Lithium ion power battery liquid injection tool

Abstract

The utility model relates to the field of battery liquid injection tools, and discloses a lithium ion power battery liquid injection tool which comprises a box body, a suction cup is arranged in the box body, an adjusting assembly is arranged in the box body, a fixing plate is arranged in the box body, a clamping assembly is arranged on the outer wall of the fixing plate, and the adjusting assembly comprises a sliding block. The outer wall of the sliding block is arranged on the inner wall of the box body, the inner wall of the box body is fixedly connected with a first sliding rail, a fixing groove is formed in the first sliding rail, the inner wall of the sliding block is slidably connected to the outer wall of the first sliding rail, and the inner wall of the sliding block is slidably connected with a pull rod. According to the utility model, the pull rod moves out of the interior of the fixing groove, and then the connecting frame is driven by the sliding block to move, so that the situation that when the model, size or shape of a battery is changed, the sucker cannot be compatible, and a tool needs to be frequently replaced is avoided, the tool replacement frequency is reduced, and the adaptability of a production line to various types of batteries is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of battery liquid injection tooling, and in particular to a lithium-ion power battery liquid injection tooling. Background Technology

[0002] As a core component in new energy vehicles and energy storage systems, the precision and efficiency of lithium-ion power batteries' manufacturing process directly affect their performance and safety. The electrolyte injection process is a crucial step in lithium-ion power battery production; the accurate injection of electrolyte is essential for the battery's charge-discharge performance and cycle life.

[0003] Currently, most lithium-ion power battery electrolyte filling fixtures use suction cup structures that are rigidly connected to the robotic arm or positioning frame of the filling fixture via bolts or welding. Their position and spacing cannot be changed after the fixture is manufactured. Technically, fixed suction cups primarily rely on vacuum or electromagnetic adsorption to grip and secure the opening of the battery packaging. When producing a single battery model, fixed suction cups, with their stable structure and reliable adsorption force, can achieve precise battery positioning and efficient electrolyte filling.

[0004] However, this fixed suction cup structure has significant drawbacks when dealing with the production of multiple battery models. Due to the substantial size differences between different lithium-ion power battery models, the fixed-spacing suction cups cannot accommodate various battery specifications. When switching between different battery models, continuing to use the existing fixed suction cups can lead to either unstable adhesion and battery detachment due to the mismatch between the suction cup spacing and battery size, or inaccurate positioning of the battery's electrolyte injection port, resulting in failed docking of the injection mechanism with the battery, causing electrolyte leakage and inaccurate injection volume. The traditional solution is to replace the entire injection fixture or reinstall and debug the suction cups. This is not only time-consuming and labor-intensive, increasing equipment maintenance costs, but also causing prolonged production line downtime, severely impacting production efficiency and failing to meet market demands for rapid switching between multiple battery models. Therefore, a lithium-ion power battery injection fixture is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a lithium-ion power battery liquid injection tool, which aims to improve the problem that the suction cup spacing cannot be easily adjusted in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A lithium-ion power battery liquid injection fixture includes a housing, a suction cup inside the housing, an adjustment component inside the housing, a fixing plate inside the housing, and a clamping component on the outer wall of the fixing plate.

[0008] The adjustment assembly includes a sliding block, the outer wall of which is disposed on the inner wall of the housing. A slide rail is fixedly connected to the inner wall of the housing. A fixing groove is provided inside the slide rail. The inner wall of the sliding block is slidably connected to the outer wall of the slide rail. A pull rod is slidably connected to the inner wall of the sliding block. The outer wall of the pull rod is slidably connected to the inner wall of the fixing groove. A fixing ring is fixedly connected to the outer wall of the pull rod. A spring is sleeved on the outer wall of the pull rod. One end of the spring is fixedly connected to the outer wall of the fixing ring. The other end of the spring is fixedly connected to the inner wall of the sliding block. A connecting frame is fixedly connected to the outer wall of the sliding block. The outer wall of the suction cup is fixedly connected to the bottom of the connecting frame.

[0009] As a further description of the above technical solution:

[0010] The clamping assembly includes a movable block, the outer wall of which is disposed on the outer wall of the fixed plate, and a bracket is fixedly connected to the inner wall of the box.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the bracket is fixedly connected to a second fixing block, the top of the second slide rail is fixedly connected to the bottom of the second fixing block, the outer wall of the second slide rail is slidably connected to a moving block, and the inner wall of the moving block is slidably connected to the outer wall of the second fixing block.

[0013] As a further description of the above technical solution:

[0014] A fixing block is fixedly connected to the outer wall of the bracket, a connecting plate is fixedly connected to the outer wall of the fixing block, an electric push rod is fixedly connected to the bottom of the fixing block, and an L-shaped push block is fixedly connected to the output end of the electric push rod.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the L-shaped push block is fixedly connected to a first fixing rod, the outer wall of the first fixing rod is rotatably connected to a connecting arm, and the inner wall of the connecting arm is rotatably connected to a second fixing rod.

[0017] As a further description of the above technical solution:

[0018] A connecting block is fixedly connected to the top of the second fixing rod, the top of the connecting block is fixedly connected to the bottom of the moving block, and a connecting plate is fixedly connected to the top of the connecting block;

[0019] As a further description of the above technical solution:

[0020] A connecting column is fixedly connected to the outer wall of the connecting plate 2, and one end of the connecting column is fixedly connected to the outer wall of the fixed plate;

[0021] As a further description of the above technical solution:

[0022] A sliding column is fixedly connected to the outer wall of the fixed plate, and the outer wall of the sliding column is slidably connected to an inner wall of the connecting plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the suction cups are moved out of the fixed groove by a pull rod, and then the connecting frame is moved by a sliding block, which achieves the effect of adjusting the suction cup spacing. This avoids the incompatibility of the suction cups when the battery model, size or shape changes, which would require frequent tooling changes. When the suction cup cannot accurately position the battery injection port, it will also cause the injection mechanism to fail to dock with the battery, requiring manual intervention and adjustment, which will affect the efficiency of the automated process. Therefore, it can be adapted to multiple battery models, reduce the frequency of tooling changes, and significantly improve the adaptability of the production line to multiple types of batteries.

[0025] 2. In this utility model, the moving block slides on the outer wall of the slide rail, and then the moving block drives the connecting block to move, thereby achieving the effect of clamping and fixing the battery. This avoids the problem of the electrolyte not being accurately injected into the injection hole due to inaccurate battery positioning. At the same time, it avoids the need to frequently change tooling or make complex adjustments due to different battery models, reducing equipment investment costs and production preparation time. This allows for the quick and accurate fixing of batteries of different sizes, enabling the injection mechanism to quickly align with the injection port for injection without spending a lot of time adjusting the battery position or changing tooling, thus improving injection efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a lithium-ion power battery liquid injection fixture proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the sliding block of a lithium-ion power battery liquid injection tool proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the structure of a movable block of a lithium-ion power battery liquid injection tool proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the connecting arm of a lithium-ion power battery liquid injection fixture proposed in this utility model.

[0031] Legend:

[0032] 1. Box body; 2. Suction cup; 3. Fixing plate; 4. Slide rail one; 5. Fixing groove; 6. Sliding block; 7. Pull rod; 8. Fixing ring; 9. Spring; 10. Connecting frame; 11. Bracket; 12. Fixing block one; 13. Fixing block two; 14. Electric push rod; 15. L-shaped push block; 16. Fixing rod one; 17. Connecting arm; 18. Fixing rod two; 19. Connecting block; 20. Moving block; 21. Connecting plate one; 22. Connecting plate two; 23. Connecting column; 24. Sliding column; 25. Slide rail two. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1-3This utility model provides an embodiment of a lithium-ion power battery liquid injection fixture, including a housing 1. The housing 1 provides installation and operating space for internal suction cups 2, adjustment components, clamping components, etc., achieving the effect of stable support and protection for internal precision components. Its shape is rectangular to facilitate integration into automated production lines. The housing 1 contains suction cups 2, which are key actuators for gripping the battery pack opening. They are used to adsorb the surface of the battery pack opening and open it during the liquid injection process, achieving accurate liquid injection. The housing 1 contains... The unit is equipped with an adjustment component. Inside the housing 1 is a fixing plate 3, which securely clamps the battery to prevent displacement during electrolyte injection. The outer wall of the fixing plate 3 is equipped with a clamping component. The adjustment component includes a sliding block 6, which slides along the slide rail 4 within the housing 1 to flexibly adjust the horizontal position of the suction cups 2, avoiding cumbersome adjustments to the suction cup spacing. The outer wall of the sliding block 6 is located on the inner wall of the housing 1, and the slide rail 4 is fixedly connected to the inner wall of the housing 1. The slide rail 4 has a fixing groove 5 inside. The sliding block 6 is slidably connected to the outer wall of the slide rail 4. The sliding block 6 and the slide rail 4 cooperate to perform linear sliding motion, allowing the sliding block 6 to move freely on the slide rail 4, facilitating quick adjustment of the suction cup 2 position. A pull rod 7 is slidably connected to the inner wall of the sliding block 6, and the outer wall of the pull rod 7 is slidably connected to the inner wall of the fixing groove 5. The fixing groove 5 is used to lock the sliding block 6 in position after it has been adjusted to the appropriate position, preventing it from shaking. A fixing ring 8 is fixedly connected to the outer wall of the pull rod 7, and a spring 9 is sleeved on the outer wall of the pull rod 7. One end of the spring 9 is fixed... The spring 9 is fixedly connected to the outer wall of the fixed ring 8, and the other end of the spring 9 is fixedly connected to the inner wall of the sliding block 6. The outer wall of the sliding block 6 is fixedly connected to the connecting frame 10, and the outer wall of the suction cup 2 is fixedly connected to the bottom of the connecting frame 10. When it is necessary to adjust the distance between the suction cups 2, the operator pulls the lever 7 outward to move the lever 7 out of the fixed groove 5. At this time, the spring 9 is compressed. Then, the connecting frame 10 is moved by the sliding block 6 to adjust the suction cup 2 to a suitable distance. After the adjustment is completed, the lever 7 is released. Under the elastic force of the spring 9, the lever 7 is reinserted into the fixed groove 5 to fix the sliding block 6.

[0035] Reference Figure 1 , Figure 4 and Figure 5The clamping assembly includes a second slide rail 25, the outer wall of which is set on the outer wall of the fixed plate 3. A bracket 11 is fixedly connected to the inner wall of the housing 1, and a second fixed block 13 is fixedly connected to the outer wall of the bracket 11. The top of the second slide rail 25 is fixedly connected to the bottom of the second fixed block 13. A movable block 20 is slidably connected to the outer wall of the second slide rail 25. The second slide rail 25 and the movable block 20 cooperate to perform linear sliding motion, achieving the effect of allowing the movable block 20 to move on the second slide rail 25, ensuring the stability and accuracy of the movement of the movable block 20. The inner wall of the movable block 20 is slidably connected to the outer wall of the second fixed block 13. A fixing block 12 is fixedly connected to the outer wall of the bracket 11. The fixing blocks 12 and 13 stabilize the overall structure of the clamping assembly, preventing shaking when clamping and fixing the battery, thus increasing the stability of the equipment. A connecting plate 21 is fixedly connected to the outer wall of the fixing block 12. An electric push rod 14 is fixedly connected to the bottom of the fixing block 12. An L-shaped push block 15 is fixedly connected to the output end of the electric push rod 14. The L-shaped push block 15 is used to convert the linear extension and retraction motion of the electric push rod 14 into the horizontal pushing motion of the L-shaped push block 15, thereby driving the connecting arm 17 to move. The L-shaped push block 15 is fixedly connected to a first fixing rod 16 on its outer wall. A connecting arm 17 is rotatably connected to the outer wall of the first fixing rod 16. A second fixing rod 18 is rotatably connected to the inner wall of the connecting arm 17. A connecting block 19 is fixedly connected to the top of the second fixing rod 18. The top of the connecting block 19 is fixedly connected to the bottom of the moving block 20. When the electric push rod 14 extends, it pushes the L-shaped push block 15 to move. The L-shaped push block 15 drives the first fixing rod 16 to move, thereby causing the connecting arm 17 to rotate around the first fixing rod 16. The connecting arm 17 pushes the connecting block 19 and the moving block 20 on the second slide rail 25 via the second fixing rod 18. The upward sliding action clamps the battery, while the downward sliding action releases it. A connecting plate 22 is fixedly connected to the top of the connecting block 19, and a connecting post 23 is fixedly connected to the outer wall of the connecting plate 22. One end of the connecting post 23 is fixedly connected to the outer wall of the fixed plate 3. A sliding post 24 is fixedly connected to the outer wall of the fixed plate 3, and the outer wall of the sliding post 24 is slidably connected to the inner wall of the connecting plate 21. The sliding post 24 cooperates with the fixed plate 3 to perform linear sliding motion, which further guides and stabilizes the movement of the fixed plate 3, ensuring the smoothness and reliability of the clamping assembly.

[0036] Working principle: When adjusting the spacing of suction cup 2, first pull down the lever 7. Pulling the lever 7 moves the fixing ring 8, which in turn compresses the spring 9. When the lever 7 moves out of the fixing groove 5, the sliding block 6 moves left and right. Then, the sliding block 6 moves the connecting frame 10, which in turn moves the suction cup 2. When the desired position is reached, the lever 7 is released, and the spring 9 returns the lever 7 to its original position. When the lever 7 moves back into the fixing groove 5, the spacing of suction cup 2 is adjusted. This avoids the incompatibility of suction cup 2 due to changes in battery model, size, or shape, which would require frequent tooling changes. If the suction cup 2 cannot accurately position the battery injection port, the injection mechanism will fail to dock with the battery, requiring manual intervention and affecting the efficiency of the automated process.

[0037] When clamping and fixing batteries of different specifications, the electric push rod 14 is first activated, which drives the L-shaped push block 15 to move longitudinally. The movement of the L-shaped push block 15 then drives the first fixing rod 16 to move, followed by the movement of the first fixing rod 16, which in turn drives the connecting arm 17 to move. Next, the movement of the connecting arm 17 drives the second fixing rod 18 to move laterally. Then, the movement of the second fixing rod 18 drives the connecting block 19 to move, which in turn drives the moving block 20 to slide on the outer wall of the second slide rail 25. Next, the movement of connecting block 19 drives connecting plate 22 to move laterally. Then, the movement of connecting plate 22 drives connecting column 23 to move. The movement of connecting column 23 drives fixing plate 3 to clamp and fix the battery. Subsequently, the movement of connecting column 23 drives sliding column 24 to slide on the inner wall of connecting plate 21. This avoids the electrolyte not being accurately injected into the injection hole due to inaccurate battery positioning. It also avoids the need for frequent tooling changes or complex adjustments due to different battery models, reducing equipment investment costs and production preparation time.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium-ion power battery electrolyte filling fixture, comprising a housing (1), characterized in that: The box (1) is equipped with a suction cup (2), the box (1) is equipped with an adjustment component, the box (1) is equipped with a fixing plate (3), and the outer wall of the fixing plate (3) is equipped with a clamping component. The adjustment assembly includes a sliding block (6), the outer wall of which is disposed on the inner wall of the housing (1). A slide rail (4) is fixedly connected to the inner wall of the housing (1). A fixing groove (5) is provided inside the slide rail (4). The inner wall of the sliding block (6) is slidably connected to the outer wall of the slide rail (4). A pull rod (7) is slidably connected to the inner wall of the sliding block (6). The outer wall of the pull rod (7) is slidably connected to the inner wall of the fixing groove (5). A fixing ring (8) is fixedly connected to the outer wall of the pull rod (7). A spring (9) is sleeved on the outer wall of the pull rod (7). One end of the spring (9) is fixedly connected to the outer wall of the fixing ring (8). The other end of the spring (9) is fixedly connected to the inner wall of the sliding block (6). A connecting frame (10) is fixedly connected to the outer wall of the sliding block (6). The outer wall of the suction cup (2) is fixedly connected to the bottom of the connecting frame (10).

2. The lithium-ion power battery electrolyte filling fixture according to claim 1, characterized in that: The clamping assembly includes a slide rail 2 (25), the outer wall of which is disposed on the outer wall of the fixing plate (3), and a bracket (11) is fixedly connected to the inner wall of the box (1).

3. The lithium-ion power battery electrolyte filling fixture according to claim 2, characterized in that: The bracket (11) has a fixed block two (13) fixedly connected to its outer wall. The top of the slide rail two (25) is fixedly connected to the bottom of the fixed block two (13). The slide rail two (25) has a sliding block (20) slidably connected to its outer wall. The inner wall of the sliding block (20) is slidably connected to the outer wall of the fixed block two (13).

4. The lithium-ion power battery electrolyte filling fixture according to claim 3, characterized in that: The bracket (11) is fixedly connected to a fixing block (12) on its outer wall. The fixing block (12) is fixedly connected to a connecting plate (21) on its outer wall. An electric push rod (14) is fixedly connected to the bottom of the fixing block (12). An L-shaped push block (15) is fixedly connected to the output end of the electric push rod (14).

5. The lithium-ion power battery electrolyte filling fixture according to claim 4, characterized in that: The outer wall of the L-shaped push block (15) is fixedly connected to a first fixing rod (16), the outer wall of the first fixing rod (16) is rotatably connected to a connecting arm (17), and the inner wall of the connecting arm (17) is rotatably connected to a second fixing rod (18).

6. The lithium-ion power battery electrolyte filling fixture according to claim 5, characterized in that: The top of the fixing rod (18) is fixedly connected to the connecting block (19), the top of the connecting block (19) is fixedly connected to the bottom of the moving block (20), and the top of the connecting block (19) is fixedly connected to the connecting plate (22).

7. The lithium-ion power battery electrolyte filling fixture according to claim 6, characterized in that: A connecting column (23) is fixedly connected to the outer wall of the connecting plate 2 (22), and one end of the connecting column (23) is fixedly connected to the outer wall of the fixing plate (3).

8. The lithium-ion power battery electrolyte filling fixture according to claim 7, characterized in that: The outer wall of the fixed plate (3) is fixedly connected to a sliding column (24), and the outer wall of the sliding column (24) is slidably connected to the inner wall of the connecting plate (21).

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