Lithium ion battery tab welding positioning clamp

Abstract

The utility model discloses a lithium ion battery tab welding positioning fixture, which comprises a supporting leg, a bottom plate is arranged at the top end of the supporting leg, a fixed plate is arranged on one side of the top end of the bottom plate, a positioning structure is arranged at the top end of a moving block, the positioning structure comprises a rotating shaft, a plate body, a baffle plate and a torsion spring, and the plate body is arranged at the top end of the moving block. The plate body is mounted at the top end of the moving block, the rotating shaft on the inner side of the plate body can rotate, the rotating shaft can drive the baffle to rotate, the tab can be placed in the mounting groove, and the rotating shaft can rotate to drive the baffle to press the top end of the tab due to the elasticity of the torsion spring. According to the lithium ion battery tab welding positioning clamp, the baffle is rotated to prevent the tab from tilting during welding, and after welding is finished, the baffle is rotated to enable the baffle not to cover the top end of the tab any more, so that the tab can be disassembled, and the purpose that the lithium ion battery tab welding positioning clamp can conveniently limit the tab is achieved.

Description

Technical Field

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

[0002] A battery is a cup, tank, or other container or composite container that contains an electrolyte solution and metal electrodes to generate an electric current. It is a device that converts chemical energy into electrical energy and has positive and negative electrodes. With the advancement of technology, the term "battery" now generally refers to a small device that can generate electrical energy. A lithium-ion battery is a rechargeable battery that mainly works by moving lithium ions between the positive and negative electrodes. A tab is a raw material for lithium-ion polymer battery products, such as mobile phone batteries, Bluetooth batteries, and laptop batteries that we use in our daily lives.

[0003] To address this, patent publication CN207149642U discloses a lithium-ion battery tab welding and positioning fixture for lithium-ion battery manufacturing. The fixture carrier has positive electrode tab grooves, negative electrode tab grooves, and cell grooves distributed on it; the cell groove is located on one side of the fixture carrier, while the positive and negative electrode tab grooves are located on the other side. The positive and negative electrode tab grooves consist of tab adhesive grooves and tab metal portion grooves. This invention positions the lithium-ion battery cell and the positive and negative electrode tabs respectively at corresponding positions on the fixture carrier for positioning and welding. The dimensions of each groove on the fixture can be adjusted according to different process design standards. The structure is simple, easy to operate, effectively reduces labor intensity, significantly improves production efficiency and the welding accuracy of lithium-ion battery cell tabs, ensures tab position consistency, and improves the welding performance of lithium-ion batteries.

[0004] 1. The aforementioned lithium-ion battery tab welding positioning fixture has a simple structure and is easy to operate. It can effectively reduce labor intensity, significantly improve production efficiency and the welding accuracy of lithium-ion battery cell tabs, ensure the consistency of tab position, and enhance the welding purpose of lithium-ion batteries. However, when welding the tabs, the tabs may shift, resulting in unstable placement and affecting the welding quality.

[0005] 2. The position of the tabs needs to be adjusted because different types of lithium batteries will be welded together. If the position of the tabs cannot be adjusted, it will be difficult to adapt to different types of lithium batteries. Utility Model Content

[0006] The purpose of this utility model is to provide a lithium-ion battery tab welding and positioning fixture to solve the defects of existing lithium-ion battery tab welding and positioning fixtures that are difficult to limit the tabs and difficult to adjust the tab position.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a lithium-ion battery tab welding and positioning fixture, including support legs;

[0008] A base plate is installed at the top of the support leg, a fixing plate is installed on one side of the top of the base plate, a lifting structure is installed inside the fixing plate, a first limiting plate is installed at the bottom of one side of the fixing plate, an mounting plate is installed at the top of one side of the fixing plate, and a threaded rod passes through one side of the mounting plate.

[0009] A second limiting plate is installed at the bottom end of the threaded rod, a positioning rod is installed on one side of the top end of the second limiting plate, a moving block is installed at the top end of the base plate, an installation groove is provided at the top end of the moving block, and a moving structure is installed at the bottom end of the moving block.

[0010] The top of the movable block is equipped with a positioning structure, which includes a rotating shaft, a plate, a baffle, and a torsion spring. The plate is installed on the top of the movable block.

[0011] In use, the lithium battery can first be clamped between the first limiting plate and the second limiting plate. The threaded rod and the mounting plate form a threaded connection. Tightening the threaded rod can drive the threaded rod to rise and fall. The rise and fall of the threaded rod can drive the second limiting plate to rise and fall. The positioning rod can prevent the second limiting plate from shifting. The second limiting plate can cooperate with the first limiting plate to clamp the lithium battery in the middle and limit its position.

[0012] Furthermore, the movable structure includes a movable groove, a fixing screw, and a connecting plate. The movable groove is located inside the base plate, and the connecting plate is installed on one side of the movable block. A fixing screw passes through the middle of the connecting plate, and the movable block can slide to adjust the position of the installed tab.

[0013] Furthermore, the fixing screws and the connecting plate form a threaded connection, and the fixing screws are symmetrically distributed about the central axis of the moving block, so that the fixing screws can fix the moving block.

[0014] Furthermore, a rotating shaft is installed on the inner side of the plate, and a baffle is installed on one side of the rotating shaft. A torsion spring is installed on the outer side of the rotating shaft, which can limit the position of the electrode tab through the baffle.

[0015] Furthermore, the torsion spring is helical in shape, and the torsion spring and the rotating shaft form an elastic connection, thus the torsion spring is elastic.

[0016] Furthermore, the lifting structure includes a screw block, a stop ring, a screw, a guide rod, and a movable plate. The movable plate is installed on one side of the first limiting plate. A screw passes through the middle of the movable plate. A screw block is installed at the top of the screw. A stop ring is installed at the top of the screw. Guide rods pass through both ends of the movable plate. The height of the first limiting plate can be adjusted by adjusting the height of the lifting plate.

[0017] Furthermore, the outer sidewall of the screw is uniformly provided with external threads, and the inner sidewall of the moving plate is uniformly provided with internal threads that cooperate with the external threads. The screw and the moving plate are threadedly connected, and the rotation of the screw can drive the moving plate to rise and fall.

[0018] The lithium-ion battery tab welding positioning fixture provided by this utility model has the following advantages: the tab can be limited by the mounting groove, and then the tab can be limited by the baffle to prevent the tab from shifting during welding. At the same time, the position of the moving block can be adjusted by adjusting the position of the top tab, so that the tab can adapt to different situations.

[0019] By installing a plate on the top of the moving block, the rotating shaft inside the plate can rotate, which in turn drives the baffle to rotate. The tab can be placed inside the mounting slot. Then, due to the elasticity of the torsion spring, the rotating shaft will rotate and drive the baffle to press against the top of the tab, preventing the tab from lifting up during welding. After welding, the baffle is rotated so that it no longer covers the top of the tab, and the tab can be removed. This achieves the purpose of the lithium-ion battery tab welding positioning fixture to facilitate the limiting of the tab.

[0020] By providing a sliding groove at the bottom of the movable block, the pulley at the bottom of the movable block can slide along the sliding groove. The sliding of the movable block can adjust the position of the top tab, allowing the tab to be adjusted to a suitable position. The tab and the movable block need to be fixed. The fixing screw and the connecting plate form a threaded connection. Tightening the fixing screw can fix the movable block, thereby achieving the purpose of the lithium-ion battery tab welding positioning fixture to facilitate the fixing of the tab. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a frontal cross-sectional view of the present invention.

[0023] Figure 3 For the present utility model Figure 2 Enlarged cross-sectional view of a portion of point A in the middle section;

[0024] Figure 4This is a partial three-dimensional structural diagram of the positioning structure of this utility model;

[0025] Figure 5 This is a partial sectional view of the lifting structure of this utility model from the side.

[0026] The reference numerals in the diagram are as follows: 1. Base plate; 2. Support leg; 3. Moving structure; 301. Moving groove; 302. Fixing screw; 303. Connecting plate; 4. Moving block; 5. Positioning structure; 501. Rotating shaft; 502. Plate body; 503. Baffle; 504. Torsion spring; 6. Mounting groove; 7. First limiting plate; 8. Lifting structure; 801. Tightening block; 802. Stop ring; 803. Screw; 804. Guide rod; 805. Moving plate; 9. Fixing plate; 10. Mounting plate; 11. Positioning rod; 12. Threaded rod; 13. Second limiting plate. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-5 One embodiment of this utility model is a lithium-ion battery tab welding and positioning fixture, which includes a support leg 2.

[0029] A base plate 1 is installed at the top of the support leg 2. A fixing plate 9 is installed on one side of the top of the base plate 1. A lifting structure 8 is installed inside the fixing plate 9. The lifting structure 8 includes a screw block 801, a stop ring 802, a screw 803, a guide rod 804, and a moving plate 805. The moving plate 805 is installed on one side of the first limiting plate 7. The screw 803 passes through the middle of the moving plate 805. External threads are evenly provided on the outer side wall of the screw 803. Internal threads that cooperate with the external threads are evenly provided on the inner side wall of the moving plate 805. The screw 803 and the moving plate 805 are connected by threads.

[0030] A screw block 801 is installed at the top of the screw 803, a stop ring 802 is installed at the top of the screw 803, and guide rods 804 pass through both ends of the moving plate 805.

[0031] See attached document Figure 1-2 and attached Figure 5As shown, a lithium battery can be clamped between a first limiting plate 7 and a second limiting plate 13. A threaded rod 12 and a mounting plate 10 form a threaded connection. Tightening the threaded rod 12 can cause it to rise and fall, which in turn causes the second limiting plate 13 to rise and fall. A positioning rod 11 can prevent the second limiting plate 13 from shifting. The second limiting plate 13 can cooperate with the first limiting plate 7 to clamp the lithium battery in the middle and limit its position. At the same time, turning the screw block 801 can cause the screw 803 to rotate. The screw 803 causes the moving plate 805, which forms a threaded connection with it, to rise and fall. The rising and falling of the moving plate 805 can cause the first limiting plate 7 to rise and fall. The rising and falling of the first limiting plate 7 can adjust the height of the lithium battery, allowing it to adapt to different situations. A guide rod 804 can prevent the moving plate 805 from shifting, and a stop ring 802 can prevent the screw 803 from rotating on its own.

[0032] A first limiting plate 7 is installed at the bottom of one side of the fixing plate 9, and an mounting plate 10 is installed at the top of one side of the fixing plate 9. A threaded rod 12 passes through one side of the mounting plate 10.

[0033] A second limiting plate 13 is installed at the bottom end of the threaded rod 12. A positioning rod 11 is installed on one side of the top end of the second limiting plate 13. A movable block 4 is installed at the top end of the base plate 1. An installation groove 6 is provided at the top end of the movable block 4. A movable structure 3 is installed at the bottom end of the movable block 4. The movable structure 3 includes a movable groove 301, a fixing screw 302, and a connecting plate 303. The movable groove 301 is located inside the base plate 1. The connecting plate 303 is installed on one side of the movable block 4. A fixing screw 302 passes through the middle position of the connecting plate 303. The fixing screw 302 and the connecting plate 303 form a threaded connection. The fixing screw 302 is symmetrically distributed about the central axis of the movable block 4.

[0034] See attached document Figure 1-3 As shown, the pulley at the bottom of the movable block 4 can slide along the movable groove 301. The sliding of the movable block 4 can adjust the position of the top electrode tab, so that the electrode tab can be adjusted to a suitable position. The electrode tab and the movable block 4 need to be fixed. The fixing screw 302 and the connecting plate 303 form a threaded connection. Tightening the fixing screw 302 can fix the movable block 4.

[0035] The top of the movable block 4 is equipped with a positioning structure 5, which includes a rotating shaft 501, a plate 502, a baffle 503, and a torsion spring 504. The plate 502 is installed on the top of the movable block 4. The rotating shaft 501 is installed on the inner side of the plate 502, and the baffle 503 is installed on one side of the rotating shaft 501. The torsion spring 504 is installed on the outer side of the rotating shaft 501. The torsion spring 504 is spiral in shape, and the torsion spring 504 and the rotating shaft 501 form an elastic connection.

[0036] See attached document Figure 1-2 and attached Figure 4 As shown, the rotating shaft 501 inside the plate 502 can rotate. The rotation of the rotating shaft 501 can drive the baffle 503 to rotate, so that the electrode tab can be placed inside the mounting groove 6. Then, due to the elasticity of the torsion spring 504, the rotating shaft 501 will rotate and drive the baffle 503 to press on the top of the electrode tab, preventing the electrode tab from lifting up during welding. After welding, the baffle 503 is rotated so that the baffle 503 no longer covers the top of the electrode tab, and the electrode tab can be disassembled.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lithium ion battery tab welding positioning clamp, comprising a support leg (2); Characterized in that: The top end of the support leg (2) is provided with a bottom plate (1), one side of the top end of the bottom plate (1) is provided with a fixed plate (9), the inside of the fixed plate (9) is provided with a lifting structure (8), the bottom end of one side of the fixed plate (9) is provided with a first limiting plate (7), the top end of one side of the fixed plate (9) is provided with a mounting plate (10), and one side of the mounting plate (10) penetrates a threaded rod (12); The bottom end of the threaded rod (12) is provided with a second limiting plate (13), one side of the top end of the second limiting plate (13) is provided with a positioning rod (11), the top end of the bottom plate (1) is provided with a moving block (4), the top end of the moving block (4) is provided with a mounting groove (6), and the bottom end of the moving block (4) is provided with a moving structure (3); The top end of the moving block (4) is provided with a positioning structure (5), and the positioning structure (5) comprises a rotating shaft (501), a plate body (502), a baffle (503) and a torsion spring (504), and the plate body (502) is arranged at the top end of the moving block (4).

2. The lithium-ion battery tab welding positioning fixture of claim 1, wherein: The moving structure (3) comprises a moving groove (301), a fixed screw (302) and a connecting plate (303), the moving groove (301) is arranged in the inside of the bottom plate (1), the connecting plate (303) is arranged at one side of the moving block (4), and the fixed screw (302) penetrates the middle position of the connecting plate (303).

3. The lithium-ion battery tab welding positioning fixture of claim 2, wherein: The fixed screw (302) and the connecting plate (303) are in threaded connection, and the fixed screw (302) is symmetrically distributed about the central axis of the moving block (4).

4. The lithium-ion battery tab welding positioning fixture of claim 1, wherein: The inside of the plate body (502) is provided with the rotating shaft (501), one side of the rotating shaft (501) is provided with the baffle (503), and the outside of the rotating shaft (501) is provided with the torsion spring (504).

5. The lithium-ion battery tab welding positioning fixture of claim 4, wherein: The torsion spring (504) is in the shape of a spiral, and the torsion spring (504) and the rotating shaft (501) are in elastic connection.

6. The lithium-ion battery tab welding fixture of claim 1, wherein: The lifting structure (8) comprises a twisting block (801), a stop ring (802), a screw rod (803), a guide rod (804) and a moving plate (805), the moving plate (805) is arranged at one side of the first limiting plate (7), the screw rod (803) penetrates the middle position of the moving plate (805), the top end of the screw rod (803) is provided with the twisting block (801), the top end of the screw rod (803) is provided with the stop ring (802), and the two ends of the moving plate (805) penetrate the guide rod (804).

7. The lithium-ion battery tab welding positioning fixture of claim 6, wherein: The outer side wall of the screw rod (803) is uniformly provided with external threads, the inner side wall of the moving plate (805) is uniformly provided with internal threads matched with the external threads, and the screw rod (803) and the moving plate (805) are in threaded connection.

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