the length direction.

[0015] In some embodiments, the depth of the guide groove is less than the thickness of the welding strip, and the welding strip can protrude upward from the corresponding guide groove.

[0016] By designing the depth of the guide groove to be smaller than the thickness of the soldering strip, the film strip can fully contact the soldering strip protruding from the guide groove after being transported to the lifting surface of the lifting mechanism, ensuring smooth bonding between the two.

[0017] In some embodiments, the solder strip preparation mechanism further includes a clamping mechanism and a cutting mechanism arranged in front of the lifting mechanism, and the cutting mechanism is located between the clamping mechanism and the lifting mechanism, wherein: the traction mechanism is configured to clamp the free end of the solder strip from the cutting mechanism, and to pull the solder strip toward the lifting mechanism along a first horizontal direction; the cutting mechanism is configured to cut the solder strip after the solder strip of a predetermined length passes through the cutting mechanism to obtain a solder strip group with a predetermined length, and the clamping mechanism is configured to clamp the solder strip when the cutting mechanism cuts the solder strip.

[0018] The automatic cutting and forming of the welding ribbon group with a predetermined length is achieved through the cooperation of the pressing mechanism, the cutting mechanism and the traction mechanism.

[0019] In some embodiments, the welding strip preparation mechanism further includes a film strip conveying mechanism, which is used to convey the film strip to the film strip handling mechanism, and a second adsorption hole for adsorbing the film strip is provided on the conveying surface of the film strip conveying mechanism.

[0020] By providing a film strip conveying mechanism, automatic film strip loading and conveying is achieved, allowing the film strip handling mechanism to absorb the film strips nearby, thereby ensuring work rhythm and improving the efficiency of welding ribbon preparation. By providing a second adsorption hole on the conveying surface of the film strip conveying mechanism for adsorbing the film strips, it is possible to prevent the film strips from shifting during the conveying process, which would prevent the film strip handling mechanism from being able to successfully pick up the delivered film strips.

[0021] The present application also provides a battery stringing device, which includes a solder tape preparation mechanism, a battery cell laying mechanism, a serial conveyor line and a serial connection mechanism as described in any one of the above items, wherein: the serial connection conveyor line is configured to convey along a first horizontal direction, and the input end of the serial connection conveyor line is close to the lifting mechanism; the battery cell laying mechanism and the traction mechanism are configured to lay the solder tape group with film strips attached to the battery cells and the lifting mechanism to the input end of the serial connection conveyor line according to a predetermined stringing rule; the serial connection conveyor line is configured to transport the laid battery cells and solder tape group to the serial connection station; the serial connection mechanism is located at the serial connection station, and the serial connection mechanism is configured to connect the solder tape group to the corresponding battery cells by heating or light.

[0022] Through the coordination of the ribbon preparation mechanism, cell laying mechanism, stringing conveyor line, and stringing mechanism, the cell stringing device realizes the automatic stringing of cells, improving the efficiency of cell stringing. The ribbon preparation mechanism realizes the automatic preparation of the ribbon assembly with the film strips attached. Therefore, when the cells and ribbon assembly are laid into a string, the film strips are laid to the corresponding positions between the cells at the same time, eliminating the need for subsequent film insertion.

[0023] In some embodiments, a tail clamp is provided at the input end of the serial conveyor line. When the traction mechanism pulls the welding ribbon group from the lifting mechanism and lays it to the input end of the serial conveyor line, the tail clamp is configured to clamp and guide the welding ribbon group.

[0024] A tail clamp is provided at the input end of the serial conveyor line. When the traction mechanism pulls the solder ribbon group from the lifting mechanism and lays it to the input end of the serial conveyor line, the solder ribbon group is transferred from the lifting mechanism to the tail clamp. The tail clamp cooperates with the traction mechanism to clamp the two ends of the solder ribbon group, thereby straightening the solder ribbon group and then stacking it with the battery cell, ensuring that each solder ribbon in the solder ribbon group is accurately placed at the target position.

[0025] In some embodiments, the lifting mechanism is configured to be movable along a first horizontal direction toward or away from an input end of the serial conveyor line.

[0026] Because the lifting mechanism can move synchronously with the traction mechanism, it can cooperate with the traction mechanism to lay the ribbon assembly onto the stringing conveyor line, preventing the ribbon assembly from shifting. In addition, if the lifting mechanism is used to heat the film strip, the lifting mechanism can heat the film strip during the traction and laying process of the ribbon. This not only ensures the work cycle and improves the stringing efficiency, but also ensures that the film strip has sufficient time to adhere to the ribbon assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the welding strip preparation mechanism in the embodiment of the present application;

[0028] Figure 2 Schematic diagram of the top view of the lifting mechanism in the embodiment of the present application;

[0029] Figure 3 Schematic diagram of the structure of the battery string device in the embodiment of the present application;

[0030] Figure 4 Schematic diagram of two adjacent battery cells connected in series via a welding ribbon assembly in an embodiment of the present application.

[0031] Figures 1 to 4 Included are:

[0032] Welding strip preparation mechanism 10: traction mechanism 1, lifting mechanism 2, first adsorption hole 21, guide groove 22, film strip transport mechanism 3, pressing mechanism 4, cutting mechanism 5, film strip conveying mechanism 6;

[0033] Cell laying mechanism 20, serial conveyor line 30, serial connection mechanism 40, tail clamp 50, cell conveying mechanism 60;

[0034] Solder ribbon assembly 100 , film strip 200 , and battery cell 300 . DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] like Figure 1 As shown, the welding strip preparation mechanism 10 in the embodiment of the present application includes a traction mechanism 1, a lifting mechanism 2 and a film strip conveying mechanism 3, wherein:

[0037] The pulling mechanism 1 is configured to pull the welding ribbon group 100 having a predetermined length along a first horizontal direction (eg, X direction) onto the lifting mechanism 2 .

[0038] The film strip conveying mechanism 3 is configured to attach the film strip 200 to a predetermined position of the welding tape group 100 along a second horizontal direction (such as the Y direction), and make the film strip 200 contact each welding tape in the welding tape group 100, and the second horizontal direction is perpendicular to the first horizontal direction.

[0039] The solder ribbon preparation mechanism provided in the embodiments of the present application can automatically attach film strips to predetermined positions of the solder ribbon assembly, thereby obtaining a solder ribbon assembly with film strips. Thus, when the solar cells and solder ribbon assembly are laid into a string, the film strips can be laid simultaneously to the corresponding positions between the cells, eliminating the subsequent film insertion operation and improving the efficiency and quality of the solar cell string assembly.

[0040] For example, Figure 4 As shown, in a specific application example, the film strip 200 is attached to the middle of the welding tape group 100. After the battery cells 300 and the welding tape group 100 are laid into a string, the front part of the welding tape group 100 is stacked on the previously laid battery cell 300, and the next laid battery cell 300 is stacked on the back half of the welding tape group 100. The front end of the film strip 200 is placed on the upper side of the rear end of the previously laid battery cell 300, and the rear end of the film strip 200 is located on the lower side of the front end of the next laid battery cell 300.

[0041] The traction mechanism 1 can adopt various existing mechanisms that can implement clamping and traction of the welding ribbon group. For example, the traction mechanism 1 includes a moving module, a mounting plate, a clamping drive module and a plurality of clamps, wherein the mounting plate is connected to the driving end of the moving module, the moving module is used to drive the mounting plate to move horizontally and lift, and a plurality of clamps are arranged side by side on the mounting plate. Each clamp is used to clamp and release a welding ribbon in the welding ribbon group, and the clamping drive module is used to drive a plurality of clamps to synchronously perform clamping and releasing actions.

[0042] In some application examples, the first surface of the film strip 200 is adhesive. When the film strip 200 is attached to a predetermined position of the soldering ribbon assembly 100, the first surface of the film strip 200 is bonded to each soldering ribbon in the soldering ribbon assembly 100. Since the first surface of the film strip 200 is adhesive, the film strip 200 can be directly attached to the predetermined position of the soldering ribbon assembly 100 without the need for an additional heating element to heat the film strip 200 to release the adhesiveness of the film strip 200, thereby reducing the cost of the soldering ribbon preparation mechanism.

[0043] In some other application examples, the surface of the film strip 200 is non-sticky at room temperature. In order to release the stickiness of the film strip 200 and then adhere it to the battery cell 300, the following two implementation methods can be used:

[0044] First implementation: The film strip transport mechanism 3 heats the film strip 200 during transport, thereby pre-releasing the film strip 200's stickiness and allowing the film strip 200 attached to the solder ribbon assembly 100 to adhere to the solder ribbon assembly 100. For example, the film strip transport mechanism 3 includes a first drive unit and a suction assembly connected to the drive end of the first drive unit. The first drive unit drives the suction assembly to translate and elevate, thereby causing the suction assembly to absorb the film strip 200 and attach it to the solder ribbon assembly 100. The suction assembly is integrated with a first heating element. After the suction assembly absorbs the film strip 200, the first heating element can heat the film strip 200.

[0045] A second implementation method involves using the lifting mechanism 2 to heat the film strip 200 attached to the solder ribbon assembly 100, releasing its adhesiveness and allowing the film strip 200 to adhere to the solder ribbon assembly 100. For example, the lifting mechanism 2 includes a second drive unit and a lifting plate connected to the driving end of the second drive unit. The second drive unit is configured to at least drive the lifting plate upward and downward, thereby enabling the lifting plate to receive the solder ribbon assembly 100 pulled by the pulling mechanism 1. A second heating element is disposed within the lifting plate. When the film strip 200 is attached to the solder ribbon assembly 100, the lifting surface of the lifting plate heats the film strip 200 via the second heating element. This second heating element can be, for example, a heating rod or heating wire disposed within the lifting plate.

[0046] like Figure 2 As shown, optionally, four groups of first adsorption holes 21 are provided on the lifting surface of the lifting mechanism 2 along the second horizontal direction, and each group of first adsorption holes 21 includes four first adsorption holes 21. When the film strip 200 is attached to the welding ribbon assembly 100 along the second horizontal direction, the film strip 200 is located directly above the four groups of first adsorption holes 21. In this way, the four groups of first adsorption holes 21 can downwardly adsorb the film strip 200 attached to the welding ribbon assembly 100 along the length direction of the film strip 200, thereby pressing the film strip 200 downward onto the welding ribbon assembly 100, ensuring that the film strip 200 and the welding ribbon assembly 200 are firmly bonded.

[0047] Of course, 2 groups, 3 groups, 5 groups or other numbers of first adsorption holes 21 can also be set on the lifting surface of the lifting mechanism 2 along the second horizontal direction, and each group of first adsorption holes 21 can also include 2, 3, 5 or other numbers of first adsorption holes 21.

[0048] like Figure 2As shown, optionally, a plurality of guide grooves 22 are provided at intervals along the second horizontal direction on the lifting surface of the lifting mechanism 2. The guide grooves 22 extend along the first horizontal direction, and each guide groove 22 can guide one of the welding ribbons in the welding ribbon group 100. The number of guide grooves 22 can be equal to the number of welding ribbons in the welding ribbon group 100, or can be greater than the number of welding ribbons in the welding ribbon group 100, as long as it is ensured that each welding ribbon falls into a guide groove 22 after the welding ribbon group 100 is pulled to the lifting surface of the lifting mechanism 2.

[0049] By setting a guide groove 22 on the lifting surface of the lifting mechanism 2, the guidance of the welding tape group 100 is achieved, ensuring that each welding tape in the welding tape group 100 can only move in the length direction (i.e., the first horizontal direction) and cannot move in the second horizontal direction, and finally ensuring that the welding tape group 100 can be laid to the predetermined position.

[0050] Of course, when both the first adsorption holes 21 and the guide grooves 22 are provided on the lifting surface of the lifting mechanism 2 , the first adsorption holes 21 and the guide grooves 22 need to be staggered.

[0051] Optionally, the depth of the guide groove 22 is smaller than the thickness of the soldering strip, so that the soldering strip can protrude upward from the corresponding guide groove, thereby ensuring that the film strip 200 can be smoothly attached to the soldering strip assembly 100 .

[0052] like Figure 1 As shown, optionally, the solder strip preparation mechanism 10 in the embodiment of the present application further includes a clamping mechanism 4 and a cutting mechanism 5 arranged in front of the lifting mechanism 2, and the cutting mechanism 5 is located between the clamping mechanism 4 and the lifting mechanism 2, wherein: the traction mechanism 1 is configured to clamp the free end of the solder strip from the cutting mechanism 5, and to pull the solder strip along a first horizontal direction toward the lifting mechanism 2.

[0053] When the predetermined length of the soldering ribbon passes through the cutting mechanism 5, the pressing mechanism 4 presses the soldering ribbon, and the cutting mechanism 5 then cuts the soldering ribbon, thereby obtaining a soldering ribbon assembly 100 of the predetermined length. The traction mechanism 1 then continues to traction the soldering ribbon assembly 100 to the lifting surface of the lifting mechanism 2.

[0054] It can be seen that, through the cooperation of the pressing mechanism 4 , the cutting mechanism 5 and the traction mechanism 1 , the solder strip preparation mechanism in the embodiment of the present application realizes the automatic cutting and forming of the solder strip group 100 with a predetermined length.

[0055] like Figure 1 As shown, optionally, the welding strip preparation mechanism 10 in the embodiment of the present application further includes a film strip conveying mechanism 6, which is used to convey the film strip 200 to the film strip handling mechanism, and a second adsorption hole for adsorbing the film strip 200 is provided on the conveying surface of the film strip conveying mechanism 6.

[0056] By providing the film strip conveying mechanism 6, automatic loading and conveying of the film strip 200 is achieved, allowing the film strip handling mechanism 3 to absorb the film strip 200 nearby, thereby ensuring the working rhythm and improving the efficiency of welding ribbon preparation. By providing a second adsorption hole for adsorbing the film strip 200 on the conveying surface of the film strip conveying mechanism 6, it is possible to prevent the film strip 200 from shifting during the conveying process, which would cause the film strip handling mechanism 3 to be unable to successfully pick up the delivered film strip 200.

[0057] Based on the same application concept, this application also provides a battery string device. Figure 3 As shown, the battery stringing device in the embodiment of the present application includes the solder ribbon preparation mechanism 10 provided in any of the above embodiments, as well as the battery cell laying mechanism 20, the stringing conveyor line 30 and the stringing mechanism 40, wherein:

[0058] The serial conveyor line 30 is configured to convey along a first horizontal direction, with the input end of the serial conveyor line 30 adjacent to the lifting mechanism 2. The cell placement mechanism 20 and the traction mechanism 1 are configured to place the cell 300 and the solder ribbon assembly 100 with the film strips 200 attached to the lifting mechanism 2 according to a predetermined stringing rule to the input end of the serial conveyor line 30.

[0059] The stringing conveyor line 30 is configured to convey the laid-out cells 300 and the solder ribbon assembly 100 to the stringing station. The stringing mechanism 40 is located at the stringing station and is configured to connect the solder ribbon assembly 100 to the corresponding cells by heating or irradiating the cells.

[0060] It can be seen that through the cooperation of the welding ribbon preparation mechanism 10, the battery cell laying mechanism 20, the stringing conveyor line 30 and the stringing mechanism 40, the battery stringing device in the embodiment of the present application realizes the automatic stringing operation of the battery cells, thereby improving the battery stringing efficiency. The welding ribbon preparation mechanism 10 realizes the automatic preparation of the welding ribbon group with the film strip bonded thereto, so that when the battery cells and the welding ribbon group are laid in a string, the film strip is simultaneously laid to the corresponding position between the cells, eliminating the subsequent film insertion operation and improving the stringing efficiency and stringing quality of the battery strings.

[0061] As shown in FIG3 , a tail clamp 50 is provided at the input end of the serial conveyor line 30 . When the traction mechanism 1 pulls the welding ribbon group 100 from the lifting mechanism 2 and lays it to the input end of the serial conveyor line 30 , the tail clamp 50 is configured to clamp and guide the welding ribbon group 100 .

[0062] Since a tail clamp 50 is provided at the input end of the serial conveyor line 30, when the traction mechanism 1 pulls the solder ribbon group 100 from the lifting mechanism 2 and lays it to the input end of the serial conveyor line 30, the solder ribbon group 100 is transferred from the lifting mechanism 2 to the tail clamp 50. The tail clamp 50 cooperates with the traction mechanism 1 to clamp the two ends of the solder ribbon group 100, thereby straightening the solder ribbon group 100 and then stacking it with the battery cell, ensuring that each solder ribbon in the solder ribbon group 100 is accurately placed at the target position of the battery cell.

[0063] The tail clip 50 can adopt various existing structures of solder ribbon tail clips. For example, the tail clip 50 includes a plurality of clamping jaw assemblies arranged side by side along the second horizontal direction and driven by a unified clamping drive unit. Each clamping jaw assembly can clamp, guide or clamp a solder ribbon in the solder ribbon group 100.

[0064] Optionally, the lifting mechanism 2 is configured to move along a first horizontal direction toward or away from the input end of the serial conveyor line 30. Because the lifting mechanism 2 can move synchronously with the traction mechanism 1, the lifting mechanism 2 can cooperate with the traction mechanism 1 to lay the solder ribbon assembly 100 onto the serial conveyor line 30, preventing the solder ribbon assembly 100 from shifting. In addition, if the lifting mechanism 2 is used to heat the film strip 200, the lifting mechanism 2 can heat the film strip 200 during the solder ribbon traction and laying process. This can not only ensure the work cycle and improve the stringing efficiency, but also ensure that the film strip 200 has sufficient time to adhere to the solder ribbon assembly 100.

[0065] As described in the previous embodiment, the lifting mechanism 2 can be composed of a second driving part and a lifting plate connected to the driving end of the second driving part. The second driving part can drive the lifting plate to rise and fall to drive the lifting plate to receive the welding tape group pulled into place by the traction mechanism 1. The second driving part can also drive the lifting plate to move along the first horizontal direction toward or away from the input end of the serial conveyor line 30, thereby cooperating with the traction mechanism 1 to lay the welding tape group 100 onto the serial conveyor line 30.

[0066] like Figure 3 As shown, optionally, the battery stringing device in the embodiment of the present application further includes a battery cell conveying mechanism 60, which is used to convey the battery cells 300 to the battery cell laying mechanism 20, thereby implementing automatic loading of the battery cells.

[0067] The above description of the present application is sufficiently detailed and has certain particularities. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and that all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the above description in the embodiments. Furthermore, the embodiments mentioned in the present application are not limited to being implemented individually, and some embodiments can also be implemented in combination.

Claims

1. A welding strip preparation mechanism, characterized in that: The welding strip preparation mechanism includes a traction mechanism, a lifting mechanism and a film strip conveying mechanism, wherein: The traction mechanism is configured to pull a welding ribbon group having a predetermined length onto the lifting mechanism along a first horizontal direction; The film strip conveying mechanism is configured to attach the film strip to a predetermined position of the welding tape group along a second horizontal direction, and to make the film strip contact with each welding tape in the welding tape group, and the second horizontal direction is perpendicular to the first horizontal direction.

2. The welding strip preparation mechanism according to claim 1, characterized in that: The first surface of the film strip is sticky, and when the film strip is attached to a predetermined position of the welding tape group, the first surface of the film strip is bonded to each welding tape in the welding tape group; or, The surface of the film strip is non-sticky at room temperature, and the film strip conveying mechanism is configured to heat the film strip during the conveying process so that the film strip attached to the soldering ribbon group releases its stickiness and then adheres to the soldering ribbon group; or, the lifting mechanism is configured to heat the film strip attached to the soldering ribbon group so that the film strip releases its stickiness and then adheres to the soldering ribbon group.

3. The welding strip preparation mechanism according to claim 1, wherein: A plurality of first adsorption holes are provided on the supporting surface of the supporting mechanism along the second horizontal direction, and the plurality of first adsorption holes are used for adsorbing the film strips attached to the welding ribbon group.

4. The welding strip preparation mechanism according to claim 1, wherein: A plurality of guide grooves are arranged on the lifting surface of the lifting mechanism at intervals along the second horizontal direction. The guide grooves extend along the first horizontal direction, and each of the guide grooves can guide one welding ribbon in the welding ribbon group.

5. The welding strip preparation mechanism according to claim 4, characterized in that: The depth of the guide groove is less than the thickness of the welding strip, and the welding strip can protrude upward from the corresponding guide groove.

6. The welding strip preparation mechanism according to claim 1, characterized in that: The welding ribbon preparation mechanism further includes a pressing mechanism and a cutting mechanism provided in front of the lifting mechanism, wherein the cutting mechanism is located between the pressing mechanism and the lifting mechanism, wherein: The traction mechanism is configured to clamp the free end of the soldering ribbon from the cutting mechanism and to pull the soldering ribbon along the first horizontal direction toward the lifting mechanism; The cutting mechanism is configured to cut the soldering ribbon after the soldering ribbon of a predetermined length passes through the cutting mechanism to obtain a soldering ribbon group with a predetermined length, and the pressing mechanism is configured to press the soldering ribbon when the cutting mechanism cuts the soldering ribbon.

7. The welding strip preparation mechanism according to claim 1, wherein: The welding strip preparation mechanism also includes a film strip conveying mechanism, which is used to convey the film strip to the film strip handling mechanism. A second adsorption hole for adsorbing the film strip is provided on the conveying surface of the film strip conveying mechanism.

8. A battery string device, characterized in that: The battery stringing device comprises a solder ribbon preparation mechanism, a battery cell laying mechanism, a stringing conveyor line, and a stringing mechanism according to any one of claims 1 to 7, wherein: The serial conveyor line is configured to convey along the first horizontal direction, and the input end of the serial conveyor line is close to the lifting mechanism; The cell laying mechanism and the traction mechanism are configured to lay the cell and the welding ribbon group with film strips attached to the lifting mechanism to the input end of the serial conveyor line according to a predetermined stringing rule; The stringing conveyor line is configured to convey the laid-out battery cells and welding ribbon groups to the stringing station; The serial connection mechanism is located at the serial connection station, and is configured to connect the soldering ribbon group to the corresponding battery cell by heating or irradiation.

9. The battery string device according to claim 8, characterized in that: The input end of the serial conveyor line is provided with a tail clamp. When the traction mechanism pulls the solder ribbon group from the lifting mechanism and lays it to the input end of the serial conveyor line, the tail clamp is configured to clamp and guide the solder ribbon group.

10. The battery string device according to claim 8, characterized in that: The lifting mechanism is configured to be movable along the first horizontal direction toward or away from an input end of the serial conveying line.

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