Stacking conveying equipment and battery string stacking method

Abstract

The present invention discloses a stacking conveying device and a battery string stacking method, wherein the stacking conveying device comprises a welding strip cutting device, a first guide device, a second guide device and a conveying device which are arranged in sequence; the welding strip cutting device is used to cut the welding strip; the conveying device comprises a conveying belt and a conveying belt driving mechanism, wherein the first end of the conveying belt is arranged to advance a predetermined length in a direction away from the second end, and the conveying belt is turned upward by a predetermined length at the first end, so that an empty loading station is formed on the upper surface of the conveying belt of the predetermined length; the second guide device comprises a second guide body, which is arranged at the first end of the conveying belt and moves synchronously with the first end; the first guide device comprises a first guide body and a first moving mechanism which drives the first guide body to move back and forth between the welding strip cutting device and the second guide device. The technical solution provided by the present invention can ensure that the welding strip is accurately stacked corresponding to the main grid line of the battery cell, thereby improving the production quality of the battery string.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic cell self-production, and in particular to a stacking and conveying device and a cell string stacking method. Background Art

[0002] In the production process of photovoltaic cell string components, the welding ribbons and cell sheets need to be stacked and welded to form a cell string.

[0003] Among them, the feeding of the soldering ribbon is a very important link. The accuracy of the soldering ribbon feeding determines the quality of the components produced by the stringer. Inaccurate soldering ribbon feeding may cause the soldering ribbon to deviate from the main grid line of the battery cell when the battery cell and the soldering ribbon overlap, causing whitening and other problems.

[0004] In order to achieve accurate feeding of the solder ribbon, it is necessary to provide a stacking and conveying device so that the solder ribbon can be accurately stacked with the battery cell, thereby improving the production quality of the battery string. Summary of the invention

[0005] The purpose of the present invention is to provide a stacking conveying device and a battery string stacking method to solve the problem in the prior art that the main grid lines of the battery cells deviate from the main grid lines of the battery cells when the welding strips and battery cells are stacked, which affects the production quality of the battery strings.

[0006] In order to achieve the above-mentioned object, the present invention provides a stacking conveying device, which comprises a welding ribbon cutting device, a first guiding device, a second guiding device and a conveying device which are arranged in sequence; wherein,

[0007] The welding strip cutting device is configured to cut the welding strip;

[0008] The conveying device comprises a conveyor belt and a conveyor belt driving mechanism for driving the conveyor belt to operate, wherein the first end of the conveyor belt is configured to be able to stepwise extend in a direction away from the second end and to stepwise return in a direction toward the second end, wherein each time the conveyor belt steps a predetermined length in a direction away from the second end, the conveyor belt is turned upward at the first end by a predetermined length, so that an upper surface of the conveyor belt of the predetermined length forms an empty loading station;

[0009] The second guide device comprises a second guide body for guiding the welding strip, the second guide body is arranged at the first end of the conveyor belt and can move synchronously with the conveyor belt at the first end;

[0010] The first guide device comprises a first guide body for guiding the welding strip and a first moving mechanism for driving the first guide body to move back and forth between the welding strip cutting device and the second guide device;

[0011] When the first guide body moves close to the solder strip cutting device, it is used to receive the rear section of the cut solder strip, and then guide the solder strip during the movement of the solder strip toward the conveying device; when the first guide body moves to the second guide device, the solder strip on the first guide body continues to be guided by the second guide body, and the first guide body returns to the solder strip cutting device.

[0012] Preferably, the first guide body is provided with a plurality of parallel first guide grooves for guiding the welding strip; and / or,

[0013] The second guide body is provided with a plurality of parallel second guide grooves for guiding the welding strip.

[0014] Preferably, the first guide body comprises a flat plate portion and a guide groove portion which is farther away from the welding strip cutting device than the flat plate portion, and the guide groove portion is provided with a plurality of parallel first guide grooves for guiding the welding strip;

[0015] An opening of one end of the first guide groove facing the flat plate portion is larger than an opening of the other end; and / or an upper surface of the flat plate portion is lower than a bottom surface of the first guide groove.

[0016] Preferably, the second guide body comprises a guide plate having a plurality of parallel second guide grooves and a plurality of clamps arranged at one end of the guide plate close to the conveyor belt, each of the clamps corresponding to one of the second guide grooves.

[0017] Preferably, the second guide device further includes a lifting mechanism for driving the second guide body to rise and fall.

[0018] Preferably, the conveying device further comprises a base, a fixed platform, a stepping platform and a platform moving mechanism for driving the stepping platform to move, wherein:

[0019] The fixed platform is fixedly connected to the base, the stepping platform is slidably connected to the base, and the platform moving mechanism can drive the stepping platform to move stepwise toward or away from the fixed platform in the conveying direction of the conveyor belt;

[0020] The conveyor belt is arranged on the fixed platform and the stepping platform. When the stepping platform moves away from the fixed platform, the conveyor belt flips from bottom to top at the end of the stepping platform away from the fixed platform, so that the upper surface of the conveyor belt extends step by step along with the stepping platform in a direction away from the fixed platform.

[0021] The second guide body is configured to move synchronously with the stepping platform.

[0022] Preferably, the second guide body is fixedly mounted on the stepping platform, and the stepping platform and the guide body are driven by the platform moving mechanism to move synchronously;

[0023] Alternatively, the second guiding device further comprises a second moving mechanism, and the second guiding body is driven by the second moving mechanism and the stepping platform is driven by the platform moving mechanism to move synchronously.

[0024] Preferably, the stacking and conveying equipment further comprises a welding tape traction device, wherein the welding tape traction device comprises a traction chuck for clamping the welding tape and a traction driving mechanism for driving the traction chuck to move;

[0025] The traction chuck clamps the cut solder strip from the solder strip cutting device, moves to the conveying device under the drive of the traction drive mechanism, and lays the solder strip on the loading station of the conveying device; wherein, the first guide body moves synchronously with the traction chuck, and after the first guide body returns, the traction chuck clamps the solder strip and continues to move forward to lay the solder strip on the conveying device.

[0026] There is one or at least two welding tape pulling devices, and at least two welding tape pulling devices pull the welding tape alternately.

[0027] According to another aspect of the present invention, a battery string stacking method is also provided, the battery string stacking method comprising:

[0028] Controlling the welding strip cutting device to cut the welding strip, and controlling the traction clamp of the welding strip traction device to clamp the cut welding strip and move;

[0029] Controlling the first end of the conveyor belt to stepwise extend a predetermined length in a direction away from the second end to form a loading station on the predetermined length of the first end, wherein the predetermined length of the first end of the conveyor belt to stepwise extend is a portion of the first end of the conveyor belt flipped from bottom to top;

[0030] Each time the conveyor belt advances a predetermined length, the cell transport device is controlled to place at least one cell on the loading station of the conveyor belt, and the solder tape traction device tractions the cut solder tape to the conveyor belt and overlaps the front section of the solder tape on the cell;

[0031] Wherein, a second guide body is provided at the first end of the conveyor belt, which moves synchronously with the first end of the conveyor belt, and a movable first guide body is also provided between the welding tape cutting device and the second guide body. When the welding tape cutting device cuts the welding tape, the first guide body supports the rear section of the cut welding tape and returns to the welding tape cutting device when the welding tape pulled by the welding tape pulling device moves to the second guide body. The welding tape moves to the conveyor belt under the traction of the welding tape pulling device and is guided by the second guide body.

[0032] Preferably, when the weld ribbon traction device pulls the cut weld ribbon to move to the conveyor belt, the first guide body moves synchronously with the traction clamp. After the first guide body returns, the weld ribbon traction device clamps the weld ribbon and continues to move forward to a predetermined position of the conveyor device and releases the weld ribbon.

[0033] In the technical solution provided by the present invention, when providing welding strips to the conveyor belt, the welding strips are guided by the first guide device and the second guide device, so that each welding strip can be accurately stacked corresponding to the main grid line position of the battery cell, thereby greatly improving the production quality of the battery string. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic structural diagram of a stacking conveying device according to one embodiment of the present invention;

[0035] Figure 2 for Figure 1 A partial enlarged view of

[0036] Figure 3 is a schematic structural diagram of a first guide device;

[0037] Figure 4 It is a schematic structural diagram of a conveying device in a first embodiment of the present invention;

[0038] Figure 5 It is a schematic structural diagram of a conveying device in a second embodiment of the present invention;

[0039] Figure 6 It is a schematic structural diagram of a conveying device in a third embodiment of the present invention;

[0040] Figure 7 It is a schematic structural diagram of a conveying device in a fourth embodiment of the present invention.

[0041] Description of Reference Numerals

[0042] 1- conveying device; 11- conveyor belt; 12- base; 13- stepping platform; 131- mounting bracket; 14- fixed platform; 15- conveyor belt driving mechanism; 151- active roller; 152- first guide roller; 153- second guide roller; 154- tensioning roller; 155- rotating bracket; 156- tensioning roller; 157- guide roller; 16- driving roller; 17- driven roller; 2- welding strip cutting device; 3- first guide device; 31- first guide body; 311- flat plate part; 312- guide groove part; 313- first guide groove; 32- frame; 33- first moving mechanism; 331- conveyor belt; 332- toothed block; 4- second guide device; 41- second guide body; 411- second guide groove; 412- chuck; 5- welding strip traction device. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0044] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known structures, methods, devices, implementations, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0045] For ease of description, spatially relative terms such as "upper", "lower", "left", "right", etc. may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the elements described as being "under" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can also be positioned in other ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used here can be interpreted accordingly.

[0046] The present invention provides a stacking conveying device, such as Figure 1 and Figure 2 As shown, the stacking conveying device comprises a welding ribbon cutting device 2, a first guiding device 3, a second guiding device 4 and a conveying device 1 which are arranged in sequence; wherein,

[0047] The welding strip cutting device 2 is configured to cut welding strips;

[0048] The conveying device 1 comprises a conveyor belt and a conveyor belt driving mechanism for driving the conveyor belt to operate, wherein the first end of the conveyor belt is configured to be able to stepwise extend in a direction away from the second end and to stepwise return in a direction toward the second end, wherein each time the conveyor belt steps a predetermined length in a direction away from the second end, the conveyor belt is turned upward by a predetermined length at the first end, so that an upper surface of the conveyor belt of the predetermined length forms an empty loading station;

[0049] The second guide device 4 comprises a second guide body 41 for guiding the welding strip, wherein the second guide body 41 is arranged at the first end of the conveyor belt and can move synchronously with the conveyor belt at the first end;

[0050] The first guiding device 3 includes a first guiding body 31 for guiding the welding strip and a first moving mechanism for driving the first guiding body 31 to move back and forth between the welding strip cutting device 2 and the second guiding device 4;

[0051] When the first guide body 31 moves to a position close to the solder strip cutting device 2, it is used to receive the rear section of the cut solder strip, and then guide the solder strip during its movement toward the conveying device 1; when the first guide body 31 moves to the second guide device 4, the solder strip on the first guide body 31 continues to be guided by the second guide body 41, and the first guide body 31 returns to the solder strip cutting device 2.

[0052] The stacking conveying device provided by the present invention is used for stacking welding strips and battery cells in sequence to form battery strings. Specifically, the conveyor belt of the conveying device 1 is extended once in each step toward the direction of the first end, and an empty loading station is formed on the portion where the conveyor belt is stepped and extended, and the battery cells and welding strips are stacked at the loading station. In this way, in the process of loading battery cells and welding strips, it is not necessary to step the conveyor belt toward the welding station once every time the battery cells and welding strips are loaded. After a predetermined number of battery cell stacking assemblies are loaded, they are transported together to the welding station for welding, thereby ensuring the heating consistency of each battery cell and improving the welding quality. When providing the welding strip to the loading station, the welding strip is first cut by the welding strip cutting device 2, and the cut welding strip is pulled by the welding strip pulling device 5 and moved onto the conveyor belt ( Figure 1 and Figure 2It shows that the welding strip is alternately pulled by two welding strip pulling devices 5). During this process, the first guide body 31 of the first guide device 3 supports the cut welding strip and moves synchronously with the welding strip to guide the welding strip. When the first guide body 31 moves to the second guide device 4, the first guide body 31 of the first guide device 3 returns to the welding strip cutting device 2, and the welding strip continues to be guided by the second guide body 41 and moves to the predetermined position of the conveyor belt.

[0053] The technical solution provided by the present invention guides the welding strips through the first guide device 3 and the second guide device 4 when providing welding strips to the loading station of the conveyor belt, so that each welding strip can be accurately stacked corresponding to the main grid line position of the battery cell, thereby greatly improving the production quality of the battery string.

[0054] In a specific embodiment of the present invention, the specific structure of the first guide device 3 is as follows: Figure 3 As shown, the first guide device 3 includes a first guide body 31 and a first moving mechanism 33 for driving the first guide body 31 to move, wherein the first guide body 31 is provided with a plurality of parallel first guide grooves 313 for guiding the welding strip.

[0055] Further, the first guide body 31 includes a flat plate portion 311 and a guide groove portion 312 which is farther away from the welding strip cutting device 2 than the flat plate portion 311, and the guide groove portion 312 is provided with a plurality of parallel first guide grooves 313 for guiding the welding strip, and the first guide grooves 313 extend in the direction from the flat plate portion 311 to the guide groove portion 312. When the first guide body 31 moves to the welding strip cutting device 2, the welding strip traction device 5 clamps the head of the cut welding strip, and the tail of the welding strip is supported on the flat plate portion 311. When the welding strip traction device 5 pulls the welding strip to move in the direction of the conveyor belt, the welding strip enters the first guide groove 313 of the guide groove portion 312, and moves synchronously with the welding strip, so as to guide the movement of the welding strip to the conveyor belt.

[0056] Preferably, the opening of one end of the first guide groove 313 facing the flat plate portion 311 is larger than the opening of the other end;

[0057] Preferably, the depth of the first guide groove 313 gradually becomes shallower from one end to the other end of the flat plate portion 311 .

[0058] Preferably, the height of the bottom of the first guide groove 313 is greater than or equal to the height of the upper surface of the flat plate portion 311 .

[0059] In this way, the welding strip can easily enter the first guide groove 313 from the flat plate portion 311, and it is also beneficial to guide the welding strip during its movement toward the conveyor belt.

[0060] In this embodiment, the first guiding device 3 further includes a first moving mechanism 33 for driving the first guiding body 31 to translate.

[0061] Specifically, the first moving mechanism 33 includes a motor, a driving wheel, a driven wheel, and a conveyor belt 331 wound around the driving wheel and the driven wheel. When the motor drives the driving wheel to rotate, the conveyor belt 331 runs;

[0062] The first guide device 3 further includes a frame 32 , the first guide body 31 is mounted on the frame 32 , and the frame 32 is connected to the conveyor belt 331 to drive the frame 32 and the first guide body 31 to move during the operation of the conveyor belt 331 .

[0063] Preferably, the conveyor belt 331 is a toothed belt with teeth, and the first moving mechanism 33 also includes a toothed block 332 with meshing teeth, and the toothed block 332 is fixed on the frame 32. When the toothed block 332 meshes with the teeth on the toothed belt, the toothed belt drives the frame 32 to move, thereby moving the first guide body 31.

[0064] The first guide device 3 also includes a lifting mechanism (not shown) for driving the first guide body 31 to rise and fall. Specifically, the lifting mechanism can be installed on the frame 32, and the first guide body 31 is installed at the driving end of the lifting mechanism, and the driving end drives the first guide body 31 to rise and fall relative to the frame 32.

[0065] It can be understood by those skilled in the art that the configuration of the first guide body 31 for guiding the welding strip is not limited to Figure 3 In the embodiment shown, for example, the guide groove portion 312 may not be provided, and a plurality of clamps for clamping the solder strip may be provided at the end of the flat plate portion 311 away from the solder strip cutting device 2, and the solder strip may be clamped and moved by the clamps, thereby achieving accurate placement of the solder strip; or, a guide groove may be provided on the first guide body 31 that runs from one end to the other end without providing the flat plate portion 311.

[0066] In this embodiment, the second guide body 41 of the second guide device 4 is installed on the conveying device 1 and moves synchronously with the first end of the conveyor belt.

[0067] Specific as Figure 2 As shown, the second guide body 41 is provided with a plurality of parallel second guide grooves 411 for guiding the welding strip.

[0068] Preferably, the second guide body 41 includes a guide plate having a plurality of parallel second guide grooves 411 and a plurality of clamps 412 arranged at one end of the guide plate close to the conveyor belt, and each of the clamps 412 corresponds to one of the second guide grooves 411 .

[0069] When the welding ribbon pulling device 5 clamps the welding ribbon and moves it to the second guide body 41, the tail of the welding ribbon enters the second guide groove 411. When the welding ribbon moves to the predetermined position on the conveying device 1, the clamp 412 clamps the tail position of the welding ribbon to ensure that the welding ribbon is in the correct position. Then the transport device transports the battery cell and the pressing tool. The pressing tool is placed on the front section of the welding ribbon (i.e., the part close to the head position clamped by the welding ribbon pulling device). After the front section of the welding ribbon is pressed, the welding ribbon pulling device 5 releases the head of the welding ribbon. The battery cell is placed on the rear section of the welding ribbon. After the rear section of the welding ribbon is pressed, the clamp 412 releases the tail of the welding ribbon. Of course, the head and tail of the welding ribbon can also be released at the same time after the pressing tool presses the front section of the welding ribbon and the battery cell presses the rear section of the welding ribbon.

[0070] Preferably, the second guide device 4 may also include a lifting mechanism for driving the second guide body 41 to rise and fall. When transporting the battery cell to the loading station, the second guide body 41 may be driven to descend a predetermined distance by the lifting mechanism, and the height of the uppermost surface of the second guide body 41 (the uppermost surface of the guide plate and the clamp 412) is consistent with the height of the lower surface of the battery cell placed on the loading station, or is lower than the height of the lower surface of the battery cell, so as to avoid the part of the battery cell extending out of the conveyor belt from interfering with the second guide device 4 when the battery cell is laid on the loading station, thereby causing damage to the battery cell. Preferably, when placing the battery cell, it is preferably set that the second guide body 41 is descended until the height of the uppermost surface of the second guide body 41 is consistent with the height of the lower surface of the battery cell, so that when the battery cell is placed on the loading station, the part of the battery cell that exceeds the end of the conveyor belt can be supported by the second guide body 41.

[0071] In the technical solution provided by the present invention, in order to enable the first end of the conveyor belt of the conveying device 1 to extend step by step, there may be multiple implementations:

[0072] In a first embodiment, if Figure 4 As shown, the conveying device 1 includes a conveyor belt 11, a base 12, a fixed platform 14, a stepping platform 13 and a platform moving mechanism for driving the stepping platform 13 to move, wherein:

[0073] The fixed platform 14 is fixedly connected to the base 12, the stepping platform 13 is slidably connected to the base 12, and the platform moving mechanism can drive the stepping platform 13 to move stepwise toward or away from the fixed platform 14 in the conveying direction of the conveyor belt;

[0074] The conveyor belt 11 is arranged on the fixed platform 14 and the stepping platform 13. When the stepping platform 13 moves away from the fixed platform 14, the conveyor belt 11 turns over from bottom to top at the end of the stepping platform 13 away from the fixed platform 14, so that the upper surface of the conveyor belt 11 extends step by step along with the stepping platform 13 in a direction away from the fixed platform 14.

[0075] The second guide body 41 of the second guide device 4 is configured to move synchronously with the stepping platform 13 .

[0076] In this embodiment, the conveyor belt driving mechanism 15 driving the conveyor belt 11 includes a driving roller 151, a first guide roller 152, a second guide roller 153 and a tensioning roller 154;

[0077] The active roller 151 is arranged at the end of the fixed platform 14 away from the stepping platform 13, and is driven to rotate by a driving motor. The first guide roller 152 is located at the end of the stepping platform 13 away from the fixed platform 14, and the first guide roller 152 and the second guide roller 153 are installed on the stepping platform 13. The tensioning roller 154 is located below the first guide roller 152 and the second guide roller 153. The tensioning roller 154 is arranged to be able to move back and forth along the conveying direction of the conveyor belt 11 to adjust so as to tension the conveyor belt 11. Specifically, a slide rail extending along the conveying direction of the conveyor belt 11 can be arranged on the base 12, and the tensioning roller 154 moves back and forth along the slide rail under the drive of the tensioning roller driving cylinder; the conveyor belt 11 is wound around the active roller 151, the first guide roller 152, the second guide roller 153 and the tensioning roller 15 in sequence, wherein the second guide roller 153 is located on the transmission surface of the conveyor belt 11;

[0078] When the stepping platform 13 moves away from the fixed platform 14, the first guide roller 152 and the second guide roller 153 move with the stepping platform 13 and guide the conveyor belt 11 to turn upward and extend from below. The platform moving mechanism driving the stepping platform 13 to move may include a motor and a lead screw driven by the motor, and the stepping platform 13 is mounted on a nut matched with the lead screw.

[0079] When the platform moving mechanism drives the stepping platform 13 to move in a direction away from the fixed platform 14, the stepping platform 13 moves synchronously with the first guide roller 152 and the second guide roller 153 installed thereon, and the conveyor belt 11 flips from bottom to top along the first guide roller 152 and the second guide roller 153 as the part that steps and extends on the stepping platform 13.

[0080] In this embodiment, the second guide body 41 of the second guide device 4 is fixedly mounted on the stepping platform 13 , and the stepping platform 13 and the second guide body 41 are driven by the platform moving mechanism to move synchronously.

[0081] It can be understood that the second guide device 4 can also include a second moving mechanism, and the second guide body 41 is driven by the second moving mechanism and the stepping platform 13 is driven by the platform moving mechanism to move synchronously. That is, the second guide body 41 of the second guide device 4 and the stepping platform 13 are driven independently. Among them, the second moving mechanism can include a motor and a screw driven by the motor, and the second guide body 41 is installed on a screw nut matched with the screw.

[0082] In the second embodiment, the structure of the conveying device 1 is as follows Figure 5 As shown, the structure and working principle of the conveying device 1 in this embodiment are basically the same as those of the first embodiment described above, and also include a conveyor belt 11, a base 12, a fixed platform 14, a stepping platform 13 and a conveyor belt driving mechanism 15. The conveyor belt driving mechanism 15 includes an active roller 151, a first guide roller 152, a second guide roller 153 and a tensioning roller 154. The conveyor belt 11 is sequentially wound around the active roller 151, the first guide roller 152, the second guide roller 153 and the tensioning roller 15, wherein the second guide roller 153 is located on the transmission surface of the conveyor belt 11.

[0083] Different from the first embodiment, the conveying device 1 in this embodiment also includes a mounting bracket 131, a first end of the mounting bracket 131 is connected to the bottom of the stepping platform 13, and a second end of the mounting bracket 131 extends outward from the end of the stepping platform 13 away from the fixed platform 14, and a second guide roller 153 is installed at the second end of the mounting bracket 131 and is located below the first guide roller 152.

[0084] By setting up the mounting bracket 131, the second guide roller 153 is indirectly mounted on the bottom of the stepping platform 13 through the mounting bracket 131, which can ensure that the second guide roller 153 extends outward to the outside of the stepping platform 13. In this way, the conveyor belt 11 wound around the second guide roller 153 can also be exposed to the outside of the stepping platform 13, thereby facilitating the installation and adjustment of the conveyor belt 11.

[0085] Figure 6The third embodiment of the conveying device 1 provided by the present invention is shown. Figure 6 As shown, the conveyor belt driving mechanism 15 for driving the conveyor belt to run includes a driving roller 151, a tensioning roller 156, a guide roller 157 and a rotating bracket 155, wherein:

[0086] The active roller 151 is arranged at the end of the fixed platform 14 away from the stepping platform 13, the first end of the rotating bracket 155 is rotatably connected to the base 12, the second end of the rotating bracket 155 is located above the first end and extends outwardly from the end of the stepping platform 13 away from the fixed platform 14, the tensioning roller 156 is connected to the second end of the rotating bracket 155, and the guide roller 157 is installed on the base 12 and is located below the tensioning roller 156; the conveyor belt 11 is wound around the active roller 151, the tensioning roller 156 and the guide roller 157 in sequence, so that, compared with the first and second embodiments described above, each roller in this embodiment is located on the inner side of the conveyor belt, and the transmission surface of the conveyor belt 11 does not contact any roller, which can reduce the wear of the transmission surface of the conveyor belt;

[0087] When the stepping platform 13 steps away from the fixed platform 14, the rotating bracket 155 is configured to rotate toward the stepping platform 13, so that the portion of the conveyor belt 11 that steps and extends on the stepping platform 13 is the portion of the conveyor belt released by the rotation of the rotating bracket 155, and at the same time, the conveyor belt 11 is always kept tensioned by the tensioning roller 156 on the rotating bracket 155; when the stepping platform 13 steps toward the fixed platform 14, the rotating bracket 155 is configured to rotate away from the stepping platform 13, so that the extended portion of the conveyor belt 11 can be guided downward by the tensioning roller 156 and the guide roller 157 on the rotating bracket 155 and keep the conveyor belt 11 tensioned.

[0088] In order to drive the rotating bracket 155 to rotate, a rotating bracket driving mechanism may be provided in this embodiment. The rotating bracket driving mechanism may adopt various known driving mechanisms, such as a driving cylinder, etc. This embodiment does not impose any particular limitation on this.

[0089] Figure 7 A fourth embodiment of the delivery device 1 is shown, Figure 7 As shown, the conveying device 1 includes a conveying mechanism and a translation driving mechanism for driving the conveying mechanism to translate, the conveying mechanism includes a base 12, a driving roller 16, a driven roller 17 and the conveying belt 11, the driving roller 16 and the driven roller 17 are installed on the base 12, and the two ends of the conveying belt 11 are respectively wound around the driving roller 16 and the driven roller 17; the translation driving mechanism (not shown in the figure) is connected to the base 12 to drive the base 12 to move back and forth along the conveying direction of the conveying belt 11;

[0090] When the conveying device 1 is driven by the translation drive mechanism to step from the second end toward the first end, the conveying belt 11 is stepped toward the second end by the same distance, thereby forming the loading station at the first end of the conveying belt 11. Figure 7 As shown in the figure, the translation drive mechanism drives the conveying device to move at a speed v1 and in the direction indicated by the left arrow, while the conveyor belt 11 moves at a speed v1 and in the direction indicated by the right arrow. In this way, in the process of the conveyor belt 11 stepping toward the first end (i.e., in the left direction), the first end portion of the conveyor belt 11 is always in an empty state, forming a loading station for receiving battery cells and solder strips.

[0091] In addition, in the technical solution provided by the present invention, the stacking and conveying equipment further includes a welding tape traction device 5, and the welding tape traction device 5 includes a traction chuck for clamping the welding tape and a traction drive mechanism for driving the traction chuck to move;

[0092] The traction chuck of the welding tape traction device 5 clamps the cut welding tape from the welding tape cutting device 2, and moves to the conveying device 1 under the drive of the traction drive mechanism, and lays the welding tape on the loading station of the conveying device 1; wherein, the first guide body 31 moves synchronously with the traction chuck of the welding tape traction device 5, and after the first guide body 31 returns, the traction chuck of the welding tape traction device 5 clamps the welding tape and continues to move forward to the second guide body 41, and lays the welding tape on the conveying device 1 under the guidance of the second guide body 41.

[0093] There may be one or at least two welding tape pulling devices 5, and at least two welding tape pulling devices 5 pull the welding tape alternately. Figure 1 and Figure 2 Two welding tape pulling devices 5 are shown to alternately pull the cut welding tape from the welding tape cutting device 2 and move the cut welding tape to the loading station of the conveying device 1 for laying.

[0094] According to another aspect of the present invention, a battery string stacking method is also provided, the battery string stacking method comprising:

[0095] Controlling the welding strip cutting device 2 to cut the welding strip, and controlling the welding strip pulling device 5 to clamp the cut welding strip and move;

[0096] Control the first end of the conveyor belt 11 to stepwise extend a predetermined length in a direction away from the second end to form a loading station on the predetermined length of the first end, wherein the predetermined length of the first end of the conveyor belt 11 that is stepwise extended is a portion of the first end of the conveyor belt that flips from bottom to top;

[0097] Each time the conveyor belt 11 advances a predetermined length, the cell handling device is controlled to place at least one cell on the loading station of the conveyor belt, and the solder tape traction device 5 tractions the cut solder tape to move to the conveyor belt, and overlaps the front section of the solder tape on the cell;

[0098] Among them, a second guide body 41 is provided at the first end of the conveyor belt 11 and moves synchronously with the first end of the conveyor belt. A movable first guide body 31 is also provided between the weld strip cutting device 2 and the second guide body 41. When the weld strip cutting device 2 cuts the weld strip, the first guide body 31 supports the rear section of the cut weld strip and returns to the weld strip cutting device 2 when the weld strip pulled by the weld strip pulling device 5 moves to the second guide body 41. The weld strip moves to the conveyor belt 11 under the traction of the weld strip pulling device 2 and is guided by the second guide body 41.

[0099] In which, when the welding ribbon moves to the conveyor belt 11 under the traction of the welding ribbon traction device 5, the first guide body 31 moves synchronously with the traction clamp of the welding ribbon traction device 5. After the first guide body 31 returns, the welding ribbon traction device 5 clamps the welding ribbon and continues to move forward to the predetermined position of the conveyor device 1 and releases the welding ribbon.

[0100] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A stacking conveying device, characterized in that: The stacking conveying device comprises a welding strip cutting device, a first guiding device, a second guiding device and a conveying device which are arranged in sequence; wherein, The welding strip cutting device is configured to cut the welding strip; The conveying device comprises a conveyor belt and a conveyor belt driving mechanism for driving the conveyor belt to operate, wherein the first end of the conveyor belt is configured to be able to stepwise extend in a direction away from the second end and to stepwise return in a direction toward the second end, wherein each time the conveyor belt steps a predetermined length in a direction away from the second end, the conveyor belt is turned upward at the first end by a predetermined length, so that an upper surface of the conveyor belt of the predetermined length forms an empty loading station; The second guide device comprises a second guide body for guiding the welding strip, the second guide body is arranged at the first end of the conveyor belt and can move synchronously with the conveyor belt at the first end; The first guide device comprises a first guide body for guiding the welding strip and a first moving mechanism for driving the first guide body to move back and forth between the welding strip cutting device and the second guide device; When the first guide body moves to a position close to the solder strip cutting device, it is used to receive the rear section of the cut solder strip, and then guide the solder strip when the solder strip moves toward the conveying device; when the first guide body moves to the second guide device, the solder strip on the first guide body continues to be guided by the second guide body, and the first guide body returns to the solder strip cutting device; The stacking and conveying equipment further comprises a welding strip traction device, wherein the welding strip traction device comprises a traction chuck for clamping the welding strip and a traction driving mechanism for driving the traction chuck to move; The traction chuck clamps the cut solder strip from the solder strip cutting device, moves to the conveying device under the drive of the traction drive mechanism, and lays the solder strip on the loading station of the conveying device; wherein, the first guide body moves synchronously with the traction chuck, and after the first guide body returns, the traction chuck clamps the solder strip and continues to move forward to lay the solder strip on the conveying device.

2. The stacking conveying device according to claim 1, characterized in that: The first guide body is provided with a plurality of parallel first guide grooves for guiding the welding strip; and / or, The second guide body is provided with a plurality of parallel second guide grooves for guiding the welding strip.

3. The stacking and conveying device according to claim 1, characterized in that: The first guide body comprises a flat plate portion and a guide groove portion which is farther away from the welding strip cutting device than the flat plate portion, and the guide groove portion is provided with a plurality of parallel first guide grooves for guiding the welding strip; An opening of one end of the first guide groove facing the flat plate portion is larger than an opening of the other end; and / or an upper surface of the flat plate portion is lower than a bottom surface of the first guide groove.

4. The stacking and conveying device according to claim 1, characterized in that: The second guide body includes a guide plate having a plurality of parallel second guide grooves and a plurality of clamps arranged at one end of the guide plate close to the conveyor belt, each of the clamps corresponding to one of the second guide grooves.

5. The stacking and conveying device according to claim 1, characterized in that: The second guide device also includes a lifting mechanism for driving the second guide body to rise and fall.

6. The stacking conveying device according to claim 1, characterized in that: The conveying device also includes a base, a fixed platform, a stepping platform and a platform moving mechanism for driving the stepping platform to move, wherein: The fixed platform is fixedly connected to the base, the stepping platform is slidably connected to the base, and the platform moving mechanism can drive the stepping platform to move stepwise toward or away from the fixed platform in the conveying direction of the conveyor belt; The conveyor belt is arranged on the fixed platform and the stepping platform. When the stepping platform moves away from the fixed platform, the conveyor belt flips from bottom to top at the end of the stepping platform away from the fixed platform, so that the upper surface of the conveyor belt extends step by step along with the stepping platform in a direction away from the fixed platform. The second guide body is configured to move synchronously with the stepping platform.

7. The stacking and conveying device according to claim 6, characterized in that: The second guide body is fixedly mounted on the stepping platform, and the stepping platform and the second guide body are driven by the platform moving mechanism to move synchronously; Alternatively, the second guiding device further comprises a second moving mechanism, and the second guiding body is driven by the second moving mechanism and the stepping platform is driven by the platform moving mechanism to move synchronously.

8. The stacking conveying device according to any one of claims 1 to 7, characterized in that: The welding strip pulling device is provided with one or at least two, and the at least two welding strip pulling devices pull the welding strip alternately.

9. A battery string stacking method, characterized in that: The battery string stacking method comprises: Controlling the welding strip cutting device to cut the welding strip, and controlling the traction clamp of the welding strip traction device to clamp the cut welding strip and move; Controlling the first end of the conveyor belt to stepwise extend a predetermined length in a direction away from the second end to form a loading station on the predetermined length of the first end, wherein the predetermined length of the first end of the conveyor belt to stepwise extend is a portion of the first end of the conveyor belt flipped from bottom to top; Each time the conveyor belt advances a predetermined length, the cell transport device is controlled to place at least one cell on the loading station of the conveyor belt, and the solder tape traction device tractions the cut solder tape to the conveyor belt and overlaps the front section of the solder tape on the cell; Wherein, a second guide body is provided at the first end of the conveyor belt, which moves synchronously with the first end of the conveyor belt, and a movable first guide body is also provided between the welding tape cutting device and the second guide body. When the welding tape cutting device cuts the welding tape, the first guide body supports the rear section of the cut welding tape and returns to the welding tape cutting device when the welding tape pulled by the welding tape pulling device moves to the second guide body. The welding tape moves to the conveyor belt under the traction of the welding tape pulling device and is guided by the second guide body.

10. The battery string stacking method according to claim 9, characterized in that: When the weld ribbon traction device tractions the cut weld ribbon to move to the conveyor belt, the first guide body moves synchronously with the traction clamp. After the first guide body returns, the weld ribbon traction device clamps the weld ribbon and continues to move forward to a predetermined position of the conveyor device and releases the weld ribbon.

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