IBC solar cell string light welding device and use method

Abstract

The present invention relates to the technical field of IBC solar cell optical welding, and in particular to an IBC solar cell string optical welding device and a method of use, comprising a transfer rack, wherein the transfer rack is provided with: a rack to be processed, a conveyor belt and an L-shaped push plate, the rack to be processed is arranged on one side of the transfer rack, the transfer rack is formed into a T-shape by a connected transverse rack and a vertical rack, the conveyor belt is installed in the transverse rack, the rack to be processed is a rack structure running left and right, and the L-shaped push plate is slidingly arranged in the vertical rack. When the sliding long block is not located in the process groove, the blocking long block blocks the infrared transmitter and the infrared receiver, and drives the moving plate and the battery cell to rotate 90°, so that the direction of the battery cell process groove is vertical to the direction of the pushed welding strip, and then the direction of the battery cell process groove is detected while correcting the direction of the battery cell process groove to avoid incorrect welding between the battery cell and the welding strip.

Description

Technical Field

[0001] The present invention relates to the technical field of light welding of IBC solar cells, and particularly to an IBC solar cell string light welding device and a usage method thereof. Background Art

[0002] IBC solar cells emerged in the 1970s and are the earliest studied back-contact cells. Initially, they were mainly applied in concentrator systems. This type of cell selects an n-type substrate material, and a thermal oxide film is covered on both the front and back surfaces to reduce surface recombination. Photolithography technology is used to form finger-like cross-arranged P regions and N regions.

[0003] In the prior art, a welding machine for welding electrodes of a solar cell panel, such as the one disclosed in the patent with the publication number CN118559257B, is mostly adopted. This technology includes a frame, a welding mechanism, and a support mechanism. The welding mechanism includes connecting guide columns and a welding main body. The welding main body is fixedly installed in the middle on the outside of the support frame. Hydraulic rods and welding guns are respectively installed at both ends of the connecting guide columns. The hydraulic rods are fixedly installed at the side of the top of the support frame. The welding machine for welding electrodes of the solar cell panel achieves a stable welding effect, with a stable structure operation, reducing the influence of external forces and vibrations, making the welding accurate. However, there are still problems in the use process due to structural limitations in the above technology:

[0004] In the existing IBC solar cells, grooves are processed on the back through processes such as photolithography, and P regions and N regions are formed through these grooves for power generation operations. When connecting multiple IBC solar cells in series through solder strips, the solder strips need to be in contact with the P regions and N regions of multiple IBC solar cells. The P regions and N regions are formed in the concave and convex regions on both sides of the groove. Therefore, the solder strip direction needs to be perpendicular to the groove direction of multiple IBC solar cells for laser welding. However, due to the existence of many processes during the process from process processing to transporting the IBC solar cells to the welding station, the probability of the IBC solar cells shifting increases. At this time, if the groove direction of the IBC solar cells is parallel to the solder strip direction, the above technology cannot detect and correct the IBC solar cells in this state, and it is very easy to cause incorrect welding between the IBC solar cells and the solder strips. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the groove direction of IBC solar cells and the solder strip direction in a parallel state cannot be detected and corrected, and to propose an IBC solar cell string light welding device and a usage method thereof.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An IBC solar cell string optical welding device, comprising a transfer frame and a plurality of single battery cells. A plurality of process grooves are provided at one end of one single battery cell, and the following are provided at the transfer frame:

[0008] A to-be-processed frame, a conveyor belt and an L-shaped push plate. The to-be-processed frame is arranged on one side of the transfer frame. The transfer frame is composed of a horizontally connected frame and a vertically connected frame to form a T-shaped structure. The conveyor belt is installed in the horizontal frame. The to-be-processed frame is a frame structure extending from left to right. The L-shaped push plate is slidably arranged in the vertical frame;

[0009] A robotic arm, a moving plate, a first pneumatic suction cup, a laser welder, a storage box and welding strip. The robotic arm is arranged on one side of the to-be-processed frame. The moving plate is arranged on the robotic arm. Four first pneumatic suction cups are arranged on one moving plate, and the four first pneumatic suction cups are respectively used to adsorb the four side ends of one single battery cell. The laser welder is arranged on the side of the to-be-processed frame away from the robotic arm. The lower end of the storage box is rotatably installed in one end of the to-be-processed frame away from the transfer frame. A plurality of welding strips are placed in the inner cavity of one storage box;

[0010] A detection mechanism, which is arranged at the transfer frame and the moving plate, and the detection mechanism is used to detect whether the process groove direction of the single battery cell at the front end of the vertical frame is perpendicular to the direction of the to-be-processed frame; a placement mechanism, which is arranged at the to-be-processed frame, and the placement mechanism is used to place three single battery cells at the same time; a pushing mechanism, which is arranged at the storage box, and the pushing mechanism is used to push two welding strips.

[0011] Preferably, a first horizontal groove is opened on the side wall of the vertical frame. The L-shaped push plate is slidably sleeved at the first horizontal groove. A first cylinder is fixedly installed on the rear inner wall of the vertical frame, and the output end of the first cylinder is fixedly connected to the L-shaped push plate. A vertical through groove is penetrated through the vertical frame on one side of the first cylinder.

[0012] Preferably, an installation frame is arranged on the side of the to-be-processed frame away from the robotic arm. A three-way mover is installed on the installation frame. The laser welder is arranged at the three-way mover.

[0013] Preferably, the detection mechanism includes:

[0014] A first vertical groove, a connection installation chamber, a rotating shaft and a driving motor. Three of the first vertical grooves are respectively opened on the front three side walls of the vertical frame, and the remaining one first vertical groove is opened at one end of the L-shaped push plate close to the front end of the vertical frame. The connection installation chamber is installed on the robotic arm. The moving plate is rotationally connected to the connection installation chamber through the rotating shaft. The driving motor is fixedly installed in the inner cavity of the connection installation chamber, and the output end of the driving motor is fixedly connected to the rotating shaft.

[0015] Preferably, the detection mechanism further includes:

[0016] A connecting long block, an installation through groove, a sliding long block, an infrared emitter, and an infrared receiver. The four connecting long blocks are integrally formed at the four side walls of a moving flat plate respectively. The four first pneumatic suction cups are fixedly connected to the lower ends of the four connecting long blocks respectively. An installation through groove is opened at the lower middle end of a moving flat plate. Multiple groups of sliding long blocks are integrally formed on both sides of an installation through groove symmetrically, and two sliding long blocks are in a group. A group of sliding long blocks is movably sleeved in a process groove. An infrared emitter and an infrared receiver are fixedly installed at the opposite ends of a group of sliding long blocks respectively, and the infrared receiver is electrically connected to the driving motor;

[0017] A reset sliding groove, a reset spring, and a blocking long block. A reset sliding groove is opened at the side wall of an installation through groove. A blocking long block is slidably sleeved in a reset sliding groove. A reset spring is welded between the inner wall of a reset sliding groove and a blocking long block.

[0018] Preferably, the placement mechanism includes:

[0019] A second vertical groove, a second horizontal groove, a third vertical groove, a placement flat plate, a second pneumatic suction cup, and a first placement cylinder. The three second vertical grooves, a second horizontal groove, and a third vertical groove are opened at the side wall of a to-be-processed frame in a communicating manner. The three placement flat plates are respectively slidably sleeved at the three second vertical grooves. A group of second pneumatic suction cups is fixedly installed at the upper end of a placement flat plate. The three first placement cylinders are fixedly connected to the inner bottom end of a to-be-processed frame in a linear equidistant manner, and the output ends of the three first placement cylinders are respectively fixedly connected to the lower ends of the three placement flat plates.

[0020] Preferably, the placement mechanism further includes:

[0021] A second placement cylinder, a first erection block, and a first placement groove. A second placement cylinder is fixedly connected in a second horizontal groove. A first erection block is slidably sleeved in a second horizontal groove, and the output end of the second placement cylinder is fixedly connected to the first erection block. Two first placement grooves are opened at the upper end of a first erection block;

[0022] A third placement cylinder, a second erection block, and a second placement groove. A third placement cylinder is fixedly installed in a third vertical groove. A second erection block is slidably sleeved in a third vertical groove, and the output end of the third placement cylinder is fixedly connected to the second erection block. Two second placement grooves are opened at the upper end of a second erection block.

[0023] Preferably, the pushing mechanism includes:

[0024] A placement chamber, an input port, and a pushing port. The two placement chambers are symmetrically installed in the inner cavity of a storage box. The two input ports are penetrated and opened at one end of a storage box, and the two pushing ports are penetrated and opened at the other end of a storage box.

[0025] Preferably, the pushing mechanism further includes:

[0026] A first pushing chute, a first pushing cylinder, and a blocking cover plate. The two first pushing chutes are symmetrically opened at the positions of the two pushing ports in the inner cavity of a storage box. The two first pushing cylinders are respectively fixedly installed in the two first pushing chutes. The two blocking cover plates are respectively slidably sleeved at the two first pushing chutes, and the output ends of the two first pushing cylinders are respectively fixedly connected to the two blocking cover plates;

[0027] A second pushing chute, a second pushing cylinder, and a pushing plate. A group of the second pushing chutes are opened in the inner cavity of a storage box away from the two first pushing chutes. A group of the second pushing cylinders are fixedly connected in a group of the second pushing chutes. A pushing plate is slidably sleeved at a group of the second pushing chutes, and the output end of a group of the second pushing cylinders is fixedly connected to a pushing plate.

[0028] A using method of an IBC solar cell string optical welding device includes the following steps:

[0029] Step S1: First, limit a single battery cell at the front end of the vertical frame, and then slide four connecting long blocks into four first vertical grooves through the robotic arm to align the moving flat plate with the single battery cell vertically, and start four first pneumatic suction cups to adsorb the single battery cell, and then drive the moving flat plate and the single battery cell to move upward and away from the vertical frame through the robotic arm;

[0030] Step S2: When the sliding long block of the moving flat plate is not located in the process groove of the single battery cell, the blocking long block blocks the infrared emitter and the infrared receiver, and drives the moving flat plate and the single battery cell to rotate by 90°, so that the process groove direction of the single battery cell is perpendicular to the direction of the to-be-processed frame;

[0031] Step S3: Then move the single battery cell to the left-end placement flat plate through the robotic arm, and then drive the left-end placement flat plate and the single battery cell to move to the bottom end of the to-be-processed frame. At the same time, start the robotic arm to repeat the above operation to make the remaining two single battery cells located at the bottom end of the to-be-processed frame;

[0032] Step S4: Then drive the storage box to rotate to the horizontal state, and open one of the pushing ports. At this time, let the pushing plate push one solder strip from the opened pushing port, and then open the other pushing port to let the pushing plate push the other solder strip;

[0033] Step S5: Both ends of the two pushed solder strips are respectively located in the first placement groove and the second placement groove to limit and support the two solder strips, and then start the laser welder to weld the contact part between the single battery cell and the solder strip. After the welding is completed, let the first erection block push the three single battery cells to make the three single battery cells move away from the rack to be processed.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] 1. When the sliding long block is not located in the process groove, the blocking long block blocks the infrared emitter and the infrared receiver, and drives the moving flat plate and the single battery cell to rotate by 90°, so that the process groove direction of the single battery cell is perpendicular to the direction of the pushed solder strip. Furthermore, while detecting the process groove direction of the single battery cell, correct the process groove direction of the single battery cell to avoid incorrect welding between the single battery cell and the solder strip.

[0036] 2. The present invention first rotates the storage box to the horizontal state, and pushes the solder strip located at the bottom end of the placement chamber from the push port through the push plate. The remaining solder strips automatically move to the bottom end of the placement chamber under the action of gravity and abut against the side end of the push plate, thereby realizing the operation of continuously pushing the solder strips and improving the working efficiency of the welding operation between the single battery cell and the solder strip.

[0037] 3. The present invention first limits the single battery cell at the front end of the vertical rack, slides the connecting long block into the first vertical groove, and then aligns the moving flat plate with the single battery cell vertically, so as to facilitate the moving flat plate to detect and correct the process groove direction of the single battery cell. After that, slide the connecting long block into the second vertical groove, so that the single battery cell accurately falls onto the upper end of the placement flat plate, and the two pushed solder strips are limited and supported by the first placement groove and the second placement groove to avoid the position deviation at the contact part between the single battery cell and the solder strip. Brief Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of an IBC solar cell string optical welding device proposed by the present invention;

[0039] Figure 2 It is a front sectional view of the transfer rack of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0040] Figure 3 It is a rear sectional view of the transfer rack of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0041] Figure 4 It is a rear sectional view of the transfer rack of an IBC solar cell string optical welding device proposed by the present invention Figure 2;

[0042] Figure 5 Front cross-sectional view of the processing rack to be processed of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0043] Figure 6 Right cross-sectional view of the installation rack of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0044] Figure 7 Front view of the robotic arm and the moving plate of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0045] Figure 8 Front cross-sectional view of the storage box of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0046] Figure 9 Right cross-sectional view of the storage box of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0047] Figure 10 Right cross-sectional view of the storage box of an IBC solar cell string optical welding device proposed by the present invention Figure 2 ;

[0048] Figure 11 Top cross-sectional view of the storage box of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0049] Figure 12 Left cross-sectional view of the moving plate of an IBC solar cell string optical welding device proposed by the present invention Figure 1 ;

[0050] Figure 13 Left cross-sectional view of the sliding long block of an IBC solar cell string optical welding device when it is located in the process groove;

[0051] Figure 14 Left cross-sectional view of the sliding long block of an IBC solar cell string optical welding device when it is not located in the process groove;

[0052] Figure 15 Schematic diagram of an IBC solar cell string optical welding device proposed by the present invention when two solder strips are placed on three single solar cells for laser welding;

[0053] Figure 16Schematic diagram after the completion of laser welding for an IBC solar cell string optical welding device proposed by the present invention.

[0054] In the figure: 1, transfer frame; 2, single battery cell; 3, process groove; 4, rack to be processed; 5, conveyor belt; 6, L-shaped push plate; 7, robotic arm; 8, moving flat plate; 9, first pneumatic suction cup; 10, laser welder; 11, storage box; 12, first horizontal groove; 13, first cylinder; 14, vertical through groove; 15, installation rack; 16, three-way mover; 17, first vertical groove; 18, connection installation chamber; 19, rotating shaft; 20, drive motor; 21, connecting long block; 22, installation through groove; 23, sliding long block; 24, infrared emitter; 25, infrared receiver; 26, reset chute; 27, reset spring; 28, blocking long block; 29, second vertical groove; 30, placement flat plate; 31, second pneumatic suction cup; 32, first placement cylinder; 33, second horizontal groove; 34, second placement cylinder; 35, first erection block; 36, first placement groove; 37, third vertical groove; 38, third placement cylinder; 39, second erection block; 40, second placement groove; 41, placement chamber; 42, input port; 43, push port; 44, solder strip; 45, first push chute; 46, first push cylinder; 47, blocking cover plate; 48, second push chute; 49, second push cylinder; 50, push plate. Detailed implementation manners

[0055] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0056] Referring to Figures 1 - 16 , an IBC solar cell string optical welding device and its usage method, including a transfer frame 1 and a plurality of single battery cells 2. The single battery cell 2 is an IBC solar cell. At the same time, a plurality of process grooves 3 are provided on the back of a single battery cell 2. The process grooves 3 are processed by processes such as photolithography, and P regions and N regions are formed through the process grooves 3. At the same time, metallization contacts and grid lines are formed in the P regions and N regions through screen printing, so as to facilitate the power generation operation of a single battery cell 2. A rack to be processed 4, a conveyor belt 5 and an L-shaped push plate 6 are provided at the transfer frame 1. The rack to be processed 4 is arranged on one side of the transfer frame 1. As shown in the appendix Figure 1As shown, the transfer rack 1 is composed of a horizontally connected rack and a vertically connected rack to form a T-shaped structure. The conveyor belt 5 is installed in the horizontal rack, and the single battery piece 2 that has completed the process is conveyed into the vertical rack through the conveyor belt 5. At the same time, the rack 4 to be processed is a rack structure that runs left and right, and the L-shaped push plate 6 is slidably arranged in the vertical rack. When the single battery piece 2 is in the vertical rack, by driving the L-shaped push plate 6 to move towards the front end of the vertical rack, the horizontal end of the L-shaped push plate 6 pushes the single battery piece 2 towards the front end of the vertical rack and limits the single battery piece 2 at the front end of the vertical rack. The vertical end of the L-shaped push plate 6 moves to the connection between the horizontal rack and the vertical rack and blocks the remaining single battery pieces 2 from continuing to move from the horizontal rack to the vertical rack;

[0057] A robotic arm 7, a moving flat plate 8, a first pneumatic suction cup 9, a laser welder 10, a storage box 11, and a solder strip 44 are also arranged at the transfer rack 1. The robotic arm 7 is arranged on one side of the rack 4 to be processed. The moving flat plate 8 is arranged on the robotic arm 7, and the robotic arm 7 drives the moving flat plate 8 to move in multiple directions. Four first pneumatic suction cups 9 are arranged on a moving flat plate 8, and the four first pneumatic suction cups 9 are respectively used to adsorb the four side ends of a single battery piece 2 to connect the moving flat plate 8 with the single battery piece 2. At the same time, the laser welder 10 is arranged on the side of the rack 4 to be processed away from the robotic arm 7. Since the robotic arm 7 and the laser welder 10 are mature technical means in the field to which this application belongs, no further description will be given. The lower end of the storage box 11 is rotatably installed at one end of the rack 4 to be processed away from the transfer rack 1, and a fixed motor is built in at this end to drive the storage box 11 to rotate. Multiple solder strips 44 are placed in the inner cavity of a storage box 11. As shown in the appendix Figure 1 As shown, when the storage box 11 rotates to a horizontal state, the two solder strips 44 pushed by the storage box 11 run left and right;

[0058] Preferably, a detection mechanism is also arranged at the transfer rack 1. The detection mechanism is arranged at the transfer rack 1 and the moving flat plate 8, and the detection mechanism is used to detect whether the orientation of the process groove 3 of the single battery piece 2 at the front end of the vertical rack is perpendicular to the orientation of the rack 4 to be processed. If the two are parallel, rotate the single battery piece 2 by 90° to correct the orientation of the process groove 3; a placement mechanism is arranged at the rack 4 to be processed, and the placement mechanism is used to place three single battery pieces 2 at the same time for subsequent welding of the three single battery pieces 2 and two solder strips 44 to form a battery string, and a battery string performs power generation operations based on three single battery pieces 2; a pushing mechanism is arranged at the storage box 11, and the pushing mechanism is used to push two solder strips 44 so that they fall onto the upper ends of the above three single battery pieces 2.

[0059] And as shown in the appendix Figure 2 and appendix Figure 3As shown in the figure, a first transverse groove 12 is formed in the side wall of the vertical frame. The L-shaped push plate 6 is slidably sleeved at the first transverse groove 12. A first air cylinder 13 is fixedly installed on the rear inner wall of the vertical frame, and the output end of the first air cylinder 13 is fixedly connected to the L-shaped push plate 6. A vertical through groove 14 is formed through the vertical frame at one side of the first air cylinder 13. When the single battery sheet 2 is moved from the horizontal frame to the vertical frame, the transverse end of the L-shaped push plate 6 moves to the rear end of the vertical frame. At the same time, the vertical end of the L-shaped push plate 6 moves away from the connection between the horizontal frame and the vertical frame through the vertical through groove 14 to open the connection between the horizontal frame and the vertical frame.

[0060] Preferably, an installation frame 15 is arranged on one side of the processing rack 4 away from the robotic arm 7. A three-way mover 16 is installed on the installation frame 15. As shown in the attached Figure 1 and attached Figure 6 figure, the three-way mover 16 includes an X-axis slide rail, an X-axis air cylinder, a Y-axis slide rail, a Y-axis air cylinder, a Z-axis slide rail and a Z-axis air cylinder. The X-axis slide rail is arranged on the installation frame 15. At the same time, the connected X-axis air cylinder and Y-axis slide rail are installed on the X-axis slide rail, and the connected Y-axis air cylinder and Z-axis slide rail are installed on the Y-axis slide rail. Finally, the connected Z-axis air cylinder and the laser welder 10 are installed on the Z-axis slide rail. Then, the laser welder 10 is driven by the three-way mover 16 to move in the X, Y, and Z axes, so as to facilitate the welding operation of the laser welder 10.

[0061] Preferably, the detection mechanism includes a first vertical groove 17, a connection installation chamber 18, a rotating shaft 19 and a driving motor 20. As shown in the attached Figure 3 figure, three of the first vertical grooves 17 are respectively formed in the front three side walls of the vertical frame, and the remaining first vertical groove 17 is formed at one end of the L-shaped push plate 6 close to the front end of the vertical frame. The connection installation chamber 18 is installed on the robotic arm 7. The moving flat plate 8 is rotatably connected to the connection installation chamber 18 through the rotating shaft 19. The driving motor 20 is fixedly installed in the inner cavity of the connection installation chamber 18, and the output end of the driving motor 20 is fixedly connected to the rotating shaft 19 to drive the moving flat plate 8 to rotate through the driving motor 20.

[0062] The detection mechanism further includes a connection long block 21, an installation through groove 22, a sliding long block 23, an infrared emitter 24 and an infrared receiver 25. Four connection long blocks 21 are integrally formed at the four side walls of a moving flat plate 8 respectively. Four first pneumatic suction cups 9 are respectively fixedly connected to the lower ends of the four connection long blocks 21. As shown in the attached Figure 3 and attached Figure 4As shown, when the battery single piece 2 is limited at the front end of the vertical frame by the L-shaped pusher plate 6, the four first vertical grooves 17 are close to the four side ends of the battery single piece 2, so that it is convenient for the moving flat plate 8 to be aligned with the battery single piece 2 up and down along the four first vertical grooves 17, and the battery single piece 2 is adsorbed by the four first pneumatic suction cups 9, so that the moving flat plate 8 and the battery single piece 2 move together. And an installation through groove 22 is opened at the lower middle end of a moving flat plate 8, as shown in the attached Figure 1 , the attached Figure 4 and the attached Figure 7 As shown, multiple groups of sliding long blocks 23 are integrally formed on both sides of an installation through groove 22 in a symmetrical manner, and two sliding long blocks 23 are in a group. At the same time, the initial direction of multiple groups of sliding long blocks 23 is the front-back direction. And an infrared emitter 24 and an infrared receiver 25 are respectively fixedly installed at the opposite ends of a group of sliding long blocks 23, and the infrared receiver 25 is electrically connected to the drive motor 20;

[0063] The detection mechanism further includes a reset sliding groove 26, a reset spring 27 and a blocking long block 28. A reset sliding groove 26 is opened at the side wall of an installation through groove 22. A blocking long block 28 is slidably sleeved in a reset sliding groove 26. And as shown in the attached Figure 12 As shown, when the blocking long block 28 is in the initial state, the lower end of the blocking long block 28 is located below multiple groups of sliding long blocks 23. A reset spring 27 is welded between the inner wall of a reset sliding groove 26 and a blocking long block 28, and the reset spring 27 restores the initial state of the blocking long block 28 through elastic force.

[0064] It should be particularly noted that, as shown in the attached Figure 13 As shown, when the process groove 3 of the battery single piece 2 located at the front end of the vertical frame is in the front-back direction, the moving flat plate 8 is driven to move downward, and the blocking long block 28 first abuts against the upper end of the battery single piece 2, and multiple groups of sliding long blocks 23 continue to slide into multiple process grooves 3, so that the blocking long block 28 is located at the upper end of the installation through groove 22, so as to release the blocking of the infrared emitter 24 and the infrared receiver 25, and enable the infrared receiver 25 to receive the infrared signal of the infrared emitter 24, indicating that the process groove 3 of the battery single piece 2 is perpendicular to the walking direction of the pushed solder strip 44. Furthermore, the drive motor 20 is not started, and the battery single piece 2 is directly moved into the processing frame 4;

[0065] When the process groove 3 of the battery single piece 2 at the front end of the vertical rack has a left - right direction, the driving moving plate 8 is driven to move downward. At this time, since the directions of the multiple blocking long blocks 28 are perpendicular to the directions of the multiple process grooves 3, the multiple blocking long blocks 28 cannot slide into the multiple process grooves 3. At the same time, the width of the blocking long block 28 is greater than the width of the process groove 3. As a result, the multiple process grooves 3 and the blocking long blocks 28 are both abutted against the upper end of the battery single piece 2, and the blocking long blocks 28 block the infrared emitter 24 and the infrared receiver 25, so that the infrared receiver 25 cannot receive the infrared signal from the infrared emitter 24, indicating that the direction of the process groove 3 of the battery single piece 2 is parallel to the direction of the pushed solder strip 44. The infrared receiver 25 transmits the start signal to the driving motor 20. Under the limitation of the four first vertical grooves 17, the four connecting long blocks 21 only move vertically. On the premise that the four first pneumatic suction cups 9 adsorb the battery single piece 2, and the battery single piece 2 is taken away from the vertical rack, the driving motor 20 drives the moving plate 8 and the battery single piece 2 to rotate by 90°, so that the direction of the process groove 3 of the battery single piece 2 is perpendicular to the direction of the to - be - processed rack 4, and then the battery single piece 2 is moved into the to - be - processed rack 4;

[0066] The placing mechanism includes a second vertical groove 29, a second horizontal groove 33, a third vertical groove 37, a placing plate 30, a second pneumatic suction cup 31 and a first placing cylinder 32. As shown in the attached Figure 5 and attached Figure 15 figures, three second vertical grooves 29, one second horizontal groove 33 and one third vertical groove 37 are opened in a side wall of a to - be - processed rack 4 in a communicating manner. Three placing plates 30 are respectively slidably sleeved in the three second vertical grooves 29. A set of second pneumatic suction cups 31 are fixedly installed at the upper end of a placing plate 30. When the robotic arm 7 moves the battery single piece 2 to the to - be - processed rack 4 through the first pneumatic suction cup 9, through the limitation of the second vertical groove 29, the connecting long block 21 only moves vertically, so that the battery single piece 2 accurately falls onto the second pneumatic suction cup 31, and the second pneumatic suction cup 31 adsorbs the battery single piece 2. And the three first placing cylinders 32 are fixedly connected to the inner bottom end of a to - be - processed rack 4 in a straight - line equidistant manner, and the output ends of the three first placing cylinders 32 are respectively fixedly connected to the lower ends of the three placing plates 30, so as to drive the placing plate 30 to move vertically through the first placing cylinder 32.

[0067] Preferably, the placing mechanism further includes a second placing cylinder 34, a first erection block 35 and a first placing groove 36. A second placing cylinder 34 is fixedly connected in a second horizontal groove 33. A first erection block 35 is slidably sleeved in a second horizontal groove 33, and the output end of the second placing cylinder 34 is fixedly connected to the first erection block 35, so as to drive the first erection block 35 to move horizontally through the second placing cylinder 34. Two first placing grooves 36 are opened at the upper end of a first erection block 35;

[0068] Preferably, the placing mechanism further includes a third placing cylinder 38, a second erection block 39, and a second placing groove 40. A third placing cylinder 38 is fixedly installed in a third vertical groove 37. A second erection block 39 is slidably sleeved at a third vertical groove 37, and the output end of the third placing cylinder 38 is fixedly connected to the second erection block 39 to drive the second erection block 39 to move vertically through the third placing cylinder 38. Two second placing grooves 40 are opened at the upper end of a second erection block 39. When the three battery single pieces 2 are located on the three placing plates 30, the three battery single pieces 2 are driven to be located at the bottom end of the to-be-processed rack 4 for subsequent pushing of the two welding strip 44.

[0069] The pushing mechanism includes a placing chamber 41, an input port 42, and a pushing port 43. As shown in the appendix Figure 11 Two placing chambers 41 are symmetrically installed in the inner cavity of a storage box 11, and the bottom ends of the two placing chambers 41 are communicated with the bottom end of the inner cavity of a storage box 11. Two input ports 42 are penetrated and opened at one end of a storage box 11. An input cover plate can be rotatably arranged at the upper end of the input port 43 to open and close the input port 42, and two pushing ports 42 are penetrated and opened at the other end of a storage box 11.

[0070] The pushing mechanism further includes a first pushing chute 45, a first pushing cylinder 46, and a blocking cover plate 47. Two first pushing chutes 45 are symmetrically opened in the inner cavity of a storage box 11 at the two pushing ports 43. Two first pushing cylinders 46 are respectively fixedly installed in the two first pushing chutes 45. Two blocking cover plates 47 are respectively slidably sleeved at the two first pushing chutes 45, and the output ends of the two first pushing cylinders 46 are respectively fixedly connected to the two blocking cover plates 47, and the blocking cover plates 47 are moved away from or close to the pushing ports 43 through the first pushing cylinders 46 to open and close the pushing ports 43;

[0071] Preferably, the pushing mechanism further includes a second pushing chute 48, a second pushing cylinder 49, and a pushing plate 50. A group of second pushing chutes 48 are opened in the inner cavity of a storage box 11 away from the two first pushing chutes 45. A group of second pushing cylinders 49 are fixedly connected in a group of second pushing chutes 48. A pushing plate 50 is slidably sleeved at a group of second pushing chutes 48, and the output end of a group of second pushing cylinders 49 is fixedly connected to a pushing plate 50. And as shown in the appendix Figure 11As shown, after the solder strip 44 fills the placement chamber 41, the two ends of the solder strip 44 at the bottom end of the placement chamber 41 are respectively abutted against the blocking cover plate 47 and the pushing plate 50. Therefore, when the storage box 11 is in the vertical state, the free movement of the solder strip 44 is blocked. When the storage box 11 is in the horizontal state, first drive the blocking cover plate 47 to open the pushing port 43, and push the solder strip 44 at the bottom end of the placement chamber 41 through the pushing plate 50. Then, the pushing plate 50 moves to the position between the two placement chambers 41, and the remaining solder strip 44 in the placement chamber 41 moves downward to the bottom end of the placement chamber 41 under the action of gravity, and the solder strip 44 at the bottom end of the placement chamber 41 abuts against the pushing plate again to facilitate the continuous pushing of the solder strip 44.

[0072] Specifically, as shown in the appendix Figure 15 When the three battery cells 2 are located at the bottom end of the processing rack 4, the bottom of the first placement groove 36 and the bottom of the second placement groove 40 are flush with the upper ends of the three battery cells 2, so that the two ends of the two solder strips 44 to be pushed can slide into the first placement groove 36 and the second placement groove 40, and limit and support the two solder strips 44; and as shown in the appendix Figure 16 When the welding is completed, lower the second erection block 39 until the upper end of the second erection block 39 is flush with the lower end of the battery cell 2, and drive the first erection block 35 to push the three welded battery cells 2 to the right, so that the three battery cells 2 move along the upper ends of the three groups of second pneumatic suction cups 31 and the second erection block 39. At the same time, a conveyor belt can be set at the right end of the processing rack 4 to move the three battery cells 2 to the conveyor belt, and then the three battery cells 2 are conveyed to the packaging station through the conveyor belt for packaging treatment.

[0073] The functional principle of the present invention can be elaborated through the following operation methods:

[0074] First, place the battery cell 2 that has completed the process processing on the conveyor belt 5, and under the transmission of the conveyor belt 5, the battery cell 2 moves from the horizontal rack of the transfer rack 1 to the vertical rack, and start the first cylinder 13, so that the first cylinder 13 pushes the battery cell 2 to the front end of the vertical rack through the L-shaped push plate 6, as shown in the appendix Figure 3 and the appendix Figure 4 As shown, the battery cell 2 is limited at the front end of the vertical rack by the L-shaped push plate 6. Then start the robotic arm 7, so that the robotic arm 7 drives the moving flat plate 8 to move to the front end of the vertical rack, and make the four connecting long blocks 21 of the moving flat plate 8 slide into the four first vertical grooves 17, so that the moving flat plate 8 is aligned with the battery cell 2 up and down;

[0075] And drive the moving flat plate 8 to move downward along the four first vertical grooves 17 until the four first pneumatic suction cups 9 of the moving flat plate 8 are aligned with the four side ends of the single battery slice 2. Start the four first pneumatic suction cups 9 to adsorb the single battery slice 2, and then drive the moving flat plate 8 and the single battery slice 2 to move upward and away from the vertical rack by the robotic arm 7. If the sliding long block 23 of the moving flat plate 8 is not located in the process groove 3 of the single battery slice 2 at this time, as shown in the appendix Figure 14 As shown, make the lower end of the blocking long block 28 flush with the lower end of the sliding long block 23, and let the blocking long block 28 block the infrared emitter 24 and the infrared receiver 25 to indicate that the direction of the process groove 3 of the single battery slice 2 is parallel to the direction of the to-be-processed rack 4. The infrared receiver 25 transmits the start signal to the drive motor 20, and let the drive motor 20 drive the moving flat plate 8 and the single battery slice 2 to rotate by 90° through the rotating shaft 19, so that the direction of the process groove 3 of the single battery slice 2 is perpendicular to the direction of the to-be-processed rack 4;

[0076] And as shown in the appendix Figure 5 As shown, drive the single battery slice 2 to move to the left end of the to-be-processed rack 4 by the robotic arm 7, and make the connecting long block 21 of the moving flat plate 8 slide downward into the second left vertical groove 29, so that the lower end of the single battery slice 2 contacts the second left pneumatic suction cup 31. At this time, start the second left pneumatic suction cup 31 and close the first pneumatic suction cup 9, and then start the first left placing cylinder 32 to make the left placing flat plate 30 and the single battery slice 2 move downward and be located at the bottom of the to-be-processed rack 4, and start the robotic arm 7 to repeat the above operations to make the remaining two single battery slices 2 be located at the bottom of the to-be-processed rack 4;

[0077] Then drive the storage box 11 to rotate towards the to-be-processed rack 4 until the storage box 11 is in a horizontal state, as shown in the appendix Figure 9 and the appendix Figure 11 As shown, and start one of the first pushing cylinders 46 to make one of the blocking cover plates 47 move away and open one of the pushing ports 43. At this time, start the second pushing cylinder 49 to make the pushing plate 50 push one of the solder strip 44 from the opened pushing port 43, and then make the other blocking cover plate 47 move away and open the other pushing port 43 to let the pushing plate 50 push the other solder strip 44, and make the storage box 11 rotate away from the to-be-processed rack 4 so that the storage box 11 is in a vertical state;

[0078] And as shown in the appendix Figure 15 As shown, the two pushed solder strips 44 fall onto the three single battery slices 2, and at the same time, both ends of the two solder strips 44 are respectively located in the first placing groove 36 and the second placing groove 40 to limit and support the two solder strips 44, and start the three-way mover 16 to make the laser welder 10 move to the contact position between the single battery slice 2 and the solder strip 44, and then start the laser welder 10 to weld the contact position;

[0079] After the welding is completed, as shown in the attached Figure 16 figure, start the third placement cylinder 38, and let the third placement cylinder 38 drive the second erection block 39 to move downward until the upper end of the second erection block 39 is flush with the lower end of the single battery 2. At this time, close the second pneumatic suction cup 31 and start the second placement cylinder 34, and let the second placement cylinder 34 drive the first erection block 35 to move to the right, so that the first erection block 35 pushes the three single batteries 2 that have completed welding to the right until the three single batteries 2 move to the conveyor belt located at the right end of the to-be-processed rack 4, so as to convey the three single batteries 2 to the packaging station for packaging treatment.

[0080] As mentioned above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. An IBC solar cell string welding device, comprising a transfer rack (1) and a plurality of battery cells (2), wherein one end of the battery cell (2) is provided with a plurality of process slots (3), characterized in that: The transfer frame (1) is provided with: A rack to be processed (4), a conveyor belt (5) and an L-shaped push plate (6), wherein the rack to be processed (4) is arranged on one side of a transfer rack (1), the transfer rack (1) is formed into a T-shape by a connected transverse rack and a vertical rack, the conveyor belt (5) is installed in the transverse rack, the rack to be processed (4) is a rack structure running left and right, and the L-shaped push plate (6) is slidably arranged in the vertical rack; It also includes a mechanical arm (7), a movable plate (8), a first pneumatic suction cup (9), a laser welder (10), a storage box (11) and a welding strip (44), wherein the mechanical arm (7) is arranged on one side of the rack to be processed (4), the movable plate (8) is arranged on the mechanical arm (7), four of the first pneumatic suction cups (9) are arranged on one movable plate (8), and the four first pneumatic suction cups (9) are respectively used to absorb four side ends of a battery cell (2), the laser welder (10) is arranged on a side of the rack to be processed (4) away from the mechanical arm (7), the lower end of the storage box (11) is rotatably mounted on one end of the rack to be processed (4) away from the transfer rack (1), and a plurality of welding strips (44) are placed in the inner cavity of one storage box (11); A detection mechanism, the detection mechanism being arranged at the transfer rack (1) and the mobile plate (8), and being used to detect whether the direction of the process groove (3) of the battery single chip (2) located at the front end of the vertical rack is in a vertical state with the direction of the rack to be processed (4); a placement mechanism, the placement mechanism being arranged at the rack to be processed (4), and being used to place three battery single chips (2) at the same time; a pushing mechanism, the pushing mechanism being arranged at the storage box (11), and being used to push two welding strips (44), the detection mechanism comprising a first vertical groove (17), a connection installation chamber (18), a rotating shaft (19), and a driving motor (20), the mobile plate (8) being connected to the connection installation chamber (1) via the rotating shaft (19). 8) rotatably connected, the detection mechanism also includes a connecting long block (21), a mounting through slot (22), a sliding long block (23), an infrared transmitter (24) and an infrared receiver (25), and two sliding long blocks (23) form a group, a group of sliding long blocks (23) is movably mounted in a process slot (3), an infrared transmitter (24) and an infrared receiver (25) are respectively fixedly mounted at opposite ends of a group of sliding long blocks (23), and the infrared receiver (25) is electrically connected to the drive motor (20), and the placement mechanism includes a second vertical slot (29), a second transverse slot (33), a third vertical slot (37), a placement plate (30), a second pneumatic suction cup (31) and a first placement cylinder (3 2), a group of the second pneumatic suction cups (31) are fixedly installed at the upper end of a placement plate (30), three of the first placement cylinders (32) are fixedly connected to the bottom end of a to-be-processed frame (4) in a straight line and equidistant manner, and the output ends of the three first placement cylinders (32) are respectively fixedly connected to the lower ends of the three placement plates (30), the pushing mechanism comprises a placement chamber (41), an input port (42) and a pushing port (43), two of the input ports (42) are opened through one end of a storage box (11), and two of the pushing ports (43) are opened through the other end of a storage box (11), the pushing mechanism also comprises a second pushing chute (48), a second pushing cylinder (49) and a pushing plate (50), a A group of the second pushing grooves (48) are opened in the inner cavity of a storage box (11) away from the two first pushing grooves (45), a group of the second pushing cylinders (49) are fixedly connected to the group of the second pushing grooves (48), a pushing plate (50) is slidably mounted on the group of the second pushing grooves (48), and an output end of a group of the second pushing cylinders (49) is fixedly connected to a pushing plate (50), and the pushing mechanism also includes a first pushing groove (45), a first pushing cylinder (46) and a blocking cover plate (47), the two blocking cover plates (47) are respectively slidably mounted on the two first pushing grooves (45), and the output ends of the two first pushing cylinders (46) are respectively fixedly connected to the two blocking cover plates (47).

2. The IBC solar cell string light welding equipment according to claim 1, characterized in that: A first transverse groove (12) is provided on the side wall of the vertical frame, the L-shaped push plate (6) is slidably mounted on the first transverse groove (12), a first cylinder (13) is fixedly mounted on the rear inner wall of the vertical frame, and an output end of the first cylinder (13) is fixedly connected to the L-shaped push plate (6), and a vertical through groove (14) is provided through the vertical frame at one side of the first cylinder (13).

3. The IBC solar cell string light welding equipment according to claim 2, characterized in that: A mounting frame (15) is provided on a side of the machine frame to be processed (4) away from the mechanical arm (7), a three-way mover (16) is installed on the mounting frame (15), and the laser welder (10) is arranged at the three-way mover (16).

4. The IBC solar cell string light welding equipment according to claim 3, characterized in that: Three of the first vertical grooves (17) are respectively opened at three side walls of the front end of the vertical frame, and the remaining first vertical groove (17) is opened at one end of the L-shaped push plate (6) close to the front end of the vertical frame. The connection installation chamber (18) is installed on the robot arm (7), the drive motor (20) is fixedly installed in the inner cavity of the connection installation chamber (18), and the output end of the drive motor (20) is fixedly connected to the rotating shaft (19).

5. The IBC solar cell string light welding equipment according to claim 4, characterized in that: The four connecting long blocks (21) are respectively integrally formed on four side walls of a movable plate (8); the four first pneumatic suction cups (9) are respectively fixedly connected to the lower ends of the four connecting long blocks (21); a mounting through slot (22) is provided at the lower middle end of a movable plate (8); and a plurality of groups of sliding long blocks (23) are integrally formed on both sides of a mounting through slot (22) in a symmetrical manner; It also includes a reset slide groove (26), a reset spring (27) and a blocking long block (28), wherein one of the reset slide grooves (26) is opened at a side wall of a mounting through groove (22), one of the blocking long blocks (28) is slidably mounted in one of the reset slide grooves (26), and one of the reset springs (27) is welded between an inner wall of a reset slide groove (26) and one of the blocking long blocks (28).

6. The IBC solar cell string light welding equipment according to claim 5, characterized in that: Three of the second vertical grooves (29), one of the second transverse grooves (33) and one of the third vertical grooves (37) are connected and arranged on a side wall of a machine frame (4) to be processed, and the three placement plates (30) are slidably mounted on the three second vertical grooves (29) respectively.

7. The IBC solar cell string light welding equipment according to claim 6, characterized in that: The placement mechanism also includes: A second placement cylinder (34), a first erection block (35) and a first placement groove (36), wherein one of the second placement cylinders (34) is fixedly connected to one of the second transverse grooves (33), one of the first erection blocks (35) is slidably sleeved in one of the second transverse grooves (33), and an output end of the second placement cylinder (34) is fixedly connected to the first erection block (35), and two of the first placement grooves (36) are opened at the upper end of one of the first erection blocks (35); It also includes a third placement cylinder (38), a second erection block (39) and a second placement slot (40), wherein one of the third placement cylinders (38) is fixedly installed in a third vertical slot (37), one of the second erection blocks (39) is slidably mounted in a third vertical slot (37), and the output end of the third placement cylinder (38) is fixedly connected to the second erection block (39), and two of the second placement slots (40) are opened at the upper end of a second erection block (39).

8. The IBC solar cell string light welding equipment according to claim 7, characterized in that: The two placement chambers (41) are symmetrically installed in the inner cavity of a storage box (11).

9. The IBC solar cell string light welding equipment according to claim 8, characterized in that: The two first pushing chutes (45) are symmetrically opened in the inner cavity of a storage box (11) at two pushing ports (43), and the two first pushing cylinders (46) are respectively fixedly installed in the two first pushing chutes (45).

10. A method for using the IBC solar cell string light welding device as claimed in claim 9, characterized in that: The method of use comprises the following steps: Step S1: first, a battery cell (2) is limited at the front end of the vertical frame, and then four connecting long blocks (21) are slid into four first vertical slots (17) by a mechanical arm (7) to align the movable plate (8) and the battery cell (2) vertically, and four first pneumatic suction cups (9) are activated to absorb the battery cell (2), and then the movable plate (8) and the battery cell (2) are driven by the mechanical arm (7) to move upward and away from the vertical frame; Step S2: When the sliding long block (23) of the movable plate (8) is not located in the process groove (3) of the battery cell (2), the blocking long block (28) blocks the infrared transmitter (24) and the infrared receiver (25), and drives the movable plate (8) and the battery cell (2) to rotate 90 degrees, so that the direction of the process groove (3) of the battery cell (2) is perpendicular to the direction of the rack (4) to be processed; Step S3: the battery cell (2) is moved to the left end placement plate (30) by the robot arm (7), and the left end placement plate (30) and the battery cell (2) are driven to move to the bottom end of the rack (4) to be processed, and the robot arm (7) is started to repeat the above operation, so that the remaining two battery cells (2) are located at the bottom end of the rack (4) to be processed; Step S4: Then, the storage box (11) is driven to rotate to a horizontal state, and one of the push openings (43) is opened, and the push plate (50) is allowed to push one of the solder strips (44) from the opened push opening (43), and then the other push opening (43) is opened to allow the push plate (50) to push the other solder strip (44); Step S5: The two ends of the two pushed welding strips (44) are respectively located in the first placement groove (36) and the second placement groove (40) to provide position-limiting support for the two welding strips (44), and the laser welder (10) is started to weld the contact between the battery cell (2) and the welding strip (44), and after the welding is completed, the first mounting block (35) pushes the three battery cells (2) to keep the three battery cells (2) away from the rack (4) to be processed.

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