Automatic shaping and welding device for nickel sheet of battery pack

Abstract

The invention relates to a battery pack nickel sheet automatic shaping and welding device which comprises a supporting frame and an annular rail arranged on the supporting frame, a driving assembly is arranged on the annular rail, two sets of rotating assemblies are arranged on one side of the annular rail, and a plurality of sets of shaping assemblies used for arranging nickel sheets are arranged on the rotating assemblies. A clamping assembly is arranged at one end of the shaping assembly, an air cylinder for pushing the shaping assembly to move upwards is arranged between the annular guide rail and the rotating assembly, a flattening assembly for conducting overlaying treatment on the nickel sheets is arranged on the other side of the annular guide rail, and a spot welding machine for welding the nickel sheets is arranged at the upper end of the flattening assembly. According to the automatic welding device for the battery nickel sheets, the nickel sheets are arranged in a staggered mode through the two rotary assemblies and the shaping assembly, then the nickel sheets are subjected to overlying treatment through the flattening assembly, and then the nickel sheets are subjected to electric welding through the spot welding machine, so that automatic welding of the battery nickel sheets is achieved, manual operation steps are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of battery mechanical automated production, and in particular to an automatic shaping and welding device for nickel sheets of a battery pack. Background Art

[0002] As a relatively mature and advanced battery, lithium battery is widely used by people due to its light weight and large storage capacity. Lithium battery has a good development trend. The research and development and promotion of various electric equipment and the vigorous development of lithium battery applications have activated the global lithium battery market. With the large-scale commercial use of new energy vehicles, the demand for new energy battery market has reached an unprecedented scale.

[0003] In a Chinese invention patent with publication number CN108296637A, a comparative document of a nickel sheet laser welding machine and a laser welding method is proposed, which specifically proposes "including a nickel sheet conveying device with a base fixed on the base, a nickel sheet welding device, a translation conveying device, a welding detection device, a defective conveying device and a flipping and unloading device, the nickel sheet welding device is arranged in front of the nickel sheet conveying device, the translation conveying device is arranged on the right side of the nickel sheet welding device, the welding detection device is arranged behind the translation conveying device, the defective conveying device is arranged on the right side of the translation conveying device, and the flipping and unloading device is arranged on the right side of the defective conveying device".

[0004] In a Chinese invention patent with publication number CN117655620A, a comparative document of an automatic welding device for lithium battery nickel sheets is proposed, which specifically proposes "including a mounting table, an integrated controller and a material discharge basket, the mounting table is fixedly mounted with an integrated controller, the mounting table is fixedly mounted with a material discharge basket, the material discharge port of the material discharge basket faces the lower left, and also includes an electric push rod I, etc., the mounting table is fixedly mounted with an electric push rod I electrically connected to the integrated controller."

[0005] The above-mentioned comparative documents also have the following defects: the device in the above-mentioned comparative document 1 realizes the automatic welding of battery nickel sheets, but before the nickel sheets are welded, the nickel sheets on the battery cells need to be manually arranged and then stacked in order; the device in the above-mentioned comparative document 2 presses and flattens the nickel sheets through a pressing block, but the material of the nickel sheet itself is relatively soft, and direct pressing can easily cause the upper nickel sheet to not be completely pressed on the next nickel sheet. For this reason, we propose an automatic shaping and welding device for battery pack nickel sheets. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies in the prior art. The present invention provides a driving assembly on an annular track, two groups of rotating assemblies are provided on one side of the annular guide rail, and several groups of shaping assemblies for arranging nickel sheets are provided on the rotating assemblies. A clamping assembly is provided at one end of the shaping assembly, and a cylinder for pushing the shaping assembly upward is provided between the annular guide rail and the rotating assembly. A flattening assembly for stacking the nickel sheets is provided on the other side of the annular guide rail, and a spot welding machine for welding the nickel sheets is provided on the upper end of the flattening assembly. The present invention staggers the nickel sheets through two groups of rotating assemblies and shaping assemblies, stacks the nickel sheets through the flattening assemblies, and then performs electric welding on the nickel sheets through the spot welding machine, thereby realizing automatic welding of battery nickel sheets, reducing manual operation steps, and improving production efficiency.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A battery pack nickel sheet automatic shaping and welding device comprises a support frame and an annular track arranged on the support frame, a driving assembly is arranged on the annular track, a plurality of bearing plates are arranged on the driving assembly, the bearing plates are used to load the battery pack, two groups of rotating assemblies are arranged on one side of the annular guide rail, a plurality of shaping assemblies for arranging the nickel sheets are arranged on the rotating assemblies, the shaping assemblies move toward the battery pack through the guide rails arranged on the rotating assemblies, a clamping assembly is arranged at one end of the shaping assembly, a cylinder for pushing the shaping assembly upward is arranged between the annular guide rail and the rotating assembly, the two groups of rotating assemblies are used to stagger the nickel sheets, a flattening assembly for stacking the nickel sheets is arranged on the other side of the annular guide rail, and a spot welding machine for welding the nickel sheets is arranged on the upper end of the flattening assembly.

[0009] Preferably, the driving assembly includes a driving gear and a driven gear that rotate on a circular track, a driving motor that is arranged below the driving gear, and a rack belt that is arranged on the outer rings of the driving gear and the driven gear and meshes with them.

[0010] Preferably, the rotating assembly includes a base, a bracket a fixedly connected to the base, two rotating wheels arranged on the bracket a, a conveyor belt arranged on the rotating wheel, a motor arranged on one side of the rotating wheel, a belt arranged on the motor output shaft and the rotating wheel, and a plurality of slide grooves arranged on the conveyor belt.

[0011] Preferably, the shaping assembly includes a sliding rod, a cross bar arranged at the front end of the sliding rod, a limiting ring arranged at the other end of the sliding rod, a return spring a arranged between the limiting ring and the slide groove, a plurality of rectangular blocks arranged at the lower end of the cross bar, a sliding block arranged at the lower end of the rectangular block, a support rod longitudinally arranged at the lower end of the rectangular block, and a threaded rod transversely penetrating the plurality of rectangular blocks.

[0012] As a preference, several groups of threads are distributed on the threaded rod, and one group of threads includes a positive thread and a reverse thread.

[0013] As a preference, a return spring b is fixedly arranged on the inner wall of the slideway groove, and the other end of the return spring b is arranged on a square block, and the square block abuts against the slide rod.

[0014] Preferably, the clamping assembly includes an L-shaped block sleeved on the end of the threaded rod, a conical tooth a arranged at the end of the threaded rod, a rotating rod arranged on the L-shaped block, a conical tooth b arranged at the lower end of the rotating rod and meshing with the conical tooth a, a gear arranged at the upper end of the rotating rod, and a rack meshing with the gear and mounted on the bracket a.

[0015] As a preference, the rack comprises a tooth segment a arranged at the front end surface of the gear and a tooth segment b arranged at the rear end surface of the gear.

[0016] Preferably, the rolling assembly includes a bracket b, a plurality of fixed rollers arranged in the bracket b and distributed laterally, and rotating rollers symmetrically arranged on the fixed rollers.

[0017] As another preferred embodiment, one end of the guide rail is mounted on the bracket a, and the other end of the guide rail is rotatably arranged on the rear end of the rotating wheel, and the guide rail includes a driving section and a parallel section.

[0018] Beneficial effects of the present invention:

[0019] 1. In the present invention, two groups of rotating components are arranged on one side of the circular guide rail, and each group of rotating components is provided with a shaping component. Driven by the rotating components, the shaping components reciprocate to stagger the battery packs rotating along the circular guide rail. The nickel sheets are arranged in the process of the battery packs rotating on the circular guide rail, and the automated arrangement device reduces the labor production cost.

[0020] 2. In the present invention, the arranged nickel sheets are rolled and stacked by a flattening assembly, so that the nickel sheets are stacked one on top of another in the same direction, which is convenient for subsequent spot welding by a spot welding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 The figure is a schematic diagram of the axonometric structure of an automatic shaping and welding device for nickel sheets of a battery pack.

[0023] Figure 2 A schematic diagram of the structure of the drive component.

[0024] Figure 3 It is a schematic diagram of the structure of the rotary component.

[0025] Figure 4 It is a schematic diagram of the structure of the rotary component.

[0026] Figure 5 It is a structural diagram of the shaping component.

[0027] Figure 6 A schematic diagram of the structure of the clamping assembly.

[0028] Figure 7 Schematic diagram of the rack structure.

[0029] Figure 8 It is a structural schematic diagram of the flattening component.

[0030] In the figure: 1-support frame; 2-annular track; 3-driving assembly; 4-carrying plate; 5-battery pack; 6-rotating assembly; 7-nickel sheet; 8-shaping assembly; 9-guide rail; 10-clamping assembly; 11-cylinder; 12-rolling assembly; 13-spot welding machine; 31-driving gear; 32-driven gear; 33-driving motor; 34-toothed belt strip; 61-base; 62-bracket a; 63-rotating wheel; 64-conveyor belt; 65-motor; 66-belt; 67-slideway groove; 81-slide bar; 82-cross bar; 8 3-limiting ring; 84-reset spring a; 85-rectangular block; 86-slider; 87-support rod; 88-threaded rod; 91-driving section; 92-parallel section; 101-L-shaped block; 102-conical tooth a; 103-rotating rod; 104-conical tooth b; 105-gear; 106-rack; 121-bracket b; 122-fixed roller; 123-rotating roller; 671-reset spring b; 672-square block; 881-positive thread; 882-reverse thread; 1061-tooth segment a; 1062-tooth segment b. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Embodiment 1

[0033] Reference Figure 1-8, a battery pack nickel sheet automatic shaping and welding device, comprising a support frame 1 and an annular track 2 arranged on the support frame 1, the annular track 2 is provided with a driving assembly 3, the driving assembly 3 is provided with a plurality of bearing plates 4, the bearing plates 4 are used to load battery packs 5, two groups of rotating assemblies 6 are provided on one side of the annular guide rail 2, and the rotating assemblies 6 are each provided with a plurality of shaping assemblies 8 for arranging nickel sheets 7, the shaping assemblies 8 are moved toward the battery pack 5 through a guide rail 9 erected on the rotating assembly 6, a clamping assembly 10 is provided at one end of the shaping assembly 8, a cylinder 11 for pushing the shaping assembly 8 upward is provided between the annular guide rail 2 and the rotating assembly 6, the two groups of rotating assemblies 6 are used to stagger the nickel sheets 7, a flattening assembly 12 for stacking the nickel sheets 7 is provided on the other side of the annular guide rail 2, and a spot welding machine 13 for welding the nickel sheets is provided at the upper end of the flattening assembly 12.

[0034] Reference Figure 2 The driving assembly 3 includes a driving gear 31 and a driven gear 32 that rotate on the annular track 2, a driving motor 33 that is arranged below the driving gear 31, and a rack belt 34 that is arranged on the outer rings of the driving gear 31 and the driven gear 32 and meshes with them.

[0035] It is worth mentioning here that the supporting plate 4 slides on the annular guide rail 2 driven by the toothed belt strip 34, which reduces the load on the supporting plate 4, makes the battery pack 5 more stable on the supporting plate 4, and prolongs the service life of the device.

[0036] Reference Figure 3-4 The rotating assembly 6 includes a base 61, a bracket a62 fixedly connected to the base 61, two rotating wheels 63 arranged on the bracket a62, a conveyor belt 64 arranged on the rotating wheel 63, a motor 65 arranged on one side of the rotating wheel 63, a belt 66 arranged on the output shaft of the motor 65 and the rotating wheel 63, and a plurality of slide grooves 67 arranged on the conveyor belt 64.

[0037] In this embodiment, the conveyor belt 64 is made of steel material, and its hardness and deformation resistance allow the shaping component 8 to operate under the drive of the conveyor belt 64.

[0038] Reference Figure 5 The shaping component 8 includes a slide bar 81, a cross bar 82 arranged at the front end of the slide bar 81, a limit ring 83 arranged at the other end of the slide bar 81, a return spring a84 arranged between the limit ring 83 and the slideway groove 67, a plurality of rectangular blocks 85 arranged at the lower end of the cross bar 82, a slider 86 arranged at the lower end of the rectangular block 85, a support rod 87 longitudinally arranged at the lower end of the rectangular block 85, and a threaded rod 88 horizontally penetrating the plurality of rectangular blocks 85.

[0039] It is worth mentioning that, by providing a slider 86 at the lower end of the rectangular block 85 , it is possible to ensure that the rectangular block 85 can slide within a position defined on one side of the battery pack 5 .

[0040] Reference Figure 6 There are several groups of threads distributed on the threaded rod 88, and one group of threads includes a positive thread 881 and a reverse thread 882.

[0041] In this embodiment, by providing multiple groups of threads, two adjacent groups of support rods 87 can be synchronously moved closer or farther apart during rotation.

[0042] Reference Figure 5 A return spring b671 is fixedly arranged on the inner wall of the slideway groove 67 , and the other end of the return spring b671 is arranged on a square block 672 , and the square block 672 abuts against the slide rod 81 .

[0043] It is worth mentioning here that, through the abutment of the square block 672 against the slide bar 81 , the slide bar 81 can be moved in the slideway groove 67 close to the conveyor belt 64 and be limited.

[0044] Reference Figure 6-7 The clamping assembly 10 includes an L-shaped block 101 sleeved on the end of the threaded rod 88, a conical tooth a102 arranged at the end of the threaded rod 88, a rotating rod 103 arranged on the L-shaped block 101, a conical tooth b104 arranged at the lower end of the rotating rod 103 and meshing with the conical tooth a102, a gear 105 arranged at the upper end of the rotating rod 103, and a rack 106 meshing with the gear and mounted on the bracket a62.

[0045] In this embodiment, the gear 105 rotates on the rack 106 to drive the conical gear a102 and the conical gear b104 to rotate, driving the threaded rod 88 to rotate, so that the support rods 87 on the threaded rod 88 approach each other in pairs and clamp the nickel sheet 7.

[0046] Reference Figure 7 The rack 106 includes a tooth segment a1061 disposed on the front end surface of the gear 105 and a tooth segment b1062 disposed on the rear end surface of the gear 105 .

[0047] It is worth mentioning here that by providing tooth segments at the front and rear ends of the gear 105, the support rods 87 arranged on the threaded rod 88 can be moved from a state of being close to each other to being away from each other, so as to facilitate the arrangement of the nickel sheets 7 on the next group of battery packs 5.

[0048] Reference Figure 8 The rolling assembly 12 includes a bracket b121, a plurality of fixed rollers 122 arranged in a transverse arrangement in the bracket b121, and a rotating roller 123 symmetrically arranged on the fixed roller 122.

[0049] In this embodiment, the nickel sheet 7 can be rolled in the same direction by two sets of symmetrical rotating rollers 123, so that the nickel sheet 7 is in a state where the upper sheet presses the lower sheet, which is convenient for the subsequent spot welding machine 13 to perform spot welding on it.

[0050] Reference Figure 3 One end of the guide rail 9 is mounted on the bracket a62, and the other end of the guide rail 9 is rotatably set on the rear end of the rotating wheel 63. The guide rail 9 includes a driving section 91 and a parallel section 92.

[0051] It is worth mentioning here that by rotating the guide rail 9 at the rear end of the rotating wheel 63, the support rod 87 can be restricted from extending toward the rear end through the return spring a84, and will not interfere with the setting of the motor 65.

[0052] The working process is as follows

[0053] The driving motor 33 is started to drive the driving gear 31 and the rack belt 34 to rotate on the annular guide rail 2. The carrying plate 4 is arranged on the rack belt 34 and slides on the annular guide rail 2. The unsorted battery packs 5 are placed on the carrying plate 4 manually or by a robot.

[0054] When the battery pack 4 passes through the rotary assembly 6, the slide bar 81 on the shaping assembly 8 moves toward the battery pack 5 under the action of the guide rail 9, and the slide bar 81 drives the support rod 87 at the lower end to be inserted into the middle of the two nickel sheets 7. When the gear 105 passes through the tooth segment a1061 on the rack 106, the gear 105 rotates to drive the conical teeth a102 and the conical teeth b104 below to rotate, thereby driving the threaded rod 88 to rotate, so that the adjacent support rods 87 are close to each other to clamp the nickel sheet 7. When passing through the cylinder 11, the shaping assembly 8 is lifted upward by the cylinder 11, so that the nickel sheet 7 can be vertically shaped; the two groups of shaping assemblies 8 perform staggered sorting on the nickel sheets 7;

[0055] When the arranged battery pack 5 passes through the flattening assembly 12 , the rotating roller 123 rolls on the nickel sheet 7 , so that the nickel sheets 7 are all stacked in the same direction, and then spot welded by the spot welding machine 13 .

[0056] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A battery pack nickel sheet automatic shaping welding device, comprising a support frame (1) and a ring track (2) arranged on the support frame (1), characterized in that: The annular track (2) is provided with a driving assembly (3), the driving assembly (3) is provided with a plurality of bearing plates (4), the bearing plates (4) are used to load the battery pack (5), two groups of rotating assemblies (6) are provided on one side of the annular guide rail (2), the rotating assemblies (6) are provided with a plurality of shaping assemblies (8) for arranging the nickel sheets (7), the shaping assemblies (8) are moved toward the battery pack (5) via a guide rail (9) mounted on the rotating assemblies (6) The shaping component (8) is movable, a clamping component (10) is arranged at one end of the shaping component (8), a cylinder (11) for pushing the shaping component (8) upward is arranged between the annular guide rail (2) and the rotary component (6), the two groups of rotary components (6) are used to stagger the nickel sheets (7), a flattening component (12) for laminating the nickel sheets (7) is arranged on the other side of the annular guide rail (2), and a spot welding machine (13) for welding the nickel sheets is arranged at the upper end of the flattening component (12).

2. The battery pack nickel sheet automatic shaping and welding device according to claim 1, characterized in that: The driving assembly (3) comprises a driving gear (31) and a driven gear (32) which are arranged to rotate on the annular track (2), a driving motor (33) which is arranged below the driving gear (31), and a rack belt (34) which is arranged on the outer rings of the driving gear (31) and the driven gear (32) and meshes with them.

3. The battery pack nickel sheet automatic shaping and welding device according to claim 1, characterized in that: The rotary assembly (6) comprises a base (61), a bracket a (62) fixedly connected to the base (61), two rotating wheels (63) arranged on the bracket a (62), a conveyor belt (64) arranged on the rotating wheels (63), a motor (65) arranged on one side of the rotating wheels (63), a belt (66) arranged on the output shaft of the motor (65) and the rotating wheels (63), and a plurality of slide grooves (67) arranged on the conveyor belt (64).

4. The battery pack nickel sheet automatic shaping and welding device according to claim 1, characterized in that: The shaping assembly (8) comprises a slide bar (81), a cross bar (82) arranged at the front end of the slide bar (81), a limit ring (83) arranged at the other end of the slide bar (81), a return spring a (84) arranged between the limit ring (83) and the slideway groove (67), a plurality of rectangular blocks (85) arranged at the lower end of the cross bar (82), a slider (86) arranged at the lower end of the rectangular block (85), a support rod (87) arranged longitudinally at the lower end of the rectangular block (85), and a threaded rod (88) transversely penetrating the plurality of rectangular blocks (85).

5. The battery pack nickel sheet automatic shaping and welding device according to claim 4, characterized in that: The threaded rod (88) is provided with a plurality of groups of threads, wherein one group of threads includes a positive thread (881) and a reverse thread (882).

6. The battery pack nickel sheet automatic shaping and welding device according to claim 3, characterized in that: A return spring b (671) is fixedly arranged on the inner wall of the slideway groove (67), and the other end of the return spring b (671) is arranged on a square block (672), and the square block (672) is in contact with the slide rod (81).

7. The battery pack nickel sheet automatic shaping and welding device according to claim 1, characterized in that: The clamping assembly (10) comprises an L-shaped block (101) sleeved on the end of a threaded rod (88), a conical tooth a (102) arranged at the end of the threaded rod (88), a rotating rod (103) arranged on the L-shaped block (101), a conical tooth b (104) arranged at the lower end of the rotating rod (103) and meshing with the conical tooth a (102), a gear (105) arranged at the upper end of the rotating rod (103), and a rack (106) meshing with the gear and mounted on a bracket a (62).

8. The battery pack nickel sheet automatic shaping and welding device according to claim 6, characterized in that: The rack (106) comprises a tooth segment a (1061) arranged on the front end surface of the gear (105) and a tooth segment b (1062) arranged on the rear end surface of the gear (105).

9. The battery pack nickel sheet automatic shaping and welding device according to claim 1, characterized in that: The rolling assembly (12) comprises a bracket b (121), a plurality of fixed rollers (122) arranged in a transverse arrangement in the bracket b (121), and rotating rollers (123) symmetrically arranged on the fixed rollers (122).

10. The battery pack nickel sheet automatic shaping and welding device according to claim 1, characterized in that: One end of the guide rail (9) is mounted on a bracket a (62), and the other end of the guide rail (9) is rotatably arranged on the rear end of a rotating wheel (63). The guide rail (9) comprises a driving section (91) and a parallel section (92).

Images