Tool table for stitch welding of lithium ion battery tabs

Abstract

The utility model discloses a lithium ion battery tab stitch welding tool table which comprises a base, a fixed bearing plate and a movable bearing plate are respectively installed on the base, the fixed bearing plate is fixed on the base through four supporting columns, the movable bearing plate is installed on the base through four telescopic rods in a sliding mode, and the telescopic rods are fixed on the base. The base is further provided with a sliding mechanism, the sliding mechanism is provided with a three-section type lifting air cylinder, the three-section type lifting air cylinder is connected with the bottom of the movable bearing plate, and the upper plate face of the fixed bearing plate and the upper plate face of the movable bearing plate are each provided with a limiting mechanism and a suction cup; by means of the automatic structural design, manual operation can be replaced, the roll core on the movable bearing plate is mainly adjusted to a proper position through the sliding mechanism, then the roll core can be driven to descend through the three-section type lifting air cylinder till tabs of the two roll cores are stacked together, and therefore the efficiency of tab stitch welding is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a tooling platform for stacking welding of lithium-ion battery tabs. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have now become mainstream;

[0003] The conventional welding of the existing battery cell tabs and cover plates is to place the tabs and cover plates in a Figure 1 The fixed platform shown in the figure is then connected to the cover plate through a welding die head. Such a conventional welding process method will cause the problem of excessive temperature rise when the battery cell is discharged at a large rate, which is not conducive to the service life and safety of the lithium battery.

[0004] In order to improve this defect, most manufacturers will stack the battery tabs together. However, the existing fixed platform is too simple and not convenient for stacking the battery tabs. Workers are often required to manually stack and weld them. This operation is inefficient and not conducive to improving the production efficiency of battery cells. Therefore, it is necessary to design a tooling table for assisting the stacking of battery tabs. Summary of the invention

[0005] The utility model aims to provide a tooling platform for stack welding of lithium-ion battery tabs to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a workbench for stack welding of lithium-ion battery tabs, comprising a base, on which a fixed bearing plate and a movable bearing plate are respectively installed, the fixed bearing plate is fixed to the base by four support columns, and the movable bearing plate is slidably installed on the base by four telescopic rods, and a sliding mechanism is also installed on the base, and a three-stage lifting cylinder is installed on the sliding mechanism, and the three-stage lifting cylinder is connected to the bottom of the movable bearing plate, and the upper plate surfaces of the fixed bearing plate and the movable bearing plate are provided with limiting mechanisms and suction cups.

[0007] Preferably, the sliding mechanism includes an electric screw, which is transversely installed in a groove of the base plate, the bottom of the three-stage lifting cylinder is fixed on the mover of the electric screw, and the piston rod end of the three-stage lifting cylinder.

[0008] Preferably, the limiting mechanism comprises a U-shaped limiting frame, a group of elastic elements relative to each other are arranged on both sides of the inner wall of the U-shaped limiting frame, and each of the elastic elements is connected to a positioning block;

[0009] The suction cup is located in the U-shaped limiting frame.

[0010] Preferably, a first silicone pad is provided on the rear inner wall of the U-shaped limiting frame, and a second silicone pad is provided on the outer wall of each positioning block.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the automated structural design of the utility model can replace manual operation, mainly adjusting the winding core on the movable supporting plate to a suitable position through a sliding mechanism, and then driving the winding core to descend through a three-stage lifting cylinder until the tabs of the two winding cores are stacked together, thereby improving the efficiency of the tab stacking welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a fixed platform of the prior art;

[0013] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the base of the utility model from top view;

[0015] Figure 4 This is a schematic diagram of the structure of the utility model after the fixed load-bearing plate is placed on the winding core;

[0016] Figure 5 It is a schematic diagram of the top view of the movable bearing plate of the utility model;

[0017] Figure 6 It is a schematic diagram of the structure of the pole ear after lap welding of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 2-5 The utility model provides a technical solution: a tooling table for stacking welding of lithium-ion battery tabs, comprising a base 1, on which a fixed bearing plate 11 and a movable bearing plate 12 are respectively installed for placing winding cores, wherein the fixed bearing plate 11 is fixed to the base 1 through four supporting columns 111, and the movable bearing plate 12 is slidably installed on the base 1 through four telescopic rods 121.

[0020] Then install a sliding mechanism 2 on the base 1, and install the three-stage lifting cylinder 3 on the sliding mechanism 2, and finally connect the three-stage lifting cylinder 3 to the bottom of the movable bearing plate 12, so that the sliding mechanism can be used to push the movable bearing plate to move forward and backward, and the three-stage lifting cylinder drives the movable bearing plate to move up and down.

[0021] In addition, the upper surfaces of the fixed carrying plate 11 and the movable carrying plate 12 are both provided with a limiting mechanism 4 and a suction cup 5 so as to limit and fix the winding core.

[0022] In this embodiment, the telescopic rod 121 is slidably installed as follows: first, a slider is set at the bottom of each telescopic rod, and these sliders are respectively connected to the slide rails 14 on both sides of the base, and then the four corners of the movable bearing plate 11 are fixed to the top of the telescopic rod;

[0023] In this embodiment, the sliding mechanism 2 includes an electric screw 21, which is horizontally installed in the groove 13 of the base 1, and the electric screw is located below the movable supporting plate. Then the bottom of the three-stage lifting cylinder 3 is fixed to the mover 211 of the electric screw 21, and then the piston rod end of the three-stage lifting cylinder 3 is connected to the bottom surface of the movable supporting plate. In this way, the electric screw can be used to drive the movable supporting plate to move forward and backward, and the three-stage lifting cylinder can be used to drive the movable supporting plate to move up and down.

[0024] In this embodiment, the limiting mechanism 4 includes a U-shaped limiting frame 41, a group of elastic elements 42 are arranged on both sides of the inner wall of the U-shaped limiting frame 41, and a positioning block 43 is connected to each elastic element 42. When the positioning blocks on both sides are moved, the spacing between the two positioning blocks can be changed under the drive of the elastic elements to match the winding cores of different sizes;

[0025] In addition, the suction cup 5 is located in the U-shaped limiting frame 41. After the limiting mechanism fixes the winding core, the suction cup further absorbs and fixes the winding core to prevent the winding core from shifting when the movable supporting plate moves.

[0026] In addition, openings are provided on both sides of the U-shaped limit frame 41 to facilitate the loading and unloading of materials by the staff, by fixing a layer of the first silicone pad 411 on the inner wall of the rear side of the U-shaped limit frame 41, and then fixing a layer of the second silicone pad 431 on the outer wall of each positioning block 43, the silicone pad is used to protect the reel core to prevent the reel core from being damaged during limiting and fixing.

[0027] Working principle: Take two winding cores to be welded, and fix the two winding cores to the fixed bearing plate and the movable bearing plate respectively, wherein a cover plate is placed under the winding core pole ear located on the fixed bearing plate;

[0028] Then start the three-stage lifting cylinder to lift the winding core of the movable bearing plate to a suitable position, so as to ensure that the tab will not collide with other objects, thus causing wrinkles;

[0029] Then the sliding mechanism is started to push the movable bearing plate, driving the winding core forward until the pole ear on the winding core corresponds to the top of the pole ear of another winding core;

[0030] Then start the three-stage lifting cylinder to lower the core of the movable bearing plate until the two core pole ears are superimposed together, and finally the welding die head is lowered to weld the pole ears. The effect after welding is as follows: Figure 6 shown.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tooling table for stacking and welding tabs of lithium-ion batteries, comprising a base (1), characterized in that: A fixed bearing plate (11) and a movable bearing plate (12) are respectively mounted on the base (1); the fixed bearing plate (11) is fixed to the base (1) via four support columns (111); the movable bearing plate (12) is slidably mounted on the base (1) via four telescopic rods (121); a sliding mechanism (2) is also mounted on the base (1); a three-stage lifting cylinder (3) is mounted on the sliding mechanism (2); the three-stage lifting cylinder (3) is connected to the bottom of the movable bearing plate (12); and the upper surfaces of the fixed bearing plate (11) and the movable bearing plate (12) are both provided with a limiting mechanism (4) and a suction cup (5).

2. A tooling station for stacking welding of lithium-ion battery tabs according to claim 1, characterized in that: The sliding mechanism (2) comprises an electric screw (21), the electric screw (21) being transversely mounted in a groove (13) of the base (1), the bottom of the three-stage lifting cylinder (3) being fixed on a mover (211) of the electric screw (21), and the end of the piston rod of the three-stage lifting cylinder (3).

3. A tooling station for stacking welding of lithium-ion battery tabs according to claim 1, characterized in that: The limiting mechanism (4) comprises a U-shaped limiting frame (41), and a group of elastic elements (42) facing each other are provided on both sides of the inner wall of the U-shaped limiting frame (41), and each of the elastic elements (42) is connected to a positioning block (43); The suction cup (5) is located in the U-shaped limiting frame (41).

4. A tooling station for stacking welding of lithium-ion battery tabs according to claim 3, characterized in that: A first silicone pad (411) is provided on the rear inner wall of the U-shaped limiting frame (41), and a second silicone pad (431) is provided on the outer wall of each positioning block (43).

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