Solder strip and film strip carrying device and series welding machine

Abstract

The invention provides a welding strip and film strip carrying device, which is used for carrying n welding strip groups and at least n film strips required by an IBC battery string to a welding conveying line, and comprises a moving mechanism, a first mounting bracket, n + 1 welding strip pressing units and at least n film strip adsorption units, wherein the first mounting bracket is connected to the driving end of the moving mechanism, and the moving mechanism is used for driving the first mounting bracket to move; the n + 1 welding strip pressing units are sequentially arranged on the first mounting support side by side in the first horizontal direction, and every two adjacent pressing units are used for pressing the two ends of one welding strip set; the at least n film belt adsorption units are sequentially arranged on the first mounting support side by side in the first horizontal direction, and each film belt adsorption unit is used for adsorbing one film belt. According to the welding strip and film strip carrying device, the n welding strip sets and the at least n film strips required by one IBC battery string can be carried to the welding conveying line at the same time, so that the production cost of the IBC battery string is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of battery production, and specifically to a welding strip and film strip conveying device and a string welding machine. Background Art

[0002] IBC (Interdigitated Back Contact) cells are full back electrode contact cells, which use a technology in which the positive and negative metal contacts of solar cells are both located on the back of the cell. Since there are no grid lines on the front of the cell, the light-receiving area of ​​the cell is greatly increased, thereby improving the power generation efficiency.

[0003] like Fig.14 As shown, in the IBC battery string, the welding ribbon group 300 is laid on the back of the battery cell 100, and two adjacent battery cells 100 are connected by a welding ribbon group 300. From the front of the battery string, the welding ribbon group exposed at the inter-cell spacing between two adjacent battery cells 100, as well as the welding ribbon groups at the string head and string tail can be seen. For reasons such as component aesthetics, during the battery stringing process, a film tape 200 is generally laid at the inter-cell spacing and at the string head and string tail to cover the welding ribbon group. The film tape 200 is located between the battery cell and the welding ribbon group. After heating, the film tape 200 can be bonded to the back of the battery cell and cover the welding ribbon.

[0004] During the production of IBC battery strings, the soldering ribbon group, film ribbon, and battery cells need to be laid out on the welding conveyor line in sequence. In the prior art, the soldering ribbon group and the film ribbon are each equipped with a conveying mechanism, which brings about the problem of high equipment cost and large internal space occupied by the machine. Moreover, the conveying target positions of the soldering ribbon conveying device and the film ribbon conveying device are both the stringing positions of the welding conveyor line. Therefore, the soldering ribbon conveying device and the film ribbon conveying device need to avoid and wait between each other, thereby reducing the production efficiency of the IBC battery string. Summary of the invention

[0005] In view of the technical defects of the traditional handling device, the present application provides a welding ribbon handling device, and its specific technical solution is as follows:

[0006] A welding tape and film tape conveying device, characterized in that it is used to convey n welding tape groups and at least n film tapes required for a string of IBC batteries to a welding conveyor line, and the welding tape and film tape conveying device comprises a moving mechanism, a first mounting bracket, n+1 welding tape pressing units and at least n film tape adsorption units, wherein:

[0007] The first mounting bracket is connected to the driving end of the moving mechanism, and the moving mechanism is used to drive the first mounting bracket to move;

[0008] n+1 solder strip clamping units are sequentially arranged side by side on the first mounting bracket along the first horizontal direction, and two adjacent clamping units are used to clamp two ends of a solder strip group;

[0009] At least n film tape adsorption units are arranged side by side in sequence on the first mounting bracket along a first horizontal direction, and each film tape adsorption unit is used to adsorb a film tape.

[0010] The solder tape and film tape transport device provided in the present application can transport n solder tape groups and at least n film tapes required for a string of IBC battery strings to the welding conveyor line at the same time, thereby reducing the production cost of the IBC battery string and improving production efficiency.

[0011] In some embodiments, among the n+1 solder strip clamping units, the first solder strip clamping unit located at the head includes at least a first clamping portion, the n+1 solder strip clamping unit located at the tail includes at least a second clamping portion, and the other solder strip clamping units include a first clamping portion and a second clamping portion, wherein:

[0012] The first pressing part of the first solder strip pressing unit is used to press the first end of the first solder strip group; the second pressing part of the n+1th solder strip pressing unit is used to press the second end of the nth solder strip group;

[0013] The second clamping portion of the i-th solder tape clamping unit is used to clamp the second end of the i-1-th solder tape group, and the first clamping portion of the i-th solder tape clamping unit is used to clamp the first end of the i-th solder tape group, wherein i is a natural number from 2 to n;

[0014] Among the at least n film tape adsorption units, the jth film tape adsorption unit is located between the jth welding tape pressing unit and the j+1th welding tape pressing unit, and is used to adsorb the jth film tape, wherein j is a natural number from 1 to n.

[0015] By setting the structure and setting position of n+1 welding tape pressing units and at least n film tape adsorption units, it is ensured that n+1 welding tapes and at least n film tapes are simultaneously transported and laid on the welding conveyor line according to the stringing rules of IBC battery strings.

[0016] In some embodiments, the welding strip clamping unit also includes a mounting seat and a guide rail, wherein: the mounting seat is connected to a first mounting bracket; the guide rail is arranged on the mounting seat along a first horizontal direction; the first clamping part and / or the second clamping part are slidably connected to the guide rail and can slide along the guide rail.

[0017] The first pressing part and / or the second pressing part in each solder strip pressing unit can slide in the first horizontal direction, so that the adjacent solder strip pressing units can press and release the solder strip group from both ends.

[0018] In some embodiments, the solder tape and film tape transport device also includes a clamping unit driving mechanism arranged on the first mounting bracket; the clamping unit driving mechanism is used to drive each first clamping part and each second clamping part to move in the opposite direction along the first horizontal direction, so that the two ends of each solder tape group are respectively inserted into the corresponding first clamping part and the second clamping part, and the solder tape group is tightened after the first clamping part and the second clamping part clamp the solder tape group.

[0019] By setting up a clamping unit driving mechanism, the first clamping parts and the second clamping parts are driven in reverse directions, so that the adjacent clamping units can simultaneously clamp and release n+1 welding ribbon groups, and straighten the welding ribbon groups during transportation.

[0020] In some embodiments, the clamping unit driving mechanism includes a driving part, a first transmission part and a second transmission part, wherein: the driving part is installed on a first mounting bracket; the first transmission part is connected to the first driving end of the driving part, and the first clamping part of each welding ribbon clamping unit is connected to the first transmission part; the second transmission part is connected to the second driving end of the driving part, and the second clamping part of each welding ribbon clamping unit is connected to the second transmission part; the driving part drives the first transmission part and the second transmission part to move in the opposite direction along the first horizontal direction to drive each first clamping part and each second clamping part to move in the opposite direction along the first horizontal direction.

[0021] A clamping unit driving mechanism with a simple structure is provided, which controls the first transmission part and the second transmission part to move in opposite directions through a driving part, thereby driving the first clamping parts of all clamping units and the second clamping parts of all clamping units to translate in opposite directions.

[0022] In some embodiments, the first clamping part and the second clamping part have the same structure, and the first clamping part includes a connecting bracket, a fixed pressing plate, a movable pressing plate and a movable pressing plate driving mechanism, wherein: the connecting bracket is slidably connected to the guide rail; the fixed pressing plate is fixedly connected to the lower end of the connecting bracket, and a plurality of through holes are arranged side by side on the fixed pressing plate along the second horizontal direction, and a bearing tongue plate is arranged below each through hole, wherein the second horizontal direction is perpendicular to the first horizontal direction; the movable pressing plate is located above the fixed pressing plate, and a plurality of elastic pressing rods corresponding to the bearing tongue plates are arranged on the movable pressing plate, and each elastic pressing rod The rod and the corresponding bearing tongue plate constitute a welding strip clamping assembly, and each welding strip clamping assembly is used to clamp a welding strip; the movable pressure plate driving mechanism is installed on the connecting bracket and is connected to the movable pressure plate transmission, and the movable pressure plate driving mechanism is used to drive the movable pressure plate to move up and down relative to the fixed pressure plate; when the movable pressure plate moves upward to a high position, each elastic pressure rod moves away from the corresponding bearing tongue plate, and when the connecting bracket moves along the slide rail toward the corresponding welding strip group, the end of the welding strip enters the corresponding bearing tongue plate; when the movable pressure plate moves downward to a low position, each elastic pressure rod presses the end of the welding strip onto the bearing tongue plate through the through hole.

[0023] By setting the first clamping part and the second clamping part, it is achieved that when the first clamping part and the second clamping part move toward the corresponding welding strip group, the end of each welding strip of the welding strip group can enter the first clamping part or the second clamping part and be clamped from the top and bottom by the first clamping part or the second clamping part. Compared with the traditional method of clamping the welding strip by the left and right clamping jaws, the welding strip clamped by the top and bottom clamping method, especially the flat welding strip, will not flip due to uneven force.

[0024] In some embodiments, the film tape transport device also includes a lifting drive mechanism installed on a first mounting bracket; the film tape adsorption unit is connected to a movable part of the lifting drive mechanism, and the lifting drive mechanism is used to drive the film tape adsorption unit to rise and fall; when the lifting drive mechanism drives the film tape adsorption unit to a low position, the film tape adsorption unit extends downward from the welding tape pressing unit to absorb the film tape to be transported or lay the transported film tape into place on the welding conveyor line; when the lifting drive mechanism drives the film tape adsorption unit to a high position, the film tape adsorption unit retracts upward to above the welding tape pressing unit.

[0025] By setting a lifting drive mechanism, the lifting drive of the film tape adsorption unit is realized, so that: after the film tape adsorption unit completes the adsorption of the film tape, it retracts the adsorbed film tape to the top of the solder tape pressing unit for avoidance. In this way, the solder tape pressing unit can then implement adsorption of the solder tape group, and finally, at least n film tapes carried are located above n+1 solder tape groups.

[0026] In some embodiments, the lifting drive mechanism includes a lifting drive unit and a second mounting bracket, wherein: the lifting drive unit is arranged on the first mounting bracket, the second mounting bracket is connected to the driving end of the lifting drive unit, and the lifting drive unit is used to drive the second mounting bracket to lift and lower; the film tape adsorption unit is adjustably mounted on the second mounting bracket, and the installation position of the film tape adsorption unit on the second mounting bracket can be adjusted along the first horizontal direction.

[0027] By setting the lifting drive mechanism, the installation space for the film tape adsorption unit is increased. In addition, the installation position of the film tape adsorption unit on the second mounting bracket can be adjusted along the first horizontal direction, so that the present application can implement the adsorption and transportation of film tapes with different spacings.

[0028] In some embodiments, the lifting drive unit includes a first lifting motor and a second lifting motor, and the second mounting bracket includes a first mounting rod and a second mounting rod, wherein: the first lifting motor and the second lifting motor are both mounted on the first mounting bracket; the first mounting rod is transmission-connected to the driving end of the first lifting motor and extends along the first horizontal direction, and the second mounting rod is transmission-connected to the driving end of the second lifting motor and extends along the first horizontal direction; the first end of the film tape adsorption unit is slidably connected to the first mounting rod, and the second end of the film tape adsorption unit is slidably connected to the second mounting rod; the first lifting motor and the second lifting motor are configured to synchronously drive the first mounting rod and the second mounting rod to lift and lower, thereby driving each film tape adsorption unit to lift and lower synchronously.

[0029] By setting the lifting drive part and the second mounting bracket, the synchronous lifting drive of each film tape adsorption unit can be realized, and sufficient sliding installation space is provided for the film tape adsorption unit.

[0030] In some embodiments, the film tape transport device also includes a solder tape clamping mechanism, which is connected to the second mounting bracket; when the lifting drive mechanism drives the film tape adsorption unit to a low position, the solder tape clamping mechanism synchronously extends the solder tape clamping unit downward to press the transported solder tape onto the welding conveyor line; when the lifting drive mechanism drives the film tape adsorption unit to a high position, the solder tape clamping mechanism synchronously retracts upward to above the solder tape clamping unit.

[0031] By setting up the solder tape clamping mechanism, the solder tape group that has been transported to the welding conveyor line can be clamped, thereby ensuring that the solder tape group is accurately placed at the target position and preventing the solder tape group from being offset during the placement process. In addition, when the solder tape clamping mechanism retracts to the top of the solder tape clamping unit, the solder tape group can be avoided, so that the solder tape clamping unit can smoothly pick up the solder tape group.

[0032] In some embodiments, the solder tape pressing mechanism includes at least n-1 pressure needle rows alternately arranged with at least n film tape adsorption units. The pressure needle rows are adjustably mounted on a second mounting bracket. The mounting position of the pressure needle row on the second mounting bracket can be adjusted along a first horizontal direction. Each pressure needle row is used to press a solder tape group onto the welding conveyor line.

[0033] By setting n-1 pressure pin rows alternately arranged with at least n film tape adsorption units, it can be ensured that all solder tape groups are pressed onto the welding conveyor line. The pressure pin row is adjustable in position and mounted on the second mounting bracket, so that the pressure pin rows of different lengths and different staggered distances can be pressed, thereby improving the compatibility of the pressure pin row.

[0034] In some embodiments, the first mounting bracket includes a first mounting plate, a second mounting plate and a rotation drive mechanism, wherein: the first mounting plate is connected to the driving end of the moving mechanism; the second mounting plate is rotatably connected to the first mounting plate through a rotating shaft, and the solder tape clamping unit and the film tape adsorption unit are both installed on the second mounting plate; the rotation drive mechanism is arranged on the first mounting plate, and the rotation drive mechanism is used to drive the second mounting plate to rotate relative to the first mounting plate.

[0035] By implementing the structure of the first mounting bracket, the angle adjustment of the welding tape pressing unit and the film tape adsorption unit is achieved, ultimately ensuring that the welding tape group and film strips transported into place can be accurately placed at the target position.

[0036] In some embodiments, the first mounting plate and the second mounting plate are slidably connected via two sets of arc-shaped slide rails, the two sets of arc-shaped slide rails are located on two concentric circles with different radii, the rotating shaft is located at the center of the two concentric circles, and the rotating drive mechanism drives the second mounting plate to rotate along the two sets of arc-shaped slide rails with the rotating shaft as the center; a limit member is provided on the second mounting plate, and the limit member limits the rotation range of the second mounting plate.

[0037] The first mounting plate and the second mounting plate are slidably connected via two sets of arc-shaped slide rails, which can further improve the rotation stability of the second mounting plate. By setting the limiter, the rotation angle of the second mounting plate is limited to prevent the second mounting plate from rotating excessively.

[0038] The present application also provides a stringing machine, which includes a film tape feeding device, a welding tape feeding device, a battery cell feeding device, a battery cell laying device, a welding conveyor line, a stringing device, and any of the welding tapes and film tape conveying devices described above, wherein:

[0039] The film tape feeding device is used to provide film tapes, the solder tape feeding mechanism is used to provide solder tape groups, and the battery cell feeding mechanism is used to provide battery cells, and the battery cells are IBC battery cells;

[0040] The welding tape and film tape conveying device is used to convey at least n film tapes provided by the film tape feeding device and n welding tape groups provided by the welding tape feeding mechanism to the welding conveyor line, wherein each film tape is stacked on top of the corresponding welding tape group;

[0041] The cell laying device is used to lay n-1 cells provided by the cell feeding device with their backs facing downwards onto the n welding tape groups, wherein one cell is stacked between two adjacent film tapes;

[0042] The welding conveyor line conveys the laid film tape, welding tape group and battery cells to the stringing device, which is used to weld the film tape, welding tape group and battery cells into a battery string.

[0043] Through the cooperation of a film tape feeding device, a welding tape feeding device, a battery cell feeding device, a battery cell laying device, a welding conveyor line, a stringing device and a film tape handling device, the stringing machine provided in the present application realizes automatic welding of IBC battery cells into strings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of the welding tape and film tape conveying device in the embodiment of the present application;

[0045] Figure 2 It is a structural schematic diagram of the welding tape and film tape conveying device after the moving mechanism is omitted in the embodiment of the present application;

[0046] Figure 3 This is a schematic diagram of the structure of the welding tape and film tape conveying device after the moving mechanism and the first mounting bracket are omitted in the embodiment of the present application;

[0047] Figure 4 It is a schematic diagram of the assembly structure of the welding strip pressing unit and the first transmission beam and the second transmission beam in the embodiment of the present application;

[0048] Figure 5 This is a schematic diagram of the assembly structure of the first lifting motor and the first mounting rod in the embodiment of the present application;

[0049] Figure 6 It is a bottom view structural schematic diagram of the solder tape pressing unit, the film tape adsorption unit and the solder tape pressing mechanism in the embodiment of the present application;

[0050] Figure 7 This is a schematic diagram of the compression of the welding ribbon group by the welding ribbon compression unit in the embodiment of the present application;

[0051] Figure 8 It is a structural schematic diagram of the welding ribbon pressing unit in an embodiment of the present application at one viewing angle;

[0052] Fig. 9 It is a structural schematic diagram of the welding ribbon pressing unit in the embodiment of the present application from another perspective;

[0053] Fig.10 This is a schematic structural diagram of the first pressing portion in an embodiment of the present application;

[0054] Fig.11 It is a schematic structural diagram of the membrane tape adsorption unit in the embodiment of the present application;

[0055] Fig.12 Schematic diagram of the structure of the needle row in the embodiment of the present application;

[0056] Fig.13 This is a schematic diagram of the structure of the first mounting bracket in an embodiment of the present application;

[0057] Fig.14 It is a schematic diagram of the structure of an IBC battery string;

[0058] Figures 1 to 14 Included:

[0059] Mobile mechanism 1;

[0060] First mounting bracket 2:

[0061] A first mounting plate 21;

[0062] A second mounting plate 22;

[0063] A first arc-shaped slide rail 24;

[0064] A second arc-shaped slide rail 25;

[0065] Welding strip clamping unit 3:

[0066] The first pressing part 31 includes a connecting bracket 311, a fixed pressing plate 312, a movable pressing plate 313, a movable pressing plate driving member 314, a pressure tongue plate 315, and an elastic pressing rod 316;

[0067] A second pressing portion 32;

[0068] Mounting seat 33;

[0069] Guide rail 34;

[0070] Membrane strip adsorption unit 4:

[0071] Adsorption strip 41, adsorption hole 42;

[0072] Pressing unit driving mechanism 5:

[0073] Driving unit 51;

[0074] The first transmission part 52: a first connecting rod 521 and a first transmission beam 522;

[0075] A second transmission part 53; a second connecting rod 531 and a second transmission beam 532;

[0076] Lifting drive mechanism 6:

[0077] Lifting drive unit 61: a first lifting motor 611 and a second lifting motor 612;

[0078] The second mounting bracket 62 includes a first mounting rod 621 and a second mounting rod 622;

[0079] Welding strip clamping mechanism 7:

[0080] Pressing strip 71, pressing needle 72;

[0081] Battery cell 100 , film strip 200 , and welding ribbon group 300 . DETAILED DESCRIPTION

[0082] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0083] During the production of IBC battery strings, the soldering ribbon group, film ribbon, and battery cells need to be laid out on the welding conveyor line in sequence. In the prior art, the soldering ribbon group and the film ribbon are each equipped with a conveying mechanism, which brings about the problem of high equipment cost and large internal space occupied by the machine. Moreover, the conveying target positions of the soldering ribbon conveying device and the film ribbon conveying device are both the stringing positions of the welding conveyor line. Therefore, the soldering ribbon conveying device and the film ribbon conveying device need to avoid and wait between each other, thereby reducing the production efficiency of the IBC battery string.

[0084] To this end, the present application provides a welding tape and film tape conveying device, which can implement simultaneous conveying of welding tape groups and film tapes, thereby improving the production efficiency of IBC battery strings.

[0085] An IBC battery string consists of n-1 IBC battery cells, n solder ribbon groups and at least n film ribbon groups, for example, Fig.14 The IBC battery string shown consists of 11 IBC battery cells, 12 solder ribbon groups and 12 film ribbon groups, that is, n=12.

[0086] The soldering tape and film tape transport device provided in the present application is used to simultaneously transport n soldering tape groups and n film tape groups required for a string of IBC batteries to a welding conveyor line.

[0087] like Figure 1 to Figure 2 As shown, the solder tape and film tape conveying device provided in the present application includes a moving mechanism 1, a first mounting bracket 2, n+1 solder tape pressing units 3 and n film tape adsorption units 4, wherein:

[0088] The first mounting bracket 2 is connected to the driving end of the moving mechanism 1 , and the moving mechanism 1 is used to drive the first mounting bracket 2 to move.

[0089] The n+1 welding strip pressing units 3 are arranged along the first horizontal direction (eg Figure 1 and Figure 2 The two adjacent clamping units 3 are arranged side by side on the first mounting bracket 2 in the X-axis direction shown in the figure, and two adjacent clamping units 3 are used to clamp the two ends of a welding ribbon group.

[0090] N membrane tape adsorption units 4 are arranged side by side in sequence on the first mounting bracket 2 along the first horizontal direction, and each membrane tape adsorption unit 4 is used to adsorb a membrane tape.

[0091] Optionally, two additional film tape adsorption units 4 may be provided to provide one film tape for each of the head and tail welding tapes of the battery string.

[0092] The working process of the welding tape and film tape conveying device provided in this application is as follows:

[0093] First, the moving mechanism 1 drives the mounting bracket 2 to move above at least n film tapes arranged according to the IBC string rule, and makes each film tape adsorption unit 4 align with the corresponding film tape.

[0094] Each membrane tape adsorption unit 4 is controlled to adsorb the corresponding membrane tape respectively.

[0095] Next, the moving mechanism 1 drives the mounting bracket 2 to move above the n soldering ribbon groups pre-arranged according to the IBC string rule, and makes each soldering ribbon pressing unit 3 align with the end of the corresponding soldering ribbon group.

[0096] Each welding ribbon pressing unit 3 is controlled to press the end of the corresponding welding ribbon group.

[0097] Finally, the moving mechanism 1 drives the mounting bracket 2 to move to the target position of the welding conveyor line, and controls the solder tape clamping unit 3 and the film tape adsorption unit 4 to release the solder tape group and the film tape respectively. The solder tape group and the film tape are then laid on the welding conveyor line according to the IBC string rule.

[0098] like Figure 6 As shown, optionally, in the n+1 solder strip pressing units:

[0099] Except for the first solder strip clamping unit 3 at the head and the n+1th solder strip clamping unit 3 at the tail, the other solder strip clamping units 3 include a first clamping portion 31 and a second clamping portion 32. In each solder strip clamping unit 3, the first clamping portion 31 and the second clamping portion 32 are arranged in the same orientation, for example, the first clamping portion 31 is arranged on the left, and the second clamping portion 32 is arranged on the right.

[0100] The first solder strip clamping unit 3 located at the head (such as the left end) includes only the first clamping portion 31 , and the n+1th solder strip clamping unit 3 located at the tail (such as the right end) includes only the second clamping portion 32 .

[0101] in:

[0102] The first pressing portion 31 of the first solder strip pressing unit 3 is used to press the first end of the first solder strip group; the second pressing portion of the n+1th solder strip pressing unit is used to press the second end of the nth solder strip group.

[0103] The second clamping portion of the i-th solder strip clamping unit 3 is used to clamp the second end of the i-1-th solder strip group, and the first clamping portion of the i-th solder strip clamping unit 3 is used to clamp the first end of the i-th solder strip group, where i is a natural number from 2 to n.

[0104] In at least n membrane strip adsorption units 4:

[0105] The j-th film tape adsorption unit 4 is located between the j-th solder tape pressing unit 3 and the j+1-th solder tape pressing unit 3, and is used to adsorb the j-th film tape, where j is a natural number from 1 to n. In other words, a film tape adsorption unit 4 can be set between two adjacent solder tape pressing units 3, and each film tape adsorption unit 4 is used to adsorb one film tape.

[0106] It can be seen that by arranging the structure and setting position of n+1 welding tape pressing units 3 and at least n film tape adsorption units 4 as above, it can be ensured that n+1 welding tapes and at least n film tapes are simultaneously transported and laid on the welding conveyor line according to the stringing rules of the IBC battery string.

[0107] In order to enable those skilled in the art to more clearly understand the structure and working principle of the soldering tape and film tape conveying device provided by the present application, the soldering tape and film tape conveying device provided by the present application is illustratively described below with a more specific embodiment.

[0108] In this embodiment, an IBC battery string contains 3 IBC battery sheets (of course, the number of IBC battery sheets contained in an actual IBC battery string may be much greater than 3), so 4 staggered welding ribbon groups and 4 film ribbons are required to lay the IBC battery string. That is, n=4.

[0109] In order to realize the handling of 4 staggered welding ribbon groups and 4 film ribbons, Figure 7 As shown, the solder tape handling device in this embodiment includes five pressing units 3 and four film tape adsorption units 4. Among them:

[0110] The first clamping unit at the head includes only the first clamping portion 13 , the fifth clamping unit at the tail includes only the second clamping portion 14 , and the second, third and fourth clamping units between the two include both the first clamping portion 13 and the second clamping portion 14 .

[0111] The first end of the first welding ribbon group is pressed by the first pressing part 31 of the first pressing unit, and the second end of the first welding ribbon group is pressed by the second pressing part 32 of the second pressing unit.

[0112] The first end of the second welding ribbon group is pressed by the first pressing portion 31 of the second pressing unit, and the second end of the second welding ribbon group is pressed by the second pressing portion 32 of the third pressing unit.

[0113] The first end of the third welding ribbon group is pressed by the first pressing portion 31 of the third pressing unit, and the second end of the third welding ribbon group is pressed by the second pressing portion 32 of the fourth pressing unit.

[0114] The first end of the fourth welding ribbon group is pressed by the first pressing portion 31 of the fourth pressing unit, and the second end of the fourth welding ribbon group is pressed by the second pressing portion 32 of the fifth pressing unit.

[0115] That is, each welding ribbon group is clamped by the first pressing part 31 and the second pressing part 32 of two adjacent pressing units.

[0116] The four membrane tape adsorption units 4 respectively adsorb one membrane tape.

[0117] As known to those skilled in the art, conventional solder strip handling devices generally use left and right clamps to clamp the solder strip. The clamped solder strip, especially the flat solder strip, is prone to displacement and flipping due to uneven force, which results in the solder strip being unable to accurately cover the grid line of the corresponding battery cell, ultimately affecting the welding quality of the battery string.

[0118] In view of this, the first clamping portion 31 and the second clamping portion 32 of the present application are configured to clamp the ends of the welding strip group in an up-and-down manner, thereby ensuring that the welding strips being clamped and transported, especially flat welding strips, will not flip over due to uneven force.

[0119] In order to enable the first pressing part 31 and the second pressing part 32 to press the ends of the welding ribbon group upward and downward, as shown in FIG. Figures 8 to 10 As shown, optionally, the welding ribbon pressing unit 3 further includes a mounting seat 33 and a guide rail 34, wherein: the mounting seat 33 is connected to the first mounting bracket 2, and the guide rail 34 is arranged on the mounting seat 33 along the first horizontal direction. The first pressing portion 31 and / or the second pressing portion 32 are slidably connected to the guide rail 34 and can slide along the guide rail 34.

[0120] By such arrangement, the first clamping part 13 and the second clamping part 14 clamping each welding ribbon group can realize the reverse movement in the first horizontal direction, so that the two ends of each welding ribbon group can be respectively inserted into the corresponding first clamping part 13 and the second clamping part 14, ensuring that the corresponding first clamping part 13 and the second clamping part 14 can clamp the two ends of the welding ribbon group up and down. In addition, during the transportation process or after the transportation is in place, by controlling the first clamping part 13 and the second clamping part 14 clamping each welding ribbon group to move in opposite directions on both sides, the welding ribbon group can be tightened or released.

[0121] like Figure 3 to Figure 4 As shown, the soldering tape and film tape conveying device in the embodiment of the present application further includes a clamping unit driving mechanism 5 disposed on the first mounting bracket 2. The clamping unit driving mechanism 5 is used to drive each first clamping part 31 and each second clamping part 32 to move in the opposite direction along the first horizontal direction.

[0122] Since both ends of each welding ribbon group are clamped by two adjacent clamping units 3, one end of the welding ribbon group is clamped by the first clamping part 31 of one of the clamping units 3, and the other end of the welding ribbon group is clamped by the second clamping part 32 of the other clamping unit 3. Therefore, for the same welding ribbon group, when the corresponding first clamping part 13 and second clamping part 14 move toward the middle, the welding ribbon group is clamped, and when they move toward both sides and separate, the welding ribbon group is tightened or released.

[0123] like Figure 3 As shown, optionally, the pressing unit driving mechanism 5 includes a driving part 51, a first transmission part 52 and a second transmission part 53, wherein: the driving part 51 is mounted on the first mounting bracket 2. The first transmission part 52 is connected to the first driving end of the driving part 51, and the first pressing part 31 of each welding ribbon pressing unit 3 is connected to the first transmission part 52. The second transmission part 53 is connected to the second driving end of the driving part 51, and the second pressing part 32 of each welding ribbon pressing unit 3 is connected to the second transmission part 53.

[0124] The driving part 51 drives the first transmission part 52 and the second transmission part 53 to move in the opposite direction along the first horizontal direction, so as to drive each first pressing part 31 and each second pressing part 32 to move in the opposite direction along the first horizontal direction.

[0125] Optionally, the driving part 51 includes a conveyor belt, the first transmission part 52 is connected to the upper belt body of the conveyor belt, and the second transmission part 53 is connected to the lower belt body of the conveyor belt. When the conveyor belt is conveying, it drives the first transmission part 52 and the second transmission part 53 to move in opposite directions.

[0126] like Figure 3 and Figure 4 As shown, optionally, the first transmission part 52 includes a first connecting rod 521 and a first transmission beam 522, wherein one end of the first connecting rod 521 is connected to the upper belt body of the conveyor belt via a first clamping block, the first transmission beam 522 is connected to the other end of the first connecting rod 521 and extends along the first horizontal direction, and the first clamping part 31 of each welding strip clamping unit 3 is connected to the first transmission beam 522. When the conveyor belt is conveyed, the first transmission beam 522 is driven to move along the first horizontal direction via the first connecting rod 521, thereby driving the first clamping parts 31 of all welding strip clamping units 3 to move synchronously.

[0127] Similarly, the second transmission part 53 includes a second connecting rod 531 and a second transmission beam 532, wherein one end of the second connecting rod 531 is connected to the lower belt body of the conveyor belt via a second clamping block, the second transmission beam 532 is connected to the other end of the second connecting rod 531 and extends along the first horizontal direction, and the second pressing part 32 of each welding strip pressing unit 3 is connected to the second transmission beam 532. When the conveyor belt is conveyed, the second transmission beam 532 is driven to move along the first horizontal direction via the second connecting rod 531, thereby driving the second pressing parts 32 of all welding strip pressing units 3 to move synchronously. Since the conveying directions of the upper and lower belt bodies of the conveyor belt are opposite, the moving direction of the second pressing part 32 is opposite to the moving direction of the first pressing part 31.

[0128] Optionally, the first pressing portion 31 and the second pressing portion 32 have the same structure. Figures 8 to 9 As shown, taking the first pressing part 31 as an example, it includes a connecting bracket 311, a fixed pressing plate 312, a movable pressing plate 313 and a movable pressing plate driving member 314, wherein:

[0129] The connecting bracket 311 is linked with the movable part of the pressing unit driving mechanism 5 (such as the first transmission beam 522 or the second transmission beam 532 ).

[0130] The fixed pressing plate 312 is fixedly connected to the lower end of the connecting bracket 311. The fixed pressing plate 312 is Figures 8 to 10 A plurality of bearing tongue plates 315 are arranged side by side in the Y-axis direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0131] A support plate is extended upward from each of the two ends of the bearing tongue plate 315, and the two support plates are respectively fixedly connected to the fixed pressing plate 312. That is, the bearing tongue plate 315 is generally in a U-shaped structure.

[0132] The movable pressure plate 313 is located above the fixed pressure plate 312, and a plurality of elastic pressure rods 316 corresponding to the bearing tongue plates 315 are arranged below the movable pressure plate 313. Each elastic pressure rod 316 passes through the fixed pressure plate 312 and is located above the bearing tongue plate 315. The gap between the pressing end of each elastic pressure rod 316 and the corresponding bearing tongue plate 315 is for a welding strip to pass through.

[0133] The movable pressing plate driving member 314 is installed on the connecting bracket 311 and is in driving connection with the movable pressing plate 313 . The movable pressing plate driving member 314 is configured to drive the movable pressing plate 313 to move up and down relative to the fixed pressing plate 312 .

[0134] When the movable pressure plate 313 moves upward to a high position, each elastic pressure rod 316 moves away from the corresponding bearing tongue plate 315. When the first clamping portion 31 moves toward the corresponding welding strip group, the end of each welding strip in the welding strip group enters into the gap between the corresponding bearing tongue plate 315 and the elastic pressure rod 316.

[0135] When the movable pressing plate 313 moves downward to a low position, each elastic pressing rod 316 presses the end of the welding strip tightly against the bearing tongue plate 315 .

[0136] It can be seen that by performing the above-mentioned setting on the first clamping part 31, it is achieved that when the first clamping part 31 moves toward the corresponding welding strip group, one end of each welding strip in the welding strip group can enter into the first clamping part 31, and be clamped up and down by the elastic pressure rod 316 and the bearing tongue plate 315 of the first clamping part 31.

[0137] Since the second clamping part 32 moves in the opposite direction to the first clamping part 31, the other end of each soldering strip in the soldering strip group can synchronously enter the corresponding second clamping part 32 and be clamped up and down by the elastic pressure rod 316 and the bearing tongue plate 315 of the second clamping part 32.

[0138] In addition, if Fig.10 The bearing tongue plate 315 is a U-shaped structure that is closed on the left and right sides, which can prevent the welding strip from deviating from both sides and detaching from the bearing tongue plate 315 during the pressing process, and has good structural strength and will not be deformed due to long-term pressing.

[0139] Compared with the conventional method of clamping the solder strip by the left and right clamping jaws, the first clamping portion 31 and the second clamping portion 32 clamp the solder strip by clamping up and down, and the clamped solder strip, especially the flat solder strip, will not flip over due to uneven force.

[0140] Optional, such as Figure 2 , Figure 3 and Figure 5 As shown, optionally, the solder tape and film tape conveying device in the embodiment of the present application further includes a lifting drive mechanism 6 installed on the first mounting bracket 2. The film tape adsorption unit 4 is connected to the movable part of the lifting drive mechanism 6, and the lifting drive mechanism 6 is used to drive the film tape adsorption unit 4 to rise and fall. When the lifting drive mechanism 6 drives the film tape adsorption unit 4 to a low position, the film tape adsorption unit 4 extends downward from the solder tape pressing unit 3. When the lifting drive mechanism drives the film tape adsorption unit 4 to a high position, the film tape adsorption unit 4 retracts upward to above the solder tape pressing unit.

[0141] When the moving mechanism 1 drives the first mounting bracket 2 to move above at least n film strips arranged in a string according to the IBC rule, the lifting drive mechanism 6 drives each film strip adsorption unit 4 to a low position synchronously, so that each film strip adsorption unit 4 adsorbs the corresponding film strip respectively.

[0142] Next, the lifting drive mechanism 6 drives each film tape adsorption unit 4 to a high position synchronously, and each film tape adsorption unit 4 together with the adsorbed film tape is retracted to the top of the welding tape pressing unit.

[0143] The moving mechanism 1 drives the first mounting bracket 2 to move to the target position of the welding conveyor line, and after the weld tape clamping unit 3 lays the weld tape group on the welding conveyor line (the weld tape has not been released yet), the lifting drive mechanism 6 synchronously drives each film tape adsorption unit 4 to a low position, so that each film tape adsorption unit 4 lays the film tape on the welding conveyor line.

[0144] The lifting drive mechanism 6 includes a lifting drive unit 61 and a second mounting bracket 62, wherein: the lifting drive unit 61 is arranged on the first mounting bracket 2, and the second mounting bracket 62 is connected to the driving end of the lifting drive unit 61, and the lifting drive unit 61 is used to drive the second mounting bracket 62 to lift and lower, thereby driving each membrane tape adsorption unit 4 to lift and lower synchronously.

[0145] Optionally, the film tape adsorption unit 4 is installed on the second mounting bracket 62 in an adjustable position, and the mounting position of the film tape adsorption unit 4 on the second mounting bracket 62 can be adjusted along the first horizontal direction. Before the transportation is implemented, the position of each film tape adsorption unit 4 on the second mounting bracket 62 can be adjusted according to the spacing between the film tapes to be adsorbed, so that it can be ensured that when the moving mechanism 1 drives the mounting bracket 2 to move above at least n film tapes arranged according to the IBC string rule, each film tape adsorption unit 4 can be aligned with the corresponding film tape.

[0146] Continue to refer Figure 2 , Figure 3 and Figure 5 As shown, optionally, the lifting drive unit 61 includes a first lifting motor 611 and a second lifting motor 612, and the second mounting bracket 62 includes a first mounting rod 621 and a second mounting rod 622, wherein: the first lifting motor 611 and the second lifting motor 612 are both mounted on the first mounting bracket 2, and the first mounting rod 621 and the second mounting rod 622 are respectively connected to the driving ends of the first lifting motor 611 and the second lifting motor 612, and both extend along the first horizontal direction. The first end of each film strip adsorption unit 4 is slidably connected to the first mounting rod 621, and the second end of each film strip adsorption unit 4 is slidably connected to the second mounting rod 622. The first lifting motor 611 and the second lifting motor 612 synchronously drive the first mounting rod 621 and the second mounting rod 622 to rise and fall, thereby driving each film strip adsorption unit 4 to rise and fall synchronously.

[0147] like Figure 2 and Figure 6As shown, the soldering tape and film tape conveying device in the embodiment of the present application further includes a soldering tape clamping mechanism 7, which is connected to the second mounting bracket 62. When the lifting drive mechanism 6 drives the film tape adsorption unit 4 to a low position, the soldering tape clamping mechanism 7 synchronously extends downward from the soldering tape clamping unit 3 to clamp the soldering tape group conveyed to the welding conveyor line. When the lifting drive mechanism 6 drives the film tape adsorption unit 4 to a high position, the soldering tape clamping mechanism 7 synchronously retracts upward with the film tape adsorption unit 4 to the top of the soldering tape clamping unit 3.

[0148] It can be seen that by setting the welding tape pressing mechanism 7, the welding tape group that has been transported to the welding conveyor line can be pressed, thereby ensuring that the welding tape group is accurately placed at the target position and preventing the welding tape group from being offset during the placement process. In addition, when the welding tape pressing mechanism 7 retracts to the top of the welding tape pressing unit 3, the welding tape group can be avoided, so that the welding tape pressing unit 3 can smoothly pick up the welding tape group.

[0149] Optionally, the solder strip clamping mechanism 7 includes at least n-1 pressure needle rows alternately arranged with at least n film strip adsorption units 4, and the pressure needle rows are adjustably mounted on the second mounting bracket 62. The mounting position of the pressure needle row on the second mounting bracket 62 can be adjusted along the first horizontal direction, and each pressure needle row is used to press the corresponding solder strip group onto the welding conveyor line.

[0150] In this way, it can be ensured that all the welding ribbon groups are pressed onto the welding conveyor line. The position of the pressing needle row is adjustable and mounted on the second mounting bracket 62. Before the transportation is implemented, the position of each pressing needle row can be adjusted according to the length of the welding ribbon group and the staggered distance of the adjacent welding ribbon groups, so that each pressing needle row can be aligned with the corresponding welding ribbon group.

[0151] Optionally, the welding conveyor line may be configured to have an adsorption function, for example, by providing adsorption holes or the like.

[0152] Still Figure 7 Taking the shown embodiment as an example, this embodiment includes 4 film tape adsorption units 4, and correspondingly, the solder tape pressing mechanism 7 includes 3 pressure needle rows alternately arranged with the film tape adsorption units 4, and each pressure needle row is used to press two adjacent solder tape groups onto the welding conveyor line.

[0153] Optional, such as Fig.12 As shown, the pressure pin row includes a pressure strip 71 and a plurality of pressure pins 72 installed on the pressure strip 71 along the second horizontal direction, and each pressure pin 72 is used to press a welding strip. When the second mounting bracket 62 is composed of a first mounting rod 621 and a second mounting rod 622, the two ends of the pressure strip 71 are respectively adjustably connected to the first mounting rod 621 and the second mounting rod 622.

[0154] like Fig.13As shown, optionally, the first mounting bracket 2 includes a first mounting plate 21, a second mounting plate 22 and a rotation drive mechanism, wherein: the first mounting plate 21 is connected to the driving end of the moving mechanism 1. The second mounting plate 22 is rotationally connected to the first mounting plate 21 through a rotating shaft 26, and the solder tape pressing unit 3 and the film tape adsorption unit 4 are both mounted on the second mounting plate 22. The rotation drive mechanism is arranged on the first mounting plate 21, and the rotation drive mechanism 21 is used to drive the second mounting plate 22 to rotate relative to the first mounting plate 21, so as to implement the angle adjustment of the solder tape pressing unit 3 and the film tape adsorption unit 4, and finally ensure that the solder tape group and the film strip can be accurately placed at the target position.

[0155] Optionally, in order to improve the rotational stability of the second mounting plate 22, the first mounting plate 21 and the second mounting plate 22 are slidably connected via two groups of arc-shaped slide rails (respectively, the first group of arc-shaped slide rails 24 and the second group of arc-shaped slide rails 25), the first group of arc-shaped slide rails 24 and the second group of arc-shaped slide rails 25 are located on two concentric circles with different radii, and the rotating shaft 26 is located at the center of the two concentric circles. The rotation drive mechanism drives the second mounting plate 22 to rotate along the first group of arc-shaped slide rails 24 and the second group of arc-shaped slide rails 25 with the rotating shaft 26 as the center.

[0156] In addition, a limiting member is provided on the second mounting plate 22. When the second mounting plate 22 is rotated into place, the limiting member contacts the first mounting plate 21, thereby limiting the rotation range of the second mounting plate and preventing the second mounting plate 22 from over-rotating.

[0157] The present application also provides a stringing machine, which includes a film tape feeding device, a welding tape feeding device, a battery cell feeding device, a battery cell laying device, a welding conveyor line, a stringing device, and the welding tape and film tape conveying device described in any of the above embodiments, wherein:

[0158] The film strip feeding device is used to provide film strips, the solder strip feeding mechanism is used to provide solder strip groups, and the battery cell feeding mechanism is used to provide battery cells, which are IBC battery cells.

[0159] The soldering tape and film tape transport device is used to transport at least n film tapes provided by the film tape feeding device and n soldering tape groups provided by the soldering tape feeding mechanism to the welding conveyor line, wherein each film tape is stacked on top of the corresponding soldering tape group.

[0160] The cell laying device is used to lay n-1 cells provided by the cell feeding device with their backs facing downwards onto n welding tape groups, wherein one cell is stacked between each of two adjacent film tapes.

[0161] The welding conveyor line transports the laid film tape, welding tape group and battery cells to the stringing device, which is used to weld the battery cells, film tape and welding tape group into a battery string. At this time, the battery string is composed of battery cells, film tape and welding tape group from top to bottom. The film tape is dark in color, which can cover the welding tape, making the battery string more beautiful at least.

[0162] It can be seen that through the cooperation of the film tape feeding device, the welding tape feeding device, the battery cell feeding device, the battery cell laying device, the welding conveyor line, the stringing device and the film tape handling device, the stringing machine provided in the present application realizes the automatic welding of IBC battery cells into strings.

[0163] In the foregoing embodiments, certain restrictions are imposed on the number of welding tape groups, the number of film tapes (the number of film tape adsorption units 4), the number of battery cells, and the number of welding tape pressing units 3. However, in the event of process changes, the number of a certain item can be adaptively increased or decreased. For example, a battery string has n IBC battery cells, the number of film tape adsorption units is n+1, the number of welding tape pressing units 3 is n, and so on. Due to space limitations, these are not listed exhaustively.

[0164] The present application is described in sufficient detail above with certain particularity. Those skilled in the art should understand that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. Moreover, all embodiments can be freely combined without conflict, and due to space limitations, all feasible embodiments may not be exhaustively listed in the specification. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A welding tape and film tape conveying device, characterized in that: Used to transport n welding tape groups and at least n film tapes required for a string of IBC battery strings to the welding conveyor line, the welding tape and film tape transporting device includes a moving mechanism, a first mounting bracket, n+1 welding tape pressing units and at least n film tape adsorption units, wherein: The first mounting bracket is connected to the driving end of the moving mechanism, and the moving mechanism is used to drive the first mounting bracket to move; n+1 welding ribbon pressing units are sequentially arranged side by side on the first mounting bracket along the first horizontal direction, and two adjacent pressing units are used to press two ends of one welding ribbon group; At least n film tape adsorption units are arranged side by side in sequence on the first mounting bracket along the first horizontal direction, and each of the film tape adsorption units is used to adsorb one film tape.

2. The soldering tape and film tape conveying device according to claim 1, characterized in that: Among the n+1 solder strip clamping units, the first solder strip clamping unit located at the head includes at least a first clamping portion, the n+1 solder strip clamping unit located at the tail includes at least a second clamping portion, and the other solder strip clamping units include a first clamping portion and a second clamping portion, wherein: The first pressing part of the first solder strip pressing unit is used to press the first end of the first solder strip group; the second pressing part of the n+1th solder strip pressing unit is used to press the second end of the nth solder strip group; The second clamping portion of the i-th solder tape pressing unit is used to clamp the second end of the i-1-th solder tape group, and the first clamping portion of the i-th solder tape pressing unit is used to clamp the first end of the i-th solder tape group, wherein i is a natural number from 2 to n; Among the at least n film tape adsorption units, the jth film tape adsorption unit is located between the jth solder tape pressing unit and the j+1th solder tape pressing unit, and is used to adsorb the jth film tape, wherein j is a natural number from 1 to n.

3. The soldering tape and film tape conveying device according to claim 2, characterized in that: The welding strip pressing unit further includes a mounting seat and a guide rail, wherein: The mounting seat is connected to the first mounting bracket; The guide rail is arranged on the mounting seat along the first horizontal direction; The first pressing portion and / or the second pressing portion are slidably connected to the guide rail and can slide along the guide rail.

4. The soldering tape and film tape conveying device according to claim 2, characterized in that: The welding tape and film tape conveying device further comprises a pressing unit driving mechanism arranged on the first mounting bracket; The clamping unit driving mechanism is used to drive each of the first clamping parts and each of the second clamping parts to move in the opposite direction along the first horizontal direction, so that the two ends of each of the welding ribbon groups are respectively inserted into the corresponding first clamping part and the second clamping part, and the welding ribbon group is tightened after the first clamping part and the second clamping part clamp the welding ribbon group.

5. The soldering tape and film tape conveying device according to claim 4, characterized in that: The pressing unit driving mechanism comprises a driving part, a first transmission part and a second transmission part, wherein: The driving unit is mounted on the first mounting bracket; The first transmission part is connected to the first driving end of the driving part, and the first pressing part of each of the welding ribbon pressing units is connected to the first transmission part; The second transmission part is connected to the second driving end of the driving part, and the second pressing part of each of the welding ribbon pressing units is connected to the second transmission part; The driving part drives the first transmission part and the second transmission part to move in the opposite direction along the first horizontal direction, so as to drive each of the first pressing parts and each of the second pressing parts to move in the opposite direction along the first horizontal direction.

6. The soldering tape and film tape conveying device according to claim 2, characterized in that: The first pressing part and the second pressing part have the same structure. The first pressing part includes a connecting bracket, a fixed pressing plate, a movable pressing plate and a movable pressing plate driving mechanism, wherein: The connecting bracket is slidably connected to the guide rail; The fixed pressing plate is fixedly connected to the lower end of the connecting bracket, and a plurality of through holes are arranged side by side on the fixed pressing plate along the second horizontal direction, and a bearing tongue plate is arranged below each of the through holes, wherein the second horizontal direction is perpendicular to the first horizontal direction; The movable pressing plate is located above the fixed pressing plate, and a plurality of elastic pressing rods corresponding to the bearing tongue plates are arranged on the movable pressing plate, each of the elastic pressing rods and the corresponding bearing tongue plate constitute a welding strip clamping assembly, and each welding strip clamping assembly is used to clamp a welding strip; The movable pressing plate driving mechanism is installed on the connecting bracket and is in driving connection with the movable pressing plate, and the movable pressing plate driving mechanism is used to drive the movable pressing plate to move up and down relative to the fixed pressing plate; When the movable pressing plate moves upward to a high position, each of the elastic pressing rods moves away from the corresponding bearing tongue plate, and when the connecting bracket moves along the slide rail toward the corresponding welding strip group, the end of the welding strip enters into the corresponding bearing tongue plate; When the movable pressing plate moves downward to a low position, each of the elastic pressing rods presses the end of the welding strip onto the bearing tongue plate through the through hole.

7. The soldering tape and film tape conveying device according to claim 1, characterized in that: The film tape transport device further comprises a lifting drive mechanism mounted on the first mounting bracket; The film tape adsorption unit is connected to the movable part of the lifting drive mechanism, and the lifting drive mechanism is used to drive the film tape adsorption unit to rise and fall; When the lifting drive mechanism drives the film tape adsorption unit to a low position, the film tape adsorption unit extends downward from the welding tape pressing unit to absorb the film tape to be transported or lay the transported film tape on the welding conveyor line; When the lifting drive mechanism drives the film tape adsorption unit to a high position, the film tape adsorption unit retracts upward to above the welding tape pressing unit.

8. The solder tape and film tape conveying device according to claim 7, characterized in that: The lifting drive mechanism comprises a lifting drive unit and a second mounting bracket, wherein: The lifting drive unit is arranged on the first mounting bracket, the second mounting bracket is connected to the driving end of the lifting drive unit, and the lifting drive unit is used to drive the second mounting bracket to lift; The film tape adsorption unit is adjustably mounted on the second mounting bracket, and the mounting position of the film tape adsorption unit on the second mounting bracket can be adjusted along the first horizontal direction.

9. The solder tape and film tape conveying device according to claim 8, characterized in that: The lifting drive unit includes a first lifting motor and a second lifting motor, and the second mounting bracket includes a first mounting rod and a second mounting rod, wherein: The first lifting motor and the second lifting motor are both mounted on the first mounting bracket; The first mounting rod is in driving connection with the driving end of the first lifting motor and extends along the first horizontal direction, and the second mounting rod is in driving connection with the driving end of the second lifting motor and extends along the first horizontal direction; The first end of the film tape adsorption unit is slidably connected to the first mounting rod, and the second end of the film tape adsorption unit is slidably connected to the second mounting rod; The first lifting motor and the second lifting motor are configured to synchronously drive the first mounting rod and the second mounting rod to rise and fall, thereby driving each of the film tape adsorption units to rise and fall synchronously.

10. The soldering tape and film tape conveying device according to claim 8, characterized in that: The film tape conveying device further comprises a welding tape pressing mechanism, and the welding tape pressing mechanism is connected to the second mounting bracket; When the lifting drive mechanism drives the film tape adsorption unit to a low position, the solder tape pressing mechanism synchronously extends downward from the solder tape pressing unit to press the solder tape group transported to the welding conveyor line; When the lifting drive mechanism drives the film tape adsorption unit to a high position, the solder tape pressing mechanism is synchronously retracted upward to above the solder tape pressing unit.

11. The solder tape and film tape conveying device according to claim 10, characterized in that: The solder tape pressing mechanism includes at least n-1 pressure needle rows alternately arranged with the film tape adsorption units, and the pressure needle rows are adjustably mounted on the second mounting bracket. The mounting position of the pressure needle row on the second mounting bracket can be adjusted along the first horizontal direction, and each of the pressure needle rows is used to press one of the solder tape groups onto the welding conveyor line.

12. The soldering tape and film tape conveying device according to claim 1, characterized in that: The first mounting bracket includes a first mounting plate, a second mounting plate and a rotation drive mechanism, wherein: The first mounting plate is connected to the driving end of the moving mechanism; The second mounting plate is rotatably connected to the first mounting plate via a rotating shaft, and the welding tape pressing unit and the film tape adsorption unit are both mounted on the second mounting plate; The rotation driving mechanism is disposed on the first mounting plate, and is used for driving the second mounting plate to rotate relative to the first mounting plate.

13. The soldering tape and film tape conveying device according to claim 12, characterized in that: The first mounting plate and the second mounting plate are slidably connected via two sets of arc-shaped slide rails, the two sets of arc-shaped slide rails are located on two concentric circles with different radii, the rotating shaft is located at the center of the two concentric circles, and the rotating drive mechanism drives the second mounting plate to rotate along the two sets of arc-shaped slide rails with the rotating shaft as the center; A limiting member is disposed on the second mounting plate, and the limiting member limits the rotation range of the second mounting plate.

14. A string welding machine, characterized in that: The stringer includes a film tape feeding device, a solder tape feeding device, a battery cell feeding device, a battery cell laying device, a welding conveyor line, a stringing device, and a solder tape and film tape conveying device according to any one of claims 1 to 13, wherein: The film strip feeding device is used to provide film strips, the solder strip feeding mechanism is used to provide solder strip groups, and the battery cell feeding mechanism is used to provide battery cells, wherein the battery cells are IBC battery cells; The welding tape and film tape conveying device is used to convey at least n film tapes provided by the film tape feeding device and n welding tape groups provided by the welding tape feeding mechanism to the welding conveyor line, wherein each of the film tapes is stacked on top of the corresponding welding tape group; The cell laying device is used to lay n-1 cells provided by the cell feeding device with their backs facing downwards onto n welding tape groups, wherein one cell is stacked between two adjacent film tapes; The welding conveyor line conveys the laid film strips, welding strip groups and battery cells to the stringing device, and the stringing device is used to weld the film strips, welding strip groups and battery cells into a battery string.

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