Solder strip pressing device and series connection machine

Abstract

The utility model provides a welding strip pressing device and a series connection machine. The welding strip pressing device comprises a frame. The at least two pressing needle rows are arranged on the frame at intervals in the first horizontal direction, each pressing needle row is used for pressing one welding strip onto the battery piece, each pressing needle row comprises a plurality of pressing needles which are arranged at intervals in the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; the pressing needle comprises a needle body, a first pressing foot and a second pressing foot, wherein the first pressing foot and the second pressing foot are oppositely connected to the lower end of the needle body in the second horizontal direction and used for pressing the welding strip. According to the welding strip pressing device, the first pressing foot and the second pressing foot of the pressing needle can avoid the glue points when pressing the welding strip, the glue points are prevented from being pressed by the pressing needle, and finally it is ensured that the welding strip is firmly bonded to a battery piece through the solidified glue points.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell module production, and more particularly to a solder tape pressing device and a stringing machine. Background Art

[0002] In the process of producing battery modules, there is a process of stacking and stringing battery cells and solder tapes to form a battery string. Among them, during the stacking and conveying of battery cells and solder tapes, a solder tape pressing device is required to press and position the solder tape to avoid the offset between the solder tape and the battery cell during the conveying process.

[0003] In the traditional method of string welding of battery modules, it is only necessary to weld the solder tape to the main grid line of the battery cell. However, recently, a new type of battery cell with higher conversion performance and no main grid has been developed in the field. Only fine grids are printed on the battery cell. When the solder tape is welded to the fine grid, it is easy to break away due to the small contact area. Therefore, a method of dispensing and curing glue on the solder tape or the battery cell has been proposed accordingly.

[0004] In this new process of string welding, it is necessary to dispense glue on the solder tape or the battery cell. The pressure pins in the traditional solder tape pressing device are cylindrical solid structures. When the pressure pins press the solder tape, they are likely to press the glue dots on the battery cell or the solder tape, which not only causes the glue dots to be worn and affects the curing effect, but also pollutes the lower pressing surface of the pressure pins and affects the continuous operation. Therefore, the traditional welding and pressing device can no longer meet the requirements of the new process of string welding, and it is urgent to solve. Utility Model Content

[0005] In view of the above technical problems existing in the traditional solder tape pressing device, the present application provides a solder tape pressing device, and its detailed technical solution is as follows:

[0006] A solder tape pressing device includes:

[0007] A frame;

[0008] At least two rows of pressure pins arranged at intervals in the first horizontal direction on the frame, each row of pressure pins is used to press a solder tape onto a battery cell, and each row of pressure pins includes a plurality of pressure pins arranged at intervals in the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction;

[0009] The pressure pin includes a pin body and a first pressing foot and a second pressing foot oppositely connected to the lower end of the pin body in the second horizontal direction, and the first pressing foot and the second pressing foot are used to press the solder tape.

[0010] In the solder tape pressing device provided by the present application, the first pressing foot and the second pressing foot of the pressure pin can avoid the glue dots when pressing the solder tape, prevent the glue dots from being pressed by the pressure pin, and finally ensure that the glue dots of the solder tape after curing are firmly bonded to the battery cell.

[0011] In some embodiments, a first through hole penetrating the needle body in the vertical direction is formed in the needle body. The lower end opening of the first through hole is located between the first pressing foot and the second pressing foot. The first through hole is used to expose the glue dot below the first through hole, and the glue dot is located on the surface of the battery cell or on the solder strip.

[0012] The glue dot located between the first pressing foot and the second pressing foot is exposed from the first through hole, so that light can irradiate the glue dot through the first through hole. After the glue dot is cured, the solder strip is bonded to the battery cell.

[0013] In some embodiments, in the pressing needle row, at least some adjacent pressing needles are provided with second through holes penetrating the frame. Each second through hole is used to expose the glue dot below the second through hole, and the glue dot is located on the surface of the battery cell or on the solder strip.

[0014] The glue dot below the solder strip located between the adjacent pressing needles is exposed from the second through hole, so that light can irradiate the glue dot through the second through hole. After the glue dot is cured, the solder strip is bonded to the battery cell.

[0015] In some embodiments, at least one second through hole is provided between two adjacent pressing needles in the same pressing needle row.

[0016] The solder strip can be evenly bonded to the battery cell through more glue dots, improving the connection effect between the solder strip and the battery cell.

[0017] In some embodiments, mounting holes corresponding to the pressing needles are provided on the frame. The needle body of the pressing needle is movably inserted through the frame through the mounting holes in the up-and-down direction. A retaining ring for preventing the needle body from disengaging downward from the frame is provided at the top end of the needle body passing through the frame. A spring is sleeved on the needle body. The upper end of the spring abuts against the frame, and the lower end of the spring abuts against the protruding portion at the lower end of the needle body.

[0018] By setting the mounting manner of the needle body of the pressing needle on the frame, providing a retaining ring at the top end of the needle body, and providing a spring between the needle body and the frame, the pressing foot of the pressing needle can elastically press against the corresponding solder strip.

[0019] In some embodiments, the needle body is of a cylindrical structure. The first pressing foot and the second pressing foot are both pressing plates arranged along the first horizontal direction, and the pressing plates are vertically pressed on the solder strip. The mounting hole includes a through-hole section with a circular cross-section penetrating up and down and a limiting hole section with a rectangular cross-section. The needle body is inserted through the frame through the through-hole section, and the first pressing foot and the second pressing foot are located in the limiting hole section and extend downward out of the limiting hole section.

[0020] The first presser foot and the second presser foot are set as pressing plates arranged along the first horizontal direction. While ensuring the pressing effect on the welding tape, the shielding of the welding tape can be further reduced. The mounting hole is set as a through-hole section with a circular cross-section and a limiting hole section with a rectangular cross-section that penetrates up and down, so that the first presser foot and the second presser foot are radially limited within the limiting hole section, thereby preventing the pressing needle from rotating.

[0021] In some embodiments, the pressing needles at the head end of each row of pressing needles are all of the first type, and the pressing needles at non-head ends of each row of pressing needles include one or both of the second type of pressing needles and the first type of pressing needles, and the length of the first type of pressing needles is shorter than that of the second type of pressing needles.

[0022] When using the welding tape pressing device to press the welding tape clamped by the chuck of the welding tape traction mechanism, by controlling the height of the welding tape pressing device, it can be ensured that the longer second type of pressing needles in the row of pressing needles first press onto the welding tape, and the shorter first type of pressing needles at the head ends of each row of pressing needles do not contact the head end of the welding tape. Thus, on the one hand, the pressing and positioning of the welding tape are achieved, and on the other hand, the head end of the welding tape in the lifted state is prevented from being pressed and deformed. When the welding tape traction mechanism releases the head end of the welding tape, control the welding tape pressing device to continue to descend, so that the shorter first type of pressing needles at the head ends of each row of pressing needles finally press on the head end of the welding tape, thereby effectively avoiding the occurrence of the welding tape warping phenomenon.

[0023] In some embodiments, the pressing needles at the tail end of each row of pressing needles are all of the first type.

[0024] In this way, during pressing, there is no need to distinguish between the head end and the tail end of the row of pressing needles, and either the head end or the tail end of the row of pressing needles can be placed close to the head end of the welding tape.

[0025] In some embodiments, the pressing needles adjacent to the pressing needles at the head end of each row of pressing needles, and the pressing needles adjacent to the pressing needles at the tail end of each row of pressing needles are all of the second type.

[0026] The present application also provides a stringing machine, which includes a stringing conveying device with a conveyor belt and the welding tape pressing device described in any one of the above. The stringing conveying device is used to convey the battery cells and the welding tape laid on the conveyor belt, and each row of pressing needles of the welding tape pressing device correspondingly presses a welding tape onto the battery cell.

[0027] Using the stringing machine provided by the present application, the welding tape can be glued to the corresponding battery cell, and the glue points can be prevented from being pressed by the pressing needles of the welding tape pressing device, ensuring the connection strength between the welding tape and the battery cell and preventing virtual connection.

[0028] In some embodiments, the stringing machine further includes a heating device disposed above the conveyor belt. There are hot melt adhesive points on the solar cell or the solder tape. The conveyor belt is used to convey the stacked solar cells, solder tapes, and the solder tape pressing device to below the heating device. The heating device is used to heat the hot melt adhesive points to melt them, and after the hot melt adhesive points are cured, the solder tape is bonded to the solar cell; alternatively, the stringing machine further includes a UV lamp box disposed at least on one of the upper and lower sides of the conveyor belt. There are UV adhesive points on the solar cell or the solder tape. The conveyor belt is used to convey the stacked solar cells, solder tapes, and the solder tape pressing device to the UV lamp box. The UV lamp box is used to irradiate the UV adhesive points, so that the solder tape is bonded to the solar cell through the cured UV adhesive points.

[0029] For the case where there are hot melt adhesive points on the solar cell or the solder tape, by providing a heating device, heating of the hot melt adhesive points is achieved, so that when the hot melt adhesive points are heated, melted, and then cured, the solder tape is bonded to the solar cell; for the case where there are UV adhesive points on the solar cell or the solder tape, by providing a UV lamp box, the solder tape is bonded to the solar cell after the UV adhesive points are cured. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic perspective view of the solder tape pressing device in the present application embodiment from a top view angle;

[0031] Figure 2 It is a schematic perspective view of the pressing pin in the present application embodiment;

[0032] Figure 3 It is a schematic perspective view of the solder tape pressing device in the present application embodiment from a bottom view angle;

[0033] Figure 4 is Figure 3 a partial enlarged view of area A in;

[0034] Figure 5 It is a top view of the solder tape pressing device in the present application embodiment;

[0035] Figure 6 is Figure 5 a cross-sectional view taken along line A-A of;

[0036] Figures 1 to 6 It includes:

[0037] Frame 1;

[0038] Pressing pin row 2;

[0039] Pressing pin 3: pin body 31, first pressing foot 32, second pressing foot 33, first through hole 34, protrusion 35, spring 36, retaining ring 37;

[0040] Second through hole 4;

[0041] The first type of pressing needle 3A and the second type of pressing needle 3B;

[0042] The welding ribbon 100. Specific embodiments

[0043] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] As Figures 1 to 4 shown, in the welding ribbon pressing device of the embodiment of the present application, it includes a frame 1 and at least two (such as 24 in the figure) pressing needle rows 2. Each pressing needle row 2 is arranged on the frame 1 at intervals along the first horizontal direction (such as the X-axis direction in the figure).

[0045] Each pressing needle row 2 is used to press a welding ribbon 100 onto the battery cell. Each pressing needle row 2 includes a plurality of (such as 13 in the figure) pressing needles 3 arranged at intervals along the second horizontal direction (such as the Y-axis direction in the figure). The pressing needle 3 includes a needle body 31 and a first pressing foot 32 and a second pressing foot 33 that are oppositely connected to the lower end of the needle body 31 along the second horizontal direction. The first pressing foot 32 and the second pressing foot 33 are used to press the welding ribbon 100.

[0046] When using the welding ribbon 100 pressing device in the embodiment of the present application to press the welding ribbon 100 onto the battery cell, the first pressing foot 32 and the second pressing foot 33 of each pressing needle 3 can avoid the glue dots, so that the glue dots are located between adjacent pressing needles 3 or between the first pressing foot 32 and the second pressing foot 33 of the same pressing needle 3, thereby preventing the glue dots from being pressed by the pressing needles 3, and finally ensuring that the welding ribbon 100 is firmly bonded to the battery cell through the cured glue dots.

[0047] The glue dot rows can be arranged on the battery cell at intervals along the first horizontal direction. Each glue dot row includes a plurality of glue dots arranged at intervals along the second horizontal direction. The welding ribbon 100 corresponds to the glue dot rows one by one and is laid on the glue dot rows. The width dimension of the glue dots is greater than the width dimension of the welding ribbon 100. When the welding ribbon 100 is laid on the glue dots, the glue dots are not completely covered. By curing the glue dots on the battery cell, the welding ribbon 100 can be glued to the battery cell. Of course, the glue dots can also be preset on the welding ribbon 100, that is, a plurality of glue dots are arranged at intervals along the length direction of each welding ribbon 100. After the welding ribbon 100 is laid on the battery cell, by curing the glue dots on the welding ribbon 100, the welding ribbon 100 can be glued to the battery cell.

[0048] As Figure 2 shown, optionally, a first through hole 34 penetrating the needle body 31 in the vertical direction is formed in the needle body 31. The lower end opening of the first through hole 34 is located between the first pressing foot 32 and the second pressing foot 33. The first through hole 34 is used to expose the glue dots below the first through hole 34, and the glue dots are located on the surface of the battery cell or on the welding ribbon 100.

[0049] Since the glue dots located between the first presser foot 32 and the second presser foot 33 are exposed from the first through hole 34, light for curing the glue dots can irradiate the glue dots between the first presser foot 32 and the second presser foot 33 through the first through hole 34. After the glue dots are cured, the solder strip segment at this position is bonded to the battery cell.

[0050] Optionally, in the press needle row 2, at least some adjacent press needles 3 are provided with second through holes 4 penetrating through the frame 1, and each second through hole 4 is used to expose the glue dots located below the second through hole 4. In this way, light for curing the glue dots can irradiate the glue dots below the second through hole 4 (i.e., the glue dots located between adjacent press needles 3) through the second through hole 4. After the glue dots are cured, the solder strip segment at this position is bonded to the battery cell.

[0051] In order to enable the solder strip 100 to be bonded to the battery cell evenly through more glue dots and further improve the connection effect between the solder strip 100 and the battery cell, optionally, at least one second through hole 4 is provided between adjacent two press needles 3 in the same press needle row 2.

[0052] As Figure 2 and Figures 5 to 6 shown, optionally, the frame 1 is provided with mounting holes corresponding to the press needles 3, and the needle body 31 of the press needle 3 is movably inserted through the mounting holes up and down on the frame 1. A retaining ring 37 for preventing the needle body 31 from disengaging downward from the frame 1 is provided at the top of the needle body 31 passing through the frame 1. An annular groove is provided along the outer peripheral surface at the top of the needle body 31, and the retaining ring 37 is sleeved in the annular groove to realize the connection with the needle body 31, which can prevent the retaining ring 37 and the needle body 31 from disengaging. The retaining ring 37 is limited to the upper part of the frame 1, thereby preventing the needle body 31 from disengaging downward from the frame 1. A spring 36 is sleeved on the needle body 31. The upper end of the spring 36 abuts against the frame 1, and the lower end of the spring 36 abuts against the protruding portion 35 at the lower end of the needle body 31. When the first presser foot 32 and the second presser foot 33 of the press needle 3 press on the solder strip 100, the spring 36 is compressed to apply an elastic force to the first presser foot 32 and the second presser foot 33, so that the first presser foot 32 and the second presser foot 33 can elastically press on the solder strip 100. In this way, the pressing effect can be ensured and the battery cell can be prevented from being damaged by pressing.

[0053] As Figures 2 to 4 shown, optionally, the needle body 31 is of a cylindrical structure, and both the first presser foot 32 and the second presser foot 33 are press plates arranged along the first horizontal direction, and the press plates vertically press on the solder strip 100. In this way, while ensuring the pressing effect of the first presser foot 32 and the second presser foot 33 on the solder strip 100, the shielding of the solder strip 100 can be further reduced.

[0054] Optionally, the mounting hole includes a through hole section with a circular cross section and a limiting hole section with a rectangular cross section, wherein the needle body 31 is connected to the frame 1 through the through hole section, and the first presser foot 32 and the second presser foot 22 are located in the limiting hole section and extend downward from the limiting hole section. Since the first presser foot 32 and the second presser foot 33 are both pressure plates arranged along the first horizontal direction and are located in the limiting hole section with a rectangular cross section, the first presser foot 32 and the second presser foot 33 are limited in the limiting hole section, thereby preventing the pressure needle 3 from rotating. The through hole section is formed by splicing a small diameter hole section and a large diameter hole section, the small diameter hole section is located at the upper part of the large diameter hole section, the spring 36 is arranged at the large diameter hole section, and the upper end of the spring 36 abuts against the step surface at the splicing of the small diameter hole section and the large diameter hole section.

[0055] As known to those skilled in the art, when laying the welding tape 100, the head end of the welding tape 100 is pulled by the clamp of the welding tape pulling mechanism, and the tail end is clamped by the tail clamp. When the head end is pulled, the head end is lifted, and its position is higher than the tail end, and the welding tape 100 is tilted upward as a whole. The lengths of all the pressure pins in the row of pressure pins on the existing welding tape pressing device are equal. When the welding tape pressing device is used to press the welding tape 100, since the head end of the welding tape 100 is in a high position and is still clamped by the clamp, when the welding tape pressing device is used to press the welding tape 100 and then the clamp is released, the head end of the welding tape 100 will be deformed by compression and become tilted, affecting subsequent welding.

[0056] In view of this, optional, such as Figures 5 to 6 As shown, in the solder strip pressing device in the embodiment of the present application, the pressure pins at the head end of each pressure pin row 2 are all first-type pressure pins 3A, and the pressure pins at the non-head end of each pressure pin row 2 include the first-type pressure pins 3B and the first-type pressure pins 3A, or both, and the length of the first-type pressure pins 3A is shorter than that of the second-type pressure pins 3B.

[0057] That is to say, the pressing needles at the head end of each pressing needle row 2 are shorter first-type pressing needles 3A, and the non-head end pressing needles of each pressing needle row 2 can all be longer second-type pressing needles 3B, or a combination of the second-type pressing needles 3B and the first-type pressing needles 3A. When the non-head end pressing needles of each pressing needle row 2 are a combination of the second-type pressing needles 3B and the first-type pressing needles 3A, the number configuration and position arrangement of the second-type pressing needles 3B and the first-type pressing needles 3A can be arbitrary.

[0058] When using the solder tape pressing device in the embodiment of the present utility model to press the solder tape 100 clamped by the chuck of the solder tape traction mechanism, by controlling the height of the solder tape pressing device, it can be ensured that the longer second type of pressing needles 3B in each pressing needle row 2 first press onto the solder tape 100, and the shorter first type of pressing needles 3A at the head end of each pressing needle row 2 do not contact the head end of the solder tape 100. Thus, on the one hand, the pressing and positioning of the solder tape 100 are achieved, and on the other hand, the head end of the solder tape 100 in the lifted state is prevented from being pressed and deformed. When the solder tape traction mechanism releases the head end of the solder tape 100, control the solder tape pressing device to continue to descend, so that the shorter first type of pressing needles 3A at the head end of each pressing needle row finally press on the head end of the solder tape 100, thereby effectively avoiding the occurrence of the warping phenomenon.

[0059] Optionally, the pressing needles at the tail end of the pressing needle row 2 can also be set as the shorter first type of pressing needles 3A. With such a setting, during pressing, there is no need to distinguish between the head end and the tail end of the pressing needle row 2, and either the head end or the tail end of the pressing needle row 2 can be placed close to the head end of the solder tape 100.

[0060] Optionally, the pressing needles adjacent to the pressing needles at the head end of each pressing needle row 2, and the pressing needles adjacent to the pressing needles at the tail end of each pressing needle row 2 are all the second type of pressing needles 3B.

[0061] The present application also provides a stringing machine, which includes a stringing conveying device with a conveyor belt and the solder tape pressing device provided in any of the above embodiments. The stringing conveying device is used to convey the battery cells and the solder tape 100 laid on the conveyor belt, and each pressing needle row of the solder tape pressing device presses a solder tape 100 onto the battery cell correspondingly.

[0062] By using the stringing machine provided by the present application, the solder tape 100 can be glued to the corresponding battery cell, and the glue dots can be prevented from being pressed by the pressing needles of the solder tape pressing device, ensuring the connection strength between the solder tape 100 and the battery cell and preventing virtual connection.

[0063] In some application scenarios, hot melt glue dots are provided on the battery cell or the solder tape 100. When the hot melt glue dots are heated and melted, the solder tape 100 is welded to the battery cell. Correspondingly, the stringing machine in the embodiment of the present application further includes a heating device. The heating device is arranged above the conveyor belt. The conveyor belt is used to convey the stacked battery cells, the solder tape 100 and the solder tape pressing device to the lower part of the heating device. The heating device is used to heat the hot melt glue dots to make the hot melt glue dots melt. After the hot melt glue dots are solidified, the solder tape 100 is bonded to the battery cell. The heating device can be, for example, an infrared lamp box.

[0064] In some other application scenarios, UV glue dots are provided on the battery cells or the solder tapes 100, and when the UV glue dots are cured, the solder tapes 100 are welded to the battery cells. Correspondingly, the stringing machine in the embodiments of the present application further includes a UV lamp box, and the UV lamp box is arranged above or below the conveyor belt according to the orientation of the UV glue dots, or arranged above and below the conveyor belt. The conveyor belt is used to convey the stacked battery cells, solder tapes 100 and the solder tape pressing device to the position of the UV lamp box, and the UV lamp box is used to irradiate the UV glue dots so that the solder tapes 100 are bonded to the battery cells through the cured UV glue dots.

[0065] The above description of the present application is detailed enough and has a certain particularity. Those of ordinary skill in the art should understand that the description in the embodiments is only exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the protection scope of the present application. The scope of protection required by the present application is defined by the claims described, rather than by the above description in the embodiments.

Claims

1. A welding strip pressing device, characterized in that: The welding strip pressing device comprises: frame; At least two rows of press pins are arranged on the frame at intervals along a first horizontal direction, each row of press pins is used to press a solder strip onto a battery cell, and each row of press pins includes a plurality of press pins arranged at intervals along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; The pressing needle comprises a needle body and a first pressing foot and a second pressing foot connected relatively to the lower end of the needle body along the second horizontal direction, wherein the first pressing foot and the second pressing foot are used to press the welding strip; A first through hole is formed in the needle body and penetrates the needle body in a vertical direction. The lower end opening of the first through hole is located between the first pressure foot and the second pressure foot. The first through hole is used to expose the glue point under the first through hole, and the glue point is located on the surface of the battery cell or the welding strip.

2. The welding strip pressing device according to claim 1, characterized in that: In the row of press pins, at least some of the adjacent press pins are provided with second through holes penetrating the frame, and each second through hole is used to expose a glue point below the second through hole, and the glue point is located on the surface of the battery cell or the welding strip.

3. The welding strip pressing device according to claim 2, characterized in that: At least one second through hole is provided between two adjacent pressing pins in the same pressing pin row.

4. The welding strip pressing device according to claim 1, characterized in that: The frame is provided with a mounting hole corresponding to the pressing needle, the needle body of the pressing needle is connected to the frame movably up and down through the mounting hole, and a retaining ring is provided at the top of the needle body passing through the frame to prevent the needle body from falling off the frame downward; A spring is sleeved on the needle body, the upper end of the spring abuts against the frame, and the lower end of the spring abuts against the raised portion of the lower end of the needle body.

5. The welding strip pressing device according to claim 4, characterized in that: The needle body is a cylindrical structure, the first presser foot and the second presser foot are both press plates arranged along the first horizontal direction, and the press plates are vertically pressed on the welding strip; The mounting hole includes a through hole section with a circular cross section and a limiting hole section with a rectangular cross section that passes through from top to bottom, wherein the needle body is connected to the frame through the through hole section, and the first presser foot and the second presser foot are located in the limiting hole section and extend downward from the limiting hole section.

6. The welding strip pressing device according to claim 1, characterized in that: The pressure needles at the head end of each pressure needle row are all first-type pressure needles, and the pressure needles at non-head ends of each pressure needle row include second-type pressure needles and the first-type pressure needles or two thereof, and the length of the first-type pressure needles is shorter than that of the second-type pressure needles.

7. The welding strip pressing device according to claim 6, characterized in that: The pressure needles at the tail end of each pressure needle row are all the first type of pressure needles.

8. The welding strip pressing device according to claim 7, characterized in that: The pressing pins in each of the pressing pin rows that are adjacent to the pressing pins at the head end of the pressing pin row and the pressing pins that are adjacent to the pressing pins at the tail end of the pressing pin row are both the second type of pressing pins.

9. A serial connection machine, characterized in that: The stringing machine includes a stringing conveying device having a conveyor belt and a solder tape pressing device according to any one of claims 1 to 8, wherein the stringing conveying device is used to convey the battery cells and solder tapes laid on the conveyor belt, and each row of pressure needles of the solder tape pressing device presses a solder tape onto the battery cell.

10. The serial connection machine according to claim 9, characterized in that: The serial connection machine further includes a heating device, which is arranged above the conveyor belt. A hot melt adhesive spot is arranged on the battery cell or the soldering tape. The conveyor belt is used to transport the stacked battery cells, soldering tape and the soldering tape pressing device to the bottom of the heating device. The heating device is used to heat the hot melt adhesive spot to melt the hot melt adhesive spot. After the hot melt adhesive spot is solidified, the soldering tape is bonded to the battery cell. or, The stringing machine also includes a UV light box, which is arranged at least one of above and below the conveyor belt. UV glue spots are arranged on the battery cells or the soldering strips. The conveyor belt is used to transport the stacked battery cells, soldering strips and the soldering strip pressing device to the UV light box. The UV light box is used to irradiate the UV glue spots so that the soldering strips are bonded to the battery cells through the cured UV glue spots.

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