IBC solar cell optical crosstalk welding equipment and use method

Abstract

The invention relates to the technical field of IBC solar cell optical welding, in particular to IBC solar cell optical crosstalk welding equipment and a using method.The IBC solar cell optical crosstalk welding equipment comprises a transfer rack, the transfer rack is provided with a to-be-machined rack, a conveying belt and an L-shaped push plate, and the to-be-machined rack is arranged on one side of the transfer rack; the transfer rack is in a T shape formed by a transverse rack and a vertical rack which are communicated with each other, the conveying belt is installed in the transverse rack, the rack to be machined is of a rack structure in the left-right direction, and the L-shaped push plate is arranged in the vertical rack in a sliding mode. 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 flat plate and the single battery piece to rotate by 90 degrees, so that the direction of the process groove of the single battery piece is perpendicular to the direction of the pushed welding strip, and the direction of the process groove of the single battery piece is detected while the direction of the process groove of the single battery piece is detected. And the trend of the process groove of the single battery piece is corrected, so that wrong welding of the single battery piece and the welding strip is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of IBC solar cell optical welding, and in particular to an IBC solar cell optical string welding device and a use method thereof. Background Art

[0002] IBC solar cells appeared in the 1970s and are the earliest back-junction cells studied. They were initially used mainly in concentrating systems. The cell uses n-type substrate material and a thermal oxide film is covered on the front and back surfaces to reduce surface recombination. Photolithography technology is used to form P and N regions with finger-like cross-arrangement.

[0003] The existing technology mostly adopts a welding machine for solar panel electrode welding, such as the one disclosed in the announcement number CN118559257B. The technology includes a frame, a welding mechanism, and a support mechanism. The welding mechanism includes a connecting guide column and a welding host. The welding host is fixedly installed in the middle of the outer side of the support frame. The two ends of the connecting guide column are respectively installed with a hydraulic rod and a welding gun. The hydraulic rod is fixedly installed on the side of the top of the support frame. The welding machine for solar panel electrode welding achieves the effect of stable welding, the structure runs smoothly, reduces the influence of external force and vibration, and makes the welding accurate. However, the above technology still has problems in use due to structural limitations: The back of the existing IBC solar cell is processed into a groove body through photolithography and other processes, and the P region and N region are formed through the groove body for power generation. When multiple IBC solar cells are connected in series through welding ribbons, the welding ribbons need to be in contact with the P region and N region of the multiple IBC solar cells. The P region and N region are formed in the concave and convex areas on both sides of the groove body. Therefore, the direction of the welding ribbons and the direction of the groove bodies of the multiple IBC solar cells need to be perpendicular to each other and laser welding is performed. However, since there are many steps in the process from the processing of IBC solar cells to the transportation to the welding station, the probability of the IBC solar cell being offset is increased. At this time, if the direction of the groove body of the IBC solar cell is parallel to the direction of the welding ribbon, the above technology cannot detect and correct the IBC solar cell in this state, which can easily cause the IBC solar cell and the welding ribbon to be incorrectly welded. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the orientation of the IBC solar cell trough and the orientation of the welding strip in a parallel state cannot be detected and corrected, and an IBC solar cell string light welding device and a method of use are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An IBC solar cell string light welding device comprises a transfer rack and a plurality of battery cells, one end of each battery cell is provided with a plurality of process slots, and the transfer rack is provided with: A rack to be processed, a conveyor belt and an L-shaped push plate, wherein 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 left-right rack structure, and the L-shaped push plate is slidably arranged in the vertical rack; A mechanical arm, a mobile plate, a first pneumatic suction cup, a laser welder, a storage box and a welding strip, wherein the mechanical arm is arranged at one side of a rack to be processed, the mobile plate is arranged on the mechanical arm, four of the first pneumatic suction cups are arranged on one mobile plate, and the four first pneumatic suction cups are respectively used to adsorb four side ends of a battery single sheet, the laser welder is arranged at a side of the rack to be processed away from the mechanical arm, the lower end of the storage box is rotatably installed at one end of the rack to be processed away from the transfer rack, and a plurality of welding strips are placed in an inner cavity of a storage box; A detection mechanism, which is arranged at the transfer rack and the mobile flat plate, and is used to detect whether the direction of the process groove of the battery cell located at the front end of the vertical rack is in a vertical state with the direction of the rack to be processed; a placement mechanism, which is arranged at the rack to be processed, and is used to place three battery cells at the same time; a pushing mechanism, which is arranged at the storage box, and is used to push two welding strips.

[0006] Preferably, a first transverse groove is provided on the side wall of the vertical frame, the L-shaped push plate is slidably mounted on the first transverse 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, and a vertical through groove is provided on one side of the vertical frame located on the first cylinder.

[0007] Preferably, a mounting frame is provided on the side of the frame to be processed away from the robot arm, a three-way mover is installed on the mounting frame, and the laser welder is arranged at the three-way mover.

[0008] Preferably, the detection mechanism comprises: A first vertical slot, a connecting and installing chamber, a rotating shaft and a driving motor, wherein three of the first vertical slots are respectively opened at the three side walls of the front end of the vertical frame, and the remaining first vertical slot is opened at one end of the L-shaped push plate close to the front end of the vertical frame, the connecting and installing chamber is installed on the robot arm, the movable plate is rotatably connected to the connecting and installing chamber through the rotating shaft, the driving motor is fixedly installed in the inner cavity of the connecting and installing chamber, and the output end of the driving motor is fixedly connected to the rotating shaft.

[0009] Preferably, the detection mechanism further comprises: A connecting long block, a mounting slot, a sliding long block, an infrared transmitter and an infrared receiver, wherein four of the connecting long blocks are respectively integrally formed at four side walls of a movable plate, four of the first pneumatic suction cups are respectively fixedly connected to the lower ends of the four connecting long blocks, one of the mounting slots is opened at the lower middle end of a movable plate, a plurality of groups of the sliding long blocks are symmetrically integrally formed at both sides of a mounting slot, and two sliding long blocks form a group, one group of the sliding long blocks is movably sleeved in a process slot, one of the infrared transmitters and one of the infrared receivers are respectively fixedly installed at opposite ends of a group of sliding long blocks, and the infrared receiver is electrically connected to a driving motor; A reset slide groove, a reset spring and a blocking long block, wherein a reset slide groove is opened at a side wall of a mounting slot, a blocking long block is slidably sleeved in a reset slide groove, and a reset spring is welded between an inner wall of a reset slide groove and a blocking long block.

[0010] Preferably, the placement mechanism comprises: A second vertical groove, a second transverse groove, a third vertical groove, a placement plate, a second pneumatic suction cup and a first placement cylinder, three of the second vertical grooves, one of the second transverse grooves and one third vertical groove are arranged in a connected manner on a side wall of a frame to be processed, the three placement plates are slidably mounted on the three second vertical grooves respectively, a group of the second pneumatic suction cups is fixedly installed on the upper end of a placement plate, the three first placement cylinders are fixedly connected to the bottom end of a frame to be processed in a straight line equidistant manner, and the output ends of the three first placement cylinders are fixedly connected to the lower ends of the three placement plates respectively.

[0011] Preferably, the placement mechanism further comprises: A second placement cylinder, a first erection block and a first placement slot, wherein one of the second placement cylinders is fixedly connected to one of the second transverse slots, one of the first erection blocks is slidably sleeved in one of the second transverse slots, and an output end of the second placement cylinder is fixedly connected to the first erection block, and two of the first placement slots are opened at the upper end of one of the first erection blocks; A third placing cylinder, a second mounting block and a second placing groove, wherein one of the third placing cylinders is fixedly installed in a third vertical groove, one of the second mounting blocks is slidably mounted in a third vertical groove, and the output end of the third placing cylinder is fixedly connected to the second mounting block, and two of the second placing grooves are opened at the upper end of a second mounting block.

[0012] Preferably, the pushing mechanism comprises: A placement chamber, an input port and a push port, wherein the two placement chambers are symmetrically installed in an inner cavity of a storage box, the two input ports are through-opened at one end of a storage box, and the two push ports are through-opened at the other end of a storage box.

[0013] Preferably, the pushing mechanism further includes: A first push chute, a first push cylinder and a blocking cover plate, wherein two of the first push chute are symmetrically arranged in an inner cavity of a storage box and located at two push ports, two of the first push cylinders are respectively fixedly installed in the two first push chute, two of the blocking cover plates are respectively slidably sleeved on the two first push chute, and the output ends of the two first push cylinders are respectively fixedly connected to the two blocking cover plates; A second pushing chute, a second pushing cylinder and a pushing plate, a group of the second pushing chute is opened in a storage box cavity away from the two first pushing chute, a group of the second pushing cylinder is fixedly connected to a group of second pushing chute, a pushing plate is slidably mounted on a group of second pushing chute, and a group of second pushing cylinder output ends are fixedly connected to a pushing plate.

[0014] A method for using an IBC solar cell string light welding device comprises the following steps: Step S1: first limit a battery cell at the front end of the vertical rack, then slide four connecting long blocks into four first vertical slots by a mechanical arm, so that the movable plate and the battery cell are aligned vertically, and four first pneumatic suction cups are activated to absorb the battery cell, and then the movable plate and the battery cell are driven by the mechanical arm to move upward and away from the vertical rack; Step S2: When the sliding long block of the movable plate is not located at the process slot of the battery single wafer, the blocking long block blocks the infrared transmitter and the infrared receiver, and drives the movable plate and the battery single wafer to rotate 90°, so that the direction of the process slot of the battery single wafer is perpendicular to the direction of the rack to be processed; Step S3: The battery cell is moved to the left end placement plate by the robot arm, and then the left end placement plate and the battery cell are driven to move to the bottom end of the rack to be processed, and the robot arm is started to repeat the above operation, so that the remaining two battery cells are located at the bottom end of the rack to be processed; Step S4: Then, the storage box is driven to rotate to a horizontal state, and one of the push ports is opened, and the push plate is allowed to push one of the solder strips from the opened push port, and then the other push port is opened to allow the push plate to push the other solder strip; Step S5: The two ends of the two pushed welding strips are respectively located in the first placement groove and the second placement groove to limit the two welding strips, and the laser welder is started to weld the contact between the battery cell and the welding strips. After the welding is completed, the first mounting block pushes the three battery cells to keep the three battery cells away from the frame to be processed.

[0015] Compared with the prior art, the present invention has the following advantages: 1. 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 process groove of the battery cell is perpendicular to the direction of the pushed welding strip, and then the direction of the process groove of the battery cell is detected while correcting the direction of the process groove of the battery cell to avoid incorrect welding between the battery cell and the welding strip.

[0016] 2. The present invention first rotates the storage box to a horizontal state, and pushes the welding strips at the bottom of the placement chamber from the pushing port through the pushing plate, and the remaining welding strips automatically move to the bottom of the placement chamber under the action of gravity and abut against the side end of the pushing plate, thereby realizing the uninterrupted pushing of the welding strips to improve the working efficiency of the welding operation between the battery cell and the welding strips.

[0017] 3. The present invention first limits the battery cell at the front end of the vertical frame, slides the connecting long block into the first vertical groove, and then aligns the movable plate with the battery cell up and down, so that the movable plate can detect and correct the direction of the process groove of the battery cell. Thereafter, the connecting long block is slid into the second vertical groove, so that the battery cell falls accurately to the upper end of the placement plate, and the two pushed welding strips are limited and supported by the first placement groove and the second placement groove to avoid the position of the battery cell and the welding strip from being offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an IBC solar cell string light welding device proposed by the present invention; Figure 2 A schematic diagram of a front section of a transfer frame of an IBC solar cell string welding device proposed by the present invention Figure 1 ; Figure 3 A schematic diagram of the rear section of a transfer rack for an IBC solar cell string welding device proposed by the present invention Figure 1 ; Figure 4 A schematic diagram of the rear section of a transfer rack for an IBC solar cell string welding device proposed by the present invention Figure 2 ; Figure 5 A schematic diagram of a front section of a frame to be processed for an IBC solar cell string light welding device proposed by the present invention Figure 1 ; Figure 6 A right section diagram of the mounting frame of an IBC solar cell string light welding device proposed by the present invention Figure 1 ; Figure 7 A schematic diagram of the front view of the mechanical arm and the mobile plate of the IBC solar cell string light welding equipment proposed by the present invention Figure 1 ; Figure 8 A schematic diagram of a storage box for an IBC solar cell string light welding device proposed by the present invention. Figure 1 ; Fig. 9 A right cutaway diagram of a storage box for an IBC solar cell string light welding device proposed by the present invention Figure 1 ; Fig.10 A right cutaway diagram of a storage box for an IBC solar cell string light welding device proposed by the present invention Figure 2 ; Fig.11 A schematic diagram of a storage box for an IBC solar cell string welding device proposed by the present invention. Figure 1 ; Fig.12 The left section diagram of the mobile plate of the IBC solar cell string light welding equipment proposed by the present invention Figure 1 ; Fig.13 This is a left-side cross-sectional schematic diagram of an IBC solar cell string light welding device proposed by the present invention when the sliding long block is located in the process tank; Fig.14 This is a left-side cross-sectional schematic diagram of an IBC solar cell string light welding device proposed by the present invention when the sliding long block is not located in the process tank; Fig.15 This is a schematic diagram of an IBC solar cell string light welding device proposed by the present invention, in which two welding ribbons are placed on three solar cells for laser welding; Fig.16 This is a schematic diagram of an IBC solar cell string light welding device proposed in the present invention after laser welding is completed.

[0019] In the figure: 1. Transfer rack; 2. Battery cell; 3. Processing slot; 4. Rack to be processed; 5. Conveyor belt; 6. L-shaped push plate; 7. Robotic arm; 8. Moving plate; 9. First pneumatic suction cup; 10. Laser welder; 11. Storage box; 12. First transverse slot; 13. First cylinder; 14. Vertical slot; 15. Mounting rack; 16. Three-way mover; 17. First vertical slot; 18. Connecting installation room; 19. Rotating shaft; 20. Driving motor; 21. Connecting long block; 22. Mounting slot; 23. Sliding long block; 24. Infrared transmitter; 25. Infrared receiver; 26. Reset slide; 2 7. Reset spring; 28. Blocking long block; 29. ​​Second vertical slot; 30. Placement plate; 31. Second pneumatic suction cup; 32. First placement cylinder; 33. Second horizontal slot; 34. Second placement cylinder; 35. First erection block; 36. First placement slot; 37. Third vertical slot; 38. Third placement cylinder; 39. Second erection block; 40. Second placement slot; 41. Placement chamber; 42. Inlet; 43. Push port; 44. Welding strip; 45. First push slide; 46. First push cylinder; 47. Blocking cover; 48. Second push slide; 49. Second push cylinder; 50. Push plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-Figure 16 , an IBC solar cell string light welding device and a method of use, comprising a transfer rack 1 and a plurality of battery cells 2, the battery cell 2 being an IBC solar cell, and a plurality of process grooves 3 being arranged on the back of a battery cell 2, and the process grooves 3 being processed by processes such as photolithography, and forming a P region and an N region through the process grooves 3, and forming metallized contacts and grid lines at the P region and the N region by screen printing, so that a battery cell 2 can perform power generation operations, the transfer rack 1 is provided with a rack to be processed 4, a conveyor belt 5 and an L-shaped push plate 6, the rack to be processed 4 is arranged on one side of the transfer rack 1, as shown in the attached Figure 1As shown, the transfer rack 1 is T-shaped, consisting of a connected transverse rack and a vertical rack, and the conveyor belt 5 is installed in the transverse rack, and the battery single wafer 2 that has completed the process is transported to 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 battery single wafer 2 is located in the vertical rack, the L-shaped push plate 6 is driven to move toward the front end of the vertical rack, so that the transverse end of the L-shaped push plate 6 pushes the battery single wafer 2 to move toward the front end of the vertical rack, and the battery single wafer 2 is limited at the front end of the vertical rack, and the vertical end of the L-shaped push plate 6 moves to the connecting point between the transverse rack and the vertical rack, and prevents the remaining battery single wafers 2 from continuing to move from the transverse rack to the vertical rack; The transfer rack 1 is also provided with a robot arm 7, a mobile plate 8, a first pneumatic suction cup 9, a laser welder 10, a storage box 11 and a welding strip 44. The robot arm 7 is arranged on one side of the rack 4 to be processed, and the mobile plate 8 is arranged on the robot arm 7, and the mobile plate 8 is driven by the robot arm 7 to move in multiple directions. Four first pneumatic suction cups 9 are arranged on one mobile plate 8, and the four first pneumatic suction cups 9 are respectively used to adsorb the four side ends of a battery cell 2 so that the mobile plate 8 can be connected to the battery cell 2. At the same time, the laser welder 10 is arranged on the side of the rack 4 to be processed away from the robot arm 7. Since the robot arm 7 and the laser welder 10 are mature technical means in the field to which the present application belongs, they are not described in detail. The lower end of the storage box 11 is rotatably installed in one end of the rack 4 to be processed away from the transfer rack 1, and a fixed motor is built into the one end to drive the storage box 11 to rotate. A plurality of welding strips 44 are placed in an inner cavity of a storage box 11, as shown in the attached figure. Figure 1 As shown, when the storage box 11 is rotated to a horizontal state, the two welding strips 44 pushed by the storage box 11 are oriented left and right; Preferably, a detection mechanism is also provided at the transfer rack 1, and the detection mechanism is arranged at the transfer rack 1 and the mobile plate 8, and the detection mechanism is used to detect whether the direction of the process groove 3 of the battery cell 2 located at the front end of the vertical rack is in a vertical state with the direction of the rack 4 to be processed. If the two are in a parallel state, the battery cell 2 is rotated 90° to correct the direction of the process groove 3; a placing mechanism, the placing mechanism is arranged at the rack 4 to be processed, and the placing mechanism is used to place three battery cells 2 at the same time, so that the subsequent three battery cells 2 and two welding strips 44 are welded to form a battery string, and a battery string is based on the three battery cells 2 for power generation; a pushing mechanism, the pushing mechanism is arranged at the storage box 11, and the pushing mechanism is used to push the two welding strips 44 so that they fall to the upper ends of the above-mentioned three battery cells 2.

[0022] And as attached Figure 2 and attached Figure 3As shown, a first transverse groove 12 is provided on the side wall of the vertical frame, and an L-shaped push plate 6 is slidably mounted in 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. A vertical through groove 14 is provided through the vertical frame at one side of the first cylinder 13. When the battery cell 2 is moved from the transverse frame to the vertical frame, the transverse end of the L-shaped push plate 6 moves to the rear end of the vertical frame, and at the same time, the vertical end of the L-shaped push plate 6 moves away from the connecting portion of the transverse frame and the vertical frame through the vertical through groove 14 to open the connecting portion of the transverse frame and the vertical frame.

[0023] Preferably, a mounting frame 15 is provided on the side of the machine frame 4 to be processed away from the robot arm 7, and a three-way mover 16 is installed on the mounting frame 15. Figure 1 and attached Figure 6 As shown, the three-way mover 16 includes an X-axis slide rail, an X-axis cylinder, a Y-axis slide rail, a Y-axis cylinder, a Z-axis slide rail and a Z-axis cylinder, and the X-axis slide rail is arranged at the mounting frame 15, and the connected X-axis cylinder and Y-axis slide rail are installed on the X-axis slide rail, and the connected Y-axis cylinder and Z-axis slide rail are installed on the Y-axis slide rail, and finally the connected Z-axis cylinder and laser welder 10 are installed on the Z-axis slide rail, and then the laser welder 10 is driven by the three-way mover 16 to move in the three axes of X, Y and Z, so that the laser welder 10 can perform welding operations.

[0024] Preferably, the detection mechanism includes a first vertical slot 17, a connection installation chamber 18, a rotating shaft 19 and a driving motor 20, as shown in the attached Figure 3 As shown, three first vertical grooves 17 are respectively opened at the 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 connecting and installing chamber 18 is installed on the robot arm 7, and the movable plate 8 is rotatably connected with the connecting and installing chamber 18 through the rotating shaft 19. The driving motor 20 is fixedly installed in the inner cavity of the connecting and installing chamber 18, and the output end of the driving motor 20 is fixedly connected with the rotating shaft 19, so as to drive the movable plate 8 to rotate through the driving motor 20.

[0025] The detection mechanism also includes a connecting long block 21, a mounting slot 22, a sliding long block 23, an infrared transmitter 24 and an infrared receiver 25. The four connecting long blocks 21 are respectively integrally formed at the four side walls of a moving plate 8, and the four first pneumatic suction cups 9 are respectively fixedly connected to the lower ends of the four connecting long blocks 21. Figure 3 and attached Figure 4As shown, when the battery cell 2 is limited at the front end of the vertical frame by the L-shaped push plate 6, the four first vertical grooves 17 are close to the four side ends of the battery cell 2, so that the movable plate 8 is aligned with the battery cell 2 up and down along the four first vertical grooves 17, and the battery cell 2 is adsorbed by the four first pneumatic suction cups 9, so that the movable plate 8 moves together with the battery cell 2, and a mounting through groove 22 is opened at the lower middle end of a movable plate 8, as shown in the attached Figure 1 , Attachment Figure 4 and attached Figure 7 As shown, multiple groups of sliding long blocks 23 are integrally formed on both sides of a mounting slot 22 in a symmetrical manner, and two sliding long blocks 23 form a group. At the same time, the initial direction of the multiple groups of sliding long blocks 23 is a front-to-back direction, and an infrared transmitter 24 and an infrared receiver 25 are respectively fixedly installed at opposite ends of a group of sliding long blocks 23, and the infrared receiver 25 is electrically connected to the drive motor 20; The detection mechanism also includes a reset slide 26, a reset spring 27 and a blocking long block 28. A reset slide 26 is opened at a side wall of a mounting slot 22, and a blocking long block 28 is slidably sleeved in a reset slide 26. Fig.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 the multiple groups of sliding long blocks 23, a return spring 27 is welded between the inner wall of a return slide 26 and a blocking long block 28, and the return spring 27 restores the initial state of the blocking long block 28 through elastic force.

[0026] In particular, the attached Fig.13 As shown, when the process slot 3 of the battery cell 2 located at the front end of the vertical rack is in a forward and backward direction, the movable plate 8 is driven to move downward, and the blocking long block 28 first abuts against the upper end of the battery cell 2, and the multiple sets of sliding long blocks 23 continue to slide into the multiple process slots 3, so that the blocking long block 28 is located at the upper end of the installation through slot 22, so as to remove the obstruction of the infrared transmitter 24 and the infrared receiver 25, so that the infrared receiver 25 receives the infrared signal of the infrared transmitter 24, indicating that the process slot 3 of the battery cell 2 is in a vertical state with the pushed welding strip 44, and then the driving motor 20 is not started, and the battery cell 2 is directly moved to the rack 4 to be processed; When the process slot 3 of the battery cell 2 at the front end of the vertical rack is oriented to the left and right, the movable plate 8 is driven to move downward. At this time, the directions of the multiple groups of blocking long blocks 28 are perpendicular to the directions of the multiple groups of process slots 3, so that the multiple groups of blocking long blocks 28 cannot slide into the multiple groups of process slots 3. At the same time, the width of the blocking long blocks 28 is greater than the width of the process slots 3, which causes the multiple groups of process slots 3 and the blocking long blocks 28 to abut against the upper end of the battery cell 2, and the blocking long blocks 28 block the infrared transmitter 24 and the infrared receiver 25, so that the infrared receiver 25 cannot receive the infrared signal of the infrared transmitter 24, so as to indicate that the battery cell 2 is The process slot 3 of the battery single wafer 2 is parallel to the direction of the pushed welding strip 44, and the infrared receiver 25 transmits the start signal to the drive motor 20. Under the limit of the four first vertical slots 17, the four connecting long blocks 21 only move vertically, so that under the premise that the four first pneumatic suction cups 9 adsorb the battery single wafer 2 and take the battery single wafer 2 away from the vertical rack, the drive motor 20 drives the moving plate 8 and the battery single wafer 2 to rotate 90 degrees, so that the process slot 3 of the battery single wafer 2 is perpendicular to the direction of the rack 4 to be processed, and then the battery single wafer 2 is moved to the rack 4 to be processed; 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 32, as shown in the attached Figure 5 and attached Fig.15 As shown, three second vertical grooves 29, a second transverse groove 33 and a third vertical groove 37 are opened in a connected manner on the side wall of a rack 4 to be processed, and three placement plates 30 are slidably mounted on the three second vertical grooves 29 respectively, and a group of second pneumatic suction cups 31 are fixedly installed at the upper end of a placement plate 30. When the robot arm 7 moves the battery cell 2 to the rack 4 to be processed through the first pneumatic suction cup 9, the second vertical groove 29 is used to limit the connection long block 21 so that the battery cell 2 only moves vertically, so that the battery cell 2 falls accurately on the second pneumatic suction cup 31, and the second pneumatic suction cup 31 adsorbs the battery cell 2, and the three first placement cylinders 32 are fixedly connected to the bottom end of a rack 4 to be processed in a straight line equidistant manner, and the output ends of the three first placement cylinders 32 are fixedly connected to the lower ends of the three placement plates 30 respectively, so as to drive the placement plate 30 to move vertically through the first placement cylinders 32.

[0027] Preferably, the placement mechanism further includes a second placement cylinder 34, a first erection block 35 and a first placement slot 36, a second placement cylinder 34 is fixedly connected to a second transverse slot 33, a first erection block 35 is slidably sleeved in a second transverse slot 33, and an output end of the second placement cylinder 34 is fixedly connected to the first erection block 35, so that the first erection block 35 is driven by the second placement cylinder 34 to move laterally, and two first placement slots 36 are opened at the upper end of a first erection block 35; Preferably, the placement mechanism also includes a third placement cylinder 38, a second mounting block 39 and a second placement slot 40, a third placement cylinder 38 is fixedly installed in a third vertical slot 37, a second mounting block 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 mounting block 39, so that the second mounting block 39 can be driven by the third placement cylinder 38 to move vertically, and two second placement slots 40 are opened at the upper end of a second mounting block 39, and when the three battery cells 2 are located on the three placement plates 30, the three battery cells 2 are driven to be located at the bottom end of the rack 4 to be processed, waiting for the subsequent pushing of two welding strips 44.

[0028] The push mechanism includes a placement chamber 41, an input port 42 and a push port 43. Fig.11 As shown, two placement chambers 41 are symmetrically installed in the inner cavity of a storage box 11, and the bottom ends of the two placement chambers 41 are connected to the bottom end of the inner cavity of a storage box 11, two input ports 42 are opened through one end of a storage box 11, and an input cover plate can be rotatably set at the upper end of the input port 43 to open and close the input port 42, and two push ports 42 are opened through the other end of a storage box 11.

[0029] The pushing mechanism also includes a first pushing chute 45, a first pushing cylinder 46 and a blocking cover plate 47. Two first pushing chute 45 are symmetrically opened in the inner cavity of a storage box 11 and located at two pushing ports 43. Two first pushing cylinders 46 are respectively fixedly installed in the two first pushing chute 45. Two blocking cover plates 47 are respectively slidably sleeved on the two first pushing chute 45. The output ends of the two first pushing cylinders 46 are respectively fixedly connected to the two blocking cover plates 47. The blocking cover plates 47 are moved away from or close to the pushing port 43 by the first pushing cylinder 46 to open and close the pushing port 43. Preferably, the pushing mechanism further comprises a second pushing chute 48, a second pushing cylinder 49 and a pushing plate 50, a group of second pushing chute 48 is opened in the inner cavity of a storage box 11 away from the two first pushing chute 45, a group of second pushing cylinder 49 is fixedly connected to a group of second pushing chute 48, a pushing plate 50 is slidably sleeved on a group of second pushing chute 48, and a group of second pushing cylinder 49 output end is fixedly connected to a pushing plate 50, and as shown in the attached Fig.11As shown, after the welding strip 44 fills the placement chamber 41, the two ends of the welding strip 44 located at the bottom of the placement chamber 41 are respectively abutted against the blocking cover plate 47 and the pushing plate 50, so when the storage box 11 is in a vertical state, the welding strip 44 is prevented from moving freely, and when the storage box 11 is in a horizontal state, the blocking cover plate 47 is first driven to open the pushing port 43, and the welding strip 44 located at the bottom of the placement chamber 41 is pushed by the pushing plate 50, and then the pushing plate 50 moves to between the two placement chambers 41, and the remaining welding strip 44 in the placement chamber 41 moves toward the bottom of the placement chamber 41 under the action of gravity, and the welding strip 44 located at the bottom of the placement chamber 41 is abutted against the pushing plate again, so as to push the welding strip 44 uninterruptedly.

[0030] In particular, the attached Fig.15 As shown, when the three battery cells 2 are located at the bottom of the rack 4 to be processed, 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 pushed welding strips 44 slide into the first placement groove 36 and the second placement groove 40, and the two welding strips 44 are limited and supported; and as shown in the attached Fig.16 As shown, after welding is completed, the second mounting block 39 is moved downward until the upper end of the second mounting block 39 is flush with the lower end of the battery cell 2, and the first mounting block 35 is driven to push the three battery cells 2 that have been welded to the right, so that the three battery cells 2 are moved along the three groups of second pneumatic suction cups 31 and the upper end of the second mounting block 39. At the same time, a conveyor belt can be set at the right end of the machine frame 4 to be processed, so that the three battery cells 2 can be moved to the conveyor belt, and then the three battery cells 2 are transported to the packaging station for packaging processing through the conveyor belt.

[0031] The present invention can be explained by the following operation mode: First, the processed battery cell 2 is placed on the conveyor belt 5, and the battery cell 2 is moved from the horizontal rack of the transfer rack 1 to the vertical rack under the transmission of the conveyor belt 5, and the first cylinder 13 is started, 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 attached figure. Figure 3 and attached Figure 4 As shown, the battery single piece 2 is limited at the front end of the vertical frame by the L-shaped push plate 6, and then the mechanical arm 7 is started to drive the mobile plate 8 to move to the front end of the vertical frame, and the four connecting long blocks 21 of the mobile plate 8 slide into the four first vertical grooves 17, so that the mobile plate 8 is aligned with the battery single piece 2 in the upper and lower directions; The movable plate 8 is driven to move downward along the four first vertical grooves 17 until the four first pneumatic suction cups 9 of the movable plate 8 are aligned with the four side ends of the battery single wafer 2, and the four first pneumatic suction cups 9 are started to absorb the battery single wafer 2, and then the movable plate 8 and the battery single wafer 2 are driven by the mechanical arm 7 to move upward and away from the vertical rack. If the sliding long block 23 of the movable plate 8 is not located in the process groove 3 of the battery single wafer 2 at this time, as shown in the attached Fig.14 As shown, the lower end of the blocking long block 28 is flush with the lower end of the sliding long block 23, and the blocking long block 28 blocks the infrared transmitter 24 and the infrared receiver 25, so as to indicate that the direction of the process slot 3 of the battery single wafer 2 is parallel to the direction of the rack 4 to be processed, and the infrared receiver 25 transmits the start signal to the drive motor 20, so that the drive motor 20 drives the moving plate 8 and the battery single wafer 2 to rotate 90 degrees through the rotating shaft 19, so that the direction of the process slot 3 of the battery single wafer 2 is perpendicular to the direction of the rack 4 to be processed; And as attached Figure 5 As shown, the robot arm 7 drives the battery cell 2 to move to the left end of the rack 4 to be processed, and the connecting long block 21 of the movable plate 8 slides downward into the second vertical groove 29 at the left end, so that the lower end of the battery cell 2 contacts the second pneumatic suction cup 31 at the left end. At this time, the second pneumatic suction cup 31 at the left end is started and the first pneumatic suction cup 9 is closed, and then the first placement cylinder 32 at the left end is started, so that the left end placement plate 30 and the battery cell 2 move downward and are located at 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; Then drive the storage box 11 to rotate toward the processing frame 4 until the storage box 11 is in a horizontal state. Fig. 9 and attached Fig.11 As shown, one of the first pushing cylinders 46 is started, one of the blocking cover plates 47 is moved away and one of the pushing ports 43 is opened, and at this time, the second pushing cylinder 49 is started, so that the pushing plate 50 pushes one of the welding strips 44 from the opened pushing port 43, and then another blocking cover plate 47 is moved away and another pushing port 43 is opened, so that the pushing plate 50 pushes another welding strip 44, and the storage box 11 is rotated away from the rack 4 to be processed, so that the storage box 11 is in a vertical state; And as attached Fig.15 As shown, the two pushed welding strips 44 fall onto the three battery cells 2, and at the same time, the two ends of the two welding strips 44 are respectively located in the first placement groove 36 and the second placement groove 40 to limit the two welding strips 44, and the three-way mover 16 is started to move the laser welder 10 to the contact point between the battery cell 2 and the welding strips 44, and then the laser welder 10 is started to weld the contact point; After welding is completed, Fig.16As shown, start the third placing cylinder 38, and let the third placing cylinder 38 drive the second mounting block 39 to move downward until the upper end of the second mounting block 39 is flush with the lower end of the battery cell 2. At this time, close the second pneumatic suction cup 31 and start the second placing cylinder 34, and let the second placing cylinder 34 drive the first mounting block 35 to move to the right, so that the first mounting block 35 pushes the three battery cells 2 that have been welded to the right, until the three battery cells 2 move to the conveyor belt located at the right end of the frame 4 to be processed, so as to transport the three battery cells 2 to the packaging station for packaging processing.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which 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; 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 a 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 adsorb 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 an inner cavity of a storage box (11); A detection mechanism, the detection mechanism being arranged at the transfer rack (1) and the mobile flat 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; and a pushing mechanism, the pushing mechanism being arranged at the storage box (11), and being used to push two welding strips (44).

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: The detection mechanism includes: A first vertical slot (17), a connecting and installing chamber (18), a rotating shaft (19) and a driving motor (20), wherein three of the first vertical slots (17) are respectively arranged at three side walls at the front end of the vertical frame, and the remaining first vertical slot (17) is arranged at one end of the L-shaped push plate (6) close to the front end of the vertical frame, the connecting and installing chamber (18) is installed on the mechanical arm (7), the moving plate (8) is rotatably connected to the connecting and installing chamber (18) via the rotating shaft (19), the driving motor (20) is fixedly installed in the inner cavity of the connecting and installing chamber (18), and the output end of the driving 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 detection mechanism also includes: A connecting long block (21), a mounting slot (22), a sliding long block (23), an infrared transmitter (24) and an infrared receiver (25), wherein four of the connecting long blocks (21) are respectively integrally formed at four side walls of a movable plate (8), four of the first pneumatic suction cups (9) are respectively fixedly connected to the lower ends of the four connecting long blocks (21), one of the mounting slots (22) is opened at the lower middle end of a movable plate (8), a plurality of groups of the sliding long blocks (23) are integrally formed on both sides of a mounting slot (22) in a symmetrical manner, and two sliding long blocks (23) form a group, a group of the sliding long blocks (23) is movably mounted in a process groove (3), one of the infrared transmitters (24) and one of the infrared receivers (25) are respectively fixedly installed at opposite ends of a group of the sliding long blocks (23), and the infrared receiver (25) is electrically connected to a driving motor (20); 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 on 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 a blocking long block (28).

6. The IBC solar cell string light welding equipment according to claim 5, characterized in that: The placing mechanism comprises: A second vertical groove (29), a second transverse groove (33), a third vertical groove (37), a placement plate (30), a second pneumatic suction cup (31) and a first placement cylinder (32); three of the second vertical grooves (29), one of the second transverse grooves (33) and one of the third vertical grooves (37) are arranged in a connected manner on the side wall of a processing frame (4); the three placement plates (30) are respectively slidably mounted on the three second vertical grooves (29); a group of the second pneumatic suction cups (31) is fixedly mounted on the upper end of a placement plate (30); the three first placement cylinders (32) are fixedly connected to the inner bottom end of a processing frame (4) in a straight line 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).

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); 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 pushing mechanism comprises: A placement chamber (41), an input port (42) and a push port (43), wherein the two placement chambers (41) are symmetrically installed in the inner cavity of a storage box (11), the two input ports (42) are opened through one end of the storage box (11), and the two push ports (43) are opened through the other end of the storage box (11).

9. The IBC solar cell string light welding equipment according to claim 8, characterized in that: The push mechanism also includes: A first push chute (45), a first push cylinder (46) and a blocking cover plate (47), wherein two of the first push chute (45) are symmetrically arranged in an inner cavity of a storage box (11) and located at two push ports (43), the two first push cylinders (46) are respectively fixedly installed in the two first push chute (45), the two blocking cover plates (47) are respectively slidably mounted on the two first push chute (45), and the output ends of the two first push cylinders (46) are respectively fixedly connected to the two blocking cover plates (47); A second pushing chute (48), a second pushing cylinder (49) and a pushing plate (50), wherein a group of the second pushing chute (48) is opened in an inner cavity of a storage box (11) away from the two first pushing chute (45), a group of the second pushing cylinder (49) is fixedly connected to a group of the second pushing chute (48), a pushing plate (50) is slidably mounted on a group of the second pushing chute (48), and an output end of a group of the second pushing cylinder (49) is fixedly connected to a pushing plate (50).

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 positional 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). 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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