Lithium ion battery welding tool

Abstract

The utility model relates to the technical field of lithium ion battery welding, in particular to a lithium ion battery welding tool. The lithium ion battery welding tool comprises a positioning base frame, and positioning pressing feet are symmetrically installed on the positioning base frame. The plurality of turnover frames are uniformly and rotatably mounted on the positioning base frame, a driving part for driving the plurality of turnover frames to turn over is mounted on the positioning base frame, a plurality of hollow battery cylinders are mounted on the turnover frames in an array manner, a fixed bracket is mounted on one side of each turnover frame, and the battery cylinders are mounted on the fixed bracket. A movable support is installed on the other side of the turnover frame, hydraulic cylinders are fixedly installed at the four corners of an inner cavity of the positioning base frame, and a bottom supporting plate is fixedly installed at the telescopic ends of the hydraulic cylinders. The number of the feeding mechanisms is multiple, and the multiple feeding mechanisms are erected above the corresponding overturning frames. The lithium ion battery welding tool has the advantages of being capable of conducting double-face welding on a lithium battery and high in welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery welding technology, and in particular to a lithium-ion battery welding fixture. Background Technology

[0002] With the continuous development of new green energy, the new energy industry has gradually taken shape. Lithium-ion batteries, due to their advantages such as high voltage and high energy density, are increasingly used in consumer electronics and power energy, and are becoming more and more popular in people's daily lives.

[0003] Currently, in the production of cylindrical lithium-ion batteries, multiple battery cells are often welded and connected in series with conductive aluminum busbars to form battery modules, and then multiple battery modules are connected in series to form battery packs. The welding quality between multiple battery cells is a crucial factor in determining the stable operation of the battery pack. Existing welding technologies, when using manual welding, suffer from unstable weld quality and high labor intensity. Currently, laser welding is used in mass production processes. In this case, the welding quality mainly depends on the clamping of the cylindrical lithium battery and the docking and fixing of the conductive aluminum busbars. A lithium-ion battery welding fixture disclosed in publication number CN219520980U relates to the field of battery fixture technology. This lithium-ion battery welding fixture includes a mounting frame, a battery cylinder, and a clamping structure located on top of the mounting frame. The clamping structure is mainly used to limit and fix the cylindrical lithium-ion battery. By placing the cylindrical lithium-ion battery to be welded on the inner wall of the battery cylinder of the welding fixture, and then fastening the cover plate to the battery cylinder, the strip conductive aluminum busbar to be welded is placed in the clamping structure groove. At this time, one side of the strip conductive aluminum busbar is in contact with the electrode of the lithium-ion battery. Then, by pushing the clamping structure towards the electrode hole, the telescopic cylinder at the inner end of the merging block squeezes the spring column, thereby achieving the effect of clamping and fixing the strip conductive aluminum busbar. This ensures that the strip conductive aluminum busbar does not deviate from the battery electrode and enables batch welding of lithium-ion batteries, greatly improving welding efficiency. However, during use, it can only clamp and weld the electrode at one end of the battery, and cannot clamp and weld both electrodes of the battery at the same time. The welding of the other electrode requires the use of another set of fixtures for clamping, resulting in low welding efficiency of lithium batteries.

[0004] Therefore, it is necessary to provide a new lithium-ion battery welding fixture to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a lithium-ion battery welding fixture.

[0006] The lithium-ion battery welding fixture provided by this utility model includes: a positioning base frame, on which positioning pressure feet are symmetrically installed;

[0007] The system includes several flipping frames, which are uniformly and rotatably mounted on a positioning base. The positioning base is equipped with a driving component for flipping the frames. Several battery tubes are arranged in an array on each flipping frame. Each battery tube is hollow and has a through hole symmetrically opened in the middle, through which a discharge slot is opened. A fixed bracket is installed on one side of each flipping frame, and a movable bracket is installed on the other side. Hydraulic cylinders are fixedly installed at the four corners of the inner cavity of the positioning base, and a base plate is fixedly installed at the telescopic end of each hydraulic cylinder.

[0008] The feeding mechanism is provided in several parts, and each feeding mechanism is used to transport the welding conductive aluminum busbar. The feeding mechanism is mounted above the corresponding flipping frame.

[0009] Preferably, the driving component includes a transmission gear, which is fixedly sleeved on the rotating shaft of the tilting frame. A rack plate is slidably mounted on the positioning base below the transmission gear, and the rack plate meshes with the transmission gear. An electric rod for driving the rack plate to slide is mounted on the positioning base.

[0010] Preferably, the fixing bracket includes a horizontal baffle, which is fixedly installed on one side of the flipping frame, and a plurality of fixing clamps are evenly installed on the horizontal baffle. One end of each fixing clamp has a through hole and a clamping arc-shaped part adapted to the cylindrical lithium-ion battery.

[0011] Preferably, the movable support includes two sets of electric rods. The two sets of electric rods are respectively installed at both ends of the flipping frame, and the telescopic ends of the two sets of electric rods are fixedly installed with a movable plate. Several movable clamping blocks are evenly installed on the movable plate.

[0012] Preferably, large positioning holes are evenly distributed on the base plate, and small positioning holes are distributed in the middle of the large positioning holes.

[0013] Preferably, the feeding mechanism includes two sets of electric rods. The two sets of electric rods are fixedly installed on the positioning base frame and distributed at both ends of the flipping frame. The telescopic ends of the two sets of electric rods are fixedly installed with support frames. The support frames are fixedly installed with guide rails. Two sets of clamping plates are symmetrically installed on the guide rails. The clamping plates are slidably connected to the guide rails and have clamping grooves.

[0014] Preferably, a bidirectional threaded rod is rotatably mounted on the support frame, and a servo motor for driving the bidirectional threaded rod to rotate is mounted on the support frame. The two sets of clamping plates are symmetrically distributed based on the middle of the bidirectional threaded rod, and both sets of clamping plates are provided with threaded holes that are threadedly connected to the bidirectional threaded rod.

[0015] Compared with related technologies, the lithium-ion battery welding fixture provided by this utility model has the following beneficial effects:

[0016] 1. This utility model provides a lithium-ion battery welding fixture. By placing the battery tube on the flipping frame, the battery inside the battery tube is positioned by the bottom plate, and with the help of the fixed bracket and the movable bracket, the lithium battery can be fixed inside the battery tube, so that the electrodes at both ends of the battery are exposed. Then, the flipping frame is driven by the driving component to flip it so that double-sided welding can be performed.

[0017] 2. By setting up a feeding mechanism, which utilizes the cooperation of an electric rod, support frame, guide rail, clamping plate, bidirectional threaded rod, servo motor and clamping groove, the conductive aluminum busbar used for welding can be easily fixed, thereby improving welding efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the lithium-ion battery welding fixture provided by this utility model;

[0019] Figure 2 Another structural schematic diagram of the lithium-ion battery welding fixture provided by this utility model;

[0020] Figure 3 A schematic diagram of the structure where the flipping frame and battery pack are separated according to this utility model;

[0021] Figure 4 A schematic diagram of the structure of the base plate provided by this utility model;

[0022] Figure 5 Provided by this utility model Figure 2 A magnified view of part A shown.

[0023] The following are the labeling elements in the diagram: 1. Positioning base frame; 11. Positioning pressure foot; 2. Tilting frame; 3. Driving component; 31. Transmission gear; 32. Rack plate; 33. Electric rod one; 4. Battery tube; 401. Through hole; 402. Discharge groove; 5. Fixed bracket; 51. Horizontal baffle; 52. Fixed clamping block; 6. Movable bracket; 61. Electric rod two; 62. Movable plate; 63. Movable clamping block; 7. Hydraulic cylinder; 8. Base plate; 801. Large positioning hole; 802. Small positioning hole; 9. Feeding mechanism; 91. Electric rod three; 92. Support frame; 93. Guide rail; 94. Clamping plate; 95. Bidirectional threaded rod; 96. Servo motor; 901. Clamping groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 5 The lithium-ion battery welding fixture provided in this embodiment includes:

[0027] Positioning base frame 1, with positioning pressure feet 11 symmetrically installed on positioning base frame 1;

[0028] A rotating frame 2 is provided, and the rotating frames 2 are evenly rotated and installed on the positioning base frame 1. The positioning base frame 1 is equipped with a driving component 3 for driving the rotating frames 2 to rotate. A number of battery tubes 4 are arranged in an array on the rotating frame 2. The battery tubes 4 are hollow and have through holes 401 symmetrically opened in the middle of the battery tubes 4, and discharge grooves 402 are opened through them. A fixed bracket 5 is installed on one side of the rotating frame 2 and a movable bracket 6 is installed on the other side. Hydraulic cylinders 7 are fixedly installed at the four corners of the inner cavity of the positioning base frame 1. The telescopic end of the hydraulic cylinder 7 is fixedly installed with a bottom support plate 8.

[0029] The feeding mechanism 9 is provided in several units, and the feeding mechanism 9 is mounted above the corresponding flipping frame 2.

[0030] The driving component 3 includes a transmission gear 31, which is fixedly sleeved on the rotating shaft of the tilting frame 2. A rack plate 32 is slidably installed on the positioning base 1 below the transmission gear 31. The rack plate 32 meshes with the transmission gear 31. An electric rod 33 for driving the rack plate 32 to slide is installed on the positioning base 1.

[0031] It should be noted that during use, the positioning base frame 1 is installed on the welding station using the positioning foot 11. Then, the hydraulic cylinder 7 is controlled to drive the bottom plate 8 to the set bottom plate position. Then, the lithium batteries to be welded are placed one by one into the battery cylinder 4 on the flipping frame 2. After all the batteries are placed, the movable bracket 6 is driven to approach the fixed bracket 5 to fix the cylindrical lithium batteries in the battery cylinder 4. Then, the conductive aluminum strip is installed above the fixed lithium batteries using the feeding mechanism 9. Then, welding is performed. After welding, the feeding mechanism 9 is reset. The electric rod 33 of the driving component 3 is controlled to drive the rack plate 32 to slide. The rack plate 32 meshes with the transmission gear 31, thereby driving the flipping frame 2 to rotate 180 degrees, so that the other end of the battery is rotated upward. Then, the feeding mechanism 9 is used to perform feeding welding, thereby completing the double-sided welding of the battery.

[0032] It is worth noting that, in order to facilitate double-sided welding, the bottom support plate 8 should be positioned so that the middle of the battery is inside the battery cylinder 4, with both ends protruding outside the battery cylinder 4. In order to facilitate material removal after welding, the width of the conductive aluminum strip should be smaller than the width of the discharge groove 402, and the length should be smaller than the inner cavity length of the flipping frame 2. In this way, after double-sided welding, after releasing the clamping of the battery by the movable bracket 6, the welded battery pack can be removed from the battery cylinder 4 as a whole, which is convenient for welding and unloading.

[0033] Furthermore, large positioning holes 801 are evenly provided on the base plate 8, and small positioning holes 802 are provided in the middle of the large positioning holes 801. This makes it easy to position the large end of the lithium battery by using the large positioning holes 801 and the small positioning holes 802 to position the small end, regardless of which end of the lithium battery is inserted into the base plate 8, thereby improving the neatness of the battery placement and facilitating positioning, clamping, and welding.

[0034] In the embodiments of this utility model, please refer to Figures 1 to 5 The fixed bracket 5 includes a horizontal baffle 51, which is fixedly installed on one side of the flipping frame 2. Several fixed clamping blocks 52 are evenly installed on the horizontal baffle 51. One end of the several fixed clamping blocks 52 is in a through hole 401 and is provided with a clamping arc-shaped part adapted to the cylindrical lithium-ion battery.

[0035] The movable support 6 includes two sets of electric rods 61. The two sets of electric rods 61 are respectively installed at both ends of the flipping frame 2, and the telescopic ends of the two sets of electric rods 61 are fixedly installed with a movable plate 62. Several movable clamping blocks 63 are evenly installed on the movable plate 62.

[0036] It should be noted that when the battery falls into the battery tube 4 and is positioned by the base plate 8, one side of the battery is close to the clamping arc of the fixed clamping block 52. Then, the electric lever 61 is activated to drive the movable plate 62 to move the movable clamping block 63 toward the fixed clamping block 52 until the battery is clamped on the fixed clamping block 52, thus completing the clamping and fixing.

[0037] In the embodiments of this utility model, please refer to Figures 1 to 5 The feeding mechanism 9 includes two sets of electric rods 91. The two sets of electric rods 91 are fixedly installed on the positioning base frame 1 and distributed at both ends of the flipping frame 2. The telescopic ends of the two sets of electric rods 91 are fixedly installed with support frames 92. The support frames 92 are fixedly installed with guide rails 93. Two sets of clamping plates 94 are symmetrically installed on the guide rails 93. The clamping plates 94 are slidably connected to the guide rails 93 and are provided with clamping grooves 901.

[0038] A bidirectional threaded rod 95 is rotatably mounted on the support frame 92, and a servo motor 96 for driving the bidirectional threaded rod 95 to rotate is mounted on the support frame 92. Two sets of clamping plates 94 are symmetrically distributed based on the middle of the bidirectional threaded rod 95, and both sets of clamping plates 94 are provided with threaded holes that are threadedly connected to the bidirectional threaded rod 95.

[0039] It should be noted that when the feeding mechanism 9 is in use, the conductive aluminum busbar is placed in the clamping groove 901 opened in the clamping plate 94. Then, the electric rod 91 is controlled to drive the entire support frame 92 to move the conductive aluminum busbar to the electrode of the battery for welding. After welding, the servo motor 96 is controlled to drive the bidirectional threaded rod 95 to rotate, thereby driving the two sets of clamping plates 94 to move away from each other along the guide rail 93, releasing the clamping of the conductive aluminum busbar. Then, it is reset and enters the next feeding cycle, thereby improving the feeding and welding speed of the conductive aluminum busbar.

[0040] The working principle of the lithium-ion battery welding fixture provided by this utility model is as follows:

[0041] In use, the positioning base frame 1 is installed on the welding station using the positioning foot 11. Then, the hydraulic cylinder 7 is controlled to drive the bottom plate 8 to the set bottom plate position. Then, the lithium batteries to be welded are placed one by one into the battery cylinder 4 on the flipping frame 2. After all the batteries are placed, the movable bracket 6 is driven to approach the fixed bracket 5 to fix the cylindrical lithium batteries in the battery cylinder 4. Then, the conductive aluminum strip is installed above the fixed lithium batteries using the feeding mechanism 9. Then, welding is performed. After welding, the feeding mechanism 9 is reset. The electric rod 33 of the drive component 3 is controlled to drive the rack plate 32 to slide. The rack plate 32 meshes with the transmission gear 31, thereby driving the flipping frame 2 to rotate 180 degrees, so that the other end of the battery is rotated upward. Then, the feeding mechanism 9 is used to feed and weld the battery, thereby completing the double-sided welding of the battery. After welding, the movable bracket 6 is released from the battery, and the welded battery pack is removed from the battery cylinder 4.

[0042] When the specific feeding mechanism 9 is in use, the conductive aluminum busbar is placed in the clamping groove 901 opened in the clamping plate 94. Then, the electric rod 91 is controlled to drive the entire support frame 92 to move the conductive aluminum busbar to the electrode of the battery for welding. After welding, the servo motor 96 is controlled to drive the bidirectional threaded rod 95 to rotate, thereby driving the two sets of clamping plates 94 to move away from each other along the guide rail 93, releasing the clamping of the conductive aluminum busbar, and then resetting to enter the next feeding cycle, thereby improving the feeding and welding speed of the conductive aluminum busbar.

[0043] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lithium-ion battery welding fixture, comprising: Positioning base frame (1), on which positioning pressure feet (11) are symmetrically installed; Its characteristic is that it further includes: A rotating frame (2) is provided, and the rotating frames (2) are evenly rotated and installed on the positioning base frame (1). The positioning base frame (1) is equipped with a driving component (3) for driving the rotating frames (2) to rotate. A number of battery tubes (4) are arranged in an array on the rotating frame (2). The battery tubes (4) are hollow, and the middle of the battery tubes (4) is symmetrically provided with through holes (401) and through holes (402). A fixed bracket (5) is installed on one side of the rotating frame (2), and a movable bracket (6) is installed on the other side of the rotating frame (2). Hydraulic cylinders (7) are fixedly installed at the four corners of the inner cavity of the positioning base frame (1). A bottom support plate (8) is fixedly installed at the telescopic end of the hydraulic cylinder (7). The feeding mechanism (9) is provided in several units, which are used to transport the welding conductive aluminum busbars. The feeding mechanism (9) is mounted above the corresponding flipping frame (2).

2. The lithium-ion battery welding fixture according to claim 1, characterized in that, The driving component (3) includes a transmission gear (31), which is fixedly sleeved on the rotating shaft of the flipping frame (2). A rack plate (32) is slidably installed on the positioning base (1) below the transmission gear (31). The rack plate (32) meshes with the transmission gear (31). An electric rod (33) for driving the rack plate (32) to slide is installed on the positioning base (1).

3. The lithium-ion battery welding fixture according to claim 1, characterized in that, The fixed bracket (5) includes a horizontal baffle (51), which is fixedly installed on one side of the flipping frame (2). A number of fixed clamping blocks (52) are evenly installed on the horizontal baffle (51). One end of each of the fixed clamping blocks (52) has a through hole (401) and a clamping arc-shaped part adapted to the cylindrical lithium-ion battery.

4. The lithium-ion battery welding fixture according to claim 1, characterized in that, The movable support (6) includes two sets of electric rods (61). The two sets of electric rods (61) are respectively installed at both ends of the flipping frame (2), and the telescopic ends of the two sets of electric rods (61) are fixedly installed with a movable plate (62). Several movable clamps (63) are evenly installed on the movable plate (62).

5. The lithium-ion battery welding fixture according to claim 1, characterized in that, Large positioning holes (801) are evenly provided on the bottom support plate (8), and small positioning holes (802) are provided in the middle of the large positioning holes (801).

6. The lithium-ion battery welding fixture according to claim 1, characterized in that, The feeding mechanism (9) includes three electric rods (91), and there are two sets of three electric rods (91). The two sets of three electric rods (91) are fixedly installed on the positioning base frame (1) and distributed at both ends of the flipping frame (2). The telescopic ends of the two sets of three electric rods (91) are fixedly installed with support frames (92). The support frames (92) are fixedly installed with guide rails (93). Two sets of clamping plates (94) are symmetrically installed on the guide rails (93). The clamping plates (94) are slidably connected to the guide rails (93) and have clamping grooves (901).

7. The lithium-ion battery welding fixture according to claim 6, characterized in that, A bidirectional threaded rod (95) is rotatably mounted on the support frame (92), and a servo motor (96) for driving the bidirectional threaded rod (95) to rotate is mounted on the support frame (92). Two sets of clamping plates (94) are symmetrically distributed based on the middle of the bidirectional threaded rod (95), and both sets of clamping plates (94) are provided with threaded holes that are threadedly connected to the bidirectional threaded rod (95).

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