Lithium battery liquid injection mechanism

Abstract

The utility model discloses a lithium battery liquid injection mechanism, and relates to the technical field of battery liquid injection equipment, the lithium battery liquid injection mechanism comprises a rack assembly, the rack assembly comprises a box body, and the box body is fixedly connected with a top plate through a group of mounting vertical rods; the liquid injection assembly comprises a mounting U-shaped plate, the mounting U-shaped plate is fixedly connected with the top plate, the mounting U-shaped plate is fixedly connected with a liquid injection machine, and a liquid outlet of the liquid injection machine is fixedly communicated with a liquid outlet pipe; the rotary feeding assembly comprises an installation rotating disc, the installation rotating disc is fixedly connected with a main shaft, the main shaft is connected with the box body through a bearing, the box body is provided with a circular groove matched with the installation rotating disc, the main shaft is fixedly connected with a containing disc, the containing disc is provided with a set of containing grooves, and the main shaft is fixedly connected with a supporting disc corresponding to the containing disc. The technical problem to be solved by the utility model is to provide the liquid injection mechanism for the lithium battery, the positioning of the lithium battery is realized, and the flow guide pipe extends downwards into the shell of the lithium battery during liquid injection, so that the electrolyte is prevented from splashing.

Description

Technical Field

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

[0002] A lithium-ion battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. It boasts advantages such as high energy density, long cycle life, low self-discharge rate, and no memory effect, and is widely used in consumer electronics, electric vehicles, energy storage systems, and other fields. The production process of lithium-ion batteries involves electrolyte injection, where an electrolyte solution is injected into the battery's interior.

[0003] Existing technologies, such as the utility model with authorization publication number CN219832973U, can adapt the electrolyte injection mechanism to the electrolyte injection operation of batteries of different sizes. A stop plate is provided to restrict the position of the battery, facilitating the electrolyte injection operation of the electrolyte injection component. Simultaneously, it can prevent electrolyte dripping from the injection component onto the battery, ensuring the quality of battery production.

[0004] Currently, there is a lack of a ring-shaped electrolyte injection mechanism that facilitates the injection of electrolyte into lithium batteries, avoids electrolyte splashing, and facilitates lithium battery processing. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a lithium battery liquid injection mechanism to achieve the positioning of the lithium battery. During liquid injection, the guide tube extends downward into the inside of the lithium battery casing to avoid electrolyte splashing.

[0006] This utility model achieves its purpose through the following technical solution:

[0007] A lithium battery liquid injection mechanism, characterized by comprising: a frame assembly including a housing, the housing being fixedly connected to a top plate via a set of mounting vertical rods, the housing, the top plate, and the mounting vertical rods forming a support frame for the entire liquid injection mechanism, ensuring the stable installation and operation of other components; an injection assembly including a mounting U-plate fixedly connected to the top plate and a liquid injection machine, the liquid injection machine's outlet being fixedly connected to an outlet pipe for injecting liquid into the lithium battery; and a rotary feeding assembly including a mounting turntable fixedly connected to a main shaft, the main shaft bearing connected to the housing, the housing having a circular groove matching the mounting turntable, the main shaft fixedly connected to a placement plate having a set of placement slots for placing lithium batteries to be injected, and the main shaft being fixedly connected to a support plate corresponding to the placement plate. The rotary feeding assembly as a whole realizes the rotary feeding function of lithium batteries, enabling lithium batteries to enter the liquid injection position sequentially.

[0008] As a further limitation of this technical solution, the housing is fixedly connected to a motor, the output shaft of the motor is fixedly connected to a half gear, the main shaft is fixedly connected to a gear disk, and the half gear matches the gear disk. When the half gear meshes with the gear disk, it drives the main shaft to rotate, ultimately achieving the rotation of the mounting turntable, allowing the lithium batteries placed on the placement tray to move sequentially to the liquid filling position.

[0009] As a further limitation of this technical solution, the housing is fixedly connected to a guide block, the vertical rod of the L-rod passes through the guide block, the L-rod is fixedly connected to a flow guide pipe, and the liquid outlet pipe is set inside the flow guide pipe to guide the liquid delivered by the liquid injection machine so that it can accurately flow into the lithium battery, ensuring the stability and accuracy of the liquid injection process.

[0010] As a further limitation of this technical solution, the housing bearing connects to the central shaft of the rotating wheel, and a power rod is fixedly connected to the edge of the rotating wheel. The L-rod is provided with a straight groove, and the power rod is disposed within the straight groove. When the rotating wheel rotates, the power rod rolls within the straight groove, pushing the L-rod to move up and down, thereby driving the guide tube to reciprocate, realizing the automation and continuity of the liquid injection operation. When the guide tube moves along the height direction, the half gear does not mesh with the toothed disc when it is at the lower end of its stroke. When the guide tube is higher than the lithium battery casing, the half gear meshes with the toothed disc, allowing the disc to rotate without obstructing the movement of the lithium battery.

[0011] As a further limitation of this technical solution, the housing bearing is connected to the central shaft of the driven gear, the output shaft of the motor is fixedly connected to the driving gear, the driven gear meshes with the driving gear, the central shaft of the driven gear is fixedly connected to the driving bevel gear, the central shaft of the rotating wheel is fixedly connected to the driven bevel gear, and the driving bevel gear meshes with the driven bevel gear. By employing gear meshing and bevel gear meshing, the driving power rod rolls within the straight groove of the L-shaped rod, achieving the reciprocating motion of the guide tube.

[0012] As a further limitation of this technical solution, the housing is fixedly connected to an L-plate, the L-plate is fixedly connected to a guide tube, a spring and a round-headed rod are provided inside the guide tube, the upper end of the spring is fixedly connected to the guide tube, and the lower end of the spring is fixedly connected to the round-headed rod. The mounting turntable is provided with a set of inferior arc ball grooves, and the round-headed rod matches the inferior arc ball grooves. When the mounting turntable rotates, the round-headed rod moves upward along the guide tube under the pressure of the inferior arc ball groove's arc surface, compressing the spring until the round-headed rod contacts the upper surface of the mounting turntable. When the lithium battery moves to the liquid injection position, the round-headed rod matches the position of the next inferior arc ball groove, the spring returns to its original position, and the round-headed rod enters the next inferior arc ball groove, which plays a role in positioning and stabilizing the rotation of the mounting turntable, ensuring that the lithium batteries placed in the placement slot are accurately moved to the liquid injection position in sequence.

[0013] Compared with related technologies, the lithium battery liquid injection mechanism provided by this utility model has the following beneficial effects:

[0014] (1) This utility model realizes the automated liquid injection process of lithium battery. It not only improves the liquid injection efficiency, but also ensures the accuracy and stability of liquid injection. It is applicable to the liquid injection process in large-scale lithium battery production.

[0015] (2) This device uses a guide tube that can move along the height direction. When injecting electrolyte, the guide tube extends downward into the lithium battery casing to avoid electrolyte splashing.

[0016] (3) This device uses a round-headed rod and a slightly curved ball groove to position the rotation of the mounting turntable, ensuring that the lithium battery can accurately reach the injection position. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0019] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the present invention. Figure 1 ;

[0020] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the present invention. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0022] In the diagram: 1. Top plate, 2. Mounting U-plate, 3. Liquid injector, 4. Liquid outlet pipe, 5. Guide pipe, 6. L-rod, 7. Straight groove, 8. Guide block, 9. Box body, 10. Placement plate, 11. Placement slot, 12. Support plate, 13. Main shaft, 14. Mounting turntable, 15. Slightly curved ball groove, 16. Gear plate, 17. Half gear, 18. Driving gear, 19. Motor, 20. Driven gear, 21. Driving bevel gear, 22. Driven bevel gear, 23. Rotary wheel, 24. Power round rod, 25. L-plate, 26. Guide pipe, 27. Spring, 28. Round head rod. Detailed Implementation

[0023] 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.

[0024] Example 1: A lithium battery liquid injection mechanism includes: a frame assembly, the frame assembly including a housing 9, the housing 9 being fixedly connected to a top plate 1 by a set of mounting vertical rods, the housing 9, the top plate 1, and the mounting vertical rods forming a support frame for the entire liquid injection mechanism, ensuring the stable installation and operation of other components; and a liquid injection assembly including a mounting U-plate 2, the mounting U-plate 2 being fixedly connected to the top plate 1, the mounting U-plate 2 being fixedly connected to a liquid injection machine 3, and the liquid injection machine 3 having a liquid outlet fixedly connected to a liquid outlet pipe 4 for injecting liquid into the lithium battery. The rotary feeding assembly includes a mounting turntable 14, which is fixedly connected to a main shaft 13. The main shaft 13 is bearing-connected to a housing 9. The housing 9 is provided with a circular groove that matches the mounting turntable 14. The main shaft 13 is fixedly connected to a placement plate 10, which is provided with a set of placement slots 11 for placing lithium batteries to be injected with electrolyte. The main shaft 13 is fixedly connected to a support plate 12 corresponding to the placement plate 10. The rotary feeding assembly as a whole realizes the rotary feeding function of lithium batteries, so that lithium batteries can enter the electrolyte injection position in sequence.

[0025] The housing 9 is fixedly connected to a motor 19, the output shaft of the motor 19 is fixedly connected to a half gear 17, and the main shaft 13 is fixedly connected to a gear disk 16. The half gear 17 is matched with the gear disk 16. When the half gear 17 meshes with the gear disk 16, it drives the main shaft 13 to rotate, ultimately rotating the mounting turntable 14, so that the lithium batteries placed on the placement plate 10 can be moved sequentially to the liquid injection position.

[0026] The motor 19 is model number 110ST-M04030.

[0027] The working principle of the lithium battery electrolyte injection mechanism provided by this utility model is as follows:

[0028] Electrolyte is added to the injection machine 3, and the lithium battery casing is placed into the placement slot 11 manually or using equipment, so that it contacts the support plate 12.

[0029] During electrolyte injection, the control motor 19 rotates, driving the half gear 17 to rotate. When the half gear 17 meshes with the gear disc 16, it drives the gear disc 16 to rotate. The gear disc 16 drives the main shaft 13, mounting turntable 14, support disc 12, and placement disc 10 to rotate. The support disc 12 and placement disc 10 drive the lithium battery to move. When the lithium battery moves below the outlet pipe 4, the motor 19 is turned off, and the control liquid injection machine 3 is activated, causing a certain amount of electrolyte to be sprayed into the lithium battery casing through the outlet pipe 4.

[0030] The control motor 19 continues to rotate, causing the next lithium battery to move below the liquid outlet pipe 4. The motor 19 is then turned off, and the liquid injection machine 3 is controlled to work. This process is repeated until the injected lithium battery moves to the initial placement position. The equipment is then used to remove the battery and transport it to the next process position.

[0031] Example 2: This example is a further elaboration based on Example 1. The housing 9 is fixedly connected to the guide block 8, the vertical rod of the L rod 6 passes through the guide block 8, the L rod 6 is fixedly connected to the guide pipe 5, and the liquid outlet pipe 4 is set inside the guide pipe 5 to guide the liquid delivered by the liquid injection machine 3 so that it can flow accurately into the lithium battery, ensuring the stability and accuracy of the liquid injection process.

[0032] The housing 9 is bearing-connected to the central shaft of the rotating wheel 23. A power rod 24 is fixedly connected to the edge of the rotating wheel 23. The L-rod 6 is provided with a straight groove 7, and the power rod 24 is disposed within the straight groove 7. When the rotating wheel 23 rotates, the power rod 24 rolls within the straight groove 7, pushing the L-rod 6 to move up and down, thereby driving the guide tube 5 to reciprocate, realizing the automation and continuity of the liquid injection operation. When the guide tube 5 moves along the height direction and is at the lower end of its stroke, the half gear 17 does not mesh with the toothed disc 16. When the guide tube 5 is higher than the lithium battery casing, the half gear 17 meshes with the toothed disc 16, the placement disc 10 rotates, and the guide tube 5 does not obstruct the movement of the lithium battery.

[0033] The housing 9 is bearing-connected to the central shaft of the driven gear 20. The output shaft of the motor 19 is fixedly connected to the driving gear 18, and the driven gear 20 meshes with the driving gear 18. The central shaft of the driven gear 20 is fixedly connected to the driving bevel gear 21, and the central shaft of the rotating wheel 23 is fixedly connected to the driven bevel gear 22, with the driving bevel gear 21 meshing with the driven bevel gear 22. By employing gear meshing and bevel gear meshing, the driving power rod 24 rolls within the straight groove 7 of the L-shaped rod 6, achieving the reciprocating motion of the guide pipe 5.

[0034] The working principle of the lithium battery electrolyte injection mechanism provided by this utility model is as follows:

[0035] When motor 19 rotates, it drives the drive gear 18 to rotate, the drive gear 18 drives the driven gear 20 to rotate, the driven gear 20 drives the drive bevel gear 21 to rotate, the drive bevel gear 21 drives the driven bevel gear 22 and the rotating wheel 23 to rotate, the rotating wheel 23 drives the power rod 24 to swing in the straight groove 7, the power rod 24 drives the L rod 6 to move along the height direction, and the L rod 6 drives the guide pipe 5 to move along the liquid outlet pipe 4.

[0036] During electrolyte injection, the lower end of the guide tube 5 is placed inside the lithium battery casing to prevent electrolyte splashing.

[0037] Example 3: This example is a further elaboration based on Example 1 or 2. The housing 9 is fixedly connected to the L plate 25, the L plate 25 is fixedly connected to the guide tube 26, the guide tube 26 is provided with a spring 27 and a round-headed rod 28, the guide tube 26 is fixedly connected to the upper end of the spring 27, the lower end of the spring 27 is fixedly connected to the round-headed rod 28, the mounting turntable 14 is provided with a set of inferior arc ball grooves 15, and the round-headed rod 28 matches the inferior arc ball grooves 15. When the mounting turntable 14 rotates, the round-headed rod 28 moves upward along the guide tube 26 under the pressure of the arc surface of the inferior arc ball groove 15, compressing the spring 27 until the round-headed rod 28 contacts the upper end face of the mounting turntable 14. When the lithium battery moves to the liquid injection position, the round-headed rod 28 matches the position of the next inferior arc ball groove 15, the spring 27 returns to its original position, and the round-headed rod 28 enters the next inferior arc ball groove 15, which plays the role of positioning and stabilizing the rotation of the mounting turntable 14, ensuring that the lithium batteries placed in the placement groove 11 are accurately moved to the liquid injection position in sequence.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lithium battery electrolyte filling mechanism, characterized in that, include: A rack assembly, the rack assembly including a housing (9), the housing (9) being fixedly connected to a top plate (1) by a set of mounting vertical rods; The liquid injection assembly includes a mounting U-plate (2), which is fixedly connected to the top plate (1), and the mounting U-plate (2) is fixedly connected to the liquid injection machine (3). The liquid outlet of the liquid injection machine (3) is fixedly connected to the liquid outlet pipe (4). The rotary feeding assembly includes a mounting turntable (14), which is fixedly connected to a main shaft (13). The main shaft (13) is bearing-connected to the housing (9). The main shaft (13) is fixedly connected to a placement plate (10). The placement plate (10) is provided with a set of placement slots (11). The main shaft (13) is fixedly connected to a support plate (12) corresponding to the placement plate (10).

2. The lithium battery electrolyte injection mechanism according to claim 1, characterized in that: The housing (9) is fixedly connected to the motor (19), the output shaft of the motor (19) is fixedly connected to the half gear (17), the main shaft (13) is fixedly connected to the gear plate (16), and the half gear (17) matches the gear plate (16).

3. The lithium battery electrolyte injection mechanism according to claim 2, characterized in that: The box (9) is fixedly connected to the guide block (8), the vertical rod of the L rod (6) passes through the guide block (8), the L rod (6) is fixedly connected to the guide pipe (5), and the liquid outlet pipe (4) is set inside the guide pipe (5).

4. The lithium battery electrolyte injection mechanism according to claim 3, characterized in that: The housing (9) is connected to the central shaft of the bearing wheel (23), and the power rod (24) is fixedly connected to the edge of the wheel (23). The L rod (6) is provided with a straight groove (7), and the power rod (24) is located in the straight groove (7).

5. The lithium battery electrolyte injection mechanism according to claim 4, characterized in that: The housing (9) is connected to the central shaft of the driven gear (20) by a bearing. The output shaft of the motor (19) is fixedly connected to the driving gear (18). The driven gear (20) meshes with the driving gear (18). The central shaft of the driven gear (20) is fixedly connected to the driving bevel gear (21). The central shaft of the wheel (23) is fixedly connected to the driven bevel gear (22). The driving bevel gear (21) meshes with the driven bevel gear (22).

6. The lithium battery electrolyte filling mechanism according to claim 1, characterized in that: The housing (9) is fixedly connected to the L plate (25), the L plate (25) is fixedly connected to the guide tube (26), the guide tube (26) is provided with a spring (27) and a round-headed rod (28), the guide tube (26) is fixedly connected to the upper end of the spring (27), the lower end of the spring (27) is fixedly connected to the round-headed rod (28), the mounting turntable (14) is provided with a set of inferior arc ball grooves (15), and the round-headed rod (28) matches the inferior arc ball grooves (15).

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