A lithium battery tab welding device

Abstract

This utility model discloses a lithium battery tab welding device, including a frame. An electric push rod is mounted on top of the frame, and a connecting block is mounted on the output end of the electric push rod. A transmission inclined surface is formed on the lower surface of the connecting block. A bearing seat is mounted on the right side of the connecting block, and a rotating plate is movably mounted below the bearing seat. A laser light is mounted below the rotating plate, and a first return spring is mounted on the right side of the rotating plate. A transmission plate is fixedly mounted on the left side of the rotating plate, and a transmission wheel is movably mounted on the left side of the transmission plate. A controller is mounted on the left side of the frame. This utility model improves the efficiency of manual positioning by using a laser light positioned on the same vertical line as the welding head to locate the lithium battery tab to be welded, thereby ensuring welding accuracy and improving welding efficiency and precision.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to a lithium battery tab welding device. Background Technology

[0002] Lithium-ion battery tab welding is a crucial manufacturing process that firmly connects the metal foils (tabs) extending from the current collectors of the internal electrodes (positive and negative electrodes) of the battery to the external conductive posts or connecting pieces. It utilizes precision technologies such as ultrasonic welding (the most mainstream), laser welding, or resistance welding to cause interatomic diffusion fusion between the tabs (usually multiple layers of thin aluminum or copper foil) and the connectors under the action of high-frequency vibration or high-energy beams, forming a low-resistance, high-strength metallurgical bond. Welding equipment is an indispensable tool in lithium-ion battery tab welding.

[0003] Existing welding equipment used in homes or repair shops often needs to weld lithium battery tabs of various shapes and sizes. This requires workers to manually move the welding position directly under the welding head. Due to the lack of a positioning structure, manual adjustment is time-consuming and laborious, and inaccurate welding is very likely to occur. To address this, we propose a lithium battery tab welding device. Utility Model Content

[0004] The purpose of this utility model is to provide a lithium battery tab welding device to solve the problem mentioned in the background art that the existing welding equipment used in home or repair shops often needs to weld lithium battery tabs of various shapes and sizes. This requires workers to manually move the welding position directly under the welding head. Due to the lack of a positioning structure, manual adjustment is time-consuming and laborious, and inaccurate welding is very likely to occur.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery tab welding device, comprising:

[0006] The frame includes an electric push rod mounted on top, a connecting block mounted on the output end of the electric push rod, a transmission inclined surface formed on the lower surface of the connecting block, a bearing seat mounted on the right side of the connecting block, a rotating plate movably mounted below the bearing seat, a laser light mounted below the rotating plate, a first return spring mounted on the right side of the rotating plate, a transmission plate fixedly mounted on the left side of the rotating plate, a transmission wheel movably mounted on the left side of the transmission plate, and a controller mounted on the left side of the frame.

[0007] In a preferred embodiment of the lithium battery tab welding equipment of this utility model, the rotating plate is movably connected to the frame via the bearing seat, and the rotating plate is elastically connected to the frame via the first return spring.

[0008] In a preferred embodiment of the lithium battery tab welding equipment of this utility model, the diameter of the output shaft of the electric push rod is the same as the length and width of the upper surface of the connecting block, and the transmission wheel is in contact with the transmission inclined surface.

[0009] In a preferred embodiment of the lithium battery tab welding equipment of this utility model, the controller is electrically connected to the electric push rod.

[0010] As a preferred embodiment of the lithium battery tab welding equipment of this utility model, the connecting block further comprises:

[0011] A fixed plate is installed below the connecting block. A pressure sensor and four second reset springs are installed below the fixed plate. A movable plate is installed below the pressure sensor. A lifting plate is installed below the movable plate. A spring cable is threaded through the interior of the lifting plate. A welding head is installed below the lifting plate. A connecting rod is threaded through the interior of the movable plate.

[0012] In a preferred embodiment of the lithium battery tab welding equipment of this utility model, the connecting rod moves inside the movable plate, the movable plate is elastically connected to the fixed plate through the second return spring, and the connecting rod is fixedly connected to the fixed plate.

[0013] In a preferred embodiment of the lithium battery tab welding equipment of this utility model, the welding head is electrically connected to the controller via the spring cable, the welding head and the laser lamp are on the same vertical line, and the pressure sensor is electrically connected to the controller.

[0014] Compared with the prior art, this utility model provides a lithium battery tab welding device, which has the following beneficial effects:

[0015] 1. This utility model uses a laser light positioned on the same vertical line as the welding head to locate the lithium battery to be welded, thereby improving the efficiency of manual positioning by the operator, ensuring welding accuracy, and improving welding efficiency and precision.

[0016] 2. This utility model uses a pressure sensor to monitor the pressure on the welding head in real time, thereby determining when to start welding after the welding head reaches the welding point. This also facilitates the welding of tabs for lithium batteries of different shapes and heights, providing great convenience for welding tabs for lithium batteries of different shapes and sizes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the right-side structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a three-dimensional structural diagram of the connecting block of this utility model.

[0021] In the diagram: 1. Frame; 2. Controller; 3. Lifting plate; 4. Spring cable; 5. Connecting block; 6. Fixing plate; 7. Electric push rod; 8. Transmission ramp; 9. Pressure sensor; 10. Movable plate; 11. Welding head; 12. Rotating plate; 13. Laser light; 14. Bearing seat; 15. First return spring; 16. Transmission plate; 17. Transmission wheel; 18. Second return spring; 19. Connecting rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 A lithium battery tab welding device includes a frame 1, an electric push rod 7 mounted on the top of the frame 1, a connecting block 5 mounted on the output end of the electric push rod 7, a transmission inclined surface 8 formed on the lower surface of the connecting block 5, a bearing seat 14 mounted on the right side of the connecting block 5, a rotating plate 12 movably mounted below the bearing seat 14, a laser lamp 13 mounted below the rotating plate 12, a first reset spring 15 mounted on the right side of the rotating plate 12, a transmission plate 16 fixedly mounted on the left side of the rotating plate 12, a transmission wheel 17 movably mounted on the left side of the transmission plate 16, and a controller 2 mounted on the left side of the frame 1.

[0024] In this implementation plan: by setting a laser lamp 13 on the same vertical line as the welding head 11, the laser lamp 13 is used to position the lithium battery to be welded, thereby improving the efficiency of manual positioning by the staff, ensuring welding accuracy, and improving welding efficiency and precision.

[0025] Furthermore:

[0026] In an optional embodiment, the rotating plate 12 is movably connected to the frame 1 via a bearing seat 14, and the rotating plate 12 is elastically connected to the frame 1 via a first return spring 15.

[0027] In this implementation scheme: when the transmission wheel 17 returns to the transmission ramp 8, the first reset spring 15 pushes the rotating plate 12 to rotate again through its own elastic force, bringing the laser lamp 13 back below the welding head 11.

[0028] Furthermore:

[0029] In an optional embodiment, the diameter of the output shaft of the electric actuator 7 is the same as the length and width of the upper surface of the connecting block 5, and the transmission wheel 17 is in contact with the transmission inclined surface 8.

[0030] In this implementation scheme: when the transmission wheel 17 moves out of the transmission inclined plane 8, it can continue to move along the output shaft of the electric push rod 7.

[0031] Furthermore:

[0032] In an optional embodiment, the controller 2 is electrically connected to the electric actuator 7.

[0033] In this implementation scheme, the start and stop of the electric push rod 7 can be controlled by the controller 2.

[0034] Furthermore:

[0035] In an optional embodiment, the connecting block 5 further includes:

[0036] A fixed plate 6 is installed below the connecting block 5. A pressure sensor 9 and four second reset springs 18 are installed below the fixed plate 6. A movable plate 10 is installed below the pressure sensor 9. A lifting plate 3 is installed below the movable plate 10. A spring cable 4 is threaded through the inside of the lifting plate 3. A welding head 11 is installed below the lifting plate 3. A connecting rod 19 is threaded through the inside of the movable plate 10.

[0037] In this implementation scheme, the pressure sensor 9 is set to monitor the pressure on the welding head 11 in real time, thereby determining when the welding head 11 has reached the welding point and welding is to be carried out. At the same time, it facilitates the welding of tabs for lithium batteries of different shapes and heights, providing great convenience for welding tabs for lithium batteries of different shapes and sizes.

[0038] Furthermore:

[0039] In an optional embodiment, the connecting rod 19 moves inside the movable plate 10, which is elastically connected to the fixed plate 6 via a second return spring 18, and the connecting rod 19 is fixedly connected to the fixed plate 6.

[0040] In this implementation scheme: the second reset spring 18 exerts its own elastic force on the movable plate 10 in a direction away from the fixed plate 6, so as to prevent the pressure sensor 9 from being pressured before the welding head 11 contacts the welding point, thus affecting the operation of the electric push rod 7.

[0041] Furthermore:

[0042] In an optional embodiment, the welding head 11 is electrically connected to the controller 2 via a spring cable 4, the welding head 11 and the laser lamp 13 are on the same vertical line, and the pressure sensor 9 is electrically connected to the controller 2.

[0043] In this embodiment, the laser beam emitted by the laser lamp 13 illuminates the lithium battery, and the illuminating point of the laser lamp 13 is the welding position, so as to adjust the position of the lithium battery according to the illuminating point.

[0044] Working Principle: When using this lithium battery tab welding equipment, first place the lithium battery to be welded and the tab on the frame 1 below the laser lamp 13. The beam emitted by the laser lamp 13 illuminates the lithium battery, and the illuminating point of the laser lamp 13 is the welding position. Adjust the position of the lithium battery so that the laser lamp 13 illuminates the welding area. Then, the controller 2 (model: MM-300A) controls the electric push rod 7 to be powered on and push the welding head 11 downward. When the welding head 11 presses against the area to be welded on the lithium battery, the pressure sensor 9 monitors the pressure of the welding head 11 on the welding area in real time. When the pressure of the welding head 11 on the welding area reaches the preset value, the data is fed back to the controller 2. The controller 2 controls the electric push rod 7 to stop working, and simultaneously controls... The welding head 11, model FT-01, is powered on to weld lithium batteries and tabs. During operation, as the electric push rod 7 pushes the connecting block 5 downwards, the transmission ramp 8 and transmission wheel 17 work together to push the transmission plate 16 and rotating plate 12 to rotate around the bearing seat 14. This causes the laser lamp 13 to move away from below the welding head 11. After welding is completed, the controller 2 again controls the electric push rod 7 to move the welding head 11 upwards back to its original position. When the transmission wheel 17 returns to the transmission ramp 8, the first reset spring 15 uses its own elasticity to push the rotating plate 12 to rotate again, bringing the laser lamp 13 back below the welding head 11 for the next welding operation. This is the working principle of the lithium battery tab welding equipment.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery tab welding device, characterized in that, include: A frame (1) is provided, an electric push rod (7) is installed on the top of the frame (1), a connecting block (5) is installed at the output end of the electric push rod (7), a transmission inclined surface (8) is provided on the lower surface of the connecting block (5), a bearing seat (14) is installed on the right side of the connecting block (5), a rotating plate (12) is movably installed below the bearing seat (14), a laser lamp (13) is installed below the rotating plate (12), a first reset spring (15) is installed on the right side of the rotating plate (12), a transmission plate (16) is fixedly installed on the left side of the rotating plate (12), a transmission wheel (17) is movably installed on the left side of the transmission plate (16), and a controller (2) is installed on the left side of the frame (1).

2. The lithium battery tab welding equipment according to claim 1, characterized in that, The rotating plate (12) is movably connected to the frame (1) through the bearing seat (14), and the rotating plate (12) is elastically connected to the frame (1) through the first return spring (15).

3. The lithium battery tab welding equipment according to claim 1, characterized in that, The diameter of the output shaft of the electric push rod (7) is the same as the length and width of the upper surface of the connecting block (5), and the transmission wheel (17) is in contact with the transmission inclined surface (8).

4. The lithium battery tab welding equipment according to claim 1, characterized in that, The controller (2) is electrically connected to the electric push rod (7).

5. The lithium battery tab welding equipment according to claim 1, characterized in that, The connecting block (5) is also provided with: A fixed plate (6) is installed below the connecting block (5). A pressure sensor (9) and four second reset springs (18) are installed below the fixed plate (6). A movable plate (10) is installed below the pressure sensor (9). A lifting plate (3) is installed below the movable plate (10). A spring cable (4) is threaded through the inside of the lifting plate (3). A welding head (11) is installed below the lifting plate (3). A connecting rod (19) is threaded through the inside of the movable plate (10).

6. The lithium battery tab welding equipment according to claim 5, characterized in that, The connecting rod (19) moves inside the movable plate (10), the movable plate (10) is elastically connected to the fixed plate (6) through the second return spring (18), and the connecting rod (19) is fixedly connected to the fixed plate (6).

7. The lithium battery tab welding equipment according to claim 5, characterized in that, The welding head (11) is electrically connected to the controller (2) via the spring cable (4). The welding head (11) and the laser lamp (13) are on the same vertical line. The pressure sensor (9) is electrically connected to the controller (2).

Images