Anti-dislocation series welding machine and welding method thereof

Abstract

The invention is suitable for the technical field of battery piece welding, and provides an anti-dislocation series welding machine and a welding method thereof.The anti-dislocation series welding machine comprises a conveying frame and a welding part fixedly installed at the top of the conveying frame; the conveying frame comprises a conveying box; a plurality of Z-shaped conveying boxes are arranged on the two opposite side faces of the conveying box in a penetrating and communicating mode. An airflow power part is fixed at the end part of the Z-shaped conveying box; a negative pressure adsorption part is slidably arranged on the inner bottom surface of the conveying box; and a first clamping part and a second clamping part are respectively arranged in the two guide boxes in a sliding manner, and the device realizes equidistant placement of each group of adjacent battery pieces by starting the negative pressure adsorption part, and Z-shaped welding strips in the corresponding Z-shaped conveying boxes are conveyed into the conveying boxes by synchronously starting the airflow power parts, so that the conveying efficiency is improved, and the production cost is reduced. The synchronous placement of multiple groups of battery pieces and Z-shaped welding strips is completed, the traditional mode that the battery pieces and the Z-shaped welding strips are sequentially placed in a staggered mode is replaced, the working procedure is optimized, and meanwhile the series welding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell welding, and more specifically, to an anti-misalignment string welding machine and a welding method thereof. Background Art

[0002] The stringer uses a mechanical transmission mechanism to transport photovoltaic cells. Photovoltaic cells are generally divided into crystalline silicon and amorphous silicon. A whole photovoltaic panel is usually composed of multiple cells, and each cell is electrically connected through a stringer.

[0003] A plurality of photovoltaic cells for series welding are arranged on the top of the conveyor belt, and a welding rod for series welding adjacent photovoltaic cells is arranged on the bottom of the photovoltaic cells, and the other end of the welding rod is overlapped on the top of the adjacent photovoltaic cells. The positive and negative poles of each photovoltaic cell are respectively located on the front and back sides of the photovoltaic cell, and the plurality of photovoltaic cells are connected in series through a plurality of series connecting rods.

[0004] The manual interconnection welding method has a huge workload, and the alignment accuracy of the welding ribbon and the main back grid line electrode is difficult to guarantee reliably, which makes it impossible to achieve mass production and effectively reduce costs. The traditional photovoltaic crystalline silicon string welding machine's cell string alignment, contact fitting, and mobile conveying system design is to alternately place the cells and welding ribbons in sequence. After each group of cells and welding ribbons are placed in contact, they need to be clamped by the corresponding clamping structure. The above operation needs to be repeated to complete the placement of each group of cells and welding ribbons. However, the above operation requires repeated calibration to prevent the misalignment of the cells and welding ribbons. The repeated process is cumbersome and reduces the efficiency of string welding. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide an anti-misalignment string welding machine and a welding method thereof, wherein each group of battery cells is conveyed into a conveying box, and the outermost battery cells are blocked by a blocking rod, so that each group of battery cells are placed in sequence with their head to tail touching each other, and each group of adjacent battery cells is placed at equal intervals by starting the negative pressure adsorption portion, and the Z-shaped welding tape in the corresponding Z-shaped conveying box is conveyed to the interior of the conveying box by synchronously starting each airflow power component, and one end of the Z-shaped welding tape is affixed to the top of the corresponding battery cell, and the other end thereof is affixed to the bottom of the adjacent battery cell, thereby completing the synchronous placement of multiple groups of battery cells and the Z-shaped welding tape, replacing the traditional method of placing the battery cells and the Z-shaped welding tape in a staggered manner in sequence, thereby optimizing the process and improving the efficiency of string welding.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A dislocation-proof string welding machine comprises a conveying frame and a welding part fixedly installed on the top thereof; the conveying frame comprises a conveying box; a conveying plate is fixed on the top and bottom of the conveying box; a number of battery sheets slidingly matched with the inner wall of the conveying box are conveyed on the conveying plate; a number of Z-shaped welding strips coated with tin alloy are slidably arranged in the conveying plate; a number of Z-shaped conveying boxes are penetrated and connected on two opposite sides of the conveying box; an airflow power component is fixed on the end of the Z-shaped conveying box; a negative pressure adsorption part is slidably arranged on the bottom surface of the conveying box; a mounting plate is fixed on the top and bottom of the conveying box; slide grooves are opened on both sides of the corresponding mounting plates at the top and bottom of the conveying box; a slide plate is slidably arranged inside the slide groove; a baffle is fixed on the bottom of the slide plate; guide boxes connected with them are symmetrically fixed on two opposite sides of the Z-shaped conveying box; a first clamping part and a second clamping part are slidably arranged inside the two guide boxes.

[0008] The present invention is further configured as follows: installation grooves are symmetrically provided on the surface of the conveying plate; a belt roller is rotatably provided between the two installation grooves; a conveying belt adapted to the belt roller is provided inside the installation groove; a servo motor is installed on the side of the conveying plate; the output end of the servo motor is fixedly connected to one end of the belt roller; a controller is installed on the top of the conveying box; and the output end of the controller is electrically connected to the servo motor.

[0009] The present invention is further configured as follows: a sliding opening is provided on the surface of the conveying plate between the two mounting grooves; limiting grooves are symmetrically provided on both sides of the inner wall of the sliding opening; the negative pressure adsorption part comprises a plurality of negative pressure suction cups; sliding blocks which are symmetrically fixed on the peripheral side surfaces of the negative pressure suction cups and which slide in cooperation with the limiting grooves; a positioning plate is fixed on the bottom surface of the negative pressure suction cup; the positioning plate is fixedly installed on the bottom of the conveying box by fastening bolts; an L-shaped plate is fixed on the bottom surface of the positioning plate; a first electric push rod which is electrically connected to the output end of the controller is fixed on the surface of the L-shaped plate; a blocking rod which slides through the positioning plate is fixed on the telescopic end of the first electric push rod; a connecting pipe is provided at the bottom of the negative pressure suction cup; the connecting pipe is connected to the exhaust end of an external vacuum pump through a pipeline.

[0010] The present invention is further configured as follows: an air pump electrically connected to a controller is fixedly mounted on the side of the L-shaped plate; a delivery pipe is connected to the output end of the air pump; a one-way valve is provided on the delivery pipe near the air pump; an electromagnetic valve electrically connected to the output end of the controller is provided on the delivery pipe near its end; a piston cylinder and a piston rod are symmetrically fixed on the circumferential side of the negative pressure suction cup; a piston plate slidingly matched with the inner wall of the adjacent piston cylinder is fixed to the end of the piston rod; a hose is connected between the piston cylinder and the delivery pipe; and a tension spring is connected between adjacent sliders.

[0011] The present invention is further configured as follows: second electric push rods electrically connected to the output end of the controller are symmetrically fixed on two opposite sides of the mounting plate; and the telescopic ends of the second electric push rods are fixedly connected to the corresponding slide plates.

[0012] The present invention is further configured as follows: the airflow power component includes a Z-shaped baffle cover that is plugged into and matched with the Z-shaped conveying box; the Z-shaped conveying box is provided with two groups of conveying channels connected thereto; the Z-shaped baffle cover is provided with two groups of sealing shells that slide and match with the corresponding conveying channels; the sealing shells and the Z-shaped baffle cover are provided with matching mounting holes; the side of the Z-shaped baffle cover is connected to two groups of mounting boxes; the side of the mounting box is connected to an air supply pipe and an air exhaust pipe in sequence; the air supply pipe and the air exhaust pipe are respectively connected to an external blower and a negative pressure pump through pipelines.

[0013] The present invention is further configured as follows: the first clamping part and the second clamping part both include sleeves that are slidably matched with the corresponding guide boxes; the Z-shaped welding strip is slidably arranged between the two sleeves; an upper ear plate is fixed to the top of the sleeve on the first clamping part; a lower ear plate is fixed to the bottom of the sleeve on the second clamping part; guide holes are provided on the upper ear plate and the lower ear plate; sliding grooves that are slidably matched with the corresponding upper ear plate and the lower ear plate are respectively provided on the two guide boxes on the Z-shaped conveying box; guide rods are fixed to the two opposite sides of the conveying box; and ear seats are fixed to the ends of the guide rods; A bidirectional screw rod is rotatably arranged between the two ear seats; a driving motor electrically connected to the output end of the controller is fixedly mounted on the side of one of the ear seats; a sliding part slidably matched with the corresponding guide rod is symmetrically rotatably arranged on the bidirectional screw rod; the sliding part includes a connecting plate; a sliding hole slidably matched with the guide rod is provided on the side of the connecting plate, and a screw hole rotatably matched with the thread of the bidirectional screw rod is provided on the side below the sliding hole; threaded tubes are symmetrically fixed on the side of the connecting plate; a connecting rod slidably matched with the corresponding guide hole is screwed into the threaded tube.

[0014] The present invention is further configured as follows: an extension plate is fixed at the end of the sleeve; a clamp is slidably arranged inside the sleeve; a reset spring is fixedly connected between the clamp and the inner wall of the sleeve; an iron block is fixed on the side of the clamp; and an electromagnetic suction cup electrically connected to the output end of the controller is fixed on the inner wall of the sleeve.

[0015] The present invention is further configured as follows: the welding part includes a fixing plate fixedly installed on the top of the conveying box; a third electric push rod electrically connected to the output end of the controller is fixed to the side of the fixing plate; a fixing seat is fixed to the telescopic end of the third electric push rod; a fourth electric push rod electrically connected to the output end of the controller is fixed to the top of the fixing seat; a U-shaped plate is fixed to the telescopic end of the fourth electric push rod; a number of soldering iron tips electrically connected to the output end of the controller are evenly fixedly installed on the bottom surface of the U-shaped plate; and a number of avoidance grooves are evenly opened on the top and bottom of the conveying box.

[0016] The advantages of the present invention are:

[0017] 1. The present invention conveys each group of battery cells into the interior of the conveying box, and the outermost battery cells are blocked by the blocking rod, so that each group of battery cells are placed in sequence with their head to tail touching each other. By starting the negative pressure adsorption part, each group of adjacent battery cells are placed at equal intervals. By synchronously starting each airflow power component, the Z-shaped welding tape in the corresponding Z-shaped conveying box is conveyed to the interior of the conveying box, and one end of the Z-shaped welding tape is attached to the top of the corresponding battery cell, and the other end is attached to the bottom of the adjacent battery cell, so that multiple groups of battery cells and the Z-shaped welding tape are synchronously placed, instead of the traditional method of staggered placement of battery cells and Z-shaped welding tapes in sequence, thereby optimizing the process and improving the efficiency of string welding.

[0018] 2. The present invention realizes stable clamping of each group of Z-shaped welding ribbons through the coordinated use of the sliding part with the first clamping part and the second clamping part, controls the start-up welding part, and drives each group of soldering iron tips to weld the corresponding Z-shaped welding ribbons to the corresponding battery cells, thereby preventing the Z-shaped welding ribbons and the corresponding battery cells from being misaligned during the series welding process, resulting in cold welding or even desoldering, thereby improving the quality of series welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an anti-misalignment string welding machine of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the conveying rack of the present invention.

[0021] Figure 3 For the present invention Figure 2 Schematic diagram of the structure from a frontal perspective.

[0022] Figure 4 For the present invention Figure 2 Schematic diagram of the structure from the right view perspective.

[0023] Figure 5 It is a structural schematic diagram of the welding part of the present invention.

[0024] Figure 6 It is a schematic structural diagram of the negative pressure adsorption part of the present invention.

[0025] Figure 7 It is a schematic structural diagram of the negative pressure adsorption part and the battery cell assembly of the present invention.

[0026] Figure 8 It is a schematic structural diagram of the airflow power component of the present invention.

[0027] Fig. 9 It is a schematic structural diagram of the first clamping part and the second clamping part of the present invention.

[0028] Fig.10 For the present invention Fig. 9 Schematic diagram of the structure from a frontal perspective.

[0029] Fig.11 It is a schematic structural diagram of the battery cell and Z-shaped welding ribbon assembly of the present invention.

[0030] Fig.12 It is a schematic structural diagram of the sliding part of the present invention.

[0031] In the figure: 1. conveying frame; 2. welding part; 3. conveying box; 4. conveying plate; 5. battery cell; 6. Z-shaped welding belt; 7. Z-shaped conveying box; 8. air flow dynamic component; 9. negative pressure adsorption part; 10. mounting plate; 11. slide groove; 12. slide plate; 13. slide plate; 14. guide box; 15. first clamping part; 16. second clamping part; 17. mounting groove; 18. belt roller; 19. conveying belt; 20. servo motor; 21. controller; 22. sliding port; 23. limit groove; 24. negative pressure suction cup; 25. slider; 26. positioning plate; 27. L-shaped plate; 28. first electric push rod; 29. ​​stop rod; 30. air pump; 31. conveying pipe; 32. one-way valve; 33. solenoid valve; 34. piston cylinder; 35. piston rod; 36. hose; 37. connecting pipe; 38. second electric push rod; 39. Z-shaped cover; 40. conveying channel; 41. sealing shell; 42. mounting hole; 43. mounting box; 44. air pipe; 45. exhaust pipe; 46. tension spring; 47. sleeve; 48. upper ear plate; 49. lower ear plate; 50. guide hole; 51. guide rod; 52. ear seat; 53. bidirectional screw rod; 54. driving motor; 55. sliding part; 56. connecting plate; 57. sliding hole; 58. screw hole; 59. threaded pipe; 60. connecting rod; 61. extension plate; 62. clamping plate; 63. reset spring; 64. iron block; 65. electromagnetic suction cup; 66. fixing plate; 67. third electric push rod; 68. fixing seat; 69. fourth electric push rod; 70. U-shaped plate; 71. soldering iron tip; 72. avoidance groove. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0034] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0035] For example, see Figure 1-12 , the present invention provides the following technical solutions:

[0036] A dislocation-proof string welding machine, specifically, comprises a conveying frame 1 and a welding part 2 fixedly mounted on the top thereof; the conveying frame 1 comprises a conveying box 3; a conveying plate 4 is fixedly mounted on the top and the bottom of the conveying box 3; a plurality of battery cells 5 slidingly matched with the inner wall of the conveying box 3 are conveyed on the conveying plate 4; a plurality of Z-shaped welding strips 6 coated with tin alloy are slidably arranged in the conveying plate 4; a plurality of Z-shaped conveying boxes 7 are penetrated and connected to the two opposite sides of the conveying box 3; an airflow power component 8 is fixedly mounted on the end of the Z-shaped conveying box 7; a negative pressure adsorption part 9 is slidably arranged on the bottom surface of the conveying box 3; a mounting plate 10 is fixedly mounted on the top and the bottom of the conveying box 3; a slide groove 11 is provided on both sides of the corresponding mounting plate 10 at the top and the bottom of the conveying box 3; a slide plate 12 is slidably arranged inside the slide groove 11; a baffle plate 13 is fixedly mounted at the bottom of the slide plate 12; a guide box 14 connected to the Z-shaped conveying box 7 is symmetrically fixedly mounted on the two opposite sides; a first clamping part 15 and a second clamping part 16 are slidably arranged inside the two guide boxes 14.

[0037] Working principle of the first embodiment:

[0038] By conveying each group of battery cells 5 into the conveying box 3, the outermost battery cells 5 are blocked by the blocking rod 29, so that each group of battery cells 5 are placed in sequence with their head to tail touching each other, and by starting the negative pressure adsorption part 9, each group of adjacent battery cells 5 is placed at equal intervals, and by synchronously starting each airflow power component 8, the Z-shaped welding ribbon 6 in the corresponding Z-shaped conveying box 7 is conveyed to the conveying box 3, one end of the Z-shaped welding ribbon 6 is attached to the top of the corresponding battery cell 5, and the other end thereof is attached to the bottom of the adjacent battery cell 5, thereby completing the synchronous placement of multiple groups of battery cells 5 and the Z-shaped welding ribbon 6, instead of the traditional method of placing the battery cells 5 and the Z-shaped welding ribbon 6 in a staggered manner in sequence, thereby optimizing the process and improving the efficiency of string welding.

[0039] For example 2, please refer to Figure 1-12The second embodiment makes the following improvements on the basis of the first embodiment. Specifically, mounting grooves 17 are symmetrically provided on the surface of the conveying plate 4; a belt roller 18 is rotatably provided between the two mounting grooves 17; a conveying belt 19 adapted to the belt roller 18 is provided inside the mounting groove 17; a servo motor 20 is installed on the side of the conveying plate 4; the output end of the servo motor 20 is fixedly connected to one end of the belt roller 18; a controller 21 is installed on the top of the conveying box 3; and the output end of the controller 21 is electrically connected to the servo motor 20.

[0040] A sliding opening 22 is provided on the surface of the conveying plate 4 between the two mounting grooves 17; limiting grooves 23 are symmetrically provided on both sides of the inner wall of the sliding opening 22; the negative pressure adsorption part 9 includes a plurality of negative pressure suction cups 24; sliding blocks 25 slidably matched with the limiting grooves 23 are symmetrically fixed on the sides of the negative pressure suction cups 24; a positioning plate 26 is fixed to the bottom surface of a negative pressure suction cup 24; the positioning plate 26 is fixedly installed on the bottom of the conveying box 3 by fastening bolts; an L-shaped plate 27 is fixed to the bottom surface of the positioning plate 26; a first electric push rod 28 electrically connected to the output end of the controller 21 is fixed on the surface of the L-shaped plate 27; a blocking rod 29 sliding through the positioning plate 26 is fixed to the telescopic end of the first electric push rod 28; a connecting pipe 37 is provided at the bottom of the negative pressure suction cup 24; the connecting pipe 37 is connected to the exhaust end of the external vacuum pump through a pipeline.

[0041] An air pump 30 electrically connected to the controller 21 is fixedly installed on the side of the L-shaped plate 27; a delivery pipe 31 is arranged at the output end of the air pump 30; a one-way valve 32 is arranged on the delivery pipe 31 near the air pump 30; a solenoid valve 33 electrically connected to the output end of the controller 21 is arranged on the delivery pipe 31 near its end; a piston cylinder 34 and a piston rod 35 are symmetrically fixed on the side of the negative pressure suction cup 24; a piston plate slidingly matched with the inner wall of the adjacent piston cylinder 34 is fixed to the end of the piston rod 35; a hose 36 is connected between the piston cylinder 34 and the delivery pipe 31; and a tension spring 46 is connected between adjacent sliders 25.

[0042] Working principle of the second embodiment:

[0043] By controlling and starting the servo motor 20 to drive the belt roller 18 to drive, thereby driving the corresponding conveyor belt 19 to drive, each group of battery cells 5 is placed on the conveyor plate 4 in turn, and the driven conveyor belt 19 transports each group of battery cells 5 to the inside of the conveyor box 3. The outermost battery cells 5 near the outlet end of the conveyor box 3 are blocked by the blocking rod 29. Under the transmission action of the conveyor belt 19, each group of adjacent battery cells 5 is contacted end to end in turn. At this time, each group of negative pressure suction cups 24 is placed directly below the corresponding battery cell 5.

[0044] By controlling to start the external vacuum pump, the air in the corresponding negative pressure suction cup 24 is evacuated through the corresponding connecting pipe 37, so that a negative pressure environment is formed inside the corresponding negative pressure suction cup 24, and the corresponding battery cell 5 is sucked; the servo motor 20 is controlled to be closed so that the conveying belt 19 stops driving, and the air pump 30 is started to output the air through the conveying pipe 31, and the air is delivered into the corresponding piston cylinder 34 through each group of hoses 36. As the air flow increases, the corresponding piston plate is squeezed to drive the corresponding piston rod 35 to slide outward along the inner wall of the piston cylinder 34, so that the corresponding negative pressure suction cup 24 slides along the inner wall of the sliding opening 22, and the corresponding tension spring 46 is stretched. Each group of negative pressure suction cups 24 drives the sucked battery cells 5 to slide synchronously until the spacing between adjacent battery cells 5 in each group is consistent, completing the automatic adjustment of the equal spacing between adjacent battery cells 5 in each group (the negative pressure suction cup 24 connected to the positioning plate 26 remains stationary, and its corresponding sucked battery cell 5 remains stationary).

[0045] For example 3, please refer to Figure 1-12 The third embodiment makes the following improvements on the basis of the second embodiment. Specifically, the second electric push rods 38 electrically connected to the output end of the controller 21 are symmetrically fixed on the two opposite sides of the mounting plate 10; the telescopic ends of the second electric push rods 38 are fixedly connected to the corresponding slide plates 12.

[0046] The airflow power component 8 includes a Z-shaped cover 39 plugged into the Z-shaped conveying box 7; the Z-shaped conveying box 7 is provided with two groups of conveying channels 40 connected thereto; the Z-shaped cover 39 is provided with two groups of sealing shells 41 slidingly matched with the corresponding conveying channels 40; the sealing shells 41 and the Z-shaped cover 39 are provided with matching mounting holes 42; two groups of mounting boxes 43 are connected to the side of the Z-shaped cover 39; the side of the mounting box 43 is connected in sequence with an air supply pipe 44 and an air exhaust pipe 45; the air supply pipe 44 and the air exhaust pipe 45 are respectively connected to the external blower and the negative pressure pump through pipelines.

[0047] The first clamping part 15 and the second clamping part 16 both include a sleeve 47 that slidably cooperates with the corresponding guide box 14; the Z-shaped welding strip 6 is slidably arranged between the two sleeves 47; an upper ear plate 48 is fixed to the top of the sleeve 47 on the first clamping part 15; a lower ear plate 49 is fixed to the bottom of the sleeve 47 on the second clamping part 16; guide holes 50 are provided on the upper ear plate 48 and the lower ear plate 49; sliding grooves 73 that slidably cooperate with the corresponding upper ear plate 48 and the lower ear plate 49 are respectively provided on the two guide boxes 14 on the Z-shaped conveying box 7; guide rods 51 are fixed to the two opposite sides of the conveying box 3; ear seats 52 are fixed to the ends of the guide rods 51; the two ear seats A bidirectional screw rod 53 is rotatably arranged between the two ends of the two-way screw rod 52; a driving motor 54 electrically connected to the output end of the controller 21 is fixedly mounted on the side of an ear seat 52; a sliding portion 55 slidably matched with the corresponding guide rod 51 is symmetrically threaded and rotatably arranged on the bidirectional screw rod 53; the sliding portion 55 includes a connecting plate 56; a sliding hole 57 slidably matched with the guide rod 51 is provided on the side of the connecting plate 56, and a screw hole 58 rotatably matched with the bidirectional screw rod 53 is provided on the side below the sliding hole 57; threaded tubes 59 are symmetrically fixed on the side of the connecting plate 56; a connecting rod 60 slidably matched with the corresponding guide hole 50 is screwed in the threaded tube 59.

[0048] An extension plate 61 is fixed at the end of the sleeve 47; a clamping plate 62 is slidably arranged inside the sleeve 47; a return spring 63 is fixedly connected between the clamping plate 62 and the inner wall of the sleeve 47; an iron block 64 is fixed on the side of the clamping plate 62; an electromagnetic suction cup 65 electrically connected to the output end of the controller 21 is fixed on the inner wall of the sleeve 47.

[0049] Working principle of the third embodiment:

[0050] By controlling and starting the second electric push rod 38, the slide plate 12 and the baffle plate 13 at its bottom are driven to slide synchronously in the direction away from the mounting plate 10 to block the corresponding Z-shaped welding strip 6; the drive motor 54 is controlled and started to drive the bidirectional screw rod 53 to rotate, thereby driving the two groups of sliding parts 55 to slide synchronously along the corresponding guide rod 51, and through the connecting rod 60, each group of the first clamping part 15 and the second clamping part 16 are driven to slide along the corresponding guide box 14 in the direction close to the inside of the conveying box 3, until the clamping plate 62 extends into the specified position inside the conveying box 3 and stops.

[0051] The external blower is controlled to start, and air is sent into the Z-shaped cover 39 through the air supply pipe 44. The blown air blows each group of Z-shaped welding ribbons 6 in the Z-shaped conveying box 7, so that each group of Z-shaped welding ribbons 6 slides along the corresponding Z-shaped conveying box 7 toward the direction close to the inside of the conveying box 3, and slides along the inner walls of the two adjacent sleeves 47. The adjacent sleeves 47 guide the Z-shaped welding ribbons 6 to prevent the Z-shaped welding ribbons 6 from being misplaced during the sliding process. When the innermost Z-shaped welding ribbon 6 slides against the corresponding side of the baffle 13, each group of electromagnetic suction cups 65 is controlled to be electrically attracted to the corresponding iron block 64, so that the corresponding two groups of clamps 62 slide close to each other, and the corresponding Z-shaped welding ribbon 6 is clamped and fixed. At this time, one end of the Z-shaped welding ribbon 6 is attached to the top of the corresponding battery cell 5, and the other end thereof is attached to the bottom of the adjacent battery cell 6, so that the synchronous placement of multiple groups of battery cells 5 and Z-shaped welding ribbons 6 is completed, instead of the traditional method of placing the battery cells 5 and Z-shaped welding ribbons 6 in sequence in an alternating manner, the process is optimized, and the efficiency of string welding is improved.

[0052] After completing the stable clamping of each group of Z-shaped welding strips 6, control the start of the second electric push rod 38 to shrink and reset it, drive the baffle 13 to slide synchronously in the direction close to the mounting plate 10, release the limit on the side of the Z-shaped welding strip 6, and avoid the Z-shaped welding strip 6 from contacting the baffle 13 during the subsequent welding process, thereby affecting the normal welding process; control the shutdown of the external blower, and at the same time control the start of the external negative pressure pump to extract the air in the corresponding Z-shaped baffle cover 39 through the exhaust pipe 45, so that a negative pressure environment is formed inside the Z-shaped baffle cover 39, and the Z-shaped welding strip 6 that is not clamped and fixed is sucked into the Z-shaped conveying box 7 to avoid affecting the subsequent welding operation.

[0053] Example 4, please refer to Figure 1-12 , the fourth embodiment makes the following improvements on the basis of the third embodiment. Specifically, the welding part 2 includes a fixing plate 66 fixedly installed on the top of the conveying box 3; a third electric push rod 67 electrically connected to the output end of the controller 21 is fixed to the side of the fixing plate 66; a fixing seat 68 is fixed to the telescopic end of the third electric push rod 67; a fourth electric push rod 69 electrically connected to the output end of the controller 21 is fixed to the top of the fixing seat 68; a U-shaped plate 70 is fixed to the telescopic end of the fourth electric push rod 69; a plurality of soldering iron tips 71 electrically connected to the output end of the controller 21 are evenly fixed on the bottom surface of the U-shaped plate 70; a plurality of avoidance grooves 72 are evenly opened on the top and bottom of the conveying box 3.

[0054] Working principle of the fourth embodiment:

[0055] After completing the stable placement of each group of battery cells 5 and Z-shaped welding strips 6, the fourth electric push rod 69 is controlled to start, so that it descends and drives each group of soldering iron tips 71 to descend to fit the corresponding Z-shaped welding strips 6. The third electric push rod 67 is controlled to start to drive the U-shaped plate 70 and the groups of soldering iron tips 71 at the bottom thereof to slide synchronously. The heat of the soldering iron tip 71 melts the tin alloy of the Z-shaped welding strip 6, thereby welding the Z-shaped welding strip 6 to the corresponding position of the corresponding battery cell 5.

[0056] A welding method for a dislocation-proof string welding machine comprises the following steps:

[0057] T1. Each group of battery cells 5 is transported into the conveying box 3 in sequence through the conveying belt 19. The outermost battery cells 5 near the exit end of the conveying box 3 are blocked by the blocking rod 29. Each group of battery cells 5 is connected end to end in sequence. By starting the negative pressure adsorption unit 9, each group of adjacent battery cells 5 is placed at equal intervals.

[0058] T2. Synchronously start each group of airflow power components 8 to deliver the Z-shaped welding tape 6 in the corresponding Z-shaped conveying box 7 to the inside of the conveying box 3. One end of the Z-shaped welding tape 6 is attached to the top of the corresponding battery cell 5, and the other end is attached to the bottom of the adjacent battery cell 5, so that multiple groups of battery cells 5 and Z-shaped welding tapes 6 are placed synchronously; through the coordinated use of the sliding part 55 and the first clamping part 15 and the second clamping part 16, stable clamping of each group of Z-shaped welding tapes 6 is achieved.

[0059] T3, control and start the welding part 2 to drive each group of soldering iron tips 71 to weld the corresponding Z-shaped soldering ribbon 6 to the corresponding battery cell 5.

[0060] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0064] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A dislocation-proof string welding machine, comprising a conveying frame and a welding part fixedly mounted on the top thereof; characterized in that: The conveyor frame comprises a conveyor box; conveyor plates are fixed on the top and bottom of the conveyor box; a plurality of battery cells slidingly matched with the inner wall of the conveyor box are conveyed on the conveyor plate; a plurality of Z-shaped solder strips coated with tin alloy are slidably arranged in the conveyor plate; A plurality of Z-shaped conveying boxes are provided on both opposite sides of the conveying box; airflow power components are fixed to the ends of the Z-shaped conveying boxes; a negative pressure adsorption part is slidably provided on the bottom surface of the conveying box; The top and bottom of the conveying box are fixed with mounting plates; the top and bottom of the conveying box are provided with slide grooves on both sides of the corresponding mounting plates; a slide plate is slidably arranged inside the slide groove; a baffle is fixed at the bottom of the slide plate; The two opposite sides of the Z-shaped conveying box are symmetrically fixed with guide boxes connected thereto; the first clamping part and the second clamping part are slidably arranged inside the two guide boxes respectively.

2. The anti-dislocation string welding machine according to claim 1, characterized in that: The surface of the conveying plate is symmetrically provided with mounting grooves; a belt roller is rotatably arranged between the two mounting grooves; a conveying belt adapted to the belt roller is arranged inside the mounting groove; a servo motor is installed on the side of the conveying plate; the output end of the servo motor is fixedly connected to one end of the belt roller; a controller is installed on the top of the conveying box; the output end of the controller is electrically connected to the servo motor.

3. The anti-dislocation string welding machine according to claim 2, characterized in that: The conveying plate surface is provided with a sliding opening between the two mounting grooves; the inner wall of the sliding opening is symmetrically provided with limiting grooves on both sides; the negative pressure adsorption part includes a plurality of negative pressure suction cups; The negative pressure suction cup has symmetrically fixed sliding blocks that slide in cooperation with the limit grooves on its circumferential side surface; a positioning plate is fixed to the bottom surface of the negative pressure suction cup; the positioning plate is fixedly mounted on the bottom of the conveying box by fastening bolts; an L-shaped plate is fixed to the bottom surface of the positioning plate; a first electric push rod that is electrically connected to the output end of the controller is fixed through the surface of the L-shaped plate; a blocking rod that slides through the positioning plate is fixed to the telescopic end of the first electric push rod; a connecting pipe is provided at the bottom of the negative pressure suction cup; the connecting pipe is connected to the exhaust end of an external vacuum pump through a pipeline.

4. The anti-dislocation string welding machine according to claim 3, characterized in that: An air pump electrically connected to the controller is fixedly mounted on the side of the L-shaped plate; a delivery pipe is connected to the output end of the air pump; a one-way valve is arranged on the delivery pipe near the air pump; and a solenoid valve electrically connected to the output end of the controller is arranged on the delivery pipe near its end; The negative pressure suction cup is symmetrically fixed with a piston cylinder and a piston rod on its circumferential side; the piston rod end is fixed with a piston plate that slides with the inner wall of the adjacent piston cylinder; a hose is connected between the piston cylinder and the delivery pipe; and tension springs are connected between adjacent sliders.

5. The anti-dislocation string welding machine according to claim 4, characterized in that: The second electric push rods electrically connected to the output end of the controller are symmetrically fixed on two opposite sides of the mounting plate; the telescopic ends of the second electric push rods are fixedly connected to the corresponding slide plates.

6. The anti-dislocation string welding machine according to claim 5, characterized in that: The airflow power component includes a Z-shaped baffle cover that is plugged into the Z-shaped conveying box; the Z-shaped conveying box is provided with two groups of conveying channels connected thereto; the Z-shaped baffle cover is provided with two groups of sealing shells that slide with the corresponding conveying channels; the sealing shells and the Z-shaped baffle cover are provided with matching mounting holes; two groups of mounting boxes are connected to the side of the Z-shaped baffle cover; the side of the mounting box is connected in sequence with an air supply pipe and an air exhaust pipe; the air supply pipe and the air exhaust pipe are respectively connected to an external blower and a negative pressure pump through pipelines.

7. The anti-dislocation string welding machine according to claim 6, characterized in that: The first clamping part and the second clamping part each include a sleeve that is slidably matched with a corresponding guide box; the Z-shaped welding strip is slidably arranged between the two sleeves; an upper ear plate is fixed to the top of the sleeve on the first clamping part; a lower ear plate is fixed to the bottom of the sleeve on the second clamping part; guide holes are provided on the upper ear plate and the lower ear plate; sliding grooves that are slidably matched with the corresponding upper ear plate and the lower ear plate are respectively provided on the two guide boxes on the Z-shaped conveying box; Guide rods are fixed on two opposite sides of the conveying box; ears are fixed on the ends of the guide rods; a bidirectional screw rod is rotatably arranged between the two ears; a driving motor electrically connected to the output end of the controller is fixedly installed on the side of one of the ears; a sliding part symmetrically threaded and rotatably arranged on the bidirectional screw rod is slidably matched with the corresponding guide rod; the sliding part includes a connecting plate; a sliding hole slidably matched with the guide rod is provided on the side of the connecting plate, and a screw hole rotatably matched with the thread of the bidirectional screw rod is provided on the side below the sliding hole; threaded tubes are symmetrically fixed on the side of the connecting plate; a connecting rod slidably matched with the corresponding guide hole is screwed in the threaded tube.

8. The anti-dislocation string welding machine according to claim 7, characterized in that: An extension plate is fixed at the end of the sleeve; a clamp is slidably arranged inside the sleeve; a reset spring is fixedly connected between the clamp and the inner wall of the sleeve; an iron block is fixed on the side of the clamp; an electromagnetic suction cup electrically connected to the output end of the controller is fixed on the inner wall of the sleeve.

9. The anti-dislocation string welding machine according to claim 8, characterized in that: The welding part includes a fixing plate fixedly mounted on the top of the conveying box; a third electric push rod electrically connected to the output end of the controller is fixed to the side of the fixing plate; a fixing seat is fixed to the telescopic end of the third electric push rod; a fourth electric push rod electrically connected to the output end of the controller is fixed to the top of the fixing seat; a U-shaped plate is fixed to the telescopic end of the fourth electric push rod; a number of soldering iron tips electrically connected to the output end of the controller are evenly fixedly mounted on the bottom surface of the U-shaped plate; a number of avoidance grooves are evenly opened on the top and bottom of the conveying box.

10. The welding method of the anti-misalignment stringer according to claim 9, characterized in that: The following steps are involved: T1. The battery cells of each group are transported into the conveyor box in sequence by the conveyor belt. The outermost battery cells near the exit of the conveyor box are blocked by the blocking rod. The battery cells of each group are connected end to end in sequence. By starting the negative pressure adsorption unit, the adjacent battery cells of each group are placed at equal intervals. T2. Synchronously start each group of airflow power components to deliver the Z-shaped welding ribbon in the corresponding Z-shaped conveying box to the inside of the conveying box, with one end of the Z-shaped welding ribbon attached to the top of the corresponding battery cell and the other end attached to the bottom of the adjacent battery cell, so as to complete the synchronous placement of multiple groups of battery cells and Z-shaped welding ribbons; the sliding part cooperates with the first clamping part and the second clamping part to achieve stable clamping of each group of Z-shaped welding ribbons; T3, control the start-up welding part to drive each group of soldering iron tips to weld the corresponding Z-shaped soldering ribbon to the corresponding battery cell.

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