Laminated lithium battery tab welding equipment

Abstract

The invention provides laminated lithium battery tab welding equipment which comprises a rack, a feeding mechanism, a discharging mechanism and a return line, and welding parts are arranged on the side edge of the return line and used for welding a positive electrode tab and a negative electrode tab of a battery respectively; a position correcting mechanism and a transferring mechanism are arranged between the feeding mechanism and the return line, the position correcting mechanism is used for adjusting the spatial position of a battery, and the transferring mechanism is used for transferring the battery located on the position correcting mechanism to the return line; the welding part comprises a welding unit, a cutting unit and a rubberizing unit which are sequentially arranged in the conveying direction of the return line. The length direction of the battery is defined as a first direction, the width direction of the battery is defined as a second direction, the thickness direction of the battery is defined as a longitudinal direction, and the first direction, the second direction and the longitudinal direction are perpendicular to one another. According to the invention, the spatial position of the battery can be corrected before the battery is fed to a welding station, so that the assembly precision of the battery at the welding station is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, and in particular to a tab welding device for a laminated lithium battery. Background Art

[0002] After the lithium battery is stacked, the positive and negative pole ears need to be shaped and welded. In the existing welding equipment, the stacked batteries are transferred to the welding equipment through trays and other mechanisms, and then transferred to the welding equipment for welding through mechanical grippers and other equipment. During this process, the batteries are transferred multiple times. At the same time, mechanisms such as battery trays are independent equipment separated from the welding equipment. Therefore, after being loaded to the welding equipment through mechanical grippers and other equipment, there is a problem of poor battery assembly accuracy, which affects the pole ear welding yield. Summary of the invention

[0003] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a laminated lithium battery tab welding device, which corrects the spatial position of the battery before it is loaded onto the welding station, thereby ensuring the assembly accuracy of the battery at the welding station.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A laminated lithium battery tab welding device comprises a frame, a feeding mechanism, a feeding structure and a reflow line, wherein a welding portion is arranged on the side of the reflow line, which is respectively used for welding the positive tab and the negative tab of the battery; a positioning mechanism and a transfer mechanism are arranged between the feeding mechanism and the reflow line, the positioning mechanism is used for adjusting the spatial position of the battery, and the transfer mechanism is used for transferring the battery in the positioning mechanism to the reflow line; the welding portion comprises a welding unit, a cutting unit and a gluing unit which are arranged in sequence along the conveying direction of the reflow line; the length direction of the battery is defined as the first direction, the width direction of the battery is defined as the second direction, and the thickness direction of the battery is defined as the longitudinal direction, and the first direction, the second direction and the longitudinal direction are perpendicular to each other.

[0006] According to a preferred embodiment, the positioning mechanism includes a first top plate adjustably arranged on the frame; a movable beam and a fixed beam are arranged on the first top plate, the movable beam is adjustably arranged on one side of the first top plate in the second direction, and the fixed beam is fixedly arranged on the other side of the first top plate in the second direction, the movable beam can approach or move away from the fixed beam, and the first top plate can move along the first direction relative to the frame; a plurality of dynamic positioning blocks are arranged on the movable beam at intervals along the first direction; and a plurality of static positioning blocks are arranged on the fixed beam at intervals along the first direction.

[0007] According to a preferred embodiment, the alignment mechanism also includes a first seat plate, on which a first bottom plate is adjustably mounted along the first direction, the first bottom plate is located between the first top plate and the first seat plate, and the first bottom plate is fixedly connected to the first top plate; a first driving mechanism is arranged on the side of the first top plate facing the first bottom plate, on which a first extension plate is arranged to extend along the first direction, and the first driving mechanism drives the first extension plate to move along the first direction; a first driving inclined groove is arranged on the first extension plate, and a first driving roller is arranged on the movable beam to be slidably or rollingly assembled with the first driving inclined groove.

[0008] According to a preferred embodiment, a clamp for fixing the battery is arranged on the return line, and the clamp includes a second seat plate, and the upper surface of the second seat plate is provided with a longitudinal positioning block, a first reference block, a first pressure block and a second pressure block, the longitudinal positioning block is used to support the battery; the first reference block is located on one side of the longitudinal positioning block in the second direction, and the first pressure block is located on the other side of the longitudinal positioning block in the second direction, and the first pressure block can approach or move away from the first reference block along the second direction; second pressure blocks are arranged on both sides of the longitudinal positioning block in the first direction, and the second pressure block can approach or move away from the longitudinal positioning block along the first direction.

[0009] According to a preferred embodiment, an integrated beam is slidably arranged on the second seat plate, and the first pressure block is arranged on the integrated beam; a return spring is arranged between the integrated beam and the second seat plate, and the return spring acts on the integrated beam so that it always has a movement tendency along the second direction toward the longitudinal positioning block.

[0010] According to a preferred embodiment, the second pressing block and the first pressing block can synchronously approach or move away from the longitudinal positioning block.

[0011] According to a preferred embodiment, the transfer mechanism includes a third seat plate, on which are disposed a clamping claw for grabbing the battery and an unlocking rod for unlocking the clamp; the clamp also includes an unlocking wheel, which is fixedly connected to the first pressure block and / or the second pressure block, and the unlocking rod is provided with an unlocking inclined surface adapted to the unlocking wheel, and when the unlocking rod moves downward in the longitudinal direction, the unlocking wheel slides or rolls relative to the unlocking inclined surface so that the first pressure block and the second pressure block are fixed away from the longitudinal positioning block.

[0012] According to a preferred embodiment, the welding unit includes a first support, a second support and a welding machine, wherein an upper pressure plate is adjustably arranged on the first support along the longitudinal direction, an upper pressure head is arranged on the upper pressure plate, a lower pressure head corresponding to the upper pressure head is arranged on the second support, the battery is located below the upper pressure plate, and the pole ear is located between the upper pressure head and the lower pressure head; the welding machine includes an upper welding head and a lower welding head, the pole ear is located between the upper welding head and the lower welding head, and dust suction pipes are arranged at the upper welding head and the lower welding head.

[0013] According to a preferred embodiment, the cutting unit includes a tool adjustably arranged on the frame, the tool includes a driving plate and a fixed plate arranged at longitudinal intervals, a plurality of first guide columns are arranged on the fixed plate along the longitudinal extension, the driving plate is slidably connected with the first guide columns, an upper tool head is arranged on the driving plate, a lower tool head adapted to the upper tool head is arranged on the fixed plate, a leakage hole is penetrated by the fixed plate, and the leakage hole is located on the inner side of the lower tool head; the tool also includes a pressing plate, a second guide column extending along the longitudinal direction is arranged on the pressing plate, the second guide column is slidably embedded in the driving plate, the pressing plate is located on the outer side of the upper tool head, a buffer spring is arranged between the pressing plate and the driving plate, and the lower tool head is located on the longitudinal movement path of the pressing plate.

[0014] According to a preferred embodiment, the glue applying unit includes a glue preparation component and a glue applying component arranged on a frame, wherein the glue applying component includes a glue applying head, the glue applying head includes a main suction head, a secondary suction head is slidably mounted on the main suction head, the secondary suction head can slide longitudinally relative to the main suction head, a damping spring is arranged between the secondary suction head and the main suction head, the damping spring acts on the secondary suction head so that it has a tendency to move toward the battery.

[0015] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0016] The positioning mechanism of the present invention can correct the spatial position of the battery before it is loaded onto the reflow line through the transfer mechanism, which is beneficial to ensuring the loading accuracy and further beneficial to ensuring the subsequent processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1A schematic diagram of the three-dimensional structure of a welding device provided in an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the top view of the welding equipment provided by an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of the alignment mechanism provided by an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the assembly structure of the first top plate and the first extension plate provided in an embodiment of the present invention;

[0022] Figure 5 A schematic diagram of the top view of the structure of the return line provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of a first three-dimensional structure of a clamp provided in an embodiment of the present invention;

[0024] Figure 7 A second three-dimensional structural schematic diagram of the clamp provided in an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of the three-dimensional structure of a transfer mechanism provided by an embodiment of the present invention;

[0026] Fig. 9 A schematic diagram of the three-dimensional structure of a welding unit provided in an embodiment of the present invention;

[0027] Fig.10 for Fig. 9 A partial enlarged schematic diagram of the structure at A in the middle;

[0028] Fig.11 It is a schematic diagram of the structure of the electrode ear after the upper pressing head cooperates with the lower pressing head to shape the electrode ear in an embodiment of the present invention;

[0029] Fig.12 A schematic diagram of a first three-dimensional structure of a cutting unit provided in an embodiment of the present invention;

[0030] Fig.13 A second three-dimensional structural schematic diagram of a cutting unit provided in an embodiment of the present invention;

[0031] Fig.14 A schematic diagram of the three-dimensional structure of a tool provided in an embodiment of the present invention;

[0032] Fig.15 A schematic diagram of the three-dimensional structure of a glue laminating unit provided in an embodiment of the present invention;

[0033] Fig.16 A schematic diagram of the three-dimensional structure of a glue preparation assembly provided in an embodiment of the present invention;

[0034] Fig.17 for Fig.16 A partial enlarged schematic diagram of the structure at B in the middle;

[0035] Fig.18 A schematic diagram of the three-dimensional structure of the adhesive assembly provided in an embodiment of the present invention;

[0036] Fig.19 It is a schematic diagram of the structure after the tab is glued in an embodiment of the present invention.

[0037] Icons: 00, battery; 001, pole ear; 1, frame; 2, feeding mechanism; 3, positioning mechanism; 31, first seat plate; 32, first bottom plate; 33, first top plate; 34, first driving member; 35, first extension plate; 351, first driving chute; 36, moving beam; 361, moving positioning block; 362, first driving roller; 37, fixed beam; 371, static positioning block; 4, transfer mechanism; 40, third seat plate; 41, clamping claw; 42, unlocking lever; 421, unlocking inclined plane; 5, return line; 50, fixture; 511, second seat plate; 512, longitudinal positioning block ; 513, first reference block; 514, first pressing block; 515, second pressing block; 5151, second driving roller; 5152, adapter plate; 516, integrated beam; 5161, second extension plate; 51611, second driving chute; 517, unlocking wheel; 6, positive electrode welding part; 61, welding unit; 611, fourth seat plate; 612, first lower seat frame; 613, first upper seat frame; 614, welding machine; 6141, upper welding head; 6142, lower welding head; 6143, upper dust suction pipe; 6144, lower dust suction pipe; 615, first support; 616, upper pressing block plate; 6161, upper pressure head; 617, second support; 6171, lower pressure head; 61711, first step surface; 61712, second step surface; 62, cutting unit; 621, third support; 622, fifth seat plate; 623, second lower seat frame; 624, second upper seat frame; 625, fixed seat frame; 626, tool; 6261, upper cutter head; 6262, lower cutter head; 6263, press plate; 62631, air hole; 62632, second guide column; 6264, drive plate; 6265, fixed plate; 62651, leakage hole; 626 6. First guide column; 627. Material guide cylinder; 628. Material collection bin; 63. Glue sticking unit; 630. Adhesive tape; 631. Glue preparation assembly; 6311. Rack plate; 6312. Material discharge roller; 6313. Anvil block; 6314. Moving block; 6315. Glue pulling gripper; 6316. Cutter; 632. Glue sticking assembly; 6321. Mounting frame; 6322. First mounting plate; 6323. Second mounting plate; 6324. Main suction head; 6325. Auxiliary suction head; 63251. Limiting block; 7. Negative electrode welding part; X, first direction; Y, second direction; Z, longitudinal direction. DETAILED DESCRIPTION

[0038] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0041] Please refer to Figures 1 to 19 A laminated lithium battery tab welding device includes a frame 1, a loading mechanism 2, a feeding structure and a reflow line 5. A positive electrode welding part 6 and a negative electrode welding part 7 are provided on the side of the reflow line 5, which are respectively used to weld the positive electrode tab and the negative electrode tab of the battery 00. In this embodiment, the positive electrode welding part 6 and the negative electrode welding part 7 have the same structure, and the positive electrode welding part 6 is taken as an example for description below.

[0042] The positive electrode welding part 6 includes a welding unit 61, a cutting unit 62 and a gluing unit 63 which are sequentially arranged along the conveying direction of the reflow line 5. In this embodiment, in order to ensure the assembly accuracy of the battery 00 entering the reflow line 5, a positioning mechanism 3 and a transfer mechanism 4 are arranged between the feeding mechanism 2 and the reflow line 5. The positioning mechanism 3 is used to adjust the spatial position of the battery 00, and the transfer mechanism 4 is used to transfer the battery 00 in the positioning mechanism 3 to the reflow line 5.

[0043] Specifically, the alignment mechanism 3 includes a first seat plate 31 arranged on the frame 1, and the first seat plate 31 is adjustably equipped with a first bottom plate 32 through a linear module, and the first top plate 33 is fixedly installed on the first bottom plate 32. The first bottom plate 32 is between the first top plate 33 and the first seat plate 31, and there is a first adjustment space between the first top plate 33 and the first bottom plate 32. Further, the first top plate 33 is rectangular, and its length direction is parallel to the length direction of the battery 00. The first top plate 33 is provided with a movable beam 36 and a fixed beam 37. The movable beam 36 is adjustably arranged on one side of the width direction of the first top plate 33, and the fixed beam 37 is fixedly arranged on the other side of the width direction of the first top plate 33. Optionally, the movable beam 36 is slidably connected to the first top plate 33 through a slide rail slider assembly. The movable beam 36 can approach or move away from the fixed beam 37.

[0044] like Figure 3 and Figure 4 As shown, the battery 00 is mounted on the upper surface of the first top plate 33, and a plurality of dynamic positioning blocks 361 are arranged at intervals along the length direction of the battery 00 on the moving beam 36, and a plurality of static positioning blocks 371 are arranged at intervals along the length direction of the battery 00 on the fixed beam 37. The static positioning blocks 371 are the positioning references in the width direction of the battery 00. The dynamic positioning blocks 361 cooperate with the static positioning blocks 371 to realize the positioning of the battery 00 in its width direction. Further, the linear module drives the first bottom plate 32 to move along the length direction of the battery 00. A photoelectric sensor is arranged on one side of the frame 1 or the first seat plate 31 in the length direction of the battery 00 to monitor the end of the length direction of the battery 00. When the linear module drives the first seat plate 31, i.e., the battery 00, to move along its length direction and reaches the monitoring position of the photoelectric sensor, the linear module stops moving, i.e., the positioning of the battery 00 in the length direction is realized. With such a configuration, before the battery 00 is loaded to the return line 5 through the transfer mechanism 4, its spatial position can be corrected, which is conducive to ensuring the loading accuracy and further conducive to the accuracy of subsequent processing.

[0045] For the convenience of description, Figure 1 and Figure 2 Taking the assembly state shown as an example, the length direction of the battery 00 is defined as the first direction X, and the width direction of the battery 00 is defined as the second direction Y.

[0046] In this embodiment, Figure 4 As shown, the first top plate 33 is provided with a first driving mechanism, specifically a finger cylinder, on the side of the first bottom plate 32. The first driving mechanism is equipped with a first extension plate 35, which is extended along the first direction X. The first driving mechanism drives the first extension plate 35 to move along the first direction X; the first extension plate 35 is provided with a first driving inclined groove 351, and the movable beam 36 is provided with a first driving roller 362 that is slidably or rollingly assembled with the first driving inclined groove 351. Preferably, there are two first extension plates 35, which are located on both sides of the first driving member 34 in the first direction X and are driven by the first driving mechanism, so that the two ends of the movable beam 36 in the first direction X can be synchronously driven, which is conducive to improving the consistency of the movement of various parts of the movable beam 36 in the first direction X, and ensuring the positioning accuracy of the battery 00 by the positioning mechanism 3. Specifically, when the first extension plate 35 moves along the first direction X, the first driving inclined groove 351 cooperates with the first driving roller 362 to drive the movable beam 36 to move along the second direction Y.

[0047] In another embodiment, the movable beam 36 may also be directly driven by a cylinder disposed on the first top plate 33 or the fixed beam 37 .

[0048] like Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the running track of the return line 5 is rectangular, and the positive electrode welding part 6 and the negative electrode welding part 7 are located on both sides of the width direction. The return line 5 is provided with a fixture 50 for fixing the battery 00, including a second seat plate 511, and the upper surface of the second seat plate 511 is provided with a longitudinal positioning block 512, a first reference block 513, a first pressing block 514 and a second pressing block 515. The longitudinal positioning block 512 is used to support the battery 00; the first reference block 513 is located on one side of the longitudinal positioning block 512 in the second direction Y, and the first pressing block 514 is located on the other side of the longitudinal positioning block 512 in the second direction Y. The first pressing block 514 can approach or move away from the first reference block 513 along the second direction Y;

[0049] The longitudinal positioning block 512 is provided with second pressing blocks 515 on both sides of the first direction X. The second pressing blocks 515 can be moved closer to or farther away from the longitudinal positioning block 512 along the first direction X.

[0050] Furthermore, the second pressing block 515 and the first pressing block 514 can synchronously approach or move away from the longitudinal positioning block 512 .

[0051] Specifically, there are multiple first pressing blocks 514, which are integrated in the integrated beam 516. Multiple first pressing blocks 514 are spaced apart in the integrated beam 516 along the first direction X. In this embodiment, the integrated beam 516 is slidably mounted on the second seat plate 511 through a slide rail slider assembly. A return spring (not shown in the figure) is provided between the integrated beam 516 and the second seat plate 511. The return spring acts on the integrated beam 516 so that it always has a movement tendency along the second direction Y toward the longitudinal positioning block 512. In this way, the self-locking of the clamp 50 is achieved.

[0052] like Figure 7 As shown, the integrated beam 516 is provided with a second extension plate 5161, the second pressing block 515 is fixedly mounted on the adapter plate 5152, the adapter plate 5152 is slidably mounted on the second seat plate 511 through the slide rail slider assembly, the second extension plate 5161 is provided with a second driving inclined groove 51611, and the adapter plate 5152 is provided with a second driving roller 5151 that is slidably or rollingly mounted on the second driving inclined groove 51611. In this way, the linkage of the first pressing block 514 and the second pressing block 515 is realized, so that the first pressing block 514 and the second pressing block 515 have a tendency to move toward the longitudinal positioning block 512 under normal conditions through the power of the reset spring, thereby realizing the self-locking of the battery 00 on the clamp 50.

[0053] In this embodiment, Figure 8 As shown, the transfer mechanism 4 includes a third seat plate 40, on which a clamping claw 41 for grabbing the battery 00 and an unlocking rod 42 for unlocking the clamp 50 are arranged.

[0054] The unlocking wheel 517 is rotatably mounted on the integrated beam 516, and the unlocking rod 42 is provided with an unlocking inclined surface 421 adapted to the unlocking wheel 517. When the transfer mechanism 4 acts on the clamp 50, the unlocking rod 42 is between the unlocking wheel 517 and the longitudinal positioning block 512, and the unlocking inclined surface 421 is attached to the unlocking wheel 517. When the unlocking rod 42 moves downward along the longitudinal direction Z to insert into the area between the unlocking wheel 517 and the longitudinal positioning block 512, the unlocking wheel 517 slides or rolls relative to the unlocking inclined surface 421 so that the integrated beam 516 moves away from the longitudinal positioning block 512 along the second direction Y. Correspondingly, the first pressing block 514 moves away from the longitudinal positioning block 512 along the second direction Y. In this embodiment, the first pressing block 514 and the second pressing block 515 move synchronously, so that the clamp 50 can be unlocked. At this time, after the clamp 41 clamps the battery 00 from the longitudinal positioning block 512 or places it on the longitudinal positioning block 512, the third seat plate 40 moves upward along the longitudinal direction Z so that the unlocking slope 421 disengages from the unlocking wheel 517. Under the action of the reset spring, the clamp 50 resets and maintains the self-locking state.

[0055] In this embodiment, the transfer mechanism 4 is arranged between the loading mechanism 2 and the return line 5 , and between the unloading mechanism and the return line 5 .

[0056] like Fig. 9 and Fig.10 As shown, the welding unit 61 includes a fourth seat plate 611, a first lower seat frame 612, a first upper seat frame 613 and a welder 614, wherein the fourth seat plate 611 is movably disposed on the frame 1 through a slide rail slider assembly, and specifically, the fourth seat plate 611 can move along a first direction X to approach or move away from the battery 00 on the fixture 50. Further, the first lower seat frame 612 is movably disposed on the fourth seat plate 611 through a slide rail slider assembly, and the first lower seat frame 612 can move relative to the fourth seat plate 611 along a second direction Y. The first lower seat frame 612 is slidably embedded in the first upper seat frame 613, and the first upper seat frame 613 can move relative to the first lower seat frame 612 along a longitudinal direction Z. The welder 614 is installed on the first upper seat frame 613. The welding unit 61 also includes a first support 615 and a second support 617 fixedly mounted on the frame 1. An upper pressure plate 616 is adjustably arranged along the longitudinal direction Z on the first support. An upper pressure head 6161 is arranged on the upper pressure plate 616. A lower pressure head 6171 corresponding to the upper pressure head 6161 is arranged on the second support 617. When the clamp 50 runs to the welding unit 61, the battery 00 is located below the upper pressure plate 616, and the tab 001 is located between the upper pressure head 6161 and the lower pressure head 6171.

[0057] In this embodiment, a first step surface 61711 and a second step surface 61712 are arranged on the lower pressing head 6171. The first step surface 61711 is closer to the upper pressing head 6161 than the second step surface 61712. When the clamp 50 is in the welding position, the battery 00 is attached to the second step surface 61712, and the tab 001 is attached to the first step surface 61711.

[0058] When in use, the upper pressing plate 616 moves downward along the longitudinal direction Z, the upper pressing plate 616 is attached to the battery 00, and the upper pressing head 6161 is attached to the tab 001. During this process, the upper pressing head 6161 cooperates with the first step surface 61711 and the second step surface 61712 to shape the tab 001 into Fig.11 The structure shown facilitates welding the tab 001 into a solid whole.

[0059] In this embodiment, the welder 614 is an ultrasonic welder 614. The upper pressing plate 616 is slidably connected to the first support 615 through a slide rail and slider assembly, and is driven by a cylinder disposed on the first support 615 to move along the longitudinal direction Z.

[0060] The fourth seat plate 611, the first lower seat frame 612 and the first upper seat frame 613 can be driven by a cylinder or a linear drive mechanism such as a linear module, so that the welding machine 614 can move in the first direction X, the second direction Y and the longitudinal direction Z. The first direction X, the second direction Y and the longitudinal direction Z are perpendicular to each other.

[0061] Furthermore, if Fig.10 As shown, the welding machine 614 includes an upper welding head 6141 and a lower welding head 6142. An upper dust suction pipe 6143 is provided at the upper welding head 6141, and a lower dust suction pipe 6144 is provided at the lower welding head 6142. The upper dust suction pipe 6143 and the lower dust suction pipe 6144 are both connected to a negative pressure dust removal mechanism. During welding, the dust generated near the welding head can be removed through the upper dust suction pipe 6143 and the lower dust suction pipe 6144.

[0062] In some embodiments, the lower welding head 6142 is embedded in the lower dust suction pipe 6144 , and the lower welding head 6142 extends out of the lower dust suction pipe 6144 in the longitudinal direction Z.

[0063] like Figure 12 to Figure 14As shown, the cutting unit 62 includes a third support 621 arranged on the frame 1, and also includes a fifth seat plate 622, a second lower seat frame 623 and a second upper seat frame 624, wherein the fifth seat plate 622 is slidably mounted on the third support 621 through a slide rail slider assembly, and the fifth seat plate 622 can move relative to the third support 621 along a first direction X, the second lower seat frame 623 is slidably mounted on the fifth seat plate 622 through a slide rail slider assembly, and the second lower seat frame 623 can move relative to the fifth seat plate 622 along a second direction Y, and the second upper seat frame 624 is sleeved outside the second lower seat frame 623, and the second upper seat frame 624 can slide relative to the second lower seat frame 623 along a longitudinal direction Z. In this embodiment, the second upper seat frame 624 and the second lower seat frame 623 are slidably connected by the slide rail slider assembly. Further, a fixed seat frame 625 is provided on the top of the second upper seat frame 624, and a tool 626 for cutting the pole ear 001 is configured on the fixed seat frame 625.

[0064] The fifth seat plate 622, the second lower seat frame 623 and the second upper seat frame 624 can all be driven by a cylinder or a linear drive mechanism such as a linear module, so that the tool 626 can move in the first direction X, the second direction Y and the longitudinal direction Z to adjust the spatial position of the tool 626 as needed.

[0065] The cutting unit 62 further includes a material guide cylinder 627 and a material collection bin 628. The material guide cylinder 627 is disposed on the second upper frame 624. The inlet end of the material guide cylinder 627 faces the cutter 626, and the outlet end of the material guide cylinder 627 is connected to the material collection bin 628. When in use, after the fixture 50 is transported to the cutting unit 62 through the return line 5, the excess part of the tab 001 is cut by the cutter 626, and the waste is recovered into the material collection bin 628 through the material guide cylinder 627.

[0066] like Fig.14As shown, the cutter 626 comprises a driving plate 6264 and a fixing plate 6265 which are arranged at intervals in the longitudinal direction Z. A plurality of first guide posts 6266 are arranged on the fixing plate 6265 extending along the longitudinal direction Z. The driving plate 6264 is slidably connected with the first guide posts 6266. An upper cutter head 6261 is arranged on the driving plate 6264. A lower cutter head 6262 which matches the upper cutter head 6261 is arranged on the fixing plate 6265. A material leakage hole 62651 is arranged through the fixing plate 6265. The material leakage hole 62651 is located on the inner side of the lower cutter head 6262. The material guide cylinder 627 is connected to the material leakage hole 62651. In this embodiment, the driving plate 6264 is located on the upper side of the fixing plate 6265 in the longitudinal direction Z, and is driven by an electric cylinder arranged on the fixing seat frame 625 to approach or move away from the fixing plate 6265 in the longitudinal direction Z, so that the upper cutter head 6261 can approach or move away from the lower cutter head 6262. When in use, the tab 001 is located between the upper cutter head 6261 and the lower cutter head 6262 . The upper cutter head 6261 cooperates with the lower cutter head 6262 to complete the cutting of the tab 001 . Waste materials enter the material guide tube 627 through the leakage hole 62651 on the inner side of the lower cutter head 6262 and are then recovered into the collecting bin 628 .

[0067] like Fig.12 and Fig.14 As shown, the cutter 626 also includes a pressing plate 6263, on which a second guide column 62632 extending in the longitudinal direction Z is provided, and the second guide column 62632 is slidably embedded in the driving plate 6264, the pressing plate 6263 is located on the outer side of the upper cutter head 6261, and a buffer spring (not shown in the figure) is provided between the pressing plate 6263 and the driving plate 6264, and the lower cutter head 6262 is located on the movement path of the pressing plate 6263 in the longitudinal direction Z. When in use, when the upper cutter head 6261 approaches the lower cutter head 6262 in the longitudinal direction Z, the pressing plate 6263 abuts against the lower cutter head 6262 to press the tab 001, and the buffer spring can realize the flexible contact between the pressing plate 6263 and the lower cutter head 6262, so as to realize the pressing of the tab 001 without affecting the cutting action of the upper cutter head 6261 moving downward relative to the lower cutter head 6262 in the longitudinal direction Z, thereby improving the cutting accuracy of the tab 001.

[0068] like Fig.14 As shown, the pressing plate 6263 is provided with an air hole 62631, and the outlet end of the air hole 62631 is arranged toward the side of the upper cutter head 6261. The air hole 62631 is connected to the ion wind to remove impurities on the tab 001 and prevent the waste material from sticking after cutting.

[0069] like Figures 15 to 17As shown, the glue applying unit 63 includes a glue preparation component 631 and a glue applying component 632 arranged on the frame 1, wherein the glue preparation component 631 includes a frame plate 6311 arranged on the frame 1, a feeding roller 6312 is arranged on the frame plate 6311, and also includes an anvil 6313, a movable block 6314 and a glue pulling gripper 6315 arranged on the frame plate 6311, the movable block 6314 is arranged corresponding to the anvil 6313, the adhesive tape 630 passes through the gap between the movable block 6314 and the anvil 6313 to the adhesive pulling gripper 6315 from the feeding roller 6312 in sequence, and in the conveying direction of the adhesive tape 630, it also includes a cutter 6316 adjustably arranged between the movable block 6314 and the glue pulling gripper 6315, the movable block 6314 can approach or move away from the anvil 6313, and the cutter 6316 is used to cut the adhesive tape 630.

[0070] In this embodiment, the anvil 6313 is fixedly mounted on the frame 6311, the movable block 6314 is driven by a cylinder to approach or move away from the anvil 6313 along the longitudinal direction Z, and the glue pulling gripper 6315 is driven by a finger cylinder to clamp the tape 630. The finger cylinder that drives the glue pulling gripper 6315 is driven by a linear module set on the frame 6311 so that the glue pulling gripper 6315 can drag the tape 630 to a certain length in the first direction X after grabbing the tape 630, so as to facilitate the cutting of the tape 630 of a certain length by the cutter 6316.

[0071] like Fig.19 As shown in FIG. 1 , both the upper and lower sides of the tab 001 need to be glued. Therefore, Fig.16 As shown, preferably, the main structure of the glue preparation assembly 631 composed of the discharge roller 6312, the anvil block 6313, the moving block 6314, the cutter 6316 and the glue pulling gripper 6315 is divided into two groups, which are arranged at intervals in the longitudinal direction Z of the frame plate 6311.

[0072] Accordingly, if Fig.18 As shown, the glue sticking assembly 632 includes a mounting frame 6321 arranged on the frame 1 , and two groups of glue sticking heads are arranged on the mounting frame 6321 , corresponding one to one with the main structures of the two groups of glue preparation assemblies 631 .

[0073] The glue sticking head includes a first mounting plate 6322 adjustably mounted on a mounting frame 6321 along a first direction X, a second mounting plate 6323 adjustably mounted on the first mounting plate 6322 along a longitudinal direction Z, a main suction head 6324 adjustably mounted on the second mounting plate 6323 along a second direction Y, an auxiliary suction head 6325 slidably mounted on the main suction head 6324, the auxiliary suction head 6325 can slide relative to the main suction head 6324 along the longitudinal direction Z, a damping spring (not shown in the figure) is arranged between the auxiliary suction head 6325 and the main suction head 6324, the damping spring acts on the auxiliary suction head 6325 so that it has a movement tendency toward the battery 00. In this embodiment, the mounting frame 6321 is provided with a linear module for driving the first mounting plate 6322, the first mounting plate 6322 is provided with a linear module for driving the second mounting plate 6323, the second mounting plate 6323 is provided with a cylinder for driving the main suction head 6324 to move, the auxiliary suction head 6325 is slidably connected with the main suction head 6324 through a slide rail slider assembly, and the main suction head 6324 and the auxiliary suction head 6325 are both provided with a negative pressure hole (not shown in the figure) for sucking the tape 630 by negative pressure. The main suction head 6324 is provided with a limit block 63251, and a damping spring is provided between the limit block 63251 and the auxiliary suction head 6325. In this embodiment, the auxiliary suction head 6325 is used to stick the tape 630 to the battery 00, and the main suction head 6324 is used to stick the tape 630 to the pole ear 001.

[0074] When in use, the clamp 50 is driven to the glue sticking component 632 unit through the return line 5, and the main suction head 6324 and the auxiliary suction head 6325 move synchronously to the glue preparation component 631, grab the tape 630 cut by the cutter 6316, and then move toward the clamp 50 along the first direction X. Finally, the main suction head 6324 and the auxiliary suction head 6325 both move toward the battery 00 along the longitudinal direction Z. After the auxiliary suction head 6325 abuts against the battery 00 to achieve the sticking of the tape 630, the main suction head 6324 continues to move in the same direction. At this time, the auxiliary suction head 6325 is blocked by the battery 00 and compresses the damping spring. The part of the tape 630 stuck on the battery 00 is clamped and fixed by the auxiliary suction head 6325 and the battery 00. During the movement of the main suction head 6324 toward the pole ear 001, the tape 630 is gradually separated from the main suction head 6324 and stuck to the pole ear 001, which can effectively avoid the wrinkles of the tape 630 at the pole ear 001.

[0075] After completing the positive electrode tab welding, the battery 00 moves with the clamp 50 to the negative electrode welding part 7, repeats the above-mentioned actions to complete the negative electrode tab welding, and then passes through the CCD detection arranged on the frame 1, and then is unlocked and transported by the transfer mechanism 4 arranged between the reflux line 5 and the unloading mechanism. The unloading mechanism and the loading structure are the same, and both use a robot to grab the battery 00. This is the existing technology and will not be repeated here.

[0076] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A laminated lithium battery tab welding device, characterized in that: It includes a frame, a loading mechanism, a unloading structure and a reflow line, and the side of the reflow line is provided with a welding part, which is used to weld the positive pole ear and the negative pole ear of the battery respectively; A positioning mechanism and a transfer mechanism are provided between the feeding mechanism and the return line, the positioning mechanism is used to adjust the spatial position of the battery, and the transfer mechanism is used to transfer the battery in the positioning mechanism to the return line; The welding part comprises a welding unit, a cutting unit and a gluing unit which are arranged in sequence along the conveying direction of the reflow line; The length direction of the battery is defined as the first direction, the width direction of the battery is defined as the second direction, and the thickness direction of the battery is defined as the longitudinal direction. The first direction, the second direction and the longitudinal direction are perpendicular to each other.

2. The laminated lithium battery tab welding equipment according to claim 1, characterized in that: The positioning mechanism comprises a first top plate adjustably arranged on the frame; A movable beam and a fixed beam are arranged on the first top plate, the movable beam is adjustably arranged on one side of the first top plate in the second direction, the fixed beam is fixedly arranged on the other side of the first top plate in the second direction, the movable beam can approach or move away from the fixed beam, and the first top plate can move relative to the frame along the first direction; A plurality of dynamic positioning blocks are arranged on the dynamic beam at intervals along the first direction; A plurality of static positioning blocks are arranged on the fixed beam at intervals along the first direction.

3. The laminated lithium battery tab welding equipment according to claim 2, characterized in that: The alignment mechanism further comprises a first seat plate, a first bottom plate is adjustably mounted on the first seat plate along the first direction, the first bottom plate is located between the first top plate and the first seat plate, and the first bottom plate is fixedly connected to the first top plate; A first driving mechanism is arranged on the side of the first top plate facing the first bottom plate, the first driving mechanism is equipped with a first extension plate, the first extension plate is extended along the first direction, and the first driving mechanism drives the first extension plate to move along the first direction; The first extension plate is provided with a first driving inclined groove, and the movable beam is provided with a first driving roller which is slidably or rollingly assembled with the first driving inclined groove.

4. The laminated lithium battery tab welding equipment according to claim 1, characterized in that: The return line is provided with a fixture for fixing the battery, the fixture comprises a second seat plate, the upper surface of the second seat plate is provided with a longitudinal positioning block, a first reference block, a first pressing block and a second pressing block, the longitudinal positioning block is used to support the battery; the first reference block is located on one side of the longitudinal positioning block in the second direction, the first pressing block is located on the other side of the longitudinal positioning block in the second direction, and the first pressing block can approach or move away from the first reference block along the second direction; The longitudinal positioning block is provided with second pressing blocks on both sides of the first direction, and the second pressing blocks can approach or move away from the longitudinal positioning block along the first direction.

5. The laminated lithium battery tab welding equipment according to claim 4, characterized in that: An integrated beam is slidably disposed on the second seat plate, and the first pressing block is disposed on the integrated beam; A return spring is arranged between the integrated beam and the second seat plate, and the return spring acts on the integrated beam so that the integrated beam always has a movement tendency along the second direction toward the longitudinal positioning block.

6. The laminated lithium battery tab welding equipment according to claim 4, characterized in that: The second pressing block and the first pressing block can synchronously approach or move away from the longitudinal positioning block.

7. The laminated lithium battery tab welding equipment according to claim 6, characterized in that: The transfer mechanism comprises a third seat plate, on which a clamping claw for grabbing the battery and an unlocking lever for unlocking the clamp are arranged; The clamp also includes an unlocking wheel, which is fixedly connected to the first pressure block and / or the second pressure block. The unlocking rod is provided with an unlocking inclined surface adapted to the unlocking wheel. When the unlocking rod moves downward in the longitudinal direction, the unlocking wheel slides or rolls relative to the unlocking inclined surface to fix the first pressure block and the second pressure block away from the longitudinal positioning block.

8. The laminated lithium battery tab welding equipment according to claim 1, characterized in that: The welding unit comprises a first support, a second support and a welding machine, wherein: An upper pressing plate is adjustably arranged along the longitudinal direction on the first bracket, an upper pressing head is arranged on the upper pressing plate, a lower pressing head corresponding to the upper pressing head is arranged on the second bracket, the battery is located below the upper pressing plate, and the tab is located between the upper pressing head and the lower pressing head; The welding machine comprises an upper welding head and a lower welding head, the pole lug is located between the upper welding head and the lower welding head, and dust suction pipes are arranged at the upper welding head and the lower welding head.

9. The laminated lithium battery tab welding equipment according to claim 1, characterized in that: The cutting unit comprises a cutter which is adjustably arranged on the frame, the cutter comprises a driving plate and a fixing plate which are arranged at intervals in the longitudinal direction, a plurality of first guide posts are arranged on the fixing plate along the longitudinal extension, the driving plate is slidably connected with the first guide posts, an upper cutter head is arranged on the driving plate, a lower cutter head which is adapted to the upper cutter head is arranged on the fixing plate, a material leakage hole is arranged through the fixing plate, and the material leakage hole is located on the inner side of the lower cutter head; The tool also includes a pressing plate, which is provided with a second guide column extending in the longitudinal direction, and the second guide column is slidably embedded in the driving plate. The pressing plate is located on the outer side of the upper cutting head, and a buffer spring is provided between the pressing plate and the driving plate. The lower cutting head is located on the longitudinal movement path of the pressing plate.

10. The laminated lithium battery tab welding equipment according to claim 1, characterized in that: The glue sticking unit comprises a glue preparation component and a glue sticking component arranged on a frame, wherein: The glue sticking assembly comprises a glue sticking head, the glue sticking head comprises a main suction head, a secondary suction head is slidably mounted on the main suction head, the secondary suction head can slide longitudinally relative to the main suction head, a damping spring is arranged between the secondary suction head and the main suction head, the damping spring acts on the secondary suction head so that it has a movement tendency toward the battery.

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