Lithium battery liquid injection station with liquid collecting tank leak-proof structure

Abstract

The utility model relates to lithium battery manufacturing technical field, concretely is a kind of lithium battery liquid injection station leakproof structure with liquid collecting tank, including liquid injection box, the upper end in the inside of liquid injection box is equipped with liquid injection mechanism by support arm, and the bottom in the inside of liquid injection box is equipped with liquid injection platform, the outside of the upper end of liquid injection platform is equipped with fixed liquid retaining ring, the outside of the upper end of fixed liquid retaining ring is equipped with movable liquid retaining ring of up and down extension position, and the inside edge of fixed liquid retaining ring is equipped with closed retaining ring, the gap between closed retaining ring and fixed liquid retaining ring bottom end inner wall forms annular liquid collecting tank, and one side of fixed liquid retaining ring is equipped with liquid guide hose.The lithium battery liquid injection station leakproof structure with liquid collecting tank can effectively collect leaked or splashed electrolyte, prevent its pollution equipment and working environment, improve production safety, and structure is simple, easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing technology, specifically to a leak-proof structure for a lithium battery filling station with a liquid collection tank. Background Technology

[0002] In the production of lithium batteries, electrolyte injection is a critical process. This process requires a clean operating environment, high injection precision, and prevention of electrolyte leakage or splashing during injection to avoid affecting battery performance and production safety. Therefore, it is particularly important to set up appropriate protective and collection structures at the electrolyte injection station.

[0003] Although existing lithium battery electrolyte filling stations are equipped with simple protective baffles or guide channels, they still have many shortcomings in actual use. For example, when the electrolyte filling pipeline is not tightly connected or the position of the electrolyte filling needle is misaligned, electrolyte can easily overflow from the filling port onto the workbench, which not only wastes electrolyte but may also corrode equipment parts and pose safety hazards. At the same time, the existing structure has low efficiency in collecting leaked liquid, and cannot effectively prevent electrolyte from flowing into the equipment or other work areas. Cleaning and maintenance are also difficult, affecting the overall stability and operating efficiency of the production line. Utility Model Content

[0004] The purpose of this utility model is to provide a leak-proof structure for a lithium battery electrolyte filling station with a collection tank, so as to solve the problems mentioned in the background art, such as the lack of effective collection measures when electrolyte leaks, which can easily cause equipment pollution and safety hazards, and make cleaning and maintenance difficult.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof structure for a lithium battery filling station with a liquid collection tank, comprising a filling tank, a liquid filling mechanism provided at the upper end of the filling tank via a support arm, and a liquid filling platform provided at the bottom of the filling tank. A fixed liquid-blocking ring is fitted on the outer side of the upper end of the filling platform, and a movable liquid-blocking ring that can extend vertically is fitted on the outer side of the upper end of the fixed liquid-blocking ring. A support ring is provided on the outer side of the middle of the filling platform, and the bottom end of the fixed liquid-blocking ring is supported on the top of the support ring. A closed retaining ring is provided at the inner edge of the fixed liquid-blocking ring, and the gap between the closed retaining ring and the inner wall of the bottom end of the fixed liquid-blocking ring forms an annular liquid collection tank. A liquid guiding hose is provided on one side of the fixed liquid-blocking ring.

[0006] Preferably, a vertically distributed lifting cylinder is fixed to one side of the outer wall of the fixed liquid-blocking ring by a support block, and the output end of the lifting cylinder faces upward and is fixedly connected to one side of the outer wall of the movable liquid-blocking ring by a connector.

[0007] Preferably, the inner walls on both sides of the bottom end of the movable liquid-blocking ring are connected with rolling balls, and the inner walls on both sides of the fixed liquid-blocking ring are provided with vertical ball grooves that cooperate with the ball structure.

[0008] Preferably, a first sealing ring is fitted on the outer wall of the upper edge of the fixed liquid-blocking ring, and the outer wall of the first sealing ring is in contact with the inner wall of the movable liquid-blocking ring.

[0009] Preferably, the bottom end of the fixed liquid-blocking ring is provided with a through hole that matches the structure of the liquid injection platform, and a second sealing ring is provided on the inner wall of the through hole at the bottom end of the fixed liquid-blocking ring.

[0010] Preferably, a plurality of liquid guiding grooves are uniformly arranged around the outer edge of the top of the injection platform, and the liquid guiding grooves are distributed outwardly at the top of the injection platform.

[0011] Compared with existing technologies, the advantages of this utility model are: the leak-proof structure of the lithium battery filling station with a collection tank can effectively collect leaked or splashed electrolyte, preventing it from contaminating equipment and the working environment, improving production safety, and is simple in structure and easy to maintain. This structure, through the combined design of a fixed liquid-blocking ring, a movable liquid-blocking ring, and a closed liquid-blocking ring, forms a reliable blocking and collection structure. Combined with a liquid-guiding hose, it enables the rapid discharge of leaked electrolyte, further improving the leak-proof effect. At the same time, the overall structure achieves stable installation through support rings and bolt holes, ensuring stability and sealing during operation. This not only effectively prevents electrolyte overflow and contamination but also improves equipment safety and ease of maintenance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a leak-proof structure for a lithium battery filling station with a liquid collection tank according to the present invention.

[0013] Figure 2 This is a top view schematic diagram of the connection between the liquid injection platform and the fixed and movable liquid-blocking rings of the anti-leakage structure of the lithium battery liquid injection station with a liquid collection tank according to this utility model.

[0014] Figure 3 This is a schematic diagram of the connection structure between the injection platform and the support ring of a lithium battery injection station with a liquid collection tank, according to the present invention.

[0015] In the diagram: 1. Injection tank; 2. Injection mechanism; 3. Injection platform; 4. Fixed liquid-blocking ring; 5. Movable liquid-blocking ring; 6. Support ring; 7. Sealing ring; 8. Annular collection tank; 9. Liquid guiding hose; 10. Lifting cylinder; 11. Ball bearing; 12. First sealing ring; 13. Second sealing ring; 14. Liquid guiding tank. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3This utility model provides a technical solution: a leak-proof structure for a lithium battery filling station with a liquid collection tank, including a filling tank 1. A filling mechanism 2 is provided at the upper end of the filling tank 1 via a support arm. The filling mechanism 2 mainly consists of a filling head, a filling pipeline, and a drive assembly. A filling platform 3 is provided at the bottom of the filling tank 1. The filling platform 3 has a cylindrical structure and four mounting holes around its top center for installing battery clamps. A fixed liquid-blocking ring 4 is fitted around the upper end of the filling platform 3. The edge of the fixed liquid-blocking ring 4 has an inwardly inclined surface structure. A movable liquid-blocking ring 5, which can extend vertically, is fitted around the upper end of the fixed liquid-blocking ring 4. A support ring 6 is provided in the middle of the filling platform 3. The bottom part is supported on the top of the support ring 6. The support ring 6 is provided with four bolt holes, and a sealing ring 7 is provided at the inner edge of the fixed liquid-blocking ring 4. The gap between the sealing ring 7 and the inner wall of the bottom end of the fixed liquid-blocking ring 4 forms an annular liquid collection groove 8. A liquid guiding hose 9 is provided on one side of the fixed liquid-blocking ring 4. The liquid guiding hose 9 can be connected to an external waste liquid recovery device. When the liquid injection head of the liquid injection mechanism 2 performs liquid injection operation on the battery, the electrolyte may leak or splash due to loose pipeline connection or needle position deviation. At this time, the fixed liquid-blocking ring 4 and the movable liquid-blocking ring 5 work together to form a barrier to prevent the electrolyte from spreading outward. At the same time, the annular liquid collection groove 8 formed between the sealing ring 7 and the inner wall of the bottom end of the fixed liquid-blocking ring 4 can effectively collect the leakage. To prevent the collected electrolyte from flowing directly onto the outside of the injection platform 3 or other areas of the equipment, the collected electrolyte is discharged through the liquid guiding hose 9 and introduced into an external waste liquid recovery device for centralized treatment. The bottom of the fixed liquid-blocking ring 4 is stably supported by a support ring 6, and the four bolt holes on it ensure a stable installation, guaranteeing the stability of the overall structure during operation. The overall structure is also easy to disassemble from the outside of the injection platform 3, effectively solving the problems of electrolyte overflow polluting equipment, corroding parts, posing significant safety hazards, and low collection efficiency leading to frequent maintenance and disruption of production continuity in existing technologies. One side of the outer wall of the fixed liquid-blocking ring 4 is fixed with vertically distributed lifting cylinders 10 via support blocks, with the output end of the lifting cylinders 10 facing upwards and connected to... The movable baffle ring 5 is fixedly connected to one side of the outer wall of the connecting piece. This structure drives the movable baffle ring 5 to move up and down vertically through the driving action of the lifting cylinder 10, so that an adjustable baffle range is formed between the movable baffle ring 5 and the fixed baffle ring 4. This adapts to the possible changes in electrolyte splash height during the electrolyte filling process of batteries of different specifications. Thus, the relative height difference between the movable baffle ring 5 and the fixed baffle ring 4 can be adjusted according to actual needs to ensure that the dynamic blocking area formed during the electrolyte filling process always effectively covers the electrolyte range that may leak or splash, thereby improving the overall leak-proof performance. Both sides of the bottom inner wall of the movable baffle ring 5 are rolled with ball bearings 11, and both sides of the inner wall of the fixed baffle ring 4 are provided with vertical ball bearing grooves that cooperate with the structure of the ball bearings 11.The movable baffle ring 5 of this structure cooperates with the vertical ball grooves on the inner walls of the fixed baffle ring 4 via the ball bearings 11. This allows the movable baffle ring 5 to move smoothly and with low resistance when sliding up and down, ensuring a stable posture during lifting and avoiding the baffle effect due to deviation or jamming. The outer wall of the upper edge of the fixed baffle ring 4 is fitted with a first sealing ring 12, and the outer wall of the first sealing ring 12 fits against the inner wall of the movable baffle ring 5. In this structure, as the movable baffle ring 5 moves up and down with the lifting cylinder 10, the first sealing ring 12 can maintain the sealing between the fixed baffle ring 4 and the movable baffle ring 5 without hindering their movement. This ensures that the electrolyte cannot leak out from the connection gap between the fixed baffle ring 4 and the movable baffle ring 5 when leakage occurs, while also maintaining the flexibility and stability of the movable baffle ring 5's lifting and lowering movement. The bottom part of the fixed baffle ring 4 is provided with a through hole that matches the structure of the injection platform 3, and the bottom part of the fixed baffle ring 4... A second sealing ring 13 is provided on the inner wall of some perforations. This structure forms a tight seal between the second sealing ring 13 and the injection platform 3, effectively preventing electrolyte leakage from the gap between the fixed liquid-blocking ring 4 and the injection platform 3. This further improves the sealing reliability of the entire leak-proof structure, ensuring that leaked or splashed electrolyte is always confined within the annular collection tank 8 and effectively collected. Several guiding grooves 14 are evenly arranged around the outer edge of the top of the injection platform 3, and the guiding grooves 14 are distributed outward at the top of the injection platform 3. This structure allows electrolyte leaked onto the surface of the injection platform 3 to be quickly guided outward along the guiding grooves 14 by gravity, preventing liquid accumulation on the surface of the injection platform 3. This effectively improves the guiding and collection efficiency of leaked electrolyte. It works in conjunction with the annular collection tank 8 below the fixed liquid-blocking ring 4 to achieve multi-stage guidance and centralized recovery of leaked liquid, further enhancing the practicality and safety of the entire leak-proof structure.

[0018] Working principle: When using the anti-leakage structure of the lithium battery filling station with a collection tank, firstly, the clamps are installed and the battery is fixed through the four mounting holes at the center of the top of the filling platform 3. Then, the bottom end of the fixed liquid-blocking ring 4 is sleeved on the outside of the upper end of the filling platform 3 and supported by the support ring 6. The bolt holes on the support ring 6 are used with bolts to position and install the fixed liquid-blocking ring 4. The second sealing ring 13 is tightly fitted with the filling platform 3 to form a seal. Subsequently, the lifting cylinder 10 is started, and its output end drives the movable liquid-blocking ring 5 to move upward along the outer wall of the fixed liquid-blocking ring 4 to a predetermined height through the connecting piece. The movable liquid-blocking ring 5 is connected to the inner wall of the fixed liquid-blocking ring 4 by the ball bearings 11 on both sides. The straight ball bearing groove cooperates to achieve smooth lifting and lowering. During this process, the first sealing ring 12 always maintains a sealed fit between the fixed liquid-blocking ring 4 and the movable liquid-blocking ring 5. Then, the liquid injection head in the liquid injection mechanism 2 starts to inject electrolyte into the battery under the drive of the drive component. The electrolyte is delivered to the liquid injection head through the liquid injection pipeline and the injection process is completed. During this period, if electrolyte leakage or splashing occurs, it will be intercepted and collected by the annular liquid collection groove 8 formed between the closed liquid-blocking ring 7 and the fixed liquid-blocking ring 4. Some of the liquid scattered on the surface of the liquid injection platform 3 is guided outward along the liquid guide groove 14, and finally all of it is discharged to the external waste liquid recovery device through the liquid guide hose 9, thus completing a series of operations.

[0019] 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 leak-proof structure for a lithium battery filling station with a liquid collection tank, comprising a filling tank (1), wherein the upper end of the filling tank (1) is provided with a filling mechanism (2) via a support arm, and the bottom of the filling tank (1) is provided with a filling platform (3), characterized in that: The upper end of the injection platform (3) is fitted with a fixed liquid-blocking ring (4), the upper end of the fixed liquid-blocking ring (4) is fitted with a movable liquid-blocking ring (5) that can extend up and down, and the middle of the injection platform (3) is fitted with a support ring (6). The bottom part of the fixed liquid-blocking ring (4) is supported on the top of the support ring (6), and the inner edge of the fixed liquid-blocking ring (4) is fitted with a closed ring (7). The gap between the closed ring (7) and the inner wall of the bottom end of the fixed liquid-blocking ring (4) forms an annular liquid collection groove (8), and a liquid guiding hose (9) is provided on one side of the fixed liquid-blocking ring (4).

2. The anti-leakage structure for a lithium battery filling station with a liquid collection tank according to claim 1, characterized in that: One side of the outer wall of the fixed liquid-blocking ring (4) is fixed with a vertically distributed lifting cylinder (10) by a support block, and the output end of the lifting cylinder (10) faces upward and is fixedly connected to one side of the outer wall of the movable liquid-blocking ring (5) by a connector.

3. The anti-leakage structure for a lithium battery filling station with a liquid collection tank according to claim 1, characterized in that: The inner walls of both sides of the bottom of the movable liquid-blocking ring (5) are connected with rolling balls (11), and the inner walls of both sides of the fixed liquid-blocking ring (4) are provided with vertical ball grooves that cooperate with the structure of the ball (11).

4. The anti-leakage structure for a lithium battery filling station with a liquid collection tank according to claim 1, characterized in that: The upper edge of the fixed liquid-blocking ring (4) is fitted with a first sealing ring (12), and the outer wall of the first sealing ring (12) is in contact with the inner wall of the movable liquid-blocking ring (5).

5. The anti-leakage structure for a lithium battery filling station with a liquid collection tank according to claim 1, characterized in that: The bottom part of the fixed liquid-blocking ring (4) is provided with a perforation that matches the structure of the liquid injection platform (3), and a second sealing ring (13) is provided on the inner wall of the perforation at the bottom part of the fixed liquid-blocking ring (4).

6. The anti-leakage structure for a lithium battery filling station with a collection tank according to claim 1, characterized in that: The top of the injection platform (3) is uniformly surrounded by several liquid guiding grooves (14), and the liquid guiding grooves (14) are distributed outwardly at the top of the injection platform (3).

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