A kind of welding strip straightening cutting mechanism applied to BC battery piece and string welding machine

Abstract

The application discloses a welding strip straightening and cutting mechanism applied to BC battery pieces, which comprises a supporting assembly, a welding strip front pressing assembly and a welding strip rear pressing assembly which are sequentially arranged on the supporting assembly, a welding strip cutting assembly arranged on the supporting assembly and on one side of the welding strip rear pressing assembly, a welding strip stretching driving assembly and a welding strip straightening assembly which are respectively arranged on the supporting assembly, the welding strip stretching driving assembly is fixedly connected with the welding strip rear pressing assembly, the welding strip straightening assembly is fixedly connected with the welding strip front pressing assembly, and the welding strip front pressing assembly and the welding strip rear pressing assembly both comprise two welding strip pressing mechanisms. The application discloses a string welding machine applied to BC battery pieces. Through the four welding strip pressing mechanisms and the cooperation between the corresponding welding strip pressing mechanisms, the application effectively realizes the staggered cutting of two groups of welding strips and the series connection between the BC battery pieces.

Description

Technical Field

[0001] This invention relates to the field of welding strip straightening and cutting mechanism technology, and more particularly to a welding strip straightening and cutting mechanism and a string welding machine for use in BC solar cells. Background Technology

[0002] BC solar cells have no main grid lines on the front; their main grid lines are all located on the back. Figure 6 As shown, the back of the BC cell 101 is provided with A group grid lines and B group grid lines, which are arranged alternately. The A group solder ribbon 102 needs to be soldered onto the A group grid lines, and the B group solder ribbon 102 needs to be soldered onto the B group grid lines. However, in the existing series welding technology, the solder ribbon straightening and cutting mechanism cuts all the solder ribbons together, and the solder ribbons cannot be cut alternately, so it cannot play the role of series welding of BC cells. Therefore, a solder ribbon straightening and cutting mechanism and a series welding machine for BC cells are provided to solve the problem that the solder ribbons cut by the existing solder ribbon straightening and cutting structure cannot meet the requirements of series welding of BC cells. Summary of the Invention

[0003] One of the objectives of this invention is to provide a ribbon straightening and cutting mechanism and a stringing machine for BC solar cells, so as to solve the problem that the ribbon cut by the existing ribbon straightening and cutting structure cannot meet the requirements of stringing BC solar cells.

[0004] The present invention provides a ribbon straightening and cutting mechanism and a string welding machine for BC solar cells, which can be achieved through the following technical solutions:

[0005] This invention discloses a ribbon straightening and cutting mechanism for BC solar cells, comprising a support assembly; a ribbon pre-pressing assembly and a ribbon post-pressing assembly sequentially and movably disposed on the support assembly; a ribbon cutting assembly disposed on the support assembly and located on one side of the ribbon post-pressing assembly; a ribbon extension driving assembly and a ribbon straightening assembly respectively disposed on the support assembly, wherein the ribbon extension driving assembly is fixedly connected to the ribbon post-pressing assembly, and the ribbon straightening assembly is fixedly connected to the ribbon pre-pressing assembly; both the ribbon pre-pressing assembly and the ribbon post-pressing assembly include two ribbon clamping mechanisms, and the two corresponding ribbon clamping mechanisms respectively clamp or loosen the corresponding ribbon.

[0006] In one embodiment, the support assembly includes a support frame and at least one guide rail; at least one guide rail is fixedly disposed on the support frame, and the welding strip pre-pressing assembly and the welding strip post-pressing assembly are respectively movably disposed on at least one guide rail.

[0007] In one embodiment, at least one of the guide rails or the support frame is provided with a scale.

[0008] In one embodiment, both the pre-pressing assembly and the post-pressing assembly further include a first lower support frame, a first upper pressure frame, and a first pin; the first lower support frame is movably mounted on the support assembly; the first upper pressure frame is movably mounted on the first lower support frame and can be flipped relative to the first lower support frame; the first pin passes through the first lower support frame and the first upper pressure frame respectively; and the two welding strip pressing mechanisms are movably mounted on the first upper pressure frame respectively.

[0009] In one embodiment, the first upper pressure frame is movably mounted on the first lower support frame via a first flipping shaft and is capable of flipping relative to the first lower support frame; the first upper pressure frame is also provided with a first flipping handle.

[0010] In one embodiment, the welding strip pressing mechanism includes a pressing cylinder and a welding strip pressing component; the pressing cylinder is disposed through the first upper pressing frame; the welding strip pressing component is movably disposed on the first upper pressing frame and connected to the pressing cylinder.

[0011] In one embodiment, the ribbon cutting assembly includes a second lower support frame fixedly mounted on the support assembly; a second upper pressure frame movably mounted on the second lower support frame and capable of flipping relative to the second lower support frame; a second pin passing through the second lower support frame and the second upper pressure frame respectively; a ribbon cutting drive mechanism and a lower cutter sequentially connected to the second lower support frame; and an upper cutter fixedly mounted on the second upper pressure frame and positioned opposite to the lower cutter.

[0012] In one embodiment, the welding strip extension drive assembly is a telescopic cylinder or an electric push rod.

[0013] In one embodiment, the strip straightening assembly includes a strip straightening drive mechanism and at least one limiting adjustment member; the strip straightening drive mechanism is disposed on the support frame and connected to the strip front pressing assembly; at least one of the limiting adjustment members is movably disposed on the support frame and is capable of contacting and connecting with the strip front pressing assembly.

[0014] A stringing machine for BC solar cells includes the ribbon straightening and cutting mechanism described in any of the above-mentioned claims.

[0015] Compared with the prior art, the beneficial effects of the present invention, a ribbon straightening and cutting mechanism and string welding machine applied to BC battery cells, are as follows:

[0016] This invention discloses a ribbon straightening and cutting mechanism and a stringing machine for BC solar cells. By setting two ribbon clamping mechanisms on both the ribbon pre-pressing assembly and the ribbon post-pressing assembly, the four ribbon clamping mechanisms cooperate to achieve staggered cutting of two sets of ribbons and series connection between BC solar cells, effectively solving the problem that the ribbons cut by existing ribbon straightening and cutting structures cannot meet the requirements for series connection of BC solar cells. At the same time, the ribbon extension drive assembly drives the ribbon post-pressing assembly to move on the support assembly, and then, with the cooperation of the ribbon pre-pressing assembly, the ribbon extension operation is realized. The ribbon straightening assembly drives the ribbon pre-pressing assembly to move on the support assembly, and then, with the cooperation of the ribbon post-pressing assembly, the ribbon straightening operation is realized. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a solder strip straightening and cutting mechanism for BC battery cells according to the present invention, including a support assembly, a solder strip front pressing assembly, a solder strip rear pressing assembly, a solder strip cutting assembly, a solder strip extension driving assembly, and a solder strip straightening assembly;

[0019] Figure 2 yes Figure 1 The diagram shows the structure of the pre-pressing assembly for the solder strip.

[0020] Figure 3 yes Figure 1 The diagram shows the structure of the solder ribbon cutting assembly.

[0021] Figure 4 yes Figure 1 A schematic diagram of the connection structure of the support assembly, the solder strip pressing assembly, and the solder strip extension drive assembly shown.

[0022] Figure 5 Figure 1 A schematic diagram showing the connection structure of the support assembly, the ribbon pre-pressing assembly, and the ribbon straightening assembly;

[0023] Figure 6 This is a schematic diagram showing the arrangement and connection of the BC battery string after welding with the solder strip.

[0024] The diagram indicates: 10, support assembly; 11, support frame; 12, guide rail; 121, scale; 20, front strip pressing assembly; 21, first lower support frame; 22, first upper pressing frame; 221, first flipping shaft; 222, slide rail; 223, first flipping handle; 23, first pin; 24, group A strip pressing mechanism; 241, pressing cylinder; 242, strip pressing component; 25, group B strip pressing mechanism; 30, rear strip pressing assembly; 4 0, Welding strip cutting assembly; 41, Second lower support frame; 42, Second upper pressure frame; 421, Second flipping shaft; 422, Second flipping handle; 43, Second pin; 44, Welding strip cutting drive mechanism; 45, Lower cutter; 46, Upper cutter; 50, Welding strip extension drive assembly; 60, Welding strip straightening assembly; 61, Welding strip straightening drive mechanism; 62, Limit adjustment component; 101, BC battery string; 102, Group A welding strip; 103, Group B welding strip. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] Please see Figure 1As shown, the present invention discloses a ribbon straightening and cutting mechanism for BC battery cells, which mainly includes a support assembly 10, a ribbon pre-pressing assembly 20, a ribbon post-pressing assembly 30, a ribbon cutting assembly 40, a ribbon extension drive assembly 50, and a ribbon straightening assembly 60. The support assembly 10 serves as the main support body. The ribbon pre-pressing assembly 20 and the ribbon post-pressing assembly 30 are sequentially and movably mounted on the support assembly 10, and can respectively clamp or loosen the ribbon. The ribbon cutting assembly 40 is mounted on the support assembly 10 and located on one side of the ribbon post-pressing assembly 30, and performs a cutting operation on the ribbon. The ribbon extension drive assembly 50... The drive assembly 50 and the ribbon straightening assembly 60 are respectively disposed on the support assembly 10 and are fixedly connected to the ribbon rear pressing assembly 30 and the ribbon front pressing assembly 20, respectively. The ribbon extension drive assembly 50 drives the ribbon rear pressing assembly 30 to move on the support assembly 10. Through the cooperation of the ribbon front pressing assembly 20 and the ribbon rear pressing assembly 30, the ribbon extension operation is realized. The ribbon straightening assembly 60 drives the ribbon front pressing assembly 20 to move on the support assembly 10. Through the cooperation of the ribbon front pressing assembly 20 and the ribbon rear pressing assembly 30, the ribbon straightening operation is realized.

[0028] Please see Figure 1 , Figure 4 and Figure 5 As shown, the support assembly 10 includes a support frame 11 and at least one guide rail 12; the support frame 11 is the main support body; at least one guide rail 12 is fixedly mounted on the support frame 11, and the welding strip pre-pressing assembly 20 and the welding strip post-pressing assembly 30 are respectively movably mounted on at least one guide rail 12. In this embodiment, two guide rails 12 are fixedly mounted in parallel on the support frame 11, and the two ends of the welding strip pre-pressing assembly 20 and the welding strip post-pressing assembly 30 are respectively movably mounted on the two guide rails 12; in other embodiments, the number of guide rails 12 can be one, three, or other plurality, and the number is set according to actual needs. Specifically, at least one guide rail 12 or the support frame 11 is provided with a scale 121, which facilitates the user to adjust the welding strip straightening assembly 60.

[0029] Please see Figure 1 and Figure 2As shown, in this embodiment, the welding strip pre-pressing assembly 20 includes a first lower support frame 21, a first upper pressing frame 22, a first pin 23, a group A welding strip pressing mechanism 24, and a group B welding strip pressing mechanism 25. The first lower support frame 21 is movably mounted on the support assembly 10. The first upper pressing frame 22 is movably mounted on the first lower support frame 21 and can be flipped relative to the first lower support frame 21, thereby facilitating the user to install the corresponding welding strips onto the group A welding strip pressing mechanism 24 and the group B welding strip pressing mechanism 25 respectively. The first pin 23 passes through the first lower support frame 21 and the first upper pressing frame 22 respectively, fixing the first upper pressing frame 22 onto the first lower support frame 21. The group A welding strip pressing mechanism 24 and the group B welding strip pressing mechanism 25 are movably mounted sequentially on the first upper pressing frame 22, and both of them respectively perform pressing or loosening operations on the corresponding welding strips.

[0030] Please see Figure 2 As shown, in this embodiment, the first upper pressure frame 22 is movably mounted on the first lower support frame 21 via a first flipping shaft 221 and can be flipped relative to the first lower support frame 21; two pairs of slide rails 222 are symmetrically arranged on the first upper pressure frame 22, and the A group of welding strip pressing mechanisms 24 and the B group of welding strip pressing mechanisms 25 are respectively movably mounted on the corresponding slide rails 222, and the slide rails 222 respectively guide the A group of welding strip pressing mechanisms 24 and the B group of welding strip pressing mechanisms 25; the first upper pressure frame 22 is also provided with a first flipping handle 223, which facilitates the flipping operation of the first upper pressure frame 22 relative to the first lower support frame 21 by picking up the first flipping handle 223.

[0031] Please see Figure 2 As shown, in this embodiment, the A-group welding strip pressing mechanism 24 includes a pressing cylinder 241 and a welding strip pressing component 242. The pressing cylinder 241 is disposed through the first upper pressing frame 22. The welding strip pressing component 242 is movably disposed on the first upper pressing frame 22 and connected to the pressing cylinder 241. The pressing cylinder 241 drives the welding strip pressing component 242 to move longitudinally, thereby realizing the pressing or loosening operation of the corresponding welding strip by the A-group welding strip pressing mechanism 24. In this embodiment, the B-group welding strip pressing mechanism 25 has a similar structure to the A-group welding strip pressing mechanism 24, so its specific structure will not be described in detail here.

[0032] Please see Figure 1 and Figure 4 As shown, in this embodiment, the structure of the post-weld strip pressing assembly 30 is similar to that of the pre-weld strip pressing assembly 20, so its specific structure will not be described in detail here.

[0033] Please see Figure 1 and Figure 3 As shown, in this embodiment, the welding strip cutting assembly 40 includes a second lower support frame 41, a second upper pressure frame 42, a second pin 43, a welding strip cutting drive mechanism 44, a lower cutter 45, and an upper cutter 46; the second lower support frame 41 is fixedly mounted on the support assembly 10; the second upper pressure frame 42 is movably mounted on the second lower support frame 41 and can be flipped relative to the second lower support frame 41, thereby facilitating the user to install the corresponding welding strips between the lower cutter 45 and the upper cutter 46 respectively; the second pin 43 passes through the second lower support frame 41, the lower support frame 42, the upper pressure frame 42, the welding strip cutting drive mechanism 44, the lower cutter 45, and the upper cutter 46 respectively. The second upper pressure frame 42 is fixedly mounted on the second lower support frame 41. The welding strip cutting drive mechanism 44 is mounted on the second lower support frame 41. The lower cutter 45 is movably mounted on the second lower support frame 41 and connected to the welding strip cutting drive mechanism 44, which drives the lower cutter 45 to move longitudinally. The upper cutter 46 is fixedly mounted on the second upper pressure frame 42 and is positioned opposite to the lower cutter 45. Through the cooperation of the upper cutter 46 and the lower cutter 45, the cutting operation of the welding strip is realized. Specifically, the welding strip cutting drive mechanism 44 can be a telescopic cylinder or an electric push rod. In this embodiment, the welding strip cutting drive mechanism 44 is a telescopic cylinder.

[0034] Please see Figure 1 and Figure 4 As shown, in this embodiment, the welding strip extension drive assembly 50 is mounted on the support frame 11 and connected to the welding strip rear pressing assembly 30. It drives the welding strip rear pressing assembly 30 to move on the guide rail 12. Through the cooperation of the welding strip front pressing assembly 20 and the welding strip rear pressing assembly 30, the welding strip extension operation is realized. Specifically, the welding strip extension drive assembly 50 can be a telescopic cylinder or an electric push rod. In this embodiment, the welding strip extension drive assembly 50 is a telescopic cylinder.

[0035] Please see Figure 1 and Figure 5As shown, the welding strip straightening assembly 60 includes a welding strip straightening drive mechanism 61 and at least one limiting adjustment component 62. The welding strip straightening drive mechanism 61 is mounted on the support frame 11 and connected to the welding strip front pressing assembly 20. It drives the welding strip front pressing assembly 20 to move on the guide rail 12. Through the cooperation of the welding strip front pressing assembly 20 and the welding strip rear pressing assembly 30, the straightening operation of the welding strip is realized. At least one of the limiting adjustment components 62 is movably mounted on the support frame 11 and can contact and connect with the welding strip front pressing assembly 20. Its function is to limit the movement distance of the welding strip front pressing assembly 20, thereby realizing the adjustment operation of the welding strip straightening stretch. Specifically, the welding strip straightening drive mechanism 61 can be a telescopic cylinder or an electric push rod. In this embodiment, the welding strip straightening drive mechanism 61 is a telescopic cylinder. The two limiting adjustment members 62 are respectively movably arranged on the support frame 11 and can respectively contact and connect with the welding strip front pressing assembly 20. Preferably, the limiting adjustment members 62 are limiting screws. In other embodiments, the number of limiting adjustment members 62 can be one, three or other multiples, and the specific number is set according to actual needs.

[0036] The present invention provides a stringing machine for BC solar cells, comprising the welding strip straightening and cutting mechanism described in any of the above claims.

[0037] It should be noted that the specific working process of the welding strip straightening and cutting mechanism applied to BC battery cells of the present invention is as follows: the A group welding strips 102 are respectively tightened or loosened by the A group welding strip tightening mechanism 24 on the welding strip front pressing assembly 20 and the welding strip rear pressing assembly 30; the B group welding strips 103 are respectively tightened or loosened by the B group welding strip tightening mechanism 25 on the welding strip front pressing assembly 20 and the welding strip rear pressing assembly 30; when the welding strip clamping mechanism needs to clamp and pull out the A group welding strips 102, the A group welding strip tightening mechanism 24 on the welding strip front pressing assembly 20 and the B group welding strip tightening mechanism 25 on the welding strip rear pressing assembly 30 are in a relaxed state, and the A group welding strip tightening mechanism on the welding strip rear pressing assembly 30 is in a relaxed state. When the B-group welding strip clamping mechanism 25 on the welding strip front pressing assembly 20 is in a clamping state, the welding strip extension driving assembly 50 drives the A-group welding strip clamping mechanism 24 on the welding strip rear pressing assembly 30 to send the welding strip out of the welding strip cutting assembly 40; the welding strip clamping mechanism clamps the A-group welding strip 102, the A-group welding strip clamping mechanism 24 on the welding strip rear pressing assembly 30 is released, the welding strip clamping mechanism pulls the A-group welding strip 102 out to a corresponding length, the A-group welding strip clamping mechanism 24 on the welding strip rear pressing assembly 30 clamps the A-group welding strip 102, and the welding strip cutting assembly 40 cuts the A-group welding strip 102; when the welding strip clamping mechanism needs to clamp and pull out the B-group welding strip 103, the action is similar to that of the A-group welding strip 102. When it is necessary to straighten the A-group welding strip 102, the A-group welding strip clamping mechanism 24 on the welding strip front pressing assembly 20 and the welding strip rear pressing assembly 30 simultaneously clamps the A-group welding strip 102. The welding strip straightening drive mechanism 61 drives the welding strip front pressing assembly 20 to move, thereby straightening the A-group welding strip 102 located between the welding strip front pressing assembly 20 and the welding strip rear pressing assembly 30. When it is necessary to straighten the B-group welding strip 103, the operation is similar to that of the A-group welding strip 102.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A ribbon straightening and cutting mechanism for BC battery cells, characterized in that, The device includes a support assembly; a front strip pressing assembly and a rear strip pressing assembly sequentially and movably disposed on the support assembly; a strip cutting assembly disposed on the support assembly and located on one side of the rear strip pressing assembly; a strip extension driving assembly and a strip straightening assembly respectively disposed on the support assembly, wherein the strip extension driving assembly is fixedly connected to the rear strip pressing assembly, and the strip straightening assembly is fixedly connected to the front strip pressing assembly; both the front strip pressing assembly and the rear strip pressing assembly include a first strip pressing mechanism and a second strip pressing mechanism, wherein the first strip pressing mechanism on the front strip pressing assembly corresponds to the first strip pressing mechanism on the rear strip pressing assembly, and is used to collaboratively press or release one set of strips, and the second strip pressing mechanism on the front strip pressing assembly corresponds to the second strip pressing mechanism on the rear strip pressing assembly, and is used to collaboratively press or release another set of strips; When the ribbon clamping mechanism needs to clamp and pull out one set of ribbons, the first ribbon pressing mechanism on the ribbon front pressing assembly and the second ribbon pressing mechanism on the ribbon rear pressing assembly are in a relaxed state, while the first ribbon pressing mechanism on the ribbon rear pressing assembly and the second ribbon pressing mechanism on the ribbon front pressing assembly are in a pressed state. The ribbon extension drive assembly drives the ribbon rear pressing assembly to send the set of ribbons pressed by the first ribbon pressing mechanism on the ribbon rear pressing assembly out of the ribbon cutting assembly; the ribbon clamping mechanism clamps the set of ribbons, and the ribbon... When the first welding strip clamping mechanism on the rear pressure assembly is released, the welding strip clamping mechanism pulls the group of welding strips out to a corresponding length, and then the first welding strip clamping mechanism on the rear pressure assembly clamps the group of welding strips, the welding strip cutting assembly cuts the group of welding strips; when it is necessary to straighten the group of welding strips, the corresponding first welding strip clamping mechanisms on the front pressure assembly and the rear pressure assembly simultaneously clamp the group of welding strips, and the welding strip straightening assembly drives the front pressure assembly to move, so that the group of welding strips located between the front pressure assembly and the rear pressure assembly are straightened.

2. The welding strip straightening and cutting mechanism for BC battery cells according to claim 1, characterized in that, The support assembly includes a support frame and at least one guide rail; at least one guide rail is fixedly mounted on the support frame, and the welding strip front pressing assembly and the welding strip rear pressing assembly are respectively movably mounted on at least one guide rail.

3. The welding strip straightening and cutting mechanism for BC battery cells according to claim 2, characterized in that, At least one of the guide rails or the support frame is provided with a scale.

4. The ribbon straightening and cutting mechanism for BC battery cells according to claim 1, characterized in that, Both the pre-pressing assembly and the post-pressing assembly of the welding strip further include a first lower support frame, a first upper pressure frame, and a first pin; the first lower support frame is movably mounted on the support assembly; the first upper pressure frame is movably mounted on the first lower support frame and can be flipped relative to the first lower support frame; the first pin passes through the first lower support frame and the first upper pressure frame respectively; the two welding strip pressing mechanisms are movably mounted on the first upper pressure frame respectively.

5. A ribbon straightening and cutting mechanism for BC battery cells according to claim 4, characterized in that, The first upper pressure frame is movably mounted on the first lower support frame via a first flipping shaft and can be flipped relative to the first lower support frame; the first upper pressure frame is also provided with a first flipping handle.

6. A ribbon straightening and cutting mechanism for BC battery cells according to claim 4, characterized in that, The welding strip pressing mechanism includes a pressing cylinder and a welding strip pressing component; the pressing cylinder is disposed through the first upper pressing frame; the welding strip pressing component is movably disposed on the first upper pressing frame and connected to the pressing cylinder.

7. A ribbon straightening and cutting mechanism for BC battery cells according to claim 1, characterized in that, The ribbon cutting assembly includes a second lower support frame fixedly mounted on the support assembly; a second upper pressure frame movably mounted on the second lower support frame and capable of flipping relative to the second lower support frame; second pins passing through the second lower support frame and the second upper pressure frame respectively; and a ribbon cutting drive mechanism and a lower cutter sequentially connected to the second lower support frame. An upper cutter is fixedly mounted on the second upper pressure frame and is positioned opposite to the lower cutter.

8. A ribbon straightening and cutting mechanism for BC battery cells according to claim 1, characterized in that, The welding strip extension drive assembly uses a telescopic cylinder or an electric push rod.

9. A ribbon straightening and cutting mechanism for BC battery cells according to claim 2, characterized in that, The strip straightening assembly includes a strip straightening drive mechanism and at least one limiting adjustment component; the strip straightening drive mechanism is disposed on the support frame and connected to the strip front pressing assembly; at least one of the limiting adjustment components is movably disposed on the support frame and can contact and connect with the strip front pressing assembly.

10. A stringing machine for BC solar cells, characterized in that, Includes the welding strip straightening and cutting mechanism according to any one of claims 1-9.

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