Liquid injection device of lithium battery

Abstract

The utility model discloses a liquid injection device of a lithium battery, which belongs to the technical field of lithium battery production and comprises two supporting plates, a first driving rod is rotatably connected onto the right supporting plate, one end of the first driving rod is fixedly connected with a first driving motor, and the bottom end of the first driving motor is fixedly connected with a first supporting seat. The first supporting seat is fixedly installed outside the right supporting plate, meanwhile, the other end of the first driving rod is fixedly connected with a first belt wheel, the other end of the first belt wheel is rotationally connected to the left supporting plate, and meanwhile, a transmission belt is arranged on the outer diameter of the first belt wheel. In the actual use process, even if the position of the lithium battery is slightly deviated, the lithium battery can be rapidly adjusted to the correct position through the adjusting assembly, the operation flexibility and efficiency are greatly improved, the lithium battery adjusting device can adapt to lithium batteries of different specifications through the adjusting assembly, and equipment does not need to be replaced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, specifically to a lithium battery liquid injection device. Background Technology

[0002] Electrolyte is one of the four key materials of lithium batteries, known as the "blood" of lithium batteries. As the discharge medium of lithium batteries, electrolyte provides ion conduction for the normal operation of positive and negative electrodes. Therefore, the precise control of the electrolyte injection process is particularly critical in the lithium battery manufacturing process. The accuracy of the electrolyte injection volume control directly affects the discharge performance of the final product, and determines the safety, lifespan and other performance characteristics of the lithium battery. Electrolyte injection is the process of injecting a fixed amount of electrolyte into the lithium-ion battery. Too much electrolyte can easily cause the battery to bulge, resulting in poor battery thickness. Too little electrolyte will reduce the battery capacity and cycle life. Inaccurate positioning of the lithium battery will also lead to low electrolyte injection efficiency.

[0003] A search revealed a Chinese utility model patent with publication number CN219643086U, which discloses a lithium battery electrolyte injection device. This patent describes a system consisting of a storage tank, a stirring tank, and an injection bag connected in sequence. The injection bag has multiple injection nozzles spaced apart at its outlet. During electrolyte injection, the electrolyte material from the storage tank flows into the stirring tank to obtain a uniformly stirred electrolyte. The electrolyte then flows into the injection bag and through the multiple injection nozzles onto the battery electrodes or separator. This utility model (publication number CN219643086U) is used to simultaneously inject electrolyte during the stacking process and solves the problems of poor wetting leading to interface abnormalities and poor battery cycle performance in existing batteries.

[0004] However, the proposed solution (announcement number CN219643086U) has a technical problem of lacking adjustment components. Different models of lithium batteries may have different sizes. If the liquid injection device cannot be adjusted forward, backward, left, or right, then it can only be used for specific specifications of lithium batteries, lacking versatility. Therefore, when it is necessary to produce lithium batteries of different specifications, different liquid injection devices need to be replaced, increasing equipment investment costs. In order to solve this technical problem, this utility model proposes a liquid injection device for lithium batteries. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The proposed solution, CN219643086U, suffers from a technical problem due to the lack of adjustable components. Different models of lithium batteries may vary in size. If the liquid injection device cannot be adjusted forward, backward, left, or right, it can only be used for specific specifications of lithium batteries, lacking versatility. Therefore, when different specifications of lithium batteries need to be produced, different liquid injection devices need to be replaced, increasing equipment investment costs. To solve this technical problem, this utility model proposes a liquid injection device for lithium batteries.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery electrolyte injection device, comprising two support plates, a first drive rod rotatably connected to the right support plate, one end of the first drive rod being fixedly connected to a first drive motor, and the bottom end of the first drive motor being fixedly connected to a first support base, the first support base being fixedly installed on the outside of the right support plate, and the other end of the first drive rod being fixedly connected to a first pulley, the other end of the first pulley being rotatably connected to the left support plate, and a transmission belt being provided on the outer diameter of the first pulley, the other end of the transmission belt being internally provided with a second pulley, the two ends of the second pulley being rotatably connected to opposite sides of the two support plates, and multiple columns being fixedly connected to the top ends of the two support plates, the other ends of the multiple columns being fixedly installed with a square frame, and an adjustment component being provided on the square frame;

[0009] The adjustment assembly includes a limiting plate, a first connecting plate, and a first electric push rod. The two ends of the limiting plate are slidably connected to the inside of the square frame, and the first connecting plate is fixedly connected to the middle of the limiting plate. Meanwhile, the left side of the first connecting plate is fixedly connected to the output end of the first electric push rod, and the other end of the first electric push rod is fixedly connected to the square frame. A fixing plate is fixedly connected to the outside of the first connecting plate, and two vertical plates are fixedly installed on the right side wall of the fixing plate.

[0010] Preferably, a second drive rod is rotatably connected to the middle of the rear vertical plate, and a second drive motor is fixedly connected to the other end of the second drive rod. A second support seat is fixedly connected to the bottom end of the second drive motor, and the second support seat is fixedly installed on the rear vertical plate.

[0011] Preferably, the other end of the second drive rod is fixedly connected to a screw, and the other end of the screw is threadedly connected to a limit ring, while the other side of the limit ring is fixedly installed on the front vertical plate.

[0012] Preferably, a linkage seat is threaded onto the outer diameter of the screw, and two support rods are slidably connected to the outside of the linkage seat. At the same time, the two ends of the two support rods are fixedly installed on opposite sides of the two vertical plates. A second electric push rod is fixedly installed on the outside of the linkage seat. A second connecting plate is fixedly connected to the output end of the second electric push rod, and a storage tank is fixedly installed on the second connecting plate.

[0013] Preferably, an exhaust port is provided on the outer side of the storage tank, and a stirring assembly is provided inside the storage tank;

[0014] The stirring assembly includes a drive rod three and a stirring rod. One end of the drive rod three is fixedly connected to the stirring rod, and the outer diameter of the drive rod three is rotatably connected to the top center of the storage tank. At the same time, the other end of the drive rod three is fixedly connected to a drive motor three, which is fixedly installed at the top of the storage tank. Meanwhile, multiple stirring columns are fixedly connected to the outer diameter of the stirring rod.

[0015] Preferably, a metering valve is provided at the bottom center of the storage tank, and an injection port is fixedly installed at the other end of the metering valve.

[0016] (III) Beneficial Effects

[0017] This invention provides a lithium battery electrolyte filling device. It has the following advantages:

[0018] (1) In this utility model, through the mutual cooperation between the first electric push rod, the fixed plate, the vertical plate, the second support base, the second drive motor, the second drive rod, the screw, the limit ring, the linkage base, the second electric push rod, and the second connecting plate, the operator can more conveniently adjust the position of the lithium battery. Even if the position of the lithium battery is slightly deviated, it can be quickly adjusted to the correct position by adjusting the components, which greatly improves the flexibility and efficiency of operation. Furthermore, the adjusting components can also adapt to lithium batteries of different specifications without replacing the equipment, thus reducing the equipment investment cost.

[0019] (2) In this utility model, through the cooperation between the storage tank, the exhaust port, the drive motor, the drive rod, the stirring rod, the stirring column, the metering valve, and the injection port, the electrolyte can be continuously stirred so that the components are fully mixed and the electrolyte composition at each location is consistent. At the same time, it can also reduce the bubble content in the electrolyte, thereby improving the injection quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the overall structure of this utility model;

[0022] Figure 3This is a schematic diagram of the square frame structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the stirring column structure of this utility model.

[0024] In the diagram: 1. Support plate; 2. First drive rod; 3. First drive motor; 4. First support base; 5. First pulley; 6. Transmission belt; 7. Second pulley; 8. Column; 9. Square frame; 10. Limiting plate; 11. First connecting plate; 12. First electric push rod; 13. Fixing plate; 14. Vertical plate; 15. Second support base; 16. Second drive motor; 17. Second drive rod; 18. Screw; 19. Limiting ring; 20. Linkage seat; 21. Support rod; 22. Second electric push rod; 23. Second connecting plate; 24. Storage tank; 25. Exhaust port; 26. Drive motor three; 27. Drive rod three; 28. Stirring rod; 29. ​​Stirring column; 30. Metering valve; 31. Liquid injection port. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] Example 1: A lithium battery electrolyte injection device includes two support plates 1. A first drive rod 2 is rotatably connected to the right support plate 1, providing support for the first drive rod 2. One end of the first drive rod 2 is fixedly connected to a first drive motor 3, which drives the first drive rod 2. Simultaneously, a first support base 4 is fixedly connected to the bottom end of the first drive motor 3, providing support and fixation for the first drive motor 3. The first support base 4 is fixedly installed on the outside of the right support plate 1, and the two are tightly connected. The other end of the first drive rod 2 is fixedly connected to a first pulley 5, which drives the first pulley 5. The other end of the first pulley 5 is rotatably connected to the left support plate 1, providing support for the first pulley 5. The system provides support and limitation. A transmission belt 6 is mounted on the outer diameter of the first pulley 5, driving the belt 6 as the first pulley 5 rotates. A second pulley 7 is located inside the other end of the transmission belt 6, driving the second pulley 7 as well. The two ends of the second pulley 7 are rotatably connected to opposite sides of the two support plates 1, providing support and limitation. Multiple columns 8 are fixedly connected to the tops of the two support plates 1, without any fastening between them. A square frame 9 is fixedly mounted to the other ends of the columns 8, also without any fastening between them. An adjustment assembly is mounted on the square frame 9, including a limiting plate 10, a first connecting plate 11, and a first electric push rod 12. The two ends of the limiting plate 10 are slidably connected inside the square frame 9. A square frame 9 supports a limiting plate 10, and a first connecting plate 11 is fixedly connected to the middle of the limiting plate 10 without any fastening connection. The left side of the first connecting plate 11 is fixedly connected to the output end of a first electric push rod 12 without any fastening connection, and the first electric push rod 12 drives the first connecting plate 11. The other end of the first electric push rod 12 is fixedly connected to the square frame 9 without any fastening connection. A fixing plate 13 is fixedly connected to the outside of the first connecting plate 11 without any fastening connection. Two vertical plates 14 are fixedly installed on the right side wall of the fixing plate 13 without any fastening connection. A second drive rod 17 is rotatably connected to the middle of the rear vertical plate 14, providing support and limiting for the second drive rod 17. The other end is fixedly connected to a second drive motor 16, which drives the second drive rod 17. The bottom end of the second drive motor 16 is fixedly connected to a second support seat 15, which provides fixed support for the second drive motor 16. The second support seat 15 is fixedly installed on the rear vertical plate 14 and is fastened to the other end. The other end of the second drive rod 17 is fixedly connected to a screw 18, which drives the screw 18. The other end of the screw 18 is threadedly connected to a limit ring 19, which limits the movement of the screw 18. The other side of the limit ring 19 is fixedly installed on the front vertical plate 14 and is fastened to the other end. A linkage seat 20 is threadedly connected to the outer diameter of the screw 18, which drives the linkage seat 20.Furthermore, the linkage seat 20 is externally slidably connected to two support rods 21, which support the linkage seat 20. The two ends of the two support rods 21 are fixedly installed on opposite sides of the two vertical plates 14, forming a tight connection. A second electric push rod 22 is fixedly installed externally on the linkage seat 20, providing a fixing effect. The output end of the second electric push rod 22 is fixedly connected to a second connecting plate 23. The second electric push rod 22 drives the second connecting plate 23 to rise and fall for adjustment. Simultaneously, a storage tank 24 is fixedly installed on the second connecting plate 23, forming a tight connection.

[0028] Example 2: The difference between this example and Example 1 is that an exhaust port 25 is provided on the outer side of the storage tank 24 for venting. An agitation assembly is provided inside the storage tank 24, comprising a drive rod 27 and an agitator 28. One end of the drive rod 27 is fixedly connected to the agitator 28, driving the agitator 28. The outer diameter of the drive rod 27 is rotatably connected to the top center of the storage tank 24, providing support and limiting for the drive rod 27. Simultaneously, the other end of the drive rod 27... A drive motor 26 is fixedly connected to the top of the storage tank 24. The drive motor 26 drives the drive rod 27. The drive motor 26 is fixedly installed on the top of the storage tank 24 and is fastened to each other. At the same time, multiple stirring columns 29 are fixedly connected to the outer diameter of the stirring rod 28. The stirring rod 28 drives the multiple stirring columns 29 to stir. A metering valve 30 is set in the middle of the bottom end of the storage tank 24. The metering valve 30 facilitates metering. The other end of the metering valve 30 is fixedly installed with a liquid injection port 31. The lithium battery is injected through the liquid injection port 31.

[0029] Working principle: In actual use, the device first requires starting the first drive motor 3, which drives the first pulley 5 and the transmission belt 6. The rotation of the transmission belt 6 drives the second pulley 7 to transfer the battery. Then, based on the battery's position, the first electric push rod 12 is activated. The first electric push rod 12 drives the first connecting plate 11 and the limiting plate 10 to slide inside the square frame 9, thereby adjusting the left and right position of the device. Then, the second drive motor 16 is activated, which drives the second drive rod 17 and the screw 18. The other end of the screw 18 is limited inside the limiting ring 19. The rotation of the screw 18 drives the linkage seat 20 to rotate, but because the linkage seat 20 has two external support rods 21 that limit its movement, the linkage seat 20 can only achieve forward and backward displacement. Then, the second electric push rod 22 is activated, which drives the second connecting plate 23 and the storage tank 24 to adjust the height. With this technical solution, the operator can... The adjustment mechanism allows for easier adjustment of the lithium battery's position. Even if the lithium battery's position is slightly off, it can be quickly adjusted to the correct position, greatly improving operational flexibility and efficiency. Furthermore, the adjustment mechanism can accommodate lithium batteries of different specifications without requiring equipment replacement. Before injecting electrolyte into the lithium battery, the drive motor 26 is activated, driving the drive rod 27. The drive rod 27 rotates at the top center of the storage tank 24, driving the stirring rod 28 and multiple stirring columns 29 to continuously stir the electrolyte, ensuring thorough mixing of all components and maintaining consistency in electrolyte composition. This also reduces the amount of air bubbles in the electrolyte, improving injection quality. Stirring also allows gases in the electrolyte to be better expelled from the vent 25. Injecting the stirred electrolyte into the lithium battery improves the performance consistency of the lithium battery. The electrolyte is then injected into the lithium battery through the metering valve 30 at the bottom of the storage tank 24 and then through the injection port 31.

[0030] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A lithium battery electrolyte injection device, characterized in that: It includes two support plates (1), and a first drive rod (2) is rotatably connected to the right support plate (1). One end of the first drive rod (2) is fixedly connected to a first drive motor (3), and the bottom end of the first drive motor (3) is fixedly connected to a first support seat (4). The first support seat (4) is fixedly installed on the outside of the right support plate (1). The other end of the first drive rod (2) is fixedly connected to a first pulley (5). The other end of the first pulley (5) is rotatably connected to the left support plate (1). A transmission belt (6) is provided on the outer diameter of the first pulley (5). A second pulley (7) is provided inside the other end of the transmission belt (6). The two ends of the second pulley (7) are rotatably connected to the opposite side of the two support plates (1). Multiple columns (8) are fixedly connected to the top of the two support plates (1). A square frame (9) is fixedly installed on the other end of the multiple columns (8). An adjustment component is provided on the square frame (9). The adjustment assembly includes a limiting plate (10), a first connecting plate (11), and a first electric push rod (12). The two ends of the limiting plate (10) are slidably connected to the inside of the square frame (9), and the first connecting plate (11) is fixedly connected to the middle of the limiting plate (10). At the same time, the left side of the first connecting plate (11) is fixedly connected to the output end of the first electric push rod (12), and the other end of the first electric push rod (12) is fixedly connected to the square frame (9). A fixing plate (13) is fixedly connected to the outside of the first connecting plate (11), and two vertical plates (14) are fixedly installed on the right side wall of the fixing plate (13).

2. The electrolyte injection device for a lithium battery according to claim 1, characterized in that: A second drive rod (17) is rotatably connected to the middle of the rear vertical plate (14), and a second drive motor (16) is fixedly connected to the other end of the second drive rod (17). A second support seat (15) is fixedly connected to the bottom end of the second drive motor (16), and the second support seat (15) is fixedly installed on the rear vertical plate (14).

3. The electrolyte injection device for a lithium battery according to claim 2, characterized in that: The other end of the second drive rod (17) is fixedly connected to a screw (18), and the other end of the screw (18) is threadedly connected to a limit ring (19), while the other side of the limit ring (19) is fixedly installed on the front vertical plate (14).

4. The electrolyte injection device for a lithium battery according to claim 3, characterized in that: The screw (18) is threaded with a linkage seat (20) on its outer diameter, and two support rods (21) are slidably connected to the outside of the linkage seat (20). At the same time, the two ends of the two support rods (21) are fixedly installed on the opposite side of the two vertical plates (14). A second electric push rod (22) is fixedly installed on the outside of the linkage seat (20). The output end of the second electric push rod (22) is fixedly connected to a second connecting plate (23), and a storage tank (24) is fixedly installed on the second connecting plate (23).

5. The electrolyte injection device for a lithium battery according to claim 4, characterized in that: The storage tank (24) is provided with an exhaust port (25) on one side of its exterior, and the storage tank (24) is provided with a stirring assembly inside. The stirring assembly includes a drive rod three (27) and a stirring rod (28). One end of the drive rod three (27) is fixedly connected to the stirring rod (28), and the outer diameter of the drive rod three (27) is rotatably connected to the top center of the storage tank (24). At the same time, the other end of the drive rod three (27) is fixedly connected to a drive motor three (26), which is fixedly installed at the top of the storage tank (24). Meanwhile, multiple stirring columns (29) are fixedly connected to the outer diameter of the stirring rod (28).

6. The electrolyte injection device for a lithium battery according to claim 4, characterized in that: A metering valve (30) is provided at the middle of the bottom of the storage tank (24), and an injection port (31) is fixedly installed at the other end of the metering valve (30).

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