Anti-dislocation string welding machine and welding method thereof

Abstract

The present invention is applicable to the technical field of battery cell welding, and provides an anti-misalignment string welding machine and a welding method thereof, including a conveyor frame and a welding part fixedly installed on the top thereof; the conveyor frame includes a conveyor box; a plurality of Z-shaped conveyor boxes are provided on both opposite sides of the conveyor box; an airflow power component is fixed to the end of the Z-shaped conveyor box; a negative pressure adsorption part is slidingly provided on the bottom surface of the conveyor box; a first clamping part and a second clamping part are slidingly provided inside the two guide boxes, respectively. The device solves the problem of placing adjacent groups of battery cells at equal intervals by starting the negative pressure adsorption part, and by synchronously starting each airflow power component, the Z-shaped welding strips in the corresponding Z-shaped conveyor box are sent to the inside of the conveyor box, thereby completing the synchronous placement of multiple groups of battery cells and Z-shaped welding strips, replacing the traditional method of placing battery cells and Z-shaped welding strips in a staggered manner, optimizing the process, and improving the efficiency of string welding.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell welding, and more particularly 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 the stringer.

[0003] A plurality of photovoltaic cells for serial welding are provided on the top of the conveyor belt, and welding rods for serial welding adjacent photovoltaic cells are provided on the bottom of the photovoltaic cells, and the other end of the welding rods 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 multiple photovoltaic cells are serially connected through a plurality of serial connection rods.

[0004] Manual interconnection welding requires a huge amount of work, and the alignment accuracy of the welding ribbon and the main back grid electrode is difficult to reliably guarantee, making 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 place the cells and welding ribbons in a staggered manner. 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 must be repeated to complete the placement of each group of cells and welding ribbons. However, the above operation requires repeated calibration to prevent misalignment of the cells and welding ribbons. The repeated process is relatively cumbersome and reduces the efficiency of string welding. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an anti-misalignment string welding machine and a welding method thereof, which transports 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 end to end touching each other, and by starting the negative pressure adsorption part, each group of adjacent battery cells are placed at equal intervals, and by synchronously starting each airflow power component, the Z-shaped welding strip in the corresponding Z-shaped conveying box is transported to the interior of the conveying box, and one end of the Z-shaped welding strip is attached to the top of the corresponding battery cell, and the other end is attached to the bottom of the adjacent battery cell, thereby completing the synchronous placement of multiple groups of battery cells and the Z-shaped welding strip, replacing the traditional method of placing the battery cells and the Z-shaped welding strip in an alternating manner, 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] The lifting of the ...

[0008] The present invention is further configured as follows: mounting grooves are symmetrically provided on the surface of the conveying plate; a belt roller is rotatably provided between the two mounting grooves; a conveying belt adapted to the belt roller is provided 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.

[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 includes a plurality of negative pressure suction cups; sliding blocks that slide in cooperation with the limiting grooves are symmetrically fixed on the peripheral side surfaces of the negative pressure suction cup; a positioning plate is fixed to 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 to the bottom surface of the positioning plate; a first electric push rod electrically connected to the output end of the controller is fixed on the surface of the L-shaped plate; a blocking rod that 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 the external vacuum pump through a pipeline.

[0010] The present invention is further configured as follows: 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 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 side surfaces of the mounting plate; and the telescopic ends of the second electric push rods are fixedly connected to the corresponding slides.

[0012] The present invention is further configured as follows: the airflow power component includes a Z-shaped cover that is plugged into the Z-shaped conveying box; the Z-shaped conveying box is provided with two groups of conveying channels connected to it; the Z-shaped cover is provided with two groups of sealing shells that slide with the corresponding conveying channels; the sealing shells and the Z-shaped cover are provided with matching mounting holes; the side of the Z-shaped cover is connected to two groups of mounting boxes; 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 the external blower and the negative pressure pump through pipes.

[0013] The present invention is further configured as follows: the first clamping portion and the second clamping portion each include a sleeve that slidably cooperates with a corresponding guide box; the Z-shaped welding ribbon is slidably arranged between the two sleeves; an upper ear plate is fixed to the top of the sleeve on the first clamping portion; a lower ear plate is fixed to the bottom of the sleeve on the second clamping portion; the upper ear plate and the lower ear plate are both provided with guide holes; the two guide boxes on the Z-shaped conveying box are respectively provided with sliding grooves that slidably cooperate with the corresponding upper ear plate and lower ear plate; guide rods are fixed to 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 provided 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 portion symmetrically threaded and rotatably provided on the bidirectional screw rod and slidably engaged with the corresponding guide rod; the sliding portion includes a connecting plate; a sliding hole slidably engaged with the guide rod is provided on the side of the connecting plate, and a screw hole rotatably engaged 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 engaged 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 to the end of the sleeve; a splint is slidably arranged inside the sleeve; a reset spring is fixedly connected between the splint and the inner wall of the sleeve; an iron block is fixed to the side of the splint; and an electromagnetic suction cup electrically connected to the output end of the controller is fixed to the inner wall of the sleeve.

[0015] The present invention is further configured as follows: the welding portion includes a fixed 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 fixed plate; a fixed 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 fixed 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 fixed 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] The present invention conveys each group of battery cells into 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 end to end contact. By activating the negative pressure adsorption part, each group of adjacent battery cells is placed at equal intervals. By synchronously activating each airflow power component, the Z-shaped welding ribbon in the corresponding Z-shaped conveying box is conveyed to the interior of the conveying box, and one end of the Z-shaped welding ribbon is affixed to the top of the corresponding battery cell, and the other end 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 ribbon, replacing the traditional method of staggered placement of battery cells and Z-shaped welding ribbons in sequence, optimizing the process, and improving the efficiency of string welding.

[0018] The present invention realizes stable clamping of each group of Z-shaped welding ribbons through the coordinated use of the sliding part, 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 string welding process, resulting in cold welding or even desoldering, thereby improving the quality of the string welding. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 For the present invention Figure 2 Schematic diagram of the structure from the front view angle.

[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 Schematic diagram of the structure of the negative pressure adsorption part of the present invention.

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

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

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

[0028] Figure 10For the present invention Figure 9 Schematic diagram of the structure from the front view angle.

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

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

[0031] In the figure: 1. Conveyor rack; 2. Welding unit; 3. Conveyor box; 4. Conveyor plate; 5. Cell; 6. Z-shaped welding ribbon; 7. Z-shaped conveyor box; 8. Airflow dynamic component; 9. Negative pressure adsorption unit; 10. Mounting plate; 11. Slide; 12. Slide plate; 13. Baffle plate; 14. Guide box; 15. First clamping unit; 16. Second clamping unit; 17. Mounting slot; 18. Belt roller; 19. Conveyor belt; 20. Servo motor; 21. Controller; 22. Sliding port; 23. Limiting slot; 24. Negative pressure suction cup; 25. Slider; 26. Positioning plate; 27. L-shaped plate; 28. First electric push rod; 29. Baffle rod; 30. Air pump; 31. Conveyor 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. Delivery 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. Drive motor; 55. Sliding part; 56. Connecting plate; 57. Sliding hole; 58. Screw hole; 59. Threaded pipe; 60. Connecting rod; 61. Extension plate; 62. Clamp; 63. Return spring; 64. Iron block; 65. Electromagnetic chuck; 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 of the embodiments in this application can 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 meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0034] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect 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 1, please refer to Figure 1-12 , the present invention provides the following technical solutions:

[0036] The utility model relates to a dislocation-proof string welding machine, specifically, comprising 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 fixed on the top and 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 ribbons 6 coated with tin alloy are slidably arranged on the conveying plate 4; a plurality of Z-shaped conveying boxes 7 are penetrated and connected on both opposite sides of the conveying box 3; an airflow power component 8 is fixed 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 fixed on the top and bottom of the conveying box 3; a slide groove 11 is provided on both sides of the corresponding mounting plate 10 on the top and bottom of the conveying box 3; a slide plate 12 is slidably arranged inside the slide groove 11; a baffle 13 is fixed at the bottom of the slide plate 12; a guide box 14 connected to it is symmetrically fixed on the two opposite sides of the Z-shaped conveying box 7; a first clamping part 15 and a second clamping part 16 are slidably arranged inside the two guide boxes 14.

[0037] Working principle of this embodiment 1:

[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 end to end touching each other. By starting the negative pressure adsorption part 9, each group of adjacent battery cells 5 is placed at equal intervals. 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 inside of 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 is attached to the bottom of the adjacent battery cell 5, completing the synchronous placement of multiple groups of battery cells 5 and Z-shaped welding ribbons 6, replacing the traditional method of placing battery cells 5 and Z-shaped welding ribbons 6 in an alternating manner, optimizing the process, and improving the efficiency of string welding.

[0039] For example 2, please refer to Figure 1-12, this embodiment 2 makes the following improvements on the basis of embodiment 1. Specifically, mounting grooves 17 are symmetrically opened on the surface of the conveying plate 4; a belt roller 18 is rotatably arranged between the two mounting grooves 17; a conveying belt 19 adapted to the belt roller 18 is arranged 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 number of negative pressure suction cups 24; sliders 25 that slide with the limiting grooves 23 are symmetrically fixed on the side surfaces 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 fixed to 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 that is 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 that slides 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 mounted on the side of the L-shaped plate 27; a delivery pipe 31 is provided in communication with the output end of the air pump 30; a one-way valve 32 is provided 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 provided 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, the corresponding conveyor belt 19 is driven to drive, and each group of battery cells 5 is placed on the conveyor plate 4 in turn. The driven conveyor belt 19 transports each group of battery cells 5 to the inside of the conveyor box 3. The outermost battery cell 5 near the outlet end of the conveyor box 3 is blocked by the blocking rod 29. Under the transmission action of the conveyor belt 19, each group of adjacent battery cells 5 is brought into contact 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 extracted 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 turned off, 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 port 22, and the corresponding tension spring 46 is stretched. Each group of negative pressure suction cups 24 drives the adsorbed 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 of adjacent battery cells 5 in each group (the negative pressure suction cup 24 connected to the positioning plate 26 remains stationary, and its corresponding adsorbed battery cell 5 remains stationary).

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

[0046] The airflow power component 8 includes a Z-shaped cover 39 that is 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 that slide 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 provided on 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 portion 15 and the second clamping portion 16 each include a sleeve 47 that slides 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 portion 15; a lower ear plate 49 is fixed to the bottom of the sleeve 47 on the second clamping portion 16; both the upper ear plate 48 and the lower ear plate 49 are provided with guide holes 50; the two guide boxes 14 on the Z-shaped conveying box 7 are respectively provided with sliding grooves 73 that slide with the corresponding upper ear plate 48 and the lower ear plate 49; 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 provided between 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 provided 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 its side below the sliding hole 57; a threaded tube 59 is symmetrically fixed on the side of the connecting plate 56; a connecting rod 60 slidably matched with the corresponding guide hole 50 is screwed into the threaded tube 59.

[0048] An extension plate 61 is fixed to the end of the sleeve 47; a splint 62 is slidably provided inside the sleeve 47; a return spring 63 is fixedly connected between the splint 62 and the inner wall of the sleeve 47; an iron block 64 is fixed to the side of the splint 62; an electromagnetic suction cup 65 electrically connected to the output end of the controller 21 is fixed to 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 13 at its bottom are driven to slide synchronously in the direction away from the mounting plate 10, so as to block the corresponding Z-shaped welding strip 6; the driving 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 approach each other, and through the connecting rod 60, drive each group of first clamping parts 15 and second clamping parts 16 to slide along the corresponding guide box 14 toward the inside of the conveying box 3, and stop at the designated position where the clamping plate 62 extends into the conveying box 3.

[0051] The external blower is controlled to start and the 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 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 misaligned during the sliding process. When the innermost Z-shaped welding ribbon 6 slides against the side of the corresponding 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 to clamp the corresponding Z-shaped welding ribbon 6. 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 is attached to the bottom of the adjacent battery cell 5, completing the synchronous placement of multiple groups of battery cells 5 and Z-shaped welding ribbons 6, replacing the traditional method of staggered placement of battery cells 5 and Z-shaped welding ribbons 6 in sequence, optimizing the process and improving the efficiency of string welding.

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

[0053] For example 4, please refer to Figure 1-12 , this fourth embodiment makes the following improvements on the basis of the third embodiment. Specifically, the welding part 2 includes a fixing plate 66 fixedly mounted 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 soldering ribbons 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 soldering ribbons 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 its bottom to slide synchronously. The heat of the soldering iron tips 71 melts the tin alloy of the Z-shaped soldering ribbons 6, thereby welding the Z-shaped soldering ribbons 6 to the corresponding positions of the corresponding battery cells 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 conveyor box 3 in sequence through the conveyor belt 19. The outermost battery cells 5 near the exit end of the conveyor box 3 are blocked by the blocking rod 29. Each group of battery cells 5 is connected end to end in sequence. By activating 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 ribbon 6 in the corresponding Z-shaped conveying box 7 to the inside of 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 is attached to the bottom of the adjacent battery cell 5, completing the synchronous placement of multiple groups of battery cells 5 and Z-shaped welding ribbons 6; 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 ribbons 6 is achieved.

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

[0060] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts 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, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0062] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0063] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0064] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A dislocation-proof string welding machine, comprising a conveyor frame and a welding portion fixedly mounted on the top thereof; characterized in that: The conveyor rack includes a conveyor box; conveyor plates are fixed to the top and bottom of the conveyor box; the conveyor plates convey a plurality of battery cells that slide with the inner wall of the conveyor box; and a plurality of Z-shaped solder strips coated with tin alloy are slidably arranged on the conveyor plates. The two opposite sides of the conveying box are connected and connected with a plurality of Z-shaped conveying boxes; the ends of the Z-shaped conveying boxes are fixed with airflow power components; the bottom surface of the conveying box is slidably provided with a negative pressure adsorption part; The top and bottom of the conveying box are fixed with mounting plates; the top and bottom of the conveying box are provided with chutes on both sides of the corresponding mounting plates; a slide plate is slidably arranged inside the chutes; a baffle is fixed at the bottom of the slide plate; Guide boxes communicating with the Z-shaped conveying box are symmetrically fixed on two opposite sides of the Z-shaped conveying box; a first clamping portion and a second clamping portion are slidably provided inside the two guide boxes respectively; The conveying plate surface is symmetrically provided with mounting grooves; the conveying plate surface is located between the two mounting grooves and a sliding opening is provided; limiting grooves are symmetrically provided on both sides of the inner wall of the sliding opening; the negative pressure adsorption part includes a plurality of negative pressure suction cups; the circumferential side surfaces of the negative pressure suction cup are symmetrically fixed with sliders that slide and cooperate with the limiting grooves; 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 electrically connected to the output end of the controller is fixed on the surface of the L-shaped plate; the telescopic end of the first electric push rod is fixed with a blocking rod that slides through the positioning plate; a connecting pipe is provided in communication with the bottom of the negative pressure suction cup; the connecting pipe is connected to the exhaust end of the external vacuum pump through a pipe; An air pump electrically connected to the controller is fixedly mounted on the side of the L-shaped plate; a delivery pipe is provided in communication with the output end of the air pump; a one-way valve is provided on the delivery pipe near the air pump; a solenoid 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 to the circumferential side of the negative pressure suction cup; a piston plate slidingly engaged 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 tension springs are connected between adjacent sliders; 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 slides; The airflow power component includes a Z-shaped cover that is plugged into the Z-shaped conveying box; the Z-shaped conveying box is provided with two groups of conveying channels connected to it; the Z-shaped cover is provided with two groups of sealing shells that slide with the corresponding conveying channels; the sealing shells and the Z-shaped cover are provided with matching mounting holes; the side of the Z-shaped cover is connected to two groups of mounting boxes; the side of the mounting box is connected in turn with an air supply pipe and an air exhaust pipe; the air supply pipe and the air exhaust pipe are respectively connected to the external blower and the negative pressure pump through pipes.

2. The anti-dislocation string welding machine according to claim 1, characterized in that: 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; 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 first clamping portion and the second clamping portion each include a sleeve that slidably engages with a corresponding guide box; the Z-shaped welding ribbon is slidably disposed between the two sleeves; an upper ear plate is fixed to the top of the sleeve on the first clamping portion; a lower ear plate is fixed to the bottom of the sleeve on the second clamping portion; guide holes are formed in both the upper and lower ear plates; and sliding grooves that slidably engage with the corresponding upper and lower ear plates are respectively formed 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 is fixedly installed on the side of one of the ears that is electrically connected to the output end of the controller; a sliding part that slidably cooperates with the corresponding guide rod is symmetrically provided on the bidirectional screw rod; the sliding part includes a connecting plate; a sliding hole that slidably cooperates with the guide rod is provided on the side of the connecting plate, and a screw hole that swivels 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 that slidably cooperates with the corresponding guide hole is screwed into the threaded tube.

4. The anti-dislocation string welding machine according to claim 3, characterized in that: An extension plate is fixed to the end of the sleeve; a splint is slidably arranged inside the sleeve; a reset spring is fixedly connected between the splint and the inner wall of the sleeve; an iron block is fixed to the side of the splint; an electromagnetic suction cup electrically connected to the output end of the controller is fixed to the inner wall of the sleeve.

5. The anti-dislocation string welding machine according to claim 4, 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 fixed 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.

6. The welding method of the anti-dislocation stringer according to claim 5, characterized in that: The following steps are involved: T1. The conveyor belt conveys each group of cells into the conveyor box in sequence. The outermost cells near the exit of the conveyor box are blocked by a barrier bar. The cell groups are connected end to end. By activating the negative pressure adsorption unit, adjacent cell groups are placed at equal distances. T2. Synchronously start each set of airflow power components to deliver the Z-shaped solder ribbon in the corresponding Z-shaped conveying box to the inside of the conveying box. One end of the Z-shaped solder ribbon is attached to the top of the corresponding battery cell, and the other end is attached to the bottom of the adjacent battery cell, completing the synchronous placement of multiple groups of battery cells and Z-shaped solder 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 solder ribbons; T3. Control and start the welding part, driving each group of soldering iron tips to weld the corresponding Z-shaped solder ribbon to the corresponding battery cell.

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