Solder strip pressing mechanism applied to BC battery piece and series connection machine

Abstract

The utility model discloses a welding strip pressing mechanism applied to a BC battery piece and a series connection machine. The welding strip pressing mechanism comprises a supporting assembly. The guiding assembly and the welding strip pressing assembly are arranged at the two opposite ends of the supporting assembly respectively; the transverse driving assembly is arranged on the supporting assembly; the longitudinal driving assembly is in transmission connection with the transverse driving assembly; the welding strip pressing assembly comprises a supporting seat structure fixedly arranged above the longitudinal driving assembly. The first pressure welding strip structure and the second pressure welding strip structure are respectively arranged on the supporting seat structure. According to the utility model, the first welding strip pressing structure and the second welding strip pressing structure are respectively used for pressing or loosening the odd-numbered groups of flat welding strips and the even-numbered groups of flat welding strips, so that the problem that the conventional welding strip pressing mechanism cannot meet the welding strip pressing operation in the serial connection process of BC battery pieces is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of series connection technology, and more specifically, to a pressure welding strip mechanism and series connection machine for BC battery cells. Background Technology

[0002] In the BC series connection machine, according to the equipment process flow, the welding strips of the BC solar cells are unwound, stretched, and pulled to the welding strip preparation platform for cutting. The cut welding strips are then transported to the BC solar cells by a robotic arm for welding. Since the BC solar cell welding strips are flat welding strips, the positive and negative electrodes of adjacent solar cells (A and B) on the solar cell string are connected. Solar cells A and B are the same size but have opposite polarities.

[0003] Traditional tape bonding mechanisms do not require differentiation based on the positive and negative terminals of the solar cells, allowing the tape to be simultaneously loosened or tightened. However, for BC solar cells, the distance from the ends of adjacent rows of tapes to the BC solar cells differs. Since a single tape traction mechanism is shared, the tape traction mechanism needs to perform tape traction and stretching twice. When one set of tapes is being tractioned, the other set needs to be tightened. Furthermore, tape tightening is also required when the tapes are cut. Existing tape bonding mechanisms cannot meet the tape bonding operation requirements during the series connection process of BC solar cells. Therefore, a tape bonding mechanism and series connection machine for BC solar cells are provided to solve the above problems. Utility Model Content

[0004] One of the objectives of this utility model is to provide a pressure welding strip mechanism and series connection machine for BC battery cells, so as to solve the problem that the existing pressure welding strip mechanism cannot meet the pressure welding strip operation in the series connection process of BC battery cells.

[0005] The present invention relates to a pressure welding strip mechanism and series connection machine for BC battery cells, which can be achieved through the following technical solutions:

[0006] This utility model discloses a pressure welding strip mechanism for BC battery cells, comprising a support assembly; a guide assembly disposed at one end of the support assembly, the guide assembly guiding and limiting the flat welding strip; a pressure welding strip assembly disposed at the other end of the support assembly and opposite to the guide assembly, the pressure welding strip assembly pressing or releasing the flat welding strip; a lateral drive assembly disposed on the support assembly; and a longitudinal drive assembly drivenly connected to the lateral drive assembly, the pressure welding strip assembly being drivenly connected above the longitudinal drive assembly.

[0007] The pressure welding strip assembly includes a support base structure, which is fixedly disposed above the longitudinal drive assembly; a first pressure welding strip structure and a second pressure welding strip structure are respectively disposed on the support base structure, which respectively perform pressing or loosening operations on odd-numbered flat welding strips and even-numbered flat welding strips.

[0008] In one embodiment, the support structure includes a third fixed plate fixedly mounted on the longitudinal drive assembly; a movable seat rotatably mounted on the third fixed plate via a pivot pin; a locking member detachably mounted through the third fixed plate and the movable seat; and a handle fixedly mounted on the movable seat.

[0009] In one embodiment, the pressure welding strip assembly further includes a second guide groove structure and a plurality of limiting members; the second guide groove structure is fixedly disposed on the third fixing plate; the plurality of limiting members are respectively adjustablely disposed on the support base structure.

[0010] In one embodiment, both the first pressure welding strip structure and the second pressure welding strip structure include a telescopic cylinder, which is fixedly disposed above the movable seat; a pressure plate mechanism slidably disposed on the movable seat; and a plurality of pressure rod mechanisms respectively disposed through the pressure plate mechanism.

[0011] In one embodiment, the pressure bar mechanism includes a linear bearing disposed on the pressure plate mechanism; a linear bearing that slides through the linear bearing; and an elastic element disposed between the linear bearing and the pressure bar body.

[0012] In one embodiment, the support assembly includes a first fixed plate, multiple adjusting rods, and a support plate; the multiple adjusting rods are adjustable and vertically arranged parallel to each other on the first fixed plate; and the support plate is fixedly arranged on the multiple adjusting rods and parallel to the first fixed plate.

[0013] In one embodiment, the guide assembly includes a support frame fixedly mounted on the support assembly; a guide wheel structure, a pressure rod, a first guide groove structure, and a pressure plate are sequentially mounted on the support assembly.

[0014] In one embodiment, the guide wheel structure includes a support shaft fixedly mounted on the support frame; a plurality of guide wheels rotatably mounted on the support shaft; and two stops fixedly mounted on the support shaft and respectively mounted at both ends of the plurality of guide wheels.

[0015] In one embodiment, the first guide groove structure includes a fixing block, which is horizontally fixed on the support frame; a plurality of guide posts are uniformly fixed on the fixing block in sequence, and the two adjacent guide posts perform guiding and limiting operations on the flat welding strip.

[0016] This utility model discloses a series connection machine for BC battery cells, including a welding strip feeding device, wherein the welding strip feeding device includes any of the above-mentioned welding strip pressing mechanism;

[0017] It also includes a cell feeding device, a cell coating device, a cell conveying device, a cell handling device, a welding ribbon laying device, a cell welding ribbon conveying device, and a UV curing device;

[0018] The device comprises the following components: a cell loading device for loading BC cells; a cell adhesive application device for applying adhesive to the BC cells fed by the cell loading device; a cell conveying device for conveying the adhesive-coated BC cells; a cell transport device for transporting the adhesive-coated BC cells from the output end of the cell conveying device to the input end of the cell ribbon conveying device; a ribbon loading device for placing ribbon rolls to provide the ribbon required for cell string welding; a ribbon laying device for laying ribbon of a predetermined length onto the adhesive-coated BC cells at the input end of the cell ribbon conveying device; and a UV curing device positioned above the cell ribbon conveying device, which conveys the adhesive-coated BC cells with ribbon laid on them to the area below the UV curing device for curing.

[0019] Compared with the prior art, the beneficial effects of the present invention, a pressure welding strip mechanism and series connection machine for BC battery cells, are as follows:

[0020] This invention relates to a welding strip pressing mechanism and series connection machine for BC battery cells. Through a first welding strip pressing structure and a second welding strip pressing structure, odd-numbered and even-numbered welding strips are pressed or released respectively. This achieves selective pressing and releasing of the two sets of welding strips while maintaining a compact structure and avoiding redundancy, effectively solving the problem that existing welding strip pressing mechanisms cannot meet the welding strip pressing operation in the BC battery cell series connection process. Multiple elastic pressing rods are used to press the welding strips without damaging the strips themselves. After passing through two sets of guiding mechanisms, the spacing between the welding strips is adjusted to be equal to the distance between the welding strips and the battery cell grid lines. A longitudinal drive component accurately places the welding strips at the cutting edge for cutting, and after cutting, the strip ends are lifted to facilitate gripping by the traction claws. Simultaneously, a transverse drive component allows for lateral displacement, thereby achieving the two different sets of welding strips required for manufacturing AB battery strings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model 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.

[0022] Figure 1 This is a three-dimensional structural diagram of a pressure welding strip mechanism for BC battery cells according to the present invention, including a guide assembly, a longitudinal drive assembly and a pressure welding strip assembly;

[0023] Figure 2 yes Figure 1 The schematic diagram of the three-dimensional structure of the guide assembly shown includes a guide wheel structure and a guide groove structure;

[0024] Figure 3 yes Figure 2 A partial exploded view of the guide wheel structure shown.

[0025] Figure 4 yes Figure 2 A three-dimensional structural diagram of the guide groove structure shown;

[0026] Figure 5 yes Figure 1 The diagram shows the connection structure between the longitudinal drive assembly and the pressure welding strip assembly.

[0027] Figure 6 yes Figure 5 The schematic diagram of the three-dimensional structure of the pressure-welded strip assembly shown includes the pressure bar structure;

[0028] Figure 7 yes Figure 6 The diagram shows a three-dimensional structural schematic of the compression bar structure.

[0029] The diagram indicates the following: 100, pressure welding strip mechanism; 10, support assembly; 11, first fixed plate; 12, adjusting rod; 13, support plate; 20, guide assembly; 21, support frame; 22, guide wheel structure; 221, support shaft; 222, guide wheel; 2221, bearing; 2222, guide wheel body; 223, stop block; 23, pressure rod; 24, first guide groove structure; 241, fixed block; 242, guide column; 25, pressure plate; 251, welding strip hole; 30, transverse drive assembly; 40, longitudinal drive assembly; 41, second fixed plate; 42, longitudinal... 43, Drive structure; 50, Sliding seat structure; 51, Welded strip assembly; 51, Support seat structure; 511, Third fixed plate; 512, Movable seat; 5121, Slide rail; 513, Rotary pin; 514, Locking element; 515, Handle; 52, Second guide groove structure; 53, First welded strip structure; 531, Telescopic cylinder; 532, Pressure plate mechanism; 5321, Through hole; 533, Pressure rod mechanism; 5331, Linear bearing; 5332, Pressure rod body; 5333, Elastic element; 54, Second welded strip structure; 55, Limiting element; 60, Flat welded strip. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present 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 present invention without inventive effort are within the scope of protection of the present invention.

[0032] Please see Figure 1As shown, the present invention discloses a welding strip mechanism 100 for BC battery cells, which is mainly used in the welding strip preparation process in a series welding machine. It includes a support component 10, a guide component 20, a transverse drive component 30, a longitudinal drive component 40, and a welding strip assembly 50. The support component 10 serves as the main support. The guide component 20 and the welding strip assembly 50 are respectively arranged opposite to each other on both sides of the support component 10. The flat welding strip 60 passes through the guide component 20, the support component 10, and the welding strip assembly 50 in sequence. The guide component 20 guides and limits the flat welding strip 60, and the welding strip assembly 50 presses or releases the flat welding strip 60. The transverse drive component 30 is arranged on the support component 10. The longitudinal drive component 40 is drivenly connected to the transverse drive component 30, and the welding strip assembly 50 is drivenly connected to the longitudinal drive component 40. The transverse drive component 30 and the longitudinal drive component 40 cooperate to drive the welding strip assembly 50 to move in the XY axis direction, thereby realizing the transverse and longitudinal movement operation of the welding strip assembly 50.

[0033] Please see Figure 1 As shown, in this embodiment, the support assembly 10 includes a first fixed plate 11, multiple adjusting rods 12, and a support plate 13; the multiple adjusting rods 12 are adjustable and vertically arranged on the first fixed plate 11, and their height can be adjusted relative to the first fixed plate 11; the support plate 13 is fixedly arranged on the multiple adjusting rods 12 and is arranged relatively parallel to the first fixed plate 11, and it supports the flat welding strip 60 arranged thereon.

[0034] Please see Figures 1-4 As shown, in this embodiment, the guide assembly 20 includes a support frame 21, a guide wheel structure 22, a pressure rod 23, a first guide groove structure 24, and a pressure plate 25. The support frame 21 is fixedly mounted on the support assembly 10. The guide wheel structure 22, pressure rod 23, first guide groove structure 24, and pressure plate 25 are sequentially mounted on the support frame 21. The flat welding strip 60 is horizontally mounted on the support plate 13 via the guide wheel structure 22, pressure rod 23, first guide groove structure 24, and pressure plate 25. Specifically, the pressure rod 23 is detachably and rotatably mounted on the support frame 21. The pressure plate 25 is fixedly mounted on the support frame 21, and multiple welding strip holes 251 are provided through it on the side opposite to the support frame 21. Multiple flat welding strips 60 are horizontally mounted on the support plate 13 via the corresponding welding strip holes 251.

[0035] Please see Figure 2 and Figure 3As shown, in this embodiment, the guide wheel structure 22 includes a support shaft 221, multiple guide wheels 222, and two stops 223. The support shaft 221 is fixedly mounted on the support frame 21. The multiple guide wheels 222 are rotatably mounted on the support shaft 221 in sequence, and multiple flat welding strips 60 are guided by their respective guide wheels 222. The two stops 223 are fixedly mounted on the support shaft 221 and are respectively located at both ends of the multiple guide wheels 222, and the two stops cooperate to limit the movement of the multiple guide wheels 222. Specifically, the guide wheel 222 includes a bearing 2221 and a guide wheel body 2222. The bearing 2221 is fixedly mounted in the guide wheel body 2222 and rotatably mounted on the support shaft 221. The guide wheel body 2222 can rotate relative to the support shaft 221 through the action of the bearing 2221.

[0036] Please see Figure 2 and Figure 4 As shown, in this embodiment, the first guide groove structure 24 includes a fixing block 241 and a plurality of guide posts 242; the fixing block 241 is horizontally fixed on the support frame 21; the plurality of guide posts 242 are uniformly fixed on the fixing block 241 in sequence; the two adjacent guide posts 242 can perform guiding and limiting operations on the flat welding strip 60.

[0037] Please see Figure 1 and Figure 5 As shown, in this embodiment, the longitudinal drive assembly 40 includes a second fixed plate 42, a longitudinal drive structure 42, and a sliding seat structure 43. The second fixed plate 41 is connected to the transverse drive assembly 30, and the transverse drive assembly 30 drives the second fixed plate 41 to move in the X-axis direction. The longitudinal drive structure 42 is longitudinally disposed on the second fixed plate 41 and serves as the power source. The sliding seat structure 43 is vertically slidably disposed on the second fixed plate 42 and is connected to the longitudinal drive structure 42, and the longitudinal drive structure 42 drives the sliding seat structure 43 to perform vertical linear motion. Specifically, the longitudinal drive structure 42 includes a servo motor, a reduction mechanism, and a lead screw. The servo motor is fixedly disposed on the second fixed plate 42. The reduction mechanism and the lead screw are sequentially connected to the servo motor, and one end of the lead screw is fixedly connected to the sliding seat structure 43. The servo motor sequentially drives the sliding seat structure 43 to perform vertical linear motion in the longitudinal direction through the reduction mechanism and the lead screw. In this embodiment, the structure of the transverse drive assembly 30 is similar to that of the longitudinal drive assembly 40, so its specific structure will not be described in detail here.

[0038] Please see Figure 1 , Figure 5 and Figure 6As shown, in this embodiment, the pressure welding strip assembly 50 includes a support base structure 51, a second guide groove structure 52, a first pressure welding strip structure 53, a second pressure welding strip structure 54, and multiple limiting members 55. The support base structure 51 is fixedly mounted on the longitudinal drive assembly 40. The second guide groove structure 52 is fixedly mounted on the support base structure 51 and is arranged parallel to the first guide groove structure 24. The first pressure welding strip structure 53 and the second pressure welding strip structure 54 are respectively mounted on the support base structure 51, and both of them perform pressing operations on odd-numbered flat welding strips and even-numbered flat welding strips, respectively. The multiple limiting members 55 are adjustablely mounted on the support base structure 51, and they respectively perform limiting operations on the first pressure welding strip structure 53 and the second pressure welding strip structure 54. Specifically, the structure of the second guide groove structure 52 is similar to the structure of the first guide groove structure 24, so its specific structure will not be described in detail here.

[0039] Please see Figure 5 and Figure 6 As shown, in this embodiment, the support structure 51 includes a third fixed plate 511, a movable seat 512, a pivot pin 513, a locking member 514, and a handle 515. The third fixed plate 511 is fixedly mounted on the sliding seat structure 43. The movable seat 512 is rotatably mounted on the third fixed plate 511 via the pivot pin 513. The locking member 514 is detachably mounted through the third fixed plate 511 and the movable seat 512, fixing the movable seat 512 onto the third fixed plate 511. The handle 515 is fixedly mounted on the movable seat 512, facilitating the removal and rotation of the movable seat 512. Specifically, slide rails 5121 are respectively provided on opposite sides of the movable seat 512, and the first pressure-welded strip structure 53 and the second pressure-welded strip structure 54 are slidably mounted on the corresponding slide rails 5121.

[0040] Please see Figure 5 and Figure 6 As shown, in this embodiment, the first pressure welding strip structure 53 includes a telescopic cylinder 531, a pressure plate mechanism 532, and multiple pressure rod mechanisms 533. The telescopic cylinder 531 is fixedly disposed above the movable seat 512. The two ends of the pressure plate mechanism 532 are respectively slidably disposed on corresponding slide rails 5121, and the telescopic cylinder 531 drives the pressure plate mechanism 532 to perform vertical linear motion. Multiple pressure rod mechanisms 533 are respectively disposed through the pressure plate mechanism 532, and can elastically press onto the corresponding flat welding strip 60. Specifically, multiple through holes 5321 are respectively disposed through the pressure plate mechanism 532, and multiple pressure rod mechanisms 533 are respectively disposed through the corresponding through holes 5321 on the pressure plate mechanism 532.

[0041] Please see Figures 5-7As shown, in this embodiment, the pressure rod mechanism 533 includes a linear bearing 5331, a pressure rod body 5332, and an elastic element 5333. The linear bearing 5331 is disposed in a corresponding through hole 5321. The pressure rod body 5332 is slidably disposed through the linear bearing 5331, and the linear bearing 5331 performs a limiting and guiding operation on the longitudinal movement of the pressure rod body 5332. The elastic element 5333 is disposed between the linear bearing 5331 and the pressure rod body 5332, and provides a buffering force to the pressure rod body 5332. Specifically, the elastic element 5333 is a spring.

[0042] Please see Figure 5 and Figure 6 As shown, in this embodiment, the structure of the second pressure welding strip structure 54 is similar to that of the first pressure welding strip structure 53, so its specific structure will not be described in detail here.

[0043] The present invention provides a series connection machine for BC battery cells, which includes a welding strip feeding device, and the welding strip feeding device includes the welding strip pressing mechanism 100 mentioned above.

[0044] It also includes a cell feeding device, a cell coating device, a cell conveying device, a cell handling device, a welding ribbon laying device, a cell welding ribbon conveying device, and a UV curing device;

[0045] The system includes: a cell feeding device for feeding BC cells; a cell coating device for coating the BC cells fed by the cell feeding device; a cell conveying device for conveying the coated BC cells; a cell handling device for transporting the coated BC cells from the output end of the cell conveying device to the input end of the cell welding ribbon conveying device; a welding ribbon feeding device for placing welding ribbon rolls to provide the welding ribbon required for cell string welding; a welding ribbon laying device for laying welding ribbon of a predetermined length onto the coated BC cells at the input end of the cell welding ribbon conveying device; and a UV curing device located above the cell welding ribbon conveying device, which transports the coated BC cells with welding ribbon to the bottom of the UV curing device for curing.

[0046] It should be noted that the specific working process of the welding strip mechanism and series connection machine applied to BC battery cells of this utility model is as follows: multiple flat welding strips 60 are sequentially arranged below the first welding strip structure 53 and the second welding strip structure 54, passing through the guide wheel structure 22, the pressure rod 23, the first guide groove structure 24, the pressure plate 25, and the second guide groove structure 52; when the welding strip traction mechanism needs to pull the odd number of flat welding strips, the first welding strip structure 53 rises, and the second welding strip structure 54 descends to press the even number of flat welding strips, and then the longitudinal drive assembly 40 is driven. The welding strip traction mechanism is used to place the odd-numbered flat welding strips onto the cutter for cutting. When the welding strip traction mechanism needs to pull the even-numbered flat welding strips, the second welding strip pressing structure 54 rises and the first welding strip pressing structure 53 descends to press the odd-numbered flat welding strips. Then, the longitudinal drive component 40, in conjunction with the welding strip traction mechanism, places the even-numbered flat welding strips onto the cutter for cutting. Then, the transverse drive component 30 moves the welding strip pressing component 50 one grid line distance, thereby achieving the purpose of producing different welding strip lengths required for the positive and negative electrodes of the A and B battery strings.

[0047] 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 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.

[0048] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pressure welding strip mechanism for BC solar cells, characterized in that, include: Support components; A guide component is disposed at one end of the support component, the guide component performing a guiding and limiting operation on the flat solder strip; A pressure welding strip assembly is disposed on the other end of the support assembly and opposite to the guide assembly, the pressure welding strip assembly performing a pressing or releasing operation on the flat welding strip; A lateral drive assembly is disposed on the support assembly; A longitudinal drive assembly is driven to the transverse drive assembly, and the pressure-welded strip assembly is driven to the top of the longitudinal drive assembly; The pressure welding strip assembly includes a support structure, which is fixedly disposed above the longitudinal drive assembly; a first pressure welding strip structure and a second pressure welding strip structure are respectively disposed on the support structure, which respectively perform pressing or releasing operations on odd-numbered flat welding strips and even-numbered flat welding strips.

2. The brazing tape mechanism for BC battery plate according to claim 1, wherein, The support structure includes a third fixed plate, which is fixedly mounted on the longitudinal drive assembly; a movable seat rotatably mounted on the third fixed plate via a pivot pin; a locking member detachably mounted through the third fixed plate and the movable seat; and a handle fixedly mounted on the movable seat.

3. The brazing tape mechanism for BC battery plate according to claim 2, wherein, The pressure welding strip assembly also includes a second guide groove structure and multiple limiting members; the second guide groove structure is fixedly mounted on the third fixing plate; the multiple limiting members are respectively adjustablely mounted on the support base structure.

4. The brazing tape mechanism for BC battery pieces according to claim 2, wherein, Both the first and second pressure-welded strip structures include a telescopic cylinder, which is fixedly disposed above the movable seat; a pressure plate mechanism slidably disposed on the movable seat; and multiple pressure rod mechanisms respectively disposed through the pressure plate mechanism.

5. The brazing tape mechanism for BC battery plate application of claim 4, wherein, The pressure bar mechanism includes a linear bearing disposed on the pressure plate mechanism; a pressure bar body slidably disposed through the linear bearing; and an elastic element disposed between the linear bearing and the pressure bar body.

6. The brazing tape mechanism for BC battery plate application of claim 1, wherein, The support assembly includes a first fixed plate, multiple adjusting rods, and a support plate; the multiple adjusting rods are adjustable and vertically arranged parallel to each other on the first fixed plate; the support plate is fixedly arranged on the multiple adjusting rods and is parallel to the first fixed plate.

7. The brazing tape mechanism for BC battery plate application of claim 1, wherein, The guide assembly includes a support frame, which is fixedly mounted on the support assembly; a guide wheel structure, a pressure rod, a first guide groove structure, and a pressure plate are sequentially mounted on the support assembly.

8. The brazing tape mechanism for BC battery cells of claim 7, wherein, The guide wheel structure includes a support shaft, which is fixedly mounted on the support frame; a plurality of guide wheels that are rotatably mounted on the support shaft; and two stops that are fixedly mounted on the support shaft and respectively mounted at both ends of the plurality of guide wheels.

9. The brazing tape mechanism for BC battery cells of claim 7, wherein, The first guide groove structure includes a fixed block, which is horizontally fixed on the support frame; and a plurality of guide posts are uniformly fixed on the fixed block in sequence, with each pair of adjacent guide posts guiding and limiting the flat welding strip.

10. A series machine applied to BC battery sheet, characterized in that, Includes a welding strip feeding device, wherein the welding strip feeding device includes the welding strip pressing mechanism as described in any one of claims 1-9; It also includes a cell feeding device, a cell coating device, a cell conveying device, a cell handling device, a welding ribbon laying device, a cell welding ribbon conveying device, and a UV curing device; The battery piece feeding device feeds the BC battery piece; the battery piece gluing device glues the BC battery piece conveyed by the battery piece feeding device; the battery piece conveying device conveys the glued BC battery piece; the battery piece carrying device carries the glued BC battery piece at the output end of the battery piece conveying device to the input end of the battery piece ribbon conveying device; the ribbon feeding device places a ribbon roll to provide the ribbon required for battery string welding; the ribbon laying device lays a ribbon of a predetermined length on the glued BC battery piece at the input end of the battery piece ribbon conveying device; and the UV curing device is arranged above the battery piece ribbon conveying device, and the battery piece ribbon conveying device conveys the glued BC battery piece with the laid ribbon to below the UV curing device for curing operation.

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