Pole lug positioning and welding tool for cylindrical secondary lithium ion battery

Abstract

The utility model relates to the field of cylindrical lithium battery tab welding, in particular to a cylindrical secondary lithium ion battery tab positioning and welding tool which comprises a mounting base, an electric push rod, a mounting frame, a connecting frame, a micro motor I, a rotating block, a shielding cover and the like. An electric push rod is fixedly connected to the mounting base; telescopic parts of the electric push rods are fixedly connected with mounting frames; a plurality of connecting frames are rotationally connected to the mounting frame; a plurality of micro motors I are mounted on the mounting frame, and rotating shafts of all the micro motors I are connected with the corresponding connecting frames; all the connecting frames are rotationally connected with rotating blocks, and all the rotating blocks are attached together to form a rotating cylinder; and all the rotating blocks are fixedly connected with shielding covers, and all the shielding covers are attached to one another. According to the utility model, the suction port is additionally arranged on the cleaning plate, the communicating pipe is additionally arranged on the shielding cover, the communicating pipe is communicated with the suction port, and the welding of the lithium battery tabs is facilitated through the exhaust gas generated when the lithium battery tabs are welded through the suction port.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical lithium battery tab welding, and more particularly to a positioning welding fixture for cylindrical secondary lithium-ion battery tabs. Background Technology

[0002] Laser welding equipment is a device that uses high-energy laser pulses to locally heat materials, melts the materials through heat conduction, and forms a specific molten pool to achieve the purpose of welding.

[0003] The tabs of cylindrical lithium batteries are typically welded using laser welding, a critical process in battery manufacturing that directly affects the battery's conductivity, safety, and lifespan.

[0004] During the electrode welding process, dirt remains at the welding point of the lithium battery electrode, which will affect the welding quality of the electrode. Utility Model Content

[0005] To overcome the drawback that residual dirt at the welding joint of lithium battery tabs can affect the welding quality during the tab welding process, this utility model provides a positioning and welding fixture for cylindrical secondary lithium-ion battery tabs.

[0006] The technical solution is as follows: A cylindrical secondary lithium-ion battery tab positioning and welding fixture, including a mounting base, an electric push rod, and a mounting frame; the electric push rod is fixedly connected to the mounting base; the telescopic part of the electric push rod is fixedly connected to the mounting frame; it also includes a connecting frame, a micro motor I, a rotating block, a shield, a micro motor II, a rotating wheel, and a cleaning plate; several connecting frames are rotatably connected to the mounting frame; several micro motors I are mounted on the mounting frame, and the rotating shafts of all micro motors I are connected to the corresponding connecting frames; rotating blocks are rotatably connected to all connecting frames, and all rotating blocks fit together to form a rotating cylinder; shields are fixedly connected to all rotating blocks, and all shields fit together; a rotating wheel is rotatably connected to the mounting frame; micro motors II are mounted on the mounting frame, and the rotating shafts of micro motors II are connected to the rotating wheels; a cleaning plate is fixedly connected inside all shields.

[0007] Optionally, all the shields have curved edges.

[0008] Optionally, it also includes rubber strips; rubber strips are fixed to all the curved edges.

[0009] Optionally, all cleaning plates are equipped with suction ports, all shields are equipped with connecting pipes, and all connecting pipes are connected to the corresponding cleaning plates.

[0010] Optionally, all cleaning plates have an upward bulge in the middle.

[0011] Optionally, all shields are provided with a friction layer.

[0012] Optionally, the shield and the friction layer are detachably connected.

[0013] The present invention has the following advantages: The present invention cleans the lithium battery welding joint by cleaning plate, which improves the cleanliness of the lithium battery welding joint and facilitates the welding of the electrode tab. After cleaning the lithium battery welding joint, the lithium battery is further fixed by shielding cover, which increases the stability of the lithium battery welding and makes the welding of the lithium battery electrode tab better.

[0014] This invention adds a suction port to the cleaning plate and a connecting pipe to the shield, allowing the suction port to dissipate the waste gas generated during the welding of lithium battery tabs, thus facilitating the welding of lithium battery tabs.

[0015] This invention features an arc edge on the shield, which fits snugly against the lithium battery when the shield comes into contact with it, allowing for better contact between the shield and the battery. Furthermore, a rubber strip is added to the arc edge, which presses against the battery when the shield contacts it, increasing friction between the shield and the battery and providing better auxiliary fixation for the lithium battery. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the cylindrical secondary lithium-ion battery tab positioning and welding fixture disclosed in this utility model.

[0017] Figure 2 This is a state diagram of the cylindrical secondary lithium-ion battery electrode tab positioning and welding fixture disclosed in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the electric push rod, mounting frame, connecting frame, micro motor I, rotating block and shielding cover of the cylindrical secondary lithium-ion battery tab positioning and welding fixture disclosed in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the cylindrical secondary lithium-ion battery tab positioning welding fixture disclosed in this utility model, including micro motor I, rotating block, shield, micro motor II, rotating wheel, cleaning plate, rubber strip, upper arc edge of shield, and suction port on cleaning plate.

[0020] The meanings of the labels in the attached diagram are as follows: 1-Mounting base, 2-Electric push rod, 3-Mounting frame, 4-Connecting frame, 5-Miniature motor I, 6-Rotating block, 7-Shielding cover, 8-Miniature motor II, 9-Rotating wheel, 10-Cleaning plate, 11-Rubber strip, 71-Arched edge, 72-Friction layer, 101-Suction port. Detailed Implementation

[0021] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] Example

[0023] A cylindrical secondary lithium-ion battery tab positioning and welding fixture includes a mounting base 1, an electric push rod 2, and a mounting frame 3; the electric push rod 2 is fixedly connected to the mounting base 1; the telescopic part of the electric push rod 2 is fixedly connected to the mounting frame 3.

[0024] It also includes a connecting frame 4, a micro motor I 5, a rotating block 6, a shield 7, a micro motor II 8, a rotating wheel 9, and a cleaning plate 10; two connecting frames 4 are rotatably connected to the mounting frame 3; two micro motors I 5 are mounted on the mounting frame 3, and the rotating shafts of all micro motors I 5 are connected to the corresponding connecting frame 4; rotating blocks 6 are rotatably connected to all connecting frames 4, and all rotating blocks 6 are fitted together to form a rotating cylinder; shields 7 are fixedly attached to all rotating blocks 6, and all shields 7 are fitted together; a rotating wheel 9 is rotatably connected to the mounting frame 3; micro motor II 8 is mounted on the mounting frame 3, and the rotating shaft of micro motor II 8 is connected to the rotating wheel 9; a cleaning plate 10 is fixedly attached inside all shields 7.

[0025] All the shields 7 have curved edges 71.

[0026] It also includes rubber strips 11; rubber strips 11 are fixedly attached to all the arc edges 71.

[0027] All cleaning plates 10 are equipped with suction ports 101, and all shields 7 are equipped with connecting pipes. All connecting pipes are connected to the corresponding cleaning plates 10.

[0028] All cleaning plates 10 have an upward bulge in the middle.

[0029] All shields 7 are provided with a friction layer 72.

[0030] The shield 7 and the friction layer 72 are detachably connected, which facilitates subsequent replacement.

[0031] The workflow of this utility model is as follows:

[0032] During the electrode welding process, dirt remains at the welding point of the lithium battery electrode, which will affect the welding quality of the electrode. In the current assembly line operation, the lithium battery is usually only simply fixed. In the high-efficiency assembly line operation, the lithium battery fixation is affected and it moves, which in turn affects the electrode welding.

[0033] Before using this utility model, it needs to be installed on the welding device.

[0034] When welding the tabs of a lithium battery, the welding device moves downward to weld the tabs. This utility model moves downward with the welding device. When the bottom surface of the shield 7 is at the same height as the welding point of the lithium battery, the welding device stops moving downward. Then, the electric push rod 2 is controlled to retract, driving the mounting frame 3 downward. The connecting frame 4, micro motor I 5, rotating block 6, shield 7, micro motor II 8, rotating wheel 9, cleaning plate 10, and rubber strip 11 follow and move downward. After the cleaning plate 10 contacts the welding point of the lithium battery, the electric push rod 2 stops retracting, and the micro motor II 8 is started to drive the rotating wheel 9 to rotate. The rotating wheel 9 and the shield... When the shield 7 contacts the rotating wheel 9, the rotating block 6, cleaning plate 10, and rubber strip 11 rotate accordingly. The rotating block 6 rotates on the connecting frame 4. During the rotation, the cleaning plate 10 cleans the lithium battery welding area. After the shield 7 rotates once, the cleaning of the lithium battery welding area is completed. Then, the micro motor I5 is controlled to drive the connecting frame 4 to rotate away from the rotating wheel 9. The rotating block 6 and shield 7 move accordingly. After the shield 7 contacts the lithium battery, the shield 7 assists in fixing the lithium battery. At the same time, the connecting frame 4 stops rotating. Then, the welding device continues to move downward to complete the welding of the lithium battery tabs.

[0035] Based on the above workflow, we can see that this utility model has the following effects:

[0036] The cleaning plate 10 cleans the lithium battery welding joints, improving their cleanliness and facilitating the welding of the tabs. After cleaning the lithium battery welding joints, the shield 7 assists in fixing the lithium battery, increasing the stability during welding and improving the welding of the lithium battery tabs.

[0037] The additional technical effects of this utility model are as follows:

[0038] Among them, such as Figure 4 As shown, by providing an arc edge 71 on the shield 7, when the shield 7 comes into contact with the lithium battery, the arc edge 71 fits into the lithium battery, allowing the shield 7 to make better contact with the lithium battery.

[0039] Among them, such as Figure 4As shown, by adding a rubber strip 11 to the arc edge 71, when the shield 7 comes into contact with the lithium battery, the rubber strip 11 presses on the lithium battery, increasing the friction between the shield 7 and the lithium battery, and better assisting in fixing the lithium battery.

[0040] Among them, such as Figure 3 and Figure 4 As shown, by adding a suction port 101 to the cleaning plate 10 and a connecting pipe to the shield 7, the connecting pipe is connected to the suction port 101, and the exhaust gas generated during the welding of the lithium battery tabs is removed through the suction port 101, which is beneficial to the welding of the lithium battery tabs.

[0041] Among them, such as Figure 4 As shown, by setting the middle of the cleaning plate 10 to bulge upwards, the cleaning plate 10 can better fit with the lithium battery welding joint, thereby improving the cleaning effect on the lithium battery welding joint.

[0042] Among them, such as Figure 4 As shown, by adding a friction layer 72 to the shield 7, the direct contact between the rotating wheel 9 and the shield 7 is reduced, thereby increasing the service life of the shield 7.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cylindrical secondary lithium-ion battery tab positioning and welding fixture, comprising a mounting base (1), an electric push rod (2), and a mounting frame (3); the electric push rod (2) is fixedly connected to the mounting base (1); the telescopic part of the electric push rod (2) is fixedly connected to the mounting frame (3); characterized in that, It also includes a connecting frame (4), a micro motor I (5), a rotating block (6), a shield (7), a micro motor II (8), a rotating wheel (9), and a cleaning plate (10); several connecting frames (4) are rotatably connected to the mounting frame (3); several micro motors I (5) are mounted on the mounting frame (3), and the rotating shafts of all micro motors I (5) are connected to the corresponding connecting frame (4); rotating blocks (6) are rotatably connected to all connecting frames (4), and all rotating blocks (6) are fitted together to form a rotating cylinder; shields (7) are fixedly connected to all rotating blocks (6), and all shields (7) are fitted together; a rotating wheel (9) is rotatably connected to the mounting frame (3); micro motor II (8) is mounted on the mounting frame (3), and the rotating shaft of micro motor II (8) is connected to the rotating wheel (9); a cleaning plate (10) is fixedly connected inside all shields (7).

2. The cylindrical secondary lithium-ion battery tab positioning and welding fixture according to claim 1, characterized in that, All the shields (7) have curved edges (71).

3. The cylindrical secondary lithium-ion battery tab positioning and welding fixture according to claim 2, characterized in that, It also includes rubber strips (11); rubber strips (11) are fixed to all the arc edges (71).

4. The cylindrical secondary lithium-ion battery tab positioning and welding fixture according to claim 1, characterized in that, All cleaning plates (10) are equipped with suction ports (101), and all shields (7) are equipped with connecting pipes. All connecting pipes are connected to the corresponding cleaning plates (10).

5. The cylindrical secondary lithium-ion battery tab positioning and welding fixture according to claim 4, characterized in that, All cleaning plates (10) have an upward bulge in the middle.

6. The cylindrical secondary lithium-ion battery tab positioning and welding fixture according to claim 1, characterized in that, All shields (7) are provided with a friction layer (72).

7. The cylindrical secondary lithium-ion battery tab positioning and welding fixture according to claim 6, characterized in that, The shield (7) and the friction layer (72) are detachably connected.

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